Communication method and related device

Abstract

A communication method and a related device, which are used for enabling, by means of an indication for a track area where a network device performs communication, a terminal device to perform communication when the network device is located in a track area where the network device expects to perform communication, such that the terminal device can be prevented from performing communication when the network device is located in a track area outside the track area where the network device expects to perform communication, and the possibility of communication interference between signals of different network devices can be reduced, thereby improving the communication efficiency. In the method, a terminal device receives first information, wherein the first information is used for indicating a track area where a first network device performs communication; and when it is determined that the position of the first network device is located in the track area, the terminal device sends second information, wherein the second information is associated with the first network device.

Description

A communication method and related equipment Technical Field

[0001] The present application relates to the field of communications, and in particular to a communication method and related equipment. Background Art

[0002] In a communication system, a signal sent by a network device (e.g., a signal carrying configuration information / configuration signaling) can configure communication resources. The communication resources may include the communication resources of the network device itself, as well as the communication resources of any adjacent network devices, so that the receiver of the signal can determine the corresponding communication resources based on the signal. For example, if the receiver of the signal is a terminal device, the terminal device can obtain network services based on the communication resources.

[0003] Generally, for example, a ground base station is a network device. This ground base station and its neighbors are typically fixed somewhere on the ground, meaning the relative positions of different ground base stations are generally fixed. To address this, network administrators can plan the network in advance so that different signals sent by different ground base stations within the same communication area indicate different communication resources (e.g., time domain resources, frequency domain resources, etc.), thereby reducing communication interference between terminal devices within the same communication area.

[0004] However, network equipment may not be fixed to a specific location on the ground. For example, the network equipment may be a low-orbit satellite, a medium-orbit satellite, or a high-orbit satellite. In this case, due to the high-speed movement of the network equipment itself, its location may change frequently. As a result, different network equipment may send different signals to the same communication area, indicating the same communication resources, which increases the possibility of communication interference and affects communication efficiency.

[0005] Summary of the Invention

[0006] The present application provides a communication method and related equipment, which are used to enable a terminal device to communicate when the network device is located in the track area where the network device expects to communicate by indicating the track area where the network device communicates. This can avoid the terminal device from communicating when the network device is located in a track area outside the track area where the network device expects to communicate, and can reduce the possibility of communication interference between signals of different network devices, thereby improving communication efficiency.

[0007] The first aspect of the present application provides a communication method, which is executed by a terminal device, or the method is executed by some components in the terminal device (such as a processor, chip or chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the terminal device functions. In the first aspect and its possible implementation, the method is described as being executed by a terminal device. In this method, the terminal device receives first information, which is used to indicate the track area of ​​communication of the first network device; when it is determined that the position of the first network device is located in the track area, the terminal device sends second information, which is associated with the first network device.

[0008] Based on the above technical solution, the first information received by the terminal device is used to indicate the orbital area for communication of the first network device. Thereafter, when the terminal device determines that the position of the first network device is located in the orbital area, the terminal device sends the second information associated with the first network device. In other words, after the terminal device determines the orbital area for communication of the network device based on the received first information, when it is determined that the position of the network device is located in the orbital area, the terminal device determines that communication with the network device can be initiated. Thus, by indicating the orbital area for communication of the network device, the terminal device can communicate when the network device is located in the orbital area with which the network device expects to communicate, and can avoid the terminal device from communicating when the network device is located in a orbital area outside the orbital area with which the network device expects to communicate. This can reduce the possibility of communication interference between signals of different network devices, thereby improving communication efficiency.

[0009] In addition, for a terminal device, the orbital area for network device communication may correspond to the angular interval for communication of the terminal device, i.e., the terminal device may determine the angular interval in which the network device may communicate through the orbital area of ​​the network device (e.g., the terminal device may communicate with the network device through a communication beam within the angular interval). Accordingly, in the above technical solution, by indicating the orbital area for network device communication, the terminal device may communicate based on the desired communication angular interval indicated by the network device.

[0010] It should be understood that the track area in which the first network device communicates can be understood as the track area in which the first network device is located, and the first network device has the ability to communicate. To this end, the track area in which the first network device communicates can be replaced by: the track area in which the first network device can communicate, the track area in which the first network device is allowed to communicate, etc.

[0011] Optionally, the track area for communication between one or more network devices located on the same track may be the same. In the above technical solution, the first network device may be one of the one or more network devices, and the first network device may also be the one or more network devices. In other words, the first information may be used to indicate the track area for communication between one or more network devices on the track where the first network device is located. Thus, when the terminal device determines that the position of any one of the one or more network devices on the track where the first network device is located is located in the track area, the terminal device may determine that it can communicate with the network device on the track where the first network device is located, and then send the second information associated with the first network device.

[0012] Optionally, the track areas for communication between different network devices located on different tracks may be different. For example, the track areas for communication between different network devices located on different tracks may be completely different (i.e., completely non-overlapping), or the track areas for communication between different network devices located on different tracks may partially overlap. Accordingly, for the terminal device, the angular intervals for communication between different network devices located on different tracks are different. Thus, the terminal device can communicate with network devices on different tracks through different communication angular intervals, and when different network devices located on different tracks use the same communication resources, interference can also be reduced.

[0013] Optionally, the first information may be information sent by broadcasting, for example, the first information may include a synchronization signal block (synchronization signal / physical broadcast channel block, SS / PBCH block, SS / PBCH block or SSB), a system information block (SIB), etc.

[0014] It should be understood that when the first network device is a satellite, the orbit of the satellite can be a closed curve formed by an approximately circular / elliptical figure formed by the movement around the earth. Due to the rotation of the earth, an orbit of the satellite passes over the earth to form an arc surface (or an approximate arc surface). The orbit area of ​​the satellite's communication can be greater than or equal to the arc surface, and the satellite's movement speed is generally greater than the movement speed of the terminal device. For this reason, during the movement of the satellite, when the arc surface covers the terminal device or the terminal device is located in the area where the arc surface is projected on the ground, the satellite can communicate with the terminal device or the communication quality between the satellite and the terminal device is better; on the contrary, when the arc surface does not cover the terminal device or the terminal device is located outside the area where the arc surface is projected on the ground, the satellite may not be able to communicate with the terminal device or the communication quality between the satellite and the terminal device is poor. Accordingly, in the above technical solution, the orbit area of ​​the first network device communication can be understood as the arc surface area, or the area where the arc surface area is projected on the ground, or the three-dimensional space area between the arc surface area and the projection.

[0015] In a possible implementation manner of the first aspect, the track area includes a position interval range between tracks.

[0016] Based on the above technical solution, the arc formed by the track area in which the first network device communicates can be characterized by the position interval between the tracks in the tangential direction of the track's running direction. Accordingly, the track area indicated by the first information can include the position interval range between the tracks. That is, the terminal device can determine the position interval range between the tracks in which the first network device communicates based on the first information. Subsequently, the terminal device can determine whether the first network device is located within the track area based on the position of the first network device and the position interval range between the tracks.

[0017] Optionally, the position interval range between the orbits includes a starting point of the position interval and an end point of the position interval, and the first information includes the offset of the orbital equatorial angle corresponding to the starting point of the position interval at the reference time compared to the reference point angle, and / or the offset of the orbital equatorial angle at the end point of the position interval at the reference time compared to the reference point angle.

[0018] For example, the reference point angle may include Greenwich longitude, 180° east longitude, or 90° west longitude.

[0019] Exemplarily, the reference moment may include the current moment, a moment before the current moment and differing from the current moment by a preset time length, or a moment after the current moment and differing from the current moment by a preset time length, etc.

[0020] Optionally, the reference point angle may be a reference point angle pre-configured by a standard or protocol, or the network device may indicate the reference point angle to the terminal device through configuration, which is not limited here.

[0021] Optionally, the first information may also indicate the position interval range between the tracks in other ways, for example, the first information carries the position information of the starting point and / or the ending point of the position interval (or the index of the position information). For example, the position information may be indicated by latitude and longitude coordinates and a corresponding timestamp; for another example, the position information may be indicated by latitude and longitude coordinates and an altitude.

[0022] In a possible implementation manner of the first aspect, the track area includes an angle interval range within the track.

[0023] Based on the above technical solution, the arc formed by the track area in which the first network device communicates can be characterized by an angular range within the track in the direction of track operation. Accordingly, the track area indicated by the first information can include an angular range within the track. That is, the terminal device can determine the angular range within the track in which the first network device communicates based on the first information. Subsequently, the terminal device can determine whether the first network device is located within the track area based on the position of the first network device and the angular range within the track.

[0024] In a possible implementation of the first aspect, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

[0025] Based on the above technical solution, when the track area includes an angle interval range within the track, the first information may include the offset of the starting point and / or the end point of the angle interval compared to the reference point, so that the terminal device can determine the angle interval within the track of the first network device based on the offset.

[0026] Exemplarily, the reference point may include the ascending node of the orbit, the descending node of the orbit, the highest latitude position passed by the orbit, etc.

[0027] Optionally, the reference point may be a reference point pre-configured by a standard or protocol, or the network device may indicate the reference point to the terminal device through configuration, which is not limited here.

[0028] Optionally, the first information may also indicate the angular interval range within the track in other ways, for example, the first information may carry the location information (or index of the location information) of the interval start point and / or the interval end point. For example, the location information may be indicated by longitude and latitude coordinates; or, for another example, the location information may be indicated by longitude and latitude coordinates and altitude.

[0029] In a possible implementation of the first aspect, the method also includes: the terminal device receives third information, and the third information is used to indicate the effectiveness condition of the track area; when it is determined that the position of the first network device is located in the track area, the terminal device sends the second information, including: when it is determined that the position of the first network device is located in the track area and meets the effectiveness condition, the terminal device sends the second information.

[0030] Based on the above technical solution, the terminal device can also determine the effectiveness conditions of the track area based on the received third information, and when it is determined that the position of the first network device is located in the track area and meets the effectiveness conditions, the terminal device determines that it can communicate with the first network device, and then sends the second information associated with the first network device.

[0031] Optionally, the third information and the first information are carried in the same message (for example, the first information includes the third information, or the third information includes the first information), or in different messages, which is not limited here.

[0032] Optionally, the terminal device may obtain the third information in a preconfigured or predefined manner.

[0033] In a possible implementation manner of the first aspect, when it is determined that the validation condition is not met, the method further includes: the terminal device sending fourth information, where the fourth information is used to request updating the first information.

[0034] Based on the above technical solution, after the terminal device determines the effectiveness conditions of the track area based on the received third information, if the terminal device determines that the effectiveness conditions are not met, the terminal device can also send fourth information for requesting to update the first information, so that the network device can subsequently send the updated first information based on the request, and update the track area of ​​communication of the first network device indicated by the first information through the updated first information.

[0035] In a possible implementation manner of the first aspect, the effectiveness condition includes an effective time and / or an effective geographical location.

[0036] Based on the above technical solution, the validity condition indicated by the third information may include the validity time and / or the validity geographic location, so that the terminal device can determine whether the validity condition is met based on the current time and / or current geographic location. Furthermore, if the terminal device determines that the validity condition is met, the terminal device sends the second information associated with the first network device to increase the possibility that the second information is successfully received by the network device.

[0037] Optionally, when the effectiveness condition indicated by the third information includes the time of effectiveness, the third information may include one or more of the starting time of effectiveness, the duration of effectiveness, and the end time of effectiveness, or the third information may include the index value corresponding to one or more of the starting time of effectiveness, the duration of effectiveness, and the end time of effectiveness.

[0038] Optionally, when the effectiveness condition indicated by the third information includes the effective geographical location, the third information may include one or more of the absolute coordinate value of the geographical location, the relative coordinate value relative to the reference point, and the area indication information relative to the reference point (for example, when the area is a circular area, the indication information may include the radius or diameter of the circular area; for example, when the area is a rectangular area, the indication information may include the side length of the rectangle); or, the third information may include the absolute coordinate value of the geographical location, the relative coordinate value relative to the reference point, and the index value corresponding to one or more of the area indication information relative to the reference point.

[0039] In a possible implementation of the first aspect, the terminal device sends the second information, including: the terminal device sends the second information to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0040] Based on the above technical solution, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can determine that it can communicate with the first network device, and then the terminal device can send at least one of the above information to the first network device to realize at least one of the terminal device's measurement, initial access, switching access and data transmission of the first network device.

[0041] Exemplarily, the cell measurement information of the terminal device for the first network device can be used to indicate the measurement result of the terminal device on the signal of the cell of the first network device. For example, the signal of the cell may include SSB, channel state information reference signal (CSI-RS), etc. The measurement result of the signal of the cell may include received signal strength indication (RSSI), reference signal received power (RSRP), reference signal received quality (RSRQ), etc.

[0042] Exemplarily, the initial access information for accessing the first network device may include a random access preamble (random access preamble), message 1 (message 1, MSG1), message A (message A, MSGA), and the like.

[0043] Exemplarily, the handover access information for accessing the first network device may include a preamble.

[0044] Exemplarily, the uplink data of the terminal device may include data or control information sent on a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).

[0045] In a possible implementation of the first aspect, the terminal device sends the second information, including: the terminal device sends the second information to the second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0046] Based on the above technical solution, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can determine that it can communicate with the first network device, and then the terminal device can send at least one of the above information to the second network device to realize at least one of the terminal device's measurement, switching access and data transmission of the first network device.

[0047] Optionally, the second network device may be an adjacent network device of the first network device, so that the terminal device can implement at least one of measuring a cell in the first network device, initiating handover access to the first network device, and initiating data transmission to the first network device through the process of sending the second information. The first network device and the second network device may be network devices located on the same track (i.e., network devices of the same system) or network devices located on different tracks (i.e., network devices of different systems), and this is not limited here.

[0048] In a possible implementation manner of the first aspect, the method further includes: the terminal device receives fifth information, where the fifth information is used to determine the location of the first network device.

[0049] Based on the above technical solution, the terminal device can also receive the fifth information, so that the terminal device can determine the location of the first network device based on the fifth information, and subsequently determine whether to communicate with the first network device based on the location of the first network device and the track area in which the first network device communicates.

[0050] Optionally, the terminal device may determine the location of the first network device in a preconfigured manner.

[0051] In a possible implementation of the first aspect, the method further includes: the terminal device transmitting sixth information, the sixth information being used to indicate a position interval range between tracks and / or an angle interval range within a track with which the network device (can) communicate. Thus, the network device may use the sixth information transmitted by the terminal device as one basis for determining the track area indicated by the first information, enabling the network device to communicate with the terminal device within the position interval range between tracks and / or the angle interval range within a track with which the terminal device desires to communicate.

[0052] The second aspect of the present application provides a communication method, which is performed by a network device, or the method is performed by some components in the network device (such as a processor, chip or chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the network device functions. In the second aspect and its possible implementation, the method is described as being performed by a network device, and the network device can be the first network device or the second network device described later. In this method, the network device determines first information, which is used to indicate the track area of ​​communication of the first network device; the network device sends the first information.

[0053] Based on the above technical solution, the first information sent by the network device is used to indicate the track area for communication of the first network device. Thereafter, after the terminal device determines the track area for communication of the first network device based on the received first information, when it is determined that the position of the first network device is located in the track area, the terminal device determines that it can initiate communication with the first network device (or, the terminal device can reside in the first network device). Thus, by indicating the track area for communication of the network device, the terminal device can communicate when the network device is located in the track area with which the network device expects to communicate, and can avoid the terminal device from communicating when the network device is located in a track area outside the track area with which the network device expects to communicate. This can reduce the possibility of communication interference between signals of different network devices, thereby improving communication efficiency.

[0054] In addition, for a terminal device, the orbital area for network device communication may correspond to the angular interval for communication of the terminal device, i.e., the terminal device may determine the angular interval in which the network device may communicate through the orbital area of ​​the network device (e.g., the terminal device may communicate with the network device through a communication beam within the angular interval). Accordingly, in the above technical solution, by indicating the orbital area for network device communication, the terminal device may communicate based on the desired communication angular interval indicated by the network device.

[0055] It should be noted that the network device can determine the first information in a variety of ways. For example, the network device can determine the first information through pre-configuration. Alternatively, the network device can obtain the first information through configuration of other network devices (such as core network devices or other access network devices, etc.), or the network device can determine the first information based on the signals of other devices (such as terminal devices or network devices) detected / perceived, based on the signals of other devices detected / perceived, without limitation here.

[0056] In one example implementation, the network device may receive sixth information from the terminal device, where the sixth information indicates a position interval range between tracks and / or an angle interval range within a track with which the network device may communicate. The network device may use the sixth information sent by the terminal device as one of the bases for determining the track area indicated by the first information, enabling the network device to communicate with the terminal device within the position interval range between tracks and / or the angle interval range within a track with which the terminal device desires to communicate.

[0057] In another implementation example, the network device may receive seventh information from another network device, where the seventh information indicates a position interval range between tracks and / or an angle interval range within a track with which the network device may communicate. Thus, the network device may use the seventh information sent by the other network device as one of the bases for determining the track area indicated by the first information, enabling the network device to communicate with the terminal device within the position interval range between tracks and / or the angle interval range within a track with which the other network device desires to communicate, thereby enabling interaction between different network devices to avoid mutual interference.

[0058] In a possible implementation manner of the second aspect, the track area includes a position interval range between tracks.

[0059] Based on the above technical solution, the track area indicated by the first information may include the position interval range between tracks, that is, the terminal device can determine the position interval range between tracks for communication with the first network device based on the first information, and subsequently the terminal device can determine whether the position of the first network device is located in the track area based on the position of the first network device and the position interval range between the tracks.

[0060] Optionally, the position interval range between the orbits includes a starting point of the position interval and an end point of the position interval, and the first information includes the offset of the orbital equatorial angle corresponding to the starting point of the position interval at the reference time compared to the reference point angle, and / or the offset of the orbital equatorial angle at the end point of the position interval at the reference time compared to the reference point angle.

[0061] In a possible implementation manner of the second aspect, the track area includes an angle interval range within the track.

[0062] Based on the above technical solution, the track area indicated by the first information may include the angle interval range within the track, that is, the terminal device can determine the angle interval range within the track in which the first network device communicates based on the first information, and subsequently the terminal device can determine whether the position of the first network device is located in the track area based on the position of the first network device and the angle interval range within the track.

[0063] In a possible implementation of the second aspect, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

[0064] Based on the above technical solution, when the track area includes an angle interval range within the track, the first information may include the offset of the starting point and / or the end point of the angle interval compared to the reference point, so that the terminal device can determine the angle interval within the track of the first network device based on the offset.

[0065] In a possible implementation manner of the second aspect, the method further includes: when determining that the position of the first network device is located in the track area, the network device receives second information, where the second information is associated with the first network device.

[0066] Based on the above technical solution, when the first network device is located in the track area indicated by the first information, the terminal device can determine that it can communicate with the first network device, that is, the terminal device can send the second information associated with the first network device. Correspondingly, the network device can also receive the second information.

[0067] In a possible implementation of the second aspect, the method also includes: the network device sends third information, and the third information is used to indicate the effectiveness condition of the track area; when it is determined that the position of the first network device is located in the track area, the network device receives the second information, including: when it is determined that the position of the first network device is located in the track area and meets the effectiveness condition, the network device receives the second information.

[0068] Based on the above technical solution, the network device can also send a third information, so that the terminal device determines the effectiveness conditions of the track area based on the received third information, and when it is determined that the position of the first network device is located in the track area and meets the effectiveness conditions, the terminal device determines that it can communicate with the first network device, and then sends the second information associated with the first network device.

[0069] In a possible implementation manner of the second aspect, the method further includes: the network device receiving fourth information, where the fourth information is used to request updating the first information.

[0070] Based on the above technical solution, after the network device sends the third information, the terminal device determines the effectiveness conditions of the track area based on the received third information. If the terminal device determines that the effectiveness conditions are not met, the terminal device can also send fourth information for requesting to update the first information, so that the network device can subsequently send the updated first information based on the request, and update the track area of ​​the communication of the first network device indicated by the first information through the updated first information.

[0071] In a possible implementation manner of the second aspect, the effectiveness condition includes an effective time and / or an effective geographical location.

[0072] Based on the above technical solution, the validity condition indicated by the third information may include the validity time and / or the validity geographic location, so that the terminal device can determine whether the validity condition is met based on the current time and / or current geographic location. Furthermore, if the terminal device determines that the validity condition is met, the terminal device sends the second information associated with the first network device to increase the possibility that the second information is successfully received by the network device.

[0073] In a possible implementation of the second aspect, the method is applied to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0074] Based on the above technical solution, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can determine that it can communicate with the first network device, and then the terminal device can send at least one of the above information to the first network device to realize at least one of the terminal device's measurement, initial access, switching access and data transmission of the first network device.

[0075] In a possible implementation of the second aspect, the method is applied to a second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0076] Based on the above technical solution, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can determine that it can communicate with the first network device, and then the terminal device can send at least one of the above information to the second network device to realize at least one of the terminal device's measurement, switching access and data transmission of the first network device.

[0077] In a possible implementation manner of the second aspect, the method further includes: the network device sending fifth information, where the fifth information is used to determine the location of the first network device.

[0078] Based on the above technical solution, the network device can also send fifth information so that the terminal device can determine the location of the first network device based on the fifth information, and subsequently determine whether to communicate with the first network device based on the location of the first network device and the track area in which the first network device communicates.

[0079] Optionally, the terminal device may determine the location of the first network device in a preconfigured manner.

[0080] The third aspect of the present application provides a communication method, which is executed by a terminal device, or the method is executed by some components in the terminal device (such as a processor, chip or chip system, etc.), or the method can also be implemented by a logic module or software that can realize all or part of the terminal device functions. In the third aspect and its possible implementation, the method is described as being executed by a terminal device. In this method, the terminal device receives first information, which is used to indicate the track area of ​​communication of the first network device; when it is determined that the position of the first network device is located in the track area, the terminal device camps on the first network device.

[0081] Based on the above technical solution, the first information received by the terminal device is used to indicate the track area for communication of the first network device. Thereafter, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can reside in the first network device. In other words, after the terminal device determines the track area for communication of the network device based on the received first information, when it is determined that the position of the network device is located in the track area, the terminal device determines that it can reside in the first network device and can communicate with the network device. Thus, by indicating the track area for communication of the network device, the terminal device can reside in the network device when the network device is located in the track area with which the network device expects to communicate, and can avoid the terminal device from residing in the network device when the network device is located in a track area outside the track area with which the network device expects to communicate. This can reduce the possibility of communication interference between signals of different network devices, thereby improving communication efficiency.

[0082] It should be understood that the terminal device camps on the first network device, which can be understood as the terminal device receiving system messages from the cell in the first network device, completing downlink time and frequency synchronization, and being able to receive information sent downlink from the first network device.

[0083] It should be noted that, in the third aspect, the implementation process of the terminal device can refer to the possible implementation process of the first aspect and achieve the corresponding technical effects. For example, in the third aspect, the implementation process of the first information can refer to the implementation process of the first information in the first aspect. For another example, in the third aspect, the terminal device can also exchange other information (including second information, third information, fourth information, fifth information, or sixth information, etc.) with the network device, and the implementation process of the other information can refer to the corresponding implementation process of the first aspect.

[0084] In a fourth aspect, the present application provides a communication device, which is a terminal device, or a component of a terminal device (such as a processor, chip, or chip system), or a logic module or software capable of implementing all or part of the terminal device's functions. In the fourth aspect and its possible implementations, the communication device is described as an example of a terminal device.

[0085] The device includes a processing unit and a transceiver unit; the transceiver unit is used to receive first information, which is used to indicate the track area for communication of the first network device; when the processing unit determines that the position of the first network device is located in the track area, the transceiver unit is also used to send second information, which is associated with the first network device.

[0086] In a possible implementation manner of the fourth aspect, the track area includes a position interval range between tracks.

[0087] In a possible implementation of the fourth aspect, the position interval range between the orbits includes a starting point of the position interval and an end point of the position interval, and the first information includes an offset of the orbital equatorial angle corresponding to the starting point of the position interval at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the end point of the position interval at a reference time compared to the reference point angle.

[0088] In a possible implementation manner of the fourth aspect, the track area includes an angle interval range within the track.

[0089] In a possible implementation of the fourth aspect, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

[0090] In a possible implementation of the fourth aspect, the transceiver unit is also used to receive third information, which is used to indicate the effectiveness conditions of the track area; when the processing unit determines that the position of the first network device is located in the track area, the transceiver unit is used to send the second information, including: when the processing unit determines that the position of the first network device is located in the track area and meets the effectiveness conditions, the transceiver unit is used to send the second information.

[0091] In a possible implementation manner of the fourth aspect, when the processing unit determines that the validation condition is not met, the transceiver unit is further configured to send fourth information, where the fourth information is used to request an update of the first information.

[0092] In a possible implementation manner of the fourth aspect, the effectiveness condition includes an effective time and / or an effective geographical location.

[0093] In a possible implementation of the fourth aspect, the transceiver unit is used to send the second information, including: the transceiver unit is used to send the second information to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0094] In a possible implementation of the fourth aspect, the transceiver unit is used to send the second information, including: the transceiver unit is used to send the second information to the second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0095] In a possible implementation manner of the fourth aspect, the transceiver unit is further configured to receive fifth information, where the fifth information is used to determine a location of the first network device.

[0096] In the fourth aspect of the present application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation method of the first aspect and achieve corresponding technical effects. For details, please refer to the first aspect and will not be repeated here.

[0097] In a fifth aspect, the present application provides a communication device, which is a network device, or a component of a network device (such as a processor, chip, or chip system), or a logic module or software capable of implementing all or part of the network device functions. In the fifth aspect and its possible implementations, the communication device is described as a network device.

[0098] The device includes a processing unit and a transceiver unit; the processing unit is used to determine first information, where the first information is used to indicate a track area for communication of a first network device; and the transceiver unit is used to send the first information.

[0099] In a possible implementation of the fifth aspect, the track area includes a position interval range between tracks.

[0100] In a possible implementation of the fifth aspect, the position interval range between the orbits includes a position interval start point and a position interval end point, and the first information includes an offset of the orbital equatorial angle corresponding to the starting point of the position interval at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the end point of the position interval at a reference time compared to the reference point angle.

[0101] In a possible implementation manner of the fifth aspect, the track area includes an angle interval range within the track.

[0102] In a possible implementation of the fifth aspect, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

[0103] In a possible implementation of the fifth aspect, when the processing unit determines that the position of the first network device is located in the track area, the transceiver unit is further used to receive second information, where the second information is associated with the first network device.

[0104] In a possible implementation of the fifth aspect, the transceiver unit is also used to send third information, which is used to indicate the effectiveness conditions of the track area; when the processing unit determines that the position of the first network device is located in the track area, the transceiver unit is used to receive the second information, including: when the processing unit determines that the position of the first network device is located in the track area and meets the effectiveness conditions, the transceiver unit is used to receive the second information.

[0105] In a possible implementation manner of the fifth aspect, the transceiver unit is further configured to receive fourth information, where the fourth information is used to request updating of the first information.

[0106] In a possible implementation manner of the fifth aspect, the effectiveness condition includes an effective time and / or an effective geographical location.

[0107] In a possible implementation of the fifth aspect, the device is applied to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0108] In a possible implementation of the fifth aspect, the apparatus is applied to a second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0109] In a possible implementation manner of the fifth aspect, the transceiver unit is further configured to send fifth information, where the fifth information is used to determine the location of the first network device.

[0110] In the fifth aspect of this application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation method of the second aspect and achieve corresponding technical effects. For details, please refer to the second aspect and will not be repeated here.

[0111] In a sixth aspect of the present application, a communication device is provided. The device is a terminal device, or the device is a component of the terminal device (such as a processor, chip, or chip system), or the device can also be a logic module or software that can implement all or part of the terminal device functions. In the sixth aspect and its possible implementations, the communication device is described as an example of executing the terminal device.

[0112] The device includes a processing unit and a transceiver unit; the transceiver unit is used to receive first information, and the first information is used to indicate the track area of ​​communication of the first network device; when the processing unit determines that the position of the first network device is located in the track area, the processing unit determines that the terminal device resides in the first network device.

[0113] In the sixth aspect of this application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation method of the third aspect and achieve corresponding technical effects. For details, please refer to the third aspect and will not be repeated here.

[0114] In the seventh aspect of the present application, a communication device is provided, comprising at least one processor coupled to a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the program or instructions so that the device implements the method in the aforementioned first aspect and any possible implementation thereof.

[0115] In an eighth aspect, the present application provides a communication device, comprising at least one processor coupled to a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the program or instructions so that the device implements the method in the aforementioned second aspect and any possible implementation thereof.

[0116] In the ninth aspect of the present application, a communication device is provided, comprising at least one processor coupled to a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the program or instructions so that the device implements the method in the aforementioned third aspect and any possible implementation thereof.

[0117] A tenth aspect of an embodiment of the present application provides a communication device, comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method as described in the first aspect and any possible implementation thereof.

[0118] In an eleventh aspect of an embodiment of the present application, a communication device is provided, comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method as described in the second aspect and any possible implementation thereof.

[0119] A twelfth aspect of an embodiment of the present application provides a communication device, comprising at least one logic circuit and an input / output interface; the logic circuit is used to execute the method as described in the third aspect above and any possible implementation thereof.

[0120] In a thirteenth aspect of the embodiment of the present application, there is provided a communication system, which includes the communication device of the fourth aspect and the communication device of the fifth aspect. Alternatively, the communication system includes the communication device of the fifth aspect and the communication device of the sixth aspect. Alternatively, the communication system includes the communication device of the seventh aspect and the communication device of the eighth aspect. Alternatively, the communication system includes the communication device of the eighth aspect and the communication device of the ninth aspect. Alternatively, the communication system includes the communication device of the tenth aspect and the communication device of the eleventh aspect. Alternatively, the communication system includes the communication device of the eleventh aspect and the communication device of the twelfth aspect.

[0121] A fourteenth aspect of an embodiment of the present application provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method in any possible implementation of any aspect of the first to third aspects above.

[0122] A fifteenth aspect of an embodiment of the present application provides a computer program product (or computer program). When the computer program product is executed by the processor, the processor executes any possible implementation method of any aspect of the first to third aspects above.

[0123] A sixteenth aspect of an embodiment of the present application provides a chip system, which includes at least one processor for supporting a communication device to implement any possible implementation method of any aspect of the first to third aspects above.

[0124] In one possible design, the chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of a chip or may include a chip and other discrete components. Optionally, the chip system may further include an interface circuit for providing program instructions and / or data to the at least one processor.

[0125] Among them, the technical effects brought about by any design method in the fourth to sixteenth aspects can refer to the technical effects brought about by the different design methods in the above-mentioned first to third aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0126] FIG1 is a schematic diagram of a communication system provided by the present application;

[0127] FIG2a is another schematic diagram of the communication system provided by the present application;

[0128] FIG2b is another schematic diagram of the communication system provided by the present application;

[0129] FIG3a is another schematic diagram of the communication system provided by the present application;

[0130] FIG3 b is another schematic diagram of the communication system provided by the present application;

[0131] FIG4 is another schematic diagram of the communication system provided by the present application;

[0132] FIG5 is a schematic diagram of a communication method provided by the present application;

[0133] FIG6 is another schematic diagram of a communication scenario provided by this application;

[0134] FIG7 is another schematic diagram of a communication scenario provided by this application;

[0135] FIG8 is another schematic diagram of a communication scenario provided by this application;

[0136] FIG9 is another schematic diagram of the communication method provided by the present application;

[0137] FIG10 is a schematic diagram of a communication device provided by the present application;

[0138] FIG11 is another schematic diagram of a communication device provided by the present application;

[0139] FIG12 is another schematic diagram of a communication device provided by the present application;

[0140] FIG13 is another schematic diagram of the communication device provided in this application. DETAILED DESCRIPTION

[0141] First, some of the terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0142] (1) Terminal device: It can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and / or data connectivity to the user, or a handheld device with wireless connection function, or other processing device connected to a wireless modem.

[0143] The terminal device may be any communication kit with wireless communication capabilities (the kit may include, for example, an antenna, a power supply module, cables, and a Wi-Fi module). The terminal device may also be a communication module with satellite communication capabilities, a satellite phone or its components, or a very small aperture terminal (VSAT). The terminal device may be a mobile terminal device, such as a mobile phone (also known as a "cellular" phone, mobile phone), a computer, and a data card. For example, the terminal device may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device that exchanges voice and / or data with a wireless access network. Examples include personal communication service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablet computers, and computers with wireless transceiver capabilities. A wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point (AP), a remote terminal, an access terminal, a user terminal, a user agent, a subscriber station (SS), a customer premises equipment (CPE), a terminal, a user equipment (UE), a mobile terminal (MT), a drone, etc. The terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 6G communication system or a terminal device in a future-evolved public land mobile network (PLMN). Of course, the terminal device in this application may also refer to a chip, a modem, a system on a chip (SoC) that is primarily responsible for relevant communication functions in the device, or a communication platform that may include a radio frequency (RF) part, etc.

[0144] (2) Network equipment: It can be a device in a wireless network. For example, the network equipment can be a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, which can also be called a base station. Currently, some examples of RAN equipment include: a new generation base station in a future communication system, a transmission reception point (TRP), an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a base band unit (BBU), or a wireless fidelity (Wi-Fi) access point (AP). In addition, in a network structure, the network equipment can include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

[0145] In some implementations, the network equipment may also include satellites, aircraft, drones, and ground station equipment connected to the satellites, aircraft, and drones.

[0146] Among them, the network device can send configuration information to the terminal device (for example, carried in a scheduling message and / or an indication message), and the terminal device further performs network configuration according to the configuration information, so that the network configurations between the network device and the terminal device are aligned; or, through the network configuration preset in the network device and the network configuration preset in the terminal device, the network configurations between the network device and the terminal device are aligned. Specifically, "alignment" means that when there are interactive messages between the network device and the terminal device, the two have a consistent understanding of the carrier frequency for sending and receiving interactive messages, the determination of the interactive message type, the meaning of the field information carried in the interactive message, or other configurations of the interactive message.

[0147] In addition, in other possible cases, the network device may be another device that provides wireless communication functions for the terminal device. The embodiments of this application do not limit the specific technology and specific device form used by the network device. For the convenience of description, the embodiments of this application are not limited.

[0148] The network device may further include a core network device, which may include, for example, an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF).

[0149] In the embodiments of the present application, the apparatus for implementing the function of the network device may be the network device, or may be a device capable of supporting the network device in implementing the function, such as a chip system, which may be installed in the network device. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described by taking the network device as an example.

[0150] (3) Configuration and pre-configuration: In this application, configuration and pre-configuration are used simultaneously. Configuration refers to the network device sending some parameter configuration information or parameter values ​​to the terminal device through messages or signaling, so that the terminal device can determine the communication parameters or resources during transmission based on these values ​​or information. Pre-configuration is similar to configuration, and can be parameter information or parameter values ​​negotiated in advance between the network device and the terminal device, or parameter information or parameter values ​​used by the network device or terminal device as specified by the standard protocol, or parameter information or parameter values ​​pre-stored in the network device or terminal device. This application does not limit this.

[0151] Furthermore, these values ​​and parameters can be changed or updated.

[0152] (4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. In addition, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0153] (5) “Sending” and “receiving” in the embodiments of the present application indicate the direction of signal transmission. For example, “sending information to XX” can be understood as the destination of the information being XX, which can include direct sending through the air interface, as well as indirect sending through the air interface by other units or modules. “Receiving information from YY” can be understood as the source of the information being YY, which can include direct receiving from YY through the air interface, as well as indirect receiving from YY through the air interface from other units or modules. “Sending” can also be understood as the “output” of the chip interface, and “receiving” can also be understood as the “input” of the chip interface.

[0154] In other words, sending and receiving can be performed between devices, for example, between a network device and a terminal device, or can be performed within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wiring or interface.

[0155] It is understandable that information may be processed between the source and destination of information transmission, such as coding, modulation, etc., but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated.

[0156] (6) In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information (such as the indication information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated may also be indirectly indicated by indicating other information, wherein the other information is associated with the information to be indicated; or only a part of the information to be indicated may be indicated, while the other part of the information to be indicated is known or agreed in advance. For example, the indication of specific information may be achieved by means of the arrangement order of each information agreed in advance (such as predefined by the protocol), thereby reducing the indication overhead to a certain extent. The present application does not limit the specific method of indication. It is understandable that for the sender of the indication information, the indication information can be used to indicate the information to be indicated, and for the receiver of the indication information, the indication information can be used to determine the information to be indicated.

[0157] In this application, unless otherwise specified, the same or similar parts between the various embodiments can refer to each other. In the various embodiments of this application, and the various methods / designs / implementations in each embodiment, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments and the various methods / designs / implementations in each embodiment are consistent and can be referenced to each other. The technical features in different embodiments and the various methods / designs / implementations in each embodiment can be combined to form new embodiments, methods, or implementations according to their inherent logical relationships. The following description of the implementation methods of this application does not constitute a limitation on the scope of protection of this application.

[0158] The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or a new wireless vehicle to everything (NR V2X) system; it can also be applied to a system with a hybrid LTE and 5G network; or a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT), or a drone communication system; or a communication system that supports multiple wireless technologies such as LTE and NR technologies; or a non-ground communication system, such as a satellite communication system, a high-altitude communication platform, etc. Alternatively, the communication system may also be applicable to narrowband-internet of things (NB-IoT), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), and future-oriented communication technologies. Or it may be other communication systems, wherein the communication system includes network equipment and terminal equipment, the network equipment serves as a configuration information sending entity, and the terminal equipment serves as a configuration information receiving entity. Specifically, in the communication system, there is an entity that sends configuration information to another entity, and sends data to another entity, or receives data sent by another entity; another entity receives the configuration information, and sends data to the configuration information sending entity according to the configuration information, or receives data sent by the configuration information sending entity. Among them, the present application can be applied to terminal devices in a connected state or an active state (active), and can also be applied to terminal devices in a non-connected state (inactive) or an idle state (idle).

[0159] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (such as 120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is connected to the RAN node 110 wirelessly, and the RAN node 110 is connected to the core network 200 wirelessly or by wire. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device that integrates the logical functions of the core network equipment and the logical functions of the RAN node. Terminals and RAN nodes may be connected to each other via wired or wireless means.

[0160] It should be noted that the technical solution of the embodiment of the present application is applicable to a communication system that integrates terrestrial communication and satellite communication, which may also be referred to as a non-terrestrial network (NTN) communication system. The terrestrial communication system may be, for example, a long term evolution (LTE) system, a universal mobile telecommunication system (UMTS), a 5G communication system or a new radio (NR) system, or a communication system that is the next step in the development of the 5G communication system, etc., which is not limited here.

[0161] Compared to traditional mobile communication systems, satellite communications offer advantages such as wider coverage, communication costs unrelated to transmission distance, and the ability to overcome natural geographical obstacles such as oceans, deserts, and mountains. To overcome the shortcomings of traditional communication networks, satellite communications can effectively supplement them. It is generally believed that non-terrestrial networks (NTNs) exhibit different channel characteristics than terrestrial communications, such as longer transmission delays and greater Doppler frequency deviations. For example, the round-trip delay for GEO satellite communications is 238 to 270 milliseconds (ms). The round-trip delay for LEO satellite communications is 8 to 20 ms. Satellite communication systems can be categorized into three types based on their orbital altitude: high Earth orbit (GEO) satellite communication systems, also known as synchronous orbit satellite systems; medium Earth orbit (MEO) satellite communication systems; and low Earth orbit (LEO) satellite communication systems.

[0162] GEO satellites, also known as geostationary orbit satellites, orbit at an altitude of 35,786 kilometers (km). Their primary advantages are stationary relative to the Earth and wide coverage. However, GEO satellites also have significant disadvantages: their distance from Earth requires larger antennas; their transmission latency is relatively high, around 0.5 seconds, making them inadequate for real-time services; and their orbital resources are relatively limited, resulting in high launch costs and a lack of coverage in polar regions. MEO satellites, orbiting at altitudes between 2,000 and 35,786 km, can achieve global coverage with a relatively small number of satellites. However, their transmission latency is higher than that of LEO satellites, and they are primarily used for positioning and navigation. Furthermore, satellites orbiting at altitudes between 300 and 2,000 km are called low-Earth Orbit (LEO). LEO satellites are lower than MEO and GEO satellites, resulting in lower data transmission latency, less power consumption, and relatively lower launch costs. Consequently, LEO satellite communication networks have made significant progress in recent years and garnered significant attention.

[0163] In a possible implementation, satellite equipment can be divided into a transparent mode and a regenerative mode according to its working mode.

[0164] The following will exemplify these two modes through the implementation methods shown in Figures 2a, 2b, 3a and 3b.

[0165] In the transparent transmission mode implementation shown in Figure 2a, the satellite and gateway (i.e., the NTN Gateway in Figure 2a) act as relays, namely the Remote Radio Unit (RRU) shown in Figure 2a. This relay process is required for communication between the terminal device and the gNB. In other words, in transparent transmission mode, the satellite performs relay forwarding functions.

[0166] For example, in the transparent transmission mode implementation shown in Figure 2b, when a satellite (including a GEO satellite, MEO satellite, or LEO satellite) operates in transparent transmission mode, it performs relay forwarding. Gateway stations have base station functions or partial base station functions; in this case, the gateway stations can be considered base stations. Alternatively, base stations can be deployed separately from gateway stations, in which case the feeder link latency includes both the satellite-to-gateway latency and the gateway-to-gNB latency.

[0167] Optionally, the transparent transmission mode can be based on the case where the gateway station and the gNB are together or located close to each other. For the case where the gateway station and the gNB are far apart, the feeder link delay can be calculated by adding the delay from the satellite to the gateway station and the delay from the gateway station to the gNB.

[0168] In the regenerative mode implementation shown in Figure 3a, the satellite and gateway (i.e., the NTN Gateway in Figure 3a) function as gNBs, enabling communication with end devices. In other words, in regenerative mode, the satellite assumes base station functionality or partial base station functionality, effectively acting as a base station.

[0169] Exemplarily, in the implementation of the regeneration mode shown in Figure 3b, when the satellite (including GEO satellite, MEO satellite, LEO satellite, etc.) operates in the regeneration mode, compared with the implementation shown in Figure 2b, the satellite has the function of a base station or partial base station function. At this time, the satellite can be regarded as a base station.

[0170] It's important to note that NTN and terrestrial base stations can interconnect through a common core network. Interfaces defined between base stations can also enable more timely collaboration and interconnection. In NR, the interface between base stations is called the Xn interface, and the interface between base stations and the core network is called the NG interface. In a converged network, NTN nodes and terrestrial nodes can achieve interoperability and collaboration using these interfaces.

[0171] Furthermore, satellites serving as network devices may transmit ephemeris information so that a recipient of the ephemeris information (e.g., a terminal device, a base station thereon, or another satellite) can determine information related to the satellite's orbit based on the ephemeris information. As an example implementation, the ephemeris information may include one or more items of information listed in Table 1 below. Alternatively, the terminal device may obtain one or more items of information listed in Table 1 through preconfiguration.

[0172] Table 1

[0173] It should be noted that in practical applications, the last parameter in Table 1 is often p It is replaced by the true anomaly expression, and its function is the same, as shown in Table 2.

[0174] Table 2

[0175] Taking 5G as an example, a 5G satellite communication system architecture is shown in Figure 4. Ground-based terminal devices access the network via the 5G new air interface. 5G base stations are deployed on satellites and connected to the ground core network via wireless links. Wireless links also exist between satellites, enabling signaling exchanges and user data transmission between base stations. The devices and interfaces in Figure 4 are described below:

[0176] 5G core network: Provides services such as user access control, mobility management, session management, user security authentication, and billing. It consists of multiple functional units, which can be divided into control plane and data plane functional entities. The access and mobility management function (AMF) is responsible for user access management, security authentication, and mobility management. The user plane function (UPF) is responsible for managing user plane data transmission, traffic statistics, and other functions. The session management function (SMF) is primarily responsible for session management in mobile networks, such as session establishment, modification, and release.

[0177] Ground station: responsible for forwarding signaling and service data between satellite base stations and 5G core network.

[0178] 5G New Air Interface: The wireless link between the terminal and the base station.

[0179] Xn interface: The interface between 5G base stations, mainly used for signaling interactions such as switching.

[0180] NG interface: The interface between the 5G base station and the 5G core network, which mainly interacts with the core network's non-access stratum (NAS) signaling and user service data.

[0181] The network devices in a terrestrial network communication system and the satellites in an NTN communication system can be collectively considered network devices. The device used to implement the functions of the network device can be a network device; it can also be a device capable of supporting the network device in implementing the functions, such as a chip system, which can be installed in the network device. The following description of the technical solutions provided by the embodiments of the present application uses the example of a satellite as the device used to implement the functions of the network device. It will be understood that when the methods provided by the embodiments of the present application are applied to a terrestrial network communication system, the actions performed by the satellite can be applied to a base station or network device for execution.

[0182] In the embodiments of the present application, the device for realizing the function of the terminal device may be a terminal device; or it may be a device capable of supporting the terminal device to realize the function, such as a chip system, which may be installed in the terminal device. In the embodiments of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described by taking the case where the device for realizing the function of the terminal device is a terminal or UE as an example.

[0183] In addition, the above-mentioned satellites can be geostationary satellites, non-geostationary satellites, artificial satellites, low-orbit satellites, medium-orbit satellites, high-orbit satellites, etc., which are not specifically limited in this application.

[0184] The above content introduces various scenarios of wireless communication involved in this application. It should be understood that the above content is only an exemplary description of the scenarios in which this application can be applied. This application can also be applied to other application scenarios, which are not limited here. The following will introduce the wireless communication process involved in this application.

[0185] In the communication system shown in Figure 1, the signal that the network device can send (for example, the signal carries configuration information / configuration signaling, etc.) can configure communication resources. Among them, the communication resources may include the communication resources of the network device, as well as the communication resources of any adjacent network devices, so that the receiver of the signal can determine the corresponding communication resources based on the signal. For example, when the receiver of the signal is a terminal device, the terminal device can obtain network services based on the communication resources. Generally, taking the network device as a ground base station as an example, the ground base station and other adjacent ground base stations are generally fixed somewhere on the ground, that is, the relative positions between different ground base stations are generally unchanged. To this end, network management personnel can make the communication resources indicated by different signals sent by different ground base stations for the same communication area different (for example, the communication resources may include time domain resources, frequency domain resources, etc.) through prior network planning, so as to reduce communication interference of terminal devices in the same communication area.

[0186] However, in the communication systems shown in Figures 2a / 2b / 3a / 3b / 4, the network devices may not be fixed to a specific location on the ground. For example, the network devices may be low-orbit satellites, medium-orbit satellites, or high-orbit satellites. In this case, due to the high-speed movement of the network devices themselves, the location of the network devices may change frequently. This results in different signals sent by different network devices in the same communication area indicating the same communication resources, which increases the possibility of communication interference and thus affects communication efficiency.

[0187] To address the above-mentioned issues, the present application provides a communication method and related devices for reducing the possibility of communication interference between signals of different network devices, thereby improving communication efficiency. A detailed description will be given below with reference to the accompanying drawings.

[0188] Please refer to FIG5 , which is a schematic diagram of an implementation of the communication method provided in this application. The method includes the following steps.

[0189] It should be noted that, in FIG5 , the method is illustrated by taking the terminal device and the network device as the execution subjects of the interaction diagram as an example, but the present application does not limit the execution subjects of the interaction diagram. For example, the execution subject of S501-S502 in FIG5 and the corresponding implementation is the terminal device, and the execution subject may also be a chip, chip system, or processor that supports the terminal device to implement the method, or a logic module or software that can implement all or part of the terminal device functions. The network device in S501-S502 in FIG5 and the corresponding implementation may also be replaced by a chip, chip system, or processor that supports the network device to implement the method, or a logic module or software that can implement all or part of the network device functions. Exemplarily, the terminal device may be a UE, an on-board device, a terminal chip, a ground station, etc., and the network device may be the first network device or the second network device described later, for example, the network device may be a geostationary satellite, a non-geostationary satellite, an artificial satellite, a low-orbit satellite, a medium-orbit satellite, and a high-orbit satellite, etc.

[0190] S501. A network device sends first information, and correspondingly, a terminal device receives the first information, wherein the first information is used to indicate a track area in which the first network device communicates.

[0191] S502. The terminal device sends second information, and the network device receives the second information. Upon determining that the first network device is located within the track area indicated by the first information in step S501, the terminal device sends the second information in step S502, where the second information is associated with the first network device. In other words, the network device may receive the second information when the first network device is located within the track area indicated by the first information in step S501.

[0192] It should be understood that the track area in which the first network device communicates can be understood as the track area in which the first network device is located, and the first network device has the ability to communicate. To this end, the track area in which the first network device communicates can be replaced by: the track area in which the first network device can communicate, the track area in which the first network device is allowed to communicate, etc.

[0193] It should be understood that when the first network device is a satellite, the orbit of the satellite can be a closed curve formed by an approximately circular / elliptical figure formed by the movement around the earth. Due to the rotation of the earth, an orbit of the satellite passes over the earth to form an arc surface (or an approximate arc surface). The orbit area of ​​the satellite's communication can be greater than or equal to the arc surface, and the satellite's movement speed is generally greater than the movement speed of the terminal device. For this reason, during the movement of the satellite, when the arc surface covers the terminal device or the terminal device is located in the area where the arc surface is projected on the ground, the satellite can communicate with the terminal device or the communication quality between the satellite and the terminal device is better; on the contrary, when the arc surface does not cover the terminal device or the terminal device is located outside the area where the arc surface is projected on the ground, the satellite may not be able to communicate with the terminal device or the communication quality between the satellite and the terminal device is poor. Accordingly, in the above technical solution, the orbit area of ​​the first network device communication can be understood as the arc surface area, or the area where the arc surface area is projected on the ground, or the three-dimensional space area between the arc surface area and the projection.

[0194] Optionally, at different times, the track area in which one or more network devices on the same track communicate can be the same. In the above technical solution, the first information can be used to indicate the track area in which one or more network devices on the track where the first network device is located communicate. Thus, when the terminal device determines that any of the one or more network devices on the track where the first network device is located is located within the track area, the terminal device can determine that it can communicate with the network device on the track where the first network device is located, and then send the second information associated with the first network device in step S502.

[0195] Optionally, at different moments, the orbital areas for communication between different network devices located on different tracks may be different. For example, the orbital areas for communication between different network devices located on different tracks may be completely different (i.e., completely non-overlapping), or the orbital areas for communication between different network devices located on different tracks may partially overlap. Accordingly, for a terminal device, the angular intervals for communication between different network devices located on different tracks are different. Thus, the terminal device can communicate with network devices on different tracks through different communication angular intervals, and when different network devices located on different tracks use the same communication resources, interference can also be reduced.

[0196] Optionally, when different network devices can interact / negotiate with each other, these different network devices can be referred to as network devices of the same system, for example, these different network devices can be network devices of the same operator. In addition, when different network devices are not allowed to interact / negotiate with each other, these different network devices can be referred to as network devices of different systems, for example, these different network devices can be network devices of different operators.

[0197] In the above technical solution, the network device that sends the first information to the terminal device in step S501 can be the first network device, or it can be other network devices in the same system as the first network device, or it can be other network devices in a different system from the first network device, which is not limited here.

[0198] Optionally, the first information may be information sent by broadcasting, for example, the first information may include a synchronization signal block (synchronization signal / physical broadcast channel block, SS / PBCH block, SS / PBCH block or SSB), a system information block (SIB), etc.

[0199] It should be noted that before step S501, the network device can determine the first information in a variety of ways. For example, the network device can determine the first information through pre-configuration. Alternatively, the network device can obtain the first information through configuration of other network devices (such as core network devices or other access network devices, etc.), or the network device can determine the first information based on the signals of other devices (such as terminal devices or network devices) detected / perceived after detecting / perceiving the signals of other devices, which are not limited here.

[0200] In one implementation example, the network device may receive sixth information from the terminal device, where the sixth information indicates a position interval range between tracks and / or an angle interval range within a track with which the network device may communicate. Thus, the network device may use the sixth information sent by the terminal device as one of the bases for determining the track area indicated by the first information, enabling the network device to communicate with the terminal device within the position interval range between tracks and / or the angle interval range within a track with which the terminal device desires to communicate.

[0201] In another implementation example, the network device may receive seventh information from another network device, where the seventh information indicates a position interval range between tracks and / or an angle interval range within a track with which the network device may communicate. Thus, the network device may use the seventh information sent by the other network device as one of the bases for determining the track area indicated by the first information, enabling the network device to communicate with the terminal device within the position interval range between tracks and / or the angle interval range within a track with which the other network device desires to communicate, thereby enabling interaction between different network devices to avoid mutual interference.

[0202] In a possible implementation, the first information received by the terminal device in step S501 may indicate the track area of ​​the first network device in various implementations, which will be described below with reference to some implementation examples.

[0203] Implementation method 1: In step S501, the track area indicated by the first information includes a position interval range between tracks.

[0204] In implementation method 1, the arc formed by the track area in which the first network device communicates can be characterized by the position interval between the tracks in the tangent direction of the track's running direction. Accordingly, the track area indicated by the first information can include the position interval range between the tracks. That is, the terminal device can determine the position interval range between the tracks in which the first network device communicates based on the first information. Subsequently, the terminal device can determine whether the first network device is located within the track area based on the position of the first network device and the position interval range between the tracks.

[0205] In a possible implementation of implementation method one, the position interval range between the orbits includes a position interval start point and a position interval end point, and the first information includes an offset of the orbital equatorial angle corresponding to the position interval start point at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the position interval end point at a reference time compared to the reference point angle. Specifically, in the case where the orbital area includes the position interval range between the orbits, the first information may include an offset of the orbital equatorial angle corresponding to the position interval start point and / or an offset of the orbital equatorial angle at the position interval end point compared to the reference point angle, so that the terminal device can determine the position interval range between the orbits of the first network device based on the offset.

[0206] It can be understood that implementation method one can be applied to scenarios with constellation designs with a large number of orbits, wherein the position interval range between orbits indicated by the first information can be used to characterize an arc surface in the tangential direction of the orbital movement direction. To this end, the position interval range can indicate the communication range of satellites on multiple orbits on the arc surface.

[0207] For example, the reference point angle may include Greenwich longitude, 180° east longitude, or 90° west longitude.

[0208] Exemplarily, the reference moment may include the current moment, a moment before the current moment and differing from the current moment by a preset time length, or a moment after the current moment and differing from the current moment by a preset time length, etc.

[0209] Optionally, in implementation method one, the reference point angle may be a reference point angle pre-configured by a standard or protocol, or the network device may indicate the reference point angle to the terminal device through configuration, which is not limited here.

[0210] Optionally, in implementation mode 1, the first information may also indicate the position interval range between the tracks in other ways, for example, the first information may carry the position information (or the index of the position information) of the starting point of the position interval and / or the end point of the position interval. For example, the position information may be indicated by longitude and latitude coordinates; for another example, the position information may be indicated by longitude and latitude coordinates and altitude.

[0211] Implementation method 2: in step S501, the track area indicated by the first information includes an angle interval range within the track.

[0212] In implementation method 2, the arc formed by the track area in which the first network device communicates can be characterized by an angular range within the track in the direction of track operation. Accordingly, the track area indicated by the first information can include the angular range within the track. That is, the terminal device can determine the angular range within the track in which the first network device communicates based on the first information. Subsequently, the terminal device can determine whether the first network device is located within the track area based on the position of the first network device and the angular range within the track.

[0213] In one possible implementation of the second implementation, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to the reference point. Specifically, when the track region includes an angle interval range within the track, the first information may include an offset of the angle interval start point and / or the angle interval end point compared to the reference point, so that the terminal device can determine the angle interval within the track of the first network device based on the offset.

[0214] It can be understood that implementation method 2 can be applied to the scenario of constellation design with a large number of satellites in the orbit, wherein the angle interval range in the orbit indicated by the first information can be used to characterize the arc surface in the direction of orbital movement. To this end, the position interval range can indicate the communication range of different satellites in an orbit on the arc surface.

[0215] Exemplarily, the reference point may include the ascending node of the orbit, the descending node of the orbit, the highest latitude position passed by the orbit, etc.

[0216] As an implementation example, as shown in FIG6 , in implementation method 2, the reference point may be the ascending node of the orbit of the first network device, and the first information may include the offset of the starting point of the interval compared to the reference point (denoted as θ0), and the offset of the end point of the interval compared to the reference point (denoted as θ1). In other words, for the terminal device, based on the first information, it can be determined that on the satellite orbit of the first network device, the angle interval range within the orbit indicated by θ0 and θ1 is the angle interval range within the communication (or communicable) orbit of the first network device, and when the terminal device determines that the position of the first network device is within the angle interval range within the orbit, the terminal device can send the second information associated with the first network device in step S502.

[0217] Optionally, in the second implementation, the reference point may be a reference point pre-configured by a standard or protocol, or the network device may indicate the reference point to the terminal device through configuration, which is not limited here.

[0218] Optionally, in implementation mode 2, the first information may also indicate the angular interval range within the track in other ways, for example, the first information may carry the location information (or index of the location information) of the interval start point and / or the interval end point. For example, the location information may be indicated by latitude and longitude coordinates and a corresponding timestamp; for another example, the location information may be indicated by latitude and longitude coordinates and an altitude.

[0219] Implementation method three: in step S501, the track area indicated by the first information includes a position interval range between tracks and an angle interval range within a track.

[0220] In implementation method three, the track area indicated by the first information may include both the position interval range between tracks and the angular interval range within a track. That is, the terminal device may determine the position interval range between tracks and the angular interval range within a track with which the first network device communicates based on the first information. Subsequently, the terminal device may determine whether the first network device is located within the track area based on the position interval range between the first network device and the track, as well as the angular interval range within the track.

[0221] As an implementation example, as shown in the diagram on the right side of Figure 7 containing multiple dots, the dots represent the location of the satellite at a certain moment. The dots in the same line are understood as satellites in the same orbit, and the dots in different lines are understood as satellites in different orbits. Among them, the orbit of the satellite can be a closed curve surrounded by an approximately circular / elliptical figure formed by the movement around the earth. Due to the rotation of the earth, one orbit of the satellite passes over the earth to form an arc surface (or an approximate arc surface) in the shaded part shown in Figure 7. The orbit area of ​​the satellite's communication can be greater than or equal to the arc surface, and the satellite's movement speed is generally greater than the movement speed of the terminal device. For this reason, during the movement of the satellite, when the arc surface covers the terminal device or the terminal device is located in the area where the arc surface is projected on the ground, the satellite can communicate with the terminal device or the communication quality between the satellite and the terminal device is better; on the contrary, when the arc surface does not cover the terminal device or the terminal device is located outside the area where the arc surface is projected on the ground, the satellite may not be able to communicate with the terminal device or the communication quality between the satellite and the terminal device is poor. Correspondingly, in the above technical solution, the track area for communication of the first network device can be understood as the arc surface area, or the area where the arc surface area is projected on the ground, or the three-dimensional space area between the arc surface area and the projection.

[0222] In implementation method 1, the track area indicated by the first information includes a position interval range between tracks (i.e., the range of the current track ascending node point [r0, r1] within which communication is permitted in the diagram). For a terminal device, the terminal device can determine a communicable interval of the communication area of ​​the first network device in a tangential direction to the track running direction based on the position interval range. Furthermore, if the terminal device determines that the position of the first network device is within the angular interval [θ0, θ1] within the track, the terminal device can determine in step S502 whether the position of the first network device is within the track area within which the first network device communicates.

[0223] In implementation method 2, the track area indicated by the first information includes an angular interval within the track (i.e., the communication-allowed track angle range [θ0, θ1] shown in the figure). For a terminal device, the terminal device can determine the communicable interval of the communication area of ​​the first network device in the track running direction based on the angular interval. Moreover, if the terminal device determines that the position of the first network device is within the ascending node range [r0, r1] of the track, the terminal device can determine in step S502 that the position of the first network device is within the track area for communication with the first network device.

[0224] In implementation method three, the track area indicated by the first information includes a position interval range between tracks and an angle range within the track (i.e., the current track ascending node range [r0, r1] within which communication is permitted, and the track angle range [θ0, θ1] within which communication is permitted, as shown in the figure). In other words, for a terminal device, if the terminal device determines that the position of the first network device is within the track angle range [θ0, θ1] and within the track ascending node range [r0, r1], the terminal device can determine in step S502 that the position of the first network device is within the track area within which the first network device communicates.

[0225] It is understandable that implementation method three can be applied to scenarios where constellation design has a large number of orbits and / or scenarios where constellation design has a large number of satellites in an orbit.

[0226] It should be noted that, in implementation method three, the specific implementation of the position interval range between tracks can refer to the description of implementation method one above, and the specific implementation of the angle interval range within the track can refer to the description of implementation method two above.

[0227] In one possible implementation, before step S502, the method may further include: the terminal device receiving third information, the third information being used to indicate a validation condition of the track area; and upon determining that the first network device is located in the track area, the terminal device sending the second information includes: upon determining that the first network device is located in the track area and satisfies the validation condition, the terminal device sending the second information. Specifically, the terminal device may further determine the validation condition of the track area based on the received third information, and upon determining that the first network device is located in the track area and satisfies the validation condition, the terminal device determines that it can communicate with the first network device, and thereby sends the second information associated with the first network device.

[0228] Optionally, the third information and the first information are carried in the same message (for example, the first information includes the third information, or the third information includes the first information), or in different messages, which is not limited here.

[0229] Optionally, the terminal device may obtain the third information in a preconfigured or predefined manner.

[0230] In one possible implementation, when it is determined that the validation condition is not met, the method further includes: the terminal device sending fourth information, where the fourth information is used to request an update of the first information. Specifically, after the terminal device determines the validation condition of the track area based on the received third information, if the terminal device determines that the validation condition is not met, the terminal device may further send fourth information for requesting an update of the first information, so that the network device can subsequently send updated first information based on the request, and update the track area of ​​communication of the first network device indicated by the first information through the updated first information.

[0231] Optionally, the validation condition includes a valid time and / or a valid geographic location. The validation condition indicated by the third information may include a valid time and / or a valid geographic location, enabling the terminal device to determine whether the validation condition is satisfied based on the current time and / or current geographic location. Furthermore, if the terminal device determines that the validation condition is satisfied, the terminal device sends the second information associated with the first network device, in order to increase the likelihood that the second information will be successfully received by the network device.

[0232] In an implementation example, when the effectiveness condition indicated by the third information includes the time of effectiveness, the third information may include one or more of the starting time of effectiveness, the duration of effectiveness, and the end time of effectiveness, or the third information may include the index value corresponding to one or more of the starting time of effectiveness, the duration of effectiveness, and the end time of effectiveness.

[0233] In another implementation example, when the effectiveness condition indicated by the third information includes the effective geographical location, the third information may include one or more of the absolute coordinate value of the geographical location, the relative coordinate value relative to the reference point, and the area indication information relative to the reference point (for example, when the area is a circular area, the indication information may include the radius or diameter of the circular area; for example, when the area is a rectangular area, the indication information may include the side length of the rectangle); or, the third information may include the absolute coordinate value of the geographical location, the relative coordinate value relative to the reference point, and the index value corresponding to one or more of the area indication information relative to the reference point.

[0234] In a possible implementation, the terminal device may send the second information in step S502 in a variety of ways, which will be described below with reference to some implementation examples.

[0235] Implementation example one: in step S502, the terminal device sends the second information to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0236] In implementation example one, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can determine that it can communicate with the first network device, and then the terminal device can send at least one of the above-mentioned information to the first network device to realize at least one of the terminal device's measurement, initial access, switching access and data transmission of the first network device.

[0237] Exemplarily, the cell measurement information of the terminal device for the first network device can be used to indicate the measurement result of the terminal device on the signal of the cell of the first network device. For example, the signal of the cell may include SSB, channel state information reference signal (CSI-RS), etc. The measurement result of the signal of the cell may include received signal strength indication (RSSI), reference signal received power (RSRP), reference signal received quality (RSRQ), etc.

[0238] Exemplarily, the initial access information for accessing the first network device may include a random access preamble (random access preamble), message 1 (message 1, MSG1), message A (message A, MSGA), and the like.

[0239] Exemplarily, the access information used for accessing the first network device during the handover process may include a preamble.

[0240] Exemplarily, the uplink data of the terminal device may include data or control information sent on the PUSCH or PUCCH.

[0241] Implementation example two: in step S502, the terminal device sends the second information to the second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0242] Optionally, the second network device may be an adjacent network device of the first network device, so that the terminal device can implement at least one process of measuring the cell in the first network device, initiating switching access to the first network device, and initiating data transmission to the first network device through the process of sending the second information.

[0243] In implementation example two, when the terminal device determines that the position of the first network device is located in the track area, the terminal device can determine that it can communicate with the first network device, and then the terminal device can send at least one of the above-mentioned information to the second network device to realize at least one of the terminal device's measurement, switching access and data transmission of the first network device.

[0244] In one possible implementation, before step S502, the method further includes: the terminal device receiving fifth information (e.g., ephemeris information), where the fifth information is used to determine the position of the first network device. Specifically, the terminal device may further receive the fifth information, enabling the terminal device to determine the position of the first network device based on the fifth information, and subsequently determining whether to communicate with the first network device based on the position of the first network device and the orbital region in which the first network device communicates.

[0245] Optionally, the terminal device may determine the location of the first network device in a preconfigured manner.

[0246] Based on Figure 5 and the relevant technical solutions, the first information received by the terminal device in step S501 is used to indicate the track area for communication of the first network device. Thereafter, when the terminal device determines that the position of the first network device is located in the track area, the terminal device sends the second information associated with the first network device in step S502. In other words, after the terminal device determines the track area for communication of the network device based on the received first information, when it is determined that the position of the network device is located in the track area, the terminal device determines that it can initiate communication with the network device. Thus, by indicating the track area for communication of the network device, the terminal device can communicate when the network device is located in the track area with which the network device expects to communicate, and can avoid the terminal device from communicating when the network device is located in a track area outside the track area with which the network device expects to communicate. This can reduce the possibility of communication interference between signals of different network devices, thereby improving communication efficiency.

[0247] In addition, for a terminal device, the orbital area for network device communication may correspond to the angular interval for communication of the terminal device, i.e., the terminal device may determine the angular interval in which the network device may communicate through the orbital area of ​​the network device (e.g., the terminal device may communicate with the network device through a communication beam within the angular interval). Accordingly, in the above technical solution, by indicating the orbital area for network device communication, the terminal device may communicate based on the desired communication angular interval indicated by the network device.

[0248] As an application example, the technical solution shown in Figure 5 can be applied to the application scenario shown in Figure 8. In Figure 8, the terminal device may communicate with multiple potential satellite systems, for example, the multiple satellite systems may include the Starlink system (denoted as system 1), the Kuiper system (denoted as system 2), and the OneWeb system (denoted as system 3) shown in the figure.

[0249] As shown in Figure 8, before the technical solution shown in Figure 5 is applied, the communication process of different systems is taken as an example of the unplanned multi-layer constellation service angle area on the left side of the figure. Among them, the three satellite systems may all serve the same area to meet their respective needs for full coverage. If the beam pointing of each system is not restricted, for the terminal device, satellites of different systems in similar angle areas may communicate with different terminal devices in the same location at the same time. For example, if the service angle areas of system 1 and system 2 overlap in the figure, the two communication signals will interfere with each other. As the constellation size increases, the number of satellite beams increases, and the number of terminal devices communicating at the same time increases, the probability of the above interference will increase.

[0250] As shown in FIG8 , after the technical solution shown in FIG5 is applied, the communication process of different systems is illustrated by the planned multi-layer constellation service angle area on the right side of FIG8 . The first network device can be a network device of one of the three satellite systems. The first information indicates the implementation method of the communication area of ​​the first network device, which can establish a certain degree of agreement on the communicable angles of the satellites in each system. For terminal devices, the satellites of each system can communicate from their own non-overlapping angle ranges to reduce interference (for example, there is a certain isolation angle between different angle ranges to ensure that signals from other systems only enter the sidelobes of the beam of the current system).

[0251] In FIG. 5 and related implementations, upon determining that the first network device is located within the track area indicated by the first information, the terminal device may determine that it can communicate with the first network device, and the terminal device may send second information associated with the first network device to implement at least one of measurement, initial access, handover access, and data transmission. After the terminal device determines that it can communicate with the first network device, it may also perform other communication behaviors, which will be exemplarily described below in conjunction with the method shown in FIG. As shown in FIG. 9 , the following steps are included.

[0252] S901. A network device sends first information, and correspondingly, a terminal device receives the first information, wherein the first information is used to indicate a track area in which the first network device communicates.

[0253] It should be noted that the implementation process of step S901 may refer to the implementation process of the aforementioned step S501.

[0254] S902. The terminal device camps on the first network device. When it is determined that the first network device is located in the track area indicated by the first information in step S901, the terminal device can camp on the first network device in step S902.

[0255] Based on the technical solution shown in FIG9 , after the terminal device determines the track area for communication of the network device based on the received first information, if it is determined that the location of the network device is within the track area, the terminal device determines that it can reside on the first network device and can communicate with the network device. Thus, by indicating the track area for communication of the network device, the terminal device can reside on the network device when the network device is located in the track area with which the network device expects to communicate. This can prevent the terminal device from residing on the network device when the network device is located in a track area outside the track area with which the network device expects to communicate, and can reduce the possibility of communication interference between signals of different network devices, thereby improving communication efficiency.

[0256] It should be noted that, in the implementation shown in FIG9 , the relevant implementation process of each information can refer to the possible implementation process in FIG5 and the related embodiments, and achieve the corresponding technical effects. For example, in the implementation shown in FIG9 , the implementation process of the first information can refer to the implementation process of the first information in FIG5 and the related embodiments. For another example, in the implementation shown in FIG9 , the terminal device can also exchange other information (including second information, third information, fourth information, fifth information, or sixth information, etc.) with the network device, and the implementation process of the other information can refer to the implementation process in FIG5 and the related embodiments.

[0257] Referring to Figure 10, an embodiment of the present application provides a communication device 1000. The communication device 1000 can implement the functions of the terminal device (or network device) in the above method embodiment, and thus can also achieve the beneficial effects of the above method embodiment. In the embodiment of the present application, the communication device 1000 can be a terminal device (or network device), or it can be an integrated circuit or component inside the terminal device (or network device), such as a chip. The following embodiments are described using the communication device 1000 as an example of a terminal device or network device.

[0258] In one possible implementation, when the device 1000 is used to execute the method executed by the terminal device in the aforementioned embodiment, the device 1000 includes a processing unit 1001 and a transceiver unit 1002; the transceiver unit 1002 is used to receive first information, and the first information is used to indicate the track area of ​​communication of the first network device; when the processing unit 1001 determines that the position of the first network device is located in the track area, the transceiver unit 1002 is also used to send second information, and the second information is associated with the first network device.

[0259] In a possible implementation, the track area includes a position interval range between tracks.

[0260] In one possible implementation, the position interval range between the orbits includes a position interval start point and a position interval end point, and the first information includes an offset of the orbital equatorial angle corresponding to the starting point of the position interval at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the end point of the position interval at a reference time compared to the reference point angle.

[0261] In a possible implementation, the track area includes an angle interval range within the track.

[0262] In one possible implementation, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

[0263] In one possible implementation, the transceiver unit 1002 is also used to receive third information, which is used to indicate the effectiveness conditions of the track area; when the processing unit 1001 determines that the position of the first network device is located in the track area, the transceiver unit 1002 is used to send the second information including: when the processing unit 1001 determines that the position of the first network device is located in the track area and meets the effectiveness conditions, the transceiver unit 1002 is used to send the second information.

[0264] In a possible implementation, when the processing unit 1001 determines that the validation condition is not met, the transceiver unit 1002 is further configured to send fourth information, where the fourth information is used to request an update of the first information.

[0265] In a possible implementation, the validity condition includes the validity time and / or the validity geographical location.

[0266] In one possible implementation, the transceiver unit 1002 is used to send the second information, including: the transceiver unit 1002 is used to send the second information to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0267] In one possible implementation, the transceiver unit 1002 is used to send the second information, including: the transceiver unit 1002 is used to send the second information to the second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0268] In a possible implementation, the transceiver unit 1002 is further configured to receive fifth information, where the fifth information is used to determine the location of the first network device.

[0269] In one possible implementation, when the device 1000 is used to execute the method executed by the terminal device in the aforementioned embodiment, the device 1000 includes a processing unit 1001 and a transceiver unit 1002; the transceiver unit 1002 is used to receive first information, and the first information is used to indicate the track area of ​​communication of the first network device; when the processing unit 1001 determines that the position of the first network device is located in the track area, the processing unit 1001 determines that the terminal device resides in the first network device.

[0270] In one possible implementation, when the device 1000 is used to execute the method executed by the network device in the aforementioned embodiment, the device 1000 includes a processing unit 1001 and a transceiver unit 1002; the processing unit 1001 is used to determine first information, and the first information is used to indicate the track area of ​​communication of the first network device; the transceiver unit 1002 is used to send the first information.

[0271] In a possible implementation, the track area includes a position interval range between tracks.

[0272] In one possible implementation, the position interval range between the orbits includes a position interval start point and a position interval end point, and the first information includes an offset of the orbital equatorial angle corresponding to the starting point of the position interval at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the end point of the position interval at a reference time compared to the reference point angle.

[0273] In a possible implementation, the track area includes an angle interval range within the track.

[0274] In one possible implementation, the angle interval within the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

[0275] In a possible implementation, when the processing unit 1001 determines that the position of the first network device is located in the track area, the transceiver unit 1002 is further configured to receive second information, where the second information is associated with the first network device.

[0276] In one possible implementation, the transceiver unit 1002 is also used to send third information, which is used to indicate the effectiveness conditions of the track area; when the processing unit 1001 determines that the position of the first network device is located in the track area, the transceiver unit 1002 is used to receive the second information, including: when the processing unit 1001 determines that the position of the first network device is located in the track area and meets the effectiveness conditions, the transceiver unit 1002 is used to receive the second information.

[0277] In a possible implementation, the transceiver unit 1002 is further configured to receive fourth information, where the fourth information is used to request updating of the first information.

[0278] In a possible implementation, the validity condition includes the validity time and / or the validity geographical location.

[0279] In one possible implementation, the device is applied to the first network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, initial access information for accessing the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0280] In a possible implementation, the apparatus is applied to a second network device, and the second information includes at least one of the following: cell measurement information of the terminal device on the first network device, switching access information for accessing the first network device, and uplink data of the terminal device.

[0281] In a possible implementation, the transceiver unit 1002 is further configured to send fifth information, where the fifth information is used to determine the location of the first network device.

[0282] It should be noted that, for details of the information execution process and other contents of the units of the above-mentioned communication device 1000, please refer to the description in the method embodiment shown above in this application, and will not be repeated here.

[0283] Please refer to Fig. 11, which is another schematic structural diagram of a communication device 1100 provided in this application. The communication device 1100 at least includes an input and output interface 1102. The communication device 1100 may be a chip or an integrated circuit.

[0284] Optionally, the communication device further includes a logic circuit 1101 .

[0285] The transceiver unit 1002 shown in FIG10 may be a communication interface, which may be the input / output interface 1102 in FIG11 , which may include an input interface and an output interface. Alternatively, the communication interface may be a transceiver circuit, which may include an input interface circuit and an output interface circuit.

[0286] Optionally, the input / output interface 1102 is configured to receive first information indicating a track area in which the first network device communicates; when the logic circuit 1101 determines that the first network device is located within the track area, the input / output interface 1102 is further configured to send second information associated with the first network device. The logic circuit 1101 and the input / output interface 1102 may also perform other steps performed by the terminal device in the aforementioned embodiment and achieve corresponding beneficial effects, which will not be further described here.

[0287] Optionally, the logic circuit 1101 is configured to determine first information, where the first information is used to indicate a track area for communication with the first network device; and the input / output interface 1102 is configured to send the first information. The logic circuit 1101 and the input / output interface 1102 may also perform other steps performed by the network device in the aforementioned embodiment and achieve corresponding beneficial effects, which will not be further described here.

[0288] Optionally, the input / output interface 1102 is configured to receive first information indicating a track area in which the first network device communicates; when the logic circuit 1101 determines that the first network device is located in the track area, the logic circuit 1101 determines that the terminal device resides on the first network device. The logic circuit 1101 and the input / output interface 1102 may also perform other steps performed by the terminal device in any of the aforementioned embodiments and achieve corresponding beneficial effects, which will not be further described herein.

[0289] In a possible implementation, the processing unit 1001 shown in FIG10 may be the logic circuit 1101 in FIG11 .

[0290] Optionally, the logic circuit 1101 may be a processing device, and the functions of the processing device may be partially or entirely implemented by software. The functions of the processing device may be partially or entirely implemented by software.

[0291] Optionally, the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and / or steps in any one of the method embodiments.

[0292] Alternatively, the processing device may include only a processor. A memory for storing the computer program is located outside the processing device, and the processor is connected to the memory via circuits / wires to read and execute the computer program stored in the memory. The memory and processor may be integrated or physically separate.

[0293] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processor units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0294] Please refer to Figure 12, which shows the communication device 1200 involved in the above-mentioned embodiments provided in an embodiment of the present application. The communication device 1200 can specifically be a communication device serving as a terminal device in the above-mentioned embodiments. The example shown in Figure 12 is that the terminal device is implemented through the terminal device (or a component in the terminal device).

[0295] Herein, a possible logical structure diagram of the communication device 1200 is shown. The communication device 1200 may include but is not limited to at least one processor 1201 and a communication port 1202 .

[0296] Further optionally, the device may also include at least one of a memory 1203 and a bus 1204. In an embodiment of the present application, the at least one processor 1201 is used to control and process the actions of the communication device 1200.

[0297] In addition, the processor 1201 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Those skilled in the art will clearly understand that for the sake of convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0298] It should be noted that the communication device 1200 shown in Figure 12 can be specifically used to implement the steps implemented by the terminal device in the aforementioned method embodiment and achieve the corresponding technical effects of the terminal device. The specific implementation methods of the communication device shown in Figure 12 can refer to the description in the aforementioned method embodiment and will not be repeated here.

[0299] Please refer to Figure 13, which is a structural diagram of the communication device 1300 involved in the above-mentioned embodiments provided in an embodiment of the present application. The communication device 1300 can specifically be a communication device as a network device in the above-mentioned embodiments. The example shown in Figure 13 is that the network device is implemented through the network device (or a component in the network device), wherein the structure of the communication device can refer to the structure shown in Figure 13.

[0300] The communication device 1300 includes at least one processor 1311 and at least one network interface 1314. Further optionally, the communication device also includes at least one memory 1312, at least one transceiver 1313 and one or more antennas 1315. The processor 1311, the memory 1312, the transceiver 1313 and the network interface 1314 are connected, for example, via a bus. In an embodiment of the present application, the connection may include various interfaces, transmission lines or buses, etc., which are not limited in this embodiment. The antenna 1315 is connected to the transceiver 1313. The network interface 1314 is used to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 1314 may include a network interface between the communication device and the core network device, such as an S1 interface, and the network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as an X2 or Xn interface.

[0301] Processor 1311 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process software program data, for example, to support the communication device in performing the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit. The baseband processor is primarily used to process communication protocols and communication data, while the central processing unit is primarily used to control the entire terminal device, execute software programs, and process software program data. Processor 1311 in Figure 13 may integrate the functions of both a baseband processor and a central processing unit. Those skilled in the art will appreciate that the baseband processor and the central processing unit may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to accommodate different network standards, multiple central processing units to enhance its processing capabilities, and various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored in memory as a software program, which is executed by the processor to implement the baseband processing functionality.

[0302] The memory is primarily used to store software programs and data. Memory 1312 can exist independently and be connected to processor 1311. Alternatively, memory 1312 can be integrated with processor 1311, for example, within a single chip. Memory 1312 can store program code for executing the technical solutions of the embodiments of the present application, and execution is controlled by processor 1311. The various computer program codes executed can also be considered drivers for processor 1311.

[0303] Figure 13 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device. The memory may be a storage element on the same chip as the processor, i.e., an on-chip storage element, or an independent storage element, which is not limited in the embodiments of the present application.

[0304] The transceiver 1313 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal. The transceiver 1313 can be connected to the antenna 1315. The transceiver 1313 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1315 can receive radio frequency signals. The receiver Rx of the transceiver 1313 is used to receive the radio frequency signal from the antenna, convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or digital intermediate frequency signal to the processor 1311 so that the processor 1311 can further process the digital baseband signal or digital intermediate frequency signal, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 1313 is also used to receive a modulated digital baseband signal or digital intermediate frequency signal from the processor 1311, convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and transmit the radio frequency signal through one or more antennas 1315. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal. The order of the up-mixing and digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as digital signals.

[0305] The transceiver 1313 may also be referred to as a transceiver unit, a transceiver, a transceiver device, etc. Optionally, a device in the transceiver unit that implements a receiving function may be referred to as a receiving unit, and a device in the transceiver unit that implements a transmitting function may be referred to as a transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0306] It should be noted that the communication device 1300 shown in Figure 13 can be specifically used to implement the steps implemented by the network device in the aforementioned method embodiment, and to achieve the corresponding technical effects of the network device. The specific implementation method of the communication device 1300 shown in Figure 13 can refer to the description in the aforementioned method embodiment, and will not be repeated here one by one.

[0307] An embodiment of the present application also provides a computer-readable storage medium for storing one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in the possible implementation method of the communication device (such as a terminal device or a network device) in the above embodiment.

[0308] An embodiment of the present application also provides a computer program product (or computer program). When the computer program product is executed by the processor, the processor executes the method of the possible implementation method of the above-mentioned communication device (such as a terminal device or a network device).

[0309] An embodiment of the present application also provides a chip system, which includes at least one processor for supporting a communication device to implement the functions involved in the possible implementation methods of the above-mentioned communication device. Optionally, the chip system also includes an interface circuit, which provides program instructions and / or data to the at least one processor. In one possible design, the chip system may also include a memory, which is used to store the necessary program instructions and data for the communication device. The chip system can be composed of chips, or it can include chips and other discrete devices, wherein the communication device can specifically be a terminal device or a network device in the aforementioned method embodiment.

[0310] An embodiment of the present application also provides a communication system, and the network system architecture includes the terminal device and network device in any of the above embodiments.

[0311] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0312] 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, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0313] In addition, the functional units in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the contributing part or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

Claims

1. A communication method, characterized in that: include: receiving first information, wherein the first information is used to indicate a track area for communication of a first network device; When it is determined that the position of the first network device is located in the track area, second information is sent, where the second information is associated with the first network device.

2. The method according to claim 1, characterized in that The track area includes a position interval range between tracks.

3. The method according to claim 2, characterized in that The position interval range between the orbits includes a starting point and an end point of the position interval, and the first information includes an offset of the orbital equatorial angle at the starting point of the position interval at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the end point of the position interval at a reference time compared to the reference point angle.

4. The method according to any one of claims 1 to 3, characterized in that: The track area includes an angle interval range within the track.

5. The method according to claim 4, characterized in that The angle interval in the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Third information is received, where the third information is used to indicate a validation condition of the track area.

7. The method according to any one of claims 1 to 6, wherein when determining that the location of the first network device is located in the track area, sending the second information comprises: When it is determined that the position of the first network device is located in the track area and meets the validity condition, the second information is sent.

8. The method according to claim 7, characterized in that When it is determined that the validation condition is not met, the method further includes: Send fourth information, where the fourth information is used to request updating of the first information.

9. The method according to any one of claims 6 to 8, characterized in that: The effectiveness conditions include the effective time and / or the effective geographical location.

10. The method according to any one of claims 1 to 9, characterized in that: The sending of the second information comprises: Sending the second information to the first network device, where the second information includes at least one of the following: The cell measurement information of the terminal device on the first network device, the initial access information used to access the first network device, the switching access information used to access the first network device, and the uplink data of the terminal device.

11. The method according to any one of claims 1 to 10, characterized in that: The sending of the second information comprises: Sending the second information to the second network device, where the second information includes at least one of the following: The cell measurement information of the terminal device on the first network device, the switching access information used to access the first network device, and the uplink data of the terminal device.

12. The method according to any one of claims 1 to 11, characterized in that: The method further comprises: Fifth information is received, where the fifth information is used to determine a location of the first network device.

13. A communication method, characterized in that: include: Determining first information, wherein the first information is used to indicate a track area for communication of the first network device; Send the first information to the terminal device.

14. The method according to claim 13, characterized in that The track area includes a position interval range between tracks.

15. The method according to claim 14, characterized in that The position interval range between the orbits includes a starting point and an end point of the position interval, and the first information includes an offset of the orbital equatorial angle corresponding to the starting point of the position interval at a reference time compared to the reference point angle, and / or an offset of the orbital equatorial angle at the end point of the position interval at the reference time compared to the reference point angle.

16. The method according to any one of claims 13 to 15, characterized in that The track area includes an angle interval range within the track.

17. The method according to claim 16, characterized in that The angle interval in the track includes an angle interval start point and an angle interval end point, and the first information includes an offset of the angle interval start point compared to a reference point, and / or an offset of the angle interval end point compared to a reference point.

18. The method according to any one of claims 13 to 17, characterized in that The method further comprises: When it is determined that the location of the first network device is located in the track area, second information is received, the second information being associated with the first network device.

19. The method according to claim 18, characterized in that When determining that the location of the first network device is located in the track area, receiving the second information includes: When it is determined that the location of the first network device is located in the track area and meets the validation condition, the second information is received.

20. The method according to any one of claims 13 to 19, characterized in that When it is determined that the validation condition is not met, the method further includes: Fourth information is received, where the fourth information is used to request updating of the first information.

21. The method according to claim 19 or 20, characterized in that The effectiveness conditions include the effective time and / or the effective geographical location.

22. The method according to any one of claims 13 to 21, characterized in that The method further comprises: Sending third information, where the third information is used to indicate a validation condition of the track area.

23. The method according to any one of claims 18 to 22, characterized in that: The method is applied to the first network device, and the second information includes at least one of the following: The cell measurement information of the terminal device on the first network device, the initial access information used to access the first network device, the switching access information used to access the first network device, and the uplink data of the terminal device.

24. The method according to any one of claims 18 to 22, characterized in that: The method is applied to a second network device, and the second information includes at least one of the following: The cell measurement information of the terminal device on the first network device, the switching access information used to access the first network device, and the uplink data of the terminal device.

25. The method according to any one of claims 13 to 24, characterized in that The method further comprises: Send fifth information, where the fifth information is used to determine the location of the first network device.

26. A communication device, characterized in that: A communication device, characterized in that it includes a processing unit and a transceiver unit; the processing unit and the transceiver unit are used to execute the method described in any one of claims 1 to 12.

27. A communication device, characterized in that: It comprises a processing unit and a transceiver unit; the processing unit and the transceiver unit are used to execute the method described in any one of claims 13 to 25.

28. A communication device, characterized in that: The device comprises at least one processor, wherein the at least one processor is configured to execute the program or instruction so as to enable the device to implement the method according to any one of claims 1 to 12.

29. A communication device, characterized in that: The device comprises at least one processor, wherein the at least one processor is configured to execute the program or instruction so as to enable the device to implement the method according to any one of claims 13 to 25.

30. A communication system, characterized in that: The communication system includes the communication device according to claim 26 and the communication device according to claim 27, or the communication system includes the communication device according to claim 28 and the communication device according to claim 29.

31. A computer-readable storage medium, characterized in that: The medium stores instructions, and when the instructions are executed by a computer, the method according to any one of claims 1 to 25 is implemented.

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