WO2012025018A1 - Imsipaging消息的处理方法和设备 - Google Patents

Imsipaging消息的处理方法和设备 Download PDF

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Publication number
WO2012025018A1
WO2012025018A1 PCT/CN2011/078386 CN2011078386W WO2012025018A1 WO 2012025018 A1 WO2012025018 A1 WO 2012025018A1 CN 2011078386 W CN2011078386 W CN 2011078386W WO 2012025018 A1 WO2012025018 A1 WO 2012025018A1
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Prior art keywords
terminal device
mme
timing
period
timer
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PCT/CN2011/078386
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English (en)
French (fr)
Inventor
田野
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电信科学技术研究院
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Publication of WO2012025018A1 publication Critical patent/WO2012025018A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and a device for processing an IMSI Paging message. Background technique
  • CN In EPS (Evolved Packet System), CN (Core Network) requests to establish a NAS (Non-Access Stratum) with a UE (User Equipment) in an idle (IDLE) state through a paging procedure. Non-access stratum) signaling connection.
  • NAS Non-Access Stratum
  • UE User Equipment
  • IDLE idle
  • Non-access stratum signaling connection.
  • the mobility management entity MME Mobility Management Entity
  • the mobility management entity MME Mobility Management Entity
  • the relevant eNodeB evolved Node B, the evolved Node B, ie, the base station
  • SI Application Protocol SI Application Protocol
  • each Paging message carries information of the paged UE.
  • the eNodeB interprets the content, and obtains a TAI (Tracking Area Identity) list of the paged UE, and performs air interface paging in the cells of the listed tracking area.
  • TAI Track Area Identity
  • the MME uses the S-TMSI (System Architecture Evolution-Temporary Mobile Subscriber Identity) to identify the UE and initiate paging for the UE in the idle state. After receiving the Paging message indicating the S-TMSI, the UE responds with a Service Request message.
  • S-TMSI System Architecture Evolution-Temporary Mobile Subscriber Identity
  • the network side node such as MME
  • the MME may fail.
  • the MME After restarting the reset, the MME will lose all context information of the served UE.
  • the MME obtains related information of the served UE from other nodes and uses the IMSI (International Mobile Subscriber Identification Number) identifier to initiate paging for the UE in the idle state.
  • the UE After receiving the Paging message indicating the IMSI, the UE responds by using an Attach Request message.
  • FIG. 2 A schematic diagram of the process flow is shown in FIG. 2.
  • the MME of the core network may fail due to a fault or power failure, etc., so that the MME will lose the context information of all UEs that were previously maintained and managed.
  • GTP General Packet Radio Service Tunnel Protocol
  • S-GW Serving Gateway
  • GTP Echo GTP Echo
  • the bearer information of all UEs related to the failed MME that are locally maintained is deleted, thereby adversely affecting the EPC (Evolved Packet Core) service of the user.
  • the prior art proposes a method for restoring the context information of the UE after the MME is reset.
  • the flowchart is as shown in FIG. 3, and specifically includes the following steps:
  • Step S301 During the session establishment and modification process, the MME sends the latest TA list (tracking area list) of the UE to the S-GW.
  • Step S302 When the MME fails, the S-GW temporarily saves the IMSI and TA list information of all UEs related to the failed MME, and releases other context information and resources of the UE.
  • Step S303 The S-GW notifies the P-GW to clear the maintained UE context information.
  • Step S305 When receiving the Paging Notification message including the [IMSI, TA list] information, the MME initiates a Paging process indicating the IMSI in the TA included in the TA list.
  • Step S306 When receiving the Paging message indicating the IMSI, the UE initiates an attach procedure according to the 3GPP TS 24.301 protocol specification.
  • the S-GW can start a timer with a short duration, which will be retained after the timer expires.
  • the [IMSI, TA list] information of the UE is deleted.
  • the S-GW is used to save the IMSI identifier and the TA list of the UE, and after the MME is reset, the MME is triggered to initiate a mechanism for indicating the Paging process of the IMSI, and the original user's context information can be effectively established at the MME recovered after the failure, thereby ensuring a higher Quality user experience.
  • the above method has the risk of repeatedly initiating the Paging process of the IMSI and causing the UE to reattach.
  • the specific process is shown in Figure 4.
  • the UE in the IDLE state in the network may initiate a TAU (Tracking Area Update) or Service Request (Service Request) procedure before the MME is reset.
  • TAU Track Area Update
  • Service Request Service Request
  • the MME since the MME is in a failed state, the UE's request will not receive a network response. For the user, in the case that network services are not available, one possible way is to restart the UE. In this way, the UE will initiate an Attach procedure and attach to a working new MME to use the communication services provided by the network. However, after the old MME recovers from the failed state, according to the foregoing method, the MME will initiate a Paging process indicating the IMSI to the UE according to the information provided by the S-GW through the Paging Notification message. This will cause the UE to perform the local detach process and trigger the UE to initiate the Attach process again, which will adversely affect the user experience. Summary of the invention
  • the embodiment of the present invention provides a method and a device for processing an IMSI Paging message, which are used to solve the UE's unnecessary response IMSI Paging and repeatedly initiate a network attach request (so-called UE-less response IMSI Paging refers to the UE responding to the IMSI Paging that does not have a response) The problem.
  • an embodiment of the present invention provides an IMSI Paging.
  • the processing method of the message including:
  • the terminal device After the terminal device is attached to the mobility management entity MME in the network, the terminal device determines whether the currently attached MME is the same as the previously attached MME;
  • the terminal device If the result of the determining is different, the terminal device starts a timing operation, and before the end of the timing operation, the terminal device refuses to respond to the received IMSI Paging message, wherein the duration of the timing operation lasts For the timing period.
  • the embodiment of the present invention further provides a terminal device, including: a determining module, configured to determine, when the terminal device is attached to an MME in the network, whether the currently attached MME is the same as the previously attached MME. ;
  • a timing module configured to start a timer operation when the determination result of the determining module is different, wherein a duration of the timing operation is a timing period;
  • a communication module configured to refuse to respond to the received IMSI Paging message before the timing operation initiated by the timing module ends.
  • the embodiment of the invention has the following advantages:
  • the terminal device After the terminal device is attached to the MME in the network, if the attached MME changes, the terminal device starts a timing operation, and refuses to respond to the received IMSI before the timing operation ends.
  • the Paging message can effectively solve the problem that the terminal device responds to the IMSI Paging message without repeated response to the IMSI Paging message and resets the network attach request process, and the technical solution has the characteristics of small modification and easy implementation of the existing operation flow.
  • FIG. 1 is a schematic flowchart of a paging process for indicating an S-TMSI in the prior art
  • FIG. 2 is a schematic flowchart of a paging process for indicating an IMSI in the prior art
  • FIG. 3 is a schematic diagram of a MME reset in the prior art.
  • FIG. 4 is a schematic diagram of a process in which a UE initiates attachment again after an MME fails in the prior art
  • FIG. 5 is a method for processing an IMSI Paging message according to an embodiment of the present invention. Schematic diagram of the process;
  • FIG. 6 is a schematic flowchart of a timer processing mechanism on a UE in a specific application scenario according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a processing flow after a UE receives an IMSI Paging message in a specific application scenario according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. detailed description
  • the existing technical solution proposes that after the MME resets, the terminal IMSI and TA list information are generated according to the S-GW.
  • the paging process causes the terminal device to reattach to the network, thereby re-establishing the context information of the terminal device lost due to the failure.
  • the embodiment of the present invention proposes a method for effectively solving the problem that the terminal device has no response to the IMSI Paging message and repeatedly initiates the network attach request problem based on the timing control mechanism.
  • FIG. 5 it is a schematic flowchart of a method for processing an IMSI Paging message according to an embodiment of the present invention, where the method specifically includes the following steps:
  • Step S501 The terminal device is attached to the MME in the network.
  • Step S502 The terminal device determines whether the currently attached MME is the same as the previously attached MME.
  • step S503 is performed
  • step S504 is performed.
  • the process of determining in this step is as follows:
  • the terminal device receives the GUTK Globally Unique allocated by the currently attached MME. Temporary UE Identity, the only temporary temporary terminal identifier in the world).
  • the terminal device determines whether the currently attached MME is the same as the previously attached MME, according to the information of the GUTI allocated by the currently attached MME and the GUTI allocated by the previously attached MME.
  • the GUTI allocated by the MME of the EPS system core network to the UE has the following structure:
  • ⁇ GUTI> ⁇ GUMMEIxM-TMSI> ,
  • ⁇ MME Identifier ⁇ MME Group IDxMME Code>.
  • the MME Identifier information of the GUTI allocated by the different MMEs is different. Therefore, by comparing the MME Identifier information in the GUTI, it is possible to determine whether the currently attached MME has changed.
  • Step S503 The terminal device starts a timing operation, and the terminal device refuses to respond to the received IMSI Paging message before the timing operation ends.
  • the duration of the timing operation is the timing period.
  • step S504 is performed.
  • the specific processing of this step includes the following two cases according to the difference in the configuration scheme of the timing period:
  • Case 1 The terminal device acquires a preset timing period on its own data card, and performs timing operation according to the time corresponding to the timing period.
  • the timing period is pre-configured, and the operator can directly store the appropriate timing period information in the data card, for example, (U) SIM (Universal Subscriber Identity Module) card.
  • U SIM (Universal Subscriber Identity Module) card.
  • Case 2 The terminal device acquires a timing period carried in the received configuration message, and performs a timing operation according to the time corresponding to the timing period.
  • the timing period can be dynamically configured.
  • the network side can configure the terminal device with a timing period suitable for the current network system state according to the current running condition of the network system.
  • the specific configuration mode can be to the terminal device through the dynamic configuration mechanism. Sending the configuration information carrying the chronograph period, and the terminal device acquires the phase of the chronograph period through the configuration information. The information is turned off, and when the timing operation is required, the timing operation is performed according to the timing period.
  • the foregoing timing operation may be completed by starting a timer, and the time length set by the timer is equal to the timing period.
  • timing period is determined by the following method:
  • Manner 1 The size of the set timer period is equal to the length of time that the S-GW sets the timer to prevent the saved terminal device information from being obsolete after the MME fails.
  • the time range is the maximum time interval in which the MME receives terminal related information from the S-GW after reset. After the time interval is exceeded, the MME after the reset does not receive the relevant information of the terminal from the S-GW, and the terminal will not receive the IMSI Paging message sent by the MME after the reset. Naturally, the terminal device will not appear. Unnecessarily responding to IMSI Paging messages.
  • Method 2 Determine the size of the timing period based on system statistics.
  • Such a method needs to comprehensively consider various statistical information in the network system, and combine the corresponding operational maintenance and management experience to determine the corresponding timing period. In this determination process, the subjective factors of the determiner are also added, and the determiner The accuracy of the experience and the judgment of the current situation will have an impact on the size of the final timing period.
  • the specific application of the above-mentioned method for determining the timing period can be set and adjusted according to actual needs, and such changes do not affect the protection scope of the present invention.
  • Step S504 When the terminal device receives the IMSI Paging message, the terminal device responds to the received IMSI Paging message.
  • the embodiment of the invention has the following advantages: By applying the technical solution of the embodiment of the present invention, the terminal device is attached to the network.
  • the terminal device After the MME, if the attached MME changes, the terminal device starts the timing operation, and refuses to respond to the received IMSI Paging message before the timing operation ends, thereby effectively solving the terminal device without the MME resetting.
  • the problem of the network attach request process is repeatedly initiated, and the technical solution has the characteristics of small modification and easy implementation of the existing operation flow.
  • the new MME After the MME that the UE previously attached fails, if the UE initiates a new Attach procedure to attach to a new MME, the new MME will send the new GUTI allocated for the UE to the UE through the Attach Accept message. .
  • the UE After receiving the Attach Accept message, by comparing the new GUTI with the MME Identifier in the old GUTI, it can be determined that the current self has been attached to a new MME. In order to avoid responding to the IMSI Paging message sent by the old MME after the reset, the UE shall not respond to the IMSI Paging message sent by the network within a certain period of time after determining that it has attached to the new MME.
  • FIG. 6 is a schematic flowchart of a timer processing mechanism on a UE in a specific application scenario according to an embodiment of the present disclosure, which specifically includes the following steps:
  • Step S601 The UE re-initiates the attach process after the previously attached MME fails.
  • Step S602 The UE receives an Attach Accept message.
  • the Attach Accept message carries the GUTI allocated to the UE, and the GUTI carries the MME Identifier information of the MME to which the GUTI is allocated.
  • Step S603 The UE determines whether the attached MME has changed.
  • the UE Before the step S601, the UE stores the GUTI allocated by the previous MME. Therefore, in this step, the UE can compare the old and new GUTIs, determine whether the MME Identifier information has changed, and determine that the attached procedure is attached before and after the restart of the Attach process. Has the MME changed?
  • step S604 is performed;
  • step S605 is directly performed.
  • step S605 is performed.
  • Step S604 The UE starts a timer.
  • the UE Before the timer expires, if the UE receives the IMSI Paging message sent by the network, the UE does not respond to it.
  • step S605 is performed.
  • Step S605 The UE performs normal subsequent processing.
  • step S603 the result of the determination in step S603 is that the MME has not changed, and the other is that the timer set in step S604 is timed out, regardless of the above. In which case, in the processing of this step, if the UE receives the IMSI Paging message sent by the network, the UE will respond to it.
  • the duration of the timer started by the UE may be configured in the following two manners, as follows:
  • the operator pre-stores the duration parameter of the appropriate timer in the (U) SIM card, and the UE reads the relevant parameter information from the (U) SIM card when the timer needs to be started.
  • the above pre-configuration information can be stored not only in the (U) SIM card, but also in the STK (SIM TOOL KIT, User Identification Application Development Tool) card, UTK (User identity model card Tool Kit, user).
  • Identification module card development kit) card and other types of data cards, even in the storage space of the UE itself, any storage method that enables the UE to obtain the duration parameter when the timer needs to be started, belongs to the present invention. The scope of protection.
  • the operator can use the dynamic configuration mechanism to set the timer according to the network system operation.
  • the time parameter is configured in the terminal, and the specific dynamic configuration mechanism may be, for example, an OMA DM (Open Management Architecture Device Management) mechanism.
  • OMA DM Open Management Architecture Device Management
  • the specific size of the duration information configured in the above manner can also be determined in the following two ways:
  • the operator sets the duration parameter of the timer in the UE to the same value as the timer used by the foregoing S-GW.
  • the operator determines the appropriate timer duration parameter value for the terminal based on system operation, maintenance, management experience or network system statistics.
  • a schematic diagram of a processing procedure after a UE receives an IMSI Paging message in a specific application scenario includes the following steps:
  • Step S701 The UE receives the IMSI Paging message.
  • Step S702 The UE determines whether a timer is currently started.
  • the judgment of this step is to determine whether the current timer is in the startup state, or whether it times out.
  • step S703 is performed
  • step S704 is performed.
  • Step S703 The UE refuses to respond to the IMSI Paging message.
  • Step S704 The UE responds to the IMSI Paging message.
  • the embodiment of the invention has the following advantages:
  • the terminal device is attached to the network.
  • the terminal device After the MME, if the attached MME changes, the terminal device starts the timing operation, and refuses to respond to the received IMSI Paging message before the timing operation ends, so that the terminal device can effectively resolve the unnecessary response when the MME is reset.
  • the IMSI Paging message repeatedly initiates the problem of the network attach request process, and the technical solution has the characteristics of small modification and easy implementation of the existing operation flow.
  • an embodiment of the present invention further provides a terminal device, and a schematic structural diagram thereof is shown in FIG.
  • the determining module 81 is configured to determine, after the terminal device is attached to the MME in the network, whether the currently attached MME is the same as the previously attached MME;
  • the timing module 82 is configured to start a timing operation when the determination result of the determining module 81 is different, wherein the duration of the timing operation is a timing period;
  • the communication module 83 is configured to refuse to respond to the received IMSI Paging message before the timing operation initiated by the timing module 82 ends.
  • the communication module 83 is further configured to respond to the received IMSI Paging message when receiving the IMSI Paging message.
  • the communication module 83 is further configured to receive the GUTL allocated by the currently attached MME.
  • the determining module 81 is specifically configured to determine whether the currently attached MME is related to the GUTI allocated by the currently attached MME and the GUTI allocated by the previously attached MME according to the communication module 83.
  • the previously attached MME is the same.
  • the timing module 82 is specifically configured to perform the following two processes:
  • the communication module 83 is further configured to receive a configuration message carrying a timeout period, where the configuration message carrying the duration information is a message sent by the network side to the terminal device according to the current system state through a dynamic configuration mechanism;
  • the timing module 82 is further configured to acquire a timing period in the configuration message received by the communication module 83.
  • the size of the timing period is specifically equal to the length of time that the S-GW detects the timer to prevent the saved terminal device from being outdated after the MME fails, or determines according to the system statistics.
  • the timing module 82 performs timing processing to time the startup timer, where the length of time set by the timer is equal to the timing period.
  • the embodiment of the invention has the following advantages:
  • the terminal device After the terminal device is attached to the MME in the network, if the attached MME changes, the terminal device starts a timing operation, and refuses to respond to the received IMSI before the timing operation ends.
  • the Paging message can be used to effectively solve the problem that the terminal device fails to respond to the IMSI Paging message and repeatedly initiates the network attach request process in the case that the MME is reset, and the technical solution has the characteristics of small modification and easy implementation of the existing operation flow. .
  • the embodiments of the present invention may be implemented by hardware, or may be implemented by means of software plus a necessary general hardware platform.
  • the technical solution of the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.).
  • a non-volatile storage medium which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • Includes a number of instructions to make a computer device either a personal computer, a server, or a network
  • the device or the like performs the method described in each implementation scenario of the embodiment of the present invention.
  • modules in the apparatus in the implementation scenario may be distributed in the apparatus for implementing the scenario according to the implementation scenario description, or may be correspondingly changed in one or more devices different from the implementation scenario.
  • the modules of the above implementation scenarios may be combined into one module, or may be further split into multiple sub-modules.

Abstract

本发明实施例公开了一种IMSIPaging消息的处理方法和设备,通过应用本发明实施例的技术方案,在终端设备附着到网络中的MME之后,如果所附着的MME发生了变化,则终端设备启动计时操作,并在计时操作结束前,拒绝响应接收到的IMSIPaging消息,从而,能够在MME复位的情况下,有效解决终端设备无谓响应IMSIPaging消息,而重复发起网络附着请求过程的问题,并且该技术方案具有对现有操作流程修改小,易于实现的特点。

Description

IMSI Paging消息的处理方法和设备 本申请要求以下中国专利申请的优先权:
于 2010年 8月 25日提交中国专利局,申请号为 201010262299X, 发明名称为 "IMSI Paging消息的处理方法和设备" 的中国专利申请。 技术领域
本发明涉及通信技术领域, 特别涉及一种 IMSI Paging消息的处 理方法和设备。 背景技术
在 EPS ( Evolved Packet System, 演进分组系统) 中, CN ( Core Network , 核心网) 通过寻呼过程请求与处于空闲 ( IDLE ) 状态的 UE ( User Equipment, 用户设备)建立 NAS ( Non- Access Stratum, 非接入层)信令连接。
寻呼时, 核心网的移动性管理实体 MME ( Mobility Management Entity )使用 SI接口协议 ( SI Application Protocol, Sl-AP ) 向相关 eNodeB ( evolved Node B , 演进的 B节点, 即基站 )发送 Paging (寻 呼 ) 消息, 每条 Paging消息中携带被寻呼 UE的信息。 eNodeB在接 收到 Paging消息后, 解读其中的内容, 从而得到被寻呼 UE的 TAI ( Tracking Area Identity, 跟踪区域标识 )列表, 并在所列出的跟踪区 域下属的小区进行空口寻呼。
正常情况下, MME 使用 S-TMSI ( System Architecture Evolution-Temporary Mobile Subscriber Identity , 系统架构演进临时识 别码)标识 UE 并对处于空闲态的 UE发起寻呼。 UE在收到指示 S-TMSI的 Paging消息后, 使用 Service Request (服务请求 ) 消息进 行响应。 该处理流程的示意图如图 1所示。
然而, 在实际运行过程中, 网络侧节点 (如 MME )可能发生故 障, 重启复位之后, MME将丟失所服务 UE的全部上下文信息。 在 这种异常情况下, MME从其他节点处获得所服务 UE的相关信息并 使用 IMSI ( International Mobile Subscriber Identification Number, 国 际移动用户识别码)标识对处于空闲态的 UE发起寻呼。 UE在收到 指示 IMSI的 Paging消息后, 使用 Attach Request (附着请求 ) 消息 进行响应。 该处理流程的示意图如图 2所示。
由于故障或掉电等原因, 核心网的 MME可能发生失效, 这样, MME将丟失先前维护、管理的所有 UE的上下文信息。根据现有 GTP ( General Packet Radio Service Tunnel Protocol, 通用分组无线月良务技 术隧道协议)操作流程, S-GW ( Serving Gateway, 服务网关)通过 GTP Echo ( GTP回响 )消息检测到 MME失效之后, 将删除本地维护 的与失效 MME相关的所有 UE 的承载信息, 从而对用户的 EPC ( Evolved Packet Core, 演进分组核心网 )服务造成不利影响。
为了确保用户的 EPC业务体验不受 MME失效的影响, 现有技 术提出了一种在 MME复位后恢复 UE的上下文信息的方法, 其流程 图如图 3所示, 具体包括以下步骤:
步骤 S301、在会话建立及修改过程中, MME将 UE最新的 TA list ( Tracking Area list, 跟踪区域列表 )发送给 S-GW。
步骤 S302、 当 MME失效时, S-GW临时性的保存与失效 MME 相关的所有 UE的 IMSI及 TA list信息, 释放 UE的其他上下文信息 及资源。
步骤 S303、 S-GW通知 P-GW清除所维护的 UE上下文信息。 步骤 S304、 当 MME复位时, S-GW通过 Paging Notification (寻 呼通知 )消息将所保存的与该 MME相关的所有 UE的 [IMSI, TA list] 信息发送给 MME。
步骤 S305、当接收到包含 [IMSI , TA list]信息的 Paging Notification 消息时, MME在 TA list包含的 TA中发起指示 IMSI的 Paging过程。
步骤 S306、当接收到指示 IMSI的 Paging消息时, UE按照 3GPP TS 24.301协议规范发起 Attach过程。
为了保持所记录消息的新鲜性及有效性,在检测到 MME失效时 S-GW可以启动一个时长较短的定时器, 在定时器超时后将所保留的
UE的 [IMSI , TA list]信息删除。
采用 S-GW保存 UE的 IMSI标识及 TA list并在 MME复位后触 发 MME发起指示 IMSI的 Paging过程的机制, 能够在失效后恢复的 MME处有效的建立起原始用户的上下文信息, 进而确保较高质量的 用户体验。
在实现本发明实施例的过程中, 申请人发现现有技术至少存在以 下问题:
上述方法存在重复发起指示 IMSI的 Paging过程而造成 UE再次 附着的风险, 具体发生过程如图 4所示。
在 MME失效之后, 网络中处于 IDLE态的 UE可能在 MME复 位之前向网络发起 TAU ( Tracking Area Update, 跟踪区域更新)或 Service Request (服务请求)过程。
此时, 由于 MME正处于失效状态, UE的请求将得不到网络响 应。 对于用户而言, 在无法获得网络服务情况下, 4艮可能的一种做法 是重新启动 UE。 这样, UE将发起 Attach (附着)过程并附着至一个 正常工作的新的 MME 来使用网络提供的通信服务。 然而, 当旧的 MME从失效状态恢复之后, 按照上述方法, 该 MME将根据 S-GW 通过 Paging Notification消息提供的信息, 对 UE发起指示 IMSI的 Paging过程。 这将促使 UE进行本地去附着过程, 并再次触发 UE发 起 Attach过程, 给用户体验造成不利影响。 发明内容
本发明实施例提供一种 IMSI Paging消息的处理方法和设备, 用 于解决 UE无谓响应 IMSI Paging而重复发起网络附着请求(所谓 UE 无谓响应 IMSI Paging是指 UE对于没有必要响应的 IMSI Paging进行 响应) 的问题。
为达到上述目的, 本发明实施例一方面提供了一种 IMSI Paging 消息的处理方法, 包括:
当终端设备附着到网络中的移动性管理实体 MME后, 所述终端 设备判断当前所附着的 MME是否与先前所附着的 MME相同;
如果所述判断的结果为不相同, 所述终端设备启动计时操作, 在 所述计时操作结束前, 所述终端设备拒绝响应接收到的 IMSI Paging 消息, 其中, 所述计时操作所持续的时间长度为计时周期。
另一方面, 本发明实施例还提供了一种终端设备, 包括: 判断模块, 用于当所述终端设备附着到网络中的 MME后, 判断 当前所附着的 MME是否与先前所附着的 MME相同;
计时模块, 用于在所述判断模块的判断结果为不相同时, 启动计 时操作, 其中, 所述计时操作所持续的时间长度为计时周期;
通信模块, 用于在所述计时模块所启动的计时操作结束前, 拒绝 响应接收到的 IMSI Paging消息。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案,在终端设备附着到网络中的 MME之后, 如果所附着的 MME发生了变化, 则终端设备启动计时 操作, 并在计时操作结束前, 拒绝响应接收到的 IMSI Paging消息, 从而能够在 MME复位的情况下, 有效解决终端设备无谓响应 IMSI Paging消息, 而重复发起网络附着请求过程的问题, 并且该技术方案 具有对现有操作流程修改小, 易于实现的特点。 附图说明
图 1为现有技术中的指示 S-TMSI的寻呼过程的流程示意图; 图 2为现有技术中的指示 IMSI的寻呼过程的流程示意图; 图 3为现有技术中一种在 MME复位后恢复 UE的上下文信息的 方法的流程示意图;
图 4为现有技术中的 UE在 MME失效后再次发起附着的流程示 意图;
图 5为本发明实施例所提出的一种 IMSI Paging消息的处理方法 的流程示意图;
图 6为本发明实施例所提出的一种具体应用场景下的 UE上定时 器处理机制的流程示意图;
图 7为本发明实施例所提出的一种具体应用场景下的 UE接收到 IMSI Paging消息后的处理流程的示意图;
图 8为本发明实施例提出的一种终端设备的结构示意图。 具体实施方式
如背景技术所述,在 EPS系统中, 为了确保 MME失效对用户体 验不造成较为严重的负面影响,现有的技术方案提出在 MME在复位 后根据 S-GW存储的终端 IMSI, TA list信息发起寻呼过程, 促使终 端设备重新附着至网络,从而重新建立因失效而丟失的终端设备的上 下文信息。
然而, 如果终端设备在原有 MME失效期间已附着至新 MME, 这样的优化机制会导致终端设备重复发起附着过程,而给用户体验造 成不利影响。
为此, 本发明实施例基于计时控制机制, 提出了一种能够有效解 决终端设备无谓响应 IMSI Paging消息, 而重复发起网络附着请求问 题的方法。
如图 5所示, 为本发明实施例提出的一种 IMSI Paging消息的处 理方法的流程示意图, 该方法具体包括以下步骤:
步骤 S501、 终端设备附着到网络中的 MME。
步骤 S502、 终端设备判断当前所附着的 MME是否与先前所附 着的 MME相同。
如果判断的结果为不相同, 执行步骤 S503;
如果判断的结果为相同, 执行步骤 S504。
在具体的应用场景中, 本步骤中的判断处理过程, 具体如下: 终端设备接收当前所附着的 MME分配的 GUTK Globally Unique Temporary UE Identity , 全球唯一临时终端标识)。
终端设备根据当前所附着的 MME分配的 GUTI和先前所附着的 MME分配的 GUTI中的信息, 判断当前所附着的 MME是否与先前 所附着的 MME相同。
具体的, EPS系统核心网的 MME为 UE分配的 GUTI具有如下 结构:
<GUTI> = <GUMMEIxM-TMSI> ,
其中, <GUMMEI> = <MCCxMNCxMME Identifier ,
<MME Identifier = <MME Group IDxMME Code>。
对不同的 MME所分配的 GUTI, 其中的 MME Identifier ( MME 标识符 )信息必然不同, 所以, 通过比较 GUTI中的 MME Identifier 信息, 可以进行当前附着的 MME是否发生变化的判断。
步骤 S503、 终端设备启动计时操作, 在计时操作结束前, 终端 设备拒绝响应接收到的 IMSI Paging消息。
其中, 计时操作所持续的时间长度为计时周期。
如果计时操作结束, 则执行步骤 S504。
在实际应用中, 根据计时周期的配置方案差别, 本步骤的具体处 理过程包括以下两种情况:
情况一、 终端设备在自身的数据卡获取预设的计时周期, 并根据 计时周期所对应的时间进行计时操作。
在此种情况下, 计时周期是预配置的, 运营商可以直接将适当的 计时周期信息存储于数据卡中, 例如,( U ) SIM ( Universal Subscriber Identity Module, 全球用户身份单元)卡。
情况二、 终端设备获取接收到的配置消息中所携带的计时周期, 并根据计时周期所对应的时间进行计时操作。
对于此种情况, 计时周期是可以动态配置的, 网络侧可以根据网 络系统当前的运行情况,为终端设备配置适合当前网络系统状态的计 时周期,具体的配置方式可以是通过动态配置机制向终端设备发送携 带计时周期的配置信息,终端设备通过该配置信息获取计时周期的相 关信息, 并在需要进行计时操作时, 根据计时周期进行计时操作。 在具体的应用场景中,上述的计时操作可以通过启动定时器的方 式来完成, 该定时器所设定的时间长度等于计时周期。
需要进一步指出的是, 上述的计时周期的大小, 具体通过以下方 式确定:
方式一、设定计时周期的大小等于 S-GW检测到 MME失效后为 防止所保存的终端设备信息过时所设置定时器的时间长度大小。
这是一种定值确定方式, 在确定 S-GW中定时器的时间长度后, 计时周期的大小也随之确定,
此种方式保持了终端侧和网络侧对于 MME复位过程所需的最大 延迟时间的统一。该时间范围是 MME在复位后从 S-GW接收终端相 关信息的最大时间区间。 超过该时间区间后, 复位后的 MME不会从 S-GW 接收到终端的相关信息, 终端也将不会再接收到复位后的 MME发送的 IMSI Paging消息, 自然, 也就不会出现终端设备无谓 响应 IMSI Paging消息的情况。
方式二、 根据系统统计信息, 确定计时周期的大小。
这是一种非定值确定方式, 根据不同的网络系统状态, 甚至统计 网络系统在不同时期的状态信息, 都可能确定出不同大小的计时周 期。
这样的方式需要综合考虑网络系统中的各项统计信息,并结合相 应的运行维护和管理经验, 进而确定相应的计时周期, 这样的确定过 程中, 还会加入确定者的主观因素, 确定者的经验以及对当前情况的 判断的准确性, 都会对最终确定的计时周期的大小产生影响。
在具体的应用场景中,具体应用上述的哪种方式进行计时周期的 确定可以根据实际需要进行设定和调整,这样的变化并不影响本发明 的保护范围。
步骤 S504、 当终端设备接收到 IMSI Paging消息时, 终端设备响 应接收到的 IMSI Paging消息。
与现有技术相比, 本发明实施例具有以下优点: 通过应用本发明实施例的技术方案,在终端设备附着到网络中的
MME之后, 如果所附着的 MME发生了变化, 则终端设备启动计时 操作, 并在计时操作结束前, 拒绝响应接收到的 IMSI Paging消息, 从而,能够在 MME复位的情况下,有效解决终端设备无谓响应 IMSI Paging消息, 而重复发起网络附着请求过程的问题, 并且该技术方案 具有对现有操作流程修改小, 易于实现的特点。
下面, 结合具体的应用场景, 对本发明实施例所提出的技术方案 进行说明。
UE先前所附着的 MME失效之后, 如果 UE发起新的 Attach过 程附着至一个新的 MME,那么,新的 MME将通过 Attach Accept (附 着接受 ) 消息携带为该 UE分配的新的 GUTI发送给该 UE。
而对于 UE而言,在收到 Attach Accept消息之后,通过将新 GUTI 与旧 GUTI中的 MME Identifier做比较, 便可以确定当前自身已附着 至一个新的 MME上。为了避免响应旧的 MME在复位后发送的 IMSI Paging消息, UE在判断自身已附着至新的 MME之后, 应在一段时 间之内对网络发送的 IMSI Paging消息不进行响应。
为了方便说明,本发明实施例通过图 6和图 7共同对上述的技术 方案进行说明。
如图 6 所示, 为本发明实施例所提出的一种具体应用场景下的 UE上定时器处理机制的流程示意图, 具体包括以下步骤:
步骤 S601、 UE在先前所附着的 MME失效后, 重新发起 Attach 过程。
步骤 S602、 UE接收到 Attach Accept消息。
Attach Accept消息中携带有分配给 UE的 GUTI, 而 GUTI中携 带有分配该 GUTI的 MME的 MME Identifier信息。
步骤 S603、 UE判断所附着的 MME是否发生了改变。
在步骤 S601之前, UE中存储有先前 MME分配的 GUTI,所以, 在本步骤中, UE可以比较新旧 GUTI, 判断其中的 MME Identifier 信息是否发生了变化,从而确定在重新发起 Attach过程前后,所附着 的 MME是否发生了改变。
如果发生了改变, 执行步骤 S604;
如果没有发生改变, 直接执行步骤 S605。
需要进一步指出的是, 如果 UE在步骤 S601之前没有存储先前 MME分配的 GUTI,或者所存储的先前 MME分配的 GUTI的信息无 法正常用于后续的比较, 则 UE直接确定所附着的 MME没有发生改 变, 执行步骤 S605。
步骤 S604、 UE启动定时器。
在定时器超时之前, 如果 UE接收到网络发送的 IMSI Paging消 息, UE对其不响应。
当定时器超时后, 执行步骤 S605。
步骤 S605、 UE进行正常的后续处理。
由前述的技术方案可知, 实现本步骤的前提有两种情况, 一种是 步骤 S603中的判断结果为 MME没有发生改变, 另一种是步骤 S604 中所设定的定时器超时,无论是上述的哪种情况,在本步骤的处理中, 如果 UE接收到网络发送的 IMSI Paging消息, UE都会对其进行响应。
需要进一步指出的是,在前述的步骤 S604中, UE所启动的定时 器中的时长可以采取以下的两种方式进行配置, 具体说明如下:
方式一、 预配置。
运营商将适当的定时器的时长参数预先存储于 (U ) SIM卡中, UE在需要启动定时器时, 从(U ) SIM卡读取相关参数信息。
需要进一步指出的是, 上述的预配置信息不仅可以存储在(U ) SIM卡中, 也可以存储在 STK ( SIM TOOL KIT, 用户识别应用发展 工具)卡、 UTK ( User identity model card Tool Kit, 用户识别模块卡 开发工具包)卡, 以及其他类型的数据卡, 甚至 UE自身所带的存储 空间中, 凡是可以使 UE在需要启动定时器时, 能够获取到时长参数 的存储方式, 都属于本发明的保护范围。
方式二、 动态配置。
运营商可以根据网络系统运行情况通过动态配置机制将定时器 时长参数配置到终端中, 其中, 具体的动态配置机制, 可以如 OMA DM ( Open Management Architecture Device Management, 开放管理架 构下的设备管理)机制。
除此之外,其他能够为终端动态配置定时器时长参数的方式也可 以应用于本发明实施例所提出的技术方案中,这样的变化并不影响本 发明的保护范围。
另一方面,通过上述方式所配置的时长信息的具体大小也可以通 过以下两种方式确定:
1、 运营商将 UE中定时器的时长参数设置为与前述的 S-GW所 使用定时器相同的值。
2、 运营商根据系统运行、 维护、 管理经验或网络系统统计数据 为终端确定合适的定时器时长参数值。
除此之外,其他能够确定时长参数具体大小的方式也可以应用于 本发明实施例所提出的技术方案中,这样的变化并不影响本发明的保 护范围。
基于上述的定时器处理机制, 如图 7所示, 为本发明实施例所提 出的一种具体应用场景下的 UE接收到 IMSI Paging消息后的处理流 程的示意图, 具体包括以下步骤:
步骤 S701、 UE接收到 IMSI Paging消息。
步骤 S702、 UE判断当前是否启动了定时器。
一方面, 可以判断是否存在定时器, 另一方面, 如果定时器始终 存在, 则可以进一步判断当前定时器是否超时, 具体说明如下: 如果 UE中的机制是在 UE超时后即取消定时器, 那么, 可以直 接通过是否存在定时器完成本步骤的判断。
如果 UE中始终存在定时器, 并且定时器存在启动与停止两种状 态时, 本步骤的判断则是判断当前定时器是否处于启动状态, 或是否 超时。
如果判断结果为是, 则执行步骤 S703;
如果判断结果为否, 则执行步骤 S704。 步骤 S703、 UE拒绝响应该 IMSI Paging消息。
步骤 S704、 UE响应该 IMSI Paging消息。
需要指出的是, 上述的操作过程不仅局限于 EPS 系统, 也可以 扩展至 GPRS ( General Packet Radio Service ) 系统, 具体的操作流程 与此相似, 不再赘述。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案,在终端设备附着到网络中的
MME之后, 如果所附着的 MME发生了变化, 则终端设备启动计时 操作, 并在计时操作结束前, 拒绝响应接收到的 IMSI Paging消息, 从而能够在 MME复位的情况下, 有效解决终端设备无谓响应 IMSI Paging消息, 而重复发起网络附着请求过程的问题, 并且该技术方案 具有对现有操作流程修改小, 易于实现的特点。
为了实现本发明实施例的技术方案,本发明实施例还提出了一种 终端设备, 其结构示意图如图 8所示, 具体包括:
判断模块 81 ,用于当终端设备附着到网络中的 MME后,判断当 前所附着的 MME是否与先前所附着的 MME相同;
计时模块 82, 用于在判断模块 81的判断结果为不相同时, 启动 计时操作, 其中, 计时操作所持续的时间长度为计时周期;
通信模块 83 , 用于在计时模块 82所启动的计时操作结束前, 拒 绝响应接收到的 IMSI Paging消息。
其中, 如果判断模块 81的判断结果为相同, 或计时模块 82的计 时操作已结束, 则通信模块 83还用于当接收到 IMSI Paging消息时, 响应接收到的 IMSI Paging消息。
在具体的应用场景中, 通信模块 83 , 还用于接收当前所附着的 MME分配的 GUTL
在此种情况下, 判断模块 81 , 具体用于根据通信模块 83所接收 到的当前所附着的 MME分配的 GUTI和先前所附着的 MME分配的 GUTI中的信息,判断当前所附着的 MME是否与先前所附着的 MME 相同。 需要指出的是, 计时模块 82, 具体用于进行以下两种处理:
1、 在自身的数据卡获取预设的计时周期, 并根据计时周期所对 应的时间进行计时操作。
2、 获取接收到的配置消息中所携带的计时周期, 并根据计时周 期所对应的时间进行计时操作。
在此种情况下, 通信模块 83, 还用于接收携带计时周期的配置 消息,携带时长信息的配置消息为网络侧根据当前系统状态通过动态 配置机制发送给终端设备的消息;
计时模块 82 , 还用于在通信模块 83所接收到的配置消息中获取 计时周期。
在上述的两种处理过程中,计时周期的大小, 具体等于 S-GW检 测到 MME失效后为防止所保存的终端设备信息过时所设置定时器的 时间长度大小, 或根据系统统计信息进行确定。
在具体的应用场景中, 计时模块 82进行计时处理的具体方式可 以为启动定时器进行计时, 其中, 定时器所设定的时间长度等于计时 周期。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案,在终端设备附着到网络中的 MME之后, 如果所附着的 MME发生了变化, 则终端设备启动计时 操作, 并在计时操作结束前, 拒绝响应接收到的 IMSI Paging消息, 从而,能够在 MME复位的情况下,有效解决终端设备无谓响应 IMSI Paging消息, 而重复发起网络附着请求过程的问题, 并且该技术方案 具有对现有操作流程修改小, 易于实现的特点。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明实施例可以通过硬件实现,也可以借助软件加必要的通用硬 件平台的方式来实现。基于这样的理解, 本发明实施例的技术方案可 以以软件产品的形式体现出来,该软件产品可以存储在一个非易失性 存储介质 (可以是 CD-ROM, U盘, 移动硬盘等) 中, 包括若干指 令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络 设备等)执行本发明实施例各个实施场景所述的方法。
本领域技术人员可以理解附图只是一个优选实施场景的示意图, 附图中的模块或流程并不一定是实施本发明实施例所必须的。
本领域技术人员可以理解实施场景中的装置中的模块可以按照 实施场景描述进行分布于实施场景的装置中,也可以进行相应变化位 于不同于本实施场景的一个或多个装置中。上述实施场景的模块可以 合并为一个模块, 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施场景的优劣。 明实施例并非局限于此,任何本领域的技术人员能思之的变化都应落 入本发明实施例的业务限制范围。

Claims

权利要求
1、 一种国际移动用户识别码寻呼 IMSI Paging消息的处理方法, 其特征在于, 包括:
当终端设备附着到网络中的移动性管理实体 MME后,所述终端 设备判断当前所附着的 MME是否与先前所附着的 MME相同;
如果所述判断的结果为不相同, 则所述终端设备启动计时操作, 在所述计时操作结束前, 所述终端设备拒绝响应接收到的 IMSI Paging消息, 其中, 所述计时操作所持续的时间长度为计时周期。
2、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括: 如果所述判断的结果为相同, 或所述计时操作已结束, 则当所述 终端设备接收到 IMSI Paging消息时, 所述终端设备响应接收到的所 述 IMSI Paging消息。
3、 如权利要求 1所述的方法, 其特征在于, 所述当终端设备附 着到网络中的 MME后, 所述终端设备判断当前所附着的 MME是否 与先前所附着的 MME相同, 具体为:
所述终端设备接收当前所附着的 MME分配的全球唯一临时终端 标识 GUTI;
所述终端设备根据所述当前所附着的 MME分配的 GUTI和先前 所附着的 MME分配的 GUTI中的信息,判断所述当前所附着的 MME 是否与所述先前所附着的 MME相同。
4、 如权利要求 1所述的方法, 其特征在于, 所述终端设备启动 计时操作, 具体为:
所述终端设备从自身的数据卡获取预设的计时周期,并根据所述 计时周期所对应的时间进行计时操作; 或,
所述终端设备从接收到的配置消息中获取该配置消息所携带的 计时周期, 并根据所述计时周期所对应的时间进行计时操作。
5、 如权利要求 4所述的方法, 其特征在于, 所述终端设备启动 计时操作, 具体为: 所述终端设备启动定时器进行计时,所述定时器所设定的时间长 度等于所述计时周期。
6、 如权利要求 4所述的方法, 其特征在于, 所述终端设备从接 收到的配置消息中获取该配置消息所携带的计时周期, 具体为: 所述终端设备接收携带计时周期的配置消息后从所述配置消息 中获取所述计时周期, 其中, 所述携带时长信息的配置消息为网络侧 根据当前系统状态通过动态配置机制发送给所述终端设备的消息。
7、 如权利要求 4所述的方法, 其特征在于, 所述计时周期的大 小, 具体通过以下方式确定:
设定所述计时周期的大小等于服务网关 S-GW检测到 MME失效 后为防止所保存的终端设备信息过时所设置定时器的时间长度大小; 或,
根据系统统计信息, 确定所述计时周期的大小。
8、 一种终端设备, 其特征在于, 包括:
判断模块, 用于当所述终端设备附着到网络中的 MME后, 判断 当前所附着的 MME是否与先前所附着的 MME相同;
计时模块, 用于在所述判断模块的判断结果为不相同时, 启动计 时操作, 其中, 所述计时操作所持续的时间长度为计时周期;
通信模块, 用于在所述计时模块所启动的计时操作结束前, 拒绝 响应接收到的 IMSI Paging消息。
9、 如权利要求 8所述的终端设备, 其特征在于, 如果所述判断 模块的判断结果为相同, 或所述计时模块的计时操作已结束,
所述通信模块, 还用于当接收到 IMSI Paging消息时, 响应接收 到的所述 IMSI Paging消息。
10、 如权利要求 8所述的终端设备, 其特征在于,
所述通信模块, 还用于接收当前所附着的 MME分配的 GUTI; 所述判断模块,具体用于根据所述通信模块所接收到的当前所附 着的 MME分配的 GUTI和先前所附着的 MME分配的 GUTI中的信 息, 判断所述当前所附着的 MME是否与所述先前所附着的 MME相 同。
11、如权利要求 8所述的终端设备,其特征在于,所述计时模块, 具体用于:
从自身的数据卡获取预设的计时周期,并根据所述计时周期所对 应的时间进行计时操作; 或,
从接收到的配置消息中获取该配置消息所携带的计时周期,并根 据所述计时周期所对应的时间进行计时操作;
12、 如权利要求 8-11之一所述的终端设备, 其特征在于, 所述 计时周期的大小,具体等于 S-GW到检测 MME失效后为防止所保存 的终端设备信息过时所设置定时器的时间长度大小,或根据系统统计 信息进行确定。
13、 如权利要求 11所述的终端设备, 其特征在于, 所述计时模 块, 具体用于:
启动定时器进行计时,所述定时器所设定的时间长度等于所述计 时周期。
14、 如权利要求 11所述的终端设备, 其特征在于, 所述计时模 块从接收到的配置消息中获取该配置消息所携带的计时周期, 具体 为:
所述通信模块, 还用于接收携带计时周期的配置消息, 所述携带 时长信息的配置消息为网络侧根据当前系统状态通过动态配置机制 发送给所述终端设备的消息;
所述计时模块,还用于从所述通信模块所接收到的配置消息中获 取所述计时周期。
PCT/CN2011/078386 2010-08-25 2011-08-12 Imsipaging消息的处理方法和设备 WO2012025018A1 (zh)

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