A communication method, apparatus and system

Abstract

A communication method, apparatus and system. The method can be performed by a first network device or a component (e.g., a processor, a chip or a chip system) of the first network device. In the method, the first network device receives a first position from a second network device, the first position being a position of one or more subframes occupied by first information; determines a first offset and configures MBSFN subframes, the first offset being used to determine a second position, the second position being a position after the first position is offset by the first offset, and a first range being a position supporting the configuration of the MBSFN subframes, the position of the MBSFN subframes including the second position; and sends the first offset and first MBSFN configuration information to the second network device. Through the method, the second network device can send the first information on the MBSFN subframes, thereby avoiding time-frequency resource conflicts between the first information and CRS, and achieving spectrum sharing of NR and LTE.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a communication method, device and system. BACKGROUND

[0002] Spectrum sharing is a technology of sharing existing spectrum of long term evolution (LTE) with new radio (NR) signals or sharing new spectrum of NR with LTE signals, which can effectively improve spectrum utilization.

[0003] The cell reference signal (CRS) of LTE is transmitted in full bandwidth, and directly sharing the spectrum of LTE with NR signals will cause time-frequency resource conflict between LTE CRS and NR signals. At present, the LTE base station can send a LTE cell reference signal (CRS) pattern to the NR base station; the NR base station can avoid the time-frequency position of the LTE CRS to send data and the LTE CRS pattern to the NR terminal device according to the received LTE CRS pattern; in this way, the NR terminal device can parse the data of the time-frequency position except the time-frequency position of the LTE CRS according to the LTE CRS pattern, without parsing the data of the time-frequency position of the LTE CRS, thereby realizing spectrum sharing of LTE and NR.

[0004] Before the NR terminal device accesses the network, the NR terminal device cannot obtain the LTE CRS pattern. In this case, the LTE base station can configure part of the subframes as multicast / broadcast single frequency network (MBSFN) subframes, which can make the synchronization signal and physical broadcast channel block (SSB) of NR avoid the interference of the LTE CRS, so that the NR terminal device can also realize spectrum sharing of LTE and NR without the LTE CRS pattern.

[0005] However, the subframes supported by the protocol that can be configured as MBSFN in LTE are numbered #1, #2, #3, #6, #7, and #8. That is, the LTE base station can only configure part or all of the six subframes as MBSFN subframes, and the subframes occupied by NR SSB under 4 beams are numbered #0 and #1, which means that the subframes occupied by NR SSB cannot all correspond to MBSFN subframes (such as subframe #0), resulting in time-frequency resource conflicts between NR SSB and LTE CRS. Summary of the Invention

[0006] The embodiments of the present application provide a communication method, device, and system for avoiding time-frequency resource conflicts between NR SSB and LTE CRS in spectrum sharing.

[0007] In a first aspect, embodiments of the present application provide a communication method, which can be performed by a first network device or by a component of the first network device (such as a processor, chip, or chip system). In this method, the first network device receives a first position from a second network device, where the first position is the position of one or more subframes occupied by the first information; determines a first offset, where the first offset is used to determine a second position, where the second position is the position of the first position after being offset by the first offset, and the second position is within a first range, where the first range is a position supporting the configuration of a multicast / multicast single frequency network (MBSFN) subframe; configures an MBSFN subframe, where the position of the MBSFN subframe includes the second position; and sends the first offset and first MBSFN configuration information to the second network device, where the first MBSFN configuration information is used to determine the configuration status of the MBSFN subframe within the first range.

[0008] Optionally, the first network device and the second network device may provide network services of different standards for the terminal device. For example, the first network device may be a module or device for implementing an LTE network service function, and the second network device may be a module or device for implementing an NR network service function.

[0009] Through this method, the first network device can determine the first offset and configure the MBSFN subframe according to the position of one or more subframes occupied by the first information. The first offset can be used to determine the second position, which is the position of the one or more subframes after the offset of the first offset, and the second position is located within the position that supports the configuration of the MBSFN subframe, that is, the position of the configured MBSFN subframe includes the second position. This means that the position of the one or more subframes occupied by the first information can fall within the position of the MBSFN subframe after the offset of the first offset, that is, the second network device can send the first information on the MBSFN subframe according to the first offset. Since the CRS in the MBSFN subframe is only located on the time-frequency resources corresponding to the PDCCH, and there is no CRS on the time-frequency resources corresponding to the PDSCH, sending the first information on the MBSFN subframe can avoid the time-frequency resource conflict between the first information and the CRS, and realize spectrum sharing between LTE and NR.

[0010] In one possible design, the first network device configures the MBSFN subframe, including: the first network device may configure the MBSFN subframe according to the first position and the first offset.

[0011] With this design, the first network device can configure the MBSFN subframe based on the position of one or more subframes occupied by the first information and the first offset, to ensure that the position of the one or more subframes occupied by the first information, after being offset by the first offset, falls within the position range of the configured MBSFN subframe. This allows the second network device to send the first information on the MBSFN subframe, avoiding time-frequency resource conflicts between the first information and the CRS, and enabling spectrum sharing between LTE and NR. For example, the first network device can first determine the position of the first position after being offset by the first offset, i.e., the second position, based on the first position and the first offset, and then configure the MBSFN subframe based on the second position to ensure that the position of the MBSFN subframe includes the second position.

[0012] In one possible design, the first network device determines the first offset, including: the first network device may determine the first offset based on the first position and the first range.

[0013] Through this design, since not all subframes in a frame can be configured as MBSFN subframes, the first network device can determine the first offset based on the first position and the first range. The first range is the position that supports the configuration of MBSFN subframes. In this way, it can be ensured that the position of one or subframes occupied by the first information after being offset by the first offset can all be configured as MBSFN subframes.

[0014] In one possible design, the first offset is an integer greater than 0 and less than 10. With this design, a frame includes 10 subframes, and the first offset may be an integer greater than 0 and less than 10.

[0015] In one possible design, the first information includes a synchronization signal and at least one of a physical broadcast channel block, a system information block, other system information, or a paging message. With this design, the first information may be an NR signal that may still have time-frequency resource conflicts with the CRS when using MBSFN subframes, for example, one or more of an SSB, a system information block, other system information, or a paging message.

[0016] In a second aspect, embodiments of the present application provide a communication method, which can be performed by a second network device, or by a component of the second network device (such as a processor, chip, or chip system). In this method, the second network device can send a first position to the first network device, where the first position is the position of one or more subframes occupied by the first information; receive a first offset and first multicast / multicast single frequency network (MBSFN) configuration information from the first network device, where the first MBSFN configuration information is used to determine the configuration status of the MBSFN subframe within a first range, where the first range is the position that supports the configuration of MBSFN subframes; and send the first information to the first terminal device on the time domain resource corresponding to the second position, where the second position is the position after the first position is offset by the first offset, and the position of the MBSFN subframe includes the second position.

[0017] Optionally, the first network device and the second network device may provide network services of different standards for the terminal device. For example, the first network device may be a module or device for implementing an LTE network service function, and the second network device may be a module or device for implementing an NR network service function.

[0018] Through this method, the second network device can send the position of one or more subframes occupied by the first information to the first network device, so that the first network device can determine the first offset and configure the MBSFN subframe based on the position of the one or more subframes occupied by the first information. The second network device can receive the first offset and the first MBSFN subframe from the first network device. In this way, the second network device can determine the position of one or more subframes occupied by the first information after the first offset, that is, the second position, based on the first offset, and then send the first information to the first terminal device on the time domain resources corresponding to the second position. Since the position of the MBSFN subframe includes the second position, the second network device sends the first information to the first terminal device on the MBSFN subframe. However, the CRS in the MBSFN subframe is only located on the time-frequency resources corresponding to the PDCCH, and there is no CRS on the time-frequency resources corresponding to the PDSCH. Therefore, sending the first information on the MBSFN subframe can avoid time-frequency resource conflicts between the first information and the CRS, thereby realizing spectrum sharing between LTE and NR.

[0019] In one possible design, one or more subframes corresponding to the second position include a first subframe, the first subframe is located outside the second range, and the second range is the range after the first range is offset by the first offset. The method may also include: sending a first indication information to the first terminal device, the first indication information is used to indicate rate matching on the time domain resources corresponding to the first subframe.

[0020] With this design, the second range is the range after the first range is offset by the first offset, that is, the second range is the position that can be configured as an MBSFN subframe supported by the second network device side. Although one or more subframes occupied by the first information fall within the position range of the MBSFN subframe after being offset by the first offset, the second network device sends the first information on the MBSFN subframe. However, for the second network device side, the one or more subframes corresponding to the second position may be outside the second range, such as the first subframe. This means that the second network device cannot notify the first terminal device of the configuration status of the first subframe as an MBSFN subframe. Therefore, the second network device can send a first indication message to the first terminal device to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the first subframe to successfully obtain the first information and / or data.

[0021] In one possible design, the method may further include: sending second MBSFN configuration information to the first terminal device, the second MBSFN configuration information being used to determine the configuration status of the MBSFN subframe within a second range, the second range being the range after the first range is offset by the first offset.

[0022] With this design, the first network device can send the second MBSFN configuration information to the first terminal device. In this way, the first terminal device can obtain downlink data on the time domain resources corresponding to the MBSFN subframes without performing rate matching. For example, the first MBSFN configuration information is for subframes #1, #2, and #3, recorded as 111,000, the first offset is 1, the first range is for subframes #1, #2, #3, #6, #7, and #8, and the second range is for subframes #2, #3, #4, #7, #8, and #9. Obviously, subframes #2 and #3 are valid in the second range of MBSFN subframes. Therefore, the second MBSFN configuration information is for subframes #2 and #3, recorded as 110,000.

[0023] In one possible design, the MBSFN subframe includes a second subframe, which is offset by a first offset and located outside the first range, and the second MBSFN configuration information includes second indication information, which is used to indicate rate matching on the time domain resources corresponding to the second subframe.

[0024] With this design, for the second network device, the MBSFN subframe configured by the first network device may fall outside the first range after being offset by the first offset, such as the second subframe. In this case, although the second subframe is located at a position that can be configured as an MBSFN subframe on the second network device, it is not located at a position that can be configured as an MBSFN subframe on the first network device. Therefore, the second network device can set the configuration status of the MBSFN subframe corresponding to the second subframe to 0, thereby instructing the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe.

[0025] In one possible design, the MBSFN subframe includes a second subframe, which is offset by a first offset and located outside the first range. The method may also include: sending second indication information to the first terminal device, and the second indication information is used to indicate rate matching on the time domain resources corresponding to the second subframe.

[0026] Through this design, the second network device can instruct the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe through MBSFN configuration information to successfully obtain the first information and / or downlink data, and can also send first indication information to the first terminal device, which can be used to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe to successfully obtain the first information and / or data.

[0027] In one possible design, the first offset is an integer greater than 0 and less than 10. With this design, a frame includes 10 subframes, and the first offset may be an integer greater than 0 and less than 10.

[0028] In one possible design, the first information includes at least one of a synchronization signal and physical broadcast channel block, a system information block, other system information, or a paging message. With this design, the first information can be one or more of an NR signal that can still have time-frequency resource collision with CRS in case of using MBSFN subframes, e.g., SSB, system information block, other system information, or paging message.

[0029] In a third aspect, embodiments of the present disclosure provide a communication apparatus. The communication apparatus can be a first network device, or a component (e.g., a processor, a chip, or a chip system) of the first network device. The communication apparatus can include units configured to perform the steps of the first aspect. For example, the communication apparatus can include a communication unit and a processing unit.

[0030] The communication unit can be configured to receive, from a second network device, a first location, the first location being a location of one or more subframes occupied by the first information.

[0031] The processing unit can be configured to determine a first offset, the first offset being used to determine a second location, the second location being a location of the first location offset by the first offset, and the second location being within a first range, the first range being a location of a subframe supporting a multicast / broadcast single frequency network (MBSFN) configuration; and configure the MBSFN subframe, a location of the MBSFN subframe including the second location.

[0032] The communication unit can be further configured to send, to the second network device, the first offset and first MBSFN configuration information, the first MBSFN configuration information being used to determine a configuration status of the MBSFN subframe within the first range.

[0033] In one possible design, the processing unit can be configured to configure the MBSFN subframe based on the first location and the first offset.

[0034] In one possible design, the processing unit can be configured to determine the first offset based on the first location and the first range.

[0035] In one possible design, the first offset is an integer greater than 0 and less than 10.

[0036] In one possible design, the first information includes at least one of a synchronization signal and physical broadcast channel block, a system information block, other system information, or a paging message.

[0037] In a fourth aspect, embodiments of the present disclosure provide a communication apparatus. The communication apparatus can be a second network device, or a component (e.g., a processor, a chip, or a chip system) of the second network device. The communication apparatus can include units configured to perform the steps of the second aspect. For example, the communication apparatus can include a communication unit.

[0038] The communication unit can be configured to send, to the first network device, a first location, the first location being a location of one or more subframes occupied by the first information; receive, from the first network device, a first offset and first multicast / broadcast single frequency network (MBSFN) configuration information, wherein the first MBSFN configuration information is used to determine a configuration status of MBSFN subframes within a first range, the first range being a range of locations of which MBSFN subframes are supported to be configured; and send, to the first terminal device, the first information on time domain resources corresponding to a second location, wherein the second location is a location after the first location is offset by the first offset, and the locations of the MBSFN subframes include the second location.

[0039] In a possible design, the one or more subframes corresponding to the second location include a first subframe, and the first subframe is outside a second range, the second range being a range after the first range is offset by the first offset. The communication unit can be further configured to send, to the first terminal device, first indication information, the first indication information being used to indicate that rate matching is performed on time domain resources corresponding to the first subframe.

[0040] In a possible design, the communication unit can be further configured to send, to the first terminal device, second MBSFN configuration information, the second MBSFN configuration information being used to determine a configuration status of MBSFN subframes within a second range, the second range being a range after the first range is offset by the first offset.

[0041] In a possible design, the MBSFN subframes include a second subframe, and the second subframe is outside the first range after being offset by the first offset. The second MBSFN configuration information includes second indication information, and the second indication information is used to indicate that rate matching is performed on time domain resources corresponding to the second subframe.

[0042] In a possible design, the MBSFN subframes include a second subframe, and the second subframe is outside the first range after being offset by the first offset. The communication unit can be further configured to send, to the first terminal device, second indication information, the second indication information being used to indicate that rate matching is performed on time domain resources corresponding to the second subframe.

[0043] In a possible design, the first offset is an integer greater than 0 and less than 10.

[0044] In a possible design, the first information includes at least one of a synchronization signal and physical broadcast channel block, a system information block, other system information, or a paging message.

[0045] In a fifth aspect, embodiments of the present application provide a communications device, comprising a processor configured to implement the method performed by the first network device in the first aspect. The communications device may further comprise a memory configured to store program instructions and data. The memory is coupled to the processor, and the processor may invoke and execute program instructions stored in the memory to implement any one of the methods performed by the first network device in the first aspect.

[0046] Optionally, the communication device may further include a transceiver, wherein the transceiver is used for the communication device to communicate with other devices. Exemplarily, the other device is a second network device.

[0047] In a sixth aspect, embodiments of the present application provide a communications device, comprising a processor configured to implement the method performed by the second network device in the second aspect. The communications device may further comprise a memory configured to store program instructions and data. The memory is coupled to the processor, and the processor may invoke and execute program instructions stored in the memory to implement any one of the methods performed by the second network device in the second aspect.

[0048] Optionally, the communication device may further include a transceiver, wherein the transceiver is used for the communication device to communicate with other devices. Exemplarily, the other devices are the first network device or the second terminal device.

[0049] In a seventh aspect, an embodiment of the present application provides a communication system, comprising a first network device capable of implementing the method provided in the first aspect, and a second network device capable of implementing the method provided in the second aspect.

[0050] In an eighth aspect, an embodiment of the present application further provides a computer program, which, when executed on a computer, enables the computer to execute the method provided in any of the above aspects.

[0051] In a ninth aspect, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a computer, the computer executes the method provided in any one of the above aspects.

[0052] In the tenth aspect, an embodiment of the present application further provides a chip, which is used to read a computer program stored in a memory and execute the method provided in any of the above aspects.

[0053] In the eleventh aspect, an embodiment of the present application further provides a chip system, which includes a processor for supporting a computer device to implement the method provided in any of the above aspects.

[0054] In one possible design, the chip system further includes a memory for storing programs and data necessary for the computer device. The chip system can be composed of a chip or include a chip and other discrete devices.

[0055] It should be noted that the technical effects of the third to eleventh aspects mentioned above can refer to the technical effects of the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A schematic diagram of the structure of a communication system applicable to an embodiment of the present application;

[0057] Figure 2 A schematic diagram of the cell bandwidth in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of a CRS pattern in an embodiment of the present application;

[0059] Figure 4 A schematic diagram of NR signal avoiding CRS in an embodiment of the present application;

[0060] Figure 5 This is a schematic diagram of a time-frequency resource conflict between SSB and CRS in an embodiment of the present application;

[0061] Figure 6 This is another schematic diagram of a case where there is a time-frequency resource conflict between SSB and CRS in an embodiment of the present application;

[0062] Figure 7 This is a schematic diagram of an MBSFN subframe in an embodiment of the present application;

[0063] Figure 8 A flow chart of a communication method provided in an embodiment of the present application;

[0064] Figure 9 A schematic diagram of a first range provided in an embodiment of the present application;

[0065] Figure 10 A schematic diagram of LTE subframes and NR subframes provided in an embodiment of the present application;

[0066] Figure 11 A schematic diagram of MBSFN subframes and SSB occupied subframes provided in an embodiment of the present application;

[0067] Figure 12 A schematic diagram of first MBSFN configuration information and second MBSFN configuration information provided in an embodiment of the present application;

[0068] Figure 13A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0069] Figure 14 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0070] Figure 15 Another structural diagram of a communication device provided in an embodiment of the present application;

[0071] Figure 16 Another structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0072] This application provides a communication method and apparatus for avoiding time-frequency resource conflicts between NR SSB and LTE CRS in spectrum sharing. The method and apparatus are based on the same technical concept. Since the method and apparatus solve similar problems, the implementation of the apparatus and method can refer to each other, and any repetitions will not be repeated.

[0073] To facilitate understanding of the embodiments of the present application, a communication system to which the embodiments of the present application are applicable is introduced below.

[0074] Figure 1 FIG. 1 shows a schematic diagram of a communication system applicable to an embodiment of the present application. Figure 1 As shown, the communication system 100 may include a network device 200 and a terminal device. The network device 200 may include multiple communication modules, Figure 1 Take communication module 1 and communication module 2 as an example. The communication system 100 may include one or more terminal devices. Figure 1 Take terminal device 1 and terminal device 2 as an example. Among them, network device 200 can establish RRC connections with terminal device 1 and terminal device 2 respectively to provide network services for terminal device 1 and terminal device 2. For example, communication module 1 in network device 200 can communicate with terminal device 1, and communication module 2 in network device 200 can communicate with terminal device 2.

[0075] Exemplarily, the network device 200 can provide network services of different standards for terminal device 1 and terminal device 2. For example, the communication module 1 can provide LTE network services for terminal device 1, and the two can communicate through the Uu interface. For example, the communication module 2 can provide NR network services for terminal device 2, and the two can communicate through the Uu interface. Furthermore, communication modules 1 and 2 can also communicate with each other.

[0076] The network device may be an access network device, such as a radio access network (RAN) device, which is a device that provides wireless communication functions for terminal devices. Access network devices include, but are not limited to, the fifth generation (5G) th The access network device may also be a radio controller, a central unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or a network device may be a relay station, an on-vehicle device, or a network device in a future evolved network.

[0077] The terminal device can be simply referred to as a terminal, such as user equipment (UE), which is a device with wireless transceiver capabilities. The terminal device can be deployed on land (such as on-board vehicles, vehicles, high-speed trains or motor vehicles, etc.); it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, drones, balloons and satellites, etc.). The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned driving, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home. The terminal device can also be a relay terminal device, such as a mobile phone, a router, or an access device similar to a router deployed by an operator. The embodiments of the present application are not limited to this.

[0078] It should be noted that the communication method provided in the embodiment of the present application can be used in the scenario of spectrum sharing between LTE and NR. Of course, it can also be applied to other scenarios, and the embodiment of the present application does not limit this. For example, the NR cell bandwidth can be the same as the LTE cell bandwidth, such as Figure 2 For example, the NR cell bandwidth can be less than or equal to 20M.

[0079] It should be noted that Figure 1 The communication system shown is an example and does not limit the communication system to which the method provided in the embodiments of the present application is applicable. For example, the communication module 1 for implementing the LTE network function and the communication module 2 for implementing the NR network function can be components of the network device 200 (such as a processor, a chip or a chip system, etc.), that is, the network device 200 can implement both the LTE network function and the NR network function. For another example, the communication module 1 for implementing the LTE network function and the communication module 2 for implementing the NR network function can be two independent network devices, and the two network devices can be in a co-location relationship. In this case, Figure 1 The bold lines in the figure can be removed. For example, communication module 1 is an LTE base station, and communication module 2 is an NR base station.

[0080] For ease of description, the following description uses communication module 1 as a communication module (or network device) for implementing LTE network services, and communication module 2 as a communication module (or network device) for implementing NR network services. Accordingly, terminal device 1 can be an LTE UE, and terminal device 2 can be an NR UE.

[0081] The following is an introduction to some technical features involved in the embodiments of this application.

[0082] Spectrum sharing is a technology that effectively improves spectrum utilization. For example, existing LTE spectrum can be shared with NR signals, or new NR spectrum can be shared with LTE signals. In existing LTE spectrum, LTE CRS is transmitted at full bandwidth. Directly sharing LTE spectrum with NR signals can lead to time-frequency resource conflicts between LTE CRS and NR signals.

[0083] Currently, after the NR UE accesses the network, the LTE base station can send the LTE CRS pattern to the NR base station. Taking 2CRS as an example, the LTE base station sends CRS on the time-frequency resources corresponding to symbols 0, 4, 7, and 11 in a subframe, such as Figure 3 After receiving the LTE CRS pattern, the NR base station can avoid the time-frequency position of the LTE CRS and send data and the LTE CRS pattern to the NR UE according to the LTE CRS pattern, that is, the NR base station uses the time-frequency resources other than the time-frequency resources occupied by the CRS to send data to the NR UE, as shown in FIG. Figure 4 In this way, the NR UE can follow the LTE CRS pattern and not parse the data at the time-frequency position where the LTE CRS is located, but parse the data at time-frequency positions other than the time-frequency position of the LTE CRS, thereby achieving spectrum sharing between LTE and NR.

[0084] If an NR UE in an idle state wants to access a network and enter a connected state, the NR UE can search for an SSB broadcast by an NR base station, synchronize with the NR base station according to the SSB, and complete RRC connection with the NR base station, so that the NR UE accesses the network. After the introduction of the spectrum sharing concept, the NR base station can use the spectrum resources of LTE to transmit SSBs to improve the utilization of spectrum resources.

[0085] One SSB corresponds to one beam direction, and the NR base station can deploy a single beam, a double beam, or a four-beam, etc. Correspondingly, the number of SSBs can be 1, 2, or 4, etc. The transmission period of the SSB can be 5 ms, 10 ms, or 20 ms, etc. Before the NR accesses the network, the transmission period of the SSB is usually 20 ms. The protocol defines that subframes #0, #1, #5, or #6 can be configured to SSBs, and one SSB occupies 4 orthogonal frequency division multiplexing (OFDM) symbols (which can be referred to as symbols). For example, in the case where the number of SSBs is 4 and the transmission period of the SSB is 20 ms, subframes #0 and #1 can be configured to SSBs, and 2 SSBs are transmitted in each subframe. For another example, in the case where the number of SSBs is 4 and the transmission period of the SSB is 5 ms, subframes #0, #1, #5, and #6 can be configured to SSBs.

[0086] Taking a 2-port (i.e., 2 CRS) in time division duplex (TDD) as an example, in subframe #0, the CRS occupies the time-frequency resources corresponding to symbols 0, 4, 7, and 11; in subframe #1, the CRS occupies the time-frequency resources corresponding to symbols 0, 4, and 7; in addition, the time-frequency resources corresponding to symbols 10-13 are used for uplink and downlink slot switching, as shown in Figure 5

[0087] In case A, the subcarrier spacing (CSC) is 15 kHz, and the number of SSBs is 4, i.e., L = 4. The first and second SSBs occupy symbols 2-5 and symbols 8-11 of subframe #0, respectively, and the third and fourth SSBs occupy symbols 2-5 and symbols 8-11 of subframe #1, respectively. Among them, the first SSB conflicts with the CRS on symbol 4 of subframe #0, the second SSB conflicts with the CRS on symbol 11 of subframe #0, the third SSB conflicts with the CRS on symbol 4 of subframe #1, and the fourth SSB conflicts with the uplink and downlink slot switching.

[0088] ​In case B, the CSC is 30 kHz, and the number of SSBs is 8, i.e., L = 8. The first and second SSBs occupy symbols 4-7 and 8-11 of the first half of subframe #0, the third and fourth SSBs occupy symbols 2-5 and 8-11 of the second half of subframe #0, respectively, the fifth and sixth SSBs occupy symbols 4-7 and 8-11 of the first half of subframe #1, respectively, and the seventh and eighth SSBs occupy symbols 2-5 and 8-11 of the second half of subframe #1, respectively. Among them, the second SSB conflicts with the CRS on symbol 4 of subframe #0, the fourth SSB conflicts with the CRS on symbol 4 of subframe #0, the sixth SSB conflicts with the CRS on symbol 4 of subframe #1, and the eighth SSB conflicts with the uplink-downlink time slot transition.

[0089] In case C, the CSC is 30 kHz, and the number of SSBs is 8, i.e., L = 8. The first and second SSBs occupy symbols 2-5 and 8-11 of the first half of subframe #0, the third and fourth SSBs occupy symbols 2-5 and 8-11 of the second half of subframe #0, respectively, the fifth and sixth SSBs occupy symbols 2-5 and 8-11 of the first half of subframe #1, respectively, and the seventh and eighth SSBs occupy symbols 2-5 and 8-11 of the second half of subframe #1, respectively. Among them, the second SSB conflicts with the CRS on symbol 4 of subframe #0, the fourth SSB conflicts with the CRS on symbol 4 of subframe #0, the sixth SSB conflicts with the CRS on symbol 4 of subframe #1, and the eighth SSB conflicts with the uplink-downlink time slot transition.

[0090] Under the 2-port of TDD, whether it is 4-beam (4 SSBs) or 8-beam (SSB), there is a time-frequency resource conflict between LTE CRS and SSB, so the NR base station cannot deploy 4-beam and 8-beam.

[0091] Taking the 4-port (i.e., 4 CRSs) under TDD as an example, in subframe #5, the CRS occupies the time-frequency resources corresponding to symbols 0, 1, 4, 7, 8, and 11; in subframe #6, the CRS occupies the time-frequency resources corresponding to symbols 0, 1, 4, 7, and 8; in addition, the time-frequency resources corresponding to symbols 10-13 are used for uplink-downlink time slot transition, as shown in Figure 6

[0092] ​In case A, the CSC is 15 kHz and the number of SSBs is 4, i.e., L = 4. The first and second SSBs occupy symbols 2-5 and 8-11 of subframe #5, respectively. The third and fourth SSBs occupy symbols 2-5 and 8-11 of subframe #6, respectively. The first SSB collides with the CRS on symbol 4 of subframe #5, the second SSB collides with the CRS on symbols 8 and 11 of subframe #5, the third SSB collides with the CRS on symbol 4 of subframe #6, and the fourth SSB collides with the CRS on symbol 8 of subframe #6 as well as the uplink and downlink time slot transition.

[0093] In case B, the CSC is 30 kHz and the number of SSBs is 8, i.e., L = 8. The first and second SSBs occupy symbols 4-7 and 8-11 of the first half of subframe #5. The third and fourth SSBs occupy symbols 2-5 and 6-9 of the second half of subframe #5, respectively. The fifth and sixth SSBs occupy symbols 4-7 and 8-11 of the first half of subframe #6, respectively. And the seventh and eighth SSBs occupy symbols 2-5 and 6-9 of the second half of subframe #6, respectively. The second SSB collides with the CRS on symbol 4 of subframe #5, the third SSB collides with the CRS on symbol 8 of subframe #5, the fourth SSB collides with the CRS on symbols 4 and 11 of subframe #5, the sixth SSB collides with the CRS on symbol 4 of subframe #6, and the seventh SSB collides with the CRS on symbol 8 of subframe #6, as well as the uplink and downlink time slot transition.

[0094] In case C, the CSC is 30 kHz and L is 8. The first and second SSBs occupy symbols 2 to 5 and symbols 8 to 11 of the first half of subframe #5. The third and fourth SSBs occupy symbols 2 to 5 and symbols 8 to 11 of the second half of subframe #5, respectively. The fifth and sixth SSBs occupy symbols 2 to 5 and symbols 8 to 11 of the first half of subframe #6, respectively. The seventh and eighth SSBs occupy symbols 2 to 5 and symbols 8 to 11 of the second half of subframe #6, respectively. Among them, the first SSB conflicts with the CRS on symbol 1 of subframe #5, the second SSB conflicts with the CRS on symbol 4 of subframe #5, the third SSB conflicts with the CRS on symbol 8 of subframe #5, the fourth SSB conflicts with the CRS on symbol 11 of subframe #5, the fifth SSB conflicts with the CRS on symbol 1 of subframe #6, the sixth SSB conflicts with the CRS on symbol 4 of subframe #6, the seventh SSB conflicts with the CRS on symbol 8 of subframe #6, the fourth SSB conflicts with the CRS on symbol 11 of subframe #5, and the eighth SSB conflicts with the uplink and downlink time slot conversion.

[0095] Under TDD's 4-port configuration, whether it is 4 beams (4 SSBs) or 8 beams (SSBs), there is a conflict in time-frequency resources between LTE CRS and SSBs. Therefore, NR base stations cannot deploy 4 beams and 8 beams.

[0096] Considering that the LTE CRS in the MBSFN subframe exists in the symbol corresponding to the physical downlink control channel (PDCCH), and there is no LTE CRS in the time-frequency resources corresponding to the physical downlink shared channel (PDSCH), the subframe occupied by SSB can be configured as an MBSFN subframe to avoid CRS. For example, LTE CRS only occupies symbol 1, such as Figure 7 shown.

[0097] The protocol defines that the subframes that can be configured for MBSFN in LTE are numbered #1, #2, #3, #6, #7, and #8, and the subframes occupied by SSB are #0 and #1 (or #0, #1, #5, and #6). The LTE base station can inform the NR base station of the location of the MBSFN subframes so that the NR base station sends SSB on the MBSFN subframes. This means that the subframe numbers on the LTE base station side are aligned with the subframe numbers on the NR base station side. In this way, one or more subframes occupied by SSB cannot all be MBSFN subframes (such as subframe #0), resulting in time-frequency resource conflicts between the NR SSB and the LTE CRS.

[0098] In view of this, embodiments of the present application provide a communication method, apparatus, and system for avoiding time-frequency resource conflicts between NRSSB and LTE CRS in spectrum sharing. It is understood that NRSSB can be abbreviated as SSB, and LTE CRS can be abbreviated as CRS.

[0099] It should be noted that, in the following embodiments of the present application, "multiple" refers to two or more. In view of this, "multiple" can also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and does not limit which ones are included. For example, including at least one of A, B and C, then the included ones may be A, B, C, A and B, A and C, B and C, or A, B and C. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0100] Unless otherwise specified, ordinal numbers such as "first" and "second" in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, timing, priority or importance of multiple objects.

[0101] Figure 8 A flow chart of a communication method provided by an embodiment of the present application is shown, which can be applied to Figure 1 In the communication system 100, for example, the first network device may be Figure 1 The communication module 1 shown, the second network device can be Figure 1 The communication module 2 shown, the second terminal device can be Figure 1 The terminal device 1 shown, the first terminal device can be Figure 1 The terminal device 2 shown, that is, the first network device can provide LTE network services for the second terminal device, and the second network device can provide NR network services for the first terminal device. Figure 8 As shown, the flow chart of the method can be shown as follows.

[0102] S801: A second network device sends a first location to a first network device. Correspondingly, the first network device receives the first location.

[0103] Exemplarily, the second network device may send a first position to the first network device, where the first position may be used to configure an MBSFN subframe. The first position may be a position of one or more subframes occupied by the first information. For example, the first position may be a subframe number.

[0104] Exemplarily, the first information may refer to an NR signal that has a time-frequency resource conflict with an LTE CRS. In an embodiment of the present application, the first information may refer to an NR signal that may still have a time-frequency resource conflict with an LTE CRS when using an MBSFN subframe. For example, the first information may be one or more of the following information.

[0105] (1) SSB, which can be used to synchronize the NR UE with the NR base station. For example, the SSB can occupy at least one of subframes #0, #1, #5, or #6. For example, when the SSB occupies subframe #0, there is a time-frequency resource conflict between the SSB and the CRS. For example, when the SSB occupies subframe 5, there is a time-frequency resource conflict between the SSB and the CRS. For another example, when the SSB occupies subframes #0 and 5, there is a time-frequency resource conflict between the SSB and the CRS.

[0106] (2) System Information Block (SIB) can provide the NR UE with several parameters required for cell camping, retransmission, or link establishment. For example, the SIB can occupy at least one of subframes #2, #3, #4, or #5. For example, when the SIB occupies subframe 5, there is a time-frequency resource conflict between the SSB and the CRS.

[0107] (3) Other system information (OSI) can be used to broadcast other cell information. For example, the OSI can occupy subframe #5 and / or subframe #7. For example, when the OSI occupies subframe 5, there is a time-frequency subframe conflict between the OSI and the CRS.

[0108] (4) Paging message: This message can be used to send a call request to an NR UE in the idle state. For example, the paging message can occupy at least one of subframes #2, #3, or #5. For example, when the paging message occupies subframe #5, there is a time-frequency resource conflict between the paging message and the CRS.

[0109] It can be understood that the position of the subframe occupied by the above-mentioned first information is only an example and is not limited to this in the embodiments of the present application.

[0110] To facilitate understanding of the technical solution of the present application, the following description will be given using the example of the first information being SSB. It is understandable that the technical solution adapted to SSB can also be adapted to other NR signals (such as SIB, OSI, or paging messages, etc.) that have time-frequency resource conflicts with CRS.

[0111] Exemplarily, the second network device may configure subframes for the SSB, and send the first position to the first network device through RRC signaling. For example, the second network device may determine the number of SSBs based on the number of deployed beams, and then configure subframes for the SSBs based on the number of SSBs and the transmission period of the SSBs. For example, the number of SSBs is 1, and the transmission period of the SSBs is 20ms. The second network device may configure subframe #1 to the SSB, and the first position is subframe #1. For example, the number of SSBs is 4, and the transmission period of the SSBs is 20ms. The second network device may configure subframe #0 and subframe #1 to the SSB, and the first position is subframe #0 and subframe #1. For another example, the number of SSBs is 4, and the transmission period of the SSBs is 5ms. The second network device may configure subframes #0, #1, #5, and #6 to the SSB, and the first position is subframe #0, #1, #5, and #6.

[0112] Optionally, the second network device may send the number of SSBs to the first network device. Correspondingly, the first network device receives the number of SSBs. For example, the second network device may send the number of SSBs to the first network device via RRC signaling.

[0113] S802: The first network device determines a first offset.

[0114] Exemplarily, the first network device may determine a first offset, which may be used to cause one or more subframes occupied by the SSB to fall within the position range of the MBSFN subframe after being offset by the first offset. Optionally, the first offset may be an integer greater than or equal to 1 and less than or equal to 9.

[0115] As an example, the first network device may determine the first offset based on the first position and the first range. The first range may be a position supporting the configuration of MBSFN subframes, that is, a subframe number that can be configured as MBSFN as defined by the protocol. For example, the first range may be subframes #1, #2, #3, #6, #7, and #8, such as Figure 9 As shown. For example, the subframes occupied by SSB are subframes #0 and #1, and the first network device can determine the first offset to be any one of 1, 2, 6, or 7. For another example, the subframes occupied by SSB are subframes #0, #1, #5, and #6, and the first network device can determine the first offset to be 2 or 3. Through this method, since not all subframes in a frame can be configured as MBSFN subframes, the first network device can determine the first offset based on the first position and the first range. The first range is the position that supports the configuration of MBSFN subframes. In this way, it can be ensured that the position of the one or subframes occupied by the first information after being offset by the first offset can all be configured as MBSFN subframes.

[0116] As another example, the first offset may be predefined by the system. For example, the system predefines the first offset to be 1. For another example, the first network device and the second network device may also pre-agree that the first offset is 1 or 2.

[0117] S803: The first network device configures an MBSFN subframe.

[0118] Exemplarily, the first network device may configure one or more MBSFN subframes. For example, the first network device may configure one or more MBSFN subframes within a first range, such as configuring subframe #1 and subframe #2 as MBSFN subframes. For example, the first network device may configure one or more MBSFN subframes within the first range according to a predefined configuration, such as when the first network device and the second network device pre-agreed on the number of MBSFN subframes to be configured and the position of the MBSFN subframes. For another example, the first network device may configure one or more MBSFN subframes according to a first position and a first offset.

[0119] As an example, a first network device may configure one or more MBSFN subframes within a first range based on a first position and a first offset. For example, the first network device may first determine a second position based on the first position and the first offset, and then configure one or more MBSFN subframes based on the second position. The second position may be a position offset from the first position by the first offset, i.e., a subframe number offset from the subframe number where the SSB is located by the first offset. Furthermore, the second position may be within the first range. Thus, the position of the MBSFN subframe may include the second position, thereby ensuring that the position of one or more subframes occupied by the SSB, after being offset by the first offset, falls within the configured MBSFN subframe position range. This allows the second network device to transmit the SSB in the MBSFN subframe, avoiding time-frequency resource conflicts between the SSB and the CRS, and enabling spectrum sharing between LTE and NR. For example, the first network device may first determine a position offset from the first position by the first offset, i.e., a second position, based on the first position and the first offset, and then configure the MBSFN subframe based on the second position to ensure that the position of the MBSFN subframe includes the second position.

[0120] For example, the first offset is 1, the first position is subframe #0 and subframe #1, and the first position offset by the first offset is subframe #1 and subframe #2, i.e., the second position can be subframe #1 and subframe #2. In this case, the first network device can configure subframe #1 and subframe #2 as MBSFN subframes according to the second position; or, can configure subframe #1, #2 and #3 as MBSFN subframes; or, can configure subframe #1, #2 and #6 as MBSFN subframes; or, can configure subframe #1, #2 and #7 as MBSFN subframes; or, can configure subframe #1, #2 and #8 as MBSFN subframes; or, can configure subframe #1, #2, #3 and #6 as MBSFN subframes; or, can configure subframe #1, #2, #3 and #7 as MBSFN subframes; or, can configure subframe #1, #2, #3 and #8 as MBSFN subframes; or, can configure #1, #2, #6 and #7 as MBSFN subframes; or, can configure #1, #2, #6 and #8 as MBSFN subframes; or, can configure #1, #2, #7 and #8 as MBSFN subframes; or, can configure subframe #1, #2, #3, #6, #7 and #8 as MBSFN subframes.

[0121] For example, the first offset is 2, the first position is subframe #0, #1, #5 and #6, and the first position offset by the first offset is subframe #2, #3, #7 and #8, i.e., the second position can be subframe #2, #3, #7 and #8. In this case, the first network device can configure subframe #2, #3, #7 and #8 as MBSFN subframes according to the second position; or, can configure subframe #1, #2, #3, #7 and #8 as MBSFN subframes; or, can configure subframe #2, #3, #6, #7 and #8 as MBSFN subframes; or, can configure subframe #1, #2, #3, #6, #7 and #8 as MBSFN subframes.

[0122] It should be noted that the execution order of the above steps S802 and S803 is only an example, and the embodiments of the present application are not limited thereto. For example, the first network device can first configure MBSFN subframes, and then determine the first offset. For example, the first network device can configure one or more subframes as MBSFN according to a predefinition, and then determine the first offset according to the position of the MBSFN subframes and the first position, i.e., first execute step S803 and then execute step S802.

[0123] For example, the first network device may configure subframes #1, #2, and #3 as MBSFN according to a predefined configuration, with the first positions being subframes #0 and #1. In this case, the first network device may determine the first offset to be 1 or 2 according to the position of the MBSFN subframe and the first position, to ensure that the first position, after being offset by the first offset, falls at the position of the MBSFN subframe. For another example, the first network device may configure subframes #1, #2, #3, #6, #7, and #8 as MBSFN according to the results of a prior negotiation with the second network device, with the first positions being subframes #0, #1, #5, and #6. In this case, the first network device may determine the first offset to be 1 or 2 according to the position of the MBSFN subframe and the first position, to ensure that the first position, after being offset by the first offset, falls at the position of the MBSFN subframe.

[0124] S804: The first network device sends the first offset and the first MBSFN configuration information to the second network device. Correspondingly, the second network device receives the first offset and the first MBSFN configuration information.

[0125] Exemplarily, the first network device may send the first offset and the first MBSFN configuration information to the second network device. For example, the first network device may send the first offset and the first MBSFN configuration information to the second network device via RRC signaling. The first MBSFN configuration information may be used to determine the configuration status of the MBSFN subframe within the first range, or may be used to indicate the position of the MBSFN subframe.

[0126] Exemplarily, the first network device may send the first MBSFN configuration information to the second network device in a 0 / 1 manner. 0 may indicate that the subframe is not configured with MBSFN, and 1 may indicate that the subframe is configured with MBSFN. For example, if the first network device configures subframe #1 and subframe #2 as MBSFN, the first MBSFN configuration information may be represented as 110 000. For example, if the first network device configures subframes #1, #2, and #8 as MBSFN, the first MBSFN configuration information may be represented as 110 001. For another example, if the first network device configures subframes #1, #2, #3, #6, #7, and #8 as MBSFN, the first MBSFN configuration information may be represented as 111 111. It is understandable that the first network device may also use other methods to indicate the position of the MBSFN subframe, and the embodiments of the present application are not limited thereto.

[0127] In a possible implementation, after the first network device configures the MBSFN subframe, the first network device may send first MBSFN configuration information to the second terminal device.

[0128] S805: The second network device sends the first information to the first terminal device on the time domain resource corresponding to the second position. Correspondingly, the first terminal device receives the first information.

[0129] Exemplarily, the second network device may send the first information to the first terminal device on the time domain resource corresponding to the second position. For example, the second network device may determine the second position based on the first offset and the first position, and then send the SSB to the first terminal device on the time domain resource corresponding to the second position.

[0130] It can be understood that the second network device sends the first information to the first terminal device on the time domain resources corresponding to the second position. It can be understood that the second network device delays the first offset to send the first information to the first terminal device, which means that the subframe number on the first network device side is not aligned with the subframe number on the second network device side. For example, taking the first offset as 1, at the same moment, subframe #0 on the first network device side corresponds to subframe #9 on the second network device side; subframe #1 on the first network device side corresponds to subframe #0 on the second network device side; subframe #2 on the first network device side corresponds to subframe #1 on the second network device side; subframe #3 on the first network device side corresponds to subframe #2 on the second network device side; subframe #4 on the first network device side corresponds to subframe #3 on the second network device side; subframe #5 on the first network device side corresponds to subframe #4 on the second network device side; subframe #6 on the first network device side corresponds to subframe #5 on the second network device side; subframe #7 on the first network device side corresponds to subframe #6 on the second network device side; subframe #8 on the first network device side corresponds to subframe #7 on the second network device side; subframe #9 on the first network device side corresponds to subframe #8 on the second network device side, as shown in FIG. Figure 10 shown.

[0131] For example, the MBFSN subframes are subframe #1 and subframe #2, the first offset is 1, and the first position is subframe #0 and subframe #1. The first position is offset by the first offset to become subframe #1 and subframe #2, that is, the second position is subframe #1 and subframe #2, that is, the subframe numbers corresponding to the first network device side are subframe #1 and subframe #2. The second network device can send SSB to the second terminal device on NR's subframe #1 and subframe #2. Since the second network device performs subframe offset according to the first offset before sending SSB, it is equivalent to the second network device delaying the first offset to send SSB. For example, the first offset is 1, which means a delay of 1ms. In this way, NR subframe #0 and subframe #1 can actually correspond to LTE's subframe 1 and subframe #2, and LTE's subframe 1 and subframe #2 are MBSFN subframes, that is, SSB is sent on the MBSFN subframe, thereby avoiding the time-frequency resource conflict between SSB and CRS, such as Figure 11 shown.

[0132] In one possible implementation, the one or more subframes corresponding to the second position include a first subframe, and the first subframe is located outside the second range, and the second range is the range after the first range is offset by the first offset. In this case, the second network device can send first indication information to the first terminal device. The first indication information can be used to instruct the second terminal device to perform rate matching on the time domain resources corresponding to the first subframe. Optionally, the first subframe can be subframe #0, or the first subframe can be subframe #5, or the first subframe can be subframe #0 and subframe #5.

[0133] Among them, the first range can be understood as the position range of the configurable MBSFN subframe supported by the first network device side, and the second range can be understood as the subframe range corresponding to the first network device side after the position range of the configurable MBSFN subframe supported by the second network device is offset by the first offset. The second network device sends the first information to the first terminal device based on the time domain resources corresponding to the second position. The second position falls into the position of the MBSFN subframe. However, one or more subframes corresponding to the first position after the offset may be outside the second range, such as the first subframe. This means that the second network device cannot notify the first terminal device of the configuration status that the first subframe is an MBSFN subframe. Therefore, the second network device can send a first indication message to the first terminal device to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the first subframe to successfully obtain the first information and / or downlink data.

[0134] by Figure 10 For example, the first range is subframes #1, #2, #3, #6, #7, and #8, and the MBSFN subframes are subframes #1, #2, and #3. The second range is the range after the first range is offset by the first offset, that is, the second range is subframes #2, #3, #4, #7, #8, and #9. The first position is subframe #0 and subframe #1, and the second position is subframe #1 and subframe #2. For the second network device, subframe #0 is subframe #1 to the first network device side, that is, the first network device sends SSB on the MBSFN subframe. However, for the first network device, subframe #0 is not within the range defined by the protocol that can be configured as an MBSFN subframe. Because the first network device can notify the first terminal device whether MBSFN is configured on subframes 1, #2, #3, #6, #7, and #8, the first network device cannot notify the first terminal device of the configuration status of subframe #0 as an MBSFN subframe. In this case, the second network device can send a first indication message to the first terminal device to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the first subframe to successfully obtain the first information and / or data, thereby realizing spectrum sharing between NR and LTE.

[0135] In one possible implementation, the second network device may send second MBSFN configuration information to the first terminal device. This second MBSFN configuration information may be used to determine the configuration status of an MBSFN subframe within the second range, or may be used to indicate a valid MBSFN subframe within the second range. With this design, the first network device may send the second MBSFN configuration information to the first terminal device, so that the first terminal device can obtain the first information and / or downlink data without performing rate matching on the time domain resources corresponding to the MBSFN subframe.

[0136] by Figure 10 For example, the first range is subframes #1, #2, #3, #6, #7 and #8, and the second range is subframes #2, #3, #4, #7, #8 and #9. The MBSFN subframes are subframes #1, #2 and #3, and the corresponding first MBSFN configuration information can be 111000. After the NR subframe is offset by the first offset, subframes #0, #1 and #2 in the NR subframe correspond to the MBSFN subframes in LTE. However, for the NR base station, the subframes that can be configured as MBSFN are still #1, #2, #3, #6, #7 and #8, that is, NR subframe #1 corresponds to LTE subframe #2, NR subframe #2 corresponds to LTE subframe #3, and NR subframe #3 corresponds to LTE subframe #4, and LTE subframe #4 does not support the configuration of MBSFN subframes, so the NR base station can set NR subframe #3 to 0, that is, the second MBSFN configuration information is 110 000, as shown Figure 12 shown.

[0137] As an example, the second MBSFN configuration information may include second indication information, which may be used to instruct the second terminal device to perform rate matching on the time domain resources corresponding to the second subframe. The second subframe may be an MBSFN subframe, and the second subframe is offset by the first offset and is located outside the first range. For the second network device side, the MBSFN subframe configured by the first network device may fall outside the first range after being offset by the first offset, such as the second subframe. In this case, although on the second network device side, the location of the second subframe can be configured as an MBSFN subframe, that is, the second network device can notify the second subframe whether to configure an MBSFN subframe. However, on the first network device side, the location of the second subframe cannot be configured as an MBSFN subframe, so the second network device can set the configuration status of the MBSFN subframe corresponding to the second subframe to 0 to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe. Figure 12 For example, the second subframe may be subframe #3 and subframe #8 in the NR subframe.

[0138] In another possible implementation, the second network device may send a second indication message to the first terminal device. For example, the second network device may send the second indication message to the first terminal device through RRC signaling. The second indication message may be used to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe. The second subframe may be an MBSFN subframe, and the second subframe is offset by the first offset and is located outside the first range. Through this design, the second network device may instruct the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe through MBSFN configuration information to successfully obtain the first information and / or downlink data, and may also send a second indication message to the first terminal device, and the second indication message may be used to instruct the first terminal device to perform rate matching on the time domain resources corresponding to the second subframe to successfully obtain the first information and / or data.

[0139] In the above embodiment of the present application, the first network device can determine the first offset and configure the MBSFN subframe according to the position of one or more subframes occupied by the first information. The first offset can be used to determine the second position, which is the position of the one or more subframes after the offset of the first offset, and the second position is located within the position that supports the configuration of the MBSFN subframe, that is, the position of the configured MBSFN subframe includes the second position. This means that the position of the one or more subframes occupied by the first information can fall within the position of the MBSFN subframe after the offset of the first offset, that is, the second network device can send the first information on the MBSFN subframe according to the first offset. Since the CRS in the MBSFN subframe is only located on the time-frequency resources corresponding to the PDCCH, and there is no CRS on the time-frequency resources corresponding to the PDSCH, sending the first information on the MBSFN subframe can avoid the time-frequency resource conflict between the first information and the CRS, thereby realizing spectrum sharing between LTE and NR.

[0140] In the embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspectives of the first network device, the second network device, and the interaction between the two. In order to implement the various functions in the methods provided in the embodiments of the present application, the first network device and the second network device may include hardware structures and / or software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. Whether a function of the above functions is executed in the form of hardware structures, software modules, or hardware structures plus software modules depends on the specific application and design constraints of the technical solution.

[0141] Figure 13 FIG1 shows a schematic diagram of the structure of a communication device 1300. The communication device 1300 may be the above-mentioned Figure 8The first network device in the illustrated embodiment can implement the functions of the first network device in the method provided in the embodiment of the present application; the communication device 1300 can also be a device that can support the first network device in implementing the functions of the first network device in the method provided in the embodiment of the present application. The communication device 1300 can be a hardware structure, a software module, or a hardware structure and a software module. The communication device 1300 can be implemented as a chip system. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete components.

[0142] The communication device 1300 may include a processing unit 1301 and a communication unit 1302 .

[0143] The communication unit 1302 may be configured to receive a first position from the second network device, where the first position is a position of one or more subframes occupied by the first information.

[0144] The processing unit 1301 can be used to determine a first offset, the first offset is used to determine a second position, the second position is the position after the first position is offset by the first offset, and the second position is located within a first range, the first range is a position that supports the configuration of a multicast / multicast single frequency network MBSFN subframe; and, configure the MBSFN subframe, the position of the MBSFN subframe includes the second position.

[0145] The communication unit 1302 may also be configured to send a first offset and first MBSFN configuration information to the second network device, where the first MBSFN configuration information is used to determine a configuration state of the MBSFN subframe within the first range.

[0146] In one possible design, processing unit 1301 may be configured to: configure an MBSFN subframe based on a first position and a first offset.

[0147] In one possible design, the processing unit 1301 may be configured to determine a first offset based on the first position and the first range.

[0148] In one possible design, the first offset is an integer greater than 0 and less than 10.

[0149] In one possible design, the first information includes a synchronization signal and at least one of a physical broadcast channel block, a system information block, other system information, or a paging message.

[0150] The communication unit 1302 is used for the communication device 1300 to communicate with other modules, and can be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.

[0151] Among them, 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.

[0152] The division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0153] Figure 14 FIG1 shows a schematic diagram of the structure of a communication device 1400. The communication device 1400 can be Figure 8 The second network device in the illustrated embodiment can implement the functions of the second network device in the method provided in the embodiment of the present application; the communication device 1400 can also be a device that can support the second network device in implementing the functions of the second network device in the method provided in the embodiment of the present application. The communication device 1400 can be a hardware structure, a software module, or a hardware structure and a software module. The communication device 1400 can be implemented as a chip system. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete components.

[0154] The communication device 1400 may include a processing unit 1401 and a communication unit 1402 .

[0155] In which, the communication unit 1402 can be used to send a first position to the first network device, where the first position is the position of one or more subframes occupied by the first information; receive a first offset and first multicast / multicast single frequency network MBSFN configuration information from the first network device, where the first MBSFN configuration information is used to determine the configuration status of the MBSFN subframe within a first range, and the first range is the position that supports the configuration of the MBSFN subframe; and, used to send the first information to the first terminal device on the time domain resource corresponding to the second position, where the second position is the position after the first position is offset by the first offset, and the position of the MBSFN subframe includes the second position.

[0156] In one possible design, one or more subframes corresponding to the second position include a first subframe, the first subframe is located outside the second range, and the second range is the range after the first range is offset by the first offset. The communication unit 1402 is further used to: send a first indication information to the first terminal device, and the first indication information is used to indicate rate matching on the time domain resources corresponding to the first subframe.

[0157] In one possible design, the communication unit 1402 is further used to: send second MBSFN configuration information to the first terminal device, the second MBSFN configuration information is used to determine the configuration status of the MBSFN subframe within a second range, and the second range is the range after the first range is offset by the first offset.

[0158] In one possible design, the MBSFN subframe includes a second subframe, which is offset by a first offset and located outside the first range, and the second MBSFN configuration information includes second indication information, which is used to indicate rate matching on the time domain resources corresponding to the second subframe.

[0159] In one possible design, the MBSFN subframe includes a second subframe, which is offset by a first offset and located outside the first range. The communication unit 1402 is further used to: send second indication information to the first terminal device, and the second indication information is used to indicate rate matching on the time domain resources corresponding to the second subframe.

[0160] In one possible design, the first offset is an integer greater than 0 and less than 10.

[0161] In one possible design, the first information includes a synchronization signal and at least one of a physical broadcast channel block, a system information block, other system information, or a paging message.

[0162] The communication unit 1402 is used for communication between the communication unit 1400 and other modules, and can be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can achieve communication.

[0163] Among them, 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.

[0164] The division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0165] like Figure 15 The communication device 1500 provided in an embodiment of the present application is shown, wherein the communication device 1500 may be Figure 8The first network device in the illustrated embodiment can implement the functions of the first network device in the method provided in the embodiment of the present application; the communication device 1500 can also be a device that can support the first network device in implementing the functions of the first network device in the method provided in the embodiment of the present application. The communication device 1500 can be a chip system. In the embodiment of the present application, the chip system can be composed of a chip or include a chip and other discrete components.

[0166] In hardware implementation, the communication unit 1302 may be a transceiver, which is integrated into the communication device 1500 to form a communication interface 1510 .

[0167] Communication apparatus 1500 includes at least one processor 1520 configured to implement or support communication apparatus 1500 in implementing the functionality of the first network device in the method provided in an embodiment of the present application. For example, processor 1520 may determine the first offset and configure the MBSFN subframe. For details, see the detailed description in the method example, which is not further described here.

[0168] The communication device 1500 may also include at least one memory 1530 for storing program instructions and / or data. The memory 1530 is coupled to the processor 1520. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be electrical, mechanical, or other forms, and is used for information exchange between the devices, units, or modules. The processor 1520 may operate in conjunction with the memory 1530. The processor 1520 may execute program instructions stored in the memory 1530. At least one of the at least one memory may be included in the processor.

[0169] Communication device 1500 may also include a communication interface 1510 for communicating with other devices via a transmission medium, thereby enabling the apparatus in communication device 1500 to communicate with the other device. For example, the other device may be a second network device or a second terminal device. Processor 1520 may utilize communication interface 1510 to transmit and receive data. Communication interface 1510 may specifically be a transceiver.

[0170] The specific connection medium between the communication interface 1510, the processor 1520 and the memory 1530 is not limited in the embodiment of the present application. Figure 15 The memory 1530, the processor 1520 and the communication interface 1510 are connected via a bus 1540. Figure 15 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 15Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0171] In the embodiments of the present application, the processor 1520 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0172] In an embodiment of the present application, the memory 1530 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or may be a volatile memory (volatile memory), such as a random-access memory (RAM). A memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0173] like Figure 16 The communication device 1600 provided in an embodiment of the present application is shown, wherein the communication device 1600 may be Figure 8 The second network device in the illustrated embodiment can implement the functions of the second network device in the method provided in the embodiment of the present application; the communication device 1600 can also be a device that can support the second network device in implementing the functions of the second network device in the method provided in the embodiment of the present application. The communication device 1600 can be a chip system. In the embodiment of the present application, the chip system can be composed of a chip or include a chip and other discrete components.

[0174] In hardware implementation, the communication unit 1402 may be a transceiver, which is integrated into the communication device 1600 to form the communication interface 1610 .

[0175] Communication device 1600 includes at least one processor 1620 configured to implement or support communication device 1600 in implementing the functionality of the second network device in the method provided in an embodiment of the present application. For example, processor 1620 may determine the second position based on the first offset. For details, see the detailed description in the method example, which is not further described here.

[0176] Communication device 1600 may also include at least one memory 1630 for storing program instructions and / or data. Memory 1630 is coupled to processor 1620. Coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. Processor 1620 may operate in conjunction with memory 1630. Processor 1620 may execute program instructions stored in memory 1630. At least one of the at least one memory may be included in the processor.

[0177] Communication device 1600 may also include a communication interface 1610 for communicating with other devices via a transmission medium, thereby enabling the device in device 1600 to communicate with the other device. For example, the other device may be a first network device or a first terminal device. Processor 1620 may utilize communication interface 1610 to transmit and receive data. Communication interface 1610 may specifically be a transceiver.

[0178] The specific connection medium between the communication interface 1610, the processor 1620 and the memory 1630 is not limited in the embodiment of the present application. Figure 16 The memory 1630, the processor 1620 and the communication interface 1610 are connected via a bus 1640. Figure 16 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 16 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0179] In the embodiments of the present application, the processor 1620 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0180] In an embodiment of the present application, the memory 1630 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or may be a volatile memory (volatile memory), such as a random-access memory (RAM). A memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0181] An embodiment of the present application also provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute the method executed by the first network device in the aforementioned embodiment.

[0182] An embodiment of the present application further provides a computer-readable storage medium comprising instructions, which, when executed on a computer, enables the computer to execute the method executed by the second network device in the aforementioned embodiment.

[0183] An embodiment of the present application also provides a computer program product, including instructions, which, when executed on a computer, enables the computer to execute the method executed by the first network device in the aforementioned embodiment.

[0184] An embodiment of the present application also provides a computer program product, including instructions, which, when executed on a computer, enables the computer to execute the method executed by the second network device in the aforementioned embodiment.

[0185] The embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the functions of the first network device in the aforementioned method. The chip system can be composed of a chip or include a chip and other discrete devices.

[0186] The embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the function of the second network device in the aforementioned method. The chip system can be composed of a chip or include a chip and other discrete devices.

[0187] An embodiment of the present application provides a communication system, which includes the aforementioned first network device and second network device.

[0188] The methods provided in the embodiments of the present application may be implemented in whole or in part through software, hardware, firmware, or any combination thereof. When implemented using software, they may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., an SSD), etc.

[0189] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A communication method, applied to a first network device, characterized in that: include: receiving a first position from a second network device, where the first position is a position of one or more subframes occupied by first information; Determining a first offset, where the first offset is used to determine a second position, where the second position is a position of the first position offset by the first offset, and the second position is within a first range, where the first range is a position supporting configuration of a multicast / multicast single frequency network subframe; configuring the multicast / groupcast single frequency network subframe according to the first position and the first offset, wherein the position of the multicast / groupcast single frequency network subframe includes the second position; The first offset and first multicast / multicast single frequency network configuration information are sent to the second network device, where the first multicast / multicast single frequency network configuration information is used to determine a configuration state of the multicast / multicast single frequency network subframe within the first range.

2. The method according to claim 1, characterized in that Determining the first offset includes: The first offset is determined according to the first position and the first range.

3. The method according to claim 1 or 2, characterized in that The first offset is an integer greater than 0 and less than 10.

4. The method according to claim 1 or 2, characterized in that The first information includes at least one of a synchronization signal and a physical broadcast channel block, a system information block, other system information, or a paging message.

5. A communication method, applied to a second network device, characterized in that: include: Sending a first position to a first network device, where the first position is a position of one or more subframes occupied by the first information; receiving a first offset and first multicast / multicast single frequency network configuration information from the first network device, wherein the first multicast / multicast single frequency network configuration information is used to determine a configuration state of a multicast / multicast single frequency network subframe within a first range, the first range being a position supporting configuration of a multicast / multicast single frequency network subframe, the multicast / multicast single frequency network subframe being configured according to the first position and the first offset; The first information is sent to the first terminal device on the time domain resource corresponding to the second position, wherein the second position is the position of the first position offset by the first offset, and the position of the multicast / groupcast single frequency network subframe includes the second position.

6. The method according to claim 5, characterized in that The one or more subframes corresponding to the second position include a first subframe, the first subframe is outside a second range, and the second range is a range of the first range offset by the first offset. The method further includes: Send first indication information to the first terminal device, where the first indication information is used to indicate rate matching on the time domain resources corresponding to the first subframe.

7. The method according to claim 5 or 6, characterized in that The method further comprises: Send second multicast / multicast single frequency network configuration information to the first terminal device, where the second multicast / multicast single frequency network configuration information is used to determine the configuration status of the multicast / multicast single frequency network subframe within a second range, where the second range is the range of the first range offset by the first offset.

8. The method according to claim 7, characterized in that The multicast / multicast single frequency network subframe includes a second subframe, where the second subframe is offset by the first offset and is located outside the first range, and the second multicast / multicast single frequency network configuration information includes second indication information, where the second indication information is used to instruct rate matching to be performed on a time domain resource corresponding to the second subframe.

9. The method according to claim 5 or 6, characterized in that The multicast / groupcast single frequency network subframe includes a second subframe, the second subframe is offset by the first offset and is located outside the first range, and the method further includes: Send second indication information to the first terminal device, where the second indication information is used to indicate rate matching on the time domain resources corresponding to the second subframe.

10. The method according to claim 5 or 6, characterized in that The first offset is an integer greater than 0 and less than 10.

11. The method according to claim 5 or 6, characterized in that The first information includes at least one of a synchronization signal and a physical broadcast channel block, a system information block, other system information, or a paging message.

12. A communication device, applied to a first network device, characterized in that: include: a communication unit, configured to receive a first position from a second network device, where the first position is a position of one or more subframes occupied by the first information; a processing unit, configured to determine a first offset, where the first offset is used to determine a second position, where the second position is a position of the first position offset by the first offset, and the second position is within a first range, where the first range is a position supporting configuration of a multicast / multicast single frequency network subframe; and configure the multicast / multicast single frequency network subframe according to the first position and the first offset, where the position of the multicast / multicast single frequency network subframe includes the second position; The communication unit is further configured to send the first offset and first multicast / multicast single frequency network configuration information to the second network device, where the first multicast / multicast single frequency network configuration information is used to determine a configuration state of the multicast / multicast single frequency network subframe within the first range.

13. The device according to claim 12, characterized in that The processing unit is specifically configured to: The first offset is determined according to the first position and the first range.

14. The device according to claim 12 or 13, characterized in that The first offset is an integer greater than 0 and less than 10.

15. The device according to claim 12 or 13, characterized in that The first information includes at least one of a synchronization signal and a physical broadcast channel block, a system information block, other system information, or a paging message.

16. A communication device, applied to a second network device, characterized in that: include: A communication unit, configured to send a first position to a first network device, where the first position is a position of one or more subframes occupied by the first information; Receive a first offset and first multicast / multicast single frequency network configuration information from the first network device, wherein the first multicast / multicast single frequency network configuration information is used to determine the configuration status of a multicast / multicast single frequency network subframe within a first range, the first range is a position supporting the configuration of a multicast / multicast single frequency network subframe, and the multicast / multicast single frequency network subframe is configured according to the first position and the first offset; and send the first information to the first terminal device on a time domain resource corresponding to a second position, wherein the second position is a position after the first position is offset by the first offset, and the position of the multicast / multicast single frequency network subframe includes the second position.

17. The device according to claim 16, characterized in that The one or more subframes corresponding to the second position include a first subframe, the first subframe is outside a second range, and the second range is a range of the first range offset by the first offset. The communication unit is further configured to: Send first indication information to the first terminal device, where the first indication information is used to indicate rate matching on the time domain resources corresponding to the first subframe.

18. The device according to claim 16 or 17, characterized in that The communication unit is further configured to: Send second multicast / multicast single frequency network configuration information to the first terminal device, where the second multicast / multicast single frequency network configuration information is used to determine the configuration status of the multicast / multicast single frequency network subframe within a second range, where the second range is the range of the first range offset by the first offset.

19. The device according to claim 18, characterized in that The multicast / multicast single frequency network subframe includes a second subframe, where the second subframe is offset by the first offset and is located outside the first range, and the second multicast / multicast single frequency network configuration information includes second indication information, where the second indication information is used to instruct rate matching to be performed on a time domain resource corresponding to the second subframe.

20. The device according to claim 16 or 17, characterized in that The multicast / groupcast single frequency network subframe includes a second subframe, the second subframe is offset by the first offset and is located outside the first range, and the communication unit is further configured to: Send second indication information to the first terminal device, where the second indication information is used to indicate rate matching on the time domain resources corresponding to the second subframe.

21. The device according to claim 16 or 17, characterized in that The first offset is an integer greater than 0 and less than 10.

22. The device according to claim 16 or 17, characterized in that The first information includes at least one of a synchronization signal and a physical broadcast channel block, a system information block, other system information, or a paging message.

23. A communication device, characterized in that: include: A processor is coupled to a memory, wherein the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the device performs the method according to any one of claims 1 to 4.

24. A communication device, characterized in that: include: A processor is coupled to a memory, wherein the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the device performs the method according to any one of claims 5 to 11.

25. A communication system, characterized in that: The method comprises a first network device and a second network device, wherein the first network device is used to implement the method according to any one of claims 1 to 4, and the second network device is used to implement the method according to any one of claims 5 to 11.

26. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is run on a computer, the computer is enabled to execute the method according to any one of claims 1 to 11.

27. A computer program product, characterized in that When the computer program product is run on a computer, the computer is caused to perform the method according to any one of claims 1 to 11.

28. A chip system, characterized in that: The chip system includes a processor, and the processor is used to execute the method according to any one of claims 1 to 11.

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