WO2010121457A1

WO2010121457A1 - List updating method, mobility management unit, user equipment and home nodeb

Info

Publication number: WO2010121457A1
Application number: PCT/CN2009/073654
Authority: WO
Inventors: 梁爽; 王静; 王笛; 霍玉臻; 宗在峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-04-23
Filing date: 2009-09-01
Publication date: 2010-10-28
Also published as: CN101730066A; CN101730066B

Abstract

A list updating method, a mobility management unit, user equipment (UE) and a home nodeB (HNB) are disclosed by the present invention. The aforementioned list updating method is used for updating allowable closed subscriber group (CSG) identity (ID) list of the UE in the connection status. Said UE accesses the HNB corresponding to the CSG as a temporary user of the CSG. The method includes: when it is determined that the UE's residence time at the HNB exceeds a predetermined threshold, the mobility management unit informing the UE of unavailability of the abovementioned CSG to make the UE delete the ID corresponding to the aforementioned CSG in the access allowable CSG ID list of said UE. By using the present invention, waste of radio resources caused by UE's wrong cell reselection, access report generation, invalid access attempt and so on could be avoided.

Description

List update method, mobile management unit,

User equipment and home ^^ station

The present invention relates to the field of mobile communications technologies, and in particular, to a list update method, a mobility management unit, a user equipment, and a home base station. BACKGROUND A home base station (Home NodeB, referred to as a ΗΝΒ) or an evolved home base station (Home eNodeB, called a HeNB) is a small, low-power base station deployed in indoor places such as homes and offices, and can provide users with Higher service rates and lower costs for using high-rate services, while also making up for the deficiencies of existing distributed cellular wireless communication systems. The home base station can be applied in a third generation (3rd Generation) or a Long Term Evolution (LTE) mobile communication network. In order to facilitate management of the home base station, a new network element, that is, a home base station gateway, is introduced in the radio access network. The main functions performed by the home base station gateway include: verifying the security of the home base station, processing the registration of the home base station, performing operation and maintenance management on the home base station, configuring and controlling the home base station according to the operator's requirements, and managing data of the core network and the home base station. 1 is a network diagram of a home base station network in a 3G mobile communication network. The 3G home base station is connected to the home base station gateway through a newly defined Iuh interface, and the home base station gateway provides IuPS and IuCs interfaces to the core network packet domain and the circuit domain. For a 3G network, the home base station gateway is mandatory to shield the impact on the terminal and the network side after the home base station is introduced. For the LTE network, the home base station gateway is optional. Therefore, the LTE home base station and the core network are connected in two ways. One is that the home base station and the core network element are directly connected, and the other is the home base station through the gateway and the core network. The elements are connected, as shown in Figures 2 and 3, respectively. In the scenario of the home base station gateway shown in FIG. 3, the home base station gateway may not integrate the user plane function. As shown in FIG. 4, the user plane is directly established between the home base station and the core network user plane gateway, so that the user plane is flattened. The data transmission delay is reduced. The Closed Subscriber Grou (CSG) is a concept introduced after the introduction of a home base station. Usually a family or a user inside an enterprise forms a closed user group. Each closed subscriber group is identified by a CSG ID (identification), and the home base station that is the user's monthly subscription within each closed subscriber group has the same CSG ID. The user can access the home base station corresponding to the multiple closed user groups by signing with the operator, wherein the identifier of the closed user group that allows the user to access is saved in the list of allowed closed user groups, and the identifier list is saved in the user equipment. (User Equipment, called UE) and the home user data server on the network side. The UE can use the CSG ID list to allow the UE to select the radio cell, and the home base station will notify the UE of the CSG ID and the usage mode to which the UE belongs, and if the UE finds that the home base station is closed after acquiring the broadcast message. The mode is used, and the CSG ID corresponding to the home base station is not in the list of allowed closed user group identifiers saved by the home base station, and the UE determines that the home base station cell is not suitable for access and automatically selects other cells suitable for access. Avoid frequent UE access attempts and reduce battery and air interface resource consumption. When the user performs initial access, the home subscriber data server on the network side transmits the list of allowed closed subscriber groups subscribed by the subscriber to the mobility management unit of the core network. The core network mobility management unit uses the list to perform access control on the UE. If the UE accesses the core network from a closed mode home base station that is not authorized by 4, the core network rejects access by such users. The home base station can also be used as a normal base station. At this time, the access mode of the home base station is (OPEN) open mode. In this mode, the home base station can be accessed by any user. For the user accessing from this mode, the mobility management entity does not need to access the access user. Similarly, the home base station can have a hybrid mode, adopt closed mode access for some users, and adopt a development mode for some users. For users who have authorized access to the home base station, they can be classified into temporary authorized access and permanent 4 authorized access according to the wishes of the home base station administrator. Users who temporarily grant access cannot access a certain CSG ID after a certain period of time. The home base station to which the identity belongs is identified, and even the user who is permanently authorized to access can immediately cancel the access right according to the wishes of the home base station manager. At present, the duration of the temporary user access is allowed as the subscription data of the user. When the UE accesses the network, the home data server sends the subscription data to the core network mobility management unit, and the core network mobility management unit saves the information. When the UE is in the connected state, if the duration of the home base station accessed by the temporary user has timed out, the core network mobility management unit removes the CSG identifier that has timed out from the user's allowed access CSG identification list (also referred to as a white table). Deleted. However, in the existing solution, the network side does not notify the UE of the operation performed by itself, and therefore, the operation will cause the UE and the network side to allow the access CSG identification list to be out of synchronization. Furthermore, on the one hand, the UE will not be able to operate using the latest allowed access CSG identification list, which may cause erroneous cell reselection, measurement report generation, invalid access attempt and waste of radio resources. on the other hand, The operation on the network side may cause the user to be handed over to a non-CSG cell. Since the policies such as charging between the home base station and the ordinary base station may be different, the user may not want to switch to the ordinary base station with a higher rate. However, in the current processing mode, the UE does not know the reason for the handover at this time, and cannot present the handover reason to the user. Therefore, the user cannot decide whether to use the ordinary base station according to different situations, thereby lowering the user body. risk. SUMMARY OF THE INVENTION In view of this, the present invention provides a list update method, a mobility management unit, and a user equipment, which are used to solve the problem that the UE and the network side allow the access CSG identifier list to be out of synchronization. The waste of radio resources caused by cell reselection and the like, and the fact that the user cannot decide whether to use an ordinary base station according to different situations and cause a decrease in user experience. According to an aspect of the present invention, there is provided a method for updating a list of allowed CSG identifiers of a user equipment when the user equipment is in a connected state, wherein the user equipment accesses the CSG as a temporary user of the CSG. Corresponding home base station. The list updating method according to the present invention includes: in a case where it is determined that the camping duration of the user equipment at the home base station exceeds a preset threshold, the mobility management unit notifies the user equipment that the currently accessed CSG is unavailable, so that the user equipment deletes its local Allows access to the identifier in the CSG identification list that corresponds to the above CSG. Further, after the user equipment is notified that the CSG is unavailable, the method further includes: receiving, by the user equipment, the foregoing notification by the mobility management unit, and deleting the identifier of the CSG from the allowed access CSG identifier list. According to another aspect of the present invention, a mobility management unit is provided. The mobility management unit according to the present invention includes: a determination module and a notification module. The determining module is configured to determine whether the resident time of the user equipment that is accessed by the temporary user of the CSG exceeds a preset threshold in the home base station corresponding to the CSG, and if the determination is yes, the notification module is triggered; Sending a notification to the user equipment notifying the user that the CSG is unavailable. According to still another aspect of the present invention, a user equipment is provided. The user equipment according to the present invention includes: a receiving module and an updating module. The receiving module is configured to receive a notification sent by the mobility management unit, where the notification is used to indicate that the user equipment is currently accessed. The CSG is unavailable; the update module is configured to delete, according to the foregoing notification received by the receiving module, the identifier of the CSG identifier list of the user equipment corresponding to the CSG. According to still another aspect of the present invention, a home base station is provided. A home base station according to the present invention includes: a receiving module and a transmitting module. The receiving module is configured to receive a handover request message sent by the mobility management unit, where the handover request message carries indication information indicating that the CSG currently accessed by the user equipment is unavailable, and the sending module is configured to receive, according to the receiving module, The foregoing switching request message sends a handover command to the user equipment, where the handover command carries the indication information. With the foregoing at least one aspect of the present invention, when the UE accesses the home base station corresponding to the CSG as a temporary user of the CSG, when the UE stays at the home base station (that is, the duration of the UE accessing the home base station) exceeds a preset. At the threshold, the mobility management unit notifies the UE that the currently accessed CSG is unavailable, so that the UE can save the allowed access to the CSG identifier list corresponding to the CSG, so that the UE and the network side allow access to the CSG identifier list. Synchronization avoids the waste of radio resources by the UE due to incorrect cell reselection, access 4 advertisement generation, invalid access attempts, etc., so that the user can decide whether to use the ordinary base station according to different situations, thereby improving the user. Experience. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: Figure 1 is a network architecture diagram of a home base station in a 3G mobile communication network; Figure 2 is a network architecture diagram in which a home base station and a core network element are directly connected in a 3G mobile communication network; Figure 3 is a family in a 3G mobile communication network. A network architecture diagram in which a base station is connected to a core network element through a gateway; FIG. 4 is a network architecture diagram in which the home base station gateway in FIG. 3 does not integrate a user plane function; 5 is a flowchart of a method for updating a list according to an embodiment of the present invention; FIG. 6 is a flowchart of Embodiment 1; FIG. 7 is a flowchart of Embodiment 2; FIG. 8 is a flowchart of Embodiment 3; FIG. 10 is a flowchart of Embodiment 5; FIG. 11 is a schematic structural diagram of a mobility management unit according to an embodiment of the present invention; FIG. 12 is a mobile management unit according to a preferred embodiment of the present invention. FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention; FIG. 14 is a schematic structural diagram of a user equipment according to a preferred embodiment of the present invention; FIG. 15 is a schematic structural diagram of a home base station according to an embodiment of the present invention; . Detailed description of the function

When deleting the list, the operation of the list is not notified to the UE, so that the allowed access CSG identifier list of the UE and the network side are not synchronized. Therefore, the embodiment of the present invention provides an improved list update scheme. In the embodiment of the present invention, when the mobility management unit determines that the camping time of the UE as the CSG temporary user exceeds a preset threshold (that is, the length of time that the temporary user is allowed to access), the mobility management unit notifies the UE of the currently accessed CSG. Not available, such that the UE can delete the identity of its saved CSG identification list that corresponds to the currently accessed CSG. The embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The preferred embodiments of the present invention are described in the following with reference to the accompanying drawings, which are intended to illustrate and illustrate the invention. According to the embodiment of the present invention, a list update method is first provided, which is used to update the allowed access CSG identifier list of the UE when the UE is in a connected state. FIG. 5 is a flowchart of a method for updating a list according to an embodiment of the present invention. As shown in FIG. 5, the method for updating a list according to an embodiment of the present invention mainly includes the following steps (step S501 - step S503): Step S501: The mobile management unit determines The UE that is the temporary user of the CSG accesses the home base station of the CSG, and the duration of the stay of the UE is more than a preset threshold. In a specific implementation, after the UE that is the temporary CSG user accesses the home base station corresponding to the CSG, The mobile management unit detects whether the UE stays in the home base station (that is, the duration of the UE accessing the home base station). The preset threshold is the length of time that the CSG allows the temporary user to access. In a specific implementation process, a timer may be set for the UE, and the duration of the timer is a length of time for allowing the temporary user to access. When the UE accesses the home base station as a temporary user of the CSG, the timer is started. When the timer expires, the mobility management unit determines that the duration of the UE accessing the home base station times out. Step S503: The mobility management unit notifies the UE that the CSG corresponding to the currently accessed home base station is unavailable, so that the UE deletes the identifier corresponding to the CSG in the local allowed access CSG identifier list. In a specific implementation process, the mobility management unit notifies the UE that the CSG is unavailable, including but not limited to the following two methods:

1. The mobility management unit triggers a handover, and sends a handover request message to the home base station, where the handover request message carries indication information indicating that the CSG is unavailable; after receiving the handover request, the home base station sends a handover command to the UE, where The switching command carries indication information indicating that the CSG is unavailable;

2. Before the handover is triggered, the mobility management unit sends a mobility management notification message to the UE, where the mobility management notification message carries indication information indicating that the CSG is unavailable. After receiving the notification sent by the mobility management unit, the UE deletes the identifier of the CSG from the allowed access CSG identifier list. If the home base station currently accessed by the UE is a home mode in a mixed mode, that is, the home base station can adopt closed mode access or open mode access, the mobility management unit determines the CSG. After being unavailable, it is further determined whether the access mode of the UE can be changed from the closed mode to the open mode. If yes, the mobility management unit changes the access mode of the UE from the closed mode to the open mode, and notifies the UE of the current access. The mode is open mode.

After receiving the notification from the mobility management unit, the UE deletes the identifier of the CSG from the list of allowed access CSG identifiers, and also displays ^! If the mobile management unit informs the UE that the current access mode is the open mode, the UE also displays the information to the user. According to the information, the user knows that the currently accessed CSG is unavailable, thereby converting In the open mode, if the user does not want to adopt this mode, the handover can be manually initiated to switch to other home base stations. In the embodiment of the present invention, the mobility management unit may be a mobility management entity (Mobile Management Entity, which is called MME), and the home base station is an HeNB, or the mobility management unit may be The GPRS monthly support node (Serving GPRS Support Node, called SGSN), the home base station is an HNB. According to the foregoing method for updating the list provided by the embodiment of the present invention, when the CSG currently accessed by the UE is unavailable, the UE may delete the locally allowed allowed access CSG identifier list, so that the UE and the network side allow access to the CSG identifier. The list stays in sync. To further understand the specific implementation process of the foregoing list update method provided by the embodiment of the present invention, the following describes an evolved radio access network (Evolved UTRAN, called E-UTRAN) or UTRAN as an example. In the first embodiment, the UE that is the temporary CSG user accesses the HeNB. After the time when the UE accesses the HeNB expires, the UE notifies the UE to update the whitelist by using a Radio Resource Control (RRC) message. FIG. 6 shows a flow of notifying the UE to update the whitelist by using the RRC message in the embodiment. As shown in FIG. 6, the method mainly includes the following steps (step 601 - step 617): Step 601: The CSG currently accessed by the UE The set timer expires; Step 602: The current MME notifies the HeNB to initiate the handover, and carries an indication that the reason for triggering the handover is that the CSG currently accessed by the UE is unavailable. Step 603: The current HeNB triggers the UE by using an air interface message. The top 4 measurement 4 report, the measurement 4 is used for the HeNB to decide which cell to switch to (ie, the target cell); The target cell may be another available HeNB under EUTRAN coverage or a common base station under EUTRAN coverage, or switched to a cell covered by UTRAN or GSM/EDGE Radio Access Network (GSM/EDGE Radio Access Network, called GERAN). . Step 604: The source HeNB initiates a handover request to the source MME, where the GF handover request carries the target cell identifier and a bearer list that needs to be forwarded. Step 605: The source MME selects the target MME or the SGSN according to the target cell identifier, and the source MME sends a forwarding relocation request to the target MME/SGSN, where the relocation request carries the international user of the UE. (International Mobile Subscriber Identification Number, called IMSI), target MME/SGSN identity, target cell identity, mobility management context and payload context, and whether to forward data flags directly. If the handover to the target cell is connected to the same MME, the target MME and the source MME in the process are the same entity. Step 606, the target MME/SGSN determines whether to re-select the security gateway (Security GateWay, the cartridge is called S-GW); if the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW, where The tunnel endpoint identifier (the tunnel endpoint Identifier, the control plane address, and the data network gateway (the packet data network gateWay) is carried in the IMSI and the target MME/SGSN carrying the UE. And parameters such as TEID, and the target MME/SGSN will need to establish a bearer. If the handover does not require reselection of the S-GW, the target S-GW and the source S-GW in the flow are one entity, and step 606, step 607, and steps 610 and 611 need not be performed. Step 607: The target S-GW allocates a related resource to the bearer, and returns a create-load response to the target MME/SGSN, where the created bearer response carries the S-GW address and the TEID information. Step 608: If the target network is UTRAN The target SGSN sends a relocation request to the target radio network controller (Radio Network Controller, RNC) or the target HNB GW, requesting to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, Relevant information required for authentication and integrity protection, and a list of radio bearers that need to be established. If the target network is EUTRAN, the target MME sends to the target eNB or HeNB The handover request is performed to request to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, related information required for authentication and integrity protection, and a radio bearer list that needs to be established. The target MME/SGSN sends a relocation request to the target HeNB or the eNB or the RNC or HNB GW under the coverage of the UTRAN, requesting to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, the authentication and integrity protection. Relevant information needed, as well as a list of wireless bearers that need to be established. Step 609: The target eNB or the HeNB or the UTRAN covers the RNC or the HNB GW to return a relocation request response to the target MME/SGSN, where the parameters carried in the relocation request response include the successfully established radio bearer list and the failed radio list. . Step 610: If the source HeNB decides to adopt the indirect forwarding mode, and the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW. Step 611: The target S-GW returns a create bearer response to the target MME/SGSN. Step 612: The target MME/SGSN returns a forwarding relocation response to the source MME, where the parameters carried in the relocation response include the target MME/SGSN control plane tunnel end identifier and address, radio bearer setup information, and data forwarding tunnel end Identification and address. Step 613: In the indirect forwarding mode, the source MME sends a tunnel creation request to the source S-GW to create a tunnel for temporarily transmitting indirectly forwarded data. The tunnel needs to be released after the end of forwarding. Step 614: The source S-GW returns a create bearer response to the source MME. Step 615: The source MME sends a handover command to the source HeNB after completing the preparation phase of the handover. Step 616: The source HeNB notifies the UE to perform handover, where the carrying cause indication is that the currently accessed CSG is unavailable.

After receiving the information, the UE deletes the CSG id of the currently accessed HeNB from the list of allowed access CSG identifiers saved by the UE. Alternatively, this reason can be indicated to the user. Step 617: Perform a subsequent switching process. In the specific implementation process, the subsequent handover process can be implemented by using the prior art, and is not specifically mentioned. Those skilled in the art can disclose from existing ones. The specific execution process of the subsequent process is obtained in the data, and constitutes a complete process that can be implemented with the embodiment. In the embodiment, the UE that is the temporary CSG user accesses the HeNB in this embodiment. After the time when the UE accesses the HeNB expires, the UE notifies the UE to update the whitelist by using a Radio Resource Control (RRC) message. FIG. 7 shows a flow of notifying the UE to update the whitelist by using the RRC message in the embodiment. As shown in FIG. 7, the method mainly includes the following steps (step 701 - step 717): Step 701: The CSG currently accessed by the UE The set timer expires. Step 702: The current SGSN informs the HNB GW to initiate the handover, and carries an indication that the reason for triggering the handover is that the CSG currently accessed by the UE is unavailable. Step 703: The source HNB GW triggers the HNB to go to the UE to acquire the measurement 4 report, and is used to determine which cell to switch to. The target cell may be an available HeNB under EUTRAN coverage or a common base station under EUTRAN coverage, or may be handed over to other available home base stations or ordinary base stations under UTRAN/GERAN coverage. Step 704: The source HNB GW initiates a relocation request to the source SGSN, where the relocation request carries the target cell identifier and a bearer list that needs to perform data forwarding. Step 705: The source SGSN selects the target MME or the SGSN according to the target cell identifier, and the source SGSN sends a forwarding relocation request to the target MME/SGSN, where the parameters carried in the relocation request include the IMSI of the UE, the target MME/SGSN identifier. , target cell identity, mobility management context and bearer context, and whether to forward data flags directly. If the handover to the target cell is connected to the same SGSN, then the target SGSN and the source SGSN in the process are one entity. Step 706: The target MME/SGSN determines whether the S-GW is to be reselected. If the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW, where the IMSI of the UE and the TEID of the target MME/SGSN are carried. Control plane address, P-GW address and TEID parameters. The target MME/SGSN will need to establish a bearer identity. If the handover does not require reselection of the S-GW, then the target S-GW and the source S-GW in the flow are one entity, and step 706, step 707, and steps 710 and 711 need not be performed. Step 707: The target S-GW allocates related resources for the bearer, and returns a create bearer response to the target MME/SGSN, where the S-GW address and the TEID information are carried. Step 708: If the target network is a UTRAN, the target SGSN sends a relocation request to the target RNC or the target HNB GW to request to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, the authentication, and the integrity. Protection related information, a list of radio bearers that need to be established. If the target network is the EUTRAN, the target MME sends a handover request to the target eNB or the HeNB, requesting to establish a radio bearer, where the handover request carries the identifier of the UE, the cause value of the relocation, and the correlation required for the authentication and integrity protection. Information, a list of wireless bearers that need to be established. Step 709: The target eNB or the HeNB or the UTRAN covers the RNC or the HNB GW to return a relocation request response to the target MME/SGSN, where the parameters carried in the response include the successfully established radio bearer list and the failed radio list. Step 710: If the source HNB GW decides to adopt the indirect forwarding mode, and the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW. Step 711: The target S-GW returns a create bearer response to the target MME/SGSN. Step 712: The target MME/SGSN returns a forwarding relocation response to the source SGSN, where the parameters carried in the response include the target MME/SGSN control plane tunnel end identifier and address, the radio bearer setup information, and the tunnel end identifier of the data forwarding. address. In step 713, the indirect forwarding mode is adopted, and the source SGSN sends a tunnel creation request to the source S-GW to create a tunnel for temporarily transmitting indirectly forwarded data. The tunnel needs to be released after the end of forwarding. Step 714: The source S-GW returns a create bearer response to the source SGSN. Step 715: The source SGSN sends a relocation command to the source HNB GW after completing the preparation phase of the handover. Step 716: The source HNB GW notifies the UE to perform the handover by using the source HNB, where the notification carries a reason indication that the current CSG is unavailable.

After receiving the information, the UE deletes the currently accessed CSG id from the list of allowed access CSG identifiers saved by the UE. Optionally, the reason may be indicated to the user. Step 717: Perform a subsequent switching process. In the specific implementation process, the subsequent handover process can be implemented by using the prior art, and is not specifically mentioned. A person skilled in the art can obtain a specific execution process of the subsequent process from the existing disclosed materials, and constitute a complete process that can be realized with the embodiment. In the third embodiment, the UE that is the temporary CSG user accesses the HeNB in this embodiment. After the time when the UE accesses the HeNB expires, the non-access stratum (Non-Access Stratum, NAS) message is used to notify the UE to update the whitelist. Process. FIG. 8 shows a flow of notifying the UE to update the whitelist by using the NAS message in the embodiment. As shown in FIG. 8, the method mainly includes the following steps (step 801 - step 818): Step 801: The CSG currently accessed by the UE The set timer expires. Step 802: The source MME sends an Evolved Packet System (Evolved Packet System) mobile management notification message to the UE, where the notification message carries indication information indicating that the CSG currently accessed by the UE is unavailable.

After receiving the information, the UE deletes the CSG id of the currently accessed HeNB from the list of allowed access CSG identifiers saved by the UE. Optionally, this reason can be indicated to the user. Step 803: The current MME notifies the HeNB to initiate a handover. Optionally, the notification message may carry an indication that the reason for triggering the handover is that the CSG currently accessed by the UE is unavailable. Step 804: The current HeNB triggers the UE to detect the target cell by using the air interface message to enable the HeNB to decide which target cell to switch to. The target cell may be another available HeNB under EUTRAN coverage or a common base station under EUTRAN coverage, or handover to a cell under UTRAN/GERAN coverage. Step 805: The source HeNB initiates a handover request to the source MME, where the handover request carries the target cell identifier and a bearer list that needs to perform data forwarding. Step 806: The source MME selects the target MME or the SGSN according to the target cell identifier, and the source MME sends a forwarding relocation request to the target MME/SGSN, where the parameters carried in the request include the IMSI of the UE, the target MME/SGSN identifier, and the target. Cell identity, mobility management context and bearer context, and whether to forward data flags directly. If the handover to the target cell is connected to the same MME, the target MME and the source MME in the process are one entity. Step 807: The target MME/SGSN determines whether the S-GW is to be reselected. If the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW, where the request carries the IMSI of the UE and the target MME/ Parameters such as TEID, control plane address, P-GW address, and TEID of the SGSN. The target MME/SGSN will need to establish a bearer identity. If the handover does not require reselection of the S-GW, the target S-GW and the source S-GW in the flow are one entity, and step 807, step 808, and steps 811 and 812 need not be performed. Step 808: The target S-GW is a related resource allocated to the bearer, and returns a create bearer response to the target MME/SGSN, where the response carries the S-GW address and the TEID information. Step 809: If the target network is a UTRAN, the target SGSN sends a relocation request to the target RNC or the target HNB GW to request to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, the authentication, and the integrity. Protection related information, a list of radio bearers that need to be established. If the target network is the EUTRAN, the target MME sends a handover request to the target eNB or the HeNB, requesting to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, and the related information required for the authentication and integrity protection. , the list of radio bearers that need to be established. The target MME/SGSN sends a relocation request to the target HeNB or the eNB or the RNC or HNB GW under the coverage of the UTRAN, requesting to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, the authentication and the integrity. The relevant information needed for protection, the list of radios that need to be established. Step 810: The target eNB or the HeNB or the RNRAN covers the RNC or the HNB GW to return a relocation request response to the target MME/SGSN, where the parameters carried in the response include the successfully established radio bearer list and the failed radio list. Step 811, if the source HeNB decides to adopt the indirect forwarding mode, and the S-GW changes. Then, the target MME/SGSN sends a create bearer request to the target S-GW. Step 812: The target S-GW returns a create bearer response to the target MME/SGSN. Step 813: The target MME/SGSN returns a forwarding relocation response to the source MME, where the parameters carried in the response include the target MME/SGSN control plane tunnel end identifier and address, the radio bearer setup information, and the tunnel end identifier of the data forwarding. address. Step 814: Indirect forwarding mode, the source MME sends a tunnel creation request to the source S-GW to create a tunnel for temporarily transmitting indirectly forwarded data. The tunnel needs to be released after the end of forwarding. Step 815: The source S-GW returns a create bearer response to the source MME. Step 816: After the source MME completes the preparation phase of the handover, the source MME sends a handover command to the source HeNB. Step 817: The source HeNB notifies the UE to perform handover. Step 818, performing a subsequent switching process. In the specific implementation process, the subsequent handover process can be implemented by using the prior art, and is not specifically mentioned. A person skilled in the art can obtain a specific execution process of the subsequent process from the existing disclosed materials, and constitute a complete process that can be implemented with the embodiment. Embodiment 4 In this embodiment, a UE that is a temporary CSG user accesses the HeNB, and when the UE accesses the HeNB has timed out, the UE is notified by the NAS message to update the whitelist. FIG. 9 shows a flow of notifying the UE to update the whitelist by using the NAS message in the embodiment. As shown in FIG. 9, the method mainly includes the following steps (step 901 - step 918): Step 901: The CSG currently accessed by the UE The set timer expires. Step 902: The source SGSN sends a GPRS mobility management notification message to the UE, where the carrying indication indicates that the CSG currently accessed by the UE is unavailable.

After receiving the information, the UE deletes the CSG id of the currently accessed HNB from the list of allowed access CSG identifiers saved by the UE. Optionally, this reason can be indicated to the user. Step 903: The current SGSN notifies the HNB GW to initiate a handover. Optional, in the message The indication may be carried, indicating that the reason for triggering the handover is that the CSG currently accessed by the UE is no longer available. Step 904: The source HNB GW triggers the HNB to go to the UE to acquire the measurement 4 report, and is used to determine which target cell to switch to. The target cell may be an available HeNB under EUTRAN coverage or a common base station under EUTRAN coverage, or may be handed over to other available home base stations or ordinary base stations under UTRAN/GERAN coverage. Step 905: The source HNB GW initiates a relocation request to the source SGSN, where the request carries the target cell identifier and a bearer list that needs to perform data forwarding. Step 906: The source SGSN selects the target MME or the SGSN according to the target cell identifier, and the source SGSN sends a forwarding relocation request to the target MME/SGSN, where the parameters carried in the request include the IMSI of the UE, the target MME/SGSN identifier, and the target. Cell identity, mobility management context and bearer context, and whether to forward data flags directly. If the handover to the target cell is connected to the same SGSN, the target SGSN and the source SGSN in the process are the same entity. Step 907: The target MME/SGSN determines whether the S-GW is to be reselected. If the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW, where the request carries the IMSI of the UE and the target MME/ Parameters such as TEID, control plane address, P-GW address, and TEID of the SGSN. The target MME/SGSN will need to establish a bearer identity. If the handover does not require reselection of the S-GW, the target S-GW and the source S-GW in the flow are one entity, and step 907, step 908, and steps 911 and 912 need not be performed. Step 908: The target S-GW allocates a related resource to the bearer, and returns a create bearer response to the target MME/SGSN, where the response carries the S-GW address and the TEID information. Step 909: If the target network is a UTRAN, the target SGSN sends a relocation request to the target RNC or the target HNB GW to request to establish a radio bearer, where the request carries the identifier of the UE, the cause value of the relocation, the authentication, and the integrity. Protection related information, a list of radio bearers that need to be established. If the target network is the EUTRAN, the target MME sends a handover request to the target eNB or the HeNB, requesting to establish a radio bearer, where the request carries the identifier of the UE, and the relocation Relevant information required for cause value, authentication, and integrity protection, a list of radio bearers that need to be established. Step 910: The target eNB or the HeNB or the RNRAN covers the RNC or the HNB GW to return a relocation request response to the target MME/SGSN, where the parameters carried in the charging response include the successfully established radio bearer list and the failed radio list. Step 911: If the source HNB GW decides to adopt the indirect forwarding mode, and the S-GW changes, the target MME/SGSN sends a create bearer request to the target S-GW. Step 912: The target S-GW returns a create bearer response to the target MME/SGSN. Step 913: The target MME/SGSN returns a forwarding relocation response to the source SGSN, where the parameters carried in the response include the target MME/SGSN control plane tunnel end identifier and address, the radio bearer setup information, and the tunnel end identifier of the data forwarding. address. In step 914, the indirect forwarding mode is adopted, and the source SGSN sends a create bearer request to the source S-GW to create a tunnel for temporarily transmitting indirect forwarding data. The tunnel needs to be released after the end of forwarding. Step 915: The source S-GW returns a create bearer response to the source SGSN. Step 916: The source SGSN sends a relocation command to the source HNB GW after completing the preparation phase of the handover. Step 917: The source HNB GW notifies the UE to perform handover by using the source HNB. Step 918, performing a subsequent handover process. In the specific implementation process, the subsequent handover process can be implemented by using the prior art, and is not specifically mentioned. A person skilled in the art can obtain a specific execution process of the subsequent process from the existing disclosed materials, and constitute a complete process that can be implemented with the embodiment. In the present embodiment according to the fifth embodiment, after the EUTRAN or UTRAN coverage as a temporary CSG user's UE timer expires, the current access and the HeNB / HNB mixed mode, network initiated access mode ^ ¹ UE to open embodiment the way. FIG. 10 is a flowchart of the embodiment. As shown in FIG. 10, the method mainly includes the following steps (step 101 - step 105): Step 101: The timer set by the CSG currently accessed by the UE times out. Step 102: The mobility management entity MME/SGSN sends a mobility management notification message to the UE. The carrying indication indicates that the CSG currently accessed by the UE is unavailable.

After receiving the information, the UE deletes the CSG id of the currently accessed HeNB/HNB from the list of allowed access CSG identifiers saved by the UE. Optionally, this reason can be indicated to the user. Step 103: The mobility management entity (MME or SGSN) determines an access mode of the HeNB/HNB that the current UE accesses. If the current access mode is the hybrid mode and the UE accesses in the closed mode, the mobility management entity The MME/SGSN decides to change the access mode of the UE to the open mode. Step 104: The mobility management entity MME/SGSN sends a mobility management notification message to the UE, where the traffic message carries an indication indicating that the CSG currently accessed by the UE is used. Zhang is open access (Open access).

After receiving the information, the UE deletes the CSG id of the currently accessed HeNB/HNB from the list of allowed access CSG identifiers saved by the UE. Optionally, this reason can be indicated to the user. Step 105: The MME initiates a process of changing the access mode of the UE to the development mode. The subsequent specific process can be completed by using the existing mode change process, and will not be described here. The judgment of step 101 and step 103 in the above process can be completed simultaneously, at this time, the step

The notification of 102 and step 104 can be sent to the UE in a message. Although the embodiment of the present invention is described by using UTRAN or E-UTRAN as an example, the present invention is not limited thereto. The same applies to other wireless networks. When the CSG accessed by the UE is unavailable, the UE is notified by an entity on the network side. The object of the invention can be achieved. Therefore, the technical solutions provided by the embodiments of the present invention may also be adopted in other wireless networks. According to an embodiment of the present invention, a mobility management unit is further provided, and the mobility management unit may be used to implement the foregoing list update method provided by the embodiment of the present invention. FIG. 11 is a schematic structural diagram of a mobility management unit according to an embodiment of the present invention. As shown in FIG. 11, the mobility management unit according to the embodiment of the present invention mainly includes: a determining module 11 and a notification module 13. The determining module 11 is configured to determine whether the resident time of the user equipment that is accessed by the temporary user of the CSG in the CSG exceeds a preset threshold, and if the determination is yes, the notification module 13 is triggered; the notification module 13 The method is connected to the judging module 11, and is configured to send a notification to the user equipment, to notify the user equipment that the CSG is unavailable, so that the user equipment deletes the identifier of the CSG identifier list corresponding to the CSG in the user equipment. Further, as shown in FIG. 12, the mobility management unit according to the embodiment of the present invention further includes: the determining module 15 is connected to the determining module 11 for determining whether the result of the determining by the determining module 11 is YES. The access mode of the user equipment is changed from the closed mode to the open mode. The notification module 13 is further configured to notify the user that the mode currently accessed by the device is an open mode. The foregoing mobility management unit provided by the embodiment of the present invention may be currently accessed by the UE.

When the CSG is unavailable, the UE is notified to enable the UE to delete the identifier of the locally stored allowed access CSG identifier list corresponding to the CSG. According to an embodiment of the invention, a user equipment is also provided, which can be used in conjunction with the mobility management unit described above. FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 13, a user equipment according to an embodiment of the present invention mainly includes: a receiving module 31 and an updating module 33. The receiving module 11 is configured to receive the notification sent by the mobility management unit, where the notification is used to indicate that the CSG currently accessed by the user equipment is unavailable; the update module 33 is connected to the receiving module 11 and configured to receive according to the receiving module 11 The above notification may delete the identifier of the CSG identification list corresponding to the CSG in the access device of the user equipment. Further, as shown in FIG. 14, the user equipment according to the embodiment of the present invention may further include: a display module 35, configured to display a reason for deleting the identifier of the CSG. The user equipment according to the embodiment of the present invention may maintain synchronization of the allowed access CSG identification list of the user equipment and the allowed access CSG identification list of the network side. According to an embodiment of the present invention, a home base station is further provided, and the home base station can be used in conjunction with the foregoing mobility management unit and user equipment. FIG. 15 is a schematic structural diagram of a home base station according to an embodiment of the present invention. As shown in FIG. 15, a home base station according to an embodiment of the present invention mainly includes: a receiving module 51 and a sending module 53. The receiving module 51 is configured to receive a handover request message sent by the mobility management unit, where the handover request message carries indication information indicating that the CSG currently accessed by the user equipment is unavailable; the sending module 53 is connected to the receiving module 51. And sending, to the user equipment, a handover command according to the foregoing handover request message received by the receiving module 51, where the handover command carries the indication information. Specifically, when the user equipment accesses the home base station as a CSG temporary user, when the user equipment access time exceeds the allowed access time, the mobility management unit determines that the user equipment is currently The access CSG is unavailable, thereby triggering the handover, sending the handover request message to the home base station, and carrying the indication information in the handover request message, after the receiving module 51 of the home base station receives the handover request message, the sending module 53 sends The user equipment sends a handover command. Similarly, the handover command carries the indication information. After receiving the handover command, the user equipment determines that the currently accessed CSG is unavailable, and then locally accesses the CSG identifier list. The identifier corresponding to the currently accessed CSG. As described above, with the technical solution provided by the embodiment of the present invention, when the UE accesses the home base station corresponding to the CSG as a temporary user of the CSG, when the UE is in the home base station, the UE accesses the home base station. When the duration exceeds the preset threshold, the mobility management unit notifies the UE that the currently accessed CSG is unavailable, so that the UE can save the allowed access to the CSG identifier list corresponding to the CSG, thereby enabling the UE and the network side. The access to the CSG identifier list is synchronized, which avoids the waste of the radio resources caused by the erroneous cell reselection, the access report generation, the invalid access attempt, and the like, and saves the radio resources; and, by using the technical solution of the embodiment of the present invention, This allows the user to decide whether to use an ordinary base station according to different situations, thereby improving the user experience. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A list update method, configured to update a list of allowed access user group CSG identifiers of the user equipment when the user equipment is in a connected state, where the user equipment accesses the CSG corresponding to a temporary user of the CSG The home base station is characterized in that: the method includes: after determining that the camping duration of the user equipment in the home base station exceeds a preset threshold, the mobility management unit notifies the user equipment that the CSG is unavailable, And causing the user equipment to delete the identifier corresponding to the CSG in the allowed access CSG identifier list.

2. The method according to claim 1, wherein the notifying the user equipment that the CSG is unavailable comprises:

The mobility management unit triggers a handover, and sends a handover request message to the home base station, where the handover request message carries indication information indicating that the CSG is unavailable; the home base station receives the handover request message, Sending a handover command to the user equipment, where the handover command carries the indication information.

The method according to claim 1, wherein the notifying that the CSG currently accessed by the user equipment is unavailable comprises:

The mobility management unit sends a mobility management notification message to the user equipment, where the mobility management notification message carries indication information indicating that the CSG is unavailable.

The method according to claim 1, wherein, if the home base station currently accessed by the user equipment is a home base station in a hybrid mode, notifying the user equipment that the CSG is unavailable is further:

The mobility management unit determines whether the access mode of the user equipment can be changed from the closed mode to the open mode. If the determination result is yes, the mode that the user equipment is currently accessing is notified to be an open mode.

The method according to any one of claims 1 to 4, wherein, after the user equipment is notified that the CSG is unavailable, the method further includes:

The user equipment receives the notification of the mobility management unit, and the identifier of the CSG is deleted from the list of allowed access CSG identifiers.

The method of claim 5, after the notification that the user equipment is unavailable, the method further includes:

The user equipment displays a reason for deleting the CSG identifier of the home base station.

The method according to any one of claims 1 to 4, wherein the mobility management unit is a mobility management entity, the home base station is an evolved home base station HeNB, or the mobility management The unit is a GPRS service support node, and the home base station is an ordinary home base station HNB.

A mobile management unit, comprising:

a determining module, configured to determine whether the resident time of the user equipment that is accessed by the temporary user of the CSG exceeds a preset threshold in the home base station corresponding to the CSG, and triggers the notification module if the determination is yes;

The notification module is configured to send a notification to the user equipment, to notify the user equipment that the CSG is unavailable.

9. The mobility management unit according to claim 8, wherein the mobility management unit further comprises:

a determining module, configured to determine, when the result of the determining by the determining module is YES, whether to change an access mode of the user equipment from a closed mode to an open mode;

The notification module is further configured to notify the user equipment that the mode currently accessed is an open mode.

A user equipment, comprising:

a receiving module, configured to receive a notification sent by the mobility management unit, where the notification is used to indicate that the CSG currently accessed by the user equipment is unavailable;

And an update module, configured to delete, according to the notification received by the receiving module, an identifier corresponding to the CSG in the allowed access CSG identifier list of the user equipment.

The user equipment according to claim 10, wherein the user equipment further comprises: a display module, configured to display a reason for deleting the identifier of the CSG. A home base station, comprising:

a receiving module, configured to receive a handover request message sent by the mobility management unit, where the handover request message carries indication information indicating that the CSG currently accessed by the user equipment is unavailable;

And a sending module, configured to send, according to the handover request message received by the receiving module, a handover command to the user equipment, where the handover command carries the indication information.