CN101803245B

CN101803245B - Method of effectively transmitting radio resource allocation request in mobile communication system

Info

Publication number: CN101803245B
Application number: CN2008801079047A
Authority: CN
Inventors: 李英大; 千成德; 朴成埈; 李承俊
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2007-09-20
Filing date: 2008-09-19
Publication date: 2013-07-17
Anticipated expiration: 2028-09-19
Also published as: CN101803245A; KR101435688B1; JP5033918B2; JP2010538573A; KR20090031265A; BRPI0816666A2

Abstract

A method allowing a terminal with data to be transmitted in an uplink direction to transmit a radio resource allocation request message to a base station by effectively using radio resource(s) to its maximum level is disclosed. In particular, the method allows the terminal to select a radio resource allocation request message of a proper format according to a situation of radio resource(s) or the amount of data of each channel and transmit the same to the base station.

Description

In mobile communication system, send the method for allocation of radio resources request effectively

Technical field

The present invention relates to provide wireless communication system and the portable terminal of radio communication, the allocation of radio resources request message is sent to the method for base station in particular to the terminal that allows to have the data that will send at up direction by farthest effectively utilizing Radio Resource.Particularly, the present invention relates to allow terminal to select the allocation of radio resources request message of appropriate format also this message to be sent to the method for base station according to the situation of Radio Resource or the data volume of each channel.

Background technology

Fig. 1 shows the network configuration that can be applicable to prior art and E-UMTS of the present invention (mobile communication system).The E-UMTS system is by the UMTS system evolved, and 3GPP is continuing to prepare can be applicable to its fundamental norms at E-UMTS.The E-UMTS system can classify as LTE (Long Term Evolution: system Long Term Evolution).

The E-UMTS network can be divided into evolution E-UTRAN and core net (CN).E-UTRAN comprises terminal (back is called UE (User Equipment, subscriber equipment)), base station (back is called eNode B), the IAD (AG) that is positioned at network one end and is connected with external network.AG can be divided into for the treatment of the part of customer service with for the treatment of the professional part of control.In this case, the AG of the AG of process user business and processing controls business can use new interface to communicate with one another.In an eNB, can there be one or more residential quarter.Can between each eNode, use and be used for sending customer service or the professional interface of control.CN can comprise the node of registering for to AG and UE user.Can use the interface of distinguishing for to E-UTRAN and CN.

Can the Radio interface protocols layer between terminal (UE) and the network be divided into ground floor 1 (L1), the second layer (L2) and the 3rd layer (L3) based on low three layers of known Open System Interconnection (OSI) master pattern in communication system.The physical layer that belongs to ground floor (L1) uses physical channel that information transfer service is provided, and is positioned at the 3rd layer RRC (Radio Resource Control: Radio Resource is controlled) layer of Radio Resource that is used between control terminal and the network.For this reason, the RRC message between rrc layer exchange termination and the network.Rrc layer can be positioned at network node (such as eNodeB, AG etc.) with distributing to be located, and perhaps only is positioned at the eNodeB place or is positioned at the AG place.

Fig. 2 illustration the radio interface protocol architecture based on 3GPP Radio Access Network standard between terminal and base station.Radio interface protocols has the level course that comprises physical layer, data link layer and network layer, and has and comprise for user's face of transmitting subscriber information and be used for the perpendicular layers of the chain of command of transmission of control signals (signaling).Can protocol layer be divided into ground floor 1 (L1), the second layer (L2) and the 3rd layer (L3) based on low three layers of known Open System Interconnection (OSI) master pattern in communication system.

Below, will introduce each layer of the radio protocol user plane of the wireless protocols chain of command of Fig. 2 and Fig. 3.

Physical layer (that is ground floor (L1)) uses physical channel to provide information transfer service to upper layer.Physical layer is connected with the upper layer that is known as medium access control (MAC) layer via transmission channel, and transmits data via transmission channel between MAC layer and physical layer.Simultaneously, transmit data in (that is, between the physical layer of the physical layer of transmitting terminal and receiving terminal) between the different physical layers by physical channel.

The MAC layer of the second layer provides service via logic channel to Radio Link control (RLC) layer (the upper layer of MAC layer).The rlc layer of the second layer can be supported reliable transfer of data.The function of rlc layer can be implemented as a functional block among the MAC, and in this case, rlc layer can not exist.The PDCP layer of the second layer is carried out header compression function, the size that comprises the header that the IP of large-sized, unnecessary control information divides into groups with minimizing, thus, can in having the less relatively wave point of bandwidth, transmit IP grouping (such as IPv4 grouping or IPv6 grouping) efficiently.

Only in chain of command, defined Radio Resource control (RRC) layer of the bottommost that is positioned at the 3rd layer, the configuration of rrc layer and radio bearer (RB), reconfigured and discharge the control of handling logic channel, transmission channel and physical channel relevantly.Here, radio bearer represent to be provided by the second layer (L2), be used between terminal and UTRAN, carrying out the service of transfer of data.

Be used for data are comprised from the descending transmission channel that network is sent to terminal: BCH (the Broadcast Channel that is used for transfer system information, broadcast channel), be used for transmitting the descending SCH (Shared Chanel, shared channel) of customer service or control message.Can send service message or the control message of descending multicast or broadcast service via descending SCH or descending MCH (Multicast Channel, multicast channel).Be used for comprising for the RACH (Random Access Channel, Random Access Channel) that transmit initial control message and the up SCH that be used for transmit customer service or control message from the uplink transport channel that terminal is sent to network data.

Below, will introduce the universal method of the terminal reception data in the LTE system.

Except specific control signal or specific business datum, base station and terminal mainly transmit and receive data via the physical channel PDSCH (Physical Downlink SharedChannel, Physical Downlink Shared Channel) that uses transmission channel DL-SCH.At PDCCH (PhysicalDownlink Control Channel, Physical Downlink Control Channel) comprise in the terminal (one or more terminal) that the data about PDSCH will send to information, about terminal how to receive the PDSCH data information, how to be received or the information of decoding etc. about the PDSCH data, and these information are sent out away.

For example, suppose in specific subframe, to send the specific PDCCH that comprises about the information of following data, these data have been passed through the CRC mask RNTI (Radio Network Temporary Identity (perhaps identifier): Radio Network Temporary Identifier accords with (or identifier)) " A ", and via Radio Resource (for example, frequency location) " B ", (for example, transport block size, modulation and coded message etc.) " C " sends by transport format information.Then, one or two or more terminals that are arranged in respective cell utilize their RNTI information to monitor PDCCH, if and these PDCCH have " A RNTI " at the time corresponding point, then terminal will receive PDCCH, and receive the PDSCH that is indicated by " B " and " C " via the information of PDCCH.

In this is handled, in order to notify about sending RNTI via the wireless resource allocation information information relevant with which terminal of each PDCCH transmission.RNTI comprises special-purpose RNTI and public RNTI.Special-purpose RNTI is used for data are sent to particular terminal, perhaps receives data from particular terminal, and has been carried out the terminal use of registration in the base station by its information.And public RNTI is used for sending data to the terminal that is not assigned with special-purpose RNTI because its information is not registered to the base station, perhaps receives data from such terminal, perhaps is used for sending by the total information (such as system information) of a plurality of terminals.For example, RA-RNTI or T-C-RNTI during RACH handles are public RNTI.

As mentioned above, base station and terminal are two main entities that constitute E-UTRAN.Radio Resource comprises ascending wireless resource and downlink radio resource in the residential quarter.Handle distribution and the control of the ascending wireless resource in the residential quarter and downlink resource the base station.That is to say the base station determines which terminal to use which resource by sometime.For example, the base station can be determined frequency 100MHz to 101MHz is distributed to user 1 to send 0.2 second downlink data after 3.2 seconds.After this was determined, the base station can correspondingly notify corresponding terminal to allow this terminal downlink data receiving.Simultaneously, when the base station is determined on up direction and which and how many resources which terminal utilizes send data, and allows corresponding terminal to send data in time corresponding.With of the prior art, call out is connected in the single terminal situation that continues the single Radio Resource of use compare, the dynamic management of this Radio Resource that is undertaken by the base station is very effective.But recently, many business are divided into groups based on IP, and this dynamic management is inappropriate in this respect.That is to say that most of Packet Service is not constantly to generate grouping, but has many sections that do not send any information, in this case, is inefficiency to single terminal distribution Radio Resource constantly in calling out connection.Therefore, the E-UTRAN system adopts and to have only when terminal needs or have only when having business datum just method to the terminal distribution Radio Resource.

In the LTE system, in order to use Radio Resource effectively, the base station should know which data each user waits for.Concerning the situation of the data of down link, from the IAD transmitting downlink data.That is to say the base station knows to send how many data to each user via down link.And concerning the situation of the data of up link, if each terminal does not have informing base station to plan directly to send to the data of up link about it, then the base station will not know how many ascending wireless resources are each terminal need.Therefore, distribute in order to carry out suitable ascending wireless resource, each terminal should the information that wireless resource scheduling is required offer the base station.

That is to say that if terminal has the data that will send, then it gives the base station with this advisory, the base station is come to send radio resource assignment message to terminal based on this information then.

In this case, when terminal notified this terminal to have the data that will send to the base station, terminal was actually to the data volume of base station notice about assembling in its buffering area, and this is known as Buffer Status Report (BSR, buffer status report).

As mentioned above, if there are data in terminal and satisfy certain conditions in its buffering area, then terminal sends to the base station with BSR.

Yet in this respect, BSR and terminal and base station are actual wishes that the user data of exchange does not directly contact.That is to say that BSR is used for only transmitting the base station to the required information of the effective distributing radio resource of terminal, rather than transmit actual user data.

Therefore, preferably have littler BSR, reduce thus for the waste of radio resources that sends BSR, that is to say that BSR is preferably simple as far as possible.

For single terminal, have several logic channels, and each logic channel has different priority.For example, when base station and terminal use (Signaling Radio Bearer: when Signaling Radio Bearer) SRB exchanges RRC message, if there are data among the SRB, then terminal should be correspondingly informing base station as early as possible, in this case, the base station should be more preferably to this terminal distribution Radio Resource.Simultaneously, be used for VoIP (Voice over InternetProtocol: data internet voice protocol) if in logic channel, exist, and except this terminal, also there is other terminal (these terminals have the channel that is set to the priority higher than VoIP), and in the channel with higher priority of residential quarter, there are data, then terminal need not to send to the base station rapidly BSR, and the base station also need not immediately to the terminal distribution Radio Resource.Therefore, consider the difference of each channel, BSR is preferably accurate as far as possible.That is to say that in this case, along with BSR becomes big, it can comprise more detailed information, this information has been impelled the improvement of the performance of base station dispatcher side.

Therefore, need a kind of when satisfying above two conflict conditions effectively informing base station about the method for the buffer state of terminal.

Summary of the invention

Therefore, in order to address the above problem, the various features of introducing have been conceived here.An aspect of exemplary execution mode provides a kind of method, terminal sends the allocation of radio resources request message by farthest effectively utilizing Radio Resource to the base station thus, terminal is selected the allocation of radio resources request message of appropriate format according to the state of Radio Resource or for the data volume of each channel of terminal setting, and the allocation of radio resources request message of this appropriate format is sent to the base station.

It is a kind of for the method for carrying out data communication at wireless communication system that this specification provides, and this method may further comprise the steps: definition is used for the multiple BSR form of transmit buffer status report (BSR); Select a kind of form in the described multiple BSR form based on certain conditions; Generate BSR according to selected Buffer Status Report form; And send the BSR that generates.

Describe in detail below according to the present invention and by reference to the accompanying drawings, above-mentioned and other purpose, feature, aspect and advantage of the present invention will become apparent.

Description of drawings

Fig. 1 shows the network configuration that can be applicable to prior art and E-UMTS of the present invention (mobile communication system);

Fig. 2 shows in the example arrangement based on the chain of command of the UE of 3GPP Radio Access Network standard and the Radio interface protocols between the UTRAN;

Fig. 3 shows in the example arrangement based on user's face of the UE of 3GPP Radio Access Network standard and the Radio interface protocols between the UTRAN;

Fig. 4 is the figure according to the allocation of radio resources of prior art;

Fig. 5 shows the exemplary diagram based on the random access procedure of competition;

Fig. 6 sends the figure of the employed multiple BSR form of Buffer Status Report (BSR) according to an embodiment of the invention by terminal to the base station; And

Fig. 7 shows according to the short Buffer Status Report of the MAC Control Element of an embodiment of the invention and the example format of long Buffer Status Report.

Embodiment

One aspect of the present invention relates to the inventor about the understanding of the above-mentioned problems in the prior art, and will specifically introduce in the back.Based on this understanding, developed each feature of the present invention.

Though being depicted as, the present invention can in mobile communication system (such as, the UMTS that under the 3GPP standard, develops), realize that the present invention can also be applied to carry out in other communication system of work according to meeting various criterion and standard.

Below, introduce structure and operation according to preferred implementation of the present invention with reference to the accompanying drawings.

Usually, terminal (or UE) is being carried out random access procedure under the following situation: 1) when terminal because not do not carry out with base station (or eNB) that RRC is connected when carrying out initially access, 2) when terminal inserts Target cell first in handoff procedure, 3) when receiving the instruction request of base station, 4) when not adjusting up time synchronized, perhaps there is not branch to be used in when having transmitting uplink data under the situation of particular radio resource of request Radio Resource, and 5) when under the situation of radio link failure or handoff failure, carrying out recovery process.

In the LTE system, the base station is to the special-purpose random access lead code of specific terminal distribution, and this terminal is carried out non-competing random access procedure, and this non-competing random access procedure utilizes random access lead code to carry out random access procedure.In other words, when selecting random access lead code, there are two processes: a kind of random access procedure that is based on competition, in this process, terminal is selected a use in the particular group randomly, and it is another kind of based on non-competing random access procedure, in this process, terminal is used the random access lead code of being given particular terminal by the base station specific assigned.Narrate as the back, the difference of two kinds of random access procedures is whether can to take place the collision problem that produces owing to competition.And, narrate as top, only in handoff procedure or when receiving the instruction request of base station, just use based on non-competing random access procedure.

Based on above-mentioned explanation, Fig. 5 shows based on the terminal in the random access procedure of competition and the operating process between the base station.

At first, be in based on the terminal in the random access procedure of competition and can in one group of random access lead code by system information or switching command indication, select a random access lead code randomly, the PRACH resource of random access lead code can be selected to send, selected random access lead code can be sent then to base station (step 1).

After having sent random access lead code, terminal can attempt receiving the response (step 2) at its random access lead code in the accidental access response receive window by system information or switching command indication.More particularly, send accidental access response information with the form of MAC PDU, and can transmit MAC PDU at Physical Downlink Shared Channel (PDSCH).In addition, also having transmitted Physical Downlink Control Channel (PDCCH) makes terminal can correctly be received in upward information transmitted of PDSCH.That is to say that PDCCH can comprise about transformat of the frequency of the Radio Resource of the terminal information that should receive PDSCH, PDSCH and temporal information, PDSCH etc.Here, if successfully receive PDCCH, then terminal can correctly be received in PDSCH according to the information on the PDCCH and go up the accidental access response that sends.Accidental access response can comprise that random access lead code identifier (ID), UL authorize, C-RNTI, time are adjusted instruction (timealignment command) etc. temporarily.Here, because accidental access response can comprise the accidental access response information for one or more terminal, so, effectively (available to which terminal in order to notify terminal such as UL mandate, interim C-RNTI and time to adjust the information of instructing, come into force), in accidental access response, comprise the random access lead code identifier.Here, the random access lead code identifier can be identical with the random access lead code of being selected by terminal in step 1.

If terminal receives itself effective accidental access response, then terminal can be handled each information that comprises in the accidental access response.That is to say that the terminal applies time is adjusted instruction, and stores interim C-RNTI.In addition, terminal uses UL to authorize with the data in the buffering area that is stored in terminal to the base station transmission or newly-generated data (step 3).Here, terminal identifier should be included in the data that are contained in the UL mandate (message 3) in essence.This be because, in the random access procedure based on competition, the base station can determine not which terminal carrying out random access procedure, still, the back should identification terminal in order to solve competition.Here, provide two kinds of different schemes to comprise terminal identifier.The first string is: if terminal had received the effective cell identifier in corresponding cell allocation before random access procedure, then authorize to send the cell identifier of terminal by UL.On the contrary, second scheme is: if terminal did not receive effective cell identifier before random access procedure, then send the unique identifier (for example, S-TMSI or ID at random) of terminal.Usually, unique identifier is longer than cell identifier.In step 3, if authorizing by UL, terminal sent data, then the starting terminal competition solves timer.

By being included in after UL in the accidental access response authorized to send the data that have terminal identifier, the competition of terminal wait base station solves indication (instruction).That is to say that the terminal prelibation is tried and received PDCCH to receive specific message (step 4).Here, there are two kinds of schemes that receive PDCCH.As mentioned above, if the terminal identifier that authorize to send via UL is cell identifier, then terminal attempts using its oneself cell identifier to receive PDCCH.If authorizing the terminal identifier that sends via UL is unique identifier, then terminal attempts utilizing the interim C-RNTI that comprises in accidental access response to receive PDCCH.Then, be the situation of cell identifier for the terminal identifier that authorize to send via UL, if before conflict solution timer is expired, cell identifier by terminal receives PDCCH (message 4), then terminal is defined as success (normally) and carries out random access procedure, thereby finishes random access procedure.Be the situation of unique identifier for the terminal identifier that authorize to send via UL, if conflict solve timer expired before, receive PDCCH by interim cell identifier, then the data (message 4) that transmitted by the PDSCH of PDCCH indication of terminal inspection.If the unique identifier of terminal is included in the data, then terminal is defined as success (normally) and carries out random access procedure, thereby finishes random access procedure.

The invention provides a kind of like this method, terminal can provide information about the data volume of collecting effectively by this method in its buffering area, makes the amount that is used for sending the required Radio Resource of Buffer Status Report (BSR) minimize simultaneously.

For this reason, in the present invention, defined multiple BSR form, terminal is selected a kind of form in the multiple BSR form according to its situation, disposes (generation) BSR according to selected BSR form, and BSR is sent to the base station.Particularly, in the present invention, defined two kinds of BSR forms: a kind of is common BSR, and another kind is the BSR that shortens.If if terminal distribution be enough to send common BSR Radio Resource in institute's assigned radio resource, have enough places or space to comprise that if common BSR or the ascending wireless resource that distributes are enough to comprise about the channel of whole configurations or whole information of the channel group of configuration, then in MAC PDU, can comprise common BSR, and can this common BSR be sent to the base station via assigned radio resource.And if if terminal is not assigned with the Radio Resource that is enough to send common BSR and does not have enough places or space to comprise that if common BSR or the ascending wireless resource that distributes are not enough to comprise about the channel of whole configurations or whole information of the channel group of configuration in institute's assigned radio resource, the BSR that then in MACPDU, can comprise shortening, and can the BSR of this shortening be sent to the base station via assigned radio resource.

For the logic channel group of terminal setting can be divided into four logic channel groups at most.That is to say, maximum four the logic channel groups of base station and terminal definable, and each logic channel belongs to one in the logic channel group of setting.Terminal can obtain the summation of the data of collecting in the buffering area of each channel according to the logic channel group, and the summation of these data can be sent to the base station.That is to say that terminal is not that the amount of the buffering area that will collect in each channel sends to the base station, but obtains to be stored in the summation of the buffering area in each channel that belongs to the logic channel group, and corresponding summation information is sent to the base station.The present invention supports this structure effectively.Like this, common BSR can comprise the whole buffer information about the channel of each setting or each logic channel group, and the BSR that shortens can comprise about some of the channel of each setting or each logic channel or the buffer information of a part only.Here, common BSR can comprise the BSR of each channel that arranges at terminal, and the BSR that shortens can comprise the BSR of some channel in the whole channels that arrange at terminal.In addition, common BSR can comprise the BSR of each the logic channel group that arranges at terminal, and the BSR that shortens can comprise the BSR of some channel group in the whole logic channel groups that arrange at terminal.

For example, in order to send BSR to the base station, the terminal that stores data in the buffering area is carried out random access procedure, can distribute institute's assigned radio resource by the base station that is used for transmission RACH message 3.In this case, if institute's assigned radio resource is enough, then the configurable common BSR of terminal also sends this common BSR.But, if institute's assigned radio resource deficiency that is to say, if institute's assigned radio resource comprises common BSR inadequately, the BSR of the configurable shortening of terminal and send the BSR of this shortening then.That is to say that according to the present invention, terminal can send the BSR of common BSR or shortening according to institute's assigned radio resource amount.

Fig. 6 is the figure that sends the employed multiple Buffer Status Report of BSR (BSR) form according to the terminal of an embodiment of the invention to the base station.As shown in Figure 6, suppose to be provided with 4 channels of total at terminal, top shows the BSR of shortening, and the bottom shows common BSR.Because suppose exist to amount to 4 buffering areas, thus common BSR notice about the state of the buffering area of each channel, and the BSR that shortens notice is about the state of the part in them (for example, only the buffering area of individual channel).BSR according to shortening of the present invention can be applied to following situation: as in the RACH process or handling not to the situation of the many Radio Resources of terminal distribution, common BSR greater than the situation of the amount of institute's assigned radio resource or the data volume that can be sent by Radio Resource or owing in other channel at the terminal setting, have too much data, therefore can not comprise the situation about the information of buffering area.

Buffer Status Report (BSR) process is used to serving BS (for example, eNB) to provide about terminal (for example, the information of the data volume in last row buffer UE).Here, if one of following event, then can trigger Buffer Status Report (BSR), that is: 1) the transmission buffering area of upstream data incoming terminal, and these data belong to the logic channel of the higher priority of the priority of the channel that has had data in the transmission buffering area that has than terminal, and BSR is called " conventional BSR " hereinafter in this case; 2) distributed ascending resource, and the bit number of filling greater than Buffer Status Report MAC (Medium Access Control: the medium access control) size of control unit, BSR is called " filling (padding) BSR " hereinafter in this case; 3) change has taken place in Serving cell, and BSR is called " conventional BSR " hereinafter in this case; 4) cycle BSR timer is expired, and BSR is called " cycle BSR " hereinafter in this case.

For conventional and cycle BSR: when transmission BSR, if in Transmission Time Interval (TTI), have only a logic channel group (LCG) to have the data of buffering, then can report the BSR of shortening, when sending BSR, if more than one LCG has the data of buffering in TTI, the then long BSR of report or normally BSR.For filling BSR: if the quantity of filling bit is equal to or greater than the size of short BSR, but the size less than long BSR, then can report the BSR of the shortening of the LCG under the logic channel of the limit priority with buffered data, if and the quantity of filling bit is equal to or greater than the size of long BSR, then can report long BSR or common BSR.In addition, Buffer Status Report (BSR) MAC Control Element can be made up of short BSR form and long BSR form.

Fig. 7 shows the example format according to short Buffer Status Report of the present invention and long Buffer Status Report.As illustrated in Fig. 7, for example, short BSR form can comprise a LCG id field and a corresponding buffer size (BS) field, and long BSR form can comprise 4 BS fields corresponding to LCG ID.Here, can identify the BSR form by the MAC PDU sub-header with LCID.LCG ID and BS field can be defined as follows: 1) LCG ID: logic channel group id field, and it has identified the group of being reported the logic channel of buffer state, and this field length can be 2 bits; 2) buffer size: buffer size field, it has identified after having set up MAC PDU, available total amount of data in whole logic channels of logic channel group, this data volume are represented that by byte number it can be included in rlc layer and the PDCP layer and transmit available total data.In the calculating of buffer size, can not consider the size of RLC and mac header.The length of this field can be 6 bits.

According to above explanation, the invention provides multiple BSR form, based on these forms, terminal can be selected suitable BSR under the situation of considering channel status or data mode, and sends it to the base station, thereby uses Radio Resource effectively.

It is a kind of for the method that transmits data at wireless communication system that the present invention can provide, and this method may further comprise the steps: definition is used for the multiple BSR form of transmit buffer status report (BSR); Select a kind of in the described multiple BSR form based on certain conditions; Generate BSR according to selected Buffer Status Report form; And send the BSR that generates.Wherein, described multiple BSR form comprises the BSR of common BSR and shortening.If the ascending wireless resource that distributes is enough to comprise about the channel of whole configurations or the information of whole channel group that dispose, then selects described common BSR.If the ascending wireless resource that distributes is not enough to comprise about the channel of whole configurations or the information of whole channel group that dispose, then select the BSR of described shortening.Described common BSR comprises the buffer information about each channel that arranges for described terminal.Described common BSR comprises about each logic channel that arranges for described terminal or the buffer information of logic channel group.The BSR of described shortening comprises the buffer information about a part of channel in the whole channels that arrange for described terminal.The BSR of described shortening comprises the buffer information of each logic channel, some channel or some channel group about the logic channel group.When carrying out random access procedure, use the BSR that shortens.

Though the present invention is described under the environment of mobile communication, the present invention can also use in any wireless communication system that uses mobile device (for example being equipped with PDA and the notebook computer of wireless communication ability (that is interface)).In addition, the use that is used for describing particular term of the present invention is not the wireless communication system that will limit the scope of the present invention to particular type.The present invention also is applicable to other wireless communication system (for example TDMA, CDMA, FDMA, WCDMA, OFDM, EV-DO, Wi-Max, Wi-Bro etc.) that uses different air interfaces and/or physical layer.

Can utilize standard program and/or engineering that these illustrative embodiments are embodied as method, device or goods to produce software, firmware, hardware or their combination in any." goods " used herein word (for example relates to the code realized or logic in hardware logic, integrated circuit (IC) chip, field programmable gate array (FPGA), application-specific integrated circuit (ASIC) (ASIC) etc.) or computer-readable medium is (for example, magnetic storage medium (for example, hard disk drive, floppy disk, tape etc.), optical memory (CD-ROM, CD etc.), volatibility and non-volatile memory device (for example, EEPROM, ROM, PROM, RAM, DRAM, SRAM, firmware, FPGA (Field Programmable Gate Array) etc.)).

Code in the computer-readable medium can be by processor access and execution.In addition, can also come the code of accomplished illustrative embodiments by transmission medium or the file server from the network.In this case, the goods of carrying out this code can comprise transmission medium, for example Network transmission line, wireless transmission medium, the signal by the space propagation, radio wave, infrared signal etc.Certainly, those skilled in the art will know can make multiple modification to this configuration without departing from the scope of the invention, and goods can comprise any information bearing medium as known in the art.

Because can under the situation that does not depart from spirit of the present invention or inner characteristic, implement the present invention according to various ways, so it should also be understood that, except as otherwise noted, otherwise above-mentioned execution mode is not limited to any details of above stated specification, but should in the defined spirit and scope of claims, carry out the understanding of broad sense, and therefore, claims are intended to contain whole variations and the modification in the equivalency range that falls into claims scope and border or this scope and border.

Claims

1. one kind is used for the method for carrying out data communication at wireless communication system, it is characterized in that, this system comprises the multiple BSR form for transmit buffer status report (BSR), described multiple form comprises short BSR form and long BSR form at least, and that carries out in being connected to the terminal of described system (UE) said method comprising the steps of:

Select a kind of form in the described multiple BSR form, wherein when sending BSR, if in Transmission Time Interval (TTI), have only a logic channel group (LCG) to have the data of buffering, then select described short BSR form, perhaps when sending BSR, if more than one logic channel group (LCG) has the data of buffering in described Transmission Time Interval (TTI), then select described long BSR form;

Generate BSR according to selected BSR form; And

Send the BSR that generates.

2. method according to claim 1, wherein, described long BSR comprises the buffer information about each channel that arranges for described terminal (UE).

3. method according to claim 1, wherein, described long BSR comprises about each logic channel that arranges for described terminal (UE) or the buffer information of logic channel group.

4. method according to claim 1, wherein, described short BSR comprises the buffer information about some channel in the whole channels that arrange for described terminal (UE).

5. method according to claim 1, wherein, described short BSR comprise about some of the channel of each setting or each logic channel or only a part buffer information, the BSR of some channel in the whole channels that arrange at described terminal, the perhaps BSR of some channel group in the whole logic channel groups that arrange at described terminal.

6. method according to claim 1 wherein, is used described short BSR when carrying out random access procedure.