WO2013107375A1 - 移动中继节点跟踪区域配置及位置更新方法和装置 - Google Patents

移动中继节点跟踪区域配置及位置更新方法和装置 Download PDF

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Publication number
WO2013107375A1
WO2013107375A1 PCT/CN2013/070653 CN2013070653W WO2013107375A1 WO 2013107375 A1 WO2013107375 A1 WO 2013107375A1 CN 2013070653 W CN2013070653 W CN 2013070653W WO 2013107375 A1 WO2013107375 A1 WO 2013107375A1
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WO
WIPO (PCT)
Prior art keywords
tracking area
mobile
denb
dedicated
mme
Prior art date
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PCT/CN2013/070653
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English (en)
French (fr)
Inventor
陈琳
褚丽
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2014552499A priority Critical patent/JP5872711B2/ja
Priority to US14/373,091 priority patent/US9560625B2/en
Priority to EP13738445.9A priority patent/EP2793512A4/en
Publication of WO2013107375A1 publication Critical patent/WO2013107375A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/047Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a mobile relay node tracking area configuration and location update method and apparatus.
  • LTE-Advanced Long-Term Evolution advance
  • UTE-Advanced retains the core of LTE for the evolution of Long-Term Evolution (LTE), and on this basis, it uses a series of technologies to expand the frequency domain and airspace to improve spectrum utilization and increase System capacity and other purposes.
  • Wireless Relay technology one of the technologies in LTE-Advanced, aims to extend the coverage of cells, reduce dead zones in communications, balance load, transfer hotspots, and save user equipment (User Equipment, referred to as UE) transmit power.
  • UE User Equipment
  • a relay node provides a function and service similar to that of a normal eNB to a UE accessing its cell, and accesses an eNB serving the eNB in a manner similar to a normal UE through a radio interface, serving the RN.
  • the eNB is called a Donor eNB (Host Base Station), which is referred to as DeNB.
  • the DeNB is connected to a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the functions provided by the MME for the UE include: processing of control signaling such as user access control, authentication, data encryption, service bearer control, paging, and handover control.
  • the plurality of MMEs serve to serve a common geographic area in which the eNB and/or DeNB (hereinafter referred to as eNB/DeNB) are connected in a mesh structure to a plurality of MMEs in the area.
  • the MME set in the public geographic area constitutes an MME pool, which is also referred to as an MME pool area, and corresponds to a plurality of Tracking Areas (TAs).
  • TAs Tracking Areas
  • the 0 AM (Operation and Maintenance) entity usually configures the TA area information to which the cell belongs.
  • the RN cell uses TAC (Tracking Area Code) in the system information SIB1 (System Information Block Typel).
  • SIB1 System Information Block Typel
  • the area code broadcasts the TA to which the cell belongs.
  • the MME connected to the UE allocates a tracking area identifier list (TAI list) to the UE, and the tracking area identifier includes the PLMN (Public Land Mobile Network, public). Land Mobile Network) Identification and TAC.
  • PLMN Public Land Mobile Network, public). Land Mobile Network
  • the UE If the UE selects or reselects an RN cell, and according to the SIB1 message broadcasted by the RN, it is found that the TA to which the RN cell belongs is not in the TAI list registered by the UE, the UE needs to perform a Tracking Area Update (TAU) process to notify the MME. The current location, and the corresponding updated TAI list.
  • TAU Tracking Area Update
  • the MME of the UE may send a paging message to all eNBs/DeNBs covered by the tracking area included in the list according to the TAI list of the UE.
  • the eNB/DeNB After receiving the paging message, the eNB/DeNB determines whether the TA of each cell (including the RN cell) is consistent with the TAI information included in the TAI list. If they are consistent, the UE is paged through the air interface paging message on the corresponding cell. Upon receiving the corresponding paging information on the air interface, the UE performs a service request procedure and transitions to the connected state. After the process is completed, the S-GW sends the data to the eNB and the UE to which the UE is currently connected.
  • the RN's TAC is configured and how to maintain the consistency with the currently connected DeNB needs to be reconsidered. If not properly configured, it will cause tracking area update of the mobile relay and new paging related problems. For example, in the process of RN mobility, if the TAC of the RN changes according to the TAC of the target DeNB, this may cause the UE served by the RN to continuously detect that the TA of the RN is inconsistent with the TAI list registered by the UE during the RN movement. Therefore, a large number of UEs simultaneously perform TAU, resulting in signaling congestion.
  • the MME serving the UE has It may not be known that the DeNB serves the TA to which the new RN belongs, and does not send the paging information to the DeNB, so that the UE cannot be paged.
  • the embodiments of the present invention provide a mobile relay tracking area configuration and location update method and apparatus, which prevent a large number of UEs served by the RN from simultaneously triggering location update during the RN movement process.
  • An embodiment of the present invention provides a mobile relay (RN) tracking area configuration and a location update method, including:
  • the terminal (UE) accessing the mobile RN allocates a tracking area list including the dedicated tracking area to the UE when the registration or location update is performed;
  • the dedicated tracking area is a tracking area code dedicated to mobile relay.
  • the embodiment of the present invention further provides a mobile relay (RN) tracking area configuration and a location update method, including:
  • the dedicated tracking area being a tracking area code dedicated to the mobile relay
  • the terminal (UE) accessing the mobile RN allocates a tracking area list including the dedicated tracking area to the UE when the registration or location update is performed;
  • the target DeNB updates the tracking area of the DeNB maintained by the mobility management entity (MME) when the tracking area configured by each cell of the target donor base station (DeNB) of the mobile RN does not include the tracking area configured by the mobile RN. information.
  • MME mobility management entity
  • the embodiment of the present invention further provides a mobile relay (RN) tracking area configuration and a location update method, including:
  • the mobility management entity (MME) of the UE allocates a tracking area list including the tracking area to which each DeNB cell passes along the RN.
  • the embodiment of the present invention further provides a mobile relay (RN) tracking area configuration and a location updating device, including: a first configuration module, a second configuration module, and a third configuration module, where:
  • the first configuration module is configured to: configure a dedicated tracking area for the host base station (DeNB); the second configuration module is configured to: configure a dedicated tracking area for the mobile RN accessing the DeNB;
  • the third configuration module is configured to: when the terminal (UE) registration or location update of the mobile RN is accessed, allocate, to the UE, a tracking area list that includes the dedicated tracking area;
  • the dedicated tracking area is a tracking area code dedicated to mobile relay.
  • the embodiment of the present invention further provides a mobile relay (RN) tracking area configuration and a location updating device, including a fourth configuration module, a fifth configuration module, and an update module, where:
  • the fourth configuration module is configured to: configure a dedicated tracking area for the mobile RN as the base station, where the dedicated tracking area is a tracking area code dedicated to the mobile relay;
  • the fifth configuration module is configured to: when the terminal (UE) registration or location update of the mobile RN is accessed, allocate, to the UE, a tracking area list that includes the dedicated tracking area;
  • the update module is configured to: determine that the tracking area configured by each cell of the target donor base station (DeNB) that the mobile RN accesses does not include the tracking area configured by the mobile RN, and causes the target DeNB to update the mobility management entity (MME) The tracked area information of the DeNB maintained.
  • DeNB target donor base station
  • MME mobility management entity
  • the embodiment of the present invention further provides a mobile relay (RN) tracking area configuration and a location updating device, including an eighth configuration module and a ninth configuration module, where:
  • the eighth configuration module is configured to: configure, for the mobile RN, a host connected to the mobile RN Base station (DeNB) The same tracking area of the cell;
  • the ninth configuration module located in a mobility management entity (MME) of a terminal (UE) accessing the mobile RN, is configured to: allocate, during the UE registration or location update, the UE to include the RN along the way A tracking area list of the tracking area to which each DeNB cell belongs.
  • MME mobility management entity
  • the method and the device in the embodiment of the present invention ensure that the paging area list allocated by the UE includes the tracking area configured by the mobile relay serving the UE, and prevents a large number of UEs served by the RN from simultaneously triggering location update during the RN moving process.
  • the tracking area configuration information of each RN or DeNB cell maintained by the MME is updated as necessary to ensure that the TA configuration information of the air interface network is consistent, and the correct paging route is ensured.
  • 1 is a schematic diagram of handover of a relay node between different DeNBs
  • FIG. 2 is a flow chart of Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural view of a device according to Embodiment 1 of the present invention.
  • FIG. 4 is a flow chart of Embodiment 2 of the present invention.
  • Figure 5 is a schematic structural view of a device according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of an update module according to Embodiment 2 of the present invention.
  • FIG. 7 is a flow chart of Embodiment 3 of the present invention.
  • Figure 8 is a schematic structural view of a device according to Embodiment 3 of the present invention.
  • Figure 9 is a flow chart of an application example 1 of the present invention.
  • Figure 10 is a flow chart of an application example 2 of the present invention.
  • Figure 11 is a flow chart of an application example 3 of the present invention.
  • Figure 12 is a flow chart of an application example 4 of the present invention.
  • Figure 13 is a flow chart of an application example 5 of the present invention. Preferred embodiment of the invention
  • the mobile relay tracking area configuration and location update method in this embodiment are as shown in FIG. 2, and include the following steps:
  • Step 101 Configure a dedicated tracking area for the DeNB, where the dedicated tracking area is a tracking area code dedicated to the mobile relay node.
  • the DeNB may obtain a tracking area configuration parameter from a network management system of the DeNB, where the tracking area configuration parameter corresponds to a dedicated tracking area.
  • Step 102 Configure a dedicated tracking area for the mobile RN accessing the DeNB.
  • the RN can obtain the tracking area configuration parameter from the network management system of the RN, where the tracking area configuration parameter corresponds to the dedicated tracking area.
  • Step 103 The UE accessing the mobile RN allocates a tracking area list including the dedicated tracking area to the UE when registering or updating the location.
  • the MME of the UE determines that the tracking area of the cell currently accessed by the UE is a dedicated tracking area, and the tracking area list allocated by the MME for the UE includes the dedicated tracking area.
  • the DeNB, the RN, and the UE are all configured with a tracking area list including the same dedicated tracking area. Therefore, when the RN moves, neither the RN nor the UE performs location update.
  • the device for implementing the foregoing method includes: a first configuration module, a second configuration module, and a third configuration module, where:
  • the first configuration module is configured to configure a dedicated tracking area for the DeNB
  • the second configuration module is configured to configure a dedicated tracking area for the mobile RN accessing the DeNB;
  • the third configuration module is configured to allocate, to the UE, a tracking area list including the dedicated tracking area when accessing the UE registration or location update of the mobile RN.
  • the first configuration module is located at the DeNB, and is configured to configure a dedicated tracking area for the DeNB in the following manner: Obtain a tracking area configuration parameter from the network management system of the DeNB, where the tracking area configuration parameter corresponds to a dedicated tracking area.
  • the second configuration module is located in the mobile RN, and is configured to configure a dedicated tracking area for the RN in the following manner: Obtain a tracking area configuration parameter from the network management system of the RN, where the tracking area configuration parameter corresponds to a dedicated tracking area.
  • the third configuration module is located in the MME of the UE, and is configured to allocate a tracking area list including the dedicated tracking area to the UE in the following manner: determining that the tracking area of the currently accessed cell of the UE is a dedicated tracking area, The dedicated tracking area is included in the tracking area list allocated by the UE.
  • This embodiment provides another mobile relay tracking area configuration and location update method. As shown in FIG. 4, the method includes the following steps:
  • Step 201 Configure a dedicated tracking area for the mobile RN as the base station, where the dedicated tracking area is a tracking area code dedicated to the mobile relay;
  • the MME may allocate the tracking area list to the mobile RN in one of the following ways: the MME allocates a tracking area list to the mobile RN according to the DeNB location currently accessed by the mobile RN; or
  • the tracking area list allocated by the MME for the mobile RN includes a tracking area to which each cell of the DeNB passes along the mobile RN.
  • the DeNBs that are accessed and accessed along the way are configured with the same MME pool or overlapping MME pools.
  • Step 202 The UE accessing the mobile RN allocates a tracking area list including the dedicated tracking area to the UE when the registration or location update is performed.
  • the MME of the UE determines that the tracking area of the cell currently accessed by the UE is a dedicated tracking area, and the tracking area list allocated by the MME for the UE includes the dedicated tracking area.
  • Step 203 When the tracking area configured by each cell of the target DeNB accessed by the mobile RN does not include the tracking area configured by the mobile RN, the target DeNB updates the MME maintained by the target MME. Tracking area information of the DeNB.
  • the target DeNB acquires the tracking area information configured by the mobile RN, and then determines, according to the information, whether the tracking area of each cell includes the tracking area information configured by the mobile RN.
  • the target DeNB may obtain the tracking area information configured by the mobile RN in the following manner: In the mobile RN handover preparation phase, the source DeNB sends the tracking area information configured by the mobile RN to the target DeNB; or, the mobile RN is in the S1. During the establishment of the interface or the X2 interface, the tracking area information configured by the mobile RN is sent to the target DeNB.
  • the tracking area information configured by the mobile RN refers to the tracking area information configured by the OAM for the mobile RN.
  • the RN and the UE configure a tracking area list including the same dedicated tracking area, so the UE does not perform location update when the RN moves.
  • the device for implementing the above method is shown in FIG. 5, and includes: a fourth configuration module, a fifth configuration module, and an update module, where:
  • the fourth configuration module is configured to configure a dedicated tracking area for the mobile RN as the base station;
  • the fifth configuration module is configured to allocate the dedicated tracking for the UE when accessing the UE registration or location update of the mobile RN a list of tracking areas for the area;
  • the update module is configured to determine that the tracking area configured by each cell of the target DeNB to which the mobile RN accesses does not include the tracking area configured by the mobile RN, and causes the target DeNB to update the tracking area information of the DeNB maintained by the MME.
  • the update module includes an information acquisition unit, a determination unit, and an update unit, where:
  • the information obtaining unit is configured to: obtain the tracking area information configured by the mobile RN in the following manner: in the mobile RN handover preparation phase, learn the tracking area information configured by the mobile RN from the source DeNB; or establish an S1 interface in the mobile RN or During the X2 interface process, the tracking area information of the mobile RN is obtained from the mobile RN;
  • the determining module is configured to determine, according to the information acquired by the information acquiring unit, whether the tracking area configured by each cell of the target DeNB accessed by the mobile RN includes the tracking area configured by the mobile RN area;
  • the updating unit is configured to: when the determining module determines that the tracking area configured by each cell of the target DeNB that the mobile RN accesses does not include the tracking area configured by the mobile RN, and causes the target DeNB to update the DeNB maintained by the MME. Track area information.
  • the apparatus further includes a sixth configuration module, located at the MME, configured to be in the mobile
  • the mobile station When the RN is registered as the terminal, the mobile station is allocated a tracking area list in one of the following ways: the tracking area list is allocated to the mobile RN according to the DeNB location currently accessed by the mobile RN; or the tracking area list allocated for the mobile RN The tracking area to which each cell of the DeNB passes along the mobile RN is included.
  • the apparatus further includes a seventh configuration module, configured to configure the same MME pool or overlapping MME pools for the DeNBs that are traversed and accessed by the mobile RN.
  • a seventh configuration module configured to configure the same MME pool or overlapping MME pools for the DeNBs that are traversed and accessed by the mobile RN.
  • the fifth configuration module is located in the MME, and is configured to allocate a tracking area list that includes the dedicated tracking area to the UE by: determining that the tracking area of the cell currently accessed by the UE is a dedicated tracking area, and then allocating the UE The dedicated tracking area is included in the tracking area list.
  • This embodiment provides another mobile relay tracking area configuration and location update method. As shown in FIG. 7, the method includes the following steps:
  • Step 301 Configure, for the mobile RN, the same tracking area as the DeNB cell accessed by the mobile RN.
  • Step 302 When the UE accessing the mobile RN is in registration or location update, the MME of the UE allocates, to the UE, a tracking area list including a tracking area to which each DeNB cell passes along the RN.
  • the method further includes: when the mobile RN switches to the target DeNB, the mobile RN updates the tracking area configuration to ensure that the tracking area of the mobile RN is consistent with the tracking area of the target DeNB.
  • the RN and the DeNB cell have the same tracking area, and the tracking area list is included in the tracking area list, and the tracking area of each DeNB cell that the RN passes along the path is included in the tracking area. This does not perform a location update by the UE when the RN moves.
  • the apparatus for implementing the above method is as shown in FIG. 8, and includes: an eighth configuration module and a ninth configuration module, wherein:
  • the eighth configuration module is configured to configure, for the mobile RN, the same tracking area as the DeNB cell accessed by the mobile RN;
  • the ninth configuration module located in the MME of the UE accessing the mobile RN, is configured to allocate, to the UE, a tracking area that includes a tracking area to which each DeNB cell belongs along the RN when the UE is registered or updated. List.
  • the apparatus further includes a tenth configuration module, located at the mobile RN, configured to update the tracking area configuration of the mobile RN when the mobile RN switches to the target DeNB, to ensure that the tracking area of the mobile RN is consistent with the tracking area of the target DeNB. .
  • a tenth configuration module located at the mobile RN, configured to update the tracking area configuration of the mobile RN when the mobile RN switches to the target DeNB, to ensure that the tracking area of the mobile RN is consistent with the tracking area of the target DeNB.
  • This example is an application example corresponding to the method of Embodiment 1 described above, and this example focuses on the TA configured for each cell of all DeNBs along the RN being the same as the TA configured for each cell of the RN. As shown in Figure 9, the following steps are included:
  • Step 401 The network management system OAM of the DeNB configures a dedicated TA for the DeNB dedicated to the serving mobile RN.
  • the RN obtains the tracking area configuration parameter from the network management system of the RN, and the obtained tracking area configuration parameter corresponds to the dedicated tracking area.
  • Step 402 When the RN accesses the DeNB for registration, the MME of the RN allocates a tracking area list including the dedicated tracking area to the RN.
  • the present embodiment assumes that the TAs configured for each of the DeNBs along the RN are the same as the TAs configured for each cell of the RN. Therefore, if the RN acquires the tracking area list at this time, it is not necessary to initiate the location update. In other embodiments, the RN may not switch to other DeNBs. A location update is required.
  • Step 403 After the RN completes the registration, the RN obtains a tracking area configuration parameter from the network management system OAM of the RN, where the tracking area parameter corresponds to the dedicated tracking area.
  • Step 404 When the RN can work normally and access the UE, when the accessed UE performs network registration or location update, the MME of the UE determines the tracking area information of the currently accessed cell of the UE, if the tracking area is a dedicated tracking area. Then, the dedicated area is included in the tracking area list allocated by the MME of the UE for the UE.
  • the MME of the UE and the MME of the RN may be physically the same MME, but are logically two MMEs.
  • the present example is an application example corresponding to the method of Embodiment 2 above.
  • a dedicated tracking area is configured for the RN, and the tracking area list allocated by the UE served by the RN includes a dedicated tracking area, so that the UE can be prevented from moving in the RN.
  • Position update during the process when the TA configured for each cell of the DeNB along the RN is different from the TA configured by each cell of the RN, the RN may need to perform location update during the mobile process.
  • the DeNB can exchange the tracking area configured by the RN in the handover preparation phase, and then the target DeNB initiates the update of the tracking area configuration of the DeNB cell to the connected MME in advance, thereby ensuring the correct routing of the paging message. As shown in Figure 10, the following steps are included:
  • Step 501 When the RN accesses the registration, the MME of the RN allocates a TAI list to the RN according to the location of the DeNB cell currently accessed by the RN.
  • Step 502 After completing registration, the RN obtains configuration parameters from the OAM of the RN, and configures a dedicated tracking area for each cell of the mobile RN.
  • Step 503 When the UE of the RN serves to register or update the location, the MME of the UE allocates a tracking area list including a dedicated tracking area.
  • the MME of the UE may be obtained according to an Initial UE message.
  • the TAI information is used to determine the cell tracking area information that is currently accessed by the UE. If the RN-specific tracking area is used, the dedicated tracking area is included in the tracking area list allocated to the UE, so that the UE does not need to perform the following process of following the RN. Track area updates.
  • Step 504 When the RN moves from the source DeNB to the target DeNB, in the RN handover preparation phase, the source DeNB may send the RN as the tracking area information configured by the base station in the handover request message sent by the target DeNB.
  • Step 505 If the tracking area configured by each cell of the target DeNB does not include the tracking area configured by the RN, the DeNB needs to send the S1 signaling such as the eNB Configuration Update message to all the MME pool areas associated with the DeNB.
  • the MME updates the tracking area information configured by the target DeNB recorded by the MME.
  • the source DeNB needs to send the eNB Configuration Update.
  • S1 signaling such as a message is sent to all MMEs in the MME pool area associated with the DeNB, and the tracking area information configured by the source DeNB recorded by the MME is updated, thereby preventing the source DeNB from receiving unnecessary paging messages.
  • This step is applicable to the scenario in which the current RN and the MME use the relay architecture 2.
  • the DeNBs that need to be accessed and accessed by the mobile RN are configured with the same MME pool or overlapping MME pools, so that the DeNB is the RN.
  • the MME allocated by the serving UE does not need to be changed during the RN mobility, thereby further ensuring that the UE served by the RN does not need to perform tracking area update.
  • the RN and the MME use the trunking architecture 1, that is, when the RN is directly connected to the MME, it is not necessary to update the tracking area information maintained by the MME through the DeNB.
  • the target DeNB acquires the TMC information of each RN of the cell. If the TA of each cell of the target DeNB does not include the TA in a certain cell of the RN, the DeNB needs to send an eNB Configuration Update message. All MMEs in the MME pool area associated with the DeNB update the TA information configured by the target DeNB recorded by the MME.
  • the paging message of the UE served by the paging RN is then routed to the DeNB and the RN.
  • the tracking area information of the RN cell configuration is exchanged between the DeNBs in the handover preparation phase, that is, in the RN handover preparation phase, the handover request message sent by the source DeNB to the target DeNB carries the RN as the tracking area information configured by the base station, so that the target DeNB is enabled.
  • the configuration update may be sent to the MME in advance, and the MME updates the TAI information configured by the target DeNB, so that the paging is further improved. It is valid.
  • Step 506 If the tracking area of the target DeNB cell to which the RN is handed over is not in the tracking area list of the RN, the RN performs a tracking area update process after completing the handover, and updates the tracking area list.
  • the present example is an application example corresponding to the method of Embodiment 2 above.
  • a dedicated tracking area is configured for the RN, and the tracking area list allocated by the UE served by the RN includes a dedicated tracking area, so that the UE can be prevented from moving in the RN.
  • Position update during the process when the TA configured for each cell of the DeNB along the RN is different from the TA configured by each cell of the RN, the RN may need to perform location update during the mobile process.
  • the RN exchanges the tracking area configured by the RN when the S1 or X2 connection is established with the target DeNB, and then the target DeNB initiates updating the tracking area configuration of the DeNB cell to the connected MME, thereby ensuring the search.
  • the correct route to the message As shown in Figure 11, the following steps are included:
  • Step 601 When the RN accesses the registration, the MME of the RN allocates a TAI list to the RN according to the location of the RN.
  • Step 602 After completing the registration, the RN obtains a dedicated tracking area configuration parameter from the OAM of the RN, and configures a dedicated tracking area for each cell of the mobile RN.
  • Step 603 When the UE of the RN serves to register or update the location, the MME of the UE allocates a tracking area list including a dedicated tracking area.
  • the MME of the UE may determine, according to the TAI information acquired from the Initial UE message, the cell tracking area information that the current UE accesses, and if it corresponds to the RN dedicated tracking area, the dedicated tracking area is included in the tracking area list allocated to the UE. Therefore, the UE does not need to perform tracking area update in the process of following the RN movement.
  • Step 604 Perform handover from the source DeNB to the target DeNB during the RN mobility process.
  • Step 605 After the RN switches from the source DeNB to the target DeNB, and establishes the S1 and X2 interfaces with the target DeNB, the target DeNB acquires the RN configuration record of each cell. Regional information;
  • Step 606 If the tracking area configured by each cell of the target DeNB does not include a certain cell of the RN Set the tracking area, the DeNB sends an eNB Configuration Update message to all MMEs in the MME pool area associated with the DeNB, and updates the TA information configured by the target DeNB recorded by the MME;
  • the paging message of the UE served by the paging RN is then routed to the DeNB and the RN.
  • the source DeNB needs to send S1 signaling such as an eNB Configuration Update message to the DeNB. All the MMEs in the MME pool area update the tracking area information configured by the source DeNB recorded by the MME, so as to prevent the source DeNB from receiving unnecessary paging messages.
  • This step is applicable to the scenario in which the current RN and the MME use the relay architecture 2.
  • the DeNBs that need to be accessed and accessed by the mobile RN are configured with the same MME pool or overlapping MME pools, so that the DeNB is the RN.
  • the MME allocated by the serving UE does not need to be changed during the RN mobility, thereby further ensuring that the UE served by the RN does not need to perform tracking area update.
  • the RN and the MME use the trunking architecture 1, that is, when the RN is directly connected to the MME, it is not necessary to update the tracking area information maintained by the MME through the DeNB.
  • Step 607 If the tracking area of the target DeNB cell to which the RN is handed over is not in the tracking area list of the RN, the RN performs a tracking area update process after completing the handover, and updates the tracking area list.
  • This example is an application example corresponding to the method in the foregoing Embodiment 2, and the difference between this example and the previous example is that the MME of the RN allocates a tracking area list including the tracking area to which the RN belongs to each cell of the DeNB along the RN, thereby preventing the RN from moving. Tracking area updates during the process. As shown in Figure 12, the following steps are included:
  • Step 701 When the RN accesses the registration, the MME of the RN carries the relay type in the access request message, and if it is the mobile relay, allocates a tracking area list including the tracking area to which the RN belongs to each cell of the DeNB along the RN; When the mobile RN's mobile trajectory is fixed, the tracking area to which each cell of the DeNB passes along the way can be known in advance, thereby configuring the tracking area list.
  • Step 702 After completing the registration, the RN obtains a dedicated tracking area configuration parameter from the OAM of the RN, and configures a dedicated tracking area for each cell of the mobile RN.
  • Step 703 When the UE of the RN serves to register or update the location, the MME of the UE allocates a tracking area list including a dedicated tracking area.
  • the MME of the UE may determine, according to the TAI information acquired by the Initial UE message, the cell tracking area information that is accessed by the current UE, and if it corresponds to the RN dedicated tracking area, the dedicated tracking area is included in the tracking area list allocated to the UE. In this way, the UE does not need to perform tracking area update in the process of following the RN movement.
  • Step 704 Perform a handover from the source DeNB to the target DeNB during the RN mobility process.
  • Step 705 After the RN switches from the source DeNB to the target DeNB, and establishes the S1 and X2 interfaces with the target DeNB, the target DeNB acquires the RN configuration record of each cell. Regional information;
  • Step 706 If the tracking area configured by each cell of the target DeNB does not include the tracking area configured by the RN, the DeNB sends an eNB Configuration Update message to all MMEs in the MME pool area associated with the DeNB, and updates the target DeNB configuration recorded by the MME. TA information;
  • the paging message of the UE served by the paging RN is then routed to the DeNB and the RN.
  • the manner in which the tracking area configured by the RN is exchanged between the DeNBs in the handover preparation phase in the application preparation example 2 may be used to accelerate the process in which the MME updates the DeNB tracking area.
  • the source DeNB needs to send S1 signaling such as an eNB Configuration Update message to the DeNB. All the MMEs in the MME pool area update the tracking area information configured by the source DeNB recorded by the MME, so as to prevent the source DeNB from receiving unnecessary paging messages.
  • This step is applicable to the scenario in which the current RN and the MME use the relay architecture 2.
  • the DeNBs that need to be accessed and accessed by the mobile RN are configured with the same MME pool or overlapping MME pools, so that the DeNB is the RN.
  • the MME allocated by the serving UE does not exist during the RN movement. It needs to be changed to further ensure that the UE served by the RN does not need to perform tracking area update.
  • the RN and the MME use the trunking architecture 1, that is, when the RN is directly connected to the MME, it is not necessary to update the tracking area information maintained by the MME through the DeNB.
  • This example is an application example corresponding to the method in the foregoing Embodiment 3, where the tracking area of the RN is configured to be consistent with the tracking area to which the DeNB is accessed by the RN, and the tracking area list allocated by the RN is included in the tracking area list. Tracking area information to avoid UE location updates during RN movement.
  • the DeNB does not need to update the tracking area configuration information of the DeNB to the MME.
  • the RN may need to perform location update during the move. As shown in Figure 13, the following steps are included:
  • Step 801 When the RN accesses the registration, the MME of the RN allocates a tracking area list to the RN according to the location of the RN.
  • Step 802 After the RN completes the registration, configure a dedicated tracking area for each cell of the mobile RN according to the tracking area information configured by the accessed DeNB.
  • Step 803 When the RN serves the UE registration or the location update, the MME of the UE may determine whether the UE accesses the mobile RN by using the ECGI in the Initial UE message, and if yes, allocate the DeNB cells including the RN along the path. a list of tracking areas belonging to the tracking area;
  • the UE does not need to perform tracking area update in the process of following the RN movement.
  • Step 804 Perform a handover from the source DeNB to the target DeNB during the RN moving process.
  • Step 805 If the tracking area of the target DeNB cell to which the RN is handed over is not in the tracking area list of the RN, the RN performs the tracking area update process after completing the handover. , update the list of tracking areas.
  • the method and apparatus of the embodiments of the present invention ensure that the paging area list allocated by the UE includes the tracking area configured by the mobile relay serving the UE, and prevents a large number of UEs served by the RN from simultaneously triggering location update during the RN moving process.
  • the tracking area configuration information of each RN or DeNB cell maintained by the MME is updated as necessary to ensure that the TA configuration information of the air interface network is consistent, and the correct paging route is ensured.

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Abstract

一种移动中继节点跟踪区域配置及位置更新方法和装置,所述方法包括:为宿主基站(DeNB)配置专用跟踪区域;为接入该DeNB的移动RN配置专用跟踪区域;接入该移动RN的终端(UE)在注册或者位置更新时,为该UE 分配包含该专用跟踪区域的跟踪区域列表;所述专用跟踪区域是专用于移动中继的跟踪区域编码。该方法和装置尽量保证UE分配的寻呼区域列表包含服务该UE的移动中继所配置的跟踪区域,避免RN所服务的大量UE在RN 移动过程中同时触发位置更新。

Description

移动中继节点跟踪区域配置及位置更新方法和装置
技术领域
本发明涉及无线通信技术领域, 具体涉及移动中继节点跟踪区域配置及 位置更新方法和装置。
背景技术
为了满足日益增长的大带宽高速移动接入的需求, 第三代伙伴组织计划 ( Third Generation Partnership Projects , 简称 3GPP ) 推出高级长期演进 ( Long-Term Evolution advance , 简称; LTE- Advanced )标准。 UTE- Advanced 对于长期演进( Long-Term Evolution , 简称 LTE )的演进保留了 LTE的核心, 并在此基础上釆用了一系列技术对频域、 空域进行扩充, 以达到提高频谱利 用率、 增加系统容量等目的。 无线中继( Wireless Relay )技术即 LTE-Advanced中的技术之一, 旨在扩 展小区的覆盖范围、 减少通信中的死角地区、 平衡负载、 转移热点地区的业 务和节省用户设备(User Equipment, 简称 UE )的发射功率。 中继节点(Relay Node, 简称 RN )对接入其小区的 UE提供与普通 eNB类似的功能和服务, 又通过无线接口以类似于普通 UE的方式接入一个服务于它的 eNB, 服务于 RN的 eNB称为 Donor eNB (宿主基站) , 简称 DeNB。 DeNB与移动管理实 体( Mobility Management Entity, 简称 MME )连接。 MME为 UE提供的功能 包括: 用户接入控制、 鉴权、 数据加密、 业务承载控制、 寻呼、 切换控制等 控制信令的处理。 多个 MME—起服务一个公共的地理区域, 在该地理区域 内 eNB和 /或 DeNB (以下简称 eNB/DeNB )以网状结构连接到该区域内的多 个 MME。 在该公共地理区域内的 MME集合构成一个 MME池, 该区域又被 称为 MME池区域, 对应若干个跟踪区域 ( Tracking Area, 简称 TA ) , UE 在这些跟踪区域内移动时, 不需要更换所服务的 MME。
随着高速铁路大规模地建设和投入运行,在列车上通信的需求不断增大。 当前高速铁路实用速度已达到了 350公里 /小时, 受到多普勒频移、 小区频繁 切换、 高铁车厢穿透损耗大等影响, 现有网络基站的覆盖很难满足高铁的通 信质量需求。 因此业界提出在高铁上部署中继节点, 如图 1所示, 让高铁列 车中的用户如 UE1和 UE2直接与相对静止的 RN进行通信, 而 RN在随着高 铁移动过程中可在不同的 DeNB之间进行切换, 从而避免了高铁车厢中大量 用户的同时切换, 保证了 UE和 RN之间的通信质量, 此外通过增强移动 RN 与 DeNB之间的骨干连接, 能够较好的解决高铁存在的上述问题。 但是移动 RN的引入会对现有 LTE-Advanced中 RN相关标准产生较大的影响。
例如对于 RN小区, 0 AM ( Operation and Maintenance, 操作维护) 实体 通常会配置一个该小区所属的 TA 区域信息, RN 小区会在系统信息 SIB1 ( System Information Block Typel )中以 TAC ( Tracking Area Code, 跟踪区代 码)形式广播该小区所属 TA。 另一方面, UE开机后, 首先注册到网络才能 接受服务, 在注册过程中 , UE所连接的 MME为 UE分配跟踪区域标识列表 ( TAI list ) , 跟踪区标识包括 PLMN ( Public Land Mobile Network , 公共陆 地移动网 )标识和 TAC。 如果 UE选择或重选了一个 RN小区, 根据 RN广 播的 SIB1消息发现 RN小区所属的 TA不在 UE注册的 TAI列表中, 则 UE 需要执行跟踪区域更新 ( Tracking Area Update , 简称 TAU )过程向 MME告 知当前所在的位置, 并相应的更新所注册的 TAI列表。 当有对应于该 UE的 下行数据到达时, UE的 MME可根据 UE的 TAI列表, 向该列表所包含的跟 踪区域覆盖的所有 eNB/DeNB发送寻呼消息。 eNB/DeNB收到寻呼消息后, 逐个判断各个小区 (包括 RN小区) 的 TA是否与 TAI列表中包含的 TAI信 息一致, 如果一致, 则在相应的小区上通过空口寻呼消息寻呼 UE。 一旦在空 口接收到相应的寻呼信息, UE执行服务请求过程, 转移到连接状态。 该过程 完成后, S-GW将数据发送给 UE当前连接的 eNB以及 UE。
在 RN移动的过程中, RN的 TAC如何配置 , 以及如何保持与当前连接 的 DeNB的一致需要被重新考虑, 如果配置不当, 会引起移动中继的跟踪区 域更新以及寻呼相关的新问题。 例如在 RN移动的过程中, RN的 TAC如果 随着目标 DeNB的 TAC变化而变化, 这会引起 RN所服务的 UE在 RN移动 的过程中不断的检测到 RN的 TA与 UE注册的 TAI列表不一致,从而大量的 UE同时执行 TAU, 导致信令拥塞。 另一方面, 如果 RN的 TAC在整个移动 过程中保持不变, 而 DeNB并不包含 RN的 TA场景下, 服务 UE的 MME有 可能不知道 DeNB服务于新的 RN所属的 TA,不会将寻呼信息发送到 DeNB, 从而无法寻呼到 UE。 发明内容
本发明实施例提供一种移动中继跟踪区域配置及位置更新方法和装置, 避免 RN所服务的大量 UE在 RN移动过程中同时触发位置更新。
本发明实施例提供了一种移动中继( RN )跟踪区域配置及位置更新方法, 包括:
为宿主基站(DeNB ) 配置专用跟踪区域;
为接入该 DeNB的移动 RN配置专用跟踪区域;
接入该移动 RN的终端 ( UE )在注册或者位置更新时, 为该 UE分配包 含该专用跟踪区域的跟踪区域列表;
所述专用跟踪区域是专用于移动中继的跟踪区域编码。
本发明实施例还提供了一种移动中继(RN )跟踪区域配置及位置更新方 法, 包括:
为作为基站的移动 RN配置专用跟踪区域, 所述专用跟踪区域是专用于 移动中继的跟踪区域编码;
接入该移动 RN的终端 ( UE )在注册或者位置更新时, 为该 UE分配包 含该专用跟踪区域的跟踪区域列表;
当移动 RN接入的目标宿主基站(DeNB )的各小区配置的跟踪区域如果 不包含所述移动 RN配置的跟踪区域时, 所述目标 DeNB更新移动管理实体 ( MME ) 维护的该 DeNB的跟踪区域信息。
本发明实施例还提供了一种移动中继(RN )跟踪区域配置及位置更新方 法, 包括:
为移动 RN配置与该移动 RN所接入的宿主基站( DeNB )小区相同的跟 踪区域;
接入该移动 RN的终端 (UE )在注册或者位置更新时, UE的移动管理 实体( MME )为该 UE分配包含该 RN沿途经过的各 DeNB小区所属跟踪区 域的跟踪区域列表。
本发明实施例还提供了一种移动中继(RN )跟踪区域配置及位置更新装 置, 包括: 第一配置模块、 第二配置模块和第三配置模块, 其中:
所述第一配置模块设置为: 为宿主基站(DeNB ) 配置专用跟踪区域; 所述第二配置模块设置为: 为接入所述 DeNB的移动 RN配置专用跟踪 区域;
所述第三配置模块设置为: 在接入所述移动 RN的终端 (UE ) 注册或者 位置更新时, 为该 UE分配包含该专用跟踪区域的跟踪区域列表;
所述专用跟踪区域是专用于移动中继的跟踪区域编码。
本发明实施例还提供了一种移动中继(RN )跟踪区域配置及位置更新装 置, 包括第四配置模块、 第五配置模块和更新模块, 其中:
所述第四配置模块设置为: 为作为基站的移动 RN配置专用跟踪区域, 所述专用跟踪区域是专用于移动中继的跟踪区域编码;
所述第五配置模块设置为: 在接入所述移动 RN的终端 (UE ) 注册或者 位置更新时, 为该 UE分配包含该专用跟踪区域的跟踪区域列表;
所述更新模块设置为: 判断移动 RN接入的目标宿主基站( DeNB )的各 小区配置的跟踪区域如果不包含所述移动 RN配置的跟踪区域时, 使所述目 标 DeNB更新移动管理实体 ( MME ) 维护的该 DeNB的跟踪区域信息。
本发明实施例还提供了一种移动中继(RN )跟踪区域配置及位置更新装 置, 包括第八配置模块和第九配置模块, 其中:
所述第八配置模块设置为: 为移动 RN配置与该移动 RN所接入的宿主 基站(DeNB ) 小区相同的跟踪区域;
所述第九配置模块, 位于接入所述移动 RN的终端 (UE ) 的移动管理实 体(MME ) , 设置为: 在所述 UE注册或者位置更新时, 为该 UE分配包含 该 RN沿途经过的各 DeNB小区所属跟踪区域的跟踪区域列表。
本发明实施例方法和装置尽量保证 UE分配的寻呼区域列表包含服务该 UE的移动中继所配置的跟踪区域, 避免 RN所服务的大量 UE在 RN移动过 程中同时触发位置更新。 此外在 RN切换时, 必要时更新 MME维护的各个 RN或 DeNB小区的跟踪区域配置信息,从而保证空口网络的 TA配置信息一 致, 保证正确的寻呼路由。 附图概述
图 1是中继节点在不同的 DeNB之间切换示意图;
图 2是本发明实施例 1流程图;
图 3是本发明实施例 1装置结构示意图;
图 4是本发明实施例 2流程图;
图 5是本发明实施例 2装置结构示意图;
图 6是本发明实施例 2更新模块结构示意图;
图 7是本发明实施例 3流程图;
图 8是本发明实施例 3装置结构示意图;
图 9是本发明应用示例 1流程图;
图 10是本发明应用示例 2流程图;
图 11是本发明应用示例 3流程图;
图 12是本发明应用示例 4流程图;
图 13是本发明应用示例 5流程图。 本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。
实施例 1
本实施例的移动中继跟踪区域配置及位置更新方法如图 2所示, 包括以 下步骤:
步骤 101 , 为 DeNB配置专用跟踪区域; 所述专用跟踪区域是专用于移 动中继节点的跟踪区域编码;
较佳的, 该 DeNB可从 DeNB的网管系统获取跟踪区域配置参数, 该跟 踪区域配置参数对应于专用跟踪区域。
步骤 102, 为接入该 DeNB的移动 RN配置专用跟踪区域;
较佳的, RN可以从 RN的网管系统获取跟踪区域配置参数, 该跟踪区域 配置参数对应于专用跟踪区域。
步骤 103 , 接入该移动 RN的 UE在注册或者位置更新时, 为该 UE分配 包含该专用跟踪区域的跟踪区域列表。
较佳的, UE的 MME判断该 UE当前接入的小区的跟踪区域为专用跟踪 区域, 则该 MME为 UE分配的跟踪区域列表中包含该专用跟踪区域。
在本实施例中, DeNB、 RN和 UE均配置了包含相同专用跟踪区域的跟 踪区域列表, 因此在 RN移动时, RN和 UE均不会进行位置更新。
实现上述方法的装置如图 3所示, 包括: 第一配置模块、 第二配置模块 和第三配置模块, 其中:
该第一配置模块, 设置为为 DeNB配置专用跟踪区域;
该第二配置模块, 设置为为接入所述 DeNB的移动 RN配置专用跟踪区 域;
该第三配置模块, 设置为在接入所述移动 RN的 UE注册或者位置更新 时, 为该 UE分配包含该专用跟踪区域的跟踪区域列表。 优选地, 该第一配置模块位于 DeNB, 设置为釆用以下方式为 DeNB配 置专用跟踪区域: 从 DeNB的网管系统获取跟踪区域配置参数, 该跟踪区域 配置参数对应于专用跟踪区域。
优选地, 该第二配置模块位于移动 RN,设置为釆用以下方式为 RN配置 专用跟踪区域: 从 RN的网管系统获取跟踪区域配置参数, 该跟踪区域配置 参数对应于专用跟踪区域。
优选地, 该第三配置模块位于 UE的 MME, 设置为釆用以下方式为 UE 分配包含该专用跟踪区域的跟踪区域列表: 判断该 UE 当前接入的小区的跟 踪区域为专用跟踪区域, 则为 UE分配的跟踪区域列表中包含该专用跟踪区 域。
实施例 2
本实施例提供了另一种移动中继跟踪区域配置及位置更新方法, 如图 4 所示, 包括以下步骤:
步骤 201 ,为作为基站的移动 RN配置专用跟踪区域,所述专用跟踪区域 是专用于移动中继的跟踪区域编码;
优选地, 当该移动 RN以终端身份注册时, MME可釆用以下方式之一为 该移动 RN分配跟踪区列表: MME根据移动 RN当前接入的 DeNB位置为该 移动 RN分配跟踪区列表; 或者, MME为移动 RN分配的跟踪区列表中包含 该移动 RN沿途经过的 DeNB各小区所属的跟踪区域。 该移动 RN沿途所经 过并接入的 DeNB配置相同的 MME池或重叠的 MME池。
步骤 202, 接入该移动 RN的 UE在注册或者位置更新时, 为该 UE分配 包含该专用跟踪区域的跟踪区域列表;
具体可釆用以下方法分配:该 UE的 MME判断该 UE当前接入的小区的 跟踪区域为专用跟踪区域 ,则该 MME为 UE分配的跟踪区域列表中包含该专 用跟踪区域。
步骤 203 ,当移动 RN接入的目标 DeNB的各小区配置的跟踪区域如果不 包含所述移动 RN配置的跟踪区域时, 所述目标 DeNB更新 MME维护的该 DeNB的跟踪区域信息。
具体地, 目标 DeNB获取移动 RN配置的跟踪区域信息, 然后根据该信 息来判断各小区的跟踪区域是否包含该移动 RN配置的跟踪区域信息。 优选 地, 该目标 DeNB可釆用以下方式获知该移动 RN配置的跟踪区域信息: 在 移动 RN切换准备阶段, 源 DeNB将该移动 RN配置的跟踪区域信息发送给 目标 DeNB; 或者, 移动 RN在 S1接口或 X2接口建立过程中, 将该移动 RN 配置的跟踪区域信息发送给目标 DeNB。
上述移动 RN配置的跟踪区域信息是指 OAM为移动 RN配置的跟踪区域 信息。
在本实施例中, RN和 UE配置了包含相同专用跟踪区域的跟踪区域列表, 因此在 RN移动时, UE不会进行位置更新。
实现上述方法的装置如图 5所示, 包括: 第四配置模块、 第五配置模块 和更新模块, 其中:
该第四配置模块, 设置为为作为基站的移动 RN配置专用跟踪区域; 该第五配置模块, 设置为在接入所述移动 RN的 UE注册或者位置更新 时, 为该 UE分配包含该专用跟踪区域的跟踪区域列表;
该更新模块, 设置为判断移动 RN接入的目标 DeNB的各小区配置的跟 踪区域如果不包含所述移动 RN配置的跟踪区域时, 使所述目标 DeNB更新 MME维护的该 DeNB的跟踪区域信息。
优选地, 如图 6所示, 该更新模块包括信息获取单元、 判断单元和更新 单元, 其中:
该信息获取单元, 设置为釆用以下方式获知该移动 RN配置的跟踪区域 信息: 在移动 RN切换准备阶段, 从源 DeNB获知该移动 RN配置的跟踪区 域信息; 或者, 在移动 RN建立 S1接口或 X2接口过程中, 从移动 RN获取 该移动 RN的跟踪区域信息;
该判断模块, 设置为根据信息获取单元获取的信息, 判断移动 RN接入 的目标 DeNB的各小区配置的跟踪区域是否包含所述移动 RN配置的跟踪区 域;
该更新单元, 设置为在所述判断模块判断移动 RN接入的目标 DeNB的 各小区配置的跟踪区域不包含所述移动 RN配置的跟踪区域时, 使所述目标 DeNB更新 MME维护的该 DeNB的跟踪区域信息。
优选地, 上述装置还包括第六配置模块, 位于 MME,设置为在所述移动
RN以终端身份注册时, 釆用以下方式之一为该移动 RN分配跟踪区列表: 根 据移动 RN当前接入的 DeNB位置为该移动 RN分配跟踪区列表; 或者, 为 移动 RN分配的跟踪区列表中包含该移动 RN沿途经过的 DeNB各小区所属 的跟踪区域。
优选地, 上述装置还包括第七配置模块, 设置为为移动 RN沿途经过并 接入的 DeNB配置相同的 MME池或重叠的 MME池。
优选地, 该第五配置模块位于 MME, 设置为釆用以下方式为 UE分配包 含该专用跟踪区域的跟踪区域列表: 判断该 UE 当前接入的小区的跟踪区域 为专用跟踪区域, 则为 UE分配的跟踪区域列表中包含该专用跟踪区域。
实施例 3
本实施例提供了另一种移动中继跟踪区域配置及位置更新方法, 如图 7 所示, 包括以下步骤:
步骤 301 ,为移动 RN配置与该移动 RN所接入的 DeNB小区相同的跟踪 区域;
步骤 302, 接入该移动 RN的 UE在注册或者位置更新时, UE的 MME 为该 UE分配包含该 RN沿途经过的各 DeNB小区所属跟踪区域的跟踪区域 列表。
优选地, 上述方法还包括: 当移动 RN切换到目标 DeNB时, 移动 RN 更新跟踪区域配置, 以保证该移动 RN的跟踪区域与目标 DeNB的跟踪区域 一致。
在本实施例中, 配置 RN与 DeNB小区具有相同的跟踪区域, 且由于为 UE配置跟踪区列表中包含该 RN沿途经过的各 DeNB小区所属跟踪区域, 因 此在 RN移动时, UE不会进行位置更新。
实现上述方法的装置如图 8所示, 包括: 第八配置模块和第九配置模块, 其中:
所述第八配置模块,设置为为移动 RN配置与该移动 RN所接入的 DeNB 小区相同的跟踪区域;
所述第九配置模块, 位于接入所述移动 RN的 UE的 MME, 设置为在所 述 UE注册或者位置更新时,为该 UE分配包含该 RN沿途经过的各 DeNB小 区所属跟踪区域的跟踪区域列表。
优选地, 该装置还包括第十配置模块, 位于移动 RN, 设置为当移动 RN 切换到目标 DeNB时, 更新移动 RN的跟踪区域配置, 以保证该移动 RN的 跟踪区域与目标 DeNB的跟踪区域一致。
下面以几个应用示例说明上述实施例。
应用示例 1
本示例是对应于上述实施例 1方法的应用示例, 本示例侧重于为 RN沿 途的所有 DeNB各小区配置的 TA与 RN各个小区配置的 TA相同。如图 9所 示, 包括以下步骤:
步骤 401 , DeNB的网管系统 OAM为专用于服务移动 RN的 DeNB配置 专用 TA;
其中, RN从 RN的网管系统获取跟踪区域配置参数, 获取的跟踪区域配 置参数对应于专用跟踪区域。
步骤 402 , 当 RN接入 DeNB进行注册时 , RN的 MME为该 RN分配包 含专用跟踪区域的跟踪区域列表;
由于本实施例假设为 RN沿途的所有 DeNB各小区配置的 TA与 RN各个 小区配置的 TA相同, 因此, 如果 RN此时获取了跟踪区列表, 则无需再发起 位置更新。在其他实施例中,也可以不执行本步骤,则 RN在切换到其他 DeNB 时需要进行位置更新。
步骤 403 , RN完成注册后, RN从 RN的网管系统 OAM获取跟踪区域 配置参数, 该跟踪区域参数对应于专用跟踪区域;
步骤 404, 当 RN可以正常工作并接入 UE时, 接入的 UE在进行网络注 册或位置更新时, UE的 MME判断该 UE当前接入小区的跟踪区域信息, 如 果该跟踪区域为专用跟踪区域,则 UE的 MME为 UE分配的跟踪区域列表中 包含该专用区域。
UE的 MME与 RN的 MME在物理上可能是同一个 MME, 但是在逻辑 上是两个 MME。
通过上述步骤 401-404, 无论是 RN还是 UE在 RN移动的过程都无需进 行位置更新, 且寻呼信息能路由到 RN并通知到 UE。
应用示例 2
本示例是对应于上述实施例 2方法的应用示例, 本示例中为 RN配置专 用跟踪区域,且 RN所服务的 UE所分配的跟踪区域列表中包含有专用跟踪区 域,从而可以避免 UE在 RN移动过程中进行位置更新。但是本实施例侧重于 为 RN沿途的 DeNB各小区配置的 TA与 RN各个小区配置的 TA不相同时, RN有可能需要在移动过程中进行位置更新的场景。 此时, DeNB之间可在切 换准备阶段交互 RN配置的跟踪区域, 然后目标 DeNB提前发起向所连接的 MME更新该 DeNB小区的跟踪区域配置 ,从而保证寻呼消息的正确路由。如 图 10所示, 包括以下步骤:
步骤 501 , RN接入注册时, RN的 MME根据 RN当前接入的 DeNB小 区的位置为 RN分配 TAI列表;
步骤 502, RN完成注册后,从 RN的 OAM获取配置参数, 为该移动 RN 各小区配置专用跟踪区域;
步骤 503 , 当 RN服务的 UE注册或位置更新时, UE的 MME为其分配 包含专用跟踪区域的跟踪区域列表;
其中, UE的 MME可以根据从初始 UE消息 ( Initial UE message ) 中获 取的 TAI信息, 判断当前 UE接入的小区跟踪区域信息, 如果对应于 RN专 用跟踪区域, 则在分配给 UE的跟踪区域列表中包含该专用跟踪区域, 这样 UE在跟随 RN移动的过程无需进行跟踪区域更新。
步骤 504 , RN移动过程中进行从源 DeNB切换到目标 DeNB时, 在 RN 切换准备阶段, 源 DeNB可向目标 DeNB发送的切换请求消息中携带 RN作 为基站被配置的跟踪区域信息;
步骤 505 ,如果目标 DeNB各小区配置的跟踪区域不包含 RN某个小区配 置的跟踪区域, 则 DeNB需要发送 eNB Configuration Update (配置更新) 消 息等 S1信令给与 DeNB关联的 MME池区域内的所有 MME, 更新 MME记 录的目标 DeNB配置的跟踪区域信息; 类似的, RN切换完成之后, 如果源 DeNB 各小区配置的跟踪区域不包含 RN 某个小区配置的跟踪区域, 则源 DeNB需要发送 eNB Configuration Update (配置更新) 消息等 S1信令给与 DeNB关联的 MME池区域内的所有 MME, 更新 MME记录的源 DeNB配置 的跟踪区域信息, 从而避免源 DeNB收到不必要的寻呼消息。
本步骤适用于当前 RN与 MME釆用中继架构 2的场景, 在该场景下, 需要移动 RN沿途所经过并接入的 DeNB配置相同的 MME池或重叠的 MME 池,从而使得 DeNB为 RN所服务的 UE分配的 MME在 RN移动的过程中无 需改变, 从而进一步保证 RN所服务的 UE无需进行跟踪区域更新。
当 RN与 MME釆用中继架构 1时, 即 RN与 MME直接连接时, 则无需 通过 DeNB更新 MME所维护的艮踪区信息。
其中, 与目标 DeNB之间建立 S1以及 X2接口时, 目标 DeNB获取 RN 各小区配置 TAC信息, 如果目标 DeNB各小区的 TA不包含 RN某个小区中 TA,则 DeNB需要发送 eNB Configuration Update消息给与 DeNB关联的 MME 池区域内的所有 MME, 更新 MME记录的目标 DeNB配置的 TA信息。
通过这种方式, 之后寻呼 RN所服务 UE的寻呼消息才会路由到 DeNB 以及 RN。通过切换准备阶段在 DeNB之间交互 RN小区配置的跟踪区域信息, 即在 RN切换准备阶段, 源 DeNB向目标 DeNB发送的切换请求消息中携带 RN作为基站被配置的跟踪区域信息 , 从而使得目标 DeNB可以提前向 MME 发送配置更新, 加速 MME更新目标 DeNB配置的 TAI信息, 使得寻呼更及 时有效。
步骤 506,如果 RN沿途切换到的目标 DeNB小区的跟踪区域不在 RN的 跟踪区域列表中, 则 RN完成切换后执行跟踪区域更新过程, 更新跟踪区域 列表。
应用示例 3
本示例是对应于上述实施例 2方法的应用示例, 本示例中为 RN配置专 用跟踪区域,且 RN所服务的 UE所分配的跟踪区域列表中包含有专用跟踪区 域,从而可以避免 UE在 RN移动过程中进行位置更新。但是本实施例侧重于 为 RN沿途的 DeNB各小区配置的 TA与 RN各个小区配置的 TA不相同时, RN有可能需要在移动过程中进行位置更新。 此时, RN在切换完成后, 在与 目标 DeNB之间建立 S1或 X2连接时, 交互 RN配置的跟踪区域, 然后目标 DeNB发起向所连接的 MME更新该 DeNB小区的跟踪区域配置, 从而保证 寻呼消息的正确路由。 如图 11所示, 包括以下步骤:
步骤 601 , RN接入注册时, RN的 MME根据 RN的位置为 RN分配 TAI 列表;
步骤 602, RN完成注册后,从 RN的 OAM获取专用跟踪区域配置参数, 为该移动 RN各小区配置专用跟踪区域;
步骤 603 , 当 RN服务的 UE 注册或位置更新时, UE的 MME为其分配 包含专用跟踪区域的跟踪区域列表;
其中, UE的 MME可以根据从 Initial UE message中获取的 TAI信息判断 当前 UE接入的小区跟踪区域信息,如果对应于 RN专用跟踪区域,则在分配 给 UE的跟踪区域列表中包含该专用跟踪区域,这样 UE在跟随 RN移动的过 程无需进行跟踪区域更新。
步骤 604 , RN移动过程中进行从源 DeNB到目标 DeNB的切换; 步骤 605 , RN从源 DeNB切换到目标 DeNB后, 与目标 DeNB之间建立 S1以及 X2接口时, 目标 DeNB获取 RN各小区配置跟踪区域信息;
步骤 606,如果目标 DeNB各小区配置的跟踪区域不包含 RN某个小区配 置的跟踪区域, 则 DeNB发送 eNB Configuration Update消息给与 DeNB关联 的 MME池区域内的所有 MME, 更新 MME记录的目标 DeNB配置的 TA信 息;
通过这种方式, 之后寻呼 RN所服务 UE的寻呼消息才会路由到 DeNB 以及 RN。
类似的, RN切换完成之后,如果源 DeNB各小区配置的跟踪区域不包含 RN某个小区配置的跟踪区域,则源 DeNB需要发送 eNB Configuration Update (配置更新)消息等 S1信令给与 DeNB关联的 MME池区域内的所有 MME, 更新 MME记录的源 DeNB配置的跟踪区域信息, 从而避免源 DeNB收到不 必要的寻呼消息。
本步骤适用于当前 RN与 MME釆用中继架构 2的场景, 在该场景下, 需要移动 RN沿途所经过并接入的 DeNB配置相同的 MME池或重叠的 MME 池,从而使得 DeNB为 RN所服务的 UE分配的 MME在 RN移动的过程中无 需改变, 从而进一步保证 RN所服务的 UE无需进行跟踪区域更新。
当 RN与 MME釆用中继架构 1时, 即 RN与 MME直接连接时, 则无需 通过 DeNB更新 MME所维护的艮踪区信息。
步骤 607 ,如果 RN沿途切换到的目标 DeNB小区的跟踪区域不在 RN的 跟踪区域列表中, 则 RN完成切换后执行跟踪区域更新过程, 更新跟踪区域 列表。
应用示例 4
本示例是对应于上述实施例 2方法的应用示例, 本示例与上一示例的区 别在于 RN的 MME为 RN分配包含 RN沿途经过 DeNB各小区所属的跟踪区 域的跟踪区域列表, 从而避免 RN在移动的过程中进行跟踪区域更新。 如图 12所示, 包括以下步骤:
步骤 701 , RN接入注册时, RN的 MME在接入请求消息中携带中继类 型, 如果是移动中继, 则为 RN分配包含 RN沿途经过 DeNB各小区所属的 跟踪区域的跟踪区域列表; 当移动 RN的移动轨迹固定时, 可预先获知其沿途经过的 DeNB各小区 所属的跟踪区域, 以此为其配置跟踪区域列表。
步骤 702, RN完成注册后,从 RN的 OAM获取专用跟踪区域配置参数, 为该移动 RN各小区配置专用跟踪区域;
步骤 703 , 当 RN服务的 UE 注册或位置更新时, UE的 MME为其分配 包含专用跟踪区域的跟踪区域列表;
其中, UE的 MME可以从 Initial UE message中获取的 TAI信息判断当前 UE接入的小区跟踪区域信息, 如果对应于 RN专用跟踪区域, 则在分配给 UE的跟踪区域列表中包含该专用跟踪区域, 这样 UE在跟随 RN移动的过程 无需进行跟踪区域更新。
步骤 704, RN移动过程中进行从源 DeNB到目标 DeNB的切换; 步骤 705 , RN从源 DeNB切换到目标 DeNB后, 与目标 DeNB之间建立 S1以及 X2接口时, 目标 DeNB获取 RN各小区配置跟踪区域信息;
步骤 706,如果目标 DeNB各小区配置的跟踪区域不包含 RN某个小区配 置的跟踪区域, 则 DeNB发送 eNB Configuration Update消息给与 DeNB关联 的 MME池区域内的所有 MME, 更新 MME记录的目标 DeNB配置的 TA信 息;
通过这种方式, 之后寻呼 RN所服务 UE的寻呼消息才会路由到 DeNB 以及 RN。除此之外,也可釆用应用示例 2中在切换准备阶段 DeNB之间交互 RN所配置跟踪区域的方式, 以加速 MME更新 DeNB跟踪区域的过程。
类似的, RN切换完成之后,如果源 DeNB各小区配置的跟踪区域不包含 RN某个小区配置的跟踪区域,则源 DeNB需要发送 eNB Configuration Update (配置更新)消息等 S1信令给与 DeNB关联的 MME池区域内的所有 MME, 更新 MME记录的源 DeNB配置的跟踪区域信息, 从而避免源 DeNB收到不 必要的寻呼消息。
本步骤适用于当前 RN与 MME釆用中继架构 2的场景, 在该场景下, 需要移动 RN沿途所经过并接入的 DeNB配置相同的 MME池或重叠的 MME 池,从而使得 DeNB为 RN所服务的 UE分配的 MME在 RN移动的过程中无 需改变, 从而进一步保证 RN所服务的 UE无需进行跟踪区域更新。
当 RN与 MME釆用中继架构 1时, 即 RN与 MME直接连接时, 则无需 通过 DeNB更新 MME所维护的艮踪区信息。
应用示例 5
本示例是对应于上述实施例 3方法的应用示例, 通过配置 RN的跟踪区 域与 RN所接入的 DeNB所属跟踪区域保持一致,且 RN所服务的 UE被分配 的跟踪区域列表中包含沿途 DeNB所属的跟踪区域信息,从而避免 UE在 RN 移动过程中进行位置更新。 此外 DeNB也无需向 MME更新 DeNB的跟踪区 域配置信息。 但是上述场景下, RN有可能需要在移动过程中进行位置更新。 如图 13所示, 包括以下步骤:
步骤 801 , RN接入注册时 , RN的 MME根据 RN的位置为 RN分配跟踪 区域列表;
步骤 802, RN完成注册后, 根据所接入的 DeNB配置的跟踪区域信息为 移动 RN各小区配置专用的跟踪区域;
步骤 803 ,当 RN服务的 UE注册或位置更新时, UE的 MME可通过 Initial UE Message中的 ECGI判定该是否 UE接入了移动 RN,如果是, 则为其分配 包含 RN沿途经过的 DeNB各小区所属跟踪区域的跟踪区域列表;
通过本步骤, UE在跟随 RN移动的过程无需进行跟踪区域更新。
步骤 804 , RN移动过程中进行从源 DeNB到目标 DeNB的切换; 步骤 805 ,如果 RN沿途切换到的目标 DeNB小区的跟踪区域不在 RN的 跟踪区域列表中, 则 RN完成切换后执行跟踪区域更新过程, 更新跟踪区域 列表。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性 本发明实施例方法和装置尽量保证 UE分配的寻呼区域列表包含服务该 UE的移动中继所配置的跟踪区域, 避免 RN所服务的大量 UE在 RN移动过 程中同时触发位置更新。 此外在 RN切换时, 必要时更新 MME维护的各个 RN或 DeNB小区的跟踪区域配置信息,从而保证空口网络的 TA配置信息一 致, 保证正确的寻呼路由。

Claims

权 利 要 求 书
1、 一种移动中继节点 (RN )跟踪区域配置及位置更新方法, 包括: 为宿主基站(DeNB ) 配置专用跟踪区域;
为接入该 DeNB的移动 RN配置专用跟踪区域;
在接入该移动 RN的终端 ( UE ) 注册或者位置更新时, 为该 UE分配包 含该专用跟踪区域的跟踪区域列表;
其中, 所述专用跟踪区域是专用于移动中继的跟踪区域编码。
2、 如权利要求 1所述的方法, 其中:
所述为 DeNB配置专用跟踪区域, 包括: 所述 DeNB从所述 DeNB的网 管系统获取跟踪区域配置参数, 该跟踪区域配置参数对应于专用跟踪区域。
3、 如权利要求 1所述的方法, 其中:
所述为所述移动 RN配置专用跟踪区域, 包括: 所述移动 RN从所述移 动 RN的网管系统获取跟踪区域配置参数, 该跟踪区域配置参数对应于专用 艮踪区域。
4、 如权利要求 1所述的方法, 其中:
所述为所述 UE分配包含该专用跟踪区域的跟踪区域列表, 包括: 所述 UE的移动管理实体(MME )判断所述 UE当前接入的小区的跟踪 区域为专用跟踪区域,则该 MME为 UE分配的跟踪区域列表中包含该专用跟 踪区域。
5、 一种移动中继节点 (RN )跟踪区域配置及位置更新方法, 包括: 为作为基站的移动 RN配置专用跟踪区域, 所述专用跟踪区域是专用于 移动中继的跟踪区域编码;
在接入该移动 RN的终端 ( UE ) 注册或者位置更新时, 为该 UE分配包 含该专用跟踪区域的跟踪区域列表;
当移动 RN接入的目标宿主基站(DeNB )的各小区配置的跟踪区域不包 含所述移动 RN 配置的跟踪区域时, 所述目标 DeNB 更新移动管理实体 ( MME ) 维护的该 DeNB的跟踪区域信息。
6、 如权利要求 5所述的方法, 其还包括:
在移动 RN切换准备阶段, 源 DeNB将该移动 RN配置的跟踪区域信息 发送给目标 DeNB; 或者,
移动 RN在 S1接口或 X2接口建立过程中, 将该移动 RN配置的跟踪区 域信息发送给目标 DeNB。
7、 如权利要求 5或 6所述的方法, 其还包括:
所述移动 RN以终端身份注册时, MME釆用以下方式之一为该移动 RN 分配跟踪区列表:
所述 MME根据移动 RN 当前接入的宿主基站(DeNB )位置为该移动 RN分配跟踪区列表; 或者,
所述 MME为移动 RN分配的跟踪区列表中包含该移动 RN沿途经过的 DeNB各小区所属的跟踪区域。
8、 如权利要求 7所述的方法, 其中:
移动 RN沿途所经过并接入的 DeNB配置相同的 MME池或重叠的 MME 池。
9、 如权利要求 5所述的方法, 其中:
所述为该 UE分配包含该专用跟踪区域的跟踪区域列表, 包括:
UE的 MME判断该 UE当前接入的小区的跟踪区域为专用跟踪区域, 则 该 MME为 UE分配的跟踪区域列表中包含该专用跟踪区域。
10、 一种移动中继节点 (RN )跟踪区域配置及位置更新方法, 包括: 为移动 RN配置与该移动 RN所接入的宿主基站( DeNB )小区相同的跟 踪区域;
接入该移动 RN的终端 (UE )在注册或者位置更新时, UE的移动管理 实体( MME )为该 UE分配包含该 RN沿途经过的各 DeNB小区所属跟踪区 域的跟踪区域列表。
11、 如权利要求 10所述的方法, 其还包括:
当移动 RN切换到目标 DeNB时, 移动 RN更新跟踪区域配置, 以保证 该移动 RN的艮踪区域与目标 DeNB的艮踪区域一致。
12、 一种移动中继节点(RN )跟踪区域配置及位置更新装置, 包括: 第 一配置模块、 第二配置模块和第三配置模块, 其中:
所述第一配置模块设置为: 为宿主基站(DeNB ) 配置专用跟踪区域; 所述第二配置模块设置为: 为接入所述 DeNB的移动 RN配置专用跟踪 区域;
所述第三配置模块设置为: 在接入所述移动 RN的终端 (UE ) 注册或者 位置更新时, 为该 UE分配包含该专用跟踪区域的跟踪区域列表;
所述专用跟踪区域是专用于移动中继的跟踪区域编码。
13、 如权利要求 12所述的装置, 其中:
所述第一配置模块位于 DeNB , 是设置为釆用以下方式为 DeNB配置专 用跟踪区域: 从 DeNB的网管系统获取跟踪区域配置参数, 该跟踪区域配置 参数对应于专用跟踪区域。
14、 如权利要求 12所述的装置, 其中:
所述第二配置模块位于移动 RN,是设置为釆用以下方式为 RN配置专用 跟踪区域: 从 RN的网管系统获取跟踪区域配置参数, 该跟踪区域配置参数 对应于专用跟踪区域。
15、 如权利要求 12所述的装置, 其中:
所述第三配置模块位于 UE的移动管理实体(MME ) , 是设置为釆用以 下方式为 UE分配包含该专用跟踪区域的跟踪区域列表:判断该 UE当前接入 的小区的跟踪区域为专用跟踪区域, 则为 UE分配的跟踪区域列表中包含该 专用跟踪区域。
16、 一种移动中继节点(RN )跟踪区域配置及位置更新装置, 包括第四 配置模块、 第五配置模块和更新模块, 其中:
所述第四配置模块设置为: 为作为基站的移动 RN配置专用跟踪区域, 所述专用跟踪区域是专用于移动中继的跟踪区域编码;
所述第五配置模块设置为: 在接入所述移动 RN的终端 (UE ) 注册或者 位置更新时, 为该 UE分配包含该专用跟踪区域的跟踪区域列表;
所述更新模块设置为: 判断移动 RN接入的目标宿主基站( DeNB )的各 小区配置的跟踪区域如果不包含所述移动 RN配置的跟踪区域时, 使所述目 标 DeNB更新移动管理实体 ( MME ) 维护的该 DeNB的跟踪区域信息。
17、 如权利要求 16所述的装置, 其中:
所述更新模块包括信息获取单元、 判断单元和更新单元, 其中: 所述信息获取单元设置为釆用以下方式获知该移动 RN配置的跟踪区域 信息: 在移动 RN切换准备阶段, 从源 DeNB获知该移动 RN配置的跟踪区 域信息; 或者, 在移动 RN建立 S1接口或 X2接口过程中, 从移动 RN获取 该移动 RN的跟踪区域信息;
所述判断模块设置为: 根据信息获取单元获取的信息, 判断移动 RN接 入的目标 DeNB的各小区配置的跟踪区域是否包含所述移动 RN配置的跟踪 区域;
所述更新单元设置为: 在所述判断模块判断移动 RN接入的目标 DeNB 的各小区配置的跟踪区域不包含所述移动 RN配置的跟踪区域时, 使所述目 标 DeNB更新 MME维护的该 DeNB的跟踪区域信息。
18、 如权利要求 16或 17所述的装置, 其中:
所述装置还包括第六配置模块,位于 MME,设置为在所述移动 RN以终 端身份注册时, 釆用以下方式之一为该移动 RN分配跟踪区列表:
根据移动 RN当前接入的宿主基站( DeNB )位置为该移动 RN分配跟踪 区列表; 或者,
为移动 RN分配的跟踪区列表中包含该移动 RN沿途经过的 DeNB各小 区所属的跟踪区域。
19、 如权利要求 18所述的装置, 其中:
所述装置还包括第七配置模块, 设置为为移动 RN 沿途经过并接入的
DeNB配置相同的 MME池或重叠的 MME池。
20、 如权利要求 16所述的装置, 其中: 所述第五配置模块位于 MME,是设置为釆用以下方式为 UE分配包含该 专用跟踪区域的跟踪区域列表:
判断该 UE当前接入的小区的跟踪区域为专用跟踪区域,则为 UE分配的 跟踪区域列表中包含该专用跟踪区域。
21、 一种移动中继节点(RN )跟踪区域配置及位置更新装置, 包括第八 配置模块和第九配置模块, 其中:
所述第八配置模块设置为: 为移动 RN配置与该移动 RN所接入的宿主 基站(DeNB ) 小区相同的跟踪区域;
所述第九配置模块, 位于接入所述移动 RN的终端 (UE ) 的移动管理实 体(MME ) , 设置为: 在所述 UE注册或者位置更新时, 为该 UE分配包含 该 RN沿途经过的各 DeNB小区所属跟踪区域的跟踪区域列表。
22、 如权利要求 21所述的装置, 其中:
所述装置还包括第十配置模块, 位于移动 RN, 设置为: 当移动 RN切换 到目标 DeNB时, 更新移动 RN的跟踪区域配置, 以保证该移动 RN的跟踪 区域与目标 DeNB的跟踪区域一致。
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