WO2009094951A1 - Procédé et dispositif de transmission de l'information d'identification d'un terminal d'abonné - Google Patents

Procédé et dispositif de transmission de l'information d'identification d'un terminal d'abonné Download PDF

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Publication number
WO2009094951A1
WO2009094951A1 PCT/CN2009/070307 CN2009070307W WO2009094951A1 WO 2009094951 A1 WO2009094951 A1 WO 2009094951A1 CN 2009070307 W CN2009070307 W CN 2009070307W WO 2009094951 A1 WO2009094951 A1 WO 2009094951A1
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WIPO (PCT)
Prior art keywords
information
identification information
node
user terminal
network
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PCT/CN2009/070307
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English (en)
French (fr)
Inventor
Xiaolong Guo
Wanqiang Zhang
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009094951A1 publication Critical patent/WO2009094951A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and a device for sending user terminal identification information. Background technique
  • MCC + MNC is the identifier of PLMN (Pulic Land Mobile Network);
  • LAC + RAC can determine POOL (resource pool) within a PLMN;
  • P-TMSI can determine the unique core network entity within a POOL And UE;
  • RAI Raster Image Identification
  • the SGSN (Serving GPRS Supporting Node) allocates a Packet Temporary Mobile Subscriber Identity (P-TMSI) to the UE to temporarily identify the UE registered in this area, including the NRI ( Network Resource Indication (Network Resource Identification) information, used to identify an SGSN within the POOL.
  • P-TMSI Packet Temporary Mobile Subscriber Identity
  • NRI Network Resource Indication (Network Resource Identification) information
  • GUTI Globally Unique Temporary Indication
  • MCC MNC + MME (Mobile Management Entity, Mobile Management Entity) Group ID + MME code + M-TMSI (MME Temporary Mobile Subscriber Identity, Mobile Management Entity Temporary Mobile User Identity) uniquely identifies a UE.
  • M-TMSI MME Temporary Mobile Subscriber Identity, Mobile Management Entity Temporary Mobile User Identity
  • the M-TMSI is allocated by the MME and is unique within the MME.
  • the MME Group ID + MME code constitutes the MME identified MMEI) uniquely identifies the MME within one PLMN.
  • the MCC + MNC + MMEI constitutes a GUMMEK Globally Unique MME Identifier, a globally unique MME ID, ie the identity of the core network node MME, to uniquely determine an MME.
  • the MCC + MNC + MME Group ID + MME code + M-TMSI assigned by the old MME needs to be notified to the new MME, and the UE needs to be used when the UE accesses the network.
  • the access network node selects the information of the core network node (NAS (Non Access Layer) node selection) in the pool and sends the information to the access network node.
  • NAS Non Access Layer
  • this information is NRI, which is part of the P-TMSI.
  • this selection information may be MME code.
  • the UE carries the P- in the RRC (Radio Resource Control) initial direct transmission message (the message sent by the UE to the RAN (Radio Access Network) node) in the 2G/3G.
  • the TMSI information is used for CN (Core Net) node selection, and in the NAS message (the UE sends to the CN node) carries the P-TMSI and the RAI for the CN node to identify the UE, wherein the NAS message is transparent to the RAN node.
  • the RAN node does not parse the NAS message and only performs transparent transmission.
  • the UE accesses the 2G/3G network
  • the UE sends the P-TMSI information to the RAN node, and the RAN node selects the correct CN node according to the P-TMSI. If there is no P-TMSI information in the UE, the UE will provide IMSI for access. At this time, the access network node selects an appropriate CN node according to the principle of load balancing.
  • the inventor finds that: when the UE accesses the network, the UE needs to select the core network node (NAS (Non Access Layer) node) in the pool for the access network node. The information selected is sent to the access network node. Usually, the UE will directly send information to the access network mechanically, which will result in information redundancy.
  • NAS Non Access Layer
  • an embodiment of the present invention provides a method and a device for transmitting user terminal identification information, so that when a CN node needs to be reselected, the RAN node can correctly select a CN node.
  • an embodiment of the present invention provides a method for sending identification information, including the following steps:
  • the user terminal identification information includes the core network CN node selection information and the user terminal self-identification information; and the user terminal identification information is sent to the network side, where the user terminal
  • the identification information is used by the network side to select a CN node and identify the user terminal.
  • An embodiment of the present invention further provides a user equipment, including:
  • An information determining unit configured to determine user terminal identification information according to a configuration situation of the network side, where the user terminal identification information includes CN node selection information of the core network and identity information of the user terminal itself;
  • the identifier information sending unit is configured to send the user terminal identification information to the network side, where the user terminal identifier information is used by the network side to select a CN node and identify the user terminal.
  • An embodiment of the present invention further provides a method for transmitting identification information, where a RAN node in a network sends broadcast information including identification information of a pool in which a cell is located.
  • the UE may send a message carrying the optimal UE identification information to the core network, where the UE identification information is used for core network node selection and identity of the own device, and is guaranteed.
  • the RAN node of the core network can correctly select the CN node when the CN node needs to be reselected, and the CN node can correctly identify the UE.
  • optimizing the identification information of the UE to be carried it can save Network resources and reduce the complexity of the message and can be successfully selected in the pool to the unified SGSN and MME entities.
  • the UE Before transmitting the information to the network side, the UE selects and determines the information to carry the optimal information, so that when the CN node needs to be reselected, the RAN node can correctly select the CN node and reduce the information redundancy.
  • FIG. 1 is a flowchart of a method for transmitting user terminal identification information according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a UE in an LTE TAU in the case where Pool-ID information exists in broadcast information according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of a TAU of a UE in LTE in a case where there is no Pool-ID information in broadcast information according to Embodiment 2 of the present invention
  • FIG. 4 is a flow chart of the UE in the LTE TAU in the case where the Pool-ID information exists in the broadcast information according to the third embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description
  • the UE acquires the configuration of the current network, and sends different identification information to the network side according to different situations, and is used for the RAN node to select the CN node and the CN node to identify itself.
  • the RAN node in the network is an eNodeB
  • the CN node is an MME.
  • a method for transmitting user terminal identification information includes the following steps:
  • the step slO1 determines the user terminal identification information according to the configuration of the network side, and the user terminal identification information includes the CN network node selection information of the core network and the identity information of the user terminal itself.
  • Step sl02 sending user terminal identification information to the network side, where the user terminal identification information is used by the network side to select the CN node and identify the user terminal.
  • the UE can be used in different network situations.
  • Sending a message carrying the optimal UE identity information to the core network the UE identity information is used for the core network node selection and the identity of the own device, and ensuring that the RAN node of the core network can correctly select the CN node when the CN node needs to be reselected.
  • the CN node can correctly identify the UE.
  • the UE selects and determines the information to carry the optimal information, so that when the CN node needs to be reselected, the RAN node can correctly select the CN node and reduce the information redundancy.
  • the network side broadcasts the pool-id of the current cell through the system broadcast message
  • the UE can obtain the Pool-id of the current cell by using the broadcast message of the system
  • the Pool-id can be the MME Group Id. It can also be MCC + MNC + MME Group Id.
  • the process for prompting the user terminal identification information by using the TAU (Tracking Area Update) in the LTE is as shown in FIG. 2, which specifically includes the following steps:
  • Step s201 The UE sends a TAU Request message to the eNodeB, and carries the CN node selection information and its own identification information in the message. According to different network conditions, the identifier information carried by the UE in the TAU Request message is different.
  • the specific carrying method is as follows:
  • the information for the CN node selection included in the TAU request message sent to the eNodeB is at least the MME code, and the information used by the CN node to identify the UE is at least M. -TMSI;
  • the UE determines that the accessed pool changes or the PLMN changes, the UE enters a new pool, and the information for the CN node selection included in the TAU request message sent to the eNodeB may be: an indication indicating that the eNodeB selects a new MME. Or the cause value, or the information of the old pool, the information of the old pool is used to notify the RAN node that the RAN node determines to select a new CN node, and the information obtained by the CN node for identifying the UE is at least MME code + M-TMSL
  • the information for the CN node selection included in the TAU request message sent to the eNodeB may be: an indication or a cause value indicating that the eNodeB selects a new MME, or an old pool
  • the information is used to notify the RAN node that the RAN node decides to select a new CN node, but at this time, the information that the CN node needs to obtain to identify the UE may be different, and the information that the CN node needs to acquire is further combined with different situations. Description.
  • the information for the CN node selection included in the TAU request message sent to the eNodeB is at least the MME code, and the information obtained by the CN node for identifying the UE is at least M-TMSI; If the UE determines that the PLMN does not change but needs to change the accessed pool, the information used for the CN node selection may be: an indication or a cause value indicating the eNodeB to select a new MME, or an old pool Information, the information is used to notify the RAN node to determine to select a new CN node; at this time, the information obtained by the CN node for identifying the UE is at least MME Group ID + MME code + M-TMSI;
  • the information for the CN node selection may be: an indication or a cause value indicating the eNodeB to select a new MME, or the old pool information, the information is used to notify the RAN node to determine Selecting a new CN node; at this time, the information obtained by the CN node for identifying the UE is at least MCC + MNC + MME Group ID + MME code + M-TMSI;
  • the information for CN node selection may be: an indication indicating that the eNodeB selects a new MME or The reason value, or the information of the old pool, is used to notify the RAN node that the RAN node decides to select a new CN node; at this time, the information acquired by the CN node for identifying the UE is at least MME Group ID + MME code + M -TMSI; If the PLMN changes, the information for the CN node selection may be: an indication or a cause value indicating the eNodeB to select a new MME, or an old pool information, which is used to notify the RAN node that the RAN node decides to select a new one.
  • the CN node; at this time, the information obtained by the CN node for identifying the UE is at least MCC + MNC
  • the information for the CN node selection included in the TAU request message sent to the eNodeB is at least MME Group ID + MME code, and the CN node obtains information for identifying the UE.
  • the information for the CN node selection included in the TAU request message sent to the eNodeB is at least MCC + MNC + MME Group ID + MME code, and the CN node obtains the identifier.
  • the information of the UE is at least M-TMSI;
  • the information for the CN node selection may be: an indication or a cause value indicating that the eNodeB selects a new MME, or an old pool information, used to notify the RAN node that the RAN node determines to select a new CN node;
  • the information obtained by the CN node for identifying the UE is at least MCC + MNC + MME Group ID + MME code + M-TMSI.
  • the pools of different PLMNs may not carry the MME Group ID.
  • Step s202 The eNodeB sends a TAU request message to the selected MME, where the MME needs to obtain the UE identity information as shown above.
  • Step s203 If the MME changes, the MME parses the address of the old MME according to the information reported by the UE, and requests the context with the old MME.
  • Step s204 After obtaining the context information, the new MME determines whether it needs to perform authentication with the UE, and if necessary, performs a security function, and the step is optional.
  • Step s205 If the S-GW also changes, the new MME creates a bearer to the new S-GW and updates the bearer to the P-GW.
  • Step s206 the new MME initiates a location update to the HSS, where the HSS is to be sent The location of the old MME is deleted.
  • Step s207 The new MME determines that the tracking area update request of the UE can be accepted, and sends a TAU accept message to the UE.
  • Step s208 If the UE receives the new GUTI information that is allocated by the MME, the MME returns a TAU complete message to confirm that the newly allocated S-TMSL has been successfully received.
  • the TAU Request process is taken as an example for description. In other processes in which the UE accesses the network, such as an Attach Attachment and a Service Request Service Request, the UE determines and carries the information mechanism similar to the above, and details are not described herein.
  • the information required for the RAN node to perform the CN node selection may be carried in the RRC (Radio Resource Control) message, and the identifier information of the UE that the CN node needs to acquire is carried in the NAS message, and the NAS is The message is sent to the RAN node through the RRC message as part of the RRC message. After the RAN node performs CN node selection according to the content in the RRC message, the NAS message content carried in the RRC message is forwarded to the CN node.
  • RRC Radio Resource Control
  • both of the information are in the NAS message, and the RAN node can read the NAS message; or the information that the UE sends to the RAN node for CN node selection is in the RRC message, and if the CN node also needs this part
  • the information may not be carried in the NAS message, and the RAN node reads the information and then forwards the information to the CN node. It may also be information required by the UE to select the CN node by the RAN node, and the CN node to the user terminal.
  • the information required for the identification is added to the RAN message and sent to the RAN node, and the RAN node forwards the information required to identify the user terminal to the CN node.
  • the bearer message carrying the information provided by the UE changes, and the UE's decision mechanism does not change, and will not be described again.
  • the network side does not broadcast the Pool-id to which the current cell belongs, and the UE cannot obtain the Pool-id to which the current cell belongs.
  • the process for the UE in the LTE to prompt the user terminal identification information through the TAU is as shown in FIG. 3, and specifically includes the following steps:
  • Step s301 The UE sends a TAU Request message to the eNodeB, where the message carries the CN node selection information and its own identification information. According to different network conditions The identity information carried by the UE in the TAU Request message is different.
  • the specific carrying method is as follows:
  • the information for CN node selection included in the TAU request message sent to the eNodeB is at least MME code, and the information used by the CN node to identify the UE is at least MME code + M-TMSI; if the PLMN accessed by the UE changes The UE also needs to notify the RAN node of the selected PLMN information.
  • the information for the CN node selection included in the TAU request message sent to the eNodeB may be: instruct the eNodeB to select a new MME indication or cause value, or the old pool information, It is used to notify the RAN node that the RAN node decides to select a new CN node, but at this time, the information that the CN node needs to acquire may be different.
  • the information for the CN node selection included in the TAU request message sent to the eNodeB is at least the MME Group ID + MME code, and the information obtained by the CN for identifying the UE is at least MME.
  • the information for the CN node selection may be: an indication or a cause value indicating that the eNodeB selects a new MME, or an old pool information, used to notify the RAN node that the RAN node determines to select a new CN node.
  • the information obtained by the CN for identifying the UE is at least MCC + MNC + MME Group ID + MME code + M-TMSI.
  • the information for the CN node selection included in the TAU request message sent to the eNodeB is at least MCC + MNC + MME Group ID + MME code
  • the information obtained by the CN node for identifying the UE is at least MME Group ID + MME code + M-TMSI;
  • the information obtained by the CN for identifying the UE is at least MCC + MNC + MME Group ID + MME code + M-TMSI.
  • the MME Group ID may not be carried.
  • Step s302 The eNodeB sends a TAU request message to the selected MME, where the MME needs to obtain the UE identity information as shown above.
  • Step s303 If the MME changes, the MME parses the address of the old MME according to the information reported by the UE, and requests the context with the old MME.
  • Step s304 After obtaining the context information, the new MME determines whether it needs to perform authentication with the UE, and if necessary, performs a security function, which is optional.
  • Step s305 If the S-GW also changes, the new MME creates a bearer to the new S-GW and updates the bearer to the P-GW.
  • Step s306 The new MME initiates a location update to the HSS, where the HSS sends a location deletion to the old MME.
  • Step s307 The new MME determines that the tracking area update request of the UE can be accepted, and sends a TAU accept message to the UE.
  • Step s308 If the UE receives the new GUTI information that is allocated by the MME, the MME returns a TAU complete message to confirm that the newly allocated S-TMSL has been successfully received.
  • the TAU Request process is taken as an example for description. In other processes in which the UE accesses the network, for example, in an Attach, Service Request, and the like, the UE determines and carries the information mechanism similar to the above, and details are not described herein.
  • the information required for the RAN node to perform the CN node selection may be carried in the RRC message (Radio Resource Control) message, and the identifier information of the UE that needs to be acquired by the CN node is carried in the NAS message, and the The NAS message is simultaneously sent to the RAN node through the RRC message as part of the RRC message.
  • the NAS message content is forwarded to the CN node.
  • the RAN node can read the NAS message; the information that the UE sends to the RAN node for CN node selection is in the RRC message, and if the CN node also needs this part of information, it may not be in the NAS message. Carrying, and the RAN node reads the information and then forwards it to the CN node. It may also be that the information required by the UE to select the CN node by the RAN node and the information required by the CN node to identify the user terminal are added. The RAN message is sent to the RAN node, and the RAN node forwards the information required to identify the user terminal to the CN node.
  • Embodiments 1 and 2 If the UE has only one temporary identification information, then 1 ⁇ will use the unique temporary identification information for the CN node to select and identify itself; if the UE has two temporary identification information, then the UE will The temporary identification information of the system is used for CN node selection, and both temporary identification information is provided to the network.
  • the network side broadcasts the Pool-id to which the current cell belongs, and the UE obtains the Pool-id to which the current cell belongs and determines:
  • the UE accesses the LTE, the broadcasted Group id and the Group in the own GUTI are found. If the id is consistent, the UE will provide the LTE side identification information for RAN node selection, which may be GUTI or GUMMEI or MME code.
  • the UE accesses LTE and finds that the broadcast Group id does not match the Group id in its own GUTI, the UE The identification information on the 2G/3G side will be provided for RAN node selection, which may be P-TMSI or NRI.
  • the UE accesses the LTE of the pool by accessing the SGSN/MME of the new pool through the 2G/3G, and then the UE in the LTE performs the prompting process of the user terminal identification information through the TAU. 4, specifically includes the following steps:
  • Step s401 - s402 the UE sends a TAU Request message to the network, and the UE finds that the POP of the LTE broadcast is inconsistent with the stored one, and determines that the UE enters a new pool.
  • the UE carries the identification information of another system to perform CN node selection.
  • the UE notifies the eNodeB of the P-TMSI or NRI information, and the eNodeB selects the unified SGSN/MME according to this information.
  • Step s403 At this time, the MME changes, and the MME solves according to the information on the UE. The address of the old MME is extracted, and the context is requested with the old MME.
  • Step S 404 After obtaining the context information, the new MME determines whether it is necessary to perform authentication with the UE, and if necessary, performs a security function, which is optional.
  • Step s405 If the S-GW also changes, the unified MME creates a bearer to the new S-GW and updates the bearer to the P-GW.
  • Step s406 The unified MME initiates a location update to the HSS, where the HSS initiates a location deletion to the old MME.
  • Step s407 The unified MME determines that the tracking area update request of the UE can be accepted, and sends a TAU accept message to the UE.
  • Step s408 If the UE receives the new GUTI information, the MME returns a TAU complete message to confirm that the newly allocated S-TMSL has been successfully received.
  • the TAU Request process is taken as an example for description. In other processes in which the UE accesses the network, for example, in an attach process, the UE determines and carries the information mechanism similar to the above, and details are not described herein.
  • the UE if the UE has only one temporary identification information, the UE uses the unique temporary identification information for the CN node to select and identify itself; if the UE has two temporary identification information, the UE will use the above determination mechanism. Used for CN node selection, and provides two temporary identification information to the network.
  • the embodiment of the present invention further provides a method for transmitting identification information, where a radio access network RAN node in the network sends broadcast information including identification information of a pool in which the cell is located.
  • the identifier information of the pool where the cell is located is specifically a group identifier Group id.
  • the UE when the UE accesses the EUTRAN and finds that the group id of the broadcast is consistent with the group id of the global unique temporary identifier GUTI, the UE provides the identifier information of the EUTRAN side for CN node selection, and the identifier information includes at least MME Code information, the MME Code information is specifically one of GUTI, GUMMEL MMEI, or MME Code; when the UE accesses the EUTRAN and finds that the broadcast Group id does not match the Group id in the own GUTI, the UE provides 2G.
  • the identification information of the /3G side is used for CN node selection, and the identification information includes at least NRI information, and the NRI information is P-TMSI or NRI.
  • the information of the UE is carried in a fixed mode, and carries the P-TMSI information in the RRC initial direct transmission message, and also carries the P-TMSI information in the NAS message. In some cases, the information carried is redundant, resulting in wasted resources.
  • the two entities of the SGSN and the MME may be integrated, so that the UE needs to ensure that the UE accesses an MME through an EUTRAN (Enhanced Universal Terrestrial Radio Access Network) in a pool. If the 2G/3G access is still through this pool, then the SGSN and MME must be selected to this one, and the prior art cannot achieve this.
  • EUTRAN Enhanced Universal Terrestrial Radio Access Network
  • the information provided by the UE for the CN node selection and the information identifying the UE are carried in a fixed mode, and carry the P-TMSI information in the RRC initial direct transmission message, and also carry the P- in the NAS message. TMSI information. In some cases, the information carried is redundant, resulting in wasted resources.
  • the two entities of the SGSN and the MME may be integrated, so that the UE needs to ensure that the UE accesses an MME through an EUTRAN (Enhanced Universal Terrestrial Radio Access Network) in a pool. If the 2G/3G access is still through this pool, then the SGSN and MME must be selected to this one, and the prior art cannot achieve this.
  • EUTRAN Enhanced Universal Terrestrial Radio Access Network
  • the inventors found that the following problems exist in the prior art network (including 2G/3G, LTE):
  • the UE provides the access network node with the core network node.
  • the selected information is NRI. If the UE replaces the pool, and the new pool has the same configured NRI SGSN, then the RAN node will select the SGSN with the same NRI, and the SGSN is not necessarily load balanced, so The purpose of load balancing cannot be achieved.
  • the UE may send a message carrying the optimal UE identification information to the core network, where the UE identification information is used for core network node selection and its own device.
  • the identity of the RAN node ensures that the RAN node can correctly select the CN node when it needs to reselect the CN node, and the CN node can correctly identify the UE.
  • network resources can be saved and the complexity of the message can be reduced; and the pool can be successfully selected in the pool.
  • An embodiment of the present invention further provides a user equipment, as shown in FIG. 5, configured to acquire a configuration of a current network, and according to different situations, determine to carry different identification information and send the information to the network side, and use the network side RAN node to the CN.
  • the user equipment includes:
  • the information determining unit 510 is configured to determine user terminal identification information according to a configuration situation of the network side, where the user terminal identification information includes core node CN node selection information and user terminal self identification information;
  • the identifier information sending unit 520 is configured to send user terminal identification information to the network side, where the user terminal identifier information is used by the network side to select a CN node and identify the user terminal.
  • the user equipment further includes:
  • the network status obtaining unit 530 is configured to acquire a configuration on the network side.
  • the configuration further includes: whether the system broadcast information of the network side includes the ID information of the pool (the Pool-id may be a Group Id or the MCC + MNC + Group Id), and whether the network side is coordinated with the unique CN node code. Whether the information, the network is overlapping, whether it is a shared network, etc.
  • the UE may send a message carrying the optimal UE identification information to the network, where the UE identification information is used for core network node selection and identification of the UE's own device.
  • the RAN node is guaranteed to correctly select the CN node when the CN node needs to be reselected, and the CN node can correctly identify the UE.
  • the present invention can be implemented by hardware, or can be implemented by means of software plus necessary general hardware platform, and the technical solution of the present invention. It can be embodied in the form of a software product that can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc.) that performs the methods described in various embodiments of the present invention.
  • a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a computer device may It is a personal computer, a server, or a network device, etc.

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Description

用户终端标识信息的发送方法和设备 本申请要求于 2008年 1月 24日提交中国专利局, 申请号为 200810004273.8,发明名称为 "用户终端标识信息的发送方法和设备" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及通信技术领域,尤其涉及一种用户终端标识信 息的发送方法和设备。 背景技术
现有技术的 2G/3G网络, 通过 MCC ( Mobile Country Code, 移 动用户的国家代码) + MNC ( Mobile Network Code, 移动用户的所 属 PLMN网代码 ) + LAC ( Location Area Code, 位置区码) + RAC ( Routing Area Code, 路由区代码) + P-TMSI ( Packet Temporary Mobile Subscriber Identity , 分组临时移动用户身份)唯一的标识一个 UE ( User Equipment, 用户终端)。其中 MCC + MNC是 PLMN ( Pulic Land Mobile Network, 陆上公用移动通信网 ) 的标识; LAC + RAC 可以确定一个 PLMN 内的 POOL (资源池); P-TMSI可以确定一个 POOL 内的唯一核心网实体和 UE; 通常, 把 MCC + MNC + LAC + RAC称为 RAI ( Routing Area Identification, 路由区标识)信息。 UE 第一次接入网络时, SGSN( Serving GPRS Supporting Node,服务 GPRS 支持节点)给 UE分配一个分组临时移动用户标识( P-TMSI )用于临 时标识注册在这个区域的 UE, 其中包含 NRI ( Network Resource Indication, 网络资源标识 )信息, 用于标识 POOL内的一个 SGSN。 UE下次重新接入网络时, 将老的 SGSN分配的 P-TMSI和 RAI信息 通知给新的 SGSN,用于新的 SGSN解析出正确的老的 SGSN的地址 来请求对应的上下文。
现有技术的 LTE ( Long Term Evolution, 长期演进) 网络内, 通 过 GUTI ( Globally Unique Temporary Indication, 全球唯一临时标识) =MCC + MNC + MME ( Mobile Management Entity, 移动管理实体) Group ID + MME code + M-TMSI ( MME Temporary Mobile Subscriber Identity, 移动管理实体临时移动用户身份)唯一的标识一个 UE。 其 中 M-TMSI由 MME分配, 在 MME内唯一。 MME Group ID + MME code组成 MME identified MMEI )唯一的确定一个 PLMN内的 MME。 MCC + MNC + MMEI组成 GUMMEK Globally Unique MME Identifier, 全球唯一的 MME ID, 即核心网节点 MME的标识 )来唯一的确定一 个 MME。 UE接入网络时, 需要将老的 MME分配的 MCC + MNC + MME Group ID + MME code + M-TMSI通知给新的 MME, 用于新的 在 UE接入到网络时, UE需要将用于接入网节点在 Pool内选择 核心网节点( NAS ( Non Access Stratum, 非接入层 )节点选择 )的信 息发送给接入网节点。在 UMTS ( Universal Mobile Telecommunication System, 通用无线通信系统) 中, 这个信息是 NRI, 其是 P-TMSI的 一部分。 而在 LTE内, 这个选择信息可以是 MME code。
现有技术中, 在 2G/3G内, UE在 RRC ( Radio Resource Control, 无线资源控制 ) 初始直传消息 (UE 发送给 RAN ( Radio Access Network,无线接入网)节点的消息)中携带 P-TMSI信息用于 CN(Core Net, 核心网络)节点选择, 而在 NAS消息中 ( UE发送给 CN节点) 携带 P-TMSI和 RAI用于 CN节点标识 UE, 其中, NAS消息对 RAN 节点是透明的, RAN节点不解析 NAS消息, 只进行透传。 UE接入 2G/3G网络时, 如果网络之前给 UE分配了 P-TMSI, 那么 UE将此 P-TMSI信息发送给 RAN节点, RAN节点根据 P-TMSI选择到正确 的 CN节点。 如果 UE中没有 P-TMSI的信息, UE将提供 IMSI进行 接入, 此时接入网节点根据负载均衡等原则选择合适的 CN节点。
发明人在实现本发明实施例的过程中,发现: UE接入到网络时, UE 需要将用于接入网节点在 Pool 内选择核心网节点 (NAS ( Non Access Stratum, 非接入层) 节点选择) 的信息发送给接入网节点。 通常情况下 UE会直接机械地向接入网发送信息, 这样会造成信息冗 余。 发明内容
为解决上述问题,本发明实施例提供一种用户终端标识信息的发 送方法和设备, 使得在需要重新选择 CN节点时, RAN节点能够正 确地选择 CN节点。
为达到上述目的, 本发明实施例提供一种标识信息的发送方法, 包括以下步骤:
根据网络侧的配置情况, 确定用户终端标识信息, 所述用户终端 标识信息包括核心网 CN节点选择信息和用户终端自身标识信息; 向所述网络侧发送所述用户终端标识信息,所述用户终端标识信 息用于所述网络侧选择 CN节点并标识所述用户终端。
本发明的实施例还提供一种用户设备, 包括:
信息确定单元, 用于根据网络侧的配置情况, 确定用户终端标识 信息, 所述用户终端标识信息包括核心网 CN节点选择信息和用户终 端自身标识信息;
标识信息发送单元,用于向所述网络侧发送所述用户终端标识信 息,所述用户终端标识信息用于所述网络侧选择 CN节点并标识所述 用户终端。
本发明的实施例还提供一种标识信息的发送方法, 网络中的 RAN节点在发送包含小区所在 pool的标识信息的广播信息。
与现有技术相比, 本发明的实施例具有以下优点:
通过使用本发明提供的实施例, 在不同的网络情况下, UE都可 以向核心网发送携带最优的 UE标识信息的消息, 该 UE标识信息用 于核心网节点选择和自身设备的标识, 保证核心网的 RAN节点能够 在需要重新选择 CN节点时正确地选择 CN节点、 以及 CN节点可以 正确地标识 UE。 通过对需要携带的 UE标识信息的优化, 可以节省 网络资源并降低消息的复杂度并且在 pool 内能够成功选择到合一的 SGSN和 MME实体上。 UE在向网络侧发送信息前, 先对信息进行 选择和确定, 以携带最优的信息, 使得在需要重新选择 CN节点时, RAN节点能够正确地选择 CN节点, 降低携带信息冗余。 附图说明
图 1是本发明实施例用户终端标识信息的发送方法实施例; 图 2是本发明实施例一中广播信息中存在 Pool-ID信息情况下 UE在 LTE内 TAU的流程图;
图 3是本发明实施例二中在广播信息中没有 Pool-ID信息情况下 UE在 LTE内 TAU的流程图;
图 4是本发明实施例三中广播信息中存在 Pool-ID信息情况下 UE在 LTE内 TAU的流程图。
图 5是本发明实施例的一种用户设备结构示意图。 具体实施方式
本发明的实施例中, UE获取当前网络的配置, 并根据不同的情 况判定携带不同的标识信息向网络侧发送, 用于 RAN节点对 CN节 点的选择以及 CN节点对自身进行的标识。 以下描述中, 以网络中的 RAN节点为 eNodeB、 CN节点为 MME为例。
本发明一种实施例, 如图 1所示, 一种用户终端标识信息的发送 方法, 包括以下步骤:
步骤 slOl , 根据网络侧的配置情况, 确定用户终端标识信息, 用 户终端标识信息包括核心网 CN节点选择信息和用户终端自身标识信 息;
步骤 sl02, 向网络侧发送用户终端标识信息,用户终端标识信息 用于网络侧选择 CN节点并标识用户终端。
通过使用本发明提供的实施例, 在不同的网络情况下, UE都可 以向核心网发送携带最优的 UE标识信息的消息, 该 UE标识信息用 于核心网节点选择和自身设备的标识, 保证核心网的 RAN节点能够 在需要重新选择 CN节点时正确地选择 CN节点、 以及 CN节点可以 正确地标识 UE。 UE在向网络侧发送信息前,先对信息进行选择和确 定, 以携带最优的信息, 使得在需要重新选择 CN节点时, RAN节 点能够正确地选择 CN节点, 降低携带信息冗余。
本发明的实施例一中,网络侧通过系统广播消息中广播当前小区 所属的 Pool-id, UE 可以通过该系统广播消息获取当前小区所属的 Pool-id , 该 Pool-id可以是 MME Group Id, 也可以是 MCC + MNC + MME Group Id。该情况下, LTE内 UE通过 TAU( Tracking Area Update, 跟踪区更新)进行用户终端标识信息的提示流程如图 2所示, 具体包 括如下步骤:
步骤 s201、 UE向 eNodeB发送 TAU Request消息, 并在该消息 中携带 CN节点的选择信息以及自身的标识信息。根据不同的网络情 况, UE在 TAU Request消息中携带的标识信息不同, 具体的携带方 法如下:
( 1 )当系统协调配置唯一的 MME Code时(例如在 overlapping, 包括网络共享的情况下, 协调配置唯一的 MME Code时), UE决定 执行 TAU:
若 UE判定不需要改变 PLMN和接入的 Pool,则在给 eNodeB发 送的 TAU request消息中包含的用于 CN节点选择的信息至少是 MME code, CN节点获取的用于标识 UE的信息至少是 M-TMSI;
若 UE判定接入的 Pool发生变化或者 PLMN发生变化,此时 UE 进入新的 Pool,给 eNodeB发送的 TAU request消息中包含的用于 CN 节点选择的信息可以是: 指示 eNodeB选择新的 MME的指示或者原 因值, 或者, 老的 Pool的信息, 该老的 Pool的信息用于通知 RAN 节点由 RAN节点判定选择新的 CN节点, 此时 CN节点获取的用于 标识 UE的信息至少是 MME code + M-TMSL
( 2 ) 当系统不协调配置唯一的 MME Code 时 (例如在 overlapping, 包括网络共享的情况下, 不协调配置唯一的 MME Code 时), UE决定执行 TAU:
若 UE接入的 PLMN或者 pool发生变化,则在给 eNodeB发送的 TAU request 消息中包含的用于 CN 节点选择的信息可以是: 指示 eNodeB选择新的 MME的指示或者原因值,或者,老的 Pool的信息, 该信息用于通知 RAN节点由 RAN节点判定选择新的 CN节点,但是 此时 CN节点需要获取的标识 UE的信息会有区别, 以下进一步结合 不同的情况对 CN节点需要获取的信息进行说明。
( 2. 1 ) 非网络共享、 非 overlapping情况, 只广播一个 PLMN 和 MME Group ID时:
若 UE判定不需要改变 PLMN和接入的 Pool时,则在给 eNodeB 发送的 TAU request 消息中包含的用于 CN节点选择的信息至少是 MME code, CN节点获取的用于标识 UE的信息至少是 M-TMSI; 若 UE判定需要 PLMN不发生变化, 但需要改变接入的 Pool , 则用于 CN节点选择的信息可以是: 指示 eNodeB选择新的 MME的 指示或者原因值, 或者, 老的 Pool的信息, 该信息用于通知 RAN节 点判定选择新的 CN节点; 此时 CN节点获取的用于标识 UE的信息 至少是 MME Group ID + MME code + M-TMSI;
若 UE判定需要改变接入的 PLMN, 则用于 CN节点选择的信息 可以是: 指示 eNodeB选择新的 MME的指示或者原因值, 或者, 将 老的 Pool的信息,该信息用于通知 RAN节点判定选择新的 CN节点; 此时 CN节点获取的用于标识 UE的信息至少是 MCC + MNC + MME Group ID + MME code + M-TMSI;
( 2.2 )非网络共享、 广播多个 MME Group ID情况下: 如果 PLMN没有发生变化并且 UE需要更换接入的 Pool, 则用 于 CN节点选择的信息可以是: 指示 eNodeB选择新的 MME的指示 或者原因值, 或者, 老的 Pool的信息, 该信息用于通知 RAN节点由 RAN节点判定选择新的 CN节点; 此时 CN节点获取的用于标识 UE 的信息至少是 MME Group ID + MME code + M-TMSI; 如果 PLMN发生变化,则用于 CN节点选择的信息可以是: 指示 eNodeB选择新的 MME的指示或者原因值,或者,老的 Pool的信息, 该信息用于通知 RAN节点由 RAN节点判定选择新的 CN节点;此时 CN 节点获取的用于标识 UE 的信息至少是 MCC + MNC + MME Group ID + MME code + M-TMSI;
假如 PLMN和接入的 Pool都没有发生变化, 则在给 eNodeB发 送的 TAU request消息中包含的用于 CN节点选择的信息至少是 MME Group ID + MME code, CN节点获取的用于标识 UE的信息至少是 M-TMSL
( 2.3 ) 网络共享的情况下:
UE判定 PLMN和 pool都不发生变化的情况下,给 eNodeB发送 的 TAU request消息中包含的用于 CN节点选择的信息至少是 MCC + MNC + MME Group ID + MME code, CN节点获取的用于标识 UE的 信息至少是 M-TMSI;
其他情况下, 则用于 CN节点选择的信息可以是: 指示 eNodeB 选择新的 MME的指示或者原因值, 或者, 老的 Pool的信息, 用于 通知 RAN节点由 RAN节点判定选择新的 CN节点; CN节点获取的 用于标识 UE 的信息至少是 MCC + MNC + MME Group ID + MME code + M-TMSI。 网络共享的情况下,假如不同 PLMN的 pool配置有 相同的 MME Group ID , 则可以不携带 MME Group ID。
步骤 s202、 eNodeB将 TAU请求消息发送至选择的 MME, MME 需要获取的 UE标识信息如上所示。
步骤 s203、 假如 MME发生变化, MME根据 UE上报的信息解 析出老的 MME的地址, 并与老的 MME请求上下文。
步骤 s204、 在得到上下文信息后, 新的 MME判定是否需要与 UE进行鉴权, 如果需要则执行安全功能, 该步骤为可选。
步骤 s205、如果 S-GW也发生变化,新的 MME创建到新的 S-GW 的承载并且更新到 P-GW的承载。
步骤 s206、 新的 MME发起到 HSS的位置更新, 其中 HSS要发 起到老的 MME的位置删除。
步骤 s207、 新的 MME判定可以接受 UE的跟踪区更新请求, 发 送 TAU接受消息给 UE。
步骤 s208、 如果 UE收到 MME分配的新的 GUTI信息, 则给 MME返回 TAU完成消息以确认已经成功收到新分配的 S-TMSL 以上的描述中, 以 TAU Request流程为例进行说明。 在 UE接入 网络的其他流程中, 例如 Attach附着、 Service Request业务请求等流 程中, UE判定和携带信息机制和以上类似, 不再赘述。
另外, 对于 RAN节点进行 CN节点选择所需的信息, 可以携带 在 RRC ( Radio Resource Control, 无线资源控制 ) 消息中, 而将 CN 节点需要获取的 UE的标识信息携带在 NAS消息中, 将该 NAS消息 作为 RRC消息的一部分通过 RRC消息同时发送到 RAN节点, RAN 节点根据 RRC消息中的内容进行 CN节点选择后,将 RRC消息中携 带的 NAS消息内容转发给 CN节点。 也可以是这两个信息都在 NAS 消息中, 而 RAN节点可以读 NAS消息; 也可以 UE给 RAN节点发 送的用于 CN节点选择的信息在 RRC消息中, 对应的如果 CN节点 也需要这部分信息, 则可以不在 NAS消息中携带, 而 RAN节点读到 这部分信息后再转发给 CN节点; 还可以是 UE将所述 RAN节点选 择 CN节点所需的信息、 以及所述 CN节点对用户终端进行标识所需 的信息都添加在 RRC消息中向 RAN节点发送, RAN节点将所述对 用户终端进行标识所需的信息转发给所述 CN节点。在以上这些情况 下, 只是携带 UE提供信息的承载消息发生变化, 而 UE的判定机制 并未发生变化, 不再赘述。
本发明的实施例二中, 网络侧没有广播当前小区所属的 Pool-id, UE无法获取当前小区所属的 Pool-id。 该情况下, LTE内的 UE通过 TAU进行用户终端标识信息的提示的流程如图 3所示, 具体包括以 下步骤:
步骤 s301、 UE向 eNodeB发送 TAU Request消息, 并在该消息 中携带 CN节点的选择信息以及自身的标识信息。根据不同的网络情 况, UE在 TAU Request消息中携带的标识信息不同, 具体的携带方 法如下:
( 1 ) 当协调配置唯一的 MME Code时(例如在 overlapping, 包 括在网络共享的情况下, 协调配置唯一的 MME Code时), UE决定 执行 TAU:
在向 eNodeB发送的 TAU request消息中包含的用于 CN节点选 择的信息至少是 MME code, CN节点获取的用于标识 UE的信息至 少是 MME code + M-TMSI;假如 UE接入的 PLMN发生变化, UE还 需要将选择的 PLMN信息通知给 RAN节点。
( 2 )当系统不协调配置唯一的 MME Code (例如在 overlapping, 包括在网络共享的情况下不协调配置唯一的 MME Code ) 时:
假如 UE接入的 PLMN发生变化, 则在给 eNodeB发送的 TAU request消息中包含的用于 CN节点选择的信息可以是: 指示 eNodeB 选择新的 MME指示或者原因值, 或者, 老的 Pool的信息, 用于通 知 RAN节点由 RAN节点判定选择新的 CN节点,但是此时 CN节点 需要获取的信息会有区别。
( 2.1 )在非网络共享的情况下:
若 UE接入的 PLMN没有发生变化, 在给 eNodeB发送的 TAU request消息中包含的用于 CN节点选择的信息至少是 MME Group ID + MME code, CN节点获取的用于标识 UE的信息至少是 MME Group ID + MME code + M-TMSI;
若 PLMN发生变化, 则用于 CN节点选择的信息可以是: 指示 eNodeB选择新的 MME的指示或者原因值,或者,老的 Pool的信息, 用于通知 RAN节点由 RAN节点判定选择新的 CN节点; CN节点获 取的用于标识 UE 的信息至少是 MCC + MNC + MME Group ID + MME code + M-TMSI。
( 2.2 )在网络共享的情况下:
若 UE接入的 PLMN没有发生变化, 在向 eNodeB发送的 TAU request消息中包含的用于 CN节点选择的信息至少是 MCC + MNC + MME Group ID + MME code, CN节点获取的用于标识 UE的信息至 少是 MME Group ID + MME code + M-TMSI;
若 UE接入的 PLMN发生变化, CN节点获取的用于标识 UE的 信息至少是 MCC + MNC + MME Group ID + MME code + M-TMSI。 在网络共享的情况下, 假如不同 PLMN配置相同的 MME Group ID , 则可以不携带 MME Group ID。
步骤 s302、 eNodeB将 TAU请求消息发送至选择的 MME, MME 需要获取的 UE标识信息如上所示。
步骤 s303、 假如 MME发生变化, MME根据 UE上报的信息解 析出老的 MME的地址, 并与老的 MME请求上下文。
步骤 s304、 在得到上下文信息后, 新的 MME判定是否需要与 UE进行鉴权, 如果需要则执行安全功能, 该步骤为可选。
步骤 s305、如果 S-GW也发生变化,新的 MME创建到新的 S-GW 的承载并且更新到 P-GW的承载。
步骤 s306、 新的 MME发起到 HSS的位置更新, 其中 HSS要发 起到老的 MME的位置删除。
步骤 s307、 新的 MME判定可以接受 UE的跟踪区更新请求, 发 送 TAU接受消息给 UE。
步骤 s308、 如果 UE收到 MME分配的新的 GUTI信息, 则给 MME返回 TAU完成消息以确认已经成功收到新分配的 S-TMSL 以上的描述中, 以 TAU Request流程为例进行说明。 在 UE接入 网络的其他流程中, 例如 Attach, Service Request等流程中, UE判 定和携带信息机制和以上类似, 不再赘述。
另外, 对于 RAN节点进行 CN节点选择所需的信息, 可以携带 在 RRC消息( Radio Resource Control, 无线资源控制 )消息中, 而将 CN节点需要获取的 UE的标识信息携带在 NAS消息中, 将该 NAS 消息作为 RRC消息的一部分通过 RRC消息同时发送到 RAN节点, RAN节点根据 RRC消息中的内容进行 CN节点选择后, 将 RRC消 息中携带的 NAS消息内容转发给 CN节点。 也可以是这两个信息都 在 NAS消息中, 而 RAN节点可以读 NAS消息; 也可以 UE给 RAN 节点发送的用于 CN节点选择的信息在 RRC消息中,对应的如果 CN 节点也需要这部分信息, 则可以不在 NAS消息中携带, 而 RAN节点 读到这部分信息后再转发给 CN节点; 还可以是 UE将所述 RAN节 点选择 CN节点所需的信息、 以及所述 CN节点对用户终端进行标识 所需的信息都添加在 RRC消息中向 RAN节点发送, RAN节点将所 述对用户终端进行标识所需的信息转发给所述 CN节点在以上这些情 况下, 只是携带 UE提供信息的承载消息发生变化, 而 UE的判定机 制并未发生变化, 不再赘述。 对于实施例一和二: 假如 UE只有一个 临时标识信息, 那么 1^将 ^据此唯一的临时标识信息用于 CN节点 选择和标识自己; 假如 UE有两个临时标识信息, 那么 UE将根据本 系统的临时标识信息用于 CN节点选择, 而将两个临时标识信息都提 供给网络。
本发明的实施例三中, 网络侧广播当前小区所属的 Pool-id, UE 获取当前小区所属的 Pool-id并进行判定: 当 UE接入 LTE, 发现广 播的 Group id与自己的 GUTI中的 Group id一致,那么 UE将提供 LTE 侧的标识信息来进行 RAN节点选择, 可以是 GUTI或者 GUMMEI 或者 MME code;当 UE接入 LTE,发现广播的 Group id与自己的 GUTI 中的 Group id不一致, 那么 UE将提供 2G/3G侧的标识信息来进行 RAN节点选择,可以是 P-TMSI或者 NRI。该情况下, UE通过 2G/3G 接入一个新的 Pool的合一的 SGSN/MME后又接入此 pool的 LTE, 此时 LTE内的 UE通过 TAU进行用户终端标识信息的提示的流程如 图 4所示, 具体包括以下步骤:
步骤 s401 - s402、 UE发送 TAU Request消息给网络, UE发现 LTE广播的 Pool id与自己存储的不一致,判定 UE进入一个新的 pool, 此时 UE携带另一个系统的标识信息来进行 CN节点选择, UE将 P - TMSI或者 NRI信息通知给 eNodeB, eNodeB根据此信息选择合一 的 SGSN/MME。
步骤 s403、 此时 MME发生变化, MME根据 UE上 的信息解 析出老的 MME的地址, 并与老的 MME请求上下文。
步骤 S404、 在得到上下文信息后, 新的 MME判定是否需要与 UE进行鉴权, 如果需要则执行安全功能, 该步骤为可选。
步骤 s405、 如果 S-GW也发生变化, 合一的 MME创建到新的 S-GW的承载并且更新到 P-GW的承载。
步骤 s406、 合一的 MME发起到 HSS的位置更新, 其中 HSS要 发起到老的 MME的位置删除。
步骤 s407、 合一的 MME判定可以接受 UE的跟踪区更新请求, 发送 TAU接受消息给 UE。
步骤 s408、 如果 UE收到 MME分配的新的 GUTI信息, 则给 MME返回 TAU完成消息以确认已经成功收到新分配的 S-TMSL 以上的描述中, 以 TAU Request流程为例进行说明。 在 UE接入 网络的其他流程中, 例如 Attach等流程中, UE判定和携带信息机制 和以上类似, 不再赘述。 实施例三中, 假如 UE只有一个临时标识信 息, 那么 UE将 ^据此唯一的临时标识信息用于 CN节点选择和标识 自己; 假如 UE有两个临时标识信息, 那么 UE将根据以上的判定机 制用于 CN节点选择, 而将两个临时标识信息都提供给网络。
本发明的实施例还提供一种标识信息的发送方法,网络中的无线 接入网络 RAN节点发送包含小区所在 pool的标识信息的广播信息。 在 EUTRAN 网络中, 所述小区所在 pool 的标识信息具体为组标识 Group id。 具体的, 当 UE接入 EUTRAN, 发现广播的 Group id与自 己的全球唯一临时标识 GUTI中的 Group id一致, 则所述 UE提供 EUTRAN侧的标识信息用于 CN节点选择, 所述标识信息至少包含 MME Code信息, 所述 MME Code信息具体为 GUTI、 GUMMEL MMEI或 MME Code中的一种; 当 UE接入 EUTRAN, 发现广播的 Group id与自己的 GUTI中的 Group id不一致,则所述 UE提供 2G/3G 侧的标识信息用于 CN节点选择, 所述标识信息至少包含 NRI信息, 所述 NRI信息为 P-TMSI或者 NRI。
由于现有技术中, 目前 UE提供的用于 CN节点选择的信息和标 识 UE的信息, 都是按照固定的模式携带, 并且在 RRC初始直传消 息中携带 P-TMSI信息, 而在 NAS消息中也携带 P-TMSI信息。在某 些情况下, 这些携带的信息是冗余的, 造成资源的浪费。 另外在演进 网络中, 可能 SGSN和 MME两个实体合一, 这样就需要保证 UE在 一个 pool 内通过 EUTRAN ( Enhanced Universal Terrestrial Radio Access Network, 增强通用陆地无线接入网 )接入选择一个 MME后, 如果还是通过这个 pool 的 2G/3G接入, 则必须选择到这个合一的 SGSN和 MME, 而现有技术无法实现这一点。
另外, 目前 UE提供的用于 CN节点选择的信息和标识 UE的信 息, 都是按照固定的模式携带, 并且在 RRC 初始直传消息中携带 P-TMSI信息,而在 NAS消息中也携带 P-TMSI信息。在某些情况下, 这些携带的信息是冗余的, 造成资源的浪费。 另外在演进网络中, 可 能 SGSN和 MME两个实体合一, 这样就需要保证 UE在一个 pool 内通过 EUTRAN ( Enhanced Universal Terrestrial Radio Access Network, 增强通用陆地无线接入网)接入选择一个 MME后, 如果 还是通过这个 pool的 2G/3G接入, 则必须选择到这个合一的 SGSN 和 MME , 而现有技术无法实现这一点。
发明人在实现本发明实施例的过程中, 发现现有技术的网络中 (包含 2G/3G、 LTE ) 中存在如下问题: 比如在 UMTS中, UE给接 入网节点提供的用于核心网节点选择的信息是 NRI, 假如说 UE更换 了 pool, 而新的 pool如果有相同配置的 NRI的 SGSN, 那么该 RAN 节点将选择这个具有相同 NRI的 SGSN,而该 SGSN不一定是负载均 衡的, 所以不能达到负载均衡的目的。
相应的, 通过使用本发明实施例提供的方法, 在不同的网络情况 下, UE都可以向核心网发送携带最优的 UE标识信息的消息, 该 UE 标识信息用于核心网节点选择和自身设备的标识, 保证 RAN节点能 够在需要重新选择 CN节点时正确地选择 CN节点、 以及 CN节点可 以正确地标识 UE。 通过对需要携带的 UE标识信息的优化, 可以节 省网络资源并降低消息的复杂度; 并且在 pool 内能够成功选择到合 一的 SGSN和 MME实体上。
本发明的实施例还提供一种用户设备, 如图 5所示, 用于获取当 前网络的配置,并根据不同的情况判定携带不同的标识信息向网络侧 发送, 用于网络侧 RAN节点对 CN节点的选择以及 CN节点对自身 进行的标识。 具体的, 该用户设备包括:
信息确定单元 510, 用于根据网络侧的配置情况, 确定用户终端 标识信息, 用户终端标识信息包括核心网 CN节点选择信息和用户终 端自身标识信息;
标识信息发送单元 520, 用于向网络侧发送用户终端标识信息, 用户终端标识信息用于网络侧选择 CN节点并标识用户终端。
该用户设备进一步包括:
网络状况获取单元 530, 用于获取网络侧的配置。 该配置进一步 包括: 网络侧的系统广播信息中是否包括 Pool的 ID信息(该 Pool-id 可以是 Group Id, 也可以是 MCC + MNC + Group Id )、 网络侧是否协 调配置了唯一的 CN节点 Code信息、 网络是否为 overlapping, 是否 为共享网络等。
通过使用本发明实施例提供的上述设备, 在不同的网络情况下, UE都可以向网络发送携带最优的 UE标识信息的消息, 该 UE标识 信息用于核心网节点选择和 UE 自身设备的标识, 保证 RAN节点能 够在需要重新选择 CN节点时正确地选择 CN节点、 以及 CN节点可 以正确地标识 UE。 通过对需要携带的 UE标识信息的优化, 可以节 省网络资源并降低消息的复杂度。
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 到本发明可以通过硬件实现,也可以可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 本发明各个实施例所述的方法。 总之, 以上所述仅为本发明的较佳实施例而已, 并非用于限定本 发明的保护范围。 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求
1、 一种用户终端标识信息的发送方法, 其特征在于, 包括以下 步骤:
根据网络侧的配置情况, 确定用户终端标识信息, 所述用户终端 标识信息包括核心网 CN节点选择信息和用户终端自身标识信息; 向所述网络侧发送所述用户终端标识信息,所述用户终端标识信 息用于所述网络侧选择 CN节点并标识所述用户终端。
2、 如权利要求 1所述用户终端标识信息的发送方法, 其特征在 于, 所述 CN节点选择信息为移动管理实体码 MME Code, 所述用户 终端自身标识信息为移动管理实体临时移动用户身份 M-TMSL
3、 如权利要求 2所述用户终端标识信息的发送方法, 其特征在 于, 根据网络侧的配置情况, 确定用户终端标识信息, 之前还包括: 用户终端获取所述网络侧的配置, 具体为:
接收网络侧的系统广播信息,从所述系统广播信息中获取网络侧 的配置; 或
根据默认配置获取网络侧的配置。
4、 如权利要求 3所述用户终端标识信息的发送方法, 其特征在 于,
当所述网络侧的系统广播信息中包括资源池 Pool的标识 ID信 息, 判定接入的 Pool发生变化时, 所述用户终端标识信息还包括群 组标识码 Group ID。
5、 如权利要求 3所述用户终端标识信息的发送方法, 其特征在 于,
当所述网络为共享网络时,所述用户终端标识信息还包括移动用 户的国家代码 MCC、 移动用户的所属陆上公用移动通信网代码 MNC、 Group ID。
6、 如权利要求 3所述用户终端标识信息的发送方法, 其特征在 于, 当陆上公用移动通信网 PLMN配置相同的 Group ID时, 所述用 户终端标识信息则不需要包括所述 Group ID信息。
7、 如权利要求 1至 6中任一项所述用户终端标识信息的发送方 法, 其特征在于, 所述网络侧的配置为以下之一或其任意组合:
网络侧的系统广播信息中包括资源池 Pool的标识 ID信息; 网络侧协调配置了唯一的核心网 CN节点代码 Code信息; 网给为重叠 overlapping网给;
网络为网络共享。
8、 如权利要求 1至 6中任一项所述用户终端标识信息的发送方 法,其特征在于,向所述网络侧发送所述用户终端标识信息,具体为: 将所述 CN 节点选择信息添加在无线资源控制 RRC 消息中向 RAN节点发送, 将用于 CN节点对用户终端进行标识所需的所述用 户终端自身标识信息添加在非接入层 NAS消息中向 CN节点发送; 或
将用户终端标识信息添加在 NAS消息中向 RAN节点和 CN节点 发送; 或
将用户终端标识信息添加在 RRC消息中向 RAN节点发送, RAN 节点将所述用户终端自身标识信息转发给所述 CN节点; 或
将所述 CN节点选择信息添加在 RRC消息中, 如果 CN节点也 需要所述信息,则 RAN节点获取到所述信息后直接将 RRC消息中所 述 CN节点选择信息向 CN节点转发。
9、 如权利要求 1至 6中任一项所述用户终端标识信息的发送方 法, 其特征在于,
UE提供 2G/3G系统的标识信息时, 所述 CN节点 Code信息为 网络资源标识 NRI, 所述 CN节点给 UE分配的临时标识信息为分组 临时移动用户身份 P-TMSI;
所述 Pool的 ID信息还可以为 MCC、 MNC和 Group ID。
10、如权利要求 1至 6中任一项所述用户终端标识信息的发送方 法, 其特征在于, UE只有一个临时标识信息时, 根据所述唯一的临时标识信息用 于 CN节点选择以及对自身的标识;
UE具有两个临时标识信息时, 根据本系统的临时标识信息用于 CN节点选择, 将两个临时标识信息都提供给网络。
11、 一种用户设备, 其特征在于, 包括:
信息确定单元, 用于根据网络侧的配置情况, 确定用户终端标识 信息, 所述用户终端标识信息包括核心网 CN节点选择信息和用户终 端自身标识信息;
标识信息发送单元,用于向所述网络侧发送所述用户终端标识信 息, 所述用户终端标识信息用于所述网络侧选择 CN节点并标识所述 用户终端。
12、 如权利要求 11所述的用户设备, 其特征在于, 还包括: 网络状况获取单元, 用于获取网络侧的配置。
13、 一种标识信息的发送方法, 其特征在于, 网络中的无线接入 网络 RAN节点发送包含小区所在 pool的标识信息的广播信息。
14、 如权利要求 13所述标识信息的发送方法, 其特征在于, 增 强通用陆地无线接入网 EUTRAN网络中, 所述小区所在 pool的标识 信息具体为组标识 Group id。
15、 如权利要求 14所述标识信息的发送方法, 其特征在于, 当 UE接入 EUTRAN,发现广播的 Group id与自己的全球唯一临时标识 GUTI中的 Group ID—致, 则所述 UE提供 EUTRAN侧的标识信息 用于 CN节点选择, 所述标识信息至少包含 MME Code信息, 所述 MME Code信息具体为 GUTI、 GUMMEL MMEI或 MME Code中的 一种; 当 UE接入 EUTRAN, 发现广播的 Group ID与自己的 GUTI 中的 Group ID不一致,则所述 UE提供 2G/3G侧的标识信息用于 CN 节点选择,所述标识信息至少包含 NRI信息,所述 NRI信息为 P-TMSI 或者 NRI。
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Publication number Priority date Publication date Assignee Title
CN107534929A (zh) * 2015-09-18 2018-01-02 华为技术有限公司 核心网选择方法、装置及系统
CN107534929B (zh) * 2015-09-18 2024-03-01 华为技术有限公司 核心网选择方法、装置及系统
US11930448B2 (en) 2015-09-18 2024-03-12 Huawei Technologies Co., Ltd. Core network selection method, apparatus, and system

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