CN100446454C - Method for transmitting data from RLC layer in radio communication system - Google Patents

Method for transmitting data from RLC layer in radio communication system Download PDF

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CN100446454C
CN100446454C CN 200510082490 CN200510082490A CN100446454C CN 100446454 C CN100446454 C CN 100446454C CN 200510082490 CN200510082490 CN 200510082490 CN 200510082490 A CN200510082490 A CN 200510082490A CN 100446454 C CN100446454 C CN 100446454C
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method
transmitting
data
rlc
layer
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CN 200510082490
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Chinese (zh)
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CN1716839A (en )
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吕运荣
李承俊
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Lg电子株式会社
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/14Flow control between communication endpoints using intermediate storage

Abstract

公开了一种在无线电通信系统中发送数据的方法,包括以下步骤:将一个从上层接收的服务数据单元SDU转换成协议数据单元PDU;丢弃至少一个服务数据单元SDU;和通知接收方丢弃的至少一个服务数据单元SDU的部分丢弃信息,其中该部分丢弃信息是用于在接收方移动接收窗口的最小信息。 Discloses a method of transmitting data in a radio communication system, comprising the steps of: a transition from an upper layer service data unit SDU received protocol data units into PDUs; at least one discarded SDU service data unit; and a notification receiver discards at least part of a service data unit SDU discard information, wherein the portion of the minimum information is discarded at the receiving side for moving the receiving window.

Description

无线电通信系统中从无线电链路控制层发送数据的方法本申请是申请号为01141519.3的发明名称为"用于在无线电通信系统中从无线电链路控制层发送数据的方法"的分案申请。 The method of radio communication system for transmitting data from a radio link control layer of the present application is a continuation of Application No. 01141519.3 entitled "is used in a radio communication system transmitting data from a method of controlling a radio link layer," the divisional application. 技术领域本发明涉及一种用于在一个无线电通信系统中从RLC层发送数据的方法,具体涉及一种用于在一个具有RLC层的无线电通信系统中执行SDU丢弃功能的方法。 Technical Field The present invention relates to a method in a radio communication system for transmitting data from the RLC layer for performing particularly relates to a method for the SDU discard function in a radio communication system having the RLC layer. 背景技术图1说明一个一般无线电通信系统的体系结构图,其中无线电接口协议的体系结构符合欧洲IMT-2000UMTS (通用移动电信系统)的一个无线电接入网络标准。 BACKGROUND OF THE INVENTION FIG 1 illustrates a general architecture of a radio communication system, wherein the radio interface protocol architecture in accordance with European IMT-2000UMTS (Universal Mobile Telecommunications System) is a radio access network standard. 参见图1,作为3GPP的一个第二层的在无线电通信系统中的无线电链路控制(之后縮写为RLC)层是一个控制一个数据链路的协议层。 Referring to Figure 1, a radio link control in the radio communication system of a second layer of 3GPP (after abbreviated RLC) layer is a protocol layer controlling a data link. 而且,RLC层对应于OSI 7层模型的第二层。 Further, RLC layer corresponding to the second layer of the OSI 7 layers model. RLC层的所有实体由一个作为一个上层的无线电资源控制(之后縮写为RRC)层体现。 All entities of the RLC layer as an upper layer of a radio resource control (after abbreviated RRC) layer embodied. 在一个用户设备和UTRAN(UMTS陆地无线电接入网络)之间的一个无线电接口协议水平地包括一个物理层, 一个数据链路层和一个网络层。 In a radio interface protocol horizontally between (UMTS Terrestrial Radio Access Network) and UTRAN a user equipment comprises a physical layer, a data link layer and a network layer. 垂直地, 一个协议体系结构被分为一个用于发送控制信号(信令)的控制平面和一个用于发送数据信息的用户平面。 Vertically, a protocol architecture is divided into a user plane a control plane for transmitting control signals (signaling) and for transmitting data information. 特别地,在图1中的控制平面上存在作为一个第三层的一个RRC 层,作为第二层的一个RLC层和一个介质访问控制(之后縮写为MAC) 层,和作为一个第一层的一个物理层。 In particular, there is a third layer as a RRC layer control plane in FIG. 1, as an RLC layer and a second medium access control layer (after abbreviated MAC) layer, as a first layer, and a physical layer. 而且,在用户平面中,RLC和MAC层存在于第二层,物理层存在于第一层。 Further, in the user plane, the RLC and MAC layers present in the second layer, the first layer is present in the physical layer. 物理层使用各种无线电发送技术为上层提供信息传送服务,并通过传输信道被连接到位于上层的MAC层,其中MAC和物理层之间的数据通过传输信道传输。 The physical layer using various radio transmission techniques to provide information transfer service to an upper layer, and is connected to the MAC layer located in the upper through a transmission channel, wherein the data between the MAC and the physical layer through the transport channel transmissions. 传输信道被分为一个为用户设备独占使用的专用传输信道,和一个为各个用户设备所公用的公用传输信道。 Transport channel is divided into a device for the exclusive use of the user dedicated transport channel, and each user equipment a common transmission channel is common. MAC层提供无线电资源的再分配服务和MAC参数。 And MAC parameter reallocation services MAC layer provides a radio resource. 这种服务要求无线电资源的再分配或者MAC参数的改变。 This service requires a change or a MAC parameter reallocation of radio resources. 通过一个逻辑信道, MAC层被连接到RLC层上,并且按照发送信息的种类提供各种逻辑信道。 Through a logical channel, the MAC layer is connected to the RLC layer, and provides various logical channels according to the type of information transmitted. 通常,当发送控制平面的信息时使用控制信道,而业务信道被用于发送用户平面的信息。 Typically, the channel is used when the information transmission control plane, user plane information and a traffic channel is used to transmit. RLC层提供一个无线电链路的建立和释放,并执行与从用户平面的上层下来的RLC服务数据单元(以后縮写为SDU)相关的分段和级连功能。 The RLC layer provides the establishment and release of a radio link, and performs segmentation and related to the function cascade down from the upper layer user plane RLC service data unit (hereinafter abbreviated SDU). RLCSDU的大小被调节为符合RLC层中的处理能力,然后在SDU上加上报头信息以便形成一个协议数据单元(之后縮写为PDU) 之后被发送到MAC层。 After RLCSDU size is adjusted to conform to the RLC layer processing capabilities, and then add the header information of the SDU in order to form a protocol data unit (later abbreviated PDU) is transmitted to the MAC layer. 在这种情况下,用于存储从上层下来的RLC SDU或者RLC PDU的一个RLC缓冲器存在于RLC层之中。 A RLC buffer of the RLC SDU or the RLC PDU in this case, for storing down from the upper layer exists in the RLC. RRC层提供一个用于向位于随机区域的所有用户设备广播信息的信息广播服务。 The RRC layer provides an information broadcast service for the broadcast information to all user equipments located in the random region. 而且,RRC层负责用于在第三层中的控制信号交换的控制平面信号处理,从而具有在用户设备和UTRAN之间建立、维持和释放一个无线电资源的功能。 Moreover, the RRC layer is responsible for the control plane signal processing for a control signal exchanged in the third layer so as to have established between the user equipment and the UTRAN, maintaining and releasing a radio resource functions. 特别地,RRC层还具有建立,维持和释放一个无线电访问集合信道(radio access bearer)的功能以及分配、重新布置和释放用于无线电资源访问所需的无线电资源的功能。 In particular, the RRC layer also has to establish, maintain and release a radio access bearer (radio access bearer) and the distribution function, rearrangement and release functions of the radio resources required for radio access resource. 在这种情况下,无线电访问集合信道表示用于用户设备和UTRAN之间的数据传输的由第二层提供的服务。 In this case, the radio access bearer service for showing data transmission between the user equipment and the UTRAN is provided by the second layer. 即,'建立一个无线电访问集合信道' 表示规定了用来提供一个特定服务所需的一个协议层和一个信道的特性,并且建立了各自的特定参数和操作方法。 That is, 'to establish a radio access bearer' represents the predetermined characteristics required for providing a specific service a protocol layer and a channel, and establish respective specific parameters and operation methods. 之后是RLC层的详细说明。 After the RLC layer is described in detail. 根据由RLC层执行的功能,存在三种模式,如透明模式,非确认模式和确认模式。 The function performed by the RLC layer, there are three modes, transparent mode, an unacknowledged mode and an acknowledged mode. 首先,当RLC以透明模式操作时,在来自上层的RLC SDU上不添加任何报头信息。 First, when operating in a transparent mode RLC, do not add any header information in the RLC SDU from an upper layer. 通常,分段和重组不用于透明模式。 Typically, segmentation and reassembly is not used for transparent mode. 但是,如果需要,当建立(配置)了无线电访问集合信道时,确定是否使用了分段和重组功能。 However, if desired, when the setup (configuration) of a radio access bearer, determining whether the segmentation and reassembly function. 第二,当RLC以非确认模式操作时,即使RLC PDU的发送失败也不支持再发送。 Second, when operating in unacknowledged mode RLC, the transmission failure even if the RLC PDU does not support retransmission. 因此,当在发送过程中数据丢失或者发生问题时, 一个接收方不要求再发送。 Thus, when data is lost or a problem occurs during transmission, the receiver does not require a retransmission. 相反,接收方丢弃相关数据。 Instead, the receiver discards the relevant data. 使用非确认模式的服务是蜂房式小区广播服务,使用IP网络的语音服务(通过IP 的语音服务),诸如此类。 Using unacknowledged mode is a cellular service cell broadcast service, a voice service using an IP network (Voice over IP), and the like. 最后,当RLC以确认模式操作时,当一个分组的发送失败时,支持再发送。 Finally, when operating in RLC acknowledged mode, when a packet transmission failure, to support retransmission. 即,发送方的RLC层从接收方接收一个能够判断发送是否成功的状态信息,然后再次发送所要求再发送的RLCPDU。 That is, the transmitting side RLC layer receives a transmission success can be determined from the status information of the receiving party, and then re-transmitted retransmission RLCPDU required. 在以确认模式操作的过程中,如果需要,由RLC层从上层接收的RLC SDU通过分段/级连被分为预先定义的大小,然后变成添加了包括序号在内的报头信息的RLC PDU。 In the process to confirm the mode of operation, if necessary, by the RLC layer receives the RLC SDUs from the upper layer through the segmentation / concatenation it is divided into a predefined size, and then added into the header information including a sequence number of the RLC PDU including . 这些RLC PDU按照序列号被存储到RLC缓冲器中。 The RLC PDU according to the sequence number is stored in the RLC buffer. 存储的等于MAC层所要求的确切数量的RLC PDU被传送到MAC层,其中,传送基本是按照序号的顺序执行的。 MAC layer of the memory is equal to the desired number of exact RLC PDU transferred to the MAC layer, wherein the transmitting is performed substantially in the order of numbers. 从发送方的RLC 层,根据序号的顺序发送一个第一-发送的RLCPDU。 , A first transmission from the sender RLC layer according to the sequence numbers - RLCPDU transmitted. 因此,接收方的RLC层检查接收的序号以便要求发送方的RLC层再次发送发送-失败的数据。 Accordingly, the receiving side RLC layer checks the received RLC layer sequence number so as to require the sender to retransmit the transmission - failed data. 当已经下来到达对应于发送方的无线电通信系统中的RLC层的RLC SDU (服务数据单元)没有被发送到对应于接收方的另一个无线电通信系统时,发送方需要丢弃SDU以便防止发送缓冲器超载。 When reaching down has a radio communication system corresponding to the transmitting side in the RLC layer of the RLC SDU (service data unit) is not sent to another radio communication system corresponding to the receiving side, the transmitting side needs to be discarded SDU so as to prevent the transmission buffer overload. RLC层使用一种丢弃SDU (服务数据单元)的功能,该功能在RRC层中也得到体现。 Discarding the RLC layer uses a function (service data unit) of SDU, the RRC layer function is also reflected. 有两种执行SDU丢弃功能的方法。 There are two ways to execute SDU discard function. 第一种是一种基于时间的SDU丢弃方法。 The first is a time-based SDU discard method. g卩,使用一个计时器来执行基于时间的SDU丢弃方法。 g Jie, using a timer-based SDU discard time to perform a method. 第二种SDU丢弃方法依赖于限制发送次数。 The second method relies on the SDU discard limit transmission times. 第一种方法测量SDU停留的时间,而第二种方法测量PDU 被再发送多少次。 The first method of measuring time SDU stay, while the second method of measuring how many times the PDU is re-sent. 在这种情况下,待丢弃的目标是SDU。 In this case, the goal is to be discarded SDU. 对于基于时间的SDU丢弃方法,当RLC SDU从发送方的上层下来到RLC层时,驱动一个计算每个RLC SDU停留在RLC层中的持续时间的丢弃计时器。 For time-based SDU discard method, when the RLC SDU down from the upper layer to the RLC layer of the transmitting side, calculating a discard timer drive duration of each RLC SDU in the RLC layer of the stay. 之后,当直到设置的丢弃-计时器的时间期满时对应的RLC SDU 也没有被发送到接收方时,或者即使对应的RLCSDU被发送到接收方而一个ACK (确认)信号没有被接收方接收到时,对应于接收方的无线电通信系统丢弃包括对应的SDU在内的所有RLC PDU。 Thereafter, when the set is discarded until - the time when the corresponding timer time expires RLC SDU has not been transmitted to the receiving side, or even if the corresponding RLCSDU is sent to the receiver and an ACK (acknowledgment) signal is not received by the recipient when the radio communication system corresponding to the receiving side discards all RLC PDU including a SDU corresponding to include. 另一方面,如果一个不应被丢弃的RLC SDU和应被丢弃的RLC SDU被包括在同一个RLC PDU中,发送方将不丢弃对应的RLC PDU。 On the other hand, if a discarded RLC SDU should be discarded and the RLC SDU is included in one RLC PDU, the sender will not discard the corresponding RLC PDU. 下面将解释依赖于限制发送次数的第二种SDU丢弃方法。 Will be explained below dependent on a second SDU discard method limits the number of transmissions. 发送方的RLC层对发往接收方的各自的RLC PDU的发送次数进行计数。 The RLC layer of the sender of the number of transmissions sent to the respective receiver counting the RLC PDU. 即, 一个计算各自的RLCPDU的发送次数的计数器VT-DAT 被启动操作。 That is, a number of transmissions of the respective calculated RLCPDU counter VT-DAT operation is started. 每次当一个由计数器VT-DAT负责的RLC PDU被发送到接收方时,计数器VT-DAT把计数值加1。 Each time a charge of by the counter VT-DAT RLC PDU is transmitted to the receiving side, the VT-DAT counter count is incremented. 某个特定的RLC PDU的可能发送的次数被定义为一个最大变量MaxDAT。 It may send a number of specific RLC PDU is defined as a maximum variable MaxDAT. 如果计数器VT-DAT的计数值等于或者高于最大变量MaxDAT,包括在对应的RLC PDU中的SDU和在对应的RLC PDU之前已经被发送的所有的RLC SDU被丢弃。 If the count value of the counter VT-DAT is equal to or higher than the maximum variable MaxDAT, including the corresponding SDU in the RLC PDU and RLC SDU before all the corresponding RLC PDU has been transmitted is discarded. 图2A表示一个用于解释一种根据现有技术向接收方发送由基于时间的RLC SDU丢弃方法丢弃的RLC SDU的丢弃信息的方法的示意图。 2A shows a schematic diagram for explaining a method for discarding one kind of information by time-based method of the discarded RLC SDU discard the RLC SDU is transmitted to the receiver according to the prior art. 参见图2A,RLC层从上层接收RLC SDU0,RLC SDU1,RLC SDU2 和RLCSDU3,把它们转换成RLCPDU形式,并把RLCPDU形式依次发送到接收方。 Referring to FIG 2A, RLC layer receives the RLC SDU0, RLC SDU1, RLC SDU2 and RLCSDU3 from an upper layer, converts them into RLCPDU form, and the form of the RLCPDU sequentially transmitted to the receiving side. 在这种情况下,RLC SDU是由上层规定的数据单元。 In this case, RLC SDU is a data unit defined by the upper layer. 如图2A所示的各自的SDU被装载在至少一个RLC PDU上从而被发送到接收方。 Each SDU shown in Figure 2A is mounted on at least one side so as to be transmitted to the receiving RLC the PDU. 在图2A中,SDU0, SDU1, SDU2和SDU3分别地包括PDU0/PDU1 , PDU1, PDU1/PDU2/PDU3和PDU3至U PDU7。 In FIG. 2A, SDU0, SDU1, SDU2, and SDU3 respectively comprise PDU0 / PDU1, PDU1, PDU1 / PDU2 / PDU3 and PDU3 to U PDU7. 如图2A所示的序列号SN0到7,分别地被依次给于各个PDU, PDU0至(jPDU7。因此,标有序号的PDU被发送往接收方。参见图2A,在使SDUO到SDU3能够停留在发送方的预设时间期满后,PDU0和PDU1被发送到接收方,但是PDU2和PDU3在发送过程中丢失。同时,PDU4到PDU7还没有从发送方被发送到接收方。如上述说明所提及的, 一旦对SDUO到SDU3的预设时间期满, 发送方丢弃对应于内部发送缓冲器中的SDUO到SDU3的PDUO到PDU7,以便向接收方传送对应的丢弃信息,丢弃信息被装载到MRW SUFI (移动接收窗口超级字段)上。图2B表示在图2A的情况下发送的MRW SUFI的格式和参数。10参见图2B,参数LENGTH用4比特来构建,其表示丢弃的SDU 的个数。其他参数SN一MRW1到SN一MRW2分别表示PDU的各个序号。 参数SN—MRWj(il, 2, 3和4)中的每一个代表包括每个丢弃的SDU 的结尾在内的对应PDU的序号。参数SN_MRW《i=l, As shown in FIG. 2A serial number SN0 to 7, respectively, are sequentially given to each PDU, PDU0 to (jPDU7. Thus, an order number of the PDU is transmitted to the receiving side. Referring to FIG 2A, in the SDU3 can rest so SDUO after expiration of the preset time the sender, PDU0 PDU1 and is sent to the receiver, but PDU2 and PDU3 is lost during transmission. at the same time, PDU4 to PDU7 not sent from the sender to the receiver. as the above description mentioned, upon expiration of a preset time to SDUO SDU3, the sender discards the transmission buffer corresponding to the interior of the PDUO SDUO to SDU3 to PDU7, corresponding to discard information is transmitted to the receiving side discards the information is loaded into the the MRW SUFI (move receiving window super field). Figure 2B shows the transmitted MRW SUFI in FIG. 2A in the case of the format and parameters of .10 2B, the parameter LENGTH is constructed with 4 bits, which represents the number of discarded SDU other parameters of a SN to SN MRW1 MRW2 denote a serial number of each PDU. parameters SN-MRWj (il, 2, 3, and 4) each comprising a representative of each end of the SDU discarded PDU including a sequence number corresponding to parameter SN_MRW "i = l, 2, 3和4)中的每一个用12比特来构建。 2, each constructed by a 12-bit 3 and 4). 包含12比特的SN—MRWi表示在具有属于第i个丢弃的SDU的下—个SDU的数据的一个或者多个PDU中的第一个PDU的序号SN。 SN-MRWi comprising 12 bits is represented in the SDU belonging to the i-th having discarded the - sequence number SN of a first PDU of one or more data SDU in the PDU. 即,考虑到每一个SDU单元,SN_MRW《i是一个正整数)是命令具有SDU的数据的第一个PDU恰在丢弃的SDU之后被发送的信息。 That is, taking into account each SDU unit, SN_MRW "i is a positive integer) is a first message having a command PDUs of SDU data is transmitted just after the discarded SDU. 如图2B所示,表示丢弃的SDU的个数的MRW SUFI的参数LENGTH由"0100"代表。 2B, the number of discarded SDU indicates the MRW SUFI by the LENGTH parameter "0100" represents. 同时,因为SDU0的一个结尾属于PDU1 , SN—MRW,由"1"代表,"1"是PDU1的一个序号。 Meanwhile, since a part of the end SDU0 PDU1, SN-MRW, a "1", "1" is a number of PDU1. 因为SDU1的—个结尾属于PDU1, S1SLMRW2由"1"代表,"1"是PDU1的序号。 Because of SDU1 - one end part of PDU1, S1SLMRW2 by a "1", "1" is the number of PDU1. 因为SDU2的一个结尾属于PDU3, SN—MRW3由"3"代表,"3"是PDU3的序号。 Since a part of the end of the SDU2 PDU3, SN-MRW3 from "3" represents "3" is the number of PDU3. 因为SDU3的一个结尾属于PDU7, SN—MRW4由"7" 代表,"7"是PDU7的序号。 Since a part of the end of the SDU3 PDU7, SN-MRW4 from "7" represents, "7" is the number of PDU7. 包含4比特的Nlength字段表示具有一个序号SN—MRWlength的PDU中的数据,该数据定义什么样的SDU将被丢弃。 Nlength field contains 4 bits of data indicating the PDU having a sequence number SN-MRWlength, which defines what kind of data will be discarded SDU. 这表示如果多个SDU无法进入一个PDU,什么样的数据将被丢弃。 This means that if multiple SDU can not enter a PDU, what kind of data will be discarded. 例如,当Nlength的值被设置为"0"时,具有序号SN—MRWLENGTH的PDU表明对应于SDU的数据将不被丢弃。 For example, when the value is set to Nlength "0", PDU having a sequence number SN-MRWLENGTH indicates data corresponding to the SDU will not be discarded. 当NLENGTH的值被设置为"2"时,丢弃对应于正数第二个SDU的数据,具有序号SN—MRWLENGTH的PDU中的数据被发送/接收。 When the value NLENGTH is set to "2", to discard data corresponding to the positive second SDU, PDU data having the sequence number in the SN-MRWLENGTH be transmitted / received. 在图2A中,Nlength由"0001"代表。 In FIG. 2A, Nlength from "0001" represents. 接收方,其从发送方接收如图2B中所示的作为丢弃信息的MRW SUFI,丢弃对应于来自一个内部接收缓冲器的SDUO到SDU3的PDUO 到PDU7,并移动接收窗口。 Receiver, which receives from the transmission side as shown in FIG. 2B discard information of MRW SUFI, dropped from a corresponding SDUO internal receive buffer to the SDU3 of PDUO PDU7, and moves the receiving window. 之后,接收方向对应于发送方的无线电通信系统发送一个确认信号,该信号命令来自具有一个序号SN"8"的PDU的MRW一ACK数据被发送到发送方。 After receiving a direction corresponding to a radio communication system transmitting party sends a confirmation signal from the command signal having a sequence number SN "8" of a MRW ACK PDU of data is sent to the sender. 已经从接收方接收了信号的发送方确认对应于待丢弃的SDU的PDU0到PDU7被接收方成功地丢弃,接着开始向接收方发送对应于序号SN "8"的PDU等等。 Signal has been received from the recipient to the sender to confirm PDU0 PDU7 successfully discarded by the receiver corresponding to the SDU to be discarded, then starts sending to the recipient corresponding to the sequence number SN PDU "8", and the like. 不幸地是,现有技术有以下问题或者缺点。 Unfortunately, the prior art has the following problems or disadvantages. 当由计时器预先设置的时间期满或者超过由计数器预先设置的个数,并且将丢弃所有与发送相关的SDU时,向接收方发送与丢弃的SDU 有关的全部信息。 When the time previously set by a timer expires, or the number of the counter exceeds a pre-set, and discards all associated SDU transmitted, all the information transmitted to the receiver and discarded SDU related. 如以上说明所提及,通知每个丢弃的SDU的结束点的对应PDU的序号包含12比特,因此如果丢弃的SDU过多,则发送方的发送效率大大降低。 As mentioned above and described, the serial number of each PDU notification corresponding to the end point of the SDU discarded comprising 12 bits, if too many discarded SDU, the transmission efficiency of the transmission side is greatly reduced. 即,丢弃信息的发送是使下一个接收窗口与下一个发送窗口重合。 I.e., transmits discard information is to next receive window coincides with the next transmission window. 但是,不必要地向接收方发送了关于全部丢弃的SDU的所有信息,即使向接收方通知仅仅有关留在内部发送缓冲器中的一系列SDU的开始和结束点的丢弃信息就足够了,其中, 一系列SDU的开始和结束点是已知的并且这些SDU尚未被发送。 However, unnecessarily transmitted to the receiver all the information about all the discarded SDU, even if only notifies the recipient about the left inside the transmission range of SDU discard information of start and end points of the buffer is sufficient, wherein , a series of SDU start and end points are known and the SDU has not yet been sent. 因此,浪费了无线电资源。 Therefore, the waste of radio resources. 而且,如果假定图2A中的PDU3从来没有被发送过,当根据现有技术的基于时间的丢弃方法,SDU0到SDU3停留在发送缓冲器中的时间超过一个预定时间时,发送方的RLC层丢弃SDU0到SDU3,并向RLC层发送上述信息。 Further, if the assumed in FIG. 2A PDU3 never been sent before, when the time-based discarded when SDU0 SDU3 residence time in the transmission buffer exceeds a predetermined time, the RLC layer discard the sender according to the prior art SDU0 the SDU3, and the RLC layer transmits the information. 但是,关于SDU3的信息(SDU3从来没有被试图发送,因此接收方接收到它的概率为零)被发送到接收方,从而也浪费了无线电资源。 However, information about the SDU3 (SDU3 never been trying to send, the receiving party receives its probability is zero) is sent to the receiver, and thus a waste of radio resources. 发明内容因此,本发明旨在提供一种用于在无线电通信系统中从一个RLC 层发送数据的方法,该方法实质上消除了由于现有技术的局限和缺点而造成的一个或更多个问题。 SUMMARY OF THE INVENTION Accordingly, the present invention seeks to provide one or more of the problems for use in a radio communication system from a method for transmitting data in the RLC layer, which substantially obviates the limitations and disadvantages of the prior art caused by . 本发明的一个目的是提供一种用于在一个无线电通信系统中从一个RLC层发送数据的方法,该方法使得可以高效地使用无线电资源。 An object of the present invention is to provide a method for a radio communication system from a method for transmitting data in the RLC layer, the method makes it possible to efficiently use radio resources. 本发明的另一个目的是提供一种用于在无线电通信系统中从一个RLC层发送数据的方法,该方法使得可以改善无线电通信系统的发送效率。 Another object of the present invention is to provide a radio communication system for a method for the RLC layer from transmitting data, the method makes it possible to improve the transmission efficiency of the radio communication system. 本发明的其他优点、目的和特征将部分地在以下说明中提出,部分地可以由本领域技术人员在审看了以下说明后理解或者可以通过本发明的实践获得。 Other advantages, objects and features of the invention will be set forth in part in the following description, partly be appreciated by those skilled in the art after the following description or read the trial may be obtained by practice of the invention. 本发明的目的和其他优点可以通过所写的说明和权利要求以及附图中特别指出的方式实现和获得。 The objectives and other advantages of the invention may be realized and attained by the written description and claims and the accompanying drawings is particularly pointed out. 为了实现这些目的和其他优点,根据本发明的目的,如在此所体现和广义说明的,根据本发明一种在无线电通信系统中从以确认模式操作的RLC层发送数据的方法,包括以下步骤:在发送缓冲器中存储从上层接收的服务数据单元SDU;将来自上层的服务数据单元转换成要发送给接收方的协议数据单元PDU;丢弃至少一个服务数据单元; 和将丢弃的至少一个服务数据单元的丢弃信息发送给接收方;其特征在于:检查是否配置了MRW发送设置指示符;以及如果配置了该MRW 发送设置指示符,则发送关于每一个丢弃的服务数据单元的丢弃信息; 或者如果未配置该MRW发送设置指示符,则发送关于最后丢弃的服务数据单元的丢弃信息。 To achieve these objects and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, according to the present invention, in a radio communication system, data is transmitted from the RLC layer method to confirm the mode of operation, comprising the steps of : in the transmission buffer from the upper layer service data unit SDU received memory; converting service data units from an upper layer into a protocol data unit (PDU) to be transmitted to the receiving side; at least one service data unit is discarded; and discarding the at least one service discarding unit transmits information data to the receiver; wherein: check whether the transmission MRW indicator provided; and if the transmission setting indicator MRW configuration, the service data is sent on each of discarding a discarded cell information; or If the configuration is not transmitted MRW setting indicator is transmitted on the last discarded service data unit discard information. 优选地,该部分丢弃的信息对应于接收方的接收窗口的移动位置信息。 Preferably, the information of the discarded portion corresponding to the movement position information reception window of the receiver. 优选地,进一步包括在接收方根据部分丢弃信息移动接收窗口。 Preferably, further comprising discarding partial information of the mobile reception window in the receiver. 优选地,该至少一个服务数据单元SDU对应于在缓冲器中存储的至少一个协议数据单元PDU。 Preferably, the at least one service data unit SDU corresponding to the at least one protocol data unit PDU stored in the buffer. 优选地,如果满足条件,则该至少一个服务数据单元SDU被丢弃。 Preferably, if the condition is met, the at least one service data unit SDU is discarded. 优选地,在从上层接收该至少一个服务数据单元SDU之后,当直到经过预定时间周期仍不能将至少一个服务数据单元SDU发送到接收方时,该条件被满足。 Preferably, after receiving the at least one service data unit SDU from an upper layer, when the predetermined period of time until a still capable of at least one service data unit SDU transmitted to the receiving side, this condition is satisfied. 优选地,当即使发送至少一个协议数据单元PDU预定次数仍不能从接收方接收确认ACK信号时,该条件被满足。 Preferably, even when transmitting the at least one protocol data unit PDU predetermined number of times is still receiving side receives the ACK signal from the acknowledgment, the condition is satisfied. 优选地,该服务数据单元SDU的部分丢弃信息被载入到将被发送到接收方的窗口移动指示符。 Preferably, the service data unit SDU discard information part is loaded to the window to be transmitted to the mobile recipient indicator. 优选地,该窗口移动指示符是移动接收窗口超级字段MRW SUFI。 Preferably, the indicator is a moving window is moved receiving window super field of the MRW SUFI. 优选地,该移动接收窗口超级字段MRWSUFI包括指示丢弃的至少一个服务数据单元SDU的最后发送的服务数据单元SDU是否超过发送窗口的范围的LENGTH字段,指示包括最后发送的服务数据单元SDU的最后的协议数据单元PDU的序号的SN一MRWLENcsra字段,和指示在具有序号的最后协议数据单元PDU中最后发送的服务数据单元SDU的特定顺序的Nlength字段。 Preferably, the move receiving window super field MRWSUFI comprises at least one service data unit SDU service data transmitted last an indication of the discarded LENGTH field unit SDU if the range exceeding the send window indicating inclusion of the last service data unit transmitted SDU last service data unit SDU sequence number of the protocol data unit (PDU) of a MRWLENcsra SN field, and indicating the last transmission of the last protocol data units PDU having a sequence number in a particular order Nlength field. 优选地,该服务数据单元SDU的部分丢弃信息是最后丢弃的服务数据单元SDU的信息。 Partially Preferably, the service data unit SDU discard information is information of the last discarded service data unit SDU. 在本发明的另一方面, 一种在无线电通信系统中发送数据的方法, 包括以下步骤:在无线链路控制层设置用于服务数据单元SDU的发送模式建立指示符;将从上层接收的服务数据单元SDU转换为协议数据单元PDU;如果满足条件则丢弃至少一个服务数据单元SDU;根据设置的发送模式建立指示符发送丢弃的至少一个服务数据单元SDU的整个或部分丢弃信息到接收方,其中,该服务数据单元SDU的整个或部分丢弃信息对应于接收方的接收窗口的移动位置信息。 In another aspect of the present invention, a method for transmitting data in a radio communication system, comprising the steps of: setting a radio link control layer service data unit SDU transmission mode for establishing an indicator; service received from an upper layer is converted into data units SDU protocol data units PDUs; condition is satisfied if at least one service data unit is discarded SDU; all or part of the establishment of at least one service data unit SDU discard indicator transmitted to the receiving side discards the information according to the transmission mode is set, wherein all or part of the discard information of the SDU service data units corresponding to the movement position information reception window of the receiver. 优选地,进一步包括在接收方根据整个或部分丢弃信息移动接收窗口。 Preferably, the receiving side further comprising a receiving window according to discard all or part of the mobile information. 优选地,在从上层接收至少一个服务数据单元SDU之后,当直到经过预定时间周期仍不能将至少一个服务数据单元SDU发送到接收方时,该条件被满足。 Preferably, after receiving the at least one service data unit SDU from an upper layer, when the predetermined period of time until a still capable of at least one service data unit SDU transmitted to the receiving side, the condition is satisfied. 优选地,当即使发送至少一个协议数据单元PDU预定次数仍不能从接收方接收确认ACK信号时,该条件被满足,其中将至少一个服务数据单元SDU载入至少一个协议数据单元PDU。 Preferably, even when transmitting the at least one protocol data unit (PDU) a predetermined number of times is still receiving side receives the ACK signal from the acknowledgment, the condition is satisfied, wherein the at least one service data unit SDU loading at least one protocol data unit PDU. 优选地,该服务数据单元SDU的整个或部分丢弃信息被通过发送控制信息的状态协议数据单元的字段发送到接收方。 Preferably, all or part of the service data unit SDU discard information is transmitted via a state field of information transmission control protocol data unit to the receiver. 优选地,该服务数据单元SDU的部分丢弃信息是最后丢弃的服务数据单元SDU的信息。 Partially Preferably, the service data unit SDU discard information is information of the last discarded service data unit SDU. 优选地,该字段是移动接收窗口超级字段MRWSUFI。 Preferably, the field is moving the receiving window super field MRWSUFI. 优选地,该移动接收窗口超级字段MRW SUFI包括指示丢弃的至少一个服务数据单元SDU的最后发送的服务数据单元SDU是否超过传输窗口的范围的LENGTH字段,指示包括最后发送的服务数据单元SDU的最后的协议数据单元PDU的序号的SN一MRWlemcth字段,和指示在具有序号的最后协议数据单元PDU中最后发送的服务数据单元SDU的特定顺序的Nlength字段。 Preferably, the move receiving window super field of the MRW SUFI comprises LENGTH field is a service data unit SDU transmitted last an indication to discard at least one service data unit SDU exceeds the range of transmission window indicating inclusion of the last service data unit last transmitted SDU, service data unit SDU sequence number of the protocol data unit (PDU) of a MRWlemcth SN field, and indicating the last transmission of the last protocol data units PDU having a sequence number in a particular order Nlength field. 优选地,该移动接收窗口超级字段MRW SUFI包括指示连续信息是移动接收窗口超级字段MRW SUFI的类型字段,指示丢弃的至少一个服务数据单元SDU的个数的LENGTH字段,指示包括每个丢弃的服务数据单元SDU的每个最后的协议数据单元PDU的每个序号的SN—MRWi, (i=l, 2, 3, ..., N, N是正整数)字段,和指示在具有所述每个序号的每个相应协议数据单元PDU中的每个最后丢弃的服务数据单元SDU的特定顺序的Nlength字段。 Preferably, moving the receiving window super field of the MRW SUFI comprising information indicating a continuous moving window super field of the MRW SUFI receiving a type field, a LENGTH field indicating the number of discarded at least one service data unit SDU, the service indication comprises discarding each each sequence number of the last protocol data unit per data unit SDU, PDU SN-MRWi, (i = l, 2, 3, ..., N, N is a positive integer) field, indicating said each having each last discarded service data unit SDU each respective protocol data unit PDU sequence numbers in a particular order Nlength field. 优选地,该服务数据单元SDU的部分丢弃信息是最后丢弃的服务数据单元SDU的信息。 Partially Preferably, the service data unit SDU discard information is information of the last discarded service data unit SDU. 在本发明的另一方面, 一种一种在无线电通信系统中在以确认模式操作的RLC层中接收数据的方法,包括以下步骤:接收在发送方丢弃的至少一个服务数据单元的丢弃信息;和根据接收的丢弃信息移动接收窗口的位置;其特征在于,如果配置了MRW发送设置指示符, 则所述丢弃信息包括关于每一个丢弃的服务数据单元的信息;或者如果未配置该MRW发送设置指示符,则所述丢弃信息包括关于最后丢弃的服务数据单元的信息。 In another aspect of the method of the present invention, a method of receiving data in the RLC layer operating in the acknowledged mode radio communication system, comprising the steps of: at least one service data discarded in the discard information received sender unit; the movement and location information of the reception window discards received; wherein, setting an indicator if the MRW transmission configuration, the discard information includes information regarding each service data unit discard; is not configured or if the transmitted MRW settings indicator, the discard information comprises information about the last discarded service data unit. 优选地,该用于接收窗口的移动位置信息是在无线链路控制层通过发送控制信息的状态协议数据单元PDU的字段接收的。 Preferably, the movement position information for the receiving window in a radio link control layer by sending the control information to the STATUS PDU received PDU field. 优选地,该用于接收窗口的移动位置信息是在发送方的最后丢弃的服务数据单元SDU的信息。 Preferably, the movement position information is the information for receiving the window in the sender discards the last service data units SDU. 优选地,该状态协议数据单元PDU的字段是移动接收窗口超级字段MRW SUFI 。 Preferably, the status protocol data unit (PDU) field is moving the receiving window super field of the MRW SUFI. 至少一个服务数据单元SDU的最后发送的服务数据单元SDU是否超过传输窗口的范围的LENGTH字段,指示包括最后发送的服务数据单元SDU的最后的协议数据单元PDU的序号的SN—MRWlength字段, 和指示在具有序号的最后协议数据单元PDU中最后发送的服务数据单元SDU的特定顺序的Nlength字段。 The at least one service data unit SDU last transmitted service data unit SDU exceeds the range of the transmission window of the LENGTH field indicating including number of the last protocol service data unit last transmitted SDU data unit PDU of SN-MRWlength field, indicating SDU service data unit last transmitted in protocol data units PDU having the last sequence number in a particular order Nlength field. 应该理解,本发明的上述一般说明和以下详细说明是示例性和说明性的,旨在提供对本发明提出的权利要求的进一步说明。 It should be understood that the foregoing general description and the following detailed description of the invention are exemplary and explanatory and are intended to provide further explanation of the invention claimed by the present claims. 附图说明所包括的用于提供本发明的进一步理解,并被包括在此申请中并构成其一部分的附图,说明了本发明的实施例,并和说明书一起帮助解释本发明的原理。 BRIEF DESCRIPTION included to provide a further understanding of the present invention, and are included in this application and constitute a part of the described embodiments of the present invention, and together with the description help to explain the principles of the invention. 在这些图中-图1表示根据现有技术的一般无线电通信系统的体系结构图。 In the drawings - FIG 1 shows a general architecture of a radio communication system according to the prior art. 图2A表示一个用于解释一种根据现有技术向接收方发送由基于时间的RLC SDU丢弃方法丢弃的RLC SDU的丢弃信息的示意图; 图2B表示在图2A的情况下发送的MRW SUFI的格式和参数; 图3表示根据本发明的一个实施例的MRW SUFI的表; 图4表示根据本发明的另一个实施例的MRW SUFI的表; 图5表示使用图3中所示的MRW SUFI执行丢弃功能的示意图; 图6表示使用图4中所示的MRW SUFI执行丢弃功能的示意图; 图7表示运行分别对应于发送方和接收方的无线电通信系统的丢弃功能的流程图;图8表示根据本发明,根据在一个无线电通信系统中的一个发送缓冲器中的停留时间限制,为服务数据单元执行丢弃功能的示意图;禾口图9表示根据本发明,根据在一个无线电通信系统中的一个发送缓冲器中的停留时间限制,为服务数据单元执行丢弃功能的流程图。 2A shows a schematic explanation for sending information from the discarded RLC SDU discard time-based method of the discarded RLC SDU according to the prior art for the recipient; FIG. 2B shows the transmitted MRW SUFI in the case of the format of FIG. 2A and parameters; FIG. 3 shows a MRW SUFI table according to one embodiment of the present invention; Figure 4 shows a table MRW SUFI embodiment of the present invention according to another embodiment; MRW SUFI performed as shown in FIG. 3 to FIG. 5 shows discards schematic function; schematic MRW SUFI shown in FIG. 6 to FIG. 4 showing discard the function; FIG. 7 shows a flowchart of operation corresponding respectively to a radio communication system transmitting and receiving a discard function; FIG. 8 shows a present invention, a transmission buffer in accordance with the residence time in a radio communication system in the limit, is a schematic diagram of functions performed discarded service data unit; FIG. 9 shows a port Wo of the present invention, a transmitting buffer according to a radio communication system the residence time in the reactor limits the function of dropping a flowchart for performing a service data unit. 优选实施例的详细说明 Detailed description of preferred embodiment

下面将参考附图中的例子对本发明的优选实施例进行详细说明。 The example embodiments with reference to the drawings in detail the following description of the present preferred invention.

在本发明中,当一个RLC层由一个上层产生用来建立一个无线电承载信道时,预先配置一个用于SDU丢弃信息的MRW发送设置指示符。 In the present invention, when a RLC layer to the upper levels of a bearer for establishing a radio channel, a pre-configured for the SDU discard MRW transmission setting indicator information.

如果配置了配置的MRW模式设置指示符,例如,如果设置了一个PDCP层的序号模式,发送方和接收方的PDCP层使PDCP PDU,即RLCSDU的序号相互符合。 If the configuration setting MRW mode configuration indicator, e.g., if the mode number set in a PDCP layer, the transmitting PDCP and receiving PDCP PDUs that the layer, i.e. RLCSDU serial number coincide with each other. 因此,应该配置MRW模式设置指示符。 Therefore, you should configure the settings MRW mode indicator. 因此,如果建立了配置的MRW模式设置指示符,发送方的RLC层向对应于接收方的另一个无线电通信系统的另一个RLC层发送关于丢弃的SDU的所有丢弃信息。 Thus, if the MRW mode configuration settings establishment indicator, the RLC layer of the sender RLC layer corresponding to another radio communication system according to another recipient sends all discard information about discarded SDU.

在这种情况下,丢弃信息包括属于每个丢弃的SDU的结尾的PDU 的序号。 In this case, the PDU is discarded information includes the sequence belonging to each end of the SDU discarded. 详细说来,丢弃信息包括一个字段,该字段表示在每个丢弃的SDU的下一个SDU的起始位置的RLC PDU的序号。 In detail, including a discard information field that indicates a starting position of the RLC PDU in each discarded SDU sequence number of the next SDU. 如果两个SDU 与一个PDU重叠,并且前一个SDU被丢弃,PDU的序号表示丢弃的SDU的结尾。 If a PDU with SDU two overlap, and the front one SDU is discarded, the PDU sequence number indicates the end of the discarded SDU. 如果两个SDU之间的边界与两个PDU的边界重合,而且前一个SDU被丢弃,第二个PDU的序号表示丢弃的SDU的结尾。 If the boundary between two SDU boundaries coincide with two of the PDU, and an SDU is discarded before the second PDU sequence numbers indicates the end of the discarded SDU.

同时,如果当产生RLC层时,没有配置MRW模式指示符,例如, 如果没有设置PDCP层的序号模式,对应于发送方的无线电通信系统向接收方全部地或部分地发送关于丢弃的SDU的丢弃信息。 Meanwhile, if, when the RLC layer is generated, no MRW mode indicator, e.g., if the mode number is not set the PDCP layer, corresponding to the transmission side discard a radio communication system transmits the discarded SDU on the receiving side entirely or in part information. 当然,它能够向接收方发送所有的丢弃信息。 Of course, it can send all the information to the receiving side discards.

在这种情况下,所需要的用于移动接收方的接收窗口的丢弃信息的一部分,表示最后一个丢弃的SDU的位置信息。 In this case, a portion of the discard information for moving the receiving window of the receiving side required, information indicating the position of the last discarded SDU. 特定地,丢弃信息的该部分表示一个属于最后一个丢弃的SDU的结尾的PDU的序号。 The PDU sequence number In particular, the discard information part represents a part of the end of the last discarded SDU. 同时,如以上说明所提及,关于丢弃的SDU的丢弃信息可能被包括在MRW SUFI中。 Meanwhile, as mentioned in the above description, regarding the discarded SDUs discarded information may be included in the MRW SUFI.

MRW SUFI被构建成如图3所示,使得能够向接收方发送丢弃的SDU的整个丢弃信息。 MRW SUFI is constructed as shown in FIG. 3, so that the entire disposal information can be transmitted to the receiving side discards the SDU. 图3表示根据本发明的一个实施例的MRW SUFI 表。 3 shows a MRW SUFI table according to one embodiment of the present invention.

参见图3, MRW SUFI包括代表属于丢弃的SDU的结尾的所有PDU的序号的所有参数。 Referring to Figure 3, MRW SUFI comprises all the numbers of all the parameters representing the end of the PDU belonging to the discarded SDU.

另一方面,MRW SUFI可以被构建成如图4所示从而可以向接收方发送丢弃的SDU的一部分丢弃信息。 On the other hand, MRW SUFI can be constructed as shown in Figure 4 can be transmitted to the receiving side discards the SDU discard information part. 图4表示根据本发明的另一个实施例的MRW SUFI的表。 Figure 4 shows a table MRW SUFI embodiment of the present invention according to another embodiment.

参见图4, MRW SUFI包括一个参数,其代表属于丢弃的SDU的最后一个SDU的PDU的序号。 4, MRW SUFI includes a parameter, which represents a PDU sequence number belonging to discard a last SDU Referring to FIG SDU.

同时,可以使用如图3所示的全体参数来代表丢弃的SDU的一部分丢弃信息。 Meanwhile, all the parameters may be used as shown in FIG. 3 to represent the discarded SDU discard information part.

首先,如果为RLC层配置MRW模式设置指示符,如在上述说明中所提及,在发送方丢弃的整体SDU的丢弃信息应该被发送到接收方。 Firstly, if the configuration MRW mode indicator is provided to the RLC layer, as mentioned in the above description, the discard information discards the entire SDU transmission should be sent to the receiver.

因此,如图3中所示,MRW SUFI包括所有参数:LENGTH、 SN_MRWp SN_MRW2,…,SN一MRWlength., , SN_MRWLENGTH和 Thus, as shown in FIG, MRW SUFI 3 comprising all parameters: LENGTH, SN_MRWp SN_MRW2, ..., SN a MRWlength,, SN_MRWLENGTH and.

包括4比特的参数LENGTH表示丟弃的SDU的个数。 Includes a parameter LENGTH 4 bits represent the number of discarded SDU. 参数SN—MRWP SN—MRW2, ..., SN—MRWleng™.,和SN—MRWLENGTH代表属于丢弃的SDU的结尾的PDU的序号。 Parameter SN-MRWP SN-MRW2, ..., SN-MRWleng ™., And SN-MRWLENGTH representative of the end of the discarded SDU belongs to a PDU sequence number. 每个参数SN—MRWi包括12比特。 Each parameter SN-MRWi comprises 12 bits. 参数Nlem3th表示娜些SDU至今连续地对应于上一个丢弃的SDU,上一个丢弃的SDU有属于(或者代表)该上一个丢弃的SDU 的结尾的PDU。 These parameters Nlem3th represents Na SDU has a continuously corresponding to the discarded SDU, a discarded SDU belonging to (or represents) the upper end of a PDU is discarded SDU. 如果丢弃的SDU的个数是四,参数LENGTH由4比特"0100" 代表。 If the number of discarded SDU is four, the 4-bit LENGTH parameter "0100" represents. 同时,每个SN—MRWi(il, 2, ..., LENGTH-l, LENGTH)表示属于每个丢弃的SDU的结尾的每个PDU的序号。 Meanwhile, each SN-MRWi (il, 2, ..., LENGTH-l, LENGTH) indicates the serial number of each PDU belonging to each end of the SDU discarded. 例如,如果第二个丢弃的SDU的下一个SDU始自具有序号"2"的第二PDU,参数SN—MRW2由序号"2"来代表。 For example, if a second SDU discarded SDU having a sequence number starting from "2" in the second PDUs, parameter SN-MRW2 "2" represented by a number. 在这种情况下,用于丢弃的SDU的位置信息的参数由下一个SDU所始自的PDU的序号代表。 In this case, the parameter for the position information of the discarded SDU in the PDU of sequence number starting from the representative of the next SDU. 在另一方面,如果没有为RLC层配置MRW模式设置指示符,如上述说明中所提及,对应于发送方的无线电通信系统仅仅把用于移动接收方的窗口所需的丢弃信息通知接收方。 On the other hand, if the RLC is not configured MRW mode indicator layer is provided, as mentioned in the above description, a radio communication system corresponding to the transmitting side discards only required for moving the receiving side informs the receiving window information . 在这种情况下,对应于发送方的无线电通信系统把上一个丢弃的SDU的位置信息装载在MRW SUFI上。 SDU position information in this case corresponds to the transmission side radio communication system on the loaded on a disposable MRW SUFI. 因此,图4包括:参数SN_MRWLENGTH,其代表属于(表示)上一个丢弃的SDU的结尾的PDU的序号;和另一个参数nlemth,其表示上一个丢弃的SDU连续地对应于所表示的PDU中的SDU。 Thus, FIG. 4 comprising: a parameter SN_MRWLENGTH, which represents part of (expressed) PDU sequence number to the end of the SDU discarded last; and another parameter nlemth, which represents a last discarded SDU corresponding to the PDU continuously represented SDU. 参数Nlemth代表在所表示的PDU中将被忽视的SDU的个数。 Representative Nlemth parameters indicated in the PDU is ignored number SDU. 在图4中,MRW SUFI的参数LENGTH代表上一个丢弃的SDU 的发送信息。 In FIG. 4, the parameter LENGTH is representative of a transmitted MRW SUFI information is discarded SDU. 并且,对应于发送方的无线电通信系统检查上一个丢弃的SDU是否超过了发送窗口的容量。 And, corresponding to the transmission side radio communication system checks whether a discarded SDU exceeds the capacity of the transmission window. 在这种情况下,参数LENGTH, 不同于在图3中的参数,表示检査结果。 In this case, the parameter LENGTH, different from parameters in FIG. 3, showing the results. 另外,可能不使用这样一个字段。 Further, such a field may not be used. 当上一次丢弃的,且其丢弃信息被发送的SDU位于发送窗口中时,无线电通信系统将参数LENGTH设置为"0001"。 When the last discarded, and the discarded SDU information to be transmitted is located at the transmission window, the radio communication system the parameter LENGTH is set to "0001." 而且,当上一个发送的SDU超出了发送窗口或者在发送窗口的范围之外时,参数LENGTH的字段被设置为"0000"。 Further, when a transmitted SDU or exceeds the send window is outside the range of the transmission window, the parameter LENGTH field is set to "0000." 如上述说明中所提及,当发送方的丢弃信息被发送到接收方时, 对应于发送方的无线电系统根据RRC层是否为(向)其RLC层配置了发送MRW模式设置指示符,向接收方全部地或者部分地发送丢弃的SDU的信息。 As mentioned in the above description, when the discard information of the sender is sent to the receiver, a radio system corresponding to the sender according to whether the RRC layer (to) which is disposed RLC layer transmission MRW mode indicator is provided to the receiving Party all or part of the information transmitted SDU discarded. 图5表示使用如图3中所示的MRW SUFI的消息结构执行丢弃功能的示意图。 Figure 5 shows a schematic view of the use illustrated in FIG. 3 MRW SUFI message structure discard the function. 参见图5,该图解释了当丢弃RLC SDU时包含在MRW SUFI中的参数。 Referring to Figure 5, this figure illustrates the RLC SDU is discarded when the parameters contained in the MRW SUFI. 假定下来到发送方的RLC层的RLC SDU正在被发送到接收方。 Down to the RLC layer assumes that the sender of the RLC SDU being sent to the receiver. 在这种情况下,如果为SDU10到SDU13在计时器中预设的发送时间超时,或者如果预设的发送个数是有限的,则可能丢弃SDU10到SDU13。 In this case, if the timeout is SDU10 to SDU13 preset in the timer transmission time, transmission or if the preset number is limited, it may drop to SDU10 SDU13. 例如,如果在发送过程中丢失了已经向接收方发送的SDU10到SDU13,或者如果没有能够从接收方收到肯定确认,发送方丢弃SDU10 到SDU13,然后向接收方发送装载到MRWSUFI上的丢弃信息。 For example, if the lost SDU10 SDU13 already sent to the recipient during transmission, or if no acknowledgment can be received, the sender discards SDU10 SDU13, and then transmitted to the receiving side discards the information loaded from the recipient MRWSUFI . MRW SUFI包括每个丟弃的SDU的位置信息。 MRW SUFI comprises location information of each discarded SDU. 因此,图3中的MRW SUFI包括对应于SDU10到SDU13的四个RLC SDU的位置信息。 Thus, MRW SUFI in FIG. 3 includes position information corresponding to the four SDU13 SDU10 to the RLC SDU. 因此,如图5中所示的参数LENGTH的一个值变成"4"。 Thus, a value of the parameter LENGTH shown in FIG. 5 becomes "4." 而且,代表属于或者表示各自丢弃的SDU的结尾的各个PDU的序号的四个参数SN—MRW!到SN—MRW4的值分别是"1" , "1" , "3"和"7"。 Also, on behalf of, or represents the serial number of each PDU the end of each discarded SDU of four parameters SN-MRW! SN-MRW4 the value is "1", "1", "3" and "7" respectively. 同时,最后一个参数SN—MRW4表示PDU7,其表示丢弃的SDU13 的结尾。 Meanwhile, the last parameter SN-MRW4 represented PDU7, which indicates the end of SDU13 discarded. 另外,最后一个参数SN一MRW4指引随后的SDU14的开始, 并表示当发送再次开始时,PDU7具有发送的优先权。 Further, SN guided the last parameter of a subsequent SDU14 MRW4, and said transmission start again when, PDU7 transmitted with priority. 仅仅SDU13是属于或者表示上一个丢弃的SDU13的结尾的PDU7中的第一个丢弃的SDU。 Or represents only SDU13 belongs SDU discard the first end of a discarded SDU13 in PDU7. 因此,参数Nlength的僮是"1"。 Thus, the parameter Nlength the child is "1." 这命令忽略从接收方发送的PDU7的第一个SDU,并且应该接收第二个SDU。 This command ignores the first SDU transmitted from the receiving PDU7 and should receive the second SDU. 同时,如图5中所示,已经接收了MRWSUFI的接收方向发送方发送MRW SUFI的一个响应信号MRW一ACK SUFI,并根据包括在MRW SUFI中的内容丢弃对应的RLC SDU。 Meanwhile, as shown in FIG. 5, which has received the reception direction MRWSUFI sender transmits a response signal of a MRW MRW SUFI ACK SUFI, and discards the contents of the corresponding RLC SDU is included in the MRW SUFI. 接收方接着将接收窗口移动到上一个丢弃的SDU的位置。 Recipient receiving window then moved to a position on a discarded SDU. 在图5中,接收方把接收窗口移动到具有序号"7"的PDU。 In FIG. 5, the receiving side moves the receiving window having a sequence number PDU "7" of. 另外,接收方向一个上层传送被发送方丢弃的RLC SDU的丢弃信息。 Further, an upper layer receives a transmission direction discard information is discarded in the transmitting side RLC SDU. 图6表示使用图4中所示的MRW SUFI执行丢弃功能的示意图。 Discard MRW SUFI schematic function performed as shown in FIG. 4 to FIG. 6 showing. 当RRC没有配置发送MRW模式指示符时,经常使用图6。 When there is no RRC transmission MRW mode indicator is configured, often 6 to FIG. 在图6中,如果计时器预设的时间过期,或者发送个数的限制过限,则丢弃SDU10至iJ SDU13。 In FIG. 6, if the preset time the timer expires, or limit the number of transmission overrunning discarding SDU10 to iJ SDU13. 如上述说明中所述,当没有配置发送MRW模式指示符时,不必向接收方发送所有丢弃的SDU的全部丢弃信息。 As described in the above description, when the transmission MRW mode indicator is not configured, no need to transmit all discarded SDU discard all the information to the receiving party. 如图4中所说明的, 有必要把上一个丢弃的SDU的位置信息通知接收方。 Illustrated in FIG. 4, it is necessary to put on a location information of the SDU discarded notify the recipient. 因此,MRW SUFI包括上一个丢弃的SDU13的位置信息,该SDU13没有超出发送窗口。 Thus, MRW SUFI comprising information on the location of a SDU13 discarded, the transmission window does not exceed SDU13. 因此,图6中的参数LENGTH的值变成"1 "。 Therefore, the value of the LENGTH parameter in FIG. 6 becomes "1." 而且,如图6所示,属于或者表示上一个丢弃的SDU13的结尾的RLC PDU是PDU7,SDU13是从PDU7丢弃的第一个。 Further, as shown in FIG 6, showing a part of or the discarded end of the RLC PDU is SDU13 PDU7, SDU13 PDU7 is discarded from the first. 因此,参数SN_MRW,的值是"7",参数Nlength的値交成"1"。 Thus, the parameter SN_MRW, the value is "7", the parameter Nlength cross-Zhi "1." 同时,已经接收了MRW SUFI的接收方丢弃PDU0到PDU6,这些PDU具有等于或者低于包括在MRW SUFI中的参数SN一MRW "7" 的序号。 Meanwhile, the receiving side that has received MRW SUFI to discard PDU0 PDU6, the PDU comprises less than or equal to the parameters in the MRW SUFI a sequence number SN MRW "7" of. 如果接收了PDU7,接收方也丢弃PDU7。 If the received PDU7, the receiving side discards PDU7. 接收方接着把接收窗口移动到具有序号"7"的PDU7。 The receiver then has to move the receiving window number PDU7 "7" of. 另外,尚未配置发送MRW模式指示符的接收方,不向上层发送关于丢弃的SDU10到SDU13的丢弃信息。 In addition, the receiver has not configured the transmission MRW mode indicator does not transmit discard information about discarded SDU10 SDU13 to the upper layer. 在这种情况下,各个(对应于RLCSDU的)PDCPPDU的序号,如果存在的话,没能相互符合。 In this case, respective PDCP PDUs sequence number (corresponding to the RLCSDU), if present, can not meet each other. 图7表示分别对应于发送方和接收方的无线电通信系统的丢弃功能的操作流程图。 7 shows a flowchart of the operation functions correspond to discard the sender and receiver of a radio communication system. 图8表示根据本发明,根据在一个无线电通信系统中的计时器中设置的发送时间和有限的发送次数,为服务数据单元执行丢弃功能的示意图。 According to the present invention, FIG. 8 shows, according to the transmission time set in a timer in a radio communication system and transmitting a limited number of times, to perform a schematic view of a service data unit discard function. 参考图7和图8,下面将详细解释对应于发送方和接收方的无线电通信系统的丢弃功能的操作。 7 and FIG. 8, will be explained in detail the operation of the radio communication system corresponding to the sender and receiver of the discard function. 首先,从发送方的无线电通信系统向接收方的无线电通信系统连续地发送PDU形式(比如PDU0到PDU7)的基于时间的服务数据单元RLC SDUO到RLC SDU4。 First, continuously transmitted PDU to the radio communication system forms a recipient from a sender radio communication system (such PDU0 to PDU7) based on the time of the service data units RLC SDUO RLC SDU4. 当对应于各自的服务数据单元SDUO到SDU4的各自的协议数据单元PDUO到PDU7及其序号SN-Q到SN-7被发送到接收方时,发送方检査RLC服务数据单元RLC SDUO到RLC SDU3的预设的发送时间是否超时或者预设的发送个数是否超过限制。 When corresponding to the respective service data units to a respective SDUO PDUO SDU4 protocol data unit sequence number to the SN-Q PDU7 and SN-7 to be sent to the receiver, the sender to check RLC service data units to a RLC SDU3 RLC SDUO the number of whether the transmission of a preset timeout or send exceeds a preset limit. 如果为RLC服务数据单元RLC SDUO到RLC SDU4预设的发送时间没有超时,或者预设的发送个数没有超过限制,发送方向接收方重复地发送RLC SDUO到RLC SDU4。 If RLC service data units to a RLC SDUO RLC SDU4 predetermined sending time has not timed out, or does not exceed a preset limit transmission number, the transmission direction of the receiving side repeatedly transmits to the RLC SDUO RLC SDU4. 在这种情况下,发送方通过确认对发送的PDU的接收来检査RLC SDUO到RLC SDU4是否被发送到接收方。 In this case, the transmission side RLC SDUO check by confirming the reception of the PDU transmitted to the RLC SDU4 whether transmitted to the receiver. 如果直到为RLC服务数据单元RLC SDUO到RLC SDU4预设的发送时间超时或者预设的发送个数超过限制,还没有得到确认,发送方断定各自的RLC SDUO到RLC SDU4没有被发送到接收方。 If up to RLC service data units RLC SDUO RLC SDU4 to a preset transmission period expires or the number of transmission exceeds a preset limit, has not been confirmed, the sender to determine the respective RLC SDUO RLC SDU4 are not sent to the receiver. 如果RLC SDUO到RLC SDU4被发送到接收方,则发送方检査是否为/向RLC层配置了发送MRW模式指示符。 If the RLC SDUO RLC SDU4 to be sent to the recipient, the sender to check whether the / transmission MRW mode indicator is configured to the RLC layer. 如果断定各自的RLC SDUO到RLC SDU4没能被发送到接收方,发送方丢弃所发送的各自的RLC SDU。 If it is determined the respective RLC SDUO RLC SDU4 not be sent to the respective RLC SDU to the receiver, the transmitter discards the transmitted. 如果配置了发送MRW模式指示符,发送方丢弃所发送的各自的RLC SDU,向接收方发送关于所丢弃的各自的SDU的全部丢弃信息,之后发送对应于待发送的SDU的PDU信息。 If the transmission MRW mode indicator is configured, the transmitting side RLC SDU discard each transmitted, transmit all the respective SDU discard information about discarded to the recipient, then transmits the SDU corresponding to the PDU information to be transmitted. 如果没有配置发送MRW模式指示符,发送方向接收方发送部分丢弃信息。 If no transmission MRW mode indicator is transmitted to the recipient discard information transmitting section. 在这种情况下,当然可以向接收方发送各自的丢弃的SDU 的全部丢弃信息。 In this case, of course, may be sent to the respective receiver to discard all the SDU discard information. 因为在上述说明中已经做了解释,所以在此省略了关于丢弃信息和装载了丢弃信息的MRW SUFI的解释。 Since in the above description, explanation has been done, so the explanation is omitted here about the discard information and loading the MRW SUFI to discard information. 图8表示根据本发明,根据在一个无线电通信系统中的一个发送缓冲器中的停留时间限制,为服务数据单元执行丢弃功能的示意图。 According to the present invention, FIG. 8 shows, in accordance with the residence time of a transmission buffer in a radio communication system in the limit, is a schematic diagram of functions performed discarded service data unit. 图9表示根据本发明,根据在一个无线电通信系统中的一个发送缓冲器中的停留时间限制,为服务数据单元执行丟弃功能的流程图。 According to the present invention, FIG. 9 shows, in accordance with the residence time of a transmission buffer in a radio communication system is limited to performing the function of dropping a flowchart of service data units. 如果各自的RLC服务数据单元RLC SDUO到RLC SDU4的预设的发送时间超时或者预设的发送个数超过限制并且如果各自的RLC SDUO到RLC SDU4的至少一部分未能被发送到接收方,发送方从现在未发送的PDU的序号开始连接地为对应于随后将被发送的SDU的PDU的序号编号。 If the respective RLC service data units RLC SDUO to predetermined RLC SDU4 transmission timeout or exceeds a preset limit and if the number of transmission of each RLC SDUO RLC SDU4 to at least a portion could not be sent to the receiver, the sender PDU sequence number does not now from the start of the transmission sequence number corresponding to a connection for SDU will be subsequently transmitted PDU number. 然后执行的是检查是否配置了发送MRW模式指示符的过程。 Then do is check whether the process of sending MRW mode indicator. 因为在上述说明中已经进行了详细解释,所以后续过程的详细解释在此省略。 Since in the above description it has been explained in detail, so a detailed explanation thereof is omitted here for the subsequent process. 同时,如果当丢弃信息已经被全部地或者部分地发送到接收方时, 接收方请求一个发送要求,发送方再次向接收方按次序发送被编号的RLC PDU。 Meanwhile, if the information has been discarded when full or partially transmitted to the receiving side, the receiving side requests a transmission request, the sender re-transmitted in order numbered RLC PDU to the receiver. 下面解释的是根据是否试图发送各自的RLC SDU来对PDU的序号进行再编号的过程。 The following is to explain the process of re-PDU numbers according to whether the number of attempts to transmit respective RLC SDU. 应用基于时间的丢弃方法的一个例子如图8所示。 Discarding method based on one example of application of time as shown in FIG. 首先,对应于发送方的无线电通信系统的RLC层向接收方发送从上层接收的RLC SDUO到RLC SDU4。 First, RLC layer corresponding to the transmission side radio communication system transmitting RLC SDUO received from the upper layer to the RLC SDU4 to the recipient. 在这种情况下,发送方向接收方发送对应于RLC SDUO到RLC SDU4的PDU。 In this case, the transmission direction corresponding to the receiving side transmits to the RLC SDUO RLC SDU4 the PDU. 如图8所示,通过RLC PDUO到RLC PDU1向接收方发送RLC SDUO。 8, the RLC PDU1 RLC SDUO transmitted to the receiver through the RLC PDUO. 通过RLC PDU1向接收方发送RLC SDU1 。 It transmits RLC SDU1 to the receiver through the RLC PDU1. 通过RLC PDU1, RLCPDU2和RLCPDU3向接收方发送RLCSDU2。 , RLCPDU2 and RLCPDU3 RLCSDU2 transmission to the receiver through the RLC PDU1. 并且,通过RLC PDU3到RLC PDU6向接收方发送RLC SDU3。 And transmits RLC SDU3 to the receiver through the RLC PDU3 to the RLC PDU6. 各个RLC PDU 依次具有序号SN-O, SN=1, SN=3, SN=4, SN-5和SN=6。 Each RLC PDU having a sequence number SN-O, SN = 1, SN = 3, SN = 4, SN-5 and SN = 6. 参见图8,尽管发送方已经分别发送了对应于RLC SDU0到RLC SDU2的RLC PDUO到RLC PDU2,接收方接收了RLC PDUO和RLC PDU1,但是已经从接收方发送的确认信号ACK丢失了。 Referring to FIG. 8, although the sender has sent respectively to corresponding RLC SDU0 RLC SDU2 to the RLC PDUO RLC PDU2, the recipient receives RLC PDUO and RLC PDU1, but has been lost from the acknowledge signal ACK sent by the receiver. (事实上, 发送方无法知道是接收方没有收到,还是发送方没能接收到一个接收确认信号。)同时,在从发送方向接收方的发送过程中丢失了RLC PDU2,而且,尚未发送RLC PDU3到RLC PDU6。 (In fact, the sender can not know the recipient is not received, or the sender fails to receive a confirmation signal is received.) Meanwhile, the RLC PDU2 lost during transmission from a sender to the recipient in, and that has not been sent RLC PDU3 to RLC PDU6. 在这种情况下,发送方无法知道是接收方没有收到在发送过程中丢失的RLC PDU2,还是发送方自身没能接收到接收确认信号。 In this case, the sender can not know that the recipient does not receive lost during transmission RLC PDU2, or the sender to the receiver itself fails to receive a confirmation signal. 但是,从来没有发送过RLC PDU3。 However, I never sent a RLC PDU3. 因此, 发送方当然确认接收方接收失败。 Thus, the sender of course recipient acknowledgment reception failure. 在这种情况下,如果由计时器预设的RLC SDUO到RLC SDU3的缓冲器停留发送时间超过了时间限度,对应于发送方的无线电通信系统丢弃发送的RLC PDUO到RLC PDU2和对应于RLC PDU3到RLC PDU6的RLC SDU3以及对应于存储在发送缓冲器中,已经试图发送的RLC PDUO到RLC PDU2的RLC SDUO到RLC SDU2。 In this case, if the timer preset RLC SDUO RLC SDU3 to the buffer residence time exceeds the transmission time limit, the radio communication system corresponding to the transmitting side RLC PDUO discard the transmitted and RLC PDU2 corresponding RLC PDU3 RLC PDU6 to the RLC SDU3 and RLC PDUO corresponding stored in the transmission buffer, attempts have been transmitted to the RLC SDUO RLC PDU2 to RLC SDU2. 同时,对应于发送方的无线电通信系统检查至今已经试图发送了哪些丢弃的RLC SDU的SDU,并找到丢弃的RLC SDU的数据所属的第一个RLCPDU的序号。 At the same time, corresponding to the transmission side radio communication systems have attempted to check has transmitted RLC SDU of which the discarded SDU, and to find a number of RLCPDU discarded RLC SDU data belongs. 在图8中,丢弃的RLCSDU的数据所属的并且从来没有被发送的第一个RLCPDU的序号SN是"3"。 In FIG. 8, RLCSDU discarded data belongs and the first RLCPDU has never been transmitted serial number SN is "3." 另外,如以上说明中所解释的,发送方使用MRW SUFI向接收方发送丢弃的RLCSDU的丢弃信息。 Further, as explained in the above description, the sender using the transmitted MRW SUFI to discard information to the receiving side discards the RLCSDU. 在这种情况下,丢弃信息包括和下一次待发送的SDU相关的PDU信息。 In this case, the SDU discard information includes information and the next PDU to be transmitted is relevant. 发送方从从来没有发送的并被丢弃的PDU3的序号SN-3开始为对应于之后将被发送的RLC SDU4的各个PDU的序号重新编号。 PDU sequence number of each RLC SDU4 from the sender never sent and discarded PDU3 sequence number SN-3 began to be transmitted after the corresponding renumbered. SDU 的起始点等于PDU的起始点。 SDU is equal to the starting point of the starting point of the PDU. 因此,如图8中所示,对应于将在RLC SDU3之后发送的RLC SDU4的PDU7的序号SN被变成"3"而不是"7"。 Thus, as shown in FIG. 8, corresponding to the sequence number of the RLC SDU4 transmitted after the RLC SDU3 PDU7 SN is changed to "3" instead of "7." 此后,随后进行的确认配置了发送MRW SUFI的过程与图7所示的相同。 Thereafter, it was confirmed subsequent 7 shown configured with the same procedure as transmitted MRW SUFI in FIG. 同时,对应于接收方的无线电通信系统接收丢弃信息,然后丢弃对应于RLC SDU0到RLC SDU3的RLC PDU0到RLC PDU6。 Meanwhile, the radio communication system corresponding to the receiving side discards the information received, and then discards the corresponding RLC SDU0 RLC SDU3 to the RLC PDU0 RLC PDU6. 随后,接收方向发送方发送一个要求信号,该信号命令具有序号"3"的RLCPDU被首先从发送方发送。 Subsequently, the direction of the receiving side transmits a request signal is transmitted, the command signal having the number "3" RLCPDU is first transmitted from the sender. 同时,发送方向接收方发送具有序号为SN-3的RLC PDU7的下一个RLCSDU4。 Meanwhile, the transmission having a transmission direction of the receiving side RLC sequence number of the next RLCSDU4 PDU7 of the SN-3. 另外,在RLCPDU7之后的各个RLCPDU的序号从紧跟序号SN-3之后的一个号码开始被连续地重新编号。 Further, after the serial number of each RLCPDU RLCPDU7 begins with a sequence number immediately after the number 3 SN-renumbered consecutively. 而且,响应上述要求信号,具有重新编号的序号的RLCPDU被从发送方向接收方发送。 Further, in response to the request signal, having a serial number of the RLCPDU is re-received from the transmitting side transmission direction. 图9示出用于上述处理的一个流程图。 A flowchart of the processing described above for FIG. 9 shows. 发送方的RLC层形成对应于得发送的SDU的PDU,这些PDU被发送到接收方。 The sender RLC layer SDU corresponding to a PDU transmitted too, the PDU is transmitted to the receiving side. 在这种情况下,不断地检查接收的成功/失败。 In this case, constantly checking the reception of success / failure. 在不确认接收的成功/失败的情况下对停留在发送缓冲器中的SDU施加时间限制。 Dwell time limit is imposed in the transmission buffer in the SDU successfully received without acknowledgment / failure. 如果时间限制超时,丢弃对应的SDU,并终止再次发送。 If the time limit expires, discard the corresponding SDUs, and terminates transmission again. 另外, 向接收方发送关于丢弃的SDU的信息。 Further, it transmits information on the discarded SDU to the receiver. 并且,检查具有特定SDU的数据的PDU是否曾经被发送到接收方。 Further, inspection data of a PDU having a particular SDU ever been transmitted to the receiver. 因此,为对应于新的SDU的另一个PDU的一个序号使用一个对应于从来没有被试图发送的SDU 的PDU的序号。 Thus, using a sequence number corresponding to a new SDU another PDU is a PDU corresponding to the sequence number of the SDU has never been trying to send. 而且,接收方没有关于SDU的任何信息,因此也没有发送丢弃信息。 Further, no recipient about the SDU, so there is no transmission information is discarded. 但是,如上述实施例所提及,当在PDCP层中使用序号时是不可能这么做的。 However, as mentioned in the above embodiment, when the sequence number in the PDCP layer is not possible to do so. 因此,当没有配置发送MRW模式指示符时,根据本发明的实施例是可应用的。 Thus, when the transmission MRW mode indicator is not configured, according to an embodiment of the present invention it is applicable. 根据本发明的实施例,在对应于发送方的无线电通信系统中,有关在RLC层中所丢弃的RLC SDU的丢弃信息可变地根据发送MRW 模式指示符的配置被全部地或者部分地发送给接收方的RLC层。 According to an embodiment of the present invention, corresponding to the transmission side radio communication system, information is discarded in the RLC layer the discarded RLC SDU to be transmitted to a variable according to the transmission MRW mode indicator is disposed entirely or partially receiving side RLC layer. 因此, 本发明使得能够用一个具有较少量的控制信号执行SDU的丢弃功能, 并进一步减少发送方的负载。 Accordingly, the present invention makes it possible to use a smaller amount of control signal having performed the SDU discard function, and to further reduce the load of the sender. 另外,在根据本发明的实施例中,根据对应于RLC SDU的RLC PDU的发送的成功/失败对RLC PDU的序号进行重新编号。 Further, in an embodiment according to the present invention, renumber the RLC PDU sequence number based on the success / failure corresponding to the RLC PDU RLC SDU transmitted. 当发送方向接收方发送丢弃信息时,部分地使用用于通知关于丢弃的服务数据单元的丢弃信息的比特数量。 When sending discard information sent to the recipient, the number of partially used for the notification of discarded service data unit discard information bits. 即,仅把所需的丢弃信息发送到接收方, 从而使得能够减少发送所需的信号数量。 That is, only the required transmit discard information to the receiving side, thereby making it possible to reduce the number of signals required for transmission. 因此,有效地使用有限的无线电资源。 Thus, effective use of limited radio resources. 上述实施例仅是示例性的,并不应被认为是对本发明的限制。 The above-described embodiments are exemplary only, and should not be construed as limiting the present invention. 本发明的教导可以容易地应用于其他类型的装置。 The teachings of the present invention to other types of devices can be readily applied. 本发明的描述用于说明目的,不限制权利要求的范围。 The present invention is described for illustrative purposes and do not limit the scope of the claims. 本领域技术人员可以进行很多替换、 改进和变型。 Those skilled in the art can be many alternatives, modifications and variations.

Claims (24)

  1. 1.一种在无线电通信系统中从以确认模式操作的RLC层发送数据的方法,包括以下步骤: 在发送缓冲器中存储从上层接收的服务数据单元SDU; 将来自上层的服务数据单元转换成要发送给接收方的协议数据单元PDU; 丢弃至少一个服务数据单元;和将丢弃的至少一个服务数据单元的丢弃信息发送给接收方; 其特征在于: 检查是否配置了MRW发送设置指示符;以及如果配置了该MRW发送设置指示符,则发送关于每一个丢弃的服务数据单元的丢弃信息;或者如果未配置该MRW发送设置指示符,则发送关于最后丢弃的服务数据单元的丢弃信息。 1. A method for a radio communication system from the RLC layer transmission data to confirm the mode of operation, comprising the steps of: SDU from an upper layer service data units received in the transmission buffer memory; converting service data units from an upper layer into PDU protocol data unit to be transmitted to the receiving side; at least one service data unit is discarded; and at least one service data unit is discarded discard information to the receiving party; wherein: check whether the transmission MRW indicator provided; and If the transmitted MRW configuration setting indicator, the service data is sent on each of discarding a discarded cell information; not configured or if the transmitted MRW setting indicator is transmitted on the last discarded service data unit discard information.
  2. 2. 根据权利要求l的方法,其中,关于丟弃的至少一个服务数据单元的丢弃信息对应于接收方的接收窗口的移动位置信息。 2. The method of claim l, wherein, regarding at least one service data unit discard information discards the movement position information corresponding to the reception window of the receiver.
  3. 3. 根据权利要求l的方法,其中,如果满足条件,则该至少一个服务数据单元被丢弃。 3. The method of claim l, wherein, if the condition is met, the at least one service data unit is discarded.
  4. 4. 根据权利要求3的方法,其中,在从上层接收该至少一个服务数据单元之后,当直到经过预定时间周期仍未将该至少一个服务数据单元发送到接收方时,该条件被满足。 4. The method as claimed in claim 3, wherein, after receiving the at least one service data unit from an upper layer, when the predetermined time period has not elapsed until the at least one service data unit is transmitted to the receiving side, the condition is satisfied.
  5. 5. 根据权利要求3的方法,其中,当即使发送该至少一个协议数据单元预定次数仍未从接收方接收被称作ACK信号的确认信号时,该条件被满足。 5. The method as claimed in claim 3, wherein, even when transmitting the at least one protocol data unit referred to as a predetermined number of times is not received acknowledgment signal ACK signal from the reception side, the condition is satisfied.
  6. 6. 根据权利要求l的方法,其中,该服务数据单元的丢弃信息被载入到将被发送到接收方的窗口移动指示符。 6. A method according to claim l, wherein the service data unit discard information is loaded into the window to be transmitted to the mobile recipient indicator.
  7. 7. 根据权利要求6的方法,其中,该窗口移动指示符是移动接收窗口超级字段MRWSUFI。 7. A method according to claim 6, wherein the indicator is a moving window is moved receiving window super field MRWSUFI.
  8. 8. 根据权利要求7的方法,其中,该移动接收窗口超级字段包括指示丢弃的至少一个服务数据单元的最后发送的服务数据单元是否超过发送窗口的范围的LENGTH字段,指示包括最后发送的服务数据单元的最后的协议数据单元的序号的SN一MRWl^cth字段,和指示在具有该序号的最后的协议数据单元中最后发送的服务数据单元的特定顺序的Ni^cjra字段。 8. A method according to claim 7, wherein the mobile receiving window super-field comprises an indication of the service data transmitted last discarded service data unit of the at least one cell exceeds the range of transmission window LENGTH field indicating the last transmitted service data comprising particular order of the last service data unit sequence number of the protocol data unit SN MRWl ^ cth a field, and indicating the last transmission of the last PDU having the sequence number of the cells in Ni ^ cjra field.
  9. 9. 根据权利要求l的方法,其中,当配置了该MRW发送设置指示符时,关于每一丢弃的服务数据单元的信息指示每一丢弃的服务数据单元的结束点。 9. The method of claim l, wherein, when the MRW transmission configuration setting indicator information about each discarded service data unit indicates the end point of each service data unit is discarded.
  10. 10. 根据权利要求9的方法,其中,所述关于每一丢弃的服务数据单元的信息是所述每一丢弃的服务数据单元的结束点所属协议数据单元的序号。 10. The method of claim 9, wherein said information of each discarded service data unit is the sequence number of the end point on each of said service data units to discard the protocol data unit belongs.
  11. 11. 根据权利要求1的方法,其中,当未配置该MRW发送设置指示符时,关于丢弃的至少一个服务数据单元的丢弃信息指示最后丢弃的服务数据单元的结束点。 The end point of the service data 11. The method of claim 1, wherein, when the transmission MRW setting an indicator is not set, the at least one service data unit discard discarded on information indicating the last discarded units.
  12. 12. 根据权利要求ll的方法,其中,部分信息是所述最后丢弃的服务数据单元的结束点所属协议数据单元的序号。 12. The method according to claim ll, wherein the portion of the information is the sequence number of the end point of the last discarded service data unit is a protocol data unit belongs.
  13. 13. 根据权利要求8的方法,其中,当丢弃的至少一个服务数据单元的最后发送的服务数据单元超过发送窗口的范围时,LENGTH字段被设置为"0000"。 13. The method according to claim 8, wherein, when the last transmitted service data unit discard at least one service data unit exceeds the range of the transmission window, LENGTH field is set to "0000."
  14. 14. 一种在无线电通信系统中在以确认模式操作的RLC层中接收数据的方法,包括以下步骤:接收在发送方丢弃的至少一个服务数据单元的丢弃信息;和根据接收的丢弃信息移动接收窗口的位置;其特征在于,如果配置了MRW发送设置指示符,则所述丢弃信息包括关于每一个丢弃的服务数据单元的信息;或者如果未配置该MRW发送设置指示符,则所述丢弃信息包括关于最后丢弃的服务数据单元的信息。 14. A method of receiving data in the RLC layer operating in the acknowledged mode radio communication system, comprising the steps of: at least one service data discarded in the discard information received sender unit; and discarded according to information received from the mobile receiver position of the window; wherein, if the MRW transmission setting indicator configuration information including information for each discarded service data units is discarding the; send MRW or if the setting indicator is not set, the information is discarded including information about the last discarded service data units of.
  15. 15. 根据权利要求14的方法,其中,关于丢弃的至少一个服务数据单元的信息对应于接收窗口的移动位置信息。 15. A method according to claim 14, wherein the information is discarded at least one service data unit corresponding to the movement position information about the reception window.
  16. 16. 根据权利要求15的方法,其中,该用于接收窗口的移动位置信息是在无线链路控制层通过发送控制信息的状态协议数据单元的字段接收的。 16. The method according to claim 15, wherein the movement position information of the receive window is a field for the state of the radio link control layer protocol control information by transmitting the received data unit.
  17. 17. 根据权利要求16的方法,其中,该状态协议数据单元的字段是移动接收窗口超级字段。 17. The method of claim 16, wherein the status field of the protocol data unit is moved receiving window super field.
  18. 18. 根据权利要求17的方法,其中,该移动接收窗口超级字段包括:指示丢弃的至少一个服务数据单元的最后发送的服务数据单元是否超过发送窗口的范围的LENGTH字段。 18. The method of claim 17, wherein the mobile receiving window super-field comprises: discarding service data units indicating the last transmission of the at least one service data unit exceeds the LENGTH field of the transmission window range.
  19. 19. 根据权利要求17的方法,其中,该移动接收窗口超级字段包括:指示包括最后发送的服务数据单元的最后的协议数据单元的序号的SN—MRW^NCjTH字段,和指示在具有该序号的最后协议数据单元中最后发送的服务数据单元的特定顺序的Nle^th字段。 19. The method of claim 17, wherein the mobile receiving window super-field comprises: SN-MRW ^ NCjTH field indicates the number of the last protocol comprising service data unit last transmitted data unit, and having the indicated number of Finally, the particular order of service data protocol data unit last transmitted cell Nle ^ th field.
  20. 20. 根据权利要求14的方法,其中,当配置了该MRW发送设置指示符时,关于每一丢弃的服务数据单元的信息指示每一丢弃的服务数据单元的结束点。 20. The method of claim 14, wherein, when the MRW transmission configuration setting indicator information about each discarded service data unit indicates the end point of each service data unit is discarded.
  21. 21. 根据权利要求20的方法,其中,所述关于每一丢弃的服务数据单元的信息是所述每一丢弃的服务数据单元的结束点所属协议数据单元的序号。 21. The method of claim 20, wherein the information about each discarded service data unit is the end point of the sequence number of each discarded service data units belong to protocol data units.
  22. 22. 根据权利要求14的方法,其中,当未配置该MRW发送设置指示符时,关于丢弃的至少一个服务数据单元的丢弃信息指示最后丢弃的服务数据单元的结束点。 22. The method of claim 14, wherein, when the MRW transmission set indicator is not disposed, on at least one service data unit discard discard information indicating the end point of the last discarded service data unit.
  23. 23. 根据权利要求22的方法,其中,该丢弃信息是所述最后丢弃的服务数据单元的结束点所属协议数据单元的序号。 No. protocol service data relevant to the end point 23. The method of claim 22, wherein the information is a discard unit discarding the last data unit.
  24. 24. 根据权利要求18的方法,其中,当丢弃的至少一个服务数据单元的最后发送的服务数据单元超过发送窗口的范围时,LENGTH字段被设置为"0000"。 24. The method of claim 18, wherein, when the last transmitted service data unit discard at least one service data unit exceeds the range of the transmission window, LENGTH field is set to "0000."
CN 200510082490 2000-10-07 2001-09-28 Method for transmitting data from RLC layer in radio communication system CN100446454C (en)

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KR20000059017A KR100344981B1 (en) 2000-10-07 Transmission Method for discard information of time based service data unit
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Citations (3)

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US5715257A (en) 1994-10-11 1998-02-03 Nippon Telegraph And Telephone Corporation System for re-transmission in data communication
US5790551A (en) 1995-11-28 1998-08-04 At&T Wireless Services Inc. Packet data transmission using dynamic channel assignment
EP1030484A2 (en) 1999-01-29 2000-08-23 Northern Telecom Limited Data link layer quality of service for UMTS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5715257A (en) 1994-10-11 1998-02-03 Nippon Telegraph And Telephone Corporation System for re-transmission in data communication
US5790551A (en) 1995-11-28 1998-08-04 At&T Wireless Services Inc. Packet data transmission using dynamic channel assignment
EP1030484A2 (en) 1999-01-29 2000-08-23 Northern Telecom Limited Data link layer quality of service for UMTS

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