WO2021056548A1 - 一种寻呼方法和装置 - Google Patents

一种寻呼方法和装置 Download PDF

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Publication number
WO2021056548A1
WO2021056548A1 PCT/CN2019/109097 CN2019109097W WO2021056548A1 WO 2021056548 A1 WO2021056548 A1 WO 2021056548A1 CN 2019109097 W CN2019109097 W CN 2019109097W WO 2021056548 A1 WO2021056548 A1 WO 2021056548A1
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WO
WIPO (PCT)
Prior art keywords
cell
list
paging
area identifier
area
Prior art date
Application number
PCT/CN2019/109097
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English (en)
French (fr)
Inventor
吴烨丹
耿婷婷
郑黎丽
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980099602.8A priority Critical patent/CN114270967B/zh
Priority to PCT/CN2019/109097 priority patent/WO2021056548A1/zh
Priority to EP19946401.7A priority patent/EP4024975B1/en
Publication of WO2021056548A1 publication Critical patent/WO2021056548A1/zh
Priority to US17/706,061 priority patent/US20220295444A1/en

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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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a paging method and device.
  • Non-terrestrial network is introduced into the 5G (5th-generation) system. It provides seamless coverage for UEs by deploying base stations or part of base station functions on high-altitude platforms or satellites, and high-altitude platforms or satellites are Natural disasters have less impact and can improve the reliability of 5G systems.
  • LEO Low Earth Orbit
  • This application provides a paging method and device, which can reduce the signaling overhead of access network equipment.
  • a paging method including: a first device receives a first paging message, the first paging message includes a first list, wherein the first list includes an area identifier of at least one cell The first device determines the first cell, where the area identifier of the first cell at the first time and the area identifier of the first cell at the second time are not the same, and the first time is the current time, The second time is earlier than the first time; when the area identifier of the first cell at the first time does not belong to the first list, the first device stops paging the first Terminal equipment in a cell.
  • the foregoing first cell is a cell covered by the first device.
  • the cell covered by the first device may be understood to mean that the first device can provide communication services for terminal devices in the cell covered by the first device.
  • the difference between the area identifier of the first cell at the first time and the area identifier of the first cell at the second time may be understood as a change in the area identifier of the first cell within the first time.
  • the first device determines whether the first cell belongs to the first list included in the first paging message by determining the first cell, and when the area identity of the first cell changes, If the area identifier of does not belong to the first list, the first device stops paging the terminal device in the first cell, so that the signaling overhead of the first device can be saved.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • the first list is the TAI list
  • what the first device above receives is the first paging message sent by the first core network device.
  • the terminal device to be paged is in the RRC idle state and the CM idle state.
  • the core network device knows the possible tracking area TA of the terminal device to be paged. Therefore, the paging of the terminal device is initiated by the core network device. Yes, this paging method belongs to CN Paging initiated by the core network.
  • the first device receives the first paging message sent by the fourth device.
  • the terminal device is in the RRC third state and CM_CONNECTED,
  • the fourth device is the last served access network device before the terminal device to be paged enters the RRC third state from the RRC connected state, and before the terminal device to be paged enters the RRC third state from the RRC connected state
  • the last served access network device knows the RNA and/or cell that may exist in the terminal device to be paged. Therefore, the paging of the terminal device is the last served before the terminal device enters the RRC third state from the RRC connected state
  • the paging mode initiated by the access network equipment belongs to the paging RAN Paging initiated by the base station side.
  • the foregoing first paging message may also include an identification of the terminal device, and the identification of the terminal device is the terminal device to be paged.
  • the first device can determine the possible TA of the terminal device to be paged according to the first list in the first paging message, and can determine the terminal device to be paged through the identification of the terminal device in the first paging message, In this way, paging can be initiated to the terminal equipment in the coverage area of the corresponding access network equipment.
  • the method further includes: when the area identifier of the first cell at the first moment belongs to the first list, the first A device pages the terminal device in the first cell.
  • the first device pages the terminal devices in the first cell, so that the first device can effectively page the terminal devices to be paged, Thereby, the signaling overhead and power of the first device can be saved.
  • the first device includes a centralized unit CU, and determining the first cell by the first device includes: the first device receiving the first device sent by the second device A configuration update message, where the first configuration update message is used to indicate the identity of the first cell at the first moment, wherein the second device includes a distributed unit DU; the first device is based on the first A configuration update message determines the first cell.
  • the foregoing first configuration update message may be a DU configuration update (DU configuration update) message.
  • DU configuration update DU configuration update
  • the foregoing first cell is a cell covered by the second device.
  • the cell covered by the second device may be understood to mean that the second device can provide communication services for terminal devices in the cell covered by the second device.
  • the first device including the CU receives the first configuration update message sent by the second device including the DU, and the first device can determine that the area identification of the cell is changed in the first cell, so that the first device can determine whether to pass the first cell To page the terminal equipment in the first cell.
  • the first device stops paging the first cell
  • a terminal device in a cell includes: in a case where the identity of the first cell at the first moment does not belong to the first list, the first device sends first information to the second device, and The first information is used to instruct the second device to stop paging the terminal device in the first cell.
  • the first device when the area identifier of the first cell does not belong to the first list, the first device stops paging the terminal devices in the first cell, so that the signaling overhead and power of the first device can be saved.
  • the first device includes a distributed unit DU, and receiving the first paging message by the first device includes: the first device receives the first paging message sent by the third device. Paging message, wherein the third device includes a CU.
  • the first paging message sent by the third device and received by the first device is sent by the first core network device.
  • the terminal device to be paged is in the RRC idle state and the CM idle state.
  • the core network device knows the possible tracking area TA of the terminal device to be paged. Therefore, the paging of the terminal device is initiated by the core network device. Yes, this paging method belongs to the paging initiated by the core network (CN Paging).
  • the first paging message sent by the third device and received by the first device is sent by the fourth device.
  • the terminal device is in the RRC third state and CM_CONNECTED, where the fourth device is the last served access network device before the terminal device to be paged enters the RRC third state from the RRC connected state.
  • the terminal device that calls from the RRC connected state enters the RRC third state before the last serving access network device knows the RNA and/or cell that the terminal device to be paged may exist. Therefore, the paging of the terminal device is performed by the terminal device.
  • This paging mode is initiated by the last serving access network device before entering the RRC third state from the RRC connected state.
  • This paging mode belongs to the paging initiated by the base station side (RAN Paging).
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • a paging method including: a second device determines a first cell, and the identity of the first cell at a first moment is different from the identity of the first cell at a second moment, and The first moment is the current moment, and the second moment is earlier than the first moment; the second device sends a first configuration update message to the first device, and the first configuration update message is used to indicate the second The identifier of the first cell at the first moment covered by the device, so that the first device determines whether to page the terminal device in the first cell according to the first configuration update message.
  • the second device sends a first configuration update message to the first device, the first configuration update message is used to indicate the identity of the first cell at the first moment, and the area identity of the first cell changes within the first time, thereby In this way, the first device determines whether to page the terminal device in the first cell according to the first configuration update message, so that the signaling overhead and power of the first device can be saved.
  • the method further includes: the second device receiving first information sent by the first device, where the first information is used to indicate the first information
  • the second device stops paging the terminal device in the first cell.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • the first information is carried on the RRC signaling or the first information is carried in the first configuration update confirmation ACK message, thereby saving signaling overhead.
  • a paging method including: a third device sends a first paging message to a first device, the first paging message includes a first list, wherein the first list includes the to-be-paged The area ID of the called terminal device.
  • the third device sends the first paging message to the first device, so that the first device determines whether to page the terminal device to be paged, so that the signaling overhead and power of the first device can be saved.
  • the first list is a tracking area identification TAI list of the terminal device to be paged, and the identification of the first cell is a tracking area code TAC;
  • the first list is a list including an access network area RNA and/or a cell global identity, and the identity of the first cell is an access network area code RANAC and/or a cell global identity.
  • a paging apparatus including: a receiving unit configured to receive a first paging message, the first paging message includes a first list, wherein the first list includes at least one cell A determining unit for determining a first cell, wherein the area identifier of the first cell at the first time and the area identifier of the first cell at the second time are different, and the first time is At the current moment, the second moment is earlier than the first moment; the paging unit is configured to stop paging when the area identifier of the first cell at the first moment does not belong to the first list Call the terminal equipment in the first cell.
  • the first cell is a cell covered by the paging device
  • the cell covered by the paging device is the paging device that can provide communication services for terminal equipment in the cell covered by the paging device.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • the paging unit is further configured to: when the area identifier of the first cell at the first moment belongs to the first list, Paging the terminal equipment in the first cell.
  • a paging device including: a centralized unit CU, configured to receive a first paging message, the first paging message includes a first list, wherein the first list includes at least one The area identifier of the cell; the CU is also used to receive a first configuration update message sent by a second device, the first configuration update message is used to indicate the area identifier of the first cell at the first moment, so
  • the second device includes a distributed unit DU; the CU is further configured to determine the first cell according to the first configuration update message; the area identifier of the first cell at the first moment does not belong to
  • the CU is also used to send first information to the second device, and the first information is used to instruct the second device to stop paging the terminal in the first cell equipment.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • a paging device including: a distributed unit DU, configured to determine a first cell, wherein the area identifier of the first cell at the first time and the first cell at the second time are The area identifiers are different, the first moment is the current moment, and the second moment is earlier than the first moment; the DU is also used to send a first configuration update message to the first device, and the first The configuration update message is used to indicate the area identifier of the first cell at the first moment, the first device includes a centralized unit CU; the DU is also used to receive first information sent by the first device The first information is used to instruct the DU to stop paging the terminal device in the first cell.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • a paging device including a distributed unit DU and a centralized unit CU.
  • the CU is configured to receive a first paging message, and the first paging message includes a first list, wherein: The first list includes the area identifier of at least one cell; the DU is used to determine the first cell, wherein the area identifier of the first cell at the first time and the area of the first cell at the second time The identifiers are not the same, the first moment is the current moment, and the second moment is earlier than the first moment; the CU receives the first configuration update message sent by the DU, and the first configuration update message uses To indicate the area identifier of the first cell at the first moment; the CU is also used to determine the first cell according to the first configuration update message; the first cell at the first moment In the case where the area identifier does not belong to the first list, the CU is also used to send first information to the DU, and the first information is used to instruct the DU to stop pag
  • the above-mentioned first cell is a cell covered by the DU
  • the cell covered by the DU can be understood as a DU that can provide communication services for terminal devices in the cell covered by the DU.
  • the paging device provided in this embodiment of the application includes a DU and a CU.
  • the CU receives the first paging message, the DU determines the first cell, and sends a first configuration update message carrying the area identifier of the first cell at the first moment to CU, so that the CU can send the first information to the DU in the case that the area identifier of the first cell at the first moment does not belong to the first list carried in the first paging message according to the first configuration update message, so that the DU
  • the terminal device in the first cell is stopped from paging, so that the paging device can effectively page the terminal device to be paged, and the signaling overhead and power of the paging device can be saved.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • the first list is the TAI list
  • what the aforementioned CU receives is the first paging message sent by the first core network device.
  • the terminal device to be paged is in the RRC idle state and the CM idle state.
  • the core network device knows the possible tracking area TA of the terminal device to be paged. Therefore, the paging of the terminal device is initiated by the core network device. Yes, this paging method belongs to the paging initiated by the core network (CN Paging).
  • the above-mentioned CU receives the first paging message sent by the fourth device.
  • the terminal device is in the RRC third state and CM_CONNECTED, where The fourth device is the last served access network device before the terminal device to be paged enters the RRC third state from the RRC connected state, and the terminal device to be paged enters the RRC third state from the RRC connected state.
  • the last served access network device knows the possible RNA and/or cell of the terminal device to be paged. Therefore, the paging of the terminal device is the last served access before the terminal device enters the RRC connected state from the RRC connected state to the RRC third state.
  • the paging mode initiated by the network access device belongs to the paging initiated by the base station side (RAN Paging).
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • a paging device including: a centralized unit CU, configured to receive a first paging message, the first paging message includes a first list, wherein the first list includes at least one The area identifier of the cell; the CU sends a first paging message to a second device, and the second device includes a centralized unit DU.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • a paging device including: a distributed unit DU, configured to receive a first paging message sent by a first device, the first paging message including a first list, wherein the first paging message A list includes the area identifier of at least one cell, the first device includes a centralized unit CU; the DU is also used to determine the first cell, where the area identifier of the first cell at the first moment and the second The area identifier of the first cell at the time is different, the first time is the current time, and the second time is earlier than the first time; the area identifier of the first cell at the first time In the case of not belonging to the first list, the DU is also used to stop paging the terminal device in the first cell.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • the DU is further used to: when the area identifier of the first cell at the first moment belongs to the first list, paging The terminal equipment in the first cell.
  • a paging device including a distributed unit DU and a centralized unit CU.
  • the CU is configured to receive a first paging message, and the first paging message includes a first list, wherein:
  • the first list includes the area identifier of at least one cell;
  • the DU is used to receive the first paging message sent by the CU;
  • the DU is also used to determine the first cell, wherein the first time at the first time
  • the area identifier of a cell is different from the area identifier of the first cell at the second time, the first time is the current time, and the second time is earlier than the first time;
  • the DU is also used to stop paging the terminal device in the first cell.
  • the first list is a tracking area identification TAI list, and the area identification of the first cell is a tracking area code TAC; or, the first list is It includes a list of access network area RNA and/or cell global identification, and the area identification of the first cell is the access network area code RANAC and/or the cell global identification.
  • the DU is further used to: when the area identifier of the first cell at the first moment belongs to the first list, paging The terminal equipment in the first cell.
  • this application provides an access network device, including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, so that the access network device executes the method in the first aspect or any possible implementation manner thereof.
  • the access network device of the eleventh aspect may be an access network device.
  • the present application provides a computer-readable storage medium in which computer instructions are stored.
  • the computer instructions When the computer instructions are executed on the computer, the computer executes the first aspect or any of its possible implementations. Methods.
  • this application provides a chip including a processor.
  • the processor is used to read and execute the computer program stored in the memory to execute the method in the first aspect or any possible implementation manner thereof.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip further includes a communication interface.
  • this application provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program code runs on a computer, the computer executes the first aspect or any of its possible implementations. Methods.
  • Fig. 1 is a schematic diagram of an example of a communication system applicable to an embodiment of the present application.
  • Figure 2 is a schematic diagram of the transition relationship between the three RRC states.
  • Figure 3 is a schematic diagram of three TA Lists.
  • Figure 4 is a schematic diagram of the TAC covered by the LEO during the movement of the LEO.
  • Fig. 5 is a schematic diagram of an architecture of a communication system applicable to an embodiment of the present application.
  • Fig. 6 is a schematic diagram of another architecture of a communication system suitable for an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a paging method 200 provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another paging method 300 provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another paging method 400 provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a paging device 500 provided by this application.
  • FIG. 11 is a schematic diagram of a paging device 600 provided by this application.
  • FIG. 12 is a schematic diagram of a paging device 700 provided by this application.
  • FIG. 13 is a schematic diagram of a paging device 800 provided by this application.
  • FIG. 14 is a schematic structural diagram of an access network device provided by this application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • FIG. 1 shows a schematic diagram of a communication system 100 applicable to the method provided in the embodiment of the present application.
  • the communication system 100 may include at least one access network device, such as a base station (gNB) and a satellite station in the 5G system as shown in FIG. 1; the communication system 100 may also include at least one terminal device, such as User equipment (UE) 1 to UE 9 shown in FIG. 1.
  • the access network device and each terminal device can communicate via wireless links.
  • the access network device can send configuration information to the terminal device, and the terminal device can send uplink data to the access network device based on the configuration information; for another example, the access network device can send downlink data to the terminal device. Therefore, the gNB and UE 1 to UE 6 in Fig. 1 can form a communication system; the satellite station and UE 7 to UE 9 in Fig. 1 can also form a communication system.
  • the base station and the satellite station are connected to the core network equipment in different ways, and the base station and the satellite station and the core network equipment can send data to each other. In this architecture, there can be multiple satellite stations or multiple base stations, and the satellite stations can also serve UEs like UE 1 to UE 6. This application does not limit this.
  • Each communication device such as a base station, satellite station, or UE 1 to UE 9, may be configured with multiple antennas, and the multiple antennas may include at least one transmitting antenna for transmitting signals and at least one receiving antenna for receiving signals.
  • each communication device additionally includes a transmitter chain and a receiver chain.
  • Those of ordinary skill in the art can understand that they can all include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers, etc.). , Demodulator, demultiplexer or antenna, etc.). Therefore, the base station and UE 11 to UE 6 can communicate with multiple antenna technology, and the satellite station and UE 7 to UE 9 can communicate with multiple antenna technology.
  • the terminal devices in the communication system 100 may also constitute a communication system.
  • UE 5 can control UE 4 and UE 6 to execute corresponding instructions. This application does not limit this.
  • FIG. 1 is only a simplified schematic diagram of an example for ease of understanding, and the communication system 100 may further include other access network devices or other terminal devices, which are not shown in FIG. 1.
  • the access network device in the wireless communication system may be any device with a wireless transceiver function.
  • This equipment includes but is not limited to: evolved NodeB (eNB or eNodeB), radio network controller (RNC), node B (NodeB, NB), base station controller (BSC) ), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system
  • the access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc. can also be 5G, such as , NR, gNB in the system, or transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of the base station in the 5G system, or it can also be a network that constitutes a gNB or transmission point Nodes, such as baseband unit (BBU), or distributed unit (DU), etc.
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB.
  • CU implements radio resource control (RRC), packet data convergence protocol (PDCP) layer functions
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • DU implements wireless link.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the access network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into the access network equipment in the radio access network (RAN), or the CU can be divided into the access network equipment in the core network (core network, CN). This application does not do this. limited.
  • the terminal equipment in the wireless communication system may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, User terminal, terminal, wireless communication device, user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( The wireless terminal in transportation safety, the wireless terminal in the smart city, the wireless terminal in the smart home, and so on.
  • the embodiments of this application do not limit the application scenarios.
  • the terminal device or the access network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application.
  • the execution subject of the method provided in this embodiment of the present application may be a terminal device or an access network device, or a functional module in the terminal device or the access network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • NTN is a communication scenario in the 5G system. Since traditional terrestrial networks cannot provide seamless coverage for terminal devices, especially in places where base stations cannot be deployed such as the sea, desert, and air, non-terrestrial networks are introduced into 5G systems. In the NTN network, by deploying base stations or some base station functions on high-altitude platforms or satellites to provide seamless coverage for terminal equipment, and the high-altitude platforms or satellites are less affected by natural disasters, the reliability of the 5G system can be improved.
  • terminal devices with long antennas can communicate with base stations deployed on high-altitude platforms or satellites.
  • the high-altitude platforms can be hot air balloons, airplanes, or other aircraft.
  • the satellites may be LEO satellites, medium earth orbit (medium earth orbit, MEO) satellites, geostationary earth orbit (geostationary earth orbit, GEO) satellites, etc.
  • PLMN Public land mobile network
  • the PLMN is generally interconnected with the public switched telephone network (PSTN) to form an entire region or country-scale communication network.
  • PSTN public switched telephone network
  • PLMN is a wireless communication system that tends to face land-based mobile users such as vehicles or walking.
  • the RRC state of the terminal device includes the RRC connected state (RRC_CONNECTED), the RRC deactivated state or the RRC third state (RRC_INACTIVE) and the RRC idle state (RRC_IDLE).
  • Figure 2 shows a schematic diagram of the transition relationship between the three RRC states.
  • the terminal device when the terminal device is in the RRC connection state, the terminal device has established a link with the base station and the core network, and when data arrives at the network, it can be directly transmitted to the terminal device; when the terminal device is in the RRC third state (or RRC deactivated state) ), it means that the terminal equipment has previously established links with the base station and the core network, but the link from the terminal equipment to the base station is released (that is, the terminal equipment changes from the RRC connected state to the RRC third state), although the link is released However, the base station will store the context of the terminal device.
  • the base station can quickly restore the link between the terminal device and the base station (that is, the terminal device changes from the RRC third state to the RRC connected state); when the terminal device is in In the RRC idle state, there is no link between the terminal equipment and the base station and the core network.
  • a link between the terminal equipment and the base station and the core network needs to be established (that is, the terminal equipment changes from the RRC idle state to the RRC connection state).
  • Tracking Area is a concept established by the LTE/NR system for location management of terminal equipment. It is defined as a free movement area where terminal devices do not need to update services.
  • the TA function can be divided into paging management and location update management in order to realize the management of the terminal location.
  • the terminal device informs the core network of its own TA through the tracking area registration.
  • the core network can know the tracking area where the terminal device is located. At the same time, when the terminal device in the RRC idle state needs to be paged, it can page all the cells in the tracking area registered by the terminal device .
  • TA is a cell-level configuration. Multiple cells can be configured with the same TA, and one cell can only belong to one TA.
  • TAI Tracking Area Identity
  • TAI Tracking Area Code
  • TA List Multiple TAs form a TA List (TA List) and are allocated to a UE at the same time.
  • TAU TA Update
  • TA 1 TA 2, TA 3, TA 4, TA 5, and TA 6 form TA List 1
  • TA 4 TA 5, TA 6, TA 7, TA 8, and TA 9 form TA List2
  • TA10, TA11, TA12, TA13, TA14, and TA15 form TA List3.
  • TA List1 can be allocated to terminal device 1.
  • terminal device 1 moves in TA (TA 1, TA 2, TA 3, TA 4, TA 5, or TA 6) in TA List 1, TAU does not need to be executed; TA List 2 can Assigned to terminal device 2.
  • terminal device 2 moves in TA (TA 4, TA 5, TA 6, TA 7, TA 8, or TA 9) in TA List2, it does not need to perform TAU; TA List 3 can be assigned to terminal device 3.
  • the terminal device 3 moves in TA (TA 10, TA 11, TA 12, TA 13, TA 14, or TA 15) in TA List3, there is no need to perform TAU.
  • TAU When a terminal device enters a TA area that is not in the TA List to which it is registered, TAU needs to be performed.
  • the core network reassigns a set of TAs to the terminal device.
  • the newly allocated TA may also include some TAs in the original TA List.
  • terminal device 1 moves to TA 9
  • terminal device 1 enters a TA area that is not in the TA List1 where it is registered.
  • terminal device 1 needs to perform TAU and add TA 9 to TA List1.
  • terminal device 2 when terminal device 2 moves to TA 11, terminal device 2 enters a TA area that is not in TA List2 where it is registered.
  • terminal device 2 needs to perform TAU and add TA 11 to TA List1.
  • terminal equipment will also do TAU regularly to let the core network know the location of the terminal equipment.
  • RNA Access network area
  • RNA is aimed at terminal devices in the third state of RRC (or RRC deactivated state).
  • RRC Radio Resource Control
  • RNA Update RNA Update
  • the terminal device When the terminal device enters the RRC third state, the last serving base station will configure RNA for the terminal device. When the terminal device moves within the RNA range, RNA Update (RNAU) is not required. If the terminal device enters the TA area that is not in the RNA configured for the terminal device by the last serving base station before the terminal device enters the RRC third state, RNAU will be initiated. In addition, the terminal equipment will also periodically perform TAU, so that the last serving base station of the terminal equipment before entering the RRC third state knows the location of the terminal equipment.
  • RNAU RNA Update
  • the terminal device When the terminal device is in the RRC idle state, no link is established between the terminal device and the base station; or, when the terminal device is in the RRC third state, the link established between the terminal device and the base station is released by the base station; at this time, if If there is data or voice to be sent to the terminal device on the network side, the terminal device will be found through a paging message. After receiving the paging message, the terminal device will establish a link with the base station to perform data or voice transmission.
  • CN Paging initiated by CN is for terminal devices in RRC idle state and Connection Manager (CM) idle state.
  • the paging message is based on TA.
  • the paging mode is initiated by the Access and Mobility Management Function (AMF) of the 5G core network.
  • the AMF sends a paging message to all base stations included in the TAI list of the terminal device, and these base stations transparently transmit to All terminal devices connected to their own cell, when they listen to the paging message, the terminal device will check whether it contains its own identity (ID).
  • ID the terminal device will check whether it contains its own identity
  • the terminal device will initiate an RRC establishment request to the base station to connect to the network; if the terminal device's own ID is not included in the paging message, the terminal device will ignore the paging request.
  • the CU determines which DUs the cells contained in the TAI list in the paging message belong to, and then sends the list of cells involved in the paging message to the relevant DUs, and the DUs form a paging message. And send it to all terminal equipment connected to the DU-related cell.
  • the paging (RAN Paging) initiated by the RAN side is for the terminal equipment in the third state of RRC and the connection management state (Connection Manager CONNECTED, CM_CONNECTED), and the paging message is based on RNA.
  • This paging mode is initiated by the last serving base station before the terminal device enters the RRC third state from the RRC connected state, because when the terminal device enters the RRC third state, it cannot be sensed on the AMF side. At this time, the AMF considers The terminal device is still in the RRC connection state, and the AMF will continue to send data to the last serving base station.
  • the base station will configure RNA for the terminal equipment, and the last base station sends the paging message to all base stations in the RANAC list of the terminal equipment, and these base stations transparently transmit it to all terminal equipment connected to their own cell.
  • the terminal device of the paging message will check whether it contains its own identity (ID). If the paging message contains the terminal device's own ID, the terminal device will initiate an RRC establishment request to the base station, and the network Connect; if the terminal device does not have its own ID in the paging message, the terminal device will ignore the paging request.
  • ID its own identity
  • the CU determines which DUs the cells contained in the RAN Paging Area in the paging message belong to, and then sends the list of cells involved in the paging message to the relevant DUs, and the DUs form a paging message , And sent to all terminal equipment connected to the DU-related cell.
  • the orbit of a satellite can be divided into:
  • LEO The orbit height is 160 ⁇ 2000km;
  • Geostationary earth orbit (geostationary earth orbit, GEO): The orbit height is 35786km, and the relative position of the satellite and the earth in this orbit is not affected by the rotation of the earth.
  • low-orbit communication satellites are close to the ground, have short communication delays, and have high data transmission rates.
  • the location of the access network equipment in the traditional terrestrial network is fixed, and when the NG interface connection is established between the access network equipment and the core network equipment, the access network equipment will send the TAC or RANAC it supports to the core Because the location of the access network equipment is fixed, the TAC or RANAC plan supported by each access network device will not change. Each access network device covers each The TAC or RANAC of the cell is unchanged.
  • the access network equipment of LEO in NTN is constantly moving relative to the ground.
  • the geographical location is bound to the TA, that is, when the access network equipment of LEO moves, the TA of the LEO access network equipment will Constantly changing, and the TA of the terminal equipment is unchanged.
  • FIG. 4 it is a schematic diagram of the TAC change of the LEO access network equipment during the movement of the LEO access network equipment.
  • the access network device needs to transmit data with the terminal device 1.
  • the beam emitted by the antenna of the access network device 1 has a coverage area of TAC0 on the ground.
  • the coverage area of the antenna beam on the ground is TAC1.
  • terminal device 1 is in TAC1, and access network device 2 will receive the paging message, and access network device 2 will follow the corresponding cell in TA List1 or RANAC list1.
  • the connected terminal device sends the paging message, where TA List1 or RANAC list1 includes TA1 corresponding to TAC1.
  • TA List1 or RANAC list1 includes TA1 corresponding to TAC1.
  • the beams emitted by the antenna of the access network equipment 1 will cover the area on the ground and the beams emitted by the antenna of the access network equipment 2 will cover the area on the ground. Change occurs, as shown in Figure 4(b).
  • the coverage area of the beam from the antenna of access network device 1 on the ground is TAC1, and that of access network device 2
  • the ground coverage area of the beam emitted by the antenna is TAC2.
  • the access network device 2 sends the paging message according to the terminal device connected to the corresponding cell in TA List2 or RANAC list2, where TA List2 or RANAC list2 includes TAC2 Corresponding TA2, and TA List2 or RANAC list2 does not include TA1 corresponding to TAC1, but terminal device 1 is still in TAC1, and terminal device 1 cannot receive the paging message at all, which will cause the access network device to perform invalid paging. call.
  • the paging message received by the access network device carries two parameters: 1Intended Number of Paging Attempts (Intended Number of Paging Attempts), that is, the number of paging attempts, because the terminal device does not always The paging channel is monitored every moment, and the paging message may be missed due to various reasons. Therefore, the paging is generally set multiple times, for example, 10 times. 2Paging Attempt Count (Paging Attempt Count), that is, the number of paging attempts, that is, each time the access network device sends a paging message, this value is increased by one.
  • 1Intended Number of Paging Attempts Intended Number of Paging Attempts
  • 2Paging Attempt Count Paging Attempt Count
  • Condition 1 The number of paging attempts that have been tried is equal to the expected number of paging attempts;
  • Condition 2 When the RRC state of the terminal device changes, for example, the RRC state of the terminal device changes from the RRC idle state to the RRC connected state; another example, the terminal device The RRC state changes from the RRC idle state to other states.
  • the terminal equipment paging by the access network equipment may no longer be within the coverage area of the beam emitted by its antenna on the ground, so that the terminal equipment cannot receive the paging of the access network equipment at all. Message, will cause the access network equipment to perform invalid paging.
  • the access network equipment will stop paging the terminal equipment, which will increase the access network equipment. The signaling overhead of the equipment and the waste of power of the access network equipment.
  • this application provides a paging method, which can save the signaling overhead and power of the access network equipment.
  • indications may include direct indications and indirect indications, as well as explicit indications and implicit indications.
  • the information indicated by a certain piece of information (the first information as described below) is called the information to be indicated.
  • the information to be indicated can be directly indicated. Instruction information, such as the information to be instructed itself or the index of the information to be instructed, etc.
  • the information to be indicated can also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, it is also possible to realize the indication of specific information by means of the pre-arranged order (for example, stipulated in the agreement) of the various information, thereby reducing the indication overhead to a certain extent.
  • the "core network equipment” involved in the embodiments of this application may be an access and mobility management function (AMF), but is not limited to AMF.
  • AMF access and mobility management function
  • the "access network device” involved in the embodiment of the present application may be a gNB.
  • FIG. 5 is a schematic diagram of an architecture of a communication system suitable for an embodiment of the present application.
  • the satellite carries the payload with the functions of the entire access network equipment.
  • the terminal equipment and the access network equipment are connected through a wireless U U port, and the access network equipment establishes a wireless feedback link with the CN through the ground NTN gateway.
  • the Uu port is also called NR-Uu.
  • the N 6 interface shown in FIG. 5 is the interface between the CN and the data network.
  • NG interface is used between CN and NTN gateway.
  • An NG interface based on a satellite radio interface (satelite radio interface, SRI) is used between the NTN gateway and a radio access network (radio access network, RAN).
  • SRI lite radio interface
  • FIG. 6 is a schematic diagram of another architecture of the communication system applicable to the embodiment of the present application.
  • the satellite carries part of the functional load of the access network equipment.
  • satellites can carry DUs, and DUs in the air establish wireless feedback links with CUs through the ground NTN gateway.
  • the SRI-based F1 interface is adopted between the DU and the CU of the access network device, where RRU represents a radio remote unit.
  • FIG. 7 is a schematic flowchart of a paging method 200 provided in this application.
  • a paging method 200 provided by an embodiment of the present application will be described with reference to FIG. 7.
  • the method 200 includes steps 210 to 230.
  • the first device involved in the method 200 may be the satellite in FIG. 5, and the first device carries Load with the functions of the entire access network equipment.
  • Step 210 The first device receives a first paging message, where the first paging message includes a first list, where the first list includes an area identifier of at least one cell.
  • the first paging message may also include the identification of the terminal device, and the identification of the terminal device is the terminal device to be paged.
  • At least one cell is a cell where the terminal device to be paged may exist.
  • At least one cell is a cell where the terminal device to be paged may exist, which can be understood as the terminal device to be paged in the area covered by the at least one cell.
  • the first list is a TAI list; or, the first list is a list including RNA and/or cell global identification.
  • the first device receives the first paging message sent by the first core network device.
  • the terminal device is in the RRC idle state and the CM idle state.
  • the core network device knows the possible TA of the terminal device to be paged. Therefore, the paging of the terminal device is initiated by the core network device. This paging mode Belongs to CN Paging.
  • the first device receives the first paging message sent by the fourth device.
  • the terminal device is in the RRC third state and CM_CONNECTED, where, The fourth device is the last served access network device before the terminal device enters the RRC third state from the RRC connected state, and the terminal device to be paged enters the last served access network device before the RRC connected state enters the RRC third state
  • the network device knows the RNA and/or cell that the terminal device to be paged may have. Therefore, the paging of the terminal device is initiated by the access network device that served the last before the terminal device enters the RRC third state from the RRC connected state.
  • This paging method belongs to RAN Paging.
  • the aforementioned first device may be one or more, and the one or more first devices are all access network devices involved in the area of the terminal device to be paged in the first list.
  • the TA corresponding to the terminal device to be paged is TA List2
  • the TA corresponding to the terminal device to be paged is TA4, TA5, TA6, TA7, TA8, and TA9
  • TA4, TA5 , TA6, TA7, TA8, and TA9 are all in the coverage area of access network device A
  • access network device A is the first device, and at this time, there is one first device.
  • the TA corresponding to the terminal device to be paged is TA List1
  • the TA of the terminal device to be paged is TA1, TA2, TA3, TA4, TA5, and TA6, where TA1 and TA2 In the coverage area of access network equipment 1, TA3, TA4 and TA5 are in the coverage area of access network equipment 2, and TA6 is in the coverage area of access network equipment 3.
  • the networked devices 3 are all the first devices. At this time, there are three first devices.
  • each first device will execute each step included in the method 200.
  • Step 220 The first device determines the first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, the first time is the current time, and the second time is earlier than the second time.
  • the area identifier of the first cell is TAC; or, the area identifier of the first cell is RANAC and/or cell global identity.
  • the area identifier of the first cell is TAC.
  • the area identification of the first cell is RANAC and/or cell global identification.
  • the difference between the area identifier of the first cell at the first time and the area identifier of the first cell at the second time can be understood as the area identifier of the first cell changes within the first time, and the first time is from the first time to the first time. The time between the second moment.
  • the first cell may be a cell covered by the first device, and the area identifier of the first cell at the first time and the area identifier of the first cell at the second time are different from one or more cells.
  • the cells covered by the first device are cell 1, cell 2, and cell 3.
  • the TAC corresponding to cell 1 is TAC 1
  • the TAC corresponding to cell 2 is TAC 2
  • the TAC corresponding to cell 3 is TAC 3.
  • the TAC corresponding to cell 1 is TAC 1
  • the TAC corresponding to cell 2 is TAC 2
  • the TAC corresponding to cell 3 is TAC 4.
  • the TAC corresponding to cell 3 at the first moment corresponds to cell 3 at the second moment
  • the TAC of cell 3 is different, that is, the TAC of cell 3 changes between the first moment and the second moment.
  • cell 3 is the first cell, that is, there is one first cell.
  • the cells covered by the first device are cell a, cell b, and cell c.
  • the TAC corresponding to cell a is TAC a
  • the TAC corresponding to cell b is TAC b
  • the TAC corresponding to cell c is TAC c
  • the TAC corresponding to cell a is TAC a
  • the TAC corresponding to cell b is TAC c
  • the TAC corresponding to cell c is TAC d
  • the TAC corresponding to cell b at the first moment is the same as cell b at the second moment
  • the corresponding TACs are not the same, and the TAC corresponding to cell c at the first moment is different from the TAC corresponding to cell c at the second moment, that is, the TAC of cell b occurs in cell b between the first moment and the second moment.
  • the TAC of cell c changes between the first moment and the second moment.
  • both cell b and cell c are the first cell, that is, there are two first cells. .
  • the above-mentioned cell covered by the first device may be understood as the first device that can provide communication services for terminal devices in the cell covered by the first device.
  • the cells covered by the first device are cell 1, cell 2, and cell 3.
  • the terminal equipment in cell 1 includes terminal equipment 1 and terminal equipment 2; the terminal equipment in cell 2 includes terminal equipment 3; the terminal equipment in cell 3 Including terminal equipment 4, terminal equipment 5 and terminal equipment 6.
  • the first device can provide communication services for terminal devices in the cell covered by the first device, that is, the first device can provide communication services for terminal device 1 and terminal device 2 in cell 1, and the first device can also be a terminal in cell 2.
  • the device 3 provides communication services, and the first device may also provide communication services for the terminal device 4 and the terminal device 5 in the cell 3.
  • Step 230 When the area identifier of the first cell at the first moment does not belong to the first list, the first device stops paging the terminal device in the first cell.
  • the first device stops paging the terminal devices in the first cell, that is, the first device stops sending the first cell to the terminal devices in the first cell through the first cell. Paging message.
  • the first device determines whether the identity of the first cell at the first moment belongs to the first list, and the area identity of the first cell at the first moment does not belong to the first list. In the case of the list, the first device stops paging the terminal devices in the first cell; in the case where the area identifier of the first cell at the first moment belongs to the first list, the first device pages the terminal devices in the first cell , Where, in the case that the area identifier of the first cell belongs to the first list, the first device pages the terminal devices in the first cell, that is, the first device sends the first paging message to the first cell through the first cell The terminal equipment inside.
  • the TA of the terminal device to be paged is TA List2
  • the TA of the terminal device to be paged is TA4, TA5, TA6, TA7, TA8, and TA9, where TA4, TA5, TA6 , TA7, TA8, and TA9 are all in the coverage area of device A.
  • the first device stops passing The first cell sends the first paging message; if the TA corresponding to the TAC of the first cell of the first device is TA8, the identity of the first cell belongs to the first list, and the first device sends the first paging message through the first cell Sent to terminal equipment in the first cell.
  • the first core network device When the first core network device initiates a paging (the terminal device to be paged is in the RRC idle state), it sends a first paging message to the first device, and the first device determines the cell covered by the first device, that is, the first device. Whether the TAC of a cell belongs to the TAI list of the terminal equipment to be paged, in the case that the TAC of the first cell belongs to the first list, the first device sends the first paging message to the first cell in the first cell Terminal equipment; in the case that the TAC of the first cell does not belong to the first list, the first device stops sending the first paging message through the first cell, so that the signaling overhead and power of the first device can be saved.
  • the fourth device When the fourth device (the fourth device is the last served access network device before the terminal device enters the RRC third state from the RRC connected state) initiates a paging, it will send a first paging message to the first device.
  • a device judges the cell covered by the first device, that is, whether the RANAC of the first cell belongs to the RNA list of the terminal device to be paged. In the case that the RANAC of the first cell belongs to the first list, the first device passes the first cell Send the first paging message to the terminal device in the first cell; in the case that the RANAC of the first cell does not belong to the first list, the first device stops sending the first paging message through the first cell, which can save the time The signaling overhead of a device.
  • FIG. 8 is a schematic flowchart of a paging method 300 provided in this application.
  • the paging method 300 provided by the embodiment of the present application will be described with reference to FIG. 8.
  • the method 300 includes step 310 to step 350.
  • the DU involved in the method 300 may be the DU carried by the satellite in FIG. 6, and the CU is shown in FIG. 6. CU set on the ground in the middle.
  • Step 310 The CU obtains a first paging message, where the first paging message includes a first list, where the first list includes an area identifier of at least one cell.
  • the first paging message may also include the identification of the terminal device to be paged.
  • At least one cell is a cell where the terminal device to be paged may exist.
  • At least one cell is a cell where the terminal device to be paged may exist, which may be understood as the terminal device to be paged in an area covered by at least one cell.
  • the first list is a TAI list; or, the first list is an RNA list.
  • the CU When the first list is the TAI list, the CU receives the first paging message sent by the first core network device. At this time, the terminal device is in the RRC idle state and the CM idle state, and the core network device knows the TA where the terminal device to be paged is located. Therefore, the paging of the terminal device is initiated by the core network device, and the paging mode belongs to CN Paging.
  • the CU receives the first paging message sent by the fourth device.
  • the terminal device is in the RRC third state and CM_CONNECTED.
  • the fourth device is the last served access network device before the terminal device enters the RRC third state from the RRC connected state, and the last served access network device before the terminal device to be paged enters the RRC third state from the RRC connected state Know the RNA and/or cell where the terminal device to be paged is located. Therefore, the paging of the terminal device is initiated by the last served access network device before the terminal device enters the RRC third state from the RRC connected state.
  • the calling method belongs to RAN Paging.
  • the aforementioned CU may be one or more, and the one or more CUs are all access network devices involved in the TA of the terminal device to be paged in the first list.
  • each CU When there are multiple CUs, each CU will execute each step included in the method 300.
  • the above-mentioned first paging message may further include an identification of the terminal device, and the identification of the terminal device is the identification of the terminal device to be paged.
  • the CU After the CU obtains the first paging message, it will determine, according to the first paging message, that the TA of the terminal device to be paged included in the first list in the first paging message is covered by the DU In the cell of the DU, the first paging message is then sent to the corresponding DU, the corresponding DU is reconstituted into the second paging message, and the second paging message is sent to the corresponding cell of the DU, where the second paging message includes the The list of cells involved in the DU and the identification of the terminal device to be paged.
  • the TA of the terminal device to be paged in the first paging message includes TA 1, TA 2, TA 3, TA 4, TA 5, and TA 6, where TA 1 and TA 2 are in cell 1, and TA 3 is in In cell 2, TA 4, TA 5, and TA 6 are in cell 3.
  • the DU connected to the CU includes device 1, device 2, device 3, and device 4.
  • device 1 covers both cell 1 and cell 2
  • device 3 covers cell 3
  • CU sends cell list 1 to device 1 and cell list 1 includes cell 1 and cell 2.
  • CU will also send cell list 2 to device 3, and cell list 2 includes cell 3.
  • device 1 will form a second paging message after receiving cell list 1, and send the second paging message to each cell in cell list 1 according to cell list 1.
  • device 3 will receive cell list 2. Then, a second paging message is formed, and the second paging message is sent to each cell in the cell list 2 according to the cell list 2; the second paging message includes the identification of the terminal device to be paged.
  • Step 320 The DU determines the first cell.
  • the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time.
  • the first time is the current time, and the second time is earlier than the first time.
  • the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time. It can be understood that the area identifier of the first cell changes within the first time, and the first time is from the first time to the first time. The time between two moments.
  • the area identifier of the first cell is TAC; or, the area identifier of the first cell is RANAC and/or cell global identity.
  • the area identifier of the first cell is TAC; or, when the first list is a list including RNA and/or cell global identifiers, the first cell is The area identifier of is RANAC and/or cell global identifier.
  • the above-mentioned first cell is a cell covered by the DU, and the area identifier of the first cell at the first time and the area identifier of the first cell at the second time are different from one or more cells.
  • the above-mentioned cell covered by the DU can be understood as the DU can provide communication services for terminal devices in the cell covered by the DU.
  • the covered cell is cell 1
  • the corresponding TAC of this cell 1 is TAC1.
  • the area covered by the DU on the ground will continue to change.
  • the DU is at t 1
  • the t 0 is earlier than t 1
  • the covered cell is cell 1
  • the corresponding TAC of cell 1 is TAC 2, that is, the DU can determine that cell 1 is the first cell.
  • the covered cell is cell 2
  • the RANAC corresponding to cell 2 is RANAC1.
  • the area covered by the DU on the ground will continue to change.
  • the DU is at t 1
  • the covered cell is cell 2
  • the RANAC corresponding to cell 2 is RANAC 2
  • the DU can determine that cell 2 is the first cell.
  • the foregoing first cell may be one or more cells in a cell covered by the DU, and the identity of the first cell at the first moment and the identity of the first cell at the second moment are different.
  • Step 330 The CU receives the first configuration update message sent by the DU, where the first configuration update message is used to indicate the area identity of the first cell at the first moment.
  • the DU sends the first configuration update message to the CU.
  • the DU when the area identity of the cell covered by the DU changes, the DU will send a first configuration update message to the CU.
  • the first configuration update message includes the area identity of the cell whose area identity of the cell covered by the DU has changed.
  • the first configuration update message may be a DU configuration update (DU configuration update) message.
  • DU DU may be transmitted in a first cell to a plurality of CU configuration update message
  • the DU plurality of configuration messages for each DU more configuration update message to the cell indicating the time t 3 3
  • the region ID is any time, and the area identifiers of the cell 3 covered by the DU in the first time including time t 3 are different.
  • Step 340 The CU determines the first cell according to the first configuration update message.
  • the CU can determine which of the cells covered by the DU has changed its area identity.
  • Step 350 When the CU does not belong to the first list at the first moment, the CU sends first information to the DU, where the first information is used to instruct the DU to stop paging the terminal device in the first cell.
  • the CU determines whether the area identity of the first cell at the first moment belongs to the first list; the identity of the first cell at the first moment does not belong to the first list. In this case, the CU prohibits paging the terminal equipment in the first cell; in the case where the area identifier of the first cell at the first moment belongs to the first list, the CU pages the terminal equipment in the first cell.
  • the CU paging the terminal device in the first cell can be understood as the CU sending the first paging message to the DU, and the DU will be reconstituted as the first page.
  • Second paging message and send the second paging message to the terminal device in the first cell through the first cell, and the second paging message includes the identity of the first cell and the identity of the terminal device to be paged, thereby The DU pages the terminal equipment to be paged through the first cell.
  • the CU stops paging the terminal device in the first cell, which can be understood as the CU will not send the above-mentioned first paging message to the DU.
  • the CU sends the first information to the DU, and when the DU receives the first information, it will stop sending the above-mentioned second paging message to the terminal equipment in the first cell.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in the first configuration update confirmation ACK message.
  • the first core network device When the first core network device initiates a paging, it will send a first paging message to the CU, and the CU will receive the first configuration update message sent by the DU to determine whether the DU covers the cell, that is, whether the TAC of the first cell belongs to the to-be-paged If the TAI list of the terminal equipment in the first cell belongs to the first list, the CU sends the first paging message to the DU, and the DU reconstitutes the second paging message, and the DU sends the second paging message through the first cell. The paging message is sent to the terminal equipment in the first cell; in the case that the TAC of the first cell does not belong to the first list, the CU sends the first information to the DU.
  • the first information is used to instruct the DU to stop paging the terminal equipment in the first cell.
  • the terminal device that is, the DU will not send the second paging message to the terminal device in the first cell, so that the signaling overhead and power of the CU can be saved.
  • the fourth device When the fourth device (the fourth device is the last served access network device before the terminal device enters the RRC third state from the RRC connected state) initiates a paging, the first paging message is sent to the CU, and the CU receives the DU The first configuration update message is sent to determine whether the cell covered by the DU, that is, whether the RANAC of the first cell belongs to the RNA list of the terminal equipment to be paged.
  • the CU will be the first The paging message is sent to the DU, and the DU reconstitutes a second paging message, and sends the second paging message to the terminal equipment in the first cell through the first cell; the RANAC in the first cell does not belong to the first list
  • the CU sends the first information to the DU, and the first information is used to instruct the DU to stop paging the terminal equipment in the first cell, that is, the DU will not send the second paging message to the terminal equipment in the first cell, thus The signaling overhead and power of the CU can be saved.
  • FIG. 9 is a schematic flowchart of a paging method 400 provided in the present application.
  • the paging method 400 provided by the embodiment of the present application is described with reference to FIG. 9.
  • the method 400 includes steps 410 to 430.
  • the DU involved in the method 400 may be the DU carried by the satellite in FIG. 6, and the CU is shown in FIG. 6. CU set on the ground in the middle.
  • Step 410 The DU receives a first paging message sent by the CU, where the first paging message includes a first list, where the first list includes the area identifier of at least one cell.
  • the CU sends the first paging message to the DU.
  • the first paging message also includes the identification of the terminal device, and the identification of the terminal device is the identification of the terminal device to be paged.
  • At least one cell is a cell where the terminal device to be paged may exist.
  • At least one cell is a cell where the terminal device to be paged may exist, which may be understood as the terminal device to be paged in an area covered by at least one cell.
  • the first list is a TAI list, and the area identification of the first cell is TAC; or, the first list is an RNA list, and the area identification of the first cell is RANAC and/or a cell global identification.
  • the CU When the first list is the TAI list, the CU receives the first paging message sent by the first core network device, and the CU sends the first paging message to the DU. At this time, the terminal device is in the RRC idle state and the CM idle state, and the core network device knows the TA where the terminal device to be paged is located. Therefore, the paging of the terminal device is initiated by the core network device, and the paging mode belongs to CN Paging.
  • the CU receives the first paging message sent by the fourth device, and the CU sends the first paging message to the DU.
  • the terminal The device is in the RRC third state and CM_CONNECTED, where the fourth device is the last served access network device before the terminal device enters the RRC third state from the RRC connected state, and the terminal device to be paged enters from the RRC connected state
  • the last serving access network device before the RRC third state knows the RNA and/or cell where the terminal device to be paged is located. Therefore, the paging of the terminal device is before the terminal device enters the RRC third state from the RRC connected state
  • the paging method is initiated by the access network device that served last, and belongs to RAN Paging.
  • the above-mentioned DU may be one or more, and the one or more DUs are all access network devices involved in the area of the terminal device to be paged in the first list.
  • each DU will execute each step included in the method 200.
  • Step 420 The DU determines the first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, the first time is the current time, and the second time is earlier than the first time. For a moment.
  • the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time. It can be understood that the area identifier of the first cell changes within the first time, and the first time is from the first time to the first time. The time between two moments.
  • the first cell may be a cell covered by the DU, and the area identifier of the first cell at the first time and the area identifier of the first cell at the second time are different from one or more cells.
  • the above-mentioned cell covered by the DU can be understood as the DU can provide communication services for terminal devices in the cell covered by the DU.
  • the area identifier of the first cell is TAC.
  • the area identification of the first cell is RANAC and/or cell global identification.
  • Step 430 When the area identifier of the first cell does not belong to the first list, the DU stops paging the terminal equipment in the first cell.
  • the DU determines whether the area identifier of the first cell belongs to the first list, and when the area identifier of the first cell does not belong to the first list, the DU stops paging The terminal equipment in the first cell; in the case where the area identifier of the first cell belongs to the first list, the DU pages the terminal equipment in the first cell.
  • the DU paging the terminal device in the first cell can be understood as the DU sending the first paging message to the terminal device in the first cell.
  • the first paging message is sent to the CU, and the CU sends the first paging message to the DU, and the DU passes Determine the cell covered by the DU, that is, whether the TAC of the first cell belongs to the TAI list of the terminal device to be paged. In the case that the TAC of the first cell belongs to the first list, the DU sends the first paging message to the first cell In the case that the TAC of the first cell does not belong to the first list, the DU stops sending the first paging message, so that the signaling overhead and power of the DU can be saved.
  • the fourth device (the fourth device is the last served access network device before the terminal device enters the RRC third state from the RRC connected state) initiates a paging
  • the first paging message is sent to the CU, and the CU Then send the first paging message to the DU, and the DU judges the cell covered by the DU, that is, whether the RANAC of the first cell belongs to the RNA list of the terminal equipment to be paged.
  • the DU sends the first paging message to the terminal equipment in the first cell; in the case that the RANAC of the first cell does not belong to the first list, the DU stops sending the first paging message, thereby saving DU signaling Cost and power.
  • FIGS. 10 to 14 can implement one or more steps in the method flow shown in FIGS. 7-9. In order to avoid repetition, I will not repeat it in detail here.
  • FIG. 10 is a schematic diagram of a paging device 500 provided by this application.
  • the paging device 500 includes a receiving unit 510, a determining unit 520, and a paging unit 530.
  • the apparatus 500 is used to execute various processes and steps corresponding to the first device in the above method 200.
  • the receiving unit 510 is configured to receive a first paging message, where the first paging message includes a first list, where the first list includes an area identifier of at least one cell;
  • the determining unit 520 is configured to determine a first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, and the first time is the current time, The second moment is earlier than the first moment;
  • the paging unit 530 is configured to stop paging the terminal device in the first cell when the area identifier of the first cell at the first moment does not belong to the first list.
  • the first list is a TAI list, and the area identifier of the first cell is TAC; or, the first list is a list including RNA and/or cell global identifiers, and the area of the first cell
  • the identity is RANAC and/or cell global identity.
  • the paging unit 530 is further configured to: when the area identifier of the first cell at the first moment belongs to the first list, page the terminal equipment in the first cell .
  • the above-mentioned paging apparatus 500 may be an access network device, such as the base station 80 below, where the function of the determining unit 520 and the function of the paging unit 530 may be implemented by the processor 8022 in the base station.
  • the function of the receiving unit 510 can be implemented by the RRU 801 of the base station 80.
  • the paging device 600 includes a CU 610.
  • the device 600 may be a first device or a chip in the first device.
  • the device 600 is configured to execute various processes and steps corresponding to the CU in the method 300 described above.
  • the centralized unit CU 610 is configured to receive a first paging message, where the first paging message includes a first list, where the first list includes the area identifier of at least one cell;
  • the CU 610 is further configured to receive a first configuration update message sent by a second device, where the first configuration update message is used to indicate the area identifier of the first cell at the first moment, and the second device Including distributed unit DU;
  • the CU 610 is further configured to determine the first cell according to the first configuration update message
  • the CU is further configured to send first information to the second device, and the first information is used for Instruct the second apparatus to stop paging the terminal equipment in the first cell.
  • the first list is a TAI list, and the area identifier of the first cell is TAC; or, the first list is a list including RNA and/or cell global identifiers, and the area of the first cell
  • the identity is RANAC and/or cell global identity.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • the device 600 is configured to execute various processes and steps corresponding to the CU in the method 400 described above.
  • CU 610 configured to receive a first paging message, where the first paging message includes a first list, where the first list includes the area identifier of at least one cell;
  • the CU 610 sends a first paging message to a second device, and the second device includes a centralized unit DU.
  • the first list is a TAI list, and the area identifier of the first cell is TAC; or, the first list is a list including RNA and/or cell global identifiers, and the area of the first cell
  • the identity is RANAC and/or cell global identity.
  • the above-mentioned paging device 600 may be an access network device, such as the base station 80 below, where the function of the CU 510 may be implemented by the processor 8022 in the base station.
  • FIG. 12 is a schematic diagram of a paging device 700 provided by this application.
  • the second device 700 includes DU 710.
  • the device 700 may be a second device or a chip in the second device.
  • the device 700 is configured to execute each process and step corresponding to the DU in the method 300 described above.
  • DU 710 is used to determine the first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, and the first time is the current time, so Said second moment is earlier than said first moment;
  • the DU 710 is also used to send a first configuration update message to a first device, where the first configuration update message is used to indicate the area identifier of the first cell at the first moment, and the first device includes Centralized unit CU;
  • the DU 710 is also used to receive first information sent by the first device, where the first information is used to instruct the DU to stop paging the terminal equipment in the first cell.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • the device 700 is configured to execute each process and step corresponding to the DU in the method 400 described above.
  • DU 710 configured to receive a first paging message sent by a first device, where the first paging message includes a first list, where the first list includes the area identifier of at least one cell, and the first device includes Centralized unit CU;
  • the DU 710 is also used to determine the first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, and the first time is the current Time, the second time is earlier than the first time; when the area identifier of the first cell at the first time does not belong to the first list, the DU 710 is also used to stop searching Call the terminal equipment in the first cell.
  • the first list is a TAI list, and the area identifier of the first cell is TAC; or, the first list is a list including RNA and/or cell global identifiers, and the area of the first cell
  • the identity is RANAC and/or cell global identity.
  • the DU 710 is further used to: in the case where the area identifier of the first cell at the first moment belongs to the first list, page the terminal device in the first cell.
  • the above-mentioned paging device 700 may be an access network device, such as the base station 80 below, where the function of the DU 710 may be implemented by the BBU 802 in the base station.
  • FIG. 13 is a schematic diagram of a paging device 800 provided by this application.
  • the paging device 800 includes a CU 810 and a DU 820.
  • the DU 820 in the device 800 is used to execute the processes and steps corresponding to the DU in the method 300; the CU 810 in the device 800 is used to execute the processes corresponding to the CU in the method 300 And steps.
  • the CU 810 is configured to receive a first paging message, where the first paging message includes a first list, where the first list includes the area identifier of at least one cell;
  • the DU 820 is used to determine the first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, and the first time is the current time , The second moment is earlier than the first moment;
  • the CU 810 receives a first configuration update message sent by the DU 820, where the first configuration update message is used to indicate the area identifier of the first cell at the first moment;
  • the CU 810 is further configured to determine the first cell according to the first configuration update message
  • the CU810 is further configured to send first information to the DU 820, and the first information is used to indicate The DU 820 stops paging the terminal equipment in the first cell.
  • the first list is a TAI list, and the area identifier of the first cell is TAC; or, the first list is a list including RNA and/or cell global identifiers, and the area identifier of the first cell It is RANAC and/or the global identity of the cell.
  • the first information is carried in radio resource control RRC signaling; or, the first information is carried in a first configuration update confirmation ACK message.
  • the DU 820 in the device 800 is used to execute each process and step corresponding to the DU in the above method 400; the CU 810 in the device 800 is used to execute each corresponding CU in the above method 400 Process and steps.
  • the CU 810 is configured to receive a first paging message, where the first paging message includes a first list, where the first list includes the area identifier of at least one cell;
  • the DU 820 is used to receive the first paging message sent by the CU 810;
  • the DU 820 is also used to determine the first cell, where the area identifier of the first cell at the first time is different from the area identifier of the first cell at the second time, and the first time is the current Time, the second time is earlier than the first time;
  • the DU820 is also used to stop paging the terminal device in the first cell.
  • the first list is a TAI list, and the area identifier of the first cell is TAC; or, the first list is a list including RNA and/or cell global identifiers, and the area of the first cell
  • the identity is RANAC and/or cell global identity.
  • the DU 820 is further configured to: in the case that the area identifier of the first cell at the first moment belongs to the first list, page the terminal device in the first cell.
  • the above-mentioned paging device 800 may be an access network device, such as the base station 80 below, where the function of DU 820 may be implemented by the BBU 802 in the base station; where the function of CU 810 may be implemented by the base station RRU 801 in the implementation.
  • FIG. 14 is a schematic structural diagram of an access network device according to an embodiment of the present application, such as a schematic structural diagram of a base station.
  • the base station 80 can be applied to the system shown in FIG. 1 to perform the functions of the access network device in the foregoing method embodiment.
  • the base station 80 may include one or more radio frequency units, such as a remote radio unit (RRU) 801 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 802.
  • RRU 801 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 8011 and a radio frequency unit 8012.
  • the RRU 801 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals.
  • the 802 part of the BBU is mainly used for baseband processing, control of the base station, and so on.
  • the RRU 801 and the BBU 802 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 802 is the control center of the base station, which may also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 802 may be used to control the base station to execute the operation procedure of the access network device in the foregoing method embodiment.
  • the BBU 802 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) with a single access indication, and may also support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 802 further includes a memory 8021 and a processor 8022, and the memory 8021 is used to store necessary instructions and data.
  • the memory 8021 stores the corresponding relationship between the codebook index and the precoding matrix in the foregoing embodiment.
  • the processor 8022 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the access network device in the foregoing method embodiment.
  • the memory 8021 and the processor 8022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and dedicated integration Circuit (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer is caused to execute as shown in Figs. 7-9 The method of any one of the embodiments.
  • the present application also provides a computer-readable medium, the computer-readable medium stores a program code, when the program code runs on a computer, the computer executes the steps shown in Figs. 7-9 The method of any one of the embodiments.
  • the present application also provides a chip system including a processor, which is used to call and run a computer program from a memory, so that the communication device installed with the chip system executes FIG. 7- The method of any one of the embodiments shown in 9.
  • the foregoing embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or an access network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请提供了一种寻呼方法和装置，该方法包括：第一设备接收第一寻呼消息，第一寻呼消息包括第一列表，其中，第一列表包括至少一个小区的区域标识；第一设备确定第一小区，其中，第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同，第一时刻为当前时刻，第二时刻早于第一时刻；在第一时刻的第一小区的区域标识不属于第一列表的情况下，第一设备停止寻呼第一小区内的终端设备。通过上述技术方案，第一设备可以对终端设备进行有效的寻呼，从而可以节省第一设备的信令开销和电量。

Description

一种寻呼方法和装置 技术领域
本申请涉及无线通信技术领域，尤其涉及一种寻呼方法和装置。
背景技术
由于传统地面网络不能为用户设备(user equipment，UE)提供无缝覆盖，特别是在大海、沙漠、空中等无法部署基站的地方。非陆地网络(non-terrestrial network，NTN)被引入5G(5th-generation)系统中，它通过将基站或者部分基站功能部署在高空平台或者卫星上为UE提供无缝覆盖，并且高空平台或者卫星受自然灾害影响较小，能提升5G系统的可靠性。
在NTN通信中，当基站部署在低地球轨道(Low Earth Orbit，LEO)卫星上时，由于LEO卫星相对于地面会不停地移动，LEO卫星在地面上的覆盖信号的区域会不断发生变化，存在网络想要寻呼的UE并不在LEO卫星在地面上的覆盖信号的区域内，这样在NTN中，LEO卫星的寻呼就变得没意义，浪费空口资源。
发明内容
本申请提供一种寻呼方法和装置，可以降低接入网设备的信令开销。
第一方面，提供了一种寻呼方法，包括：第一设备接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；所述第一设备确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述第一设备停止寻呼所述第一小区内的终端设备。
可选地，上述第一小区为第一设备覆盖的小区。第一设备覆盖的小区可以理解为第一设备可以为第一设备覆盖的小区内的终端设备提供通信服务。
上述第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同可以理解为第一小区的区域标识在第一时间内发生变化。
本申请的技术方案中，第一设备通过确定第一小区，并在第一小区的区域标识发生变化的时候判断第一小区是否属于第一寻呼消息中包括的第一列表，在第一小区的区域标识不属于第一列表的情况下，第一设备停止寻呼第一小区内的终端设备，从而可以节省第一设备的信令开销。
结合第一方面，在第一方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
在第一列表为TAI列表的情况下，上述第一设备接收的是第一核心网设备发送的第一寻呼消息。此时，该待寻呼的终端设备处于RRC空闲态和CM空闲态，核心网设备知道待寻呼的终端设备可能存在的跟踪区TA，因此，该终端设备的寻呼是由核心网设备发起的，该寻呼方式属于核心网发起的寻呼CN Paging。
在第一列表为包括RNA和/或小区全球标识的列表的情况下，第一设备接收的是第四设备发送的第一寻呼消息，此时，该终端设备处于RRC第三态和CM_CONNECTED，其中，该第四设备是该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备，该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备知道待寻呼的终端设备可能存在的RNA和/或小区，因此，该终端设备的寻呼是由终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备发起的，该寻呼方式属于基站侧发起的寻呼RAN Paging。
上述第一寻呼消息中还可以包括终端设备的标识，该终端设备的标识即为待寻呼的终端设备。
第一设备根据第一寻呼消息中的第一列表可以确定待寻呼的终端设备所可能存在的TA，并通过第一寻呼消息中的终端设备的标识可以确定待寻呼的终端设备，从而可以向相应的接入网设备覆盖区域内的终端设备发起寻呼。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，所述第一设备寻呼所述第一小区内的终端设备。
在第一时刻的第一小区的区域标识属于第一列表的情况下，第一设备寻呼第一小区内的终端设备，从而可以第一设备可以对待寻呼的终端设备进行有效的寻呼，从而可以节省第一设备的信令开销和电量。
结合第一方面，在第一方面的某些实现方式中，所述第一设备包括集中式单元CU，以及第一设备确定第一小区包括：所述第一设备接收第二设备发送的第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的标识，其中，所述第二设备包括分布式单元DU；所述第一设备根据所述第一配置更新消息，确定所述第一小区。
可选地，上述第一配置更新消息可以是DU配置更新(DU configuration update)消息。
可选地，上述第一小区为第二设备覆盖的小区。第二设备覆盖的小区可以理解为第二设备可以为第二设备覆盖的小区内的终端设备提供通信服务。
包括CU的第一设备通过接收包括DU的第二设备发送的第一配置更新消息，第一设备可以确定小区的区域标识发生变化的是第一小区，从而以便第一设备确定是否通过第一小区来寻呼第一小区内的终端设备。
结合第一方面，在第一方面的某些实现方式中，在所述第一时刻的第一小区的标识不属于所述第一列表的情况下，所述第一设备停止寻呼所述第一小区内的终端设备，包括：在所述第一时刻的第一小区的标识不属于所述第一列表的情况下，所述第一设备向所述第二设备发送第一信息，所述第一信息用于指示所述第二设备停止寻呼所述第一小区内的终端设备。
本申请的技术方案中，在第一小区的区域标识不属于第一列表的情况下，第一设备停止寻呼第一小区内的终端设备，从而可以节省第一设备的信令开销和电量。
结合第一方面，在第一方面的某些实现方式中，所述第一设备包括分布式单元DU，以及第一设备接收第一寻呼消息包括：第一设备接收第三设备发送的第一寻呼消息，其中，所述第三设备包括CU。
在第一列表为TAI列表的情况下，上述第一设备接收的第三设备发送的第一寻呼消息是由第一核心网设备发送的。此时，该待寻呼的终端设备处于RRC空闲态和CM空闲态，核心网设备知道待寻呼的终端设备可能存在的跟踪区TA，因此，该终端设备的寻呼是由核心网设备发起的，该寻呼方式属于核心网发起的寻呼(CN Paging)。
在第一列表为包括RNA和/或小区全球标识的列表的情况下，上述第一设备接收的第三设备发送的第一寻呼消息是由第四设备发送的。此时，该终端设备处于RRC第三态和CM_CONNECTED，其中，该第四设备是该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备，该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备知道待寻呼的终端设备可能存在的RNA和/或小区，因此，该终端设备的寻呼是由终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备发起的，该寻呼方式属于基站侧发起的寻呼(RAN Paging)。
结合第一方面，在第一方面的某些实现方式中，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
第二方面，提供了一种寻呼方法，包括：第二设备确定第一小区，第一时刻的所述第一小区的标识和第二时刻的所述第一小区的标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；所述第二设备向第一设备发送第一配置更新消息，所述第一配置更新消息用于指示所述第二设备覆盖的所述第一时刻的所述第一小区的标识，以使所述第一设备根据所述第一配置更新消息确定是否寻呼所述第一小区内的终端设备。
第二设备通过向第一设备发送第一配置更新消息，该第一配置更新消息用于指示第一时刻的第一小区的标识，且第一小区的区域标识在第一时间内发生变化，从而以便第一设备根据第一配置更新消息，确定是否寻呼第一小区内的终端设备，从而可以节省第一设备的节省第一设备的信令开销和电量。
结合第二方面，在第二方面的某些实现方式中，所述方法还包括：所述第二设备接收所述第一设备发送的第一信息，所述第一信息用于指示所述第二设备停止寻呼所述第一小区内的终端设备。
结合第二方面，在第二方面的某些实现方式中，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
通过第一信息承载于RRC信令上或者第一信息承载于第一配置更新确认ACK消息中，从而可以节省信令开销。
第三方面，提供了一种寻呼方法，包括：第三设备向第一设备发送第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括待寻呼的终端设备的区域标识。
第三设备将第一寻呼消息发送给第一设备，以便第一设备确定是否对待寻呼的终端设备进行寻呼，从而可以节省第一设备的信令开销和电量。
结合第三方面，在第三方面的某些实现方式中，所述第一列表为所述待寻呼的终端设备的跟踪区标识TAI列表，所述第一小区的标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的标识为接入网区域 代码RANAC和/或小区全球标识。
第四方面，提供了一种寻呼的装置，包括：接收单元，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；确定单元，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；寻呼单元，用于在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，停止寻呼所述第一小区内的终端设备。
可选地，上述第一小区为上述寻呼装置覆盖的小区，寻呼装置覆盖的小区即为该寻呼装置可以为寻呼装置覆盖的小区内的终端设备提供通信服务。
结合第四方面，在第四方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
结合第四方面，在第四方面的某些实现方式中，所述寻呼单元还用于：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
第五方面，提供了一种寻呼装置，包括：集中式单元CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；所述CU，还用于接收第二装置发送的第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识，所述第二装置包括分布式单元DU；所述CU，还用于根据所述第一配置更新消息，确定所述第一小区；在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述CU还用于向所述第二装置发送第一信息，所述第一信息用于指示所述第二装置停止寻呼所述第一小区内的终端设备。
结合第五方面，在第五方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
结合第五方面，在第五方面的某些实现方式中，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
第六方面，提供了一种寻呼装置，包括：分布式单元DU，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；所述DU，还用于向第一装置发送第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识，所述第一装置包括集中式单元CU；所述DU，还用于接收所述第一装置发送的第一信息，所述第一信息用于指示所述DU停止寻呼所述第一小区内的终端设备。
结合第六方面，在第六方面的某些实现方式中，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
第七方面，提供了一种寻呼装置，包括分布式单元DU和集中式单元CU，所述CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少 一个小区的区域标识；所述DU，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；所述CU，接收所述DU发送的第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识；所述CU，还用于根据所述第一配置更新消息，确定第一小区；在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述CU还用于向所述DU发送第一信息，所述第一信息用于指示所述DU停止寻呼所述第一小区内的终端设备。
可选地，上述第一小区是DU覆盖的小区，DU覆盖的小区可以理解为DU可以为DU覆盖的小区内的终端设备提供通信服务。
本申请实施例提供的寻呼装置包括DU和CU，CU接收第一寻呼消息，DU确定第一小区，并将携带有第一时刻的第一小区的区域标识的第一配置更新消息发送给CU，从而CU可以根据第一配置更新消息，在第一时刻的第一小区的区域标识不属于第一寻呼消息中携带的第一列表的情况下，CU向DU发送第一信息，从而DU根据第一消息，停止寻呼第一小区内的终端设备，从而可以实现上述寻呼装置对待寻呼的终端设备进行有效地寻呼，节省了上述寻呼装置的信令开销和电量。
结合第七方面，在第七方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
在第一列表为TAI列表的情况下，上述CU接收的是第一核心网设备发送的第一寻呼消息。此时，该待寻呼的终端设备处于RRC空闲态和CM空闲态，核心网设备知道待寻呼的终端设备可能存在的跟踪区TA，因此，该终端设备的寻呼是由核心网设备发起的，该寻呼方式属于核心网发起的寻呼(CN Paging)。
在第一列表为包括RNA和/或小区全球标识的列表的情况下，上述CU接收的是第四设备发送的第一寻呼消息，此时，该终端设备处于RRC第三态和CM_CONNECTED，其中，该第四设备是该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备，该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备知道待寻呼的终端设备可能存在的RNA和/或小区，因此，该终端设备的寻呼是由终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备发起的，该寻呼方式属于基站侧发起的寻呼(RAN Paging)。
结合第七方面，在第七方面的某些实现方式中，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
第八方面，提供了一种寻呼装置，包括：集中式单元CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；所述CU向第二装置发送第一寻呼消息，所述第二装置包括集中式单元DU。
结合第八方面，在第八方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
第九方面，提供了一种寻呼装置，包括：分布式单元DU，用于接收第一装置发送的第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识，所述第一装置包括集中式单元CU；所述DU，还用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述DU还用于停止寻呼所述第一小区内的终端设备。
结合第九方面，在第九方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
结合第九方面，在第九方面的某些实现方式中，所述DU还用于：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
第十方面，提供了一种寻呼装置，包括分布式单元DU和集中式单元CU，所述CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；所述DU，用于接收CU发送的第一寻呼消息；所述DU，还用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述DU还用于停止寻呼所述第一小区内的终端设备。
结合第十方面，在第十方面的某些实现方式中，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；或者，所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
结合第十方面，在第十方面的某些实现方式中，所述DU还用于：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
第十一方面，本申请提供一种接入网设备，包括处理器和存储器。存储器用于存储计算机程序，处理器用于调用并运行存储器中存储的计算机程序，使得接入网设备执行第一方面或其任意可能的实现方式中的方法。
这里，第十一方面的接入网设备可以为接入网设备。
第十二方面，本申请提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得计算机执行第一方面或其任意可能的实现方式中的方法。
第十三方面，本申请提供一种芯片，包括处理器。处理器用于读取并执行存储器中存储的计算机程序，以执行第一方面或其任意可能的实现方式中的方法。
可选地，所述芯片还包括存储器，存储器与处理器通过电路或电线与存储器连接。
进一步可选地，所述芯片还包括通信接口。
第十四方面，本申请提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行第一方面或其任意可能 的实现方式中的方法。
附图说明
图1是适用于本申请实施例的通信系统的一例示意图。
图2是RRC三种状态的转换关系示意图。
图3是3个TA List的示意图。
图4是一种LEO运动过程中LEO覆盖的TAC的示意图。
图5是适用于本申请实施例的通信系统的一种架构的示意图。
图6是适用于本申请实施例的通信系统的另一种架构的示意图。
图7是本申请实施例提供的一种寻呼方法200的示意性流程图。
图8是本申请实施例提供的另一种寻呼方法300的示意性流程图。
图9是本申请实施例提供的又一种寻呼方法400的示意性流程图。
图10为本申请提供的寻呼装置500的示意图。
图11为本申请提供的寻呼装置600的示意图。
图12为本申请提供的寻呼装置700的示意图。
图13为本申请提供的寻呼装置800的示意图。
图14为本申请提供的接入网设备的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等。
为便于理解本申请实施例，首先结合图1详细说明适用于本申请实施例提供的方法的通信系统。图1示出了适用于本申请实施例提供的方法的通信系统100的示意图。如图所示，该通信系统100可以包括至少一个接入网设备，如图1中所示的5G系统中的基站(gNB)和卫星站；该通信系统100还可以包括至少一个终端设备，如图1中所示的用户设备(user equipment，UE)1至UE 9。接入网设备与各终端设备之间可以通过无线链路通信。例如，接入网设备可以向终端设备发送配置信息，终端设备可以基于该配置信息向接入网设备发送上行数据；又例如，接入网设备可以向终端设备发送下行数据。因此，图1中的gNB和UE 1至UE 6可以构成一个通信系统；图1中的卫星站和UE 7至UE 9也可以构成一个通信系统。此外，基站和卫星站通过不同的方式连接到核心网设备，基站和卫星站与核心网设备之间可以进行相互的数据发送。本架构中可以为多个卫星站或者多个基站，卫星站也可以服务类似UE 1至UE 6的UE。本申请对此不作限定。各通信设备， 如基站、卫星站或UE 1至UE 9，可以配置多个天线，该多个天线可以包括至少一个用于发送信号的发射天线和至少一个用于接收信号的接收天线。另外，各通信设备还附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。因此，基站与UE 11至UE 6可通过多天线技术通信，卫星站与UE 7至UE 9可通过多天线技术通信。
该通信系统100中的终端设备，如，UE 4至UE 6，也可以构成一个通信系统。例如，UE 5可以控制UE 4和UE 6执行相应的指令。本申请对此不作限定。
还应理解，图1仅为便于理解而示例的简化示意图，该通信系统100中还可以包括其他接入网设备或者还可以包括其他终端设备，图1中未予以画出。
应理解，该无线通信系统中的接入网设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：演进型节点B(evolved NodeB，eNB或eNodeB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如，NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，例如，CU实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+CU发送的。可以理解的是，接入网设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网(radio access network，RAN)中的接入网设备，也可以将CU划分为核心网(core network，CN)中的接入网设备，本申请对此不做限定。
还应理解，该无线通信系统中的终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端 等等。本申请的实施例对应用场景不做限定。
在本申请实施例中，终端设备或接入网设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或接入网设备，或者，是终端设备或接入网设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
为便于理解本申请实施例，首先对本申请中涉及到的相关技术内容作简单说明。
1、NTN
NTN是5G系统中的一个通信场景。由于传统地面网络不能为终端设备提供无缝覆盖，特别是在大海、沙漠、空中等无法部署基站的地方，非陆地网络被引入5G系统中。在NTN网络中，通过将基站或者部分基站功能部署在高空平台或者卫星上为终端设备提供无缝覆盖，并且高空平台或者卫星受自然灾害影响较小，能够提升5G系统的可靠性。
在NTN网络中，具备长天线的终端设备可以与部署于高空平台或者卫星上的基站进行通信连接，其中，高空平台可以是热气球、飞机或者其它飞行器。而卫星可以是LEO卫星、中地球轨道(medium earth orbit，MEO)卫星或者静止地球轨道(geostationary earth orbit，GEO)卫星等。
2、公共陆地移动网络(public land mobile network，PLMN)
由政府或它所批准的经营者，为公众提供陆地移动通信业务目的而建立和经营的网络。该PLMN一般与公众交换电话网(public swithed telephone network，PSTN)互连，形成整个地区或国家规模的通信网。PLMN是一个无线通讯系统，趋向于面向陆地上的，例如交通工具或步行中的移动用户。
3、无线资源控制(radio resource control，RRC)状态
在5G系统中，终端设备的RRC状态包括RRC连接态(RRC_CONNECTED)、RRC去激活态或者RRC第三态(RRC_INACTIVE)和RRC空闲态(RRC_IDLE)。图2示出了RRC三种状态的转换关系示意图。
其中，终端设备处于RRC连接态时，终端设备与基站以及核心网都已建立链路，当 有数据到达网络时可以直接传送到终端设备；当终端设备处于RRC第三态(或者RRC去激活态)时，表示终端设备之前和基站以及核心网建立过链路，但是终端设备到基站这一段链路被释放了(即终端设备从RRC连接态变换为RRC第三态)，虽然链路被释放了，但是基站会存储终端设备的上下文，当有数据需要传输时，基站可以快速恢复终端设备到基站这段链路(即终端设备从RRC第三态变换为RRC连接态)；当终端设备处于RRC空闲态时，终端设备和基站以及核心网之间都没有链路，当有数据需要传输时，需要建立终端设备到基站及核心网的链路(即终端设备从RRC空闲态变换为RRC连接态)。
4、跟踪区(Tracking Area，TA)
跟踪区(Tracking Area)是LTE/NR系统为终端设备的位置管理设立的概念。其被定义为终端设备不需要更新服务的自由移动区域。TA功能为实现对终端位置的管理，可分为寻呼管理和位置更新管理。终端设备通过跟踪区注册告知核心网自己的TA。
当终端设备处于RRC空闲态时，核心网络能够知道终端设备所在的跟踪区，同时当处于RRC空闲态的终端设备需要被寻呼时，可以在终端设备所注册的跟踪区的所有小区进行寻呼。
TA是小区级的配置，多个小区可以配置相同的TA，且一个小区只能属于一个TA。
跟踪区标识(Tracking Area Identity，TAI)是由PLMN和跟踪区代码(Tracking Area Code，TAC)组成，即TAI＝PLMN+TAC。
多个TA组成一个TA列表(TA List)，同时分配给一个UE，UE在该TA列表内移动时不需要执行TA更新(TA Update，TAU)，以减少与网络的频繁交互。例如，如图3所示，TA 1、TA 2、TA 3、TA 4、TA 5和TA 6组成了TA List1，TA 4、TA 5、TA 6、TA 7、TA 8和TA 9组成了TA List2，TA 10、TA 11、TA 12、TA 13、TA 14和TA 15组成了TA List3。其中，TA List1可以分配给终端设备1，当终端设备1在TA List1内的TA(TA 1、TA 2、TA 3、TA 4、TA 5或TA 6)移动时不需要执行TAU；TA List2可以分配给终端设备2，当终端设备2在TA List2内的TA(TA 4、TA 5、TA 6、TA 7、TA 8或TA 9)移动时不需要执行TAU；TA List3可以分配给终端设备3，当终端设备3在TA List3内的TA(TA 10、TA 11、TA 12、TA 13、TA 14或TA 15)移动时不需要执行TAU。
当终端设备进入不在其所注册的TA List中的TA区域时，需要执行TAU，核心网给终端设备重新分配一组TA，新分配的TA也可包含原有TA List中的一些TA。如图3所示，例如，当终端设备1移动到TA 9时，终端设备1进入了不在其注册的TA List1中的TA区域，此时，终端设备1需要执行TAU，将TA 9添加到TA List1中。又例如，当终端设备2移动到TA 11时，终端设备2进入了不在其注册的TA List2中的TA区域，此时，终端设备2需要执行TAU，将TA 11添加到TA List1中。除此之外，终端设备还会定期做TAU，让核心网知道终端设备的位置。
5、接入网区域(RAN-Based Notification Area，RNA)
与TA的比较类似的概念，RNA针对的是RRC第三态(或者RRC去激活态)的终端设备。RNA的组成由两种选择：
A、小区列表(list of cells)；
B、接入网区域列表(list of RAN Area)，每个RNA由部分或者全部的TA组成。
当终端设备在进入RRC第三态之前的最后服务基站会给终端设备配置RNA，当终端 设备在RNA范围内移动的时候，不需要做RNA更新(RNA Update，RNAU)。如果终端设备进入不在终端设备在进入RRC第三态之前的最后服务基站给终端设备配置的RNA中的TA区域时，就会发起RNAU。除此之外，终端设备也会定期做TAU，让终端设备在进入RRC第三态之前的最后服务基站知道终端设备的位置。
6、寻呼(Paging)
当终端设备处于RRC空闲态时，终端设备与基站之间没有建立链路；或者，终端设备处于RRC第三态时，终端设备与基站之间建立的链路被基站释放了；此时，如果网络侧有数据或者语音要发送给终端设备，就会通过寻呼消息来找到该终端设备，该终端设备收到寻呼消息后，就会与基站建立链路，从而进行数据或者语音传输。
具体地，寻呼分为两种：
(1)CN发起的寻呼(CN Paging)，是针对处于RRC空闲态和连接管理(Connection Manager，CM)空闲态的终端设备，该寻呼消息是基于TA。该寻呼方式是由5G核心网的接入与移动管理功能(Access and Mobility Management Function，AMF)发起，AMF发送寻呼消息给终端设备的TAI list中所有包含的基站，这些基站再透传给与自己相关的小区相连的所有的终端设备，当监听到该寻呼消息的终端设备会查看其中是否含有自己的标识(Identity，ID)，如果该寻呼消息中有该终端设备自己的ID的情况下，该终端设备会向该基站发起RRC建立请求，和网络进行连接；如果该寻呼消息中没有该终端设备自己的ID的情况下，该终端设备会忽略该寻呼请求。
在CU-DU架构中，CU来判断寻呼消息中TAI list所包含的小区属于哪些DU下的哪些小区，再把寻呼消息涉及的小区列表发给相关的DU，让DU组成寻呼消息，并发送给与DU相关的小区相连的所有的终端设备。
(2)RAN侧发起的寻呼(RAN Paging)，是针对处于RRC第三态和连接管理连接态(Connection Manager CONNECTED，CM_CONNECTED)的终端设备，该寻呼消息是基于RNA。该寻呼方式是由终端设备从RRC连接态进入RRC第三态之前的最后服务基站发起的，因为终端设备进入到RRC第三态时，在AMF侧是感知不到的，此时，AMF认为该终端设备还是处于RRC连接态，AMF会继续发数据给最后服务基站，但是，最后服务基站与终端设备之间的链路已被释放，最后服务基站找不到该终端设备，但是最后的服务基站会给终端设备配置RNA，最后的基站向终端设备的RANAC list中所有的基站发送该寻呼消息，这些基站再透传给与自己相关的小区相连的所有的终端设备，当监听到该寻呼消息的终端设备会查看其中是否含有自己的标识(Identity，ID)，如果该寻呼消息中有该终端设备自己的ID的情况下，该终端设备会向该基站发起RRC建立请求，和网络进行连接；如果该寻呼消息中没有该终端设备自己的ID的情况下，该终端设备会忽略该寻呼请求。
在CU-DU架构中，CU来判断寻呼消息中RAN Paging Area所包含的小区属于哪些DU下的哪些小区，再把寻呼消息涉及的小区列表发给相关的DU，让DU组成寻呼消息，并发送给与DU相关的小区相连的所有的终端设备。
7、卫星通信
卫星的轨道越高其面积越大，但是通信的时延也相对越长。一般说来，卫星的运行轨道根据高度可以分为：
(1)LEO：轨道高度为160～2000km；
(2)中地球轨道(medium earth orbit，MEO)：轨道高度为2000～35786km；
(3)静止地球轨道(geostationary earth orbit，GEO)：轨道高度为35786km，运行在此轨道上的卫星与地球的相对位置不受地球自转的影响。
其中，低轨通信卫星距离地面近、通信时延短、数据传输率高。
传统地面网络中的接入网设备的位置是固定不变的，且在接入网设备与核心网设备之间建立NG接口连接时，接入网设备会将自己支持的TAC或者RANAC发送给核心网设备，由于接入网设备的位置是固定不变的，因此，每个接入网设备自己支持的TAC或者RANAC的规划是不会变化的，每个接入网设备覆盖范围内的每个小区的TAC或者RANAC是不变的。
NTN中的LEO的接入网设备相对于地面是不停地移动，目前，是将地理位置和TA进行绑定，即当LEO的接入网设备运动时，LEO的接入网设备的TA会不断的变化，而终端设备的TA是不变的。例如，如图4所示，是一种LEO的接入网设备运动过程中LEO接入网设备的TAC变化的示意图。如图4(a)所示，接入网设备需要与终端设备1传输数据，在t 0时刻，接入网设备1的天线发出的波束在地面上覆盖区域为TAC0，接入网设备2的天线发出的波束在地面上覆盖区域为TAC1，此时，终端设备1在TAC1内，接入网设备2会收到寻呼消息，接入网设备2会根据TA List1或RANAC list1中相应的小区相连的终端设备发送该寻呼消息，其中，TA List1或RANAC list1中包括TAC1对应的TA1。但是，随着接入网设备1和接入网设备2的移动，接入网设备1的天线发出的波束在地面上覆盖区域和接入网设备2的天线发出的波束在地面上覆盖区域会发生变化，如图4(b)所示，在t 1时刻，t 1时刻晚于t 0时刻，接入网设备1的天线发出的波束在地面上覆盖区域为TAC1，接入网设备2的天线发出的波束在地面上覆盖区域为TAC2，此时，接入网设备2根据TA List2或RANAC list2中相应的小区相连的终端设备发送该寻呼消息，其中，TA List2或RANAC list2中包括TAC2对应的TA2，且TA List2或RANAC list2中不包括TAC1对应的TA1，但是，终端设备1仍然在TAC1内，终端设备1根本收不到该寻呼消息，会造成接入网设备进行无效的寻呼。
现有协议中，接入网设备收到的寻呼消息里携带有两个参数：①预期的寻呼尝试次数(Intended Number of Paging Attempts)，即想要寻呼次数，因为终端设备不是每时每刻都监听寻呼信道，可能因为各种原因漏监听掉寻呼消息，所以一般会设置寻呼多次，例如10次。②已经寻呼尝试计数(Paging Attempt Count)，即已经尝试的寻呼次数，即接入网设备每发一次寻呼消息，这个值就加一。
当满足以下两个条件中的任意一个条件时，接入网设备才会停止寻呼终端设备。条件1：已经尝试的寻呼计数等于预期的寻呼尝试次数；条件2：终端设备的RRC状态改变时，例如，终端设备的RRC状态由RRC空闲态变成RRC连接态；又例如，终端设备的RRC状态由RRC空闲态变成其他状态。
因此，随着接入网设备地不断移动，接入网设备寻呼的终端设备可能已经不在其天线发出的波束在地面上覆盖区域内，从而终端设备根本收不到接入网设备的寻呼消息，会造成接入网设备进行无效的寻呼，同时，接入网设备在满足上述两个条件中的任意一个条件时，接入网设备才会停止寻呼终端设备，会增加接入网设备的信令开销和造成接入网设备 电量的浪费。
因此，本申请提供了一种寻呼方法，可以节省接入网设备的信令开销和电量。
为了便于理解本申请实施例，在介绍本申请实施例之前，先作出以下几点说明。
第一，在本申请实施例中，“指示”可以包括直接指示和间接指示，也可以包括显式指示和隐式指示。将某一信息(如下文所述的第一信息)所指示的信息称为待指示信息，则具体实现过程中，对待指示信息进行指示的方式有很多种，例如但不限于，可以直接指示待指示信息，如待指示信息本身或者该待指示信息的索引等。也可以通过指示其他信息来间接指示待指示信息，其中该其他信息与待指示信息之间存在关联关系。还可以仅仅指示待指示信息的一部分，而待指示信息的其他部分则是已知的或者提前约定的。例如，还可以借助预先约定(例如协议规定)的各个信息的排列顺序来实现对特定信息的指示，从而在一定程度上降低指示开销。
第二，在下文示出的实施例中第一、第二以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的指示信息等。
第三，本申请实施例中涉及的“多个”是指两个或两个以上。
第四，本申请实施例中涉及的“核心网设备”可以是接入和移动管理功能(access and mobility management function，AMF)，但不限于AMF。
第五，本申请实施例中涉及的“接入网设备”可以是gNB。
以下，以不同的接入网设备架构，分别详细描述本申请实施例提供的寻呼方法。
参见图5，图5是适用于本申请实施例的通信系统的一种架构的示意图。如图5所示，卫星携带具备整个接入网设备功能的载荷。终端设备和接入网设备通过无线U U口连接，接入网设备通过地面NTN网关和CN建立无线反馈链路。
在新空口(new radio，NR)中，Uu口也称为NR-Uu。另外，图5中所示的N 6接口为CN和数据网络(data network)之间的接口。CN和NTN网关之间采用NG接口。NTN网关和无线接入网络(radio access network，RAN)之间采用基于卫星无线接口(satelite radio interface，SRI)的NG接口。
参见图6，图6是适用于本申请实施例的通信系统的另一种架构的示意图。如图6所示，卫星携带接入网设备的部分功能载荷。例如，卫星可以携带DU，空中的DU通过地面NTN网关和CU建立无线反馈链路。
另外，在图6中，接入网设备的DU和CU之间采用基于SRI的F1接口其中，RRU表示射频拉远单元(radio remote unit)。
图7是本申请提供的寻呼方法200的示意性流程图。以下，结合图7阐述本申请实施例提供的寻呼方法200，该方法200包括步骤210至步骤230，在该方法200中涉及的第一设备可以是图5中的卫星，该第一设备携带具备整个接入网设备功能的载荷。
步骤210，第一设备接收第一寻呼消息，该第一寻呼消息包括第一列表，其中，第一列表包括至少一个小区的区域标识。
其中，第一寻呼消息还可以包括终端设备的标识，该终端设备的标识即为待寻呼的终端设备。
其中，至少一个小区为待寻呼的终端设备可能存在的小区。至少一个小区为待寻呼的终端设备可能存在的小区可以理解为该待寻呼的终端设备在该至少一个小区覆盖的区域 中。
其中，第一列表为TAI列表；或者，第一列表为包括RNA和/或小区全球标识的列表。在第一列表为TAI列表的情况下，第一设备接收第一核心网设备发送的第一寻呼消息。此时，该终端设备处于RRC空闲态和CM空闲态，核心网设备知道待寻呼的终端设备可能存在的TA，因此，该终端设备的寻呼是由核心网设备发起的，该寻呼方式属于CN Paging。
在第一列表为包括RNA和/或小区全球标识的列表的情况下，第一设备接收第四设备发送的第一寻呼消息，此时，该终端设备处于RRC第三态和CM_CONNECTED，其中，该第四设备是该终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备，该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备知道待寻呼的终端设备可能存在的RNA和/或小区，因此，该终端设备的寻呼是由终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备发起的，该寻呼方式属于RAN Paging。
可选地，上述的第一设备可以是一个或多个，该一个或多个第一设备都是第一列表中待寻呼的终端设备的区域所涉及到的接入网设备。
例如，如图3所示，若待寻呼的终端设备对应的TA为TA List2，即待寻呼的终端设备对应的TA为TA4、TA5、TA6、TA7、TA8和TA9，其中，TA4、TA5、TA6、TA7、TA8和TA9都在接入网设备A的覆盖区域，则接入网设备A为第一设备，此时，第一设备为1个。又例如，如图3所示，若待寻呼的终端设备对应的TA为TA List1，即待寻呼的终端设备的TA为TA1、TA2、TA3、TA4、TA5和TA6，其中，TA1和TA2在接入网设备1的覆盖区域，TA3、TA4和TA5在接入网设备2的覆盖区域，TA6在接入网设备3的覆盖区域，则接入网设备1、接入网设备2和接入网设备3都为第一设备，此时，第一设备为3个。
在第一设备为多个的情况下，每个第一设备都会执行方法200中包括的每个步骤。
步骤220，第一设备确定第一小区，其中，第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同，第一时刻为当前时刻，第二时刻早于第一时刻；
其中，第一小区的区域标识为TAC；或者，第一小区的区域标识为RANAC和/或小区全球标识。
在第一列表为TAI列表的情况下，第一小区的区域标识为TAC。在第一列表为包括RNA和/或小区全球标识的列表的情况下，第一小区的区域标识为RANAC和/或小区全球标识。
上述第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同可以理解为第一小区的区域标识在第一时间内发生变化，该第一时间为第一时刻至第二时刻之间的时间。
其中，第一小区可以是第一设备覆盖的小区，且第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同的一个或多个小区。例如，第一设备覆盖的小区为小区1、小区2和小区3，在第二时刻，小区1对应的TAC为TAC 1，小区2对应的TAC为TAC 2，小区3对应的TAC为TAC 3，在第一时刻，小区1对应的TAC为TAC 1，小区2对应的TAC为TAC 2，小区3对应的TAC为TAC 4，则第一时刻的小区3对应的TAC与第二时刻的小区3对应的TAC不相同，即小区3在第一时刻至第二时刻之间的时 间内小区3的TAC发生变化，则在第一时刻，小区3为第一小区，即第一小区为一个。又例如，第一设备覆盖的小区为小区a、小区b和小区c，在第二时刻，小区a对应的TAC为TAC a，小区b对应的TAC为TAC b，小区c对应的TAC为TAC c，在第一时刻，小区a对应的TAC为TAC a，小区b对应的TAC为TAC c，小区c对应的TAC为TAC d，则第一时刻的小区b对应的TAC与第二时刻的小区b对应的TAC不相同，且第一时刻的小区c对应的TAC与第二时刻的小区c对应的TAC不相同，即小区b在第一时刻至第二时刻之间的时间内小区b的TAC发生变化，同时，小区c在第一时刻至第二时刻之间的时间内小区c的TAC发生变化，则在第一时刻，小区b和小区c都为第一小区，即第一小区为两个。
上述第一设备覆盖的小区可以理解为第一设备可以为第一设备覆盖的小区内的终端设备提供通信服务。例如，第一设备覆盖的小区为小区1、小区2和小区3，小区1内的终端设备包括终端设备1和终端设备2；小区2内的终端设备包括终端设备3；小区3内的终端设备包括终端设备4、终端设备5和终端设备6。第一设备可以为第一设备覆盖的小区的终端设备提供通信服务，即第一设备可以为小区1内的终端设备1和终端设备2提供通信服务，第一设备也可以为小区2内的终端设备3提供通信服务，第一设备还可以为小区3内的终端设备4和终端设备5提供通信服务。
步骤230，在第一时刻的第一小区的区域标识不属于第一列表的情况下，第一设备停止寻呼第一小区内的终端设备。
在第一小区的区域标识不属于第一列表的情况下，第一设备停止寻呼第一小区内的终端设备，即第一设备停止通过第一小区向第一小区内的终端设备发送第一寻呼消息。
具体地，当第一小区的区域标识发生变化的情况下，第一设备判断第一时刻的第一小区的标识是否属于第一列表，在第一时刻的第一小区的区域标识不属于第一列表的情况下，第一设备停止寻呼第一小区内的终端设备；在第一时刻的第一小区的区域标识属于第一列表的情况下，第一设备寻呼第一小区内的终端设备，其中，在第一小区的区域标识属于第一列表的情况下，第一设备寻呼第一小区内的终端设备，即第一设备通过第一小区将第一寻呼消息发送给第一小区内的终端设备。
例如，如图3所示，若待寻呼的终端设备的TA为TA List2，即待寻呼的终端设备的TA为TA4、TA5、TA6、TA7、TA8和TA9，其中，TA4、TA5、TA6、TA7、TA8和TA9都在设备A的覆盖区域，此时，若第一设备的第一小区的TAC对应的TA为TA3，则第一小区的标识不属于第一列表，第一设备停止通过第一小区发送第一寻呼消息；若第一设备的第一小区的TAC对应的TA为TA8，则第一小区的标识属于第一列表，第一设备通过第一小区将第一寻呼消息发送给第一小区内的终端设备。
当第一核心网设备发起寻呼时(该待寻呼的终端设备处于RRC空闲态)，会向第一设备发送第一寻呼消息，第一设备通过判断第一设备覆盖的小区，即第一小区的TAC是否属于待寻呼的终端设备的TAI列表，在第一小区的TAC属于第一列表的情况下，第一设备通过第一小区将第一寻呼消息发送给第一小区内的终端设备；在第一小区的TAC不属于第一列表的情况下，第一设备停止通过第一小区发送第一寻呼消息，从而可以节省第一设备的信令开销和电量。
当第四设备(该第四设备是该终端设备从RRC连接态进入RRC第三态之前的最后服 务的接入网设备)发起寻呼时，会向第一设备发送第一寻呼消息，第一设备通过判断第一设备覆盖的小区，即第一小区的RANAC是否属于待寻呼的终端设备的RNA列表，在第一小区的RANAC属于第一列表的情况下，第一设备通过第一小区将第一寻呼消息发送给第一小区内的终端设备；在第一小区的RANAC不属于第一列表的情况下，第一设备停止通过第一小区发送第一寻呼消息，从而可以节省第一设备的信令开销。
图8是本申请提供的寻呼方法300的示意性流程图。以下，结合图8阐述本申请实施例提供的寻呼方法300，该方法300包括步骤310至步骤350，在该方法300中涉及的DU可以是图6中的卫星携带的DU，CU是图6中设置在地面上的CU。
步骤310，CU获取第一寻呼消息，该第一寻呼消息包括第一列表，其中，第一列表包括至少一个小区的区域标识。
其中，第一寻呼消息还可以包括待寻呼的终端设备的标识。
其中，至少一个小区为待寻呼的终端设备可能存在的小区。至少一个小区为待寻呼的终端设备可能存在的小区可以理解为该待寻呼的终端设备在至少一个小区覆盖的区域中。
其中，第一列表为TAI列表；或者，第一列表为RNA列表。
在第一列表为TAI列表的情况下，CU接收第一核心网设备发送的第一寻呼消息。此时，该终端设备处于RRC空闲态和CM空闲态，核心网设备知道待寻呼的终端设备所在的TA，因此，该终端设备的寻呼是由核心网设备发起的，该寻呼方式属于CN Paging。
在第一列表为包括RNA和/或小区全球标识的列表的情况下，CU接收第四设备发送的第一寻呼消息，此时，该终端设备处于RRC第三态和CM_CONNECTED，其中，该第四设备是该终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备，该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备知道待寻呼的终端设备所在的RNA和/或小区，因此，该终端设备的寻呼是由终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备发起的，该寻呼方式属于RAN Paging。
可选地，上述的CU可以是一个或多个，该一个或多个CU都是第一列表中待寻呼的终端设备的TA所涉及到的接入网设备。
在CU为多个的情况下，每个CU都会执行方法300中包括的每个步骤。
可选地，上述第一寻呼消息还可以包括终端设备的标识，该终端设备的标识即为待寻呼的终端设备的标识。
可选地，在CU获取到第一寻呼消息之后，会根据第一寻呼消息，确定第一寻呼消息中的第一列表包括的待寻呼的终端设备所存在的TA是在DU覆盖的小区内，进而向相应的DU发送第一寻呼消息，相应的DU重新组成第二寻呼消息，向DU相应的小区发送该第二寻呼消息，其中，该第二寻呼消息包括该DU涉及的小区列表和待寻呼的终端设备的标识。例如，第一寻呼消息中待寻呼的终端设备的TA包括TA 1、TA 2、TA 3、TA 4、TA 5和TA 6，其中，TA 1和TA 2是小区1内，TA 3在小区2内，TA 4、TA 5和TA 6在小区3内，此时，与CU相连的DU有设备1、设备2、设备3、设备4，其中，设备1覆盖小区1和小区2，设备3覆盖小区3，则此时CU向设备1发送小区列表1，该小区列表1包括小区1和小区2，同时，CU还会向设备3发送小区列表2，该小区列表2包括小区3。此时，设备1接收到小区列表1后会组成第二寻呼消息，并根据小区列表1向小区列表1中的每个小区发送该第二寻呼消息；同时，设备3接收到小区列表2后会组成第二 寻呼消息，并根据小区列表2向小区列表2中的每个小区发送该第二寻呼消息；该第二寻呼消息包括待寻呼的终端设备的标识。
步骤320，DU确定第一小区，第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同，第一时刻为当前时刻，第二时刻早于第一时刻。
第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同可以理解为第一小区的区域标识在第一时间内发生变化，该第一时间为第一时刻至第二时刻之间的时间。
其中，第一小区的区域标识为TAC；或者，第一小区的区域标识为RANAC和/或小区全球标识。
可选地，在第一列表为TAI列表的情况下，上述第一小区的区域标识为TAC；或者，在第一列表为包括RNA和/或小区全球标识的列表的情况下，上述第一小区的区域标识为RANAC和/或小区全球标识。
其中，上述第一小区为DU覆盖的小区，且第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同的一个或多个小区。
上述DU覆盖的小区可以理解为DU可以为DU覆盖的小区内的终端设备提供通信服务。
例如，当DU在t 0时刻，覆盖的小区为小区1，该小区1对应的TAC为TAC1，随着时间的变化，DU在地面上覆盖的区域会不断地发生变化，当DU在t 1时刻，该t 0早于t 1，覆盖的小区为小区1，该小区1对应的TAC为TAC 2，即DU可以确定小区1为第一小区。
又例如，当DU在t 0时刻，覆盖的小区为小区2，该小区2对应的RANAC为RANAC1，随着时间的变化，DU在地面上覆盖的区域会不断地发生变化，当DU在t 1时刻，该t 0早于t 1，覆盖的小区为小区2，该小区2对应的RANAC为RANAC 2，即DU可以确定小区2为第一小区。
其中，DU可以是一个或多个，该一个或多个DU与CU相连。
上述第一小区可以是DU覆盖的小区内，且第一时刻的第一小区的标识和第二时刻的第一小区的标识不相同的一个或多个小区。
步骤330，CU接收DU发送的第一配置更新消息，第一配置更新消息用于指示第一时刻的第一小区的区域标识。相应地，DU向CU发送第一配置更新消息。
可选地，当DU覆盖的小区的区域标识发生变化时，DU便会向CU发送第一配置更新消息，该第一配置更新消息包括DU覆盖的小区的区域标识发生变化的小区的区域标识，该第一配置更新消息可以是DU配置更新(DU configuration update)消息。
可选地，在第一小区为多个的情况下，DU可以向CU发送多个DU配置更新消息，该多个DU配置更消息中的每个DU配置更新消息用于指示t 3时刻小区3的区域标识。其中，t 3为任意时刻，DU覆盖的小区3在包括t 3时刻在内的第一时间内的区域标识不相同。
步骤340，CU根据第一配置更新消息，确定第一小区。
可理解，CU根据第一配置更新消息，便可以确定DU覆盖的小区中哪个小区的区域标识发生变化。
步骤350，CU在第一时刻的第一小区的标识不属于第一列表的情况下，CU向DU发送第一信息，第一信息用于指示DU停止寻呼第一小区内的终端设备。
具体地，当第一小区的区域标识发生变化的情况下，CU判断第一时刻的第一小区的区域标识是否属于第一列表；在第一时刻的第一小区的标识不属于第一列表的情况下，CU禁止寻呼第一小区内的终端设备；在第一时刻的第一小区的区域标识属于第一列表的情况下，CU寻呼第一小区内的终端设备。
其中，在第一时刻的第一小区的区域标识属于第一列表的情况下，CU寻呼第一小区内的终端设备可以理解为CU向DU发送第一寻呼消息，该DU会重新组成第二寻呼消息，并通过第一小区将该第二寻呼消息发送给第一小区内的终端设备，该第二寻呼消息包括第一小区的标识和待寻呼的终端设备的标识，从而DU通过第一小区寻呼待寻呼的终端设备。
其中，在第一时刻的第一小区的区域标识不属于第一列表的情况下，CU停止寻呼第一小区内的终端设备可以理解为CU不会向DU发送上述第一寻呼消息。此时，CU向DU发送第一信息，DU接收到第一信息，会停止向第一小区内的终端设备发送上述第二寻呼消息。
其中，第一信息承载于无线资源控制RRC信令上；或者，第一信息承载于第一配置更新确认ACK消息中。
当第一核心网设备发起寻呼时，会向CU发送第一寻呼消息，并且CU接收DU发送的第一配置更新消息，判断DU覆盖的小区，即第一小区的TAC是否属于待寻呼的终端设备的TAI列表，在第一小区的TAC属于第一列表的情况下，CU将第一寻呼消息发送给DU，DU重新组成第二寻呼消息，DU通过第一小区将第二寻呼消息发送给第一小区内的终端设备；在第一小区的TAC不属于第一列表的情况下，CU向DU发送第一信息，第一信息用于指示DU停止寻呼第一小区内的终端设备，即DU不会将第二寻呼消息发送给第一小区内的终端设备，从而可以节省CU的信令开销和电量。
当第四设备(该第四设备是该终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备)发起寻呼时，会向CU发送第一寻呼消息，CU接收DU发送的第一配置更新消息，判断DU覆盖的小区，即第一小区的RANAC是否属于待寻呼的终端设备的RNA列表，在第一小区的RANAC属于第一列表的情况下，CU将第一寻呼消息发送给DU，DU重新组成第二寻呼消息，并通过第一小区将该第二寻呼消息发送给第一小区内的终端设备；在第一小区的RANAC不属于第一列表的情况下，CU向DU发送第一信息，第一信息用于指示DU停止寻呼第一小区内的终端设备，即DU不会将第二寻呼消息发送给第一小区内的终端设备，从而可以节省CU的信令开销和电量。
图9是本申请提供的寻呼方法400的示意性流程图。以下，结合图9阐述本申请实施例提供的寻呼方法400，该方法400包括步骤410至步骤430，在该方法400中涉及的DU可以是图6中的卫星携带的DU，CU是图6中设置在地面上的CU。
步骤410，DU接收CU发送的第一寻呼消息，该第一寻呼消息包括第一列表，其中，第一列表包括至少一个小区的区域标识。相应地，CU向DU发送第一寻呼消息。
其中，该第一寻呼消息还包括终端设备的标识，该终端设备的标识即为待寻呼的终端设备的标识。
其中，至少一个小区为待寻呼的终端设备可能存在的小区。至少一个小区为待寻呼的终端设备可能存在的小区可以理解为该待寻呼的终端设备在至少一个小区覆盖的区域中。
其中，第一列表为TAI列表，第一小区的区域标识为TAC；或者，第一列表为RNA 列表，第一小区的区域标识为RANAC和/或小区全球标识。
在第一列表为TAI列表的情况下，CU接收第一核心网设备发送的第一寻呼消息，该CU再将该第一寻呼消息发送给DU。此时，该终端设备处于RRC空闲态和CM空闲态，核心网设备知道待寻呼的终端设备所在的TA，因此，该终端设备的寻呼是由核心网设备发起的，该寻呼方式属于CN Paging。
在第一列表为包括RNA和/或小区全球标识的列表的情况下，CU接收第四设备发送的第一寻呼消息，CU再将该第一寻呼消息发送给DU，此时，该终端设备处于RRC第三态和CM_CONNECTED，其中，该第四设备是该终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备，该待寻呼的终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备知道待寻呼的终端设备所在的RNA和/或小区，因此，该终端设备的寻呼是由终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备发起的，该寻呼方式属于RAN Paging。
可选地，上述的DU可以是一个或多个，该一个或多个DU都是第一列表中待寻呼的终端设备的区域所涉及到的接入网设备。
在DU为多个的情况下，每个DU都会执行方法200中包括的每个步骤。
步骤420，DU确定第一小区，其中，第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同，第一时刻为当前时刻，第二时刻早于所述第一时刻。
第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同可以理解为第一小区的区域标识在第一时间内发生变化，该第一时间为第一时刻至第二时刻之间的时间。
其中，第一小区可以是DU覆盖的小区，且第一时刻的第一小区的区域标识和第二时刻的第一小区的区域标识不相同的一个或多个小区。
上述DU覆盖的小区可以理解为DU可以为DU覆盖的小区内的终端设备提供通信服务。
在第一列表为TAI列表的情况下，第一小区的区域标识为TAC。在第一列表为包括RNA和/或小区全球标识的列表的情况下，第一小区的区域标识为RANAC和/或小区全球标识。
步骤430，DU在第一小区的区域标识不属于第一列表的情况下，DU停止寻呼第一小区内的终端设备。
具体地，当第一小区的区域标识发生变化的情况下，DU判断第一小区的区域标识是否属于第一列表，在第一小区的区域标识不属于第一列表的情况下，DU停止寻呼第一小区内的终端设备；在第一小区的区域标识属于第一列表的情况下，DU寻呼第一小区内的终端设备。
DU停止寻呼第一小区内的终端设备可以理解为DU不会向第一小区内的终端设备发送第一寻呼消息。DU寻呼第一小区内的终端设备可以理解为DU向第一小区内的终端设备发送第一寻呼消息。
当第一核心网设备发起寻呼时(该待寻呼的终端设备处于RRC空闲态)，会向CU发送第一寻呼消息，该CU再将该第一寻呼消息发送给DU，DU通过判断DU覆盖的小区，即第一小区的TAC是否属于待寻呼的终端设备的TAI列表，在第一小区的TAC属于第一 列表的情况下，DU将第一寻呼消息发送给第一小区内的终端设备；在第一小区的TAC不属于第一列表的情况下，DU停止发送第一寻呼消息，从而可以节省DU的信令开销和电量。
当第四设备(该第四设备是该待终端设备从RRC连接态进入RRC第三态之前的最后服务的接入网设备)发起寻呼时，会向CU发送第一寻呼消息，该CU再将该第一寻呼消息发送给DU，DU通过判断DU覆盖的小区，即第一小区的RANAC是否属于待寻呼的终端设备的RNA列表，在第一小区的RANAC属于第一列表的情况下，DU将第一寻呼消息发送给第一小区内的终端设备；在第一小区的RANAC不属于第一列表的情况下，DU停止发送第一寻呼消息，从而可以节省DU的信令开销和电量。
上文结合图1至图9详细描述了本申请实施例的寻呼方法，下面结合图10至图14，详细描述本申请实施例的装置。应理解，图10至图14所示的装置能够实现图7-9所示的方法流程中的一个或者多个的步骤。为避免重复，在此不再详细赘述。
参见图10所示，图10为本申请提供的寻呼装置500的示意图。寻呼装置500包括接收单元510、确定单元520和寻呼单元530。该装置500用于执行上述方法200中第一设备对应的各个流程和步骤。
接收单元510，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
确定单元520，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
寻呼单元530，用于在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，停止寻呼所述第一小区内的终端设备。
可选地，所述第一列表为TAI列表，所述第一小区的区域标识为TAC；或者，所述第一列表为包括RNA和/或小区全球标识的列表，所述第一小区的区域标识为RANAC和/或小区全球标识。
可选地，所述寻呼单元530还用于：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
在一种可能的实现方式中，上述寻呼装置500可以为接入网设备，例如下文中的基站80，其中确定单元520的功能和寻呼单元530的功能可以由基站中的处理器8022实现，接收单元510的功能可以通过基站80的RRU 801实现。
参见图11所示，图11为本申请提供的寻呼装置600的示意图。该寻呼装置600包括CU 610。该装置600可以是第一装置，也可以为第一装置中的芯片。
在该装置600是第一装置的一种可能的实现方式中，装置600用于执行上述方法300中CU对应的各个流程和步骤。
集中式单元CU 610，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
所述CU 610，还用于接收第二装置发送的第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识，所述第二装置包括分布式单元DU；
所述CU 610，还用于根据所述第一配置更新消息，确定所述第一小区；
在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述CU还用于向所述第二装置发送第一信息，所述第一信息用于指示所述第二装置停止寻呼所述第一小区内的终端设备。
可选地，所述第一列表为TAI列表，所述第一小区的区域标识为TAC；或者，所述第一列表为包括RNA和/或小区全球标识的列表，所述第一小区的区域标识为RANAC和/或小区全球标识。
可选地，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
在该装置600还可以是第一装置的另一种可能的实现方式中，装置600用于执行上述方法400中CU对应的各个流程和步骤。
CU 610，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
所述CU 610向第二装置发送第一寻呼消息，所述第二装置包括集中式单元DU。
可选地，所述第一列表为TAI列表，所述第一小区的区域标识为TAC；或者，所述第一列表为包括RNA和/或小区全球标识的列表，所述第一小区的区域标识为RANAC和/或小区全球标识。
在一种可能的实现方式中，上述寻呼装置600可以为接入网设备，例如下文中的基站80，其中CU 510的功能可以由基站中的处理器8022实现。
参见图12所示，图12为本申请提供的寻呼装置700的示意图。第二装置700包括DU 710。该装置700可以是第二装置，也可以为第二装置中的芯片。
在该装置700是第二装置的一种可能的实现方式中，装置700用于执行上述方法300中DU对应的各个流程和步骤。
DU 710，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
所述DU 710，还用于向第一装置发送第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识，所述第一装置包括集中式单元CU；
所述DU 710，还用于接收所述第一装置发送的第一信息，所述第一信息用于指示所述DU停止寻呼所述第一小区内的终端设备。
可选地，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
在该装置700是第二装置的另一种可能的实现方式中，装置700用于执行上述方法400中DU对应的各个流程和步骤。
DU 710，用于接收第一装置发送的第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识，所述第一装置包括集中式单元CU；
所述DU 710，还用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述DU 710还用于停止寻呼所述第一小区内的终端设备。
可选地，所述第一列表为TAI列表，所述第一小区的区域标识为TAC；或者，所述第一列表为包括RNA和/或小区全球标识的列表，所述第一小区的区域标识为RANAC和/或小区全球标识。
可选地，所述DU 710还用于：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
在一种可能的实现方式中，上述寻呼装置700可以为接入网设备，例如下文中的基站80，其中DU 710的功能可以由基站中的BBU 802实现。
参见图13所示，图13为本申请提供的寻呼装置800的示意图。寻呼装置800包括CU 810和DU 820。
在一种可能的实现方式中，该装置800中的DU 820用于执行上述方法300中DU对应的各个流程和步骤；该装置800中的CU 810用于执行上述方法300中CU对应的各个流程和步骤。
所述CU 810，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
所述DU 820，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
所述CU 810，接收所述DU 820发送的第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识；
所述CU 810，还用于根据所述第一配置更新消息，确定第一小区；
在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述CU810还用于向所述DU 820发送第一信息，所述第一信息用于指示所述DU 820停止寻呼所述第一小区内的终端设备。
可选地，所述第一列表为TAI列表，所述第一小区的区域标识TAC；或者，所述第一列表为包括RNA和/或小区全球标识的列表，所述第一小区的区域标识为RANAC和/或小区全球标识。
可选地，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
在另一种可能的实现方式中，该装置800中的DU 820用于执行上述方法400中DU对应的各个流程和步骤；该装置800中的CU 810用于执行上述方法400中CU对应的各个流程和步骤。
所述CU 810，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
所述DU 820，用于接收CU 810发送的第一寻呼消息；
所述DU 820，还用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述DU820还用于停止寻呼所述第一小区内的终端设备。
可选地，所述第一列表为TAI列表，所述第一小区的区域标识为TAC；或者，所述第一列表为包括RNA和/或小区全球标识的列表，所述第一小区的区域标识为RANAC和/或小区全球标识。
可选地，所述DU 820还用于：在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
在一种可能的实现方式中，上述寻呼装置800可以为接入网设备，例如下文中的基站80，其中DU 820的功能可以由基站中的BBU 802实现；其中CU 810的功能可以由基站中的RRU 801实现。
下文结合图14介绍本申请实施例的接入网设备的结构。
图14是本申请实施例的一种接入网设备的结构示意图，如可以为基站的结构示意图。如图14所示，该基站可应用于如图1所示的系统中，执行上述方法实施例中接入网设备的功能。基站80可包括一个或多个射频单元，如远端射频单元(remote radio unit，RRU)801和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)802。所述RRU 801可以称为收发单元、收发机、收发电路、或者收发器等等，其可以包括至少一个天线8011和射频单元8012。所述RRU 801部分主要用于射频信号的收发以及射频信号与基带信号的转换。所述BBU 802部分主要用于进行基带处理，对基站进行控制等。所述RRU 801与BBU 802可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 802为基站的控制中心，也可以称为处理单元，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理单元)802可以用于控制基站执行上述方法实施例中关于接入网设备的操作流程。
在一个实例中，所述BBU 802可以由一个或多个单板构成，多个单板可以共同支持单一接入指示的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 802还包括存储器8021和处理器8022，所述存储器8021用于存储必要的指令和数据。例如存储器8021存储上述实施例中的码本索引与预编码矩阵的对应关系。所述处理器8022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于接入网设备的操作流程。所述存储器8021和处理器8022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
应理解，在本申请实施例中的处理器可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只 读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图7-9所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图7-9所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种芯片系统，该芯片系统包括处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片系统的通信设备执行图7-9所示实施例中任意一个实施例的方法。
上述实施例，可以全部或部分地通过软件、硬件、固件或其他任意组合来实现。当使用软件实现时，上述实施例可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令或计算机程序。在计算机上加载或执行所述计算机指令或计算机程序时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以为通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集合的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质。半导体介质可以是固态硬盘。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的 划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者接入网设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (24)

  1. 一种寻呼方法，其特征在于，包括：
    第一设备接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
    所述第一设备确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
    在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述第一设备停止寻呼所述第一小区内的终端设备。
  2. 根据权利要求1所述的方法，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，所述第一设备寻呼所述第一小区内的终端设备。
  4. 一种寻呼的装置，其特征在于，包括：
    接收单元，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
    确定单元，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
    寻呼单元，用于在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，停止寻呼所述第一小区内的终端设备。
  5. 根据权利要求4所述的装置，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  6. 根据权利要求4或5所述的装置，其特征在于，所述寻呼单元还用于：
    在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
  7. 一种寻呼装置，其特征在于，包括：
    集中式单元CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
    所述CU，还用于接收第二装置发送的第一配置更新消息，所述第一配置更新消息用 于指示所述第一时刻的所述第一小区的区域标识，所述第二装置包括分布式单元DU；
    所述CU，还用于根据所述第一配置更新消息，确定所述第一小区；
    在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述CU还用于向所述第二装置发送第一信息，所述第一信息用于指示所述第二装置停止寻呼所述第一小区内的终端设备。
  8. 根据权利要求7所述的装置，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  9. 根据权利要求7所述的装置，其特征在于，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
  10. 一种寻呼装置，其特征在于，包括：
    分布式单元DU，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
    所述DU，还用于向第一装置发送第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识，所述第一装置包括集中式单元CU；
    所述DU，还用于接收所述第一装置发送的第一信息，所述第一信息用于指示所述DU停止寻呼所述第一小区内的终端设备。
  11. 根据权利要求10所述的装置，其特征在于，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
  12. 一种寻呼装置，其特征在于，包括分布式单元DU和集中式单元CU，
    所述CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
    所述DU，用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
    所述CU，接收所述DU发送的第一配置更新消息，所述第一配置更新消息用于指示所述第一时刻的所述第一小区的区域标识；
    所述CU，还用于根据所述第一配置更新消息，确定第一小区；
    在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述CU还用于向所述DU发送第一信息，所述第一信息用于指示所述DU停止寻呼所述第一小区内的终端设备。
  13. 根据权利要求12所述的装置，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  14. 根据权利要求12所述的装置，其特征在于，所述第一信息承载于无线资源控制RRC信令上；或者，所述第一信息承载于第一配置更新确认ACK消息中。
  15. 一种寻呼装置，其特征在于，包括：
    集中式单元CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
    所述CU向第二装置发送第一寻呼消息，所述第二装置包括集中式单元DU。
  16. 根据权利要求15所述的装置，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  17. 一种寻呼装置，其特征在于，包括：
    分布式单元DU，用于接收第一装置发送的第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识，所述第一装置包括集中式单元CU；
    所述DU，还用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
    在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述DU还用于停止寻呼所述第一小区内的终端设备。
  18. 根据权利要求17所述的装置，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  19. 根据权利要求17或18所述的装置，其特征在于，所述DU还用于：
    在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
  20. 一种寻呼装置，其特征在于，包括分布式单元DU和集中式单元CU，
    所述CU，用于接收第一寻呼消息，所述第一寻呼消息包括第一列表，其中，所述第一列表包括至少一个小区的区域标识；
    所述DU，用于接收CU发送的第一寻呼消息；
    所述DU，还用于确定第一小区，其中，第一时刻的所述第一小区的区域标识和第二时刻的所述第一小区的区域标识不相同，所述第一时刻为当前时刻，所述第二时刻早于所述第一时刻；
    在所述第一时刻的所述第一小区的区域标识不属于所述第一列表的情况下，所述DU还用于停止寻呼所述第一小区内的终端设备。
  21. 根据权利要求20所述的装置，其特征在于，所述第一列表为跟踪区标识TAI列表，所述第一小区的区域标识为跟踪区代码TAC；
    或者，
    所述第一列表为包括接入网区域RNA和/或小区全球标识的列表，所述第一小区的区域标识为接入网区域代码RANAC和/或小区全球标识。
  22. 根据权利要求20或21所述的装置，其特征在于，所述DU还用于：
    在所述第一时刻的所述第一小区的区域标识属于所述第一列表的情况下，寻呼所述第一小区内的终端设备。
  23. 一种计算机可读存储介质，其特征在于，包括计算机程序，所述计算机程序在计算机上被执行时，使得计算机执行如权利要求1-3中任一项所述的方法。
  24. 一种芯片，其特征在于，包括处理器和存储器，所述存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，以执行如权利要求1-3中任一项所述的方法。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023284882A1 (zh) * 2021-07-16 2023-01-19 中国移动通信有限公司研究院 跟踪区域更新方法、装置、终端、网络设备及存储介质
WO2024060017A1 (zh) * 2022-09-20 2024-03-28 深圳传音控股股份有限公司 寻呼方法、通信设备及存储介质

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11877163B2 (en) * 2022-03-25 2024-01-16 Dish Wireless L.L.C. Systems and methods for operating radio access networks with high service availability
US11836480B2 (en) 2022-03-25 2023-12-05 Dish Wireless L.L.C. Systems and methods for reducing service downtime during software upgrades

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109076491A (zh) * 2016-04-15 2018-12-21 瑞典爱立信有限公司 用于在无线网络中寻呼非活动ue的方法和装置
US20190082481A1 (en) * 2015-06-17 2019-03-14 Hughes Network Systems, Llc Approaches for high speed global packet data services for leo/meo satellite systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539200B1 (en) * 1999-07-29 2003-03-25 Qualcomm, Incorporated Method and apparatus for paging a user terminal within the “sweet spot” of a satellite
CN101262272B (zh) * 2008-04-25 2011-08-10 哈尔滨工业大学 一种基于联合位置区低轨卫星网络位置更新的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190082481A1 (en) * 2015-06-17 2019-03-14 Hughes Network Systems, Llc Approaches for high speed global packet data services for leo/meo satellite systems
CN109076491A (zh) * 2016-04-15 2018-12-21 瑞典爱立信有限公司 用于在无线网络中寻呼非活动ue的方法和装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ERICSSON, ZTE, THALES: "Tracking area management and update for NTN LEO", 3GPP DRAFT; R2-1905302 TA FOR LEO NTN_REVISED_VER3, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Xian, China; 20190408 - 20190412, 12 April 2019 (2019-04-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051709730 *
ERICSSON: "Further detail on Earth fixed tracking area for LEO NTN", 3GPP DRAFT; R2-1907159 FURTHER DETAIL ON EARTH FIXED TRACKING AREA FOR LEO NTN, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, Nevada, US; 20190513 - 20190517, 2 May 2019 (2019-05-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051711450 *
See also references of EP4024975A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023284882A1 (zh) * 2021-07-16 2023-01-19 中国移动通信有限公司研究院 跟踪区域更新方法、装置、终端、网络设备及存储介质
WO2024060017A1 (zh) * 2022-09-20 2024-03-28 深圳传音控股股份有限公司 寻呼方法、通信设备及存储介质

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