Communication method and communication apparatus for shared spectrum

Abstract

The embodiments of the present application relate to the technical field of communications. Disclosed are a communication method and communication apparatus for a shared spectrum, which can reduce co-channel interference between an IMT system and a satellite system. The method comprises: receiving configuration information of a satellite, wherein the configuration information comprises serial number information and timestamp information of the satellite; sending a communication signal, wherein the communication signal is sent after interference processing between an IMT system and a satellite system is performed on the basis of the orientation and operating trajectory of the satellite relative to the IMT system; or receiving a communication signal, wherein the communication signal is received after interference processing between the IMT system and the satellite system is performed on the basis of the orientation and operating trajectory of the satellite relative to the IMT system, and the orientation and operating trajectory of the satellite are determined on the basis the serial number information, the timestamp information, and ephemeris information of the satellite. The embodiments of the present application are used for interference processing between an IMT system and a satellite system, and are applied to an international mobile telecommunications (IMT) system.

Description

A communication method and a communication device for sharing spectrum Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and a communication device for sharing a spectrum. Background Art

[0002] According to the current allocation of spectrum resources by the International Telecommunication Union (ITU), spectrum resources have been basically allocated. If the International Mobile Telecommunications (IMT) system requires more spectrum, the IMT system must share spectrum resources with other systems, such as satellite systems.

[0003] According to radio frequency regulations, when IMT services are introduced as latecomers and the IMT system shares spectrum resources with a satellite system, the IMT system must ensure that interference with existing satellite system services meets certain constraints to ensure the normal operation of existing satellite system services. Alternatively, future satellite communication systems may be integrated into or supplement the IMT system, with the IMT system sharing spectrum resources with the satellite system. However, regardless of the spectrum sharing method, as long as the satellite system and the IMT system share a certain spectrum segment, co-channel interference between the IMT system and the satellite system is inevitable. Therefore, to further improve spectrum utilization efficiency, co-channel interference mitigation technologies between satellite and IMT systems require further research.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a spectrum-sharing communication method and a communication device, which can reduce co-channel interference between an IMT system and a satellite system.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions.

[0007] In a first aspect, a spectrum-sharing communication method is provided, which is applied to an International Mobile Communications (IMT) system, where the IMT system and a satellite system share the spectrum. The method includes: receiving satellite configuration information, where the configuration information includes satellite numbering information and timestamp information; sending a communication signal, where the communication signal is sent after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position and trajectory to the IMT system; or, receiving a communication signal, where the communication signal is received after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position and trajectory to the IMT system; wherein the satellite's position and trajectory are determined based on the numbering information, timestamp information, and satellite ephemeris information.

[0008] The method may be performed by an IMT device in an IMT system. The IMT device may be a network device or a terminal device. The network device may be, for example, a base station, and the terminal device may be, for example, a UE.

[0009] Ephemeris information, also known as satellite ephemeris or two-line orbital element (TLE), is an expression used to describe the position and velocity of a space object. Satellite ephemeris accurately calculates, predicts, depicts, and tracks the time, position, and velocity of satellites and other objects. It can accurately express the parameters of celestial bodies, satellites, spacecraft, missiles, space debris, and other objects. It can place objects in three dimensions and depict the past, present, and future of celestial objects in time.

[0010] The IMT system and the satellite system share the spectrum, which can be the uplink and downlink of the IMT system and the uplink (ground-to-air) of the satellite system shared spectrum, or the uplink and downlink of the IMT system and the downlink (air-to-ground) of the satellite system shared spectrum.

[0011] Therefore, in the present application, after receiving the configuration information of the satellite, the IMT device can determine the orientation and trajectory of the satellite relative to the IMT device itself according to the configuration information of the satellite, so that the interference between the IMT device and the satellite system can be processed according to the orientation and trajectory of the satellite relative to the IMT device itself, thereby reducing the co-channel interference between the IMT system and the satellite system. For example, when the uplink and downlink of the IMT system and the uplink of the satellite system share the spectrum, the communication signal can be a downlink signal sent by the base station in the IMT system or an uplink signal sent by the UE. The downlink signal sent by the base station in the IMT system or the uplink signal sent by the UE will interfere with the uplink signal of the satellite system. Before sending the downlink signal, the base station or the UE can first perform interference processing between the IMT system and the satellite system according to the orientation and trajectory of the satellite relative to the base station / UE itself, thereby reducing the co-channel interference of the uplink and downlink of the IMT system on the uplink of the satellite system. Alternatively, when the uplink and downlink of the IMT system and the downlink of the satellite system share the spectrum, the communication signal may be an uplink signal received by the base station in the IMT system or a downlink signal received by the UE. The downlink of the satellite system may generate an interference signal to the uplink reception of the base station in the IMT system or the downlink reception of the UE. Before receiving the uplink signal, the base station or the UE may perform interference processing between the IMT system and the satellite system based on the orientation and trajectory of the satellite relative to the base station / UE itself, thereby reducing the co-channel interference of the satellite system on the uplink and downlink of the IMT system.

[0012] In one possible design, the configuration information also includes ephemeris information; alternatively, the correspondence between number information and ephemeris information is stored locally. If this correspondence is stored locally on the IMT device, the IMT device can determine the satellite's ephemeris information based on the satellite number information and the correspondence in the received configuration information, thereby reducing information exchange between the IMT device and the satellite gateway.

[0013] In one possible design, a communication signal is sent after interference processing is performed between the IMT system and the satellite system based on the azimuth, operating speed, and operating trajectory of the satellite relative to the IMT system; or, a communication signal is received after interference processing is performed between the IMT system and the satellite system based on the azimuth, operating speed, and operating trajectory of the satellite relative to the IMT system; wherein the azimuth, operating speed, and operating trajectory of the satellite are determined based on numbering information, timestamp information, and ephemeris information of the satellite. That is, when determining the satellite information, the operating speed of the satellite can also be determined relative to the azimuth and operating trajectory of the satellite determined in the first aspect. When performing interference processing, not only the azimuth and operating trajectory of the satellite are considered, but also the operating speed of the satellite, so as to more accurately perform co-channel interference processing between the IMT system and the satellite system.

[0014] In one possible design, receiving satellite configuration information includes receiving configuration information sent by a ground station / gateway of the satellite system. If a base station in an IMT system performs the method, the gateway may periodically send the satellite configuration information to the base station in the IMT system, so that the base station, after periodically receiving the satellite configuration information, can handle co-channel interference with the satellite based on the satellite configuration information. If a terminal in the IMT system performs the method, the terminal may receive the satellite configuration information from the base station and, based on the satellite configuration information, handle co-channel interference with the satellite.

[0015] In one possible design, interference processing before transmitting a communication signal includes at least one of the following: adjusting the direction of the communication signal's transmit beam, adjusting the communication signal's transmit beam width, adjusting the downtilt angle of the antenna transmitting the communication signal, and adjusting the transmission power of the communication signal. Interference processing before receiving a communication signal includes at least one of the following: adjusting the direction of the communication signal's receive beam, adjusting the communication signal's receive beam width, and adjusting the downtilt angle of the antenna receiving the communication signal. This application does not limit the interference processing method; other methods are also possible.

[0016] Therefore, to reduce the co-channel interference from the downlink of a base station in the IMT system to the uplink of a satellite system, at least one of the above interference processing methods can be performed before the base station in the IMT system sends a downlink signal. Alternatively, to reduce the co-channel interference from the downlink of a satellite system to the uplink of a base station in the IMT system, at least one of the above interference processing methods can be performed before the base station in the IMT system receives an uplink signal.

[0017] In one possible design, interference handling before transmitting a communication signal includes at least one of the following: adjusting the direction of the communication signal's transmit beam, adjusting the communication signal's transmit beam width, or adjusting the communication signal's transmit power; and interference handling before receiving a communication signal includes at least one of the following: adjusting the direction of the communication signal's receive beam, or adjusting the communication signal's receive beam width. This application does not limit the manner of interference handling, and other manners are also possible.

[0018] Therefore, to reduce the co-channel interference from the uplink of a UE in the IMT system to the uplink of a satellite system, at least one of the above interference processing methods may be performed before the UE in the IMT system sends an uplink signal. Alternatively, to reduce the co-channel interference from the downlink of a satellite system to the downlink of a UE in the IMT system, at least one of the above interference processing methods may be performed before the UE in the IMT system receives a downlink signal.

[0019] In one possible design, the interference processing before sending the communication signal is to adjust the transmission beam direction of the communication signal, adjust the transmission beam width of the communication signal, or adjust the transmission beam direction and beam width of the communication signal, so that the null direction or trough direction of the transmission beam points to the direction where the satellite is located; or, the interference processing before receiving the communication signal is to adjust the reception beam direction of the communication signal, adjust the reception beam width of the communication signal, or adjust the reception beam direction and beam width of the communication signal, so that the null direction or trough direction of the reception beam points to the direction where the satellite is located.

[0020] In this way, when the null or trough direction of the transmit beam points toward the satellite, the IMT system's uplink and downlink will cause less co-channel interference with the satellite system's uplink. When the null or trough direction of the receive beam points toward the satellite, the satellite system's downlink will cause less co-channel interference with the IMT system's uplink and downlink.

[0021] In one possible design, the configuration information also includes satellite beam pointing information and the 3dB beam width of the satellite antenna. The satellite beam pointing information includes the latitude and longitude of the ground where the satellite beam points. This is because if an IMT device is outside the 3dB beam width of the satellite antenna's 3dB beam, the uplink and downlink interference between IMT devices on the satellite's uplink is minimal, and the downlink interference from the satellite on the uplink and downlink between IMT devices is also minimal. In this case, the IMT device does not need to perform interference processing with the satellite system, thereby improving the capacity and link quality of the IMT system.

[0022] In one possible design, communication signals are sent after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position and trajectory, as well as the satellite's beam pointing information and the satellite's 3dB beamwidth information. Alternatively, communication signals are received after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position and trajectory, as well as the satellite's beam pointing information and the satellite's 3dB beamwidth information. The satellite's relative position and trajectory, the satellite's beam pointing information and the satellite's 3dB beamwidth information are determined based on configuration information. Of course, the manner in which interference processing is determined here may also include the aforementioned operating speed of the satellite relative to the IMT system.

[0023] That is, if the satellite's beam pointing information and the satellite antenna's 3dB beam width information are also taken into account when performing interference processing, the flexibility of whether to perform interference processing between IMT devices and satellite systems can be improved.

[0024] In one possible design, the method further includes: sending configuration information to the network device, the configuration information being used by the network device to perform interference processing between the network device and the satellite system according to the configuration information before sending or receiving communication signals. In this design, the base station in the IMT system may send configuration information to other base stations via the Xn interface. In this way, different base stations can perform co-channel interference processing between the IMT device and the satellite system based on the satellite configuration information, thereby suppressing interference between different base stations and satellites. Similarly, if a network device executes the method of the present application, in addition to receiving satellite configuration information from a gateway / ground station, the network device may also receive satellite configuration information from other network devices.

[0025] In one possible design, the method further includes: sending configuration information to the terminal device, the configuration information being used by the terminal device to perform interference processing between the terminal device and the satellite system according to the configuration information before sending or receiving a communication signal. In this design, the base station in the IMT system may send the configuration information to the UE within the coverage area of ​​the base station, or the terminal devices in the IMT system may share the configuration information through wireless communication, that is, the terminal device may send the configuration information to another terminal device, and the terminal device may receive the configuration information sent by another terminal device. In this way, both the base station and the UE may perform co-channel interference processing between the IMT device and the satellite system according to the satellite configuration information, thereby suppressing the co-channel interference between the uplink and downlink between the base station and the UE and the satellite.

[0026] In one possible design, the configuration information is also used to predict the corresponding configuration information of the satellite at a future time. In this way, if an IMT device in the IMT system cannot obtain the satellite configuration information in real time, the IMT device can still predict the satellite position information at a certain time in the future based on the historical configuration information it has received. The configuration information at a certain time in the future can then be repeated for a period of time in the future.

[0027] In a second aspect, a communication device is provided, which is applied to an International Mobile Communications IMT system, where the IMT system and a satellite system share a spectrum. The method includes: a receiving unit for receiving satellite configuration information, where the configuration information includes satellite number information and timestamp information; a sending unit for sending a communication signal, where the communication signal is sent after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position and trajectory to the IMT system; or, the receiving unit is further used to receive the communication signal, where the communication signal is received after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position and trajectory to the IMT system; wherein the satellite's position and trajectory are determined based on the number information, timestamp information and satellite ephemeris information.

[0028] The beneficial effects of the second aspect can be found in the description of the first aspect.

[0029] In one possible design, the configuration information also includes ephemeris information; or, the correspondence between the numbering information and the ephemeris information is stored locally.

[0030] In one possible design, the communication signal is sent after interference processing is performed between the IMT system and the satellite system based on the azimuth, operating speed and operating trajectory of the satellite relative to the IMT system; or, the communication signal is received after interference processing is performed between the IMT system and the satellite system based on the azimuth, operating speed and operating trajectory of the satellite relative to the IMT system; wherein the azimuth, operating speed and operating trajectory of the satellite are determined based on numbering information, timestamp information and ephemeris information of the satellite.

[0031] In one possible design, the receiving unit is used to receive configuration information sent by a ground station or a gateway station of the satellite system.

[0032] In one possible design, the interference processing before sending the communication signal includes at least one of the following: adjusting the transmission beam direction of the communication signal, adjusting the transmission beam width of the communication signal, adjusting the downtilt angle of the antenna that sends the communication signal, and adjusting the transmission power of the communication signal; the interference processing before receiving the communication signal includes at least one of the following: adjusting the reception beam direction of the communication signal, adjusting the reception beam width of the communication signal, and adjusting the downtilt angle of the antenna that receives the communication signal.

[0033] In one possible design, interference handling before transmitting a communication signal includes at least one of the following: adjusting the transmit power of the communication signal, the transmit beam direction of the communication signal, or adjusting the transmit beam width of the communication signal; and interference handling before receiving a communication signal includes at least one of the following: adjusting the receive beam direction of the communication signal or adjusting the receive beam width of the communication signal. This application does not limit the method of interference handling, and other methods are also possible.

[0034] In one possible design, the interference processing before sending the communication signal is to adjust the transmission beam direction of the communication signal, adjust the transmission beam width of the communication signal, or adjust the transmission beam direction and beam width of the communication signal, so that the null direction or trough direction of the transmission beam points to the direction where the satellite is located; or, the interference processing before receiving the communication signal is to adjust the reception beam direction of the communication signal, adjust the reception beam width of the communication signal, or adjust the reception beam direction and beam width of the communication signal, so that the null direction or trough direction of the reception beam points to the direction where the satellite is located.

[0035] In one possible design, the configuration information also includes the satellite's beam pointing information and the satellite antenna's 3dB beam width information.

[0036] In one possible design, the communication signal is sent after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position, trajectory, satellite beam pointing information, and 3dB beam width information of the satellite antenna; or, the communication signal is received after interference processing between the IMT system and the satellite system is performed based on the satellite's relative position, trajectory, satellite beam pointing information, and 3dB beam width information of the satellite antenna; wherein the satellite's position, trajectory, satellite beam pointing information, and 3dB beam width information of the satellite antenna are determined based on configuration information.

[0037] In one possible design, the transmitting unit is further configured to transmit configuration information to the network device. The configuration information is used by the network device to perform interference resolution between the network device and the satellite system before transmitting or receiving communication signals. Accordingly, for the device whose execution subject is a network device, its receiving unit can be used to receive configuration information from not only a gateway / ground station but also another network device.

[0038] In one possible design, the transmitting unit is further configured to transmit configuration information to a terminal device. The configuration information is used by the terminal device to perform interference resolution between the network device and the satellite system before transmitting or receiving communication signals. Accordingly, for the present device, in which the execution subject is a terminal device, the receiving unit can be used not only to receive configuration information from the network device but also to receive configuration information from another terminal device.

[0039] In a possible design, the configuration information is also used to predict the corresponding configuration information of the satellite at a future time.

[0040] In a third aspect, an IMT device is provided, comprising: a memory, a processor, and a transceiver. The memory and processor are coupled. The memory is configured to store computer program code, including computer instructions. The memory is also configured to store satellite configuration information. The transceiver is configured to receive and transmit data, for example, receiving satellite configuration information or transmitting satellite configuration information or communication signals. The processor executes the computer instructions and processes and calculates relevant data, causing the IMT device to perform any of the shared spectrum communication methods provided in the first aspect or its corresponding possible designs.

[0041] The processor may be used to implement a computing function, i.e., to process the computing tasks in this application, for example, to implement a method for determining interference handling based on configuration information. Alternatively, the processing module may not include a computing function, and the IMT device may further include a calculator, which is used to process the computing tasks in this application, for example, to implement a method for determining interference handling based on configuration information.

[0042] In a fourth aspect, a communication device is provided, comprising at least one processor, the at least one processor being connected to a memory, the at least one processor being used to read and execute a program stored in the memory so that the device executes a method as described in the first aspect or any one of the first aspects above.

[0043] In a fifth aspect, a chip is provided, which is coupled to a memory and is used to read and execute program instructions stored in the memory to implement the method as described in the first aspect or any one of the first aspects.

[0044] In a sixth aspect, embodiments of the present application provide an electronic device, including an antenna, one or more processors, and one or more memories. The one or more memories are coupled to the one or more processors, and the one or more memories are configured to store computer program code, the computer program code including computer instructions. When the one or more processors execute the computer instructions, the electronic device performs the shared spectrum communication method described in any of the aforementioned aspects and any possible implementations.

[0045] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, comprising computer instructions. When the computer instructions are executed on a communication device, the communication device executes the communication method for shared spectrum in any of the above aspects and any possible implementation methods.

[0046] In an eighth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on a communication device, the communication device executes the shared spectrum communication method in any of the above aspects and any possible implementation methods.

[0047] In a ninth aspect, an embodiment of the present application provides a system, which may include a wireless access device and at least one terminal device according to any possible implementation of any of the above aspects. The terminal device and the wireless access device may perform the shared spectrum communication method according to any of the above aspects and any possible implementation.

[0048] It can be understood that any of the communication devices, IMT devices, electronic devices, chips, computer-readable storage media or computer program products provided above can be applied to the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0049] These and other aspects of the present application will become more readily apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a schematic diagram of a network architecture of an IMT system and a satellite system provided in an embodiment of the present application;

[0051] FIG2 is a schematic diagram of the architecture of an IMT system provided in an embodiment of the present application;

[0052] FIG3 is a schematic diagram of a scenario in which an IMT system shares spectrum with a satellite system in both uplink and downlink, according to an embodiment of the present application;

[0053] FIG4 is a schematic flow chart of a spectrum-sharing communication method provided in an embodiment of the present application;

[0054] FIG5 is a schematic diagram of adjusting the receiving / transmitting beam direction to reduce interference according to an embodiment of the present application;

[0055] FIG6 is a schematic diagram of the position of a satellite relative to a base station in a three-dimensional coordinate system provided by an embodiment of the present application;

[0056] FIG7 is a schematic flow chart of a spectrum-sharing communication method provided in an embodiment of the present application;

[0057] FIG8 is a schematic diagram of the composition of an IMT device provided in an embodiment of the present application;

[0058] FIG9 is a schematic diagram showing the composition of an IMT device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0059] For ease of understanding, some examples of concepts related to the embodiments of this application are provided for reference as follows:

[0060] IMT: Taking IMT2000 as an example, IMT-2000 is a large-scale system with seamless global coverage and global roaming, encompassing satellite mobile communications, land mobile communications, and cellular mobile communications such as cordless phones. It can provide the public with a variety of broadband information services that were previously unavailable, such as images, music, web browsing, and video conferencing. IMT-2000 is a true "broadband multimedia global digital mobile phone technology" and is compatible with improved Global System for Mobile Communications (GSM) networks.

[0061] ITU: A United Nations agency responsible for information and communication technology affairs. It is responsible for allocating and managing global radio spectrum and satellite orbit resources, formulating global telecommunication standards, providing telecommunication assistance and promoting telecommunication development.

[0062] Non-geostationary satellite orbit (NGSO): A satellite other than a geostationary satellite. A geostationary satellite, also known as a 24-hour orbit, has an orbital plane that coincides with the equatorial plane. The satellite's orbital period is equal to the Earth's rotation period in inertial space, and its direction is also consistent with it. This means the satellite's position relative to the ground remains unchanged, so this type of orbit is also called a geostationary satellite orbit. In non-geostationary satellite mobile communication systems, due to the high-speed movement of satellites relative to the ground and the mobility of user terminals, a single communication process may undergo multiple handoffs, including inter-beam handoffs between the same satellite spot beam, inter-satellite handoffs between adjacent satellites, and gateway handoffs between different gateways.

[0063] The linearly constrained minimum variance (LCMV) criterion is an array signal processing method used to estimate the interference and noise components introduced into the array signal. The algorithm extracts relevant information from the data received by the array and uses this information to perform interference suppression.

[0064] Channel State Information (CSI): In wireless communications, CSI is the channel property of a communication link. It describes the signal attenuation factor along each transmission path, specifically the value of each element in the channel gain matrix H. This information includes information such as signal scattering, environmental fading (multipath fading or shadowing fading), and distance power decay. CSI enables communication systems to adapt to current channel conditions, ensuring high-reliability and high-speed communication in multi-antenna systems.

[0065] Frequency-division duplexing (FDD) is a type of full-duplex communication technology used in mobile communication systems. FDD uses two independent frequency channels to transmit downlink and uplink data simultaneously.

[0066] Time-division duplexing (TDD): It is a full-duplex communication technology used in mobile communication systems. Corresponding to FDD, TDD is a technology that uses the same frequency channel to transmit downlink data and uplink data in different time slots.

[0067] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0068] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0069] In addition, in this application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0070] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0071] The embodiments of the present application are applicable to a network architecture in which an IMT system and a satellite system share spectrum. FIG1 is a schematic diagram of a network architecture 1000 of an IMT system 10 and a satellite system 20 , wherein the IMT system 10 and the satellite system 20 can share spectrum.

[0072] The IMT system 10 may include a radio access network (RAN) 100 and a core network 200 , wherein the RAN 100 includes at least one RAN node 110 and may also include at least one terminal 120 .

[0073] Satellite system 20, which can also be referred to as a satellite mobile communication system, includes a space segment, a ground segment, and a user segment. The space segment includes satellites (mobile communication satellites) 221, the ground segment may include multiple ground stations or gateways 223, and the user segment may include various types of satellite system terminals 222 deployed on land, at sea, and in the air.

[0074] Satellite system 20 enables satellite mobile communications. Satellite mobile communications can be understood as communications between radio communication stations on Earth (both on the ground and in the lower atmosphere) using satellites 221 as relays. Gateway 223 forms the link formed by the satellite system. Its primary function is to provide an interface between the satellite mobile communications system and terrestrial fixed and mobile communication networks, enabling interconnection. It also controls access to the satellite mobile communications system by satellite terminal devices 222 and ensures uninterrupted signals during communications.

[0075] FIG2 shows the architecture diagram of the IMT system 10. The RAN node 110 may be 110a and 110b (collectively referred to as 110) in FIG2 . The RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment (not shown in FIG2 ). The terminal 120 may be 120a-120j (collectively referred to as 120) in FIG2 . The terminal 120 is wirelessly connected to the RAN node 110. Terminals and RAN nodes may be connected to each other via wired or wireless connections. The IMT system 10 may also include a core network. The RAN node 110 is wirelessly or wiredly connected to the core network 200. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and distinct physical devices, or they may be a single physical device that integrates the logical functions of the core network equipment and the logical functions of the RAN node. The IMT system 10 may also include the Internet.

[0076] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, or a future radio access system defined in the 3rd Generation Partnership Project (3GPP). RAN100 may also include two or more of the aforementioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0077] The RAN node 110, also known as a radio access network device, a RAN entity, or an access node, is used to help terminals access the communication system wirelessly. In one application scenario, the RAN node 110 can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a fifth-generation (5G) mobile communication system, a next-generation base station in a sixth-generation (6G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (such as 110a in Figure 2), a micro base station, or an indoor station (such as 110b in Figure 2), or a relay node or a donor node.

[0078] In another application scenario, the cooperation of multiple RAN nodes 110 can be used to help the terminal achieve wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part or all of the physical layer. For detailed descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of 3GPP. The RU can be used to implement the transmission and reception functions of radio frequency signals. The CU and DU can be two independent RAN nodes, or they can be integrated into the same RAN node, for example, integrated into the baseband unit (BBU). The RU may be included in a radio frequency device, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU may be further divided into two types of RAN nodes: the CU-control plane and the CU-user plane.

[0079] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU may be called an open CU (O-CU), a DU may be called an open DU (O-DU), and a RU may be called an open RU (O-RU). The RAN node in the embodiments of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with the corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For ease of description, the following description takes a base station as an example of a RAN node.

[0080] In IMT system 10 and satellite system 20, IMT terminal 120 and satellite terminal 222 are devices with wireless transceiver capabilities. In IMT system 10, terminal 120 can send signals to or receive signals from a base station. In satellite system 20, terminal 222 can send signals to or receive signals from satellite 221.

[0081] IMT terminal 120 and satellite terminal 222 may also be referred to as terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, aircraft, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0082] In IMT system 10, base stations and terminals can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0083] In the IMT system 10, the roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 2 can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, for base station 110a, 120i is a terminal, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 2 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 2 can be referred to as communication devices with terminal functionality.

[0084] Communication between base stations and terminals, between base stations, and between terminals can be carried out through authorized spectrum, unlicensed spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz simultaneously. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0085] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem that includes the base station functions. The control subsystem that includes the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or modem) in the terminal, or by a device that includes the terminal functions.

[0086] In this application, the base station sends downlink signals or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the base station within the cell covered by the base station. The cell covered by the base station with which the terminal has established a wireless connection is called the serving cell of the terminal. When the terminal communicates with the serving cell, it will also be interfered with by signals from neighboring cells.

[0087] With the growth of Internet traffic, the demand for access to massive terminals, and the high latency and reliability requirements of industrial control and telemedicine, higher requirements are being placed on 5G communication technology. With the rapid development of 5G technology, 6G technology is also coming, and 6G technology involves the diverse needs of various industries. In order to meet the diverse scenario requirements of 6G and significantly increase network capacity, 6G requires more spectrum to meet diverse business needs. However, according to the current ITU spectrum resource allocation, spectrum resources have basically been allocated. If the IMT system 10 needs more spectrum, the IMT system 10 must share spectrum resources with other systems, such as the IMT system 10 and the satellite system 20.

[0088] The spectrum resource sharing between the IMT system 10 and the satellite system 20 mainly includes two scenarios.

[0089] Scenario 1, as shown in (a) of Figure 3 , is a schematic diagram of a scenario in which the uplink and downlink of the IMT system 10 share spectrum with the uplink of the satellite system 20. When the uplink and downlink of the IMT system 10 share spectrum with the uplink of the satellite system 20, the uplink and downlink communications of the IMT system 10 may interfere with the uplink signal received by the satellite 221. As shown in (a) of Figure 3 , in the IMT system 10, the base station 110 can send a downlink signal ① to the UE 120 connected to the base station 110, and the UE 120 can also send an uplink signal ② to the base station 110. In the satellite system 20, the satellite terminal 222 connected to the satellite 221 can send an uplink signal ③ to the satellite 221, and the gateway 223 connected to the satellite 221 can send an uplink signal ④ to the satellite 221. The downlink signal ① may generate an interference signal ⑤ on the uplink signal ③ / uplink signal ④, and the uplink signal ② may also generate an interference signal ⑥ on the uplink signal ③ / uplink signal ④.

[0090] Scenario 2, as shown in (b) of Figure 3 , is a schematic diagram of a scenario in which the uplink and downlink of the IMT system 10 share spectrum with the downlink of the satellite system 20. When the uplink and downlink of the IMT system 10 share spectrum with the downlink of the satellite system 20, the downlink signal transmitted by the satellite 221 may interfere with the uplink and downlink communications of the IMT system 10. As shown in (b) of Figure 3 , in the IMT system 10, the base station 110 may receive an uplink signal ② from the UE 120 connected to the base station 110, and the UE 120 may also receive a downlink signal ① from the base station 110. In the satellite system 20, the satellite 221 may transmit a downlink signal ⑦ to the satellite terminal 222 connected to the satellite 221, and the satellite 221 may also transmit a downlink signal ⑧ to the gateway 223 connected to the satellite 221. The downlink signal ⑦ may generate an interference signal ⑨ on the downlink signal ① / uplink signal ②, and the downlink signal ⑧ may also generate an interference signal ⑩ on the downlink signal ① / uplink signal ②.

[0091] Considering that 6G requires the construction of a converged, air-space-ground network that spans regions, airspaces, and oceans to achieve truly seamless global coverage, the convergence of 6G networks promotes the convergence of spectrum usage. To improve spectrum efficiency, the flexible and dynamic sharing of spectrum between different standards on demand is the main evolutionary direction and vision for future spectrum resource utilization.

[0092] Furthermore, future satellite systems may also serve as part of or complement the IMT system to achieve seamless global coverage of 6G. However, regardless of the approach, as long as the satellite system 20 and the IMT system 10 share a certain spectrum segment, co-channel interference will inevitably occur between the two. Therefore, to further improve spectrum utilization efficiency, co-channel interference mitigation technology between the satellite system 20 and the IMT system 10 requires further research.

[0093] According to radio frequency regulations, when the IMT service is used as a later-entered service, the IMT system 10 needs to ensure that the interference with the service of the original satellite system 20 meets certain constraints to ensure the normal operation of the original service.

[0094] For example, in a scenario where the uplink and downlink of the IMT system 10 and the uplink of the satellite system 20 share the same spectrum, if the IMT system 10 is a late-entering system, the interference of the IMT system 10 on the satellite system 20 is usually limited by means of a spectrum emission mask (SEM). For example, by constraining the carrier power within the operating frequency band of the base station or terminal in the IMT system 10 and the spurious spectrum emission outside the band, the interference of the IMT system 10 on the satellite system 20 is ensured to be below a certain threshold, thereby ensuring that the satellite system 20 can operate normally.

[0095] However, the spectrum template is obtained based on the worst-case scenario where IMT does not interfere with the satellite. It is time-invariant and therefore not applicable to non-geostationary orbit (NGSO) satellite scenarios. In this scenario, the positional relationship between the IMT devices (e.g., base stations / terminals) in the NGSO and IMT systems 10 is time-varying. For example, a satellite in low Earth orbit (LEO) is approximately 500km to 1200km high, and its orbital period is approximately one to two hours. As the satellite orbits the Earth, its beam may be directed toward land, ocean, or uninhabited areas. Obviously, when the satellite beam covers different areas, the interference from the IMT device to the satellite will also vary. If the null direction of the IMT device's transmit beam is directly opposite the main lobe of the satellite's receive beam, the IMT system will have less interference with the satellite's uplink. If the satellite's receive beam and the main lobe of the IMT device's transmit beam are aligned, the IMT device's uplink and downlink will cause strong interference to the satellite's uplink. If the null direction of the IMT device's receive beam faces the satellite's transmit beam, the satellite will cause less interference to the IMT system's uplink and downlink. However, if the satellite's receive beam aligns with the main lobe of the IMT device's transmit beam, the IMT device will cause strong interference to the satellite's uplink.

[0096] For example, as shown in (a) of FIG3 , when base station 110 and UE 120 perform uplink and downlink communications, the main lobes of the base station 110's transmit beam and the UE 120's receive beam are aligned, or the main lobes of the base station 110's receive beam and the UE 120's transmit beam are aligned for uplink and downlink communications. When the uplink and downlink of the IMT system 10 share spectrum with the uplink of satellite 221, the downlink signal of base station 110 may generate interference signal ⑤ on the uplink reception of satellite 221 (③ / ④), and the uplink signal of UE 120 may generate interference signal ⑥ on the uplink reception of satellite 221 (③ / ④). In particular, when the main lobes of the satellite 221's receive beam and the UE 120's transmit beam or the base station 110's transmit beam are aligned, the uplink signal of UE 120 or the downlink signal of base station 110 will cause strong interference to the uplink reception of satellite 221.

[0097] For example, as shown in FIG3(b), when base station 110 and UE 120 perform uplink and downlink communications, the main lobes of base station 110's transmit beam and UE 120's receive beam are aligned, or the main lobes of base station 110's receive beam and UE 120's transmit beam are aligned. When the uplink and downlink of IMT system 10 share spectrum with the downlink of satellite 221, downlink signal ⑦ from satellite 221 may generate interference signal ⑨ on uplink reception ② of base station 110 in IMT system 10. Downlink signal ⑦ from satellite 221 may also generate interference signal ⑩ on downlink reception ① of UE 120 in IMT system 10. In particular, when the main lobes of satellite 221's transmit beam and UE 120's receive beam or base station 110's receive beam are aligned, the downlink signal from satellite 221 will cause strong interference to UE 110's downlink reception or base station 110's uplink reception.

[0098] Therefore, the present application proposes a communication method in a scenario where a satellite system and an IMT system share a spectrum. The IMT device in the IMT system can exchange satellite configuration information through a gateway in the satellite system. For example, the satellite configuration information includes satellite number information, timestamp information, and ephemeris information. The IMT device determines the current position of the satellite relative to the IMT device, the satellite beam pointing, and the satellite's motion trajectory based on the satellite configuration information. The IMT device can further determine the sending mode when the IMT device sends a communication signal or the receiving mode when receiving a communication signal based on the current position of the satellite relative to the IMT device, the satellite beam pointing, and the satellite's motion trajectory, so as to reduce interference from the satellite system to the IMT system, or reduce interference from the IMT system to the satellite system. The IMT device can be a terminal device or a network device.

[0099] The following is an introduction to the embodiments of the present application.

[0100] As shown in Figure 4, it is a schematic flow chart of a shared spectrum communication method provided in an embodiment of the present application. The method is applied to an IMT system, where the IMT system and a satellite system share a spectrum. The method includes the following process.

[0101] 401. The IMT device receives satellite configuration information, which includes satellite number information and timestamp information, and then executes step 402 or step 403.

[0102] In some embodiments, the uplink and downlink of the IMT system and the downlink of the satellite system share a spectrum, or the uplink and downlink of the IMT system and the uplink of the satellite system share a spectrum.

[0103] In some embodiments, the IMT device is a network device or a terminal device.

[0104] When the IMT device is a network device, such as a base station, the IMT device receiving satellite configuration information may include: the base station receiving configuration information sent by a satellite system gateway. The gateway may periodically interact with the satellite to obtain timestamp information corresponding to the satellite number information, and feed the satellite number information and timestamp information back to the base station.

[0105] In some embodiments, the configuration information also includes satellite ephemeris information. Alternatively, when the IMT device is a network device, the network device locally stores the correspondence between satellite number information and ephemeris information. For example, when the network device is a base station, after determining the satellite number information based on the configuration information, the base station can further determine the satellite ephemeris information based on this correspondence. This design of storing satellite ephemeris locally in the base station can reduce information exchange between the satellite gateway and the base station.

[0106] For example, the satellite gateway and the base station may receive or exchange satellite configuration information via an Xn interface of the base station or other interfaces. The Xn interface may be an interface in the 5G protocol.

[0107] The satellite number information may be, for example, Starlink-1441 or other numbers, which are only given as examples.

[0108] The satellite's timestamp information is usually a complete and verifiable data that can indicate that a piece of data existed at a specific point in time.

[0109] Satellite ephemeris information, also known as satellite ephemeris or two-line orbital data (TLE), is an expression used to describe the position and velocity of a space object. It can also be called a two-line orbital data system. The format of the satellite ephemeris, also known as the TLE format (two-line orbital element set format), can include two lines, each containing 69 characters, including 0 to 9, A to Z (uppercase), spaces, periods, and positive and negative signs. Other characters are meaningless. Satellite ephemeris can accurately calculate, predict, depict, and track the time, position, and velocity of satellites and flying objects. It can express the precise parameters of flying objects such as celestial bodies, satellites, spacecraft, missiles, and space debris. It can place flying objects in three-dimensional space and use time to depict the past, present, and future of celestial objects. Typically, satellite ephemeris time is calculated according to Coordinated Universal Time (UTC) and can be updated regularly.

[0110] In some embodiments, the ephemeris information carried in the configuration information may be part or all of the two-row orbital data of the satellite, which is not limited in this application.

[0111] In some embodiments, the configuration information received by the IMT device from the satellite may be broadcast information received by the IMT device from the satellite, where the broadcast information carries the configuration information.

[0112] In some embodiments, if the IMT device is a base station, the satellite gateway may periodically transmit satellite configuration information to the base station. The configuration information transmitted in each period may vary as the timestamp changes. Alternatively, the gateway may transmit the satellite configuration information to the base station upon receiving a trigger signal. Alternatively, the base station may request the satellite configuration information from the gateway upon receiving a trigger signal. This application does not limit the timing of transmission of configuration information.

[0113] In some embodiments, if the IMT device is a network device, different network devices can also exchange satellite configuration information. Specifically, after receiving satellite configuration information, the network device can send the configuration information to other network devices. The configuration information is used by other network devices to perform interference mitigation between the network device and the satellite system based on the configuration information before sending or receiving communication signals. For example, in 5G, if the network device is a base station, different base stations can exchange satellite configuration information via an Xn interface or other interface. In this way, multiple base stations can obtain satellite configuration information, and before sending or receiving communication signals, multiple base stations can perform step 402 to mitigate interference between the base station and the satellite system.

[0114] In some embodiments, if the IMT device is a network device, the network device may further transmit configuration information to a terminal device within the coverage area of ​​the network device. The configuration information is used by the terminal device to perform interference mitigation between the terminal device and the satellite system according to the configuration information before sending or receiving a communication signal. For example, in 5G, when the network device is a base station, after the base station transmits satellite configuration information to a UE within the coverage area of ​​the base station, the UE may also perform step 402 to perform interference mitigation between the UE and the satellite system before sending or receiving a communication signal.

[0115] In some embodiments, if the IMT device is a terminal device, when the terminal device receives configuration information sent by a network device (such as a base station), the terminal device may also send the configuration information to other terminal devices to share the configuration information between terminal devices.

[0116] The network device sends configuration information to the terminal device. For example, when the base station sends downlink control information (DCI) to the UE, the DCI carries the configuration information and is sent to the UE.

[0117] 402. The IMT device sends a communication signal. The communication signal is sent after interference processing between the IMT system and the satellite system is performed based on the position and trajectory of the satellite relative to the IMT device. The position and trajectory of the satellite are determined based on the number information, timestamp information, and ephemeris information of the satellite.

[0118] In some embodiments, the communication signal may be an uplink signal sent from a terminal device in the IMT system to a network device, or may be a downlink signal sent from a network device in the IMT system to a terminal device.

[0119] In some embodiments, the communication signal is sent after interference processing between the IMT system and the satellite system is performed based on the satellite's position, operating speed and operating trajectory relative to the IMT device. The satellite's position, operating speed and operating trajectory are determined based on the numbering information, timestamp information and satellite ephemeris information.

[0120] For example, if the uplink and downlink of the IMT system and the uplink of the satellite share the spectrum, as described above for (a) in Figure 3, when the IMT device is a base station, the downlink signal ① sent by the base station may generate an interference signal ⑤ to the uplink reception ③ / ④ of the satellite. In this regard, in the present application, when the base station sends a downlink signal, the interference processing method before the base station sends the downlink signal can be determined according to the configuration information. The base station can first determine the satellite's position, running speed and running trajectory relative to the base station itself based on the numbering information, timestamp information and the satellite's ephemeris information. The base station then determines the interference processing method before the base station sends the downlink signal based on the satellite's position, running speed and running trajectory relative to the base station itself, so as to reduce the interference of the downlink signal sent by the base station on the uplink signal received by the satellite.

[0121] For example, if the uplink and downlink of the IMT system and the uplink of the satellite share the spectrum, as described above for (a) in Figure 3, when the IMT device is a UE, the uplink signal ② sent by the UE may generate an interference signal ⑥ to the uplink reception ③ / ④ of the satellite. In this regard, in the present application, when the UE sends an uplink signal, the interference processing method before the UE sends the uplink signal can be determined according to the configuration information. The UE can first determine the satellite's position, running speed and running trajectory relative to the UE itself based on the numbering information, timestamp information and the satellite's ephemeris information. The UE then determines the interference processing method before the UE sends the uplink signal based on the satellite's position, running speed and running trajectory relative to the UE itself, so as to reduce the interference of the UE's uplink signal on the satellite's reception of the uplink signal.

[0122] In some embodiments, when the IMT device is a network device, interference processing before the network device sends a communication signal includes at least one of the following: adjusting the transmission beam pointing of the communication signal, adjusting the transmission beam width of the communication signal, adjusting the downtilt angle of the antenna transmitting the communication signal, and adjusting the transmission power of the communication signal. The present application is not limited to these three interference processing methods, and other interference processing methods such as interference avoidance, interference reduction, or interference elimination can also be used.

[0123] For example, when the IMT device is a base station, if the base station wants to send a downlink signal, before sending the downlink signal, the base station can reduce the uplink interference to the satellite system by adjusting at least one of the following processing methods: adjusting the transmission beam direction and beam width of the downlink signal, adjusting the downtilt angle of the antenna sending the downlink signal, and adjusting the transmission power of the downlink signal.

[0124] In some embodiments, when the IMT device is a terminal device, interference processing performed by the terminal device before transmitting a communication signal includes at least one of: adjusting the transmit power of the communication signal, adjusting the transmit beam direction of the communication signal, and adjusting the transmit beam width of the communication signal. This application does not limit the interference processing method, and other interference processing methods such as interference avoidance, interference reduction, or interference elimination may also be used.

[0125] For example, when the IMT device is a UE, if the UE wants to send an uplink signal, before sending the uplink signal, the UE can reduce the uplink interference to the satellite system by adjusting at least one of the processing methods such as the transmission power, transmission beam direction, and beam width of the uplink signal.

[0126] In some embodiments, the interference processing before sending the communication signal is to adjust the transmission beam direction of the communication signal, adjust the transmission beam width of the communication signal, or adjust the transmission beam direction and beam width of the communication signal, so that the null direction or trough direction of the transmission beam points to the direction where the satellite is located.

[0127] For example, (a) in Figure 5 shows a schematic diagram of adjusting the direction of the transmission beam to reduce interference provided by an embodiment of the present application. When the IMT device is a base station, if the base station wants to send a downlink signal ①, before sending the downlink signal ①, the base station can adjust the direction of the transmission beam of the downlink signal ①, the transmission beam width of the downlink signal ①, or adjust the direction of the transmission beam and the beam width of the downlink signal ①, so as to point the null direction or trough direction P of the transmission beam 51 of the downlink signal ① to the direction where the satellite is located. In this way, when the base station sends the downlink signal ①, the intensity of the interference signal ⑤ generated by the satellite system receiving the uplink signal ③ / ④ is relatively small, which can suppress the interference between the IMT system and the satellite system.

[0128] When the IMT device is a UE, if the UE is to transmit an uplink signal ②, before transmitting the uplink signal ②, the UE can adjust the transmit beam direction of the uplink signal ②, the transmit beam width of the uplink signal ②, or adjust the transmit beam direction and beam width of the uplink signal ②, so that the null direction or trough direction Q of the transmit beam 52 of the uplink signal ② is directed toward the direction of the satellite. In this way, the intensity of the interference signal ⑥ generated by the UE transmitting the uplink signal ② on the satellite system receiving the uplink signal ③ / ④ is reduced, thereby suppressing interference between the IMT system and the satellite system.

[0129] 403. The IMT device receives a communication signal after interference processing between the IMT system and the satellite system is performed based on the position and trajectory of the satellite relative to the IMT device. The position and trajectory of the satellite are determined based on the number information, timestamp information, and ephemeris information of the satellite.

[0130] In some embodiments, the communication signal may be an uplink signal received by a network device in an IMT system from a terminal device, or may be a downlink signal received by a terminal device in an IMT system from a network device.

[0131] In some embodiments, the communication signal is received after interference processing between the IMT system and the satellite system based on the satellite's position, operating speed and operating trajectory relative to the IMT device, and the satellite's position, operating speed and operating trajectory are determined based on the numbering information, timestamp information and satellite ephemeris information.

[0132] For example, if the uplink and downlink of the IMT system and the downlink of the satellite share a spectrum, as described above for (b) in Figure 3, when the UE in the satellite system is within the coverage of the base station of the IMT system, when the IMT device is a base station, the downlink signal ⑦ sent by the satellite to the satellite terminal may generate an interference signal ⑨ to the downlink signal ① / uplink signal ② between the base station and the UE of the IMT system, and the downlink signal ⑧ sent by the satellite to the gateway may generate an interference signal ⑩ to the downlink signal ① / uplink signal ② between the base station and the UE of the IMT system. In this regard, in the present application, for the base station in the IMT system, when the base station receives the uplink signal ②, the interference processing method before the base station receives the uplink signal ② can be determined according to the configuration information. The base station can first determine the satellite's azimuth, running speed, and running trajectory relative to the base station itself based on the number information, timestamp information, and satellite ephemeris information. The base station then determines the interference processing method before the base station receives the uplink signal ② based on the satellite's azimuth, running speed, and running trajectory relative to the base station itself, so as to reduce the interference of the downlink signal ⑦ / ⑧ sent by the satellite on the uplink signal received by the base station.

[0133] For a UE in an IMT system, when receiving downlink signal ①, the interference handling method before the UE receives downlink signal ① can be determined based on configuration information. The UE can first determine the satellite's position, speed, and trajectory relative to the UE based on the satellite's number information, timestamp information, and satellite ephemeris information. The UE then determines the interference handling method before receiving the downlink signal based on the satellite's position, speed, and trajectory relative to the UE itself, thereby reducing interference from downlink signals ⑦ / ⑧ transmitted by the satellite on the UE's downlink signal reception.

[0134] In some embodiments, when the IMT device is a network device, interference processing performed by the network device before receiving a communication signal includes at least one of the following: adjusting the receiving beam pointing direction of the communication signal, adjusting the receiving beam width of the communication signal, and adjusting the downtilt angle of the antenna receiving the communication signal. The present application is not limited to these three interference processing methods, and other interference processing methods such as interference avoidance, interference reduction, or interference elimination may also be used.

[0135] For example, when the IMT device is a base station, if the base station wants to receive an uplink signal, before receiving the uplink signal, the base station can reduce the interference of the satellite system on the base station's uplink reception by adjusting at least one of the following processing methods: adjusting the receiving beam direction and beam width of the uplink signal, adjusting the downtilt angle of the antenna receiving the uplink signal, etc.

[0136] In some embodiments, when the IMT device is a terminal device, interference processing performed by the terminal device before receiving a communication signal includes at least one of: adjusting the receiving beam direction of the communication signal and adjusting the receiving beam width of the communication signal. This application does not limit the interference processing method, and other interference processing methods such as interference avoidance, interference reduction, or interference elimination may also be used.

[0137] For example, when the IMT device is a UE, if the UE wants to receive a downlink signal, before receiving the downlink signal, the UE can reduce the downlink reception interference of the satellite system on the UE by adjusting at least one of the processing methods such as the receiving beam direction and the receiving beam width of the downlink signal.

[0138] In some embodiments, the interference processing before receiving the communication signal is to adjust the receiving beam direction of the communication signal, adjust the receiving beam width of the communication signal, or adjust the receiving beam direction and beam width of the communication signal, so that the null direction or trough direction of the receiving beam points to the direction where the satellite is located.

[0139] For example, (b) in Figure 5 shows a schematic diagram of adjusting the receiving beam pointing to reduce interference provided by an embodiment of the present application. When the IMT device is a base station, if the base station wants to receive an uplink signal ②, before receiving the uplink signal ②, the base station can adjust the receiving beam pointing of the uplink signal ②, or adjust the receiving beam width of the uplink signal ②, or adjust the receiving beam pointing and beam width of the uplink signal ②, so as to point the null direction or trough direction R of the receiving beam 53 of the uplink signal ② to the direction where the satellite is located. In this way, when the base station receives the uplink signal ②, the intensity of the interference signal ⑨ of the downlink signal ⑦ / ⑧ of the satellite to the uplink signal ② received by the base station is relatively small, which can suppress the interference of the satellite system to the IMT system.

[0140] When the IMT device is a UE, if the UE intends to receive downlink signal ①, before receiving downlink signal ①, the UE can adjust the receiving beam direction of downlink signal ①, adjust the receiving beam width of downlink signal ①, or adjust both the receiving beam direction and beam width of downlink signal ①, so that the null direction or trough direction S of receiving beam 54 of downlink signal ① is directed toward the direction of the satellite. In this way, when the UE receives downlink signal ①, the intensity of interference signal 10 from downlink signal ⑦ / ⑧ of the satellite system is reduced, thereby suppressing interference from the satellite system to the IMT system.

[0141] In the embodiments of the present application, the IMT device calculates the satellite's position information relative to the IMT device, the satellite's operating speed, and the satellite's operating trajectory, etc., and reference may be made to the implementation methods in the prior art. In some embodiments, the network equipment and terminal devices in the IMT system calculate the satellite's position information, operating speed, and operating trajectory in the same manner.

[0142] For example, IMT equipment can obtain the satellite's six Kepler parameters based on the satellite's number and ephemeris information, and determine the satellite's position relative to the IMT equipment, the satellite's speed, and trajectory based on the six Kepler parameters and the satellite's timestamp information. The six Kepler parameters include the satellite's orbital semi-major axis, orbital eccentricity, orbital inclination, right ascension of the ascending node, argument of perigee, and time of perigee.

[0143] In some embodiments, the satellite's position information relative to the IMT device can be understood as the horizontal azimuth information, vertical azimuth information and distance of the satellite relative to the IMT device, or other information that can directly or indirectly indicate the satellite's position information relative to the IMT device.

[0144] Figure 6 shows a schematic diagram of a satellite's position relative to a base station in a three-dimensional coordinate system. In Figure 6, the base station's location is used as the origin of the three-dimensional coordinate system, and the X, Y, and Z directions of the three-dimensional coordinate system are shown. Assuming the satellite is at point A, the horizontal azimuth angle (X) of the satellite relative to the base station can be referenced by a in Figure 6, and the vertical azimuth angle (b) of the satellite relative to the base station can be referenced by b in Figure 6. The satellite's position information relative to the base station includes the horizontal azimuth angle a and the vertical azimuth angle b.

[0145] In some embodiments, the satellite's trajectory can be the satellite's latitude and longitude coordinates at different timestamps, as well as the satellite's altitude / altitude relative to the Earth, or other information that can directly or indirectly indicate the satellite's relative position in a certain coordinate system. For example, the satellite's trajectory point corresponding to a certain timestamp is 30 degrees east longitude, 45 degrees north latitude, and 1200 km above sea level / altitude.

[0146] In some embodiments, if the IMT device adjusts the beam width, or adjusts the beam direction and beam width to reduce interference between the IMT system and the satellite system, it is equivalent to using beamforming to avoid interference between signals. For example, the signal-to-noise ratio maximization criterion or the linearly contrained minimum variance (LCMV) beamforming algorithm can be used to make the null or trough direction of the IMT device beamforming point to the direction where the satellite is located. In this way, the signal received by the IMT device from the satellite will cause less interference to the IMT system, or the signal sent by the IMT device will cause less interference to the satellite.

[0147] As can be seen above, in scenarios where satellite uplink or downlink spectrum is shared with an IMT system, an IMT device can determine the satellite system's relative position, speed, and trajectory. Assuming beamforming is used for interference mitigation, the satellite's beam pointing significantly determines the interference between the IMT system and the satellite. For example, in scenarios where satellite uplink and an IMT system share spectrum, the satellite's receive beam pointing significantly determines the interference from the IMT system to the satellite. If the IMT base station is located in the null direction of the satellite beam or in the trough direction of the satellite beam, even if the main lobe of the IMT system's beam is directed toward the satellite system, the interference from the IMT system to the satellite system is minimal. Furthermore, the satellite's beam pointing can be adjusted in real time. While knowing the satellite's position can reduce interference to the satellite system by adjusting the IMT device's beam pointing, this will, to a certain extent, reduce the capacity of the IMT system outside the satellite's 3dB bandwidth or in the trough direction of the satellite beam.

[0148] For example, a base station in an IMT system determines the satellite's relative position, speed, and trajectory. It adjusts the beam pointing or beamwidth of its transmit beam. For example, the base station's transmit beam's null direction or trough aligns with the trough of the satellite's receive beam, reducing interference with the satellite's uplink reception. However, because the base station does not determine the satellite's beam pointing, it does not know whether it is within the satellite's 3dB beamwidth. If the base station's interference with the satellite's receive beam is minimal, the base station does not need to consider interference with the satellite's receive beam and adjusts the pointing and beamwidth of its transmit beam. The base station can perform normal beamforming. However, if the base station considers interference with the satellite's uplink, it must avoid interference with the satellite's uplink when performing beamforming. If the base station adjusts the transmit beam pointing, the main lobe of the receive beam of the UE connected to the base station may not align with the main lobe of the base station's transmit beam. This degrades the link quality between the base station and the UE, impacting the base station's capacity and reducing the UE's signal quality.

[0149] Therefore, in an embodiment of the present application, the configuration information also includes the satellite's beam pointing information and the satellite antenna's 3dB beam width information.

[0150] The 3dB beamwidth of a satellite antenna refers to the half-power point beamwidth of the signal that a transmitting antenna can transmit. It is a technical indicator defined in accordance with the International Organization for Standardization (ISO) / International Electro Technical Committee (IEC) standards. It is an indicator used to measure the transmission capability of an antenna.

[0151] Specifically, an antenna has different radiation or reception capabilities in different directions in space, which is known as its directivity. Antenna directivity is typically measured using a radiation pattern. A radiation pattern typically has two or more lobes, the largest of which is called the main lobe, and the remaining lobes are called side lobes. The angle between the two half-power points of the main lobe is defined as the antenna pattern's beamwidth (beamwidth), also known as the half-power (angular) lobe width. The narrower the main lobe width, the better the directivity and the greater the interference rejection capability. In engineering, a 3dB lobe width is generally used to represent the main lobe width.

[0152] FIG7 is a flow chart of a method for sharing spectrum communication provided in an embodiment of the present application. The method includes the following process.

[0153] 701. The IMT device receives satellite configuration information, which includes satellite number information, timestamp information, satellite beam pointing information, and satellite antenna 3dB beam width information. Then, execute step 702 or step 703.

[0154] Illustratively, a base station in an IMT system receives satellite configuration information from a satellite gateway. The beam pointing information in the configuration information is indicated by the latitude and longitude information indicating that the satellite beam is pointing to the ground. For example, the satellite beam pointing information indicates 30 degrees east longitude and 0 degrees latitude. The 3dB beamwidth information of the satellite antenna in the configuration information is, for example, 3 degrees or other values. This application is merely illustrative.

[0155] 702. The IMT device sends a communication signal. The communication signal is sent after interference processing between the IMT system and the satellite system is performed based on the satellite's position relative to the IMT device, the trajectory, the satellite's beam pointing information, and the satellite's 3dB beam width information. The satellite's position, trajectory, the satellite's beam pointing information, and the satellite's 3dB beam width information are determined based on the numbering information, the timestamp information, the satellite's beam pointing information, the satellite's 3dB beam width information, and the satellite's ephemeris information.

[0156] Similar to the above embodiment, the ephemeris information may be stored locally in the IMT device, or sent by a satellite gateway to a base station of the IMT system.

[0157] In some embodiments, the communication signal is sent after interference processing between the IMT system and the satellite system based on the satellite's azimuth, operating speed and operating trajectory relative to the IMT device, the satellite's beam pointing information and the satellite antenna's 3dB beam width information. The satellite's azimuth, operating speed, operating trajectory, satellite's beam pointing information and the satellite antenna's 3dB beam width information are determined based on the numbering information, timestamp information, satellite's beam pointing information, satellite antenna's 3dB beam width information and satellite's ephemeris information.

[0158] For example, if the uplink and downlink of the IMT system and the uplink of the satellite share the spectrum, as described above for (a) in Figure 3, when the IMT device is a base station, the downlink signal ① sent by the base station may generate an interference signal ⑤ to the uplink reception ③ / ④ of the satellite. In this regard, in the present application, before sending the downlink signal, the base station can determine whether the base station is located within the 3dB beam coverage of the satellite antenna based on the current position of the satellite relative to the base station itself, the beam pointing information of the satellite, and the 3dB bandwidth information of the satellite antenna. If the base station determines that the base station is outside the 3dB bandwidth of the satellite antenna, the intensity of the interference signal ⑤ generated by the downlink signal ① sent by the base station to the uplink reception ③ / ④ of the satellite is small, and the base station does not need to perform interference processing / interference avoidance between the base station and the satellite system. If the base station determines that the base station is within the 3dB bandwidth of the satellite antenna, the downlink signal ① sent by the base station will generate a large intensity of the interference signal ⑤ generated by the uplink reception ③ / ④ of the satellite, and the base station needs to perform interference processing between the base station and the satellite system. The base station's interference handling method can be found in the description of the embodiment corresponding to FIG4 . Specifically, the base station can first determine the satellite's position, speed, and trajectory relative to the base station based on the satellite's number information, timestamp information, and ephemeris information. The base station then determines the interference handling method before transmitting downlink signals based on the satellite's position, speed, and trajectory relative to the base station, thereby reducing interference from the base station's downlink signals on the satellite's uplink signals.

[0159] In some embodiments, the configuration information is also used to predict the corresponding configuration information of the satellite at a future moment. For example, if the base station cannot obtain the satellite's configuration information in real time, the base station can determine the satellite's position information at a certain moment in the future based on a prediction algorithm. That is, the base station can combine the historical configuration information it has received to predict the satellite's future motion trajectory to determine the satellite's position information relative to the base station over a period of time in the future, thereby repeating the above-mentioned interference processing method over a period of time in the future. This application does not limit the calculation method or algorithm used by the base station to obtain future configuration information based on historical configuration information.

[0160] For example, if the uplink and downlink of the IMT system and the uplink of the satellite share the spectrum, as described above for (a) in Figure 3, when the IMT device is a UE, the uplink signal ② sent by the UE may generate an interference signal ⑥ to the uplink reception ③ / ④ of the satellite. In this regard, in the present application, before sending the uplink signal, the UE can determine whether the UE is within the 3dB beam coverage of the satellite antenna based on the current position of the satellite relative to the UE itself, the beam pointing information of the satellite, and the 3dB bandwidth information of the satellite antenna. If the UE determines that the base station is outside the 3dB bandwidth of the satellite antenna, the intensity of the interference signal ⑥ generated by the uplink signal ② sent by the UE to the uplink reception ③ / ④ of the satellite is small, and the UE does not need to perform interference processing / interference avoidance between the UE and the satellite system. If the UE determines that the UE is within the 3dB bandwidth of the satellite antenna, the intensity of the interference signal ⑥ generated by the uplink signal ② sent by the UE to the uplink reception ③ / ④ of the satellite is large, and the UE needs to perform interference processing between the base station and the satellite system. The UE's interference handling method can be found in the description of the embodiment corresponding to FIG4 . Specifically, the UE can first determine the satellite's position, speed, and trajectory relative to the UE based on the satellite's number information, timestamp information, and satellite ephemeris information. The UE then determines an interference handling method before transmitting an uplink signal based on the satellite's position, speed, and trajectory relative to the UE, thereby reducing interference caused by the UE's uplink signal on the satellite's uplink signal reception.

[0161] In some embodiments, when the UE is unable to obtain satellite configuration information in real time, the UE may determine the satellite's position information at a certain moment in the future based on a prediction algorithm. That is, the UE may combine historical configuration information already received to predict the satellite's future motion trajectory to determine the satellite's position information relative to the UE over a period of time in the future, thereby repeating the above-described interference processing method over a period of time in the future. This application does not limit the calculation method or algorithm used by the UE to obtain future configuration information based on historical configuration information.

[0162] 703. The IMT device receives a communication signal after interference processing between the IMT system and the satellite system is performed based on the satellite's position relative to the IMT device, its trajectory, the satellite's beam pointing information, and the satellite's 3dB beam width information. The satellite's position, trajectory, the satellite's beam pointing information, and the satellite's 3dB beam width information are determined based on the numbering information, the timestamp information, the satellite's beam pointing information, the satellite's 3dB beam width information, and the satellite's ephemeris information.

[0163] Similar to the above embodiment, the ephemeris information may be stored locally in the IMT device, or sent by a satellite gateway to a base station of the IMT system.

[0164] In some embodiments, the communication signal is received after interference processing between the IMT system and the satellite system based on the satellite's azimuth, operating speed, operating trajectory, satellite beam pointing information and satellite antenna's 3dB beam width information relative to the IMT device; the satellite's azimuth, operating speed, operating trajectory, satellite beam pointing information and satellite antenna's 3dB beam width information are determined based on numbering information, timestamp information, satellite beam pointing information, satellite antenna's 3dB beam width information and satellite ephemeris information.

[0165] For example, if the uplink and downlink of the IMT system and the downlink of the satellite share spectrum, as described above in (b) of Figure 3, when the UE in the satellite system is within the coverage range of the base station of the IMT system, when the IMT device is a base station, the downlink signal ⑦ sent by the satellite to the satellite terminal connected to the satellite may generate an interference signal ⑨ on the downlink signal ① / uplink signal ② between the base station and the UE of the IMT system, and the downlink signal ⑧ sent by the satellite to the gateway may generate an interference signal ⑩ on the downlink signal ① / uplink signal ② between the base station and the UE of the IMT system. In this regard, in the present application, for the base station in the IMT system, before receiving the uplink signal ②, the base station can determine whether the base station is within the 3dB beam coverage range of the satellite antenna based on the current position of the satellite relative to the base station itself, the satellite's beam pointing information, and the 3dB bandwidth information of the satellite antenna. If the base station determines that the base station is outside the 3dB bandwidth range of the satellite antenna, the intensity of the interference signal ⑨ generated by the satellite's downlink signal ⑦ / ⑧ on the base station's reception of the uplink signal ② is small, and the base station does not need to perform interference processing / interference avoidance between the base station and the satellite system. If the base station determines that it is within the 3dB bandwidth of the satellite antenna and that the satellite's downlink signals ⑦ / ⑧ generate a significant interference signal 9 on the base station's uplink signal ②, the base station may perform interference handling according to the description of the embodiment corresponding to FIG4 . Specifically, the base station may first determine the satellite's position, speed, and trajectory relative to the base station based on the satellite's number information, timestamp information, and ephemeris information. The base station then determines the interference handling method before receiving the uplink signal ② based on the satellite's position, speed, and trajectory relative to the base station, thereby reducing interference from the satellite's downlink signals ⑦ / ⑧ on the base station's uplink signal.

[0166] For a UE in an IMT system, before receiving a downlink signal ①, the UE may determine whether the UE is within the 3dB beam coverage of the satellite antenna based on the current position of the satellite relative to the UE itself, the satellite's beam pointing information, and the 3dB beamwidth information of the satellite antenna. If the UE determines that the UE is outside the 3dB beamwidth of the satellite antenna, the intensity of the interference signal ⑩ generated by the satellite's downlink signal ⑦ / ⑧ on the UE's reception of the downlink signal ① is relatively low, and the UE may not need to perform interference processing / interference avoidance between the UE and the satellite system. If the UE determines that the UE is within the 3dB beamwidth of the satellite antenna, the intensity of the interference signal ⑩ generated by the satellite's downlink signal ⑦ / ⑧ on the UE's reception of the downlink signal ① is relatively high, and the UE may perform interference processing according to the description of the embodiment corresponding to FIG4 . That is, the UE may first determine the satellite's position, operating speed, and operating trajectory relative to the UE itself based on the number information, timestamp information, and satellite ephemeris information. The UE then determines the interference processing method before the UE receives the downlink signal based on the satellite's position, operating speed, and operating trajectory relative to the UE itself, thereby reducing the interference of the satellite's downlink signal ⑦ / ⑧ on the UE's reception of the downlink signal.

[0167] In some embodiments, an IMT device (e.g., a base station / UE) in an IMT system may calculate whether the angle between the line between the IMT device itself and the satellite relative to the satellite beam pointing is greater than the 3dB beam width based on the current orientation of the satellite relative to itself, the satellite's beam pointing information, and the 3dB beam width information of the satellite antenna. If the calculation result indicates that the angle between the line between the IMT device itself and the satellite relative to the satellite beam pointing is not greater than the 3dB beam width, it is determined that the IMT device is within the 3dB beam coverage range. Conversely, if the calculation result indicates that the angle between the line between the IMT device itself and the satellite relative to the satellite beam pointing is greater than the 3dB beam width, it is determined that the IMT device is outside the 3dB beam coverage range.

[0168] This allows IMT devices in an IMT system to more accurately handle interference between the IMT device and the satellite system. Without the need for interference handling, IMT devices can increase their capacity and improve the quality of the channel links between IMT devices.

[0169] In this application, in order to ensure the certainty of the satellite position information obtained by the base station and UE in the IMT system, the satellite ground station or the gateway station can periodically (at intervals) send the satellite number information, timestamp information and ephemeris information to the base station in the IMT system. The interval time can be determined according to the actual system operation effect, and this application does not impose any restrictions.

[0170] It is understandable that in order to implement the above functions, the IMT device includes hardware and / or software modules corresponding to the execution of each function. In combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application in combination with the embodiments, but such implementation should not be considered to be beyond the scope of this application.

[0171] In this embodiment, the functional modules of the IMT device can be divided according to the above-mentioned method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into a single processing module. The above-mentioned integrated modules can be implemented in the form of hardware. It should be noted that the module division in this embodiment is illustrative and only represents a logical functional division. In actual implementation, other division methods may be used.

[0172] FIG8 shows a schematic diagram of a possible configuration of an IMT device 80 involved in the above embodiment, where each functional module is divided according to its function. As shown in FIG8 , the IMT device 80 may include a receiving unit 801 and a transmitting unit 802. The IMT device 80 may be a network device or a terminal device in an IMT system. For example, the network device is a base station, and the terminal device is a UE.

[0173] The receiving unit 801 may be used to support the IMT device 80 in executing the above steps 401, 403, 701, and 703, and / or other processes of the technology described herein.

[0174] The sending unit 802 may be configured to support the IMT device 80 in executing the above steps 402 and 702, and / or other processes for the technology described herein.

[0175] It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0176] The IMT device 80 provided in this embodiment is used to execute the above-mentioned shared spectrum communication method, and thus can achieve the same effect as the above-mentioned implementation method.

[0177] When an integrated unit is used, the IMT device 80 may include a processing module, a storage module, and a communication module. The processing module may be used to control and manage the operations of the IMT device 80. For example, it may be used to support the IMT device 80 in executing the steps related to the aforementioned interference handling process between the IMT system and the satellite system. The storage module may be used to support the IMT device 80 in storing program code and data. The communication module may be used to support communication between the IMT device 80 and other devices, such as wireless access devices or terminal devices.

[0178] The processing module may be used to implement a computing function, such as processing a computing task in the present application, such as determining an interference handling method based on configuration information. Alternatively, the processing module may not include a computing function, and the IMT device 80 further includes a computing module, which is used to implement the computing process in the present application, such as determining an interference handling method based on configuration information.

[0179] The processing module may be a processor or a controller. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, and so on. The storage module may be a memory. The communication module may specifically be a device that interacts with other electronic devices, such as a radio frequency circuit, a Bluetooth chip, or a Wi-Fi chip.

[0180] In one embodiment, when the processing module is a processor, the storage module is a memory, and the communication module is a transceiver, the IMT device involved in this embodiment may be an IMT device 90 having the structure shown in FIG. 9 .

[0181] An embodiment of the present application further provides a communication device, comprising one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and are configured to store computer program code, which includes computer instructions. When the one or more processors execute the computer instructions, the communication device executes the aforementioned related method steps to implement the shared spectrum communication method described in the aforementioned embodiment.

[0182] The communication device in this application may be an IMT device or a chip or module that performs the functions of an IMT device.

[0183] An embodiment of the present application further provides a computer storage medium storing computer instructions. When the computer instructions are executed on a communication device, the communication device executes the above-mentioned related method steps to implement the shared spectrum communication method in the above-mentioned embodiment.

[0184] An embodiment of the present application further provides a computer program product. When the computer program product is run on a communication device, it enables the computer to execute the above-mentioned related steps to implement the shared spectrum communication method executed by the communication device in the above-mentioned embodiment.

[0185] In addition, an embodiment of the present application also provides a device, which can specifically be a chip, component or module, and the device may include a connected processor and memory; wherein the memory is used to store computer-executable instructions, and when the device is running, the processor can execute the computer-executable instructions stored in the memory to enable the chip to execute the shared spectrum communication method performed by the IMT device in the above-mentioned method embodiments.

[0186] Among them, the electronic device, computer storage medium, computer program product or chip provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0187] Another embodiment of the present application provides a system, which may be an IMT system. The IMT system may include the above-mentioned wireless access device (such as a base station) and the above-mentioned at least one terminal device (such as a UE), and may be used to implement the above-mentioned shared spectrum communication method.

[0188] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0189] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0190] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0191] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0192] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0193] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method for sharing spectrum, characterized in that: The method is applied to an International Mobile Communications IMT system, where the IMT system shares a frequency spectrum with a satellite system, and the method comprises: Receiving satellite configuration information, wherein the configuration information includes satellite number information and timestamp information; Sending a communication signal, wherein the communication signal is sent after interference processing is performed between the IMT system and the satellite system according to the position and movement trajectory of the satellite relative to the IMT system; or receiving a communication signal, wherein the communication signal is received after interference processing is performed between the IMT system and the satellite system according to the position and movement trajectory of the satellite relative to the IMT system; The position and trajectory of the satellite are determined based on the numbering information, the timestamp information and the ephemeris information of the satellite.

2. The method according to claim 1, characterized in that The configuration information also includes the ephemeris information; or, the corresponding relationship between the numbering information and the ephemeris information is stored locally.

3. The method according to claim 2, characterized in that The communication signal is sent after interference processing between the IMT system and the satellite system is performed according to the azimuth, running speed and running trajectory of the satellite relative to the IMT system; Alternatively, the communication signal is received after interference processing between the IMT system and the satellite system is performed according to the azimuth, running speed and running trajectory of the satellite relative to the IMT system; The position, running speed and running track of the satellite are determined according to the numbering information, the timestamp information and the ephemeris information of the satellite.

4. The method according to any one of claims 1 to 3, characterized in that: The configuration information of the receiving satellite includes: The configuration information sent by the gateway of the satellite system is received.

5. The method according to any one of claims 1 to 4, characterized in that: The interference processing before sending the communication signal includes at least one of the following: adjusting the transmission beam pointing of the communication signal, adjusting the beam width of the communication signal, adjusting the downtilt angle of the antenna sending the communication signal, and adjusting the transmission power of the communication signal; The interference processing before receiving the communication signal includes at least one of the following: adjusting the receiving beam direction of the communication signal, adjusting the beam width of the communication signal, and adjusting the downtilt angle of the antenna receiving the communication signal.

6. The method according to any one of claims 1 to 3, characterized in that: The interference processing before sending the communication signal includes at least one of the following: adjusting the transmission power of the communication signal, the transmission beam direction of the communication signal, and the beam width of the communication signal; The interference processing before receiving the communication signal includes at least one of the following: adjusting the receiving beam direction of the communication signal, and adjusting the beam width of the communication signal.

7. The method according to claim 5 or 6, characterized in that: The interference processing before sending the communication signal is to adjust the transmission beam direction of the communication signal, adjust the transmission beam width of the communication signal, or adjust the transmission beam direction and beam width of the communication signal, so that the null direction or trough direction of the transmission beam points to the direction where the satellite is located; Alternatively, when the interference processing before receiving the communication signal is to adjust the receiving beam direction of the communication signal, adjust the receiving beam width of the communication signal, or adjust the receiving beam direction and beam width of the communication signal, the null direction or trough direction of the receiving beam points to the direction where the satellite is located.

8. The method according to any one of claims 1 to 7, characterized in that: The configuration information also includes beam pointing information of the satellite and 3dB beam width information of the satellite antenna.

9. The method according to claim 8, characterized in that The communication signal is sent after interference processing between the IMT system and the satellite system is performed according to the azimuth and trajectory of the satellite relative to the IMT system, the beam pointing information of the satellite, and the 3 dB beam width information of the satellite antenna; Alternatively, the communication signal is carried out in the interference between the IMT system and the satellite system according to the position of the satellite relative to the IMT system, the running track, the beam pointing information of the satellite, and the 3dB beam width information of the satellite antenna. Received after interference processing; The satellite's position, trajectory, beam pointing information of the satellite, and 3dB beam width information of the satellite antenna are determined based on the configuration information.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: The configuration information is sent to the network device, and the configuration information is used by the network device to perform interference processing between the network device and the satellite system according to the configuration information before sending or receiving a communication signal.

11. The method according to any one of claims 1 to 10, characterized in that: The method further comprises: The configuration information is sent to a terminal device, where the terminal device performs interference processing between the network device and the satellite system according to the configuration information before sending or receiving a communication signal.

12. The method according to any one of claims 1 to 11, characterized in that: The configuration information is also used to predict the corresponding configuration information of the satellite at a future time.

13. A communication device, characterized in that: The communication device is applied to an International Mobile Communications IMT system, the IMT system and a satellite system share a frequency spectrum, and the communication device includes: A receiving unit, configured to receive configuration information of a satellite, wherein the configuration information includes number information and timestamp information of the satellite; A sending unit, used to send a communication signal, wherein the communication signal is sent after interference processing is performed between the IMT system and the satellite system according to the azimuth and running trajectory of the satellite relative to the IMT system; or, the receiving unit is further used to receive a communication signal, wherein the communication signal is received after interference processing is performed between the IMT system and the satellite system according to the azimuth and running trajectory of the satellite relative to the IMT system; The position and trajectory of the satellite are determined based on the numbering information, the timestamp information and the ephemeris information of the satellite.

14. The communication device according to claim 13, characterized in that: The configuration information also includes the ephemeris information; or, the corresponding relationship between the numbering information and the ephemeris information is stored locally.

15. The communication device according to claim 14, characterized in that: The communication signal is sent after interference processing between the IMT system and the satellite system is performed according to the azimuth, running speed and running trajectory of the satellite relative to the IMT system; Alternatively, the communication signal is received after interference processing between the IMT system and the satellite system is performed according to the azimuth, running speed and running trajectory of the satellite relative to the IMT system; The position, running speed and running track of the satellite are determined according to the numbering information, the timestamp information and the ephemeris information of the satellite.

16. The communication device according to any one of claims 13 to 15, characterized in that: The receiving unit is used for: The configuration information is received from a ground station or a gateway station of the satellite system.

17. The communication device according to any one of claims 13 to 16, characterized in that: The interference processing before sending the communication signal includes at least one of the following: adjusting the transmission beam pointing of the communication signal, adjusting the beam width of the communication signal, adjusting the downtilt angle of the antenna sending the communication signal, and adjusting the transmission power of the communication signal; The interference processing before receiving the communication signal includes at least one of the following: adjusting the receiving beam direction of the communication signal, adjusting the beam width of the communication signal, and adjusting the downtilt angle of the antenna receiving the communication signal.

18. The communication device according to any one of claims 13 to 15, characterized in that: The interference processing before sending the communication signal includes at least one of the following: adjusting the transmission power of the communication signal, the transmission beam direction of the communication signal, and the beam width of the communication signal; The interference processing before receiving the communication signal includes at least one of the following: adjusting the receiving beam direction of the communication signal, and adjusting the beam width of the communication signal.

19. The communication device according to claim 17 or 18, characterized in that: The interference processing before sending the communication signal is to adjust the transmission beam direction of the communication signal, adjust the transmission beam width of the communication signal, or adjust the transmission beam direction and beam width of the communication signal, so that the null direction or trough direction of the transmission beam points to the direction where the satellite is located; Alternatively, the interference processing before receiving the communication signal is to adjust the receiving beam pointing of the communication signal, adjust the communication The receiving beam width of the signal, or when adjusting the receiving beam direction and beam width of the communication signal, the null direction or trough direction of the receiving beam points to the direction where the satellite is located.

20. The communication device according to any one of claims 13 to 19, characterized in that: The configuration information also includes beam pointing information of the satellite and 3dB beam width information of the satellite antenna.

21. The communication device according to claim 20, characterized in that: The communication signal is sent after interference processing between the IMT system and the satellite system is performed according to the azimuth and trajectory of the satellite relative to the IMT system, the beam pointing information of the satellite, and the 3 dB beam width information of the satellite antenna; Alternatively, the communication signal is received after interference processing between the IMT system and the satellite system is performed according to the azimuth and trajectory of the satellite relative to the IMT system, beam pointing information of the satellite, and 3 dB beam width information of the satellite antenna; The satellite's position, trajectory, beam pointing information of the satellite, and 3dB beam width information of the satellite antenna are determined based on the configuration information.

22. The communication device according to any one of claims 13 to 21, characterized in that: The sending unit is also used for: The configuration information is sent to the network device, and the configuration information is used by the network device to perform interference processing between the network device and the satellite system according to the configuration information before sending or receiving a communication signal.

23. The communication device according to any one of claims 13 to 22, characterized in that: The sending unit is also used for: The configuration information is sent to a terminal device, where the terminal device performs interference processing between the network device and the satellite system according to the configuration information before sending or receiving a communication signal.

24. The communication device according to any one of claims 13 to 23, characterized in that: The configuration information is also used to predict the corresponding configuration information of the satellite at a future time.

25. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 12.

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