Beam determination method and apparatus

Abstract

This disclosure provides a beam determination method and apparatus. The method, executed by a first device, includes: determining a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial reception parameters for receiving the reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a quasi-co-located (QCL) relationship. Therefore, the first device can accurately locate the sensing target by using the determined first sensing receiving beam for receiving the sensing reference signal, thereby improving the performance of the sensing system.

Description

Beamforming method and apparatus Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a beam determination method and apparatus. Background Technology

[0002] In recent years, wireless communication has developed rapidly, and the increasing demand for various vertical services has led to a growing demand for communication technology. User equipment not only needs to communicate with other devices, but also needs to sense surrounding devices or the environment. Therefore, Integrated Sensing and Communications (ISAC) technology has emerged. Summary of the Invention

[0003] This disclosure provides a beam determination method and apparatus, in which a first device determines a first sensing receiving beam for receiving sensing reference signals, and uses the determined first sensing receiving beam to receive the sensing reference signals, thereby achieving accurate positioning of the sensing target and improving the performance of the sensing system.

[0004] This disclosure presents a beam determination method and apparatus.

[0005] According to a first aspect of the present disclosure, a beam determination method is proposed, executed by a first device, comprising: determining a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving the reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a quasi-co-located QCL relationship.

[0006] In the above embodiments, the first device can receive the sensing reference signal using the determined first sensing receiving beam, thereby accurately locating the sensing target and improving the performance of the sensing system.

[0007] According to a second aspect of the present disclosure, a beam determination method is proposed, executed by a second device, comprising: sending first information to a first device, wherein the first information is used by the first device to determine a first sensing receiving beam for receiving a sensing reference signal; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0008] In the above embodiments, the second device can indicate first information to the first device so that the first device can determine a first sensing receiving beam for receiving sensing reference signals and use the determined first sensing receiving beam to receive sensing reference signals, thereby enabling accurate positioning of sensing targets and improving the performance of the sensing system.

[0009] According to a third aspect of the present disclosure, a beam determination method is proposed, executed by a third device, comprising: receiving second information sent by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, the sensing transmission beam for transmitting the sensing reference signal being determined by the second device based on a measurement result sent by a first device, the measurement result being determined by the first device using a first sensing reception beam to receive a sensing reference signal sent by the first device, the second device, or the third device, and measuring the sensing reference signal; the first sensing reception beam being determined by the first device based on the first information, wherein the first information includes at least one of the following: information indicating that a second sensing reception beam is unavailable, the second sensing reception beam being different from the first sensing reception beam; information indicating the first sensing reception beam; location information of a sensing target; and spatial reception parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0010] In the above embodiments, the third device can receive the second information sent by the second device to determine the sensing transmission beam used to send the sensing reference signal, so as to perform the sensing process together with the first device, thereby achieving accurate positioning of the sensing target and improving the performance of the sensing system.

[0011] According to a fourth aspect of the present disclosure, a first device is provided, comprising: a processing module, configured to determine a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving the reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0012] According to a fifth aspect of the present disclosure, a second device is provided, comprising: a transceiver module configured to send first information to a first device, wherein the first information is used by the first device to determine a first sensing receiving beam for receiving a sensing reference signal; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0013] According to a sixth aspect of the present disclosure, a third device is provided, comprising: a transceiver module for receiving second information transmitted by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, the sensing transmission beam for transmitting the sensing reference signal being determined by the second device based on a measurement result transmitted by a first device, the measurement result being determined by the first device using a first sensing reception beam to receive a sensing reference signal transmitted by the first device, the second device, or the third device, and measuring the sensing reference signal; the first sensing reception beam being determined by the first device based on the first information, wherein the first information includes at least one of the following: information indicating that the second sensing reception beam is unavailable, the second sensing reception beam being different from the first sensing reception beam; information indicating the first sensing reception beam; location information of a sensing target; and spatial reception parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0014] According to a seventh aspect of the present disclosure, a first device is provided, comprising: one or more processors, wherein the first device is configured to perform the method described in the first aspect.

[0015] According to an eighth aspect of the present disclosure, a second device is provided, comprising: one or more processors, wherein the second device is configured to perform the method described in the second aspect.

[0016] According to a ninth aspect of the present disclosure, a third device is provided, comprising: one or more processors, wherein the third device is configured to perform the method described in the third aspect.

[0017] According to a tenth aspect of the present disclosure, a communication device is provided, comprising: one or more processors; and a memory coupled to the processors, the memory storing instructions which, when executed by the processors, cause the communication device to perform the method as described in at least one of the first, second, and third aspects.

[0018] According to an eleventh aspect of the present disclosure, a communication system is provided, comprising: a first device, a second device, and a third device; the first device performs the method as described in the first aspect, the second device performs the method as described in the second aspect embodiment, and the third device performs the method as described in the third aspect embodiment.

[0019] According to a twelfth aspect of the present disclosure, a computer storage medium is provided, wherein the computer storage medium stores computer-executable instructions; after being executed by a processor, the computer-executable instructions are capable of implementing the method described in at least one of the first, second, and third aspects.

[0020] According to a thirteenth aspect of the present disclosure, a computer program product is provided, wherein the computer program product stores a computer program; after being executed by a processor, the computer program is able to implement the method described in at least one of the first, second, and third aspects.

[0021] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0023] Figure 1A is an architecture diagram of a communication system provided in an embodiment of this disclosure;

[0024] Figure 1B is a schematic diagram of a sensing method provided in an embodiment of this disclosure;

[0025] Figure 2A is a flowchart of a beam determination method provided in an embodiment of this disclosure;

[0026] Figure 2B is a flowchart of another beam determination method provided in an embodiment of this disclosure;

[0027] Figure 2C is a flowchart of another beam determination method provided in an embodiment of this disclosure;

[0028] Figure 3 is a schematic diagram of a sensing process provided in an embodiment of this disclosure;

[0029] Figure 4A is a flowchart of another beam determination method provided in an embodiment of this disclosure;

[0030] Figure 4B is a flowchart of another beam determination method provided in an embodiment of this disclosure;

[0031] Figure 5A is a structural diagram of a first device provided in an embodiment of this disclosure;

[0032] Figure 5B is a structural diagram of a second device provided in an embodiment of this disclosure;

[0033] Figure 5C is a structural diagram of a third device provided in an embodiment of this disclosure;

[0034] Figure 6A is a structural diagram of a communication device provided in an embodiment of this disclosure;

[0035] Figure 6B is a structural diagram of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0036] This disclosure presents a beam determination method and apparatus.

[0037] In a first aspect, embodiments of this disclosure propose a beam determination method, executed by a first device, comprising: determining a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving the reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0038] In the above embodiments, the first device can receive the sensing reference signal using the determined first sensing receiving beam, thereby accurately locating the sensing target and improving the performance of the sensing system.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments the above method further includes: the first device receiving first information sent by the second device.

[0040] In the above embodiments, the first device can determine a first sensing receiving beam for receiving sensing reference signals based on the first information sent by the second device, and then use the determined first sensing receiving beam to receive the sensing reference signals, thereby enabling accurate positioning of the sensing target and improving the performance of the sensing system.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0042] In the above embodiments, when the second sensing receiving beam currently in use is unavailable or about to become unavailable, the first device can receive the first information sent by the second device to determine the first sensing receiving beam for receiving the sensing reference signal, and then use the determined first sensing receiving beam to receive the sensing reference signal, thereby enabling accurate positioning of the sensing target and improving the performance of the sensing system.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the above method further includes: the first device determining that the currently used second sensing receiving beam is unavailable or about to become unavailable, and sending a handover request message to the second device, wherein the handover request message is used to request the second device to configure a sensing receiving beam for the first device.

[0044] In the above embodiments, when the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, it can send a switching request message to the second device, requesting the first device to configure a sensing receiving beam for the first device, so as to determine a first sensing receiving beam for receiving sensing reference signals, and then use the determined first sensing receiving beam to receive sensing reference signals, thereby enabling accurate positioning of sensing targets and improving the performance of the sensing system.

[0045] In conjunction with some embodiments of the first aspect, in some embodiments, the above method further includes: a first device determining that the currently used second sensing receiving beam is unavailable or about to become unavailable, and using a beam scanning method to determine first information.

[0046] In the above embodiments, when the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, it can determine the first sensing receiving beam for receiving the sensing reference signal by beam scanning. Specifically, in a monostation sensing mode, the first device can use a candidate sensing transmitting beam to transmit the sensing reference signal, and then use the candidate sensing receiving beam to receive the sensing reference signals from the first device, the second device, or the third device, perform measurements to determine the measurement results, and determine the first sensing receiving beam for receiving the sensing reference signal based on the measurement results. In a bistation sensing mode, the first device can instruct the second or third device to use a candidate transmitting beam to transmit the sensing reference signal. The first device can then use the candidate sensing receiving beam to receive the sensing reference signals from the first device, the second device, or the third device, perform measurements to determine the measurement results, and determine the first sensing receiving beam for receiving the sensing reference signal based on the measurement results.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the first device determines a first sensing receiving beam for receiving a sensing reference signal based on the location information of the sensing target, including: determining, based on the location information of the sensing target, a beam whose main lobe center direction passes through the sensing target as the first sensing receiving beam; or determining, based on the location information of the sensing target, a candidate sensing receiving beam whose main lobe center direction is closest to the sensing target as the first sensing receiving beam.

[0048] In the above embodiments, the first device can determine the sensing receiving beam based on the location information of the sensing target, and use the determined first sensing receiving beam to receive the sensing reference signal, thereby achieving accurate positioning of the sensing target and improving the performance of the sensing system.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the above method further includes: a first device receiving a sensing reference signal sent by a first device, a second device, or a third device using a first sensing receiving beam; measuring the sensing reference signal to determine the measurement result; and sending the measurement result to a second device.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the above method further includes: a first device receiving second information sent by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, and the sensing transmission beam for transmitting the sensing reference signal is determined by the second device based on the measurement results sent by the first device.

[0051] In the above embodiments, after the first device determines the sensing receiving beam, it can receive the sensing reference signal and perform measurement, determine the measurement result and send it to the second device, the second device determines the sensing transmitting beam and instructs it to the first device, and the first device uses a single-station sensing method to sense the sensing target, which can improve the performance of the sensing system.

[0052] Secondly, embodiments of this disclosure propose a beam determination method, executed by a second device, comprising: sending first information to a first device, wherein the first information is used by the first device to determine a first sensing receiving beam for receiving a sensing reference signal; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0053] In the above embodiments, the second device can indicate first information to the first device so that the first device can determine a first sensing receiving beam for receiving sensing reference signals and use the determined first sensing receiving beam to receive sensing reference signals, thereby enabling accurate positioning of sensing targets and improving the performance of the sensing system.

[0054] In conjunction with some embodiments of the second aspect, in some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0055] In conjunction with some embodiments of the second aspect, in some embodiments, the above method further includes: the second device receiving a handover request message sent by the first device, wherein the handover request message is sent by the first device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable, and the handover request message is used to request the second device to configure a sensing receiving beam for the first device.

[0056] In conjunction with some embodiments of the second aspect, in some embodiments, the above method further includes: the second device receiving a measurement result sent by the first device, wherein the measurement result is determined by the first device using a first sensing receiving beam to receive a sensing reference signal sent by the first device, the second device, or the third device, and measuring the sensing reference signal.

[0057] In conjunction with some embodiments of the second aspect, in some embodiments the above method further includes: the second device determining a sensing transmission beam for transmitting a sensing reference signal based on the measurement results.

[0058] In conjunction with some embodiments of the second aspect, in some embodiments, the above method further includes: the second device sending second information to the first device or the third device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal.

[0059] Thirdly, embodiments of this disclosure propose a beam determination method, executed by a third device, comprising: receiving second information sent by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, the sensing transmission beam for transmitting the sensing reference signal is determined by the second device based on measurement results sent by a first device, the measurement results being determined by the first device using a first sensing reception beam to receive sensing reference signals sent by the first device, the second device, or the third device, and measuring the sensing reference signals; the first sensing reception beam is determined by the first device based on the first information, wherein the first information includes at least one of the following: information indicating that a second sensing reception beam is unavailable, the second sensing reception beam being different from the first sensing reception beam; information indicating the first sensing reception beam; location information of the sensing target; spatial reception parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0060] In the above embodiments, the third device can receive the second information sent by the second device to determine the sensing transmission beam used to send the sensing reference signal, so as to perform the sensing process together with the first device, thereby achieving accurate positioning of the sensing target and improving the performance of the sensing system.

[0061] Fourthly, embodiments of this disclosure provide a first device, comprising: a processing module, configured to determine a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving the reference signal or sensing the reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0062] Fifthly, embodiments of this disclosure propose a second device, comprising: a transceiver module, configured to send first information to a first device, wherein the first information is used by the first device to determine a first sensing receiving beam for receiving a sensing reference signal; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of a sensing target; and spatial receiving parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0063] In a sixth aspect, embodiments of this disclosure propose a third device, comprising: a transceiver module, configured to receive second information transmitted by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, the sensing transmission beam for transmitting the sensing reference signal being determined by the second device based on measurement results transmitted by a first device, the measurement results being determined by the first device using a first sensing reception beam to receive sensing reference signals transmitted by the first device, the second device, or the third device, and measuring the sensing reference signals; the first sensing reception beam being determined by the first device based on the first information, wherein the first information includes at least one of the following: information indicating that the second sensing reception beam is unavailable, the second sensing reception beam being different from the first sensing reception beam; information indicating the first sensing reception beam; location information of the sensing target; and spatial reception parameters for receiving a reference signal or a sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0064] In a seventh aspect, a first device is proposed, comprising: one or more processors, wherein the first device is configured to perform the method described in the first aspect.

[0065] In an eighth aspect, a second device is proposed, comprising: one or more processors, wherein the second device is configured to perform the method described in the second aspect.

[0066] A ninth aspect proposes a third device comprising: one or more processors, wherein the third device is configured to perform the method described in the third aspect.

[0067] In a tenth aspect, embodiments of this disclosure provide a communication device, the communication device comprising: one or more processors; and a memory coupled to the processors, the memory storing instructions which, when executed by the processors, cause the communication device to perform the method described in at least one of the first, second, and third aspects.

[0068] Eleventhly, embodiments of this disclosure provide a communication system comprising: a first device, a second device, and a third device; wherein the first device performs the method as described in the first aspect, the second device performs the method as described in the second aspect embodiment, and the third device performs the method as described in the third aspect embodiment.

[0069] In a twelfth aspect, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method described in at least one of the first, second, and third aspects.

[0070] In a thirteenth aspect, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in at least one of the first, second, and third aspects.

[0071] In a fourteenth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in at least one of the first, second, and third aspects.

[0072] In a fifteenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in at least one of the first, second, and third aspects described above.

[0073] It is understood that the aforementioned communication equipment, communication system, storage medium, program product, etc., are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0074] This disclosure provides a beam determination method and apparatus. In some embodiments, the terms beam determination method, information processing method, communication method, etc., can be used interchangeably.

[0075] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0076] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0077] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0078] In the embodiments disclosed herein, "multiple" refers to two or more.

[0079] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0080] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0081] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0082] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0083] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0084] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0085] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0086] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0087] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0088] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0089] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0090] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0091] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0092] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0093] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0094] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0095] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0096] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0097] Figure 1A is an architecture diagram of a communication system provided in an embodiment of this disclosure.

[0098] As shown in Figure 1A, the communication system 100 includes a terminal 101, an access network device 102, and a core network device 103.

[0099] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, and wireless terminal in smart home.

[0100] In some embodiments, the access network device 102 may be a node or device that connects a terminal to a wireless network. The access network device 102 may include at least one of the following in a 5G communication system: an evolved Node B (eNB), a next-generation eNB (ng-eNB), a next-generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0101] In some embodiments, the core network device 103 may be a single device, or multiple devices or a group of devices, including all or part of a first network element, a second network element, a third network element, a fourth network element, etc. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a 6G Core Network (6GCN), and a Next Generation Core (NGC).

[0102] In some embodiments, the first network element is used to implement terminal access management and mobility management. It is responsible for terminal state maintenance, terminal reachability management, mobility management (MM), forwarding of non-access stratum (NAS) messages, and forwarding of session management (SM) N2 messages.

[0103] In some embodiments, the second network element is used to coordinate and schedule the resources required for the location of the terminal.

[0104] In some embodiments, the third network element is used to perform wireless sensing using access network equipment or terminals to realize sensing services.

[0105] In some embodiments, the first network element is, for example, an access and mobility management function (AMF) network element.

[0106] In some embodiments, the second network element is, for example, a Location Management Function (LMF) network element.

[0107] In some embodiments, the third network element is, for example, a sensing function (SF) network element.

[0108] In some embodiments, at least one of the first network element, the second network element, and the third network element can be independent of the core network equipment.

[0109] In some embodiments, at least one of the first network element, the second network element, and the third network element may be part of the core network equipment.

[0110] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0111] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1A, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1A are illustrative. The communication system may include all or some of the main bodies in FIG1A, or it may include other main bodies outside of FIG1A. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0112] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), Super 3G, IMT-Advanced, 4th Generation Mobile Communication System (4G), 5th Generation Mobile Communication System (5G), 5G New Radio (NR), 6th Generation Mobile Communication System (6G), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, ultra-wideband (UWB), Bluetooth (a registered trademark), public land mobile network (PLMN) networks, device-to-device (D2D) systems, machine-to-machine (M2M) systems, internet of things (IoT) systems, vehicle-to-everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0113] In some embodiments, the sensing system integrates a radar system on top of a communication system in related technologies, and senses information such as the distance, speed, and angle of targets in the surrounding environment by sending sensing signals. As shown in Figure 1B, sensing systems can generally be divided into two types according to their sensing modes. The first type is mono-static sensing mode, where the transceiver can be an access network device or a terminal. The second type is bi-static sensing mode, where the transmitter can be an access network device or a terminal, and the receiver can be both an access network device and a terminal.

[0114] In communication beam management, the selection of transmit and receive beam pairs is usually completed based on three processes: P1, P2, and P3. For example, in the downlink beam management process P1, the access network device uses the same transmit beam to send a set of different reference signals. The terminal uses different receive beams to receive the reference signals and measures parameters such as layer 1 (L1) reference signal receive power (RSRP) / signal-to-interference ratio (SINR). The access network device switches to another transmit beam and repeats the above process. After the access network device has traversed the transmit beams, the terminal reports the reference signal ID corresponding to the highest L1-RSRP / SINR, thereby determining the optimal initial transmit / receive beam pair. In the downlink beam management process P2, the access network device sends different reference signals through different narrow beams within the wide transmit beam envelope determined in the P1 process. The terminal uses a fixed receive beam to receive the reference signals and measures parameters such as L1-RSRP / SINR. The terminal reports the reference signal ID corresponding to the highest L1-RSRP / SINR, thereby determining the optimal narrow transmit beam and completing the transmit beam improvement. However, in both P1 and P2 processes, the terminal only reports the optimal reference signal ID, meaning it only reports the optimal transmit beam of the access network device and does not explicitly or implicitly report its receive beam. The difference is that in a sensing system, reporting the sensing receive beam provides potential flexibility and performance gains. For example, after determining the optimal receive beam in downlink sensing, when switching to uplink sensing, the aforementioned auxiliary information will provide information for the new sensing transmitter to select its transmit beam, especially when not based on beam correspondingness. Therefore, it is necessary to consider adding information related to sensing receive beam reporting within the existing communication beam management framework. Furthermore, the switching and selection of the sensing receive beam needs to be further enhanced within this sensing reporting framework.

[0115] In related technologies, there is still no solution for beam management in sensing systems, which is an urgent problem to be solved.

[0116] Based on this, this disclosure provides a beam determination method and apparatus. The method, executed by a first device, includes: determining a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving the reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship. Therefore, the first device can accurately locate the sensing target by using the determined first sensing receiving beam to receive the sensing reference signal, thereby improving the performance of the sensing system.

[0117] Figure 2A is an interactive schematic diagram illustrating a beam determination method according to an embodiment of the present disclosure. As shown in Figure 2A, the present disclosure relates to a beam determination method, which includes:

[0118] S201A, the first device sends a handover request message to the second device.

[0119] In some embodiments, the second device receives a handover request message sent by the first device, but is not limited thereto. The second device may also receive a handover request message sent by a subject other than the first device, in which case S201A can be omitted.

[0120] In some embodiments, the second device obtains a handover request message as specified by the protocol, in which case S201A can be omitted.

[0121] In some embodiments, the second device obtains a handover request message from the higher layer(s), in which case S201A can be omitted.

[0122] In some embodiments, the second device processes the data to obtain a handover request message, in which case S201A can be omitted.

[0123] In some embodiments, the second device autonomously implements the function indicated by the switching request message, or the above function is a default or default value, in which case S201A can be omitted.

[0124] In some embodiments, the handover request message is used to request the second device to configure a sensing receiving beam for the first device.

[0125] In some embodiments, the switching request message is used to indicate that the second sensing receiving beam currently used by the first device is unavailable or will soon be unavailable.

[0126] In some embodiments, the switching request message is used to instruct the first device to receive the sensing reference signal as a sensing receiver.

[0127] In some embodiments, the switch request message is used to indicate that the first device is a sensing receiver or a sensing device.

[0128] In some embodiments, the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and sends a handover request message to the second device.

[0129] In some embodiments, if the first device determines that it is receiving sensing reference signals as a sensing receiver, it sends a handover request message to the second device.

[0130] In some embodiments, if the first device determines that it is switching from a sensing transmitter to a sensing receiver, it sends a switching request message to the second device.

[0131] In some embodiments, the first device is a terminal or an access network device. Optionally, the access network device is a base station.

[0132] In some embodiments, the second device is a terminal, an access network device, or a sensing function node. Optionally, the access network device is a base station. Optionally, the sensing function node is a function node in the core network device.

[0133] S202A, the second device sends the first information to the first device.

[0134] In some embodiments, the first device receives first information sent by the second device, but is not limited thereto. The first device may also receive first information sent by other entities other than the second device, in which case S202A may be omitted.

[0135] In some embodiments, the first device obtains first information as specified by the protocol, in which case S202A can be omitted.

[0136] In some embodiments, the first device obtains first information from the high layer(s), in which case S202A can be omitted.

[0137] In some embodiments, the first device processes information to obtain first information, in which case S202A can be omitted.

[0138] In some embodiments, the first device autonomously implements the function indicated by the first information, or the above function is a default or default setting, in which case S202A can be omitted.

[0139] In some embodiments, the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a quasi-co-location (QCL) relationship.

[0140] In this embodiment of the disclosure, the first information includes information indicating that the second sensing and receiving beam is unavailable, and the second sensing and receiving beam is different from the first sensing and receiving beam.

[0141] In some embodiments, the second sensing receiving beam is the currently used receiving beam or the previously used receiving beam.

[0142] In this embodiment of the disclosure, the first information includes information for indicating the first sensing receiving beam.

[0143] In some embodiments, the information used to indicate the first sensing and receiving beam includes at least one of the following: the beam identifier (ID) of the first sensing and receiving beam, the index of the first sensing and receiving beam, and the beam measurement result information corresponding to the first sensing and receiving beam.

[0144] In this embodiment of the disclosure, the first information includes the location information of the perceived target.

[0145] In this embodiment of the disclosure, the first information includes spatial reception parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0146] In this embodiment of the disclosure, when the first information includes spatial receiving parameters for receiving a sensing reference signal, the first device can determine a first sensing receiving beam based on the spatial receiving parameters for receiving the sensing reference signal.

[0147] In some embodiments, the QCL relationship is a QCL type D relationship.

[0148] In some embodiments, the spatial reception parameters for receiving the reference signal include at least one of the following: the reception angle of the reference signal, the reception direction of the reference signal, the power information of the reference signal, and the Doppler frequency of the reference signal.

[0149] It should be noted that when the reference signal and the sensing reference signal satisfy the QCL relationship (QCL type D), using the sensing receiving beam that receives the reference signal as the first sensing receiving beam to receive the sensing reference signal can accurately receive the sensing reference signal.

[0150] In some embodiments, the second device receives a beam request message sent by the first device and sends first information to the first device.

[0151] In some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0152] In this embodiment of the disclosure, the second device sends first information to the first device when it determines that the second sensing and receiving beam currently used by the first device is unavailable or about to become unavailable.

[0153] Understandably, the second device is responsible for controlling the sensing process of the first device. The first device sends the sensing results it obtains during the sensing process to the second device. The second device can determine the information of the sensing target and the second sensing receiving beam used by the first device to receive the sensing reference signal based on the sensing results sent by the first device. The second device can determine the position and movement of the sensing target, such as the direction and speed of movement. The second device can determine whether the second sensing receiving beam currently used by the first device is applicable. Based on this, if the second device determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable, the second device sends first information to the first device.

[0154] S203A, the first device determines the first information.

[0155] In some embodiments, the first device receives first information sent by the second device and determines the first information.

[0156] In some embodiments, the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and uses a beam scanning method to determine first information. In this case, S201A to S202A can be omitted.

[0157] The beam scanning method is related to the sensing mode adopted by the first device.

[0158] In some embodiments, when the first device adopts a single-station sensing mode, the beam scanning method includes: the first device uses a candidate sensing transmit beam to transmit a sensing reference signal, and uses a candidate sensing receive beam to receive the sensing reference signal transmitted by the first device, then performs a measurement to determine the measurement result, and determines a first sensing receive beam for receiving the sensing reference signal based on the measurement result.

[0159] In some embodiments, when the first device and the second or third device adopt a dual-station sensing mode, the beam scanning method includes: the first device instructs the second or third device to transmit a sensing reference signal using a candidate transmit beam; the first device can receive the sensing reference signal using a candidate sensing receive beam and then perform a measurement to determine the measurement result; and based on the measurement result, determines a first sensing receive beam for receiving the sensing reference signal.

[0160] S204A, the first device determines a first sensing receiving beam for receiving sensing reference signals based on the first information.

[0161] In this embodiment of the disclosure, when the first device determines the first information, it can determine the first sensing receiving beam for receiving the sensing reference signal based on the first information.

[0162] In this embodiment of the disclosure, the first information includes information indicating that the second sensing and receiving beam is unavailable, and the second sensing and receiving beam is different from the first sensing and receiving beam.

[0163] In some embodiments, the second sensing receiving beam is the currently used receiving beam or the previously used receiving beam.

[0164] In some embodiments, the first information includes information indicating that the second sensing receiving beam is unavailable. The first device determines that the second sensing receiving beam is unavailable based on the information indicating that the second sensing receiving beam is unavailable. If there are other sensing receiving beams among the candidate sensing receiving beams besides the second sensing receiving beam, the other sensing receiving beams among the candidate sensing receiving beams besides the second sensing receiving beam can be determined to be available sensing receiving beams. The first device can determine the first sensing receiving beam from the available sensing receiving beams.

[0165] In this embodiment of the disclosure, the first information includes information for indicating the first sensing receiving beam, and the first device is able to determine the first sensing receiving beam for receiving the sensing reference signal based on the information for indicating the first sensing receiving beam.

[0166] In some embodiments, the information used to indicate the first sensing and receiving beam includes at least one of the following: the beam identifier (ID) of the first sensing and receiving beam, the index of the first sensing and receiving beam, and the beam measurement result information corresponding to the first sensing and receiving beam.

[0167] In this embodiment of the disclosure, the first information includes the location information of the sensing target, and the first device is able to determine the first sensing receiving beam for receiving the sensing reference signal based on the location information of the sensing target.

[0168] In some embodiments, the first device determines a first sensing receiving beam for receiving a sensing reference signal based on the location information of the sensing target, including: determining a beam whose main lobe center direction passes through the sensing target as the first sensing receiving beam based on the location information of the sensing target; or determining a candidate sensing receiving beam whose main lobe center direction is closest to the sensing target as the first sensing receiving beam based on the location information of the sensing target.

[0169] In this embodiment of the present disclosure, the first device determines the beam whose main lobe center direction passes through the target through phase adjustment based on the location information of the target.

[0170] In this embodiment of the present disclosure, the first device determines the candidate sensing receiving beam whose main lobe center direction is closest to the sensing target among the candidate sensing receiving beams based on the location information of the sensing target.

[0171] In some embodiments, the direction of the beam main lobe center can also be referred to as the beam normal direction.

[0172] In this embodiment of the disclosure, when the first information includes spatial receiving parameters for receiving a sensing reference signal, the first device can determine a first sensing receiving beam based on the spatial receiving parameters for receiving the sensing reference signal.

[0173] It should be noted that when the reference signal and the sensing reference signal satisfy the QCL relationship (QCL type D), using the sensing receiving beam that receives the reference signal as the first sensing receiving beam to receive the sensing reference signal can accurately receive the sensing reference signal.

[0174] In this embodiment of the disclosure, the first information includes spatial receiving parameters for receiving a reference signal, wherein the sensed reference signal and the reference signal satisfy a QCL relationship, and the first device is able to determine, based on the spatial receiving parameters for receiving the reference signal, the first sensed receiving beam for receiving the sensed reference signal as the beam determined based on the spatial receiving parameters for receiving the reference signal.

[0175] In some embodiments, the spatial reception parameters for receiving the reference signal include at least one of the following: the reception angle of the reference signal, the reception direction of the reference signal, and the power information of the reference signal.

[0176] S205A, the first device uses the first sensing receiving beam to receive the sensing reference signal sent by the first device.

[0177] In this embodiment of the disclosure, when the first device determines the first sensing receiving beam for receiving the sensing reference signal, it can use the first sensing receiving beam to receive the sensing reference signal sent by the first device.

[0178] In some embodiments, the first device uses a single-station sensing mode to sense the target, wherein the sensing reference signal sent by the first device is reflected by the target and then received by the first device again.

[0179] S206A, the first device measures the sensing reference signal and determines the measurement result.

[0180] In this embodiment of the disclosure, when the first device uses a first sensing receiving beam to receive a sensing reference signal, it measures the sensing reference signal and determines the measurement result.

[0181] In some embodiments, the first device measures the sensed reference signal to determine at least one of time delay and Doppler frequency.

[0182] In some embodiments, the time delay reflects the distance of the sensing target relative to the first device, and the Doppler frequency reflects the velocity of the sensing target.

[0183] In some embodiments, the first device measures the sensing reference signal to determine the power information of the path associated with the transmit / receive beam pair. Based on the power information, it can be determined whether the path passes through the sensing target. Specifically, if the power information is greater than a power threshold, it is determined that the path passes through the sensing target.

[0184] S207A, the first device sends the measurement results to the second device.

[0185] In some embodiments, the second device receives measurement results sent by the first device, but is not limited thereto. The second device may also receive measurement results sent by other entities other than the first device, in which case S207A can be omitted.

[0186] In some embodiments, the second device acquires the measurement results specified by the protocol, in which case S207A can be omitted.

[0187] In some embodiments, the second device obtains measurement results from the high layer(s), in which case S207A can be omitted.

[0188] In some embodiments, the second device processes the data to obtain the measurement results, in which case S207A can be omitted.

[0189] In some embodiments, the second device autonomously implements the function indicated by the measurement result, or the above function is a default or default setting, in which case S207A can be omitted.

[0190] In some embodiments, the first device measures the sensing reference signal and, if the measurement result is determined, sends the measurement result to the second device.

[0191] In some embodiments, the second device is capable of storing the measurement results sent by the first device.

[0192] S208A, the second device determines the sensing transmission beam used to transmit the sensing reference signal based on the measurement results.

[0193] In this embodiment of the disclosure, the second device receives the measurement results sent by the first device and is able to determine the sensing transmission beam used to transmit the sensing reference signal.

[0194] In some embodiments, the measurement results sent by the first device to the second device include power information of the path associated with the transmit / receive beam pair. The second device can determine the path passing through the sensing target based on the power information, and then determine the sensing transmit beam for transmitting the sensing reference signal.

[0195] S209A, the second device sends the second information to the first device.

[0196] In some embodiments, the first device receives second information sent by the second device, but is not limited thereto. The first device may also receive second information sent by other entities other than the second device, in which case S209A may be omitted.

[0197] In some embodiments, the first device obtains the second information specified by the protocol, in which case S209A can be omitted.

[0198] In some embodiments, the first device obtains the second information from the higher layer(s), in which case S209A can be omitted.

[0199] In some embodiments, the first device processes the information to obtain the second information, in which case S209A can be omitted.

[0200] In some embodiments, the first device autonomously implements the function indicated by the second information, or the above function is a default or default setting, in which case S209A can be omitted.

[0201] In some embodiments, the second information is used to indicate the sensing transmission beam used to transmit the sensing reference signal.

[0202] In this embodiment of the disclosure, when the first device uses a single-station sensing mode for sensing, the first device can receive the second information sent by the second device and determine the sensing transmission beam used to send the sensing reference signal.

[0203] In some embodiments, the first device determines the measurement result in S206A. If the measurement result includes power information of the path associated with the transmit / receive beam pair, the first device can determine the path passing through the sensing target based on the power information, and then determine the sensing transmit beam for transmitting the sensing reference signal. In this case, S209A can be omitted.

[0204] By implementing the embodiments of this disclosure, the first device can receive the sensing reference signal using the determined first sensing receiving beam, thereby accurately locating the sensing target and improving the performance of the sensing system.

[0205] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0206] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) status", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", and "panel" can be used interchangeably.

[0207] In some embodiments, "acquire," "get," "obtain," "receive," "transmit," "bidirectional transmission," and "send and / or receive" can be used interchangeably and can be interpreted as receiving from other entities, acquiring from protocols, acquiring from higher layers, obtaining through self-processing, or autonomous implementation. Protocols include, for example, at least one of the 3GPP protocol, Wi-Fi protocol, and audio and / or video protocols.

[0208] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0209] The communication method involved in the embodiments of this disclosure may include at least one of S201A to S209A. For example, S201A, S202A, S203A, S204A, S205A, S206A, S207A, S208A, S209A, and S203A+S can be implemented as independent embodiments. S204A can be implemented as a standalone embodiment, S202A+S203A+S204A can be implemented as a standalone embodiment, S201A+S202A+S203A+S204A can be implemented as a standalone embodiment, S204A+S205A+S206A+S207A can be implemented as a standalone embodiment, S204A+S205A+S206A+S207A+S208A+S209A can be implemented as a standalone embodiment, but are not limited thereto.

[0210] In some embodiments, S201A, S202A, S203A, S205A, S206A, S207A, S208A, and S209A are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0211] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0212] Figure 2B is an interactive schematic diagram illustrating a beam determination method according to an embodiment of the present disclosure. As shown in Figure 2B, the present disclosure relates to a beam determination method, which includes:

[0213] S201B, the first device sends a handover request message to the second device.

[0214] The optional implementations of S201B can be found in the optional implementations of S201A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0215] The handover request message is used to request the second device to configure the sensing receiving beam for the first device.

[0216] In some embodiments, the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and sends a handover request message to the second device.

[0217] S202B, the second device sends the first information to the first device.

[0218] The optional implementations of S202B can be found in the optional implementations of S202A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0219] In some embodiments, the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0220] In some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0221] S203B, the first device determines the first information.

[0222] The optional implementations of S203B can be found in the optional implementations of S203A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0223] In some embodiments, the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and uses a beam scanning method to determine first information. In this case, S201B to S202B can be omitted.

[0224] S204B, the first device determines a first sensing receiving beam for receiving sensing reference signals based on the first information.

[0225] The optional implementations of S204B can be found in the optional implementations of S204A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0226] In some embodiments, the first device determines a first sensing receiving beam for receiving a sensing reference signal based on the location information of the sensing target, including: determining a beam whose main lobe center direction passes through the sensing target as the first sensing receiving beam based on the location information of the sensing target; or determining a candidate sensing receiving beam whose main lobe center direction is closest to the sensing target as the first sensing receiving beam based on the location information of the sensing target.

[0227] S205B, the first device uses the first sensing receiving beam to receive the sensing reference signal sent by the third device.

[0228] In this embodiment of the disclosure, when the first device determines the first sensing receiving beam for receiving the sensing reference signal, it can use the first sensing receiving beam to receive the sensing reference signal sent by the third device.

[0229] In some embodiments, the first device and the third device use a dual-station sensing mode to sense the target, wherein the sensing reference signal sent by the third device is received by the first device after being scattered and / or reflected by the target.

[0230] In some embodiments, the first device is a terminal or an access network device. Optionally, the access network device is a base station.

[0231] In some embodiments, the third device is a terminal or an access network device. Optionally, the access network device is a base station.

[0232] In some embodiments, the second device is an access network device or a sensing function node. Optionally, the access network device is a base station. Optionally, the sensing function node is a function node in a core network device.

[0233] S206B, the first device measures the sensing reference signal and determines the measurement result.

[0234] The optional implementations of S206B can be found in the optional implementations of S206A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0235] S207B, the first device sends the measurement results to the second device.

[0236] The optional implementations of S207B can be found in the optional implementations of S207A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0237] S208B, the second device determines the sensing transmission beam used to transmit the sensing reference signal based on the measurement results.

[0238] The optional implementations of S208B can be found in the optional implementations of S208A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0239] S209B, the second device sends the second information to the third device.

[0240] In some embodiments, the third device receives the second information sent by the second device, but is not limited thereto. The third device may also receive the second information sent by other entities other than the second device, in which case S209B may be omitted.

[0241] In some embodiments, the third device obtains the second information specified by the protocol, in which case S209B can be omitted.

[0242] In some embodiments, the third device obtains the second information from the higher layer(s), in which case S209B can be omitted.

[0243] In some embodiments, the third device processes the information to obtain the second information, in which case S209B can be omitted.

[0244] In some embodiments, the third device autonomously implements the function indicated by the second information, or the above function is a default or default setting, in which case S209B can be omitted.

[0245] In some embodiments, the second information is used to indicate the sensing transmission beam used to transmit the sensing reference signal.

[0246] In this embodiment of the disclosure, the third device and the first device adopt a dual-station sensing mode for sensing. The third device can receive the second information sent by the second device and determine the sensing transmission beam for transmitting the sensing reference signal. Thus, when the first device determines the sensing reception of the sensing reference signal, the first device and the third device can accurately sense the sensing target.

[0247] For example, as shown in Figure 3, the third device is an access network device, the first device is a terminal, and the second device is a sensing function node. The access network device is a sensing transmitter, and the terminal is a sensing receiver.

[0248] The access network device transmits M different sensing reference signals (SSBs) through M different sensing transmit beams, each corresponding to a sensing reference signal ID or sensing transmit beam ID {1,…,M}. The terminal receives these sensing reference signals through N sensing receive beams. Based on the sensed measurements, the terminal determines one or more optimal sensing transmit / receive beam pairs, for example, the optimal sensing beam pairs are {Tx#1,Rx#2}, {Tx#2,Rx#1}, and {Tx#2,Rx#2}, and reports the sensing transmit / receive beam pairs and associated multipath information to the sensing function node. It is worth noting that for a single sensing receiver, only a subset of the transmit / receive beam pairs may be suitable for sensing operations on the target.

[0249] Assume that the sensing beam pair {Tx#1, Rx#2} is suitable for target sensing. In subsequent sensing, when the sensed target moves, the terminal can update the sensing receiving beam for receiving the sensing reference signal based on the target's movement or rotation. For example, if the sensing receiver determines that the current sensing receiving beam cannot accurately sense the target in the environment, one example is that the sensing receiver converts the time-frequency domain channel to the Doppler time delay domain using a 2D-DFT algorithm and measures the energy corresponding to the peak value. When this energy is less than or equal to an energy threshold, it is determined that the sensing receiving beam needs to be switched. This threshold can be obtained through network configuration, sensing function node configuration, or protocol predefinition, etc. At this point, the sensing receiver needs to switch its sensing receive beam. For example, if there are six sensing receive beams, with the main lobe center directions of receive beams #1 to #6 being 10 degrees, 30 degrees, 50 degrees, 70 degrees, 90 degrees, and 110 degrees respectively, and the target being sensed moves from 30 degrees to 45 degrees, the sensing receiver can choose to receive beam #3, or adjust the phase to 45 degrees. After switching the sensing beam, the sensing receiver can report the new sensing transmit / receive beam pair and associated multipath information to the sensing function node. Based on the information reported by the sensing receiver, the sensing function node can further determine the sensing transmit beam used to transmit the sensing reference signal and instruct it to the sensing transmitter. This allows for target sensing based on the determined sensing transmit / receive beam, improving the accuracy of target sensing and enhancing the performance of the sensing system.

[0250] The communication method involved in the embodiments of this disclosure may include at least one of S201B to S209B. For example, S201B can be implemented as a standalone embodiment, S202B can be implemented as a standalone embodiment, S203B can be implemented as a standalone embodiment, S204B can be implemented as a standalone embodiment, S205B can be implemented as a standalone embodiment, S206B can be implemented as a standalone embodiment, S207B can be implemented as a standalone embodiment, S208B can be implemented as a standalone embodiment, S209B can be implemented as a standalone embodiment, and S203B+S S204B can be implemented as a standalone embodiment, S202B+S203B+S204B can be implemented as a standalone embodiment, S201B+S202B+S203B+S204B can be implemented as a standalone embodiment, S204B+S205B+S206B+S207B can be implemented as a standalone embodiment, S204B+S205B+S206B+S207B+S208B+S209B can be implemented as a standalone embodiment, but are not limited thereto.

[0251] In some embodiments, S201B, S202B, S203B, S205B, S206B, S207B, S208B, and S209B are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0252] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0253] Figure 2C is an interactive schematic diagram illustrating a beam determination method according to an embodiment of the present disclosure. As shown in Figure 2C, the present disclosure relates to a beam determination method, which includes:

[0254] S201C, the first device sends a handover request message to the second device.

[0255] The optional implementations of S201C can be found in the optional implementations of S201A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0256] The handover request message is used to request the second device to configure the sensing receiving beam for the first device.

[0257] In some embodiments, the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and sends a handover request message to the second device.

[0258] S202C, the second device sends the first information to the first device.

[0259] The optional implementations of S202C can be found in the optional implementations of S202A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0260] In some embodiments, the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0261] In some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0262] S203C, the first device determines the first information.

[0263] The optional implementations of S203C can be found in the optional implementations of S203A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0264] In some embodiments, the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and uses a beam scanning method to determine first information. In this case, S201B to S202B can be omitted.

[0265] S204C, the first device determines a first sensing receiving beam for receiving sensing reference signals based on the first information.

[0266] The optional implementations of S204C can be found in the optional implementations of S204A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0267] In some embodiments, the first device determines a first sensing receiving beam for receiving a sensing reference signal based on the location information of the sensing target, including: determining a beam whose main lobe center direction passes through the sensing target as the first sensing receiving beam based on the location information of the sensing target; or determining a candidate sensing receiving beam whose main lobe center direction is closest to the sensing target as the first sensing receiving beam based on the location information of the sensing target.

[0268] S205C, the first device uses a first sensing receiving beam to receive a sensing reference signal sent by the second device.

[0269] In this embodiment of the disclosure, when the first device determines the first sensing receiving beam for receiving the sensing reference signal, it can use the first sensing receiving beam to receive the sensing reference signal sent by the third device.

[0270] In some embodiments, the first device and the second device use a dual-station sensing mode to sense the target, wherein the sensing reference signal sent by the second device is received by the first device after being scattered and / or reflected by the target.

[0271] In some embodiments, the first device is a terminal or an access network device. Optionally, the access network device is a base station.

[0272] In some embodiments, the second device is a terminal or an access network device. Optionally, the access network device is a base station.

[0273] S206C, the first device measures the sensing reference signal and determines the measurement result.

[0274] The optional implementations of S206C can be found in the optional implementations of S206A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0275] S207C, the first device sends the measurement results to the second device.

[0276] The optional implementations of S207C can be found in the optional implementations of S207A in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0277] S208C, the second device determines the sensing transmission beam used to transmit the sensing reference signal based on the measurement results.

[0278] In this embodiment of the disclosure, the second device receives the measurement results sent by the first device and is able to determine the sensing transmission beam used to transmit the sensing reference signal.

[0279] In this embodiment, the second device and the first device employ a dual-station sensing mode for sensing. The second device acts as the transmitter, and the first device as the receiver. The second device receives the measurement results transmitted by the first device and can determine the sensing transmission beam used to transmit the sensing reference signal based on the measurement results. Thus, the second device uses the determined sensing transmission beam to transmit the sensing reference signal, and the first device uses the determined first sensing reception beam to receive the sensing reference signal. This enables accurate sensing of the target and improves the performance of the sensing system.

[0280] For example, as shown in FIG3, the first device is a terminal and the second device is an access network device, wherein the access network device is a sensing transmitter and the terminal is a sensing receiver.

[0281] The access network device transmits M different sensing reference signals (SSBs) through M different sensing transmit beams, each corresponding to a sensing reference signal ID or sensing transmit beam ID {1,…,M}. The terminal receives these sensing reference signals through N sensing receive beams. Based on the sensed measurements, the terminal determines one or more optimal sensing transmit / receive beam pairs, for example, the optimal sensing beam pairs are {Tx#1,Rx#2}, {Tx#2,Rx#1}, and {Tx#2,Rx#2}, and reports the sensing transmit / receive beam pairs and associated multipath information to the access network device. It is worth noting that for a single sensing receiver, only a subset of the transmit / receive beam pairs may be suitable for sensing operations on the target.

[0282] Assume that the sensing beam pair {Tx#1, Rx#2} is suitable for target sensing. In subsequent sensing, when the sensed target moves, the terminal can update the sensing receiving beam for receiving the sensing reference signal based on the target's movement or rotation. For example, if the sensing receiver determines that the current sensing receiving beam cannot accurately sense the target in the environment, one example is that the sensing receiver converts the time-frequency domain channel to the Doppler time delay domain using a 2D-DFT algorithm and measures the energy corresponding to the peak value. When this energy is less than or equal to an energy threshold, it is determined that the sensing receiving beam needs to be switched. This threshold can be obtained through network configuration, access network device configuration, or protocol predefinition, etc. At this point, the sensing receiver needs to switch its sensing receive beam. For example, if there are six sensing receive beams, with the main lobe center directions of receive beams #1 to #6 being 10 degrees, 30 degrees, 50 degrees, 70 degrees, 90 degrees, and 110 degrees respectively, and the sensing target moves from 30 degrees to 45 degrees, the sensing receiver can choose to receive beam #3, or adjust the phase to change the main lobe center direction of the sensing receive beam to 45 degrees. After switching the sensing beam, the sensing receiver can report the new sensing transmit / receive beam pair and associated multipath information to the access network equipment. Based on the information reported by the sensing receiver, the access network equipment can further determine the sensing transmit beam used to transmit the sensing reference signal. This allows for sensing of the target based on the determined sensing transmit / receive beam, improving the sensing accuracy and enhancing the performance of the sensing system.

[0283] The communication methods involved in the embodiments of this disclosure may include at least one of S201C to S208C. For example, S201C can be implemented as an independent embodiment, S202C can be implemented as an independent embodiment, S203C can be implemented as an independent embodiment, S204C can be implemented as an independent embodiment, S205C can be implemented as an independent embodiment, S206C can be implemented as an independent embodiment, S207C can be implemented as an independent embodiment, S208C can be implemented as an independent embodiment, S203C+S204C can be implemented as an independent embodiment, S202C+S203C+S204C can be implemented as an independent embodiment, S201C+S202C+S203C+S204C can be implemented as an independent embodiment, S204C+S205C+S206C+S207C can be implemented as an independent embodiment, and S204C+S205C+S206C+S207C+S208C can be implemented as an independent embodiment, but are not limited thereto.

[0284] In some embodiments, S201C, S202C, S203C, S205C, S206C, S207C, and S208C are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0285] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0286] Figure 4A is an interactive schematic diagram illustrating a beam determination method according to an embodiment of the present disclosure. As shown in Figure 4A, the present disclosure relates to a beam determination method, which includes:

[0287] S401A, the first device determines a first sensing receiving beam for receiving sensing reference signals based on the first information.

[0288] The optional implementation of S401A can be found in the optional implementation of S204A in Figure 2A, as well as other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0289] The optional implementation of S401B can be found in the optional implementation of S204B in Figure 2B and other related parts in the embodiments involved in Figure 2B, which will not be repeated here.

[0290] The optional implementation of S401B can be found in the optional implementation of S204C in Figure 2C, as well as other related parts in the embodiments involved in Figure 2C, which will not be repeated here.

[0291] The first information includes at least one of the following: information indicating that the second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0292] In some embodiments, the method further includes: the first device receiving first information sent by the second device.

[0293] In some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0294] In some embodiments, the method further includes: the first device determines that the currently used second sensing receiving beam is unavailable or about to become unavailable, and sends a handover request message to the second device, wherein the handover request message is used to request the second device to configure a sensing receiving beam for the first device.

[0295] In some embodiments, the method further includes: a first device determining that the currently used second sensing receiving beam is unavailable or about to become unavailable, and using a beam scanning method to determine first information.

[0296] In some embodiments, the first device determines a first sensing receiving beam for receiving a sensing reference signal based on the location information of the sensing target, including: determining a beam whose main lobe center direction passes through the sensing target as the first sensing receiving beam based on the location information of the sensing target; or determining a candidate sensing receiving beam whose main lobe center direction is closest to the sensing target as the first sensing receiving beam based on the location information of the sensing target.

[0297] In some embodiments, the method further includes: a first device receiving a sensing reference signal sent by a first device, a second device, or a third device using a first sensing receiving beam; measuring the sensing reference signal and determining the measurement result; and sending the measurement result to a second device.

[0298] In some embodiments, the method further includes: a first device receiving second information sent by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, and the sensing transmission beam for transmitting the sensing reference signal is determined by the second device based on the measurement results sent by the first device.

[0299] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0300] Figure 4B is an interactive schematic diagram illustrating a beam determination method according to an embodiment of the present disclosure. As shown in Figure 4B, the present disclosure relates to a beam determination method, which includes:

[0301] S401B, the second device sends the first information to the first device.

[0302] The optional implementation of S401B can be found in the optional implementation of S202A in Figure 2A, as well as other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0303] The optional implementation of S401B can be found in the optional implementation of S202B in Figure 2B, as well as other related parts in the embodiments involved in Figure 2B, which will not be repeated here.

[0304] The optional implementation of S401B can be found in the optional implementation of S202C in Figure 2C, as well as other related parts in the embodiments involved in Figure 2C, which will not be repeated here.

[0305] The first information is used by the first device to determine the first sensing receiving beam for receiving the sensing reference signal based on the first information.

[0306] The first information includes at least one of the following: information indicating that the second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0307] In some embodiments, the first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

[0308] In some embodiments, the method further includes: a second device receiving a handover request message sent by a first device, wherein the handover request message is sent by the first device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable, and the handover request message is used to request the second device to configure a sensing receiving beam for the first device.

[0309] In some embodiments, the method further includes: a second device receiving a measurement result sent by a first device, wherein the measurement result is determined by the first device using a first sensing receiving beam to receive a sensing reference signal sent by the first device, the second device, or the third device, and measuring the sensing reference signal.

[0310] In some embodiments, the method further includes: a second device determining a sensing transmission beam for transmitting a sensing reference signal based on the measurement results.

[0311] In some embodiments, the method further includes: the second device sending second information to the first device or the third device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal.

[0312] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0313] Figure 4C is an interactive schematic diagram illustrating a beam determination method according to an embodiment of the present disclosure. As shown in Figure 4C, the present disclosure relates to a beam determination method, which includes:

[0314] S401C, the third device receives the second information sent by the second device.

[0315] The optional implementation of S401C can be found in the optional implementation of S209B in Figure 2B and other related parts in the embodiments involved in Figure 2B, which will not be repeated here.

[0316] The second information is used to indicate the sensing transmission beam used to transmit the sensing reference signal. The sensing transmission beam used to transmit the sensing reference signal is determined by the second device based on the measurement result sent by the first device. The measurement result is determined by the first device using the first sensing reception beam to receive the sensing reference signal and measuring the sensing reference signal. The first sensing reception beam is determined by the first device based on the first information.

[0317] The first information includes at least one of the following: information indicating that the second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving a reference signal or sensing a reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0318] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0319] To facilitate understanding of the embodiments of this disclosure, an exemplary embodiment is provided.

[0320] In an exemplary embodiment, a beam determination method is proposed, specifically a sensing and receiving beam switching method, in which the sensing receiver can determine the sensing and receiving beam by the associated optimal sensing and receiving beam pair or based on the movement or rotation of the sensing target.

[0321] In sensing beam management, a sensing node can configure the transmit beam of a sensing transmitter and the receive beam of an associated sensing receiver. The receive beam of the sensing receiver is used to receive the sensing signals from the transmit beam of the transmitter. The sensing node can be a higher-level node with the capability to process sensing data, such as a sensing management entity or a sensing functional node. Using this method, by configuring the same receive beam for the sensing receivers, the sensing node can control the sensing receivers to simultaneously detect sensing signals from multiple transmit beams from one or more sensing transmitters.

[0322] Sensing and receiving beam determination method:

[0323] Option 1: The sensing receiver uses a sensing receive beam associated with the sensing transmit beam for receiving the sensing reference signal.

[0324] The sensing receiver reports the associated sensing transmit / receive beam pairs to the sensing node:

[0325] The sensing reference signal and the source signal used for sensing beam management satisfy QCL Type D. The sensing receiving beam uses the spatial receiving parameters of the QCL source signal for receiving the sensing reference signal.

[0326] Optionally, when the sensing receiver determines that the current sensing receiving beam is no longer applicable or will become unavailable, it sends a sensing receiving beam switching request to the sensing node. The sensing node determines the new sensing receiving beam based on sensing measurements and configures it to the sensing receiver.

[0327] Optionally, if a sensing node determines, based on the sensing measurements of one or more sensing receivers, that the current sensing receiving beam of a sensing receiver is no longer applicable or will become unavailable, the sensing node determines a new sensing receiving beam and configures it for the sensing receiver.

[0328] Option 2: The sensing receiver determines the sensing receiving beam for receiving the sensing reference signal based on the movement or rotation of the sensing target.

[0329] Specifically, when the sensing receiver determines that the current sensing beam cannot accurately detect, the sensing receiver adjusts the sensing beam to obtain more accurate sensing performance. The sensing beam selection method is as follows:

[0330] Alt1: The sensing receiver uses one of several fixed angles determined during sensing beam scanning to receive the sensing reference signal. Optionally, this angle can be the receiving beam whose angle is closest to the angle obtained from the multipath angle information. Alternatively, the several fixed angles can be configured by the sensing node.

[0331] Alt2: The sensing receiver directly determines the direction of the new sensing receiving beam based on the current position and direction of motion of the sensing target for receiving the sensing reference signal.

[0332] Optionally, when the sensing receiver determines that the current sensing receiving beam is no longer applicable or will become unavailable, it determines a new sensing receiving beam through beam scanning or other means, and reports the corresponding sensing receiving beam and its associated information to the sensing node.

[0333] Example 1

[0334] In the initial downlink sensing scan, as shown in Figure 3, the BS transmits M different sensing reference signals through M different sensing transmit beams, corresponding to sensing reference signal IDs or sensing transmit beam IDs {1,…,M}, respectively. The UE receives these sensing reference signals through N sensing receive beams. The UE determines one or more optimal sensing transmit / receive beam pairs based on sensing measurements, for example, the optimal sensing beam pairs are {Tx#1,Rx#1}, {Tx#2,Rx#1}, and {Tx#2,Rx#2}, and reports the sensing transmit / receive beam pairs and associated multipath information to the sensing node. It is worth noting that for a single sensing receiver, only a portion of the transmit / receive beam pairs may be suitable for sensing the target. In subsequent sensing operations, the sensing node can configure the sensing transmitter to simultaneously transmit sensing reference signals using transmit beams Tx#1 and Tx#2, and configure the sensing receiver to detect the sensing reference signals using the same receive beam Rx#1. Alternatively, the sensing node can be configured to use a time-division multiplexing method to transmit sensing reference signals with transmit beams Tx#1 and Tx#2, and to use a time-division multiplexing method to detect sensing reference signals with receive beams Rx#1 and Rx#2 in sequence.

[0335] Assume the sensing beam pair {Tx#1, Rx#1} is suitable for target sensing. In subsequent sensing, when the target moves, the sensing receiver may determine that the current sensing beam cannot accurately sense the target in the environment. A specific example is that the sensing receiver converts the time-frequency domain channel to the Doppler delay domain using a 2D-DFT algorithm and measures the energy corresponding to the peak value. When this energy is less than or equal to an energy threshold, it is determined that the sensing beam needs to be switched. This threshold can be obtained through network configuration, sensing node configuration, or protocol predefinition. In this case, the sensing receiver needs to switch its sensing beam. The sensing receiver sends a sensing beam switching request to the sensing node, which determines the new sensing beam based on the sensing measurements and configures it for the sensing receiver. After switching the sensing beam, the sensing receiver can report the new sensing beam pair and associated multipath information to the sensing node.

[0336] Example 2

[0337] In the initial downlink sensing scan, as shown in Figure 3, the BS transmits M different sensing reference signals (e.g., SSBs) through M different sensing transmit beams, corresponding to sensing reference signal IDs or sensing transmit beam IDs {1,…,M}, respectively. The UE receives these sensing reference signals through N sensing receive beams. The UE determines one or more optimal sensing transmit / receive beam pairs based on sensing measurements; for example, the optimal sensing beam pairs are {Tx#1,Rx#2}, {Tx#2,Rx#1}, and {Tx#2,Rx#2}, and reports the sensing transmit / receive beam pairs and associated multipath information to the sensing node. It is worth noting that for a single sensing receiver, only a portion of the transmit / receive beam pairs may be suitable for sensing operations on the sensing target.

[0338] Assume the sensing beam pair {Tx#1, Rx#2} is suitable for target sensing. In subsequent sensing, when the sensed target moves, the UE can update the sensing receiving beam for receiving the sensing reference signal based on the target's movement or rotation. For example, if the sensing receiver determines that the current sensing receiving beam cannot accurately sense the target in the environment, a specific example is that the sensing receiver converts the time-frequency domain channel to the Doppler delay domain using a 2D-DFT algorithm and measures the energy corresponding to the peak value. When this energy is less than or equal to an energy threshold, it is determined that the sensing receiving beam needs to be switched. This threshold can be obtained through network configuration, sensing node configuration, or protocol predefinition, etc. At this point, the sensing receiver needs to switch its sensing receiving beam. For example, if there are six sensing receiving beams, with the main lobe center directions of receiving beams #1 to #6 being 10 degrees, 30 degrees, 50 degrees, 70 degrees, 90 degrees, and 110 degrees respectively, and the sensing target moves from 30 degrees to 45 degrees, the sensing receiver can choose to receive from receiving beam #3, or it can adjust the phase to change the main lobe center direction of the sensing receiving beam to 45 degrees. After switching sensing beams, the sensing receiver can report the new sensing transmit / receive beam pair and associated multipath information to the sensing node.

[0339] This disclosure proposes a sensing receiver beam switching method, in which the sensing receiver can determine the sensing receiver beam by associating the optimal sensing transmit and receive beam pair or by determining the movement or rotation of the sensing target, thereby completing the sensing of the sensing target.

[0340] This disclosure proposes a sensing and receiving beam switching method. The sensing receiver can determine the sensing and receiving beam by using the associated optimal sensing and receiving beam pair or by determining the sensing and receiving beam based on the movement or rotation of the sensing target, as well as relevant information on the configuration of the sensing node, to perform sensing and receiving beam switching.

[0341] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0342] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0343] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0344] Figure 5A is a schematic diagram of the structure of the first device proposed in an embodiment of this disclosure. As shown in Figure 5A, the first device 1 may include at least one of a transceiver module 11, a processing module 12, etc.

[0345] In some embodiments, the processing module 12 is configured to determine a first sensing receiving beam for receiving a sensing reference signal based on first information; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; and spatial receiving parameters for receiving the reference signal or sensing the reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0346] Optionally, the transceiver module 11 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first device 1 in any of the above methods (e.g., the communication steps such as sending and / or receiving performed by the first device 1 in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto), which will not be elaborated here. Optionally, the processing module 12 is used to perform at least one of the other steps performed by the first device 1 in any of the above methods (e.g., other steps besides the communication steps such as sending and / or receiving performed by the first device 1 in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto), which will not be elaborated here.

[0347] In some embodiments, the transceiver module may include a sending module and / or a receiving module, which may be separate or integrated together.

[0348] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0349] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0350] Figure 5B is a schematic diagram of the structure of the second device proposed in an embodiment of this disclosure. As shown in Figure 5B, the second device 2 may include at least one of a transceiver module 21, a processing module 22, etc.

[0351] In some embodiments, the transceiver module 21 is configured to send first information to a first device, wherein the first information is used by the first device to determine a first sensing receiving beam for receiving a sensing reference signal; wherein the first information includes at least one of the following: information indicating that a second sensing receiving beam is unavailable, the second sensing receiving beam being different from the first sensing receiving beam; information indicating the first sensing receiving beam; location information of the sensing target; spatial receiving parameters for receiving the reference signal or sensing the reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0352] Optionally, the transceiver module 21 is used to perform at least one of the communication steps such as sending and / or receiving performed by the second device 2 in any of the above methods (e.g., the communication steps such as sending and / or receiving performed by the second device 2 in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto), which will not be elaborated here. Optionally, the processing module 22 is used to perform at least one of the other steps performed by the second device 2 in any of the above methods (e.g., other steps besides the communication steps such as sending and / or receiving performed by the second device 2 in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto), which will not be elaborated here.

[0353] In some embodiments, the transceiver module may include a sending module and / or a receiving module, which may be separate or integrated together.

[0354] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0355] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0356] Figure 5C is a schematic diagram of the structure of the third device proposed in an embodiment of this disclosure. As shown in Figure 5C, the third device 3 may include at least one of a transceiver module 31, a processing module 32, etc.

[0357] In some embodiments, the transceiver module 31 is configured to receive second information sent by the second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal. The sensing transmission beam for transmitting the sensing reference signal is determined by the second device based on the measurement result sent by the first device. The measurement result is determined by the first device using a first sensing reception beam to receive the sensing reference signal sent by the first device, the second device, or the third device, and measuring the sensing reference signal. The first sensing reception beam is determined by the first device based on the first information, wherein the first information includes at least one of the following: information indicating that the second sensing reception beam is unavailable, the second sensing reception beam being different from the first sensing reception beam; information indicating the first sensing reception beam; location information of the sensing target; and spatial reception parameters for receiving the reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

[0358] Optionally, the transceiver module 31 is used to perform at least one of the communication steps such as sending and / or receiving performed by the third device 3 in any of the above methods (e.g., the communication steps such as sending and / or receiving performed by the third device 3 in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto), which will not be elaborated here. Optionally, the processing module 32 is used to perform at least one of the other steps performed by the third device 3 in any of the above methods (e.g., other steps besides the communication steps such as sending and / or receiving performed by the third device 3 in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto), which will not be elaborated here.

[0359] In some embodiments, the transceiver module may include a sending module and / or a receiving module, which may be separate or integrated together.

[0360] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0361] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0362] Figure 6A is a schematic diagram of the structure of the communication device 5100 proposed in an embodiment of this disclosure. The communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0363] As shown in Figure 6A, the communication device 5100 is used to execute any of the above methods. In some embodiments, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 is used to execute any of the above methods. Optionally, one or more processors 5101 are used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0364] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., the sending and / or receiving steps in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, etc., but not limited thereto), and the processor 5101 performs at least one of other steps (e.g., steps other than sending and / or receiving in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, etc., but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated together. Optionally, terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface can be used interchangeably; terms such as transmitter, transmitter unit, transmitter, and transmitter circuit can be used interchangeably; and terms such as receiver, receiver unit, receiver, and receiver circuit can be used interchangeably.

[0365] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data and / or instructions. Optionally, one or more processors 5101 are used to invoke instructions stored in the memory 5103 to cause the communication device 5100 to perform any of the above methods. Optionally, all or part of the memory 5103 may also be located outside the communication device 5100. In an optional embodiment, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5103 and can be used to receive data and / or instructions from the memory 5103 or other devices, and can be used to send data and / or instructions to the memory 5103 or other devices. For example, the interface circuit 5104 can read data and / or instructions stored in the memory 5103 and send the data and / or instructions to the processor 5101.

[0366] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 6A. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0367] Figure 6B is a schematic diagram of the structure of the chip 5200 proposed in an embodiment of this disclosure. For cases where the communication device 5100 can be a chip or a chip system, the schematic diagram of the chip 5200 shown in Figure 6B can be referenced, but is not limited thereto.

[0368] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.

[0369] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data and / or instructions. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, the interface circuit 5202 is connected to the memories 5203, and the interface circuit 5202 can be used to receive data and / or instructions from the memories 5203 or other devices, and the interface circuit 5202 can be used to send data and / or instructions to the memories 5203 or other devices. For example, the interface circuit 5202 can read data and / or instructions stored in the memories 5203 and send the data and / or instructions to the processor 5201.

[0370] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., the sending and / or receiving steps in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto). The interface circuit 5202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 5202 performing data and / or instruction interaction between the processor 5201, chip 5200, memory 5203, or transceiver device. In some embodiments, the processor 5201 performs at least one of other steps (e.g., steps other than sending and / or receiving in S201A-S209A, S201B-S209B, S201C-S208C, S401A, S401B, S401C, but not limited thereto).

[0371] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0372] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0373] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0374] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0375] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0376] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0377] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A beam determination method, characterized in that, The method is performed by a first device and includes: Based on the first information, a first sensing receiving beam is determined for receiving the sensing reference signal; The first information includes at least one of the following: Information used to indicate that a second sensing and receiving beam is unavailable, the second sensing and receiving beam being different from the first sensing and receiving beam; Information used to indicate the first sensing received beam; Perceive the target's location information; Spatial reception parameters for receiving a reference signal or the sensing reference signal, wherein the reference signal and the sensing reference signal satisfy a quasi-co-addressable (QCL) relationship.

2. The method as described in claim 1, characterized in that, The method further includes: Receive the first information sent by the second device.

3. The method as described in claim 2, characterized in that, The first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

4. The method as described in claim 2 or 3, characterized in that, The method further includes: If it is determined that the currently used second sensing receiving beam is unavailable or will soon be unavailable, a handover request message is sent to the second device, wherein the handover request message is used to request the second device to configure the first sensing receiving beam for the first device.

5. The method as described in claim 1, characterized in that, The step of determining the first sensing receiving beam for receiving the sensing reference signal based on the first information includes: If it is determined that the currently used second sensing and receiving beam is unavailable or about to become unavailable, the first sensing and receiving beam is determined based on the first information.

6. The method according to any one of claims 1 to 5, characterized in that, The step of determining the first sensing receiving beam for receiving the sensing reference signal based on the location information of the sensing target includes: Based on the location information of the sensing target, the beam whose main lobe center passes through the sensing target is determined as the first sensing receiving beam; or Based on the location information of the sensing target, the candidate sensing receiving beam that is closest to the sensing target in the direction of the main lobe center is determined as the first sensing receiving beam.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The sensing reference signal transmitted by the first sensing receiving beam is received using the first sensing receiving beam; wherein the third device is different from the first device and the second device. The sensing reference signal is measured, and the measurement result is determined; The measurement results are sent to the second device.

8. The method as described in claim 7, characterized in that, The method further includes: The second device receives second information, wherein the second information is used to indicate a sensing transmission beam for transmitting the sensing reference signal, the sensing transmission beam being determined by the second device based on the measurement results transmitted by the first device.

9. A beam determination method, characterized in that, The method is performed by a second device and includes: Send first information to a first device, wherein the first information is used by the first device to determine a first sensing receiving beam for receiving a sensing reference signal based on the first information; The first information includes at least one of the following: Information used to indicate that a second sensing and receiving beam is unavailable, the second sensing and receiving beam being different from the first sensing and receiving beam; Information used to indicate the first sensing received beam; Perceive the target's location information; Spatial reception parameters for receiving a reference signal or the sensing reference signal, wherein the reference signal and the sensing reference signal satisfy a QCL relationship.

10. The method as described in claim 9, characterized in that, The first information is sent by the second device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable.

11. The method as described in claim 9 or 10, characterized in that, The method further includes: The device receives a handover request message sent by the first device, wherein the handover request message is sent by the first device when it determines that the second sensing receiving beam currently used by the first device is unavailable or about to become unavailable, and the handover request message is used to request the second device to configure the first sensing receiving beam for the first device.

12. The method according to any one of claims 9 to 11, characterized in that, The method further includes: The device receives measurement results sent by the first device, wherein the measurement results are determined by the first device using the first sensing receiving beam to receive sensing reference signals sent by the first device, the second device, or the third device, and measuring the sensing reference signals.

13. The method as described in claim 12, characterized in that, The method further includes: Based on the measurement results, a sensing transmission beam for transmitting the sensing reference signal is determined.

14. The method as described in claim 13, characterized in that, The method further includes: Send second information to the first device or the third device, wherein the second information is used to indicate the sensing transmission beam for transmitting the sensing reference signal.

15. A beam determination method, characterized in that, The method is performed by a third device and includes: The system receives second information sent by a second device, wherein the second information is used to indicate a sensing transmission beam for transmitting a sensing reference signal, the sensing transmission beam for transmitting the sensing reference signal being determined by the second device based on measurement results sent by a first device, the measurement results being determined by the first device using a first sensing reception beam to receive the sensing reference signal sent by the third device and measuring the sensing reference signal, the first sensing reception beam being determined by the first device based on the first information. The first information includes at least one of the following: Information used to indicate that a second sensing and receiving beam is unavailable, the second sensing and receiving beam being different from the first sensing and receiving beam; Information used to indicate the first sensing received beam; Perceive the target's location information; Spatial reception parameters for receiving a reference signal or the sensing reference signal, wherein the sensing reference signal and the reference signal satisfy a QCL relationship.

16. A communication device, characterized in that, The communication device is used to perform the method according to any one of claims 1 to 8, 9 to 14, and 15.

17. A communication system, characterized in that, The device includes a first device, a second device, and a third device, wherein the first device is configured to implement the method of any one of claims 1 to 8, the second device is configured to implement the method of any one of claims 9 to 14, and the third device is configured to implement the method of claim 15.

18. A storage medium storing instructions, characterized in that, When the instructions are executed on a communication device, the communication device performs the method as described in any one of claims 1 to 8, 9 to 14, and 15.

19. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by a communication device, it implements the method described in any one of claims 1 to 8, 9 to 14, and 15.

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