Precoding information determination method and apparatus, and related device

Abstract

The present application relates to the technical field of communications, and discloses a precoding information determination method and apparatus, and a related device. The precoding information determination method in embodiments of the present application comprises: a network side device sends first configuration information to at least one terminal, the first configuration information being used for configuring M pieces of first information for the at least one terminal, and the first information including at least one of the following: angle information, delay information, and Doppler shift information, wherein the M pieces of first information and N reference signal resources are used for determining precoding information, and both M and N are positive integers.

Description

Method, apparatus and related device for determining precoding information

[0001] The present application claims priority to the Chinese patent application No. 202411236706.8, filed on September 4, 2024, and entitled "Method, apparatus and related device for determining precoding information", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application belongs to the field of communication technology, and specifically relates to a method, apparatus and related device for determining precoding information. BACKGROUND

[0003] Currently, in a communication and sensing integrated system, a network side device can respectively send different configurations to a terminal for sensing function (hereinafter referred to as a sensing terminal) and a terminal for communication function (hereinafter referred to as a communication terminal), so that the sensing terminal and the communication terminal can measure a plurality of reference signal resources based on different configurations and different rules to determine different precoding information, and then respectively report the different precoding information to the network side device, so that the network side device can determine different precoding matrices based on the different precoding information.

[0004] However, since the sensing terminal and the communication terminal measure the plurality of reference signal resources based on different configurations and different rules, the precoding information determined by the sensing terminal can be different from the precoding information determined by the communication terminal, for example, the analog beams in the precoding information determined by the sensing terminal are different from the analog beams in the precoding information determined by the communication terminal. Therefore, after the network side device determines different precoding matrices based on the different precoding information, the beams used by the network side device for sensing with the sensing terminal are different from the beams used by the network side device for communicating with the communication terminal, which can cause waste of beam resources. SUMMARY

[0005] Embodiments of the present application provide a method, apparatus and related device for determining precoding information, which can solve the problem of waste of beam resources.

[0006] In a first aspect, a method for determining precoding information is provided, which is executed by a network side device, and the method comprises: the network side device sends first configuration information to at least one terminal, the first configuration information is used to configure M first information for the at least one terminal, the first information comprises at least one of the following: angle information, time delay information, Doppler shift information; wherein the M first information and N reference signal resources are used to determine precoding information, and M and N are both positive integers.

[0007] In some embodiments of the present application, each reference signal resource is associated with at least one of the M first information.

[0008] In some embodiments of the present application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0009] In some embodiments of the present application, the pre-coding information determination method provided by the embodiments of the present application further includes: the network-side device sends at least one second configuration information to the at least one terminal, the second configuration information being used for configuring the at least one terminal to report the pre-coding information; and the network-side device receives the at least one pre-coding information from the at least one terminal.

[0010] In some embodiments of the present application, the N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0011] In a second aspect, a pre-coding information determination method is provided, which is executed by a first terminal and includes: the first terminal receives first configuration information from a network-side device, the first configuration information being used for configuring M first information for at least one terminal, the at least one terminal including the first terminal, the first terminal being at least used for a sensing function, and the first information including at least one of the following: angle information, time delay information, and Doppler frequency shift information; and the first terminal determines pre-coding information based on the M first information and N reference signal resources; wherein M and N are positive integers.

[0012] In some embodiments of the present application, each reference signal resource is associated with at least one of the M first information.

[0013] In some embodiments of the present application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0014] In some embodiments of the present application, the pre-coding information determination method provided by the embodiments of the present application further includes: the first terminal receives at least one second configuration information from the network-side device, the second configuration information being used for configuring the at least one terminal to report the pre-coding information; and the first terminal sends the pre-coding information to the network-side device.

[0015] In some embodiments of the present application, the N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0016] In a third aspect, a method for determining precoding information is provided, which is performed by a second terminal and includes: receiving, by the second terminal, first configuration information from a network device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the second terminal, the second terminal being used only for a communication function, and the first information including at least one of: angle information, time delay information, and Doppler shift information; and determining, by the second terminal, precoding information based on the M first information and N reference signal resources, where M and N are positive integers.

[0017] In some embodiments of the present application, each reference signal resource is associated with at least one of the M first information.

[0018] In some embodiments of the present application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0019] In some embodiments of the present application, the method for determining precoding information further includes: receiving, by the second terminal, at least one second configuration information from the network device, the second configuration information being used to configure the at least one terminal to report the precoding information; and sending, by the second terminal, the precoding information to the network device.

[0020] In some embodiments of the present application, the N reference signal resources are associated with the at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0021] In a fourth aspect, a device for determining precoding information is provided, which includes a sending module. The sending module is configured to send first configuration information to at least one terminal, the first configuration information being used to configure M first information for the at least one terminal, and the first information including at least one of: angle information, time delay information, and Doppler shift information; and the M first information and N reference signal resources being used to determine precoding information, where M and N are positive integers.

[0022] In some embodiments of the present application, each reference signal resource is associated with at least one of the M first information.

[0023] In some embodiments of the present application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0024] In some embodiments of the present application, the sending module is further configured to send at least one second configuration information to the at least one terminal, the second configuration information being used for configuring the at least one terminal to report the precoding information. The precoding information determination apparatus provided in the embodiments of the present application further comprises a receiving module. The receiving module is configured to receive the at least one precoding information from the at least one terminal.

[0025] In some embodiments of the present application, the N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0026] In a fifth aspect, a precoding information determination apparatus is provided, which comprises a receiving module and a processing module. The receiving module is configured to receive first configuration information from a network side device, the first configuration information being used for configuring M first information for at least one terminal, the precoding information determination apparatus being included in the at least one terminal and being used at least for sensing function, and the first information comprising at least one of the following: angle information, time delay information and Doppler shift information. The processing module is configured to determine precoding information based on the M first information configured by the first configuration information received by the receiving module and N reference signal resources, wherein M and N are positive integers.

[0027] In some embodiments of the present application, each reference signal resource is associated with at least one of the M first information.

[0028] In some embodiments of the present application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0029] In some embodiments of the present application, the receiving module is further configured to receive at least one second configuration information from the network side device, the second configuration information being used for configuring the at least one terminal to report the precoding information. The precoding information determination apparatus provided in the embodiments of the present application further comprises a sending module. The sending module is configured to send the precoding information to the network side device.

[0030] In some embodiments of the present application, the N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0031] In a sixth aspect, a pre-coding information determination apparatus is provided, which comprises a receiving module and a processing module. The receiving module is configured to receive first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal comprising the pre-coding information determination apparatus, the pre-coding information determination apparatus being used only for communication function, and the first information comprising at least one of the following: angle information, time delay information, and Doppler shift information. The processing module is configured to determine pre-coding information based on the M first information configured by the first configuration information and N reference signal resources, M and N being positive integers.

[0032] In some embodiments of the present application, each reference signal resource is associated with at least one of the M first information.

[0033] In some embodiments of the present application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0034] In some embodiments of the present application, the receiving module is further configured to receive at least one second configuration information from the network side device, the second configuration information being used to configure the at least one terminal to report the pre-coding information. The pre-coding information determination apparatus provided in the embodiments of the present application further comprises a sending module. The sending module is configured to send the pre-coding information to the network side device.

[0035] In some embodiments of the present application, the N reference signal resources are associated with the at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0036] In a seventh aspect, a pre-coding information determination apparatus is provided, which is configured to perform the steps of the method according to the first aspect, or implement the steps of the method according to the second aspect, or implement the steps of the method according to the third aspect.

[0037] In an eighth aspect, a network side device is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions being executed by the processor to implement the steps of the method according to the first aspect.

[0038] In a ninth aspect, a network side device is provided, which comprises a processor and a communication interface, and the communication interface is configured to send first configuration information to at least one terminal, the first configuration information being used to configure M first information for the at least one terminal, the first information comprising at least one of the following: angle information, time delay information, and Doppler shift information, and the M first information and N reference signal resources being used to determine pre-coding information, M and N being positive integers.

[0039] In a tenth aspect, a terminal is provided, which comprises a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect.

[0040] In an eleventh aspect, a terminal is provided, which comprises a processor and a communication interface, wherein, in the case that the terminal is a first terminal, the communication interface is configured to receive first configuration information from a network-side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal comprising the first terminal, the first terminal being used at least for sensing function, the first information comprising at least one of the following: angle information, time delay information, Doppler shift information, and the processor is configured to determine precoding information based on the M first information and N reference signal resources, wherein M and N are positive integers. In the case that the terminal is a second terminal, the communication interface is configured to receive first configuration information from a network-side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal comprising the second terminal, the second terminal being used only for communication function, the first information comprising at least one of the following: angle information, time delay information, Doppler shift information, and the processor is configured to determine precoding information based on the M first information and N reference signal resources, wherein M and N are positive integers.

[0041] In a twelfth aspect, a readable storage medium is provided, the readable storage medium storing programs or instructions, the programs or instructions being executed by a processor to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect.

[0042] In a thirteenth aspect, a wireless communication system is provided, which comprises a first terminal, a second terminal and a network-side device, the first terminal being configured to implement the steps of the method according to the second aspect, the second terminal being configured to implement the steps of the method according to the third aspect, and the network-side device being configured to implement the steps of the method according to the first aspect.

[0043] In a fourteenth aspect, a chip is provided, which comprises a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to run programs or instructions to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect.

[0044] In a fifteenth aspect, a computer program / program product is provided, which is stored in a storage medium, and which is executed by at least one processor to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect.

[0045] In the embodiments of the present application, the network side device can send first configuration information for configuring M first information for at least one terminal to the at least one terminal, the first information comprising at least one of angle information, time delay information, and Doppler shift information, so that the at least one terminal can determine precoding information based on the M first information and N reference signal resources; M and N are both positive integers. Since the network side device can send the same first configuration information to the at least one terminal, the at least one terminal can determine precoding information based on the same M first information (i.e., at least one of angle information, time delay information, and Doppler shift information) and N reference signal resources, so that the probability of the same analog beams in the precoding information determined by the at least one terminal can be improved, and then the network side device uses the same analog beams when determining the precoding matrix for the at least one terminal, which means that the network side device can serve multiple terminals simultaneously for sensing and / or communication under the same beam, so that the utilization rate of beam resources can be improved.

[0046] In the embodiments of the present application, the first terminal can receive first configuration information for configuring M first information for at least one terminal from a network side device, the at least one terminal including the first terminal, the first terminal being used at least for sensing function, the first information comprising at least one of angle information, time delay information, and Doppler shift information; and determine precoding information based on the M first information and N reference signal resources; wherein M and N are both positive integers. Since the first configuration information received by the first terminal is the same as the first configuration information received by other terminals in the at least one terminal, the at least one terminal can determine precoding information based on the same M first information (i.e., at least one of angle information, time delay information, and Doppler shift information) and N reference signal resources, so that the probability of the same analog beams in the precoding information determined by the first terminal and the precoding information determined by other terminals can be improved, and then the network side device can use the same analog beams when determining the precoding matrix for the at least one terminal after the at least one terminal reports the determined precoding information to the network side device, so that the network side device can use the same analog beams for the first terminal for sensing service, and the same analog beams for other terminals for communication or sensing service, so that the utilization rate of beam resources can be improved.

[0047] In the embodiment of the present application, the second terminal can receive first configuration information for configuring M first information for at least one terminal from the network side device, the at least one terminal including the second terminal, the second terminal being used only for communication function, the first information including at least one of the following: angle information, time delay information, and Doppler shift information; and determine the precoding information based on the M first information and N reference signal resources; wherein M and N are positive integers. Since the first configuration information received by the second terminal is the same as the first configuration information received by other terminals in the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (i.e. at least one of the angle information, the time delay information, and the Doppler shift information) and the N reference signal resources, so that the probability that the analog beams in the precoding information determined by the second terminal are the same as the analog beams in the precoding information determined by other terminals can be improved, so that after the at least one terminal reports the determined precoding information to the network side device, the network side device can use the same analog beams when determining the precoding matrix for the at least one terminal, and thus the analog beams used by the network side device for the communication service of the second terminal can be the same as the analog beams used by the network side device for the communication service or sensing service of other terminals, so that the utilization rate of beam resources can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0048] FIG. 1 is a schematic diagram of a sensing link in a communication and sensing integrated system in the related art;

[0049] FIG. 2A is a schematic diagram of a sub-connected HBF architecture;

[0050] FIG. 2B is a schematic diagram of a fully-connected HBF architecture;

[0051] FIG. 3 is a block diagram of a wireless communication system according to an embodiment of the present application;

[0052] FIG. 4 is a flowchart of a method for determining precoding information according to an embodiment of the present application;

[0053] FIG. 5 is a schematic diagram of transmission of reference signal resources in a resource set in a method for determining precoding information according to an embodiment of the present application;

[0054] FIG. 6 is a schematic diagram of transmission of reference signal resources in a resource set in a method for determining precoding information according to an embodiment of the present application;

[0055] FIG. 7 is a flowchart of a method for determining precoding information according to an embodiment of the present application;

[0056] FIG. 8 is a flowchart of a method for determining precoding information according to an embodiment of the present application;

[0057] FIG. 9A is an information schematic diagram of the first information in the precoding information determination method according to an embodiment of the present application;

[0058] FIG. 9B is another information schematic diagram of the first information in the precoding information determination method according to an embodiment of the present application;

[0059] FIG. 10 is a flow schematic diagram of the precoding information determination method according to an embodiment of the present application;

[0060] FIG. 11 is a flow schematic diagram of the precoding information determination method according to an embodiment of the present application;

[0061] FIG. 12 is a flow schematic diagram of the precoding information determination method according to an embodiment of the present application;

[0062] FIG. 13 is a structure schematic diagram of the precoding information determination apparatus according to an embodiment of the present application;

[0063] FIG. 14 is another structure schematic diagram of the precoding information determination apparatus according to an embodiment of the present application;

[0064] FIG. 15 is a structure schematic diagram of the precoding information determination apparatus according to an embodiment of the present application;

[0065] FIG. 16 is a hardware structure schematic diagram of the communication device according to an embodiment of the present application;

[0066] FIG. 17 is a hardware structure schematic diagram of the terminal according to an embodiment of the present application;

[0067] FIG. 18 is a hardware structure schematic diagram of the network side device according to an embodiment of the present application;

[0068] FIG. 19 is another hardware structure schematic diagram of the network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0070] The professional terms involved in the embodiments of the present application will be described below.

[0071] 1. Communication and perception integration

[0072] Future mobile communication systems (e.g., Beyond Fifth-Generation (B5G) systems or 6th Generation (6G) systems) will have sensing capabilities in addition to communication capabilities. Sensing capabilities, in which one or more devices with sensing capabilities can perceive the position, distance, speed, etc. of a target object, or detect, track, identify, image, etc. a target object, event, or environment, etc. through the transmission and reception of wireless signals. In the future, with the deployment of small base stations with high-frequency large-bandwidth capabilities such as millimeter waves and terahertz in 6G networks, the resolution of sensing will be significantly improved compared to centimeter waves, thereby enabling 6G networks to provide more refined sensing services. Typical sensing functions and application scenarios are shown in Table 1:

[0073] Table 1

[0074] Communication and sensing integration, i.e., through spectrum sharing and hardware sharing in the same system, achieves integrated design of communication and sensing functions. The system can perceive position, distance, speed, etc. while transmitting information, detect, track, identify target devices or events, and the communication system and the sensing system complement each other to improve overall performance and provide better service experience.

[0075] The integration of communication and radar is a typical application of communication and sensing integration (communication and sensing fusion). In the past, radar systems and communication systems were strictly separated due to different research objects and focuses. In most scenarios, the two systems are studied independently. In fact, radar and communication systems are also typical ways of information transmission, acquisition, processing, and exchange, and there are many similarities in working principles, system architectures, and frequency bands. The design of communication and radar integration has great feasibility, mainly in the following aspects: first, both communication systems and sensing systems are based on electromagnetic wave theory and use electromagnetic wave transmission and reception to complete information acquisition and transmission; second, both communication systems and sensing systems have antennas, transmitters, receivers, signal processors, etc. in hardware resources; with the development of technology, there are more and more overlaps in working frequency bands; in addition, there are similarities in signal modulation and reception detection, waveform design, and other key technologies. The integration of communication and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, spectrum efficiency improvement, mutual interference reduction, etc., thereby improving the overall performance of the system.

[0076] According to the different perception signal sending nodes and receiving nodes, the following six kinds of perception links are divided, as shown in FIG. 1. It is worth noting that each kind of perception link in FIG. 1 takes one sending node and one receiving node as an example. In actual systems, different perception links can be selected according to different perception requirements. The sending node and the receiving node of each kind of perception link can be one or more, and the actual perception system can include multiple different perception links. The perception objects in FIG. 1 take people and vehicles as examples. The perception objects of the actual system will be more abundant.

[0077] 1) Network side device (such as base station) self-initiated self-reception perception. In this way, the base station sends the perception signal and obtains the perception result by receiving the echo of the perception signal.

[0078] 2) Inter-base station air interface perception. At this time, base station 2 receives the perception signal sent by base station 1 and obtains the perception result.

[0079] 3) Uplink air interface perception. At this time, the base station receives the perception signal sent by the terminal and obtains the perception result.

[0080] 4) Downlink air interface perception. At this time, the terminal receives the perception signal sent by the base station and obtains the perception result.

[0081] 5) Terminal self-initiated self-reception perception. At this time, the terminal sends the perception signal and obtains the perception result by receiving the echo of the perception signal.

[0082] 6) Inter-terminal sidelink perception. For example, terminal 2 receives the perception signal sent by terminal 1 and obtains the perception result.

[0083] 2, Multi-Input Multi-Output (MIMO) radar

[0084] MIMO radar utilizes Waveform Diversity and Virtual Array characteristics, which can obtain higher detection / estimation resolution, higher maximum identifiable target number, and better clutter suppression capability than Phase Array.

[0085] The principle of the MIMO radar virtual array is as follows. Consider that the total number of the transmitting array antennas of the MIMO radar is X, and the number of the receiving antennas is Y. It is assumed that the transmitting signals of each transmitting antenna are orthogonal to each other, and thus each receiving antenna can distinguish X signals. Since the phase of the response signal is determined by the positions of the transmitting antennas and the receiving antennas, X*Y response signals with different phases can be obtained, which are completely equivalent to the response signals obtained by an array with X*Y antennas. Thus, by reasonably setting the positions of the transmitting array and / or the receiving array, an array containing X*Y virtual antennas that do not overlap with each other can be constructed by using only X+Y physical antennas. Since the virtual array can often form a larger array aperture, better angle resolution can be obtained; X and Y are positive integers.

[0086] Further, by designing the pre-coding, the transmitting energy can be focused in a given angle interval, and thus the signal-to-noise ratio (SNR) of the response signal is improved, and thus the estimation performance of the perception is improved. Specifically, by designing the pre-coding matrix C, Z beams are formed for transmitting Z orthogonal signals, so that the beam energy in a given angle region is uniform, and the energy outside the given angle region is minimized; Z is a positive integer.

[0087] 3. Digital-analog hybrid pre-coding

[0088] Currently, the idle frequency bands of mobile communication networks are decreasing, and the use of frequency bands is gradually developing towards high frequencies, such as millimeter wave (mmWave) promoted by the 5th Generation (5G) New Radio (NR). These frequency bands have a large number of available resources. However, higher frequencies mean greater transmission loss, so a larger antenna array is usually used to form a larger gain beam to overcome the propagation loss and ensure system coverage. At the same time, considering factors such as hardware complexity, cost overhead, and power consumption, the digital beamforming (DBF) method used in low frequency bands cannot be used, and a hybrid beamforming (HBF) method combining analog beams and digital ports is usually used, as shown in FIGS. 2A and 2B. In the HBF architecture, each antenna has an independent radio frequency link channel, but multiple antennas share a digital link channel. For digital precoding, each antenna has an independent digital link channel. FIGS. 2A and 2B show two common HBF architectures. One is the sub-connected architecture shown in FIG. 2A, that is, the array is divided into multiple sub-arrays, and each sub-array is connected to only one digital channel. The other is the fully connected architecture shown in FIG. 2B, that is, each antenna is connected to all digital channels, and the signals of the digital channels are superimposed after the phase shifter and input to the radio frequency link channel. However, it should be pointed out that the HBF architecture is not limited to the above two architectures. In HBF, the signal sent by each antenna is generally changed in phase by a phase shifter to form an analog beam, thereby realizing analog beamforming. Due to the limitation of device capability, analog beamforming is generally performed on the entire bandwidth, and cannot realize independent beamforming for each sub-band like digital beamforming, so the analog beams are multiplexed by time division multiplexing.

[0089] For a unicast link between a network side device (such as a base station) and a terminal, only when the transmit and receive beams of the two are aligned can the corresponding communication link obtain better performance. The process of aligning the transmit and receive beams between the base station and the terminal is called beam management in the NR standard.

[0090] Generally, downlink beam alignment can be achieved through the following 3 processes:

[0091] First, coarse pairing of downlink transmission beams and reception beams: a periodic CSI-RS resource set containing multiple CSI-RSs can be configured with repetition configured as "off"; multiple CSI-RS resource sets can be configured, each with repetition configured as "on".

[0092] It should be noted that repetition "off" means that the CSI-RS in a resource set can use different transmission beams; and repetition "on" means that the CSI-RS in a resource set uses the same transmission beam.

[0093] Second, fine adjustment of downlink transmission beams on the network side: a CSI-RS resource set containing multiple CSI-RSs can be configured with repetition configured as "off" or without repetition.

[0094] Third, fine adjustment of downlink reception beams on the terminal side: a CSI-RS resource set can be configured, each with repetition configured as "on".

[0095] Further, in order to support digital-analog hybrid precoding, in the existing NR protocol, in a reporting configuration (CSI-ReportConfig), the base station can configure up to 8 CSI-RS resources for channel measurement, and these CSI-RS resources can correspond to different analog beams. The terminal selects one of them when reporting, and reports the identification number of the resource (equivalent to feeding back the direction of the analog beam) and the corresponding CSI, which includes the precoding matrix indicator (PMI), the rank indicator (RI) and the channel quality indicator (CQI). The reported CSI will be used by the network side device for subsequent data channel transmission.

[0096] While in the future, facing frequency bands such as U6G band (6425-7125 megahertz, MHz) or FR3 band (7.125 to 24.25 gigahertz, GHz), although path loss can also be overcome based on the hybrid digital-analog precoding architecture, considering that on the one hand, the road loss is not as large as the millimeter wave frequency band, and on the other hand, the array technology is developing, the number of digital channels may increase significantly, for example, from the maximum of 32 ports supported by NR now to 128 ports, and the width of the analog beam may be wider than the analog beam in the millimeter wave frequency band. In this case, the terminal may be covered by multiple analog beams. Since different analog beams can only be multiplexed in a time-division manner, if the terminal only selects one CSI-RS resource to report its identifier (CSI-RS Resource Indicator, CRI) and the corresponding CSI, the number of users that can be multiplexed under each beam will be reduced, thereby affecting the system performance. The following is an example to illustrate this: terminal 1 can be covered by analog beam 1 and analog beam 2, where analog beam 1 is optimal for terminal 1, and terminal 2 can be covered by analog beam 2 and analog beam 3, where analog beam 2 is optimal for terminal 2. If reported according to the existing protocol, the analog beam in the precoding information reported by terminal 1 is analog beam 1, and the analog beam in the precoding information reported by terminal 2 is analog beam 2. For the network side device, the two cannot be spatially multiplexed.

[0097] 4. Other terms

[0098] The terms "first", "second", and the like in this application are used to distinguish similar objects, not to describe a particular order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described here, and the objects distinguished by "first", "second" are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "or" in this application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0099] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). The direct indication can be understood as that the sender explicitly informs the receiver of specific information, operations to be performed or requested results, etc. in the sent indication. The indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operations to be performed or the requested results according to the judgment result.

[0100] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, and also in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than the NR system, such as a 6th Generation (6G) communication system. th

[0101] ​FIG. 3 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palmtop computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothes, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0102] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0103] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices jointly, and the embodiments of the present application do not make a specific limitation in this regard. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0104] The precoding information determination method, apparatus and related device provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings and some embodiments and application scenarios thereof.

[0105] Currently, in a communication and sensing integrated system, a sensing process also needs a suitable sensing analog beam and sensing digital precoding. In the related art, a network side device can send different configurations to a terminal (hereinafter referred to as a sensing terminal) for a sensing function and a terminal (hereinafter referred to as a communication terminal) for a communication function respectively, so that the sensing terminal and the communication terminal can measure a plurality of reference signal resources based on different configurations and different rules to determine different precoding information, and then report the different precoding information to the network side device respectively, so that the network side device can determine different precoding matrices based on the different precoding information. However, since the sensing terminal and the communication terminal measure the plurality of reference signal resources based on different configurations and different rules, the precoding information determined by the sensing terminal can be different from the precoding information determined by the communication terminal, for example, the analog beam in the precoding information determined by the sensing terminal is different from the analog beam in the precoding information determined by the communication terminal. However, in a future system, the analog beam can be wide, and the terminal can be covered by multiple beams. In the above method, the analog beam in the precoding information determined by the sensing terminal is different from the analog beam in the precoding information determined by the communication terminal, at this time, it can appear that the sensing terminal and the communication terminal are both covered by the analog beam 1, while the analog beam in the precoding information determined by the sensing terminal is the analog beam 2, and the analog beam in the precoding information determined by the communication terminal is the analog beam 3, that is, the sensing terminal for sensing and the communication terminal for communication cannot perform beam multiplexing, but in fact, the sensing terminal for sensing and the communication terminal for communication can perform beam multiplexing, therefore, it can cause beam resource waste.

[0106] However, in the embodiments of the present application, the network side device can send first configuration information for configuring M first information for at least one terminal to the at least one terminal, the first information including at least one of the following: angle information, time delay information, Doppler shift information, so that the at least one terminal can determine the precoding information based on the M first information and N reference signal resources; M and N are both positive integers. Since the network side device can send the same first configuration information to the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (i.e., at least one of the angle information, the time delay information, and the Doppler shift information) and the N reference signal resources, so that the probability of the precoding information determined by the at least one terminal being the same can be improved, and then the network side device uses the same analog beam when determining the precoding matrix for the at least one terminal, which means that the network side device can simultaneously serve multiple terminals for sensing and / or communication under the same beam, so that the utilization rate of the beam resources can be improved.

[0107] The execution subject of the precoding information determination method provided by the embodiments of the present application can be a precoding information determination apparatus, or a terminal, or a functional module or entity in the terminal, or a functional module or entity in the network side device. In the embodiments of the present application, the precoding information determination method is taken as an example of being executed by a terminal or a network side device to illustrate the precoding information determination method provided by the embodiments of the present application.

[0108] FIG. 4 shows a flowchart of a precoding information determination method provided by the embodiments of the present application. As shown in FIG. 4, the precoding information determination method provided by the embodiments of the present application can include the following step 101.

[0109] Step 101: The network side device sends first configuration information to at least one terminal.

[0110] In some embodiments of the present application, the network side device can be an access network device, a core network device, or the like, including at least one of the following: an access network device, a core network device. The access network device can be a base station, and the core network device can be a sensing function (SF) network element, an access and mobility management function (AMF), a sensing application server in the core network.

[0111] The sensing function network element, also known as a sensing network element or a sensing network function, can be located on the access network side or the core network side. It is a network node responsible for at least one of the following functions: sensing request processing, sensing resource scheduling, sensing information interaction, and sensing data processing. It can be an upgrade based on the AMF or LMF in the 5G network, or other network nodes or newly defined network nodes. Specifically, the function characteristics of the sensing function network element can include at least one of the following:

[0112] Information interaction with the wireless signal sending device and / or the wireless signal measuring device (including the target terminal or the serving base station of the target terminal or the base station associated with the target area), wherein the information includes sensing processing requests, sensing capabilities, sensing auxiliary data, sensing measurement type, and sensing resource configuration information, to obtain the value of the target sensing result or the sensing measurement (uplink measurement or downlink measurement) sent by the wireless signal measuring device; wherein the wireless signal can also be referred to as a sensing signal.

[0113] The sensing method is determined according to the type of sensing service, the information of the sensing service consumer, the required sensing QoS requirement information, the sensing capability of the wireless signal sending device, and the sensing capability of the wireless signal measuring device. The sensing method can include: base station A sends to base station B, or base station sends to terminal, or base station A self-sends and self-receives, or terminal sends to base station, or terminal self-sends and self-receives, or terminal A sends to terminal B, etc.

[0114] The sensing device serving the sensing service is determined according to the type of sensing service, the information of the sensing service consumer, the required sensing QoS requirement information, the sensing capability of the wireless signal sending device, and the sensing capability of the wireless signal measuring device. The sensing device includes the wireless signal sending device and / or the wireless signal measuring device.

[0115] Overall coordination and scheduling of resources required for sensing services, such as corresponding configuration of sensing resources for base stations and / or terminals;

[0116] Data processing or calculation of the value of the sensing measurement to obtain the sensing result. Further, the sensing result is verified, and the sensing accuracy is estimated.

[0117] In some embodiments of the present application, the at least one terminal can include a sensing terminal (e.g., the first terminal in the following embodiments) and a communication terminal (e.g., the second terminal in the following embodiments), wherein the sensing terminal is used for at least sensing function, and the communication terminal is used for only communication function.

[0118] In the embodiments of the present application, the first configuration information is used to configure M first information for at least one terminal, the first information includes at least one of the following: angle information, time delay information, Doppler shift information; wherein the M first information and the N reference signal resources are used to determine the precoding information, and M and N are positive integers.

[0119] In some embodiments of the present application, the first information can be referred to as sensing area information, or sensing range information, or measurement range information, or measurement area information, etc. Of course, the first information can also be referred to as other information, which is not limited in the embodiments of the present application.

[0120] In some embodiments of the present application, the angle information can be an angle value.

[0121] In some embodiments of the present application, the angle information can include at least one of the following: azimuth angle information, elevation angle information. Of course, the angle information can also include other information, which is not limited in the embodiments of the present application.

[0122] In some embodiments of the present application, the time delay information can be a time delay value or a time delay range.

[0123] It should be noted that in some embodiments, due to the timing offset of the network side device and the terminal, the time delay range is relative to the strongest time delay path or the first arrival time delay path observed by the terminal, wherein the first arrival time delay path is the first time delay path with a capability greater than a certain threshold.

[0124] In some embodiments of the present application, the Doppler shift information can be a Doppler shift amount.

[0125] In some embodiments of the present application, the reference signal resource is used to transmit a first reference signal. The first reference signal can include at least one of the following: a channel state information reference signal (Channel State Information-Reference Signal, CSI-RS), a demodulation reference signal (Demodulation Reference Signal, DMRS), a synchronization signal block (Synchronization Signal Block, SSB), and a reference signal used in a communication system, or a positioning reference signal (Positioning Reference Signal, PRS), or a reference signal specially designed for sensing function. Of course, the first reference signal can also be other reference signals, which are not limited in the embodiments of the present application.

[0126] The first reference signal can be periodic, semi-persistent or aperiodic.

[0127] In some embodiments of the present application, the N reference signal resources can be indicated by a network-side device through reference signal resource configuration; or can be indicated by a network-side device through a reporting configuration (for example, the second configuration information in the following embodiments). Wherein, the reporting configuration is used to configure the terminal to report precoding information. The reporting configuration can be CSI-ReportConfig.

[0128] In some embodiments of the present application, the N reference signal resources satisfy at least one of the following:

[0129] The N reference signal resources are periodic resources;

[0130] The N reference signal resources belong to at least two resource sets.

[0131] In some embodiments of the present application, N can be a positive integer greater than 1. It can be understood that since the measurement of Doppler needs to correspond to reference signal resources of different sending time domain positions, in order to measure the Doppler frequency shift information, N needs to be a positive integer greater than 1.

[0132] In some embodiments of the present application, in the case that the N reference signal resources are periodic resources, the reference signal resources corresponding to different sending time domain positions of the same periodic resource can be used for the measurement of Doppler; or the reference signal resources corresponding to different sending time domain positions of the same periodic resource can correspond to different downlink space domain sending filters.

[0133] In some embodiments of the present application, the resource set can include at least one of the following: resource grouping, reference signal resource burst set (Burst set). The at least two resource sets can be periodic resource sets, or semi-periodic resource sets, or semi-persistent resource sets.

[0134] Wherein, the resource grouping can be a reference signal resource set (Resource set), for example, a non-zero power channel state information reference signal resource set (NZP CSI-RS resource set), or a reference signal resource group (Group), for example, a group in the NZP CSI-RS resource set, or a reference signal resource pair (Pair).

[0135] In some embodiments of the present application, in the case that the N reference signal resources belong to at least two resource sets, the downlink spatial domain transmission filter of the reference signal resources with different time domain resources in the same resource set is the same.

[0136] In the same resource set, the reference signal resources can be used for Doppler measurement.

[0137] For example, assuming that the resource set is a resource group, in the case that the N reference signal resources belong to at least two resource groups, the reference signal resources in the same resource group can be used for Doppler measurement.

[0138] For another example, assuming that the resource set is a reference signal resource burst set, in the case that the N reference signal resources belong to at least two reference signal resource burst sets, the reference signal resources in the same reference signal resource burst set can be used for Doppler measurement.

[0139] Therefore, the terminal can perform Doppler measurement according to the reference signal resources in each resource set to obtain accurate measurement results, so that accurate precoding information can be obtained according to the measurement results.

[0140] In some embodiments of the present application, in the case that the N reference signal resources belong to at least two resource sets, the reference signal resources with the same first sequence number in different resource sets of the at least two resource sets can be used for Doppler measurement. The first sequence number can be a relative sequence number or a transmission sequence number, and the relative sequence number can be understood as the sequence number in the resource set.

[0141] For example, assuming that the resource set is a resource group, in the case that the N reference signal resources belong to at least two resource groups, the reference signal resources with the same relative sequence number (i.e., the sequence number in each resource group is the same, for example, the second reference signal resource in different resource groups) can be used for Doppler measurement.

[0142] For another example, assuming that the resource set is a reference signal resource burst set, in the case that the N reference signal resources belong to at least two reference signal resource burst sets, the reference signal resources with the same transmission sequence number in different reference signal resource burst sets can be used for Doppler measurement.

[0143] For example, if the at least two reference signal resource burst sets include reference signal resource burst set 1 and reference signal resource burst set 2, as shown in FIG. 5, the reference signal resource corresponding to the second transmission time domain position in the reference signal resource burst set 1 and the reference signal resource corresponding to the second transmission time domain position in the reference signal resource burst set 2 can be used for Doppler measurement. It should be noted that one square in FIG. 5 represents one transmission time domain position.

[0144] In some embodiments of the present application, in the case where the N reference signal resources belong to at least two resource sets, for any one resource set, the reference signal resources corresponding to different transmission time domain positions are included in the any one resource set.

[0145] In an example, the reference signal resources corresponding to different transmission time domain positions in the any one resource set can be uniformly distributed in the time domain. In this case, the network side device can configure the number of reference signal resources in the any one resource set and the transmission time domain position interval between adjacent reference signal resources to achieve the configuration of the any one resource set.

[0146] For example, assuming that the N reference signal resources belong to at least two reference signal burst sets, for any one reference signal burst set, the reference signal resources corresponding to different transmission time domain positions are included in the any one reference signal burst set, for example, reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4, as shown in FIG. 6, the reference signal resource 1 corresponds to the first time unit, the reference signal resource 2 corresponds to the fourth time unit, the reference signal resource 3 corresponds to the seventh time unit, and the reference signal resource 4 corresponds to the tenth time unit, i.e., the reference signal resource 1, the reference signal resource 2, the reference signal resource 3, and the reference signal resource 4 can be uniformly distributed in the time domain. It should be noted that one square in FIG. 6 represents one time unit, which can be any one of a symbol, a slot, a subframe, a frame, or a plurality of symbols, a plurality of slots, etc.

[0147] In another example, the reference signal resources corresponding to different transmission time domain positions in the any one resource set can be non-uniformly distributed in the time domain. In this case, the network side device can indicate the transmission time domain position corresponding to each reference signal resource by a bitmap, each bit of the bitmap representing a transmitted time unit, which can be a symbol, a plurality of symbols, a slot, a plurality of slots, a frame, etc.

[0148] Optionally, if each bit of the bitmap represents a time unit of transmission containing multiple symbols, the time domain position of transmission within a time unit corresponding to each reference signal resource can be indicated by the network side device or agreed by the protocol or determined by default, for example, the time domain position of transmission corresponding to each reference signal resource can be the first symbol within each time unit. It should be noted that the above time domain position of transmission can contain multiple symbols.

[0149] As can be seen, since the specific conditions required to be met by the N reference signal resources are specified in the embodiments of the present application, the terminal can determine the suitable N reference signal resources from the M reference signal resources associated with the first information, and thus the terminal can accurately determine the precoding information.

[0150] In some embodiments of the present application, in the case where the second information includes Doppler shift information, the Doppler measurement related parameter corresponding to the second information satisfies at least one of the following:

[0151] is related to the resource configuration information of the reference signal resource in the first resource set;

[0152] is related to the resource configuration information of the reference signal resource with the same first sequence number in the at least two first resource sets.

[0153] In the embodiments of the present application, the above-mentioned second information is any one of the M first information; and the first resource set is the resource set associated with the second information.

[0154] It can be understood that the second information is associated with at least one first resource set, and the Doppler measurement related parameter corresponding to the second information can be related to the resource configuration information of the reference signal resource in any one of the at least one first resource set.

[0155] In some embodiments of the present application, the first sequence number can be a relative sequence number or a transmission sequence number, and the relative sequence number can be understood as a sequence number in the resource set.

[0156] In some embodiments of the present application, the above-mentioned Doppler measurement related parameter can include at least one of the following: minimum resolvable Doppler shift, maximum Doppler shift. Of course, the Doppler measurement related parameter can also include other parameters, and the embodiments of the present application do not limit this.

[0157] In some embodiments of the present application, the above-mentioned resource configuration information can include at least one of the following: maximum time interval of the time domain position of transmission corresponding to the reference signal resource, minimum time interval of the time domain position of transmission corresponding to the reference signal resource.

[0158] Exemplarily, assuming the resource set is a resource group, the minimum resolvable Doppler shift corresponding to the second information can be related to a maximum time interval of transmission time domain positions corresponding to reference signal resources in the resource group to which the first reference signal resource belongs. Alternatively, the maximum resolvable Doppler shift corresponding to the second information can be related to a minimum time interval of transmission time domain positions corresponding to reference signal resources in the resource group to which the first reference signal resource belongs.

[0159] Exemplarily, assuming the resource set is a reference signal resource burst set, the minimum resolvable Doppler shift corresponding to the second information can be related to a maximum time interval of transmission time domain positions corresponding to reference signal resources in the reference signal resource burst set to which the first reference signal resource belongs. Alternatively, the maximum resolvable Doppler shift corresponding to the second information can be related to a minimum time interval of transmission time domain positions corresponding to reference signal resources in the reference signal resource burst set to which the first reference signal resource belongs.

[0160] Exemplarily, assuming the resource set is a resource group, the minimum resolvable Doppler shift corresponding to the second information can be related to a maximum time interval of transmission time domain positions corresponding to a plurality of reference signal resources (i.e., reference signal resources with the same first sequence number as the first reference signal resource in at least two resource groups). Alternatively, the maximum resolvable Doppler shift corresponding to the second information can be related to a minimum time interval of transmission time domain positions corresponding to a plurality of reference signal resources (i.e., reference signal resources with the same first sequence number as the first reference signal resource in at least two resource groups).

[0161] Exemplarily, assuming the resource set is a reference signal resource burst set, the minimum resolvable Doppler shift corresponding to the second information can be related to a maximum time interval of transmission time domain positions corresponding to a plurality of reference signal resources (i.e., reference signal resources with the same first sequence number as the first reference signal resource in at least two reference signal resource bursts). Alternatively, the maximum resolvable Doppler shift corresponding to the second information can be related to a minimum time interval of transmission time domain positions corresponding to a plurality of reference signal resources (i.e., reference signal resources with the same first sequence number as the first reference signal resource in at least two reference signal resource bursts).

[0162] The above first sequence number can be a relative sequence number or a transmission sequence number, which can be understood as a sequence number in the resource set.

[0163] Thus, it can be known that, since the application embodiment specifies the condition required to be met by the Doppler measurement related parameter corresponding to the second information in the case that the second information comprises Doppler shift information, the terminal can accurately determine the Doppler measurement related parameter based on the condition, accurately perform Doppler measurement on the second information based on the Doppler measurement related parameter, and thus obtain accurate measurement results, and further obtain accurate precoding information according to the measurement results.

[0164] In some embodiments of the application, the M first information is associated with the N reference signal resources.

[0165] In some embodiments of the application, the N reference signal resources and the M first information can be directly associated or indirectly associated.

[0166] In some embodiments of the application, each of the N reference signal resources is associated with at least one of the M first information.

[0167] In some examples, each reference signal resource can be directly or indirectly associated with at least one of the M first information.

[0168] Thus, it can be known that, since the application embodiment specifies the association manner between each reference signal and the M first information, the terminal can accurately determine the N reference signal resources associated with the M first information based on the association manner, and accurately determine the precoding information based on the M first information and the N reference signal resources.

[0169] In some embodiments of the application, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0170] Among them, the reference signal resources in one resource set can be indirectly associated with the first information associated with one resource set.

[0171] In some examples, for each resource set in the at least two resource sets, there is no intersection among the reference signal resources in one set. For example, resource set 1 is {resource 1, resource 2}, and resource set 2 is {resource 3, resource 4}.

[0172] In another example, for each resource set in the at least two resource sets, there is no intersection among the reference signal resources in one set. For example, resource set 1 is {resource 1, resource 2}, and resource set 2 is {resource 2, resource 3}.

[0173] Therefore, the terminal can accurately determine the N reference signal resources associated with the M first information based on the association manner, and accurately measure the N reference signal resources.

[0174] In some embodiments of the present application, the N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0175] The reference signal resources associated with one second configuration information are indirectly associated with the first information associated with one configuration information.

[0176] The second configuration information can be understood as the reporting configuration.

[0177] In some examples, all reference signal resources associated with one second configuration information are used for measurement of the first information associated with the one second configuration information.

[0178] Therefore, the terminal can accurately determine the N reference signal resources associated with the M first information based on the association manner, and accurately measure the N reference signal resources.

[0179] In some embodiments of the present application, for each of the M first information, the one first information can include a plurality of sub-information, and for at least one reference signal resource or at least one resource set (i.e. reference signal resource set) or second configuration information associated with the one first information, only one of the plurality of sub-information can be associated. Each of the sub-information indicates part of the angle information, part of the time delay information or part of the Doppler shift information indicated by the first information. For example, the first information indicates angle information and time delay information, and the sub-information can indicate part of the angle information, or part of the time delay information, or part of the angle information and part of the time delay information. It should be understood that the indication of part of the information also includes the indication of all the information.

[0180] In some embodiments of the present application, for each of the M first information, the association manner of different first information associated with reference signal resources or resource sets or second configuration information can be different.

[0181] In some embodiments of the present application, the configuration of the above-mentioned association relationship can be embodied by an identifier containing the first information, for example, the identifier containing the first information is included in the reporting configuration, the reference signal resource configuration, or the resource set configuration; and for the case where one first information contains multiple sub-information, each sub-information can have an identifier, and one first information can associate multiple sub-information by containing the identifiers of the multiple sub-information. Meanwhile, the above-mentioned reporting configuration, the reference signal resource configuration, or the resource set configuration, etc. can associate the sub-information by containing the identifiers of the sub-information.

[0182] In some embodiments of the present application, after the at least one terminal receives the first configuration information, each terminal can determine the precoding information based on the M first information and the N reference signal resources. It can be understood that, since each terminal determines the precoding information based on the same configuration, the probability that the analog beams in the precoding information determined by the at least one terminal are the same can be improved.

[0183] The embodiments of the present application provide a precoding information determination method. A network side device can send, to at least one terminal, first configuration information for configuring M first information for the at least one terminal, the first information including at least one of angle information, time delay information, and Doppler frequency shift information, so that the at least one terminal can determine precoding information based on the M first information and N reference signal resources; M and N are both positive integers. Since the network side device can send the same first configuration information to the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (i.e., at least one of the angle information, the time delay information, and the Doppler frequency shift information) and the N reference signal resources, and thus the probability that the analog beams in the precoding information determined by the at least one terminal are the same can be improved. Furthermore, the network side device uses the same analog beams when determining the precoding matrix for the at least one terminal, which means that the network side device can simultaneously serve multiple terminals for sensing and / or communication under the same beam, and thus the utilization rate of the beam resources can be improved.

[0184] In some embodiments of the present application, in combination with FIG. 4, as shown in FIG. 7, the precoding information determination method provided by the embodiments of the present application can further include the following steps 201 and 202.

[0185] Step 201: The network side device sends at least one second configuration information to the at least one terminal.

[0186] It should be noted that the present embodiment does not limit the execution order of step 101 and step 201. In one example, the terminal can execute step 101 first and then execute step 201, which is shown in Figure 7. In another example, the terminal can execute step 201 first and then execute step 101. In yet another example, the terminal can execute step 101 and step 201 at the same time, for example, the network side device can send the first configuration information and the at least one second configuration information to the at least one terminal at the same time through the same signaling.

[0187] In the present embodiment, the second configuration information is used to configure the at least one terminal to report the precoding information.

[0188] Step 202, the network side device receives at least one precoding information from the at least one terminal.

[0189] In some embodiments of the present application, after the network side device receives at least one precoding information from the at least one terminal, the network side device can determine a precoding matrix according to each precoding information, and use each precoding matrix for precoding when performing sensing or communication with each terminal, so as to improve the sensing performance or the communication performance.

[0190] In some embodiments of the present application, the network side device can receive one precoding information from the sensing terminal (for example, the first terminal in the following embodiment), determine a precoding matrix based on the one precoding information, and use the one precoding matrix for precoding when performing sensing with the sensing terminal, so as to improve the sensing performance.

[0191] In some embodiments of the present application, the network side device can receive one precoding information from the communication terminal (for example, the second terminal in the following embodiment), determine a precoding matrix based on the one precoding information, and use the one precoding matrix for precoding when performing communication with the sensing terminal, so as to improve the communication performance.

[0192] Therefore, the network side device can determine a precoding matrix according to the precoding information determined by each terminal, and use the determined precoding matrix for precoding when performing sensing or communication with each terminal, so as to improve the sensing performance or the communication performance.

[0193] In some embodiments of the present application, the at least one terminal includes a first terminal, and the first terminal is used for at least sensing function; the precoding information from the first terminal includes at least one of the following:

[0194] at least one first identifier;

[0195] first digital precoding information;

[0196] a first precoding matrix indicator (PMI).

[0197] In some embodiments of the present application, the first terminal can be used for sensing function, or can be used for both sensing function and communication function. Of course, the first terminal can also be used for both sensing function and other functions, and the embodiments of the present application do not limit this.

[0198] In some embodiments of the present application, the precoding information from the first terminal can be at least part of the precoding information corresponding to the first target information of the M first information. Wherein, the first target information can include at least one first information.

[0199] In the embodiments of the present application, the first identifier includes at least one of the following: an identifier ID of the reference signal resource determined by the first terminal, an identifier ID of the resource set determined by the first terminal.

[0200] In some embodiments of the present application, each first identifier corresponds to one sensing analog beam. It can be understood that each first identifier is an identifier of the reference signal resource associated with a sensing analog beam determined or selected by the first terminal, or each first identifier is an identifier of the resource set to which the reference signal resource associated with a sensing analog beam determined or selected by the first terminal belongs.

[0201] Wherein, the number of first identifiers corresponding to different first information in the first target information can be the same or different.

[0202] In some embodiments of the present application, the first identifiers corresponding to different first information in the first target information can have an intersection, or can have no intersection.

[0203] In the embodiments of the present application, the first digital precoding information includes at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier, digital precoding information corresponding to the resource set indicated by the first identifier.

[0204] In some embodiments of the present application, the first digital precoding information can be used for sensing function, or can be used for both sensing and communication functions.

[0205] In some embodiments of the present application, in the case that the precoding information from the first terminal does not include at least one first identifier and includes first digital precoding information, the first identifier can be preconfigured or defaulted, so that the first terminal can report the first digital precoding information based on the first identifier.

[0206] In some embodiments of the present application, the first digital precoding information can be a precoding matrix, and the precoding information for sensing can be part of the precoding matrix. For example, the precoding matrix has 4 layers, and the precoding information for sensing can be the first 2 layers. How to select the precoding information will be described below. For a certain first information in the first target information, the first digital precoding information can be determined by solving the following optimization problem:

[0207] where W represents the precoding matrix, W1 represents a set of selectable precoding matrices, R(W) represents the communication rate under the precoding matrix W, W n represents the nth column in W, i.e., the nth precoding vector, I(W n ) represents the sensing performance index under the precoding vector W n , and λ > 0 represents the trade-off between the communication rate and the sensing performance.

[0208] In some embodiments of the present application, the first digital precoding information indicates at least one of the following:

[0209] at least one first spatial domain vector;

[0210] at least one first spatial domain beam information;

[0211] at least one first port selection information;

[0212] at least one first precoding codebook.

[0213] In some embodiments of the present application, the first spatial domain vector can be a two-dimensional DFT vector or an oversampled two-dimensional DFT (degenerating into a one-dimensional DFT vector or an oversampled one-dimensional DFT for a linear array); or can be a two-dimensional DFT vector or an oversampled two-dimensional DFT vector b (degenerating into a one-dimensional DFT vector or an oversampled one-dimensional DFT for a linear array) shared by two polarization directions, and then superimposed with a polarization-to-polarization phase φ, i.e., can be represented as

[0214] In the embodiments of the present application, the first spatial domain beam information includes a linear combination of at least one spatial domain basis vector.

[0215] where the spatial domain basis vector can be a two-dimensional DFT vector or an oversampled two-dimensional DFT vector, or has the form of the above a vector of forms, or a port selection vector, when a certain spatial domain basis vector (for example, a DFT vector is indicated by an index of the DFT vector, or a port selection vector is indicated by a selected port) and a linear superposition coefficient (which can be indicated by a phase and an amplitude) need to be reported.

[0216] In the embodiments of the present application, the first port selection information is used to indicate the port of the reference signal selected by the first terminal.

[0217] In the embodiments of the present application, the first precoding codebook includes at least one precoding vector.

[0218] The at least one first precoding codebook can be indicated by an existing codebook type or a future codebook type for communication. The codebook type can include at least one of the following: Type-I, Type-II, and eType-II.

[0219] As can be seen, since the specific content of the first digital precoding information is specified in the embodiments of the present application, the first terminal can accurately determine the first digital precoding information according to the specific content, and thus the first terminal can report the precoding information required by the network side device to the network side device.

[0220] In some embodiments of the present application, each first PMI can correspond to at least one first identifier or be calculated based on at least one first identifier. It can be understood that each first PMI can correspond to at least one perceived analog beam. The first PMI corresponding to different first identifiers or perceived analog beams can be reported to the network side device after being compressed, for example, the PMI is compressed.

[0221] As can be seen, since the specific content required by the precoding information reported by the first terminal is specified in the embodiments of the present application, the first terminal can accurately report the precoding information required by the network side device based on the specific content, and thus the network side device can accurately determine the precoding matrix used for perception based on the precoding information.

[0222] In some embodiments of the present application, the network side device can first determine the analog precoding corresponding to the precoding information of the first terminal after the precoding information of the first terminal. Meanwhile, the digital weight under the analog precoding is determined according to the perceived digital precoding information (i.e., the first digital precoding information) reported by the first terminal. Wherein, N t is the number of antennas of the network side device, N pK is the number of digital channels of the network side device, K is determined according to the number of sensing targets that need to be perceived, for example. Then the precoding matrix of the network side device can be expressed as W A W D where W A can be realized by a phase shifter network, W D can be realized at the baseband.

[0223] It can be understood that the network side device can obtain the appropriate sensing analog beam and the corresponding sensing digital precoding, and the PMI for communication corresponding to the appropriate sensing analog beam, through the precoding information from the first terminal. Thus, the network side device can determine the appropriate precoding matrix for sensing and the precoding for communication, both of which share the same analog beam, and through the above two precoding matrices, frequency division multiplexing of sensing and communication is realized.

[0224] In some embodiments of the present application, the at least one terminal includes a first terminal, which is used at least for sensing. In some examples, after step 101, the precoding information determination method provided by the embodiments of the present application can further include the following step 102.

[0225] Step 102, the network side device receives first measurement information from the first terminal.

[0226] In the embodiments of the present application, the first measurement information includes at least one of the following:

[0227] indication information of whether the sensing target is detected;

[0228] the number of measured sensing targets;

[0229] parameter estimation results of the detected sensing target;

[0230] spectrum information.

[0231] In some embodiments of the present application, the reference estimation result includes at least one of the following: time delay information, Doppler information, angle information, distance information, speed information, and position coordinate information.

[0232] In some embodiments of the present application, the spectrum information includes at least one of the following: time delay spectrum information, distance spectrum information, Doppler spectrum information, speed spectrum information, and angle (including azimuth and / or elevation) spectrum information; or, the spectrum information includes joint spectrum information of at least two of the time delay / distance, Doppler / speed, and angle, such as time delay-Doppler spectrum information, or time delay-Doppler-angle spectrum information.

[0233] Thus, the network-side device can receive the first measurement information sent by the first terminal, and obtain the information related to the sensing target through the first measurement information, so that the network-side device can accurately determine the precoding matrix for sensing based on the first measurement information.

[0234] In some embodiments of the present application, the at least one terminal includes a second terminal, and the second terminal is only used for communication function; the precoding information from the second terminal includes at least one of the following:

[0235] at least one second identifier;

[0236] a second PMI.

[0237] In some embodiments of the present application, the precoding information from the second terminal can be at least part of the precoding information corresponding to the second target information in the M first information. The second target information can include at least one first information.

[0238] In the embodiments of the present application, the second identifier includes at least one of the following: an identifier of a reference signal resource determined by the second terminal, and an identifier of a resource set determined by the second terminal.

[0239] In some embodiments of the present application, each second identifier corresponds to one sensing analog beam. It can be understood that each second identifier can be an identifier of a reference signal resource associated with a sensing analog beam selected by the second terminal, or each second identifier can be an identifier of a resource set to which a reference signal resource associated with a sensing analog beam selected by the second terminal belongs.

[0240] In some embodiments of the present application, the number of second identifiers corresponding to different first information in the second target information can be the same or different.

[0241] In some embodiments of the present application, the second identifiers corresponding to different first information in the second target information can have an intersection, or can have no intersection.

[0242] In some embodiments of the present application, each second PMI can correspond to at least one second identifier, or be calculated based on at least one second identifier. It can be understood that each second PMI can correspond to at least one sensing analog beam. The second PMI corresponding to different sensing analog beams or second identifiers can be reported to the network-side device after compression, for example, the second PMI is compressed.

[0243] Therefore, the network side device can accurately determine the precoding matrix used for communication based on the precoding information.

[0244] FIG. 8 shows a flowchart of a precoding information determination method provided by an embodiment of the present application. As shown in FIG. 8, the precoding information determination method provided by an embodiment of the present application can include the following steps 301 and 302.

[0245] Step 301: The first terminal receives first configuration information from the network side device.

[0246] In the embodiment of the present application, the first terminal is at least used for sensing function.

[0247] In some embodiments of the present application, the first terminal can be used for sensing function, or can be used for both sensing function and communication function.

[0248] In the embodiment of the present application, the first configuration information is used to configure M first information for at least one terminal, the at least one terminal including the first terminal, and the first information including at least one of the following: angle information, time delay information, and Doppler frequency shift information.

[0249] It should be noted that the description of the first configuration information and the M first information can refer to the specific description in the above embodiments, which will not be repeated here.

[0250] Step 302: The first terminal determines the precoding information based on the M first information and N reference signal resources.

[0251] In the embodiment of the present application, M and N are both positive integers.

[0252] In some embodiments of the present application, the first terminal can first perform channel estimation on the N reference signal resources, and then perform filtering processing on the result of the channel estimation based on the M first information to determine the precoding information; or the first terminal can first perform filtering processing on the first reference signal of the N reference signal resources based on the M first information, and then perform measurement on the filtered first reference signal to determine the precoding information.

[0253] For example, a first information is used to indicate angle information and time delay information. As shown in FIG. 9A, the square with a shaded area in FIG. 9A indicates the response found at the corresponding angle information and time delay information, and the dashed box represents a first information (including an angle information and a time delay information) configured by the network-side device, and then the first terminal can perform filtering processing based on the angle information and the time delay information. As shown in FIG. 9B, after the filtering processing, the first terminal can obtain the response located in the angle information and the time delay information.

[0254] In the embodiments of the present application, there can be a response from the wireless channel propagation environment itself outside the sensing area. As shown in FIG. 9A and FIG. 9B, if M first information (one of the M first information is taken as an example for illustration in FIG. 9A and FIG. 9B) is not configured, the environmental component will affect the measurement and calculation of the precoding information of the first terminal, for example, if the environmental component is relatively high, the precoding information calculated by the first terminal will be more biased towards the environmental component rather than the sensing target. The M first information in the embodiments of the present application has the beneficial effect of making the calculation of the precoding information of the first terminal more accurate, as described above.

[0255] The embodiments of the present application provide a precoding information determination method, a first terminal can receive first configuration information for configuring M first information for at least one terminal from a network-side device, the at least one terminal includes the first terminal, the first terminal is used for at least sensing function, and the first information includes at least one of the following: angle information, time delay information, and Doppler shift information; and based on the M first information and N reference signal resources, determine the precoding information; wherein M and N are positive integers. Since the first configuration information received by the first terminal is the same as the first configuration information received by other terminals in the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (i.e. at least one of the angle information, the time delay information, and the Doppler shift information) and the N reference signal resources, so that the probability that the analog beams in the precoding information determined by the first terminal are the same as the analog beams in the precoding information determined by other terminals can be improved, and thus, after the at least one terminal reports the determined precoding information to the network-side device, the network-side device can use the same analog beams when determining the precoding matrix for the at least one terminal, and then the analog beams used by the network-side device for the sensing service of the first terminal can be the same as the analog beams used by the network-side device for the communication or sensing service of other terminals, so that the utilization rate of beam resources can be improved.

[0256] In some embodiments of the present application, in combination with FIG. 8, as shown in FIG. 10, the precoding information determination method provided by the embodiments of the present application can further include the following steps 401 and 402.

[0257] Step 401: The first terminal receives at least one second configuration information from the network side device.

[0258] It should be noted that the present embodiment does not limit the order of performing step 401 and step 301 for the first terminal. In one example, the first terminal can perform step 301 first and then perform step 401, and FIG. 10 illustrates the execution order. In another example, the first terminal can perform step 401 first and then perform step 301. In yet another example, the first terminal can perform step 401 at the same time of performing step 301, for example, the first terminal can receive one signaling carrying the first configuration information and the at least one second configuration information.

[0259] In the present embodiment, the second configuration information is used to configure at least one terminal to report precoding information.

[0260] Step 402: The first terminal sends the precoding information to the network side device.

[0261] Therefore, the network side device can determine the precoding matrix used for sensing according to the precoding information determined by the first terminal, so as to use the precoding matrix for precoding when sensing with the first terminal, and thus the sensing performance of sensing can be improved.

[0262] In some embodiments of the present application, the precoding information includes at least one of the following:

[0263] at least one first identifier;

[0264] first digital precoding information;

[0265] first PMI.

[0266] In the present embodiment, the first identifier includes at least one of the following: an identifier of a reference signal resource determined by the first terminal, and an identifier of a resource set determined by the first terminal. The first digital precoding information includes at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier, and digital precoding information corresponding to the resource set indicated by the first identifier.

[0267] It should be noted that the description of the at least one first identifier, the first digital precoding information, and the first PMI can refer to the specific description in the above embodiments, which will not be repeated here.

[0268] Thus, since the embodiments of this application specify the specific content to be included in the precoding information reported by the first terminal, the first terminal can accurately report the precoding information required by the network-side device based on the specific content. Therefore, the network-side device can accurately determine the precoding matrix used for sensing based on the precoding information.

[0269] In some embodiments of this application, the aforementioned at least one first identifier includes at least one of the following: an identifier of a second reference signal resource; an identifier of a second resource set; wherein the second reference signal resource is: at least one reference signal resource that satisfies a predefined sensing requirement among reference signal resources associated with at least a portion of the first information in M ​​first information; and the second resource set is the resource set to which the second reference signal resource belongs.

[0270] Specifically, the at least part of the first information may be the aforementioned first target information. The first target information may include at least one piece of first information, each piece of first information corresponding to at least one reference signal resource in the second reference signal resources.

[0271] For the m-th piece of first information in the first target information, the first terminal can determine the number N of at least one reference signal resource or at least one resource set (e.g., at least one resource group or at least one resource burst set) in the second reference signal resources corresponding to the m-th piece of first information. m Among them, N m This can be explicitly or implicitly indicated by the network-side device or specified by the protocol, or N m The maximum and / or minimum values ​​are indicated by the network-side device or agreed upon by the protocol. Optionally, the number of at least one reference signal resource or at least one set of resources in the second reference signal resources corresponding to different pieces of first information in the first target information may be the same or different. m is a positive integer.

[0272] In some embodiments of this application, for the m-th first piece of information in the first target information, the first terminal may first sort the perception performance indicators of at least one first piece of information corresponding to the m-th first piece of information from high to low, and select the top N with the best perception performance indicators. m A reference signal resource or resource set, which serves as at least one reference signal resource or resource set in the second reference signal resource corresponding to the m-th first information.

[0273] It should be noted that the perception performance indicators include at least one of the following: a received power related indicator, an interference and noise power related indicator, a perception signal to interference plus noise ratio (SINR) related indicator, a perception signal to noise ratio (SNR) related indicator, a perception signal to interference ratio (SIR) related indicator, a perception reference signal receiving quality (RSRQ) related indicator, a perception measurement quantity related statistical indicator, an ambiguity function related evaluation indicator, a Cramér-Rao lower bound (CRLB), a capacity-distortion tradeoff, an equivalent-MSE, an estimation-communication rate, a Welch bound, a perception reproducible evaluation indicator, and a calculation result of any at least two of the above perception SNR, perception SINR, CRLB, etc. indicators through any at least one operation of addition, subtraction, multiplication, or division.

[0274] The received power related indicator includes a first indicator (received power of a perception target associated path): a linear average value (in W) of the received power of a path associated with a perception target (also referred to as a target path) in a channel response measured from a first signal on a resource unit carrying the first signal. The resource unit is a time domain and / or a frequency domain resource unit; the first signal can be a perception signal such as a dedicated signal for a perception service, or a communication signal such as a reference signal, a synchronization signal, etc.

[0275] The interference and noise power related indicator includes at least one of the following: a second indicator, a third indicator, and a fourth indicator.

[0276] The second index is a linear average of the power of the other paths in the channel response of the first signal on the target resource, and a linear average of the interference and noise power of other signals than the first signal on the target resource or other resources (for example, resources configured by high-layer signaling) (unit: W); the target resource can be a time-frequency domain resource unit carrying the first signal; the second index = total received power - the first index; the total received power can be represented as a linear average of the total received power (including the received power of signals of the serving cell and non-serving cells, adjacent channel interference, thermal noise, etc.) on the target resource (unit: W); or the total received power = RSSI*K1, K1 is a coefficient, and the measurement resource of the received signal strength indication (RSSI) is the target resource or other resources (for example, resources configured by high-layer signaling).

[0277] The third index is a linear average of the interference and noise power of other signals than the first signal on the target resource or other resources (for example, resources configured by high-layer signaling) (unit: W); the target resource can be a time-frequency domain resource unit carrying the first signal; the third index = total received power - first signal received power; the first signal received power is the reference signal receiving power (RSRP) of the first signal.

[0278] The fourth index is a linear average of the power of the other paths in the channel response of the first signal on the target resource (unit: W); the fourth index = RSRP of the first signal - the first index.

[0279] The SINR-related index or the SNR-related index or the SIR-related index can include at least one of the fifth index, the sixth index, the seventh index, and the eighth index. The fifth index = the first index / the second index; the sixth index = the first index / the third index; the seventh index = the first index / the fourth index.

[0280] The RSRP-related index includes the eighth index, and the eighth index = K2*the first index / total received power, K2 is a coefficient.

[0281] The statistical index of the sensing measurement quantity can be a statistical mean, standard deviation or variance of multiple measurements of the same sensing measurement quantity, or a deviation between a predicted value and an actual measured value of the sensing measurement quantity / sensing result, and a statistical mean, standard deviation or variance of the deviation.

[0282] The evaluation index of the blur function includes the normalized sidelobe level (NSL), i.e., the height of the highest sidelobe of the normalized blur function; or the ratio of the main lobe to the highest sidelobe of the blur function (or the ratio of the highest sidelobe to the main lobe); in addition, the number of normalized blur function sidelobes with a peak higher than a given threshold / total power / total energy, the main lobe width (3dB width) of the blur function, etc.

[0283] The Cramer-Rao lower bound is the lowest variance that can be achieved by all unbiased estimators, which is equal to the inverse of the Fisher information in mathematics, and is related to the perceived SNR.

[0284] The mutual information function quantitatively gives the maximum achievable rate of reliable transmission of the integrated sensing and communication system under a given distortion constraint.

[0285] The equivalent mean square error is the conversion of the spectral efficiency of communication into the equivalent radar mean square error, which can be calculated comprehensively in combination with the perceived Cramer-Rao lower bound.

[0286] The radar estimation rate is to regard the sensing channel as a kind of non-cooperative communication channel, and the mutual information between the sensing system and the target is the estimation rate.

[0287] The perception reproducible evaluation index (such as the sum of Euclidean distances between two sequences of sample points, or the regular path distance in dynamic time warping (DTW), or other indexes that can reflect the similarity of two sequences, including but not limited to: longest common subsequence (LCSS), edit distance on real sequences (EDR), edit distance with real penalty (ERP), Hausdorff distance, Frechet distance, one way distance (OWD), locality in-between polylines (LIP), etc.).

[0288] In some embodiments of the present application, after the first terminal selects at least one reference signal resource or resource set corresponding to each first information in the first target information, the first terminal can directly report the first identifier of at least one reference signal resource or resource set corresponding to each first information in the second reference signal resource to the network side device, that is, there can be the same identifier in the first identifier in the precoding information reported by the first terminal, that is, there can be intersection of at least one reference signal resource or resource set corresponding to each first information in the second reference signal resource. Alternatively, the first terminal can report the union of the first identifier of at least one reference signal resource or resource set corresponding to each first information in the second reference signal resource to the network side device, that is, there is no same identifier in the first identifier in the precoding information reported by the first terminal.

[0289] In some embodiments of the present application, after the above step 302, the precoding information determination method provided by the embodiments of the present application can further include the following step 303.

[0290] Step 303, the first terminal sends the first measurement information to the network side device.

[0291] In the embodiments of the present application, the above first measurement information includes at least one of the following:

[0292] indication information of whether the sensing target is detected;

[0293] the number of measured sensing targets;

[0294] parameter estimation result of the detected sensing target;

[0295] spectrum information.

[0296] It should be noted that the description of each information in the first measurement information can refer to the specific description in the above embodiments, which will not be repeated here.

[0297] As can be seen, since the first terminal can also send the first measurement information to the network side device to indicate each information related to the sensing target to the network side device through the first measurement information, the network side device can accurately determine the precoding matrix used for sensing based on the first measurement information.

[0298] FIG. 11 shows a flow diagram of a precoding information determination method provided by an embodiment of the present application. As shown in FIG. 11, the precoding information determination method provided by an embodiment of the present application can include the following steps 501 and 502.

[0299] Step 501, the second terminal receives the first configuration information from the network side device.

[0300] In the embodiments of the present application, the second terminal is only used for communication function.

[0301] In the embodiments of the present application, the first configuration information is used to configure M first information for at least one terminal, the at least one terminal including the second terminal, and the first information includes at least one of the following: angle information, time delay information, and Doppler shift information.

[0302] It should be noted that the description of the first configuration information and the M first information can refer to the specific description in the above embodiments, which will not be repeated here.

[0303] In step 502, the second terminal determines the precoding information based on the M first information and the N reference signal resources.

[0304] In the embodiments of the present application, M and N are both positive integers.

[0305] In some embodiments of the present application, the second terminal can measure the N reference signal resources based on the M first information to determine the precoding information.

[0306] The embodiments of the present application provide a precoding information determination method. A second terminal can receive first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the second terminal, the second terminal being only used for communication function, and the first information including at least one of the following: angle information, time delay information, and Doppler shift information; and determine precoding information based on the M first information and N reference signal resources; wherein M and N are both positive integers. Since the first configuration information received by the second terminal is the same as the first configuration information received by other terminals in the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (i.e., at least one of the angle information, the time delay information, and the Doppler shift information) and the N reference signal resources, so that the probability that the analog beams in the precoding information determined by the second terminal are the same as the analog beams in the precoding information determined by the other terminals can be improved, thereby the network side device can use the same analog beams when determining the precoding matrix for the at least one terminal after the at least one terminal reports the determined precoding information to the network side device, and thus the analog beams used by the network side device for the communication service of the second terminal can be the same as the analog beams used by the network side device for the communication service or the sensing service of the other terminals, so that the utilization rate of beam resources can be improved.

[0307] In some embodiments of the present application, as shown in FIG. 12, the precoding information determination method provided by the embodiments of the present application can further include steps 601 and 602 as follows in combination with FIG. 11.

[0308] In step 601, the second terminal receives at least one second configuration information from the network side device.

[0309] In the embodiments of the present application, the second configuration information is used to configure the at least one terminal to report the precoding information.

[0310] In step 602, the second terminal sends the precoding information to the network side device.

[0311] As can be seen, since the second terminal can send the precoding information to the network side device according to the at least one second configuration information sent by the network side device, the network side device can determine the precoding matrix used for communication according to the precoding information determined by the second terminal, so as to use the precoding matrix to perform precoding when communicating with the second terminal, and thus the communication performance of the communication can be improved.

[0312] In some embodiments of the present application, the precoding information includes at least one of the following:

[0313] at least one second identifier;

[0314] a second PMI.

[0315] In the embodiments of the present application, the second identifier includes at least one of the following: an identifier of a reference signal resource determined by the second terminal, and an identifier of a resource set determined by the second terminal.

[0316] It should be noted that the description of the at least one second identifier and the second PMI can refer to the specific description in the above embodiments, and the embodiments of the present application will not be repeated here.

[0317] As can be seen, since the embodiments of the present application specify the specific content required by the precoding information reported by the second terminal, the second terminal can accurately report the precoding information required by the network side device based on the specific content, and thus the network side device can accurately determine the precoding matrix used for communication based on the precoding information.

[0318] In some embodiments of the present application, the at least one second identifier includes at least one of the following:

[0319] an identifier of a second reference signal resource;

[0320] an identifier of a second resource set;

[0321] an identifier of a third reference signal resource

[0322] an identifier of a third resource set.

[0323] In this embodiment of the application, the second reference signal resource is: at least one reference signal resource that satisfies the predefined sensing requirements among the reference signal resources associated with at least a portion of the first information in the M first information.

[0324] Specifically, the at least part of the first information may be the aforementioned second target information. The second target information may include at least one piece of first information, each piece of first information corresponding to at least one reference signal resource in the second reference signal resources.

[0325] In one example, the second identifier only contains the identifier of the second reference signal resource. The second terminal can determine N1 second reference signal resources with the best corresponding sensing performance indicators to obtain the identifiers of the N1 second reference signal resources. Optionally, the value of N1 or the maximum value of N1 can be configured by the network-side device or agreed upon by the protocol; N1 is a positive integer.

[0326] For the nth piece of first information in the first target information, the second terminal can determine the number N of at least one reference signal resource in the second reference signal resources corresponding to the nth piece of first information. n Among them, N n This can be explicitly or implicitly indicated by the network-side device or specified by the protocol, or N n The maximum and / or minimum values ​​are indicated by the network-side device or agreed upon by the protocol. Optionally, the number of at least one reference signal resource in the second reference signal resources corresponding to different first information in the second target information may be the same or different. n is a positive integer.

[0327] In some embodiments of this application, for the nth first piece of information in the second target information, the second terminal may first sort the perception performance indicators of at least one first piece of information corresponding to the nth first piece of information from high to low performance, and select the top N with the best perception performance indicators. n A reference signal resource, which serves as at least one reference signal resource in the second reference signal resource corresponding to the nth first information.

[0328] In another embodiment, a first threshold for the sensing performance index can be set, and reference signal resources with sensing performance indices below the first threshold will not be used as reference signal resources in the second set of reference signal resources. This first threshold can be configured by the network-side device or agreed upon by a protocol.

[0329] In this embodiment of the application, the second resource set is the resource set to which the second reference signal resource belongs.

[0330] In another example, the second identifier contains only the identifier of the second resource set, and the specific determination process can refer to the case described above where the second identifier contains only the identifier of the second reference signal resource.

[0331] In the embodiments of the present application, the third reference signal resource is at least one reference signal resource meeting a predefined communication requirement among reference signal resources associated with at least part of the first information in the M first information.

[0332] The at least part of the first information can be the second target information. The second target information can include at least one first information, and each first information corresponds to at least one reference signal resource in the third reference signal resource.

[0333] In an example, the at least one second identifier includes an identifier of the second reference signal resource and an identifier of the third reference signal. At this time, the second terminal can determine the identifier of the second reference signal resource with the N2 optimal sensing performance indicators and determine the identifier of the third reference signal resource with the N3 optimal communication performance indicators; N2 and N3 are positive integers.

[0334] In case 1, the value or maximum possible value of N2 and / or the value or maximum possible value of N3 is configured by a network side device or agreed by a protocol. For example, the identifier of the second reference signal resource with the N2 optimal sensing performance indicators can be determined according to the determination method in the above embodiments; the identifier of the third reference signal resource with the N3 optimal communication performance indicators can be determined according to the order of the communication performance indicators from high to low.

[0335] It should be noted that the communication performance indicators can include at least one of the following: reference signal received power (Reference Signal Received Power, RSRP), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR), signal to noise ratio (Signal-Noise Ratio, SNR), and block error rate (Block Error Rate, BLER).

[0336] In case 2, the sum of N2 and N3 or the maximum value of the sum is configured by a network side device, and optionally, the maximum value of N2 and / or the maximum value of N3 is configured by a network side device.

[0337] For example, the second terminal can first determine one reference signal resource with the best communication performance index, and then screen the reference signal resources that can be candidates to form the first reference signal resource candidate set. The screening rule can be that the difference between the communication performance index and the communication performance index of the one reference signal is less than a second threshold value, which can be configured by the network side device or specified by the protocol. In the above-mentioned first reference signal resource candidate set, N2 second reference signal resources are determined in the best sensing performance index manner. If N2+1 is less than a preset value (the sum of N2 and N3 or the maximum value), the third reference signal resource is determined according to the best communication performance index criterion until the preset value is reached or N3 reaches the maximum value. Alternatively, when the third reference signal resource is determined according to the communication performance index, it can be determined in the above-mentioned first reference signal resource candidate set; or it can be determined in the second reference signal resource candidate set, which is determined based on a third threshold value configured by the network side device or specified by the protocol.

[0338] For example, the second terminal can first determine one reference signal resource with the best communication performance index, and then screen the reference signal resources that can be candidates to form the first reference signal resource candidate set. The screening rule can be that the difference between the communication performance index and the communication performance index of the one reference signal is less than a second threshold value, which can be configured by the network side device or specified by the protocol. In the above-mentioned first reference signal resource candidate set, N2 second reference signal resources are determined in the best sensing performance index manner. If N2+1 is less than a preset value (the sum of N2 and N3 or the maximum value), the third reference signal resource is determined according to the best communication performance index criterion until the preset value is reached or N3 reaches the maximum value. Alternatively, when the third reference signal resource is determined according to the communication performance index, it can be determined in the above-mentioned first reference signal resource candidate set; or it can be determined in the second reference signal resource candidate set, which is determined based on a third threshold value configured by the network side device or specified by the protocol.

[0339] In case 3, the sum of N2 and N3 or the maximum sum is configured by the network side device, and optionally, the maximum value of N2 is configured by the network side device. First, N2 second reference signal resources with the best sensing performance index are determined according to the above-mentioned case 1, and then N3 third reference signal resources with the best communication performance index are determined according to the best communication performance index criterion. The N3 third reference signal resources can be determined in the remaining undetermined reference signal resources or in the third reference signal resource candidate set, and finally until the total number reaches the preset value (for example, the sum of N2 and N3, or the maximum sum of N2 and N3) or there is no selected reference signal resource. The third reference signal candidate set is determined based on a fourth threshold value configured by the network side device or specified by the protocol.

[0340] For example, the second terminal can first determine one reference signal resource with the best communication performance index, and then screen the reference signal resources that can be candidates to form the first reference signal resource candidate set. The screening rule can be that the difference between the communication performance index and the communication performance index of the one reference signal is less than a second threshold value, which can be configured by the network side device or specified by the protocol. In the above-mentioned first reference signal resource candidate set, N2 second reference signal resources are determined in the best sensing performance index manner. If N2+1 is less than a preset value (the sum of N2 and N3 or the maximum value), the third reference signal resource is determined according to the best communication performance index criterion until the preset value is reached or N3 reaches the maximum value. Alternatively, when the third reference signal resource is determined according to the communication performance index, it can be determined in the above-mentioned first reference signal resource candidate set; or it can be determined in the second reference signal resource candidate set, which is determined based on a third threshold value configured by the network side device or specified by the protocol.

[0341] It can be understood that based on the above three cases, in the related art, the second terminal only determines the reference signal resource or the reference signal resource candidate set based on the criterion that the communication performance index is optimal, so the determined reference signal resource or the reference signal resource candidate set is very likely to have no intersection with the reference signal resource or the reference signal resource candidate set determined by the sensing terminal. In the embodiment, through the configuration of the network side device, when determining the reference signal resource, the second terminal also considers the related criterion of sensing, so that the analog beams in the finally determined precoding information and the sensing analog beams finally used by the network side device have a large probability of intersection, so that the communication service and the sensing service use the same analog beam, frequency division multiplexing or space division multiplexing is realized, and the utilization rate of the beam resource is improved.

[0342] In another example, the at least one second identifier includes an identifier of a second resource set and an identifier of a third resource set. At this time, the second terminal can determine an identifier of a second resource set with N4 optimal sensing performance indexes and determine an identifier of a third resource set with N5 optimal communication performance indexes; N4 and N5 are both positive integers. The value or the maximum possible value of N4 and / or the value or the maximum possible value of N5 is configured by the network side device or agreed by a protocol, or the sum or the maximum of the sum of N4 and N5 is configured by the network side device. Optionally, the maximum of N4 and / or the maximum of N5 is configured by the network side device. The specific determination process can refer to the case where the first second identifier includes the identifier of the second reference signal resource and the identifier of the third reference signal.

[0343] It should be understood that the identifier of the second reference signal resource in the first example can be replaced by the identifier of the second resource set, or the identifier of the third reference signal resource can be replaced by the identifier of the third resource set, and the related description in the above example (including the configuration method of the parameters N2 and N3 and the determination method of the second identifier) still applies, which will not be repeated here.

[0344] In the embodiment, the third resource set is a resource set to which the third reference signal resource belongs.

[0345] Therefore, the network side device can accurately determine the analog beams used for communication and sensing and the respective precoding matrices based on the precoding information and the precoding information reported by the sensing terminal.

[0346] The pre-coding information determination method provided in the embodiments of the present application can be executed by a pre-coding information determination apparatus. The pre-coding information determination apparatus provided in the embodiments of the present application is described by taking the pre-coding information determination apparatus executing the pre-coding information determination method as an example.

[0347] The pre-coding information determination apparatus provided in the embodiments of the present application can be a communication device or a component in a communication device, for example, a chip. The communication device can be a terminal, a network-side device, a server, or the like. For example, the terminal can include, but is not limited to, the types of the terminal 11 listed above, the network-side device can include, but is not limited to, the types of the network-side device 12 listed above, and the embodiments of the present application do not make specific limitations.

[0348] The pre-coding information determination apparatus includes a sending module, a receiving module, and a processing module. The receiving module, the sending module, and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor, which can include a general-purpose processor, a special-purpose processor, or the like, for example, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA), or other programmable logic devices, a gate circuit, a transistor, a discrete hardware component, or the like. The receiving module and the sending module can be implemented by a communication interface, which can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, or the like.

[0349] Specifically, referring to FIG. 13, when the pre-coding information determination apparatus is a network-side device or a component in a network-side device, the pre-coding information determination apparatus 60 includes a sending module 61.

[0350] The sending module 61 is configured to send first configuration information to at least one terminal, where the first configuration information is used to configure M first information for the at least one terminal, and the first information includes at least one of angle information, time delay information, and Doppler frequency shift information. The M first information and N reference signal resources are used to determine pre-coding information, and M and N are positive integers.

[0351] The embodiment of the present application provides a pre-coding information determination apparatus, since the pre-coding information determination apparatus can send the same first configuration information to at least one terminal, the at least one terminal can determine the pre-coding information based on the same M first information (at least one of angle information, time delay information and Doppler shift information) and N reference signal resources, so that the probability of the same analog beams in the pre-coding information determined by the at least one terminal can be improved, and then the pre-coding information determination apparatus uses the same analog beams when determining the pre-coding matrix for the at least one terminal, which means that the pre-coding information determination apparatus can simultaneously serve multiple terminals for sensing and / or communication under the same beam, so that the utilization rate of beam resources can be improved.

[0352] In a possible implementation, the N reference signal resources satisfy at least one of the following conditions: the N reference signal resources are periodic resources; and the N reference signal resources belong to at least two resource sets.

[0353] In a possible implementation, in the case where the N reference signal resources belong to at least two resource sets, the downlink spatial domain transmission filters of the reference signal resources with different time domain resources in the same resource set are the same.

[0354] In a possible implementation, each reference signal resource is associated with at least one of the M first information.

[0355] In a possible implementation, the N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

[0356] In a possible implementation, in the case where the second information includes Doppler shift information, the Doppler measurement related parameter corresponding to the second information satisfies at least one of the following conditions: related to the resource configuration information of the reference signal resource in the first resource set; related to the resource configuration information of the reference signal resource with the same first sequence number in the at least two first resource sets; wherein the second information is any one of the M first information; and the first resource set is the resource set associated with the second information.

[0357] In a possible implementation, the sending module 61 is further configured to send at least one second configuration information to the at least one terminal, and the second configuration information is used for configuring the at least one terminal to report the pre-coding information. The pre-coding information determination apparatus 60 provided in the embodiment of the present application can further include a receiving module. The receiving module is configured to receive at least one pre-coding information from the at least one terminal.

[0358] In a possible implementation, the N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

[0359] In a possible implementation, the at least one terminal includes a first terminal, and the first terminal is used at least for the sensing function; and the precoding information from the first terminal includes at least one of the following: at least one first identifier; first digital precoding information; and a first PMI; wherein the first identifier includes at least one of the following: an identifier of a reference signal resource determined by the first terminal, and an identifier of a resource set determined by the first terminal; and the first digital precoding information includes at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier, and digital precoding information corresponding to the resource set indicated by the first identifier.

[0360] In a possible implementation, the first digital precoding information indicates at least one of the following: at least one first spatial domain vector; at least one first spatial domain beam information; at least one first port selection information; and at least one first precoding codebook; wherein the first port selection information is used to indicate a port of a reference signal selected by the first terminal; the first spatial domain beam information includes a linear combination of at least one spatial domain basis vector; and the first precoding codebook includes at least one precoding vector.

[0361] In a possible implementation, the at least one terminal includes a second terminal, and the second terminal is used only for the communication function; and the precoding information from the second terminal includes at least one of the following: at least one second identifier; and a second PMI; wherein the second identifier includes at least one of the following: an identifier of a reference signal resource determined by the second terminal, and an identifier of a resource set determined by the second terminal.

[0362] In a possible implementation, the at least one terminal includes a first terminal, and the first terminal is used at least for the sensing function. The precoding information determination apparatus 60 provided in this embodiment of this application can further include a receiving module. The receiving module is configured to receive first measurement information from the first terminal, and the first measurement information includes at least one of the following: indication information about whether a sensing target is detected; a number of sensing targets measured; a parameter estimation result of a detected sensing target; and spectrum information.

[0363] Referring to FIG. 14, when the precoding information determination apparatus is a terminal or a component in a terminal, the precoding information determination apparatus 70 includes a receiving module 71 and a processing module 72.

[0364] The receiving module 71 is configured to receive first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the precoding information determining apparatus 70, the precoding information determining apparatus 70 being used for sensing function, and the first information including at least one of the following: angle information, time delay information, and Doppler shift information. The processing module 72 is configured to determine precoding information based on the M first information configured by the first configuration information received by the receiving module 71 and N reference signal resources, where M and N are positive integers.

[0365] The precoding information determining apparatus provided in the embodiments of the present application can improve the probability that the analog beams in the precoding information determined by the precoding information determining apparatus are the same as the analog beams in the precoding information determined by other terminals, so that, after the at least one terminal reports the determined precoding information to the network side device, the network side device can use the same analog beams when determining the precoding matrix for the at least one terminal, and thus the analog beams used by the network side device for the sensing service for the precoding information determining apparatus can be the same as the analog beams used by the network side device for the communication or sensing service for other terminals, thereby improving the utilization rate of beam resources.

[0366] In a possible implementation, the receiving module 71 is further configured to receive at least one second configuration information from the network side device, the second configuration information being used to configure the at least one terminal to report precoding information. The precoding information determining apparatus 70 provided in the embodiments of the present application can further include a sending module. The sending module is configured to send the precoding information to the network side device.

[0367] In a possible implementation, the precoding information includes at least one of the following: at least one first identifier; first digital precoding information; and first PMI. The first identifier includes at least one of the following: an identifier of the reference signal resource determined by the precoding information determining apparatus 70, and an identifier of the resource set determined by the precoding information determining apparatus 70. The first digital precoding information includes at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier, and digital precoding information corresponding to the resource set indicated by the first identifier.

[0368] In a possible implementation, the at least one first identifier comprises at least one of the following: an identifier of the second reference signal resource; an identifier of the second resource set; wherein the second reference signal resource is at least one reference signal resource that meets a predefined sensing requirement among reference signal resources associated with at least part of the M first information; and the second resource set is a resource set to which the second reference signal resource belongs.

[0369] In a possible implementation, the pre-coding information determination apparatus 70 provided by the embodiment of the present application can further include a sending module. The sending module is configured to send, to a network-side device, first measurement information, the first measurement information comprising at least one of the following: indication information of whether a sensing target is detected; a number of sensing targets measured; a parameter estimation result of a detected sensing target; and spectrum information.

[0370] Referring to FIG. 15, when the pre-coding information determination apparatus is a terminal or a component in a terminal, the pre-coding information determination apparatus 80 includes a receiving module 81 and a processing module 82.

[0371] The receiving module 81 is configured to receive, from a network-side device, first configuration information, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the pre-coding information determination apparatus 80, the pre-coding information determination apparatus 80 being used only for communication, and the first information comprising at least one of the following: angle information, time delay information, and Doppler frequency shift information. The processing module 82 is configured to determine pre-coding information based on the M first information configured by the first configuration information and N reference signal resources, wherein M and N are positive integers.

[0372] The pre-coding information determination apparatus provided by the embodiment of the present application can improve the probability that the analog beams in the pre-coding information determined by the pre-coding information determination apparatus are the same as the analog beams in the pre-coding information determined by other terminals, so that, after the at least one terminal reports the determined pre-coding information to the network-side device, the network-side device can use the same analog beams when determining a pre-coding matrix for the at least one terminal, and thus the analog beams used by the network-side device for communication services of the pre-coding information determination apparatus are the same as the analog beams used by the network-side device for communication services or sensing services of other terminals, which can improve the utilization rate of beam resources.

[0373] In a possible implementation, the receiving module 81 is further configured to receive at least one second configuration information from the network-side device, the second configuration information being used for configuring the at least one terminal to report the precoding information. The precoding information determination apparatus 80 provided in the embodiments of the present application can further include a sending module. The sending module is configured to send the precoding information to the network-side device.

[0374] In a possible implementation, the precoding information includes at least one of the following: at least one second identifier; and a second PMI. The second identifier includes at least one of the following: an identifier of a reference signal resource determined by the precoding information determination apparatus 80, and an identifier of a resource set determined by the precoding information determination apparatus 80.

[0375] In a possible implementation, the at least one second identifier includes at least one of the following: an identifier of a second reference signal resource; an identifier of a second resource set; an identifier of a third reference signal resource; and an identifier of a third resource set. The second reference signal resource is at least one reference signal resource, from reference signal resources associated with at least part of the M first information, that meets a predefined sensing requirement. The second resource set is a resource set to which the second reference signal resource belongs. The third reference signal resource is at least one reference signal resource, from the reference signal resources associated with at least part of the M first information, that meets a predefined communication requirement. The third resource set is a resource set to which the third reference signal resource belongs.

[0376] The precoding information determination apparatus provided in the embodiments of the present application can implement each process implemented by the method embodiments of FIGS. 4 to 12, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0377] As shown in FIG. 16, the embodiments of the present application further provide a communication device 90, which includes a processor 91 and a memory 92. The memory 92 has a program or instruction stored thereon, which can be run on the processor 91. For example, when the communication device 90 is a terminal, the program or instruction, when executed by the processor 91, implements each step of the precoding information determination method embodiments described above and can achieve the same technical effects. When the communication device 90 is a network-side device, the program or instruction, when executed by the processor 91, implements each step of the precoding information determination method embodiments described above and can achieve the same technical effects. To avoid repetition, details are not described herein.

[0378] The embodiment of the present application further provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is configured to run programs or instructions to implement the steps in the method embodiments shown in FIGS. 8 to 12. The terminal embodiment corresponds to the terminal-side method embodiments described above, and each implementation process and implementation manner of the method embodiments can be applied to the terminal embodiment, and the same technical effects can be achieved. The terminal can be the precoding information determination apparatus shown in FIGS. 14 and 15. Specifically, FIG. 17 is a schematic diagram of the hardware structure of a terminal for implementing the embodiment of the present application.

[0379] The terminal 100 includes, but is not limited to, at least part of components such as a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110.

[0380] Those skilled in the art can understand that the terminal 100 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected with the processor 110 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG. 17 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or have a different component arrangement, which will not be described here.

[0381] It should be understood that in the embodiment of the present application, the input unit 104 can include a graphic processor 1041 and a microphone 1042, and the graphic processor 1041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 106 can include a display panel 1061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 can include two parts of a touch detection device and a touch controller. The other input devices 1072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, etc., which will not be described here.

[0382] In the embodiment of the present application, the radio frequency unit 101 can transmit downlink data from a network side device to the processor 110 for processing, and can send uplink data to the network side device. Generally, the radio frequency unit 101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0383] The memory 109 can be used to store software programs or instructions and various data. The memory 109 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 109 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0384] The processor 110 can include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 110.

[0385] In the case of the terminal being the first terminal:

[0386] The radio frequency unit 101 is configured to receive first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the first terminal, the first terminal being at least used for a sensing function, and the first information including at least one of the following: angle information, time delay information, and Doppler frequency shift information.

[0387] The processor 110 is configured to determine the precoding information based on the M first information and the N reference signal resources.

[0388] M and N are positive integers.

[0389] The terminal is a first terminal. Since the first configuration information received by the first terminal is the same as the first configuration information received by other terminals in the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (at least one of angle information, time delay information, and Doppler shift information) and N reference signal resources. Therefore, the probability that the analog beams in the precoding information determined by the first terminal are the same as the analog beams in the precoding information determined by other terminals can be improved. After the at least one terminal reports the determined precoding information to the network side device, the network side device can use the same analog beams when determining the precoding matrix for the at least one terminal. Therefore, the analog beams used by the network side device for the first terminal for sensing services can be the same as the analog beams used by the network side device for other terminals for communication or sensing services. In this way, the utilization rate of beam resources can be improved.

[0390] In some embodiments of the present application, the radio frequency unit 101 is further configured to receive at least one second configuration information from the network side device, the second configuration information being used to configure the at least one terminal to report the precoding information. The radio frequency unit 101 is further configured to send the precoding information to the network side device.

[0391] In some embodiments of the present application, the radio frequency unit 101 is further configured to send the first measurement information to the network side device, the first measurement information including at least one of the following: indication information of whether the sensing target is detected; the number of measured sensing targets; the parameter estimation result of the detected sensing target; and spectrum information.

[0392] In the case where the terminal is a second terminal:

[0393] The radio frequency unit 101 is configured to receive the first configuration information from the network side device, the first configuration information being used to configure the M first information for the at least one terminal, the at least one terminal including the second terminal, the second terminal being used only for communication functions, and the first information including at least one of the following: angle information, time delay information, and Doppler shift information.

[0394] The processor 110 is configured to determine the precoding information based on the M first information and the N reference signal resources.

[0395] M and N are positive integers.

[0396] The terminal is a second terminal. Since the first configuration information received by the second terminal is the same as the first configuration information received by other terminals in the at least one terminal, the at least one terminal can determine the precoding information based on the same M first information (at least one of angle information, time delay information and Doppler shift information) and N reference signal resources, so that the probability that the analog beams in the precoding information determined by the second terminal are the same as the analog beams in the precoding information determined by the other terminals can be improved, so that after the at least one terminal reports the determined precoding information to the network side device, the network side device can use the same analog beams when determining the precoding matrix for the at least one terminal, and then the analog beams used by the network side device for the communication service of the second terminal can be the same as the analog beams used by the network side device for the communication service or sensing service of the other terminals, so that the utilization rate of beam resources can be improved.

[0397] In some embodiments of the present application, the radio frequency unit 101 is further configured to receive at least one second configuration information from the network side device, the second configuration information being used for configuring the at least one terminal to report the precoding information, and send the precoding information to the network side device.

[0398] It can be understood that the implementation processes of the implementation manners mentioned in the embodiments can refer to the related descriptions of the method embodiments and achieve the same or corresponding technical effects. To avoid repetition, they will not be described here again.

[0399] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement the steps of the method embodiments shown in FIGS. 4 to 7. The network side device embodiments correspond to the network side device method embodiments described above. The implementation processes and implementation manners of the method embodiments described above can be applied to the network side device embodiments and achieve the same technical effects.

[0400] Specifically, the embodiments of the present application also provide a network side device, which can be the precoding information determination apparatus shown in FIG. 13. As shown in FIG. 18, the network side device 200 comprises an antenna 201, a radio frequency device 202, a baseband device 203, a processor 204 and a memory 205. The antenna 201 is connected to the radio frequency device 202. In the uplink direction, the radio frequency device 202 receives information through the antenna 201 and sends the received information to the baseband device 203 for processing. In the downlink direction, the baseband device 203 processes the information to be sent and sends it to the radio frequency device 202. The radio frequency device 202 processes the received information and sends it out through the antenna 201.

[0401] The method performed by the network side device in the above embodiments can be implemented in the baseband device 203, which includes a baseband processor.

[0402] The baseband device 203 may, for example, include at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 18, one of which is a baseband processor, for example, connected to the memory 205 through a bus interface to call a program in the memory 205 to perform the network device operations shown in the above method embodiments.

[0403] The network side device may, for example, further include a network interface 206, which is a common public radio interface (CPRI), for example.

[0404] Specifically, the network side device 200 of the embodiments of the present application further includes instructions or programs stored in the memory 205 and executable on the processor 204, and the processor 204 calls the instructions or programs in the memory 205 to perform the method performed by each module shown in FIG. 13 and achieve the same technical effects, and thus the description is omitted here.

[0405] Specifically, the embodiments of the present application further provide a network side device. As shown in FIG. 19, the network side device 300 includes a processor 301, a network interface 302, and a memory 303. The network side device can be the precoding information determination device shown in FIG. 13. The network interface 302 is a common public radio interface (CPRI), for example.

[0406] Specifically, the network side device 300 of the embodiments of the present application further includes instructions or programs stored in the memory 303 and executable on the processor 301, and the processor 301 calls the instructions or programs in the memory 303 to perform the method performed by each module shown in FIG. 13 and achieve the same technical effects, and thus the description is omitted here.

[0407] The embodiments of the present application further provide a readable storage medium, which stores programs or instructions, and the programs or instructions are executed by a processor to implement each process of the above precoding information determination method embodiments and achieve the same technical effects, and thus the description is omitted here.

[0408] The processor is the processor in the terminal in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0409] The chip provided by the embodiment of the present application can also be referred to as a system chip, a system on chip (SOC), a chip system or a system on chip (SOC) chip.

[0410] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system on chip (SOC), a chip system or a system on chip (SOC) chip.

[0411] The computer program / program product provided by the embodiment of the present application is stored in a storage medium, and is executed by at least one processor to implement the processes of the precoding information determination method embodiments and achieve the same technical effects. To avoid repetition, details are not repeated here.

[0412] The wireless communication system provided by the embodiment of the present application includes a first terminal, a second terminal and a network side device. The first terminal can be used to execute the steps of the precoding information determination method described above. The second terminal can be used to execute the steps of the precoding information determination method described above. The network side device can be used to execute the steps of the precoding information determination method described above.

[0413] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to the order of performing the functions shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in a reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0414] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned example methods can be realized by means of a computer software product and a general hardware platform as necessary, and of course can also be realized by hardware. The computer software product is stored in a storage medium (such as a ROM, a RAM, a magnetic disc, an optical disc, etc.), and includes a plurality of instructions for enabling a terminal or a network side device to execute the method described in each embodiment of the present application.

[0415] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative rather than limiting. Those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, and these embodiments all belong to the protection of the present application.

Claims

1. A method for determining precoding information, comprising: sending, by a network side device, first configuration information to at least one terminal, the first configuration information being used to configure M first information for the at least one terminal, the first information comprising at least one of the following: angle information, time delay information, Doppler shift information; wherein the M first information and N reference signal resources are used to determine precoding information, M and N are positive integers.

2. The method of claim 1, wherein, The N reference signal resources satisfy at least one of the following: The N reference signal resources are periodic resources; The N reference signal resources belong to at least two resource sets.

3. The method of claim 2, wherein, In the case where the N reference signal resources belong to at least two resource sets, the downlink spatial domain transmission filter of the reference signal resources with different time domain resources in the same resource set is the same.

4. The method of any one of claims 1 to 3, wherein, Each of the reference signal resources is associated with at least one of the M first information.

5. The method of any one of claims 1 to 3, wherein, The N reference signal resources belong to at least two resource sets, and one of the resource sets is associated with at least one of the M first information.

6. The method of claim 5, wherein, In the case where the second information comprises Doppler shift information, the Doppler measurement related parameter corresponding to the second information satisfies at least one of the following: related to the resource configuration information of the reference signal resources in a first resource set; related to the resource configuration information of the reference signal resources with the same first sequence number in at least two first resource sets; wherein the second information is any one of the M first information, and the first resource set is the resource set associated with the second information.

7. The method of any one of claims 1 to 6, wherein, The method further comprises: sending, by the network side device, at least one second configuration information to the at least one terminal, the second configuration information being used to configure the at least one terminal to report the precoding information; receiving, by the network side device, at least one of the precoding information from the at least one terminal.

8. The method of claim 7, wherein, The N reference signal resources are associated with at least one of the second configuration information, and one of the second configuration information is associated with at least one of the M first information.

9. The method of claim 7 or 8, wherein, The at least one terminal comprises a first terminal, and the first terminal is used at least for sensing function;The precoding information from the first terminal comprises at least one of the following: at least one first identifier; first digital precoding information; first precoding matrix indication (PMI); wherein the first identifier comprises at least one of the following: an identifier of the reference signal resource determined by the first terminal, an identifier of the resource set determined by the first terminal; The first digital precoding information comprises at least one of the following: the digital precoding information corresponding to the reference signal resource indicated by the first identifier, the digital precoding information corresponding to the resource set indicated by the first identifier.

10. The method of claim 9, wherein, The first digital precoding information indicates at least one of the following: at least one first spatial domain vector; at least one first spatial domain beam information; at least one first port selection information; at least one first precoding codebook. The first port selection information is used to indicate a port of a reference signal selected by the first terminal; the first spatial domain beam information comprises a linear combination of at least one spatial domain basis vector; and the first precoding codebook comprises at least one precoding vector.

11. The method of claim 7 or 8, wherein, The at least one terminal comprises a second terminal, and the second terminal is only used for a communication function; and the precoding information from the second terminal comprises at least one of the following: at least one second identifier; a second PMI. The second identifier comprises at least one of the following: an identifier of the reference signal resource determined by the second terminal, and an identifier of a resource set determined by the second terminal.

12. The method of any one of claims 1 to 11, wherein, The at least one terminal comprises a first terminal, and the first terminal is at least used for a sensing function; and the method further comprises: The network-side device receives first measurement information from the first terminal, and the first measurement information comprises at least one of the following: indication information of whether a sensing target is detected; a number of measured sensing targets; a parameter estimation result of a detected sensing target; and spectrum information.

13. A precoding information determination method, comprising: A first terminal receives first configuration information from a network-side device, and the first configuration information is used to configure M first information for at least one terminal, at least one of which comprises the first terminal, and the first terminal is at least used for a sensing function; and the first information comprises at least one of the following: angle information, time delay information, and Doppler frequency shift information; The first terminal determines precoding information based on M first information and N reference signal resources; Wherein, M and N are positive integers.

14. The method of claim 13, wherein, The method further comprises: The first terminal receives at least one second configuration information from the network-side device, and the second configuration information is used to configure at least one terminal to report the precoding information; The first terminal sends the precoding information to the network-side device.

15. The method of claim 14, wherein, The precoding information comprises at least one of the following: at least one first identifier; first digital precoding information; a first PMI. The first identifier comprises at least one of the following: an identifier of the reference signal resource determined by the first terminal, and an identifier of a resource set determined by the first terminal; The first digital precoding information comprises at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier, and digital precoding information corresponding to a resource set indicated by the first identifier.

16. The method of claim 15, wherein, At least one of the first identifiers comprises at least one of the following: an identifier of a second reference signal resource; an identifier of a second resource set; The second reference signal resource is at least one of the reference signal resources associated with at least part of the first information in the M first information, which satisfies a predefined sensing requirement; The second resource set is the resource set to which the second reference signal resource belongs.

17. The method of any one of claims 13 to 16, wherein, The method further comprises: The first terminal sends first measurement information to the network-side device, and the first measurement information comprises at least one of the following: indication information of whether a sensing target is detected; a number of measured sensing targets; a parameter estimation result of a detected sensing target; spectrum information. 18.A method for determining precoding information, comprising: receiving, by a second terminal, first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the second terminal, the second terminal being used only for communication function, the first information including at least one of the following: angle information, time delay information, Doppler shift information; determining, by the second terminal, precoding information based on M first information and N reference signal resources; wherein M and N are positive integers.

19. The method of claim 18, wherein, The method further comprises: receiving, by the second terminal, at least one second configuration information from the network side device, the second configuration information being used to configure at least one terminal to report the precoding information; sending, by the second terminal, the precoding information to the network side device.

20. The method of claim 19, wherein, The precoding information includes at least one of the following: at least one second identifier; a second PMI; wherein the second identifier includes at least one of the following: an identifier of the reference signal resource determined by the second terminal, an identifier of a resource set determined by the second terminal.

21. The method of claim 20, wherein, The at least one second identifier includes at least one of the following: an identifier of a second reference signal resource; an identifier of a second resource set; an identifier of a third reference signal resource; an identifier of a third resource set; wherein the second reference signal resource is at least one of the reference signal resources associated with at least part of the M first information, which satisfies a predefined sensing requirement; the second resource set is the resource set to which the second reference signal resource belongs; the third reference signal resource is at least one of the reference signal resources associated with at least part of the M first information, which satisfies a predefined communication requirement; the third resource set is the resource set to which the third reference signal resource belongs.

22. A precoding information determining apparatus, the precoding information determining apparatus comprising: a sending module; The sending module is configured to send first configuration information to at least one terminal, the first configuration information being used to configure M first information for at least one terminal, the first information including at least one of the following: angle information, time delay information, Doppler shift information; wherein M first information and N reference signal resources are used to determine precoding information, and M and N are positive integers.

23. The apparatus of claim 22, wherein, The N reference signal resources satisfy at least one of the following: The N reference signal resources are periodic resources; The N reference signal resources belong to at least two resource sets.

24. The apparatus of claim 23, wherein, In the case where the N reference signal resources belong to at least two resource sets, the downlink spatial domain transmission filter of the reference signal resource with different time domain resources in the same resource set is the same.

25. The apparatus of any one of claims 22-24, wherein, Each reference signal resource is associated with at least one of the M first information.

26. The apparatus of any one of claims 22-24, wherein, The N reference signal resources belong to at least two resource sets, and one resource set is associated with at least one of the M first information.

27. The apparatus of claim 26, wherein, In a case that the second information comprises Doppler shift information, the Doppler measurement related parameter corresponding to the second information satisfies at least one of the following conditions: is related to resource configuration information of the reference signal resource in the first resource set; is related to resource configuration information of the reference signal resource with the same first sequence number in at least two first resource sets; wherein the second information is any one of the M first information; and the first resource set is the resource set associated with the second information.

28. The apparatus of any one of claims 22-27, wherein, The sending module is further configured to send at least one second configuration information to at least one terminal, the second configuration information being used for configuring the at least one terminal to report the precoding information. The precoding information determination apparatus further comprises a receiving module. The receiving module is configured to receive at least one precoding information from at least one terminal.

29. The apparatus of claim 28, wherein, N reference signal resources are associated with at least one second configuration information, and one second configuration information is associated with at least one of the M first information.

30. The apparatus of claim 28 or 29, wherein, The at least one terminal comprises a first terminal, and the first terminal is used at least for sensing function; the precoding information from the first terminal comprises at least one of the following: at least one first identifier; first digital precoding information; first PMI; wherein the first identifier comprises at least one of the following: an identifier of the reference signal resource determined by the first terminal, and an identifier of a resource set determined by the first terminal; the first digital precoding information comprises at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier, and digital precoding information corresponding to the resource set indicated by the first identifier.

31. The apparatus of claim 30, wherein, The first digital precoding information indicates at least one of the following: at least one first spatial domain vector; at least one first spatial domain beam information; at least one first port selection information; at least one first precoding codebook; wherein the first port selection information is used for indicating a port of a reference signal selected by the first terminal; the first spatial domain beam information comprises a linear combination of at least one spatial domain basis vector; and the first precoding codebook comprises at least one precoding vector.

32. The apparatus of claim 28 or 29, wherein, The at least one terminal comprises a second terminal, and the second terminal is used only for communication function; the precoding information from the second terminal comprises at least one of the following: at least one second identifier; second PMI; wherein the second identifier comprises at least one of the following: an identifier of the reference signal resource determined by the second terminal, and an identifier of a resource set determined by the second terminal.

33. The apparatus of any one of claims 22-32, wherein, The at least one terminal comprises a first terminal, and the first terminal is used at least for sensing function; the precoding information determination apparatus further comprises a receiving module. The receiving module is configured to receive first measurement information from the first terminal, and the first measurement information comprises at least one of the following: indication information of whether a sensing target is detected; a number of measured sensing targets; a parameter estimation result of a detected sensing target; spectrum information.

34. A precoding information determination apparatus, the precoding information determination apparatus comprising: a receiving module and a processing module; The receiving module is configured to receive first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the precoding information determination apparatus, the precoding information determination apparatus being used for sensing function, and the first information including at least one of angle information, time delay information, and Doppler frequency shift information. The processing module is configured to determine precoding information based on the M first information configured by the first configuration information received by the receiving module and N reference signal resources. M and N are positive integers.

35. The apparatus of claim 34, wherein, The receiving module is further configured to receive at least one second configuration information from the network side device, the second configuration information being used to configure the at least one terminal to report the precoding information. The precoding information determination apparatus further includes a sending module. The sending module is configured to send the precoding information to the network side device.

36. The apparatus of claim 35, wherein, The precoding information includes at least one of the following: At least one first identifier; First digital precoding information; First PMI. The first identifier includes at least one of the following: an identifier of the reference signal resource determined by the first terminal and an identifier of a resource set determined by the first terminal. The first digital precoding information includes at least one of the following: digital precoding information corresponding to the reference signal resource indicated by the first identifier and digital precoding information corresponding to the resource set indicated by the first identifier.

37. The apparatus of claim 36, wherein, At least one of the first identifier includes at least one of the following: An identifier of a second reference signal resource; An identifier of a second resource set The second reference signal resource is at least one reference signal resource that meets a predefined sensing requirement among the reference signal resources associated with at least part of the M first information. The second resource set is the resource set to which the second reference signal resource belongs.

38. The apparatus of any one of claims 34-37, wherein, The precoding information determination apparatus further includes a sending module. The sending module is configured to send first measurement information to the network side device, the first measurement information including at least one of the following: Indication information of whether a sensing target is detected; A number of measured sensing targets; Parameter estimation results of the detected sensing targets; Spectrum information.

39. A precoding information determination apparatus, the precoding information determination apparatus comprising: Receiving module and processing module; The receiving module is configured to receive first configuration information from a network side device, the first configuration information being used to configure M first information for at least one terminal, the at least one terminal including the precoding information determination apparatus, the precoding information determination apparatus being used for communication function, and the first information including at least one of angle information, time delay information, and Doppler frequency shift information. The processing module is configured to determine precoding information based on the M first information configured by the first configuration information received by the receiving module and N reference signal resources. M and N are positive integers.

40. The apparatus of claim 39, wherein, The receiving module is further configured to receive at least one second configuration information from the network side device, the second configuration information being used to configure the at least one terminal to report the precoding information. The pre-coding information determining apparatus further comprises a sending module; The sending module is configured to send the pre-coding information to the network side device.

41. The apparatus of claim 40, wherein, The pre-coding information comprises at least one of: at least one second identifier; a second PMI; The second identifier comprises at least one of:

42. The device of claim 41, wherein, an identifier of the reference signal resource determined by the second terminal, and an identifier of the resource set determined by the second terminal. The at least one second identifier comprises at least one of: an identifier of a second reference signal resource; an identifier of a second resource set; an identifier of a third reference signal resource; an identifier of a third resource set; The second reference signal resource is at least one reference signal resource, from the reference signal resources associated with at least part of the first information, that satisfies a predefined sensing requirement; The second resource set is the resource set to which the second reference signal resource belongs; The third reference signal resource is at least one reference signal resource, from the reference signal resources associated with at least part of the first information, that satisfies a predefined communication requirement; The third resource set is the resource set to which the third reference signal resource belongs.

43. A network side device comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement the steps of the pre-coding information determining method according to any one of claims 1 to 12.

44. A terminal comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implement the steps of the pre-coding information determining method according to any one of claims 13 to 17, or implement the steps of the pre-coding information determining method according to any one of claims 18 to 21.

45. A readable storage medium, the readable storage medium storing programs or instructions, the programs or instructions, when executed by a processor, implement the pre-coding information determining method according to any one of claims 1 to 12, or implement the steps of the pre-coding information determining method according to any one of claims 13 to 17, or implement the steps of the pre-coding information determining method according to any one of claims 18 to 21.

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