WO2009059531A1

WO2009059531A1 - Method, system and device for reducing user's drop-calls during the static drift

Info

Publication number: WO2009059531A1
Application number: PCT/CN2008/072858
Authority: WO
Inventors: Jixian Xie
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-10-30
Filing date: 2008-10-28
Publication date: 2009-05-14
Also published as: CN101426244A; CN101426244B

Abstract

A method for reducing user's drop-calls during the static drift is provided. The method includes that: the drift radio network controller DRNC receives the radio link control RLC sequence number information sent by serving radio network controller SRNC; during the static drift, DRNC uses the RLC sequence number information to process the protocol data unit PDU sequence sent by UE. A system for reducing user's drop-calls during the static drift and a radio network controller RNC are also provided. The disaccord between the RLC sequence number information maintained by UE and the RLC sequence number information maintained by DRNC during the static drift can be solved by the method, system and controller.

Description

说明书静态迁移中减少用户掉话的方法、 ***和装置 Method, system and device for reducing user dropped calls in static migration

[1] 技术领域 [1] Technical field

[2] 本发明涉及通用移动通讯*** (Universal Mobile Telecommunication [2] The present invention relates to a universal mobile communication system (Universal Mobile Telecommunication)

System, UMTS) 领域，特别涉及 UMTS静态迁移中减少用户掉话的方法、 *** 和装置。 The System, UMTS) field, specifically related to methods, systems, and devices for reducing user dropped calls in UMTS static migration.

[3] 发明背景 [3] Background of the invention

[4] 目前的 UMTS网络结构如图 1所示，主要包括核心网络（Core [4] The current UMTS network structure is shown in Figure 1, which mainly includes the core network (Core).

Network, CN) 、 UMTS陆地无线接入网 (UMTS Terrestrial Radio Access Network, UTRAN) 和用户终端 (User Network, CN), UMTS Terrestrial Radio Access Network (UTRAN) and user terminals (User

Equipment, UE) 。其中' CN包括分组 (Packet Equipment, UE). Where 'CN includes grouping (Packet

Switched, PS) 域和电路（Circuit Switched, PS) Domains and Circuits (Circuit

Switched, CS) 域， CN通过 Iu接口与无线网络控制器（Radio Network Switched, CS) domain, CN through Iu interface and radio network controller (Radio Network

Controller, RNC) 相连； UTRAN中包括 RNC和基站 (Node B) ， RNC与 Node B通过 Iub接口相连，不同的 RNC通过 Iur接口相连； RNC和 Node Controller, RNC) is connected; UTRAN includes RNC and base station (Node B), RNC and Node B are connected through Iub interface, different RNCs are connected through Iur interface; RNC and Node

B组成无线网络控制*** （Radio Network B constitutes a wireless network control system (Radio Network

System, RNS) ； UE通过 Uu接口和 Node B相连， Uu接口也称为空中接口。 System, RNS); The UE is connected to the Node B through the Uu interface, which is also called the air interface.

[5] UTRAN中的无线接口从协议层上可以分为物理层、数据链路层和无线网络控制层，将物理层称为层 1 (L1) ，数据链路层称为层 2 (L2) ，将无线网络控制层称为层 3 (L3) 。上述 L2中包括无线链路控制（Radio Link [5] The wireless interface in UTRAN can be divided into physical layer, data link layer and wireless network control layer from the protocol layer. The physical layer is called layer 1 (L1) and the data link layer is called layer 2 (L2). , the wireless network control layer is called layer 3 (L3). The above L2 includes radio link control (Radio Link)

Controller, RLC) 子层，主要完成数据传输、流量控制和加解密等功能，在控制平面， RLC提供信令无线承载（Signal Radio Controller, RLC) sub-layer, mainly performs functions such as data transmission, flow control, and encryption and decryption. In the control plane, RLC provides signaling radio bearer (Signal Radio)

Bear, SRB) ，在用户平面， RLC提供业务无线承载（Traffic Radio Bear, SRB) , in the user plane, RLC provides service radio bearer (Traffic Radio

Bear, TRB) ' 上述 SRB和 TRB都属于无线承载 (Radio Bear, TRB) 'The above SRB and TRB are both radio bearers (Radio

Bear, RB) 的一部分。上述 L3中包括无线资源控制（Radio Resource Part of Bear, RB). The above L3 includes radio resource control (Radio Resource

Control, RRC) 子层，用于配置 RLC, 并对无线资源的分配进行控制。 Control, RRC) Sublayer, used to configure the RLC and control the allocation of radio resources.

[6] 根据上述无线接口协议层的划分， RNC中包括对应 L2的 RLC模块和对应 L3的 R RC模块， UE也包括 RLC模块，上述的 RLC模块完成对应 RLC层的功能，而 RRC 模块完成对应 RRC层的功能。 UE中的 RLC模块，通过 SRB向 RNC中的 RLC模块发送控制信令，或通过 TRB向 RNC中的 RLC模块发送业务消息，上述控制信令或业务消息都表现为协议数据单元（Protocol Data [6] According to the division of the above-mentioned radio interface protocol layer, the RNC includes an RLC module corresponding to L2 and an R corresponding to L3. The RC module, the UE also includes an RLC module, where the RLC module performs the function corresponding to the RLC layer, and the RRC module completes the function corresponding to the RRC layer. The RLC module in the UE sends control signaling to the RLC module in the RNC through the SRB, or sends a service message to the RLC module in the RNC through the TRB, where the control signaling or the service message is represented as a protocol data unit (Protocol Data).

Unit, PDU) 序列。 UE发送的每个 PDU序列都对应有 L2 RLC Unit, PDU) sequence. Each PDU sequence sent by the UE corresponds to L2 RLC.

PDU序列号，以下简称 RLC序列号， RNC中的 RLC模块具有序列号检査功能，检査 UE发送的是否为正确传输的 PDU，并向 UE返回通知接收情况的 RLC状态报告 The PDU serial number, hereinafter referred to as the RLC serial number, the RLC module in the RNC has a serial number check function, checks whether the UE sends the correctly transmitted PDU, and returns an RLC status report to the UE to notify the receiving situation.

。在上述数据传输处理中， UE和 RNC需要进行 RLC序列号信息同步，即维护一致的 RLC序列号信息，这样 RNC才有可能依据一致的 RLC序列号信息进行序列号检査。 . In the above data transmission processing, the UE and the RNC need to perform RLC sequence number information synchronization, that is, maintain the consistent RLC sequence number information, so that the RNC may perform the sequence number check according to the consistent RLC sequence number information.

3GPP协议规定 UMTS中存在 RNC迁移，指为 UE服务的 RNC从当前 RNC转换为另一个 RNC的过程，根据迁移过程 UE是否参与，将 UMTS中的 RNC迁移分为 UE 相关 (UE involved) 和 UE不相关 (UE not The 3GPP protocol stipulates that there is an RNC migration in the UMTS, and refers to a process in which the RNC serving the UE is converted from the current RNC to another RNC. According to whether the UE participates in the migration process, the RNC migration in the UMTS is classified into UE related (UE involved) and the UE does not. Related (UE not

involved) 两类，其中 UE不相关的 RNC迁移又称为静态迁移，同吋将为 UE服务的 RNC称为服务 RNC (Serving Involved in two types, where the RNC migration that is not related to the UE is also called static migration, and the RNC that will serve the UE is called the service RNC (Serving)

RNC, SRNC) ，将迁移过程中的目标 RNC称为漂移 RNC (Drift RNC, SRNC), the target RNC in the migration process is called Drift RNC (Drift

RNC, DRNC) ，迁移完成后， DRNC将成为 UE的新的服务 RNC。 RNC, DRNC), after the migration is completed, the DRNC will become the UE's new service RNC.

[8] 发明人发现，在静态迁移过程中，由于 UE并不感知静态迁移过程，因此会按照自身正常情况下的流程顺序向 RNC—侧发送 PDU序列，从而可能导致掉话。 [8] The inventor found that in the static migration process, since the UE does not perceive the static migration process, the PDU sequence is sent to the RNC-side according to the sequence of the normal operation, which may result in dropped calls.

[9] 发明内容 [9] Summary of the invention

[10] 本发明实施例提供一种静态迁移中减少用户掉话的方法， ***和装置。 [10] Embodiments of the present invention provide a method, system, and apparatus for reducing user dropped calls in static migration.

[11] 本发明实施例的技术方案是这样实现的： [11] The technical solution of the embodiment of the present invention is implemented as follows:

[12] 一种静态迁移中减少用户掉话的方法，该方法包括： [12] A method for reducing user dropped calls in static migration, the method comprising:

[13] 漂移无线网络控制器 DRNC接收服务无线网络控制器 SRNC发送的无线链路控制 RLC序列号信息； [13] Drift radio network controller DRNC receive service radio network controller SRNC sends radio link control RLC serial number information;

[14] 在静态迁移执行过程中， DRNC使用所述 RLC序列号信息处理 UE发送的协议数据单元 PDU序列。 [14] During the static migration execution, the DRNC uses the RLC sequence number information to process the protocol data unit PDU sequence sent by the UE.

[15] 一种静态迁移中减少用户掉话的***，该***包括： [16] 服务无线网络控制器 SRNC, 用于通过核心网络 CN发送 RLC序列号信息； [17] 漂移无线网络控制器 DRNC, 用于接收所述 SRNC发送的 RLC序列号信息，在静态迁移执行过程中，使用所述 SRNC发送的 RLC序列号信息处理用户终端 UE发送的 PDU序列。 [15] A system for reducing user dropped calls in static migration, the system includes: [16] The service radio network controller SRNC is configured to send the RLC sequence number information through the core network CN; [17] the drift radio network controller DRNC is configured to receive the RLC sequence number information sent by the SRNC, in the static migration execution process The PDU sequence sent by the user equipment UE is processed by using the RLC sequence number information sent by the SRNC.

[18] 一种无线网络控制器 RNC, 该 RNC包括： [18] A radio network controller RNC, the RNC includes:

[19] RRC模块，用于接收另一个 RNC发送的 RLC序列号信息，将所述 RLC序列号信息配置给本 RNC的 RLC模块； [19] an RRC module, configured to receive RLC serial number information sent by another RNC, and configure the RLC serial number information to an RLC module of the RNC;

[20] 所述 RLC模块，用于在静态迁移执行过程中，使用所述 RRC模块配置的 RLC序列号信息，处理从用户终端 UE接收到的 PDU序列。 [20] The RLC module is configured to process, according to the RLC sequence number information configured by the RRC module, the PDU sequence received from the user terminal UE during the static migration execution.

[21] 一种无线网络控制器 RNC, 该 RNC包括： [21] A radio network controller RNC, the RNC includes:

[22] 服务 RLC模块，用于提供该 RNC的无线承载所对应的 RLC序列号信息； [22] The RLC module is configured to provide RLC serial number information corresponding to the radio bearer of the RNC;

[23] 发送模块，用于将所述服务 RLC模块提供的 RLC序列号信息，通过 CN发送给静态迁移执行过程中与该 RNC相对应的漂移无线网络控制器 DRNC。 [23] The sending module is configured to send, by using the CN, the RLC serial number information provided by the serving RLC module to the drift radio network controller DRNC corresponding to the RNC during the static migration execution process.

[24] 可见，本发明实施例静态迁移中减少用户掉话的方法、 ***和装置，由 SRNC 将 RLC序列号信息提供给 DRNC, 使 DRNC与 UE在静态迁移执行过程中维护相同的 RLC序列号信息，使用该 RLC序列号信息对 UE发送的 PDU序列进行正确处理，从而不会发生将 UE正确发送的 PDU序列确定为非正确发送的情况，避免 UE出现无法执行操作的情况，从而解决用户掉话的问题，提高用户体验。 [24] It can be seen that, in the static migration of the embodiment of the present invention, the method, the system and the device for reducing the dropped call of the user are provided, and the SRNC provides the RLC serial number information to the DRNC, so that the DRNC and the UE maintain the same RLC serial number during the static migration execution process. The information is processed by using the RLC serial number information to correctly process the PDU sequence sent by the UE, so that the PDU sequence that is correctly sent by the UE is not determined to be sent incorrectly, and the UE is prevented from performing an operation, thereby solving the problem. The problem of words, improve the user experience.

[25] 附图简要说明 [25] BRIEF DESCRIPTION OF THE DRAWINGS

[26] 图 1为现有技术中的 UMTS网络结构图。 [26] FIG. 1 is a structural diagram of a UMTS network in the prior art.

[27] 图 2为本发明一实施例中 UMTS中静态迁移的原理图。 2 is a schematic diagram of static migration in a UMTS according to an embodiment of the present invention.

[28] 图 3为本发明一实施例提供的静态迁移中减少用户掉话的方法流程示意图。 FIG. 3 is a schematic flowchart of a method for reducing user dropped calls in static migration according to an embodiment of the present invention.

[29] 图 4为本发明另一实施例提供的静态迁移中减少用户掉话的方法流程示意图。 FIG. 4 is a schematic flowchart of a method for reducing user dropped calls in static migration according to another embodiment of the present invention.

[30] 图 5为本发明一实施例提供的静态迁移中减少用户掉话的***结构示意图。 FIG. 5 is a schematic structural diagram of a system for reducing user dropped calls in static migration according to an embodiment of the present invention.

[31] 图 6为本发明一实施例提供的无线网络控制器 RNC的结构示意图。 FIG. 6 is a schematic structural diagram of a radio network controller RNC according to an embodiment of the present invention.

[32] 实施本发明的方式 [32] Mode for carrying out the invention

[33] 为使本发明实施例的目的和优点更加清楚，下面结合附图对本发明实施例作进一步详细的说明。 [34] 如图 2所示，图 2为本发明实施例中 UMTS中静态迁移的原理图。图 2中左侧所示为 RNC迁移前的无线链路状态，即 UE与 SRNC之间没有无线链路，由 SRNC触发到 DRNC的迁移。图 2中右侧所示为 RNC迁移后的无线链路状态，其中的 Old SRNC为迁移前的 SRNC, 而 SRNC为迁移前的 DRNC。可以看出，在整个静态迁移过程中， UE和 UTRAN的 Uu接口连接没有变化，即 UE并不感知该迁移过程。 [33] In order to make the objects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. As shown in FIG. 2, FIG. 2 is a schematic diagram of static migration in UMTS according to an embodiment of the present invention. The left side of Figure 2 shows the status of the radio link before the RNC is migrated, that is, there is no radio link between the UE and the SRNC, and the SRNC triggers the migration to the DRNC. The right side of Figure 2 shows the radio link status after the RNC migration. The Old SRNC is the pre-migration SRNC and the SRNC is the pre-migration DRNC. It can be seen that during the entire static migration process, the Uu interface connection between the UE and the UTRAN does not change, that is, the UE does not perceive the migration process.

[35] 发明人发现，在静态迁移过程中用户可能会掉话，为方便表达，下面的分析过程以举例的方式来说明。假设在整个静态迁移过程开始之前， UE已经正确向 SR NC发送序列号为 3的 PDU序列，并收到 SRNC返回的 RLC状态报告，告知 UE已经正确发送；静态迁移执行过程中， UE将顺序向 DRNC发送序列号为 4的 PDU序列，但由于 DRNC维护的序列号信息中序列号初始值为 0，与 UE上的并未同步，因而 DRNC收到上述序列号为 4的 PDU序列之后，会判定序列号在 4之前的 PDU序列 UE没有正确发送，向 UE返回 RLC状态报告，告知 UE序列号在 4之前的 PDU序列没有正确发送，但实际上 UE已经接收过迁移前的 SRNC发送的序列号在 4之前的 PDU序列正确发送的 RLC状态报告，这吋如果重新发送序列号在 4之前的 PDU序歹 1J，将与前述已经收到的正确发送的 RLC状态报告的指示矛盾，但如果不发送序列号在 4之前的 PDU序列，又与新接收到的 RLC状态报告的指示矛盾，这吋 UE内部的 RLC模块会将 UE与 DRNC之间的 SRB和 TRB复位，造成用户掉话。 [35] The inventor found that during the static migration process, the user may drop the call. For the convenience of expression, the following analysis process is illustrated by way of example. It is assumed that before the start of the entire static migration process, the UE has correctly sent the PDU sequence with sequence number 3 to the SR NC, and receives the RLC status report returned by the SRNC, informing the UE that the UE has correctly transmitted; during the static migration execution, the UE will sequentially The DRNC sends the PDU sequence with sequence number 4. However, since the initial number of the sequence number in the sequence number information maintained by the DRNC is 0, it is not synchronized with the UE. Therefore, after receiving the PDU sequence with the sequence number 4, the DRNC determines. The PDU sequence UE whose sequence number is before 4 is not correctly transmitted, and returns an RLC status report to the UE, informing that the PDU sequence of the UE whose sequence number is before 4 is not correctly transmitted, but actually the UE has received the sequence number sent by the SRNC before the migration. The RLC status report sent correctly by the previous PDU sequence, if the PDU sequence 1J with the sequence number before 4 is retransmitted, it will contradict the indication of the correctly sent RLC status report that has been received before, but if the sequence is not sent. The PDU sequence before the number 4 is in contradiction with the indication of the newly received RLC status report, so the internal RLC module of the UE The SRB and TRB between the UE and the DRNC are reset, causing the user to drop the call.

[36] 本发明实施例中提供一种静态迁移中减少用户掉话的方法，图 3示出了该方法的流程，该方法包括以下步骤： [36] In the embodiment of the present invention, a method for reducing user dropped calls in static migration is provided, and FIG. 3 shows a flow of the method, where the method includes the following steps:

[37] 步骤 401 : DRNC接收 UE对应的 SRNC发送的 RLC序列号信息。 [37] Step 401: The DRNC receives the RLC sequence number information sent by the SRNC corresponding to the UE.

[38] 本步骤中， SRNC可以通过向 DRNC发送的消息，例如迁移请求消息，携带 RL C序列号信息。 [38] In this step, the SRNC may carry the RL C serial number information by using a message sent to the DRNC, such as a migration request message.

[39] 步骤 402: 在静态迁移执行过程中， DRNC使用所述 RLC序列号信息，处理 UE 发送的 PDU序列。 [39] Step 402: During the static migration execution process, the DRNC processes the PDU sequence sent by the UE by using the RLC sequence number information.

[40] 在 SRNC通过 CN向 DRNC发送迁移请求后， DRNC向 CN返回迁移请求响应， C N接收到该迁移请求响应后向 SRNC发送迁移命令；接着 SRNC向 DRNC发送迁移触发命令， DRNC接收到该迁移触发命令后通知 CN检测到迁移触发，并执行迁移（静态迁移），在迁移吋建立 DRNC与 UE之间的 SRB和 TRB , 用于 UE发送 PD U序列。 [40] After the SRNC sends a migration request to the DRNC through the CN, the DRNC returns a migration request response to the CN, and after receiving the migration request response, the CN sends a migration command to the SRNC; then the SRNC sends a migration trigger command to the DRNC, and the DRNC receives the migration. After the command is triggered, the CN is notified to detect the migration trigger, and the migration (static migration) is performed. After the migration, the SRB and TRB between the DRNC and the UE are established, and the UE is used to send the PD. U sequence.

[41] 本步骤中， DRNC对 UE发送的 PDU序列的处理可以由两个层完成，其中 DRNC 的 RRC层，可以使用 SRNC发送的 RLC序列号信息，对 DRNC的 RLC层进行配置；而 DRNC的 RLC层，使用上述 RRC层配置的 RLC序列号信息，对 UE发送的 PD U序列进行处理。上述 RLC层和 RRC层的功能，可以分别由 DRNC中对应的 RLC 模块和 RRC模块来完成。 [41] In this step, the DRNC processes the PDU sequence sent by the UE by two layers. The RRC layer of the DRNC can use the RLC sequence number information sent by the SRNC to configure the RNC layer of the DRNC. The RLC layer processes the PD U sequence transmitted by the UE by using the RLC sequence number information configured by the RRC layer. The functions of the foregoing RLC layer and the RRC layer may be respectively implemented by corresponding RLC modules and RRC modules in the DRNC.

[42] 本发明实施例静态迁移中减少用户掉话的方法，由 SRNC将 RLC序列号信息提供给 DRNC，使 DRNC与 UE在静态迁移执行过程中维护相同的 RLC序列号信息，使用该 RLC序列号信息能够对 UE发送的 PDU序列进行正确处理，从而不会发生将 UE正确发送的 PDU序列确定为非正确发送的情况，避免 UE出现无法执行操作的情况，从而解决了用户掉话的问题，提高了用户体验。 The method for reducing the dropped call of the user in the static migration in the embodiment of the present invention, the SRNC provides the RLC serial number information to the DRNC, so that the DRNC and the UE maintain the same RLC serial number information during the static migration execution process, and use the RLC sequence. The number information can correctly process the PDU sequence sent by the UE, so that the PDU sequence that the UE correctly transmits is not determined to be sent incorrectly, and the UE is prevented from being unable to perform the operation, thereby solving the problem of the user dropping the call. Improve the user experience.

[43] 在本发明实施例中，由于 SRNC将 RLC序列号发送给 DRNC, 在 DRNC接收到 S RNC发送的 RLC序列号后，在 DRNC上将存在两种 RLC序列号信息，其中一种是 SRNC发送的和 UE同步的 RLC序列号信息，另一种是 DRNC建立的与 UE之间的无线承载 RB'，例如建立 SRB'和 TRB'之后，建立的 SRB'和 TRB' In the embodiment of the present invention, since the SRNC sends the RLC sequence number to the DRNC, after the DRNC receives the RLC sequence number sent by the S RNC, there are two types of RLC sequence number information on the DRNC, one of which is the SRNC. The transmitted RLC sequence number information synchronized with the UE, and the other is the radio bearer RB' established between the DRNC and the UE, for example, after establishing SRB' and TRB', the established SRB' and TRB'

对应的 RLC序列号的初始值。当 DRNC向 UE发送 UTRAN移动性信息，并收到 UE 返回的确认消息之后， DRNC确认 UE上的 RLC序列号信息此吋已经与自身建立的 SRB'和 TRB'的初始值同步，这吋， DRNC可以使用同步后的 RLC序列号开始处理 UE发送的 PDU序列，而在此之前， DRNC均使用 SRNC提供的 RLC序列号信息处理 UE发送的 PDU序列。 The initial value of the corresponding RLC serial number. After the DRNC sends the UTRAN mobility information to the UE and receives the acknowledgment message returned by the UE, the DRNC confirms that the RLC sequence number information on the UE has been synchronized with the initial values of the SRB' and TRB' established by itself, and then DRNC The synchronized PDU sequence number can be used to start processing the PDU sequence sent by the UE. Before that, the DRNC processes the PDU sequence sent by the UE by using the RLC sequence number information provided by the SRNC.

[44] 如果考虑一种特殊情况，当 DRNC向 UE发送 UTRAN移动性信息之后，但还未收到 UE返回的确认之前， DRNC收到了 UE发送的 PDU序列，如果该 PDU序列的 RLC序列号正好为 0，此吋 DRNC将无法确定该 PDU序列是 UE按照之前与 SRNC 之间的序列号发送的，还是 UE按照与 DRNC上的序列号信息同步之后发送的，因此，此种情况下，按照现有的方案 DRNC会向 UE返回通知未正确发送的 RLC 状态报告，如果此 PDU序列的确是 UE按照之前与 SRNC之间的序列号发送的，将有可能引起 UE与 DRNC之间的 SRB'和 TRB'复位，造成用户掉话。 [44] If a special case is considered, after the DRNC sends the UTRAN mobility information to the UE, but has not received the acknowledgment returned by the UE, the DRNC receives the PDU sequence sent by the UE, if the RLC sequence number of the PDU sequence is just right. If it is 0, the DRNC will not be able to determine whether the PDU sequence is sent by the UE according to the serial number between the UE and the SRNC, or whether the UE synchronizes with the serial number information on the DRNC. Therefore, in this case, Some schemes DRNC will return a notification to the UE that the RLC status report was not correctly sent. If the PDU sequence is indeed sent by the UE according to the sequence number between the previous and the SRNC, it may cause SRB' and TRB between the UE and the DRNC. 'Reset, causing the user to drop the call.

[45] 基于上述特殊情况，本发明实施例还可以釆取如下实施方式：即在静态迁移执行过程中， DRNC处理 UE发送的 PDU序列之后，不向 UE返回 RLC状态报告，而在静态迁移完成之后，再恢复向 UE返回 RLC状态报告，从而最大限度的保证在静态迁移过程中不会造成用户掉话。 [45] Based on the above special case, the embodiment of the present invention can also take the following implementation manners: After the DRNC processes the PDU sequence sent by the UE, the DRNC does not return the RLC status report to the UE, and after the static migration is completed, resumes returning the RLC status report to the UE, thereby ensuring maximum protection during the static migration process. The user dropped the call.

[46] 下面介绍本发明实施例静态迁移中减少用户掉话的方法的实施例，如图 4所示，该方法包括： [46] The following describes an embodiment of a method for reducing user dropped calls in static migration according to an embodiment of the present invention. As shown in FIG. 4, the method includes:

[47] 步骤 501 : SRNC通过 CN向 DRNC发送迁移请求消息，该迁移请求消息的 RRC 容器中携带 RLC序列号信息。 [47] Step 501: The SRNC sends a migration request message to the DRNC through the CN, where the RRC container of the migration request message carries the RLC serial number information.

[48] 本步骤中，由于 SRNC是迁移开始前为 UE服务的 RNC, 因此 SRNC提供的 RLC 序列号信息与 UE中维护的 RLC序列号信息一致。 [48] In this step, since the SRNC is the RNC serving the UE before the migration starts, the RLC sequence number information provided by the SRNC is consistent with the RLC sequence number information maintained in the UE.

[49] 上述 RLC序列号信息可以包括： SRNC的 RLC层的无线承载 RB所分别对应的序列号信息，作为一种具体实施方式，本实施方式中， SRNC提供的 RLC序列号信息包括上述 SRNC的 RLC层的 RB中的 SRB 1〜SRB4和 TRB所分别对应的序列号信息，该 RLC序列号信息的参数如表一所示，表一中各参数的含义为本领域技术人员的公知常识，还可以根据实际需要对表一中所示的参数进行扩展。可以理解的是，上述 RLC序列号信息包括 SRNC的 RLC层的所有 SRB和 TRB所分别对应的序列号信息，只是在本实施方式中釆用的一种具体实施方式。在实际应用中，如果 UE只使用 SRB发送 PDU序列，或只使用 TRB发送 PDU序列，上述序列号信息也可以只包括 SRNC的 RLC层的 SRB或 TRB对应的序列号信息。 [49] The foregoing RLC serial number information may include: sequence number information corresponding to the radio bearer RBs of the RLC layer of the SRNC. As a specific implementation manner, in this embodiment, the RLC sequence number information provided by the SRNC includes the foregoing SRNC. The sequence number information corresponding to SRB 1 to SRB4 and TRB in the RB of the RLC layer is as shown in Table 1. The meaning of each parameter in Table 1 is common knowledge of those skilled in the art. The parameters shown in Table 1 can be extended according to actual needs. It can be understood that the foregoing RLC serial number information includes the serial number information corresponding to all the SRBs and TRBs of the RLC layer of the SRNC, but is a specific implementation manner used in the present embodiment. In practical applications, if the UE only uses the SRB to transmit the PDU sequence, or only uses the TRB to transmit the PDU sequence, the above sequence number information may also include only the sequence number information corresponding to the SRB or TRB of the RLC layer of the SRNC.

[51] 表一 [51] Table 1

[52] 步骤 502: DRNC的 RRC层，使用 SRNC发送的 RLC序列号信息，对 DRNC的 RL [52] Step 502: The RRC layer of the DRNC uses the RLC sequence number information sent by the SRNC to the DRNC RL.

C层增加配置。 The C layer adds configuration.

本步骤中，对应步骤 501中 SRNC提供的 RLC序列号信息，在 DRNC的 RRC层，将 RLC序列号信息配置给 DRNC的 RLC层的 SRB l'〜SRB4'和 TRB'。经过本步骤之后， DRNC中有两种序列号信息。 In this step, corresponding to the RLC sequence number information provided by the SRNC in step 501, at the RRC layer of the DRNC, The RLC sequence number information is configured to the SRBs l'~SRB4' and TRB' of the RLC layer of the DRNC. After this step, there are two serial number information in the DRNC.

[54] 步骤 503: DRNC的 RLC层通过 SRB1'〜SRB4'和 TRB'接收到 UE发送的 PDU序歹 lj，例如 RRC测量报告，判断接收到的 PDU序列的 RLC序列号，是否大于等于 R[54] Step 503: The RLC layer of the DRNC receives the PDU sequence lj sent by the UE through SRB1'~SRB4' and TRB', for example, an RRC measurement report, and determines whether the RLC sequence number of the received PDU sequence is greater than or equal to R.

RC层配置的 RLC序列号或是否等于 0，如果是，转到步骤 504，如果接收到的 PDThe RLC sequence number configured by the RC layer is equal to 0. If yes, go to step 504, if the received PD

U序列的 RLC序列号小于所述 RRC模块配置的 RLC序列号且不等于 0，丢弃 UE发送的 PDU序列，并转到步骤 505。 The RLC sequence number of the U sequence is smaller than the RLC sequence number configured by the RRC module and is not equal to 0, and the PDU sequence sent by the UE is discarded, and the process goes to step 505.

[55] 本步骤中，针对 DRNC的 RLC层的判断操作，可以举例如下。例如 DRNC的 RL[55] In this step, the judgment operation of the RLC layer of the DRNC can be exemplified as follows. Such as DRNC's RL

C层，通过 SRB1'接收到 UE发送的 PDU序列，对该 PDU序列的处理可以分为以下情况： The C layer receives the PDU sequence sent by the UE through the SRB1', and the processing of the PDU sequence can be classified into the following cases:

[56] 第一、该 PDU序列的 RLC序列号大于等于 SRB1'所配置的 RLC序列号，认为该 P DU序列为正确发送。如果等于，则说明接收到的该 PDU序列是 UE按照之前与 S RNC之间的序列号信息顺序发送的序列，将该接收的 PDU序列存储；如果当前收到的 PDU序列的 RLC序列号大于 SRB Γ所配置的 RLC序列号，由于 DRNC支持排序功能，因此可以将该接收的 PDU序列存储，如果后续接收到的 PDU序列的 R LC序列号位于上述已经接收并存储的 PDU序列的 RLC序列号之前，则对所接收的 PDU序列进行排序。 [56] First, the RLC sequence number of the PDU sequence is greater than or equal to the RLC sequence number configured by SRB1', and the PDU sequence is considered to be correctly transmitted. If it is equal, it indicates that the received PDU sequence is a sequence in which the UE sequentially transmits the sequence number information between the previous and the RNC, and the received PDU sequence is stored; if the RLC sequence number of the currently received PDU sequence is greater than the SRB RL The configured RLC sequence number, because the DRNC supports the sorting function, the received PDU sequence can be stored, if the RLC sequence number of the subsequently received PDU sequence is located before the RLC sequence number of the PDU sequence that has been received and stored. , then sort the received PDU sequence.

[57] 第二、该 PDU序列的序列号等于 0，本发明实施例认为该 PDU序列为正确发送。这是一种特殊的情况，即该 PDU序列的序列号正好与 DRNC建立 SRB1'吋对应的序列号初始值相同，此吋 DRNC也将该 PDU序列存储。 [57] Second, the sequence number of the PDU sequence is equal to 0, and the embodiment of the present invention considers that the PDU sequence is correctly transmitted. This is a special case where the sequence number of the PDU sequence is exactly the same as the initial value of the sequence number corresponding to the DRNC establishing SRB1', and the DRNC also stores the PDU sequence.

步骤 504: DRNC的 RLC层，将 UE发送的 PDU序列组成业务数据单元（Service Data Unit, SDU) 后发送给 DRNC的 RRC层。 Step 504: The RLC layer of the DRNC, the PDU sequence sent by the UE is formed into a Service Data Unit (SDU), and then sent to the RRC layer of the DRNC.

[59] 本步骤中，如果 UE发送的 PDU序列大小比 DRNC的 RLC层向 RRC层提供的 SDU 小，还可以将多个 PDU序列组成 SDU向 DRNC的 RRC层发送。 [59] In this step, if the PDU sequence size sent by the UE is smaller than the SDU provided by the RNC layer of the DRNC to the RRC layer, multiple PDU sequences may be combined into an SDU and sent to the RRC layer of the DRNC.

[60] 步骤 505: DRNC的 RLC层，在所述静态迁移完成之后，恢复向 UE返回 RLC状态报告。 [60] Step 505: The RLC layer of the DRNC resumes returning the RLC status report to the UE after the static migration is completed.

[61] 本步骤中，静态迁移完成的标志是 DRNC的 RRC层向 UE发送 UTRAN移动性信息，并收到 UE的确认。 [62] 上述步骤 502〜步骤 504描述了 DRNC如何在静态迁移执行过程中对 UE发送的 P DU序列进行处理，可以称为是特殊情况的数据传输处理过程，在该特殊情况的数据传输处理过程中，使用 SRNC发送的 RLC序列号信息处理 UE发送的 PDU序列，且在静态迁移执行过程中， DRNC处理 UE发送的 PDU序列之后，不向 UE返回 RLC状态报告。当静态迁移完成之后， DRNC中的 RLC模块结束上述特殊情况的数据传输处理过程，而恢复正常的处理流程，该正常的处理流程开始吋， DRNC 和 UE上维护的序列号信息的初始值都是 0，即正常流程开始后，停止使用 SRNC 发送的 RLC序列号信息处理 UE发送的 PDU序列，而使用上述初始值为 0的序列号信息处理 UE发送的 PDU序列，并且在处理 UE发送的 PDU序列后重新恢复向 UE 返回 RLC状态报告。 [61] In this step, the static migration completion flag is that the RRC layer of the DRNC sends the UTRAN mobility information to the UE, and receives the acknowledgement from the UE. [62] The foregoing steps 502 to 504 describe how the DRNC processes the P DU sequence sent by the UE during the static migration execution process, which may be referred to as a special case data transmission processing process, and the data transmission processing process in the special case. The PDU sequence sent by the UE is processed by using the RLC sequence number information sent by the SRNC, and after the DRNC processes the PDU sequence sent by the UE, the DRNC does not return the RLC status report to the UE. After the static migration is completed, the RLC module in the DRNC ends the data transmission process of the above special case, and resumes the normal processing flow. The normal processing flow starts, and the initial values of the serial number information maintained on the DRNC and the UE are both 0, that is, after the normal process starts, the PDU sequence sent by the UE is processed by using the RLC sequence number information sent by the SRNC, and the PDU sequence sent by the UE is processed by using the sequence number information with the initial value of 0, and the PDU sequence sent by the UE is processed. After resuming, the RLC status report is returned to the UE.

[63] 在本实施方式中， SRNC向 DRNC发送序列号信息吋，使用了已有迁移流程中的消息，保证了和现有方案的兼容性；为 DRNC建立的所有 SRB'和 TRB'都增加配置了 SRNC发送的序列号信息，使得无论 UE从哪一条无线承载发送 PDU序列，都可以防止掉话的发生；并且在静态迁移执行过程中， DRNC不向 UE返回 RLC 状态报告，从而避免了特殊情况下可能发生的掉话情况，最大限度的防止了掉话的可能性。 [63] In this embodiment, the SRNC sends the sequence number information to the DRNC, and uses the messages in the existing migration process to ensure compatibility with the existing solution; all SRB's and TRBs established for the DRNC are increased. The sequence number information sent by the SRNC is configured so that no matter which radio bearer the PDU sequence is sent by the UE, the occurrence of dropped calls can be prevented; and during the static migration execution, the DRNC does not return the RLC status report to the UE, thereby avoiding special In the case of possible dropped calls, the possibility of dropped calls is prevented to the utmost extent.

[64] 下面，介绍本发明实施例静态迁移中减少用户掉话的***，图 5示出了该*** 的示意结构，该***中包括： [64] In the following, a system for reducing user dropped calls in static migration according to an embodiment of the present invention is introduced. FIG. 5 shows a schematic structure of the system, where the system includes:

[65] UE对应的 SRNC, 用于通过核心网络 CN向 DRNC发送 RLC序列号信息。 [65] The SRNC corresponding to the UE is used to send the RLC serial number information to the DRNC through the core network CN.

[66] DRNC, 用于在静态迁移执行过程中使用所述 SRNC发送的 RLC序列号信息，处理 UE发送的 PDU序列。 [66] The DRNC is configured to process the PDU sequence sent by the UE by using the RLC sequence number information sent by the SRNC during the static migration execution.

[67] CN, 用于连接所述 SRNC与所述 DRNC。 [67] CN, configured to connect the SRNC and the DRNC.

[68] 本发明实施例静态迁移中减少用户掉话的***，由 SRNC将 RLC序列号信息提供给 DRNC，使 DRNC与 UE在静态迁移执行过程中维护相同的 RLC序列号信息，使用该 RLC序列号信息对 UE发送的 PDU序列进行正确处理，从而不会发生将 UE 正确发送的 PDU序列确定为非正确发送的情况，避免 UE出现无法执行操作的情况，从而解决了用户掉话的问题。 In the system of the present invention, the system reduces the number of dropped calls of the user in the static migration, and the SRNC provides the RLC serial number information to the DRNC, so that the DRNC and the UE maintain the same RLC serial number information during the static migration execution process, and use the RLC sequence. The number information is correctly processed by the PDU sequence sent by the UE, so that the PDU sequence that the UE correctly transmits is not determined to be sent incorrectly, and the UE is prevented from performing an operation, thereby solving the problem of the user dropping the call.

[69] 上述***中的 SRNC, 可以包括：第一 RLC模块和发送模块。 [70] 第一 RLC模块，用于提供该 SRNC自身的 RB所分别对应的 RLC序列号信息。 [69] The SRNC in the above system may include: a first RLC module and a sending module. [70] The first RLC module is configured to provide RLC sequence number information corresponding to the RBs of the SRNC itself.

[71] 发送模块，用于将所述第一 RLC模块提供的 RLC序列号信息，携带在迁移请求消息中，通过 CN向所述 DRNC发送。 [71] The sending module is configured to carry the RLC serial number information provided by the first RLC module in the migration request message, and send the information to the DRNC by using the CN.

[72] 上述***中的 DRNC, 可以包括： RRC模块和第二 RLC模块。 [72] The DRNC in the above system may include: an RRC module and a second RLC module.

[73] RRC模块，用于接收静态迁移执行过程中 SRNC发送的 RLC序列号信息，将所述 RLC序列号信息配置给所述第二 RLC模块。 [73] The RRC module is configured to receive RLC sequence number information sent by the SRNC during the static migration execution, and configure the RLC sequence number information to the second RLC module.

[74] 第二 RLC模块，用于在静态迁移执行过程中，使用所述 RRC模块配置的 RLC序列号信息，处理接收到的 PDU序列。 [74] The second RLC module is configured to process the received PDU sequence by using the RLC sequence number information configured by the RRC module during the static migration execution.

[75] 上述第二 RLC模块可以包括：无线承载单元、判定处理单元和状态报告单元。 [75] The foregoing second RLC module may include: a radio bearer unit, a decision processing unit, and a status reporting unit.

[76] 无线承载单元，用于通过 DRNC的无线承载接收 UE发送的 PDU序列，所述 DRN[76] a radio bearer unit, configured to receive, by using a radio bearer of the DRNC, a PDU sequence sent by the UE, where the DRN

C的无线承载对应的 RLC序列号信息由 RRC模块配置。 The RLC sequence number information corresponding to the radio bearer of C is configured by the RRC module.

[77] 判定处理单元，用于确定无线承载单元接收到的 PDU序列的 RLC序列号是否大于等于所述 RRC模块配置的 RLC序列号或者等于 0，如果是，将所述 PDU序列组成服务数据单元 SDU序列发送给所述 RRC模块；如果接收到的 PDU序列的 RLC序列号小于所述 RRC模块配置的 RLC序列号且不等于 0，将所述接收到的 PDU序列丢弃。 [77] a determining processing unit, configured to determine whether an RLC sequence number of the PDU sequence received by the radio bearer unit is greater than or equal to an RLC sequence number configured by the RRC module, or equal to 0. If yes, the PDU sequence is formed into a service data unit. The SDU sequence is sent to the RRC module; if the RLC sequence number of the received PDU sequence is smaller than the RLC sequence number configured by the RRC module and is not equal to 0, the received PDU sequence is discarded.

[78] 状态报告单元，用于在所述静态迁移完成之后，恢复向 UE发送 RLC状态报告 [78] a status reporting unit, configured to resume sending an RLC status report to the UE after the static migration is completed.

[79] 在将本发明实施例提供的***进一步划分之后，在静态迁移执行过程中， DRN[79] After further dividing the system provided by the embodiment of the present invention, during the static migration execution process, the DRN

C不向 UE返回 RLC状态报告，从而考虑了特殊情况下可能发生的掉话情况，最大限度的防止了掉话的可能性。 C does not return an RLC status report to the UE, thereby taking into account possible dropped calls in special circumstances, and maximally preventing the possibility of dropped calls.

[80] 下面，介绍本发明实施例静态迁移中减少用户掉话的装置，例如该装置可以是一种 RNC, 如图 6所示为本实施例该 RNC的结构示意图，该 RNC包括 RRC模块和[00] In the following, the device for reducing the dropped call of the user in the static migration of the embodiment of the present invention is introduced. For example, the device may be an RNC. As shown in FIG. 6, the RNC includes the RRC module and the RNC.

RLC模块： RLC module:

[81] RRC模块，用于接收 SRNC发送的 RLC序列号信息，将所述 RLC序列号信息配置给所述 RNC的 RLC模块。 [81] The RRC module is configured to receive RLC sequence number information sent by the SRNC, and configure the RLC sequence number information to the RLC module of the RNC.

[82] RLC模块，用于在静态迁移执行过程中，使用所述 RRC模块配置的 RLC序列号信息，处理接收到的 UE发送的 PDU序列。 [83] 本发明实施例提供的 RNC，在执行 DRNC功能吋，由 RRC模块接收其对应的 SR NC发送的 RLC序列号信息，并配置给 RLC模块，由 RLC模块使用 RRC模块配置的 RLC序列号信息正确处理 UE发送的 PDU序列，从而不会发生将 UE正确发送的 PDU序列确定为非正确发送的情况，避免 UE出现无法执行操作的情况，从而解决了用户掉话的问题。 [82] The RLC module is configured to process the received PDU sequence sent by the UE by using the RLC sequence number information configured by the RRC module during the static migration. The RNC provided by the embodiment of the present invention, after performing the DRNC function, receives the RLC sequence number information sent by the corresponding SR NC by the RRC module, and configures the information to the RLC module, and the RLC module uses the RLC serial number configured by the RRC module. The information correctly processes the PDU sequence sent by the UE, so that the PDU sequence that the UE correctly transmits is not determined to be sent incorrectly, and the UE is prevented from being unable to perform the operation, thereby solving the problem that the user is dropped.

[84] 上述本发明实施例提供的 RNC中的 RLC模块可以包括：无线承载单元、判定处理单元和状态报告单元。 The RLC module in the RNC provided by the foregoing embodiment of the present invention may include: a radio bearer unit, a decision processing unit, and a status reporting unit.

[85] 无线承载单元，用于通过 DRNC的无线承载接收 UE发送的 PDU序列，所述 DRN C的无线承载对应的 RLC序列号信息由 RRC模块配置； [85] a radio bearer unit, configured to receive, by using a radio bearer of the DRNC, a PDU sequence sent by the UE, where the RLC sequence number information corresponding to the radio bearer of the DRN C is configured by the RRC module;

[86] 判定处理单元，用于确定所述无线承载单元接收到的 PDU序列的 RLC序列号是否大于等于所述 RRC模块配置的 RLC序列号或者等于 0，如果是，将所述 PDU序列组成服务数据单元 SDU序列发送给所述 RRC模块；如果接收到的 PDU序列的 R LC序列号小于所述 RRC模块配置的 RLC序列号且不等于 0，将所述接收到的 PDU 序列丢弃。 [86] a determining processing unit, configured to determine whether an RLC sequence number of the PDU sequence received by the radio bearer unit is greater than or equal to an RLC sequence number configured by the RRC module, or equal to 0. If yes, the PDU sequence is formed into a service. The data unit SDU sequence is sent to the RRC module; if the RLC sequence number of the received PDU sequence is smaller than the RLC sequence number configured by the RRC module and is not equal to 0, the received PDU sequence is discarded.

[87] 状态报告单元，用于在所述静态迁移完成之后，恢复向 UE发送 RLC状态报告 [87] a status reporting unit, configured to resume sending an RLC status report to the UE after the static migration is completed

[88] 或者，在本发明实施例提供的 RNC在另外一个静态迁移执行过程中作为 SRNC 吋，该 RNC还可以包括：服务 RLC模块和发送模块。 [00] Alternatively, the RNC provided in the embodiment of the present invention may be used as a SRNC in another static migration execution process, and the RNC may further include: a service RLC module and a sending module.

[89] 服务 RLC模块，用于提供作为 SRNC吋无线承载 RB所分别对应的 RLC序列号信息。 [89] Service RLC module, which is used to provide RLC serial number information corresponding to the SRNC吋 radio bearer RB.

[90] 发送模块，用于将所述服务 RLC模块提供的 RLC序列号信息，携带在迁移请求消息中，通过 CN [90] a sending module, configured to carry the RLC serial number information provided by the serving RLC module in the migration request message, by using CN

发送给该另外一个静态迁移执行过程中的 DRNC, 所述另外一个静态迁移执行过程中的 DRNC与该作为 SRNC的 RNC所相应。 The DRNC is sent to the other static migration execution process, and the DRNC in the other static migration execution process corresponds to the RNC as the SRNC.

[91] 本领域普通技术人员可以理解，实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一计算机可读存储介质中。该可读可读存储介质例如只读存储器（简称 ROM) 、随机存取存储器 (简称 RAM) 、磁盘、光盘等。 [92] 以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。 It will be understood by those skilled in the art that all or part of the steps of the above embodiments may be implemented by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. The readable and readable storage medium is, for example, a read only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, or the like. The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily think of within the technical scope disclosed by the present invention. Changes or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

权利要求书 Claim

[1] 一种静态迁移中减少用户掉话的方法，其特征在于，该方法包括： [1] A method for reducing user dropped calls in static migration, characterized in that the method comprises:

漂移无线网络控制器 DRNC接收服务无线网络控制器 SRNC发送的无线链路控制 RLC序列号信息； Drift radio network controller DRNC receive service radio network controller SRNC sends radio link control RLC serial number information;

在静态迁移执行过程中， DRNC使用所述 RLC序列号信息处理 UE发送的协议数据单元 PDU序列。 During the static migration execution, the DRNC uses the RLC sequence number information to process the protocol data unit PDU sequence sent by the UE.

[2] 如权利要求 1所述的方法，其特征在于，所述 DRNC接收 SRNC发送的 RLC 序列号信息包括： [2] The method according to claim 1, wherein the receiving, by the DRNC, the RLC sequence number information sent by the SRNC comprises:

所述 DRNC接收所述 SRNC发送的迁移请求消息，所述迁移请求消息的无线资源控制 RRC容器中携带所述 RLC序列号信息，所述 RLC序列号信息为所述 SRNC的 RLC层无线承载所对应的 RLC序列号信息。 The DRNC receives the migration request message sent by the SRNC, where the radio resource control RRC container of the migration request message carries the RLC sequence number information, where the RLC sequence number information is corresponding to the RLC layer radio bearer of the SRNC. RLC serial number information.

[3] 如权利要求 2所述的方法，其特征在于，所述 DRNC使用 RLC序列号信息处理 UE发送的 PDU序列包括： [3] The method according to claim 2, wherein the DRNC processing the PDU sequence sent by the UE by using the RLC sequence number information includes:

DRNC的 RRC层，将所述 SRNC发送的 RLC序列号信息配置给 DRNC的 RLC 层的无线承载； The RRC layer of the DRNC configures the RLC sequence number information sent by the SRNC to the radio bearer of the RLC layer of the DRNC;

DRNC的 RLC层，使用所述 DRNC的 RRC层配置的 RLC序列号信息，处理 U E发送的 PDU序列。 The RLC layer of the DRNC processes the PDU sequence transmitted by the U E by using the RLC sequence number information of the RRC layer configuration of the DRNC.

[4] 如权利要求 3所述的方法，其特征在于，所述 DRNC的 RLC层处理 UE发送的 [4] The method according to claim 3, wherein the RLC layer of the DRNC processes the UE

PDU序列包括： The PDU sequence includes:

DRNC的 RLC层通过所述 DRNC的无线承载接收 UE发送的 PDU序列，确定该 PDU序列的序列号是否大于等于所述 DRNC的 RRC层配置的 RLC序列号或者等于 0; 如果是，将所述 PDU序列组成服务数据单元 SDU序列发送到所述 DRNC的 RRC层；如果接收到的 PDU序列的 RLC序列号小于所述 RRC模块配置的 RLC序列号且不等于 0，则将所述接收到的 PDU序列丢弃。 The RLC layer of the DRNC receives the PDU sequence sent by the UE by using the radio bearer of the DRNC, and determines whether the sequence number of the PDU sequence is greater than or equal to the RLC sequence number of the RRC layer configured by the DRNC or equal to 0; if yes, the PDU is The sequence component service data unit SDU sequence is sent to the RRC layer of the DRNC; if the RLC sequence number of the received PDU sequence is smaller than the RLC sequence number configured by the RRC module and is not equal to 0, the received PDU sequence is throw away.

[5] 如权利要求 1至 4中任一项所述的方法，其特征在于，所述方法还包括：在静态迁移完成之后， DRNC的 RLC层向 UE返回 RLC状态报告。 [5] The method according to any one of claims 1 to 4, wherein the method further comprises: after the static migration is completed, the RLC layer of the DRNC returns an RLC status report to the UE.

[6] 一种静态迁移中减少用户掉话的***，其特征在于，该***包括： [6] A system for reducing user dropped calls in static migration, characterized in that the system comprises:

服务无线网络控制器 SRNC, 用于通过核心网络 CN发送 RLC序列号信息；漂移无线网络控制器 DRNC, 用于接收所述 SRNC发送的 RLC序列号信息，在静态迁移执行过程中，使用所述 SRNC发送的 RLC序列号信息处理用户终端 UE发送的 PDU序列。 a serving radio network controller SRNC, configured to send RLC serial number information through a core network CN; The drift radio network controller DRNC is configured to receive the RLC sequence number information sent by the SRNC, and process the PDU sequence sent by the user equipment UE by using the RLC sequence number information sent by the SRNC during the static migration execution.

[7] 如权利要求 6所述的***，其特征在于，所述 SRNC包括： [7] The system of claim 6, wherein the SRNC comprises:

第一 RLC模块，用于提供该 SRNC的无线承载所对应的 RLC序列号信息；发送模块，用于将所述第一 RLC模块提供的 RLC序列号信息通过 CN向所述 DRNC发送。 a first RLC module, configured to provide RLC serial number information corresponding to the radio bearer of the SRNC, and a sending module, configured to send the RLC serial number information provided by the first RLC module to the DRNC by using the CN.

[8] 如权利要求 6所述的***，其特征在于，所述 DRNC包括： [8] The system of claim 6, wherein the DRNC comprises:

_RRC模块，用于接收 SRNC发送的 RLC序列号信息，将所述 RLC序列号信息配置给第二 RLC模块； _{An RRC} module, configured to receive RLC serial number information sent by the SRNC, and configure the RLC serial number information to the second RLC module;

第二 RLC模块，用于在静态迁移执行过程中，使用所述 RRC模块配置的 RL C序列号信息，处理 UE发送的 PDU序列。 The second RLC module is configured to process the PDU sequence sent by the UE by using the RL C sequence number information configured by the RRC module during the static migration execution.

[9] 如权利要求 8所述的***，其特征在于，所述第二 RLC模块包括： [9] The system of claim 8, wherein the second RLC module comprises:

无线承载单元，用于通过 DRNC的无线承载接收 UE发送的 PDU序列，所述 DRNC的无线承载对应的 RLC序列号信息由 RRC模块配置；判定处理单元，用于确定所述无线承载单元接收到的 PDU序列的 RLC序列号是否大于等于所述 RRC模块配置的 RLC序列号或者等于 0，如果是，将所述 PDU序列组成服务数据单元 SDU序列发送给所述 RRC模块，如果接收到的 PDU序列的 RLC序列号小于所述 RRC模块配置的 RLC序列号且不等于 0，则将所述接收到的 PDU序列丢弃。 a radio bearer unit, configured to receive, by using a radio bearer of the DRNC, a PDU sequence that is sent by the UE, where the RLC sequence number information corresponding to the radio bearer of the DRNC is configured by the RRC module, and a determining processing unit, configured to determine, by the radio bearer unit, Whether the RLC sequence number of the PDU sequence is greater than or equal to the RLC sequence number configured by the RRC module or equal to 0. If yes, the PDU sequence is formed into a service data unit SDU sequence, and if the received PDU sequence is If the RLC sequence number is smaller than the RLC sequence number configured by the RRC module and is not equal to 0, the received PDU sequence is discarded.

[10] 如权利要求 9所述的***，其特征在于，所述第二 RLC模块还包括： [10] The system of claim 9, wherein the second RLC module further comprises:

状态报告单元，用于在静态迁移完成之后，恢复向 UE发送 RLC状态报告。 The status reporting unit is configured to resume sending an RLC status report to the UE after the static migration is completed.

[11] 一种无线网络控制器 RNC, 其特征在于，该 RNC包括： [11] A radio network controller RNC, characterized in that the RNC comprises:

_RRC模块，用于接收另一个 RNC发送的 RLC序列号信息，将所述 RLC序列号信息配置给本 RNC的 RLC模块； _{An RRC} module, configured to receive RLC serial number information sent by another RNC, and configure the RLC serial number information to an RLC module of the RNC;

所述 RLC模块，用于在静态迁移执行过程中，使用所述 RRC模块配置的 RL C序列号信息，处理从用户终端 UE接收到的 PDU序列。 The RLC module is configured to process, according to the RL C sequence number information configured by the RRC module, the PDU sequence received from the user terminal UE during the static migration execution.

[12] 如权利要求 11所述的 RNC, 其特征在于，所述 RLC模块包括：无线承载单元，用于通过本 RNC的无线承载接收 UE发送的 PDU序列，所述本 RNC的无线承载对应的 RLC序列号信息由 RRC模块配置；判定处理单元，用于确定所述无线承载单元接收到的 PDU序列的 RLC序列号是否大于等于所述 RRC模块配置的 RLC序列号或者等于 0，如果是，将所述 PDU序列组成服务数据单元 SDU序列发送给所述 RRC模块，如果接收到的 PDU序列的 RLC序列号小于所述 RRC模块配置的 RLC序列号且不等于 0，则将所述接收到的 PDU序列丢弃。 [12] The RNC according to claim 11, wherein the RLC module comprises: a radio bearer unit, configured to receive, by using a radio bearer of the RNC, a PDU sequence sent by the UE, where the RLC sequence number information corresponding to the radio bearer of the local RNC is configured by an RRC module, and a determining processing unit, configured to determine, by the radio bearer, Whether the RLC sequence number of the received PDU sequence is greater than or equal to the RLC sequence number configured by the RRC module or equal to 0. If yes, the PDU sequence is formed into a service data unit SDU sequence and sent to the RRC module, if the received PDU If the RLC sequence number of the sequence is smaller than the RLC sequence number configured by the RRC module and is not equal to 0, the received PDU sequence is discarded.

[13] 如权利要求 12所述的 RNC, 其特征在于，所述 RLC模块还包括： [13] The RNC of claim 12, wherein the RLC module further comprises:

状态报告单元，用于在所述静态迁移完成之后，恢复向 UE发送 RLC状态报 a status reporting unit, configured to resume sending an RLC status report to the UE after the static migration is completed.

[14] 如权利要求 11所述的 RNC, 其特征在于，本 RNC在另一静态迁移执行过程中作为 SRNC吋，还包括： [14] The RNC according to claim 11, wherein the RNC is a SRNC in another static migration execution process, and further includes:

服务 RLC模块，用于提供作为 SRNC吋的无线承载所对应的 RLC序列号信息发送模块，用于将所述服务 RLC模块提供的 RLC序列号信息，通过 CN发送给该另一静态迁移执行过程中的漂移无线网络控制器 DRNC。 a serving RLC module, configured to provide an RLC serial number information sending module corresponding to the radio bearer of the SRNC, for transmitting the RLC serial number information provided by the serving RLC module to the another static migration execution process by using the CN Drift Wireless Network Controller DRNC.

[15] 一种无线网络控制器 RNC, 其特征在于，该 RNC包括： [15] A radio network controller RNC, characterized in that the RNC comprises:

服务 RLC模块，用于提供该 RNC的无线承载所对应的 RLC序列号信息；发送模块，用于将所述服务 RLC模块提供的 RLC序列号信息，通过 CN发送给静态迁移执行过程中与该 RNC相对应的漂移无线网络控制器 DRNC。 a serving RLC module, configured to provide RLC serial number information corresponding to the radio bearer of the RNC, and a sending module, configured to send the RLC serial number information provided by the serving RLC module to the static migration execution process and the RNC Corresponding drift wireless network controller DRNC.