WO2011160360A1 - 一种用户设备及连接释放异常的处理方法 - Google Patents

一种用户设备及连接释放异常的处理方法 Download PDF

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Publication number
WO2011160360A1
WO2011160360A1 PCT/CN2010/077717 CN2010077717W WO2011160360A1 WO 2011160360 A1 WO2011160360 A1 WO 2011160360A1 CN 2010077717 W CN2010077717 W CN 2010077717W WO 2011160360 A1 WO2011160360 A1 WO 2011160360A1
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Prior art keywords
user equipment
layer
connection release
rrc
link failure
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PCT/CN2010/077717
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English (en)
French (fr)
Inventor
马海蓉
卢忱
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中兴通讯股份有限公司
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Publication of WO2011160360A1 publication Critical patent/WO2011160360A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release

Definitions

  • the present invention relates to the field of mobile communications, and more particularly to a user equipment and a method for processing a connection release exception.
  • connection release process in the communication refers to the release of the connection established under the RRC (Radio Resource Control), including the UE (User Equipment) and the UTRAN (Universal Terrestrial Radio Access Network).
  • RRC Radio Resource Control
  • UE User Equipment
  • UTRAN Universal Terrestrial Radio Access Network
  • the UTRAN detects a loss of the proprietary physical channel
  • the UTRAN does not receive the RRC Connection Release Complete message.
  • the UE when an RRC connection release abnormality occurs, the UE releases all radio resources, releases all established signaling connections and radio access bearers, clears some variable values, and enters an idle mode. Before entering the idle mode, the terminal will proceed to the idle mode preparation, such as cell selection, according to the abnormal situation. Wherein, in the RLC unacknowledged mode, the timer T308 overflows, the UE increments the counter V308, and if V308 is less than or equal to the variable value N308 (the value is obtained according to the system message), the UE will use the radio bearer (RB). 1 Retransmit the RRC Connection Release message and start the timer T308 again.
  • V308 is greater than ⁇ 308, the UE will release all radio resources directly, release all signaling connections and radio access bearers, clear the variable values, and enter idle mode. Similarly, the UE also needs to try to camp on a suitable cell when entering the idle mode. According to the test analysis, after the timer ⁇ 308 overflows, by adding the counter V308 to 1, the connection release process has a low success rate. Basically it is into the exception handling mechanism.
  • the existing processing mode is that after the terminal connection is released abnormally, the cell selection is always performed before entering the idle mode. This method is inflexible and takes less time. In view of this, the industry urgently needs a processing method in which the connection release process is abnormal, which can ensure that the UE accesses the network more stably.
  • the main technical problem to be solved by the present invention is to provide a processing method for the user equipment and the connection release abnormality, which can flexibly handle the abnormal situation and ensure that the UE accesses the network more stably.
  • a method for handling a connection release exception includes the following steps:
  • the lower layer of the user equipment determines the cause of the abnormality, and sends a connection with the link failure cause value corresponding to the abnormal reason to the Radio Resource Control Protocol (RRC) layer in the user equipment. Release exception information;
  • the RRC layer of the user equipment controls the lower layer of the user equipment to perform a corresponding operation according to the link failure reason value carried in the connection release abnormality information.
  • the lower layer of the user equipment includes a physical layer and a control layer including a MAC and an RLC.
  • the link failure cause value includes one or more of the following: loss synchronization from the physical layer, interpretation failure from the physical layer, data link layer failure from the control layer, and from The control layer's waiting for confirmation is lost.
  • the RRC layer of the user equipment controls the lower layer of the user equipment to perform the corresponding operation according to the link failure reason value carried in the connection release exception information, as follows:
  • the user equipment releases all resources, releases the signaling connection and the radio access bearer, and enters the idle mode, and,
  • the user equipment When the link failure cause value is loss synchronization, the user equipment immediately performs cell selection, searches for a suitable cell for synchronization, and camps on the cell; when the link failure reason value is an interpretation loss If the user equipment fails to perform cell reselection, the physical layer searches for a suitable cell, and then synchronizes, interprets, and resides in the system message; when the link fails, the reason is that the data link layer fails or waits for confirmation. If the user equipment determines whether to perform cell selection or cell reselection, it first attempts to change the current serving cell by using the task in the idle mode.
  • the method further includes: when the user equipment performs the connection release process in the RLC unacknowledged mode, if the RRC layer detects that the value V308 in the T308 timer is greater than the variable value N308 divided by 2, then the user The device will release all radio resources directly, release all signaling connections and radio access bearers, clear the variable values, enter idle mode, and enter the idle mode, and the user equipment immediately performs cell reselection.
  • the user equipment is time division synchronous code division multiple access
  • TD-SCDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • multimode terminal with TD-SCDMA mode or WCDMA mode.
  • the present invention also provides a user equipment, where the user equipment includes a configuration module, a low layer execution module, and a radio resource control protocol (RRC) layer control module.
  • the user equipment includes a configuration module, a low layer execution module, and a radio resource control protocol (RRC) layer control module.
  • RRC radio resource control protocol
  • the configuration module is configured to: configure a link failure cause value
  • the low-level execution module is configured to determine the cause of the abnormality when the connection of the user equipment is abnormal, and report the connection release abnormality information carrying the link failure cause value corresponding to the abnormal cause to the RRC layer control module;
  • the RRC layer control module is configured to control the low-level execution module to perform a corresponding operation according to the link failure cause value carried in the connection release abnormality information.
  • the user equipment is a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) terminal, a Wideband Code Division Multiple Access (WCDMA) terminal, or a multimode terminal having a TD-SCDMA mode or a WCDMA mode.
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • multimode terminal having a TD-SCDMA mode or a WCDMA mode.
  • the low-level execution module of the user equipment includes: a physical layer execution module and a control layer execution module including a medium access control layer (MAC) and a radio link control layer (RLC).
  • MAC medium access control layer
  • RLC radio link control layer
  • the link failure cause value includes one or more of the following: loss synchronization from the physical layer, interpretation failure from the physical layer, data link layer failure from the control layer, and waiting for confirmation from the control layer are lost.
  • the beneficial effects of the present invention are: by configuring the link failure cause value, releasing the connection on the user equipment
  • the abnormality is determined by the lower layer of the user equipment, and the connection release abnormality information carrying the link failure cause value corresponding to the abnormal cause is reported to the RRC layer in the user equipment; the RRC layer controls the lower layer according to the link failure cause value.
  • the corresponding operations are performed to implement different processing for different abnormal situations, so that the processing manner is more flexible, and the processing efficiency is effectively improved, so that the user equipment can access the network more stably.
  • FIG. 1 is a schematic diagram of a protocol stack module of a mobile terminal according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a process flow of a UE in a case where a radio link fails in a specific embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a process in a case where a timer T308 overflows according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a user equipment according to an embodiment of the present invention
  • the user equipment is a time division synchronous code division multiple access (TD-SCDMA) mobile terminal, a wideband code division multiple access (WCDMA) mobile terminal, or has a TD. - SCDMA mode or multimode mobile terminal with WCDMA mode.
  • TD-SCDMA time division synchronous code division multiple access
  • WCDMA wideband code division multiple access
  • layer 1 is the physical layer (Phys i ca l Layer) 11; layer 2 is the control layer, including the medium access control layer (MAC) 12 and RLC1 3; RRC14 Layer 3 controls the lower layers to establish and release radio resources.
  • the UE lower layer determines the cause of the connection release abnormality, and adds a specific link failure cause value corresponding to the connection release abnormality cause to the connection release abnormality information reported to the RRC layer.
  • timer T308 overflow in RLC unacknowledged mode when the connection release process is performed, in the RLC unacknowledged mode, if the RRC detects that V308 in the timer T308 is greater than N308/ 2, the UE will directly release All radio resources, release all signaling connections and radio access bearers, clear the variable values, and enter idle mode. While entering the idle mode, the UE needs to perform cell reselection immediately, thereby obtaining a better cell and reducing the failure rate of link establishment.
  • the RRC layer determines different actions of the UE according to different received cause values:
  • the UE When the reason for the abnormality of the connection release reported by the lower layer is indicated as the layer 1 loss synchronization, the UE will consider that the capability of successfully decoding the system information of the cell has been lost, and the UE will release all resources, release the signaling connection and the radio access bearer. And enter idle mode. Since the physical layer of the UE loses synchronization at this time, cell selection should be performed immediately after entering the idle mode, so that the physical layer finds a suitable cell, and then synchronizes and camps on the cell.
  • the UE When the reason for the connection release abnormality reported by the lower layer indicates that the interpretation of layer 1 fails, the UE will consider that the power of the serving cell is low or does not meet the requirements, then the UE will release all resources, release signaling connection and wireless access. Host, and enter idle mode. The UE in idle mode will decide whether to perform cell selection or cell reselection according to the connection release abnormality indication value. Since the physical layer of the UE only considers that the power of the current serving cell is low, but the neighbor cell information obtained from the serving cell should be correct, the UE should immediately perform cell reselection while entering the idle mode, so that the physical layer searches for The appropriate cell, then synchronized, interprets the system message and resides on the cell.
  • the UE When the lower-layer reported connection release abnormality causes the specific cause value to indicate that the data link layer of layer 1 fails or waits for the acknowledgement loss, the UE will consider that it is unable to interact with the peer of the serving cell, then The UE will release all resources, release the signaling connection and the radio access bearer, and enter the idle mode. The UE in the idle mode will decide whether to perform cell selection or cell reselection according to the connection release abnormality indication value. However, at this time, the physical layer of the UE can still complete the task in the idle mode. At this time, the UE will not perform cell selection or cell reselection immediately, but change the current serving cell through tasks in the idle mode, such as measurement.
  • Step 201 The RRC receives an abnormality message.
  • Step 202 The RRC determines the abnormal message cause value according to the received abnormal message, and triggers The following actions:
  • Unsynchronized Late 1 Loss Synchronization: The RRC will request the RLC to release the radio resource bearer, release the dedicated channel, and the MAC enters the synchronization state. Then the RRC indicates to the upper layer that the established signaling connection and the radio access bearer are released (released). Low-level resources); Clear the variable value to establish the signal connection (ESABLISHED-SIGNALLING. CONNECTIONS), record the status of the established RB (ESTABLISHED- RABS); RRC enters the idle mode; at this time, RRC requests the physical layer to perform the cell selection process to find a suitable one. The cell is camped on.
  • RRC will release all signaling connections and radio resources, then RRC indicates to the upper layer that the resource has been released (release the low-level resources); Clear the variables ESTABLISHED-RABS, ESTABLISHED-SIGNALLING-CONNECTIONS; RRC Entering the idle mode; the failure is due to the low power of the cell, the UE is abnormal in the interpretation message, and the radio link fails (that is, the connection is released abnormally). At this time, the RRC will request the lower layer to perform the cell reselection process. The information comes from the system message of the current serving cell.
  • Layer 2 data link layer fails or waits for acknowledgement loss: RRC will release RLC directly (equivalent to "release low-level resources” or “release all resources” because the only exception “the occurrence of T380 overflow” is solved synchronously) Then, the RRC upper layer indicates to the upper layer that the established signaling connection and the radio access bearer are released; the variables ESTABLISHED_SIGNALLING_CO ⁇ ECTI0NS, ESTABLISHED-RABS are cleared, and the RRC enters the idle mode; the failure is due to the RRC being unable to obtain the RLC release confirmation. The abnormal situation caused by the information. At this time, the RRC will not trigger the selection of the new cell immediately, but resides on the current serving cell and issues the idle mode task.
  • ErrorType / / error cause of LI In the present invention, IE ⁇ ErrorType> in the information indicates the cause value of the specific failure: 0, hardware failure (hardware fa i lure); 1, layer 1 interpretation message failure (no decode); 2: wireless link failure (no radiol ink ) ; 3 , not synchronized (no sync ). (From the cause value indicated upwards, it can be known as the cause of the failure) Through them, the RRC will perform different actions into the idle mode.
  • the cause value of the layer 2 failure is indicated in the CRLC ERROR IND.
  • the basic structure of the message is as follows:
  • IE ⁇ ErrorType> in the information indicates the cause value of the specific failure, 0: data link layer failure (fa il 12 ); 1: waiting for confirmation loss (no response); 2: unknown data (wrong Da ta ). Through them, the RRC will perform different actions into the idle mode.
  • FIG. 3 shows a process flow after the UE overflows the timer T308 in the preferred embodiment, where the UE is
  • Step 301 After the RRC CONNECTION RELEASE COMPLETE message is sent in the CELL-DCH state, step 301 is performed, step 301 is started, and timer T308 is started.
  • Step 302 When T308 times out, it is determined that the number of message retransmissions V308 is automatically incremented by one; 303. Determine whether V308 is greater than N308/2 (the setting of N308 is brought to the UE in the RRC CONNECTION RELEASE message); if not, resend the RRC CONNECTION RELEASE COMPLETE message (connection release complete message), and go to step 301; otherwise, go to step 304.
  • Step 304 Release the radio resource;
  • Step 305 Enter the idle mode.
  • the terminal can release the link as soon as possible, enter the idle, and reduce the time for unnecessary abnormal connection release.
  • FIG. 4 is a schematic diagram of main software modules in a specific embodiment of the user equipment of the present invention.
  • the user equipment is a communication device, and includes a configuration module 41, a low layer execution module 42, and an RRC layer control module 43.
  • the configuration module is configured to configure a link failure cause value;
  • the low-level execution module is configured to determine an abnormal cause when the user equipment connection is abnormally released, and control the RRC layer.
  • the module reports the connection release abnormality information carrying the link failure cause value corresponding to the abnormal cause;
  • the RRC layer control module is configured to control the low-level execution module to perform a corresponding action according to the link failure cause value carried in the connection release abnormality information.
  • the user equipment may be a TD-SCDMA terminal, a WCDMA terminal, or a multimode terminal having a TD-SCDMA mode or a WCDMA mode.
  • the lower layer execution module 42 of the user equipment includes a physical layer execution module 421 and a control layer execution module 422, and the control layer execution module includes a MAC and an RLC.
  • the processing method for the connection release exception of the user equipment is the same as described above.
  • the user equipment and the connection release abnormality processing method provided by the present invention by configuring the link failure cause value, when the user equipment connection is released abnormally, the abnormality is determined by the lower layer of the user equipment, and is reported to the RRC layer of the user equipment.
  • the processing efficiency is effectively improved, and the user equipment can access the network more stably.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Description

一种用户设备及连接释放异常的处理方法
技术领域
本发明涉及移动通讯领域, 更具体的涉及一种用户设备及连接释放异常 的处理方法。
背景技术
通信中的连接释放过程指的是释放 RRC (Radio Resource Control, 无 线资源控制协议) 下建立的连接, 包括 UE (User Equipment, 用户设备)和 UTRAN ( Universal Terrestrial Radio Access Network, 地面无线接入网) 之间的所有无线承载和信令无线承载,断开已建立的信令连接的过程。在 RRC 连接释放过程中经常会出现异常情况, 而出现异常情况的原因有:
( 1 )无效的 RRC连接释放消息;
( 2 )无线链路失败;
( 3)无线链路控制层(RLC)非确认模式下定时器 T308溢出;
( 4 ) RLC确认模式下 UE未成功发送 RRC连接释放消息;
(5) UTRAN检测到专有物理信道丟失;
( 6 ) UTRAN未收到 RRC连接释放完成消息。
根据协议, 发生 RRC连接释放异常情况时, UE释放所有的无线资源, 释 放所有已建立的信令连接和无线接入承载, 清除一些变量值, 进入空闲模式。 在进入空闲模式之前, 终端将依照异常情况, 进行进入空闲模式的准备工作, 如小区选择。其中,在 RLC非确认模式下定时器 T308溢出, UE将计数器 V308 加 1, 如果 V308小于或等于变量值 N308 (该值的大小才艮据系统消息获得) , 那么 UE将使用无线承载( RB ) 1重传 RRC连接释放消息, 并再次开启定时器 T308。 如果 V308大于 Ν308, 那么 UE将直接释放所有无线资源, 释放所有信 令连接和无线接入承载, 清除变量值, 进入空闲模式。 同样的, UE在进入空 闲模式时也是需要尝试驻留在一个合适的小区。 根据测试分析发现, 在定时 器 Τ308溢出后, 通过将计数器 V308加 1, 已完成连接释放过程成功率较低, 基本上是进入异常处理机制。
在处理异常 RRC连接释放时, 现有的处理方式为终端连接释放异常后, 一律在进入空闲模式之前进行小区选择, 这种方式不灵活, 同时花费不需有 的时间。 有鉴于此, 行业迫切需要一种连接释放过程出现异常的处理方法, 能够保证 UE更加稳定地接入到网络。
发明内容
本发明要解决的主要技术问题是, 提供一种用户设备及连接释放异常的 处理方法, 其能够灵活处理异常情况, 保证 UE更加稳定地接入到网络。
本发明通过如下技术方案解决所述技术问题:
一种连接释放异常的处理方法,包括以下步骤:
在用户设备连接释放异常时, 所述用户设备中的低层确定异常原因, 并 向用户设备中的无线资源控制协议(RRC )层上 ^艮携带有与异常原因对应的链 路失败原因值的连接释放异常信息; 以及
所述用户设备的 RRC层根据所述连接释放异常信息中携带的链路失败原 因值控制用户设备的低层执行相应操作。
在本发明的一种实施例中, 所述用户设备的低层包括物理层及包含 MAC 和 RLC的控制层。
在本发明的一种实施例中, 所述链路失败原因值包括以下一种或几种: 来自物理层的丟失同步、 来自物理层的解读失败、 来自控制层的数据链路层 失败及来自控制层的等待确认丟失。
在本发明的一种实施例中, 所述用户设备的 RRC层根据所述连接释放异 常信息中携带的链路失败原因值控制用户设备的低层执行相应操作按如下方 式进行:
用户设备释放所有资源, 释放信令连接和无线接入承载, 并进入空闲模 式, 以及,
当所述链路失败原因值为丟失同步, 用户设备立即进行小区选择, 寻找 合适的小区进行同步, 并驻留在该小区上; 当所述链路失败原因值为解读失 败, 用户设备立即进行小区重选, 以便物理层寻找合适的小区, 然后进行同 步、 解读系统消息并驻留在该小区上; 当所述链路失败原因值为数据链路层 失败或等待确认丟失, 用户设备在判断是进行小区选择还是小区重选之前, 先尝试通过空闲模式下的任务来改变当前服务小区。
在本发明的一种实施例中, 还包括: 在 RLC非确认模式下, 用户设备进 行连接释放过程时, 若 RRC层监测到 T308定时器内的数值 V308大于变量值 N308除以 2 , 那么用户设备将直接释放所有无线资源, 释放所有信令连接和 无线接入承载, 清除变量值, 进入空闲模式, 并在进入空闲模式的同时, 用 户设备立即进行小区重选。
在本发明的一种实施例中, 所述用户设备为时分同步码分多址
( TD-SCDMA )终端、 宽带码分多址( WCDMA )终端、 或者是拥有 TD-SCDMA模 式或 WCDMA模式的多模终端。
本发明还提供了一种用户设备, 该用户设备包括配置模块、 低层执行模 块和无线资源控制协议(RRC )层控制模块,
所述配置模块设置为, 配置链路失败原因值;
所述低层执行模块设置为, 在用户设备连接释放异常时, 确定异常原因, 并向所述 RRC层控制模块上报携带有与异常原因对应的链路失败原因值的连 接释放异常信息;
所述 RRC层控制模块设置为, 根据所述连接释放异常信息中携带的链路 失败原因值控制所述低层执行模块执行相应操作。
所述用户设备为时分同步码分多址 (TD-SCDMA ) 终端、 宽带码分多址 ( WCDMA )终端、 或者是拥有 TD-SCDMA模式或 WCDMA模式的多模终端。
所述用户设备的低层执行模块包括: 物理层执行模块及包含媒体接入控 制层(MAC )和无线链路控制层(RLC ) 的控制层执行模块。
所述链路失败原因值包括以下一种或几种: 来自物理层的丟失同步、 来 自物理层的解读失败、 来自控制层的数据链路层失败、 来自控制层的等待确 认丟失。
本发明的有益效果是: 通过配置链路失败原因值, 在用户设备连接释放 异常时, 由用户设备中的低层确定异常原因, 并向用户设备中的 RRC层上报 携带有与异常原因对应的链路失败原因值的连接释放异常信息; RRC层根据 链路失败原因值控制低层执行相应操作, 从而实现针对不同的异常情况釆用 不同处理, 使得处理方式更加灵活, 并可有效提高处理效率, 使用户设备能 更加稳定地接入到网络。 附图概述
图 1为本发明具体实施例中移动终端的协议栈模块示意图;
图 2为本发明具体实施例 UE在无线链路失败情况下的处理流程示意图; 图 3为本发明具体实施例定时器 T308溢出情况下的处理流程示意图; 图 4为本发明具体实施例用户设备主要软件模块示意图。
本发明的较佳实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。
本发明在下述实施例中, 所述的用户设备(UE , User Equi pment )为时 分同步码分多址( TD-SCDMA )移动终端、 宽带码分多址( WCDMA )移动终端, 或者是拥有 TD-SCDMA模式或有 WCDMA模式的多模移动终端。
如图 1所示, 移动终端包含的协议栈模块, 层 1就是物理层(Phys i ca l Layer ) 11 ; 层 2是控制层, 包含媒体接入控制层( MAC ) 12和 RLC1 3; RRC14 作为层 3 , 对低层进行控制, 建立和释放无线资源。 在发生 RRC连接释放异 常后, UE低层确定连接释放异常原因, 并在向 RRC层上报的连接释放异常信 息上增加与连接释放异常原因对应的具体链路失败原因值。 对于 RRC连接释 放过程中的异常情况: ( 1 )无效的 RRC连接释放消息, ( 2 )无线链路失败, ( 3 ) RLC非确认模式下定时器 T308溢出, ( 4 ) RLC确认模式下 UE未成功发 送 RRC连接释放消息, ( 5 ) UTRAN检测到专有物理信道丟失, ( 6 ) UTRAN未 收到 RRC连接释放完成消息。 概括后分为以下几种链路失败原因值: 来自层 1的丟失同步、 来自层 1的解读失败、 来自层 2的数据链路层失败或来自层 2 的等待确认丟失信息, 以及 RLC非确认模式下定时器 T308溢出情况。 为解决 "RLC非确认模式下定时器 T308溢出" 的异常情况, 在进行连接 释放过程时, RLC非确认模式下, RRC若监测到定时器 T308 内的 V308 大于 N308/ 2 , 那么 UE将直接释放所有无线资源, 释放所有信令连接和无线接入承 载, 清除变量值, 进入空闲模式。 在进入空闲模式同时, UE需立即进行小区 重选, 从而得到一个更好的小区, 降低链路建立的失败率。
当为另几种链路失败原因值时, RRC层根据接收到的不同原因值来确定 UE的不同动作:
当低层上报的连接释放异常原因上具体原因值指示为层 1丟失同步, UE 将认为已经失去能够成功解读该小区的系统信息的能力, UE将释放所有资源, 释放信令连接和无线接入承载, 并进入空闲模式。 由于此时 UE的物理层失去 同步, 应在进入空闲模式同时立即进行小区选择, 以便物理层寻找合适的小 区, 然后进行同步, 驻留在该小区上。
当低层上报的连接释放异常原因上具体原因值指示为层 1的解读失败, UE将认为该服务小区的功率偏低或者不符合要求, 那么 UE将释放所有资源, 释放信令连接和无线接入承载, 并进入空闲模式。 空闲模式下的 UE将根据连 接释放异常指示值来决定是进行小区选择还是进行小区重选。由于此时 UE的 物理层只是认为当期服务小区的功率较低, 但是从该服务小区得到的邻近小 区信息应是正确的, 那么 UE应在进入空闲模式同时立即进行小区重选, 以便 物理层寻找合适的小区, 然后进行同步, 解读系统消息, 驻留在该小区上。
当低层上报的连接释放异常原因上具体原因值指示为层 1的数据链路层 失败或者等待确认丟失,那么 UE将认为它与该服务小区的对等层已经不能够 再进行消息的交互,那么 UE将释放所有资源,释放信令连接和无线接入承载, 并进入空闲模式。空闲模式下的 UE将根据连接释放异常指示值来决定是进行 小区选择还是进行小区重选。但是此时 UE的物理层还是能够完成空闲模式下 的任务, 此时 UE将不会立即进行小区选择或者小区重选, 而是通过空闲模式 下的任务, 如测量来改变当前服务小区。
方案中, 所述进入空闲模式和进行小区选择 /重选是一个并行的概念, 执 行的主体不一样, RRC将执行进入空闲模式, 而 MAC与物理层将执行小区选 择 /重选的动作。 如图 2所示,在 UE连接释放过程中出现了异常情况的处理方式的具体实 施例, 步骤 201、 RRC接收异常消息; 步骤 202、 RRC根据接收到的异常消息 判断异常消息原因值, 来触发以下动作:
一、 未同步(层 1的丟失同步) : RRC将请求 RLC释放无线资源承载, 释放专用信道, MAC进入同步状态, 然后 RRC向上层指示已建立的信令连接 和无线接入承载被释放 (释放低层资源) ; 清除变量值建立信号连接 ( ESTABLISHED-SIGNALLING. CONNECTIONS ) 、 记录建立的 RB 的状态 ( ESTABLISHED- RABS ) ; RRC进入空闲模式; 此时 RRC请求物理层进行小区 选择过程, 来寻找一个合适小区进行驻留。
二、 解读消息失败(层 1 ) : RRC将释放所有的信令连接和无线资源, 然 后 RRC 向上层指示资源已经被释放 (释放低层资源) ; 清除变量 ESTABLISHED-RABS 、 ESTABLISHED-SIGNALLING-CONNECTIONS; RRC进入空闲 模式; 此时失败是由于小区的功率较低, UE在解读消息出现了异常, 造成的 无线链路失败(即连接释放异常 ) , 此时 RRC将请求低层进行小区重选过程, 这些小区信息来自当前服务小区的系统消息。
三、 层 2的数据链路层失败或者等待确认丟失: RRC将直接释放 RLC (等 效于 "释放低层资源"或 "释放所有资源" , 因为唯一例外 "出现 T380溢出" 的情况被同步解决) , 然后 RRC向上层指示向上层指示已建立的信令连接和 无线接入承载被释放; 清除变量 ESTABLISHED_SIGNALLING_CO匪 ECTI0NS、 ESTABLISHED-RABS , RRC进入空闲模式; 此时失败是由于 RRC无法得到 RLC 释放的确认信息导致的异常情况,此时 RRC将不触发立即进行新小区的选择, 而是驻留在当前的服务小区上, 下发空闲模式的任务。
这里描述的失败的原因值将在发送给 RRC的信息里体现,所述 CPHY ERROR IND字段的消息基本结构如下:
CphyError Ind
{
ErrorType/ / error cause of LI 本发明中, 该信息中的 IE<ErrorType>†标明了具体失败的原因值: 0、 硬件失败 ( hardware fa i lure ) ; 1、 层 1解读消息失败 ( no decode ) ; 2: 无线链路失败(no radiol ink ) ; 3 , 未同步(no sync ) 。 (从向上指示的 原因值中可得知是什么原因造成的失败)通过它们, RRC将执行进入空闲模 式下的不同动作。
所述层 2失败的原因值在 CRLC ERROR IND中指示, 该消息的基本结构如 下:
Cr lcError lnd
{Ent i tynum/ / number of ent i ty
ErrorType/ / error cause of RLC
本发明中, 该信息中的 IE<ErrorType>†标明了具体失败的原因值, 0: 数据链路层失败(fa i l 12 ) ; 1: 等待确认丟失(no response ) ; 2: 未知 数据 ( wrong da ta ) 。 通过它们, RRC将执行进入空闲模式下的不同动作。
图 3所示为优选实施例中, UE在定时器 T308溢出后的处理流程, UE在
CELL-DCH状态下发送 RRC连接释放完成( RRC CONNECTION RELEASE COMPLETE ) 消息后执行步骤 301 , 步骤 301、 开启定时器 T308; 步骤 302、 当 T308超时 时, 判断消息重发次数 V308就是自动加 1 ; 步骤 303、 判断 V308是否大于 N308/2 ( N308的设置在 RRC CONNECTION RELEASE 消息中带给 UE ) ; 如果不 是, 则重新发送 RRC CONNECTION RELEASE COMPLETE消息 (连接释放完成消 息 ) ,转向步骤 301 ; 否则执行步骤 304; 步骤 304、释放无线资源; 步骤 305、 将进入空闲模式, 此时可断定当前服务小区已经不符合驻留要求, UE需立即 进行小区重选, 驻留到其他的小区上。 这种方式可以让终端尽早地释放链接, 进入空闲, 减少了不必要的异常连接释放的时间。
请参考图 4所示, 本发明用户设备具体实施方式中的主要软件模块示意 图。 所述用户设备为通信设备, 包括配置模块 41、 低层执行模块 42及 RRC 层控制模块 43。 其中配置模块设置为, 配置链路失败原因值; 低层执行模块 设置为, 在用户设备连接释放异常时, 确定异常原因, 并向所述 RRC层控制 模块上报携带有与异常原因对应的链路失败原因值的连接释放异常信息;
RRC 层控制模块设置为, 根据所述连接释放异常信息中携带的链路失败原因 值控制所述低层执行模块执行相应动作。 所述用户设备可以是 TD-SCDMA终 端、 WCDMA终端、 或者是拥有 TD-SCDMA模式或 WCDMA模式的多模终端。 优选 地,用户设备的低层执行模块 42包括物理层执行模块 421及控制层执行模块 422 , 控制层执行模块包含 MAC和 RLC。 这种用户设备的连接释放异常的处理 方法同前述。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
以上内容仅为本发明的较佳实施例而已, 不能认定本发明的具体实施只 局限于这些说明。 对于本发明所属技术领域的普通技术人员来说, 在不脱离 本发明构思的前提下, 还可以做出若干简单推演或替换, 都应当视为属于本 发明的保护范围。
工业实用性
本发明提供的用户设备及连接释放异常的处理方法, 通过配置链路失败 原因值, 在用户设备连接释放异常时, 由用户设备中的低层确定异常原因, 并向用户设备中的 RRC层上报携带有与异常原因对应的链路失败原因值的连 接释放异常信息; RRC 层根据链路失败原因值控制低层执行相应的操作, 从 而实现针对不同的异常情况釆用不同处理, 使得处理方式更加灵活, 有效地 提高了处理效率, 使用户设备能更加稳定地接入到网络。

Claims

权 利 要 求 书
1、 一种连接释放异常的处理方法,该方法包括:
在用户设备连接释放异常时, 所述用户设备中的低层确定异常原因, 并 向用户设备中的无线资源控制协议(RRC )层上报携带有与异常原因对应的 链路失败原因值的连接释放异常信息; 以及
所述用户设备的 RRC层根据所述连接释放异常信息中携带的链路失败 原因值控制用户设备的低层执行相应操作。
2、 如权利要求 1所述的连接释放异常的处理方法, 其中, 所述用户设备 的低层包括物理层及包含媒体接入控制层 ( MAC )和无线链路控制层 ( RLC ) 的控制层。
3、 如权利要求 1所述的连接释放异常的处理方法, 其中, 所述链路失败 原因值包括以下一种或几种: 来自物理层的丟失同步、 来自物理层的解读失 败、 来自控制层的数据链路层失败、 来自控制层的等待确认丟失。
4、 如权利要求 3所述的连接释放异常的处理方法, 其中, 所述用户设备 的 RRC层根据所述连接释放异常信息中携带的链路失败原因值控制用户设 备的低层执行相应操作按如下方式进行:
用户设备释放所有资源, 释放信令连接和无线接入承载, 并进入空闲模 式, 以及,
当所述链路失败原因值为丟失同步, 用户设备立即进行小区选择, 寻找 合适的小区进行同步, 并驻留在该小区上; 当所述链路失败原因值为解读失 败, 用户设备立即进行小区重选, 以便物理层寻找合适的小区, 然后进行同 步、 解读系统消息并驻留在该小区上; 当所述链路失败原因值为数据链路层 失败或等待确认丟失, 用户设备在判断是进行小区选择还是小区重选之前, 先尝试通过空闲模式下的任务来改变当前服务小区。
5、 如权利要求 2所述的连接释放异常的处理方法, 所述方法还包括: 在
RLC非确认模式下, 用户设备进行连接释放过程时, 若 RRC层监测到 T308 定时器内的数值 V308大于变量值 N308除以 2 , 那么用户设备将直接释放所 有无线资源, 释放所有信令连接和无线接入承载, 清除变量值, 进入空闲模 式, 并在进入空闲模式的同时, 用户设备立即进行小区重选。
6、 如权利要求 2所述的连接释放异常的处理方法, 其中: 所述用户设备 为时分同步码分多址( TD-SCDMA )终端、 宽带码分多址( WCDMA )终端、 或者是拥有 TD-SCDMA模式或 WCDMA模式的多模终端。
7、 一种用户设备, 该用户设备包括配置模块、 低层执行模块和无线资源 控制协议(RRC )层控制模块,
所述配置模块设置为, 配置链路失败原因值;
所述低层执行模块设置为, 在用户设备连接释放异常时, 确定异常原因, 并向所述 RRC层控制模块上报携带有与异常原因对应的链路失败原因值的 连接释放异常信息;
所述 RRC层控制模块设置为,根据所述连接释放异常信息中携带的链路 失败原因值控制所述低层执行模块执行相应操作。
8、 如权利要求 7所述的用户设备, 其中: 所述用户设备为时分同步码分 多址 (TD-SCDMA ) 终端、 宽带码分多址 (WCDMA ) 终端、 或者是拥有 TD-SCDMA模式或 WCDMA模式的多模终端。
9、 如权利要求 7所述的用户设备, 其中, 所述用户设备的低层执行模块 包括: 物理层执行模块及包含媒体接入控制层 (MAC ) 和无线链路控制层
( RLC ) 的控制层执行模块。
10、 如权利要求 9所述的用户设备, 其中, 所述链路失败原因值包括以 下一种或几种: 来自物理层的丟失同步、 来自物理层的解读失败、 来自控制 层的数据链路层失败、 来自控制层的等待确认丟失。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045456A1 (en) * 2000-11-28 2002-06-06 Telefonaktiebolaget Lm Ericsson (Publ) Release of user equipment using a page procedure in a cellular communication system
US20070123266A1 (en) * 2005-11-28 2007-05-31 Rohini Polisetty Method for signalling and time reduction during connection release
CN101128034A (zh) * 2006-08-18 2008-02-20 中兴通讯股份有限公司 避免用户注册区寻呼信道状态下用户设备寻呼失败的方法
CN101651899A (zh) * 2008-08-12 2010-02-17 中兴通讯股份有限公司 Lte rrc连接重建立请求方法、原因值设置方法及终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045456A1 (en) * 2000-11-28 2002-06-06 Telefonaktiebolaget Lm Ericsson (Publ) Release of user equipment using a page procedure in a cellular communication system
US20070123266A1 (en) * 2005-11-28 2007-05-31 Rohini Polisetty Method for signalling and time reduction during connection release
CN101128034A (zh) * 2006-08-18 2008-02-20 中兴通讯股份有限公司 避免用户注册区寻呼信道状态下用户设备寻呼失败的方法
CN101651899A (zh) * 2008-08-12 2010-02-17 中兴通讯股份有限公司 Lte rrc连接重建立请求方法、原因值设置方法及终端

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