Method to perform procedure of random access by radio interface

FIELD: information technologies.

SUBSTANCE: invention relates to method to perform procedure of random access by radio interface (106), for instance, between mobile terminal (102) and base radio station (104) of mobile network (108). Aspect of method, according to the invention, includes stages, at which a request of synchronisation (112) is sent for information of synchronisation; synchronisation information (114) is received in response to request of synchronisation; and request (116) of resources for resources of data transfer is sent on the basis of at least one parametre of transfer corrected in compliance with information of synchronisation.

EFFECT: improved accuracy of synchronisation.

18 cl, 8 dwg

 

The technical field to which the invention relates

The present invention, in General, refers to the radio wireless networks and, in particular, to mobile radio networks. More specifically the invention relates to a method of performing random access procedure on the radio interface.

The level of technology

Today, not only mobile phones, but also other mobile terminals such as PDA (personal digital devices, laptops, etc. that communicate with wireless networks on the radio. Typical base radio network serving the mobile terminal through the routing data received from the terminal via the network to the receiver through the transmission data received from the network over the radio interface to the mobile terminal.

Available transmission resources, such as frequency (bandwidth), time (time intervals available in frames) and transmit power, in General, limited, and therefore should be used as efficiently as possible. In this regard, the base station manages not only the resource settings for transmission over a downlink (from base station to the terminal), but also for transmission over the uplink communication (from terminal to base station). For uplink communication base article is NTIA should make sure, that the mobile terminal is synchronized with the scheme of transfer of the radio interface with a corresponding accuracy. With this purpose, the base station analyzes the received signal uplink connection, retrieves the corresponding values of the adjustment of the transmission parameters in the ascending line of communication used by the terminal, and sends the timing information indicating the necessary adjustments, to the mobile terminal, which then must adjust their transmission parameters accordingly. The synchronization information may include (for one or more transmission parameters) or the value of the parameter transfer or correction value for correcting the transmission parameter accordingly.

While synchronizing the mobile terminal can be performed by direct method in the case of an existing connection in the ascending line of communication, in which signals from the terminal is always taken and analyzed at the base station, such an analysis is impossible if the terminal wants to connect the first time (for example, when the power is turned on or during transfer service), or from the waiting state (in which the terminal is only listening on the descending line). In these cases, the random access procedure must be performed to t the th, in order to achieve synchronization.

The random access procedure also serves several purposes. For example, the terminal is required (at least temporary) identification data that must be adresem by the base station. In addition, the terminal must provide certain information to the base station could decide to grant access to the network. Additionally, there must occur an exchange of certain information regarding the required resources ascending/descending line.

Any allocation of resources, such as resource allocation for the random access procedure based on the transmission scheme used on air. Direct selection scheme may include receiving almost not changing the way a particular channel, which can be defined through specific orthogonal resources such as time(s) interval(s) and band(s) of frequencies, which can then be used by the terminal for transmission on the uplink communication. However, the reserved resources are then blocked for use by other terminals, which means that resources are lost when the mobile terminal does not use a reserved channel in full (for example, because the transmit buffer at the moment is empty). On the other side is s, the reserved resources may not be sufficient to ensure fast data transfer if the transmit buffer is empty. As an additional disadvantage of this direct selection scheme is limited by dimensions, i.e. only a specific number of users (defined by the available orthogonal resources) can be maintained.

During this procedure, the random access transmission parameters for uplink communication, such as time, frequency and power, inaccurately combined with the scheme of transfer, determined by a base station. Therefore, in the orthogonal scheme should be provided additional resources for random access, to avoid interference from usually nesovmestny packet random access synchronized with the usual packages, for example, are transmitted in adjacent time intervals. These additional resources include, for example, protective intervals and shelterbelts in the time and frequency dimension, respectively.

In other transfer scheme, known, for example, of systems WCDMA (wideband multiple access code division multiple access), channel uplink communication provided to the terminal based on orthogonal resources, i.e. the terminal may send its data using random in the temporal interval and/or frequency bands. Although this system is not limited by dimensions, cross-user interference increase with the number of simultaneously sending terminal, which reduces performance, and hence the throughput. In addition, fast power control is required in order to accurately control the transmit power of each terminal.

Thus, there is a need for effective resource of the random access procedure, which allows at least some of the disadvantages set forth above.

The invention

According to the first aspect of the invention proposes a method of performing random access procedure on air. The method comprises the steps of transmitting a synchronization request for synchronization information; receiving the synchronization information in response to the synchronization request; and transmitting, at least on the basis of one transmission parameter adjusted (for example, specified or modified in accordance with the synchronization information, resource requests for resource data.

The radio interface may be a radio interface of a mobile network, for example GSM (global system for mobile communication) or UMTS (universal mobile telecommunications system). The method can be performed in the mobile terminal requesting access to a base station of the wire the same network, serving the radio interface, or any other device during the random access procedure.

The stages of transmission of the synchronization request and receive data synchronization can be performed using the invention, to achieve an exact character-by-character synchronization between the mobile terminal and the base station, i.e. any transfer terminal within a specific time frame must fit within the corresponding time interval in the base station so that none of the transmitted symbols did not exceed the time interval of the base station.

The synchronization request may be submitted with package access, which is formed so as to enable the base station to analyze, for example, on the basis of frequency band and time period occupied by the package access, alignment, transmission from the terminal with the scheme of transfer provided by the base station. In addition, the base station may be permitted to provide value (adjustments) in the synchronization information in the mobile terminal.

The synchronization request may carry only a limited amount of information, which is required for synchronization of the mobile terminal with the base station. For example, temporary or arbitrary identifier of the terminal, which is specifically suitable for stages synchro is Itachi, may be provided. Because, for example, the identifier can be used only for synchronization, it may contain only a small number of bits. On the other hand, information associated with the access network or the requested resources can be omitted in the synchronization request.

The mobile terminal can adjust its transmission parameters according to the received synchronization information. Therefore, the request for resources may be transmitted using a conventional package with the exact character-by-character alignment on air. The request for resources may indicate the resources required for the exchange of user and/or control data. As an example, the updated location of the mobile terminal may request the appointment of a dedicated control channel. As another example, for transmission of user data (for example, application data), the terminal may request the allocation of a data channel with a specific bandwidth (for example, streaming data), or may request the allocation of resources for transmission of specific data.

In one embodiment of the invention, the method may include the additional steps of receiving information resources in response to the request for resources and data using resources in accordance with the information resources. The base station is I can provide additional control information along with information resources in the mobile terminal, for example, a temporary identifier, which can replace the identifier used during the stages of synchronization, and may contain, for example, a larger number of bits.

The method may include the step of transmitting, if additional data must be transferred at least one additional resource requests. Preliminary synchronization may not be required in this case.

In one implementation of the invention, the method includes a step of starting a timer synchronization in response to at least one of: receiving information synchronization or data transfer. Synchronization between the terminal and the base station can often be kept up until the terminal sends the data, because then the base station may analyze the received signals. If no data is transmitted, the synchronization may disappear within a specific period of time. Thus, the synchronization timer can be set appropriately to ensure a predetermined level of synchronization.

The expiration time of the synchronization timer can be set according to the predictive validity of the information synchronization. For example, the expiration time may be set according to the tolerances associated with the electronic circuit in the mobile terminal and the base station. In one variant of the invention, the time synchronization timer can be set according to the measured relative speed. For example, if the mobile terminal moves at high speed relative to the base station, the expiration time may be set to a short value. The expiration time of the timer synchronization may also be based on predicting changes in cell terminal, which requires synchronization with the new base station.

The method may include transmitting an additional request synchronization after synchronization timer. In this embodiment, the expiration time may take into account any loss of synchronization.

In some implementations of the invention the method comprises an additional step of transmitting the PING signal (signal check the availability of the recipient by transmitting a special signal, i.e., query response and waiting) to maintain synchronization. The PING signal may contain empty or false operational data, but can also contain data alarm (service signals)that have been deliberately stored in the transmit buffer for transmission using the PING signal. The PING signal may be sent before synchronization is lost, so that the signal could use a regular (permanent) resource transfer, and provides a resource efficient way that sync is still on air. If signalling data (service signals) must not be before the us, the PING signal may contain the smallest possible amount of data (in order not to waste resources on the radio interface).

The PING signal may be transmitted after the synchronization timer. In this case, the expiration time may be set to a value smaller values of extinction synchronization. Additionally or alternatively, the PING signal may be transmitted in response to the polling request received over the radio interface. The base station may be configured to send periodically or as needed - a pull request for the initiation of signal transmission from the mobile terminal.

According to the second aspect of the invention proposes a method of performing random access procedure for a radio interface, the method includes the steps of receiving a synchronization request for synchronization information; transmitting a query-based synchronization the synchronization information; and receiving, based on at least one transmission parameter adjusted according to the synchronization information, resource requests for resource data.

The method can be performed in a base station serving the air. For example, the base station may be a BTS (base transceiver transmitting station) or BSC (center of base stations) of the base station subsystem in a GSM network or a base is tanzia may be a node B or RAN controller in the UMTS network.

The synchronization request may be transmitted over the radio interface by the mobile terminal. The base station may analyze the received synchronization request (which may be represented by packet access) in order to calculate at least one correction value of the transmission parameter, thereby to determine timing information for the alignment of the transmission mobile terminal with the scheme of transfer, provided by a base station. Based on the information synchronization, the terminal may adjust one or more of its transmission parameters and can then pass on the basis of the adjusted parameter(s) of the transmission request resources.

The base station may further perform the steps of transmitting information resources in response to the request for resources; and scheduling resources according to the information resources. In one implementation of the invention, the method comprises the step of accepting at least one additional resource requests for additional data. Until the mobile terminal and the base station are synchronized with each other, the repetition of the initial stages of synchronization is not required.

In one embodiment of the invention the method comprises a step of starting a timer synchronization in response to at least one of: receiving the request, the synchronization receiving resource requests or receive data. The timer value may be preset or may be set according to the information included in the received synchronization request. This implementation may further comprise the step of transmitting at the expiration of the timer synchronization request signal PING. In this case, the expiration time of the timer can be set so that the synchronization is preferably remains sufficiently accurate, and the PING signal may be sent in a plain package transfer. Additionally or alternatively, the base station may determine whether the request PING signal to be transmitted based on the analysis of normal traffic uplink connection.

According to an additional aspect of the invention features a computer software product, which contains part of the code to perform the steps of any of the aspects of the method of the invention described herein when the computer program product is executed on one or more computing devices, for example in a mobile terminal or a base station of a wireless network. The computer software product may be stored on a machine-readable recording medium such as a hard disk drive, storage device, CD-ROM or DVD. Additional or alternative computer software is the first product may be provided for download via the download server. The boot can be performed, for example, via the Internet.

According to an additional aspect of the invention provides a mobile terminal that is configured to perform the random access procedure on air. The device contains a component of the synchronization request made with the possibility of transmission of the synchronization request for synchronization information; the answers synchronization performed by the data reception synchronization, associative associated with the synchronization request; and component control transmission performed by the transmission based on at least one transmission parameter adjusted according to the synchronization information, resource requests for resource data.

According to another additional aspect of the invention features a base station that is configured to perform the random access procedure for a radio interface. The base station contains a component of the synchronization request made with the possibility of receiving a synchronization request for synchronization information; the answers synchronization performed with the opportunity to transfer on the basis of the synchronization request, the synchronization information; and a component resource requests made with the possibility of reception on the basis of, what about the least one transmission parameter adjusted according to the synchronization information, resource requests for resource data. Component synchronization queries can contain sub-component, configured to calculate, on the basis of the received synchronization request, at least one value adjustment of transmission parameters.

Brief description of drawings

Hereinafter the invention is described in detail with reference to exemplary embodiments of implementation, illustrated in the drawings, in which:

figure 1 - schematic illustration of a variant of implementation of the communication system;

figure 2 - functional block diagram schematically illustrating an implementation option of the mobile terminal;

figure 3 - functional block diagram schematically illustrating an implementation option a base station;

4 is a block diagram of a sequence of operations, schematically illustrating the steps of a variant of the method of performing random access procedure in a mobile terminal;

5 is a block diagram of a sequence of operations, schematically illustrating a variant of the method of providing channel with random access to the radio interface to the base station;

figa, 6B schematically illustrate the first and second variant implementation of the schema data;

7 CX who may be put at risk illustrates the sequence of transmissions between the mobile terminal and the base station.

A detailed description of the preferred embodiments

In the following description for purposes of explanation and not limitation, outlines specific details such as specific types of networks, including specific network nodes, communication protocols, etc. to provide a complete understanding of the present invention. Specialists in the art should be obvious that in this technical field the present invention can be used in practice in other variants of implementation that depart from these specific details. For example, specialists in the art should note that the present invention can be used in practice, wireless network different from the mobile network are described below to illustrate the present invention. Instead, the invention can be used in practice with any wireless network, in which the random access procedure is performed on air. It may include, for example, HIPERLAN network (HIPERLAN is a standard for wireless local area networks).

Specialists in this field of technology should take into account that the functions described below may be implemented using individual hardware, using software programs is to be placed, functioning together with a programmed microprocessor or General purpose computer, using specialized integrated circuit (ASIC) and/or using one or more digital signal processors (DSP). You should also take into account that when the present invention is described as a method, it can also be implemented in a computer processor and a memory device connected to the processor, while the memory device is encoded with one or more programs that perform the methods disclosed in this document, when enforced by the processor.

1 schematically illustrates a variant of the implementation of the system 100 connection that includes the mobile terminal 102 and base station 104 that can communicate over the air interface 106. The base station 104 belongs to the mobile network 108.

To establish a connection for data communication, the mobile terminal 102 must be accessed via a base station 104 to the network 108. The random access procedure must be performed to synchronize the terminal with the scheme of transfer of the radio interface 106 and to provide resources to the terminal (and possibly other purposes). As a preparatory step, the terminal 102 listens to the control channel of the descending line is communication (DCCH) 110, which is transmitted in broadcast mode by the base station 104 in the accepted radiate. DCCH may report, for example, the cell ID and network ID, the configuration of the channels associated with the used transmission scheme associated with the random access information and parameters to establish the connection.

On the basis of transmitted in the broadcast mode information of the mobile terminal 102 then performs a random access procedure. The procedure involves the transfer of the package 112 access, representing a synchronization request for synchronization information. The base station 104 analyzes the package 112 access, determines the setting or adjustment of the transmission parameters, in order to combine the transmission terminal 102 with the scheme of transfer on the radio interface 106, and sends timing information, which includes the appropriate settings or values of the adjustment of transmission parameters in response 114 synchronization, the terminal 102.

The mobile terminal 102 extracts the settings or values of the adjustment of the transmission parameters in response 114 synchronization and sets or adjusts its transmission parameters accordingly. Based on the new parameters of the transmission terminal 102 then passes the request 116 resources, specify the requested transmission resources. Next, the base station 104 may PR is to deliver appropriate resources for communication (upward communication line, downward communication line) interface 106 in the mobile terminal 102.

Figure 2 schematically illustrates functional building blocks of a variant of implementation of the mobile terminal 200, which is configured to perform the random access procedure on the radio interface 202. The terminal 200 may be the realization of the terminal 102 in figure 1.

The terminal 200 includes the component 204 transmission control, which is arranged to control transmission by the antenna 206 interface 202. The terminal 200 further comprises a component 208 requests synchronization, which is made with the possibility of transmission of the synchronization request for synchronization information. Component 208 is the request and provides it to the component 204 transmission control, which then controls the transmission of the packet access accordingly.

The terminal 200 further comprises a component 210 responses synchronization, which is configured to receive the synchronization information in response to the synchronization request. Component 210 receives a synchronization request from the radio interface 202, extracts timing information and provides an indication of the adjusted parameters of the transmission component 204 transmission control, which controls the subsequent transfer properly.

Component 212 of the request to the Republic of the owls prepares the request for resources for resources data for data transmission on the radio interface 202. The request for resources is provided in component 204 transmission control, which is configured to send the request according to the adjusted transfer scheme, i.e. on the basis of at least one transmission parameter adjusted according to the synchronization interface 202.

Figure 3 schematically illustrates functional building blocks of a variant of implementation of the base station 300, which is configured to perform the random access procedure on the radio interface 302. The base station may be the implementation of the base station 104 in figure 1.

The base station includes an antenna 304 for receiving the data transmission over the radio interface 302. The base station 300 further comprises component 306 admission control, which may include, for example, filters for separating different transmission channels in the ascending line of communication provided for radio interface 302. The base station 300 further comprises a component 308 requests synchronization, which is made with the possibility of receiving a synchronization request for synchronization information. Component 308 analyzes the received service access and identifies discrepancies with the scheme of transfer, provided by base station 300 to the radio interface 302. For example, a component 308 can determine the value of the temporary advance, required for proper alignment of the synchronization circuit of the transmitting mobile terminal with the scheme time slots supported by the base station 300. Another example of such differences is the frequency shift, which should be adjusted for proper alignment of the transmission patterns of the mobile terminal with the scheme of transfer supported by the base station 300.

Component 308 requests synchronization provides an indication of the adjustment of the transmission parameters in the component 310 answers synchronization, which prepares the response synchronization, which includes timing information indicating the adjustment of the transmission parameters. Component 310 answers synchronization may be a subcomponent of the component transmission control (not shown) of a base station 300, which, in General, controls the transmission of a base station interface 302.

The base station 300 further comprises a component 312 dispatching resources, which is made capable of receiving, based on at least one transmission parameter adjusted according to the synchronization information, resource requests for resource data. One or more specific channels of upward communication line may be provided in the transfer scheme, supported through the base station 300, to send resource requests. Component 312 can then determine the appropriate transmission resources and initiates the transmission of the indication resources provided to the requesting mobile terminal.

Figure 4 schematically illustrates a variant of the method 400 of performing the random access procedure on the radio interface, which, for example, can be performed in the mobile terminal 102 in Fig. 1 or the mobile terminal 200 of figure 2.

The method is initiated at step 402, for example, by a control signal that indicates that the random access procedure must be performed in order to exchange data over the radio interface. At step 404 is transmitted to the synchronization request for synchronization information. At step 406, the synchronization information is received in response to the synchronization request. At step 408 based on the at least one transmission parameter adjusted in accordance with the synchronization information is transferred to the resource requests for resource data. Query-based resources information resources can be accepted (not shown), and data can be transmitted using a resource in accordance with the information resources. If additional data needs to be transferred (step 410), additional resource requests are transmitted. If the data is no longer on what should be transferred, the method ends at step 412 with the transition of the mobile terminal, for example, in the idle state.

Figure 5 illustrates a variant of the method 500 of performing the random access procedure on the radio interface, which, for example, can be performed in a base station, such as base station 104 of figure 1 or the base station 300 in figure 3.

The method begins at step 502 with receiving a synchronization request for synchronization information. Based on the received request, at least, can be calculated one correction value of the transmission parameter. At step 504, the synchronization information is transmitted on the basis of the synchronization request. At step 506, the accepted request for resources for resources for the data transmission based on at least one transmission parameter adjusted according to the synchronization information. In response to the request for resources information resources can be transferred (not shown), and resources can be dispatched in a base station according to the information resources. At step 508 and any additional subsequent stages additional resource requests can be accepted for additional data. At step 510 the method completes.

Figa illustrates an implementation option channel 600 random access time going to the right, and frequency, going the th up. Packages 602 access is transmitted during time intervals 604. Each package 602 may provide the synchronization request. Because synchronization packets 602 access not exactly aligned with the synchronization time intervals 604 of the base station serving the air, guard spaces shall be provided within each time interval 604 access. As a result, the resources of time reserved for channel 600 random access is used at a lower frequency.

Figv illustrates an implementation option scheme 610 transmission in which packets 612 transmission fits intervals 614. Time intervals 614 may be allocated to the transmission of user or control data. As an example, time intervals, denoted as 1, 2 and 3 may be allocated to the transmission of the three mobile terminals. The transmission parameters of each of the mobile terminals fits, therefore, requires only a small protective intervals. On the contrary, the packet transfer, transferring data transmission, can fill the time slots to a considerable extent so that the available transmission resources are effectively used.

Figa and 6B illustrate the inefficient and efficient use of resources-time interface without and with proper alignment. Anal is the same relationships are supported for other resources, such as frequency and transmit power.

7 schematically illustrates the data exchange between the mobile terminal 702 and the base station 704 in an exemplary embodiment. At step 706, the synchronization request is sent by a terminal 702 to the base station 704 requesting adjustment values of the transmission parameters. Because the package uses transmission resources with low efficiency (see figa), the information included in the synchronization request is limited to a minimum. For example, transmission resources are not requested in the synchronization request. In response to a synchronization request to the network, i.e. the base station 704 and/or other control node of the access network, the packet is parsed access that carry the synchronization request, to determine the adjustment of the transmission parameters. These adjustments are provided as synchronization information to the terminal 702.

At step 708, the request for resources is sent from the mobile terminal 702 to the base station 704. The query may include, for example, information concerning the identity of the terminal, the amount of data and/or bandwidth, the priority assigned to the data (if any), the number of available transmit power, and additional information associated with the requested data transfer for uplink communications. The request for resources re the W by using the transmission parameters, which is set in accordance with the synchronization information, adopted from the base station 704; therefore, transmission resources are used effectively (see figv). At step 710 additional data is transmitted using the dispatched resources.

Complete the random access procedure performed until a connection terminal 702 may contain at least step 706 synchronization and phase 708 resource allocation. If additional data needs to be transmitted, the terminal 702 may transmit at step 712 additional resource requests that can be answered by the base station 704 with the additional provision of resources in the uplink communication. It is assumed that at this time the upward communication line is still synchronized, thus the repetition of step 706 may be omitted. Additional data can be transferred at step 714.

The upward communication line, as a rule, remains synchronized as long as the terminal transmits data in uplink communication, because the base station is typically analyzes the received signals and determines the values of the adjustment of the transmission parameters. Updated correction parameters then can be provided in the terminal. This procedure cannot be performed if the terminal stun the Il data transmission in uplink communication. Accordingly, after a certain period of time, the transmission parameters are no longer valid, i.e. synchronization disappeared.

The timer mechanism may be used in one or both elements of the mobile terminal and the base station. This mechanism provides an indication related to the permissibility of the transmission parameters of the upward communication line used by the mobile terminal. As an example, the timer can be (re)launched in that case, if the terminal has just launched an update of its transmission parameters, or if the terminal has transmitted the data uplink communication. In one embodiment, upon expiration of timer transmission parameters in uplink communications are considered obsolete, and (re) synchronization is required prior to any (further) data transfers. The timer value can be either set to a fixed value or may be configurable by the network (base station) or via terminal. For example, the timer value may depend on the speed of the terminal relative to the base station. A smaller value of the timer can be used if the terminal moves at high speed.

In an alternative embodiment, which is illustrated in Fig.7, the timer is set to expire, which has expired is no likely before as synchronization between the terminal 702 and the base station 704 disappeared. In this configuration, some random signal can be transmitted to the base station, which must only satisfy the requirement that the base station can analyze the synchronization state. For example, this query can be used the PING mechanism. The terminal sends a PING signal (step 716), which (similar to a PING mechanism, known in the technical field of the Internet) transfers the empty operating data or false operational data and serves only the purpose to provide a basis for measuring synchronization of the uplink communication. The PING signal may be used if no other data should be transmitted in uplink communication. If some non-critical data must be transmitted in uplink communication, the transmission of this data may be delayed up until the PING signal should not be sent; in this case, the PING signal may carry non-critical data instead of an empty or false work data. As an example, the PING signal may be used for transportation reports the quality of the channel.

The PING signal may be transmitted at regular intervals up until the other data are not available for transmission in the uplink communication. The PING interval can be precisely konfigurirovanii network and/or terminal, but it can also be configured according to the state of the terminal. For example, the PING signal may be sent with a high frequency if the terminal moves at a high speed. The estimation of the speed of the terminal may be based on measurements of network and/or terminal, or may be based on the amount of value adjustments synchronization provided in the downlink.

If signalling data (service signals) or user data is not dispatched for transmission during a particular time period which can be predetermined, the terminal may stop the PING procedure (step 718 7) so that the upward communication line went out of sync after some time.

In one embodiment, the implementation of signaling PING through the mobile terminal can be controlled through the network. For example, the base station may use the mechanism of explicit polling, in order to initiate the transfer of data, for example the false data from the terminal in the proper time. One implementation of the scheme polling may include the dispatch of work data with zero size in the downlink, thereby forcing the terminal to respond to a feedback signal such as an ACK (acknowledgement) or NACK message (denial of admission). With nchronization pull requests can be defined as follows, as described above for the PING timer in the terminal. And the PING timer in the terminal and the timer polling on the network can be used in parallel.

The methodology proposed in this document, contains a division of the random access procedure, at least two parts, namely the first part, allowing the aspect of synchronization, and the second part, allowing the aspect to access to resources. It provides optimization of transmission schemes for each part separately. Once synchronization is achieved, additional synchronization request is not required as long as the terminal remains synchronized. Because the package access, representing the synchronization request, uses significant resources transfer, reducing the number of synchronizations according to the methodology proposed in this document, you may save significant resources for transmission in uplink communication. Resources provided in the radio interface for random access (for example, orthogonal channels with random access), can be used more efficiently. On the contrary, fewer resources may need to be reserved for random access. After a clean synchronization is achieved, any additional information, typically provided in the ascending line of communication during the random access procedure, satimage to be transferred from the efficient use of resources ascending line. Because synchronization and access to resources are divided, the terminal can easily be out of sync if there is no data available for transmission, using different resource efficient mechanisms; for example, the PING signal type can be used.

Although the present invention is described in connection with its preferred options for implementation, it should be understood that this disclosure is only for illustration purposes. Accordingly, the invention is limited only by the scope of the attached claims.

1. The method for performing a random access procedure on the radio interface, containing the following steps in the mobile terminal, on which:
transmit (404) a synchronization request for synchronization information;
accept (406) timing information in response to the synchronization request;
transmit (408) based on the at least one transmission parameter adjusted in accordance with the synchronization information, the request resource resources for data transmission; and
start the synchronization timer in response to receiving the synchronization information, and after the expiration of the timer synchronization request resynchronization prior to any data transfer.

2. The method according to claim 1, additionally containing phases in which
take the information resources in response to the query is resursov; and
transmit data using resources in accordance with the information resource.

3. The method according to claim 2, containing a stage, where the transmit (408), if additional data should be transferred (410)at least one additional resource requests.

4. The method according to claim 1, wherein the synchronization timer set according to the predicted validity of the information synchronization.

5. The method according to claim 1, wherein the synchronization timer set according to the measured moving speed of the mobile terminal.

6. The method according to any of claims 4 or 5, in which additional synchronization request is passed after synchronization timer.

7. The method according to claim 1 containing an additional stage on which to transmit at least one signal PING (716) to maintain synchronization.

8. The method according to claim 7, in which the PING signal contains alarm data.

9. The method according to claim 7, in which the PING signal is passed in response to the polling request received over the radio interface.

10. The method for performing a random access procedure on the radio interface, containing the following steps in a base station, on which:
accept (502) a synchronization request for synchronization information from the mobile terminal;
transmit (504) query-based synchronization timing information in the mobile terminal;
accept (506) on the basis of at least one transmission parameter adjusted in accordance with the synchronization information, the request resource resources for data transmission from the mobile terminal; and
take an additional synchronization request from the mobile terminal after the expiration of the synchronization timer in the mobile terminal, the synchronization timer trigger in response to receiving the synchronization information in the mobile terminal.

11. The method according to claim 10, further comprising stages, which
transmit information resources in response to the request for resources; and
dispatch resources according to the information resource.

12. The method according to claim 10 or 11, containing the stage at which accept (508), at least one additional resource requests.

13. The method according to claim 10, containing a stage, on which to run the synchronization timer in response to at least one of: receiving a synchronization request, receiving a request for resources or receive data.

14. The method according to item 13, containing a stage on which to transmit, upon expiration of the timer synchronization request signal PING.

15. The computer-readable storage medium containing software code that, when executed by a computer device, instruct the computer device to perform the method according to any one of claims 1 to 9.

16. The computer-readable storage medium containing software code that p and performing computing device, instruct the computer device to perform the method according to any of PP-14.

17. A mobile terminal configured to perform the random access procedure on the radio interface (106, 202), and the mobile terminal (102, 200) contains
component (208) sync requests made with the possibility of transmission of the synchronization request for synchronization information;
component (210) responses synchronization performed by the data reception synchronization in response to the synchronization request;
component (204) transmission control performed by the transmission based on at least one transmission parameter adjusted according to the synchronization information, resource requests for resource data; and
a component configured to start the timer synchronization in response to receiving the synchronization information, and after the expiration of the timer synchronization request resynchronization prior to any data transfer.

18. The base station is configured to perform the random access procedure on the radio interface and the base station (104, 300) contains
component (308) sync requests made with the possibility of receiving a synchronization request for synchronization information from the mobile terminal;
component (310) otveta the synchronization made with the possibility of transmission on the basis of the synchronization request to the synchronization information in the mobile terminal;
component (312) dispatching resource made with the possibility of reception on the basis of at least one transmission parameter adjusted according to the synchronization request resources resources for data transmission from the mobile terminal; and
the component is made with the possibility of receiving additional synchronization request from the mobile terminal after the expiration of the timer synchronization in a mobile device, the synchronization timer trigger in response to receiving the synchronization information in the mobile terminal.



 

Same patents:

FIELD: information technology.

SUBSTANCE: subscriber profile is created for specifying at least a frequency at which the content provisioning system is to download to the subscriber at least one list of content, in the preferred invention at least one list of songs, which is updated in accordance with at least one criterion. According to the disclosed method, at least one song list is downloaded to the terminal at a time specified in subscriber profile. Also described is a content provisioning system, a network server and a terminal which operate in accordance with the disclosed method.

EFFECT: automation of loading content.

100 cl, 9 dwg

FIELD: information technologies.

SUBSTANCE: method is proposed to provide information on direction related to mobile objects, including the following: periodical reception of identification information (ID) in mobile terminal from movable object by means of signal of radio frequency identification (RFID). Information on location related to ID information may be updated to give updated information on location for mobile object. Updating information on location may be stopped, when movable object is outside zone of RFID of mobile terminal, to save updated information on location as information on location on the last available location for movable object.

EFFECT: provision of information on direction related to mobile objects.

18 cl, 8 dwg

FIELD: information technologies.

SUBSTANCE: method uses double-level hash coding to assign a mobile station first to frequency range, and then to specific frequency in this frequency range. Versions of invention make it possible to assign weights to frequencies, and mobile stations may do has coding using weighted frequencies.

EFFECT: weighing makes it possible to do uneven distribution of mobile stations by frequencies for optimisation of working parametres of the system.

24 cl, 13 dwg

FIELD: information technologies.

SUBSTANCE: method and system are proposed to sign short messages, as well as device of short messages processing. Device of short messages processing receives short message of sender, extracts sender's number from received message, extracts signature of short message corresponding to number of sender from service data base in compliance with sender's number, adds extracted signature into short message and sends signed short message to receiver.

EFFECT: quick provision of valid information on sender.

20 cl, 11 dwg

FIELD: information technologies.

SUBSTANCE: in wireless communication device there is the first unit of communication for contactless communication with other device of wireless communication and reception of set data from other device of wireless communication, the second unit of communication, to establish wireless connection with other device of wireless communication, control unit - to set wireless connection between the second unit of communication and other device of wireless communication with application of set data received by the first unit of communication, and unit of data processing, to save set data before wireless connection is broken, within a specified period of time.

EFFECT: simplified process of establishment of repeated connection between wireless devices.

7 cl, 15 dwg

FIELD: information technologies.

SUBSTANCE: decentralised mode is configured for the first mobile station (MS), operating in decentralised network according to broadband wireless standard; detection of communication in decentralised mode, having simplified protocol of data transfer of broadband wireless standard; realisation of communication with the second MS using data transfer in decentralised mode, at the same time configuration includes configuration of parametres of decentralised mode, including working mode, besides, when working mode represents one of MS mode, mode of service MS (SMS) and automatic mode.

EFFECT: realisation of data transfer method in decentralised mode with small radius of action.

27 cl, 12 dwg

FIELD: radio engineering.

SUBSTANCE: basic station comprises facilities to determine capacity of transfer of mobile station on the basis of quality of reception of pilot channel in uplink; facilities of information transfer relative to certain capacity to mobile station; and facilities to receive control channel, transmitted by mobile station in compliance with received information. Accordingly, regardless of history of transfer capacity maintenance in preceding continuous time interval, for the purpose to control capacity, mobile station every time in process of packet transfer receives instruction of capacity establishment from basic station.

EFFECT: control of transfer capacity of common control channel properly so that transfer of common control channel with permanent quality.

17 cl, 18 dwg

FIELD: information technologies.

SUBSTANCE: in jointly used control channel of downlink the resources are distributed by means of distribution table, which is divided into the first section of constant length and at least one second section of variable length. Constant length and circuit of modulation and coding (MCS) of the first section are known in advance. The second variable length and circuit of MCS of the second section may be set in the first section. Noise immunity may be different for various second sections of one and the same table of distribution, or even inside a separate second section, in order to take into account various distance of subscribers from unit of network that performs distribution. Subscribers may be identified in the first section (for instance, constant number of subscribers) and/or in the second section (or additionally assigned subscribers, or all assigned subscribers, if the first section does not identify subscribers).

EFFECT: reliable acceptability of service information volume of jointly used control channel for common throughput capacity of downlink.

26 cl, 11 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication engineering. Disclosed is a method of determining the geographical location of a cellular communication device. The method involves determination of the effective area of the first and second cells of a cellular network and determination of the change of control area on which the cellular communication device is located at the moment in time when control over it shifts from the first to the second cell, according to which determination of the change of control area and effective area of the first and second cells is carried out based on relative position and alignment of antennae of the first and second cells.

EFFECT: high accuracy of locating a communication device.

160 cl, 14 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to mobile communication engineering. Disclosed is a method of transmitting and receiving a multimedia broadcast/multicast service over first and second one-way channels configured for this service. Control information of the first and second one-way channels is transmitted to a mobile terminal over a control downlink, where the control information of the second one-way channel is based on control information of the first one-way channel. The type of radio channel (point-point, point-multiple points) which should be used for the first and/or second one-way channels is determined. Control information for tuning the radio channel is transmitted through the corresponding control channel (MCCH or DCCH). Data of the first one-way channel and second one-way channel are transmitted through at least one multimedia broadcast/multicast service traffic channel (MTCH, DTCH).

EFFECT: more efficient reception of service information by a mobile terminal.

21 cl, 5 dwg

FIELD: information technology.

SUBSTANCE: subscriber profile is created for specifying at least a frequency at which the content provisioning system is to download to the subscriber at least one list of content, in the preferred invention at least one list of songs, which is updated in accordance with at least one criterion. According to the disclosed method, at least one song list is downloaded to the terminal at a time specified in subscriber profile. Also described is a content provisioning system, a network server and a terminal which operate in accordance with the disclosed method.

EFFECT: automation of loading content.

100 cl, 9 dwg

FIELD: information technologies.

SUBSTANCE: method is proposed to provide information on direction related to mobile objects, including the following: periodical reception of identification information (ID) in mobile terminal from movable object by means of signal of radio frequency identification (RFID). Information on location related to ID information may be updated to give updated information on location for mobile object. Updating information on location may be stopped, when movable object is outside zone of RFID of mobile terminal, to save updated information on location as information on location on the last available location for movable object.

EFFECT: provision of information on direction related to mobile objects.

18 cl, 8 dwg

FIELD: information technologies.

SUBSTANCE: method uses double-level hash coding to assign a mobile station first to frequency range, and then to specific frequency in this frequency range. Versions of invention make it possible to assign weights to frequencies, and mobile stations may do has coding using weighted frequencies.

EFFECT: weighing makes it possible to do uneven distribution of mobile stations by frequencies for optimisation of working parametres of the system.

24 cl, 13 dwg

FIELD: information technologies.

SUBSTANCE: method and system are proposed to sign short messages, as well as device of short messages processing. Device of short messages processing receives short message of sender, extracts sender's number from received message, extracts signature of short message corresponding to number of sender from service data base in compliance with sender's number, adds extracted signature into short message and sends signed short message to receiver.

EFFECT: quick provision of valid information on sender.

20 cl, 11 dwg

FIELD: information technologies.

SUBSTANCE: in wireless communication device there is the first unit of communication for contactless communication with other device of wireless communication and reception of set data from other device of wireless communication, the second unit of communication, to establish wireless connection with other device of wireless communication, control unit - to set wireless connection between the second unit of communication and other device of wireless communication with application of set data received by the first unit of communication, and unit of data processing, to save set data before wireless connection is broken, within a specified period of time.

EFFECT: simplified process of establishment of repeated connection between wireless devices.

7 cl, 15 dwg

FIELD: information technologies.

SUBSTANCE: decentralised mode is configured for the first mobile station (MS), operating in decentralised network according to broadband wireless standard; detection of communication in decentralised mode, having simplified protocol of data transfer of broadband wireless standard; realisation of communication with the second MS using data transfer in decentralised mode, at the same time configuration includes configuration of parametres of decentralised mode, including working mode, besides, when working mode represents one of MS mode, mode of service MS (SMS) and automatic mode.

EFFECT: realisation of data transfer method in decentralised mode with small radius of action.

27 cl, 12 dwg

FIELD: radio engineering.

SUBSTANCE: basic station comprises facilities to determine capacity of transfer of mobile station on the basis of quality of reception of pilot channel in uplink; facilities of information transfer relative to certain capacity to mobile station; and facilities to receive control channel, transmitted by mobile station in compliance with received information. Accordingly, regardless of history of transfer capacity maintenance in preceding continuous time interval, for the purpose to control capacity, mobile station every time in process of packet transfer receives instruction of capacity establishment from basic station.

EFFECT: control of transfer capacity of common control channel properly so that transfer of common control channel with permanent quality.

17 cl, 18 dwg

FIELD: information technologies.

SUBSTANCE: in jointly used control channel of downlink the resources are distributed by means of distribution table, which is divided into the first section of constant length and at least one second section of variable length. Constant length and circuit of modulation and coding (MCS) of the first section are known in advance. The second variable length and circuit of MCS of the second section may be set in the first section. Noise immunity may be different for various second sections of one and the same table of distribution, or even inside a separate second section, in order to take into account various distance of subscribers from unit of network that performs distribution. Subscribers may be identified in the first section (for instance, constant number of subscribers) and/or in the second section (or additionally assigned subscribers, or all assigned subscribers, if the first section does not identify subscribers).

EFFECT: reliable acceptability of service information volume of jointly used control channel for common throughput capacity of downlink.

26 cl, 11 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication engineering. Disclosed is a method of determining the geographical location of a cellular communication device. The method involves determination of the effective area of the first and second cells of a cellular network and determination of the change of control area on which the cellular communication device is located at the moment in time when control over it shifts from the first to the second cell, according to which determination of the change of control area and effective area of the first and second cells is carried out based on relative position and alignment of antennae of the first and second cells.

EFFECT: high accuracy of locating a communication device.

160 cl, 14 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to mobile communication engineering. Disclosed is a method of transmitting and receiving a multimedia broadcast/multicast service over first and second one-way channels configured for this service. Control information of the first and second one-way channels is transmitted to a mobile terminal over a control downlink, where the control information of the second one-way channel is based on control information of the first one-way channel. The type of radio channel (point-point, point-multiple points) which should be used for the first and/or second one-way channels is determined. Control information for tuning the radio channel is transmitted through the corresponding control channel (MCCH or DCCH). Data of the first one-way channel and second one-way channel are transmitted through at least one multimedia broadcast/multicast service traffic channel (MTCH, DTCH).

EFFECT: more efficient reception of service information by a mobile terminal.

21 cl, 5 dwg

FIELD: information technologies.

SUBSTANCE: method of transfer includes stages, at which information of mobility is established, including information elements to indicate at least one type of service/roaming transfer according to whether support of interactive network is available or not to transfer service/roaming; information of mobility is inserted, at least, into one of ESG, related to broadcasting services, message of notice and independent service message, so that information of mobility is transferred to at least one terminal; and service or roaming of terminal is transferred according to information of mobility.

EFFECT: invention provides for support of service and roaming transfer in digital broadcasting system.

28 cl, 19 dwg, 11 tbl

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