CN101183916B - State information processing method in wireless link control entity - Google Patents

State information processing method in wireless link control entity Download PDF

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CN101183916B
CN101183916B CN 200710179963 CN200710179963A CN101183916B CN 101183916 B CN101183916 B CN 101183916B CN 200710179963 CN200710179963 CN 200710179963 CN 200710179963 A CN200710179963 A CN 200710179963A CN 101183916 B CN101183916 B CN 101183916B
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pdu
amd
rlc
status
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CN101183916A (en
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陈春明
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普天信息技术研究院有限公司
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Abstract

The invention discloses a state information processing method in the RLC. The invention is characterized in that the RLC can extract the piggybacked STATUS PDU to renew the state variable without waiting the receipt of complete SDU so that the sequences of processing and receiving the STATUS PDU and the piggybacked STATUS PDU can be ensured to be consistent, which avoids the RLC reset caused by the preferred renewal state variable according to the latter received STATUS PDU. The invention has the advantages of avoiding the mutation of the data transmission rate, and improving the reliability of the data transmission.

Description

一种无线链路控制实体中的状态信息处理方法 A radio link control status of the entities in the information processing method

技术领域 FIELD

[0001] 本发明涉及移动通信中的数据传输技术,特别涉及一种无线链路控制实体(RLC) 中的状态信息处理方法。 [0001] The present invention relates to data transmission in a mobile communication technology, particularly relates to a method for processing state information of a radio link control entity (RLC) in.

背景技术 Background technique

[0002] 在RLC间基于确认模式(AM)的数据传输过程中,发送端向接收端发送确认模式的协议数据单元(AMD PDU),而接收端会向发送端响应是否成功接收到AMD PDU,使得发送端能够确定是否需要重传该AMD PDU。 [0002] among RLC data transmission based on the acknowledged mode (AM) of the process, the sender sends the acknowledgment mode to the receiving end protocol data unit (AMD PDU), and the receiver responds to the sender if successfully received AMD PDU, so that the transmitting side can determine whether to retransmit the AMD PDU.

[0003] 发送端和接收端都是一个RLC实体,每个RLC实体均包括发送侧和接收侧。 [0003] transmitting end and the receiving end is one RLC entity, each RLC entity includes transmitting and receiving sides. 图1 为现有RLC模型的结构示意图。 1 is a schematic structure of a conventional RLC model. 如图1所示,RLC由左侧的发送侧来实现数据发送。 As shown in FIG. 1, RLC transmission side to the left to achieve data transmission. 在发送侧,将上层的待发送数据包进行分割/串联(Segmentation/Concatenation)处理并添加RLC头之后构成AMD PDU ;然后,将AMD PDU发送给复用单元(MUX),同时缓存在重传缓冲和管理单元(Retransmission Buffer&Management Unit),以便于在该AMD PDU未被对端成功接收时进行重传;复用单元根据RLC控制单元的指示,选择直接接收到的AMD PDU或重传缓冲和管理单元中的AMD PDU发送至发送缓冲器(Transmission Buffer),即选择发送新的AMD PDU还是选择重传AMD PDU ;发送缓冲器中的AMD PDU经后续相应处理后即可发送。 Constituting the AMD PDU after the transmitting side, the upper layer data packet being sent divided / serial (Segmentation / Concatenation) process and add RLC header; then sent AMD PDU to the multiplexing unit (the MUX), while buffered in the retransmission buffer and a management unit (retransmission buffer & management unit), for retransmission at the time of not successfully received peer in the AMD PDU; multiplexing unit according to an instruction RLC control unit selects AMD PDU directly received or the retransmission buffer and management unit the AMD PDU is transmitted to the transmission buffer (transmission buffer), i.e. to sending new AMD PDU or AMD PDU ARQ; to transmit the AMD PDU in the transmission buffer after the respective subsequent treatment. [0004] 接收端会根据其接收侧是否成功接收到AMD PDU而向发送端响应。 [0004] The reception side in response to the transmitting end whether the receiving side successfully received AMD PDU according to. 具体来说,接收端通过其发送侧向发送端的响应中包括RLC超域(SUFI)信息,响应方式包括两种:一种方式,接收端将RLC SUFI信息构成一状态协议数据单元(STATUS PDU)后立即响应至发送端的接收侧;另一种方式,接收端将多个RLC SUFI信息分别构成对应的多个携带状态协议数据单元(piggybacked STATUS PDU)后,将多个piggybacked STATUS PDU分别携带于不同的AMD PDU,然后再反馈至发送端的接收侧。 Specifically, the receiving end sends a response to the transmitter side of RLC super domain comprises (SUFIs) information, comprising respond in two ways: a way, the receiving side RLC SUFIs information constituting a status PDU (STATUS PDU) immediate response after transmitting end to the receiving side; after another way, the receiving end respectively constitute a plurality of RLC SUFI information corresponding to a plurality of protocol data unit carried state (piggybacked sTATUS PDU), a plurality of, respectively, carry piggybacked sTATUS PDU to different the AMD PDU, the receiving side and then fed back to the transmitting end.

[0005] 对于上述两种方式的响应,发送端侧会采用不同的处理方式。 [0005] In response to the above two methods, the sender side will use a different approach.

[0006] 如果接收端采用STATUS PDU方式进行响应,参见图1右侧的接收侧,则发送端接收到STATUS PDU后,立即根据该STATUS PDU更新状态变量,并由复用单元选择缓存在重传缓冲和管理单元内的对应AMD PDU重新发送,同时,删除重传缓冲和管理单元中已被接收端成功接收到的AMD PDU。 After [0006] receiving end if the STATUS PDU receiving side response mode, see the right side of FIG. 1, the sender receives the STATUS PDU, STATUS PDU immediately updated based on the state variable, selected by the multiplexing unit in the retransmission buffer and buffer management unit within the corresponding AMD PDU resending, and deleting the retransmission buffer and management unit has been successfully received by the receiving end AMD PDU.

[0007] 如果接收端采用piggybacked STATUS PDU方式进行响应,参见图1右侧的接收侧,则发送端的接收侧需要先将AMD PDU进行解密,将解密得到的AMD PDU逐一缓存至接收缓冲禾口重传管理单元(Rec印tion Buffer&Retra固ission Management Unit);由于各細PDU分别包含了同一个服务数据单元(SDU)的一个分断,因此,在该SDU接收完成后,再将接收缓冲和重传管理单元中的AMD PDU进行去RLC头,并从AMD PDU中提取出piggybacked STATUS PDU;然后,发送端再根据提取出的piggybackedSTATUS PDU更新状态变量,并由复用单元选择缓存在重传缓冲和管理单元内的对应AMD PDU重新发送,同时,删除重传缓冲和管理单元中已被接收端成功接收到的AMD PDU。 [0007] If the receiving side receiving end piggybacked STATUS PDU receiving side response mode, see the right side of FIG. 1, the transmit end of the first AMD PDU needs to be decrypted, the decrypted AMD PDU to a receiving buffer cache individually Wo Kouchong transmission management unit (Rec printed tion buffer & Retra solid ission management unit); since each fine PDU contains the same service data unit (SDU), respectively, a breaking, and thus, after the SDU reception is completed, then the reception buffer and retransmission management AMD PDU units to perform RLC header and extracts from AMD PDU piggybacked sTATUS PDU; then, the transmit end and then from the extracted update state variables piggybackedSTATUS PDU by the multiplexing unit selecting buffer and the retransmission buffer management unit the corresponding AMD PDU in re-transmission, and deleting the retransmission buffer and management unit has been successfully received by the receiving end AMD PDU.

[0008] 在实际数传过程中,接收端不会仅限于一种响应方式,而会采取混合的响应方式。 [0008] In actual data transmission process, the receiving end will not be limited to one way of response, and the response will take the mixed manner. 这样,就会存在以下问题: In this way, there will be the following problems:

[0009] 参见图2,假设RLC1的发送侧先后向RLC2的接收侧发送了AMDPDU1、 AMD PDU2、 AMD PDU3、以及STATUS PDU1。 [0009] Referring to Figure 2, assume that the sending side successively transmits the RLC1 AMDPDU1 RLC2 of the receiving side, AMD PDU2, AMD PDU3, and STATUS PDU1. 其中,AMD PDU1、AMD PDU2、AMD PDU3分别包含了同一个SDU 的各个分段;AMD PDU3包含了piggybacked STATUS PDU,表示RLC2之前向RLC1发送的某个AMD PDU是否被正确接收;STATUS PDU1表示RLC2之前向RLC1发送的其他AMD PDU是否被正确接收。 Wherein, AMD PDU1, AMD PDU2, AMD PDU3 each contain the same respective segments of the SDU; AMD PDU3 includes piggybacked STATUS PDU, AMD PDU indicates whether a previously transmitted to RLC2 RLC1 is correctly received; STATUS PDU1 before represented RLC2 if other AMD PDU sent to RLC1 is received correctly. 具体流程假设如下: Assume the following specific process:

[0010] 1、RLC2的接收侧未能正确接收AMD PDU1,但正确接收到了AMDPDU2和AMD PDU3、 以及STATUS PDU1。 [0010] 1, the receiving side fails to correctly receive RLC2 AMD PDU1, but correctly received and to AMDPDU2 AMD PDU3, and STATUS PDU1.

[0011 ] 2、RLC2将AMD PDU2和AMD PDU3解码后放到接收&重传缓存内,经判断发现未能正确接收到AMD PDU1,因而构造STATUS PDU2传递给RLC2的发送侧。 [0011] 2, RLC2 AMD after the AMD PDU 3 and PDU2 decoding received into the buffer & retransmission, found judged not correctly received AMD PDUl, PDU2 the STATUS thus configured transmitting side is transmitted to the RLC2. 另外,RLC2的接收侧将接收到STATUS PDU1直接发送到RLC2的发送侧,由RLC2的发送侧立即根据该STATUS PDU1更新状态变量,例如vt_a。 Further, the receiving side RLC2 received STATUS PDU1 is directly transmitted to the transmission side RLC2 immediately updated based on the state variable STATUS PDU1 RLC2 transmission side, e.g. vt_a.

[0012] 由于AMD PDU1、AMD PDU2、AMD PDU3分别包含了同一个SDU的各个分段,因此,对于AMD PDU2和AMD PDU3,需等待正确接收到AMDPDU1后才能够进行去头&提取piggybacked STATUS PDU的操作。 After [0012] Since AMD PDU1, AMD PDU2, AMD PDU3 each containing respective segments of the same SDU, and therefore, for AMD PDU2 and AMD PDU3, wait can be correctly received AMDPDU1 deheader & piggybacked STATUS PDU is extracted operating.

[0013] 3、 RLC2的发送侧将STATUS PDU2发给RLC1的接收侧,请求RLC1重发AMD PDU1 。 [0013] 3, the transmitting side will RLC2 STATUS PDU2 RLC1 to the receiving side, the retransmission request RLC1 AMD PDU1. [0014] 4、 RLC1收到STATUS PDU2以后,确定AMD PDU1需要重传,并AMD PDU1放到发送侧的发送缓存中。 [0014] 4, after RLC1 received STATUS PDU2, AMD PDU1 is determined to be retransmitted, and AMD PDU1 transmission buffer into the transmission side.

[0015] 5、 RLC1的发送侧向RLC2的接收侧发送AMD PDU1以及其它的AMDPDU。 [0015] 5, the transmission side to the reception side transmits RLC2 of RLC1 AMD PDU1 and other AMDPDU.

[0016] 6、 RLC2的接收侧接收到RLC1的发送侧重传的AMD PDU1 ,解码后放到接收&重传 [0016] 6, the reception side received RLC2 RLC1 transmission focusing pass AMD PDU1, put the decoded received retransmission &

缓存内,并与之前缓存的AMD PDU2和AMD PDU3—起进行重组功能,然后提取出AMD PDU3内 Within the cache, and the cache before reassembly function of AMD PDU2 and AMD PDU3- play, then extracted within AMD PDU3

的piggybacked STATUS PDU,发送到RLC控制单元,RLC控制单元检测piggybacked STATUS The piggybacked STATUS PDU, transmitted to the RLC control unit, the control unit detects RLC piggybacked STATUS

PDU中的SUFI内容,发现与当前的状态变量不符,从而导致接收端的RLC复位。 SUFI content in the PDU, found inconsistent with the current state variable, leading to the receiving side RLC reset.

[0017] 可见,现有RLC中对STATUS PDU和piggybacked STATUS PDU的处理顺序会导致 [0017] visible, prior to the RLC STATUS PDU piggybacked STATUS PDU and the processing procedure will lead to

RLC的复位,从而在复位过程中会丢失来自上层的数据包,且复位过程中无法实现数据的传 RLC reset to drop packets from an upper layer during reset, and the reset process can not achieve data transmission

输,使得数据传输的速率会发生突变,可靠性较低。 Input, so that the data transmission rate of mutation occurs, the reliability is low.

发明内容 SUMMARY

[0018] 有鉴于此,本发明提供了一种RLC中的状态信息处理方法,能够降低RLC复位的概 [0018] Accordingly, the present invention provides a method for processing state information of the RLC, can be reduced almost RLC reset

率,避免数据传输速率的突变,从而提高数据传输的可靠性。 Rate, to avoid mutation data transfer rate, thereby improving the reliability of data transmission.

[0019] 本发明提供的一种RLC中的状态信息处理方法,包括: [0019] The RLC state information processing method of the present invention is provided, comprising:

[0020] 接收到AMD PDU时,判断接收到的AMD PDU中是否携带了piggybacked STATUS [0020] Upon receiving the AMD PDU, the AMD PDU received is determined whether it carries a piggybacked STATUS

PDU,如果是,则先提取该AMD PDU中携带的piggybacked STATUS PDU,然后根据所述 PDUs, if so, to extract piggybacked STATUS PDU carried in the AMD PDU, and then according to the

piggybacked STATUS PDU更新状态变量、再将该AMD PDU缓存;否则,直接将该AMD PDU缓存; piggybacked STATUS PDU update the state variables, then the AMD PDU buffer; otherwise, direct the AMD PDU buffer;

[0021] 接收到STATUS PDU时,根据所述STATUS PDU更新状态变量。 [0021] Upon receiving the STATUS PDU, STATUS PDU according to the updated state variable.

[0022] 所述AMD PDU对应的SDU接收完成后,该方法进一步包括: [0022] After the received AMD PDU if the corresponding SDU is completed, the method further comprising:

[0023] 将所有缓存的AMD PDU去RLC头; [0023] The all cached RLC AMD PDU to the head;

[0024] 将去RLC头后的AMD PDU进行重组后发送到上层。 [0024] The AMD PDU to the RLC header is sent to the upper layer after reorganization.

[0025] 由此可见,本发明中的RLC无需等待完整SDU的接收,即可提取出piggybackedSTATUS PDU进行状态变量的更新,保证对STATUS PDU和piggybacked STATUS PDU的处理顺序与接收顺序一致,避免先根据后接收到的STATUS PDU更新状态变量而导致的RLC复位,因而避免了数据传输速率的突变,提高了数据传输的可靠性。 [0025] Thus, in the present invention without waiting to receive a complete RLC SDU, the piggybackedSTATUS PDU to extract the state variables are updated, and the STATUS PDU to ensure consistent processing order they were received piggybacked STATUS PDU avoid The first after receiving the RLC sTATUS PDU updated state variable result reset, thus avoiding the mutation data transmission rate, to improve the reliability of data transmission.

附图说明 BRIEF DESCRIPTION

[0026] 图1为现有RLC模型的结构示意图。 [0026] FIG. 1 is a schematic structure of a conventional RLC model. [0027] 图2为现有RLC间的一传输过程示意图。 [0027] FIG. 2 is a schematic view of a conventional transfer between RLC. [0028] 图3为本发明RLC模型的结构示意图。 [0028] FIG. 3 is a schematic model of the structure of the RLC present invention.

[0029] 图4为本发明RLC中处理Piggybacked Status PDU以实现状态变量更新的流程示意图。 [0029] FIG. 4 schematic flowchart of implementing a state variable to update processing Piggybacked Status PDU RLC present invention.

[0030] 图5为本发明RLC间的一传输过程示意图。 [0030] Figure 5 a schematic diagram of the process of the present invention, transmission between RLC. 具体实施方式 Detailed ways

[0031] 为使本发明的目的、技术方案及优点更加清楚明白,以下参照附图并举实施例,对本发明进一步详细说明。 [0031] To make the objectives, technical solutions and advantages of the present invention will become more apparent, with reference to the accompanying drawings and the following embodiments, the present invention is further described in detail.

[0032] 在本发明中,当RLC接收到由包含piggybacked STATUS PDU的AMDPDU后,立即提取出该piggybacked STATUS PDU进行状态变量的更新,然后再将该AMD PDU缓存至接收缓冲和重传管理单元中,而无需等待完整SDU的接收完成,从而能够避免先根据后接收到的STATUS PDU更新状态变量而导致的RLC复位。 [0032] In the present invention, when the RLC is received by the piggybacked STATUS PDU containing AMDPDU immediately extract the piggybacked STATUS PDU state variables are updated, then the AMD PDU to a receiving buffer and a retransmission buffer management unit , without waiting for the completion of a complete SDU is received, it can be avoided according to the received sTATUS PDU after the updated state variable result of RLC reset.

[0033] 图3为本发明RLC模型的结构示意图。 [0033] FIG. 3 is a schematic model of the structure of the RLC present invention. 其中,如图3所示的发送侧与现有RLC模型相同。 Wherein the transmitting side shown in Figure 3 the same as the conventional RLC model.

[0034] 参见如图3所示的RLC,如果其接收侧接收到STATUS PDU,则按照如图1所示的现有方式,立即发送至该RLC的发送侧,由该RLC的发送侧根据该STATUS PDU更新状态变量, 并由发送侧的复用单元选择缓存在重传缓冲和管理单元内的对应AMD PDU进行重传,同时, 删除重传缓冲和管理单元中已被其他RLC正确接收的AMD PDU。 [0034] Referring RLC shown in Figure 3, if the receiving side receives STATUS PDU, according to the conventional method shown in Figure 1, immediately to the transmitting side of the RLC of the transmitting side of the RLC according to the updating a state variable sTATUS PDU by the multiplexing means to select the transmission side in the retransmission buffer of the corresponding AMD PDU in the buffer and retransmission management unit, and deleting the buffer and retransmission management unit has been correctly received by the other RLC AMD PDU.

[0035] 参见如图3所示的RLC,如果其接收侧接收到包含piggybacked STATUSPDU的AMD PDU,则该RLC的接收侧将该AMD PDU解密后,立即从该AMD PDU中提取出piggybacked STATUS PDU并发送至该RLC的发送侧,由发送侧立即进行状态变量的更新,然后再将该AMD PDU缓存至接收缓冲器;在完整的SDU接收完成后,再将接收缓冲器中的所有AMD PDU进行去RLC头,而不再进行提取piggybacked STATUS PDU的操作,直接重组后发送至上层。 [0035] Referring RLC shown in Figure 3, the receiving side comprising a piggybacked STATUSPDU AMD PDU if it receives the reception side, the rear of the RLC AMD PDU decrypted immediately extracted from the AMD PDU piggybacked STATUS PDU and out the RLC to the transmitting side, the transmitting side immediately updated by the state variable, and then the AMD PDU to a receiving buffer cache; after completion of reception of the complete SDUs, and then all received AMD PDU buffer to be RLC header extraction operation rather piggybacked STATUS PDU is transmitted to the upper layer directly after recombination. [0036] 图4为本发明RLC中处理Piggybacked Status PDU以实现状态变量更新的流程示意图。 [0036] FIG. 4 schematic flowchart of implementing a state variable to update processing Piggybacked Status PDU RLC present invention. 在发送端向接收端发送了AMD PDU之后,如图4所示,本发明在RLC中处理Piggybacked Status PDU的方法包括: After the transmitting end transmits the AMD PDU to a receiving end, shown in Figure 4, the processing method of the present invention Piggybacked Status PDU in the RLC comprises:

[0037] 步骤401,RLC的接收侧判断接收到的AMD PDU中是否携带了piggybacked STATUS PDU,如果是,则执行步骤402,否则执行步骤403。 [0037] Step 401, the receiving side judges RLC AMD PDU received whether it carries a piggybacked STATUS PDU, if yes, step 402 is performed, otherwise step 403 is performed.

[0038] 步骤402, RLC的接收侧提取AMD PDU中携带的piggybacked STATUSPDU,并执行步骤403。 [0038] Step 402, the reception side RLC extraction piggybacked STATUSPDU AMD PDU carried in, and step 403 is performed.

[0039] 本步骤中,由RLC的接收侧提取AMD PDU中携带的piggybackedSTATUS PDU之后, 即可立即发送至该RLC的发送侧,由该RLC的发送侧更新状态变量,并将重传缓冲&管理模土央中与该piggybacked STATUS PDU对应的AMD PDU的重传。 After [0039] In this step, the extracting piggybackedSTATUS PDU AMD PDU carried by the receiving side of the RLC, can be immediately sent to the transmission side of RLC, the RLC of the transmitting side updates the state variable, and the retransmission buffer management & soil in the central mold piggybacked STATUS PDU corresponding AMD PDU retransmission. [0040] 步骤403, RLC的接收侧缓存该解密得到的AMD PDU。 [0040] Step 403, the reception side RLC buffer of decrypted AMD PDU. [0041] 本步骤中,解密得到的AMD PDU可以缓存在接收缓冲器中。 [0041] In this step, the decrypted AMD PDU in the reception buffer may be cached. [0042] 至此,本流程结束。 [0042] Thus, the process ends.

[0043] 上述流程中,当一个完整SDU的接收完成之后,在RLC的接收侧将所有缓存的AMD PDU进行去RLC头的操作,而不再进行提取piggybackedSTATUS PDU的操作,然后将去RLC 头操作后的AMD PDU进行重组后发送到上层。 [0043] In the above scheme, after the completion of a complete SDU is received, the receiving side of the RLC AMD PDU all buffered RLC operates to head, rather than extraction piggybackedSTATUS PDU operation, then the operation will go to RLC header after the AMD PDU sent to the upper layer after restructuring.

[0044] 在执行上述流程的同时,如果收到STATUS PDU,则采取与现有技术一致的方式进行处理。 [0044] While performing the above process, if the received STATUS PDU, and processing is taken consistent with the prior art method.

[0045] 可见,由于RLC无需等待完整SDU的接收即可提取出piggybackedSTATUS PDU进行状态变量的更新,因而能够保证对STATUS PDU和piggybacked STATUS PDU的处理顺序与接收顺序一致,从而能够避免先根据后接收到的STATUS PDU更新状态变量而导致的RLC 复位,因而避免了数据传输速率的突变,提高了数据传输的可靠性。 [0045] visible, since without waiting to receive a complete RLC SDU is extracted piggybackedSTATUS PDU to update the state variables, it is possible to ensure consistent treatment of the STATUS PDU and the order they were received piggybacked STATUS PDU's, can be avoided according to the received first to update the state variable sTATUS PDU RLC reset caused, thus avoiding the mutation data transmission rate, to improve the reliability of data transmission. [0046] 下面,再对上述流程进行举例说明: [0046] Next, the above processes further exemplified:

[0047] 参见图5,仍假设RLC1的发送侧先后向RLC2的接收侧发送了AMDPDU1、AMD PDU2、 AMD PDU3、以及STATUS PDU1。 [0047] Referring to Figure 5, assume that the sending side is still RLC1 successively transmitted to the receiving side RLC2 of AMDPDU1, AMD PDU2, AMD PDU3, and STATUS PDU1. 其中,AMD PDU1、AMD PDU2、AMD PDU3分别包含了同一个SDU 的各个分段;AMD PDU3包含了piggybacked STATUS PDU,表示RLC2之前向RLC1发送的某个AMD PDU是否被正确接收;STATUS PDUl表示RLC2之前向RLC1发送的其他AMD PDU是否被正确接收。 Wherein, AMD PDU1, AMD PDU2, AMD PDU3 each contain the same respective segments of the SDU; AMD PDU3 includes piggybacked STATUS PDU, AMD PDU indicates whether a previously transmitted to RLC2 RLC1 is correctly received; STATUS PDUl represents prior RLC2 if other AMD PDU sent to RLC1 is received correctly.

[0048] 1 、RLC2的接收侧未能正确接收AMD PDUl ,但正确接收到了AMDPDU2和AMD PDU3、 以及STATUS PDUl。 [0048] 1, the receiving side fails to correctly receive RLC2 AMD PDUl, but correctly received and to AMDPDU2 AMD PDU3, and STATUS PDUl.

[0049] 2、RLC2将AMD PDU2和AMD PDU3解码后,经判断发现未能正确接收到AMD PDU1,因而构造STATUS PDU2传递给RLC2的发送侧,并从AMD PDU3中提取出piggybacked STATUS PDU,并发送至RLC2的发送侧,由RLC2的发送侧根据该piggybacked STATUS PDU更新状态变量。 [0049] 2, RLC2 the AMD PDU 3 and PDU2 AMD after decoding, is judged not correctly received AMD found PDUl, PDU2 the STATUS thus configured RLC2 transmitted to the transmission side and extracts from the AMD PDU 3 out piggybacked STATUS PDU, and transmitted RLC2 to the transmission side, the transmission side RLC2 based on the updated state variable piggybacked sTATUS PDU. 然后,RLC2的接收侧将解码后的AMD PDU2和AMD PDU3放到接收&重传缓存内。 Then, the receiving side will RLC2 AMD PDU2 and AMD PDU3 decoded into the reception & retransmission buffer. [0050] 另夕卜,RLC2的接收侧将接收到STATUS PDUl直接发送到RLC2的发送侧,由RLC2的发送侧立即根据该STATUS PDUl再次更新状态变量。 [0050] Another Bu Xi, RLC2 the receiving side the received STATUS PDUl RLC2 directly transmitted to the transmission side, the transmission side RLC2 updated based on the state variable STATUS PDUl again immediately. 此时的STATUS PDUl不会与之前更新后状态变量不符,从而不会导致作为发送端的RLC复位。 At this time, STATUS PDUl not inconsistent with the state variables updated before, so as not to cause a transmission side RLC reset.

[0051] 3、 RLC2的发送侧将STATUS PDU2发给RLC1的接收侧,请求RLC1重发AMD PDUl 。 [0051] 3, the transmitting side will RLC2 STATUS PDU2 RLC1 to the receiving side, the retransmission request RLC1 AMD PDUl. [0052] 4、 RLC1收到STATUS PDU2以后,确定AMD PDUl需要重传,并AMD PDUl放到发送侧的发送缓存中。 [0052] 4, after RLC1 received STATUS PDU2, is determined to be retransmitted AMD PDUl, and AMD PDUl transmission buffer into the transmission side.

[0053] 5、 RLC1的发送侧向RLC2的接收侧发送AMD PDUl以及其它的AMDPDU。 [0053] 5, the transmission side to the reception side transmits RLC2 of RLC1 AMD PDUl and other AMDPDU.

[0054] 6、 RLC2的接收侧接收到RLC1的发送侧重传的AMD PDUl ,解码后放到接收&重传 [0054] 6, the reception side received RLC2 RLC1 transmission focusing pass AMD PDUl, decoded into the received retransmission &

缓存内,并与之前缓存的AMD PDU2和AMD PDU3 —起进行重组功能。 Within the cache, and the cache of previous AMD PDU2 and AMD PDU3 - from restructuring functions.

[0055] 可见,由于提取piggybacked STATUS PDU的过程无需等待完整SDU接收完成后再执行,因而不会导致RLC的复位。 [0055] visible, since the extraction process piggybacked STATUS PDU is received without waiting for completion of execution after the complete SDU, and thus will not cause RLC reset.

[0056] 以上所述仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 [0056] The foregoing is only preferred embodiments of the present invention but are not intended to limit the scope of the present invention. 凡在本发明的精神和原则之内,所作的任何修改、等同替换以及改进等,均应包含在本发明的保护范围之内。 Within the spirit and principle of the present invention, any modifications, equivalent substitutions and improvements should be included within the scope of the present invention.

Claims (2)

  1. 一种RLC中的状态信息处理方法,其特征在于,该方法包括:接收到AMD PDU时,判断接收到的AMD PDU中是否携带了piggybackedSTATUS PDU,如果是,则先提取该AMD PDU中携带的piggybacked STATUSPDU,然后根据所述piggybacked STATUS PDU更新状态变量、再将该AMDPDU缓存;否则,直接将该AMD PDU缓存;接收到STATUS PDU时,根据所述STATUS PDU更新状态变量。 State information processing method of the RLC, characterized in that, the method comprising: receiving the AMD PDU, the AMD PDU received is determined whether it carries a piggybackedSTATUS PDU, if so, extracts the first AMD PDU piggybacked carried the STATUSPDU, then piggybacked sTATUS PDU in accordance with the updated state variable, then the cache AMDPDU; otherwise, the direct AMD PDU buffer; upon receiving the sTATUS PDU, sTATUS PDU according to the updated state variable.
  2. 2. 如权利要求1所述的方法,其特征在于,所述AMD PDU对应的SDU接收完成后,该方法进一步包括:将所有缓存的AMD PDU去RLC头; 将去RLC头后的AMD PDU进行重组后发送到上层。 2. The method according to claim 1, characterized in that, after the SDU corresponding to the received AMD PDU is completed, the method further comprising: caching all AMD PDU to the RLC header; AMD PDU to the RLC header will be the recombinant sent to the upper layer.
CN 200710179963 2007-12-20 2007-12-20 State information processing method in wireless link control entity CN101183916B (en)

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US6978413B2 (en) 2001-11-14 2005-12-20 Lg Electronics Inc. Method for coding status PDU in AM RLC entity of radio communication system
CN1864363A (en) 2003-10-07 2006-11-15 艾利森电话股份有限公司 Medium access control priority-based scheduling for data units in a data flow

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