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WO2014010787A1 - Procédé de mise à jour de zone de suivi, procédé de mise en phase, et appareil de traitement de signal numérique les prenant en charge - Google Patents

Procédé de mise à jour de zone de suivi, procédé de mise en phase, et appareil de traitement de signal numérique les prenant en charge Download PDF

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Publication number
WO2014010787A1
WO2014010787A1 PCT/KR2012/009112 KR2012009112W WO2014010787A1 WO 2014010787 A1 WO2014010787 A1 WO 2014010787A1 KR 2012009112 W KR2012009112 W KR 2012009112W WO 2014010787 A1 WO2014010787 A1 WO 2014010787A1
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WIPO (PCT)
Prior art keywords
tracking area
terminal
movement
digital signal
signal processing
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Ceased
Application number
PCT/KR2012/009112
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English (en)
Korean (ko)
Inventor
최우진
김현표
정성한
홍성표
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KT Corp
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KT Corp
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Publication of WO2014010787A1 publication Critical patent/WO2014010787A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

Definitions

  • the present invention relates to a tracking area update method, a digital signal processing apparatus and a signal processing system supporting the same.
  • the terminal When the terminal in the idle mode moves out of the tracking area, the terminal transmits a tracking area update (TAU) request message to the base station, and the base station transmits a mobility management object (Mobility).
  • the management entity sends a tracking area update request message to the MME, and the MME updates the tracking area of the terminal.
  • the S-GW Serving Gateway
  • P-GW Packet GateWay
  • the S-GW requests the MME to transmit a paging message.
  • the MME requests all base stations in the tracking area of the terminal to transmit a paging message. Base stations that are requested to transmit a paging message may wirelessly transmit a paging message to find a corresponding terminal.
  • a network environment in which a base station is physically separated into a radio signal processing unit (RU) and a digital signal processing unit (Digital Unit, DU) has been proposed.
  • the RU installed in the service target area performs radio signal processing
  • the DU installed intensively in the national company performs digital signal processing.
  • the technical problem to be solved by the present invention is to provide a tracking area update method, a digital signal processing apparatus and a signal processing system supporting the same.
  • a tracking area update method of a digital signal processing device installed in a service area according to an aspect of the present invention and physically separated from at least one wireless signal processing device processing a wireless signal, and connected to a core system to process a digital signal, Receiving a tracking area update (TAU) request message from a terminal, whether the movement of the terminal is a first movement type that is a movement between a tracking area (TA) managed by the same digital signal processing apparatus; Determining a second movement type, which is a movement between tracking areas managed by different digital signal processing apparatuses, and a tracking area update (TAU) according to the first movement type or the second movement type; ) Performing the procedure differently.
  • TAU tracking area update
  • the performing of the operation may include storing information about a tracking area after the movement of the terminal, and not transmitting a tracking area update request message to a mobility management entity (MME). And transmitting a TAU Accept message to the terminal.
  • MME mobility management entity
  • the performing of the step may include tracking area group (TA group) information to which the tracking area before movement of the terminal belongs from a digital signal processing apparatus managing the tracking area before movement of the terminal.
  • TA group tracking area group
  • the method may include transmitting a tracking area update allowance (TAU Accept) message to the terminal without transmitting the tracking area update request message to the (Mobility Management Entity, MME).
  • TAU Accept tracking area update allowance
  • the performing of the step may include: a tracking area group to which the pre-movement tracking area of the terminal belongs from the digital signal processing apparatus managing the pre-movement tracking area of the terminal that manages the tracking area before the movement of the terminal; Receiving (Tracking Area Group, TA group) information, if the TA group belonging to the tracking area before the movement of the terminal and the TA group belonging to the tracking area after the movement of the terminal is different, the mobility management entity (MME) Transmitting a tracking area update request message including TA group information to which a tracking area belongs after the movement of the terminal, receiving a tracking area update permission message from the MME, and information about the tracking area after the movement of the terminal. Storing the data, and updating the tracking area to the terminal Delivering the permission message.
  • a tracking area group to which the pre-movement tracking area of the terminal belongs from the digital signal processing apparatus managing the pre-movement tracking area of the terminal that manages the tracking area before the movement of the terminal
  • Receiving (Tracking Area Group, TA group) information if
  • the tracking area updating method may further include performing a digital signal processing apparatus managing a tracking area before movement of the terminal and a context release procedure for the terminal.
  • Whether the first movement type or the second movement type may be determined based on tracking area information included in the tracking area update request message.
  • a paging method of a digital signal processing device installed in a service area according to an aspect of the present invention and physically separated from at least one wireless signal processing device for processing a wireless signal, and connected to a core system to process a digital signal.
  • MME Mobility Management Entity
  • TA group tracking area group
  • the mobility management object may participate in a tracking area update (TAU) procedure only when the predetermined terminal is managed by different digital signal processing apparatuses but moves between tracking areas belonging to the same TA group.
  • TAU tracking area update
  • a digital signal processing device installed in a service area according to an aspect of the present invention and physically separated from at least one wireless signal processing device for processing a wireless signal, and connected to a core system to process a digital signal includes a transceiver unit and a processor.
  • the processor may include a tracking area update (TAU) request message from a terminal, and the movement of the terminal may be a movement between a tracking area (TA) managed by the same digital signal processing apparatus.
  • TAU tracking area update
  • Area Update, TAU) procedure is set to perform differently.
  • a digital signal processing device installed in a service area according to an aspect of the present invention and physically separated from at least one wireless signal processing device for processing a wireless signal, and connected to a core system to process a digital signal includes a transceiver unit and a processor. And the processor is requested to transmit a paging message for a predetermined terminal from a mobility management entity (MME) and stores information about a tracking area of the predetermined terminal.
  • MME mobility management entity
  • the mobility management object is configured to transmit a paging message to terminals within an area, and the mobility management object stores information about a tracking area group (TA group) to which a tracking area of the predetermined terminal belongs, and the digital signal processing.
  • the device belongs to the TA group.
  • a tracking area update method suitable for a network environment in which a wireless signal processing device and a digital signal processing device of a base station are separated and operated. Accordingly, the signaling load when updating the tracking area can be reduced, and the paging procedure for the terminal in the idle mode can be simplified.
  • 1 is a general network environment.
  • TAU tracking area update
  • 3 is a network environment according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a method of performing a TAU procedure by a digital signal processing apparatus according to an embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a TAU procedure according to an embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a TAU procedure according to another embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating a TAU procedure according to another embodiment of the present invention.
  • FIG. 8 is a flowchart illustrating a paging method applied when a TAU procedure is performed according to an embodiment of the present invention.
  • FIG 9 illustrates a digital signal processing apparatus that can be applied to an embodiment of the present invention.
  • ... unit described in the specification means a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.
  • a terminal is a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), a user equipment (User Equipment). It may also refer to a user equipment (UE), an access terminal (AT), and the like, and may include all or some functions of a terminal, a mobile station, a mobile terminal, a subscriber station, a portable subscriber station, a user device, an access terminal, and the like.
  • a base station is an access node (AP), a radio access station (RAS), a radio access station (RAS), a node B (Node B), an advanced node B (evolved NodeB, eNodeB), a base transceiver station (Base Transceiver Station, BTS), MMR (Mobile Multihop Relay) -BS, etc.
  • AP access node
  • RAS radio access station
  • RAS radio access station
  • Node B node B
  • an advanced node B evolved NodeB, eNodeB
  • BTS Base Transceiver Station
  • MMR Mobile Multihop Relay
  • FIG. 1 is a general network environment
  • FIG. 2 is a flowchart illustrating an example of a tracking area update (TAU) procedure.
  • TAU tracking area update
  • the base station 100 is wirelessly connected to the terminal 10.
  • the base station 100 assigns a frequency to the terminal 10 and is in charge of all radio related functions including radio bearer control, admission control, mobility control, scheduling, and security.
  • the base station 100 is provided for each cell, for example.
  • the base station 100 connects to a core network including a mobility management entity (MME, 200), a serving gateway (Serving GateWay, S-GW, 300), and a packet gateway (Packet GateWay, P-GW, 400). do.
  • MME mobility management entity
  • S-GW Serving Gateway
  • Packet GateWay Packet GateWay, P-GW, 400
  • the MME 200 is connected to the base station 100 through a wireless channel, manages an idle mode terminal, and selects the S-GW 300 and the P-GW 400.
  • the MME 200 performs roaming and authentication-related functions and processes a bearer signal generated by the terminal 10.
  • the S-GW 300 serves as a mobility anchor when the terminal 10 moves.
  • the P-GW 400 assigns an IP (Internet Protocol) address to the terminal 10, performs packet data related functions of the core network, and the terminal 10 moves between the 3GPP wireless network and the non-3GPP wireless network. If yes, it serves as a mobility anchor.
  • IP Internet Protocol
  • the MME 200 needs to know information about the tracking area after the movement of the terminal 10. If there is a data packet to be transmitted to the terminal 10, it is necessary to request the transmission of the paging message to the base station 100 belonging to the tracking area where the terminal 10 is located.
  • tracking area update procedure will be described when a terminal in tracking area # 1 (TA # 1, 500) moves to tracking area # 2 (TA # 2, 600).
  • the terminal 10 transmits a tracking area update request (TAU request) message to the base station 100 (S200), and the base station 100 transmits the message to the MME 200. (S202).
  • the MME 200 transmits a context request message for requesting context information of the terminal 10 to an old MME to which the terminal 10 has been previously connected (S204), and receives a response thereto (S206). ).
  • the MME 200 transmits a bearer change request (Modify Bearer Request) message requesting a bearer change to the S-GW 300 (S208), and receives a response thereto (S210).
  • a bearer change request Modify Bearer Request
  • the MME 200 transmits an update location request (Update Location Request) message requesting a location update to the home subscriber server (HSS) (S212), and the HSS cancels the location registration of the old MME (S214, S216). ), And transmits a response to the location update (Update Location Ack) to the MME 200 (S218).
  • Update Location Request update location request
  • HSS home subscriber server
  • Update Location Ack response to the location update
  • the MME 200 transmits a TAU Accept message for allowing the tracking area update to the terminal 10 (S220).
  • the MME 200 may request transmission of a paging message to all base stations belonging to the tracking area of the corresponding terminal.
  • Base stations that are requested to transmit a paging message may find a corresponding terminal by transmitting a paging message.
  • a tracking area update procedure needs to be changed.
  • 3 is a network environment according to an embodiment of the present invention.
  • the network environment includes at least one radio unit (RU) 1100, at least one digital unit (DU) 1200, and an MME, S-GW, P.
  • RU radio unit
  • DU digital unit
  • MME MME
  • S-GW Packet Control Function
  • P Packet Control Function
  • a core network 1300 comprising a GW.
  • the RU 1100 processes a radio signal, and converts and amplifies a digital signal received from the DU 1200 into a radio frequency (RF) signal according to a frequency band.
  • RF radio frequency
  • the DU 1200 encrypts or decrypts a wireless digital signal and is connected to the core network 1300.
  • a plurality of RUs 1100 may be connected to the DU 1200.
  • the DU 1200 may be installed at a national office, and the RU 1100 may be installed at a remote location, that is, at a service target area.
  • a plurality of (eg, seven) RUs 1100 are installed in each cell, and one DU 1200 manages RUs 1100 installed in at least one cell.
  • the core network 1300 handles the connection between the DU 1200 and the external network. Since the core network 1300 is similar to the content described with reference to FIG. 1, the redundant description is omitted.
  • the tracking area may be hierarchically managed.
  • Each tracking area TA # 1 to TA # 8 includes a plurality of cells, and each DU (DU # 1 to DU # 4) manages a plurality of tracking areas. And, tracking areas managed by a plurality of DUs can be grouped into one tracking area group.
  • DU # 1 manages TA # 1 and TA # 2
  • DU # 2 manages TA # 3 and TA # 4
  • DU # 3 manages TA # 5 and TA # 6
  • DU # 4 manages TA # 7 and TA # 8.
  • the tracking areas TA # 1, TA # 2, TA # 3, and TA # 4 managed by DU # 1 and DU # 2 are grouped into tracking area group A (TA group A), and DU # 3 and DU Tracking areas TA # 5, TA # 6, TA # 7, and TA # 8 managed by # 4 may be grouped into tracking area group B (TA group B).
  • the MME stores information on a tracking area group for each terminal. For example, when the terminal is located in TA # 1, the MME may store that the terminal is located in TA group A.
  • the terminal When a terminal located in TA # 1 is powered on for the first time, the terminal should register its location information in a core network such as MME or HSS. To this end, the terminal must perform a TAU procedure. At this time, the TAU procedure is similar to the procedure described with reference to FIG. 2.
  • the MME is different from FIG. 2 in that it does not store information about TA # 1 in which the UE is located, but stores information about a tracking area group (TA group A) to which TA # 1 belongs.
  • the MME may further store information on DU # 1 and DU # 2 belonging to TA group A, and may recognize DU # 1 and DU # 2 as one base station.
  • the DU # 1 managing the TA # 1 stores information about the TA # 1 for the corresponding UE.
  • the DU # 1 may further store information about the cell # 1 and the cell # 2 belonging to the TA # 1.
  • the S-GW When a data packet to be transmitted is generated to an idle mode terminal that performs the TAU procedure in TA # 1, the S-GW requests the MME to find the corresponding terminal.
  • the MME checks the location information (TA group A) previously stored for the terminal, and requests transmission of a paging message to DU # 1 and DU # 2 belonging to TA group A.
  • DU # 1 Receiving the request for the transmission of the paging message from the MME, DU # 1 checks the location information (TA # 1) previously stored for the terminal, and the paging message through the cell # 1 and cell # 2 included in TA # 1 send.
  • the terminal may move and leave the tracking area. If the terminal leaves the tracking area, the terminal should perform the TAU procedure again.
  • the TAU procedure is performed differently according to the movement type of the terminal.
  • movement type I movement between tracking areas managed by the same DU
  • movement type II movement between tracking areas belonging to a group
  • movement type III movement between tracking areas belonging to different DUs
  • different TAU procedures may be performed.
  • FIG. 4 is a flowchart illustrating a method of performing a TAU procedure by a digital signal processing apparatus according to an embodiment of the present invention.
  • the DU receives a TAU request message from the terminal (S400).
  • the TAU request message may include a terminal identifier and information on a tracking area last checked by the terminal before movement.
  • the DU determines the movement type of the terminal (S410). That is, it is determined whether the UE moves between tracking areas managed by the same DU or between tracking areas managed by different DUs.
  • the DU When the movement between the tracking areas managed by the same DU (S420), the DU stores the information about the tracking area after the movement of the terminal (S430), and transmits a TAU permission message to the terminal (S440).
  • the DU receives information on the TA group to which the tracking area before movement belongs from the DU managing the tracking area before the movement of the UE (S450).
  • the DU stores information on the tracking area after the movement of the UE (S430) and sends a TAU permission message to the UE. Transmit (S440).
  • the DU performs a TAU procedure with the MME (S470). That is, the DU delivers a TAU request message to the MME, and allows the MME to store information on the TA group to which the tracking area belongs after the UE moves.
  • the DU stores information on the tracking area after the movement of the terminal (S430), and transmits a TAU permission message to the terminal (S440).
  • FIG. 5 is a flowchart illustrating a TAU procedure according to an embodiment of the present invention.
  • a case in which an idle mode terminal moves from TA # 1 managed by DU # 1 to TA # 2 (movement type I) will be described as an example.
  • the terminal transmits a TAU request message to DU # 1 (S500).
  • the TAU request message may include information on the tracking area TA # 1 before the movement of the terminal and the terminal identifier.
  • the tracking area before the movement of the terminal may be a tracking area checked when the terminal performs the last TAU procedure. Accordingly, the DU # 1 identifies the movement type I (S510), and stores information (TA # 2 including the cell # 3 and the cell # 4) of the tracking area after the movement of the UE (S520).
  • the DU # 1 transmits a TAU Accept message to the UE (S530).
  • a signaling procedure between the DU, the MME, the S-GW, the P-GW, and the HSS may be omitted.
  • FIG. 6 is a flowchart illustrating a TAU procedure according to another embodiment of the present invention.
  • a case in which the UE in the idle mode moves from TA # 2 managed by DU # 1 to TA # 3 managed by DU # 2 (movement type II) will be described as an example.
  • the terminal transmits a TAU request message to DU # 2 (S600).
  • the TAU request message may include information on the tracking area TA # 2 and the terminal identifier before the movement of the terminal.
  • the tracking area before the movement of the terminal may be a tracking area checked when the terminal performs the last TAU procedure.
  • the DU # 2 determines the movement between the tracking areas managed by different DUs (S610), and the context request for requesting context information of the UE from the DU # 1 in which the UE performed the TAU procedure last time (Context Request).
  • the message is transmitted (S620).
  • the context request message may include a TAU request message transmitted by the UE to DU # 2.
  • the DU # 1 After DU # 1 verifies the authenticity of the TAU request message transmitted from the UE to DU # 2, the DU # 1 sends a context response message including context information of the UE and TA group information known by the MME to the UE. Transfer to # 2 (S630).
  • the context information of the terminal may include a quality of service (QoS), a security key, and the like.
  • the DU # 2 determines that the movement of the UE corresponds to the movement type II by using TA group information (for example, TA group A including DU # 1 and DU # 2) that the MME knows about the UE (S640). .
  • TA group information for example, TA group A including DU # 1 and DU # 2 that the MME knows about the UE (S640).
  • the DU # 2 stores information about the tracking area after the movement of the terminal (TA # 3 including the cell # 5 and the cell # 6) (S650).
  • the DU # 2 transmits a TAU Accept message to the UE (S660), and performs a context release procedure with the DU # 1 so that the DU # 1 deletes the context information for the UE (S670, S680). ).
  • the signaling procedure between the DU, the MME, the S-GW, the P-GW, and the HSS may be omitted.
  • FIG. 7 is a flowchart illustrating a TAU procedure according to another embodiment of the present invention.
  • a case in which an idle mode UE moves from TA # 4 managed by DU # 2 to TA # 5 managed by DU # 3 (movement type III) will be described as an example.
  • the terminal transmits a TAU request message to DU # 3 (S700).
  • the TAU request message may include information about the tracking area TA # 4 and the terminal identifier before the movement of the terminal.
  • the tracking area before the movement of the terminal may be a tracking area checked when the terminal performs the last TAU procedure.
  • the DU # 3 determines the movement between the tracking areas managed by different DUs (S702), and the context request for requesting context information of the UE from the DU # 2 on which the UE last performed the TAU procedure.
  • the message is transmitted (S704).
  • the context request message may include a TAU request message transmitted by the UE to DU # 3.
  • the DU # 2 After DU # 2 verifies the authenticity of the TAU request message transmitted by the UE to DU # 3, the DU # 2 sends a context response message including context information of the UE and TA group information that the MME knows about the UE. Transfer to # 3 (S706).
  • the context information of the terminal may include a quality of service (QoS), a security key, and the like.
  • DU # 3 determines that the movement of the UE corresponds to the movement type III by using TA group information (eg, TA group A including DU # 1 and DU # 2) that the MME knows about the UE (S708). .
  • TA group information eg, TA group A including DU # 1 and DU # 2 that the MME knows about the UE (S708).
  • DU # 3 transmits a TAU request message to the MME (S710), the MME performs a signaling procedure for the TAU with the S-GW, P-GW, HSS and the like (S712), and the information about the tracking area after the movement of the UE ( For example, TA group B) including DU # 3 and DU # 4 is updated (S714).
  • the DU # 3 When the DU # 3 receives the TAU permission message from the MME (S716), the DU # 3 stores information about the tracking area after the UE moves (eg, TA # 5 including the cell # 9 and the cell # 10) and ( S718), and transmits a TAU permission message to the terminal (S720).
  • the DU # 3 stores information about the tracking area after the UE moves (eg, TA # 5 including the cell # 9 and the cell # 10) and ( S718), and transmits a TAU permission message to the terminal (S720).
  • the DU # 3 performs a context release procedure with the DU # 2 so that the DU # 2 deletes the context information for the corresponding UE (S722 and S724).
  • a procedure in which DU # 3 delivers a TAU request message to the MME and a signaling procedure (S710 to S716) for the MME to S-GW, P-GW, HSS, etc. are similar to the TAU procedure of FIG. 2.
  • the MME is different from FIG. 2 in that the MME does not store information about the tracking area TA # 5 where the terminal is located, but stores information about the tracking area group (TA group B) to which TA # 5 belongs. have.
  • the TAU request message is transmitted to the MME only when the UE is in the mobile type III. Accordingly, the signaling procedure in the TAU can be simplified.
  • FIG. 8 is a flowchart illustrating a paging method applied when a TAU procedure is performed according to an embodiment of the present invention.
  • the S-GW requests the MME to find the corresponding terminal (S800).
  • the MME retrieves information about a tracking area group (TA group) stored for the terminal (S810). If the TA group information for the terminal is found to be TA group #Z including DU #X and DU #Y, the MME requests DU #X and DU #Y to transmit a paging message to the terminal (S820, S830).
  • TA group a tracking area group
  • S810 the MME retrieves information about a tracking area group (TA group) stored for the terminal (S810). If the TA group information for the terminal is found to be TA group #Z including DU #X and DU #Y, the MME requests DU #X and DU #Y to transmit a paging message to the terminal (S820, S830).
  • the DU storing the tracking area TA information of the corresponding UE among the DU #X and the DU #Y searches for this (S840). If the TA information for the terminal is found to be TA #z including cell #x and cell #y, the DU transmits a paging message to all terminals located in cells #x and cell #y (S850).
  • FIG 9 illustrates a digital signal processing apparatus that can be applied to an embodiment of the present invention.
  • the digital signal processing apparatus 900 includes a processor 910, a memory 920, and a transmission / reception unit 930.
  • the processor 910 may be configured to implement the procedures and / or methods proposed in the present invention.
  • the memory 920 is connected to the processor 910 and stores various information related to the operation of the processor 910.
  • the transmit / receive unit 930 is connected to the processor 910 and transmits and / or receives a signal.
  • the digital signal processing apparatus 900 may have a single antenna or multiple antennas.
  • the embodiments of the present invention described above are not only implemented through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention or a recording medium on which the program is recorded.

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PCT/KR2012/009112 2012-07-10 2012-11-01 Procédé de mise à jour de zone de suivi, procédé de mise en phase, et appareil de traitement de signal numérique les prenant en charge Ceased WO2014010787A1 (fr)

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KR1020120075261A KR101444434B1 (ko) 2012-07-10 2012-07-10 트래킹 영역 업데이트 방법, 페이징 방법 및 이를 지원하는 디지털 신호 처리 장치
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EP3236683A4 (fr) * 2014-12-17 2018-04-11 Samsung Electronics Co., Ltd. Procédé et appareil de réception, par un terminal mobile en mode de repos, d'un service d'extrémité mobile dans un système de communications
US11363413B2 (en) 2017-09-29 2022-06-14 Sony Group Corporation Efficient UE location reporting in cellular networks
CN115914982A (zh) * 2021-08-16 2023-04-04 中国移动通信集团山东有限公司 用于实现sgs接口位置更新的方法、网络侧设备及系统
WO2023143168A1 (fr) * 2022-01-30 2023-08-03 中国移动通信有限公司研究院 Procédé de gestion de mobilité pour terminal, appareil et dispositif

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