Communication method, communication apparatus, and communication system

Abstract

The present application provides a communication method, a communication apparatus, and a communication system. The method comprises: a first communication apparatus receives first information, the first information comprising information related to a first interference signal, the first interference signal being an interference signal to be generated by coherent transmission to be performed by a first satellite set, and the first satellite set comprising a plurality of satellites; and the first communication apparatus sends a first signal on a first resource, the first resource not overlapping with at least one of a spatial domain resource, a time domain resource or a frequency domain resource occupied by the first interference signal. Thus, the reliability of communication can be improved.

Description

Communication method, communication device and communication system

[0001] The present application claims priority to the Chinese patent application No. 202411267247.X, filed on September 10, 2024, and entitled "Communication method, communication device and communication system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and more particularly, to a communication method, a communication device and a communication system. BACKGROUND

[0003] There are two characteristics in the future development trend of satellite communication systems. One characteristic is large-scale constellation. The number of on-orbit satellites in the satellite communication system can reach nearly ten thousand, and the ground terminal can be simultaneously in the coverage range of dozens of satellites. Another characteristic is high-gain antenna. The current satellite load can support the installation of an antenna array with a size of up to 64 square meters, and a larger antenna array is expected to be realized in the future to achieve higher antenna gain and thus improve the signal-to-noise ratio.

[0004] Large-scale constellation and high-gain antenna provide a prerequisite for multiple satellites to realize cooperative transmission. However, in the case of applying multiple satellite cooperative transmission in the system, how to ensure that each transmission in the system is orderly and reliably performed is a problem to be solved at present. SUMMARY

[0005] Embodiments of the present application provide a communication method, a communication device and a communication system, which can improve communication reliability.

[0006] In a first aspect, a communication method is provided. The method can be performed by a first communication device. The first communication device can be a communication apparatus (such as a satellite, an access network device or a terminal), or the first communication device can be a component (such as a chip, a chip system, a logic circuit or software) configured to (or for) the communication apparatus. Hereinafter, the method performed by the first communication device is taken as an example for description.

[0007] The method includes: receiving, by the first communication device, first information, the first information including related information of a first interference signal, the first interference signal being an interference signal caused by coherent transmission to be performed by a first satellite set, the first satellite set including multiple satellites. The first communication device transmits a first signal on a first resource, the first resource being non-overlapping with at least one of spatial domain resources, time domain resources or frequency domain resources occupied by the first interference signal.

[0008] According to the above scheme, before the first satellite set performs the coherent transmission, a communication device can provide a second communication device with related information of an interference signal (i.e., a first interference signal) of the coherent transmission, so that the second communication device that can be interfered by the first interference signal can perform interference avoidance, thereby reducing communication interference and improving communication reliability. It is expected that orderly and reliable transmission in the communication system can be realized.

[0009] In combination with the first aspect, in some implementations of the first aspect, the first interference signal includes a beam sidelobe signal of the coherent transmission.

[0010] According to the above scheme, the first interference signal can include a beam sidelobe signal radiated by the beam sidelobe when the first satellite set performs the coherent transmission, i.e., the beam sidelobe signal radiates energy in a non-target direction, which can interfere with other communications in the direction. The first information can be used to notify the communication node communicating in the direction in advance before the coherent transmission is performed, so as to realize interference avoidance, reduce communication interference, and improve reliability. It should be understood that the present application is not limited thereto, and the first interference signal can also include a beam sidelobe signal or other interference signals of the coherent transmission.

[0011] In an implementation, the first information is from a first network element.

[0012] In one example of the implementation, the first network element is a ground device. For example, the first network element can be located on the ground, such as a ground station, or the first network element can be a ground access network device or a core network device.

[0013] In another example of the implementation, or the first network element can be a non-ground device, such as a satellite other than the first satellite set.

[0014] The first network element can realize interference coordination of multiple communication devices (including the first satellite set) through signaling interaction.

[0015] Optionally, the first information can be specifically from a second communication device, which can be the first network element, or can be a component (such as a chip or a chip, or a chip system, or a logic circuit, or software) configured in the first network element.

[0016] Exemplarily, the first network element can be configured with (or deployed with) a medium access control (MAC) scheduler, and specifically, interference coordination of multiple communication devices can be implemented by the MAC scheduler through signaling interaction. Optionally, the first information is from the first network element, including: the first information is from the MAC scheduler in the first network element. In this implementation, the first information includes related information of multiple interference signals, the multiple interference signals are respectively interference signals to be generated by coherent transmission to be performed by multiple satellite sets, the multiple interference signals include the first interference signal, and the multiple satellite sets include the first satellite set.

[0017] According to the above scheme, the first network element can obtain related information of interference signals to be generated by coherent transmission to be performed by multiple satellite sets, and inform other communication devices through the first information, so that other communication devices can determine the interference signals to be generated by coherent transmission to be performed by the multiple satellite sets through the first information, thereby realizing interference avoidance. In this way, the efficiency of coherent information acquisition of the interference signals can be improved.

[0018] In another implementation, the first information is from a first satellite in the first satellite set.

[0019] That is, the first information can be from a satellite in the first satellite set, that is, the first satellite. The first satellite can determine the interference signal to be generated by the coherent transmission, that is, the first interference signal, according to related configuration information of the coherent transmission to be performed, and thereby inform other communication devices of related information of the first interference signal, so as to realize interference avoidance and improve communication reliability.

[0020] Exemplarily, the first satellite can be a master satellite in the first satellite set, and the master satellite in a satellite set is used to control (or schedule, organize) satellites in the satellite set to perform cooperative transmission (including coherent transmission and / or non-coherent transmission).

[0021] In combination with the first aspect, in some implementations of the first aspect, the first information is broadcast information, and the first information further includes first indication information, the first indication information being used to indicate that a target receiving end of the first information is a master satellite in a satellite set, and the first communication device is a second satellite. The second satellite is a master satellite in a second satellite set.

[0022] According to the scheme, the first information can be broadcast information, and the first information can include first indication information to inform the communication device that a target receiving end of the first information is a primary satellite in the satellite set. A slave satellite in the satellite set can determine that the slave satellite is not the target receiving end according to the first indication information, so that the slave satellite can not continue to process the first information, and unnecessary power consumption of the slave satellite can be reduced. The slave satellite refers to a satellite in the satellite set except the primary satellite.

[0023] With reference to the first aspect, in some implementations of the first aspect, the first communication device is a second satellite. The second satellite is a primary satellite in a second satellite set, and the first resource is a resource used for the second satellite set to perform cooperative transmission, and the first signal is a signal sent by the second satellite performing the cooperative transmission.

[0024] According to the scheme, the primary satellite in the second satellite set can determine the first resource that can avoid the interference of the first interference signal according to the first information, such as avoiding interference from one or more of spatial domain resources, frequency domain resources, or time domain resources. In order for the second satellite set to perform cooperative transmission on the first resource, the interference received by the cooperative transmission can be reduced, and the reliability of the cooperative transmission can be improved.

[0025] With reference to the first aspect, in some implementations of the first aspect, the method further includes: the second satellite sending second information to satellites in the second satellite set except the second satellite, the second information being used to indicate the first resource.

[0026] According to the scheme, after the second satellite determines the first resource that can avoid the interference of the first interference signal, the second satellite can inform other satellites in the second satellite set, so that the satellites in the second satellite set can reach a consensus on the transmission resource (i.e., the first resource) of the cooperative transmission, and the cooperative transmission that can reduce interference can be realized.

[0027] With reference to the first aspect, in some implementations of the first aspect, the method further includes: the second satellite sending third information, the third information including related information of a second interference signal, the second interference signal being an interference signal generated by coherent transmission to be performed by the second satellite set.

[0028] According to the above scheme, the cooperative transmission of the second satellite set is coherent transmission, and before the coherent transmission of the second satellite set is performed, the second satellite can send third information, which informs other communication devices of relevant information of the second interference signal to be generated by the coherent transmission to be performed by the second satellite set. So that other communication devices can implement interference avoidance. That is, the satellite set can avoid interference according to the relevant information of the interference signal to be generated by other satellite sets, or can provide the relevant information of the interference signal to be generated by the satellite set to other communication devices so that other communication devices can implement interference avoidance, so that the communication of the satellite communication system can be orderly and reliably. The reliability of the communication system is improved.

[0029] In combination with the first aspect, in some implementations of the first aspect, the relevant information of the first interference signal includes one or more of the following information of the first interference signal:

[0030] azimuth information, energy information, frequency information, or time information.

[0031] According to the above scheme, the relevant information of the first interference signal can include one or more of the time domain, frequency domain, space domain, or energy of the first interference signal, that is, the relevant information can directly indicate the resource where the first interference signal exists, so that other communication devices can implement interference avoidance based on the relevant information.

[0032] Exemplarily, the azimuth information is used to indicate one or more of the following:

[0033] the beam position covered by the first interference signal, the geographical area covered by the first interference signal, or the coordinates of the direction of the first interference signal in a global coordinate system.

[0034] In combination with the first aspect, in some implementations of the first aspect, the relevant information of the first interference signal is used to determine the first interference signal, and the relevant information of the first interference signal is used to indicate one or more of the following parameters of the coherent transmission to be performed by the first satellite set:

[0035] the direction of the beam, the transmission power, the time domain resource, the frequency domain resource, or the antenna deployment of each satellite in the first satellite set.

[0036] According to the above scheme, the relevant information of the first interference signal can include relevant parameters of the coherent transmission to be transmitted by the first satellite set, so that other communication devices can determine the resource where the first interference signal exists based on the relevant configuration parameters of the relevant transmission, that is, the relevant information can indirectly indicate the resource where the first interference signal exists, so that other communication devices can implement interference avoidance based on the relevant information.

[0037] With reference to the first aspect, in some implementations of the first aspect, the method further includes: sending, by the second satellite, fourth information, the fourth information being used to request establishment of a second satellite set; receiving, by the second satellite, fifth information from one or more satellites, the fifth information being response information of the fourth information; and determining, by the second satellite, the second satellite set according to the fifth information of the one or more satellites, the second satellite set including at least one satellite of the one or more satellites.

[0038] According to the above scheme, the satellite set for cooperative transmission can be established by the plurality of satellites, so as to realize joint execution of cooperative transmission by the plurality of satellites.

[0039] With reference to the first aspect, in some implementations of the first aspect, the fourth information includes a satellite identifier of the second satellite and / or ephemeris information of the second satellite.

[0040] With reference to the first aspect, in some implementations of the first aspect, the fifth information includes the fourth information; and / or, the fifth information includes one or more of antenna deployment information, attitude information or ephemeris information of a satellite sending the fifth information.

[0041] With reference to the first aspect, in some implementations of the first aspect, the method further includes: sending, by the second satellite, sixth information to a third satellite, the sixth information being used to instruct the third satellite to enter a dormant state, and the second satellite set including the third satellite.

[0042] The dormant state can also be referred to as an energy-saving state or a low-power-consumption state. In the dormant state, the satellite can not transmit terminal service data.

[0043] According to the above scheme, the power consumption of the third satellite can be reduced, and the use efficiency of limited electrical energy obtained by the solar panel can be improved.

[0044] With reference to the first aspect, in some implementations of the first aspect, the sixth information includes time information, the time information being used to indicate a start time and / or a time length of the dormant state.

[0045] According to the above scheme, the sixth information can provide time information of the dormant state, so that the third satellite can determine the start and end times of the dormant state, so that the third satellite can enter the dormant state in time and save energy, and can determine the time of exiting the dormant state according to the sixth information, and participate in cooperative transmission of the satellite set in time.

[0046] With reference to the first aspect, in some implementations of the first aspect, the method further includes: sending, by the second satellite, a wake-up signal, the wake-up signal being used to instruct the third satellite to end the dormant state.

[0047] According to the scheme, the sixth information can indicate that the third satellite enters the dormant state, and when it is necessary to wake up the third satellite from the dormant state, the second satellite can wake up the third satellite through the low-power wake-up signal to exit the dormant state. The third satellite can be woken up on demand, and the flexibility of state switching is improved.

[0048] In a second aspect, a communication method is provided, which can be performed by a second communication device. The second communication device can be a communication equipment (such as a satellite, a ground station, or a core network device), or the second communication device can be a component (such as a chip, or a chip system, or a logic circuit, or software) configured to (or for) the communication equipment. Hereinafter, the method is described by taking the second communication device as an example.

[0049] The method includes: determining, by the second communication device, first information, the first information including related information of an interference signal, the interference signal being generated by coherent transmission to be performed by a first satellite set, the first satellite set including a plurality of satellites. The second communication device sends the first information.

[0050] In an implementation, the second communication device is a first satellite in the first satellite set, or the second communication device is a component configured to the first satellite.

[0051] That is, the communication method provided by the second aspect is applied to the first satellite.

[0052] Specifically, the communication method is applied to the first satellite, and includes: the communication method is performed by the first satellite (i.e., the second communication device is the first satellite). In this case, the second communication device determining the first information can be replaced by the first satellite determining the first information. The second communication device sending the first information can be replaced by the first satellite sending the first information. Alternatively, the communication method is applied to the first satellite, and includes: the communication method can be performed by a component configured to the first satellite (i.e., the second communication device is a component configured to the first satellite).

[0053] In another implementation, the second communication device is a first network element, or the second communication device is a component configured to the first network element. The first network element is a ground network device or a satellite other than the first satellite set.

[0054] That is, the communication method provided by the second aspect is applied to the first network element.

[0055] Specifically, the communication method is applied to the first network element, and the communication method is executed by the first network element (i.e., the second communication device is the first network element). In this case, the second communication device determines the first information, or the first network element determines the first information. The second communication device sends the first information, or the first network element sends the first information. Alternatively, the communication method is applied to the first satellite, and the communication method can be executed by a component configured in the first network element (i.e., the second communication device is a component configured in the first network element)

[0056] The first network element can be specifically introduced with reference to the introduction in the first aspect, and details are not described herein.

[0057] In combination with the second aspect, in some implementations of the second aspect, the method is applied to the first network element, the first information includes related information of a plurality of interference signals, the plurality of interference signals are respectively generated by a plurality of satellite sets performing coherent transmission, the plurality of interference signals include the first interference signal, and the plurality of satellite sets include the first satellite set.

[0058] In combination with the second aspect, in some implementations of the second aspect, the first information is broadcast information, and the first information includes first indication information, the first indication information is used to indicate that a target receiving end of the first information is a master satellite in a satellite set.

[0059] In combination with the second aspect, in some implementations of the second aspect, the related information of the first interference signal includes one or more of the following information of the first interference signal:

[0060] Azimuth information, energy information, frequency information, or time information.

[0061] In combination with the second aspect, in some implementations of the second aspect, the azimuth information is used to indicate one or more of the following:

[0062] A wave position covered by the first interference signal, a geographical area covered by the first interference signal, or a coordinate of a direction of the first interference signal in a global coordinate system.

[0063] In combination with the second aspect, in some implementations of the second aspect, the related information of the first interference signal is used to determine the first interference signal, and the related information of the first interference signal is used to indicate one or more of the following parameters of the coherent transmission to be performed by the first satellite set:

[0064] A direction of a beam, a transmission power, or an antenna deployment manner.

[0065] In a third aspect, a communication method is provided. The method can be performed by a second satellite, or the method can be performed by a component (e.g., a chip, or a chip system, or a logic circuit, or software) configured to (or used for) the second satellite. The following is described by way of example with the method being performed by the second satellite.

[0066] The method includes that the second satellite sends fourth information, the fourth information being used for requesting to establish a satellite set for cooperative transmission. The second satellite receives fifth information from one or more satellites, the fifth information being response information of the fourth information. The second satellite determines, according to the fifth information of the one or more satellites, a second satellite set, the second satellite set including at least one satellite of the one or more satellites.

[0067] With reference to the third aspect, in some implementations of the third aspect, the fourth information includes a satellite identifier of the second satellite and / or ephemeris information of the second satellite.

[0068] With reference to the third aspect, in some implementations of the third aspect, the fifth information includes the fourth information; and / or, the fifth information includes one or more of antenna deployment information, attitude information, or ephemeris information of a satellite sending the fifth information.

[0069] With reference to the third aspect, in some implementations of the third aspect, the method further includes that the second satellite sends sixth information to a third satellite, the sixth information being used for instructing the third satellite to enter a dormant state.

[0070] With reference to the third aspect, in some implementations of the third aspect, the sixth information includes time information, the time information being used for indicating a starting time and / or a time length of the dormant state.

[0071] With reference to the third aspect, in some implementations of the third aspect, the method further includes that the second satellite sends a wake-up signal, the wake-up signal being used for instructing the third satellite to end the dormant state.

[0072] In a fourth aspect, a communication apparatus is provided. In one design, the apparatus can include a module corresponding to each of the methods / applications / steps / actions described in the first aspect or in any of the implementations of the first aspect. The module can be a hardware circuit, or software, or a combination of hardware circuit and software. In one design, the apparatus includes a transceiver configured to receive first information, the first information including correlation information of a first interference signal, the first interference signal being an interference signal to be generated by coherent transmission to be performed by a first satellite set, the first satellite set including a plurality of satellites. The apparatus also includes a processing unit configured to determine a first resource, the first resource being non-overlapping with at least one of a spatial resource, a time resource, or a frequency resource occupied by the first interference signal. The transceiver is further configured to transmit a first signal on the first resource.

[0073] In a fifth aspect, a communication apparatus is provided. In an implementation, the apparatus can include a module corresponding to each of the methods / operations / steps / actions described in the second aspect or any of the implementations of the second aspect. The module can be implemented in hardware circuitry, software, or both. In an implementation, the apparatus includes a processing unit configured to determine first information, the first information comprising information related to interference signals, the interference signals being interference signals that would be caused by coherent transmission performed by a first satellite set, the first satellite set comprising a plurality of satellites. The apparatus also includes a transceiver configured to transmit the first information.

[0074] In a sixth aspect, a communication apparatus is provided. In an implementation, the apparatus can include a module corresponding to each of the methods / operations / steps / actions described in the third aspect or any of the implementations of the third aspect. The module can be implemented in hardware circuitry, software, or both. In an implementation, the apparatus includes a transceiver configured to transmit fourth information, the fourth information being used to request a satellite set to establish cooperative transmission. The transceiver is also configured to receive fifth information from one or more satellites, the fifth information being responsive to the fourth information. A processing unit is configured to determine a second satellite set based on the fifth information from the one or more satellites, the second satellite set comprising at least one satellite of the one or more satellites.

[0075] In a seventh aspect, a communication apparatus is provided. The communication apparatus includes at least one processor. The processor can implement the methods in the first aspect through the third aspect and any of the possible implementations of the first aspect through the third aspect.

[0076] Optionally, the processor is coupled with the memory and is configured to execute the instructions in the memory to implement the methods in the first aspect through the third aspect and any of the possible implementations of the first aspect through the third aspect. Optionally, the communication apparatus further includes the memory.

[0077] Optionally, the communication apparatus further includes a communication interface, and the processor is coupled with the communication interface. In embodiments of the present application, the communication interface can be a transceiver, a pin, a circuit, a bus, a module, or any other type of communication interface, without limitation.

[0078] In an implementation, the communication apparatus is a communication device, such as a terminal device or an access network device. When the communication apparatus is a communication device, the communication interface can be a transceiver, or an input / output interface.

[0079] In another implementation, the communication apparatus is a chip configured in the communication device. When the communication apparatus is a chip configured in the communication device, the communication interface can be an input / output interface.

[0080] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0081] In an eighth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method in the first aspect to the third aspect and any possible implementation manner of the first aspect to the third aspect.

[0082] In a specific implementation process, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits, etc. The input signal received by the input circuit can be received and input by, for example but not limited to, a receiver, the signal output by the output circuit can be output to and transmitted by, for example but not limited to, a transmitter, and the input circuit and the output circuit can be the same circuit which is used as the input circuit and the output circuit at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and various circuits.

[0083] In a ninth aspect, a computer program product is provided, comprising: a computer program (which can also be referred to as code or instructions), which when executed, causes a computer to perform the method in the first aspect to the third aspect and any possible implementation manner of the first aspect to the third aspect.

[0084] In a tenth aspect, a computer-readable storage medium is provided, which stores a computer program (which can also be referred to as code or instructions) which when executed on a computer, causes the computer to perform the method in the first aspect to the third aspect and any possible implementation manner of the first aspect to the third aspect.

[0085] In an eleventh aspect, a communication system is provided, comprising at least one first communication device and at least one second communication device as described above. Optionally, the communication system further comprises a satellite in the first set of satellites.

[0086] It can be understood that the beneficial effects of the features corresponding to the first aspect in the second aspect to the eleventh aspect are described in the first aspect, and are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0087] FIG. 1 is a schematic diagram of a communication system architecture suitable for embodiments of the present application;

[0088] FIG. 2 is another schematic diagram of a communication system architecture suitable for embodiments of the present application;

[0089] Figure 3 is another schematic diagram of a communication system architecture suitable for embodiments of the application;

[0090] Figure 4 is a schematic flow chart of a communication method according to an embodiment of the application;

[0091] Figure 5 is a schematic diagram of a second communication device transmitting first information according to an embodiment of the application;

[0092] Figure 6 is another schematic diagram of a second communication device transmitting first information according to an embodiment of the application;

[0093] Figure 7 is another schematic flow chart of a communication method according to an embodiment of the application;

[0094] Figure 8 is a schematic block diagram of an example of a communication device according to an embodiment of the application;

[0095] Figure 9 is a schematic block diagram of another example of a communication device according to an embodiment of the application. DETAILED DESCRIPTION

[0096] To facilitate understanding of the embodiments of the application, the following is first described:

[0097] In the present application, "indication" can include direct indication, indirect indication, display indication, implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0098] In the present application, " / " can represent that the objects before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" can be used to describe the existence of three relationships between the associated objects, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural.

[0099] In the present application, "at least one" means one or more, and "multiple" means two or more, such as three, four, or more. Similar expressions (such as at least one, at least one, etc.) are the same. "At least one of the following", "one or more of the following" or similar expressions means any combination of these items, which can include only a single item or a combination of multiple items. For example, at least one of a, b, or c, can represent: a, or b, or c; a and b; or, a and c; or, b and c; or, a and b and c. Where a, b, c can be single or multiple.

[0100] In the present application, in order to facilitate the description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. can be used for distinction. The words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. also do not limit to be different.

[0101] In the present application, the words "exemplarily", "example", or "for example" are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "exemplarily", "example" or "for example" should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. The words "exemplarily", "example" or "for example" are used to present related concepts in a specific manner, for the purpose of understanding.

[0102] In the present application, "sending information / data" only represents the direction of information / data transmission, including direct sending by the communication interface (such as air interface (short for air interface)) of the device, "sending" can also be understood as the "output" of the module interface, and "sending" can include indirect sending by the processing unit through the communication interface, that is, the processing unit outputs information / data through the module interface, and then transmits to the communication interface of the device for sending. "Receiving information / data" only represents the direction of information / data transmission, including direct receiving by the communication interface, "receiving" can also be understood as the "input" of the module interface, and "receiving information / data" can include indirect receiving by the processing unit through the communication interface, that is, the communication interface receives information / data, and then transmits to the module interface of the processing unit, and then the module interface inputs the information / data to the processing unit. "Sending information / data to … (such as terminal)" can be understood as that the destination of the information is the terminal. It can include direct or indirect sending of information / data to the terminal. "Receiving information / data from … (such as terminal)" can be understood as that the source of the information is the terminal. It can include direct or indirect receiving of information / data from the terminal. The information / data can be processed as necessary between the source and the destination of the information / data, such as format change, etc., but the destination can understand the valid information / data from the source. Similar expressions in the present application can be understood similarly, and will not be repeated here.

[0103] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: satellite communication system, long term evolution (long term evolution, LTE) system, 5th generation (5th generation, 5G) communication system, wireless fidelity (wireless fidelity, WiFi) system, and the scheme provided by the present application can also be applied to future communication systems or other communication systems, etc. The present application does not limit this.

[0104] FIG. 1 is a schematic diagram of a possible, non-limiting system. The system architecture shown in FIG. 1 is a system architecture of integration of satellite communication and terrestrial mobile communication technology (such as 5G mobile communication technology or future communication system), the satellite has all protocol layer processing functions of the access network node, which can be referred to as a satellite base station, the ground mobile terminal (such as user equipment (UE)) can communicate with the satellite base station through an air interface (such as a user-universal terrestrial radio access network (Uu)) interface, and access the network through the satellite base station. The satellite base station is backhauled to the ground station through a microwave, and the ground station is connected to the core network (CN) through a wired connection. The link between the satellite base station and the ground station can be referred to as a satellite radio interface (SRI) link or a feeder link. The satellite base station can deliver signaling / service data with the core network through a next generation (NG) interface, and the ground station is responsible for forwarding signaling / service data between the satellite base station and the core network. The core network can deliver service data with a data network (DN). As shown in FIG. 1, there is an inter-satellite link (ISL) between the satellite base stations, and the Xn interface can be established between the satellite base stations based on the ISL, which is used for signaling interaction between satellites, etc.

[0105] FIG. 2 is a schematic diagram of another possible, non-limiting system. As shown in FIG. 2, the ground mobile terminal (such as UE) communicates with the ground base station through the Uu interface, and the satellite can realize transparent payload transmission between the UE and the ground base station. The satellite and the ground station can be considered as a remote radio unit of the ground base station, which realizes functions such as radio frequency filtering, frequency conversion and amplification of signals, and the signal waveform is unchanged; the satellite forwarding is transparent to the UE.

[0106] Figure 3 shows yet another possible, non-limiting, schematic overall view of a system. As shown in Figure 3, the communication system 10 includes a radio access network (RAN) 100, a core network CN 200, and a data network DN 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in Figure 3, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in Figure 3, collectively referred to as 120). Other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 3), etc., can also be included in the RAN 100. The terminals 120 are wirelessly connected to the RAN nodes 110. The access network nodes (or RAN nodes) 110 are connected to the core network 200 by wireline, or wirelessly. The core network devices in the core network 200 and the access network nodes 110 in the RAN 100 can be different physical devices, or they can be the same physical device that integrates the core network logical functions and the radio access network logical functions.

[0107] The RAN 100 can be a 3rd Generation Partnership Project (3GPP) related cellular system, e.g., a 4G, 5G, or future evolution system. The RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 can also be a communication system that integrates two or more of the above systems.

[0108] The access network nodes 110, which can also be referred to as access network devices, RAN entities, or access nodes, etc., form part of the communication system and help terminals to access the wireless access. The access network nodes 110 in the communication system 10 can be of the same type or of different types. In some scenarios, the roles of the access network nodes 110 and the terminals 120 are relative, e.g., the network element 120i in Figure 3 can be a helicopter or a drone, which can be configured to be a mobile base station. For a terminal 120j that accesses the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The access network nodes 110 and the terminals 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 3 can be understood as communication apparatuses with base station functionalities, and the network elements 120a-120j can be understood as communication apparatuses with terminal functionalities.

[0109] In a possible scenario, the access network node can be a base station, such as a satellite base station, a ground base station, an evolved NodeB (eNodeB), a next generation NodeB (gNB), or a base station in a future mobile communication system. The access network node can be a macro base station (such as 110a in FIG. 3), a micro base station or an indoor station (such as 110b in FIG. 3), a relay node or a donor node, or a wireless controller in a CRAN scenario. Alternatively, the access network node can be an access point (AP), a transmission reception point (TRP), an access node in a WiFi system, or the like. Optionally, the access network node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, and the like. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU). All or part of the functions of the access network node in this application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The access network node in this application can also be a logical node, a logical module or software that can implement all or part of the functions of the access network node.

[0110] In another possible scenario, multiple access network nodes cooperate to assist a terminal to implement wireless access, and different access network nodes implement part of the functions of a base station. For example, the access network node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), and the like. The CU and the DU can be separately arranged, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a radio frequency remote unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0111] The terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely applied to various scenarios for communication. The scenarios include, but are not limited to, at least one of the following: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), massive machine-type communications (mMTC), D2D, V2X, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, automatic driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, sensing terminal, terminal integrated with communication and sensing, or smart city, etc. The terminal can be a mobile phone (such as 120a, 120j and 120e in FIG. 3), a tablet computer, a computer with wireless transceiver function (such as 120g in FIG. 3), customer-premises equipment (CPE), a smart point of sale (POS) machine, a wearable device, a vehicle (such as 120b in FIG. 3), a drone, a helicopter, an airplane (such as 120i in FIG. 3), a ship, a robot, a mechanical arm, a sensor, a perceiver, or a smart home device (such as 120h in FIG. 3), etc.

[0112] In order to better understand the scheme of the present application, the related art involved in the present application is described below.

[0113] I. Cooperative transmission

[0114] Cooperative transmission refers to a communication mode in which multiple transmission points cooperate with a terminal to communicate, which can enhance the coverage of data and improve the reliability of data transmission. Cooperative transmission can also be referred to as joint transmission, multi-point cooperative transmission, or multi-point joint transmission. Cooperative transmission can include coherent transmission and non-coherent transmission.

[0115] 1) Coherent transmission

[0116] The coherent transmission can also be referred to as coherent cooperative transmission or coherent joint transmission (CJT). The coherent transmission refers to that multiple transmission points can respectively perform precoding processing on data after information interaction, and transmit the precoded data to a data receiving end (such as a terminal) on the same transmission resource (such as a time-frequency resource). The data transmitted by the multiple transmission points is in-phase superimposed (or referred to as coherent superposition) in a wireless channel, and the data received by the receiving end is the data superimposed in the channel.

[0117] 2) Non-coherent transmission

[0118] The non-coherent transmission can also be referred to as non-coherent cooperative transmission or non-coherent joint transmission (NCJT). The non-coherent transmission refers to that multiple transmission points can determine the precoding of data according to the channel state between each transmission point and a data receiving end, and the multiple transmission points respectively transmit data of different data layers to the data receiving end on the same transmission resource (such as a time-frequency resource). That is, the data of at least two transmission layers (or referred to as transmission streams) of multiple-input multiple-output (MIMO) of the data receiving end comes from different transmission points. However, the application is not limited thereto, and the non-coherent transmission can also include that multiple transmission points transmit data to the same data receiving end on different resources, and the terminal performs data merging.

[0119] There is a problem of large link budget in satellite-terrestrial terminal communication. The characteristics of large-scale constellation and high-gain antenna of a satellite system provide a prerequisite for cooperative transmission of multiple satellites. Through joint coherent transmission of multiple satellites, the equivalent aperture of the antenna of the signal transmitting end can be improved, and the signal strength can be improved, thereby overcoming the problem that it is difficult to improve the signal quality due to the large link budget.

[0120] However, when multiple satellites provide network services (such as transmission of service data / control signaling) for a ground terminal through coherent transmission, the transmission beams of the multiple satellites can form a grating lobe with a strength comparable to that of the main lobe. The grating lobe refers to energy radiated in a non-target direction (i.e., a non-receiving end direction), and the grating lobe will cause interference to the radiation direction.

[0121] To solve the above problems, the application provides that a communication device can provide related information of an interference signal of coherent transmission to other communication devices before the satellite set performs the coherent transmission, so that the communication devices that can be interfered by the interference signal can perform interference avoidance, thereby reducing communication interference and improving communication reliability.

[0122] The embodiments of the application will be described below with reference to the accompanying drawings.

[0123] FIG. 4 is a schematic flow chart of a communication method provided by the present application. The communication method can include, but is not limited to, the following S401 and S402. Each step will be described in detail below.

[0124] S401, the second communication device sends first information, the first information including related information of a first interference signal, the first interference signal being an interference signal to be generated by coherent transmission to be performed by a first satellite set.

[0125] Correspondingly, the first communication device receives the first information. The first communication device can obtain the related information of the first interference signal from the first information.

[0126] The first satellite set includes a plurality of satellites. In the present application, a satellite set is a set of a plurality of satellites jointly performing the same cooperative transmission. The satellite set can also be referred to as a satellite cluster, and the first satellite set can also be referred to as a first satellite cluster.

[0127] Exemplarily, the first interference signal includes a beam sidelobe signal of the coherent transmission to be performed by the first satellite set.

[0128] The second communication device can be a first satellite in the first satellite set, or a component (such as a chip, or a chip system, or a logic circuit, or software) configured in the first satellite. Alternatively, the second communication device can be a first network element, or a component configured in the first network element. Details will be described below.

[0129] In an embodiment, the second communication device is a first satellite in the first satellite set, or a component (such as a chip, or a chip system, or a logic circuit, or software) configured in the first satellite.

[0130] Exemplarily, as shown in FIG. 5, the first information can be sent by a satellite 1-1 (i.e., an example of the first satellite) in the first satellite set, and the related information of the first interference signal to be generated by the coherent transmission to be performed by the first satellite set is provided to other communication devices through the first information, so that other communication devices can perform interference avoidance.

[0131] Optionally, the satellite 1-1 can be configured with a MAC scheduler, and the first information can come from the MAC scheduler, such as the first information can be generated and output by the MAC scheduler. The satellite 1-1 sends the first information, which can specifically include: the first information is output by the MAC scheduler of the satellite 1-1, the first information is acquired by a sending module (or a transceiver module) of the satellite 1-1, and the first information is sent by the sending module (or the transceiver module).

[0132] Exemplarily, the satellite 1-1 can be a master satellite in a first satellite set. A master satellite in a satellite set can be a satellite that controls (or schedules, organizes) other satellites in the satellite set to perform coordinated transmission.

[0133] For example, the master satellite in a satellite set is configured with a MAC scheduler. Specifically, the MAC scheduler can be used to control the satellites in the satellite set to perform coordinated transmission, such as determining transmission configuration parameters of the coordinated transmission, e.g., radio transmission resources.

[0134] The satellite 1-1 can determine configuration information of the coherent transmission to be performed, and based on the configuration information of the coherent transmission, the satellite 1-1 can determine related information of a first interference signal that will be generated by the coherent transmission. Specifically, the satellite 1-1 can determine a main lobe signal direction of the coherent transmission, and calculate a grating lobe signal direction, thereby determining the related information of the first interference signal, which includes the related information of the grating lobe signal. Optionally, the related information of the first interference signal can also include related information of other interference signals (such as side lobe signals, etc., which are not limited in the present application) related to the coherent transmission. After the satellite 1-1 determines the related information of the first interference signal, the satellite 1-1 can send the first information including the related information of the first interference signal.

[0135] In one example, the first information sent by the satellite 1-1 can be broadcast information. A communication device (such as a first communication device) receiving the first information can perform interference avoidance according to the related information of the first interference signal. Exemplarily, the first communication device can be a satellite, such as the satellite 2-1, the satellite 2-2, or the satellite 3 shown in FIG. 5. Alternatively, the first communication device can also be a ground access network node or a terminal.

[0136] In another example, the first information sent by the satellite 1-1 can be unicast information or groupcast information. The satellite 1-1 can send the first information to a neighboring satellite of the satellite 1-1.

[0137] For example, the satellite 1-1 can send the first information to the satellite 2-1 shown in FIG. 5. Specifically, the satellite 1-1 can send the first information to the satellite 2-1 through a communication interface between the satellite 1-1 and the satellite 2-1.

[0138] Optionally, the satellite 2-1 can be a master satellite in a second satellite set, that is, the satellite 2-1 is a satellite that controls the satellites in the second satellite set to perform coordinated transmission. The satellite 2-1 can determine resources that can avoid the interference of the first interference signal for the coordinated transmission of the second satellite set based on the related information of the first interference signal.

[0139] In an optional mode, if the satellite does not provide network service for the terminal alone after joining the satellite set, but only provides network service for the terminal through cooperation transmission of the satellite set, the satellite 1-1 can interact with the satellite 2-1, and the satellite 1-1 sends the first information to the satellite 2-1 after learning that the satellite 2-1 is the master satellite of the second satellite set, but does not send the first information to the satellite 2-2 in the second satellite set.

[0140] It should be understood that the satellite providing network service for the terminal in the embodiments of the present application can include but is not limited to assisting the terminal to access the network, transmitting service data of the terminal, transmitting control signaling of the terminal, and the like.

[0141] In another optional mode, if the satellite can still provide network service for the terminal alone on resources that do not perform cooperation transmission after joining the satellite set, the satellite 2-1 can further determine the transmission resources of the satellite 2-1 that can avoid the interference of the first interference signal based on the related information of the first interference signal. In addition, the satellite 1-1 can further send the first information to the satellite 2-2, so that the satellite 2-2 can perform interference avoidance when providing network service for the terminal alone.

[0142] The satellite 1-1 can further send the first information to the satellite 3 through the communication interface between the satellite 1-1 and the satellite 3 as shown in FIG. 5, so that the satellite 3 can perform interference avoidance.

[0143] In the second implementation, the second communication device is a first network element, or the second communication device is a component (such as a chip, or a chip system, or a logic circuit, or software) configured in the first network element.

[0144] For example, the first network element can be a satellite other than the first satellite set, such as the first network element 1 shown in FIG. 6. Alternatively, the first network element can be a ground communication device, such as the first network element 2 shown in FIG. 6, such as a ground station of a satellite, or a ground access network device, or a core network device.

[0145] For example, the first network element can be configured with a MAC scheduler, and the first information can come from the MAC scheduler, such as the first information can be generated and output by the MAC scheduler. The first network element sending the first information can specifically include: outputting the first information by the MAC scheduler of the first network element, the sending module (or the transceiver module) of the first network element acquiring the first information, and the sending module (or the transceiver module) sending the first information.

[0146] The first network element can obtain the related information of the first interference signal. For example, the related information of the first interference signal can be provided by the first satellite (i.e., the primary satellite in the first satellite set) to the first network element. Alternatively, the related information of the first interference signal can be determined by the first network element, for example, the first network element can obtain the configuration information of the coherent transmission from the first satellite, and determine the related information of the first interference signal based on the configuration information of the coherent transmission. Alternatively, the configuration information of the coherent transmission to be performed by the first satellite set can be determined by the first network element, and the first network element can also determine the related information of the first interference signal. Optionally, the configuration information of the coherent transmission can be obtained by the MAC scheduler of the first network element from the first satellite, or the configuration information of the coherent transmission to be performed by the first satellite set can be determined by the MAC scheduler of the first network element.

[0147] Optionally, the first network element can obtain the related information of one or more interference signals, the one or more interference signals being interference signals to be generated by coherent transmissions to be performed by one or more satellite sets, the one or more interference signals including the first interference signal, and the one or more satellite sets including the first satellite set. The first information sent by the first network element includes the related information of the one or more interference signals.

[0148] In one example, the first information sent by the first network element is broadcast information, i.e., the first network element broadcasts the first information, so that a communication device (e.g., the first communication device) receiving the first information can perform interference avoidance according to the related information of the first interference signal. For example, the first communication device can be a satellite, a ground access network node, or a terminal.

[0149] Optionally, the first information further includes first indication information, the first indication information being used to indicate that the target receiving end of the first information includes a primary satellite in the satellite set.

[0150] For example, if the satellite is no longer providing network service to the terminal alone after joining the satellite set, and only provides network service to the terminal through the cooperation of the satellite set, since the satellites in the satellite set other than the master satellite (which can be referred to as a slave satellite) do not perform resource scheduling, the master satellite in the satellite set can receive the first information and obtain the related information of the interference signal in the first satellite. After the slave satellite obtains the first information, the slave satellite can determine not to perform subsequent processing / interpretation on the first information according to the first indication information. For example, the first indication information can be carried in a field earlier in the first information. Specifically, the first information can include a signaling field and a data field, the signaling field includes related information for decoding the data field, and the first indication information can be located in the signaling field. Further, the first indication information can be located in an earlier position in the signaling field. After the slave satellite obtains the first information, the slave satellite can determine that the destination receiving end of the first information is not the slave satellite through the first indication information in the signaling field, and then the slave satellite can not continue to read other information in the signaling field and the data field, and can discard the first information (such as deleting the first information from the cache or storage). The first indication information can reduce unnecessary power consumption of the slave satellite.

[0151] For example, the first indication information can be a 1-bit flag bit in the first information. For example, the 1-bit is 1, indicating that the destination receiving end of the first information is the master satellite in the satellite set. Or vice versa, the 1-bit is 0, indicating that the destination receiving end of the first information is the master satellite in the satellite set.

[0152] In another example, the first information sent by the first network element is unicast information or groupcast information.

[0153] For example, the first information is unicast information, and the first network element can send the first information to a communication device that can be interfered by the interference signal (including the first interference signal) indicated by the first information. For example, as shown in FIG. 6, the first network element can send the first information to satellite 2-1, and the first information includes related information of one or more interference signals that can cause interference to the communication of satellite 2-1. Alternatively, the first network element can send the first information to satellite 3, and the first information includes related information of one or more interference signals that can cause interference to the communication of satellite 3. For example, the first information can include related information of the first interference signal, and the first information can also include related information of a second interference signal, which is an interference signal generated by the coherent transmission to be performed by the second satellite set. The first network element can also send related information of one or more interference signals that can cause interference to the communication of satellite 1-1 or the first satellite set to satellite 1-1.

[0154] For another example, the first information sent by the first network element is groupcast information. For example, the first network element can form a satellite group by grouping satellites that can interfere with each other. The first network element can assign a corresponding group identifier to each satellite in the group. For example, satellites in the same satellite group can be adjacent satellites, but the application is not limited thereto. The first network element can send the first information to the satellite group, which includes the related information of one or more interference signals that can interfere with the communication of the satellite group. The first information can include the group identifier of the satellite group. As shown in FIG. 6, the satellite group can include satellite 1-1, satellite 2-1, and satellite 3. The first network element sends the first information to the satellite group, which can include the related information of the first interference signal and the related information of the second interference signal. Satellite 1-1 can obtain the related information of the second interference signal in the first information to avoid interference, and satellite 2-1 can obtain the related information of the first interference signal in the first information to avoid interference. Satellite 3 can avoid interference according to the related information of the first interference signal and the related information of the second interference signal. Alternatively, if a satellite joins the satellite set and separately provides network services for terminals on resources that do not perform cooperative transmission, the satellite group can also include one or more satellites that can be interfered by the interference signals indicated in the first information.

[0155] The above describes the specific implementation of the first network element sending the first information to the second communication device, taking the second communication device as an example of the first satellite or the first network element. The following exemplary describes the related information of the first interference signal.

[0156] In an embodiment, the related information of the first interference signal includes one or more of the following information of the first interference signal:

[0157] Azimuth information, energy information, frequency information, or time information.

[0158] Example 1: The related information of the first interference signal includes the azimuth information of the first interference signal, which can indicate the area covered by the first interference signal. In order to avoid interference, the communication device outside the first satellite set (such as the first communication device) can avoid communication in the area covered by the first interference signal according to the area covered by the first interference signal.

[0159] Exemplarily, the azimuth information of the first interference signal is used to indicate one or more of the following:

[0160] The wave position covered by the first interference signal, the geographical area covered by the first interference signal, or the coordinates of the direction of the first interference signal in the global coordinate system.

[0161] For example, the location information of the first interference signal can indicate a wave position covered by the first interference signal, such as the location information can include an identifier of the wave position covered by the first interference signal. The ground station can divide the ground into regions of fixed size, each region corresponding to a wave position, and each wave position is assigned an identifier. The awareness of the wave position by different communication devices is the same, and therefore, the location information can inform the wave position covered by the first interference signal through the identifier of the wave position.

[0162] For another example, the location information of the first interference signal can indicate a geographical area covered by the first interference signal, such as the location information can include longitude information and latitude information of the geographical area, so that the first communication device can determine the geographical area covered by the first interference signal based on the longitude information and the latitude information in the location information.

[0163] For another example, the location information of the first interference signal can indicate a geographical area covered by the first interference signal, such as the location information can include longitude information and latitude information of the geographical area, so that the first communication device can determine the geographical area covered by the first interference signal based on the longitude information and the latitude information in the location information. Different communication devices reach a consensus on the GCS, that is, the interpretation of the GCS by each communication device is the same. The first communication device can determine the direction of the first interference signal based on the coordinate parameters of the GCS contained in the location information Determine the direction of the first interference signal, and thereby determine the area covered by the first interference signal based on the direction of the first interference signal.

[0164] Example 2, the related information can include time information of the first interference signal, which can indicate a time resource (such as a time period in which the interference signal exists) in which the first interference signal exists. Such as the time resource can be an orthogonal frequency division multiplexing (OFDM) symbol, an OFDM symbol group, a subframe or a frame. The first communication device can avoid communication in the time period in which the first interference signal exists to avoid interference, such as the related information contains both location information and time information, and the first communication device can avoid communication in the location of the first interference signal in the time period in which the first interference signal exists.

[0165] In Example 3, the related information can include frequency information of the first interference signal, e.g., the frequency information indicates frequency domain resources where the first interference signal exists, e.g., the frequency resources can be frequency bands, bandwidth parts (BWPs), resource blocks (RBs), subcarrier groups, etc., and the first communication device can avoid communicating in the frequency domain resources where the first interference signal exists to avoid interference. The related information can further include azimuth information and / or time information, so that the first communication device can more accurately perform interference avoidance, e.g., avoiding communication in the frequency domain resources where the first interference signal exists in a time period and / or in an azimuth.

[0166] The related information of the first interference signal can further include energy information of the first interference signal, so that the first communication device can determine whether the first interference signal can cause interference to the communication of the first communication device based on the energy information of the first interference signal, and thus determine whether interference avoidance is needed.

[0167] In another implementation, the related information of the first interference signal is used to determine the first interference signal, and the related information of the first interference signal is used to indicate one or more of the following parameters of the coherent transmission to be performed by the first satellite set:

[0168] a direction of a beam, a transmission power, a time domain resource, a frequency domain resource, or an antenna deployment manner of each satellite in the first satellite set.

[0169] The direction of the beam can include a direction of a beam when each satellite in the first satellite set performs the coherent transmission. The transmission power can be an effective isotropic radiated power (EIRP) of a beam when each satellite in the first satellite set performs the coherent transmission. The indication manner of the time domain resource and the frequency domain resource can refer to the resource indication manner of the first interference signal described above, and will not be described herein. The antenna deployment manner can include, but is not limited to, a layout of an antenna of each satellite, a position of each satellite, an orientation of an antenna panel, etc.

[0170] After the first communication device obtains the related information of the first interference signal including the configuration parameters of the coherent transmission to be performed by the first satellite set, the first communication device can determine at least one of the following information based on the configuration parameters of the coherent transmission: a coverage area of the first interference signal, a time domain resource where the first interference signal exists, a frequency domain resource where the first interference signal exists, or an energy of the first interference signal, so that the first communication device can perform interference avoidance. Specifically, the first communication device can determine related information of a grating lobe signal and / or a side lobe signal of the coherent transmission based on the configuration parameters of the coherent transmission, and thus perform interference avoidance.

[0171] S402, the first communication device transmits a first signal on a first resource, the first resource being non-overlapped with at least one of a spatial resource, a time resource or a frequency resource occupied by the first interference signal.

[0172] The first communication device can determine the first resource for transmitting the first signal according to the first information, the first signal being a communication signal of the first communication device. As introduced above, the first communication device can determine at least one of the coverage area of the first interference signal, the time resource in which the first interference signal exists, the frequency resource in which the first interference signal exists, or the energy of the first interference signal based on the first information, so that the first communication device can determine the first resource, the first resource being non-overlapped with at least one of a spatial resource, a time resource or a frequency resource occupied by the first interference signal, to achieve interference avoidance. For example, the first communication device can transmit the first signal by using a beam whose coverage area is non-overlapped with the coverage area of the first interference signal. And / or, the first communication device can transmit the first signal by using a time resource which is non-overlapped with the time resource in which the first interference signal exists. And / or, the first communication device can transmit the first signal by using a frequency resource which is non-overlapped with the frequency resource in which the first interference signal exists.

[0173] For example, the first communication device can be the satellite 2-1, the satellite 3 as shown in FIG. 5 and FIG. 6, or the first communication device can also be a ground access network device or a terminal.

[0174] For example, the first communication device is the satellite 2-1 as shown in FIG. 5 and FIG. 6, i.e., the primary satellite of the second satellite set. The first resource can be a transmission resource for performing cooperative transmission by the second satellite set.

[0175] Optionally, the satellite 2-1 can transmit the second information to a satellite (e.g., the satellite 2-2) other than the satellite 2-1 in the second satellite set, the second information being used to indicate the first resource. After receiving the first resource, the satellite 2-2 can determine the resource for performing cooperative transmission.

[0176] For example, the satellite 2-1 can determine configuration information of the cooperative transmission of the second satellite set, and transmit the configuration information to a satellite (e.g., the satellite 2-2) other than the satellite 2-1 in the second satellite set, so that the satellite 2-2 performs the cooperative transmission based on the configuration information, the configuration information can include the second information. The configuration information can also include one or more of beam information, time resource or frequency resource.

[0177] Optionally, the first resource is a transmission resource of a coherent transmission of the second satellite set. The satellite 2-1 can determine the correlation information of a second interference signal to be generated by the coherent transmission, and can send third information including the correlation information of the second interference signal, i.e., the satellite 2-1 can act as a second communication device to inform other communication devices of the correlation information of the interference signal (i.e., the second interference signal) to be generated by the coherent transmission to be performed by the second satellite set. Alternatively, the satellite 2-1 can send the correlation information of the second interference signal to the first network element, and the first network element can inform other communication devices of the correlation information of the second interference signal. Alternatively, the satellite 2-1 can send configuration information of the coherent transmission to be performed by the second satellite set to the first network element, and the first network element can inform other communication devices of the correlation information of the second interference signal based on the configuration information. The specific implementation can refer to the manner in which the first network element provides the correlation information of the first interference signal to other communication devices as described above. Details are not described herein.

[0178] According to the above scheme, before the satellite set performs the coherent transmission, a communication device (such as a master satellite in the satellite set or a first network element) can provide other communication devices with the correlation information of the interference signal of the coherent transmission, so that the communication devices that can be interfered by the interference signal can perform interference avoidance, thereby reducing communication interference and improving communication reliability. It is expected to realize orderly and reliable transmission of various transmissions in the communication system.

[0179] The above embodiments involve a satellite set performing cooperative transmission. Exemplarily, the embodiments of the present application provide a satellite set establishment manner. It should be noted that the following introduction is only an example of the satellite set establishment manner, and the present application is not limited thereto. Multiple satellites can also be established into a satellite set in other manners.

[0180] FIG. 7 is a schematic flowchart of a satellite set establishment manner provided by the embodiments of the present application.

[0181] S701, a first satellite sends fourth information, the fourth information being used to request establishment of a satellite set performing cooperative transmission.

[0182] Correspondingly, one or more satellites receive the fourth information, such as a third satellite receiving the fourth information.

[0183] The fourth information can include an identifier of the first satellite and / or ephemeris information of the first satellite.

[0184] Optionally, the fourth information can further include demand information for establishing the satellite set, which can indicate antenna demand, position demand, or attitude demand of the satellite, etc. so that the satellites satisfying the demand indicated by the demand information respond to the fourth information.

[0185] The fourth information can be broadcast information, and the first satellite can broadcast the fourth information so that a satellite capable of receiving the fourth information learns the establishment request of the satellite set, and thus determines whether to establish the satellite set with the first satellite. Alternatively, the fourth information can be unicast information, and the first satellite can send the fourth information to the neighboring satellites or part or all of the satellites with which the first satellite establishes a communication interface respectively.

[0186] S702, the third satellite sends fifth information to the first satellite, the fifth information being response information of the fourth information.

[0187] The one or more satellites send the fifth information to the first satellite. The one or more satellites include the third information, and accordingly, the first satellite receives the fifth information from the one or more satellites.

[0188] After the one or more satellites receive the fourth information, in response to the fourth information, the one or more satellites attempt to establish the satellite set for cooperative transmission with the first satellite, and the one or more satellites can send the fifth information to the first satellite.

[0189] Optionally, the fifth information can include the fourth information, and / or the fifth information can include one or more of antenna deployment information, attitude information, or ephemeris information of the satellite sending the fifth information.

[0190] That is, in order to respond to the fourth information, the one or more satellites can copy the fourth information and send it to the first satellite.

[0191] For example, the fourth information can include the above-mentioned demand information for establishing the satellite set, and the third satellite determines that the third satellite meets the demand indicated by the demand information. Then, the third information can copy the fourth information and send it to the first satellite. The first satellite receives the fourth information through the ISL between the first satellite and the third satellite, and can determine that the third satellite responds to the fourth information and attempts to establish the satellite set with the first satellite.

[0192] For another example, the third satellite determines to establish the satellite set with the first satellite, copies the fourth information and sends it to the first satellite. After sending the fourth information, the third satellite can further send relevant information of the third satellite to the first satellite. The relevant information can include, but is not limited to, one or more of antenna deployment information, attitude information, or ephemeris information. In this way, after the first satellite receives the relevant information of the third satellite, the first satellite determines whether to establish the satellite set with the third satellite.

[0193] For another example, the fifth information can include the relevant information of the third satellite. In this way, after the first satellite receives the relevant information of the third satellite, the first satellite determines whether to establish the satellite set with the third satellite.

[0194] S703, the first satellite determines a first satellite set including the first satellite and a third satellite according to the fifth information of one or more satellites.

[0195] The first satellite can determine at least one satellite satisfying the requirement according to the relevant information of the one or more satellites sending the fifth information, and determine the first satellite set. Specifically, the first satellite can perform centralized calculation based on the relevant information of the one or more satellites, and select at least one satellite to form the first satellite set with the first satellite. The first satellite is the master satellite of the first satellite set.

[0196] Optionally, the first satellite can send feedback information to the one or more satellites.

[0197] The feedback information sent by the first satellite to the satellites in the first satellite set except the first satellite is acknowledge (ACK) feedback information, by which the satellites in the first satellite set are informed of the successful establishment of the first satellite set. Optionally, the ACK feedback information can also include relevant information of the first satellite set, such as one or more of the following: an identifier of the first satellite set, identifiers of the satellites included in the first satellite set, and the number of the satellites included in the first satellite set, or the relevant information can also include other information. The present application does not limit this.

[0198] Optionally, the first satellite can send non-acknowledge (NACK) feedback information to the satellite sending the fifth information but not belonging to the first satellite set, so as to inform the responding satellite by the non-acknowledge feedback information that it has not successfully joined (or established) the satellite set. Alternatively, the first satellite can not send the non-acknowledge feedback information, and for the satellite sending the fifth information, if no acknowledge feedback information is received within a predefined time period after sending the fifth information, it can be determined that the satellite set has not been successfully established.

[0199] According to the above scheme, a satellite set for cooperative transmission of multiple satellites can be established, so as to realize joint cooperative transmission of the multiple satellites.

[0200] Optionally, the first satellite sends sixth information to the third satellite in the first satellite set, and the sixth information is used to instruct the third satellite to enter a dormant state.

[0201] Since the service of the terminal is time-varying, the service transmission amount can be high or low, and the service transmission rate requirement can be high or low, and the service with high transmission rate requirement can be transmitted for a period of time, and the service with low transmission rate requirement can be transmitted for another period of time. Therefore, only part of the satellites in the first satellite set can be required to perform cooperative transmission in some time period. Embodiments of the present application provide an energy saving scheme, and the first satellite can notify the third satellite in the first satellite set to enter a sleep state through the sixth information. The power consumption of the third satellite can be reduced, and the use efficiency of the limited power obtained by the solar panel can be improved. The sleep state can also be referred to as an energy saving state or a low power consumption state. In the sleep state, the satellite can not transmit terminal service data. However, the present application is not limited thereto.

[0202] In an implementation manner, the sixth information includes time information, and the time information is used to indicate a starting moment and / or a duration of the sleep state.

[0203] For example, the time information can indicate the starting moment of the sleep state, and the duration of the sleep state can be predefined, or the time information can indicate the duration of the sleep state, and the starting moment can be predefined, such as the next time unit of the sixth information. After receiving the sixth information, the third satellite can enter the sleep state at the starting moment of the sleep state, and exit the sleep state at the end of the duration of the sleep state.

[0204] For another example, the time information can indicate the starting moment of the sleep state, and the third satellite enters the sleep state at the starting moment of the sleep state. The third satellite can monitor a wake-up signal in the sleep state, such as that the third satellite can monitor the wake-up signal through a low power consumption receiver. When the first satellite needs to wake up the third satellite to exit the sleep state, the first satellite sends a wake-up signal to the third satellite, and the third satellite exits the sleep state after receiving the wake-up signal.

[0205] It can be understood that, in order to implement the functions in the above embodiments, the base station and the terminal include corresponding hardware structures and / or software modules for performing various functions. Those skilled in the art should easily realize that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware depends on the specific application scenario and design constraints of the technical solution.

[0206] FIG. 8 and FIG. 9 are structural diagrams of possible communication apparatuses provided by embodiments of the present application. The communication apparatuses can be used to implement the functions of the second communication apparatus or the first communication apparatus in the method embodiments described above, and thus can also achieve the beneficial effects of the method embodiments described above. In embodiments of the present application, the communication apparatus can be a satellite as shown in FIG. 1 to FIG. 3, can be one of the terminals 120a-120j as shown in FIG. 1 to FIG. 3, can be the access network device 110a or 110b as shown in FIG. 1 to FIG. 3, can be one of the core network devices in the core network CN as shown in FIG. 1 to FIG. 3, or can be a module (such as a chip or chip system) applied to a terminal, an access network device, or a core network device.

[0207] The communication apparatus 800 includes a transceiver 820, which can be used to receive or send information, and further includes a processor 810, which can be used to process instructions or data to implement corresponding operations.

[0208] It should be understood that when the communication apparatus 800 is a chip configured in (or used for) a communication device, the transceiver 820 in the communication apparatus 800 can be an input / output interface or circuit of the chip, and the processor 810 in the communication apparatus 800 can be a processor in the chip.

[0209] Optionally, the communication apparatus 800 can further include a storage unit 830, which can be used to store instructions or data, and the processor 810 can execute the instructions or data stored in the storage unit to make the communication apparatus implement corresponding operations.

[0210] The communication apparatus 800 can be used to implement the functions of the second communication apparatus or the first communication apparatus in the method embodiments shown in FIG. 4 and FIG. 7.

[0211] When the communication apparatus 800 is used to implement the functions of the second communication apparatus in the method embodiment shown in FIG. 4, the transceiver 820 is configured to receive first information, the first information including related information of a first interference signal, the first interference signal being an interference signal that will be generated by coherent transmission to be performed by a first satellite set, the first satellite set including a plurality of satellites. The processor 810 is configured to determine a first resource, the first resource being non-overlapping with at least one of a spatial domain resource, a time domain resource, or a frequency domain resource occupied by the first interference signal. The transceiver is further configured to send a first signal on the first resource.

[0212] When the communication apparatus 800 is configured to implement the function of the first communication apparatus in the method embodiment shown in Fig. 4, the processing unit 810 is configured to determine first information, the first information comprising information related to interference signals, the interference signals being interference signals caused by coherent transmission to be performed by a first satellite set, the first satellite set comprising a plurality of satellites. The transceiver unit 820 is configured to send the first information.

[0213] For more detailed description of the processing unit 810 and the transceiver unit 820, please refer to the related description in the method embodiment shown in Fig. 4.

[0214] When the communication apparatus 800 is configured to implement the function of the second communication apparatus in the method embodiment shown in Fig. 7, the transceiver unit 820 is configured to send fourth information, the fourth information being used to request establishment of a satellite set for cooperative transmission. The transceiver unit 820 is also configured to receive fifth information from one or more satellites, the fifth information being response information to the fourth information. The processing unit 810 is configured to determine a second satellite set according to the fifth information of the one or more satellites, the second satellite set comprising at least one satellite of the one or more satellites.

[0215] For more detailed description of the processing unit 810 and the transceiver unit 820, please refer to the related description in the method embodiment shown in Fig. 7.

[0216] It should be understood that the transceiver unit 820 in the communication apparatus 800 can be implemented by a communication interface (such as a transceiver, a transceiving circuit, an input / output interface, or a pin, etc.). When the communication interface is a transceiver, the transceiver can be composed of a receiver and / or a transmitter. The processing unit 810 in the communication apparatus 800 can be implemented by at least one processor, and the processing unit 810 in the communication apparatus 800 can also be implemented by at least one logic circuit. Optionally, the communication apparatus 800 further comprises a storage unit, which can be implemented by a memory.

[0217] As shown in Fig. 9, the communication apparatus 900 comprises a processor 910 and an interface circuit 920. The processor 910 and the interface circuit 920 are coupled to each other. It can be understood that the interface circuit 920 can be a transceiver or an input / output interface. Optionally, the communication apparatus 900 further comprises a memory 930, which is used to store instructions executed by the processor 910 or store input data required by the processor 910 to run instructions or store data generated after the processor 910 runs instructions.

[0218] In an implementation manner, the memory 930 can also be integrated in the processor 910 or independent of the processor 910.

[0219] When the communication apparatus 900 is used to implement the method shown in FIG. 4 and FIG. 7, the processor 910 is configured to implement the functions of the processing unit 810, and the interface circuit 920 is configured to implement the functions of the transceiver unit 820.

[0220] When the communication apparatus is a chip applied to a terminal device, the terminal device chip can implement the functions of the first communication apparatus in the method embodiments. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device. Alternatively, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the terminal device to the network device.

[0221] When the communication apparatus is a module applied to a network device, the network device module can implement the functions of the second communication apparatus or the first communication apparatus in the method embodiments. The network device module receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the terminal device to the network device. Alternatively, the network device module sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the terminal device. The network device module herein can be a baseband chip of the network device, or a DU or other module. The DU herein can be a DU under the open radio access network (O-RAN) architecture.

[0222] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0223] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, which can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device or a terminal device. The processor and the storage medium can also exist as discrete components in the access network device or the terminal device.

[0224] According to the method provided in the embodiments of the present application, the embodiments of the present application further provide a computer program product, which comprises computer program codes, and when the computer program codes are executed by one or more processors, the device comprising the processors executes the method shown in FIG. 4 and FIG. 7.

[0225] In the above embodiments, the implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented by using software, the implementation can be in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are entirely or partially executed. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable apparatus.

[0226] According to the method provided in the embodiments of the present application, the embodiments of the present application further provide a computer readable storage medium, which stores the above computer program or instructions, and when the computer program or instructions are run by one or more processors, the device comprising the processors executes the method shown in FIG. 4 and FIG. 7.

[0227] The computer program or instructions can be stored in or transferred from one computer-readable medium to another computer-readable medium, for example, from one website, computer, server or data center to another website, computer, server or data center through wired or wireless means. The computer-readable medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; and a semiconductor medium, such as a solid-state disk. The computer-readable medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0228] According to the method provided in the embodiments of the present application, the embodiments of the present application further provide a communication system, which comprises one or more first communication devices as described above. The system can further comprise one or more second communication devices as described above.

[0229] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device is only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0230] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. they can be located in one place or distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the present application.

[0231] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be mutually referred to if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0232] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: receiving first information, the first information comprising information about a first interference signal, the first interference signal being an interference signal to be generated by coherent transmission to be performed by a first satellite set, the first satellite set comprising a plurality of satellites; transmitting a first signal on a first resource, the first resource being non-overlapping with at least one of a spatial resource, a time resource or a frequency resource occupied by the first interference signal.

2. The method of claim 1, wherein, The first interference signal comprises a beam grating lobe signal of the coherent transmission.

3. The method according to claim 1 or 2, characterized in that, The first information is from a first satellite in the first satellite set, or the first information is from a first network element, the first network element being a ground network device or a satellite other than the first satellite set.

4. The method according to any one of claims 1 to 3, characterized in that, The first information is from a first network element, the first information comprising information about a plurality of interference signals, the plurality of interference signals being interference signals to be generated by coherent transmission to be performed by a plurality of satellite sets, the plurality of interference signals comprising the first interference signal, the plurality of satellite sets comprising the first satellite set.

5. The method according to any one of claims 1 to 4, characterized in that, The first information is broadcast information, the first information further comprising first indication information, the first indication information being used to indicate that a target receiving end of the first information is a primary satellite in a satellite set, The method comprises: receiving the first information by a second satellite, the second satellite being a primary satellite in a second satellite set.

6. The method according to any one of claims 1 to 5, characterized in that, The method comprises: receiving the first information by a second satellite, the second satellite being a primary satellite in a second satellite set, The first resource is a resource used for performing cooperative transmission by the second satellite set, and the first signal is a signal transmitted by the second satellite in the performing of the cooperative transmission.

7. The method of claim 6, wherein, The method further comprises: transmitting second information to satellites other than the second satellite in the second satellite set, the second information being used to indicate the first resource.

8. The method according to claim 6 or 7, characterized in that, The method further comprises: transmitting third information, the third information comprising information about a second interference signal, the second interference signal being an interference signal to be generated by coherent transmission to be performed by a second satellite set.

9. The method according to any one of claims 1 to 8, characterized in that, The information about the first interference signal comprises one or more of the following information about the first interference signal: azimuth information, energy information, frequency information or time information.

10. The method of claim 9, wherein, The azimuth information is used to indicate one or more of the following: a wave position covered by the first interference signal, a geographical area covered by the first interference signal, or a coordinate of a direction of the first interference signal in a global coordinate system.

11. The method according to any one of claims 1 to 10, characterized in that, The information about the first interference signal is used to determine the first interference signal, and the information about the first interference signal is used to indicate one or more of the following parameters of the coherent transmission to be performed by the first satellite set: a direction of a beam, a transmission power, a time resource, a frequency resource or an antenna deployment manner of each satellite in the first satellite set.

12. The method according to any one of claims 1 to 11, characterized in that, The method further comprises: transmitting fourth information, the fourth information being used to request establishment of a second satellite set; receiving fifth information from one or more satellites, the fifth information being response information of the fourth information; The second satellite set is determined according to the fifth information of the one or more satellites, and the second satellite set includes at least one of the one or more satellites.

13. The method of claim 12, wherein, The fourth information includes satellite identification of the second satellite and / or ephemeris information of the second satellite; and / or, The fifth information includes one or more of the fourth information; and / or, The fifth information includes one or more of antenna deployment information, attitude information or ephemeris information of a satellite sending the fifth information.

14. The method according to claim 12 or 13, characterized in that, The method further includes: sending sixth information to a third satellite, the sixth information being used to instruct the third satellite to enter a dormant state, and the second satellite set including the third satellite.

15. The method of claim 14, wherein, The sixth information includes time information used to indicate a starting time and / or a time length of the dormant state.

16. The method according to claim 14 or 15, characterized in that The method further includes: sending a wake-up signal used to instruct the third satellite to end the dormant state.

17. A method of communication, comprising: The method includes: determining first information, the first information including related information of a first interference signal, the first interference signal being an interference signal to be generated by coherent transmission to be performed by a first satellite set, the first satellite set including a plurality of satellites; sending the first information.

18. The method of claim 17, wherein, The method is applied to a first satellite in the first satellite set; or, the method is applied to a first network element, the first network element being a ground network device or a satellite other than the first satellite set.

19. The method of claim 17 or 18, wherein, The method is applied to a first network element, the first information including related information of a plurality of interference signals, the plurality of interference signals being respectively generated by coherent transmission performed by a plurality of satellite sets, the plurality of interference signals including the first interference signal, and the plurality of satellite sets including the first satellite set.

20. The method of any one of claims 17-19, wherein, The first information is broadcast information, and the first information includes first indication information, the first indication information being used to indicate that a target receiving end of the first information is a master satellite in a satellite set.

21. The method according to any one of claims 17 to 20, characterized in that, The related information of the first interference signal includes one or more of the following information of the first interference signal: azimuth information, energy information, frequency information or time information.

22. The method of claim 21, wherein, The azimuth information is used to indicate one or more of the following: a wave position covered by the first interference signal, a geographical area covered by the first interference signal, or a coordinate of a direction of the first interference signal in a global coordinate system.

23. The method of any one of claims 17-22, wherein, The related information of the first interference signal is used to determine the first interference signal, and the related information of the first interference signal is used to indicate one or more of the following parameters of coherent transmission to be performed by the first satellite set: a direction of a beam, a transmission power, or an antenna deployment manner.

24. A method of communication, comprising: The method includes: sending fourth information, the fourth information being used to request a satellite set for establishing cooperative transmission; receiving fifth information from one or more satellites, the fifth information being response information of the fourth information; determining a second satellite set according to the fifth information of the one or more satellites, and the second satellite set including at least one of the one or more satellites.

25. The method of claim 24, wherein, The fourth information includes satellite identification of the second satellite and / or ephemeris information of the second satellite.

26. The method of claim 24 or 25, wherein, The fifth information comprises the fourth information; and / or, the fifth information comprises one or more of antenna deployment information, attitude information or ephemeris information of a satellite that transmits the fifth information.

27. The method of any one of claims 24-26, wherein, The method further comprises: sending sixth information to a third satellite, the sixth information being used to instruct the third satellite to enter a dormant state.

28. The method of claim 27, wherein, The sixth information comprises time information, the time information being used to indicate a starting time and / or a time length of the dormant state.

29. The method of claim 27 or 28, wherein, The method further comprises: sending a wake-up signal, the wake-up signal being used to instruct the third satellite to end the dormant state.

30. A communications device, characterized by comprising at least one processor coupled to a memory, the memory being used to store a computer program, the processor being used to execute the computer program stored in the memory to cause the communication apparatus to perform the method according to any one of claims 1 to 16; or to cause the communication apparatus to perform the method according to any one of claims 17 to 23; or to cause the communication apparatus to perform the method according to any one of claims 24 to 29.

31. A communications device, characterized by comprising a processor and a communication interface, the processor being used to control the communication interface to perform receiving or sending operations to cause the communication apparatus to implement the method according to any one of claims 1 to 16, or to implement the method according to any one of claims 17 to 23, or to implement the method according to any one of claims 24 to 29.

32. The apparatus of claim 30 or 31, wherein, The apparatus is a chip.

33. A computer-readable storage medium, characterized in that, instructions, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 16, or to perform the method according to any one of claims 17 to 23, or to perform the method according to any one of claims 24 to 29.

34. A computer program product, characterised in that, The computer program product comprises: a computer program, when executed, causes a computer to perform the method according to any one of claims 1 to 16, or to perform the method according to any one of claims 17 to 23, or to perform the method according to any one of claims 24 to 29.

35. A communication system, characterized by comprising a first communication apparatus and a second communication apparatus, the first communication apparatus being used to perform the method according to any one of claims 1 to 16, the second communication apparatus being used to perform the method according to any one of claims 17 to 23.

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