Communication method and related device, storage medium and program product

Abstract

The embodiment of the invention provides a communication method, a related device, a storage medium and a program product, and is applied to the technical field of communication. The communication method comprises the following steps that: a first system base station receives a second system frequency band channel parameter from a second system base station, and calculates a cross-frequency band channel measurement auxiliary parameter by using the second system frequency band channel parameter; and sending the cross-band channel measurement auxiliary parameter to the user equipment, receiving an uplink pilot signal sent by the user equipment referring to the cross-band channel measurement auxiliary parameter, and performing channel estimation by using the uplink pilot signal and the cross-band channel measurement auxiliary parameter to obtain a first system frequency band channel parameter. According to the scheme provided by the embodiment of the invention, the cross-band channel measurement auxiliary parameter is obtained by using the second system frequency band channel parameter based on the channel correlation between the frequency bands used by different systems, so that the first system base station is assisted to reduce the related overhead of channel measurement, and the capacity and experience of the first system system are improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to communication methods, related devices, storage media, and program products. Background Art

[0002] Currently, 5G networks have begun large-scale commercial use, and 6G networks are also in the laboratory stage. Non-standalone networking of 5G-6G can improve coverage in the initial stage of 6G. In the process of deploying high-frequency spectrum networks, co-deployment of high and low frequencies is a preferred form. For example, low-frequency bands (such as sub-6G) can provide basic coverage, such as uplink coverage, downlink occlusion caused by user movement / 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, the co-base station deployment solution for high and low frequencies is being commercialized to efficiently reuse the original low-frequency site resources. Summary of the Invention

[0003] Embodiments of this application provide a communication method, related devices, storage media, and program products.

[0004] In a first aspect of an embodiment of this application, a communication method is provided, including: a first-mode base station receives second-mode frequency band channel parameters from a second-mode base station. The first-mode base station calculates cross-band channel measurement auxiliary parameters using the second-mode frequency band channel parameters. The first-mode base station sends the cross-band channel measurement auxiliary parameters to a user equipment. The first-mode 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 cross-band channel measurement auxiliary parameters. The first-mode base station performs channel estimation using the uplink pilot signal and the cross-band channel measurement auxiliary parameters to obtain first-mode frequency band channel parameters.

[0005] It can be seen that the solution of the embodiment of this application, based on the channel correlation between the frequency bands used by different modes, uses the second-mode frequency band channel parameters to obtain cross-band channel measurement auxiliary parameters, and further assists the first-mode base station in reducing the channel measurement-related overhead, thereby being beneficial to improving the capacity and experience of the first-mode system.

[0006] In some possible implementation manners, the method further includes: the first-mode base station receives a cross-band channel auxiliary measurement capability indication sent by the second-mode base station or the user equipment, and the cross-band channel auxiliary measurement capability indication is used to indicate that the user equipment has cross-band channel auxiliary measurement capability.

[0007] It can be seen that in the solution of the embodiment of the present application, the first-mode base station can learn whether the user equipment has the cross-band channel assisted measurement ability according to the cross-band channel assisted measurement ability indication. Furthermore, when the user equipment has the cross-band channel assisted measurement ability, the first-mode base station can let the user equipment assist in reducing the channel measurement related overhead, which is beneficial to improving the effectiveness of cross-band channel measurement assistance.

[0008] In some possible implementation manners, the method further includes: the first-mode base station receives at least one of the following parameters for calculating cross-band channel measurement assistance parameters sent by the second-mode base station or the user equipment: the second-mode frequency band, the array element position parameter of the second-mode frequency band, the first-mode frequency band, and the array element position parameter of the first-mode frequency band.

[0009] It can be seen that in the solution of the embodiment of the present application, using parameters such as the second-mode frequency band, the array element position parameter of the second-mode frequency band, the first-mode frequency band, and the array element position parameter of the first-mode frequency band to calculate cross-band channel measurement assistance parameters is beneficial to improving the effectiveness of cross-band channel measurement assistance parameters.

[0010] In some possible implementation manners, before the first-mode base station sends the cross-band channel measurement assistance parameters to the user equipment, it further includes: determining that the correlation between the first-mode frequency band channel and the second-mode frequency band channel satisfies a preset condition based on the first-mode frequency band channel parameters and the second-mode frequency band channel parameters from the second-mode base station.

[0011] It can be seen that in the solution of the embodiment of the present application, when the first-mode base station determines that the correlation between the first-mode frequency band channel and the second-mode frequency band channel satisfies a preset condition, it can let the user equipment assist in reducing the channel measurement related overhead, which is beneficial to improving the effectiveness of cross-band channel measurement assistance.

[0012] In some possible implementation manners, the first mode may be 6G, the second mode may be 5G, the first-mode base station may be a 6G base station, and the second-mode base station may be a 5G base station. Of course, the first mode or the second mode may be other different modes, and the first-mode base station and the first-mode base station may also be base stations of other different mode communication systems.

[0013] The second aspect of the embodiment of the present application provides a communication method, which may include: the user equipment receives cross-band channel measurement assistance parameters sent by the first-mode base station, and the cross-band channel measurement assistance parameters are calculated using second-mode frequency band channel parameters; the user equipment refers to the cross-band channel measurement assistance parameters and sends an uplink pilot signal (the uplink pilot signal is, for example, an uplink sparse pilot signal) to the first-mode base station, and the uplink pilot signal is used to obtain first-mode frequency band channel parameters for channel estimation.

[0014] In some possible embodiments, before the user equipment receives the cross-band channel measurement assistance parameters sent by the first-mode base station, the method further includes: the user equipment sending a cross-band channel assistance measurement capability indication to the first-mode base station, where the cross-band channel assistance measurement capability indication is used to indicate that the user equipment has the cross-band channel assistance measurement capability.

[0015] In some possible embodiments, the method may further include: the user equipment sending at least one of the following parameters for calculating the cross-band channel measurement assistance parameters to the first-mode base station: the second-mode frequency band, the array element position parameter of the second-mode frequency band, the first-mode frequency band, and the array element position parameter of the first-mode frequency band. The user equipment may directly send the parameters for calculating the cross-band channel measurement assistance parameters to the first-mode base station, or the user equipment may also send the parameters for calculating the cross-band channel measurement assistance parameters to the first-mode base station through the second-mode base station.

[0016] In some possible embodiments, the correlation between the first-mode frequency band channel and the second-mode frequency band channel satisfies a preset condition.

[0017] A third aspect of the embodiments of the present application provides a communication method, including: a first-mode base station sending a cross-band channel measurement assistance instruction to a user equipment, where the cross-band channel measurement assistance instruction is used to instruct the user equipment to calculate cross-band channel measurement assistance parameters; the first-mode base station receiving the uplink pilot signal and the cross-band channel measurement assistance parameters sent by the user equipment; and the first-mode base station using the uplink pilot signal and the cross-band channel measurement assistance parameters to perform channel estimation to obtain the first-mode frequency band channel parameters.

[0018] In some possible embodiments, the method further includes: the first-mode base station receiving the cross-band channel assistance measurement capability indication sent by the second-mode base station or the user equipment, where the cross-band channel assistance measurement capability indication is used to indicate that the user equipment has the cross-band channel assistance measurement capability.

[0019] In some possible embodiments, before the first-mode base station sends a cross-band channel measurement assistance indication to the user equipment, the method further includes: the first-mode base station receiving the second-mode frequency band channel parameters from the second-mode base station; and determining that the correlation between the first-mode frequency band channel and the second-mode frequency band channel satisfies a preset condition based on the first-mode frequency band channel parameters and the second-mode frequency band channel parameters from the second-mode base station.

[0020] A fourth aspect of the embodiments of the present application provides a communication method, including: a user equipment receives a cross-band channel measurement assistance instruction sent by a first-mode base station, where the cross-band channel measurement assistance instruction is used to instruct the user equipment to calculate cross-band channel measurement assistance parameters; the user equipment receives a downlink pilot signal sent by a second-mode base station; the user equipment uses the downlink pilot signal to perform channel estimation to obtain second-mode band channel parameters; the user equipment uses the second-mode band channel parameters to calculate cross-band channel measurement assistance parameters; the user equipment sends a pilot signal and cross-band channel measurement assistance parameters to the first-mode base station, and the pilot signal and the cross-band channel measurement assistance parameters are used for channel estimation to obtain first-mode band channel parameters.

[0021] In some possible implementation manners, before the user equipment receives the cross-band channel measurement assistance instruction sent by the first-mode base station, it further includes: the user equipment sends a cross-band channel assisted measurement capability indication to the first-mode base station, and the cross-band channel assisted measurement capability indication is used to indicate that the user equipment has the cross-band channel assisted measurement capability.

[0022] In some possible implementation manners, the correlation between the first-mode band channel and the second-mode band channel satisfies a preset condition.

[0023] A fifth aspect of the embodiments of the present application provides a communication device, including: a processor and a memory that are 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 method provided by the embodiments of the present application.

[0024] A sixth aspect of the embodiments of the present application provides a communication chip, and the communication chip is used to implement part or all of the steps of any method provided by the embodiments of the present application.

[0025] A seventh aspect of the embodiments of the present application provides a computer-readable storage medium, where

[0026] the computer-readable storage medium stores a program, and when the program runs on a computer, it causes the computer to execute part or all of the steps of any method provided by the embodiments of the present application.

[0027] An eighth aspect of the embodiments of the present application provides a computer program product, where

[0028] the computer program product includes a computer program, and when the computer program runs on a computer, it causes the computer to execute part or all of the steps of any method provided by the embodiments of the present application. Description of the Drawings

[0029] Figure 1It is a schematic diagram of the architecture of a joint networking communication system provided by an embodiment of the present application;

[0030] Figure 2 It is a schematic flow diagram of a communication method provided by an embodiment of the present application;

[0031] Figure 3 It is a schematic flow diagram of another communication method provided by an embodiment of the present application;

[0032] Figure 4 It is a schematic flow diagram of another communication method provided by an embodiment of the present application;

[0033] Figure 5 It is a schematic flow diagram of another communication method provided by an embodiment of the present application;

[0034] Figure 6 It is a schematic diagram of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0036] Terms such as "first" and "second" in the specification, claims and above-mentioned drawings of the present application are used to distinguish different objects, rather than to describe a specific order.

[0037] See Figure 1 , Figure 1 It is a schematic diagram of the network architecture of a communication system provided by an embodiment of the present application. The communication system is a joint networking system including at least two types of base stations. For example, the communication system can be a 5G-6G non-standalone (NSA) system. The communication system includes communication devices that use air interface resources for wireless communication. Among them, the communication devices may include access network devices and terminal devices, and the access network devices may be referred to as base stations or base station devices. The air interface resources may include at least one of time domain resources, frequency domain resources, code resources, and space resources.

[0038] The terminal device involved in the embodiments of this application can also be referred to as a terminal. It can be a device with wireless transceiver functions, 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, deployed on an airplane, balloon, satellite, etc.). The terminal device can be a user equipment (UE). Among them, the UE includes handheld devices, vehicle-mounted devices, wearable devices or computing devices with wireless communication functions, etc. Exemplarily, the UE can be a mobile phone, a tablet computer or a computer with wireless transceiver functions, etc. In addition, the terminal device can also be 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 remote medical treatment, 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 this application, the device for implementing the functions of the terminal can be the terminal; it can also be a device capable of supporting the terminal to implement this function, such as a chip system, and this device can be installed in the terminal.

[0039] In the embodiments of this application, the chip system can be composed of chips, or can also include chips and other discrete devices. In the technical solutions provided in the embodiments of this application, the device for implementing the functions of the terminal is the terminal. For ease of description, the terminal will be collectively referred to as the UE below. Therefore, in the embodiments of this application, the UE can be various product forms for implementing the functions of the terminal.

[0040] The embodiments of this application involve access network devices such as base stations (BS). The BS is a device deployed in the radio access network that can communicate wirelessly with the UE. Among them, the base station may have various forms, such as macro base stations, micro base stations, relay stations and access points, etc. The base stations involved in the embodiments of this application can be 5G base stations or evolved eNBs (Evolved Node Bs) in LTE. The 5G base station can also be referred to as a transmission reception point (TRP) or a gNB (Next-Generation Node B). In the embodiments of this application, the device for implementing the functions of the network device can be the network device; it can also be a device capable of supporting the network device to implement this function (such as a chip system), and this device can be installed in the network device. For ease of description, the access network devices will be collectively referred to as base stations below. Therefore, in the embodiments of this application, the base station can be various product forms for implementing the functions of the access network device.

[0041] In the embodiments of the present application, the term "wireless communication" may also be abbreviated as "communication", and the term "communication" may also be referred to as "data transmission", "information transmission", "signal transmission", etc.

[0042] The solutions of the embodiments of the present application will be specifically introduced below with examples.

[0043] Please refer to Figure 2 , Figure 2 , which is a schematic flowchart of a communication method provided by the embodiments of the present application. As Figure 2 illustrated by way of example, a communication method may include:

[0044] 201. The second-mode base station sends the second-mode frequency band channel parameters to the first-mode base station.

[0045] Among them, the second-mode base station may, for example, use the uplink pilot signal sent by the user equipment (such as through the second-mode frequency band uplink channel) to perform channel estimation, and then obtain the second-mode frequency band channel parameters.

[0046] Among them, the second-mode base station may, for example, send the second-mode frequency band channel parameters to the first-mode base station through the Secondary Node Modification signaling of the Xn interface. That is, the second-mode frequency band channel parameters may be carried in the Secondary Node Modification signaling sent by the second-mode base station to the first-mode base station.

[0047] 202. The first-mode base station receives the second-mode frequency band channel parameters from the second-mode base station; the first-mode base station calculates the cross-frequency band channel measurement auxiliary parameters using the second-mode frequency band channel parameters from the second-mode base station.

[0048] 203. The first-mode base station sends the calculated cross-frequency band channel measurement auxiliary parameters to the user equipment.

[0049] In some possible implementation manners, before the first-mode base station sends the cross-band channel measurement assistance parameters to the user equipment, it further includes: determining that the correlation between the first-mode band channel and the second-mode band channel satisfies a preset condition based on the first-mode band channel parameters and the second-mode band channel parameters from the second-mode base station (the preset condition may include, for example, that the correlation between the first-mode band channel and the second-mode band channel is greater than or equal to a threshold). Of course, the first-mode base station may also determine that the correlation between the first-mode band channel and the second-mode band channel satisfies the preset condition in other ways. In addition, the first-mode base station may even default that the correlation between the first-mode band channel and the second-mode band channel satisfies the preset condition, and directly send the calculated cross-band channel measurement assistance parameters to the user equipment. That is, before the first-mode base station sends the calculated cross-band channel measurement assistance parameters to the user equipment, it does not perform the confirmation operation on whether the correlation between the first-mode band channel and the second-mode band channel satisfies the preset condition.

[0050] 204. The user equipment receives the cross-band channel measurement assistance parameters sent by the first-mode base station. The user equipment refers to the cross-band channel measurement assistance parameters and sends an uplink sparse pilot signal (the uplink pilot signal is, for example, an uplink sparse pilot signal) to the first-mode base station. The uplink sparse pilot signal is used to obtain the first-mode band channel parameters through channel estimation.

[0051] 205. The first-mode base station receives the uplink sparse pilot signal sent by the user equipment with reference to the cross-band channel measurement assistance parameters. The first-mode base station uses the uplink sparse pilot signal and the cross-band channel measurement assistance parameters to perform channel estimation to obtain the first-mode band channel parameters.

[0052] In some possible implementation manners, the first-mode base station may further receive a cross-band channel assistance measurement capability indication sent by the second-mode base station or the user equipment. The cross-band channel assistance measurement capability indication is used to indicate that the user equipment has the cross-band channel assistance measurement capability.

[0053] It can be understood that the first-mode base station can learn that the user equipment has the cross-band channel assistance measurement capability based on the received cross-band channel assistance measurement capability indication. Of course, the first-mode base station may also learn whether the user equipment has the cross-band channel assistance measurement capability in other ways.

[0054] In addition, if the user equipment default has the cross-band channel assistance measurement capability, the step of the second-mode base station or the user equipment sending the cross-band channel assistance measurement capability indication to the first-mode base station may also be omitted.

[0055] In some possible embodiments, the first - mode base station may further receive at least one of the following parameters for calculating cross - band channel measurement auxiliary parameters sent by the second - mode base station or the user equipment: the second - mode frequency band, the array element position parameters of the second - mode frequency band, the first - mode frequency band, and the array element position parameters of the first - mode frequency band.

[0056] In some possible embodiments, the first - mode base station may be a 6G base station, and the second - mode base station may be a 5G base station. Of course, the first - mode base station and the second - mode base station may also be base stations of other different - mode communication systems.

[0057] It can be seen that in the solution of the embodiment of the present application, based on the channel correlation between the frequency bands used by different modes, the second - mode frequency - band channel parameters are used to obtain cross - band channel measurement auxiliary parameters, thereby assisting the first - mode base station in reducing the channel - measurement - related overhead, which is beneficial to improving the capacity and experience of the first - mode system.

[0058] See Figure 3 , Figure 3 which is a schematic flowchart of another communication method provided by the embodiment of the present application. As Figure 3 illustrated by way of example, another communication method may include:

[0059] 301. The first - mode base station sends a cross - band channel measurement auxiliary instruction to the user equipment, and the cross - band channel measurement auxiliary instruction is used to instruct the user equipment to calculate cross - band channel measurement auxiliary parameters.

[0060] In some possible embodiments, before the first - mode base station sends a cross - band channel measurement auxiliary instruction to the user equipment, it further includes: determining that the correlation between the first - mode frequency - band channel and the second - mode frequency - band channel satisfies a preset condition based on the first - mode frequency - band channel parameters and the second - mode frequency - band channel parameters from the second - mode base station (the preset condition may include, for example, that the correlation between the first - mode frequency - band channel and the second - mode frequency - band channel is greater than or equal to a threshold). Of course, the first - mode base station may also determine that the correlation between the first - mode frequency - band channel and the second - mode frequency - band channel satisfies the preset condition in other ways. In addition, the first - mode base station may even default that the correlation between the first - mode frequency - band channel and the second - mode frequency - band channel satisfies the preset condition and directly send the calculated cross - band channel measurement auxiliary parameters to the user equipment. That is, before the first - mode base station sends the calculated cross - band channel measurement auxiliary parameters to the user equipment, it does not perform the confirmation operation on whether the correlation between the first - mode frequency - band channel and the second - mode frequency - band channel satisfies the preset condition.

[0061] In some possible embodiments, the first-mode base station may also receive a cross-frequency channel assisted measurement capability indication sent by the second-mode base station or the user equipment, where the cross-frequency channel assisted measurement capability indication is used to indicate that the user equipment has the cross-band channel assisted measurement capability.

[0062] It can be understood that the first-mode base station can learn that the user equipment has the cross-band channel assisted measurement capability based on the received cross-frequency channel assisted measurement capability indication. Of course, the first-mode base station may also learn whether the user equipment has the cross-band channel assisted measurement capability through other means.

[0063] In addition, if the user equipment defaultly has the cross-band channel assisted measurement capability, the step of the second-mode base station or the user equipment sending the cross-frequency channel assisted measurement capability indication to the first-mode base station can also be omitted.

[0064] 302. The user equipment receives a cross-band channel measurement assistance instruction from the first-mode base station, and the user equipment also receives a downlink pilot signal sent by the second-mode base station.

[0065] 303. The user equipment uses the downlink pilot signal to perform channel estimation to obtain second-mode band channel parameters.

[0066] 304. The user equipment uses the second-mode band channel parameters to calculate cross-band channel measurement assistance parameters.

[0067] 305. The user equipment sends the cross-band channel measurement assistance parameters to the first-mode base station, and sends an uplink sparse pilot signal (the uplink pilot signal is, for example, an uplink sparse pilot signal) to the first-mode base station with reference to the cross-band channel measurement assistance parameters.

[0068] 306. The first-mode base station receives the uplink sparse pilot signal and the cross-band channel measurement assistance parameters sent by the user equipment, and the first-mode base station uses the uplink sparse pilot signal and the cross-band channel measurement assistance parameters to perform channel estimation to obtain first-mode band channel parameters.

[0069] In some possible embodiments, the first-mode base station may be a 6G base station, and the second-mode base station may be a 5G base station. Of course, the first-mode base station and the second-mode base station may also be base stations of other different communication systems.

[0070] It can be seen that in the solution of the embodiment of the present application, based on the channel correlation between the frequency bands used by different modes, the cross-band channel measurement assistance parameters are obtained by using the second-mode band channel parameters, thereby assisting the first-mode base station to reduce the channel measurement related overhead, which is beneficial to improving the capacity and experience of the first-mode system.

[0071] The following takes the first - type base station as a 6G base station and the second - type base station as a 5G base station as an example for description. The scenarios where the first - type base station and the first - type base station are base stations in other different - type systems can be analogized accordingly.

[0072] See Figure 4 , Figure 4 which is a schematic flowchart of another communication method provided by an embodiment of this application. As Figure 4 illustrated by way of example, another communication method may include:

[0073] 401. The 6G base station sends a UE capability reporting request message to the 5G base station.

[0074] 402. After receiving the UE capability reporting request message from the 6G base station, the 5G base station forwards the UE capability reporting request message to the UE.

[0075] 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.

[0076] Among them, the UE capability reporting request response message carries an inter - frequency channel auxiliary measurement capability indication, and the inter - frequency channel auxiliary measurement capability indication is used to indicate whether the UE has the inter - frequency band channel auxiliary measurement capability. The 6G base station can learn whether the UE has the inter - frequency band channel auxiliary measurement capability based on the received inter - frequency channel auxiliary measurement capability indication.

[0077] In some possible implementation manners, the UE capability reporting request message may also carry at least one of the following parameters for calculating the inter - frequency band channel measurement auxiliary parameters: 5G frequency band, array element position parameters of the 5G frequency band, 6G frequency band, array element position parameters of the 6G frequency band.

[0078] In some possible implementation manners, the 6G base station can learn the UE's capabilities (including the UE's inter - frequency band channel auxiliary measurement capabilities, etc.) by means of, for example, the SgNB addition request process or other interaction processes.

[0079] In addition, a Radio Resource Control (RRC) connection can also be established between the 6G base station and the UE, and the UE can report the UE capabilities to the 6G base station through the RRC connection. In this case, it is not necessary for the 5G base station to forward the messages related to UE capability reporting that are exchanged between the 6G base station and the UE.

[0080] 404. The UE sends an uplink low - frequency non - sparse pilot signal SRS to the 5G base station through the 5G frequency band uplink channel low .

[0081] 405. The 5G base station receives the uplink low-frequency non-sparse pilot signal SRS from the UE low and uses the uplink low-frequency non-sparse pilot signal SRS low to perform channel estimation to obtain the 5G band uplink channel parameter H_Low.

[0082] 406. The UE sends the uplink high-frequency non-sparse pilot signal SRS to the 6G base station through the 6G band uplink channel high .

[0083] 407. The 6G base station receives the uplink high-frequency pilot signal SRS from the UE high and uses the uplink high-frequency non-sparse pilot signal SRS high to perform channel estimation to obtain the 6G band (uplink / downlink) channel parameter H_high.

[0084] 408. The 6G base station requests the 5G band (uplink / downlink) channel parameter H_Low obtained by channel estimation from the 5G base station.

[0085] 409. The 5G base station sends the 5G band (uplink / downlink) channel parameter H_Low obtained by channel estimation to the 6G base station.

[0086] In some possible implementation manners, the 5G base station may send the 5G band uplink channel parameter to the 6G base station, for example, through the Secondary Node Modification signaling of the Xn interface. That is, the 5G band uplink channel parameter may be carried in the Secondary Node Modification signaling sent by the 5G base station to the 6G base station.

[0087] 410. The 6G base station calculates the correlation between the 6G band channel and the 5G band channel using the 6G band (uplink / downlink) channel parameter H_high and the 5G band (uplink / downlink) channel parameter H_Low from the 5G base station.

[0088] 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 calculates the cross-band channel measurement auxiliary parameter using the 5G band (uplink / downlink) channel parameter H_Low from the 5G base station.

[0089] In some possible implementation manners, at least one of the following parameters may also be used to calculate the cross-band channel measurement auxiliary parameter: 5G band, array element position parameter of the 5G band, 6G band, array element position parameter of the 6G band.

[0090] 412. The 6G base station sends the calculated cross-band channel measurement auxiliary parameter to the UE.

[0091] 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.

[0092] 414. The 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 for channel estimation to obtain updated 6G band channel parameters H_high (such as 6G band uplink / downlink channel parameters, etc.).

[0093] It can be seen that in the solution of the embodiment of the present application, based on the channel correlation between the frequency bands used by 5G and 6G, the 5G band channel parameters are used to obtain the cross-band channel measurement auxiliary parameters, thereby assisting the 6G base station to reduce the channel measurement related overhead, which is beneficial to improving the capacity and experience of the 6G system.

[0094] See Figure 5 , Figure 5 which is a schematic flow diagram of another communication method provided by the embodiment of the present application. As Figure 5 illustrated by way of example, another communication method may include:

[0095] 501. The 6G base station sends a UE capability reporting request message to the 5G base station.

[0096] 502. After receiving the UE capability reporting request message from the 6G base station, the 5G base station forwards the UE capability reporting request message to the UE.

[0097] 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.

[0098] Among them, the UE capability reporting request response message carries a cross-frequency channel auxiliary measurement capability indication, and the cross-frequency channel auxiliary measurement capability indication is used to indicate whether the UE has the cross-band channel auxiliary measurement capability. The 6G base station can learn whether the UE has the cross-band channel auxiliary measurement capability based on the received cross-frequency channel auxiliary measurement capability indication.

[0099] In some possible implementation manners, the UE capability reporting request message may further carry at least one of the following parameters for calculating the cross-band channel measurement auxiliary parameters: 5G band, array element position parameters of the 5G band, 6G band, array element position parameters of the 6G band.

[0100] In some possible implementation manners, the 6G base station can learn about the UE's capabilities (including the UE's cross-band channel assisted measurement capabilities, etc.) by means of, for example, the SgNB addition request process or other interaction processes.

[0101] In addition, a Radio Resource Control (RRC) connection can also 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, it is not necessary for the 5G base station to forward the messages related to the UE capability reporting that are exchanged between the 6G base station and the UE.

[0102] 504. The UE sends an uplink low-frequency non-sparse pilot signal SRS to the 5G base station through the 5G band uplink channel. low 。

[0103] 505. The 5G base station receives the uplink low-frequency non-sparse pilot signal SRS from the UE, and uses the uplink low-frequency non-sparse pilot signal SRS low to perform channel estimation to obtain the 5G band uplink channel parameter H_Low. low

[0104] 506. The UE sends an uplink high-frequency non-sparse pilot signal SRS to the 6G base station through the 6G band uplink channel. high 。

[0105] 507. The 6G base station receives the uplink high-frequency pilot signal SRS from the UE and uses the uplink high-frequency non-sparse pilot signal SRS high to perform channel estimation to obtain the 6G band uplink channel parameter H_high. high

[0106] 508. The 6G base station requests the 5G base station for the 5G band uplink channel parameter H_Low obtained by its channel estimation.

[0107] 509. The 5G base station sends the 5G band uplink channel parameter H_Low obtained by channel estimation to the 6G base station.

[0108] In some possible implementation manners, the 5G base station can send the 5G band uplink channel parameter to the 6G base station through, for example, the Secondary NodeModification signaling of the Xn interface. That is, the 5G band uplink channel parameter can be carried in the Secondary Node Modification signaling sent by the 5G base station to the 6G base station.

[0109] The 6G base station calculates the correlation between the 6G-band channel and the 5G-band channel using the 6G-band (uplink / downlink) channel parameter H_high and the 5G-band (uplink / downlink) channel parameter H_Low from the 5G base station.

[0110] 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 assistance instruction to the UE.

[0111] 512. The UE receives the cross-band channel measurement assistance 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 。

[0112] 513. The UE uses the 5G downlink low-frequency pilot signal CSI-RS low to perform channel estimation to obtain the 5G-band (uplink / downlink) channel parameter H_Low.

[0113] 514. The UE calculates the cross-band channel measurement assistance parameter using the estimated 5G-band (uplink / downlink) channel parameter H_Low.

[0114] In some possible implementation manners, at least one of the following parameters may also be used to calculate the cross-band channel measurement assistance parameter: 5G band, array element position parameter of 5G band, 6G band, array element position parameter of 6G band.

[0115] 515. The UE sends the cross-band channel measurement assistance parameter to the 6G base station, and sends the uplink sparse pilot signal SRS to the 6G base station with reference to the cross-band channel measurement assistance parameter low 。

[0116] 516. The 6G base station receives the uplink sparse pilot signal and the cross-band channel measurement assistance parameter sent by the UE, and the 6G base station uses the uplink sparse pilot signal and the cross-band channel measurement assistance parameter for channel estimation to obtain the updated 6G-band channel parameter H_high (such as 6G-band uplink / downlink channel parameter, etc.).

[0117] It can be seen that in the solution of the embodiment of the present application, based on the channel correlation between the frequency bands used by 5G and 6G, the 5G-band channel parameter is used to obtain the cross-band channel measurement assistance parameter, thereby assisting the 6G base station to reduce the channel measurement-related overhead, which is beneficial to improving the capacity and experience of the 6G system.

[0118] The following gives an example of a second-mode band channel parameter h that can be used l (such as the 5G-band channel parameter), the second-mode band (such as the 5G band), and the array element position parameter C of the second-mode band l(For example, the element position parameters in the 5G frequency band), calculate the possible implementation methods of the cross-band channel measurement auxiliary parameter V.

[0119] Among them, the channel parameter h of the second radio access technology frequency band l can be expressed as The channel consists of K paths, and g k represents the complex gain of the k-th path, and θ k is the angle of arrival / departure of the k-th path, and a(θ k ) represents the array steering vector of the k-th path.

[0120] Furthermore, h l can be expressed in matrix form as h l = Ag l , where A = [a(θ1), …, a(θ K )]. Among them, A represents the set of array steering vectors corresponding to the second radio access technology frequency band (or the array steering vector matrix).

[0121] Among them, perform Jacobi-Anger approximation decomposition on the set of array steering vectors A to decompose the set of array steering vectors A into the product of the element position parameter C l and the cross-band channel measurement auxiliary parameter V.

[0122] First, for an element [a(θ k )] in the array steering vector a(θ k ) n can be decomposed as follows:

[0123]

[0124] Among them, which contains the element position parameter.

[0125] Among them, which contains the channel path cluster parameter.

[0126] Among them,

[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 represents the element position parameter of the second radio access technology frequency band.

[0128] Even further, the set of array steering vectors A can be expressed as A = C lV, where V = [v(θ1),..., v(θ K )] represents the cross-band channel auxiliary measurement parameters.

[0129] Therefore, the second-mode band channel parameter h l can be further expressed as h l = Ag l = C l Vg l . Since h l and C l are known, the cross-band channel measurement auxiliary parameter V can be obtained.

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

[0131] First, calculate the equivalent channel of the second-mode band channel

[0132] After that, calculate the covariance matrix of the equivalent channel

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

[0134] It should be noted that the above method for 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 adopted, and no further examples will be given here.

[0135] Referring to Figure 6 , the embodiment of the present application also provides a communication device 600, which may include:

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

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

[0138] The embodiment of the present application also provides a computer-readable storage medium, and the computer-readable storage medium stores a computer program. The computer program is executed by hardware (such as a processor, etc.) to implement part or all of the steps of any method executed 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. When the computer program product runs on a computer device, it causes the computer device to execute some 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 implemented using software, 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 processes or functions described in the embodiments of the present application are generated in whole or in part. Among them, the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that the computer can access or a data storage device such as a server or data center that includes one or more integrated available media. The available medium may be a magnetic medium (such as a floppy disk, hard disk, or magnetic tape), an optical medium (such as an optical disc), or a semiconductor medium (such as a solid-state drive), etc. In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0141] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0142] In several embodiments provided by the present application, it should be understood that the disclosed device 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 only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the indirect coupling or direct coupling or communication connection shown or discussed between each other may be through some interfaces. The indirect coupling or communication connection of the device or unit may be in an electrical or other form.

[0143] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0144] In each embodiment of the present application, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware, or it can also be implemented in the form of a software functional unit.

[0145] Among them, 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 such an understanding, the essence of the technical solution of the present application, or the part that contributes to the prior art, or all or part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (such as a personal computer, a server or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium can include, for example: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or optical discs that can store program codes.

Claims

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

2. The method according to claim 1, wherein The method further includes: the first-mode base station receives a cross-band channel auxiliary measurement capability indication sent by the second-mode base station or the user equipment, and the cross-band channel auxiliary measurement capability indication is used to indicate that the user equipment has cross-band channel auxiliary measurement capability.

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

4. The method according to any one of claims 1 to 3, characterized in that, Before the first-mode base station sends the cross-band channel measurement auxiliary parameters to the user equipment, it further includes: determining that the correlation between the first-mode band channel and the second-mode band channel satisfies a preset condition based on the first-mode band channel parameters and the second-mode band channel parameters from the second-mode base station.

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

6. A communication method, characterized in that, Including: The user equipment receives the cross-band channel measurement auxiliary parameters sent by the first-mode base station, and the cross-band channel measurement auxiliary parameters are calculated using the second-mode band channel parameters; The user equipment sends an uplink pilot signal to the first-mode base station with reference to the cross-band channel measurement auxiliary parameters, and the uplink pilot signal is used for channel estimation to obtain first-mode band channel parameters.

7. The method according to claim 6, wherein Before the user equipment receives the cross-band channel measurement auxiliary parameters sent by the first-mode base station, it further includes: the user equipment sends a cross-band channel auxiliary measurement capability indication to the first-mode base station, and the cross-band channel auxiliary measurement capability indication is used to indicate that the user equipment has cross-band channel auxiliary measurement capability.

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

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

10. A communication method, characterized in that, Including: The first-mode base station sends a cross-band channel measurement auxiliary instruction to the user equipment, and the cross-band channel measurement auxiliary instruction is used to instruct the user equipment to calculate cross-band channel measurement auxiliary parameters; The first-mode base station receives the uplink pilot signal and the cross-band channel measurement auxiliary parameters sent by the user equipment; The first - mode base station uses the uplink pilot signal and the cross - band channel measurement assistance parameter to perform channel estimation, thereby obtaining the channel parameters of the first - mode frequency band.

11. The method according to claim 10, wherein The method further includes: the first - mode base station receives a cross - frequency channel assistance measurement capability indication sent by the second - mode base station or the user equipment, and the cross - frequency channel assistance measurement capability indication is used to indicate that the user equipment has the cross - band channel assistance measurement capability.

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

13. The method according to claim 12, wherein The first - mode base station is a 6G base station, and the second - mode base station is a 5G base station.

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

15. According to the method described in claim 14, wherein, Before the user equipment receives the cross - band channel measurement assistance instruction sent by the first - mode base station, it further includes: the user equipment sends a cross - frequency channel assistance measurement capability indication to the first - mode base station, and the cross - frequency channel assistance measurement capability indication is used to indicate that the user equipment has the cross - band channel assistance measurement capability.

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

17. A communication device, characterized in that, It includes: A processor and a memory that are coupled to each other; The processor is used to call the program stored in the memory to implement the method described in 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 runs on a computer, the computer is caused to execute the method described in any one of claims 1 to 16.

20. A computer program product, characterized in that, The computer program product includes a computer program, and when the computer program runs on a computer, the computer is caused to execute the method described in any one of claims 1 to 16.

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