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WO2025082213A1 - Procédé de communication, appareil de communication et système de communication - Google Patents

Procédé de communication, appareil de communication et système de communication Download PDF

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Publication number
WO2025082213A1
WO2025082213A1 PCT/CN2024/122894 CN2024122894W WO2025082213A1 WO 2025082213 A1 WO2025082213 A1 WO 2025082213A1 CN 2024122894 W CN2024122894 W CN 2024122894W WO 2025082213 A1 WO2025082213 A1 WO 2025082213A1
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WO
WIPO (PCT)
Prior art keywords
sub
area
terminal device
information
coverage
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.)
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Application number
PCT/CN2024/122894
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English (en)
Chinese (zh)
Inventor
陈莹
王俊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of WO2025082213A1 publication Critical patent/WO2025082213A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements

Definitions

  • the present application relates to the field of communication technology, and in particular to a communication method, a communication device and a communication system.
  • terminal devices need to frequently switch beams and cells due to the movement of satellites.
  • the coverage area of satellite cells is much larger than that of ground cells, and the coverage area of satellite cells can include the coverage areas of many ground cells. Therefore, these ground cells can be used as neighboring cells of satellite cells, and terminal devices can perform cell measurements on these ground cells to facilitate cell reselection and switching.
  • the terminal device constantly measures the ground cells within the coverage of the satellite cell, which will lead to high power consumption of the terminal device. Therefore, how to reduce the power consumption of the terminal device is an urgent problem to be solved.
  • the embodiments of the present application disclose a communication method, a communication device and a communication system, which can reduce the power consumption of terminal equipment.
  • an embodiment of the present application provides a communication method, which can be executed by a terminal device, where the terminal device can refer to the terminal device itself, or to a processor, module, chip, or chip system in the terminal device that implements the method, without limitation.
  • the method includes:
  • a first message is received, the first message including information of multiple sub-areas in a first terrestrial network (TN) coverage area, the first TN coverage area overlaps with a coverage area of a non-terrestrial network (NTN) cell, the coverage area of the NTN cell overlaps with multiple TN coverage areas, the NTN cell is a service cell for the terminal device, the multiple TN coverage areas include the first TN coverage area, and a path of the terminal device passes through the first TN coverage area; and a signal quality of a cell within the coverage range of a first sub-area, the first sub-area is included in the multiple sub-areas, and a path of the terminal device in the NTN cell passes through the first sub-area.
  • TN terrestrial network
  • NTN non-terrestrial network
  • the terminal device after the terminal device obtains information on multiple sub-areas within the coverage area of the first TN, it measures the signal quality of the cells within the first sub-area passed through based on its own path, that is, it only needs to measure the ground cells within the coverage area of the NTN cell that are closer to the terminal device, and there is no need to measure the ground cells within the coverage area of the NTN cell that are farther away from the terminal device, thereby reducing the power consumption of the terminal device.
  • the method before receiving the first message, the method also includes: receiving a second message, the second message including information of the multiple TN coverage areas; and sending a third message, the third message being used to indicate the first TN coverage area.
  • the second message may be a broadcast message.
  • the terminal device After receiving the second message, the terminal device determines the first TN coverage area based on its path, and requests information about multiple sub-areas within the first TN coverage area from the network device through a third message.
  • the network device only needs to broadcast the information about the multiple TN coverage areas, and the terminal device can obtain information about the sub-areas of the TN coverage area through which its path passes based on interaction, without broadcasting information about the sub-areas within each TN coverage area, which can effectively reduce signaling overhead.
  • the method further includes: receiving first time information, where the first time information is used to indicate the time for the terminal device to measure a heterofrequency neighboring cell of a service cell of the terminal device.
  • the network device configures the time for the terminal device to measure the hetero-frequency neighboring cell, ensuring that the terminal device can complete the measurement of the hetero-frequency neighboring cell, so as to facilitate the terminal device to perform cell switching.
  • the method before receiving the first time information, the method further includes:
  • First indication information is sent, where the first indication information indicates whether the first sub-area includes or does not include the inter-frequency neighbor cell.
  • the terminal device may indicate through the first indication information whether or not the first sub-area includes an inter-frequency neighboring cell, thereby instructing the network device to configure the measurement time of the inter-frequency neighboring cell or the measurement period of the inter-frequency neighboring cell for the terminal device, so that the terminal device can Better measurement of inter-frequency neighboring cells.
  • the information of the multiple sub-regions indicates a reference point of each sub-region in the multiple sub-regions.
  • the network device can indicate the reference point information of each sub-area in multiple sub-areas to the terminal device, so that the terminal device can determine the sub-area through which its path passes based on the reference point of each sub-area, thereby measuring the signal quality of the cell in the corresponding sub-area.
  • the information of the multiple sub-regions further indicates at least one of the following information: a radius of each sub-region among the multiple sub-regions, and a shape of each sub-region among the multiple sub-regions.
  • the information of the multiple sub-areas includes a reference point, a radius, and a shape of each sub-area, so that the terminal device can determine the coverage range of each sub-area based on the information of the multiple sub-areas.
  • the information of the multiple sub-areas includes reference point information of the second sub-area and second indication information
  • the second indication information is used to indicate the difference between the coordinates of the reference point of the third sub-area and the coordinates of the reference point of the second sub-area
  • the second sub-area and the third sub-area are different sub-areas among the multiple sub-areas.
  • the shapes of the multiple sub-areas in the first TN coverage area may be the same, and the shapes of the multiple sub-areas may be configured by a network device or specified by a protocol.
  • the position distance between the reference points of any two of the multiple sub-areas in the first TN coverage area is relatively close, so the reference points of the multiple sub-areas may be indicated in the form of a coordinate difference between the reference points of the multiple sub-areas and the reference points of the second sub-area, which can reduce the signaling overhead for indicating the positions of the reference points of each sub-area.
  • the information of the multiple sub-areas includes a difference between a coordinate of a reference point of any sub-area among the multiple sub-areas and a coordinate of a reference point of the first TN coverage area.
  • the reference point information of the first TN coverage area may be included in the first message or other messages (such as the second message).
  • the reference points of multiple sub-areas within the first TN coverage area are close to the reference point of the first TN coverage area. Therefore, the reference points of the multiple sub-areas can be indicated in the form of coordinate differences between them and the reference point of the first TN coverage area, which can reduce the signaling overhead of indicating the reference point positions of each sub-area.
  • the shape of the first sub-area includes any one of the following: a circle, an ellipse, a triangle, and a square.
  • the level of the first TN coverage area is the first level
  • the level of the first sub-area is the second level
  • the method further includes:
  • a fourth message is sent to the network device according to the path of the terminal device, and the fourth message is used to request information about a third-level coverage area, where the third-level coverage area is included in the first sub-area; measuring the signal quality of cells within the coverage area of the first sub-area includes: measuring the signal quality of cells in at least one third-level coverage area in the first sub-area, and the path of the terminal device passes through the at least one third-level coverage area.
  • the network device may divide the coverage of the NTN cell into different levels of ground coverage areas, and the ground coverage areas of different levels are in an inclusive relationship.
  • the terminal device After the terminal device obtains the information of the ground coverage area of one level, it can determine whether to request the information of the ground coverage area of the next level of the level based on its own needs. For example, after the terminal device obtains the information of the first sub-area (the ground coverage area of the second level), it determines whether to obtain the information of the ground coverage area of the third level according to its own needs, which can further reduce the energy consumption of the terminal device and meet the energy consumption requirements of the terminal device.
  • an embodiment of the present application provides a communication method, which can be executed by a network device.
  • the network device here can refer to the network device itself, or to a processor, module, chip, or chip system in the network device that implements the method, without limitation.
  • the method includes:
  • the first message including information of multiple sub-areas in a first terrestrial network TN coverage area, the first TN coverage area overlaps with the coverage area of a non-terrestrial network NTN cell, the coverage area of the NTN cell overlaps with multiple TN coverage areas, the multiple TN coverage areas include the first TN coverage area, and the path of the terminal device passes through the first TN coverage area; send the first message.
  • the method before sending the first message, the method further includes:
  • a second message is sent, where the second message includes information about the multiple TN coverage areas; and a third message is received, where the third message is used to indicate the first TN coverage area.
  • the method further includes:
  • Send first time information where the first time information is used to instruct the terminal device to measure the time of the heterofrequency neighboring cell of the service cell of the terminal device.
  • the method before sending the first time information, the method further includes:
  • First indication information is received, where the first indication information indicates whether the first sub-area includes or does not include the inter-frequency neighbor cell.
  • the information of the multiple sub-regions indicates a reference point of each sub-region in the multiple sub-regions.
  • the information of the multiple sub-regions further indicates at least one of the following information: a radius of each sub-region among the multiple sub-regions, and a shape of each sub-region among the multiple sub-regions.
  • the information of the multiple sub-areas includes reference point information of the second sub-area and second indication information
  • the second indication information is used to indicate the difference between the coordinates of the reference point of the third sub-area and the coordinates of the reference point of the second sub-area.
  • the information of the multiple sub-areas includes a difference between coordinates of a reference point of any sub-area among the multiple sub-areas and coordinates of a reference point of the first TN coverage area.
  • the shape of the first sub-area includes any one of the following: a circle, an ellipse, a triangle, and a square.
  • an embodiment of the present application provides a communication method, which can be executed by a network device.
  • the network device here can refer to the network device itself, or to a processor, module, chip, or chip system in the network device that implements the method, without limitation.
  • the method includes:
  • Receive third indication information the third indication information indicating the path of a terminal device in a non-terrestrial network NTN cell, the coverage area of the NTN cell overlaps with multiple TN coverage areas; send a fifth message, the fifth message is used to indicate a first sub-area, the path of the terminal device passes through the first sub-area, the first sub-area is included in a first terrestrial network TN coverage area, the multiple TN coverage areas include the first TN coverage area, and the path of the terminal device passes through the first TN coverage area.
  • the terminal device can report its path information to the network device, so that the network device can instruct the terminal device to measure the cells within the first sub-area through which its path passes according to the path information, so that the terminal device only needs to measure the ground cells within the coverage area of the NTN cell that are closer to the terminal device, and there is no need to measure the ground cells within the coverage area of the NTN cell that are farther away from the terminal device, thereby reducing the power consumption of the terminal device.
  • the fifth message includes information about cells within the coverage of the first sub-area.
  • the fifth message may include information such as the identification and frequency of the cells within the coverage of the first sub-area.
  • the terminal device can directly measure the cells within the coverage of the first sub-area without performing a cell search, thereby reducing the energy consumption of the terminal device and improving the efficiency of cell measurement.
  • the method further includes:
  • Send first time information where the first time information is used to instruct the terminal device to measure the time of the heterofrequency neighboring cell of the service cell of the terminal device.
  • the method before sending the first time information, the method further includes:
  • First indication information is received, where the first indication information indicates whether the first sub-area includes or does not include the inter-frequency neighbor cell.
  • the fifth message includes a reference point of the first sub-area.
  • the fifth message further includes at least one of the following information: a radius of the first sub-area, and a shape of the first sub-area.
  • the shape of the first sub-area includes any one of the following: a circle, an ellipse, a triangle, and a square.
  • an embodiment of the present application provides a communication method, which can be executed by a terminal device, where the terminal device can refer to the terminal device itself, or to a processor, module, chip, or chip system in the terminal device that implements the method, without limitation.
  • the method includes:
  • Send a third indication message wherein the third indication message indicates a path of a terminal device in a non-terrestrial network NTN cell, and the coverage area of the NTN cell overlaps with multiple TN coverage areas; receive a fifth message, wherein the fifth message is used to indicate a first sub-area, and the path of the terminal device passes through the first sub-area, and the first sub-area is included in a first terrestrial network TN coverage area, and the multiple TN coverage areas include the first TN coverage area, and the path of the terminal device passes through the first TN coverage area.
  • the fifth message includes information about cells within the coverage of the first sub-area.
  • the method further includes:
  • the first time information is used to instruct the terminal device to measure the inter-frequency neighboring time of the serving cell of the terminal device The time of the community.
  • the method before receiving the first time information, the method further includes:
  • First indication information is sent, where the first indication information indicates whether the first sub-area includes or does not include the inter-frequency neighbor cell.
  • the fifth message includes a reference point of the first sub-area.
  • the fifth message further includes at least one of the following information: a radius of the first sub-area, and a shape of the first sub-area.
  • the shape of the first sub-area includes any one of the following: a circle, an ellipse, a triangle, and a square.
  • an embodiment of the present application provides a communication device, which is used to execute the method in the first aspect or any possible implementation of the first aspect.
  • the communication device includes a unit having the function of executing the method in the first aspect or any possible implementation of the first aspect.
  • an embodiment of the present application provides a communication device, configured to execute the method in the second aspect or any possible implementation of the second aspect.
  • the communication device includes a unit having the function of executing the method in the second aspect or any possible implementation of the second aspect.
  • an embodiment of the present application provides a communication device, which is used to execute the method in the third aspect or any possible implementation of the third aspect.
  • the communication device includes a unit having the function of executing the method in the third aspect or any possible implementation of the third aspect.
  • an embodiment of the present application provides a communication device for executing the method in the fourth aspect or any possible implementation of the fourth aspect.
  • the communication device includes a unit having the function of executing the method in the fourth aspect or any possible implementation of the fourth aspect.
  • the above-mentioned communication device and communication device may include a transceiver unit and a processing unit.
  • a transceiver unit and a processing unit may also be made to the device embodiment shown below.
  • an embodiment of the present application provides a communication device, the communication device comprising a processor, configured to execute the method described in any one of the first to fourth aspects or any possible implementation.
  • the processor is configured to execute a program stored in a memory, and when the program is executed, the method described in any one of the first to fourth aspects or any possible implementation is executed.
  • the memory is located outside the above communication device.
  • the memory is located within the above-mentioned communication device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • the communication device further includes a transceiver, where the transceiver is used to receive a signal or send a signal.
  • an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the interface is used to input a first message; and the logic circuit is used to measure the signal quality of a cell within the coverage area of a first sub-area.
  • an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the logic circuit is used to generate a first message; and the interface is used to output the first message.
  • an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the interface is used to input third indication information and output a fifth message.
  • an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the interface is used to output a third indication information and input a fifth message.
  • an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program.
  • the computer program is run on a computer, the method shown in any aspect of the first to fourth aspects or any possible implementation is executed.
  • an embodiment of the present application provides a computer program product, which includes a computer program.
  • the computer program When the computer program is run on a computer, the method shown in any aspect of the first to fourth aspects or any possible implementation is executed.
  • an embodiment of the present application provides a computer program.
  • the computer program When the computer program is run on a computer, the method shown in any aspect or any possible implementation of the above-mentioned first to fourth aspects is executed.
  • an embodiment of the present application provides a communication system, which includes a first communication device and a second communication device, the first communication device is used to execute the method shown in the above-mentioned first aspect or any possible implementation of the first aspect, and the second communication device is used to execute the method shown in the above-mentioned second aspect or any possible implementation of the second aspect.
  • an embodiment of the present application provides a communication system, the communication system comprising a first communication device and a second communication device, the first The communication device is used to execute the method shown in the above-mentioned fourth aspect or any possible implementation of the fourth aspect, and the second communication device is used to execute the method shown in the above-mentioned third aspect or any possible implementation of the third aspect.
  • FIG1A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application.
  • FIG1B is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application.
  • FIG1C is a schematic diagram of the architecture of another communication system provided in an embodiment of the present application.
  • FIG2 is an interactive schematic diagram of a communication method provided in an embodiment of the present application.
  • FIG3 is an interactive schematic diagram of another communication method provided in an embodiment of the present application.
  • FIG4A is a schematic diagram of a communication scenario provided in an embodiment of the present application.
  • FIG4B is a schematic diagram of another communication scenario provided in an embodiment of the present application.
  • FIG5 is an interactive schematic diagram of another communication method provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application.
  • the present application provides a communication method, which is applied to the field of communication technology. Optionally, it can be applied to positioning in NTN communication scenarios. In order to more clearly describe the solution of the present application, some knowledge related to NTN communication is first introduced below.
  • NTN communications represented by non-ground equipment such as satellites, drones, and high-altitude platforms play an irreplaceable role.
  • Satellite communication has the characteristics of long communication distance, large coverage area, and flexible networking. It can provide communication services for both fixed terminals and various mobile terminals. Since traditional ground networks cannot provide seamless coverage for terminal devices, especially in places where base stations cannot be deployed, such as the sea, desert, and air, NTN is introduced into the fifth generation (5G) mobile communication system. It provides seamless coverage for terminal devices by deploying base stations or part of the base station functions on high-altitude platforms or satellites. In addition, high-altitude platforms or satellites are less affected by natural disasters, which can improve the reliability of 5G systems. In NTN based on satellite deployment, satellites cover the ground through different beams to form satellite cells. At the same time, a terminal device can be covered by multiple satellite cells.
  • 5G fifth generation
  • Satellite communication systems can be divided into the following three types according to the satellite's orbital altitude:
  • Geostationary earth orbit (GEO) satellite communication system also known as synchronous orbit satellite system, medium earth orbit (MEO) satellite communication system and low earth orbit (LEO) satellite communication system.
  • GEO Geostationary earth orbit
  • MEO medium earth orbit
  • LEO low earth orbit
  • the GEO satellite orbit altitude is 35786km. Its main advantage is that it can remain stationary relative to the ground and provide a large coverage area.
  • the disadvantages are: 1) The GEO satellite orbit is far away from the earth, and the free space propagation loss is large, resulting in a tight communication link budget. In order to increase the transmission/reception gain, the satellite needs to be equipped with a larger diameter antenna; 2) The communication transmission delay is large, which can reach a round-trip delay of about 500ms, which cannot meet the needs of real-time services; 3) GEO orbit resources are relatively scarce, the launch cost is high, and it cannot provide coverage for the earth's polar regions.
  • MEO satellites are between 2000 and 35786 km.
  • the advantage is that global coverage can be achieved with a relatively small number of satellites, but its orbital altitude is higher than that of LEO, and the transmission delay is still larger than that of LEO satellite communications.
  • MEO satellites are mainly used for positioning and navigation.
  • LEO satellites The orbital altitude of LEO satellites is between 300 and 2000 km.
  • LEO satellites are lower than MEO and GEO orbital altitudes, and have the advantages of low data transmission delay, low transmission loss, and relatively low launch cost.
  • satellite operators compensate for the limitations of the communication capabilities of a single satellite by increasing the number of satellites.
  • the terminal device can be "visible" to multiple satellites that can communicate for a period of time. At this time, multiple satellites can provide communication services for the terminal device, which provides the basic conditions for multi-satellite collaborative transmission.
  • the technical solution provided in the embodiments of the present application can be applied to various communication systems, for example, satellite communication systems, and systems integrating satellite communication and cellular networks.
  • the cellular network system may include, but is not limited to, 5G systems, global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems, general packet radio service (GPRS), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, advanced long term evolution (LTE) systems, and LTE wireless communication systems.
  • the present invention relates to LTE-A (LTE-A) system, new radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, wireless local area networks (WLAN), wireless fidelity (WiFi), next generation communication system or other communication systems, etc.
  • LTE-A LTE-A
  • NR new radio
  • NR evolved system of NR system
  • LTE-U unlicensed spectrum
  • NR NR-based access to unlicensed spectrum
  • NR-U system on unlicensed spectrum
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • WLAN wireless local area networks
  • WiFi wireless fidelity
  • Satellite communication systems can include various non-terrestrial network systems, such as satellites or unmanned aircraft systems (UAS) platforms, etc., which transmit wireless frequencies, and they are not listed here one by one.
  • UAS unmanned aircraft systems
  • the NTN system may specifically be a satellite communication system or other non-terrestrial network system, and the positioning method in the present solution may be applied in the field of satellite communication.
  • Figures 1A, 1B and 1C are architectural diagrams of several communication systems provided in embodiments of the present application.
  • one or more terminal devices may exist in the coverage area of a cell of the satellite.
  • the coverage area of the cell may be an area covered by one or more beams of the satellite, or an area at the same level as the cell in the NR system.
  • ground terminal equipment such as mobile terminals
  • network equipment such as 5G base stations
  • This type of communication architecture is also called a transparent satellite network architecture, and it can be seen that the base station is on the ground.
  • ground terminal equipment such as mobile terminals
  • network equipment such as 5G base stations
  • This type of communication architecture is also called a regenerative satellite network architecture, which shows that the functions of the base station or part of the base station are on the satellite.
  • ground terminal equipment such as mobile terminals access the network through the air interface
  • the functions of network equipment such as 5G base stations or part of network equipment (such as 5G base stations) are deployed on satellites and connected to the ground station and the 5G core network on the ground through wireless links
  • the functions of part of network equipment are deployed on the ground and directly connected to the 5G core network on the ground through wireless links, and connected to the ground station of satellite communication.
  • the functions of the base station or part of the base station are respectively on the satellite and the ground.
  • the satellites in the above system can be replaced by other NTN devices such as high altitude platform stations (HAPS), and this application does not impose any restrictions on this.
  • HAPS high altitude platform stations
  • Terminal device A mobile device that supports the 5G new air interface, typically a user terminal, wearable device, etc. It can access the satellite network through the air interface and initiate calls, surf the Internet, and other services.
  • 5G base station mainly provides wireless access services, dispatches wireless resources to access terminals, provides reliable wireless transmission protocols and data encryption protocols, etc.
  • 5G core network including user access control, mobility management, session management, user security authentication, billing and other services. It consists of multiple functional units, which can be divided into functional entities of control plane and data plane. Among them, the access and mobility management unit (AMF) is responsible for user access management, security authentication, and mobility management. The location management unit (LMF) is responsible for managing and controlling the positioning service requests of the target terminal and processing positioning related information. The user plane unit (UPF) is responsible for managing the transmission of user plane data, traffic statistics and other functions.
  • AMF access and mobility management unit
  • LMF location management unit
  • UPF user plane unit
  • Ground station responsible for forwarding signaling and business data between satellite base stations and 5G core network.
  • 5G New Radio The wireless link between user equipment and base stations.
  • Xn interface It is the interface between 5G base stations and is mainly used for signaling interaction such as switching.
  • NG interface It is the interface between the 5G base station and the 5G core network, which mainly interacts with the core network's non-access stratum (NAS) and other signaling, as well as user business data.
  • NAS non-access stratum
  • the technical solution provided in this application mainly involves two execution entities, namely network equipment and terminal equipment, and can be applied to communication systems such as 5G, especially in the communication process of non-terrestrial networks.
  • the terminal devices involved in the embodiments of the present application include but are not limited to being connected via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (DSL), digital cables, direct cable connections; and/or another data connection network; and/or via wireless interfaces, such as: for cellular networks, wireless local area networks (WLAN), digital television networks such as digital video broadcast-handheld (DVB-H) networks, satellite networks, amplitude modulation-frequency modulation (AM-FM) broadcast transmitters; and/or another terminal device configured to receive/send communication signals; and/or an Internet of Things (IoT) device.
  • a terminal device configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal” or "mobile terminal”.
  • terminal equipment examples include, but are not limited to, satellite or cellular telephones; personal communications system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; personal digital assistants (PDAs) that may include radiotelephones, pagers, Internet/intranet access, web browsers, notepads, calendars, and/or global positioning system (GPS) receivers; and conventional laptop and/or handheld receivers or other electronic devices that include radiotelephone transceivers.
  • Terminal equipment may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • UE user equipment
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN), etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal area network
  • PLMN future evolved public land mobile network
  • the network device involved in the embodiments of the present application can provide communication coverage in a specific geographical area, and can communicate with one or more terminal devices located in the coverage area, and can also be used to communicate with one or more base stations with partial terminal functions (such as communication between a macro base station and a micro base station, such as an access point).
  • the network device can be a base station (base transceiver station, BTS) in a satellite, GSM system or CDMA system, an evolved base station (evolved Node B, eNB) in an LTE system, or a next generation base station node (next generation node base station, gNB) in a 5G system or NR system, as well as other satellite base stations and satellite relay nodes.
  • the network device can also be an access point (access point, AP), a transport node (transport point, TRP), a central unit (central unit, CU) or other network entities, and can include some or all of the above network entity functions.
  • the device with communication function in the network/system in the embodiment of the present application can be called a communication device.
  • the communication device may include a network device and a terminal device with communication function, and the network device and the terminal device may be the specific devices described above, which will not be repeated here; the communication device may also include other devices in the communication system, such as other network entities such as a network controller and a mobile management entity, which is not limited in the embodiment of the present application.
  • the two descriptions of "satellite” and “satellite network equipment” are equivalent. That is, the satellite mentioned in this application refers to a collection of satellites and other network equipment related to satellite communications.
  • a cell in the NTN system can be the projection area of a satellite beam on the ground, or the projection area of multiple satellite beams on the ground, or it can be a partial area of the projection area of one beam or multiple beams on the ground, and the embodiments of the present application are not limited to this.
  • the terminal equipment needs to frequently switch beams and cells due to the movement of the satellite.
  • the coverage area of the satellite cell is much larger than the coverage area of the ground cell.
  • the coverage range can include the coverage range of many ground cells. Therefore, these ground cells can be used as neighboring cells of satellite cells, and the terminal equipment can perform cell measurements on these ground cells to facilitate cell reselection and switching.
  • the terminal equipment constantly measures the ground cells within the coverage range of the satellite cell, which will lead to high power consumption of the terminal equipment. Therefore, how to reduce the power consumption of the terminal equipment is an urgent problem to be solved.
  • an embodiment of the present application provides a communication method that can reduce the power consumption of a terminal device.
  • the method can be applied to the communication system shown in Figures 1A, 1B, and 1C, or the method is applied to a first communication device and a second communication device, the first communication device can be the terminal device described above, and the second communication device can be the network device described above.
  • the interaction diagram in this application uses the network device and the terminal device as the execution subject of the interaction diagram as an example to illustrate the method, but this application does not limit the execution subject of the interaction diagram.
  • the network device in the interaction diagram can also be a chip, a chip system, or a processor that supports the network device to implement the method, or a logical node, a logical module, or software that can implement all or part of the network device functions;
  • the terminal device in the interaction diagram can also be a chip, a chip system, or a processor that supports the terminal to implement the method.
  • sending information to...(terminal) can be understood as the destination end of the information being the terminal, and can include directly or indirectly sending information to the terminal.
  • receiving information from...(terminal) can be understood as the source end of the information being the terminal, and can include directly or indirectly receiving information from the terminal.
  • the information may be processed as necessary between the source end and the destination end of the information transmission. For example, at the source end of the information transmission, one or more of the following processes, including encoding, modulation, power matching, and resource mapping, can be performed on the information. For another example, at the destination end of receiving the information, one or more of the following processes, including resource de-mapping, demodulation, and decoding, can be performed on the information. Similar expressions in the present application can be understood similarly and will not be repeated here.
  • Figure 2 is an interactive schematic diagram of a communication method provided in an embodiment of the present application. As shown in Figure 2, the method includes but is not limited to the following steps.
  • a network device sends a first message, and correspondingly, a terminal device receives the first message.
  • the first message includes information of multiple sub-areas in a first TN coverage area, and the first TN coverage area overlaps with a coverage area of an NTN cell.
  • the NTN cell is a service cell of the terminal device, that is, the NTN cell provides services for the terminal device.
  • the coverage area of the NTN cell overlaps with a plurality of TN coverage areas, and the plurality of TN coverage areas include a first TN coverage area, and the path of the terminal device passes through the first TN coverage area.
  • Any TN coverage area in the plurality of TN coverage areas may be fully or partially included in the NTN coverage area.
  • the first TN coverage area may be included in the coverage area of the NTN cell, or a part of the first TN coverage area may be included in the coverage area of the NTN.
  • the reference points corresponding to any two TN coverage areas in the plurality of TN coverage areas are different, and the coverage ranges of any two TN coverage areas in the plurality of TN coverage areas are different.
  • the coverage ranges of any two TN coverage areas in the plurality of TN coverage areas do not overlap, or the coverage ranges of any two TN coverage areas in the plurality of TN coverage areas may overlap.
  • the area of the overlapping part of any two TN coverage areas in the plurality of TN coverage areas is less than a first threshold.
  • the first threshold may be determined by the area of the TN coverage area.
  • an area of a portion of the first TN coverage area that overlaps with a second TN coverage area is less than 10% of an area of the first TN coverage area, and the second TN coverage area is included in the plurality of TN coverage areas.
  • the first TN coverage area may include multiple ground cells.
  • the first TN coverage area may include multiple sub-areas, or the first TN coverage area overlaps with the coverage of the multiple sub-areas. Any sub-area of the multiple sub-areas includes at least one ground cell.
  • the information of the multiple sub-areas may include the location information of the multiple sub-areas, for example, the information of the multiple sub-areas indicates the reference point of each sub-area in the multiple sub-areas. Including reference point information and radius information corresponding to multiple sub-areas respectively. The reference point corresponding to the sub-area can be understood as the center point or vertex of the sub-area.
  • the reference point may be the vertex or center point of the first sub-area.
  • the reference point of the first sub-area may be the center point of the first sub-area, that is, the coverage of the first sub-area includes a circular area with the reference point corresponding to the first sub-area as the center.
  • the reference points of any two of the multiple sub-areas are different, and the coverage of any two of the multiple sub-areas is different.
  • the coverage of any two of the multiple sub-areas does not overlap, or the coverage of any two of the multiple sub-areas may overlap.
  • the area of the overlapping portion of the coverage of any two of the multiple sub-areas is less than a second threshold.
  • the second threshold may be determined by the area of the sub-areas.
  • the area of the portion of the first sub-area that overlaps with the second sub-area is less than 10% of the area of the first sub-area.
  • the information of the plurality of sub-regions indicates a reference point of each of the plurality of sub-regions.
  • the information of the plurality of sub-regions includes position information (e.g., coordinates) of a reference point of each of the plurality of sub-regions.
  • the information of the plurality of sub-regions may also indicate at least one of the following information: a radius of each of the plurality of sub-regions, and a shape of each of the plurality of sub-regions.
  • the shapes of the multiple sub-areas may include any one of a circle, an ellipse, a triangle, and a square
  • the shape of the first sub-area may include any one of the following: a circle, an ellipse, a triangle, and a square. It is understood that the above shapes of the multiple sub-areas are only examples, and the shapes of the multiple sub-areas may also be other shape rules specified in the protocol, and the above shapes of a circle, an ellipse, a triangle, a square, etc. should not be regarded as The solution is to define the shapes of the multiple sub-regions.
  • the information of the multiple sub-regions includes the position parameters of each sub-region in the multiple sub-regions, and the position parameters corresponding to sub-regions of different shapes may be different, that is, the position parameters of any sub-region are determined by its shape.
  • the terminal device can interpret the position parameters corresponding to the sub-regions according to the shapes of the sub-regions. For example, when the shape of the first sub-region is an ellipse, the position parameters of the first sub-region may include the midpoint, the major semi-axis, and the minor semi-axis of the ellipse corresponding to the first sub-region.
  • the position parameters of the first sub-region may include the coordinates of the three vertices of the triangle, or the position parameters of the first sub-region include the center point of the triangle and the distance between each vertex and the center point.
  • the shapes of the multiple sub-areas within the first TN coverage area may be the same, and the shapes of the multiple sub-areas may be configured by a network device or specified by a protocol.
  • the radii of the multiple sub-areas may also be the same, and the radii corresponding to the multiple sub-areas may be configured by a network device or specified by a protocol.
  • the network device does not need to indicate the shape or radius of each of the multiple sub-areas separately, thereby reducing signaling overhead.
  • the information of the multiple sub-areas includes the reference point information of the second sub-area and the second indication information
  • the second indication information is used to indicate the difference between the coordinates of the reference point of the third sub-area and the coordinates of the reference point of the second sub-area
  • the second sub-area and the third sub-area are different sub-areas in the multiple sub-areas.
  • the coordinates of the reference points of the second sub-area and the third sub-area include coordinates on the three coordinate axes of X, Y, and Z
  • the second indication information can indicate the difference between the coordinates of the reference point of the third sub-area and the coordinates of the reference point of the second sub-area on the three coordinate axes of X, Y, and Z.
  • the coordinates of the reference point of the second sub-area are (x1, y1, z1)
  • the coordinates of the reference point of the third sub-area are (x1+1, y1+2, z1+1)
  • the second indication information indicates that the difference between the coordinates of the reference point of the third sub-area and the coordinates of the reference point of the second sub-area is (1, 2, 1).
  • the second indication information can also indicate the difference between the radius of the third sub-area and the second sub-area.
  • the radius of the second sub-area is 10, and the radius of the third sub-area is 12, and the second indication information indicates that the difference between the radius of the third sub-area and the second sub-area is 2.
  • the reference points of two sub-areas among the multiple sub-areas in the first TN coverage area are located close to each other, so the reference points of the multiple sub-areas can be indicated by the coordinate difference between them and the reference point of the second sub-area, that is, the coordinates of the reference points of each sub-area in the multiple sub-areas can be indicated in the form of difference, which can reduce the signaling overhead of indicating the position of the reference points of each sub-area.
  • the information of multiple sub-areas includes the difference between the coordinates of the reference point of any sub-area in the multiple sub-areas and the coordinates of the reference point of the first TN coverage area.
  • the first message may include the coordinates of the reference point of the first TN coverage area, or the terminal device may obtain the coordinates of the reference point of the first TN coverage area based on the broadcast message of the network device.
  • the reference points of multiple sub-areas in the first TN coverage area are close to the reference point of the first TN coverage area, so the reference points of the multiple sub-areas can be indicated in the form of the coordinate difference between them and the reference point of the first TN coverage area, which can reduce the signaling overhead of indicating the reference point positions of each sub-area.
  • the terminal device measures the signal quality of a cell within the coverage of a first sub-area.
  • the first sub-area is included in a plurality of sub-areas, and a path of the terminal device passes through the first sub-area.
  • the coverage of the first sub-area includes a plurality of ground cells.
  • the terminal device passes through or is about to pass through the first sub-area, it can measure the signal quality of the ground cells within the coverage of the first sub-area to facilitate cell reselection.
  • the path of the terminal device may also pass through two or more sub-areas among the multiple sub-areas within the coverage of the first TN, and the terminal device may measure the ground cells within the coverage of the corresponding sub-area when passing through or about to pass through the corresponding sub-area.
  • the path of the terminal device includes the path predicted by the terminal device, that is, the path that the terminal device may pass through in the future.
  • the path of the terminal device passing through the first TN coverage area (or the first sub-area) can be understood as the terminal device is about to pass through the first TN coverage area (or the first sub-area), or the terminal device is passing through the first TN coverage area (or the first sub-area).
  • the terminal device after the terminal device obtains information of multiple sub-areas within the coverage range of the first TN, it measures the signal quality of the cells within the first sub-area passed through based on its own path, that is, it only needs to measure the ground cells within the coverage range of the NTN cell that are closer to the terminal device, and does not need to measure the ground cells within the coverage range of the NTN cell that are farther away from the terminal device, thereby reducing the power consumption of the terminal device.
  • the coverage range of the NTN cell is large (such as a suburban scene), the power consumption of the terminal device can be more effectively reduced.
  • the level of the above-mentioned first TN coverage area is the first level
  • the level of the first sub-area is the second level.
  • the terminal device can send a fourth message to the network device according to its path, and the fourth message is used to request information about the third-level coverage area.
  • the third-level coverage area is included in the first sub-area.
  • the terminal device measures the signal quality of the cell in at least one third-level coverage area in the first sub-area, and the path of the terminal device passes through the at least one third-level coverage area.
  • the network device can divide the coverage of the NTN cell into different levels of ground coverage areas, and the ground coverage areas of different levels are inclusive.
  • the coverage area of the NTN cell includes the ground coverage area of the first level (such as the first TN coverage area), the first level of ground coverage area includes the second level of ground coverage area (such as the first sub-area), and the second level of ground coverage area includes the third level of ground coverage area.
  • the terminal device obtains the information of the ground coverage area of one level, it can determine whether to request the information of the ground coverage area of the next level of the level based on its own needs. For example, after the terminal device obtains the information of the first sub-area (the second level of ground coverage area), it determines whether to obtain the information of the third level of ground coverage area based on its own needs.
  • the number of levels of ground coverage areas within the coverage area of the NTN cell may be specified by a protocol or determined by a network device.
  • a protocol may specify that the coverage area of the NTN cell may be divided into at most three different levels of ground coverage areas.
  • the terminal device can determine whether to request the information of the third-level coverage area based on the certainty of its path.
  • the certainty of the path of the terminal device can be determined by the number of alternative paths or the destination of the terminal device, that is, the terminal device can determine whether to request the information of the third-level coverage area based on the number of alternative paths or destinations.
  • the number of alternative paths can be the number of paths in the direction of travel of the terminal device, or the number of paths between the terminal device and the destination.
  • the terminal device when the number of alternative paths is less than or equal to the third threshold, it means that the certainty of the terminal device is large, and the terminal device sends a fourth message to the network device to request the information of the third-level coverage area, so as to further reduce the number of ground cells that the terminal device needs to measure and reduce the energy consumption of the terminal device.
  • the number of alternative paths is greater than the third threshold, it means that the certainty of the path of the terminal device is small, and the terminal device does not send the fourth message to the network device, but measures the ground cells in the first sub-area to facilitate cell switching.
  • the terminal device may determine whether to request the information of the third-level coverage area based on its energy consumption requirements and the coverage area of the first sub-area. For example, when the highest energy consumption of the cell measurement performed by the terminal device is less than the fourth threshold value, and the coverage area of the first sub-area is greater than the fifth threshold value, the terminal device sends a fourth message to request the information of the third-level coverage area. After the terminal device obtains the information of the third-level coverage area, it measures the signal quality of the ground cells within the third-level coverage area, thereby further reducing the number of ground cells that the terminal device needs to measure to meet the energy consumption requirements of the terminal device.
  • Figure 3 is an interactive schematic diagram of another communication method provided in an embodiment of the present application. As shown in Figure 3, the method includes but is not limited to the following steps.
  • the network device sends a second message, and correspondingly, the terminal device receives the second message.
  • the second message includes information of multiple TN coverage areas.
  • the network device may broadcast the second message, which includes information of multiple TN coverage areas within the coverage range of the NTN cell.
  • the second message may include a TN coverage area list, which includes the identification and location information of the multiple TN coverage areas.
  • the location information of the TN coverage area may include a reference point and a radius.
  • Each TN coverage area in the multiple TN coverage areas includes the coverage area of at least two network devices.
  • the terminal device sends a third message, and correspondingly, the network device receives the third message.
  • the third message is used to indicate the first TN coverage area.
  • the terminal device may determine the first TN coverage area through which the path of the terminal device passes from multiple TN coverage areas based on its path information, and indicate the first TN coverage area through a third message to request information of multiple sub-areas within the first TN coverage area.
  • the third message may include identification information of the first TN coverage area.
  • the network device sends a first message, and correspondingly, the terminal device receives the first message.
  • the first message includes information of multiple sub-areas in the first TN coverage area.
  • the network device may divide the first TN coverage area into multiple sub-areas based on the ground cells included in the first TN coverage area, and send information of the multiple sub-areas to the terminal device through the first message.
  • Any of the multiple sub-areas includes at least one ground cell.
  • the method shown in FIG. 3 further includes step 304 and step 305 .
  • the terminal device sends first indication information, and correspondingly, the network device receives the first indication information.
  • the first indication information indicates whether the first sub-area includes or does not include a hetero-frequency neighbor cell.
  • the frequency of the hetero-frequency neighboring cell is not in the same frequency band as the frequency of the service cell (i.e., the NTN cell) of the terminal device.
  • the terminal device determines the first sub-area based on its path, it determines whether the first sub-area includes a hetero-frequency neighboring cell.
  • the first indication information indicates that the first sub-area includes a hetero-frequency neighboring cell; in the case where the first sub-area does not include a hetero-frequency neighboring cell, the first indication information indicates that the first sub-area does not include a hetero-frequency neighboring cell.
  • the first indication information may also be used to instruct the network device to configure or not configure the measurement time of the hetero-frequency neighbor cell.
  • the first indication information indicates that the network device does not need to configure the measurement time of the inter-frequency neighbor cell.
  • the first indication information indicates that the network device does not need to configure the measurement time of the inter-frequency neighbor cell.
  • the first indication information can be used to indicate whether the network device configures a longer hetero-frequency neighbor cell measurement period for the terminal device to perform hetero-frequency neighbor cell measurement. For example, when hetero-frequency neighbor cells are included in the first sub-area, the first indication information indicates that the network device configures a longer hetero-frequency neighbor small measurement period for the terminal device. For another example, when hetero-frequency neighbor cells are not included in the first sub-area, the first indication information indicates that the network device does not configure a longer hetero-frequency neighbor small measurement period for the terminal device.
  • the terminal device can indicate through the first indication information whether the first sub-area includes or does not include hetero-frequency neighbor cells, thereby instructing the network device to configure the measurement time of the hetero-frequency neighbor cells or the measurement period of the hetero-frequency neighbor cells for the terminal device, so that the terminal device can better measure the hetero-frequency neighbor cells.
  • the network device sends first time information, and correspondingly, the terminal device receives the first time information, where the first time information is used to instruct the terminal device to measure the time of the hetero-frequency neighboring cell of its service cell.
  • the first time information (or referred to as the hetero-frequency measurement interval) may include the time when the terminal device measures the hetero-frequency neighboring cell or the period when the terminal device measures the hetero-frequency neighboring cell. After receiving the first time information, the terminal device measures the hetero-frequency neighboring cell based on the first time information.
  • the network device when the first sub-area includes a hetero-frequency neighboring cell, the network device sends the first time information so that the terminal device can measure the hetero-frequency neighboring cell based on the first time information. For example, when the first indication information indicates that the first sub-area includes a hetero-frequency neighboring cell, the network device sends the first time information. When the first sub-area does not include a hetero-frequency neighboring cell, the network device does not send the first time information.
  • the terminal device when the terminal device does not pass through multiple TN coverage areas that overlap with the coverage area of the NTN cell, the terminal device can indicate to the network device through the first indication information that there is no need to configure the measurement time of the hetero-frequency neighboring cells or configure a longer hetero-frequency neighboring cell measurement period.
  • the terminal device does not need to switch from the NTN cell to the terrestrial cell, so the terminal device does not need to measure the signal quality of the terrestrial cell, and the terminal device can indicate to the network device that there is no need to configure the measurement time of the hetero-frequency neighboring cells or configure a longer hetero-frequency neighboring cell measurement period.
  • the terminal device can indicate to the network device through the first indication information that there is no need to configure the measurement time of the hetero-frequency neighboring cells or configure a longer hetero-frequency neighboring cell measurement period.
  • the terminal device measures the signal quality of cells within the coverage of a first sub-area.
  • the first sub-area is included in a plurality of sub-areas, and a path of the terminal device passes through the first sub-area.
  • step 306 can refer to the specific implementation of step 202 in FIG. 2 , which will not be described in detail here.
  • the coverage area of the NTN cell overlaps with multiple TN coverage areas, and the network device can broadcast the information of the multiple TN coverage areas.
  • the terminal device determines the first TN coverage area through which its path passes based on the information of the multiple TN coverage areas, and sends the information of the first TN coverage area to the network device to request the information of multiple sub-areas within the first TN coverage area.
  • the network device only needs to broadcast the information of the multiple TN coverage areas, and the terminal device can obtain the information of the sub-areas of the TN coverage area through which its path passes based on interaction, without broadcasting the information of the sub-areas within each TN coverage area, which can effectively reduce the signaling overhead.
  • the terminal device only needs to measure the signal quality of the cell in the first sub-area, without measuring all ground cells within the coverage range of the NTN cell, which can reduce the power consumption of the terminal device.
  • the coverage of the NTN cell overlaps with TN coverage area 1, TN coverage area 2, and TN coverage area 3, and the second message that the network device can broadcast includes information of the TN coverage area 1, TN coverage area 2, and TN coverage area 3.
  • the path of the terminal device passes through TN coverage area 3, and the terminal device reports the identifier of the TN coverage area 3 through a third message.
  • the network device then divides the first TN coverage area into three sub-areas according to the coverage of the ground cells in the TN coverage area, namely, sub-area 1, sub-area 2, and sub-area 3.
  • the terminal device determines that it will pass through sub-area 1 and sub-area 2 according to its path, and measures the signal quality of the ground cells in sub-area 1 and sub-area 2, without measuring the signal quality of the cells within the coverage of TN coverage area 1, TN coverage area 2, and sub-area 3 within TN coverage area 3, thereby effectively reducing the power consumption of the terminal device.
  • the level of the above-mentioned first TN coverage area is the first level, and the level of the first sub-area is the second level.
  • the terminal device can send a fourth message to the network device according to its path or energy consumption requirements.
  • the fourth message is used to request information about the third-level coverage area.
  • the third-level coverage area is included in the first sub-area.
  • the terminal device measures the signal quality of the cell in at least one third-level coverage area in the first sub-area, and the path of the terminal device passes through the at least one third-level coverage area, thereby reducing the energy consumption of the terminal device.
  • Figure 5 is an interactive schematic diagram of another communication method provided in an embodiment of the present application. As shown in Figure 5, the method includes but is not limited to the following steps.
  • the terminal device sends third indication information, and correspondingly, the network device receives the third indication information, the third indication information indicating the path of the terminal device, the terminal device is served by the NTN cell, and the coverage area of the NTN cell overlaps with multiple TN coverage areas.
  • the first indication information may also indicate at least one of the location, destination, and number of alternative paths of the terminal device.
  • the network device sends the fifth message, and correspondingly, the terminal device receives the fifth message, the fifth message is used to indicate the first sub-area, the path of the terminal device passes through the first sub-area, the first sub-area is included in the first TN coverage area, the above-mentioned multiple TN coverage areas include the first TN coverage area, and the path of the terminal device passes through the first TN coverage area.
  • the fifth message is used to instruct the terminal device to measure the signal quality of the cell in the first sub-area.
  • the network device can determine the first TN coverage area through which the path of the terminal device passes, and divide the first TN coverage area into multiple sub-areas based on the ground cells contained in the first TN coverage area. Any sub-area of the multiple sub-areas includes at least one ground cell.
  • the network device determines the first sub-area through which the path of the terminal device passes, and sends the information of the first sub-area to the terminal device through the fifth message.
  • the shape of the first sub-region includes any one of the following: circle, ellipse, triangle, square.
  • the fifth message may include a reference point of the first sub-area.
  • the fifth message further includes at least one of the following information: the radius of the first sub-area, the shape of the first sub-area.
  • the terminal device can determine the coverage of the first sub-area based on the fifth message, thereby measuring the signal quality of the cell within the coverage of the first sub-area.
  • the fifth message may include information about cells within the coverage of the first sub-area.
  • the fifth message may include information such as identification and frequency of cells within the coverage of the first sub-area.
  • the terminal device may directly measure cells within the coverage of the first sub-area without performing a cell search, thereby reducing energy consumption of the terminal device and improving efficiency of cell measurement.
  • the terminal device can report its path information to the network device, so that the network device can instruct the terminal device to measure the cells within the first sub-area through which its path passes according to the path information, so that the terminal device only needs to measure the ground cells within the coverage area of the NTN cell that are closer to the terminal device, and there is no need to measure the ground cells within the coverage area of the NTN cell that are farther away from the terminal device, thereby reducing the power consumption of the terminal device.
  • the network device may instruct the terminal device not to perform cell measurement.
  • the method shown in FIG. 5 further includes step 503 and step 504 .
  • the terminal device sends first indication information, and correspondingly, the network device receives the first indication information, where the first indication information indicates whether the first sub-area includes or does not include the hetero-frequency neighboring cell.
  • the network device sends the first time information, and correspondingly, the terminal device receives the first time information, where the first time information is used to instruct the terminal device to measure the time of the inter-frequency neighboring cell of the service cell of the terminal device.
  • step 503 and step 504 can refer to the specific implementation of step 304 and step 305 in Figure 3, which will not be described in detail here.
  • the method shown in FIG. 5 further includes step 505 .
  • the terminal device measures the signal quality of cells within the coverage area of the first sub-area.
  • step 505 can refer to the specific implementation of step 202 in Figure 2, which will not be described in detail here.
  • the level of the above-mentioned first TN coverage area is the first level, and the level of the first sub-area is the second level.
  • the terminal device can send a fourth message to the network device according to its path or energy consumption requirements.
  • the fourth message is used to request information about the third-level coverage area.
  • the third-level coverage area is included in the first sub-area.
  • the terminal device measures the signal quality of the cell in at least one third-level coverage area in the first sub-area, and the path of the terminal device passes through the at least one third-level coverage area, thereby reducing the energy consumption of the terminal device.
  • the present application divides the functional modules of the communication device according to the above method embodiment.
  • each functional module can be divided according to each function, or two or more functions can be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.
  • the communication device of the embodiment of the present application will be described in detail below in conjunction with Figures 6 to 8.
  • FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the communication device includes a processing unit 601 and a transceiver unit 602.
  • the transceiver unit 602 can implement corresponding communication functions, and the processing unit 601 is used for data processing.
  • the transceiver unit 602 can also be called a communication interface or a communication unit.
  • the communication device can be used to execute the actions performed by the terminal device in the above method embodiments.
  • the communication device can be a terminal device or a component that can be configured in the terminal device (such as a chip or system, etc.), and the transceiver unit 602 is used to execute the transceiver-related operations of the terminal device in the above method embodiments, and the processing unit 601 is used to execute the processing-related operations of the terminal device in the above method embodiments.
  • the transceiver unit 602 is used to receive a first message; the processing unit 601 is used to measure the signal quality of a cell within the coverage area of the first sub-area.
  • the transceiver unit 602 is further configured to receive a second message and send a third message.
  • the transceiver unit 602 is further used to receive first time information.
  • the transceiver unit 602 is further used to send first indication information.
  • the communication device can be used to execute the actions performed by the network device in the above method embodiments.
  • the communication device can be a network device or a component that can be configured in the network device, such as a chip or a system, etc.
  • the transceiver unit 602 is used to execute the transceiver related operations of the network device in the above method embodiments
  • the processing unit 601 is used to execute the network device processing related operations in the above method embodiments.
  • the processing unit 601 is used to generate a first message; the transceiver unit 602 is used to send the first message.
  • the transceiver unit 602 is further configured to send a second message and receive a third message.
  • the transceiver unit 602 is also used to send the first time information.
  • the transceiver unit 602 is further used to receive first indication information.
  • the communication device can be used to execute the actions performed by the network device in the above method embodiments.
  • the communication device can be a network device or a component that can be configured in the network device, such as a chip or a system, etc.
  • the transceiver unit 602 is used to execute the transceiver related operations of the network device in the above method embodiments
  • the processing unit 601 is used to execute the network device processing related operations in the above method embodiments.
  • the transceiver unit 602 is configured to receive third indication information and send a fifth message.
  • the transceiver unit 602 is also used to send the first time information.
  • the transceiver unit 602 is further used to receive first indication information.
  • the communication device can be used to execute the actions performed by the terminal device in the above method embodiments.
  • the communication device can be a terminal device or a component that can be configured in the terminal device (such as a chip or a system, etc.), and the transceiver unit 602 is used to execute the transceiver related operations of the terminal device in the above method embodiments, and the processing unit 601 is used to execute the terminal device processing related operations in the above method embodiments.
  • the transceiver unit 602 is configured to send third indication information and receive a fifth message.
  • the processing unit 601 is configured to measure signal quality of cells within the coverage of the first sub-area.
  • the transceiver unit 602 is further used to receive first time information.
  • the transceiver unit 602 is further used to send the first indication information.
  • the above-mentioned communication device may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 601 may read the instructions and/or data in the storage unit so that the communication device implements the above-mentioned method embodiment.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 601 may read the instructions and/or data in the storage unit so that the communication device implements the above-mentioned method embodiment.
  • transceiver unit and the processing unit shown in the embodiment of the present application is only an example.
  • specific functions or execution steps of the transceiver unit and the processing unit reference can be made to the above-mentioned method embodiment, which will not be described in detail here.
  • the processing unit 601 may be one or more processors, the transceiver unit 602 may be a transceiver, or the transceiver unit 602 may also be a sending unit and a receiving unit, the sending unit may be a transmitter, the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one device, such as a transceiver.
  • the processor and the transceiver may be coupled, etc., and the embodiment of the present application does not limit the connection mode of the processor and the transceiver.
  • the process of sending information in the above method can be understood as the process of outputting the above information by the processor.
  • the processor When outputting the above information, the processor outputs the above information to the transceiver so that it is transmitted by the transceiver. After the above information is output by the processor, it may also need to be processed in other ways before it reaches the transceiver. Similarly, the process of receiving information in the above method can be understood as the process of the processor receiving the input information.
  • the processor receives the input information
  • the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to be processed in other ways before being received by the processor.
  • the communication device 70 includes one or more processors 720 and a transceiver 710 .
  • the communication device can be used to execute the steps or functions performed by the terminal device in the above method embodiments.
  • the transceiver 710 is configured to receive a first message; and the processor 720 is configured to measure signal quality of cells within the coverage of the first sub-area.
  • the transceiver 710 is further configured to receive a second message and send a third message.
  • the transceiver 710 is also used to receive the first time information.
  • the transceiver 710 is also used to send first indication information.
  • the communication device can be used to execute the steps or functions performed by the network device in the above method embodiments.
  • the processor 720 is used to generate a first message; and the transceiver 710 is used to send the first message.
  • the transceiver 710 is further configured to send a second message and receive a third message.
  • the transceiver 710 is also used to send the first time information.
  • the transceiver 710 is further used to receive first indication information.
  • the communication device can be used to execute the steps or functions performed by the network device in the above method embodiments.
  • the transceiver 710 is configured to receive third indication information and send a fifth message.
  • the transceiver 710 is also used to send the first time information.
  • the transceiver 710 is further used to receive first indication information.
  • the communication device can be used to execute the steps or functions performed by the terminal device in the above method embodiments.
  • the transceiver 710 is configured to send the third indication information and receive the fifth message.
  • the processor 720 is configured to measure signal quality of cells within the coverage of the first sub-area.
  • the transceiver 710 is also used to receive the first time information.
  • the transceiver 710 is also used to send the first indication information.
  • transceiver and the processor shown in the embodiments of the present application is only an example.
  • specific functions or execution steps of the transceiver and the processor reference can be made to the above-mentioned method embodiments, which will not be described in detail here.
  • the description of the first message, the second message, the third message, the fifth message, the first time information, the first indication information, the first sub-area, etc. can also be referred to the introduction in the above method embodiments, and will not be described in detail here.
  • the transceiver may include a receiver and a transmitter, wherein the receiver is used to perform a receiving function (or operation) and the transmitter is used to perform a transmitting function (or operation).
  • the transceiver is used to communicate with other devices/devices via a transmission medium.
  • the communication device 70 may also include one or more memories 730 for storing program instructions and/or data, etc.
  • the memory 730 is coupled to the processor 720.
  • the coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 720 may operate in conjunction with the memory 730.
  • the processor 720 may execute program instructions stored in the memory 730.
  • at least one of the one or more memories may be included in the processor.
  • connection medium between the transceiver 710, the processor 720 and the memory 730 is not limited in the embodiment of the present application.
  • the memory 730, the processor 720, and the transceiver 710 are connected via a bus 740, which is represented by a thick line in FIG. 7 .
  • the connection between other components is only for schematic illustration and is not intended to be limiting.
  • the bus can be divided into an address bus, a data bus, a control bus, etc.
  • FIG. 7 only uses one thick line, but does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor, etc.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor, etc.
  • the memory may include, but is not limited to, non-volatile memories such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM) or portable read-only memory (CD-ROM), etc.
  • the memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures and can be read and/or written by a computer (such as the communication device shown in the present application), but is not limited to this.
  • the memory in the embodiments of the present application can also be a circuit or any other device that can realize a storage function, which is used to store program instructions and/or data.
  • the processor 720 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program.
  • the memory 730 is mainly used to store the software program and data.
  • the transceiver 710 may include a control circuit and an antenna.
  • the control circuit is mainly used to convert the baseband signal and the radio frequency signal and to process the radio frequency signal.
  • the antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • the input and output devices such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.
  • the processor 720 can read the software program in the memory 730, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 720 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 720.
  • the processor 720 converts the baseband signal into data and processes the data.
  • the RF circuit and antenna may be arranged independently of the processor performing baseband processing.
  • the RF circuit and antenna may be arranged remotely from the communication device.
  • the communication device shown in the embodiment of the present application may also have more components than those in FIG. 7, and the embodiment of the present application is not limited to this.
  • the method performed by the processor and transceiver shown above is only an example, and the specific steps performed by the processor and transceiver can refer to the method described above.
  • the processing unit 601 may be one or more logic circuits, and the transceiver unit 602 may be an input-output interface, or a communication interface, or an interface circuit, or an interface, etc.
  • the transceiver unit 602 may also be a sending unit and a receiving unit, the sending unit may be an output interface, the receiving unit may be an input interface, and the sending unit and the receiving unit are integrated into one unit, such as an input-output interface.
  • the communication device shown in FIG8 includes a logic circuit 801 and an interface 802.
  • the above-mentioned processing unit 601 may be implemented with a logic circuit 801, and the transceiver unit 602 may be implemented with an interface 802.
  • the logic circuit 801 may be a chip, a processing circuit, an integrated circuit, or a system on chip (SoC) chip, etc.
  • the interface 802 may be a communication interface, an input-output interface, a pin, etc.
  • FIG8 is exemplified by taking the above-mentioned communication device as a chip, and the chip includes a logic circuit 801 and an interface 802.
  • the logic circuit and the interface may also be coupled to each other.
  • the embodiment of the present application does not limit the specific connection method between the logic circuit and the interface.
  • the communication device may be used to execute the steps or functions performed by the terminal device in the above method embodiment.
  • the interface 802 is used to input the first message; the logic circuit 801 is used to measure the signal quality of the cell within the coverage of the first sub-area.
  • the interface 802 is also used to input the second message and output the third message.
  • the interface 802 is also used to receive the first time information.
  • the interface 802 is also used to output the first indication information.
  • the communication device can be used to execute the steps or functions performed by the network device in the above method embodiment.
  • the logic circuit 801 is used to generate a first message; the interface 802 is used to output the first message.
  • the interface 802 is also used to output the second message and input the third message.
  • the interface 802 is also used to output the first time information.
  • the interface 802 is also used to input the first indication information.
  • the communication device can be used to execute the steps or functions performed by the network device in the above method embodiment.
  • the interface 802 is used to input the third indication information and output the fifth message.
  • the interface 802 is also used to output the first time information.
  • the interface 802 is also used to input the first indication information.
  • the communication device may be used to execute the steps or functions performed by the terminal device in the above method embodiment.
  • the interface 802 is used to output the third indication information and input the fifth message.
  • the logic circuit 801 is used to measure the signal quality of the cell within the coverage of the first sub-area.
  • the interface 802 is also used to input the first time information.
  • the interface 802 is also used to output the first indication information.
  • the description of the first message, the second message, the third message, the fifth message, the first time information, the first indication information, the first sub-area, etc. can also be referred to the introduction in the above method embodiments, and will not be described in detail here.
  • the communication device shown in the embodiment of the present application can implement the method provided in the embodiment of the present application in the form of hardware, or can implement the method provided in the embodiment of the present application in the form of software, etc., and the embodiment of the present application is not limited to this.
  • the embodiment of the present application also provides a communication system, which includes a first communication device and a second communication device, and the first communication device and the second communication device are used to execute the method in any of the above embodiments.
  • the first communication device is used to execute the steps or functions executed by the terminal device in the above method embodiment
  • the second communication device is used to execute the steps or functions executed by the network device in the above method embodiment.
  • the present application also provides a computer program, which is used to implement the operations and/or processing performed by the terminal device in the method provided by the present application.
  • the present application also provides a computer program, which is used to implement the operations and/or processing performed by the network device in the method provided by the present application.
  • the present application also provides a computer-readable storage medium, in which computer codes are stored.
  • the computer codes are executed on a computer, the computer executes the operations and/or processes performed by the terminal device in the method provided in the present application.
  • the present application also provides a computer-readable storage medium, in which computer codes are stored.
  • the computer codes are executed on a computer, the computer executes the operations and/or processes performed by the network device in the method provided in the present application.
  • the present application also provides a computer program product, which includes a computer code or a computer program.
  • a computer program product which includes a computer code or a computer program.
  • the present application also provides a computer program product, which includes a computer code or a computer program.
  • a computer program product which includes a computer code or a computer program.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned readable storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

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

Abstract

Procédé de communication, appareil de communication et système de communication, appliqués au domaine technique des communications. Le procédé comprend : un dispositif de réseau envoie un premier message, et parallèlement un dispositif terminal reçoit le premier message, le premier message comprenant des informations d'une pluralité de sous-zones dans une première zone de couverture TN de réseau terrestre, la première zone de couverture TN chevauchant la zone de couverture d'une cellule NTN de réseau non terrestre, la zone de couverture de la cellule NTN chevauchant une pluralité de zones de couverture TN, la pluralité de zones de couverture TN comprenant une première zone de couverture TN, et le trajet du dispositif terminal passant à travers la première zone de couverture TN ; le dispositif terminal mesure la qualité de signal d'une cellule dans la plage de couverture d'une première sous-zone, la première sous-zone étant incluse dans la pluralité de sous-zones, et le trajet du dispositif terminal dans la cellule NTN passant à travers la première sous-zone. En utilisant les modes de réalisation de l'invention, la consommation d'énergie du dispositif terminal peut être réduite.
PCT/CN2024/122894 2023-10-16 2024-09-30 Procédé de communication, appareil de communication et système de communication Pending WO2025082213A1 (fr)

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CN116033502A (zh) * 2023-02-01 2023-04-28 上海移远通信技术股份有限公司 用于无线通信的方法及装置
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WO2023193184A1 (fr) * 2022-04-07 2023-10-12 Oppo广东移动通信有限公司 Procédés et appareils de mesure de cellule, et dispositifs, support de stockage et produit de programme
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