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WO2025189386A1 - Procédé de radiomessagerie, dispositif de réseau d'accès, dispositif de réseau central et support d'enregistrement - Google Patents

Procédé de radiomessagerie, dispositif de réseau d'accès, dispositif de réseau central et support d'enregistrement

Info

Publication number
WO2025189386A1
WO2025189386A1 PCT/CN2024/081391 CN2024081391W WO2025189386A1 WO 2025189386 A1 WO2025189386 A1 WO 2025189386A1 CN 2024081391 W CN2024081391 W CN 2024081391W WO 2025189386 A1 WO2025189386 A1 WO 2025189386A1
Authority
WO
WIPO (PCT)
Prior art keywords
network device
information
access network
paging
terminal
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/081391
Other languages
English (en)
Chinese (zh)
Inventor
毛玉欣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
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 Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2024/081391 priority Critical patent/WO2025189386A1/fr
Priority to CN202480006036.2A priority patent/CN120435899A/zh
Publication of WO2025189386A1 publication Critical patent/WO2025189386A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Definitions

  • the present disclosure relates to the field of wireless communications, and in particular to a paging method, a communication device, an access network device, a core network device, a storage medium, and a program product.
  • the network may need to page the terminal. Through paging, the terminal activates the network connection, so that the network can provide corresponding services to the terminal.
  • the embodiments of the present disclosure relate to a paging method, a communication device, an access network device, a core network device, a storage medium, and a program product, thereby implementing paging of a terminal in an S&F mode.
  • a paging method is provided.
  • the paging method is performed by an access network device.
  • the paging method includes: receiving first information sent by a first core network device, wherein the first information is used to request the access network device to page a terminal; determining that a service link is unavailable; and storing the first information; wherein the service link is a link between a satellite and a terminal, and the access network device is deployed on the satellite.
  • a paging method is provided.
  • the paging method is performed by a core network device.
  • the paging method includes: sending first information to an access network device, wherein the first information is used to request the access network device to page a terminal, where the access network device is deployed on a satellite; obtaining a waiting time; setting a waiting timer based on the waiting time; and executing a paging response wait based on the waiting timer.
  • a communication device includes a transceiver module and a processing module.
  • the transceiver module is configured to receive first information sent by a first core network device, wherein the first information is used to request an access network device to page a terminal.
  • the processing module is configured to determine that a service link is unavailable and store the first information.
  • the service link is a link between a satellite and a terminal, and the access network device is deployed on the satellite.
  • a communication device includes a transceiver module and a processing module.
  • the transceiver module is configured to send first information to an access network device, wherein the first information is used to request the access network device to page a terminal, where the access network device is deployed on a satellite.
  • the processing module is configured to obtain a waiting time; set a waiting timer based on the waiting time; and execute a paging response wait based on the waiting timer.
  • an access network device includes one or more processors and a memory storing instructions. When the instructions are executed by the access network device, the access network device implements the paging method described in the first aspect.
  • a core network device includes one or more processors and a memory storing instructions. When the instructions are executed by the core network device, the core network device implements the paging method described in the second aspect.
  • a communication system includes an access network device and a core network device.
  • the access network device is configured to implement the paging method described in the first aspect.
  • the core network device is configured to implement the paging method described in the second aspect.
  • a storage medium stores instructions.
  • the instructions When the instructions are executed on a communication device, the communication device executes the paging method described in the first aspect or the second aspect.
  • a program product which, when executed by a communication device, enables the communication device to execute the paging method as described in the first or second aspect.
  • a chip or a chip system includes a processing circuit.
  • the processing circuit is configured to execute the paging method as described in the first aspect or the second aspect.
  • paging of a terminal can be achieved when an access network device executes a store-and-forward mode.
  • FIG1A is a schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.
  • FIG1B is a schematic diagram of a satellite communication system architecture based on transparent transmission payload according to an embodiment of the present disclosure.
  • FIG1C is a schematic diagram of a satellite communication system based on a regenerative payload according to an embodiment of the present disclosure.
  • FIG2A is a schematic diagram illustrating normal or default satellite operation according to an embodiment of the present disclosure.
  • FIG2B is a schematic diagram illustrating the operation of a store and forward satellite according to an embodiment of the present disclosure.
  • FIG3 is an exemplary interaction diagram of a paging method provided according to an embodiment of the present disclosure.
  • FIG4 is an exemplary flowchart of a paging method provided according to an embodiment of the present disclosure.
  • FIG5 is an exemplary flowchart of a paging method provided according to an embodiment of the present disclosure.
  • FIG6A is an exemplary flowchart of a paging method according to an embodiment of the present disclosure.
  • FIG6B is an exemplary flowchart of a paging method according to an embodiment of the present disclosure.
  • FIG7B is an exemplary interaction diagram of a specific embodiment of the paging method provided according to an embodiment of the present disclosure.
  • inventions of the present disclosure provide a paging method.
  • the paging method is performed by an access network device.
  • the paging method includes: receiving first information sent by a first core network device, wherein the first information is used to request the access network device to page a terminal; determining that a service link is unavailable; and storing the first information.
  • the service link is a link between a satellite and the terminal, and the access network device is deployed on the satellite.
  • the access network device upon receiving the first information, can determine that the service link is unavailable and store the first information. In this way, the access network device can cache the first information and send a paging message containing the first information to the terminal when the satellite movement makes the service link available. In this way, paging of the terminal is achieved.
  • the first information may include at least one of the following: location information, used to indicate the paging area; identification information, used to indicate the paging terminal.
  • the first information may be carried in one of the following: a paging message, used to page the terminal; or a RAN paging request message, used to request an access network device to page the terminal.
  • the access network device can receive a paging message to perform CN-initiated paging; or the access network device can receive a paging request message to perform RAN-initiated paging. In this way, the access network device can implement terminal paging after the service link becomes available.
  • the above-mentioned paging method may further include: sending second information to the first core network device, wherein the second information is used for the first core network device to perform paging waiting.
  • the access network device can send the second information to the first core network device, so that the first core network device performs paging waiting.
  • the first core network device can set a waiting timer to wait for receiving signaling and/or data sent by the terminal in response to the paging. Then, when the access network device implements the store-and-forward mode, the first core network device can wait for the service link and/or feeder link to become available from being unavailable, and then can use the store-and-forward mechanism to implement paging for the terminal.
  • the second information may include at least one of the following: a waiting time, used to determine the duration for which the first core network device performs paging waiting; a waiting reason, used to indicate the reason for the paging waiting.
  • the second information may include a waiting time and/or a waiting reason. Based on the waiting time, the first core network device may determine the required waiting time. Based on the waiting reason, the first core network device may determine that the paging waiting is caused by the unavailability of the service link and/or feeder link in the store-and-forward mode.
  • the waiting time may be determined based on at least one of: the ephemeris of the satellite; and the position of the terminal.
  • the waiting reason may include: the access network device executes a store-and-forward mode.
  • the paging method may further include: determining that a service link is available; and sending third information to the terminal, wherein the third information is used to paging the terminal.
  • the third information may include: identification information, used to indicate the paging terminal.
  • inventions of the present disclosure provide a paging method.
  • the paging method is performed by a core network device.
  • the paging method includes: sending a first message to an access network device, wherein the first message is used to request the access network device to page a terminal, where the access network device is deployed on a satellite; obtaining a waiting time; setting a waiting timer based on the waiting time; and executing a paging wait based on the waiting timer.
  • the first core network device can determine the required waiting time. Based on the waiting reason, the first core network device can set the waiting timer duration. During the waiting timer duration, the first core network device can execute the paging wait. In this way, the first core network device can wait for the predetermined time and promptly determine whether the terminal paging is successful.
  • the first information may include at least one of the following: location information, used to indicate the paging area; identification information, used to indicate the paging terminal.
  • the first information may be carried in one of the following: a paging message, used to page the terminal; or a RAN paging request message, used to request an access network device to page the terminal.
  • the waiting time may include at least one of the following: a first duration, wherein the first duration is the duration it takes for the service link to become available next time; a second duration, wherein the second duration is the duration it takes for the feeder link to become available next time; wherein the service link is the link between the satellite and the terminal, and the feeder link is the link between the satellite and the ground station.
  • the above-mentioned paging method may also include: determining that signaling and/or data sent by the access network device is received during the paging waiting period, wherein the signaling and/or data is associated with the terminal; determining that the paging for the terminal is successful; and canceling the waiting timer, wherein the waiting timer is set according to the waiting time.
  • the above-mentioned paging method may also include: determining that no signaling and/or data sent by the access network device is received during the paging waiting period, wherein the signaling and/or data is associated with the terminal; and determining that the paging for the terminal has failed.
  • the paging method may further include: resending the first information to the access network device.
  • inventions of the present disclosure provide a communications device.
  • the communications device includes a transceiver module and a processing module.
  • the transceiver module is configured to receive first information sent by a first core network device, wherein the first information is used to request an access network device to page a terminal.
  • the processing module is configured to determine that a service link is unavailable and store the first information.
  • the service link is a link between a satellite and a terminal, and the access network device is deployed on the satellite.
  • the first information may include at least one of the following: location information, used to indicate the paging area; identification information, used to indicate the paging terminal.
  • the first information may be carried in one of the following: a paging message, used to page the terminal; or a RAN paging request message, used to request an access network device to page the terminal.
  • the transceiver module can also be configured to: send second information to the first core network device, wherein the second information is used for the first core network device to perform paging waiting.
  • the second information may include at least one of the following: a waiting time, used to determine the duration for which the first core network device performs paging waiting; a waiting reason, used to indicate the reason for the paging waiting.
  • the waiting time may be determined based on at least one of: the ephemeris of the satellite; or the position of the terminal.
  • the waiting time may include at least one of the following: a first duration, wherein the first duration is the duration it takes for the service link to become available next time; a second duration, wherein the second duration is the duration it takes for the feeder link to become available next time; wherein the feeder link is a link between the satellite and the ground station.
  • the waiting reason may include: the access network device executes a store-and-forward mode.
  • the processing module can also be configured to: determine that the service link is available; the transceiver module can also be configured to: send third information to the terminal, wherein the third information is used to page the terminal.
  • the third information may include: identification information for indicating the paging terminal.
  • inventions of the present disclosure provide a communication device.
  • the communication device includes a transceiver module and a processing module.
  • the transceiver module is configured to send a first message to an access network device, wherein the first message is used to request the access network device to page a terminal.
  • the access network device is deployed on a satellite.
  • the processing module is configured to obtain a waiting time; set a waiting timer based on the waiting time; and execute a paging wait based on the waiting timer.
  • the first information may include at least one of the following: location information, used to indicate the paging area; identification information, used to indicate the paging terminal.
  • the first information may be carried in one of the following: a paging message, used to page the terminal; or a RAN paging request message, used to request an access network device to page the terminal.
  • the transceiver module can also be configured to: receive second information sent by the access network device, wherein the second information is used for the first core network device to perform paging waiting.
  • the second information may include at least one of the following: a waiting time, used to determine the duration for which the first core network device performs paging waiting; a waiting reason, used to indicate the reason for the paging waiting.
  • the waiting reason may include: the access network device executes the store-and-forward mode.
  • the waiting time can be obtained by at least one of the following methods: the first core network device determines the waiting time; the first core network device obtains the waiting time from the access network device.
  • the waiting time can be determined based on at least one of the following: the ephemeris of the satellite; the position of the terminal.
  • the waiting time may include at least one of the following: a first duration, wherein the first duration is the duration it takes for the service link to become available next time; a second duration, wherein the second duration is the duration it takes for the feeder link to become available next time; wherein the service link is the link between the satellite and the terminal, and the feeder link is the link between the satellite and the ground station.
  • the processing module can be configured to: determine that signaling and/or data sent by the access network device is received during the paging waiting period, wherein the signaling and/or data is associated with the terminal; determine that the paging for the terminal is successful; and cancel the waiting timer, wherein the waiting timer is set according to the waiting time.
  • the processing module can be configured to: determine that no signaling and/or data sent by the access network device is received during the paging waiting period, wherein the signaling and/or data is associated with the terminal; and determine that the paging for the terminal has failed.
  • the transceiver module may be configured to: resend the first information to the access network device.
  • inventions of the present disclosure provide an access network device.
  • the access network device includes one or more processors and a memory storing instructions. When the instructions are executed by the access network device, the access network device implements the paging method described in any one of the first aspect and possible implementations thereof.
  • inventions of the present disclosure provide a core network device.
  • the core network device includes one or more processors and a memory storing instructions. When the instructions are executed by the core network device, the core network device implements the paging method as described in any one of the second aspect and possible implementations thereof.
  • inventions of the present disclosure provide a communications system.
  • the communications system includes an access network device and a core network device.
  • the access network device is configured to implement the paging method described in any one of the first aspect and possible implementations thereof.
  • the core network device is configured to implement the paging method described in any one of the second aspect and possible implementations thereof.
  • an embodiment of the present disclosure provides a storage medium storing instructions that, when executed on a communication device, cause the communication device to execute the paging method described in any one of the first aspect, the second aspect, and possible implementations thereof.
  • the present disclosure provides a program product.
  • the program product When the program product is executed by a communication device, the communication device executes A paging method as described in any one of the first aspect, the second aspect and possible implementation modes thereof.
  • an embodiment of the present disclosure provides a computer program.
  • the computer program When the computer program is executed on a computer, the computer executes the paging method as described in any one of the first aspect, the second aspect, and possible implementations thereof.
  • embodiments of the present disclosure provide a chip or chip system.
  • the chip or chip system includes a processing circuit.
  • the processing circuit is configured to execute the paging method as described in any one of the first aspect, the second aspect, and possible implementations thereof.
  • the present disclosure provides a paging method, communication device, access network equipment, core network equipment, storage medium, and program product.
  • the terms paging method, communication method, information processing method, and information transmission method are interchangeable;
  • the terms paging device, communication device, communication equipment, communication function, and communication entity are interchangeable;
  • the terms paging system, communication system, and information processing system are interchangeable.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular such as “a”, “an”, “the”, “above”, “said”, “the”, “the”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • articles such as “a”, “an”, “the” in English are used in translation, the noun following the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more than two.
  • the terms “at least one”, “one or more”, etc. can be used interchangeably.
  • descriptions such as “at least one of A and B,” “A and/or B,” “A in one case, B in another case,” or “in response to one case A, in response to another case B” may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.
  • a or B and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects.
  • the description object please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”.
  • “First” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number and can be one or more. Taking “first device” as an example, the number of "devices" can be one or more.
  • the objects modified by different prefixes can be the same or different.
  • the description object is "device”
  • the "first device” and the “second device” can be the same device or different devices, and their types can be the same or different; for example, if the description object is "information”, then the "second information” and the “first information” can be the same information or different information, and their contents can be the same or different.
  • “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “in response to", “in response to determining", “in the case of", “at the time of", “when!, “if", “if", etc. can be used interchangeably.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not less than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “not more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments.
  • Terms such as “device”, “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.
  • network can be interpreted as devices included in the network (e.g., access network devices, core network devices, etc.).
  • a network device may include at least one access network device.
  • a network device may include at least one core network device.
  • a network device may include at least one access network device and at least one core network device.
  • the terms “access network device (AN device)”, “radio access network device (RAN device)”, “base station (BS)”, “radio base station”, “fixed station”, “node”, “access point”, “transmission point (TP)”, “reception point (RP)”, “transmission/reception point (TRP)”, “panel”, “antenna panel”, “antenna array”, “cell”, “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “serving cell”, “carrier”, “component carrier”, “bandwidth part (BWP)” and the like may be used interchangeably.
  • terminal In some embodiments, the terms "terminal”, “terminal device”, “user equipment (UE)”, “user terminal” “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.
  • the access network device, the core network device, or the network device can be replaced by a terminal.
  • the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.).
  • D2D device-to-device
  • V2X vehicle-to-everything
  • terms such as "uplink” and “downlink” can also be replaced by terms corresponding to communication between terminals (for example, "side”).
  • uplink channels, downlink channels, etc. can be replaced by side channels
  • uplinks, downlinks, etc. can be replaced by side links.
  • the terminal may be replaced by an access network device, a core network device, or a network device.
  • the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.
  • obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • the access network device 102 may be composed of a centralized unit (CU) and a distributed unit (DU), where the CU may also be called a control unit.
  • the CU-DU structure may be used to separate the protocol layers of the network device, with some functions of the protocol layers being centrally controlled by the CU, and the remaining functions of some or all of the protocol layers being distributed in the DU, which is centrally controlled by the CU, but is not limited to this.
  • the core network 103 may be a device including a first core network device 1031, a second core network device 1032, a third core network device 1033, etc., or may be multiple devices or a device group including part or all of the first core network device 1031, the second core network device 1032, and the third core network device 1033.
  • Network devices may be virtual or physical.
  • the core network may include, for example, at least one of an evolved packet core (EPC) network, a 5G core (5GC) network, and a next generation core (NGC) network.
  • EPC evolved packet core
  • 5GC 5G core
  • NGC next generation core
  • the core network may be an EPC network in a 4G system.
  • the core network may also be a core network of other evolved versions, which is not specifically limited in the embodiments of the present disclosure.
  • the first core network device 1031 may be, for example, a mobility management entity (MME).
  • MME mobility management entity
  • the first core network device 1031 can be used to perform user mobility management, for example, and its name is not limited thereto.
  • the second core network device 1032 can be, for example, a packet data network (PDN) gateway (P-GW).
  • PDN packet data network gateway
  • the second core network device 1032 may be responsible for the connection between the EPC and the external network, for example, and its name is not limited thereto.
  • the third core network device 1033 can be, for example, a serving gateway (S-GW).
  • S-GW serving gateway
  • the third core network device 1033 may be responsible for, for example, data exchange on the user plane when the user moves between different access technologies, and its name is not limited thereto.
  • each core network device in the core network 103 may also be referred to as a network element, a network device, a network function, a network entity, etc., without limitation to the name.
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or some of the entities in the communication system 100 , but are not limited thereto.
  • the entities shown in FIG1A are illustrative only.
  • the communication system 100 may include all or some of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A .
  • the number and form of the entities are arbitrary.
  • the entities may be physical or virtual.
  • the connection relationships between the entities are illustrative only.
  • the entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 5G new radio NR
  • future radio access FAA
  • new radio access technology RAT
  • NR new radio
  • NX new radio access
  • FAA future generation radio access
  • FX Global System for Mobile communications
  • GSM Global System for Mobile communications
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-Wide Band (UWB)
  • Bluetooth registered trademark
  • PLMN Public Land Mobile Network
  • D2D Device-to-Device
  • M2M Machine-to-Machine
  • IoT Internet of Things
  • V2X Vehicle-to-Everything
  • systems using other communication methods and next-generation systems expanded upon them.
  • multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G, etc.) for application.
  • NTNs non-terrestrial networks
  • HAPs high-altitude platform systems
  • a satellite communication NTN is used as an example for illustration.
  • Satellite communication technology is considered an important aspect of the future development of wireless communication technology.
  • Communication systems that support satellite access technology can also be called satellite communication networks.
  • terminals can access the core network (such as EPC and 5GC) through the satellite access network and conduct business.
  • core network such as EPC and 5GC
  • satellite access networks may have problems such as limited coverage. Therefore, satellites may not be able to provide continuous connection services.
  • This discontinuous satellite connection includes interruptions in the service connection between the satellite and the terminal or the feeder connection between the satellite and the ground station.
  • connection between the satellite and the terminal may also be called a service link, and the connection between the satellite and the ground station may also be called a feeder link.
  • the satellite communication network can have two different architectures: a satellite communication network architecture based on transparent payloads (i.e., transparent mode) and a satellite communication network architecture based on regenerative payloads (i.e., regenerative mode).
  • a satellite communication network architecture based on transparent payloads i.e., transparent mode
  • a satellite communication network architecture based on regenerative payloads i.e., regenerative mode
  • FIG. 1B is a schematic diagram illustrating a satellite communication system architecture based on transparent transmission payloads according to an embodiment of the present disclosure.
  • the core network in this satellite communication system architecture is used as the EPC for illustration.
  • the core network can also be other evolved versions of the core network, which is not specifically limited in this embodiment of the present disclosure.
  • the eNB In transparent transmission mode, the eNB can be deployed on the ground, with the satellite performing the eNB's radio frequency functions.
  • FIG. 1C is a schematic diagram illustrating a satellite communication system architecture based on a regenerative payload, according to an embodiment of the present disclosure.
  • the core network in this satellite communication system architecture is still described as the EPC.
  • the core network can also be other evolved versions of the core network, which is not specifically limited in this embodiment of the present disclosure.
  • the eNB is deployed on the satellite. In this case, the eNB can be referred to as a satellite-based eNB.
  • handling discontinuous coverage of the service link when the satellite is in transparent transmission mode may include enhancing terminal mobility and power saving techniques when the satellite provides discontinuous coverage.
  • handling discontinuous coverage of the feeder link has not yet been technically clarified to support terminal services.
  • the satellite communication system supports store and forward (S&F) functionality.
  • Store and forward (S&F) operation is an operating mode of a communication system with satellite access (i.e., a satellite communication system).
  • the communication system can provide data storage services when the satellite connection is intermittent or temporarily unavailable, and provide cached data forwarding services when the satellite connection is restored.
  • the operation mode of the satellite communication system based on the transparent mode or the regeneration mode described above can be described as normal or default satellite operation.
  • FIG2A is a schematic diagram illustrating normal or default satellite operation according to an embodiment of the present disclosure.
  • the interaction of signaling and/or data transmission between the terminal and the remote terrestrial network (TN) via the satellite requires the simultaneous existence of a service link and a feeder link connection. Therefore, when the terminal interacts with the satellite via the service link, a continuous, end-to-end connection path exists between the terminal, the satellite, and the terrestrial network.
  • FIG2B is a schematic diagram of a store and forward satellite operation according to an embodiment of the present disclosure.
  • the interaction of end-to-end signaling or data transmission is processed as a combination of two steps that are not performed simultaneously (such as steps A and B in FIG2B ).
  • step A signaling or data transmission interaction is performed between the terminal and the satellite.
  • there may be no connection between the satellite and the ground network that is, the satellite can use the service link to communicate in the absence of an available feeder link connection).
  • step B a connection is established between the satellite and the ground network (that is, a feeder link is established), so that communication between the satellite and the ground network can be performed. Therefore, the satellite moves from establishing a connection with the terminal in step A to establishing a connection with the ground network in step B.
  • FIG 3 is an exemplary interaction diagram of a paging method according to an embodiment of the present disclosure.
  • the embodiment of the present disclosure relates to a paging method, which is applied to a communication system 100.
  • the paging method includes steps S301 to S311.
  • step S301 the second core network device 1032 sends first data to the first core network device 1031 .
  • the first core network device 1031 may receive first data.
  • the first core network device 1031 may be an MME.
  • the second core network device 1032 may be a P-GW.
  • the first data may be data for terminal 101.
  • the first data may be downlink data for terminal 101.
  • the first data may be data from an external server.
  • the first data may be data from an external server and for terminal 101.
  • step S301 may be implemented as follows: the second core network device 1032 sends the first data to the third core network device 1033 ; and the third core network device 1033 sends the first data to the first core network device 1031 .
  • the first data may be sent by the second core network device 1032 to the third core network device 1033.
  • the second core network device 1032 may send the first data received from the external server to the third core network device.
  • the third core network device 1033 may be an S-GW.
  • the first data may be sent from the second core network device 1032 to the third core network device 1033 via a user plane.
  • the first data may be sent from the second core network device 1032 to the third core network device 1033 via an S5 interface.
  • the third core network device 1033 may determine whether a user plane connection to the first core network device 1031 exists. In some embodiments, the third core network device 1033 may determine, based on the context data, that a user plane connection to the first core network device 1031 does not exist. In this case, the third core network device 1033 may store the first data. In some embodiments, the third core network device 1033 may determine, based on the context data, that a user plane connection to the first core network device 1031 exists. In this case, the third core network device 1033 may send the first data to the first core network device 1031. The first data sent to the first core network device 1031 may be the first data received by the third core network device 1033 from the second core network device 1032, or the stored first data.
  • the user plane connection between the third core network device 1033 and the first core network device 1031 may be an S11-U connection.
  • the first data may be transmitted on a user plane between the third core network device 1033 and the first core network device 1031. In some embodiments, the first data may be transmitted between the third core network device 1033 and the first core network device 1031 via an S11 interface. In one example, the first data may be transmitted between the third core network device 1033 and the first core network device 1031 via an S11-U connection.
  • step S302 the first core network device 1031 determines that the feeder link is unavailable.
  • the first core network device 1031 may determine that a feeder link between a ground station (not shown) and a satellite on which the access network device 102 is deployed is unavailable.
  • the first core network device 1031 may determine that a feeder link between a ground station and an access network device 102 in a satellite is unavailable.
  • the access network device 102 may be located in a satellite.
  • the access network device 102 may be an access network device in a non-terrestrial network (NTN). It is understood that the access network device 102 located in a satellite may be, for example, a satellite-based base station.
  • NTN non-terrestrial network
  • the first core network device 1031 may detect the availability of the feeder link and determine that the feeder link is unavailable.
  • the first core network device 1031 may store the first data.
  • step S303 the first core network device 1031 determines that the feeder link is available.
  • the first core network device 1031 may determine that the feeder link between the ground station and the access network device 102 is unavailable.
  • the first core network device 1031 may determine that a feeder link between the ground station and the access network device 102 in the satellite is unavailable.
  • the first core network device 1031 can directly determine that the feeder link is available. For example, after the first core network device 1031 receives the first data, if the ground station is covered by the access network device 102 on the satellite, the feeder link is available. In this case, only step S304 can be performed, and step S303 can be omitted.
  • step S304 the first core network device 1031 sends first information to the access network device 102 .
  • the first core network device 1031 may send first information to the access network device 102 .
  • the access network device 102 may receive the first information.
  • the first information may be used to request the access network device 102 to page the terminal. In some embodiments, the first information may be used to trigger the access network device 102 to page the terminal. In some embodiments, the first information may be used to instruct the access network device 102 to page the terminal.
  • the paging area may be a tracking area (TA).
  • the identification information of the area may be a tracking area list (TAL).
  • a TAL may be used to indicate one or more TAs.
  • a TAL may include tracking area identities (TAIs) of one or more TAs. Each TAI is used to identify a TA.
  • the identification information of the area may be a TAI.
  • the identification information may be used to indicate the terminal 101 being paged.
  • the identification information may include identification information of the terminal 101.
  • the identification information of the terminal 101 may include a UE ID.
  • the first message may include at least one of the following: a paging message or a paging request message.
  • the first information may be carried in a paging message.
  • paging may be initiated by a core network (CN).
  • CN core network
  • paging may also be referred to as CN paging, CN-initiated paging, CN-based paging, etc.
  • the first core network device 1031 may send a paging message to the access network device 102.
  • the paging message may include the first information.
  • the first information may be sent from the first core network device 1031 to the access network device 102 via a control plane.
  • step S305 the access network device 102 determines that the service link is unavailable.
  • the access network device 102 may determine that the service link between the access network device 102 and the terminal 101 is unavailable.
  • the access network device 102 may determine that a service link between the access network device 102 in the satellite and the terminal 101 is unavailable.
  • the access network device 102 may detect the availability of the service link and determine that the service link is unavailable.
  • the access network device 102 may determine that the service link is unavailable.
  • step S306 the access network device 102 stores the first information.
  • the access network device 102 may store the first information. For example, the access network device 102 may store the first information locally.
  • the access network device 102 may directly save the first message, where the first message includes the first information.
  • the access network device 102 may obtain the first information from the received first message and store the obtained first information.
  • step S307 the access network device 102 sends second information to the first core network device 1031 .
  • the access network device 102 may send second information to the first core network device 1031 .
  • the first core network device 1031 may receive the second information.
  • the second information may be used by the first core network device 1031 to perform paging waiting.
  • the second information may be used to indicate to the first core network device 1031 that paging will be delayed.
  • the name of the second information is not limited, and it can be, for example, a paging delay indication, a paging waiting indication, a paging delay notification, etc.
  • the second information may include at least one of the following: waiting time, waiting reason.
  • a wait cause may be used to indicate the reason for the page wait.
  • the waiting reason may include: the access network device 102 executes the S&F mode. In some embodiments, the waiting reason may include at least one of the following: the feeder link is unavailable, and the service link is unavailable.
  • the waiting time may be used to determine the duration for which the first core network device 1031 performs paging waiting. In some embodiments, the waiting time may be used to indicate the duration for which paging is delayed.
  • the waiting time may include at least one of the following: a first duration, a second duration.
  • the first duration may be the duration until the service link becomes available again.
  • step S305 it is determined that the service link is unavailable; however, as the satellite moves, the service link will become available.
  • the first duration may be the duration from when the current service link is unavailable to when the service link becomes available. The duration between the time when the service link is available and the time when the service link becomes available later.
  • the first duration can be the duration between the time when the current service link is unavailable and the time when the service link becomes available the last time.
  • the first duration may be the duration that elapses each time the service link becomes available multiple times.
  • the first duration may include: the duration from the time the service link is currently unavailable to the time the service link becomes available for the first time, the duration from the time the service link is currently unavailable to the time the service link becomes available for the second time, the duration from the time the service link is currently unavailable to the time the service link becomes available for the third time, and so on.
  • the first duration may include: the duration from the time the service link is currently unavailable to the time the service link becomes available for the first time, the duration from the time the service link becomes available for the first time to the time the service link becomes available for the second time, the duration from the time the service link becomes available for the second time to the time the service link becomes available for the third time, and so on.
  • the second duration may be the duration until the feeder link becomes available again.
  • the access network device 102 receives first information via the feeder link. As the satellite moves, the feeder link may become unavailable and then become available again.
  • the second duration may be the duration from the time the current feeder link becomes available to the time the feeder link becomes available again.
  • the second duration may be the duration from the time the current feeder link becomes available to the last time the feeder link became available.
  • the second duration may be the duration of each of the multiple times the feeder link becomes available.
  • the access network device 102 receives first information via the feeder link. As the satellite moves, the feeder link may become unavailable and then become available again, and so on.
  • the second duration may be the duration of each of the multiple times the service link becomes available.
  • the second duration may include: the duration from the time the current feeder link becomes available to the time the feeder link becomes available for the first time thereafter, the duration from the time the current feeder link becomes available to the time the feeder link becomes available for the second time thereafter, the duration from the time the current feeder link becomes available to the time the feeder link becomes available for the third time thereafter, and so on.
  • the second duration may include: the duration from the time the current feeder link becomes available to the time the feeder link becomes available for the first time thereafter, the duration from the time the feeder link becomes available for the first time thereafter to the time the feeder link becomes available for the second time thereafter, and the duration from the time the feeder link becomes available for the second time thereafter to the time the feeder link becomes available for the third time thereafter.
  • the second duration may be the duration from the time the service link next becomes available to the time the feeder link becomes available thereafter.
  • the second duration may be the duration from the time the service link next becomes available to the time the feeder link next becomes available.
  • the satellite's ephemeris can be used to indicate the operating parameters of the satellite network, based on which the start time, coverage duration, and no-coverage duration of the satellite's coverage of a specified location can be calculated.
  • the start time and connection duration between the satellite and a specified ground station can also be calculated.
  • the first duration can be determined based on the satellite's ephemeris and/or the location of terminal 101.
  • access network device 102 can determine the next time the service link becomes available based on the satellite's ephemeris and/or the location of terminal 101. In this way, access network device 102 can further determine the first duration.
  • the first core network device 1031 may set a waiting timer according to the waiting time.
  • the first core network device 1031 may determine the duration of the paging wait based on the waiting time; and set the timing of the waiting timer to the duration.
  • a wait timer is used to time the page wait.
  • the wait timer may be referred to as a timer, a delay timer, etc.
  • the first core network device 1031 may start the waiting timer. Then, during the timing of the waiting timer, the first core network device 1031 may perform paging wait.
  • the first core network device 1031 may receive signaling and/or data sent by the access network device 102.
  • the signaling and/or data may be associated with the terminal 101.
  • the signaling and/or data may be a response of the terminal 101 to a paging request.
  • the first core network device 1031 may receive signaling and/or data sent by the access network device 102 during the waiting time. In some embodiments, when the waiting timer starts and does not time out, the first core network device 1031 may receive signaling and/or data sent by the access network device 102. At this point, the first core network device 1031 may determine that the paging for the terminal 101 is successful.
  • the first core network device 1031 may cancel the waiting timer when it is determined that the paging for the terminal 101 is successful.
  • the first core network device 1031 may not receive the signaling and/or data sent by the access network device 102 during the waiting time. In some embodiments, when the waiting timer expires, the first core network device 1031 may still not receive the signaling and/or data sent by the access network device 102. In this case, the first core network device 1031 may determine that the paging for the terminal 101 has failed.
  • the first core network device 1031 may perform at least one of the following: re-page the terminal 101, and report the paging failure.
  • the first core network device 1031 may resend the first information to the access network device 102. In this way, the first core network device 1031 may page the terminal 101 again.
  • step S309 the access network device 102 determines that the service link is available.
  • the access network device 102 may determine that a service link between the access network device 102 and the terminal 101 is available.
  • the access network device 102 may detect the availability of the service link and determine that the service link is available.
  • the access network device 102 may detect the availability of the service link in a predetermined manner. The device 102 may continuously detect the availability of the service link. In some embodiments, the access network device 102 may periodically detect the availability of the service link. In some embodiments, the access network device 102 may detect the availability of the service link based on an event trigger.
  • the first core network device 1031 may determine that the feeder link is unavailable at a first time, and then determine that the feeder link is available at a second time after the first time. In some embodiments, the first core network device 1031 may detect that the feeder link is unavailable at a first time, and then detect that the feeder link is available at a second time after the first time. For example, after the first core network device 1031 receives the first data, if the ground station is not covered by the access network device 102 on the satellite at the first time, the feeder link is unavailable; as the satellite moves, the ground station is covered by the access network device 102 on the satellite at the second time, and the feeder link is available. In this case, step S303 can be performed after step S304.
  • step S310 the access network device 102 sends third information to the terminal 101 .
  • the access network device 102 when the access network device 102 determines that the service link is available, it may send third information to the terminal 101.
  • terminal 101 may receive third information.
  • the third information may be used to page terminal 101 .
  • the name of the third information is not limited, and it can be, for example, paging information, terminal paging information, etc.
  • the third information may include identification information.
  • the identification information is used to indicate the terminal 101 being paged.
  • the identification information may be the UE ID of the terminal 101.
  • the identification information in the third information may be obtained based on the first information.
  • the access network device 102 may determine the third information based on the first information.
  • the identification information in the first information may be the identification information in the third information.
  • the access network device 102 may send the stored paging message to the terminal 101.
  • the access network device 102 may send the locally stored paging message from the first core network device 1031 to the terminal 101.
  • the access network device 102 may send a paging message to the terminal 101 based on a stored paging request message.
  • the access network device 102 may determine a paging message based on a locally stored paging request message from the first core network device 1031, and send the paging message to the terminal 101.
  • the paging message sent by the access network device 102 to the terminal 101 may also carry other information in addition to the third information, for example, information related to the paging of the terminal 101, which is not specifically limited in the embodiment of the present disclosure.
  • the third information may be sent from the access network device 102 to the terminal 101 via a Uu interface.
  • step S311 the terminal 101 performs a service request and/or data transmission.
  • the terminal 101 may perform a service request and/or data transmission.
  • the terminal 101 may send a service request, which may be used to request implementation of a corresponding service.
  • the terminal 101 may initiate a service request process. For example, the terminal 101 may send a service request.
  • terminal 101 may receive first data.
  • the terminal 101 may perform mobile terminated (MT) data transmission.
  • the terminal 101 may receive the first data.
  • MT mobile terminated
  • the terminal 101 when the terminal 101 executes a service request and/or transmits data, it may send signaling and/or data to the access network device 102.
  • the access network device 102 may send the signaling and/or data from the terminal 101 to the first core network device 1031. Then, the first core network device 1031 may receive the signaling and/or data.
  • signaling and/or data related to the terminal 101 can be transmitted between the terminal 101 and the first core network device 1031 through the access network device 102.
  • the access network device 102 can transparently transmit the signaling and/or data between the terminal 101 and the first core network device 1031.
  • the access network device 102 can forward the signaling and/or data between the terminal 101 and the first core network device 1031.
  • the paging method in the embodiment of the present disclosure can be implemented, thereby implementing paging of the terminal 101 when the access network device 102 executes the S&F mode.
  • the names of information and the like are not limited to the names described in the embodiments, and include “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”,
  • codebook codeword
  • codepoint bit
  • data data
  • program program
  • chip chip
  • terms such as “moment”, “time point”, “time”, and “time position” can be replaced with each other, and terms such as “duration”, “period”, “time window”, “window”, and “time” can be replaced with each other.
  • radio wireless
  • RAN radio access network
  • AN access network
  • RAN-based and the like
  • "obtain”, “get”, “get”, “receive”, “transmit”, “bidirectional transmission”, “send and/or receive” can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.
  • terms such as “certain”, “preset”, “preset”, “setting”, “indicated”, “some”, “any”, and “first” can be interchangeable.
  • “Specific A”, “preset A”, “preset A”, “setting A”, “indicated A”, “some A”, “any A”, and “first A” can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, some A, any A, or first A, etc., but not limited to this.
  • the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.
  • the paging method involved in the embodiments of the present disclosure may include at least one of steps S301 to S311.
  • step S304 may be implemented as an independent embodiment
  • step S307 may be implemented as an independent embodiment
  • step S308 may be implemented as an independent embodiment
  • the combination of steps S304 and S307 may be implemented as an independent embodiment
  • the combination of steps S304 and S308 may be implemented as an independent embodiment
  • the combination of steps S307 and S308 may be implemented as an independent embodiment
  • the combination of steps S304, S307, and S308 may be implemented as an independent embodiment
  • the combination of steps S304, S307, and S308 may be implemented as an independent embodiment, but the present invention is not limited thereto.
  • steps S301, S302, S303, S305, S306, S307, S308, S309, S310, and S311 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S301, S302, S303, S304, S305, S306, S308, S309, S310, and S311 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S301, S302, S303, S304, S305, S306, S307, S309, S310, and S311 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG4 is an exemplary flow chart of a paging method according to an embodiment of the present disclosure. As shown in FIG4 , an embodiment of the present disclosure relates to a paging method. The paging method in this embodiment can be executed by access network device 102. The paging method includes steps S401 to S407.
  • step S401 first information is obtained.
  • step S401 can refer to the optional implementation of step S304 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the access network device 102 may receive the first information sent by the first core network device 1031 , but is not limited thereto and may also receive the first information sent by other entities.
  • the first information may be used to request the access network device 102 to page the terminal 101 .
  • step S402 it is determined that the service link is unavailable.
  • step S402 can refer to the optional implementation of step S305 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • step S403 the first information is stored.
  • step S403 can refer to the optional implementation of step S306 in FIG3 and other embodiments involved in FIG3. The related parts will not be repeated here.
  • step S404 the second information is sent.
  • step S404 can refer to the optional implementation of step S307 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the access network device 102 may send the second information to the first core network device 1031 , but is not limited thereto and may also send the second information to other entities.
  • the second information may be used by the first core network device 1031 to perform paging waiting.
  • step S405 it is determined that the service link is available.
  • step S405 can refer to the optional implementation of step S309 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • step S406 the third information is sent.
  • step S406 can refer to the optional implementation of step S310 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the access network device 102 may send the third information to the terminal 101, but is not limited thereto and may also send the third information to other entities.
  • the third information may be used to page terminal 101 .
  • step S407 signaling and/or data are transmitted.
  • step S407 can refer to the optional implementation of step S311 in FIG3 and other related parts in the embodiment involved in FIG3 , which will not be described in detail here.
  • the paging method according to the embodiment of the present disclosure may include at least one of steps S401 to S407.
  • step S401 may be implemented as an independent embodiment
  • step S404 may be implemented as an independent embodiment
  • a combination of steps S401 and S404 may be implemented as an independent embodiment, but the present disclosure is not limited thereto.
  • steps S402, S403, S404, S405, S406, and S407 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S401 , S402 , S403 , S405 , S406 , and S407 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG5 is an exemplary flow chart of a paging method according to an embodiment of the present disclosure. As shown in FIG5 , an embodiment of the present disclosure relates to a paging method. The paging method in this embodiment can be executed by the first core network device 1031. The paging method includes steps S501 to S507.
  • step S501 first data is acquired.
  • step S501 can refer to the optional implementation of step S301 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the first core network device 1031 may receive first data sent by the second core network device 1032 , but is not limited thereto and may also receive first data sent by other entities.
  • step S502 it is determined that the feeder link is unavailable.
  • step S502 can refer to the optional implementation of step S302 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • step S503 it is determined whether the feeder link is available.
  • step S505 can refer to the optional implementation of step S307 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • step S506 paging waiting is performed.
  • step S506 can refer to the optional implementation of step S308 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • paging waiting may be performed based on the second information.
  • step S507 signaling and/or data transmission is performed.
  • step S507 can refer to the optional implementation of step S311 in FIG3 and other related parts in the embodiment involved in FIG3 , which will not be described in detail here.
  • the paging method according to the embodiment of the present disclosure may include at least one of steps S501 to S507.
  • step S505 may be implemented as an independent embodiment
  • step S506 may be implemented as an independent embodiment
  • the combination of steps S505 and S506 may be implemented as an independent embodiment, but the present disclosure is not limited thereto.
  • steps S501, S502, S503, S504, S506, and S507 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S501 , S502 , S503 , S504 , S505 , and S507 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG6A is an exemplary flow chart of a paging method according to an embodiment of the present disclosure. As shown in FIG6A , an embodiment of the present disclosure relates to a paging method. The paging method in this embodiment can be executed by access network device 102. The paging method includes steps S6101 to S6103.
  • step S6101 first information is obtained.
  • step S6101 can refer to the optional implementation of step S304 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the access network device 102 may receive the first information sent by the first core network device 1031 , but is not limited thereto and may also receive the first information sent by other entities.
  • the first information may be used to request the access network device 102 to page the terminal 101 .
  • step S6102 it is determined that the service link is unavailable.
  • step S6102 can refer to the optional implementation of step S305 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • step S6103 the first information is stored.
  • step S6103 can refer to the optional implementation of step S306 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • FIG6B is an exemplary flow chart of a paging method according to an embodiment of the present disclosure. As shown in FIG6B , an embodiment of the present disclosure relates to a paging method. The paging method in this embodiment can be performed by the first core network device 1031. The paging method includes steps S6201 to S6204.
  • step S6201 the first information is sent.
  • step S6201 can refer to the optional implementation of step S304 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the first core network device 1031 may send the first information to the access network device 102 , but is not limited thereto and may also send the first information to other entities.
  • the first information may be used to request the access network device 102 to page the terminal 101 .
  • step S6202 the waiting time is obtained.
  • step S6202 can refer to the optional implementation of step S307 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the first core network device 1031 may receive second information, and the second information may indicate a waiting time.
  • the first core network device 1031 may determine the waiting time by itself.
  • step S6203 a waiting timer is set.
  • step S6203 can refer to the optional implementation of step S308 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • step S6204 paging waiting is performed.
  • step S6204 can refer to the optional implementation of step S308 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.
  • the MME i.e., the first core network device
  • the paging message includes information such as the UE ID (i.e., identification information) and the TA list (i.e., location information).
  • the eNB after receiving a paging message, the eNB (i.e., access network device) saves the paging message and returns a paging delay notification message (i.e., second information) to the MME due to unavailable serving link.
  • the delay notification may include that the delay reason is that the eNB is operating in S&F mode, i.e., the serving link or feeder link is unavailable.
  • the delay notification message may further include a waiting time.
  • the waiting time may be set based on the ephemeris information. For example, the waiting time includes the length of time to wait for the feeder link and the service link to become available.
  • the waiting time expires, if the MME still has not received the message sent by the eNB, it is considered that the paging has failed.
  • the MME detects that the serving eNB is operating in S&F mode and sends a RAN paging request message to the serving eNB.
  • This message contains information such as the UE ID and TA list.
  • the MME also sets a waiting time. This waiting time is the time it takes for the serving link to become available again and/or the time it takes for the feeder link to become available again. If the MME cannot determine the time it takes for the serving link to become available again, it can request the RAN to return the time it takes for the serving link to become available in the request message and set the waiting time based on this information.
  • FIG7A is an exemplary interaction diagram of a specific embodiment of a paging method provided in accordance with an embodiment of the present disclosure. As shown in FIG7A , the paging method provided in accordance with an embodiment of the present disclosure may include steps S7101 to S7112.
  • step S7101 the UE is registered and in an idle state (IDLE).
  • step S7102 when the S-GW (i.e., the third core network device) receives downlink data for the UE, if the context data of the S-GW indicates that the tunnel endpoint identity (TEID) of the user plane downlink has not reached the MME, the S-GW caches the downlink data packet until the S11-U connection is established; otherwise, the S-GW sends the downlink data to the MME.
  • the S-GW i.e., the third core network device
  • step S7103 if the MME detects that the feeder link is unavailable, the MME stores the downlink data based on the data storage quota.
  • step S7104 after a period of time, the MME detects that the feeder link becomes available.
  • the MME sends a paging message to the UE.
  • the paging message includes the NAS ID, TAI, and UE identity used for paging.
  • the paging message is sent to each eNB in the TA to which the UE is registered.
  • step S7107 the eNB receives the paging message.
  • the eNB detects that the serving link is unavailable, the eNB stores the paging message.
  • step S7108 the eNB sends a paging delay notification to the MME to notify it that the paging process will be delayed.
  • the paging delay notification indicates that the delay is due to unavailable serving links.
  • a paging wait time may be provided to the MME.
  • the paging wait time (i.e., wait time) may be generated based on satellite ephemeris information and the UE's location.
  • the MME saves the paging wait time. If the UE does not receive data or signaling before the wait timer expires, the MME may consider the paging to have failed. The MME may determine the appropriate action based on the operational policy. For example, the MME may resend the paging message to the eNB. If the UE receives data or signaling before the wait timer expires, the MME may cancel the wait timer.
  • the eNB detects that the serving link becomes available and forwards the stored paging message to the UE based on the paging information.
  • step S7112 if the UE receives a paging message, the UE can initiate a service request process, or the UE completes the MT data transmission in the control plane CIoT EPS optimization process.
  • FIG7B is an exemplary interaction diagram of a specific embodiment of the paging method provided in accordance with an embodiment of the present disclosure.
  • the paging method provided in the example may include steps S7201 to S7212.
  • step S7201 the UE is registered and in an idle state (IDLE).
  • step S7202 when the S-GW (i.e., the third core network device) receives downlink data for the UE, if the context data of the S-GW indicates that the TEID of the user plane downlink has not reached the MME, the S-GW caches the downlink data packet until the S11-U connection is established; otherwise, the S-GW sends the downlink data to the MME.
  • the S-GW i.e., the third core network device
  • step S7203 if the MME detects that the feeder link is unavailable, the MME stores the downlink data based on the data storage quota.
  • step S7204 after a period of time, the MME detects that the feeder link becomes available.
  • step S7205 the MME detects that the eNB is operating in S&F mode (this can be achieved based on the eNB's S&F mode reporting during UE attachment) and requests that the eNB page the UE.
  • the MME then sends a RAN Paging Request message to the eNB.
  • the RAN Paging Request message includes paging-related information, including the TAI and UE identity.
  • the TAI indicates the location the eNB needs to page.
  • the MME uses a request message to request the eNB to provide a paging wait time.
  • step S7206 and step S7207 the eNB receives the RAN paging request message.
  • the eNB detects that the serving link is unavailable, the eNB saves the paging related information.
  • step S7208 if the MME requests a paging waiting time in step S7205, the eNB sends time information related to the duration for which the serving link becomes available to the MME through a notification message.
  • step S7209 after receiving the duration information, the MME generates a paging waiting time based on the received duration information and the duration information during which the feeder link becomes available.
  • the MME stores a paging wait time. If the UE does not receive data or signaling before the wait timer expires, the MME may consider the paging to have failed. The MME may determine the appropriate action based on the operational policy. For example, the MME may resend the paging message to the eNB. If the UE receives data or signaling before the wait timer expires, the MME may cancel the wait timer.
  • the NB detects that the serving link becomes available. Based on the paging information, the eNB forwards the stored paging message to the UE.
  • step S7212 if the UE receives a paging message, the UE may initiate a service request process, or the UE may complete the MT data transmission in the control plane CIoT EPS optimization process.
  • the embodiments of the present disclosure also provide a communication device for implementing any of the above methods.
  • the embodiments of the present disclosure provide a communication device including units or modules for implementing each step performed by an access network device in any of the above methods.
  • the embodiments of the present disclosure provide a communication device including units or modules for implementing each step performed by a core network device in any of the above methods.
  • the division of the various units or modules in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the above-mentioned hardware circuits may be understood as one or more processors.
  • the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above-mentioned units or modules may be implemented by designing the logical relationship between the components in the circuit.
  • ASIC application-specific integrated circuit
  • the above-mentioned hardware circuit may be implemented by a programmable logic device (PLD).
  • PLD programmable logic device
  • FPGA field programmable gate array
  • it may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured through a configuration file, thereby implementing the functions of some or all of the above-mentioned units or modules. All units or modules of the above-mentioned devices may be implemented entirely by the processor calling software, or entirely by hardware circuits, or partially by the processor calling software, and the remaining part by hardware circuits.
  • a processor is a circuit with signal processing capabilities.
  • the processor may be a circuit with instruction reading and execution capabilities, such as a central processing unit, a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP).
  • the processor may implement certain functions through the logical relationship of hardware circuits, and the logical relationship of the above hardware circuits may be fixed or reconfigurable, such as a processor.
  • a processor is a hardware circuit implemented as a dedicated integrated circuit or programmable logic device, such as an FPGA.
  • the process of loading a configuration file on the processor to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.
  • NPU neural network processing unit
  • TPU tensor processing unit
  • DPU deep learning processing unit
  • FIG8 is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure.
  • the communication device 800 may include at least one of the following: a transceiver module 801 and a processing module 802 .
  • the communication device 800 may be an access network device 102.
  • the transceiver module 801 may be configured to: receive first information sent by a first core network device, wherein the first information is used to request the access network device to page the terminal; the processing module 802 may be configured to: determine that the service link is unavailable and store the first information; wherein the service link is a link between a satellite and a terminal, and the access network device is deployed on the satellite.
  • the transceiver module 801 may be configured to perform at least one of the communication steps such as sending and/or receiving performed by the access network device 102 in any of the above methods (for example, steps S304, S307, S310, S311), which are not described in detail here.
  • the processing module 802 may be configured to perform at least one of the other steps (for example, steps S305, S306, S309) other than the communication steps such as sending and/or receiving performed by the access network device 102 in any of the above methods, which are not described in detail here.
  • steps S305, S306, S309 other than the communication steps such as sending and/or receiving performed by the access network device 102 in any of the above methods, which are not described in detail here.
  • the communication device 800 may be the first core network device 1031.
  • the transceiver module 801 may be configured to: send a first message to the access network device, wherein the first message is used to request the access network device to page the terminal, and the access network device is deployed on a satellite; the processing module 802 may be configured to: obtain a waiting time, set a waiting timer according to the waiting time, and perform paging waiting according to the waiting timer.
  • the transceiver module 801 may be configured to execute at least one of the communication steps such as sending and/or receiving (for example, steps S301, S304, S307, and S311) executed by the first core network device 1031 in any of the above methods, which are not described in detail here.
  • the processing module 802 may be configured to execute at least one of the other steps (for example, steps S302, S303, and S308) other than the communication steps such as sending and/or receiving executed by the first core network device 1031 in any of the above methods, which are not described in detail here.
  • steps S302, S303, and S308 other than the communication steps such as sending and/or receiving executed by the first core network device 1031 in any of the above methods, which are not described in detail here.
  • the transceiver module 801 may include a transmitting module and/or a receiving module.
  • the transmitting module and the receiving module may be separate or integrated.
  • the transceiver module may be interchangeable with the transceiver.
  • the processing module 802 can be a single module or include multiple submodules.
  • the multiple submodules each execute all or part of the steps required by the processing module.
  • the processing module and the processor can be interchangeable.
  • FIG. 9A is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.
  • Communication device 9100 can be an access network device, a first core network device, or a chip, chip system, or processor that supports the access network device in implementing any of the above methods. It can also be a chip, chip system, or processor that supports the first core network device in implementing any of the above methods.
  • Communication device 9100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.
  • the communication device 9100 includes one or more processors 9101.
  • the processor 9101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor can be used to process the communication protocol and communication data
  • the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data.
  • the communication device 9100 is used to perform any of the above methods.
  • one or more processors 9101 are used to call instructions to enable the communication device 9100 to perform any of the above methods.
  • the communication device 9100 further includes one or more transceivers 9102.
  • the transceiver 9102 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, steps S301, S304, S307, S310, S311, but not limited thereto), and the processor 9101 performs at least one of the other steps (for example, steps S302, S303, S305, S306, S308, S309, but not limited thereto).
  • the transceiver may include a receiver and/or a transmitter, and the receiver and transmitter may be separate or integrated.
  • transceiver transceiver unit, transceiver, transceiver circuit, interface circuit, and interface
  • transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable
  • receiver, receiving unit, receiver, and receiving circuit may be interchangeable.
  • the communication device 9100 further includes one or more memories 9103 for storing data. Alternatively, all or part of the memories 9103 may be located outside the communication device 9100. In alternative embodiments, the communication device 9100 may include one or more interface circuits 9104. Optionally, the interface circuits 9104 are connected to the memories 9103 and may be configured to receive data from the memories 9103 or other devices, or to send data to the memories 9103 or other devices. For example, the interface circuits 9104 may read data stored in the memories 9103 and send the data to the processor 9101.
  • the communication device 9100 described in the above embodiment may be an access network device or a first core network device, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9A.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • FIG9B is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. If the communication device 9100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 9200 shown in FIG9B , but the present invention is not limited thereto.
  • the chip 9200 includes one or more processors 9201.
  • the chip 9200 is configured to execute any of the above methods.
  • chip 9200 further includes one or more interface circuits 9202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably.
  • chip 9200 further includes one or more memories 9203 for storing data. Alternatively, all or part of memory 9203 may be located external to chip 9200.
  • interface circuit 9202 is connected to memory 9203 and may be used to receive data from memory 9203 or other devices, or may be used to send data to memory 9203 or other devices. For example, interface circuit 9202 may read data stored in memory 9203 and send the data to processor 9201.
  • the interface circuit 9202 performs at least one of the communication steps (e.g., steps S301, S304, S307, S310, and S311) of the above-described method.
  • the interface circuit 9202 performing the communication steps (e.g., steps S301, S304, S307, S310, and S311) of the above-described method for example, means that the interface circuit 9202 performs data exchange between the processor 9201, the chip 9200, the memory 9203, or the transceiver device.
  • the processor 9201 performs at least one of the other steps (e.g., steps S302, S303, S305, S306, S308, and S309, but not limited thereto).
  • modules and/or devices described in various embodiments can be arbitrarily combined or separated according to circumstances.
  • some or all steps can also be performed collaboratively by multiple modules and/or devices, which is not limited here.
  • the embodiments of the present disclosure further provide a storage medium having instructions stored thereon.
  • the communication device 9100 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices.
  • the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.
  • the embodiments of the present disclosure further provide a program product, which, when executed by the communication device 9100, enables the communication device 9100 to perform any of the above methods.
  • the program product is a computer program product.
  • the embodiments of the present disclosure further provide a computer program, which, when executed on a computer, enables the computer to execute any of the above methods.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de radiomessagerie, un appareil de communication, un dispositif de réseau d'accès, un dispositif de réseau central, un support d'enregistrement et un produit-programme. Le procédé consiste à : recevoir des premières informations envoyées par un premier dispositif de réseau central, les premières informations étant utilisées pour demander à un dispositif de réseau d'accès d'appeler un terminal ; déterminer qu'une liaison de service n'est pas disponible ; et stocker les premières informations, la liaison de service étant une liaison entre un satellite et le terminal, et le dispositif de réseau d'accès étant déployé sur le satellite. La radiomessagerie d'un terminal est réalisée au moyen de la solution de la présente demande.
PCT/CN2024/081391 2024-03-13 2024-03-13 Procédé de radiomessagerie, dispositif de réseau d'accès, dispositif de réseau central et support d'enregistrement Pending WO2025189386A1 (fr)

Priority Applications (2)

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PCT/CN2024/081391 WO2025189386A1 (fr) 2024-03-13 2024-03-13 Procédé de radiomessagerie, dispositif de réseau d'accès, dispositif de réseau central et support d'enregistrement
CN202480006036.2A CN120435899A (zh) 2024-03-13 2024-03-13 寻呼方法、接入网设备、核心网设备、存储介质

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PCT/CN2024/081391 WO2025189386A1 (fr) 2024-03-13 2024-03-13 Procédé de radiomessagerie, dispositif de réseau d'accès, dispositif de réseau central et support d'enregistrement

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