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WO2025081476A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2025081476A1
WO2025081476A1 PCT/CN2023/125731 CN2023125731W WO2025081476A1 WO 2025081476 A1 WO2025081476 A1 WO 2025081476A1 CN 2023125731 W CN2023125731 W CN 2023125731W WO 2025081476 A1 WO2025081476 A1 WO 2025081476A1
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WO
WIPO (PCT)
Prior art keywords
cell reference
reference object
cell
indication information
time information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/125731
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English (en)
Chinese (zh)
Inventor
孔垂丽
李科新
罗禾佳
李榕
王俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2023/125731 priority Critical patent/WO2025081476A1/fr
Publication of WO2025081476A1 publication Critical patent/WO2025081476A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present application relates to the field of communications, and in particular to a communication method and a communication device.
  • NTN non-terrestrial network
  • SIB system information block
  • the actual remaining service time may be different from the remaining service time in the SIB, which may cause the terminal device to start neighbor cell measurement at the wrong time.
  • the communication method and communication device provided in the embodiments of the present application can prevent a terminal device from initiating neighboring cell measurement at an incorrect time.
  • a communication method which can be executed by a terminal device, where the terminal device can refer to the terminal device itself, or a processor, module, chip, or chip system that implements the method in the terminal device.
  • the following is an example of the method being executed by a terminal device.
  • the method includes: obtaining first indication information, determining time information corresponding to a target cell reference object according to the location information of the terminal device and the first indication information, and performing neighboring area measurement according to the time information corresponding to the target cell reference object.
  • the first indication information is used to indicate the location and time information corresponding to each of at least two cell reference objects.
  • the time information is used to indicate the time when the non-terrestrial network NTN device stops covering the cell.
  • the target cell reference object is a cell reference object determined from at least two cell reference objects based on the distance between the terminal device and each of the at least two cell reference objects.
  • the terminal device can obtain the first indication information, and determine the time information corresponding to the target cell reference object from the time information corresponding to multiple cell reference objects based on the first indication information and the location information of the terminal device, and then obtain the time when the NTN device corresponding to the location of the terminal device stops covering the cell, thereby avoiding starting the neighboring cell measurement at the wrong time, for example, avoiding delay in triggering the neighboring cell measurement, reducing the impact on communication continuity, and avoiding triggering the neighboring cell measurement in advance, thereby avoiding the terminal device from triggering the neighboring cell measurement too early or frequently, thereby reducing power consumption.
  • a communication method is provided, which can be performed by a non-terrestrial network NTN device, where the NTN device can refer to the NTN device itself, or a processor, module, chip, or chip system in the NTN device that implements the method.
  • the following is an example of the method being performed by the NTN device.
  • the method includes: obtaining first indication information, and sending the first indication information.
  • the first indication information is used to indicate the location and time information corresponding to each cell reference object in at least two cell reference objects, and the time information is used to indicate the time when the non-terrestrial network NTN device stops covering the cell.
  • the NTN device can obtain the first indication information and send the first indication information to the terminal device in the cell covered by it, the terminal device can determine the time information corresponding to the target cell reference object from the time information corresponding to multiple cell reference objects, and then obtain the time when the NTN device corresponding to the position of the terminal device stops covering the cell, thereby avoiding starting the neighboring cell measurement at the wrong time, for example, avoiding delay in triggering the neighboring cell measurement, reducing the impact on communication continuity, and avoiding triggering the neighboring cell measurement in advance, thereby avoiding the terminal device from triggering the neighboring cell measurement too early or frequently, thereby reducing power consumption.
  • At least two cell reference objects include: a first cell reference object and a cell reference object group, the cell reference object group includes other cell reference objects except the first cell reference object in the at least two cell reference objects; the first indication information is used to indicate the position and time information corresponding to each cell reference object in the at least two cell reference objects, including: the first indication information is used to indicate the following multiple items: the position corresponding to the first cell reference object; the position offset between each cell reference object in the cell reference object group and the first cell reference object; and the time information corresponding to each cell reference object in the at least two cell reference objects; or, the first indication information is used to indicate the following multiple items: the time information corresponding to the first cell reference object; the time offset between each cell reference object in the cell reference object group and the first cell reference object shift; and the position corresponding to each of the at least two cell reference objects.
  • the first cell reference object can be any one of the at least two cell reference objects. That is to say, for the first indication information, the position of the first cell reference object can be used as a reference to indicate the positions corresponding to other cell reference objects other than the first cell reference object by using a position offset relative to the first cell reference object (or a differential method); or, the time information corresponding to the first cell reference object can be used as a reference to indicate the time information corresponding to other cell reference objects other than the first cell reference object by using a differential method, thereby reducing the indication overhead.
  • the time information corresponding to each of the at least two cell reference objects includes: the time information corresponding to the first cell reference object, and the time offset between each cell reference object in the cell reference object group and the first cell reference object; or, the position corresponding to each of the at least two cell reference objects includes: the position corresponding to the first cell reference object, and the position offset between each cell reference object in the cell reference object group and the first cell reference object.
  • the indication overhead can be further reduced.
  • each cell reference object is a cell reference point
  • the target cell reference object is a target cell reference point.
  • each cell reference object is a cell reference line
  • the time information corresponding to multiple reference points on the cell reference line is the same
  • the target cell reference object is the target cell reference line.
  • the cell reference object can be a cell reference point or a cell reference line, so that the network side can flexibly indicate the cell reference point or the cell reference line according to the coverage strategy of the NTN device.
  • the location information corresponding to more cell reference points located on the cell reference line can be indicated by indicating some cell reference points, thereby reducing the indication overhead.
  • the first indication information is used to indicate the position and time information corresponding to each of the at least two cell reference objects, including: the first indication information is used to indicate the following multiple items: a set of cell reference point positions on each cell reference line, the reference point position set including the position corresponding to at least one cell reference point; and, the time information corresponding to each cell reference line.
  • the terminal device can determine the position corresponding to each cell reference line, and the first indication information only needs to indicate the time information corresponding to each cell reference line, which can reduce the indication overhead.
  • the position corresponding to each cell reference line is a position determined according to a reference point position set and a slope on each cell reference line, and the slope corresponding to each cell reference line is a slope determined according to a movement direction of the NTN device; the method provided by the first aspect further includes: obtaining indication information of the movement direction from the NTN device.
  • the indication information of the movement direction of the NTN device may be the ephemeris information of the NTN device, and the ephemeris information may include information such as the movement direction or movement speed of the NTN device. It can be understood that under some coverage strategies, the cell reference line and the movement direction of the NTN device are in a vertical relationship, and the terminal device can determine the slope corresponding to each cell reference line according to the movement direction of the NTN device, that is, the first indication information only needs to indicate the position corresponding to a cell reference point on each cell reference line, and the terminal device can also determine the position corresponding to each cell reference line, which can further reduce the indication overhead.
  • the position corresponding to each cell reference line is a position determined according to a reference point position set and a slope on each cell reference line, and the slope corresponding to each cell reference line is a slope determined according to a movement direction of the NTN device; the method provided in the first aspect further includes: sending indication information of the movement direction of the NTN device.
  • the indication information of the movement direction of the NTN device can be the ephemeris information of the NTN device, and the ephemeris information may include information such as the movement direction or movement speed of the NTN device.
  • the terminal device can determine the slope corresponding to each cell reference line according to the movement direction of the NTN device, that is, the first indication information only needs to indicate the position corresponding to a cell reference point on each cell reference line, and the terminal device can also determine the position corresponding to each cell reference line. In this way, the NTN device can further reduce the indication overhead of the first indication information and improve the reliability of the first indication information by sending the indication information of the movement direction of the NTN device.
  • the first indication information is further used to indicate the slope corresponding to each cell reference line. That is, the terminal device can determine the cell reference line according to the slope indicated by the first indication information. It can be understood that in some scenarios, the cell reference line may not be perpendicular to the movement direction of the NTN device, or the slopes of different cell reference lines are different. In these scenarios, the NTN device indicates the slope through the first indication information so that The terminal device can determine the slope corresponding to the cell reference line, and then determine the position corresponding to the cell reference line, which can reduce the complexity of calculating the position corresponding to the cell reference line of the terminal device and reduce the power consumption of the terminal device.
  • the target cell reference object is the cell reference object closest to the terminal device among the at least two cell reference objects.
  • the target cell reference object is the cell reference object closest to the terminal device, so that the time information corresponding to the target cell reference object is closer to the actual remaining service time of the terminal device, and then the terminal device performs neighboring cell measurement according to the time information corresponding to the target cell reference object, which can avoid starting neighboring cell measurement at the wrong time.
  • the first indication information is included in a system information block SIB. That is to say, the first indication information can be broadcast through the system information, so that the terminal device can obtain the first indication information when it is in a radio resource control RRC idle state or an RRC inactive state to achieve mobility management (such as cell reselection).
  • the first indication information may be included in SIB19.
  • the first indication information may also be included in other SIBs, such as SIB9, etc., and the embodiments of the present application do not specifically limit this.
  • the terminal device can obtain the first indication information contained in the SIB by decoding the physical downlink control channel (physical downlink shared channel, PDSCH) of the physical downlink shared channel (physical downlink shared channel, PDSCH) that schedules the SIB.
  • the physical downlink control channel physical downlink shared channel, PDSCH
  • PDSCH physical downlink shared channel
  • the first indication information may also be included in proprietary signaling.
  • the proprietary signaling may be RRC signaling, that is, the indication information may be carried by an RRC setup (RRC set up) message, or carried by an RRC resume (RRC resume) message, or carried by an RRC reconfiguration (RRC reconfiguration) message.
  • RRC setup RRC set up
  • RRC resume RRC resume
  • RRC reconfiguration RRC reconfiguration
  • a communication method is provided, which can be executed by a terminal device.
  • the terminal device here can refer to the terminal device itself, or a processor, module, chip, or chip system that implements the method in the terminal device.
  • the following is an example of the method being executed by a terminal device.
  • the method includes: obtaining first indication information, determining target time information according to the location information of the terminal device, the first indication information, and the speed information of the NTN device, and performing neighboring area measurement according to the target time information.
  • the first indication information is used to indicate the cell boundary and the time information corresponding to the cell boundary.
  • the time information is used to indicate the time when the NTN device stops covering the cell.
  • the target time information is used to indicate the time when the NTN device stops covering the terminal device.
  • the terminal device can obtain the first indication information, and determine the actual time when the NTN device stops covering the terminal device based on the first indication information, the location information of the terminal device, and the speed information of the NTN device, and then the terminal device performs neighbor cell measurement according to the actual time, it can avoid starting the neighbor cell measurement at the wrong time, for example, it can avoid delaying the triggering of the neighbor cell measurement, reducing the impact on the continuity of communication, and for example, it can avoid triggering the neighbor cell measurement in advance, thereby avoiding the terminal device from triggering the neighbor cell measurement too early or frequently, thereby reducing power consumption.
  • a communication method is provided, which can be executed by a non-terrestrial network NTN device.
  • the NTN device here can refer to the NTN device itself, or a processor, module, chip, or chip system in the NTN device that implements the method.
  • the following is an example of the method being executed by the NTN device.
  • the method includes: obtaining first indication information and sending the first indication information.
  • the first indication information is used to indicate a cell boundary and time information corresponding to the cell boundary.
  • the time information is used to indicate the time when the NTN device stops covering the cell.
  • the NTN device can obtain the first indication information and send the first indication information to the terminal device within the cell covered by it, the terminal device can determine the actual time when the NTN device stops covering the terminal device based on the first indication information, the location information of the terminal device, and the speed information of the NTN device, and then the terminal device performs neighboring cell measurement according to the actual time, which can avoid starting the neighboring cell measurement at the wrong time, for example, it can avoid delaying the triggering of the neighboring cell measurement, reducing the impact on communication continuity, and for example, it can avoid triggering the neighboring cell measurement in advance, thereby avoiding the terminal device from triggering the neighboring cell measurement too early or frequently, thereby reducing power consumption.
  • a communication device for implementing the above-mentioned various methods.
  • the communication device may be a terminal device in any of the above aspects or any of its implementations, or a device including the above terminal device, or a device included in the above terminal device, such as a chip; or the communication device may be an NTN device in any of the above aspects or any of its implementations, or a device including the above NTN device, or a device included in the above NTN device, such as a chip.
  • the communication device includes a module, unit, or means corresponding to the implementation of the above method, and the module, unit, or means may be implemented by hardware, software, or by hardware executing the corresponding software implementation.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device may include a processing module and a transceiver module.
  • the transceiver module which may also be referred to as a transceiver unit, is used to implement the sending and/or receiving functions in any of the above aspects and any possible implementations thereof.
  • the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the processing module may be used to implement any of the above aspects and any possible implementations thereof. The processing functions in possible implementations are described.
  • the transceiver module includes a sending module and a receiving module, which are respectively used to implement the sending and receiving functions in any of the above aspects and any possible implementation methods thereof.
  • a communication device comprising: at least one processor; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any of the above aspects.
  • the communication device further includes the memory.
  • the memory is coupled to the processor, the memory may be integrated with the processor, or the memory may be independent of the processor.
  • the processor is used to execute a computer program or instruction stored in the memory.
  • the memory is independent of the communication device.
  • the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.
  • the communication device may be a terminal device in any of the above aspects or any of its implementations, or a device including the above terminal device, or a device included in the above terminal device, such as a chip; or, the communication device may be an NTN device in any of the above aspects or any of its implementations, or a device including the above NTN device, or a device included in the above NTN device, such as a chip.
  • a computer-readable storage medium in which a computer program or instruction is stored.
  • the communication device can execute the method described in any one of the above aspects or any one of its implementation methods.
  • a computer program product comprising instructions, which, when executed on a communication device, enables the communication device to execute the method described in any one of the above aspects or any one of its implementations.
  • a communication device for example, the communication device may be a chip or a chip system
  • the communication device includes a processor for implementing the functions involved in any of the above aspects or any of its implementation methods.
  • the communication device includes a memory for storing necessary program instructions and data.
  • the device when it is a chip system, it can be composed of a chip or include a chip and other discrete devices.
  • the communication device provided in any one of the fifth to ninth aspects is a chip
  • the above-mentioned sending action/function can be understood as output
  • the above-mentioned receiving action/function can be understood as input.
  • the technical effects brought about by any design method in the fifth to ninth aspects can refer to the technical effects brought about by different design methods in any of the above aspects, and will not be repeated here.
  • a communication system comprising: a terminal device according to any one of the above aspects or any one of its implementations, and an NTN device according to any one of the above aspects or any one of its implementations.
  • FIG1 is a schematic diagram of a network architecture of a non-terrestrial network NTN provided in an embodiment of the present application
  • FIG2 is a schematic diagram of a centralized unit CU and a distributed unit DU separation architecture provided in an embodiment of the present application;
  • FIG3 is a schematic diagram of an NTN-based access network RAN architecture 1 provided in an embodiment of the present application.
  • FIG4 is a second schematic diagram of an NTN-based RAN architecture provided in an embodiment of the present application.
  • FIG5 is a third schematic diagram of an NTN-based RAN architecture provided in an embodiment of the present application.
  • FIG6 is a fourth schematic diagram of an NTN-based RAN architecture provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of a ground stationary cell covered by a satellite provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of a ground mobile cell covered by satellites provided in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a terminal device starting measurement based on time provided in an embodiment of the present application.
  • FIG10 is a flow chart of a communication method provided in an embodiment of the present application.
  • FIG11 is a schematic diagram of a satellite coverage area provided in an embodiment of the present application.
  • FIG12 is a schematic diagram of a cell reference point and a cell reference line provided in an embodiment of the present application.
  • FIG13 is a schematic diagram of a cell reference line reduction indication overhead provided in an embodiment of the present application.
  • FIG14 is a second schematic diagram of a satellite coverage area provided in an embodiment of the present application.
  • FIG15 is a schematic diagram of the relationship between the position of a terminal device and a cell reference point provided in an embodiment of the present application.
  • FIG16 is a schematic diagram of the relationship between the position of a terminal device and a cell reference line provided in an embodiment of the present application.
  • FIG17 is a second flow chart of a communication method provided in an embodiment of the present application.
  • FIG18 is a schematic diagram of a communication device structure provided in an embodiment of the present application.
  • FIG. 19 is a second schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • NTN non-terrestrial networks
  • TN new radio
  • 5G fifth generation
  • IoT Internet of Things
  • NR systems, IoT systems, and future next-generation communication systems can introduce NTN to provide seamless coverage services for terminal devices.
  • 6G sixth generation
  • NTN can deploy part or all of the functions of the base station on NTN devices (such as ships, high-altitude platforms, drones or satellites) to provide communication coverage for terminal devices to improve the reliability of the communication system.
  • NTN devices such as ships, high-altitude platforms, drones or satellites
  • the following description uses a satellite as an example of an NTN device. It should not be understood that the non-terrestrial network device in the embodiments of the present application is limited to a satellite. This is a unified description and will not be repeated below.
  • Figure 1 is a schematic diagram of a network architecture of an NTN provided in an embodiment of the present application.
  • the network architecture may include: a terminal device, an access network (radio access network, RAN), and a core network (core network, CN), which are introduced below respectively.
  • RAN radio access network
  • CN core network
  • the terminal device may be a device for implementing a wireless communication function, such as a terminal or a chip that can be used in a terminal, etc.
  • the terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a terminal agent or a terminal device, etc. in a 5G network or a future evolved public land mobile network (PLMN).
  • UE user equipment
  • PLMN public land mobile network
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a VR terminal device, an AR terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.
  • the terminal device may be mobile or fixed.
  • RAN exists between the terminal device and CN and provides a communication connection between the two.
  • RAN equipment is an entity used to send signals, or receive signals, or both send signals and receive signals.
  • the RAN device may also be referred to as an access node, a RAN entity, a RAN node, or a device having a base station processing function, etc.
  • the RAN device may include an NTN device (or NTN-RAN device) and a TN-RAN device, and the NTN-RAN device may be a device that provides coverage for a terminal device by deploying a base station or part of the base station function on a non-terrestrial device (e.g., a satellite, a high-altitude platform, or a drone, etc.).
  • a non-terrestrial device e.g., a satellite, a high-altitude platform, or a drone, etc.
  • the TN-RAN device may include a base station in an NR system (e.g., a next-generation node B (gNodeB, gNB)), or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB, a transmission point (transmission and reception point, TRP or transmission point, TP) or a transmission measurement function (transmission measurement function, TMF), such as a baseband unit (building base band unit, BBU), or a centralized unit (centralized unit, CU) or a distributed unit (distributed unit, DU), an RSU with a base station function, or a wired access gateway, or a CN network element of 5G.
  • gNodeB next-generation node B
  • gNodeB next-generation node B
  • gNodeB next-generation node B
  • gNodeB next-generation node B
  • gNodeB next-generation no
  • TN-RAN equipment may also include access points (APs) in wireless fidelity (Wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, wearable devices, vehicle-mounted devices, etc.
  • RAN equipment may also include: next-generation mobile communication systems, such as 6G Access network equipment, such as a 6G base station, or in the next generation mobile communication system, the network equipment may also have other naming methods, which are all covered within the protection scope of the embodiments of the present application, and the present application does not impose any limitations on this.
  • the RAN device may include a CU, a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU).
  • the RAN device may also include an active antenna unit (AAU).
  • the CU implements some functions of the network device, and the DU implements some functions of the network device.
  • the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and/or packet data convergence protocol (PDCP) layers.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • the AAU implements some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, therefore, under this architecture, high-level signaling, such as RRC signaling, can also be considered to be sent by the DU, or by the DU and the AAU.
  • the RAN device can be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into a network device in the RAN, and the CU can also be divided into a network device in the CN, which is not limited in the embodiments of the present application.
  • the centralized unit CU can also be divided into a control plane (CU-CP) and a user plane (CU-UP).
  • the CU-CP is responsible for the control plane function, mainly including RRC and the PDCP corresponding to the control plane (i.e., PDCP-C).
  • PDCP-C is mainly responsible for encryption and decryption, integrity protection, data transmission, etc. of the control plane data.
  • the CU-UP is responsible for the user plane function, mainly including the service data adaptation protocol (SDAP) layer and the PDCP corresponding to the user plane (i.e., PDCP-U).
  • SDAP is mainly responsible for processing the data of the core network and mapping the flow to the bearer.
  • PDCP-U is mainly responsible for encryption and decryption, integrity protection, header compression, sequence number maintenance, data transmission, etc. of the data plane.
  • the CU-CP and CU-UP are connected through the E1 interface.
  • the CU-CP represents the RAN device and is connected to the core network through the NG interface.
  • the control plane, i.e., F1-C is connected to the DU through the F1 interface.
  • the CU-UP is connected to the DU through the F1 interface user plane, i.e., F1-U.
  • F1-U user plane
  • PDCP-C is also in CU-UP.
  • CU or CU-CP and CU-UP
  • DU or RU may also have different names, but those skilled in the art can understand their meanings.
  • CU may also be called an open CU (open CU, O-CU)
  • DU may also be called an open DU (open DU, O-DU)
  • CU-CP may also be called an open CU-CP (open CU-CP, O-CU-CP)
  • CU-UP may also be called an open CU-UP (open CU-UP, O-CU-UP)
  • RU may also be called an open RU (open RU, O-RU).
  • any unit of CU (or CU-CP, CU-UP), DU and RU in the embodiments of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.
  • CN is mainly responsible for maintaining the contract data of the mobile network and providing session management, mobility management, policy management, security authentication and other functions for terminal devices.
  • 3GPP 3rd Generation Partnership Project
  • NTN can be classified according to the working mode of the satellite, such as transparent mode architecture and regenerative mode architecture.
  • the role of the satellite in the transparent mode architecture is to perform radio frequency filtering, frequency conversion and amplification, that is, in the transparent satellite architecture, the satellite is mainly used as a layer 1 (layer 1, L1) relay device to regenerate the physical layer signal (i.e., radio frequency filtering, frequency conversion and amplification processing), without other higher protocol layers.
  • the regenerative mode can refer to the satellite as a base station, with some or all of the data processing capabilities of the base station.
  • NTN-based RAN architecture Several examples of NTN-based RAN architecture are described below with reference to the accompanying drawings.
  • FIG3 is a schematic diagram of an NTN-based RAN architecture provided in an embodiment of the present application.
  • the RAN architecture (or referred to as the next-generation RAN (NG-RAN)) is a transparent satellite architecture (architecture with transparent satellite), including: a remote radio unit (RRU) and a base station.
  • the RRU may include a satellite and an NTN gateway (or a ground network element).
  • the working mode of the satellite may be a transparent mode, that is, the satellite acts as a layer 1 relay between the terminal device and the base station.
  • the satellite is used to regenerate the PHY layer signal, that is, the satellite may not have It is understood that the transmission link between the satellite and the terminal device can be called a service link (SL).
  • SL service link
  • the transmission link between the satellite and the NTN gateway can be called a feeder link (FL).
  • the NTN gateway can be deployed together with the base station or separately, which is not specifically limited in this application.
  • the feeder link is understood as the transmission link between the satellite and the base station.
  • the FL may include the transmission link between the satellite and the NTN gateway, and the transmission link between the NTN network element and the base station.
  • the terminal device can access the base station through the satellite, and then access the core network (CN) through the base station, such as the fifth generation core network (5G CN).
  • 5G CN can communicate with the data network (DN).
  • FIG4 is a schematic diagram of another NTN-based RAN architecture provided in an embodiment of the present application.
  • the RAN architecture is a regenerative satellite architecture without an inter-satellite link (ISL).
  • ISL can refer to a transmission link between satellites.
  • ISL can be a wireless interface or an optical interface.
  • the specific ISL can be defined by 3GPP, for example, using an Xn interface, which is not specifically limited.
  • the interface between the satellite and the NTN gateway can be a satellite radio interface (SRI).
  • SRI satellite radio interface
  • FIG5 is a schematic diagram of another NTN-based RAN architecture provided by an embodiment of the present application.
  • the RAN architecture is a regenerative satellite architecture with ISL, which is different from the architecture shown in FIG4 in that: the architecture in FIG5 has ISL, that is, satellite #1 and satellite #2 can be transmitted through ISL.
  • FIG6 is a schematic diagram of another NTN-based RAN architecture provided by an embodiment of the present application.
  • the difference between the RAN architecture and the transparent satellite architecture shown in FIG3 is that the satellite in FIG6 has some processing functions of the base station, such as the DU function of the RAN device, the satellite can serve as the DU of the RAN device, and the base station can serve as the CU of the RAN device.
  • satellites can also be replaced by other NTN devices, such as ships, high-altitude platforms, or drones.
  • Satellites can be divided into two categories according to their orbital altitude: high-orbit satellites and medium- and low-orbit satellites. Among them, for medium- and low-orbit satellites, the service coverage areas (i.e., satellite cells) provided by medium- and low-orbit satellites can be divided into two types: quasi-earth-fixed cells and earth-moving cells.
  • the moving satellite forms one or more cells by adjusting its beam, and the position of the one or more cells on the ground is stationary for a certain period of time. It can be understood that when the satellite cannot continue to cover the ground stationary cell due to movement, the next satellite can cover the cell to provide service.
  • the satellite does not dynamically adjust the beam direction, and the cell covered by the satellite's beam moves with the movement of the satellite.
  • cell #1 can be served by satellite #1 at time t0, and at time t1 (time t0 is less than time t1), satellite #1 stops covering cell #1. Among them, cell #1 is stationary. Of course, at time t1 or after time t1, other satellites can continue to provide services for cell #1. For example, satellite #2 can provide services for cell #1 at time t1, and then cell #1 is changed from being served by satellite #1 to being served by satellite #2, that is, the terminal device switches from satellite #1 to satellite #2. It should be understood that the change of satellite is a switch for the terminal device, that is, the source cell (source cell) covered by satellite #1 switches to the target cell (target cell) covered by satellite #2.
  • cell #2 is served by satellite #2, and cell #2 is located in physical area #1 at time t0.
  • cell #2 is located in physical area #2 at time t1, that is, from time t0 to time t1, cell #2 is constantly moving with the movement of satellite #2.
  • the moving speed of satellite #2 is greater than the moving speed of the terminal device, and then at time t1, the terminal device moves out of the coverage of cell #2, so the terminal device switches from cell #2 to the target cell.
  • the terminal device requires mobility management to ensure that the terminal device is in the optimal communication state.
  • Mobility management may include cell reselection. For example, in idle state, the terminal device monitors the signal quality of the current cell and neighboring cells, and selects a cell with better signal quality and meets the conditions for reselection.
  • the cell to be retained needs to meet certain conditions, for example, the signal quality of the cell monitored by the terminal device is greater than or equal to a predetermined threshold, which can be indicated to the terminal device by the network or pre-configured by the terminal device. It can be understood that if the terminal device has established a connection with the cell, the cell can be called a serving cell.
  • 3GPP release (Rel) 17 provides a measurement trigger mechanism based on time-based measurement initiation for ground stationary cells, as follows:
  • the satellite can broadcast the remaining service time of the serving cell (e.g. t-Service in the system information block (SIB) 19), and the terminal device should perform neighbor measurements before the remaining service time of the serving cell arrives. In other words, the terminal device should perform neighbor measurements before the satellite stops serving to avoid communication interruption.
  • SIB system information block
  • the above-mentioned neighboring cell measurement can be one or more of the following measurements: intra-frequency measurement, inter-frequency measurement, or inter-radio access technology measurement.
  • the above measurement triggering mechanism based on starting measurement at a time may cause the terminal device to start neighboring cell measurement at a wrong time.
  • FIG9 is a schematic diagram of a terminal device based on time-based start-up measurement provided by an embodiment of the present application.
  • terminal device #1 and terminal device #2 reside in cell #1 respectively, terminal device #1 is located at the edge of cell #1, and terminal device #2 is located at the center of cell #1.
  • Cell #1 is served by satellite #1, and satellite #1 moves in the direction from terminal device #1 to terminal device #2.
  • cell #1 since cell #1 is a ground mobile cell, cell #1 moves in the direction from terminal device #1 to terminal device #2 as satellite #1 moves, so cell #1 may first stop covering terminal device #1, and then stop covering terminal device #2, that is, the actual remaining service time of terminal device #1 is less than the actual remaining service time of terminal device #2.
  • terminal devices located at different positions in the same cell have different remaining service times.
  • its actual remaining service time is less than the remaining service time indicated by SIB19, which will cause terminal device #1 to delay measurement. That is, when terminal device #1 starts neighboring area measurement, it is no longer within the coverage of cell #1.
  • the connection between terminal device #1 and the network has been interrupted, and terminal device #1 needs to re-access the network.
  • an embodiment of the present application provides a communication method, which can prevent a terminal device from starting a neighbor cell measurement at an incorrect time.
  • the numbering can be started from 1 or from 0, or from any parameter.
  • pre-defined Pre-defined
  • pre-configured or pre-configured
  • program agreement can be used interchangeably, and pre-definition can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, a terminal device or a network device).
  • a device for example, a terminal device or a network device.
  • the embodiments of this application do not limit the specific implementation method.
  • "saving” can mean saving in one or more memories.
  • the “protocol” involved in the embodiments of the present application may refer to a standard protocol in the communication field, such as the long term evolution (LTE) protocol, the NR protocol, and related protocols used in future communication systems (such as 6G communication systems), which is not limited in the embodiments of the present application.
  • LTE long term evolution
  • NR NR-term evolution
  • 6G communication systems 6G communication systems
  • sending information to ... (terminal device) can be understood as the destination of the information being the terminal device, and can include directly or indirectly sending information to the terminal device.
  • receiving information from ... (NTN device) or “receiving information from ... (NTN device)” can be understood as the source of the information being the NTN device, and can include directly or indirectly receiving information from the NTN device.
  • the information may be processed as necessary between the source and destination of the information transmission, such as format changes, but the destination can understand the valid information from the source. Similar expressions in the present application can be understood similarly and will not be repeated here.
  • the embodiments of the present application are applicable to various communication systems, including: satellite communication systems, high altitude platform station (HAPS) communication, unmanned aerial vehicle (UAV) and other NTN systems, for example, integrated communication and navigation (IcaN) systems, global navigation satellite systems (GNSS) and ultra-dense low-orbit satellite communication systems, etc.
  • the NTN system can be the NTN system introduced in the aforementioned "non-terrestrial network”
  • the RAN architecture in the NTN system can be, for example, any of the RAN architectures shown in Figures 3 to 6, or a RAN architecture that will evolve in the future, without limitation.
  • NTN network access network
  • LTE long term evolution
  • V2X vehicle to everything
  • D2D device-to-device
  • M2M machine to machine
  • the other communication system can also be O-RAN or cloud radio access network (cloud RAN, CRAN), without limitation.
  • the embodiment of the present application provides a communication method, and the execution subject of the method may be a terminal device.
  • the terminal device may be the terminal device in FIG. 1 above, or a module or unit of the terminal device (such as a chip, chip system, chip circuit, or circuit of the terminal device).
  • the terminal device obtains first indication information, the first indication information is used to indicate the position and time information corresponding to each of at least two cell reference objects, and the time information is used to indicate the time when the NTN device stops covering the cell; the terminal device determines the time information corresponding to the target cell reference object according to the position information of the terminal device and the first indication information, and the target cell reference object is a cell reference object determined from at least two cell reference objects according to the distance between the terminal device and each of the at least two cell reference objects; the terminal device performs neighboring cell measurement according to the time information corresponding to the target cell reference object.
  • the terminal device can obtain the first indication information, and determine the time information corresponding to the target cell reference object from the time information corresponding to multiple cell reference objects according to the first indication information and the position information of the terminal device, and then obtain the time when the NTN device corresponding to the position of the terminal device stops covering the cell, thereby avoiding starting the neighboring cell measurement at the wrong time. For example, delaying the triggering of the neighboring cell measurement can be avoided, reducing the impact on communication continuity; for another example, early triggering of the neighboring cell measurement can be avoided, thereby avoiding the terminal device from triggering the neighboring cell measurement too early or frequently, thereby reducing power consumption.
  • the terminal device can be the terminal device in the aforementioned FIG. 1, or a module or unit of the terminal device (such as a chip, a chip system, a chip circuit, or a circuit of the terminal device, etc.).
  • the NTN device can be the NTN device introduced in the aforementioned FIG. 1, or a module or unit of the NTN device (such as a chip, a chip system, a chip circuit, or a circuit of the NTN device, etc.).
  • the NTN device can be a satellite, or a module or unit of a satellite.
  • the NTN device can provide services for the terminal device, such as the terminal device can be located in a cell provided by the NTN device, and the cell can be a terrestrial mobile cell, which is not specifically limited in the embodiment of the present application.
  • the following takes the interaction between the terminal device and the NTN device as an example, and describes in detail the communication method process shown in FIG. 10 in combination with the RAN architecture of FIG. 1 to FIG. 6 .
  • FIG10 is a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG10 , the method includes the following steps:
  • the NTN device obtains first indication information.
  • the first indication information is used to indicate the location and time information corresponding to each cell reference object in at least two cell reference objects.
  • the time information is used to indicate the time when the NTN device stops covering the cell.
  • the NTN device sends first indication information to the terminal device.
  • the terminal device obtains the first indication information from the NTN device.
  • the terminal device determines time information corresponding to a target cell reference object according to the location information of the terminal device and the first indication information, wherein the target cell reference object is a cell reference object determined from at least two cell reference objects according to a distance between the terminal device and each of the at least two cell reference objects.
  • the terminal device performs neighboring cell measurement according to the time information corresponding to the target cell reference object.
  • the NTN device obtains the first indication information (i.e., step S1001), including: the NTN device obtains the first indication information from the ground base station.
  • the working mode of the NTN device may be, for example, a transparent mode.
  • the ground base station may be, for example, a TN-RAN device (e.g., the base station in FIG. 3 ).
  • the first indication information can be generated by the ground base station.
  • the NTN device obtains the first indication information from the ground base station and forwards the first indication information to the terminal device. In this way, the NTN device only needs to perform simple frequency filtering, forwarding, or amplification processing on the signal, thereby reducing the deployment complexity of the NTN device.
  • the NTN device acquires the first indication information (ie, step S1001), including: the NTN device generates the first indication information.
  • the working mode of the NTN device may be, for example, a regeneration mode.
  • the NTN device may be, for example, a satellite in FIG. 4 or FIG. 5 .
  • the NTN device may generate the first indication information according to its own location information, speed information, and beam coverage capability information, and send the first indication information to the terminal devices in the cell covered by it.
  • the first indication information may be generated by the NTN device and sent to the terminal device, which may reduce the transmission delay of the first indication information compared to the NTN device forwarding the first indication information from the base station.
  • the cell reference object is introduced below.
  • the cell reference object may refer to a reference position within the ground area covered by the cell.
  • the ground area covered by the cell may refer to the beam footprint of the beam of the NTN device projected onto the ground at a specific time (or referred to as the reference time (epoch time)).
  • the reference position may be represented (or embodied, or represented) by a geometric form such as a point, a line, or a closed plane or a curved surface.
  • the line may be a straight line or a curve
  • the closed plane may be a circular plane, a triangular plane, a rectangular plane, or other irregular shapes, which is not specifically limited in the embodiments of the present application.
  • the cell reference object can be a cell reference point, a cell reference line, or a cell reference plane, and the embodiment of the present application does not specifically limit this.
  • the reference point on the cell reference line may refer to a cell reference point, that is, the cell reference line may be composed of multiple cell reference points.
  • the cell reference plane may be composed of a closed cell reference line and multiple cell reference points within the cell reference line.
  • the position corresponding to the cell reference point (or called the cell reference position) is different from the cell reference position (cell reference location) of the ground stationary cell.
  • the cell reference position of the ground stationary cell refers to the center position of the above-mentioned beam coverage area, while in the embodiment of the present application, the position corresponding to the cell reference point can be any position within the above-mentioned beam coverage area, such as the edge position within the beam coverage area, or the center position, or any position between the center position and the edge position.
  • the position corresponding to the cell reference point can be represented (or indicated) by longitude and latitude.
  • the position corresponding to the cell reference point can also be indicated by three dimensions of longitude, latitude, and altitude. It can be understood that the position corresponding to the cell reference point can also be indicated by coordinates in other coordinate systems, such as the earth centered earth fixed (ECEF) coordinate system or the earth centered inertial (ECI) coordinate system, which is not limited in the embodiments of the present application.
  • ECEF earth centered earth fixed
  • ECI earth centered inertial
  • the position corresponding to the cell reference point can also be indicated by a wave position, which is not specifically limited in the embodiments of the present application. It can be understood that, compared with indicating the cell reference position by longitude and latitude, indicating the cell reference position by using a wave position index can reduce the indication overhead, and the accuracy of the indicated cell reference position is the same.
  • the specific reference position format includes: latitude sign field (latitudeSign), latitude field (degreeLatitude), and longitude field (degreeLongitude).
  • latitude sign field can be used to indicate north or south, requiring 1 bit of overhead; the latitude field value range is (0 to 8388607), requiring 23 bits of overhead; the longitude field value range is (-8388608 to 8388607), requiring 24 bits of overhead, that is, the total indication overhead is 48 bits.
  • its accuracy is 10 ⁇ (-5) degrees, and there is a problem that its accuracy is different in different regions of the earth. For example, for the equatorial region, its accuracy is 0.4 kilometers (km).
  • the number of wave positions is 4067900000, and the number of bits required is 32, that is, the indication overhead is 32 bits, and the position accuracy indicated by the wave position is the same for different locations on the earth.
  • the cell in the cell reference object may refer to an NTN cell
  • the NTN cell may be a cell where the terminal device resides, or a service cell of the terminal device, without limitation.
  • the cell reference object, the cell reference point, the cell reference line, or the cell reference plane are merely exemplary names and may also be represented by other names, such as a cell reference location moving (or cell reference location moving), without specific limitation.
  • the time information is used to indicate the time when the NTN device stops covering the cell, which can be replaced by: the time information is used to indicate the time when the NTN cell stops serving the area currently covered by it.
  • the NTN cell can be, for example, a terrestrial mobile cell.
  • the time information may include the remaining time when the NTN device stops covering the cell, and the remaining time may be, for example, the remaining service time.
  • the time information may also include the time when the NTN device stops covering the cell, for example, the time information may be the system frame number (SFN) SFN#k and subframe #s, that is, the NTN device stops covering the Sth subframe in the kth SFN or the boundary of the subframe (for example, the starting boundary or the ending boundary); or, the time information may also be the standard time, which is not specifically limited in the embodiments of the present application.
  • SFN system frame number
  • subframe #s that is, the NTN device stops covering the Sth subframe in the kth SFN or the boundary of the subframe (for example, the starting boundary or the ending boundary
  • the time information may also be the standard time, which is not specifically limited in the embodiments of the present application.
  • the standard time can be coordinated universal time (UTC), global positioning system (GPS) time, long range navigator (LORAN) time, or international atomic time (TAI), etc., and the embodiments of the present application do not specifically limit this.
  • the standard time can also be called absolute time, which is objective and has nothing to do with any special reference system.
  • the terminal device and the NTN device have the same understanding of the same absolute time.
  • the first indication information may indicate time information by a multiple of 10 milliseconds (ms).
  • the time corresponding to the time information may be a multiple of 10 ms from the first moment when the NTN device stops covering the cell, and the first moment may be January 1, 1900 in the Greenwich calendar.
  • the time indicated by the first indication information supports until 2073, and its value range is (0...549755813887), that is, the indication overhead required for the first indication information to indicate the time information is 40 bits.
  • the first indication information may indicate time information through at least two time granularities (or referred to as time units).
  • the at least two time granularities may include any two of the following: hour (unit: h), minute (unit: min), second (unit: s), or millisecond.
  • the first indication information may support indicating time of any time period (for example, more than 2073 years), and may reduce indication overhead.
  • the NTN device can use several time granularities such as hours, minutes, seconds, and milliseconds. Indicates the UTC time.
  • 0 to 24 hours can be quantized with 5 bits
  • 0 to 60 minutes can be quantized with 6 bits
  • 0 to 60 seconds can be quantized with 6 bits
  • 0 to 1000 milliseconds can be quantized with a quantization granularity of 10 milliseconds, that is, the number of quantization bits is 7 bits, so the indication overhead required for the first indication information to indicate the time information can be reduced from the aforementioned 40 bits to 24 bits.
  • the difference between the time information corresponding to the cell reference object and the remaining service time (i.e., t-service) in SIB19 is that the remaining service time in SIB19 is for the entire cell, that is, the remaining service time between terminal devices located at different positions in the cell is the same, and the time information corresponding to different cell reference objects in the embodiment of the present application may be different.
  • the positions corresponding to different cell reference objects may be different, and the time information corresponding to cell reference objects at different positions may be the same or different.
  • the time information corresponding to the cell reference object is only an exemplary name and can also be represented by other names, such as mobile service time, or remaining mobile service time (or called t-service moving), without specific limitation.
  • each cell reference object is a cell reference point
  • the target cell reference object is a target cell reference point.
  • each cell reference object is a cell reference line
  • the time information corresponding to multiple reference points on the cell reference line is the same
  • the target cell reference object is the target cell reference line.
  • the cell reference object can be a cell reference point or a cell reference line, so that the network side can flexibly indicate the cell reference point or the cell reference line according to the coverage strategy of the NTN device.
  • the location information corresponding to more cell reference points located on the cell reference line can be indicated by indicating some cell reference points, thereby reducing the indication overhead.
  • the time information corresponding to the multiple cell reference points may be the same.
  • the time information corresponding to the two cell reference points is different.
  • the time information corresponding to cell reference lines at different locations is different.
  • the cell reference line is exemplarily described below with reference to FIG. 11 and FIG. 12 .
  • the schematic diagram of the cell coverage is shown in FIG11.
  • the cell covered by each satellite is relatively regular and can be presented as a rectangle, and the long side of the covered cell is parallel to the direction of satellite movement.
  • a vertical line is drawn along the direction of satellite movement, which can be divided into N lines, namely, lines (A1, B1), lines (A2, B2), lines (A3, B3), ..., lines (Ak, Bk), ..., lines (AN, BN) in FIG12, and each of the N lines includes S cell reference points, 1 ⁇ k ⁇ N, k and N are positive integers, and S is a positive integer greater than 2.
  • the satellite stops covering the positions corresponding to the N lines in turn, and the S cell reference points on each line are stopped from covering at the same time, that is, the corresponding time information between the S cell reference points on each line is the same, that is, each line is a cell reference line.
  • each cell reference line includes at least S cell reference points, and a total of S ⁇ N cell reference points
  • the first indication information should indicate the position and time information corresponding to the S ⁇ N cell reference points. Since the position corresponding to the cell reference line can be determined by any two cell reference points on the cell reference line, or any one cell reference point and slope on the cell reference line, as shown in FIG. 13, the position corresponding to the S cell reference points on the same cell reference line can be replaced by the position corresponding to any two cell reference points among the S cell reference points, or the position and slope corresponding to any one cell reference point among the S cell reference points.
  • the first indication information indicates the position and time information corresponding to 2N cell reference points at most, which can at least save the indication overhead required for the position information and time information corresponding to the cell reference points (i.e., (S-2) ⁇ N cell reference points) in the dotted box in FIG. 13.
  • the coverage strategy shown in FIG. 11 is only exemplary, and the satellite may also adopt other coverage strategies, and other coverage strategies may also be applicable to the cell reference lines.
  • the satellite may also adopt other coverage strategies, and other coverage strategies may also be applicable to the cell reference lines.
  • an inscribed rectangle of the circle as shown in FIG. 14 is drawn along the direction of movement of the satellite, and multiple cell reference lines may be divided in the inscribed rectangle.
  • rectangle #1 and rectangle #2 in FIG14 different rectangular areas can also be divided, such as rectangle #1 and rectangle #2 in FIG14 , and multiple cell reference lines can also be divided within rectangle #1. Similarly, multiple cell reference lines can also be divided within rectangle #2.
  • the cell reference line can also be applied to coverage areas of other shapes, such as hexagons, ellipses, or other shapes, and the embodiments of the present application do not specifically limit this.
  • the cell reference plane may be a rectangle, a circle, or other regular or irregular shapes.
  • the time information corresponding to the cell reference points at different positions in the cell reference plane may be the same, or the difference between the time information corresponding to the cell reference points at different positions in the cell reference plane is less than the first threshold.
  • the first threshold may be 0.2ms, 0.5ms, 1ms, or a larger time value, which is not specifically limited in the embodiments of the present application.
  • cell reference objects are cell reference points, or cell reference lines, or cell reference planes, which are only examples, and the cell reference objects may also be in other forms, which are not specifically limited in the embodiments of the present application.
  • the at least two cell reference objects in step S1001 may be N cell reference points, the N cell reference points correspond to N positions and N time information, the first indication information includes an information element (IE) group corresponding to each of the N cell reference points, the information element group includes two information elements: a cell reference position #k (or expressed as referenceLocationMoving_k) and time information #k (or expressed as t-ServiceMoving_k), the cell reference position #k indicates the position corresponding to the k-th cell reference point, the time information #k indicates the time information corresponding to the first k cell reference points, 1 ⁇ k ⁇ N, k and N are positive integers.
  • the cell reference position and time information in the same information element group correspond to the same cell reference point.
  • N information element groups can be expressed as: ⁇ (cell reference position #1, time information #1), ..., (cell reference position #2, time information #2), ..., (cell reference position #N, time information #N) ⁇ .
  • the cell reference positions and time information located in the same row correspond to the same cell reference point, that is, the order of cell reference positions #1 to #N in the cell reference position list and the order of time information #1 to #N in the time information list can indicate that the cell reference positions and time information in the same order correspond to the same cell reference point.
  • the cell reference line can be indicated by two cell reference points, or the cell reference line can be indicated by a cell reference point and a slope.
  • the following specifically introduces the implementation method of indicating the cell reference line with the first indication information.
  • the first indication information is used to indicate the location and time information corresponding to each cell reference object in the at least two cell reference objects, including: the first indication information is used to indicate the following multiple items:
  • the terminal device can determine the position corresponding to each cell reference line, and the first indication information only needs to indicate the time information corresponding to each cell reference line, thereby reducing the indication overhead.
  • the reference point position set includes positions corresponding to at least two cell reference points.
  • the reference point position set may include positions corresponding to two cell reference points, so that the terminal device can determine the position corresponding to the cell reference line based on the positions corresponding to the two cell reference points.
  • the reference point position set may also include positions corresponding to three cell reference points, positions corresponding to four cell reference points, or positions corresponding to more cell reference points, so that the terminal device can determine the position corresponding to the cell reference line based on the positions corresponding to any two cell reference points among the above-mentioned multiple cell reference points, or the positions corresponding to more cell reference points than two cell reference points.
  • the at least two cell reference points may include a starting cell reference point and an ending cell reference point.
  • the starting cell reference point and the ending cell reference point can indicate the starting position and the ending position of the cell reference line, and then the terminal device can determine the valid position corresponding to the cell reference line.
  • an NTN cell can be divided into different areas, and the time when the satellite stops covering different areas may be different.
  • the terminal device can determine whether the area corresponding to the cell reference line is rectangle #1, rectangle #2, or an inscribed rectangle.
  • the at least two cell reference points mentioned above may also be other cell reference points except the starting cell reference point and the ending cell reference point, and no specific limitation is made to this.
  • the reference point position set corresponding to each cell reference line indicated by the first indication information may include two cell reference points.
  • the first indication information may indicate two cell reference points corresponding to N cell reference lines, namely, cell reference point A and cell reference point B.
  • the cell reference point A, the cell reference point B, and the time information in the same row in Table 3 correspond to the same cell reference line.
  • the above Table 3 can also be represented in the form of information element groups.
  • the first indication information can include N information element groups, and the N information element groups can be represented as: ⁇ (cell reference position A1, cell reference position B1, time information #1), ..., (cell reference position A2, cell reference position B2, time information #2), ..., (cell reference position AN, cell reference position BN, time information #N) ⁇ .
  • the terminal device can also determine the position corresponding to the cell reference line according to the position and slope corresponding to any one of the cell reference points in the reference point position set. It can be understood that whether the terminal device determines the position corresponding to the cell reference line according to the position and slope corresponding to any one of the cell reference points in the reference point position set, or determines the position corresponding to the cell reference line according to the positions corresponding to any two of the cell reference points in the reference point position set, depends on the actual implementation of the terminal device, and the embodiments of the present application do not specifically limit this.
  • the position corresponding to each cell reference line is a position determined according to a reference point position set and a slope on each cell reference line, and the slope corresponding to each cell reference line is a slope determined according to a moving direction of the NTN device; the method provided in FIG10 further includes:
  • the NTN device sends the indication information of the moving direction of the NTN device.
  • the terminal device obtains the indication information of the moving direction of the NTN device from the NTN device.
  • the indication information of the movement direction of the NTN device may be the ephemeris information of the NTN device, and the ephemeris information may include information such as the movement direction or movement speed of the NTN device. It can be understood that under some coverage strategies, such as the coverage strategy shown in FIG14 , the cell reference line and the movement direction of the NTN device are in a vertical relationship, so that the terminal device can determine the slope corresponding to each cell reference line according to the movement direction of the NTN device.
  • the terminal device may also obtain the indication information of the movement direction of the NTN device in other ways, for example, and this embodiment of the present application does not specifically limit this.
  • the first indication information is also used to indicate the slope corresponding to each cell reference line.
  • the terminal device may determine the cell reference line according to the slope indicated by the first indication information. It is understandable that in some scenarios, the cell reference line may not be perpendicular to the movement direction of the NTN device, or the slopes of different cell reference lines may be different. In these scenarios, the slope may be indicated by the first indication information so that the terminal device can determine the slope corresponding to the cell reference line, and then determine the position corresponding to the cell reference line, which can reduce the complexity of the terminal device in calculating the position corresponding to the cell reference line and reduce the power consumption of the terminal device.
  • the at least two cell reference objects include: a first cell reference object and a cell reference object group, the cell reference object group includes other cell reference objects except the first cell reference object in the at least two cell reference objects;
  • the first indication information is used to indicate the position and time information corresponding to each cell reference object in the at least two cell reference objects, including: the first indication information is used to indicate the following multiple items: the position corresponding to the first cell reference object;
  • the first indication information is used to indicate multiple items below:
  • the first cell reference object may be any reference object of at least two cell reference objects.
  • the position of the first cell reference object can be used as a reference to indicate the positions corresponding to other cell reference objects other than the first cell reference object by using a position offset relative to the first cell reference object (or a differential method); or, the time information corresponding to the first cell reference object can be used as a reference to indicate the time information corresponding to other cell reference objects other than the first cell reference object by using a differential method, thereby reducing the indication overhead.
  • the indication overhead of the location corresponding to the cell reference point is at least 32 bits, while the indication overhead of indicating the location offset is less than 32 bits.
  • the indication overhead of indicating the time offset is also less than the indication overhead of indicating the time information.
  • Example 1 using a differential method to indicate positions corresponding to other cell reference objects except the first cell reference object.
  • the following is an exemplary description using the cell reference objects as cell reference points and cell reference lines.
  • the first cell reference object is the cell reference point #1
  • the first indication information may indicate the position corresponding to the cell reference point #1, that is, the cell reference position #1.
  • the cell reference object group includes cell reference points #2 to #N
  • the first indication information indicates the position offset of the cell reference points #2 to #N relative to the cell reference position #1
  • the position offset 1_1 indicates the position offset of the position corresponding to the cell reference point #2 relative to the cell reference position #1
  • the position offset 1_N-1 indicates the position offset of the position corresponding to the cell reference point #N relative to the cell reference position #1.
  • the difference between the two is that the cell reference positions #2 ⁇ #N can be replaced by position offsets 1_1 ⁇ 1_N-1.
  • the cell reference point list in the above Table 4 is only listed for the convenience of understanding, and this column may not be indicated in actual indication.
  • the first indication information may include N information element groups, and the N information element groups may be expressed as: ⁇ (cell reference position #1, time information #1), ..., (position offset 1_1, time information #2), ..., (position offset 1_N-1, time information #N) ⁇ .
  • the information corresponding to the information element in the first indication information is the position information or the position offset information, it can be implicitly indicated which cell reference point is used as the first cell reference object.
  • the name of the first cell reference object is only an example and may also be other names.
  • the first cell reference object may be called a group header, and the cell reference points #2 to #N in the cell reference object group may be called group members.
  • the embodiments of the present application do not make any specific limitations on this.
  • the first cell reference object is cell reference line #1
  • the first indication information may indicate the position corresponding to cell reference line #1, namely, cell reference position A1 and cell reference position B1.
  • the cell reference object group includes cell reference lines #2 to #N
  • the first indication information indicates the position offset of cell reference lines #2 to #N relative to cell reference line #1
  • position offset 1_1 indicates the position offset of the position corresponding to cell reference line #2 relative to cell reference line #1
  • position offset 1_N-1 indicates the position offset of the position corresponding to cell reference line #N relative to cell reference position #1.
  • the position offsets 1_1 to 1_N-1 may be different.
  • the position offsets 1_1 to 1_N-1 may indicate the vertical distance between the cell reference lines #2 to #N and the cell reference line #1; when the cell reference lines #2 to #N are not parallel to the cell reference line #1, the position offsets 1_1 to 1_N-1 may indicate the position offset between the cell reference positions (e.g., cell reference positions A and cell reference positions B) corresponding to the cell reference lines #2 to #N and the cell reference positions corresponding to the cell reference line #1.
  • Example 2 using a differential method to indicate time information corresponding to other cell reference objects except the first cell reference object.
  • the following is an exemplary description using the cell reference objects as cell reference points and cell reference lines.
  • the first cell reference object is cell reference point #1
  • the first indication information may indicate the time information corresponding to cell reference point #1, that is, time information #1.
  • the cell reference object group includes cell reference points #2 to #N
  • the first indication information indicates the time offset of cell reference points #2 to #N relative to time information #1, for example, time offset 1_1 indicates the time offset of the time information corresponding to cell reference point #2 relative to cell reference point #1, and similarly, position offset 1_N-1 indicates the time offset of the position corresponding to cell reference point #N relative to cell reference point #1.
  • the difference between Table 2 and Table 6 is that time information #2 to #N can be replaced by time offsets 1_1 to 1_N-1.
  • the cell reference point list in the above Table 6 is only listed for ease of understanding, and this column may not be indicated in actual indication.
  • the first indication information may include N information element groups, and the N information element groups may be expressed as: ⁇ (cell reference position #1, time information #1), ..., (cell reference position #2, time offset 1_1), ..., (cell reference position #N, time offset
  • the information corresponding to the information element in the first indication information is time information or time offset information, it is possible to implicitly indicate which cell reference point is used as the first cell reference object.
  • the first cell reference object is cell reference line #1
  • the first indication information may indicate the time information corresponding to cell reference line #1, that is, time information #1.
  • the cell reference object group includes cell reference lines #2 to #N
  • the first indication information indicates the time offset of cell reference lines #2 to #N relative to cell reference line #1, for example, time offset 1_1 indicates the time offset of the time information corresponding to cell reference line #2 relative to cell reference line #1, and similarly, time offset 1_N-1 indicates the time offset of the time information corresponding to cell reference line #N relative to cell reference position #1.
  • the time information corresponding to each of the at least two cell reference objects includes: the time information corresponding to the first cell reference object, and the time offset between each cell reference object in the cell reference object group and the first cell reference object; or, the position corresponding to each of the at least two cell reference objects includes: the position corresponding to the first cell reference object, and the position offset between each cell reference object in the cell reference object group and the first cell reference object.
  • the indication overhead can be further reduced.
  • the first indication information may respectively indicate the position deviation and time deviation between each cell reference point in the cell reference object group and the first cell reference point.
  • the first indication information may indicate the cell reference position #1 and time information #1 corresponding to the cell reference point #1, as well as the position offset and time offset corresponding to each cell reference point in the cell reference control group (i.e., cell reference points #2 to #N) (i.e., position offset 1_1 to position offset 1_N-1, and time offset 1_1 to time offset 1_N-1 in Table 8).
  • the aforementioned Table 5 and Table 7 can be combined, and the first indication information can respectively indicate the position deviation and time deviation between each cell reference line in the cell reference object group and the first cell reference line, which will not be repeated here.
  • the first indication information is included in a system information block (SIB). That is, the first indication information may be broadcast via system information, so that the terminal device may be in an RRC idle state or In the case of RRC inactive state, the first indication information is obtained to implement mobility management (such as cell reselection).
  • SIB19 system information block
  • the first indication information may also be included in other SIBs, such as SIB9, etc., which is not specifically limited in the embodiments of the present application.
  • the terminal device can obtain the first indication information contained in the SIB by decoding the physical downlink control channel (physical downlink shared channel, PDSCH) of the physical downlink shared channel (physical downlink shared channel, PDSCH) that schedules the SIB.
  • the physical downlink control channel physical downlink shared channel, PDSCH
  • PDSCH physical downlink shared channel
  • the first indication information may also be included in proprietary signaling.
  • the proprietary signaling may be RRC signaling, that is, the indication information may be carried by an RRC setup (RRC set up) message, or carried by an RRC resume (RRC resume) message, or carried by an RRC reconfiguration (RRC reconfiguration) message.
  • RRC setup RRC set up
  • RRC resume RRC resume
  • RRC reconfiguration RRC reconfiguration
  • the location information of the terminal device can be determined through GNSS information, or the terminal device can also obtain the location information of the terminal device through other positioning methods, and the embodiments of the present application do not specifically limit this.
  • the target cell reference object is the cell reference object closest to the terminal device among the at least two cell reference objects.
  • the target cell reference object is the cell reference object closest to the terminal device, so that the time information corresponding to the target cell reference object is closer to the actual remaining service time of the terminal device, and then the terminal device performs neighboring cell measurement according to the time information corresponding to the target cell reference object, which can avoid starting neighboring cell measurement at the wrong time.
  • the cell reference point distribution in Figure 13 is used as an example for explanation.
  • the unfilled circular pattern in Figure 15 is the position of the terminal device, and the terminal device is closest to the cell reference point A23, that is, the cell reference point A23 is the reference object of the target cell, that is, the terminal device can perform neighboring area measurement according to the time information corresponding to the cell reference point A23.
  • the cell reference line distribution in Figure 13 is used as an example for explanation.
  • the filled circular pattern in Figure 16 is the position of the terminal device, and the vertical distance between the terminal device and the cell reference line (A2, B2) is the shortest, that is, the cell reference line (A2, B2) is the target cell reference object, that is, the terminal device can perform neighboring cell measurement according to the time information corresponding to the cell reference line (A2, B2).
  • the target cell reference object may be a cell reference object in a first set of at least two cell reference objects, and the terminal device may randomly select a cell reference object from the first set as the target cell reference object.
  • the first set includes cell reference objects whose distance from the terminal device is less than or equal to a second threshold value among at least two cell reference objects.
  • the second threshold value may be, for example, 20m, 30m, or 40m, etc., and the second threshold value may be related to the coverage area of the cell, which is not specifically limited in the embodiments of the present application.
  • the target cell reference object may be a cell reference object that is closest to the terminal device and is located toward the side of the moving direction of the NTN device (i.e., the satellite).
  • the NTN device i.e., the satellite.
  • the terminal device is closest to the cell reference line (A2, B2), the terminal device is located close to the middle position between the cell reference line (A2, B2) and the cell reference line (A3, B3), and the stop coverage time corresponding to the cell reference line (A2, B2) is later than the stop coverage time corresponding to the cell reference line (A3, B3).
  • the cell reference line (A3, B3) may be used as the target cell reference object.
  • the terminal device can determine the cell coverage stop time corresponding to the target cell reference object based on the time information corresponding to the target cell reference object, and the terminal device can perform neighboring area measurement before the cell coverage stop time.
  • the terminal device can also correct the cell coverage stop time according to the location of the terminal device, the speed information of the NTN device, etc., and perform neighboring area measurement before the corrected cell coverage stop time.
  • the specific implementation of the terminal device performing neighboring area measurement according to the time information corresponding to the target cell reference object depends on the actual implementation of the terminal device, and the embodiments of the present application do not make specific limitations on this.
  • the terminal device can obtain the first indication information, and determine the time information corresponding to the target cell reference object from the time information corresponding to multiple cell reference objects based on the first indication information and the location information of the terminal device, and then obtain the time when the NTN device corresponding to the location of the terminal device stops covering the cell, thereby avoiding starting the neighboring cell measurement at the wrong time, for example, avoiding delay in triggering the neighboring cell measurement, reducing the impact on communication continuity, and avoiding triggering the neighboring cell measurement in advance, thereby avoiding the terminal device from triggering the neighboring cell measurement too early or frequently, thereby reducing power consumption.
  • FIG17 is a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG17 , the communication method includes:
  • the NTN device obtains first indication information, wherein the first indication information is used to indicate a cell boundary and time information corresponding to the cell boundary.
  • the time information is used to indicate the time when the NTN device stops covering the cell.
  • the cell boundary may be at least one of the multiple boundaries of the cell covered by the NTN device.
  • at least one boundary may be the line (A1, B1) or the line (AN, BN) in FIG. 12 or FIG. 13, that is, at least one boundary may include a boundary perpendicular to the movement direction of the NTN device among the multiple boundaries.
  • the cell boundary is the circumference of the circular area.
  • the cell boundary can be indicated by indicating the cell reference. If the cell boundary is circular or elliptical, it can be indicated by indicating the cell reference point and radius corresponding to the center of the cell boundary, or indicating the cell reference point, major axis and minor axis corresponding to the focus of the cell boundary.
  • the specific implementation of indicating the above-mentioned cell reference point, cell reference line, and time information can refer to the aforementioned step S1001, which will not be repeated.
  • the NTN device sends first indication information to the terminal device.
  • the terminal device obtains the first indication information from the NTN device.
  • step S1702 may refer to the aforementioned step S1002 and will not be described in detail.
  • the terminal device determines target time information according to the location information of the terminal device, the first indication information, and the speed information of the NTN device, wherein the target time information is used to indicate the time when the NTN device stops covering the terminal device.
  • the terminal device determines the target time information according to the distance between the terminal device and the cell boundary, the speed information of the NTN device, and the time information corresponding to the cell boundary. That is, the terminal device can determine the time when the NTN device stops covering the terminal device according to the distance between the terminal device and the cell boundary and the speed of the NTN device, that is, the terminal device can determine the actual stop coverage time corresponding to the position of the terminal device.
  • the time information corresponding to the cell reference line (A1, B1) is the stop coverage time #1.
  • the terminal device can determine the difference or ratio between the stop coverage time of the NTN device corresponding to the cell reference line where the terminal device is located and the stop coverage time #1 based on the distance between the terminal device and the cell reference line (A1, B1) and the speed of the NTN device. In this way, the terminal device can determine the actual stop coverage time corresponding to the location of the terminal device, that is, the time when the NTN device stops covering the terminal device.
  • S1704 The terminal device performs neighboring cell measurement according to the target time information.
  • step S1704 may refer to the aforementioned step S1004 and will not be described in detail.
  • the terminal device can obtain the first indication information, and determine the actual time when the NTN device stops covering the terminal device based on the first indication information, the location information of the terminal device, and the speed information of the NTN device, and then the terminal device performs neighbor cell measurement according to the actual time, it can avoid starting the neighbor cell measurement at the wrong time, for example, it can avoid delaying the triggering of the neighbor cell measurement, reducing the impact on the continuity of communication, and for example, it can avoid triggering the neighbor cell measurement in advance, thereby avoiding the terminal device from triggering the neighbor cell measurement too early or frequently, thereby reducing power consumption.
  • the methods and/or steps implemented by the terminal device can also be implemented by components that can be used for the terminal device (such as a processor, a chip, a chip system, a circuit, a logic module, or software); the methods and/or steps implemented by the NTN device can also be implemented by components that can be used for the NTN device (such as a processor, a chip, a chip system, a circuit, a logic module, or software).
  • the above mainly introduces the scheme provided by the present application. Accordingly, the present application also provides a communication device, which is used to implement various methods in the above method embodiments.
  • the communication device can be a terminal device in the above method embodiments, or a device including a terminal device, or a component that can be used for a terminal device, such as a chip or a chip system.
  • the communication device can be an NTN device in the above method embodiments, or a device including an NTN device, or a component that can be used to calculate an NTN device, such as a chip or a chip system.
  • the communication device includes hardware structures and/or software modules corresponding to the execution of each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • the communication device can be divided into functional modules according to the above method embodiment.
  • each The functions can be divided into various functional modules, 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 embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.
  • FIG18 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • the communication device 1800 includes: a processing module 1801 and a transceiver module 1802.
  • the processing module 1801 is used to perform the processing function of the terminal device or NTN device in the above method embodiment.
  • the transceiver module 1802 is used to perform the transceiver function of the terminal device or NTN device in the above method embodiment.
  • the communication device 1800 provided in this embodiment can execute the above communication method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.
  • the transceiver module 1802 may include a receiving module and a sending module (not shown in FIG. 18 ).
  • the transceiver module is used to implement the sending function and the receiving function of the communication device 1800 .
  • the communication device 1800 may further include a storage module (not shown in FIG. 18 ), which stores a program or instruction.
  • the processing module 1801 executes the program or instruction, the communication device 1800 may perform the functions of the terminal device or the NTN device in the method shown in FIG. 10 .
  • the processing module 1801 involved in the communication device 1800 can be implemented by a processor or a processor-related circuit component, which can be a processor or a processing unit;
  • the transceiver module 1802 can be implemented by a transceiver or a transceiver-related circuit component, which can be a transceiver or a transceiver unit.
  • FIG19 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application.
  • the communication device may be a terminal device or an NTN device, or may be a chip (system) or other component or assembly that can be provided in a terminal device or an NTN device.
  • a communication device 1900 may include a processor 1901.
  • the communication device 1900 may further include a memory 1902 and/or a transceiver 1903.
  • the processor 1901 is coupled to the memory 1902 and the transceiver 1903, for example, via a communication bus.
  • the processor 1901 is the control center of the communication device 1900, which can be a processor or a general term for multiple processing elements.
  • the processor 1901 is one or more central processing units (CPUs), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (field programmable gate arrays, FPGAs).
  • CPUs central processing units
  • ASIC application specific integrated circuit
  • integrated circuits configured to implement the embodiments of the present application, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (field programmable gate arrays, FPGAs).
  • processor 1901 may execute various functions of communication device 1900 by running or executing software programs stored in memory 1902 and calling data stored in memory 1902 .
  • the processor 1901 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 19 .
  • the communication device 1900 may also include multiple processors, such as the processor 1901 and the processor 1904 shown in FIG. 19. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
  • the memory 1902 is used to store the software program for executing the solution of the present application, and the execution is controlled by the processor 1901.
  • the specific implementation method can refer to the above method embodiment, which will not be repeated here.
  • the memory 1902 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.
  • the memory 1902 may be connected to the processor 1901. They may be integrated together or exist independently and be coupled to the processor 1901 through the interface circuit of the communication device 1900 (not shown in FIG. 19 ), which is not specifically limited in the embodiment of the present application.
  • the transceiver 1903 is used for communication with other communication devices.
  • the communication device 1900 is a terminal device, and the transceiver 1903 can be used to communicate with an NTN device, or with another terminal device.
  • the communication device 1900 is an NTN device, and the transceiver 1903 can be used to communicate with a terminal device, or with another NTN device.
  • transceiver 1903 may include a receiver and a transmitter (not shown separately in FIG. 19 ), wherein the receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.
  • the transceiver 1903 can be integrated with the processor 1901, or it can exist independently and be coupled to the processor 1901 through the interface circuit of the communication device 1900 (not shown in Figure 19), which is not specifically limited in the embodiment of the present application.
  • the structure of the communication device 1900 shown in FIG. 19 does not constitute a limitation on the communication device, and an actual communication device may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.
  • the technical effects of the communication device 1900 can refer to the technical effects of the communication method described in the above method embodiment, and will not be repeated here.
  • an embodiment of the present application further provides a computer-readable storage medium, which stores a computer program or instructions, and the computer program or instructions implement the functions of the above method embodiment when executed by a computer.
  • the embodiment of the present application further provides a computer program product, which implements the functions of the above method embodiment when executed by a computer.
  • an embodiment of the present application further provides a communication system, which includes the terminal device described in the above method embodiment and the NTN device described in the above method embodiment.
  • an embodiment of the present application further provides a communication method, which includes the method described in any of the above method embodiments or any of its implementations.
  • the above embodiments it can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more media integrated. Available media can be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid state drives (SSDs)), etc.
  • 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.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed over multiple network units. It is actually necessary to select some or all of the units to achieve the purpose of the solution of this embodiment.
  • 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 functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application.
  • the aforementioned storage media include: 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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Abstract

La présente demande concerne un procédé de communication et un appareil de communication. Le procédé consiste à : acquérir des premières informations d'indication ; sur la base d'informations de position d'un appareil terminal et des premières informations d'indication, déterminer des informations de temps correspondant à un objet de référence de cellule cible ; et sur la base des informations de temps correspondant à l'objet de référence de cellule cible, exécuter une mesure de cellule voisine. Les premières informations d'indication sont utilisées pour indiquer des informations de position et de temps correspondant à chaque objet de référence de cellule parmi au moins deux objets de référence de cellule. Les informations de temps sont utilisées pour indiquer le moment où un appareil NTN arrête la couverture cellulaire. L'objet de référence de cellule cible est un objet de référence de cellule déterminé parmi lesdits au moins deux objets de référence de cellule sur la base de la distance entre l'appareil terminal et chacun desdits au moins deux objets de référence de cellule. Ainsi, l'appareil terminal peut déterminer les informations de temps correspondant à l'objet de référence de cellule cible parmi des informations de temps correspondant à une pluralité d'objets de référence de cellule, et peut exécuter une mesure de cellule voisine sur la base des informations de temps, ce qui permet d'éviter le démarrage d'une mesure de cellule voisine à une mauvaise occasion.
PCT/CN2023/125731 2023-10-20 2023-10-20 Procédé de communication et appareil de communication Pending WO2025081476A1 (fr)

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WO2022199430A1 (fr) * 2021-03-23 2022-09-29 华为技术有限公司 Procédé, appareil et système de mesure et de rapport
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WO2023131320A1 (fr) * 2022-01-10 2023-07-13 华为技术有限公司 Procédé et appareil de communication
CN116567520A (zh) * 2022-01-30 2023-08-08 华为技术有限公司 小区移动性管理的方法和装置

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WO2023131320A1 (fr) * 2022-01-10 2023-07-13 华为技术有限公司 Procédé et appareil de communication
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