Communication method and related apparatus, storage medium, and program product

Abstract

A communication method and a related apparatus, a storage medium, and a program product, applied to the technical field of communications. The communication method comprises: a first standard base station receiving a second standard frequency band channel parameter from a second standard base station, and using the second standard frequency band channel parameter to calculate a cross-band channel measurement assistance parameter; sending the cross-band channel measurement assistance parameter to a user equipment; receiving an uplink pilot signal sent by the user equipment on the basis of the cross-band channel measurement assistance parameter; and using the uplink pilot signal and the cross-band channel measurement assistance parameter to perform channel estimation, so as to obtain a first standard frequency band channel parameter. The solution of the embodiment of the present application obtains the cross-band channel measurement assistance parameter by using the second standard frequency band channel parameter on the basis of the channel correlation between the frequency bands used by different standards, so as to assist the first standard base station in reducing the channel measurement-related overhead, thereby being conducive to improving the capacity and experience of a first standard system.

Description

Communication method and related device, storage medium and program product

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 31, 2024, with application number "202410152936.X", and invention name "Communication Method and Related Devices, Storage Medium and Program Product", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to communication methods and related devices, storage media, and program products. Background Art

[0003] Currently, 5G networks have begun large-scale commercial use, and 6G networks are already in the laboratory stage. 5G-6G non-independent networking can improve coverage in the early stages of 6G. In the process of deploying high-frequency spectrum networks, joint high- and low-frequency networking is a preferred form. For example, low-frequency bands (such as sub-6G) can provide basic coverage, such as uplink coverage, downlink obstruction caused by user mobility / indoor deep coverage, etc., while the large bandwidth provided by high frequencies can provide users with an extremely high-speed transmission experience. In terms of network deployment, high-frequency and low-frequency co-base station deployment solutions are being commercialized in order to efficiently reuse existing low-frequency site resources. Summary of the Invention

[0004] The embodiments of the present application provide a communication method and related devices, a storage medium, and a program product.

[0005] A first aspect of an embodiment of the present application provides a communication method, comprising: a first-standard base station receives a second-standard frequency band channel parameter from a second-standard base station. The first-standard base station uses the second-standard frequency band channel parameter to calculate an auxiliary parameter for cross-band channel measurement. The first-standard base station sends the auxiliary parameter for cross-band channel measurement to a user equipment. The first-standard base station receives an uplink pilot signal (the uplink pilot signal is, for example, an uplink sparse pilot signal) sent by the user equipment with reference to the auxiliary parameter for cross-band channel measurement. The first-standard base station uses the uplink pilot signal and the auxiliary parameter for cross-band channel measurement to perform channel estimation to obtain the first-standard frequency band channel parameter.

[0006] It can be seen that the embodiment of the present application, based on the channel correlation between the frequency bands used by different standards, uses the second-standard frequency band channel parameters to obtain cross-band channel measurement auxiliary parameters, thereby assisting the first-standard base station to reduce channel measurement-related overhead, which is beneficial to improving the capacity and experience of the first-standard system.

[0007] In some possible implementations, the method further includes: the first-standard base station receives an inter-frequency channel assisted measurement capability indication sent by the second-standard base station or the user equipment, wherein the inter-frequency channel assisted measurement capability indication is used to indicate that the user equipment has inter-frequency channel assisted measurement capability.

[0008] It can be seen that in the embodiment of the present application, the first-standard base station can learn whether the user equipment has the cross-band channel assisted measurement capability based on the cross-frequency channel assisted measurement capability indication, and then, when the user equipment has the cross-band channel assisted measurement capability, the user equipment can assist the first-standard base station in reducing the channel measurement-related overhead, which is conducive to improving the effectiveness of cross-band channel measurement assistance.

[0009] In some possible implementations, the method further includes: the first-standard base station receives at least one of the following parameters for calculating cross-frequency band channel measurement auxiliary parameters sent by the second-standard base station or the user equipment: the second-standard frequency band, the array element position parameter of the second-standard frequency band, the first-standard frequency band, and the array element position parameter of the first-standard frequency band.

[0010] It can be seen that the embodiment of the present application uses parameters such as the second standard frequency band, the array element position parameters of the second standard frequency band, the first standard frequency band, and the array element position parameters of the first standard frequency band to calculate the auxiliary parameters for cross-band channel measurement, which is conducive to improving the effectiveness of the auxiliary parameters for cross-band channel measurement.

[0011] In some possible implementations, before the first-standard base station sends the cross-frequency band channel measurement auxiliary parameters to the user equipment, it also includes: determining, based on the first-standard frequency band channel parameters and the second-standard frequency band channel parameters from the second-standard base station, whether the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets a preset condition.

[0012] It can be seen that in the embodiment of the present application, the first-standard base station can allow the user equipment to assist the first-standard base station in reducing the channel measurement-related overhead when it determines that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions. This is conducive to improving the effectiveness of cross-band channel measurement assistance.

[0013] In some possible implementations, the first standard may be 6G, the second standard may be 5G, the first standard base station may be a 6G base station, and the second standard base station may be a 5G base station. Of course, the first standard or the second standard may be other different standards, and the first standard base station and the second standard base station may also be base stations of other different communication systems.

[0014] A second aspect of an embodiment of the present application provides a communication method, which may include: a user device receives cross-band channel measurement auxiliary parameters sent by a first-standard base station, wherein the cross-band channel measurement auxiliary parameters are calculated using the second-standard frequency band channel parameters; the user device sends an uplink pilot signal (the uplink pilot signal is, for example, an uplink sparse pilot signal) to the first-standard base station with reference to the cross-band channel measurement auxiliary parameters, and the uplink pilot signal is used to perform channel estimation to obtain the first-standard frequency band channel parameters.

[0015] In some possible implementations, before the user equipment receives the cross-frequency channel measurement assistance parameters sent by the first-standard base station, it also includes: the user equipment sends an cross-frequency channel assistance measurement capability indication to the first-standard base station, and the cross-frequency channel assistance measurement capability indication is used to indicate that the user equipment has cross-frequency channel assistance measurement capability.

[0016] In some possible implementations, the method may further include: the user equipment sending, to the first-standard base station, at least one of the following parameters for calculating auxiliary parameters for cross-frequency channel measurement: the second-standard frequency band, an array element position parameter of the second-standard frequency band, the first-standard frequency band, and an array element position parameter of the first-standard frequency band. The user equipment may directly send the auxiliary parameters for calculating cross-frequency channel measurement to the first-standard base station, or the user equipment may send the auxiliary parameters for calculating cross-frequency channel measurement to the first-standard base station via the second-standard base station.

[0017] In some possible implementations, the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets a preset condition.

[0018] A third aspect of an embodiment of the present application provides a communication method, including: a first-standard base station sends a cross-band channel measurement auxiliary instruction to a user equipment, wherein the cross-band channel measurement auxiliary instruction is used to instruct the user equipment to calculate cross-band channel measurement auxiliary parameters; the first-standard base station receives an uplink pilot signal and cross-band channel measurement auxiliary parameters sent by the user equipment; the first-standard base station uses the uplink pilot signal and the cross-band channel measurement auxiliary parameters to perform channel estimation to obtain first-standard frequency band channel parameters.

[0019] In some possible implementations, the method further includes: the first-standard base station receives an inter-frequency channel assisted measurement capability indication sent by the second-standard base station or the user equipment, wherein the inter-frequency channel assisted measurement capability indication is used to indicate that the user equipment has inter-frequency channel assisted measurement capability.

[0020] In some possible implementations, before the first-standard base station sends the cross-frequency band channel measurement auxiliary indication to the user equipment, it also includes: the first-standard base station receives the second-standard frequency band channel parameters from the second-standard base station; based on the first-standard frequency band channel parameters and the second-standard frequency band channel parameters from the second-standard base station, determining that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions.

[0021] A fourth aspect of an embodiment of the present application provides a communication method, including: a user device receives a cross-band channel measurement auxiliary instruction sent by a first-standard base station, the cross-band channel measurement auxiliary instruction is used to instruct the user device to calculate cross-band channel measurement auxiliary parameters; the user device receives a downlink pilot signal sent by a second-standard base station; the user device uses the downlink pilot signal to perform channel estimation to obtain the second-standard frequency band channel parameters; the user device uses the second-standard frequency band channel parameters to calculate the cross-band channel measurement auxiliary parameters; the user device sends a pilot signal and cross-band channel measurement auxiliary parameters to the first-standard base station, and the pilot signal and the cross-band channel measurement auxiliary parameters are used to perform channel estimation to obtain the first-standard frequency band channel parameters.

[0022] In some possible implementations, before the user equipment receives the cross-frequency channel measurement assistance instruction sent by the first-standard base station, it also includes: the user equipment sends a cross-frequency channel assistance measurement capability indication to the first-standard base station, and the cross-frequency channel assistance measurement capability indication is used to indicate that the user equipment has cross-frequency channel assistance measurement capability.

[0023] In some possible implementations, the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets a preset condition.

[0024] A fifth aspect of an embodiment of the present application provides a communication device, comprising: a processor and a memory coupled to each other; the processor is used to call a program stored in the memory to implement part or all of the steps of any one of the methods provided in the embodiment of the present application.

[0025] A sixth aspect of an embodiment of the present application provides a communication chip, which is used to implement part or all of the steps of any one of the methods provided in the embodiments of the present application.

[0026] A seventh aspect of the present application provides a computer-readable storage medium, wherein:

[0027] The computer-readable storage medium stores a program, and when the program is run on a computer, the computer is caused to execute part or all of the steps of any one of the methods provided in the embodiments of the present application.

[0028] An eighth aspect of the embodiments of the present application provides a computer program product, wherein:

[0029] The computer program product includes a computer program, which, when executed on a computer, enables the computer to execute part or all of the steps of any one of the methods provided in the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of the architecture of a joint networking communication system provided in an embodiment of the present application;

[0031] FIG2 is a flow chart of a communication method provided in an embodiment of the present application;

[0032] FIG3 is a flow chart of another communication method provided in an embodiment of the present application;

[0033] FIG4 is a flow chart of another communication method provided in an embodiment of the present application;

[0034] FIG5 is a flow chart of another communication method provided in an embodiment of the present application;

[0035] FIG6 is a schematic diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0037] The terms "first", "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects rather than to describe a specific order.

[0038] Referring to Figure 1, Figure 1 is a schematic diagram of the network architecture of a communication system provided in an embodiment of the present application. The communication system is a joint networking system including at least two base stations of different standards. For example, the communication system may be a 5G-6G non-standalone networking (NSA, Non Standalone) system. The communication system includes a communication device that uses air interface resources for wireless communication. Among them, the communication device may include access network equipment and terminal equipment. The access network equipment may be referred to as a base station or base station equipment. The air interface resources may include at least one of time domain resources, frequency domain resources, code resources, and space resources.

[0039] The terminal device involved in the embodiments of the present application can also be referred to as a terminal, which can be a device with wireless transceiver capabilities, which can be deployed on land, such as indoors or outdoors, handheld or vehicle-mounted, etc.; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, balloon, and satellite, etc.). The terminal device can be a user equipment (UE, User Equipment), where the UE includes a handheld device with wireless communication capabilities, a vehicle-mounted device, a wearable device, or a computing device, etc. For example, the UE can be a mobile phone, a tablet computer, or a computer with wireless transceiver capabilities. In addition, the terminal device can also be, for example, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. In the embodiments of the present application, the device for realizing the function of the terminal can be a terminal; it can also be a device that can support the terminal to realize the function, such as a chip system, which can be installed in the terminal.

[0040] In the embodiments of the present application, the chip system can be composed of a chip or include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device used to implement the functions of the terminal is a terminal. For ease of description, the terminal will be collectively referred to as a UE below. Therefore, in the embodiments of the present application, the UE can be various product forms that implement the terminal functions.

[0041] The embodiments of the present application involve access network equipment such as a base station (BS). The BS is a device deployed in a wireless access network that can communicate wirelessly with a UE. Among them, the base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point. The base station involved in the embodiments of the present application may be a 5G base station or an evolved eNB (Evolved Node B) in LTE. The 5G base station may also be called a transmission reception point (TRP) or a gNB (Next-Generation Node B). The device for realizing the function of a network device in the embodiments of the present application may be a network device; it may also be a device (such as a chip system) that can support the network device to realize the function, and the device may be installed in the network device. For ease of description, the access network devices are collectively referred to as base stations below. Therefore, the base stations in the embodiments of the present application may be various product forms that realize the functions of the access network devices.

[0042] In the embodiments of the present application, the term "wireless communication" may also be referred to as "communication", and the term "communication" may also be referred to as "data transmission", "information transmission" or "signal transmission", etc.

[0043] The following is a detailed introduction to the embodiments of the present application.

[0044] Please refer to Figure 2, which is a flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 2, a communication method may include:

[0045] 201. The second-standard base station sends the second-standard frequency band channel parameters to the first-standard base station.

[0046] The second-standard base station may, for example, use an uplink pilot signal sent by the user equipment (eg, via an uplink channel of the second-standard frequency band) to perform channel estimation, thereby obtaining the second-standard frequency band channel parameters.

[0047] The second-standard base station may, for example, send the second-standard frequency band channel parameters to the first-standard base station via Secondary Node Modification signaling of the Xn interface. That is, the second-standard frequency band channel parameters may, for example, be carried in Secondary Node Modification signaling sent by the second-standard base station to the first-standard base station.

[0048] 202. The first-standard base station receives the second-standard frequency band channel parameters from the second-standard base station; the first-standard base station uses the second-standard frequency band channel parameters from the second-standard base station to calculate cross-band channel measurement auxiliary parameters.

[0049] 203. The first-standard base station sends the calculated cross-frequency band channel measurement auxiliary parameter to the user equipment.

[0050] In some possible implementations, before the first-standard base station sends the cross-band channel measurement auxiliary parameters to the user equipment, it also includes: determining, based on the first-standard frequency band channel parameters and the second-standard frequency band channel parameters from the second-standard base station, whether the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions (the preset conditions may, for example, include that the correlation between the first-standard frequency band channel and the second-standard frequency band channel is greater than or equal to a threshold). Of course, the first-standard base station may also determine that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions in other ways. In addition, the first-standard base station may even assume that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions, and directly send the calculated cross-band channel measurement auxiliary parameters to the user equipment. That is, before the first-standard base station sends the calculated cross-band channel measurement auxiliary parameters to the user equipment, it does not perform a confirmation operation that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions.

[0051] 204. The user equipment receives the cross-band channel measurement auxiliary parameters sent by the first-standard base station, and the user equipment sends an uplink sparse pilot signal (the uplink pilot signal is, for example, an uplink sparse pilot signal) to the first-standard base station with reference to the cross-band channel measurement auxiliary parameters. The uplink sparse pilot signal is used to perform channel estimation to obtain the first-standard frequency band channel parameters.

[0052] 205. The first-standard base station receives an uplink sparse pilot signal sent by the user equipment with reference to the cross-band channel measurement auxiliary parameter. The first-standard base station uses the uplink sparse pilot signal and the cross-band channel measurement auxiliary parameter to perform channel estimation to obtain the first-standard frequency band channel parameter.

[0053] In some possible implementations, the first-standard base station may further receive an inter-frequency channel assisted measurement capability indication sent by the second-standard base station or the user equipment, where the inter-frequency channel assisted measurement capability indication is used to indicate that the user equipment has inter-frequency channel assisted measurement capability.

[0054] It is understandable that the first-standard base station can learn that the user equipment has the cross-band channel assisted measurement capability based on the received cross-band channel assisted measurement capability indication. Of course, the first-standard base station may also learn whether the user equipment has the cross-band channel assisted measurement capability through other methods.

[0055] In addition, if the user equipment has the cross-frequency channel assisted measurement capability by default, the step of the second-standard base station or the user equipment sending the cross-frequency channel assisted measurement capability indication to the first-standard base station can also be omitted.

[0056] In some possible implementations, the first-standard base station may further receive at least one of the following parameters sent by the second-standard base station or the user equipment for calculating cross-frequency band channel measurement auxiliary parameters: the second-standard frequency band, the array element position parameter of the second-standard frequency band, the first-standard frequency band, and the array element position parameter of the first-standard frequency band.

[0057] In some possible implementations, the first-standard base station may be a 6G base station, and the second-standard base station may be a 5G base station. Of course, the first-standard base station and the second-standard base station may also be base stations of other different-standard communication systems.

[0058] It can be seen that the embodiment of the present application, based on the channel correlation between the frequency bands used by different standards, uses the second-standard frequency band channel parameters to obtain cross-band channel measurement auxiliary parameters, thereby assisting the first-standard base station to reduce channel measurement-related overhead, which is beneficial to improving the capacity and experience of the first-standard system.

[0059] Referring to Figure 3, Figure 3 is a flow chart of another communication method provided in an embodiment of the present application. As shown in Figure 3, another communication method may include:

[0060] 301. A first-standard base station sends an inter-frequency-band channel measurement assistance instruction to a user equipment, where the inter-frequency-band channel measurement assistance instruction is used to instruct the user equipment to calculate an inter-frequency-band channel measurement assistance parameter.

[0061] In some possible implementations, before the first-standard base station sends the cross-band channel measurement auxiliary instruction to the user equipment, it also includes: determining that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset condition based on the first-standard frequency band channel parameter and the second-standard frequency band channel parameter from the second-standard base station (the preset condition may, for example, include that the correlation between the first-standard frequency band channel and the second-standard frequency band channel is greater than or equal to a threshold). Of course, the first-standard base station may also determine that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset condition in other ways. In addition, the first-standard base station may even assume that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset condition, and directly send the calculated cross-band channel measurement auxiliary parameter to the user equipment. That is, before the first-standard base station sends the calculated cross-band channel measurement auxiliary parameter to the user equipment, it does not perform a confirmation operation that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset condition.

[0062] In some possible implementations, the first-standard base station may further receive an inter-frequency channel assisted measurement capability indication sent by the second-standard base station or the user equipment, where the inter-frequency channel assisted measurement capability indication is used to indicate that the user equipment has inter-frequency channel assisted measurement capability.

[0063] It is understandable that the first-standard base station can learn that the user equipment has the cross-band channel assisted measurement capability based on the received cross-band channel assisted measurement capability indication. Of course, the first-standard base station may also learn whether the user equipment has the cross-band channel assisted measurement capability through other methods.

[0064] In addition, if the user equipment has the cross-frequency channel assisted measurement capability by default, the step of the second-standard base station or the user equipment sending the cross-frequency channel assisted measurement capability indication to the first-standard base station can also be omitted.

[0065] 302. The user equipment receives an inter-band channel measurement auxiliary instruction from a first-standard base station, and the user equipment also receives a downlink pilot signal sent by a second-standard base station.

[0066] 303. The user equipment uses the downlink pilot signal to perform channel estimation to obtain second-standard frequency band channel parameters.

[0067] 304. The user equipment uses the second-standard frequency band channel parameters to calculate cross-frequency band channel measurement auxiliary parameters.

[0068] 305. The user equipment sends cross-band channel measurement auxiliary parameters to the first-standard base station, and sends an uplink sparse pilot signal (for example, an uplink sparse pilot signal) to the first-standard base station with reference to the cross-band channel measurement auxiliary parameters.

[0069] 306. The first-standard base station receives an uplink sparse pilot signal and cross-band channel measurement auxiliary parameters sent by the user equipment, and the first-standard base station uses the uplink sparse pilot signal and the cross-band channel measurement auxiliary parameters to perform channel estimation to obtain the first-standard frequency band channel parameters.

[0070] In some possible implementations, the first-standard base station may be a 6G base station, and the second-standard base station may be a 5G base station. Of course, the first-standard base station and the second-standard base station may also be base stations of other different-standard communication systems.

[0071] It can be seen that the embodiment of the present application, based on the channel correlation between the frequency bands used by different standards, uses the second-standard frequency band channel parameters to obtain cross-band channel measurement auxiliary parameters, thereby assisting the first-standard base station to reduce channel measurement-related overhead, which is beneficial to improving the capacity and experience of the first-standard system.

[0072] The following description is given by way of example in which the first-standard base station is a 6G base station and the second-standard base station is a 5G base station. The same applies to scenarios in which the first-standard base station and the second-standard base station are base stations in other different-standard systems.

[0073] Referring to Figure 4, Figure 4 is a flow chart of another communication method provided in an embodiment of the present application. As shown in Figure 4, another communication method may include:

[0074] 401. The 6G base station sends a UE capability reporting request message to the 5G base station.

[0075] After receiving the UE capability reporting request message from the 6G base station, the 402.5G base station forwards the UE capability reporting request message to the UE.

[0076] 403. After receiving the UE capability reporting request message forwarded by the 5G base station, the UE sends a UE capability reporting request response message to the 5G base station. The 5G base station forwards the UE capability reporting request response message to the 6G base station.

[0077] Among them, the UE capability reporting request response message carries an inter-frequency channel assisted measurement capability indication, which is used to indicate whether the UE has inter-frequency channel assisted measurement capability. The 6G base station can learn whether the UE has inter-frequency channel assisted measurement capability based on the received inter-frequency channel assisted measurement capability indication.

[0078] In some possible implementations, the UE capability reporting request message may also carry at least one of the following parameters for calculating cross-band channel measurement auxiliary parameters: 5G frequency band, array element position parameters of the 5G frequency band, 6G frequency band, and array element position parameters of the 6G frequency band.

[0079] In some possible implementations, the 6G base station may, for example, use the SgNB addition request process or other interactive processes to learn about the UE's capabilities (including the UE's cross-band channel assisted measurement capabilities, etc.).

[0080] In addition, a Radio Resource Control (RRC) connection can be established between the 6G base station and the UE, and the UE can report its capabilities to the 6G base station through the RRC connection. In this case, there is no need for the 5G base station to forward the messages related to UE capability reporting exchanged between the 6G base station and the UE.

[0081] 404.UE sends an uplink low-frequency non-sparse pilot signal SRS to the 5G base station through the 5G frequency band uplink channel low .

[0082] 405.5G base station receives uplink low-frequency non-sparse pilot signal SRS from UE low , using uplink low-frequency non-sparse pilot signal SRS low Channel estimation is performed to obtain the 5G frequency band uplink channel parameter H_Low.

[0083] 406.UE sends uplink high-frequency non-sparse pilot signal SRS to 6G base station through 6G frequency band uplink channel high .

[0084] The 407.6G base station receives the uplink high-frequency pilot signal SRS from the UE high , using uplink high frequency non-sparse pilot signal SRS high Channel estimation is performed to obtain the 6G band (uplink / downlink) channel parameter H_high.

[0085] 408. The 6G base station requests the 5G base station to obtain the 5G frequency band (uplink / downlink) channel parameter H_Low obtained by channel estimation.

[0086] 409. The 5G base station sends the 5G frequency band (uplink / downlink) channel parameter H_Low obtained by channel estimation to the 6G base station.

[0087] In some possible implementations, the 5G base station may, for example, send the 5G frequency band uplink channel parameters to the 6G base station via Secondary Node Modification signaling of the Xn interface. That is, the 5G frequency band uplink channel parameters may, for example, be carried in the Secondary Node Modification signaling sent by the 5G base station to the 6G base station.

[0088] The 410.6G base station uses the 6G band (uplink / downlink) channel parameter H_high and the 5G band (uplink / downlink) channel parameter H_Low from the 5G base station to calculate the correlation between the 6G band channel and the 5G band channel.

[0089] 411. If the correlation between the 6G band channel and the 5G band channel is greater than or equal to the threshold, the 6G base station uses the 5G band (uplink / downlink) channel parameter H_Low from the 5G base station to calculate the cross-band channel measurement auxiliary parameter.

[0090] In some possible implementations, the calculation of the cross-band channel measurement auxiliary parameters may further use at least one of the following parameters: a 5G frequency band, an array element position parameter of the 5G frequency band, a 6G frequency band, and an array element position parameter of the 6G frequency band.

[0091] The 412.6G base station sends the calculated cross-band channel measurement auxiliary parameters to the UE.

[0092] 413. The UE receives the cross-band channel measurement auxiliary parameters sent by the 6G base station, and the UE sends an uplink sparse pilot signal to the 6G base station with reference to the cross-band channel measurement auxiliary parameters.

[0093] The 414.6G base station receives the uplink sparse pilot signal sent by the UE with reference to the cross-band channel measurement auxiliary parameters. The 6G base station uses the uplink sparse pilot signal and the cross-band channel measurement auxiliary parameters to perform channel estimation to obtain the updated 6G band channel parameter H_high (such as the 6G band uplink / downlink channel parameters, etc.).

[0094] It can be seen that the embodiment of the present application, based on the channel correlation between the frequency bands used by 5G and 6G, uses the 5G frequency band channel parameters to obtain cross-band channel measurement auxiliary parameters, thereby assisting the 6G base station to reduce channel measurement-related overhead, which is beneficial to improving the capacity and experience of the 6G system.

[0095] Referring to Figure 5, Figure 5 is a flow chart of another communication method provided in an embodiment of the present application. As shown in Figure 5, another communication method may include:

[0096] The 501.6G base station sends a UE capability reporting request message to the 5G base station.

[0097] After receiving the UE capability reporting request message from the 6G base station, the 502.5G base station forwards the UE capability reporting request message to the UE.

[0098] 503. After receiving the UE capability reporting request message forwarded by the 5G base station, the UE sends a UE capability reporting request response message to the 5G base station. The 5G base station forwards the UE capability reporting request response message to the 6G base station.

[0099] Among them, the UE capability reporting request response message carries an inter-frequency channel assisted measurement capability indication, which is used to indicate whether the UE has inter-frequency channel assisted measurement capability. The 6G base station can learn whether the UE has inter-frequency channel assisted measurement capability based on the received inter-frequency channel assisted measurement capability indication.

[0100] In some possible implementations, the UE capability reporting request message may also carry at least one of the following parameters for calculating cross-band channel measurement auxiliary parameters: 5G frequency band, array element position parameters of the 5G frequency band, 6G frequency band, and array element position parameters of the 6G frequency band.

[0101] In some possible implementations, the 6G base station may, for example, use the SgNB addition request process or other interactive processes to learn about the UE's capabilities (including the UE's cross-band channel assisted measurement capabilities, etc.).

[0102] In addition, a Radio Resource Control (RRC) connection can be established between the 6G base station and the UE, and the UE can report its capabilities to the 6G base station through the RRC connection. In this case, there is no need for the 5G base station to forward the messages related to UE capability reporting exchanged between the 6G base station and the UE.

[0103] 504.UE sends an uplink low-frequency non-sparse pilot signal SRS to the 5G base station through the 5G frequency band uplink channel low .

[0104] 505.5G base station receives uplink low-frequency non-sparse pilot signal SRS from UE low , using uplink low-frequency non-sparse pilot signal SRS low Channel estimation is performed to obtain the 5G frequency band uplink channel parameter H_Low.

[0105] 506.UE sends uplink high-frequency non-sparse pilot signal SRS to 6G base station through 6G frequency band uplink channel high .

[0106] The 507.6G base station receives the uplink high-frequency pilot signal SRS from the UE high , using uplink high frequency non-sparse pilot signal SRS high Channel estimation is performed to obtain the 6G band uplink channel parameter H_high.

[0107] The 508.6G base station requests the 5G base station for the 5G frequency band uplink channel parameter H_Low obtained through its channel estimation.

[0108] 509. The 5G base station sends the 5G frequency band uplink channel parameter H_Low obtained by channel estimation to the 6G base station.

[0109] In some possible implementations, the 5G base station may, for example, send the 5G frequency band uplink channel parameters to the 6G base station via Secondary Node Modification signaling of the Xn interface. That is, the 5G frequency band uplink channel parameters may, for example, be carried in the Secondary Node Modification signaling sent by the 5G base station to the 6G base station.

[0110] The 510.6G base station uses the 6G band (uplink / downlink) channel parameter H_high and the 5G band (uplink / downlink) channel parameter H_Low from the 5G base station to calculate the correlation between the 6G band channel and the 5G band channel.

[0111] 511. If the correlation between the 6G band channel and the 5G band channel is greater than or equal to the threshold, the 6G base station sends a cross-band channel measurement auxiliary instruction to the UE.

[0112] 512. The UE receives the cross-band channel measurement auxiliary instruction from the 6G base station, and the UE also receives the 5G downlink low-frequency pilot signal CSI-RS sent by the 5G base station low .

[0113] 513.UE uses 5G downlink low-frequency pilot signal CSI-RS low Channel estimation is performed to obtain the 5G frequency band (uplink / downlink) channel parameter H_Low.

[0114] 514. The UE uses the estimated 5G band (uplink / downlink) channel parameter H_Low to calculate the cross-band channel measurement auxiliary parameters.

[0115] In some possible implementations, the calculation of the cross-band channel measurement auxiliary parameters may further use at least one of the following parameters: a 5G frequency band, an array element position parameter of the 5G frequency band, a 6G frequency band, and an array element position parameter of the 6G frequency band.

[0116] 515.UE sends cross-band channel measurement auxiliary parameters to the 6G base station, and sends an uplink sparse pilot signal SRS to the 6G base station with reference to the cross-band channel measurement auxiliary parameters low .

[0117] The 516.6G base station receives the uplink sparse pilot signal and cross-band channel measurement auxiliary parameters sent by the UE, and the 6G base station uses the uplink sparse pilot signal and cross-band channel measurement auxiliary parameters to perform channel estimation to obtain the updated 6G band channel parameter H_high (such as 6G band uplink / downlink channel parameters, etc.).

[0118] It can be seen that the embodiment of the present application, based on the channel correlation between the frequency bands used by 5G and 6G, uses the 5G frequency band channel parameters to obtain cross-band channel measurement auxiliary parameters, thereby assisting the 6G base station to reduce channel measurement-related overhead, which is beneficial to improving the capacity and experience of the 6G system.

[0119] The following example provides a method for using the second standard frequency band channel parameter h l (e.g. 5G band channel parameters), the second standard frequency band (e.g. 5G band) and the array element position parameter C of the second standard frequency band l (For example, the array element position parameters of the 5G frequency band), and possible implementation methods for calculating the auxiliary parameter V for cross-band channel measurement.

[0120] Among them, the second standard frequency band channel parameter h l It can be expressed as The channel consists of K paths, g k represents the complex gain of the kth path, θ kis the arrival angle / departure angle of the kth path, a(θ k ) represents the array steering vector of the kth path.

[0121] Furthermore, h l It can be expressed as a matrix form h l =Ag l , where A=[a(θ1),…,a(θ K )]. Wherein, A represents the array steering vector set (or array steering vector matrix) corresponding to the second standard frequency band.

[0122] The Jacobi-Anger approximate decomposition is performed on the array steering vector set A to decompose the array steering vector set A into the array element position parameters C l The product of V and the cross-band channel measurement auxiliary parameter.

[0123] First, for the array steering vector a(θ k ) an element [a(θ k )] n It can be decomposed as follows:

[0124] in, It contains the array element position parameters.

[0125] in, This includes the channel path cluster parameters.

[0126] Among them, i=-I,...,I,

[0127] Furthermore, the array steering vector a(θ k ) can be expressed as a(θ k )=C l v(θ k ), where C l =[c1,…,c N ] T Indicates the array element position parameters of the second standard frequency band.

[0128] Furthermore, the array steering vector set A can be expressed as A=C l V, where V=[v(θ1),…,v(θ K )] represents the cross-band channel auxiliary measurement parameters.

[0129] Therefore, the second standard frequency band channel parameter h l It can be further expressed as h l =Ag l =C l Vg l . Due to hl and C l is known, so the cross-band channel measurement auxiliary parameter V can be obtained.

[0130] That is, using the second standard frequency band channel parameter h l , the second standard frequency band and the array element position parameter C of the second standard frequency band l Calculating the cross-band channel measurement auxiliary parameter V may include:

[0131] First, calculate the equivalent channel of the second standard frequency band channel

[0132] Afterwards, the covariance matrix of the equivalent channel is calculated

[0133] Then, the covariance matrix R of the equivalent channel is subjected to eigenvalue decomposition to obtain the cross-band channel measurement auxiliary parameter V.

[0134] It should be noted that the above method of calculating the cross-band channel measurement auxiliary parameter V is only an example of a possible implementation method. In specific practice, other calculation methods may also be used, which will not be given as examples here.

[0135] 6 , an embodiment of the present application further provides a communication device 600, which may include:

[0136] A processor 610 and a memory 620 are coupled to each other; the processor is used to call the program stored in the memory to implement part or all of the steps of any method provided in the embodiments of the present application.

[0137] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by hardware (such as a processor), it can complete some or all steps of any method in the embodiment of the present application.

[0138] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, and the computer program is executed by hardware (such as a processor, etc.) to implement part or all of the steps of any method performed by any device in the embodiment of the present application.

[0139] The embodiments of the present application also provide a computer program product including instructions, which, when executed on a computer device, enables the computer device to execute part or all of the steps of any one of the methods in the embodiments of the present application.

[0140] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. Wherein, the computer may be a general-purpose computer, a special-purpose computer, a computer network, 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 a 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) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. Available media may be magnetic media (e.g., floppy disk, hard disk, or tape), optical media (e.g., optical disk), or semiconductor media (e.g., solid-state hard disk), etc. In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0141] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0142] In the several embodiments provided in this application, it should be understood that the disclosed devices can also be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components that can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the indirect coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0143] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0144] Each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The above-mentioned integrated units may be implemented in the form of hardware or software functional units.

[0145] Wherein, if the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (for example, a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium may include, for example: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

Claims

1. A communication method, characterized in that: include: The first-standard base station receives the second-standard frequency band channel parameters from the second-standard base station; The first-standard base station calculates the cross-frequency band channel measurement auxiliary parameters using the second-standard frequency band channel parameters; The first-standard base station sends the cross-frequency band channel measurement auxiliary parameter to the user equipment; the first-standard base station receives the uplink pilot signal sent by the user equipment with reference to the cross-frequency band channel measurement auxiliary parameter; The first-standard base station uses the uplink pilot signal and the cross-frequency band channel measurement auxiliary parameters to perform channel estimation to obtain the first-standard frequency band channel parameters.

2. The method according to claim 1, characterized in that The method further includes: the first-standard base station receiving an inter-frequency channel assisted measurement capability indication sent by the second-standard base station or the user equipment, where the inter-frequency channel assisted measurement capability indication is used to indicate that the user equipment has inter-frequency channel assisted measurement capability.

3. The method according to claim 1 or 2, characterized in that The method further comprises: The first-standard base station receives at least one of the following parameters for calculating cross-frequency band channel measurement auxiliary parameters sent by the second-standard base station or the user equipment: the second-standard frequency band, the array element position parameter of the second-standard frequency band, the first-standard frequency band, and the array element position parameter of the first-standard frequency band.

4. The method according to any one of claims 1 to 3, characterized in that Before the first-standard base station sends the cross-band channel measurement auxiliary parameters to the user equipment, it also includes: determining based on the first-standard frequency band channel parameters and the second-standard frequency band channel parameters from the second-standard base station whether the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets the preset conditions.

5. The method according to any one of claims 1 to 4, characterized in that The first-standard base station is a 6G base station, and the second-standard base station is a 5G base station.

6. A communication method, characterized in that: include: The user equipment receives the inter-frequency band channel measurement auxiliary parameter sent by the first-standard base station, where the inter-frequency band channel measurement auxiliary parameter is calculated using the second-standard frequency band channel parameter; The user equipment sends an uplink pilot signal to the first-standard base station with reference to the cross-frequency band channel measurement auxiliary parameter, where the uplink pilot signal is used for channel estimation to obtain the first-standard frequency band channel parameter.

7. The method according to claim 6, characterized in that Before the user equipment receives the cross-frequency channel measurement auxiliary parameter sent by the first-standard base station, it also includes: the user equipment sends an cross-frequency channel auxiliary measurement capability indication to the first-standard base station, and the cross-frequency channel auxiliary measurement capability indication is used to indicate that the user equipment has cross-frequency channel auxiliary measurement capability.

8. The method according to claim 6 or 7, characterized in that The method also includes: the user equipment sending at least one of the following parameters for calculating cross-frequency band channel measurement auxiliary parameters to the first-standard base station: the second-standard frequency band, the array element position parameter of the second-standard frequency band, the first-standard frequency band, and the array element position parameter of the first-standard frequency band.

9. The method according to any one of claims 6 to 8, characterized in that The correlation between the first-standard frequency band channel and the second-standard frequency band channel meets a preset condition.

10. A communication method, characterized in that: include: The first-standard base station sends an inter-frequency-band channel measurement assistance instruction to the user equipment, where the inter-frequency-band channel measurement assistance instruction is used to instruct the user equipment to calculate an inter-frequency-band channel measurement assistance parameter; The first-standard base station receives the uplink pilot signal and the cross-band channel measurement auxiliary parameter sent by the user equipment; The first-standard base station uses the uplink pilot signal and the cross-frequency band channel measurement auxiliary parameters to perform channel estimation to obtain first-standard frequency band channel parameters.

11. The method according to claim 10, characterized in that The method further includes: the first-standard base station receiving an inter-frequency channel assisted measurement capability indication sent by the second-standard base station or the user equipment, where the inter-frequency channel assisted measurement capability indication is used to indicate that the user equipment has inter-frequency channel assisted measurement capability.

12. The method according to claim 10 or 11, characterized in that Before the first-standard base station sends the cross-frequency band channel measurement auxiliary indication to the user equipment, the method further includes: The first-standard base station receives the second-standard frequency band channel parameters from the second-standard base station; Based on the first-standard frequency band channel parameter and the second-standard frequency band channel parameter from the second-standard base station, it is determined that the correlation between the first-standard frequency band channel and the second-standard frequency band channel meets a preset condition.

13. The method according to claim 12, characterized in that The first-standard base station is a 6G base station, and the second-standard base station is a 5G base station.

14. A communication method, characterized in that: include: The user equipment receives an inter-frequency band channel measurement auxiliary instruction sent by a first-standard base station, where the inter-frequency band channel measurement auxiliary instruction is used to instruct the user equipment to calculate an inter-frequency band channel measurement auxiliary parameter; The user equipment receives a downlink pilot signal sent by a base station of the second standard; The user equipment uses the downlink pilot signal to perform channel estimation to obtain channel parameters of a second frequency band; The user equipment calculates the cross-frequency band channel measurement auxiliary parameter using the second-standard frequency band channel parameter; The user equipment sends a pilot signal and cross-frequency band channel measurement auxiliary parameters to the first-standard base station, where the pilot signal and the cross-frequency band channel measurement auxiliary parameters are used to perform channel estimation to obtain first-standard frequency band channel parameters.

15. The method according to claim 14, characterized in that Before the user equipment receives the cross-frequency channel measurement assistance instruction sent by the first-standard base station, it also includes: the user equipment sends an cross-frequency channel assistance measurement capability indication to the first-standard base station, and the cross-frequency channel assistance measurement capability indication is used to indicate that the user equipment has cross-frequency channel assistance measurement capability.

16. The method according to any one of claims 14 to 15, characterized in that The correlation between the first-standard frequency band channel and the second-standard frequency band channel meets a preset condition.

17. A communication device, characterized in that: include: a processor and memory coupled to each other; The processor is configured to call the program stored in the memory to implement the method according to any one of claims 1 to 16.

18. A communication chip, characterized in that: The communication chip is used to implement the method described in any one of claims 1 to 16.

19. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a program, and when the program is run on a computer, the computer is caused to execute the method according to any one of claims 1 to 16.

20. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is run on a computer, the computer is caused to perform the method according to any one of claims 1 to 16.

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