Device and method for delivering a service, based on multiple speeds of data transfer in mobile communications system

FIELD: mobile communications.

SUBSTANCE: method and device for delivering a service are based on multiple speeds of data transfer, use scaling capability of multimedia codec in asynchronous communications network with multiple aces with code separation, delivering a service of multimedia broadcast and group transfer, area of whole cell is separated on first area and second area, first data are sent to first area, and second data are sent to second area, while first controller of electric power is in control of electric power of first data, and second controller of electric power controls electric power for second data, user device, positioned in second area, receives first data and second data, and user device in second area combines first data and second data, thus receiving one data element.

EFFECT: broader functional capabilities, lower costs.

5 cl, 13 dwg

 

The present invention relates to a broadband mobile communication system, multiple access, code division multiplexing (WCDMA), and more specifically to a device and method for providing services multimedia broadcast and multicast (MBMS).

Prior art

Usually the service is a multimedia broadcast and multicast (MBMS) is provided to all user devices (PU)wishing to receive multimedia service, one channel mobile broadband communication systems, multiple access, code division multiple access (WCDMA). In MBMS many PU share to receive data service one channel, and thus, the efficiency of the channel can be maximized. In addition, when the effective bandwidth, multimedia services can be provided properly. On this basis, multimedia services can be provided at a lower price.

Figure 1 shows the basic concept of the conventional MBMS. The basic concept of MBMS will be described in detail with reference to Figure 1. In the usual method of control of broadcast and multicast (Navy) apply the methods share the same channel. In particular, the usual way the Navy is used to broadcast a text requiring low near the STI data. In this broadcast the text is not limited to the delay time. On the other hand, MBMS requires a relatively high data transmission speeds and has a limit on the time delay. Therefore, the MBMS architecture is different from the architecture of the Navy.

Figure 1 shows the case when the MBMS is provided from the Node 101 to the device PU 102-105. The reference position 106 marks the boundary of the coverage cells, in which the Node 101 provides services. PU 102-105 are located within the cell area, taking account of the signals transmitted from the Node 101. The reference position 110 in figure 1 indicates the MBMS bearer Node 101, and the reference position 112 in figure 1 indicates the path of the reception channel for MBMS PU 102. In addition, the reference position 113, 114 and 115 denote the path of channels of reception of MBMS channels for PU 103, 104 and 105. Thus, the Node 101 transmits the MBMS signal, as indicated by reference 110, and PU 102 105 receive the MBMS signal in the ways indicated by reference positions 112 to 115. The width of each arrow indicates the intensity of MBMS. As shown in figure 1, the arrows of the transmitted signal from Node 101 has the greatest width. If PU is located farther from the Node-b, the intensity of the received signal becomes smaller, and the width of the arrows indicates the received signal becomes. Thus, the arrow indicating the signal PU 105, which is closest to the evil-101, is the second thickness, while the arrow indicates the signal PU 103, farthest from Node 101, has the smallest thickness.

Figure 5 shows the configuration of the underlying network for MBMS. The basic network configuration for MBMS will be described in detail with reference to Figure 5. The MBMS network must be able to provide various types of multimedia content (content) and can be adapted to work with many different providers of MBMS. Each of the providers 501 content transfers the multimedia content in the center of the broadcast/multicast service (MB-SC) 502. The interface 503 "X" between the provider 501 content and the MB-SC 502 may be different depending on the network provider or service provider MBMS. The interface 503 "X" is not limited to a certain standard.

MB-SC 502, shown in Figure 5, is planning on a channel-by-channel basis multimedia content provided by the service provider 501 content, and then transmits the scheduled multimedia content on the gateway support node (GGSN) 505 service packet radio data (GPRS). In addition, the MB-SC 502 provides an interface with providers 501 content and, in addition, performs loading and authentication providers 501 content. Multimedia content may be provided by the source 504 broadcast/multicast, the bar is dstone connected to the GGSN 505, without passing through the MB-SC 502. When the multimedia content may be provided by the source 504 broadcast/multicast, the interface between the GGSN 505 and the MB-SC 502 or between the GGSN 505 and the source 504 broadcast/multicast can use Internet Protocol (IP) 506. On the other hand, when the multimedia content is not provided by the source 504 broadcast/multicast, the MB-SC 502 manages all multimedia content for MBMS. MB-SC 502 transmits the MBMS content on the serving GPRS support node (SGSN) 507 via the GGSN 505, using the basic Protocol modelirovaniya GRPS (GTP) 508. The GGSN 505 can copy the content of MBMS to send copies of the MBMS content on many SGSN 507.

Referring to Figure 5, the SGSN 507 transmits the MBMS content in the radio network controller (RNC) 509 consecutively service for service, using the Internet Protocol 510. Internet Protocol 510 allows the SGSN 507 to perform the function of a group of transmission of the same content on many RNC 509. Optional Internet Protocol 510 may support unicast, so that the SGSN 507 transmits the content to only one RNC 509.

Referring to Figure 5, RNC 509 delivers the MBMS in the Node 511 interface 512 Iub. Each Node In 511 delivers the MBMS corresponding user device (PU) 513 using interface 514 Uu, which represents an essential interface. With the appropriate PU 513, located within the cell area of the Node-511, supports MBMS.

The delivery of data between components of the mobile communication system is described in more detail with reference to Figure 5. Between the MB-SC 502 and the GGSN 505 is set based on the IP multicast connection. The connection is based on the GTP between the GGSN SGSN 505 and 507 supports MBMS. Between SGSN 507 and RNC 509 must be configured carrier radio access for IP-based multicast connection. In addition, the radio access bearer must be configured between the RNC 509 and each of the Nodes In 511 so that the RNC 509 delivers the MBMS from the SGSN 507 on PU 513. In addition, between Node-511 and PU 513 must be set to channel such that the MBMS received from the RNC 509, may be provided to the PU 513.

In order to provide the MBMS, the respective components of the mobile communication system transmit messages described above. Next will be described the different types of messages transmitted to initiate MBMS and procedures for the transfer of messages. Will be described in the contexts of services, managed Node 511, supporting the MBMS. Each Node In 511 should keep a list of PU 513, receiving MBMS, and information about the area of the cell to which they belong PU 513, so that the specified PU 513 may be provided to an arbitrary MBMS. According to stored information of MBMS delivered from the RNC 509, must be delivered to the zone with the s, where are PU 513. Unit information updated and managed in the context of the service Nodes In 511. In addition, RNC 509 can manage and update the context services RNC in accordance with the MBMS. The context information services RNC may contain the following elements.

Context services RNC={identification information of MBMS, cell identification information, receiving or taking of MBMS, the information describing the quality of service (QoS)required for the provision of MBMS}.

RNC 509 manages and updates the context of the RNC services for a specific MBMS. When MBMS is actually RNC 509 refers to the context of services RNC and delivers the flow of MBMS in the appropriate cell. SGSN 507 can also manage and update the context services SGSN for each MBMS. The context information services SGSN may include the following elements.

Context services SGSN={identification information of MBMS, identity of the RNC, receiving or taking of MBMS, the information describing the quality of service (QoS)required for the provision of MBMS}.

SGSN 507 manages and updates the context SGSN services for a specific MBMS. When MBMS is actually SGSN 507 refers to the context of services SGSN and delivers the flow of MBMS in the appropriate cell.

Below are described the messages transmitted in the provision of MBMS, with reference to Fig.6.

First, in step 601 650 PU poyle the first message MBMS request (MBMS SERVICE REQUEST 1) to request the RNC 652 to provide arbitrary MBMS X. The first MBMS request message includes identification information of MBMS, which requires PU 650, and user ID, which is identification information PU 650 that sent the first request message to the MBMS. In response to the first MBMS request message, the RNC 652 updates the context services RNC, which he manages. That is, the RNC 652 adds in the context of services RNC user ID PU 650, identification information of MBMS requested PU 650, and the ID of the cell that belongs to the specified PU 650, i.e. the identification information of the Node In 651.

After RNC 652 added information, in step 602 transmits the second MBMS request message (MBMS SERVICE REQUEST 2)to request the SGSN 653 to provide MBMS X.

The above-described case, when the RNC 652 updates the context services RNC, but the RNC 652 may re-configure the context services RNC for MBMS X, if MBMS X requested PU 650 is a new MBMS. RNC 652 manages the information of the newly-configured context services RNC (containing identification information PU 650 and the identification information of MBMS requested PU 650). In addition, the second MBMS request message includes identification information of MBMS requested PU 650, and the identification information RNC 652, sending a second request message to the MBMS.

In response to the second is the select query MBMS from the RNC 652, SGSN 653 updates the context SGSN services it manages. That is, the RNC 652 adds to the information context SGSN services, depending on the receiver, the identification information of the user PU 650, and the identification information RNC 652 belongs to the specified PU 650. After SGSN 653 added information, in step 603 transmits the MB-SC 654 third MBMS request message (MBMS SERVICE REQUEST 3) to request the MB-SC 654 on the provision of MBMS X. the Above-described case, when the SGSN 653 updates the context services SGSN, but SGSN 653 re-configures the context of services SGSN, if the MBMS X requested PU 650 is a new MBMS. SGSN 653 manages the information of the newly-configured context services SGSN (containing identification information RNC 652).

The third MBMS request message includes identification information of MBMS, zabroshennoi PU 650. In response to the third request message to the MBMS, the MB-SC 654 in step 604 sends SGSN 653 third response message MBMS (MBMS SERVICE RESPONSE 3). The third response message MBMS indicates that the third MBMS request message was properly made, and MBMS X was added in the context of services on the basis of the received information. This third response message MBMS includes identification information of MBMS.

In response to the third response message MBMS, SGSN in step 653 605 transmits to the RNC 652 second response message MBMS (MBMS SERVICE RESPONSE 2), which indicates that createsubmenu request MBMS was accordingly accepted. The second response message MBMS includes identification information of MBMS. In response to the second response message MBMS, RNC 652 at step 606 transmits PU 650 first response message MBMS (MBMS SERVICE RESPONSE 1), which indicates that the second response message MBMS was accordingly accepted. The first response message MBMS includes identification information of MBMS. PU 650 receives the first response message MBMS and waits for transmission from the network to the other control information.

In step 607 MB-SC 654 SGSN informs 653 that MBMS X soon to be initiated by transmission of the third message with the notification of MBMS (MBMS SERVICE NOTIFY 3) to identify PU willing now to take MBMS X. however, the above-mentioned step 606 and the above-mentioned step 607 may be a substantial time interval. The purpose of the above steps 601 through 606 is verification of delivery of arbitrary MBMS. Other steps, containing the above-mentioned step 607, designed to perform the procedure used for the delivery of MBMS. In other words, through the above-mentioned steps 601 through 606 PU are notified about the program, associated with an arbitrary MBMS or multiple MBMS. After receiving the notice, determine PU, should be adopted MBMS. PU transmit the result of the determination in the MB-SC 654. In response to the result of determination of the MB-SC 654 determines that the debtor is and to be provided with appropriate MBMS. Thus, the above steps 601 through 606 are performed before the actual provision of services. The third message of the MBMS notification includes identification information of MBMS, the time of initiation of services, in which MBMS is actually provided, and QoS information. After receiving the third message, the MBMS notification, SGSN 653 sets the transmission channel for providing MBMS X and the Iu connection. In addition, the SGSN 653 updates the context services SGSN, using the received QoS information. SGSN 653 identifies PU wishing to receive MBMS, and in step 608 transmits in the RNC 652 second message notification of MBMS (MBMS SERVICE NOTIFY 2) indicating that the MBMS should be soon initiated. The second message of the MBMS notification includes identification information of MBMS, the time of initiation of services and the QoS information. After receiving the second message with the notification of MBMS, RNC 652 identifies the PU contained in a managed context services RNC and at least one honeycomb, which belong to the PU. Then in step 609 RNC 652 transmits the first message with a notification of MBMS (MBMS SERVICE NOTIFY 1), and thus RNC 652 informs PU 650 that MBMS X should be soon initiated. The first message MBMS notification includes identification information of MBMS, the time of initiation of services and the QoS information.

After receiving the first message with a notification of MBMS, PU 650 specifies l is to take MBMS X currently. If PU 650 wishes to receive MBMS X, PU 650 at step 610 transmits the first response message for notification of MBMS (MBMS NOTIFY RESPONSE 1) in the RNC 652 after saving the received QoS information. The first response message to the MBMS notification includes identification information of MBMS and the identification information of the PU. In response to the first response message to the MBMS notification, RNC 652 passes to step 611 in SGSN 653 second response message for notification of MBMS (MBMS NOTIFY RESPONSE 2), indicating that the second message to the MBMS notification was made accordingly. The above-described case, when the RNC 652 receives the first response message to the MBMS notification from only one PU 650, but the first response message to the MBMS notification can also be obtained from a number of PU. In this case, the RNC 652 updates the context services RNC, adding in the context of services RNC ID information PU and identification information SOT, to which they belong.

The second response message for notification of MBMS transmitted RNC 652 includes identification information of at least one MBMS, and identification information of at least one PU. After receiving the second response message to the MBMS notification, SGSN 653 updates the managed context services RNC, adding to the context of services RNC ID information PU and identification information RNC, soteriades the second response message to the MBMS notification. In addition, at step 612 SGSN 653 transmits to the RNC 652 message request assignment of radio access bearer (RAB) for MBMS required to establish a transmission channel for transmitting at least one stream of MBMS X. the query Message RAB assignment includes identification information of MBMS and information about QoS. After receiving a request message about the purpose of the RAB, RNC 652 identifies cells and PU contained in the RNC service context. Then RNC 652 prepares establishing a radio channel for use in a cell, i.e. in the Node-651, based on the received QoS information. At this point, RNC 652 may determine whether the media channel to be installed in the form of direct (descending) channel sharing data or downstream (direct) data channel and downstream (direct) free dedicated control channel and uplink (reverse) dedicated channel based on the alternate provision PU, based on the amount of PU-owned satam contained in the context of services RNC. Next will be described the information about the channels. Thus, if the number of PU belonging to the cell exceeds the threshold value, the RNC 652 provides direct channels sharing data. Otherwise, if the number of PU belonging to the cell, is less than the threshold value, the RNC 652 provides direct data transmission channel is a direct free dedicated control channel reverse dedicated channel based on the alternate provision for PU. Obviously, the threshold value may be changed by the user or depending on the specifications of the mobile communication system. In the present description, it is assumed that RNC 652 provides direct data transfer channel and a direct free dedicated control channel, reverse dedicated channel.

In step 613 RNC 652 transmits the request message on the establishment of the MBMS radio to the requesting Node In 651 for establishing a radio channel for the flow of MBMS X. When this request message on the establishment of the MBMS radio may include information about the code dividing the frequency band into separate channels, information about the code scrambling, at least one number format for a slot (time interval), the encoding information channel, etc. for use in the direct data channel that carries the flow of MBMS X. request Message on the establishment of the MBMS radio may additionally include information about code split the frequency band into separate channels, information about the code scrambling, encoding information channel, etc. for use in downstream (direct) free dedicated control channel. The request message on the establishment of the MBMS radio may additionally include information about the code dividing the frequency band into separate channels, information about the code scre is borovnia, information related to the management of power transmission (SAR, TRS), encoding information channel, etc. for use in the uplink (reverse) the selected channel. Information related to SAR, includes information related to the quality of the channel for use in a reverse dedicated channel and the information about the step size for use in the direct data channel and direct free dedicated control channel. Receiving a request message on the establishment of the radio link, the Node-651 establishes a direct data channel and direct free dedicated control channel, using the information about the code dividing the frequency band into separate channels and information about the scrambling code contained in the request message on the establishment of the radio channel, and completes the preparation for taking up a dedicated channel. After completion of preparation for reception of bottom-up dedicated channel, the Node-651, in step 614, control passes to the RNC 652 response message on the establishment of the radio channel.

After receiving the response message on the establishment of the radio channel, the RNC 652 requests PU-driven Node-651 that sent the reply message on the establishment of the radio channel, to establish a unidirectional channel. Thus, in accordance with 6, RNC 652 passes to step 615 message about establishing a unidirectional radican the La MBMS request for PU 650 on establishing a unidirectional channel. When this message is about establishing a unidirectional channel includes information about the code dividing the frequency band into separate channels, information about the scrambling code and the number format for a slot associated with the downstream data channel, information about the code dividing the frequency band into separate channels and information about the scrambling code associated with a downward free dedicated control channel, information about the code dividing the frequency band into separate channels and information about the scrambling code associated with the ascending dedicated channel, etc. Message about establishing a unidirectional channel may additionally include information relating to the quality of the channel, the use of downlink data and downlink free dedicated control channel and the information about the step size for use in the uplink dedicated channel. After receiving the message about the establishment of a unidirectional channel, PU 650 completes the preparation for the reception of the downstream data channel and downward dedicated control channel, the information contained in the report on the establishment of a unidirectional channel, and sets the uplink dedicated channel. After the establishment of the rising of the selected channel, PU 650 step is 616 transmits in the RNC 652 completion message establishing a unidirectional channel (MBMS RADIO BEARER SETUP COMPLETE) indicates that establishing a unidirectional channel is completed. Completion message establishing a unidirectional channel includes identification information of MBMS and the identification information of the user. RNC 652 updates the managed context services RNC, adding in the context of services RNC ID information PU 650, sent a message about the completion of the establishment of a unidirectional channel. Then, after updating context services RNC in step 617 RNC 652 passes in SGSN 653 response message about the purpose of MBMS RAB, indicating that the MBMS bearer X fully configured. A response message about the purpose of MBMS RAB includes identification information of MBMS and the identification information of the PU. After receiving a response message about the purpose of MBMS RAB, SGSN 653 updates the managed context services SGSN, adding in the context of services SGSN identification information of PU contained in the response message about the purpose of MBMS RAB. After updating context services SGSN in step 618 SGSN 653 transmits the MB-SC 654 third response message of notification of MBMS (MBMS NOTIFY RESPONSE 3), indicating that the preparation for the reception of MBMS X is complete. The third response message to the MBMS notification includes identification information of MBMS. MB-SC 654 mobile communication system by following the above steps 601 through 618, provides a flow of MBMS X SPM 650 in step 619, after receiving the third response message of notification of MBMS.

Each of the above messages may include not only the above types of information, but also other types of information.

In the existing broadband mobile communication system with multiple access and code division multiplexing (WCDMA), one carrier contains a number of physical channels used in one cell. One carrier contains many physical channels, such as common channels, dedicated channels, etc. because radioresource in the Node-b are insufficient. For example, resources include resources code dividing the frequency band into separate channels (code forming channels, a channelization code and resources power transmission. Tree of codes for canalobre codes associated with one carrier, and the number of channels for simultaneous transmission of one of the carrier is limited to tree codes. Since the conventional power amplifier, which is part of the Node-In, limited capacity satisfactory linearity of the power amplifier can only be used limited resources power transmission. The biggest problems are lack of resources, power transmission and insufficient resources canalobre codes.

As a General rule, that increasing the data transfer speed manufacture is to transmit power. To provide services to the entire cell as a whole, requires a very high power transmission. Thus, in order PU, located on the border of the cell, duly took the MBMS channel, when the MBMS with the highest data rate available over the entire cell area, the transmission power of the channel must be very high. Thus, there is a problem, which consists in the fact that the number of MBMS, which can be provided is limited, and that the electrical power in the channels for services such as voice, packet, etc, becomes insufficient. In Figure 1, the intensity of the signal received PU 103 located on the border of the cell, as indicated by the wide arrows 113, must be greater than a predefined level. In addition, transmit power, denoted by the reference 110, shown in figure 1, must be large enough to ensure that the intensity of the received signal, denoted by the width of the arrow 113, could be greater than a predefined level. As a result, in the above-described conventional method, there is a problem, which consists in the fact that the transmit power can be very large.

In order for the Node To perform the transfer operation, based on the transmission power at which PU, located on the border of the cell, could properly take the channel with the velocity of the th transmission of binary data, for example, 64 KB/s, suitable for video services, a large portion of transmit power available at the Node-B must be assigned to a video service. Thus, there is a problem, namely, that the number of services that may be provided may not exceed two, and resources for other services for voice and packet transmission may not be highlighted in the appropriate amount, even if you are providing one service.

The invention

Thus, the present invention is made on the basis of the above-described problems, and one of the objectives of the present invention is to provide a device and method for providing a possibility to use different performance when receiving data in accordance with a location of user devices (PU) within one cell of a mobile communication system.

Another objective of the present invention is to provide a device and method to improve the situation with the problem of insufficient transmit power at the Node-b and other problems associated with resource allocation of the transmission power, when providing services multimedia broadcast and multicast (MBMS).

Another objective of the present invention is to provide a device and method for providing the same services multimedia broadcast and multicast (MBMS), what about the least two of the physical channel using scalable multimedia codec, and not through one physical channel using high transmit power.

Another object of the present invention is to provide a device and method for reducing the total amount of transmit power that can be assigned to provide the same services multimedia broadcast and multicast (MBMS), by allowing one of the two physical channels to use the first power level at the border of the cell and permits the other of the two physical channels to use the second power level lower than the first power level.

According to the first aspect of the present invention, is provided a method of transferring data from a Host In the first user device (PU), located at least within one second memory cell served by the Node B, and the second PU, located within the first area of the cell served by the Node-In and out of the second memory cell and the first cell region includes a boundary cell and the second cell containing the stages of basic data for the second PU with the level of electrical power, allowing PU, located on the border of the first cell region cell, take the main data, and the data include the impact encoded main data and enhanced data, complementary main data; and transmitting the extended data to the first PU with the level of electrical power, allowing PU located within the second memory cell, to receive extended data, and the first PU can receive data of higher quality, compared to the second PU, by taking as basic data and extended data.

According to the second aspect of the present invention, provides a way to separate the flow of the basic data and extended data stream that is complementary to the main data flow, through independent channels from the Node In a wireless communication system, which receives a stream of basic data and the extended data stream as the data corresponding to one service, and provides a stream of basic data and the extended data stream to the user device (PU)located within a cell, the method comprises the steps of transmitting main data flow at the first power level, which allows PU, located within a cell, to receive the main data flow; and transmitting the extended data stream at the second power level that is relatively lower than the first power level.

According to a third aspect of the present invention, is a method that allows user mustache is the unit (PU) to take basic data and extended data, complementary main data transmitted through various channels by the Node-B, and basic data and extended data is separated from the predetermined data, the method comprises the stages: if accepted as basic data and extended data, combining the first data generated by the decoding key data and second data generated by decoding the enhanced data and outputting the combined data; and if accepted, only the basic data, decoding only the basic data and outputting the decoded key data.

According to a fourth aspect of the present invention, is a device that allows the user unit (PU) to take basic data and extended data, and PU includes a decoder for separating the main data and enhanced data from the predefined data and individual decoding the basic data and extended data transmitted by the Node In through various channels, and the device comprises means for receiving the first decoded data generated by decoding the basic data and second output data when decoding the enhanced data, and determining temporal information about the first and second decoded data; and a device for combining the first decoded d is the R-and second decoded data, and combining the first decoded data and second decoded data, based on the time information from the specified funds.

Brief description of drawings

The above and other objectives, features and other advantages of the present invention will be clearer from the following detailed description, taken together with the accompanying drawings, in which:

Figure 1 is a block diagram illustrating a procedure for the provision of multimedia broadcast and multicast - MSGP (MBMS) for use in a conventional asynchronous communication system with multiple access, code division multiple access (CDMA);

Figure 2 is an illustration of the structure of the transport channel and physical channel for MBMS, to which the present invention is applicable;

Figure 3 shows the basic architecture for the provision of services with multiple speed transmission to which the present invention is applicable;

Figa is an illustration of a spatial scalable video codec, which is used in the present invention;

Figv is an illustration of a temporal scalable video codec, which is used in the present invention;

Figs is an illustration of a scalable codec according to the signal-to-noise ratio (SNR), which is used in the present invention;

<> Figure 5 is an illustration of the structure of the underlying network for conventional MBMS;

Figure 6 shows the types of messages transmitted during normal MBMS service, and procedure for transmission of messages;

Figure 7 shows the procedure of message transmission for MBMS with an average data transfer rate - TDCs (MDR), to which the present invention is applicable;

On Fig shows the packet format Protocol real-time (RTP), which is used in the present invention;

Figure 9 shows a procedure of processing data in a user device (PU), to which the present invention is applicable;

Figure 10 shows a configuration of the Node, to which the present invention is applicable; and

Figure 11 shows the configuration of a PU to which the present invention is applicable.

Detailed description of preferred embodiments of the present invention

Figure 1 shows the General concept of services multimedia broadcast and multicast - MSGP (MBMS). The node-b supports one service for a variety of user devices (PU), located within the service area of the Node, using one resource element. Thus, the Node-b supports MBMS for PU, located within the service area of the Node, using electric power as a resource element. At the same time, pascalc the PU are removed from the Node-B, MBMS is specified PU with a weakened electric power.

Figure 2 is illustrated a transport channel and physical channel for MBMS according to the present invention. Not defined MBMS channel associated with the physical layer defined in the project on creation of communication systems of the 3rd generation 3rdGeneration Partnership Project (3GPP), associated with standard asynchronous international mobile telecommunications-2000 (IMT-2000), so the names of the transport and physical channels for MBMS shown in figure 2, are newly defined. Physical channel for MBMS is introduced as a physical channel sharing for broadcast and multicast (PBMSCH), and a transport channel for MBMS is entered as a channel sharing for broadcast and multicast (BMSCH). Link 201, shown in Figure 2, indicates the structure of the PBMSCH, and link 202, shown in figure 2, indicates the structure shown in BMSCH, which is transmitted through the PBMSCH. According to the present invention, the reason for which a new transport channel and physical channel for MBMS defined as shown in figure 2, is to describe the present invention, using the new channel names, which have the most basic properties of existing channels, as MBMS has not only the capacity is ü use a transport channel and physical channel, related to conventional broadband system with multiple access and code division multiplexing (WCDMA), but also the possibility of using new channels. That is PBMSCH 201, shown in figure 2, has the same structure time slots (intervals), as well as a physical channel used in the existing mobile communication system. Similarly, BMSCH 202, shown in figure 2, can also use the structure of the existing transport channel. In this case, the transport channel is multiplexed with the pilot information indicator combinations of transport formats (TFSI) and the like, thus forming a physical channel.

For example, PBMSCH 201, being a physical channel may use a secondary common physical control channel (S-CCPCH), and the transport channel can use forward access channel (FACH).

That is a transport channel and physical channel are flexible, as described above, and one of the slots PBMSCH essentially multiplexed BMSCH, as indicated by reference 202 in figure 2. In addition, the coefficient of expansion - CU (SF) varies when changing the bit rate for services provided through the PBMSCH, and the number of bits per slot in the PBMSCH is determined based on the specified variation. Basically, the bit rate in the video MBMS service based on 64 kbit/s, and hence, the use of which has been created KR physical channel is 32.

Next will be described a scalable video codec. In a conventional WCDMA system, the video codec used for video, associated with a standard Motion Picture Experts Group-4 (MPEG-4) and n(+). Because the codec was designed so that it can be used for video calling over the radio channel, based on the low bit rate codec can be used for videos in other radio communication systems as well as in a conventional WCDMA system. The video codec in some cases, may have the property of scalability. Scalable video codec allows you to recover images of different quality from one of the transmitted image in accordance with the decoder and the transmission channel. Scalability includes temporal scalability, spatial scalability, scalability signal-to-noise ratio (SNR), etc. in order to use the scalability, the video is divided into physical configuration (structure) for the main level and another physical configuration (structure) for the advanced level, which perform the coding. The main level is absolutely necessary to play the advanced level. Additional information associated with the advanced level uses in his playing. Figures from 4A through 4C illustrate the scalability of the video is of ODEK.

Figure 4 illustrates the spatial scalability. Spatial scalability supports low resolution on the main level, and a physical configuration for the advanced level performs an operation of sealing the sample information data, and performs the operation of summation for additional differential signal (only for advanced level) and encoded information, thereby obtaining a signal with a relatively high resolution. In principle, the set of data main level can be encoded/decoded independently. On Figa link 410 indicates the data on the primary level, and link 420 indicates the data of the advanced level. Many data base-level coded consistently and indicated by the reference 411, 412 and 413 on Figa (Data encoded by the codec, can be represented as a sequence of still pictures, one picture is called a frame). Image corresponding to the image signals of the main level has a predetermined number of pixels. On the other hand, the link 420 to Figa data indicates an advanced level. The physical configuration of the advanced level performs an operation of sealing the sample for the primary level, and the resolution is improved by using an additional differential signal, so that can be decoded picture big than a picture of the main level. Thus, the operation of sealing the sampling is performed for the image denoted by the reference 411 on Figa, and the picture after compaction of the sample and the differential signal are summed so that the image denoted by the reference 421. Next, the operation of sealing the sampling is performed for the image denoted by the reference 412 on Figa, and the picture after compaction of the sample and the differential signal are summed so that the image denoted by the reference 422. In addition, the operation of sealing the sampling is performed for the image denoted by the reference 413 on Figa, and the picture after compaction of the sample and the differential signal are summed so that the image denoted by the reference 423. The resolution of the images 421, 422 and 423 advanced level exceeds a predefined amount resolution images 411, 412 and 413 main level. If the picture of the main level and the picture of the advanced level are displayed on the same display screen, the screen resolution of the advanced level will be better than the resolution of the underlying level.

Figv illustrates temporal scalability. Temporal scalability has a function to increase the time resolution, at the same time keeping the same spatial resolution. For example, the physical configuration the main level encodes only the odd frames from a set of video frames throwing encoded odd frames, and the physical configuration of the advanced level encodes the remaining even-numbered frames of the set of video frames, giving even coded video frames, providing, thus, various services using temporal scalability. Reference 430 on FIGU refers to a sequence of images of the main level. The physical configuration of the ground level consistently produces only odd frames 441, 443 and 445, while the physical configuration of the advanced level advanced produces only odd frames 442 and 444. Thus, the frame rate for the advanced level higher than ground level. Therefore, the physical configuration of the advanced level can provide personnel with a higher repetition rate compared to the physical configuration of the main level.

Figs illustrates the scalability SNR (SNR). Scalability SNR, shown in Figs similar to spatial scalability, shown in Figa. However, the SNR scalability is designed to improve image quality at constant spatial resolution. Usually the bandwidth is directly proportional to the quality of the image, and the image transmission can be controlled by changing the quantization interval in the video. Thus, the physical con who horatia main level performs a coarse quantization, and the physical configuration of the advanced level quantum differential signal is more accurate quantizer, providing, thus, different image quality. As indicated by the link 450 at Pigs, the physical configuration of the ground level produces frames 451, 452 and 453 after coarse quantization. As indicated by the reference 460 on Pigs, the physical configuration of the advanced level performs more accurate quantization for frames 451, 452 and 453 and, thus, removes the distortion in frames 451, 452 and 453, issued by the physical configuration of the main level. The physical configuration of the advanced level gives additional information corresponding to a more accurate quantization, so there may be obtained an image with a relatively higher quality. References 461, and 463 642 on Figs indicate the frames after the process more accurate quantization.

When scaling the video in the encoding operation is generated, at least two bit stream. If one accepts only the primary bit stream, you may be granted primary videoslove. On the other hand, if accepted both bit stream, may be provided videoslove with relatively higher quality.

The present invention provides a technical method and apparatus for the physical layer, envivas is on the standard radio access, such that in the MBMS can be used property of scalable multimedia codec. Figure 3 shows the basic concept of the level of radio access for MBMS based on the set data transmission speeds using properties of scalable video services, to address the problem of excessive power consumption in transmission conventional MBMS services.

Figure 3 shows the Node-b and PU for MBMS transmitted signals, etc. figure 3 illustrates the case in which the Node-301 supports circular honeycomb. Node-301 provides MBMS in control Desk 1 incorporates thermal 302 and control Desk 1 incorporates thermal 303. Node-301 uses for one MBMS two channels indicated by the links 307 and 305. Channel 307 carries multimedia information corresponding to the main level, and channel 305 carries multimedia information corresponding to the advanced level. When assigning a transmission power for each channel, the Node-301 assigns transmit power channel 307, such that the channel 307 can be transmitted multimedia information to the border 309 cell. In addition, Site-301 assigns transmit power channel 305, less than the capacity of the transmission channel 307. Throughout the cell area can be a multimedia information of the main channel 307. However, on the part of the cell can be not only the reception of multimedia information of the main channel 307, but also multimedia information extended ur is una channel 305. As indicated by the link 306 in figure 3, the main area is an area within a cell, which is accessible multimedia information main level. As indicated by the link 304 in figure 3, the extended area is a shaded area that is accessible multimedia information advanced level. 2 303 located in the main area, can decode the multimedia information corresponding to the main level, so that it takes service with a low baud rate. Control Desk 1 incorporates thermal 302 located in the extended area can decode multimedia information corresponding to the advanced level, so that it takes service with a relatively higher speed transmission of binary data.

For MBMS in the above-described method according to the present invention includes components that require consideration. First, at least two bit stream representing multimedia information corresponding to the basic and advanced levels of the multimedia codec, managed by the service center in a broadcast/multicast - CUSP (MB-SC). The bit streams are transmitted from the MB-SC in gateway support node (GGSN) service packet radio service (GPRS), the serving GPRS support node (SGSN)to which ntroller radio network (RNC) and Node-C. Node-divided bit streams and then transmits the divided bit streams, at least one user device (PU) through different physical channels. Thus, one data element is divided into multiple data elements, and data elements are passed through a number of physical channels, which is the number of data elements. In addition, when receiving data items, PU must perform data synchronization with the received data elements. Thus, as shown in figure 5, the MB-SC 502 has data in the form of at least two bit streams generated by the multimedia codec, and bit streams are transmitted to the GGSN 505 through a network that supports Internet Protocol (IP). Then the bit stream data is transmitted from the GGSN 505 in SGSN 507 by Protocol as GPRS (GTP). Then the bit stream data is transmitted from the SGSN 507 in RNC 509 via multicast IP (Iu interface). Then RNC 509 transmits the bitstream data in the Node-511. The bitstream data from the MB-SC does not require separation of the time of arrival in the Host-511. However, when transmitting data from Node-PU through the physical radio channels separated data elements transmitted over the respective physical channels.

Here is a procedure in which an arbitrary multimedia data is divided into basic level and improved the level and elements of the divided data are transmitted through appropriate channels so the Node-511 can effectively allocate transmit power to provide MBMS medium data rate (MDR), which is the task of the present invention.

7 shows the structure of a mobile communication system supporting MBMS, and the exchange of messages between the components according to the present invention. In this example, assume that the number of extensible data elements is equal to two multimedia bit streams. That is, it is assumed that the data can be divided into one data element of the main level and another data element of the advanced level.

First, in step 1001 PU 1050 sends the first request message MBMS (MBMS SERVICE REQUEST 1) to request the RNC 1052 to provide an arbitrary MBMS service X. the first MBMS request message includes identification information of MBMS, which requires PU 1050, and user ID, which is identification information PU 1050 that sent the first request message to the MBMS. In response to the first MBMS request message, the RNC 1052 updates the context services RNC, which he manages. That is, the RNC 1052 adds in the context of services RNC user ID PU 1050, identification information of MBMS requested PU 1050, and identification information of a cell that belongs to the specified PU 1050, i.e. unificationnow information Node-1051. After RNC 1052 added information, in step 1002 transmits the second MBMS request message (MBMS SERVICE REQUEST 2) to request the SGSN 1053 on the provision of MBMS X.

The above-described case, when the RNC 1052 updates the context services RNC, but the RNC 1052 may re-configure the context services RNC for MBMS X, if MBMS X requested PU 1050 is a new MBMS. RNC 1052 manages the newly-configured context services RNC (containing identification information PU 1050, identification information of MBMS requested PU 1050). In addition, the second MBMS request message includes identification information of MBMS requested PU 1050, and identification information RNC 1052, sending a second request message to the MBMS.

In response to the second MBMS request message from the RNC 1052, SGSN 1053 updates the context SGSN services it manages. That is, the RNC 1052 adds to the information context services SGSN user ID PU 1050, identification information of MBMS, which queries the specified PU 1050, and identification information RNC 1052 belongs to the specified PU 1050. After SGSN 1053 added information, in step 1003 transmits the MB-SC 1054 third MBMS request message (MBMS SERVICE REQUEST 3)requesting the MB-SC 1054 on the provision of MBMS X. the Above-described case, when the SGSN 1053 updates the context services SGSN, but SGSN 1053 may re-configure the context SGSN services for BMS X, if the MBMS X requested PU 1050 is a new MBMS. SGSN 1053 manages the newly-configured context services SGSN (containing identification information RNC 1052).

The third message MBMS request includes identification information of MBMS requested PU 1050. In response to the third request message to the MBMS, the MB-SC 1054, at step 1004 sends SGSN 1053 third response message MBMS (MBMS SERVICE RESPONSE 3). The third response message MBMS indicates that the third MBMS request message was properly made, and MBMS X was added in the context of services, based on the received information. This third response message MBMS includes identification information of MBMS.

In response to the third response message MBMS, SGSN 1053 in step 1005 transmits the RNC 1052 second response message MBMS (MBMS SERVICE RESPONSE 2), which indicates that the third MBMS request message was properly made. The second response message MBMS includes identification information of MBMS. In response to the second response message MBMS, RNC 1052, in step 1006, passes PU 1050 first response message MBMS (MBMS SERVICE RESPONSE 1), which indicates that the second response message MBMS was accordingly accepted. The first response message MBMS includes identification information of MBMS. PU 1050 receives the first response message MBMS and waits for transmission from the network to the other control information.

In the procedure, allowing PU 1050 to send the request for services in the MB-SC 1054 and to receive a response to request services from the MB-SC 1054, the process of messaging may be performed in the same manner as in the usual process of exchange of messages shown on Fig.6.

Then the MB-SC 1054 SGSN informs 1053 that MBMS X soon to be initiated, and is a service of the MBMS medium data rate (MDR). In addition, in step 1007, the MB-SC 1054 transmits the third message notification of MBMS (MBMS SERVICE NOTIFY 3) to identify PU willing now to take MBMS X. however, the above-mentioned step 1006 and the above-mentioned step 1007 may be a significant time interval. The purpose of the above steps 1001 through 1006 is verification of delivery of arbitrary MBMS. Other steps, containing the above-mentioned step 1007, designed to perform the procedure used for the delivery of MBMS. In other words, through the above-mentioned steps 1001 through 1006 PU must be informed about the planning associated with arbitrary MBMS or multiple MBMS. After receiving the notice, determine PU, should be taken MBMS. PU transmit the result of the determination in the MB-SC 1054. In response to the result of determination of the MB-SC 1054 determines whether to be provided with appropriate MBMS. Thus, the above steps 1001 through 1006 are performed before the actual giving us the iGO. The third message of the MBMS notification includes identification information of MBMS, the time of initiation of services, in which MBMS X will actually be provided, and the QoS information and the identification information indicating MBMS with an average speed of data transfer. After receiving the third message, the MBMS notification, SGSN 1053 establishes a channel (path) transmission for providing MBMS X and the Iu connection. Channel (path) in the network and the Iu connection is established in such a way that can be transmitted is divided information elements after separation of the basic level and the advanced level. In addition, the SGSN 1053 updates the context services SGSN, using the received QoS information. Then SGSN 1053 inform the RNC 1052 that MBMS X soon to be initiated, and identifies PU wishing to receive MBMS X. in Addition, the SGSN 1053, at step 1008, control passes to the RNC 1052 second message notification of MBMS (MBMS SERVICE NOTIFY 2), indicating that the MBMS should be soon initiated. The second message of the MBMS notification includes identification information of MBMS, the time of initiation of services and the QoS information. After receiving the second MBMS notification, RNC 1052 identifies the PU contained in a managed context services RNC and at least one honeycomb, which belong to the PU. Then in step 1009 RNC 1052 transmits the first message notification of MBMS (MBMS SERVICE NOTIFY 1), and thus RNC 1052 informs PU 1050 that MBMS X will soon be initiated. In this first message of the MBMS notification includes identification information of MBMS, the time of initiation of services, the QoS information and the identification information indicating MDR MBMS.

After receiving the first message notification of MBMS, PU 1050 determines whether you want to receive MBMS X currently. If PU 1050 wants to receive MBMS X, PU 1050 in step 1010 transmits the first response message for notification of MBMS (MBMS NOTIFY RESPONSE 1) in the RNC 1052 after saving the received QoS information and the identification information indicating MDR MBMS. The first response message to the MBMS notification includes identification information of MBMS and the identification information of the PU. In response to the first response message to the MBMS notification, RNC 1052 transmits in step 1011 in SGSN 1053 second response message for notification of MBMS (MBMS NOTIFY RESPONSE 2), indicating that the second message of the MBMS notification was made accordingly. After sending the second response message for notification of MBMS RNC 1052 updates the context services RNC by adding to the context of services RNC identity PU 1050, sending the first message to the MBMS notification, and identification information cell belongs to PU, and manages the updated context services RNC. The above-described case, when the RNC 1052 in step 1010 receives the first response message to the MBMS notification from only one PU 1050, what about the first message of the MBMS notification can also be obtained from a number of PU. In this case, the RNC 1052 updates the context services RNC, adding in the context of services RNC ID information PU and identification information SOT, to which they belong.

The second response message for notification of MBMS transmitted RNC 1052 includes identification information of at least one MBMS information and identification information of at least one PU. After receiving the second response message to the MBMS notification, SGSN 1053 updates the managed context services RNC, adding to the context of services RNC ID information PU and identification information RNC contained in the second response message to the MBMS notification. In addition, steps 1012 and 1022, SGSN 1053 passes in the RNC 1052 request message on the appointment of a unidirectional channel radio access (RAB) (MSMB RAB ASSIGNMENT REQUEST and MSMB RAB ASSIGNMENT REQUEST), needed to establish the transmission channels for the transmission of two streams associated with the MBMS X, i.e. the RAB. Because for one service only requires the transmission of two separate streams, separately passed two request messages about the purpose (RAB). Thus, for example, in the RNC 1052 one message is transmitted (step 1012) for the main level and another message (step 1022) for the advanced level. Request messages about the purpose of the RAB include identification information of MBMS, the QoS information and information about the level of the MBMS services with DR (indicating assotsiirovannoi or main level, either the advanced level). After receiving request messages about the purpose of the RAB, RNC 1052 identifies identification information hundred and PU contained in the context of services RNC. Then RNC 1052 is preparing the establishment of two radio channels for use in a cell, i.e. in the Node-1051, based on the received QoS information.

On the steps 1013 and 1023 RNC 1052 transmits a request message to establish a radio channel for MBMS (MBMS RADIO LINK SETUP REQUEST and MBMS RADIO LINK SETUP REQUEST) to request Node-1051 on the establishment of two radio to transmit two separate streams of MBMS X. When this request messages to establish a radio channel for MBMS is transmitted independently for primary and advanced levels. To transmit one of the two data streams associated with the MBMS X, each message includes information about canalobre code, the code scrambling, at least one number format for a slot, the encoding information channel, etc. for use in downlink data transmission (which is a physical channel for MBMS, similar PBMSCH described in connection with Figure 2). Received two request messages to establish a channel, the Node-1051 sets two downlink data channel, by using the information about canalobre code and information about the scrambling code contained in the request message, set the I channel, and completes the preparation for taking up a dedicated channel. Node-1051 on the steps 1014 and 1024 transmits in the RNC 1052 response message to confirm the establishment of the radio channel MBMS RADIO LINK SETUP RESPONSE and MBMS RADIO LINK SETUP RESPONSE)indicating that the establishment of the radio channel was performed. The response message to confirm the establishment of the radio channel must be transmitted separately for the basic and advanced levels.

After receiving the response message confirming the establishment of the radio channel RNC 1052 requests PU belonging to the Node-1051, for establishing two unidirectional channels. Thus, according to Fig.7, the RNC 1052 transmits in PU 1050 in steps 1015 and 1025 are two messages on the establishment of unidirectional radiocanada (MBMS RADIO BEARER SETUP and MBMS RADIO BEARER SETUP) to request PU 1050 to install two unidirectional channel. Messages about establishing a unidirectional channel must also be passed separately for the basic and advanced levels. Each message on the establishment of a unidirectional channel includes information about canalobre code, the code scrambling, at least one number format slot, etc. associated with the downstream data channel. PU 1050 completes the preparation for the reception of the downstream data channel and downward freely allocated the anal management using the information contained in the messages about the establishment of a unidirectional channel, and sets the uplink dedicated channel. After the establishment of the rising of the selected channel, PU 1050 on the steps 1016 and 1026 transmits in the RNC 1052 message about the completion of the establishment of unidirectional channel (MBMS RADIO BEARER SETUP COMPLETE and MBMS RADIO BEARER SETUP COMPLETE), indicating that the establishment of a unidirectional channel is completed. Completed establish a unidirectional channel must also be passed separately for the basic and advanced levels. Completed establish a unidirectional channel respectively include identification information of MBMS and the identification information of the user. RNC 1052 updates the managed context services RNC, adding in the context of services RNC ID information PU 1050, sent messages on the completion of the establishment of a unidirectional channel. Then after updating context services RNC on steps 1017 and 1027 RNC 1052 transmits in the SGSN 1053 confirmation message RAB assignment for MBMS (MBMS RAB ASSIGNMENT RESPONSE and MBMS RAB ASSIGNMENT RESPONSE), indicating that the channels of transmission of MBMS X fully configured. A confirmation message RAB assignment for MBMS should also be transmitted separately for the basic and advanced levels. A confirmation message is the purpose of the RAB for MBMS include identification information of MBMS and the identification information of the PU. After receiving the acknowledgement message RAB assignment for MBMS, SGSN 1053 updates the managed context services SGSN, adding in the context of services SGSN identification information of PU contained in the acknowledgement message RAB assignment for MBMS. After updating context services SGSN, on the steps 1018 and 1028 SGSN 1053 passes to the MB-SC 1054 third response message for notification of MBMS (MBMS NOTIFY RESPONSE 3), indicating that the preparation for the reception of MBMS X is complete. The third response message to the MBMS notification includes identification information of MBMS. MB-SC 1054 mobile communication system by following the above steps 1001 through 1018, provides two separate flow of MBMS X in PU 1050 on the steps 1019 and 1029, after receiving the third response message to the MBMS notification.

If in the above-described embodiment, the invention provides the MBMS service and the average rate of data transmission should be considered synchronization data associated with the divided data items. If the data streams are separated in the MB-SC, passed in PU on various routes (paths), then PU, capable of receiving the data stream of the advanced level, combines application-level data streams received at least two routes. PU can receive the best quality service, if the data streams are combined at the application level, cf is the ranking with the case, when PU accepts only one data stream of the main level. In addition, the PU must recognize the information about the timing associated with the data streams are separated in the process of combining data streams in such a way that it becomes possible to improve the quality of the received multimedia services.

Next, as an example, will be described a procedure in which the MB-SC transmits at least two separated flow data for MDR MBMS, and PU, which is located in the extended area has to synchronize the data associated with the data streams are separated at the reception all threads divided data through the appropriate channels.

In the second embodiment of the invention is a procedure for PU, received data of the advanced level, to synchronize the data associated with the data streams are separated using well-known transport Protocol real-time (RTP).

RTP was developed in accordance with provision of video conference, which is attended by many users. In addition, RTP is used for data transmission in point-to-point exchanges data requiring real-time characteristics, such as voice data and simulation data. RTP does not support reliability or is the guarantee of quality of services but is often used in applications that require synchronization between media with information in real time. On Fig shows the packet format in accordance with the Protocol real-time (RTP).

The first 12 octets (96 bits) are usually included in each RTP packet as a fixed header. Field source identifier (CSRC) is present in the new RTP packet generated by the mixer. The first two bits of the header indicate the number (V) the version of RTP. Bit (P) fill indicates if there are additional bits of padding that is not part of the payload 1107 RTP packet. Bit (X) extension specifies whether for the fixed header is the first 12 octets of the extension 1106 of title. Bits of the counter CSRC (CC) denote the number of CSRC identifiers that follow the fixed header. Bits M may be used for different purposes. As an example, the bit M is used as a label significance, pointing to the organization of frames in the stream of RTP packets. The payload type indicates the type of information contained in the RTP payload. Ordinal 1102 is incremented by one for each sent RTP packet and may be used by the receiver to detect packet loss and to restore packet sequence. The default sequence number is chosen at random. Label 1103 time about the means you make the selection of the first octet of the information contained in the payload 1107 of the RTP data packet. In addition, the label 1103 time is used to synchronize data carriers or within one of the media data and to calculate the variation of the delay.

Figure 9 shows a procedure that allows the PU to receive data elements associated with the basic level and the advanced level, and to combine these data elements, in which MDR MBMS uses described above, the RTP. In step 1201 PU produces the reception of the physical channel (or data signal of the physical channel corresponding to the main level. Received on the physical channel data from the primary level are decoded, and the decoded data of the physical channel is transmitted to the upper level at step 1202. The above-mentioned steps 1201 and 1202 described in more detail with reference to 11, which shows the structure of hardware of the receiver. PU receives the data of the physical channel corresponding to the advanced level in step 1211, and decodes the received data physical channel for transmitting the decoded data of the physical channel to the upper level at step 1212.

The decoded data of the physical channel corresponding to the main level, is transmitted to the RTP level at the above mentioned step 1202, and the level of RTP interprets the header information decoded RTP data physical channel is at step 1204. As shown in Fig, information of the RTP header includes a time stamp, the CSRC identifiers, etc. PU can detect real-time information associated with the basic level, performing the above-mentioned step 1204. In step 1203 PU saves the data in the main level, transferred to the above step 1202, in the input buffer of the decoding of the source, the time during which the interpreted information of the RTP header.

In step 1214 the level RTP interprets the header information of the RTP associated with the advanced level of the decoded packet data physical channel transmitted at the above step 1212, thus allowing VS to recognize real-time information associated with the advanced level. In step 1213 PU stores the data of the advanced level, transferred to the above step 1212, in the input buffer of the decoding of the source, the time during which the interpreted information of the RTP header.

Real-time information associated with the basic level, interpreted the above-stated step 1204, and real-time information associated with the advanced level, interpreted the above-stated step 1214, is injected into the controller at step 1220 to obtain temporal information and synchronization. The controller controls the buffer to store the data of the extended ur is VNA at the above mentioned step 1213, and a buffer to store the data basic to the above-mentioned step 1203, and synchronizes associated with two types of divided data. The above-stated step 1220 PU sends a signal 1205 control, thus controlling the input buffer of the decoding of the source data for the primary level. Next, the above-stated step 1220 PU sends a signal 1215 control, thus controlling the input buffer of the decoding of the source data for the advanced level. In step 1221 PU performs an operation of decoding a source for the output buffer, extracted in the above step 1203, and the output buffer, extracted in the above step 1213, so that the result is the output of one service. In the operation of the decoding of the source device combination (not shown) combines the basic level and the advanced level. As a result of the operation of the decoding of the source in the above step 1221, 1222 provide enhanced multimedia service. Typically the multimedia service may be a service of moving images. Not necessarily a multimedia service can support audiology and other services.

Property services MBMS medium data rate (MDR) is the selection of two data elements from one data element, and the transmission of the divided data items from the MB-SC in PD according to cnym routes. At least two data elements are distinguished from one data item at a physical level, and the divided data items are transmitted in PU on different physical channels. The data on the primary level is transmitted with relatively high transmission power, such that at least one PU in the whole cell can receive the data on the primary level, and the data of the advanced level are transmitted at relatively low power transmission, such that only the at least one PU in the extended area can receive data of the advanced level. In the above-described method must be defined power level assigned to the physical channel for the advanced level. The transmit power levels assigned to physical channels for the basic and advanced levels are different, so the number of physical channels that can take PU becomes different. Thus, when moving PU farther from the Node-B, PU can only accept data from the primary level. On the other hand, when moving the PU is closer to the Node-B, PU can receive not only the data on the primary level, but also the data of the advanced level. Next will be described various embodiments of the method for assigning a transmission power for the advanced level and method for determining whether a PU to receive physical Cana is at the advanced level.

The third variant embodiment of the invention describes an example method for assigning a transmission power in the Node C. the Node In the total transmitted power is determined. The transmit power used for the physical channel transmitted by the Node-B may not exceed a given total transmit power.

When providing services with arbitrary average data rate of MBMS Node In the first assigns the transmission power of the physical channel so that all the PU, located in the corresponding cell can receive the physical channel carrying data from the primary level. The site is In producing flexible appointment power transfer to another physical channel for data advanced level. There may be a way to maintain a constant transmit power associated with the physical channel carrying data from the primary level. Another way to change the power level for voice or packet data, thus changing the transmit power assigned to the physical channel for data advanced level of the MBMS services with MDR based on the changing power level. The latter method allows more efficient use of the transmission power of Node B, but the maximum transmit power for the data of the advanced level, is transmitted in PU, can change over time.

Another method assigns the transmission power for data advanced level based on the number of PU. In this method of transmission over the physical channel for data advanced level uses an appropriate level of power transmission via the antenna, providing the transmitting beam of a different type, different from the conventional transmitting beam in a region with high density PU.

The above assign transmit power is described below with reference to the structure of the hardware of the transmitter shown in Figure 10. According to Figure 10, one transport channel 1301 for primary data level is transferred from the MB-SC in Node-Century Data from the primary level contain information timestamps, which allows the receiver to receive the synchronization information. Transport channel (broadcast and multicast channel sharing (BMSCH)) is subjected to the following processing on the physical level. The device 1302 insert a cyclic redundancy code (CRC) inserts the CRC to the transport channel, and then the encoder 1303 channel performs channel coding for error correction. Then the unit 1304 speed negotiation transmission performs an operation of matching the transmission speed for the output of the encoder 1303 channel based on the length of the physical link. The output device 1304 speed negotiation front and produces one coded composite transport channel (CCTrCH). The MBMS service with MDR is characterized by the fact that the relevant data elements, i.e. the data in the main level and the advanced level, respectively, configure CCTrCH onto physical level independently, since at least two data elements should be separated and transferred. The unit 1305 performs interleave the interleave operation for a CCTrCH, representing the output device 1304 negotiate transmission speed. CCTrCH subjected to the procedure interleave device 1305 interleave, is converted to a physical channel (broadcast and group physical channel sharing (PBMSCH)) for BMSCH for the primary level. The physical channel is divided into channel I and channel Q Converter 1306 sequential code in parallel. Extenders 1307 and 1308 perform operations extensions to channels I and Q by multiplying the channels I and Q on a channelization code 1309. The multiplier 1310 multiplies advanced channel Q issued from the extender 1308, integrated value, and then the adder 1311 summarizes the Q channel from the multiplier 1310 with the channel I of the extender 1307. The above-described processing elements 1306 on 1311 corresponds to the usual four-level phase-shift keying (QPSK). The multiplier 1312 multiplies the modulated signal as the summation on the gain channel. The power level, desig the received physical channel for data main level, depends on the gain channel. The transmit power is controlled by the controller 1340 transmit power of Node C. the above-Mentioned physical channel must be able to transmit data to the base level at the border of the cell. Therefore, the controller 1340 transmit power of Node-In issues on the multiplier 1312 gain value of the channel data for the primary level, denoted by the reference 1313. The modulated signal multiplied by the gain value of the channel, is introduced into the multiplexer 1341.

On the other hand, in Figure 10, one transport channel 1321 data for the advanced level is transmitted from the MB-SC in Node-Century Data advanced level contain information timestamps, which allows the receiver to obtain information about the timing (synchronization). Transport channel (broadcast and multicast channel sharing (BMSCH)) is subjected to the following processing on the physical level. The device 1322 insert a cyclic redundancy code (CRC) inserts the CRC to the transport channel, and then the encoder 1323 channel performs channel coding for error correction. Then the device 1324 speed negotiation transmission performs an operation of matching the speed of transmission over the signal from the output of the encoder 1323 channel based on the length of the physical link. Output device 1324 negotiate transmission speed is generated coded stood the Noah transport channel (CCTrCH). As described above, the data of the basic level and the advanced level is intended for one service, but they independently configure the channel CCTrCH at the physical level. The device 1325 alternation performs the operation of alternation for the CCTrCH, representing the output device 1324 negotiate transmission speed. CCTrCH subjected to the procedure interleave device 1325 interleave, is converted to a physical channel (broadcast and group physical channel sharing (PBMSCH)) for BMSCH for the advanced level. The physical channel is divided into channel I and channel Q Converter 1326 sequential code in parallel. Extenders 1327 and 1328 perform operations extensions to channels I and Q by multiplying the channels I and Q on a channelization code 1329. The multiplier 1330 multiplies advanced Q channel extender from 1328 to the integrated value, and then the adder 1331 summarizes the Q channel of the multiplier 1310 with the channel I of the extender 1327. The above-described processing elements 1326 in 1331 corresponds to the conventional QPSK. The multiplier 1332 multiplies the modulated signal resulting from the summation on the gain channel. The power level assigned to the physical channel for data advanced level, depends on the gain channel. The transmit power is controlled to what key 1340 transmit power of Node-C. As described above, the physical channel transfers data of the advanced level should be set to the corresponding power level data for the advanced level. Therefore, the controller 1340 transmit power of Node-In issues on the multiplier 1332 the gain value of the channel data for the advanced level, denoted by the reference 1333. The modulated signal multiplied by the gain value of the channel, is introduced into the multiplexer 1341.

The configuration of the physical channel for data main level and the configuration of another physical channel data for the advanced level have been described with reference to Figure 10, but using the above described method can be implemented configuration, at least three physical channels. If configured one physical channel for data primary level and at least two of the physical channel for data of the advanced level, each of the physical channels for data advanced level can be configured (shaped) elements 1321 in 1341. The second channel 1335 advanced level is amplified by the amplifier 1336 managed by the controller 1340 transmit power of Node-Century

The multiplexer 1341 multiplexes all of the physical channels to obtain one output signal. The extender 1343 performs scrambling by multiplying the output is ignal multiplexer 1341 code 1342 scrambling. Modulator 1344 modulates the scrambled signal which is the result of scrambling, and then radio frequency (RF) module 1345 converts the modulated signal into the RF signal. Antenna 1346 transmits the RF signal over the air.

Next will be described the operation of receiving at PU MBMS services with MDR and the structure of the hardware PU. The fourth variant embodiment of the invention describes as one of the examples of the way PU located in a cell that distributes the MBMS service with an average transfer rate (MDR), to receive and process service. Even if the PU is present at any location within a cell that distributes the MBMS service with MDR, PU can be physical channel for data main level. At the same time receiving a physical channel for data of the advanced level is determined by the distance between the PU and the corresponding Node C. Accordingly, the PU determines whether data to be taken at the advanced level, and then the handset should determine whether it can accept only data from the primary level or the data in the main, and advanced levels.

The simplest way is that PU is always receives the data of the advanced level, if it is able to accept data at the advanced level. In this case, if the PU is located in the extended area as PU 302 figure 3, it is m who can take the data of the advanced level. On the other hand, if the PU is located in the core area, as PU 303 figure 3, identifies errors associated with CRC, when receiving a physical channel for data advanced level, and therefore, the PU can only accept data from the primary level. Can also be considered in other ways.

Another way is that the Node-PU informs about the power level assigned to the data of the advanced level, and about the power level assigned to the common pilot channel (CPICH). The method of informing PU about the power level of the transmission uses a broadcast channel (WPC) or direct access channel (FACH). If between the PU and the Node-set selected channel, the Node-b can inform PU about the power level on the selected channel. Through the above-described method PU can identify the value of the transmit power assigned to the data of the advanced level, using the ratio of the transmit power. I.e. as PU can measure the received power of the CPICH channel, PU can measure the received power over the physical channel for data advanced level based on the measured received power of the CPICH channel, thereby determining the whether the PU to take a physical channel for data advanced level.

Two described above as examples of the method are associated with p is ocedure definitions can PU to take a physical channel for data advanced level. Next will be described the procedure of reception of a physical channel for data advanced level with reference to 11.

Figure 11 shows the structure of hardware PU, receiving the MBMS service and the average rate of data transfer. RF module 1402 converts the frequency of the RF signal received through the receiving antenna 1401. I.e. the RF module 1402 converts the high frequency signal into a low frequency signal. Filter 1403 outputs the signal to the desired frequency. The device 1405 diskriminirovaniya (narrow spectrum) multiplies the signal code 1404 scrambling, allowing, thus, the PU to distinguish the signal from the Node-Century Code 1404 scrambling, as shown figure 11, must be the same as the code 1342 scrambling, shown in Figure 10, resulting in PD 11 can communicate with the Node In Figure 10. The output signal of the device 1405 diskriminirovaniya fed into the demodulator 1411, which performs QPSK demodulation. Channels I and Q are allocated from the output of the device 1405 diskriminirovaniya the demodulator 1411. Then the device 1412 narrow spectrum multiplies the separated channel I on a channelization code 1415. The multiplier 1413 multiplies the separated channel Q on the integrated value. The multiplier 1414 multiplies the signal output from the multiplier 1413 on a channelization code 1415. The inverter 1416 steam is thelego code in serial converts the channels I and Q, multiplied by a channelization code 1415, in the physical channel for data main level. A channelization code 1415 shown figure 11, must be the same as a channelization code 1309 shown in Figure 10. Because the physical channel for data main level can be taken throughout the cell area serviced by the Node-B, PU is always able to receive and decode a physical channel for data main level. The physical channel for data main level in turn is subjected to the operations of the inverse interleave device 1417 reverse interleave, reverse selection (approval) speed running scheme 1418 reverse speed negotiation and channel decoding performed by the decoder 1419 channel. After the operation of decoding the channel data from the primary level are operated check code CRC scheme 1420 test CRC code. If the result of the operation check code CRC not an error is detected, the result is a transport channel 1421 data for the primary level, which is a broadcast and a multicast channel sharing (BMSCH).

On the other hand, when inputting the output signal from the device 1405 diskriminirovaniya in the switch 1406, it is put in the demodulator 1431 and was subjected to various operations discussed above, if the switch 1406 noodels is in an enabled state. Channels I and Q are allocated from the output of the device 1405 diskriminirovaniya, including the input symbols using QPSK demodulation performed by the demodulator 1431. Then the device 1432 narrow spectrum multiplies the selected channel I on a channelization code 1435. The multiplier 1433 multiplies the selected channel Q on the integrated value. The multiplier 1434 multiplies the signal output from the multiplier 1433 on a channelization code 1435. Converter 1436 parallel code in serial converts the channels I and Q multiplied by a channelization code 1435, in the physical channel for data main level. A channelization code 1435 shown figure 11, must be the same as a channelization code 1329, shown in Figure 10. The physical channel for data advanced level in turn is subjected to the operations of the inverse interleave device 1437 reverse interleave, operations, inverse operations coordination speed transmission performed by the circuit 1438 perform a reverse operation speed negotiation transmission and channel decoding performed by the decoder 1439 channel. After the operation of decoding the channel data of the advanced level are operated check code CRC scheme 1440 test CRC code. If the result of the operation check code CRC not an error is detected, the result is a transport channel 1441 Yes for the data of the advanced level, representing broadcast and multicast channel sharing (BMSCH).

In the first method, which allows the PU to determine the receive data of the advanced level, PU determines whether the physical channel is accepted without errors through the operation check code CRC performed by the circuit 1440 test CRC code. If the physical channel no errors were detected in the result of this determination, the data on the primary level and the advanced level is transmitted to the upper level so that it can be provided with the service of the advanced level. On the other hand, if the physical channel is identified errors in the result of this determination, only the data on the primary level is transmitted to the upper level so that service is available main level.

On the other hand, in the second method, which allows the PU to determine the receive data of the advanced level, i.e. in the way that the Node Is In PU informs about the transmission power in the physical channel for data advanced level, PU predicts the signal strength in the received PBMSCH, using signal strength in the received CPICH, and the ratio of the power of the CPICH transmission and power transmission PBMSCH, denoted by the reference 1409, on which the Node Is informed In advance of PU. In this case, the controller 1407 receive advanced level determines whether the PU to take Phi is practical channel (PBMSCH) data for the advanced level, using the power of admission to accept PBMSCH, and managing the switch 1406. Thus, if the controller 1407 receive advanced level determines that PU can be physical channel (PBMSCH) data for the advanced level, the controller turns the switch 1406 is in its on position. On the other hand, if the controller 1407 receive advanced level determines that PU can't take physical channel (PBMSCH) data for the advanced level, the controller turns the switch 1406 is in its off position.

Figure 11 physical channel 1457 obtained using baseband code 1455, may be regarded as one physical channel for other data associated with the MBMS service with MDR, or as another physical channel for other services other than MBMS. There are a number of physical channels for other purposes designated by the reference 1458. The operations performed by the elements 1450-1457 and 1414, similar features similar elements described above.

From the above description it is obvious that the present invention provides a method of providing one service broadcast and multicast (MBMS)using scalable multimedia codec, at least two unidirectional channel and at least two of the physical channel. According to the present invention houses the internal consumption transmit power at the Node-b can be prevented and, therefore, the transmit power of Node-b can be used effectively. Moreover, according to the present invention may be provided with an increased number of services. In addition, the present invention allows to flexibly assign resources capacity for services other than MBMS.

Although for illustrative purposes have been set forth preferred embodiments of the present invention, specialists in the art will recognize that various modifications, additions and substitutions without departing from the boundaries of the scope of the present invention. Thus, the present invention is not limited to the above-described variants of the implementation, but on the contrary, the present invention is defined by the following claims together with their full scope, including equivalents.

1. How to transfer data from a Node In the first user device (PU), located within the second area of the cell served by the Node B, and the second PU, located within the first area of the cell served by the node B, and the first cell region includes the second cell, the first cell region includes a boundary cell and the second cell, wherein the transmit key data to the second PU when the power level, allowing the second PU, located on the border of the cell PE the front area of the cell, to take the basic data and master data includes encoded basic data and extended data transfer in the first PU when the power level, allowing the first PU, located within the second cell region, to take advanced data supplementing these basic data, and the first PU can receive data of higher quality compared to the second PU by taking all of the basic data and the extended data.

2. The method according to claim 1, characterized in that the basic data and extended data transmitted Node-To include timing information to synchronize the data.

3. The method according to claim 2, characterized in that the power level for transmission of the extended data is less than the power level for transmission of the main data.

4. The method according to claim 3, characterized in that the power level for transmission of the extended data is administered in accordance with the amount of PU that are located within the second memory cell.

5. Method separate the flow of the basic data and extended data stream that is complementary to the main data flow, through separate channels from a Node In a mobile communication system which receives a stream of basic data and the extended data stream as the data belonging to the same service, and provides a stream of basic data and the extended data stream uses in the research unit (PU), located within a cell, characterized in that the transmit main data flow to the user device when the first power level, allowing PU, located within a cell, to receive the main data flow, and transmit the extended data stream at an end user device at the second power level lower than the first power level.

6. The method according to claim 5, characterized in that the flow of the basic data and the extended data stream transmitted by the Node-B, include timing information to synchronize the data.

7. The method of receiving user device (PU) basic data and extended data, supplementing the basic data transferred through various channels by the Node-B, and basic data and extended data is separated from the predetermined data, wherein if accepted as the basic data and extended data, combine the first data generated by decoding the basic data and the second data generated by decoding the enhanced data, on the basis of the time information for synchronization of the data contained in the basic data and extended data, and generate combined data, and in the case if basic data and extended data taken, decode key data and produce the decoded key data.

8. The method according to claim 7, characterized in that it further examine the code, cyclic redundancy code (CRC) for the second data generated by decoding the enhanced data.

9. Device for transmitting predetermined data to a user device (PU), located within the first region includes the second area and the first area accepted data transmitted by the Node B, the transmitted data is divided into basic data and extended data, supplementing the master data, characterized in that it contains the first transmitter to send extended data when the power level, allowing PU located within the second region, to take extended data, and a second transmitter for transmitting main data when the power level, allowing PU, located within the first region to take the basic data.

10. The device according to claim 9, characterized in that the Assembly passes the basic data and extended data containing time information for synchronization of data.

11. The device according to claim 10, characterized in that it further comprises a controller to control the transmit power of the first transmitter to transmit the extended data and the transmit power of the second transmitter for transmitting the master data.

12. Device is about 11, wherein the first transmitter assigns the transmission power for extended data, based on the amount of PU that are located within the second region.

13. Device for receiving user device (PU) basic data and extended data, and PU includes a decoder for separating the main data and enhanced data from the predefined data and individual decoding the basic data and extended data transmitted through different channels Node, characterized in that it contains means for receiving at least the first decoded data obtained by decoding the main data or the second decoded data obtained by decoding the enhanced data, and receiving time information about the first and second decoded data and a device combining for combining the first decoded data and second the decoded data on the basis of timing information to synchronize the data when receiving the first decoded data and second decoded data.

14. The device according to item 13, wherein the device for combining outputs the first decoded data if accepted, only the first decoded data.

15. The device according to item 13, characterized in that it further contains the schema examining the code, cyclic redundancy code (CRC) to verify the CRC code extended data, moreover, the extended data is decrypted only if the error was not detected during the operation test CRC code extended data.



 

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