Method, device and communication network for eliminating signal interference when conducting radio

 

(57) Abstract:

The invention relates to a method, device and the telecommunications network to eliminate signal interference when conducting two-way communication with time division, when messages are transmitted in the first direction of communication in the first time segment and the second direction of the communication in the second time segment. In the method, the device and the telecommunications network in accordance with the invention, the said first time segment in the first direction of the communication is detected and on the basis of this detection is set so the second time segment, which will not overlap said first time segment. Technical result achieved: prevention of conflicts between the transmission of ascending and descending lines. 4 C. and 13 C.p. f-crystals, 6 ill.

The invention relates to a communication method, a mobile radio device and the communications network to resolve overlapping signals when performing duplex communication with the separation time, when messages are transmitted in the first direction of communication in the first time segment and in a second opposite direction of the communication in the second time segment.

Most of coveragei switching channels. Technology circuit-switched connection is maintained during the entire communication session, although in some periods of time no information is transmitted. This leads to unnecessary resource reservation transfer, which are separated by many other users, thus maintaining a connection channel with one person over-reserving transmission resources of other users. Another drawback of this technology switching channels is intermittent feature service data. It is known that when the information transmission packet switching data provides a more efficient use of the channel.

As well as fixed networks future mobile communications network should provide for transmission over conventional switches and packet switching, for example, in integrated digital networks (ICSS) and asynchronous transfer mode (ATM). As you know, in the movable communication network Protocol is used, based on the technology MDPR (multistation access packet redundancy). It is also called "packet radio". MDPR is seal technology package formatted digital voice or data carrier separation time. Intraischemic split time at specific intervals. The Protocol MDPR was developed for use breaks in the voice to support a larger number of subscribers than it can provide telephone channels are separated in time by the carrier. In this case, the channel for the mobile station is allocated only for the duration of the call, and upon its completion, instead of creating unnecessary reserve for this station this channel is freed for other purposes, for example for use by other mobile stations in the cell of the cellular network. The Protocol MDPR used in mobile cellular communication systems for communication between the mobile station and the base station. The line of communication from the mobile station to the base station is called the ascending line and the connection line from the base to the mobile station is called a downline.

Known mobile communication system based on multiple access with time division multiplexing (mdvr) typically use full-duplex communication with a temporary (DDA) or frequency (HDR) division of channels. In the system, based on the DDA, the ascending and descending lines typically operate on a single frequency, time-shared, that is, the transmission is carried out at different time intervals. The information transfer is carried out in a temporary segment time segment, and the base station sends signals down the line in a different time segment. In several communication systems based on switching channels, temporal partitioning is implemented, for example, emitting a certain time segment of the frame of a particular mobile station, for both upward and downward due to the delay of the rising of the frame, for example, at several time segments compared to the downward frame. In the same time slots in the uplink and downlink frames do not overlap each other. Such a system is described in the publications EP 564.429 and USA 5.444.698. In this type of systems, upstream and downstream communications lines depend on each other, the time segments for the mobile station placed in pairs for ascending and descending lines; in other words, are used simultaneously for transmission and reception. Thus, it is possible to eliminate conflicts between descending and ascending lines. On the other hand, this system is inefficient use of resources. In addition, if the allocation or reservation of temporary segments for a certain mobile station is symmetric, this mobile station uses to transmit and receive a number of the, based on PRMA protocols (MDPR) and GSM GPRS (General packet radio service for mobile radio systems General purpose or oops RSPK), which is described in more detail below. In such a system, upstream and downstream communications lines are independent from each other, i.e., the mobile station has a single temporary segment transmission for uplink and a single temporary segment receiving downlink.

In a system using the above-mentioned duplex communication with the channel frequency division (HDR), passing by ascending and descending lines at different frequencies. In such a system, the transmission and reception can occur simultaneously. On the other hand, there are systems like the STS, which is used and the split time and frequency multiplexing, i.e., even if transmission and reception are at different frequencies, they do not occur simultaneously.

The lack of systems in which transmission of ascending and descending lines are independent from each other, is to overlap or superposition of signals transmitted in the ascending and descending lines. In systems where transmission in the ascending line does not depend on the transmission downstream, the base station does not know how get down the line. This situation is shown in Fig.1, where the descending and ascending transmission independent of each other and in the center of the frame mdvr ascending and descending lines perform simultaneous communication towards/from the same mobile station, causing signal interference, wherein at least one of the transmitted messages is lost. For example, in the above-mentioned packet radio, which uses upstream and downstream transmission, independent from each other, the packets are generated at points in time that are almost impossible to predict. Similarly, packets sent by the base station may arrive at the mobile station completely unpredictable. In this case, the packets transmitted in the ascending and descending lines can overlap, leading to loss of data in at least one direction. Overlay or overlap may occur between different data streams or between packets of the same connection if, for example, the mobile station confirms the previous transmission, so the handshake signals in the ascending transmission and subsequent downward transfer can be superimposed on each other. There is a way to prevent this is by acylcoa the next batch of data. However, it is possible that during the next transmission on the uplink from the mobile station will be simultaneous data transmission from base station to mobile stations in a descending line. Another way to avoid signal interference is the equipment of the mobile station with two transceivers. However, this is undesirable because of the increased cost and size of the station. The base station is typically equipped with multiple transceivers, this is not a problem, but the real difficulty is associated with the presence of mobile stations having only one transceiver, which in this embodiment may not send and receive data simultaneously and, thus, not capable of operating in full duplex mode.

The aim of the present invention is to prevent conflicts between the transmission of ascending and descending lines. This goal is achieved in a duplex communication system time division channels by detecting time segment used in the first link direction, and execution on the basis of selection for the second direction of communication of such temporary segment, which will not overlap on a time segment used in the first direction is different from the establishment of the fact, that particular mobile station is not intended for simultaneous transmission and reception of messages (in this specification, such a mobile station is called a simple or semi-duplex). This station during virtual connection gets through official channels temporary segments that will be used in downlink, and chooses for his ascending line time segment that does not overlap the time segment used for downlink. In this case, the mobile station transmits to the network a request for the channel in this time segment, which is not superimposed on the downward time segment, as a pointer to the fact that uplink she needs time segment, which was transferred to this request, and simultaneously informs the network that it is "simple" mobile station. Additionally, it can inform you the number of time segments, if it is greater than one. To confirm the reservation channel network issues in the descending line receiving temporary segment that should be used for uplink. It is advisable that network, such as a base station, chose this downward time segment that does not overlap the least washout to use its allocated time segment, but it must again identify time segments used in downlink, and to send a new request on the channel. If control signals reservation channel is concentrated in the common control channels a certain time segment, and the load is distributed in various time segments, the mobile station can request the channel to indicate the time segments, which it can use in uplink. In this case, the network, such as base station may reserve one of the channels identified as available for use by the mobile station for data transfer.

The invention can be implemented in another embodiment, based on the fact that the network (for example, a network server or base station) when receiving data in the ascending line identifies from the data transmitted code of the mobile station and, thus, sets the time segment used for uplink (time segment, which was adopted by a rising transfer) and selects the downlink of the mobile station temporary segment that does not overlap the ascending pass. The network informs the mobile station of the temporal segment of the descending line, and the mobile station automatically uses the SNO invention, two versions of which are described above, can be implemented using a device, used in two-way communication with time division channels. This device contains a means for detecting time segment used in the first link direction and a means for selecting a temporary segment for the second communication direction based on the received information, so that it does not overlap said first time segment.

The invention is particularly useful for communication, in which the upward and downward transmission is not dependent from each other.

According to the first aspect of the invention proposes a method for eliminating overlapping messages in a telecommunication network for two-way communication with time division multiplexing, in which in the first direction of the communication, transmit the message on the first channel from the mobile station to the base station in the second opposite direction of the communication, transmit the message on the second channel from the base station at the mobile station, the first and second channels for the mobile station post base station and at least one channel, authorized for use by the mobile station as the first channel, with the tion, the first channel used in the first link direction, find the base station by detecting the identification code of the mobile station from the message received from the mobile station, for the specified second channel, based on the specified detection, the base station selects one channel, so it does not overlap with the first channel and the selected second channel reported by the mobile station.

According to the second aspect of the invention features a mobile station for two-way communication with time division channels to the base station in the telecommunication network, in which in the first direction of the communication, transmit the message on the first channel from the base station to a mobile station in a second opposite direction of the communication, transmit the message on the second channel from the mobile station to the base station, and the first and second channels are placed in the specified network, and the mobile station includes a tool for communication in the first direction of communication in the first channel and the means of communication in the second direction of communication in the second channel, characterized in that that it further comprises means (21) for informing the telecommunication network of the communication capabilities of the mobile station for overome channel only in different time periods or capable of communication on the first channel and the second channel at the same time.

According to a third aspect of the invention proposes a device for two-way communication with time division channels to the mobile station in a telecommunication network, in which in the first direction of the communication, transmit the message on the first channel from the mobile station to the base station in the second opposite direction of the communication, transmit the message on the second channel from the base station at the mobile station, and the first and second channels for the mobile station is placed in the specified network, the specified device contains a means for communication in the first direction of communication in the first channel, the means of communication in the second direction of communication in the second channel, and means to communicate at least one authorized channel intended for use by the mobile station as the first channel, characterized in that it further comprises means for detecting the specified first channel used in the first link direction, by detecting an identification code of the mobile station from the message received from the mobile station, means for selecting for the specified second channel, based on the specified detection, for the second direction of communication, such a channel, which will not be glasno fourth aspect of the invention features a telecommunication network, contains the support node, base station and mobile station of the mobile network, and to implement two-way communication with time division channels specified telecommunications network includes a means for communication over a telecommunications network in the first link direction in the first channel, a means for communication over a telecommunications network in the second direction of communication in the second channel, means for placing the first and second channels for the mobile station and means for communication with at least one authorized channel intended for use by the mobile station as the first channel, characterized in that it further comprises means for detecting the specified first channel, used in the first link direction by detecting the identification code of the mobile station from the message received from the mobile station, means for selecting for the specified second channel, based on the specified detection, for the second direction of communication of such a channel, which will not overlap with the first channel, and means to communicate the second channel of the mobile station.

The invention is described below with reference to the attached drawings, NII, when there is signal interference,

in Fig. 2 shows the structure of a telecommunication network oops RPC packet-switched data to be transferred,

in Fig. 3 shows an example of transmission service signals at the entrance of the mobile station in the network,

in Fig.4 presents a block diagram of the mobile station according to the invention.

in Fig.5 presents a block diagram of a base station according to the invention,

in Fig.6 presents a block diagram of a network server according to the invention.

For a better understanding of the invention below with reference to Fig.2 and 3 describes the known radio system with packet switching, in which the upward and downward transmission lines do not depend on each other and in which, accordingly, there is a risk of signal interference. Also describes variants of the invention, when the scope of preferably the same. Service SIMPSON (mobile packet radio General purpose) is used as an example of the development of the universal mobile radio systems (oops). SIMPSON is a new service oops, uses packet switching in radio telephone subscriber network oops. System SMPSON reserves radioresource only if you need h the I usual network circuit-switched system, the STS was developed for the transmission of voice through dial-up channels. The main purpose of the service SIMPSON is to implement the connection between the mobile station and the network of public data, using known protocols such as TCP/IP, X.25 and CLNP. However, there is a certain connection between the service SMPSON with the packet switching and maintenance of switched circuits system oops. The resources of a physical channel can be used repeatedly, and some other system signals can be shared. Time slots can be reserved in the same carrier for maintenance of the switched channels and packet radio SIMPSON.

In Fig. 2 shows the connection of a telecommunication network with packet radio, SIMPSON. For service SMPSON the main element in the network infrastructure, SIMPSON is the so-called universal support node UUP (server SIMPSON). This program is a router, which handles the connection and interaction between different data networks, for example, network packet data for General use (SPD) via interface Gi or another computerway network SMPSON via the Gp interface, control of mobile communications with registrars of SIMPSON via the Gr interface and transfer data packets to the mobile station NY center (MCC) or it can be implemented as a separate network element, based on the architecture of programs and data routing network. User data to pass directly through the Gb interface between the server UUP and system base stations (SBS), which consists of base stations (BS) and base station controllers (ASC). Between the server UUP and mobile switching center MCC entered the service chain alarm Gs. In Fig.2 solid lines between blocks presents the data, and the dotted line indicates the alarm circuit. Physically, the data may pass transparently through the switching center mobile communications (ICC). The radio interface between the base station BS and the mobile station PS is marked by the position of Um. The positions of the Abis and represent the interface between the base station BTS and the base station controller ASC and, respectively, between the base station controller ASC and mobile switching center MCC, which is a chain transfer service signals. Position Gn represents the interface between the different servers of the same operator. The nodes support are usually divided into firewall maintenance hosts Muo (Internet server MSS) and local service nodes (local servers MS), as shown in Fig.2.

In Fig. 3 to work. First mobile station and the network SMPSON synchronized, as is done in conventional mobile networks oops switched. When the mobile station wants to join the network packet switching, using, for example, the shared registration service LFS, it begins the process of logging into the system, a process called successful LFS. The mobile station PS first transmits to the system a base station a request for radio traffic (stage 1). The system base station SBS confirms the request (stage 2), then the mobile station PS sends to the system base station service request packet (stage 3). After identification of the station in the centre of the mobile communications A.S. and currency codes (stage 4) between the mobile station PS and the network connection is just as it happens in the known system, oops. After that, the mobile station PS sends to the service packet switching MS (stage 5) a request for inclusion in the network packet switching. The request contains, among other data identification code of the mobile subscriber and the information about the encoding parameters. The MSS server performs a process of requesting an address for the local server (step 6). Local server MS transmits a request for the login of magnetization (stage 8) and responds to the request logon (stage 9). At this stage the local server MS confirms the login mobile station substation (stage 10) and allocates to the mobile station PS identifier temporary logical line WL, which will be used as the address in the data transmission between the mobile station PS and the local server MS. This line WL is used to identify the mobile station PS in the radio interface Um. Confirmation of login from the local server MS transmitted to a mobile station, also typically includes an identifier of the mobile station and the identification code of the cell cellular (which is the mobile station). As for stage 10, the packet radio technology known that the mobile station is placed in a channel or a time segment in the frame mdvr used for transmission and reception, which means pairwise accommodation uplink and downlink. In the system interconnection service oops, SIMPSON local server MS informs the mobile station PS about one or more downstream channels for use in downlink. The mobile station PS confirms that she is ready for packet radio (stage 11), after which there is an exchange of message encoding options between osvobozhdaetsya (stage 13).

The mobile station receives the channel as soon as it will give the network (base station) a request for the channel in the form of a data packet random access, which may also be called " packet reservation channel. The mobile station can transmit the request to the backup channel of the DPP in the logical channel reservation (so-called channel TTD) in the time segment provided for this purpose. The network confirms the request, the transmitting mobile station signal handshake packet RAP (providing access to the package).

Above the stage shown in Fig.3, the instruction maintenance oops 04.60 service oops, SIMPSON and well-known experts in this field. In the system depicted in Fig.3, the upward transmission from the mobile station PS to the base station BS and downstream transmission from the base station SU to the mobile station PS do not depend on each other and can be superimposed signals ascending and descending passes.

To avoid overlapping signals in the communication system with mobile objects, in the first embodiment of the invention specifies that if the operator of the mobile station knows that he can't send and receive odnovremenno duplex radio by joining the system, in other words, it reports that it's running on simple mobile station. In the previous example, descriptions of the firewall server oops, SIMPSON mobile station can transmit this information to the server MS to stage 5, i.e. when the connection with SIMPSON on request login. This information may, for example, consist of one or more bits, for which the base station BS or MSS server recognizes the mobile station as "simple".

If the mobile station PS is moved to the service area of another MSS server, it sends you to this new server MSS update request routing (stage 5 in Fig.3), where this information is then transmitted to the server Muo (stage 7), which updates the information (stage 8) and transmits the response to the mobile station (stages 9 and 10), as proof of the change of the routing table. In this case, the mobile station shall again when prompted to change the routing to announce that it is "simple" mobile station. This type of information may also include data about the number of requested temporary segments.

After the mobile station is to be recognized as "simple" mobile station, the base station BS or the MS server determines which time suppresive for transmitting channel at TTD in this time segment, which causes the imposition of transfer in the descending line. In the example of Fig.3 this can happen on stage 10, when the MSS server confirms the entry of the mobile station in a system of packet-switching.

If the mobile station PS is moved to the service area of another server MSS and transmits this new MSS server a request to change the routing, as described above, it receives from the new server MSS confirmation of the request to change the routing (Fig.3 - stage 10) and information about the time bucket that you want to use in downlink.

If the mobile station PS is required to send a message using the algorithms access control DPT (access controller), it reveals allocated to transmission time segments of the service channels (for example, from well-known experts system oops, SIMPSON). Additionally, when you log into the system operator of the mobile station will know what time the segment/segments allocated/s for transmission in the downlink. Based on this information, the mobile station PS transmits to the network a request for TTD channel in this time segment that does not overlap the time segment used for downlink. In confirmation of the sent request, PS informs the network that is "simple" mobile station. Additionally, it may report the number of time segments, if there is more than one. The number of time segments in ascending line should not be the same as in downward, but the mobile station may reserve, for example, three temporary segment in the ascending line and two temporary segments in descending order.

If control signals on request on channel pass centrally in the common control channels a certain time segment, and sending the phone load is in other time segments, the mobile station PS may request to reserve the channel to ask the DPP to specify which time slots it can use in the ascending line. This type of information may consist of 8 bits and, if there are 8 channels or actually temporary segments in the frame mdvr in the system of the COC, each bit corresponds to a channel. Bit "0" may indicate a channel that is not required by the mobile station, and the bit "1" may refer to a channel that the mobile station wants to use to communicate upward. Alternatively, the information may consist of 4 bits, where one bit indicates that PS - "prom PS can receive messages. Then, the network allocates a mobile station corresponding to the channel for transmission on the uplink. Channels descending data suitable for the considered mobile station PS, should be agreed as soon as you enter into the system (Fig.3). Now the network, such as base station BS can reserve one of the channels required for PS data.

In the confirmation request channel network allocates a temporary segment for downlink. Preferably the network, such as network server MSS or base station BS selects, respectively, the time segment in the descending line, so that it does not overlap with the time segment of an ascending line. If due to any reason there is overlap of the signals, the mobile station PS will not be able to use its allocated time segment and must transmit the request for a new channel to the server TTD.

The mobile station has means for detecting time segment used for downlink, and means for selecting a temporary segment uplink, based on the received information, so that it does not overlap the time segment used for downlink. This embodiment of the mobile station described below is, for example, network server MSS or base station BS), upon receipt of the signal from the mobile station PS uplink, reads out data transmitted identification code of the mobile station, detects the time segment used for uplink, and chooses to transfer the downward side of this time segment, which will not block the transfer upward.

In connection with the request for the channel from the mobile station PS in the server TTD upward base station reads from the request to the channel server TTD identification code of the mobile station, detects the time segment used for uplink, and chooses to transfer down the line of the mobile station such a time segment, which will not block the transfer upward. The base station confirms the request PS for packet communication request TTD channel with feedback RAP with information about the time bucket to be used by the mobile station. To implement this second variant of the invention the network, such as the base station has a means for detecting time segment used for uplink, and means for selecting a temporary segment nished the variable segment, used in uplink. The base station may be, for example, reference table, in which it updates the time segments upward and downward communication for different mobile stations. The implementation of a base station for this option are described below in more detail.

If the system uses more than one time segment in ascending and descending lines, the network selects, respectively, all of the temporary segments in the descending line, which does not overlap the time segments of the ascending line.

When comparing the above-described first and second options, you can see that the difference is that in the second embodiment, the base station must somehow identify the mobile station, i.e. to establish its authenticity (actual, temporal or other identification). There can be problems. For example, 87-bit request on the channel or on the access network that contains only 36 coded bits not related to the channel information, there is no place for the identification number or code of the mobile station. In this case, the base station BS will not be able to identify from the received packet TTD, which of the mobile stations within the service area PE nce in the second embodiment can select a time segment for transmission over the uplink and the corresponding time segment for transmission down the line so, that they will not overlap each other, since the mobile station is synchronized with the network immediately after it is enabled, as described above. Additionally, as in the known systems based on the technology of the access network with the mobile communication system, the mobile station contains a timer with which this station determines the exact time synchronization ascending and descending temporary segments.

In the next version of the invention the mobile station PS is described with reference to Fig. 4. The transmitter station has a buffer 20, which stores data intended for transmission. The buffer 20 is connected through a chain of request channel (or PPD) driver 21 (TTD arbitrary package access), which has data about the capabilities of the mobile station, i.e., whether it is duplex or half-duplex. When data arrives in the buffer 20, it sends a control signal to the driver PPD 21, which generates a request to the channel for transmission of the DPP. If the mobile station is half-duplex, driver PPD forms such request packet on the channel, which gives the information that the mobile station is "simple" mobile station, and the requested number of time segments. The formation of touch binary digits added to the package TTD in the imaging unit 21 to enter the above information in the package. This package, in any case, is a group of binary digits, which are formed in the PPD driver 21. Edit or add to the information carried by the forming of the package, which is slightly different from the normal package content added information. Furthermore, according to this variant of the invention the data packet to TTD can be performed in a time segment, which eliminated the possibility of overlap in the data transfer. Information bits in the packet TTD encoded according to the method of PIO (forward error correction) in the node coding errors 22 by passing all data to the switch 23. Data to the switch 23 serves also from the buffer 20, from which packets are extracted for packet switching and forward error correction (PIO) in the second node encoding errors 24 and then passed to the interleaver 25, in which the data is alternated for transmission. The switch 23 is in position And when the transmission of the data packet and the position At the time of transfer of service requests on channel TTD. One output of switch 23 is designed to transfer data to the modulator-transmitter 26 in which the data is modulated and transmitted in a packet (or packets) on the radio interface. Formirovanie the ligature of the mobile station and is part of KMD (controller multiple access controller or access to the medium (not shown)), which controls the operation of the packet communication with the mobile station. The controller KMD requests for uplink such a time segment that does not overlap the time segment used for downlink, and manages service TTD, which will be sent to the selected time segment uplink.

In the receiving part of the system package pulses is received and demodulated in block reception and demodulation 27, which is connected with the second switch 28, which when in position accepts pulse packet containing data packets. With this purpose, the original sequence is restored to the node 29, and the detection and correction of errors is carried out in the node, a forward error correction PIO 30, from which the received data packets are received in the second buffer 31, which is stored for further processing. After the mobile station will transmit the request to the channel in the package RAP information about what it is "simple" station, it waits for the handshake request to the switch 28 is in position D. similarly, the switch is in position D, when the mobile station waits for messages on official channels (time slots). The message of the RAP contains details is vrabatyvaetsja error correction in the second node error correction PIO 32, from which the message is passed to the interpreter RAP 33, which preferably is a detector that reads the received message, and identifies, whether it contained information on the reservation channel. The interpreter RAP 33 controls the buffer 20 from the transmitter and the arrival of the signal on the reservation channel, the mobile station begins to transmit data from the buffer 20 in its allocated time segment. The interpreter RAP 33 is part of the controller KMD. In Fig.4 also shows the site for the formation of automatic retransmission request (APL) 34 for transmission and processing of the request received in the received bundle of impulses, automatic retransmission. Node APL 34 is used as additional equipment depending on the Protocol of the service package and is not significant for the implementation of the present invention.

The following variant of the base station BS in accordance with the invention is described with reference to Fig.5. The transmitter has a buffer 40, which stores data intended for transmission. The buffer 40 is connected to the driver swap package (PP) 41. Shaper PP is used to inform the mobile station about the package, which goldensilver MS, which transmits the data for transmission to the mobile station PS. Packets from the server MS is pumped into the buffer 40 of the base station BS (or base stations SBS). Once the data have been deposited in the buffer 40, the latter sends a control signal to the first driver PP 41, which generates a paging message packet for transmission to the mobile station. Message paging packet PP is a coded error (or convolution encoded) PIO node coding errors 42 which is transmitted to the switch 43. The data is transmitted to the switch 43 also from buffer 40 from which the packets destined for transmission is encoded for error correction in the second node encoding 44 and then passed to the interleaver 45, in which the data is interleaved for transmission. The switch 43 is in the position E in the transmission of data packets and in position F when sending paging packet PP. On the one side of the switch 43, the data is transmitted to the modulator-transmitter 46, in which the data is modulated and transmitted in the form of a pulse packet on the air. When establishing a virtual connection (under logon, SIMPSON (Fig.3)) the mobile station informs the MSS server that this is ente. Thus, the MSS server knows that it should forward packets only to the appropriate channels, and it reports the corresponding time segments of the base station BS or the system base station SBS, so the operator last knew that he must transmit the paging message package PP in this time segment that the mobile station can receive. After the message is a paging packet PP was transferred to the mobile station PS, the base station SBS may, at the agreed time to transmit data to a mobile station according to the agreed channel (in other words, for a specified frequency and at the agreed time bucket).

In the receiving part of the system information packet is received and demodulated in the receiver-demodulator 47, which is connected with the second switch 48, which when in the position of G takes the pulse packet containing data packets, the node 49 is restored to the initial sequence of pulses, and errors are identified and corrected in the node error correction 50. From node 50 of the received data packets is transmitted in a different buffer 51 for storage and further processing. When the base station expects mobile station PS packet random access is received messages errors are identified and corrected in the second node, a forward error correction PIO 52, from which the data is transmitted to a processor 53, which can also issue a request for automatic retransmission (APL) on request retransmission in the accepted packet. Function 53 ARO is optional: it depends on the used Protocol service package and is not required to implement the present invention. The CPU 53 controls the buffer 40 and transmits the information to the MSS server, and when receiving a request for TTD channel, the base station BS provides the agreed time segments handshake request packet RAP. The base station SBS transmits the information to the redundant downlink channel swap package PP. The base station SBS receives the transmitted data packet for transmission to the server MS, and further in a telecommunication network, such as the Internet.

The next version of the MSS server according to the present invention is described with reference to Fig.6. Incoming data from the fixed data communication network 59, for example from the Internet, to the server MSS processed in the data processor 60 and stored in the buffer 61. The data processor 60 requests the service processor 62, where to send the package, and the service processor 62 scans the directory address 63, which can be you the ket must be submitted on the given mobile station PS. The service processor 62 transmits information about the temporary segment to the data processor 60, which transmits a data packet transmitted from the buffer 61 to the base station BS, in the right channel and enters the information on the temporary segment in which data must be transferred to the mobile station over the air.

The present invention reduces the risk of overlapping signals in the network connection or even eliminates this phenomenon, which is especially important for mobile communication systems and full-duplex communication with a separation of time in which messages are transmitted in the ascending line in the same time bucket and down the line in a different time segment independent from each other. In the above-described communication system of the invention facilitates the use of the mobile station containing a single transceiver, and the risk of signal interference is minimized or non-existent.

The above-described variants of the invention with examples of a method, device and environment for the operation of the device. For the person skilled in the art it is obvious that the invention is not limited to the above-mentioned options and can also be implemented in another form without leaving the scope of the invention. Pre the way opportunities for implementation and use of the invention is limited only by the relevant claims. Thus, can be used different ways to implement the invention without leaving the scope of this invention.

1. The way to resolve overlapping messages in a telecommunication network for two-way communication with time division multiplexing, in which in the first direction of the communication, transmit the message on the first channel from the mobile station to the base station in the second opposite direction of the communication, transmit the message on the second channel from the base station at the mobile station, the first and second channels for the mobile station post base station, and at least one channel, authorized for use by the mobile station as the first channel, reported by the mobile station, characterized in that when a message is received by the base station from the mobile station, said first channel, used in the first link direction, find the base station by detecting the identification code of the mobile station from the message received from the mobile station, for the specified second channel, based on the specified detection, the base is the first channel, and the selected second channel reported by the mobile station.

2. The method according to p. 1, characterized in that at least one channel, authorized for use by the mobile station as the first channel, according to the mobile station by the message in the second channel what channel should be used as the first channel.

3. The method according to p. 1 or 2, characterized in that the communication between the base station and multiple mobile stations, to update the register of channels in the first and second directions of communication for each individual mobile station.

4. The method according to p. 1, characterized in that the mobile station informs the telecommunications network of the communication capabilities of the mobile station.

5. The method according to p. 1, characterized in that the first and second channels contain one time segment.

6. The method according to p. 1, characterized in that the first and second channels contain multiple time segments.

7. The method according to p. 1, characterized in that the number of time segments of the first channel is different from the number of temporal segments of the second channel.

8. Mobile station for two-way communication with time division channels to the base station Vova station, mobile station, in the second opposite direction of the communication, transmit the message on the second channel from the mobile station to the base station, and the first and second channels are placed in the specified network, and the mobile station includes a tool for communication in the first direction of communication in the first channel and the means of communication in the second direction of communication in the second channel, characterized in that it further comprises means (21) for informing the telecommunication network of the communication capabilities of the mobile station for providing network information about that the mobile station is capable of communication on the first channel and the second channel only in different time periods or capable of communication on the first channel and the second channel at the same time.

9. The mobile station under item 8, characterized in that the first and second channels contain at least one time segment.

10. The mobile station under item 9, characterized in that the means (21) informs the base station about the number of time segments required for the channel.

11. Two-way communication device with a time division channels to the mobile station in a telecommunication network, in which in the first direction of the communication before the communication is passed the message on the second channel from the base station at the mobile station, moreover, the first and second channels for the mobile station is placed in the specified network, the specified device contains a means for communication in the first direction of communication in the first channel, the means of communication in the second direction of communication in the second channel, and means (41, 62) for the message at least one authorized channel intended for use by the mobile station as the first channel, characterized in that it further comprises means (53, 60) for detecting the specified first channel used in the first link direction, by detecting an identification code of the mobile station from the message, received from the mobile station, means (41, 62, 63) for selection to the specified second channel, based on the specified detection, for the second direction of communication, such a channel, a time segment which will not block time segment specified by the first channel, and means (41, 62, 63) of the second channel of the mobile station.

12. The device according to p. 11, characterized in that it is the base station.

13. The device according to p. 11, characterized in that it is the system base station containing at least one base station and one controller base the ion network.

15. The device according to p. 11, characterized in that the first and second channels contain at least one time segment.

16. Telecommunications network containing the support node, base station and mobile station of the mobile network, and to implement two-way communication with time division channels specified telecommunications network includes a means for communication over a telecommunications network in the first link direction in the first channel, a means for communication over a telecommunications network in the second direction of communication in the second channel, means (62, 63) for distribution of the first and second channels for the mobile station, and means (41, 62) to exchange messages with at least one authorized channel, intended for use by the mobile station as the first channel, characterized in that it further comprises means (53, 60) for detecting the specified first channel used in the first link direction by detecting the identification code of the mobile station from the message received from the mobile station, means (21, 33) for selection to the specified second channel, based on the specified detection, for the second direction of communication of such a channel, the time to exchange messages on the second channel with the mobile station.

17. Network p. 16, wherein the first and second channels contain at least one time segment.

 

Same patents:

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The invention relates to communication technology and can be used in data networks

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The invention relates to a communication device with multiple access with a temporary seal (MTLD), in particular to the communication device for demodulating and signal processing MTLD with varying time intervals

FIELD: mobile radio communications engineering.

SUBSTANCE: mobile station may provide to communication networks markings of power class, based on multiple slots, to set up radio communication line for receiving communication services. Aforementioned marking may be connected to power level of mobile station and number of slots, appropriate for given power level. On basis of aforementioned marking mobile station may realize communication with communication network along radio communication line.

EFFECT: optimized resources, accessible by mobile stations.

3 cl, 5 dwg

FIELD: communications engineering, possible use in data transmission systems with multi-access and time division of channels.

SUBSTANCE: device contains transmitting parts of client stations, receiving part of central station, where each transmitting part of client station contains generator of clock impulse (1), timer (2), information source (3), generator of information signal (4), block for generating sub-streams (5), first and second channels for generating quartile-encoded signals (6.1-6.2), adder (7), modulator (8), transmitter (9), transmitting antenna (10), frequency synthesizer (11) and generator of pseudo-random numbers (12), and receiving part of central station contains demodulator (14), signal selector (15), block for selecting additional series (16), first and second channels for processing quartile-encoded signals (17.1-17.2), combining device (18), frequency synthesizer (19), generator of pseudo-random numbers (20).

EFFECT: increased traffic capacity.

4 cl, 11 dwg, 1 tbl

FIELD: physics; communications.

SUBSTANCE: proposed invention relates to communication systems. During operation, wireless communication frames are divided into several sub-frames. Data are transmitted in wireless communication frames in several sub-frames, and having frame duration selected from two or more possible frame durations.

EFFECT: reduced delay and service data for signal transmission in forward and reverse directions in a communication system.

7 cl, 24 dwg, 5 tbl

FIELD: information technologies.

SUBSTANCE: transmitter processes, codes, alternates and breaks unit of data to produce multiple outlet units. For each outlet signal transmitter generates multiple packet signals, having training sequence, which is jointly used by these packet signals. Transmitter sends multiple packet signals for each outlet unit in multiple time intervals, for instance time intervals that follow each other in single frame. Multiple packet signals for each outlet unit may include one or several short training sequences, lower protective intervals between neighboring packet signals, include the first field of end bits arranged in the beginning of the first packet signal, and the second field of end bits arranged in the end of the last packet signal, include at least one field of stealing flag or have certain combination of abovementioned factors.

EFFECT: improved efficiency of data transfer and training sequence with application of new formats of time intervals and units.

39 cl, 19 dwg

FIELD: information technology.

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EFFECT: high quality of the transmitted signal.

24 cl, 10 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method includes setting up a single time scale in the system and associating slots with exact universal time and reducing guard intervals in each slot; designing equipment based on principles of digital signal processing and program execution of basic functions in system nodes; facilitating modernisation of system equipment, for example, introducing new modulation, coding and interleaving modes and other functions by computer reprogramming.

EFFECT: facilitating two-way communication between each of a user station and a central station and through the central station with information recipients, high reliability and rate of transmitting data.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of increasing the information transmission speed at time-pulse modulation is accomplished by simultaneous operation of one broadband radio transmitting device by two or more channels with pseudo-random time-pulse modulation. At the reception at one time interval in a single channel, reception is conducted at one frequency, and on the second channel - at the other one.

EFFECT: increasing the information transmission speed with pseudo-random time-pulse modulation.

2 dwg

FIELD: radio communications.

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EFFECT: reduced mass and size of transceiver stations, enhanced noise immunity and electromagnetic safety of personnel.

1 cl, 7 dwg, 1 tbl

FIELD: radio communications.

SUBSTANCE: proposed method intended for data transfer from mobile object to stationary one residing at initial center of common mobile-object route using electronic means disposed on stationary and mobile objects involves radio communications with aid of low-power intermediate transceiving stations equipped with non-directional antennas and dropped from mobile object, these intermediate transceiving drop stations being produced in advance on mobile object. Proposed radio communication system is characterized in reduced space requirement which enhanced its effectiveness in joint functioning with several other radio communication systems.

EFFECT: reduced mass and size of transceiver stations, enhanced noise immunity and electromagnetic safety of personnel.

2 cl, 6 dwg

FIELD: radio communications.

SUBSTANCE: proposed method intended for data transfer to mobile object from stationary one residing at initial center of mobile-object route using electronic means disposed on stationary and mobile objects involves radio communications with aid of low-power intermediate transceiving stations equipped with non-directional antennas and dropped from mobile object, these intermediate transceiving drop stations being produced in advance on mobile object. Proposed radio communication system is characterized in reduced space requirement which enhances its effectiveness in joint functioning with several other radio communication systems.

EFFECT: reduced mass and size of transceiver stations, enhanced noise immunity and electromagnetic safety of personnel.

2 cl, 6 dwg, 1 tbl

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