WO2020088291A1 - Procédé et dispositif de radiomessagerie et procédé et dispositif de mise a jour de correspondance - Google Patents

Procédé et dispositif de radiomessagerie et procédé et dispositif de mise a jour de correspondance Download PDF

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Publication number
WO2020088291A1
WO2020088291A1 PCT/CN2019/112360 CN2019112360W WO2020088291A1 WO 2020088291 A1 WO2020088291 A1 WO 2020088291A1 CN 2019112360 W CN2019112360 W CN 2019112360W WO 2020088291 A1 WO2020088291 A1 WO 2020088291A1
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WO
WIPO (PCT)
Prior art keywords
base station
satellite base
tracking area
satellite
area
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PCT/CN2019/112360
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English (en)
Chinese (zh)
Inventor
王胡成
陈山枝
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电信科学技术研究院有限公司
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Publication of WO2020088291A1 publication Critical patent/WO2020088291A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • 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
    • 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

Definitions

  • the present application relates to the field of wireless communication technology, and in particular, to a paging method and device, and a method and device for updating correspondence.
  • 3rd Generation Mobile Communications Standardization Organization 3rd Generation Partnership Project, 3GPP is studying the support of satellite access in 5G systems to ensure the coverage of land mobile networks.
  • the satellite access technology is implemented by mounting a new radio (NR) base station on the satellite, that is, the wireless coverage of satellite access and the wireless coverage of land access are both NR types. Therefore, according to the prior art, when the 5G core network triggers the paging process, the mobility management function (Access And And Mobility Management Function, AMF) entity needs to register the tracking area (Tracking Area, TA) of the user equipment (User Equipment, UE) registration area ) The base station in the area sends a paging request. For the ground base station, the location of the ground base station will not change, so the TA area covered by the ground base station will not change, so the ground base station can page The information is sent out smoothly, but the satellite base station is dynamically changing.
  • AMF Access And And Mobility Management Function
  • the TA area covered by the satellite base station will change according to the movement of the satellite. If you continue to follow the processing method of the ground base station, the base station corresponding to the TA area changes, but still according to the TA The satellite base station before the area performs paging, which causes paging failure and wastes resources.
  • the present application provides a method and equipment for paging, and a method and equipment for updating correspondence, to solve the problem of high paging failure rate and waste of resources when paging through an asynchronous satellite base station in the prior art.
  • an embodiment of the present application provides a method for reporting information.
  • the method includes:
  • the paging device determines that the terminal needs to be paged
  • the paging device performs paging through a satellite base station corresponding to the tracking area where the terminal is currently located, wherein the satellite base station corresponding to the current tracking area is determined according to the correspondence between the satellite base station and the tracking area in the current coverage area of.
  • the paging device determines to page for the terminal, it performs paging through the satellite base station corresponding to the tracking area where the terminal is currently located, wherein the satellite base station corresponding to the current tracking area is based on the satellite base station and the current
  • the correspondence between the tracking areas in the coverage area is determined; because the satellite base station used for paging in this application is the satellite base station corresponding to the tracking area where the terminal is currently located, and the current coverage area of the satellite base station (that is, the service of the satellite base station)
  • the tracking area does not exist in the coverage area of the satellite base station corresponding to the tracking area. Therefore, when the terminal paging through the base station, the tracking area does not exist.
  • the satellite base station can accurately perform paging and reduce the waste of resources.
  • the paging device is an AMF entity
  • the paging device determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the paging device sends the area identifier of the tracking area where the terminal is currently located to a satellite information management entity, so that the satellite information management entity determines a satellite base station according to the corresponding relationship;
  • the paging device uses the satellite base station notified by the satellite information management entity as the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the paging device sends the area identifier of the tracking area where the terminal is currently located to the satellite information management entity, because the satellite information management entity stores the correspondence between the satellite base station and the tracking area in the current coverage area, Therefore, the satellite base station received by the paging device is a satellite base station corresponding to the tracking area where the terminal is currently located, that is, the satellite base station acquired by the paging device is a satellite base station covering the tracking area where the terminal is currently located, ensuring When paging through the acquired satellite base station, the paging process is smooth and resource waste is reduced.
  • the paging device is an AMF entity
  • the paging device When the paging device performs paging through a satellite base station corresponding to the tracking area where the terminal is currently located, the paging device directly sends a paging request to the satellite base station to perform paging through the satellite base station; or
  • the paging device sends a paging request to the satellite base station through a ground base station to perform paging through the satellite base station.
  • the paging device is an AMF entity
  • the AMF entity regardless of whether the AMF entity directly sends the paging request to the satellite base station or forwards the paging request to the satellite base station through the ground base station, the AMF entity eventually searches through the determined satellite base station Shout to reduce waste of resources.
  • the paging device is a ground base station
  • the paging device determines that the terminal needs to be paged after receiving the paging request carrying the area identifier of the tracking area.
  • the ground base station determines that the terminal needs to be paged, indicating that when the paging device is a ground base station, the ground base station cannot be casual Determines whether the terminal performs paging, but determines that the terminal needs to be paged after receiving a specific instruction, which makes the execution of the paging process more accurate and reduces waste of resources.
  • the paging device is a ground base station
  • the paging device determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the paging device determines the tracking area where the terminal is currently located according to the received area identifier of the tracking area where the terminal is currently located;
  • the paging device determines the satellite base station corresponding to the tracking area where the terminal is currently located according to the correspondence between the satellite base station and the tracking area in the current coverage area.
  • the ground base station determines the tracking area according to the received area identifier, and determines the satellite base station corresponding to the tracking area where the terminal is currently located according to the correspondence.
  • the ground base station can accurately determine the satellite currently covering the tracking area where the terminal is currently located.
  • the base station further performs paging through the satellite base station currently covering the tracking area where the terminal is currently located, so that paging is transmitted more accurately and smoothly, and waste of resources is reduced.
  • the paging device determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the following manner:
  • the paging device receives ephemeris information and antenna parameters reported by the satellite base station, and determines the current coverage area of the satellite base station according to the ephemeris information and antenna parameters;
  • the paging device determines the tracking area in the current coverage area of the satellite base station according to the determined current coverage area of the satellite base station and the set tracking area;
  • the paging device determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the tracking area in the current coverage area of the satellite base station.
  • the ground base station can determine the current satellite coverage area based on the ephemeris information and antenna parameters of the satellite base station. Since the tracking area is preset, the location of the tracking area will not change. When the current coverage area of the satellite base station changes , The tracking area in the current coverage area of the satellite base station will change, so the correspondence can be updated in real time according to the coverage area of the satellite base station. After determining the satellite base station according to the tracking area, the determined satellite base station must be the satellite base station covering the tracking area When paging through the satellite base station covering the tracking area, accurate paging and reduce waste of resources.
  • an embodiment of the present application provides a method for updating a correspondence, the method includes:
  • the satellite information management entity determines the current coverage area of the satellite base station based on the received ephemeris information and antenna parameters of the satellite base station;
  • the satellite information management entity determines the tracking area in the current coverage area of the satellite base station based on the determined current coverage area of the satellite base station and the set tracking area;
  • the satellite information management entity updates the correspondence between the satellite base station and the tracking area in the current coverage area according to the tracking area in the current coverage area of the satellite base station.
  • the correspondence between the satellite base station and the tracking area in the current coverage area can be updated according to the satellite's ephemeris information and antenna parameters, so that when the corresponding satellite base station is paged according to the tracking area where the terminal is currently located, it can be based on The latest correspondence finds the satellite base station corresponding to the tracking area where the terminal is currently located. Since the acquired service area of the satellite base station includes the tracking area where the terminal is currently located, the satellite base station can smoothly page and reduce the paging failure rate. Reduce waste of resources.
  • an embodiment of the present application provides a paging device, which includes: a processor, a memory, and a transceiver;
  • the processor is used to read the program in the memory and execute:
  • the processor is an AMF entity
  • the processor determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the processor is an AMF entity
  • the processor is specifically used for:
  • the processor is a ground base station
  • the processor is specifically used for:
  • the processor is a ground base station
  • the processor determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the satellite base station According to the correspondence between the satellite base station and the tracking area in the current coverage area, determine the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the processor determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the following manner:
  • the correspondence between the satellite base station and the tracking area in the current coverage area is determined according to the tracking area in the current coverage area of the satellite base station.
  • an embodiment of the present application provides a device for updating correspondence, the device includes: a processor, a memory, and a transceiver;
  • the processor is used to read the program in the memory and execute:
  • the correspondence between the satellite base station and the tracking area in the current coverage area is updated according to the tracking area in the current coverage area of the satellite base station.
  • an embodiment of the present application provides a paging device, which includes:
  • the first determining module is used to determine the need to page for the terminal
  • the paging module is used for paging through the satellite base station corresponding to the tracking area where the terminal is currently located, wherein the satellite base station corresponding to the current tracking area is based on the correspondence between the satellite base station and the tracking area in the current coverage area definite.
  • an embodiment of the present application provides a device for updating correspondence, which includes:
  • a second determining module configured to determine the current coverage area of the satellite base station based on the received ephemeris information and antenna parameters of the satellite base station;
  • a third determining module configured to determine the tracking area in the current coverage area of the satellite base station based on the determined current coverage area of the satellite base station and the set tracking area;
  • the update module is configured to update the correspondence between the satellite base station and the tracking area in the current coverage area according to the tracking area in the current coverage area of the satellite base station.
  • an embodiment of the present application further provides a computer storable medium on which a computer program is stored, which when executed by the processor implements any method step when paging or any time when the correspondence is updated The steps of the method.
  • FIG. 1 is a flowchart of a paging method provided by an embodiment of the present application
  • FIG. 2 is a flowchart of a method for updating a correspondence between a satellite base station and a tracking area in a current coverage area provided by an embodiment of this application;
  • FIG. 3 is a schematic diagram of a satellite base station and a tracking area corresponding to each other when the satellite base station does not obtain ephemeris information and antenna parameters according to an embodiment of the present application;
  • FIG. 4 is a schematic diagram of a satellite base station and a tracking area in the current coverage area corresponding to each other after the satellite base station determines the current coverage area according to ephemeris information and antenna parameters according to an embodiment of the present application;
  • FIG. 5 is a flowchart of a first overall method for paging provided by an embodiment of this application.
  • FIG. 6 is a flowchart of a second overall paging method provided by an embodiment of this application.
  • FIG. 7 is a flowchart of a third overall paging method provided by an embodiment of this application.
  • FIG. 8 is a structural diagram of a first paging device provided by an embodiment of this application.
  • FIG. 9 is a structural diagram of a second paging device provided by an embodiment of this application.
  • FIG. 10 is a structural diagram of a first device for updating correspondence according to an embodiment of the present application.
  • FIG. 11 is a structural diagram of a second device for updating correspondence according to an embodiment of the present application.
  • the term “plurality” refers to two or more, and other quantifiers are similar.
  • the paging device needs to send a paging request to the network side device in the tracking area of the terminal's registration area, so that the network side device performs paging after receiving the paging request.
  • 3GPP is studying the support of satellite access in 5G systems to ensure the coverage of land mobile networks.
  • satellite access is implemented by using large NR base stations on the satellite, that is, wireless coverage of satellite access.
  • the wireless coverage of land access is NR type. Therefore, according to the prior art, when the 5G core network triggers the paging process, the AMF entity needs to send a paging request to the base station in the TA area of the UE's registration area, but for non-synchronous satellites, the satellites in the TA area are dynamic Changes, can not be accurately paging, wasting resources.
  • the present application is directed to the above scenario.
  • the paging device determines, according to the correspondence between the satellite base station and the tracking area in the current coverage area, the satellite base station corresponding to the tracking area where the terminal is currently located, and passes The satellite base station corresponding to the current tracking area is used for paging.
  • the satellite base station is not a set satellite base station, but a satellite base station serving the area where the terminal is currently located. Therefore, when the terminal performs paging through the base station The satellite base station can accurately perform paging and reduce the waste of resources.
  • the terminal device is a device with wireless communication function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air ( (Such as airplanes, balloons and satellites, etc.).
  • the terminal device may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, or an augmented reality (augmented reality, AR) terminal device 1.
  • the wireless terminal device in industrial control, the wireless terminal device in self-driving, the wireless terminal device in remote medical, and the smart grid The wireless terminal device in wireless, the wireless terminal device in transportation safety, the wireless terminal device in smart city, the wireless terminal device in smart home, etc. ; Can also be various forms of UE, mobile station (mobile station, MS), the terminal device (terminal).
  • the network-side device is a device that provides a wireless communication function for the terminal device, including but not limited to: a base station gNB in 5G, a radio network controller (radio network controller, RNC), and a node B (node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (eg, home evolved node B, or home node B, HNB), baseband unit (BaseBand Unit, BBU) , Transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc.
  • the base station in this application may also be a device that provides a wireless communication function for the terminal device in other communication systems that may appear in the future.
  • FIG. 1 it is a flowchart of a paging method provided by an embodiment of the present application, specifically including the following steps;
  • Step 100 the paging device determines that the terminal needs to be paged
  • Step 110 the paging device performs paging through the satellite base station corresponding to the tracking area where the terminal is currently located, wherein the satellite base station corresponding to the current tracking area is based on the satellite base station and the tracking area in the current coverage area Correspondence is determined.
  • the paging device after the paging device determines to page for the terminal, the paging device performs paging through the satellite base station corresponding to the tracking area where the terminal is currently located, wherein the satellite base station corresponding to the tracking area where the terminal is currently located is based on The correspondence between the satellite base station and the tracking area in the current coverage area is determined; as the satellite base station used for paging in this application is the satellite base station corresponding to the tracking area where the terminal is currently located, and the current coverage area of the satellite base station (ie The tracking area exists in the service area of the satellite base station. There is no storage of the tracking area in the coverage area of the satellite base station corresponding to the tracking area after the position of the satellite base station changes. Therefore, the terminal performs During paging, the satellite base station can perform paging accurately, reducing waste of resources.
  • the paging device After determining that the terminal needs to be paged, the paging device determines the satellite base station currently covering the tracking area according to the tracking area included in the acquired UE registration area of the terminal, because different paging devices determine that the terminal needs to page After that, the method of determining the satellite base station is different, and the paging device can be divided into an AMF entity and a ground base station.
  • Embodiment 1 The paging device is an AMF entity.
  • the paging device is an AMF entity
  • the AMF entity receives downlink signaling triggered by the 5G core network for the idle UE, the AMF entity determines that paging needs to be initiated.
  • the AMF entity determines the current UE registration area from the user equipment context (User Equipment context, UE context).
  • user equipment context User Equipment context, UE context
  • the registration area of the UE is a registration area allocated by the AMF entity to the UE when the terminal accesses the network through an asynchronous satellite, and the allocated registration area of the UE is stored in the context of the UE.
  • the AMF entity can directly determine the tracking area, that is, the tracking area where the terminal is currently located; and then determine the satellite base station according to the tracking area where the terminal is currently located.
  • the paging device determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the paging device sends the area identifier of the tracking area where the terminal is currently located to a satellite information management entity, so that the satellite information management entity determines a satellite base station according to the corresponding relationship;
  • the paging device uses the satellite base station notified by the satellite information management entity as the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the AMF entity determines the registration area of the UE, where the registration area of the UE includes a tracking area, and after determining the tracking area where the terminal is currently located, the The area identifier of the tracking area where the terminal is currently sent to the satellite information management entity. Since the correspondence between the satellite base station and the tracking area is stored in the satellite information management entity, the correspondence between the satellite information management entity is the satellite base station and the current coverage. Correspondence between the tracking areas in the area.
  • the satellite information management entity determines the satellite base station corresponding to the received tracking area according to the corresponding relationship stored by itself, and will determine the satellite base station corresponding to the received tracking area.
  • the determined satellite base station informs the AMF entity;
  • the AMF entity receives the satellite base station notified by the satellite information management entity, and uses the satellite base station notified by the satellite information management entity as the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the AMF entity determines that the tracking area where the terminal is currently located is tracking area 1, and the area identifier of the tracking area 1 is TA1, and sends the area identifier TA1 of the tracking area where the terminal is currently located to the satellite information management entity.
  • the satellite base station corresponds to the satellite base station and the currently covered tracking area (the tracking area currently covered by satellite 1 is tracking area 1, tracking area 2, tracking area 5, and tracking area 6; the tracking area currently covered by satellite 2 is tracking area 3; satellite 3
  • the tracking area currently covered is satellite 4)
  • Determine the area identifier TA1 of the tracking area as tracking area 1 determine the satellite base station corresponding to tracking area 1 as satellite 1 according to the corresponding relationship, and notify satellite 1 to the AMF entity to make the AMF entity pass Satellite 1 performs paging.
  • the paging device will send the area identifier of the tracking area where the terminal is currently located to the satellite information management entity, because the satellite information management entity stores the correspondence between the satellite base station and the tracking area in the current coverage area Therefore, the satellite base station received by the paging device is a satellite base station corresponding to the tracking area where the terminal is currently located, that is, the satellite base station acquired by the paging device is a satellite base station covering the tracking area where the terminal is currently located, Ensure that when paging through the acquired satellite base station, the paging process is smooth and resource waste is reduced.
  • the satellite information management entity may update the correspondence between the satellite base station and the tracking area in the current coverage area according to the satellite beam search range of the satellite base station, that is, the pre-planned tracking area, as shown in FIG. 2
  • the flowchart of the method for updating the correspondence between the satellite base station and the tracking area in the current coverage area includes the following steps:
  • Step 200 The satellite information management entity determines the current coverage area of the satellite base station according to the received ephemeris information and antenna parameters of the satellite base station;
  • Step 210 The satellite information management entity determines the tracking area in the current coverage area of the satellite base station based on the determined current coverage area of the satellite base station and the set tracking area;
  • Step 220 The satellite information management entity updates the correspondence between the satellite base station and the tracking area in the current coverage area according to the tracking area in the current coverage area of the satellite base station.
  • the satellite base station obtains its own ephemeris information and antenna parameters in real time, and sends the obtained ephemeris information and antenna parameters to the satellite information management entity;
  • the satellite information management entity calculates the radiation range of the satellite beam according to the reported ephemeris information and antenna parameters, that is, the current coverage area of the satellite base station;
  • the coverage area of the satellite base station can be determined according to the antenna parameters of the satellite base station.
  • the coverage area of the satellite base station changes; the location of the satellite base station is determined according to the ephemeris information of the satellite base station. After the ephemeris information changes, the position of the satellite base station changes.
  • the satellite information management entity determines whether the tracking area in the current coverage area of the satellite base station changes according to the pre-planned tracking area. If the current coverage area of the satellite base station changes, then the The tracking area in the current coverage area of the satellite base station changes, determine the tracking area in the current coverage area of the satellite base station, and according to the determined tracking area in the current coverage of the satellite base station, the correspondence between the satellite base station and the tracking area in the current coverage area To update.
  • FIG. 3 it is a schematic diagram of the satellite base station and the tracking area corresponding to each other when the satellite base station does not obtain ephemeris information and antenna parameters in the embodiment of the present application;
  • the filled area is the coverage area of satellite 2 and the blank area is the coverage area of satellite 3;
  • TA indicates the area identification of the tracking area, for example, tracking area 1 is indicated as TA1;
  • the tracking area in the coverage area of satellite 1 is tracking area 1, tracking area 4, and tracking area 5, and it is determined that satellite 1 corresponds to tracking area 1, tracking area 4, and tracking area 5; the coverage area of satellite 2
  • the tracking area in is the tracking area 2, the tracking area 3, and the tracking area 6, and it is determined that the satellite 2 corresponds to the tracking area 2, the tracking area, and the tracking area 6.
  • the current coverage of the satellite base station changes, so the tracking area within the coverage area changes; specifically, as shown in FIG.
  • the ephemeris information and antenna parameters of the satellite base station determine the current coverage area of the satellite base station, a schematic diagram of the satellite base station and the tracking area in the current coverage area corresponding to each other.
  • the bar filled part is the coverage area of satellite 1
  • the grid filled part is the coverage area of satellite 2
  • the blank part is the coverage area of satellite 3;
  • the coverage area of satellite 1 has changed from the three areas on the edge to the four areas in the middle.
  • the four areas in the middle are the coverage areas of satellite 1. Since the tracking area is planned in advance, that is, tracking The location of the passing area will not change due to the movement of the satellite. Therefore, when the position of the satellite base station changes, the current coverage area of the satellite base station changes, and the tracking area in the current coverage area of the satellite base station changes; the current coverage area of the satellite 1
  • the tracking area in is tracking area 1, tracking area 2, tracking area, tracking area 6, so the correspondence between satellite 1 and the tracking area in the current coverage area is updated to the tracking area corresponding to satellite 1 is tracking area 1, tracking area 2. Tracking area 5, tracking area 6;
  • the satellite information management entity can only be used to update the correspondence between the satellite base station and the tracking area in the coverage area; it can also be used to both update the correspondence between the satellite base station and the tracking area within the coverage area.
  • the satellite information management entity can be deployed inside the AMF entity or outside the AMF entity.
  • the satellite information management entity is deployed outside the AMF entity, it is mainly deployed in network storage Library function (Network Repository Function, NRF) entity.
  • NRF Network Repository Function
  • the NRF entity when the satellite information management entity is deployed inside the NRF entity, if the satellite information management entity can only update the correspondence between the satellite base station and the tracking area in the current coverage area, the NRF entity is used to store the updated satellite base station of the satellite information management entity Correspondence with the tracking area in the current coverage area; or
  • the satellite information management entity can not only update the correspondence between the satellite base station and the tracking area in the current coverage area, but also store the correspondence between the updated satellite base station and the tracking area in the current coverage area, the satellite management entity is directly deployed in Inside the NRF entity, the NRF entity may not have the function of storing the corresponding relationship.
  • the correspondence between the satellite base station and the tracking area in the current coverage area can be updated according to the satellite's ephemeris information and antenna parameters.
  • the position of the satellite base station changes, the current coverage area of the satellite base station changes, and the satellite base station is determined.
  • the tracking area in the current coverage area, and the correspondence between the satellite base station and the tracking area is updated according to the determined tracking area in the current coverage area of the satellite base station, so that the corresponding satellite base station determined according to the current tracking area of the terminal is paged
  • you can find the satellite base station corresponding to the tracking area where the terminal is currently located according to the latest correspondence instead of acquiring the satellite base station corresponding to the tracking area where the terminal is currently located according to the fixed correspondence, because the service area of the acquired satellite base station includes The tracking area where the terminal is currently located, so the satellite base station can perform paging smoothly, reduce the paging failure rate, and reduce the waste of resources.
  • the paging device After the paging device determines the satellite base station corresponding to the tracking area where the current area is located according to the tracking area where the terminal is currently located, the paging device searches through the satellite base station corresponding to the tracking area where the terminal is currently located When calling, determine whether the paging device can directly sense the satellite base station;
  • the paging device directly senses the satellite base station, the paging device directly sends a paging request to the satellite base station to perform paging through the satellite base station;
  • the paging device If the paging device cannot sense the topology of the satellite base station, the paging device sends a paging request to the satellite base station through the ground base station to perform paging through the satellite base station.
  • Case 1 The paging device directly sends the paging request to the satellite base station to perform paging through the satellite base station.
  • the AMF entity can sense the satellite base station, and after the AMF entity determines the satellite base station corresponding to the tracking area where the terminal is currently located, it can directly send the corresponding identification information of the obtained satellite base station to the The satellite base station sends a paging request to perform paging through the satellite base station.
  • the satellite information management entity is deployed in the NRF entity, and the satellite information management entity has the function of updating and storing the corresponding relationship.
  • the AMF entity When the AMF entity receives the downlink signaling for the idle UE triggered by the 5G core network, the AMF entity determines that paging needs to be initiated.
  • the AMF entity determines the current UE registration area from the UE context. Since the registration area of the UE includes a tracking area, after determining the registration area of the UE, the AMF entity directly determines the tracking area where the terminal is currently located;
  • AMF determines that the registration area of UE1 is registration area A, where registration area A contains tracking area 1 (TA1); the AMF will determine that the tracking area where UE1 is currently located is Tracking area 1;
  • TA1 tracking area 1
  • the AMF entity sends the determined area identifier of the tracking area where the terminal is currently located to the NRF entity, that is, to the satellite information management entity within the NRF entity, so that the satellite information management entity is based on the satellite base station and the current coverage area.
  • the NRF entity determines the satellite base station corresponding to the tracking area where the terminal is currently located, and notify the AMF entity of the determined satellite base station corresponding to the tracking area where the terminal is currently located;
  • the AMF entity sends the identification area TA1 that determines the current tracking area of UE1 as the tracking area 1 to the NRF entity; so that the satellite information management entity deployed inside the NRF entity can store the tracking information corresponding to “satellite 1”
  • the tracking area is tracking area 1, tracking area 2, tracking area 5, tracking area 6;
  • the tracking area corresponding to satellite 2 is tracking area 3;
  • the tracking area corresponding to satellite 3 is tracking area 4 ", and the satellite base station corresponding to TA1 is determined Satellite 1 and notify AMF entity of Satellite 1;
  • the AMF entity can directly sense the satellite base station, after determining the satellite base station corresponding to the tracking area where the terminal is currently located, the AMF entity sends a paging request to the satellite base station corresponding to the tracking area where the terminal is currently located, so that Paging the satellite base station corresponding to the tracking area where the terminal is currently located;
  • the AMF entity After receiving the satellite 1 returned by the NRF entity, the AMF entity sends a paging request to the satellite 1.
  • FIG. 5 it is a flowchart of a first overall method for paging provided by an embodiment of the present application, and specifically includes the following steps;
  • Step 500 the AMF entity receives downlink signaling / notification (Downlink signaling / notification, DL signaling / notification) for the idle UE;
  • Step 510 the AMF entity determines the tracking area where the terminal is currently located from the UE context
  • Step 520 the AMF entity sends the area identifier of the tracking area where the terminal is currently located to the NRF entity;
  • the satellite information management entity is deployed in the NRF entity;
  • Step 530 The NRF entity determines the acquired satellite base station corresponding to the tracking area where the terminal is currently located according to the correspondence between the satellite base station and the tracking area in the current coverage area;
  • Step 540 The NRF entity notifies the AMF entity of the determined satellite base station corresponding to the tracking area where the terminal is currently located;
  • the AMF entity receives the satellite base station notified by the NRF entity, and sends a paging request to the satellite base station.
  • Case 2 The paging device sends the paging request to the satellite base station through the ground base station to perform paging through the satellite base station.
  • the paging process when the satellite base station and the AMF entity are connected by the ground base station is connected to the AMF entity.
  • the AMF cannot perceive the topology of the satellite base station. Sensing the satellite base station, the ground base station corresponding to the satellite base station needs to forward the paging request to the satellite base station to perform paging through the satellite base station.
  • the satellite information management entity is deployed in the NRF entity, and the satellite information management entity has the function of updating and storing the corresponding relationship.
  • the AMF entity determines that paging needs to be initiated.
  • the AMF entity determines the current UE registration area from the UE context. Since the registration area of the UE includes a tracking area, after determining the registration area of the UE, the AMF entity directly determines the tracking area where the terminal is currently located;
  • AMF determines that the registration area of UE1 is registration area A, where registration area A contains tracking area 1 (TA1) and tracking area 3 (TA3); the AMF will determine UE1 The current tracking area is tracking area 1 and tracking area 3.
  • the AMF entity sends the determined area identifier of the tracking area where the terminal is currently located to the NRF entity, that is, to the satellite information management entity within the NRF entity, so that the satellite information management entity stores the satellite base station and Correspondence of the tracking areas in the current coverage area, determine the satellite base station corresponding to the tracking area where the terminal is currently located, and notify the AMF entity of the determined satellite base station corresponding to the tracking area where the terminal is currently located;
  • the AMF entity sends the tracking area 1 and the tracking area 3 corresponding to the tracking area 1 and the tracking area 3 to the satellite information management entity.
  • the satellite information management entity stores “the tracking area corresponding to satellite 1 is tracking area 1, tracking area 2, tracking area 5, and tracking area 6; the tracking area corresponding to satellite 2 is tracking area 3; the tracking corresponding to satellite 3 The area is the corresponding relationship of the tracking area 4 ", so it can be determined that the satellite base station corresponding to TA1 is satellite 1, and the satellite base station corresponding to TA3 is satellite 2, and the satellite 1 and satellite 2 are notified to the AMF entity;
  • the AMF entity Because the AMF entity cannot perceive the topology of the satellite base station, the AMF entity needs to send a paging request to the satellite base station through the ground base station;
  • the AMF entity After the AMF entity receives the satellite base station notified by the satellite information management entity, the AMF entity determines the ground base station corresponding to the satellite base station according to the satellite base station notified by the satellite information management entity and its own configuration information, and sends a search to the determined ground base station A paging request, and the paging request carries a satellite base station identifier, or some related satellite base station identifiers, so that the ground base station receives the paging request carrying the satellite base station identifier, The corresponding satellite base station sends a paging request, and then the satellite base station sends a paging message in the corresponding tracking area;
  • the satellite base stations received by the AMF entity are satellite 1 and satellite 2; if the ground base station corresponding to satellite 1 is ground base station A and the ground base station corresponding to satellite 2 is ground base station B; the AMF entity sends a carrier to ground base station A A paging request with the satellite 1 and the area identification (TA1) of the tracking area, sends a paging request with the satellite 2 and the area identification (TA3) of the tracking area to the ground base station B;
  • the ground base station A sends a paging request carrying the area identification (TA1) of the tracking area to the satellite 1, so that the satellite 1 sends a paging message in the tracking area 1 in its coverage area;
  • the ground base station B sends
  • the satellite 2 sends a paging request carrying an area identifier (TA3) of the tracking area, so that the satellite 2 sends a paging message in the tracking area 3 in its coverage area.
  • TA1 area identification
  • TA3 area identifier
  • FIG. 6 it is a flowchart of a second overall paging method provided by an embodiment of the present application, and specifically includes the following steps;
  • Step 600 the AMF entity receives DL signaling / notification for the idle UE
  • Step 610 The AMF entity determines the tracking area where the terminal is currently located from the UE context;
  • Step 620 the AMF entity sends the area identifier of the tracking area where the terminal is currently located to the NRF entity;
  • the satellite information management entity is deployed in the NRF entity;
  • Step 630 The NRF entity determines the acquired satellite base station corresponding to the tracking area where the terminal is currently located according to the correspondence between the satellite base station and the tracking area in the current coverage area;
  • Step 640 the NRF entity notifies the AMF entity of the determined satellite base station corresponding to the tracking area where the terminal is currently located;
  • Step 650 The AMF entity determines the ground base station corresponding to the satellite base station according to the acquired satellite base station corresponding to the tracking area where the terminal is currently located;
  • the correspondence between the ground base station and the satellite base station is pre-configured
  • Step 660 The AMF entity sends a paging request to the ground base station corresponding to the satellite base station, where the paging request carries identification information of the satellite base station;
  • Step 670 After receiving the paging request carrying the identification information of the satellite base station, the ground base station sends a paging request to the satellite base station corresponding to the identification information of the satellite base station, so that the satellite base station performs paging.
  • the paging device when the paging device is an AMF entity, it is determined whether the AMF entity directly sends the paging request to the satellite base station or forwards the paging request to the satellite base station through the ground base station according to whether the AMF entity can sense the satellite base station, In either case, the AMF entity will eventually page through the determined satellite base station to reduce resource waste.
  • Embodiment 2 The paging device is a ground base station.
  • the paging device determines that the terminal needs to be paged after receiving the paging request carrying the area identifier of the tracking area.
  • the paging request received by the ground base station carrying the area identifier of the tracking area is sent by the AMF entity to the ground base station after receiving the DL signaling / notification triggered by the 5G core network.
  • the AMF entity determines the current UE registration area from the UE context. Since the registration area of the UE includes a tracking area, after determining the registration area of the UE, the AMF entity directly determines the tracking area where the terminal is currently located;
  • the AMF entity determines the ground base station currently serving the tracking area according to the tracking area where the terminal is currently located in the registration area of the UE; since the coverage area of the ground base station is fixed and the AMF The correspondence between the tracking area and the coverage area of the ground base station is stored in the entity;
  • the AMF entity can determine the coverage area of the ground base station, and then determine the ground base station corresponding to the coverage area;
  • the AMF entity After determining the ground base station serving the tracking area where the terminal is currently located, the AMF entity sends a paging request to the ground base station carrying the area identifier of the tracking area where the terminal is currently located, so that the ground base station determines The terminal needs to be paged, and the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the ground base station when the paging device is a ground base station, after receiving the paging request carrying the area identifier of the tracking area, the ground base station determines that the terminal needs to be paged, indicating that when the paging device is a ground base station, The ground base station cannot casually determine whether the terminal performs paging, but determines that the terminal needs to be paged after receiving a specific instruction, which makes the paging process more accurate and reduces waste of resources.
  • the ground base station determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the paging device determines the tracking area where the terminal is currently located according to the received area identifier of the tracking area where the terminal is currently located;
  • the paging device determines the satellite base station corresponding to the tracking area where the terminal is currently located according to the correspondence between the satellite base station and the tracking area in the current coverage area.
  • the ground base station may be based on the current location of the terminal carried in the paging request Determine the tracking area by the area identifier of the tracking area, and determine the satellite base station according to the correspondence between the stored satellite base station and the tracking area in the current coverage area;
  • the area identifier of the tracking area carried in the paging request received by the ground base station is TA1, and TA1 represents tracking area 1;
  • the corresponding relationship updated and stored in the ground base station is: the tracking area currently covered by satellite 1 is tracking area 1, tracking Area 2, tracking area 5, tracking area 6, the tracking area currently covered by satellite 2 is tracking area 3, and the tracking area currently covered by satellite 3 is tracking area 4;
  • the ground base station After determining that the satellite base station corresponding to the tracking area where the terminal is currently located is the satellite 1, the ground base station sends a paging request to the satellite 1 carrying the area identifier of the tracking area where the terminal is currently located, so that the satellite 1 Send a paging message in the tracking area corresponding to the area identification of the tracking area in the current coverage area according to the received area identification of the tracking area.
  • the ground base station determines the tracking area according to the received area identifier, and determines the satellite base station corresponding to the tracking area where the terminal is currently located according to the correspondence.
  • the ground base station can accurately determine the current coverage area of the tracking area where the terminal is currently located.
  • the paging device determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the following manner:
  • the paging device receives ephemeris information and antenna parameters reported by the satellite base station, and determines the current coverage area of the satellite base station according to the ephemeris information and antenna parameters;
  • the paging device determines the tracking area in the current coverage area of the satellite base station according to the determined current coverage area of the satellite base station and the set tracking area;
  • the paging device determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the tracking area in the current coverage area of the satellite base station.
  • the satellite base station obtains its own ephemeris information and antenna parameters in real time, and sends the obtained ephemeris information and antenna parameters to the ground base station;
  • the ground base station estimates the irradiation range of the satellite beam according to the reported ephemeris information and antenna parameters, that is, the current coverage area of the satellite base station;
  • the ground base station After determining the current coverage area of the satellite base station, the ground base station determines whether the tracking area in the current coverage area of the satellite base station changes according to the pre-planned tracking area. If the current coverage area of the satellite base station changes, the satellite base station The tracking area in the current coverage area changes, determine the tracking area in the current coverage area of the satellite base station, and determine the correspondence between the satellite base station and the tracking area in the current coverage area based on the determined tracking area within the current coverage of the satellite base station; See the implementation of satellite information management entity.
  • the ground base station not only has the function of updating the correspondence between the satellite base station and the tracking area in the current coverage area, but also has the function of storing the updated correspondence.
  • the ground base station can determine the current coverage area of the satellite according to the ephemeris information and antenna parameters of the satellite base station. Since the tracking area is preset, the location of the tracking area will not change. When the current coverage area of the satellite base station changes After that, the tracking area in the current coverage area of the satellite base station will change. Determine the tracking area in the satellite base station and the current coverage area. Since the correspondence can be updated in real time according to the coverage area of the satellite base station, after determining the satellite base station according to the tracking area The determined satellite base station must be the satellite base station covering the tracking area. When paging through the satellite base station covering the tracking area, accurate paging will reduce resources.
  • FIG. 7 it is a flowchart of a third overall paging method provided by an embodiment of this application, specifically including the following steps;
  • Step 700 the ground base station receives a paging request carrying the area identifier of the tracking area
  • the paging request received by the ground carrying the area identifier of the tracking area is sent by the AMF entity to the ground base station after receiving the DL signaling / notification triggered by the 5G core network;
  • the ground base station After receiving the paging request carrying the area identifier of the tracking area, the ground base station determines that the terminal needs to be paged;
  • Step 710 The ground base station determines the satellite base station corresponding to the tracking area carried in the paging request according to the stored correspondence between the satellite base station and the tracking area in the current coverage area;
  • Step 720 The ground base station sends a paging request carrying the area identifier of the tracking area to the determined satellite base station, so that the satellite base station sends a paging message in the tracking area.
  • an embodiment of the present application also provides a paging device, because the device corresponds to the device corresponding to the paging method of the embodiment of the present application, and the principle of the device to solve the problem and the method Similar, so the implementation of the device can refer to the implementation of the method, and the repetition is not repeated here.
  • the first paging device includes a processor 800, a memory 801, and a transceiver 802;
  • the processor 800 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 800 when performing operations.
  • the transceiver 802 is used to receive and transmit data under the control of the processor 800.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 800 and various circuits of the memory represented by the memory 801 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the processor 800 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 800 when performing operations.
  • the process disclosed in the embodiments of the present application may be applied to the processor 800 or implemented by the processor 800.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 800 or instructions in the form of software.
  • the processor 800 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory 801.
  • the processor 800 reads the information in the memory 801 and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 800 is configured to read the program in the memory 801 and execute:
  • the processor 800 is an AMF entity
  • the processor 800 determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the processor 800 is an AMF entity
  • the processor 800 is specifically used to:
  • the processor 800 is a ground base station
  • the processor 800 is specifically used to:
  • the processor 800 is a ground base station
  • the processor 800 determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the satellite base station According to the correspondence between the satellite base station and the tracking area in the current coverage area, determine the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the processor 800 determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the following manner:
  • the correspondence between the satellite base station and the tracking area in the current coverage area is determined according to the tracking area in the current coverage area of the satellite base station.
  • the device includes: a first determining module 900 and a paging module 910;
  • the first determining module 900 is configured to determine that paging is required for the terminal
  • the paging module 910 is configured to page through the satellite base station corresponding to the tracking area where the terminal is currently located, wherein the satellite base station corresponding to the current tracking area is based on the satellite base station and the tracking area in the current coverage area The corresponding relationship is determined.
  • the paging device is an AMF entity
  • the paging module 910 determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the paging device is an AMF entity
  • the paging module 910 is specifically used to:
  • the paging device is a ground base station
  • the first determining module 900 is specifically used to:
  • the paging device is a ground base station
  • the paging module 910 determines the satellite base station corresponding to the tracking area where the terminal is currently located in the following manner:
  • the satellite base station According to the correspondence between the satellite base station and the tracking area in the current coverage area, determine the satellite base station corresponding to the tracking area where the terminal is currently located.
  • the paging module 910 determines the correspondence between the satellite base station and the tracking area in the current coverage area according to the following manner:
  • the correspondence between the satellite base station and the tracking area in the current coverage area is determined according to the tracking area in the current coverage area of the satellite base station.
  • an embodiment of the present application also provides a device for updating the correspondence, because the device corresponds to a device corresponding to the method for updating the correspondence in the embodiment of the present application, and the principle of the device to solve the problem and the method Similar, so the implementation of the device can refer to the implementation of the method, and the repetition is not repeated here.
  • a first device for updating correspondence in an embodiment of the present application includes a processor 1000, a memory 1001, and a transceiver 1002;
  • the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 may store data used by the processor 1000 when performing operations.
  • the transceiver 1002 is used to receive and transmit data under the control of the processor 1000.
  • the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by the processor 1000 and various circuits of the memory represented by the memory 1001 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article.
  • the bus interface provides an interface.
  • the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1001 may store data used by the processor 1000 when performing operations.
  • the process disclosed in the embodiments of the present application may be applied to the processor 1000 or implemented by the processor 1000.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 1000 or an instruction in the form of software.
  • the processor 1000 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory 1001, and the processor 1000 reads the information in the memory 1001 and completes the steps of the signal processing flow in combination with its hardware.
  • the processor 1000 is configured to read the program in the memory 1001 and execute:
  • the correspondence between the satellite base station and the tracking area in the current coverage area is updated according to the tracking area in the current coverage area of the satellite base station.
  • this is a device for updating correspondence according to an embodiment of the present application.
  • the device includes: a second determining module 1100, a third determining module 1110, and an updating module 1120;
  • the second determining module 1100 is configured to determine the current coverage area of the satellite base station according to the received ephemeris information and antenna parameters of the satellite base station;
  • the third determining module 1110 is configured to determine the tracking area in the current coverage area of the satellite base station based on the determined current coverage area of the satellite base station and the set tracking area;
  • the update module 1120 is configured to update the correspondence between the satellite base station and the tracking area in the current coverage area according to the tracking area in the current coverage area of the satellite base station.
  • the application can also be implemented in hardware and / or software (including firmware, resident software, microcode, etc.).
  • the present application may take the form of a computer-usable or computer-readable storage medium on a computer-readable storage medium with computer-usable or computer-readable program code implemented in the medium to be used by an instruction execution system or Used in conjunction with an instruction execution system.
  • a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with an instruction execution system, Use of device or equipment.

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Abstract

La présente invention concerne un procédé et un dispositif de radiomessagerie et un procédé et un dispositif de mise à jour de correspondance, destinés à être utilisés pour résoudre les problèmes de l'état de la technique du taux de défaillance de radiomessagerie élevé et de gaspillage de ressources pendant une radiomessagerie au moyen de stations de base de satellite asynchrones. Le dispositif de radiomessagerie de la présente invention détermine que la radiomessagerie est requise pour un terminal ; le dispositif de radiomessagerie effectue une radiomessagerie au moyen d'une station de base satellite correspondant à une zone de suivi où se trouve actuellement le terminal, ladite station de base satellite étant déterminée en fonction des correspondances entre les stations de base satellites et la zone de suivi dans la zone de couverture actuelle. La station de base satellite utilisée pour une radiomessagerie dans la présente invention est la station de base satellite correspondant à la zone de suivi où se trouve actuellement le terminal ; de plus, la zone de suivi existe dans la zone de couverture actuelle de la station de base satellite et il n'y a aucun cas où la zone de suivi n'existe pas dans la zone de couverture de la station de base satellite correspondant à la zone de suivi après que la position de la station de base satellite change. Par conséquent, la station de base satellite peut effectuer une radiomessagerie avec précision et réduire le gaspillage de ressources.
PCT/CN2019/112360 2018-11-02 2019-10-21 Procédé et dispositif de radiomessagerie et procédé et dispositif de mise a jour de correspondance WO2020088291A1 (fr)

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