Beam management method and device, communication equipment and readable storage medium

Abstract

The invention discloses a beam management method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication, and the beam management method comprises the steps that first equipment sends a first signal to K pieces of second equipment through the mth sending beam in M sending beams; wherein the first signal is used for the K second devices to generate K second signals and send the K second signals to a third device, and the third device receives the K second signals sent by the K second devices through the nth receiving beam in N receiving beams and measures the K second signals; 1 < = m < = M, M is an integer greater than or equal to 1, and K is an integer greater than 1; 1 < = n < = N, and N is an integer greater than or equal to 1.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method, apparatus, communication device, and readable storage medium for beam management. Background Art

[0002] In related technologies, for beam management, usually only the beam management between a single terminal and a base station is considered, and the base station sends a reference signal, while the terminal measures the reference signal and reports the measurement information to implement beam management. However, in the scenario of multi-node backscatter communication, including the bistatic backscatter communication scenario, a beam usually covers multiple tag devices, and the measured signal quality is also a statistical value of the backscatter signal quality from multiple tag devices, rather than the signal quality statistical value of the backscatter signal of a single tag device. At the same time, general tag devices do not have the capabilities of signal measurement and signal reporting. In addition, in multi-node backscatter communication, there are two links, namely, from the excitation source device / control device to the tag device and from the tag device to the receiving device. Therefore, its beam management involves the signaling processes among three devices: the excitation source device / control device, the tag device, and the receiving device. In this case, how to implement beam management in multi-node backscatter communication when a single beam covers multiple devices without signal measurement and signal reporting capabilities is an urgent problem to be solved currently. Summary of the Invention

[0003] Embodiments of this application provide a method, apparatus, communication device, and readable storage medium for beam management, which can solve the problem of how to implement beam management in multi-node backscatter communication when a single beam covers multiple devices without signal measurement and signal reporting capabilities.

[0004] In a first aspect, a method for beam management is provided, which is executed by a first device. The method includes:

[0005] The first device sends a first signal to K second devices respectively through the m-th sending beam among M sending beams;

[0006] wherein, the first signal is used for the K second devices to generate K second signals and send the K second signals to a third device, and the third device receives the K second signals sent by the K second devices respectively through the n-th receiving beam among N receiving beams and measures the K second signals; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

[0007] In a second aspect, a method for beam management is provided, which is executed by a second device. The method includes:

[0008] The second device receives the first signal sent by the first device through the m-th transmission beam among the M transmission beams; wherein, the second device is one of the K second devices, and the first signal is sent by the first device through the m-th transmission beam to the K second devices respectively, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0009] The second device generates a second signal according to the first signal;

[0010] The second device sends the second signal to a third device; wherein, the second signal is used for the third device to measure the K second signals after receiving the K second signals sent by the K second devices respectively through the n-th receiving beam among the N receiving beams; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

[0011] In a third aspect, a beam management method is provided, which is executed by a third device. The method includes:

[0012] The third device receives the K second signals sent by the K second devices respectively through the n-th receiving beam among the N receiving beams; wherein, the K second signals are generated according to a first signal, and the first signal is sent by the first device through the m-th transmission beam among the M transmission beams to the K second devices respectively; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, N is an integer greater than or equal to 1;

[0013] The third device measures the K second signals.

[0014] In a fourth aspect, a beam management apparatus is provided, which is applied to a first device and includes:

[0015] A first transmission module, configured to send a first signal to K second devices respectively through the m-th transmission beam among the M transmission beams; wherein, the first signal is used for the K second devices to generate K second signals and send the K second signals to a third device, and the third device receives the K second signals sent by the K second devices respectively through the n-th receiving beam among the N receiving beams and measures the K second signals; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

[0016] In a fifth aspect, a beam management apparatus is provided, which is applied to a second device and includes:

[0017] A third receiving module, configured to receive a first signal sent by a first device via the m-th transmitting beam among M transmitting beams; wherein, the apparatus for beam management is applied to one of K second devices, the first signal is sent by the first device via the m-th transmitting beam to the K second devices respectively, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0018] A generating module, configured to generate a second signal according to the first signal;

[0019] A fifth transmitting module, configured to send the second signal to a third device; wherein, the second signal is used for the third device to measure the K second signals after receiving the K second signals sent by the K second devices via the n-th receiving beam among N receiving beams respectively; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

[0020] In a sixth aspect, there is provided an apparatus for beam management, applied to a third device, including:

[0021] A fifth receiving module, configured to receive the K second signals sent by the K second devices via the n-th receiving beam among N receiving beams respectively; wherein, the K second signals are generated according to a first signal, and the first signal is sent by a first device via the m-th transmitting beam among M transmitting beams to the K second devices respectively; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, N is an integer greater than or equal to 1;

[0022] A measuring module, configured to measure the K second signals.

[0023] In a seventh aspect, there is provided a communication device, which includes a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the method described in the first aspect, or implements the steps of the method described in the second aspect, or implements the steps of the method described in the third aspect.

[0024] In an eighth aspect, a communication device is provided, including a processor and a communication interface. When the communication device is a first device, the communication interface is configured to respectively send a first signal to K second devices through the m-th transmission beam among M transmission beams, where the first signal is used for the K second devices to generate K second signals and send the K second signals to a third device, and the third device is configured to respectively receive the K second signals sent by the K second devices through the n-th reception beam among N reception beams and measure the K second signals; or when the communication device is one of the K second devices, the communication interface is configured to receive the first signal sent by the first device through the m-th transmission beam among M transmission beams, the processor is configured to generate a second signal according to the first signal, and the communication interface is further configured to send the second signal to the third device; or when the communication device is the third device, the communication interface is configured to respectively receive the K second signals sent by the K second devices through the n-th reception beam among N reception beams, where the K second signals are generated according to the first signal, and the first signal is sent by the first device to the K second devices respectively through the m-th transmission beam among M transmission beams, and the processor is configured to measure the K second signals; 1 ≤ m ≤ M, where M is an integer greater than or equal to 1, and K is an integer greater than 1; 1 ≤ n ≤ N, where N is an integer greater than or equal to 1.

[0025] In a ninth aspect, a readable storage medium is provided, on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect are implemented.

[0026] In a tenth aspect, a wireless communication system is provided, including: a first device, a second device, and a third device. The first device can be used to execute the steps of the method described in the first aspect, the second device can be used to execute the steps of the method described in the second aspect, and the third device can be used to execute the steps of the method described in the third aspect.

[0027] In an eleventh aspect, a chip is provided, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0028] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0029] Through the solution of the embodiments of the present application, beam management (such as beam measurement, beam training, etc.) can be realized under the condition that a single beam covers multiple devices (such as tag devices) that do not have the ability of signal measurement and signal reporting. For example, beam management in bistatic backscatter communication can be realized, so as to meet the transmission distance and efficiency requirements during the transmission of these multiple devices (such as tag devices). Description of the Drawings

[0030] Figure 1 is a flowchart of a method for beam management provided by an embodiment of the present application;

[0031] Figure 2 is a flowchart of another method for beam management provided by an embodiment of the present application;

[0032] Figure 3 is a flowchart of another method for beam management provided by an embodiment of the present application;

[0033] Figure 4A is one of the schematic diagrams of the applicable scenarios in the first embodiment of the present application;

[0034] Figure 4B is the second schematic diagram of the applicable scenarios in the first embodiment of the present application;

[0035] Figure 5 is a schematic structural diagram of a device for beam management provided by an embodiment of the present application;

[0036] Figure 6 is a schematic structural diagram of another device for beam management provided by an embodiment of the present application;

[0037] Figure 7 is a schematic structural diagram of another device for beam management provided by an embodiment of the present application;

[0038] Figure 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application. Detailed Embodiments

[0039] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0040] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0041] The term "indicate" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the recipient of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the recipient determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0042] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably. The described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0043] To facilitate the understanding of the embodiments of this application, the following content is first described.

[0044] Backscatter Communication (BSC) refers to the fact that backscatter communication devices use radio frequency signals in other devices or the environment for signal modulation to transmit their own information, and it is a relatively typical passive Internet of Things device. The basic constituent modules and main functions of the backscatter communication transmitter include:

[0045] - Antenna unit: It is used to receive radio frequency signals and control commands, and is also used to transmit modulated backscatter signals.

[0046] - Energy harvesting module or power supply module: This module is used for the backscatter communication device to perform radio frequency energy harvesting, or other energy harvesting, including but not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc. In addition to including an energy harvesting module, it may also include a battery power supply module. In this case, the backscatter communication device is a semi-passive device. The energy harvesting module or power supply module supplies power to all other modules in the device.

[0047] - Microcontroller: It includes controlling baseband signal processing, energy storage or data scheduling status, switching, system synchronization, etc.

[0048] - Signal receiving module: It is used to demodulate control commands or data sent by the backscatter communication receiving end or other network nodes.

[0049] - Encoding and modulation module: Under the control of the controller, it performs channel encoding and signal modulation, and realizes modulation by selecting different load impedances through a selection switch under the control of the controller.

[0050] - Memory or sensing module: It is used to store the identification ID information, location information or sensing data of the device.

[0051] In addition to the above typical constituent modules, the future backscatter communication transmitter can also integrate a tunnel diode amplifier module, a low-noise amplifier module, etc., to improve the receiving sensitivity and transmission power of the transmitter.

[0052] Optionally, the basic constituent modules and main functions of the backscatter communication receiver include:

[0053] - Antenna unit: It is used to receive the modulated backscatter signal.

[0054] - Backscatter signal detection module: It is used to detect the backscatter signal sent by the backscatter communication transmitter, including but not limited to ASK detection, PSK detection, FSK detection or QAM detection, etc.

[0055] - Demodulation and decoding module: It demodulates and decodes the detected signal to restore the original information stream.

[0056] The backscatter communication device controls the reflection coefficient Γ of the modulation circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. The reflection coefficient Γ can be characterized as:

[0057]

[0058] where Z0 is the antenna characteristic impedance; Z1 is the load impedance; j represents a complex number, and θ T represents the phase. Assuming the incident signal is represented as S in (t), then the output signal is Therefore, by reasonably controlling the reflection coefficient, corresponding amplitude modulation, frequency modulation, or phase modulation can be achieved. Based on this, the backscatter communication device can be a Tag in traditional Radio Frequency Identification (RFID), or a passive or semi-passive Internet of Things (IoT) device. Here, the backscatter communication device can be collectively referred to as a BSC device.

[0059] In one implementation, according to the tag capabilities and the sources of capabilities, tags can be classified into:

[0060] - C1 / C2 tags: Passive tags, which obtain energy from the electromagnetic waves sent by the received RFID reader / writer and can only send data outward in the way of backscatter communication;

[0061] - C3 tags: Semi-passive tags. The energy sources such as the tag's own battery only provide power for the circuits in the RFID tag and do not actively send data signals outward. After being activated by the electromagnetic waves sent by the RFID reader / writer, it can send data outward in the way of backscatter communication;

[0062] - C4 tags: Active tags, which rely on energy sources such as their own installed batteries to actively send data outward.

[0063] In another implementation, tags can be classified into:

[0064] - Device A: The tag is a passive tag without a storage capacitor / battery, relying on Radio Frequency (RF) signals for power supply. The received RF signal is the power supply signal of the rectifier, without the ability to generate a carrier, and relying on RF as the radio frequency carrier for backscatter communication transmission, with the lowest power consumption;

[0065] - Device B: The tag is a semi-passive tag with a storage capacitor / battery, relying on non-RF signals for power supply. Optionally, it has a PA / LNA or other active devices, without the ability to generate a carrier, and relying on RF as the radio frequency carrier for backscatter communication transmission, with the second lowest power consumption;

[0066] - Device C: The tag is an active tag with a storage capacitor / battery, relying on non-RF signals for power supply, with the ability to generate a carrier, and the highest power consumption.

[0067] Optionally, the solutions in this application can be applied to LTE systems, 5G NR systems, and NR evolved systems, such as 6G systems and 6G evolved systems, as well as IEEE 802.11 systems (such as WiFi systems), Bluetooth systems, LoRa systems, Zigbee systems, wireless optical communication systems, low-power communication systems, backscatter communication systems, etc.

[0068] Next, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, the beam management methods, apparatuses, communication devices, and readable storage media provided by the embodiments of this application will be described in detail.

[0069] Please refer to Figure 1 , Figure 1 which is a flowchart of a beam management method provided by an embodiment of this application. This method is executed by a first device. As Figure 1 shown, this method includes the following steps:

[0070] Step 11: The first device sends a first signal to K second devices respectively through the m-th transmission beam among M transmission beams.

[0071] In the embodiments of this application, the first signal is used for K second devices to generate K second signals and send the K second signals to a third device. The third device receives the K second signals sent by the K second devices respectively through the n-th receiving beam among N receiving beams and measures the K second signals. 1 ≤ m ≤ M, where M is an integer greater than or equal to 1, and K is an integer greater than 1; 1 ≤ n ≤ N, where N is an integer greater than or equal to 1.

[0072] The second device can be optionally a tag device, such as a passive tag (i.e., Device A), a semi-passive tag (i.e., Device B), or an active tag (i.e., Device C).

[0073] In an optional implementation, the first device is a device with scheduling or configuration functions, and the third device is a device scheduled or controlled by the first device. For example, the first device is an access network device such as a base station, an Integrated Access and Backhaul (IAB) device, a relay device, or a repeater, and the third device is a terminal device; or, the first device is an access network device such as a base station, and the third device is an access network device such as an IAB device, a relay device, or a repeater, a terminal device, etc.; or, the first device is a main UE device with scheduling or configuration functions, and the third device is a slave UE device, etc.

[0074] In another alternative embodiment, the third device is a device with scheduling or configuration functions, and the first device is a device scheduled or controlled by the third device. For example, the third device is an access network device such as a base station, an IAB device, a relay device, or a repeater, and the first device is a terminal device; or, the third device is an access network device such as a base station, and the first device is an access network device such as an IAB device, a relay device, or a repeater, a terminal device, etc.; or, the third device is a master UE device with scheduling or configuration functions, and the first device is a slave UE device, etc.

[0075] Optionally, the K second devices may belong to a single device group and perform the same operations; or they may belong to different device groups. For example, multiple transmitting second devices and multiple receiving second devices belong to different device groups to simplify scheduling operations. For example, if the number of second devices (such as Device C) is relatively large, that is, the value of K is large, multiple second devices can send information while multiple other second devices receive information.

[0076] In the solution of the embodiment of the present application, by respectively sending a first signal to the K second devices through the m-th transmitting beam among the M transmitting beams, generating K second signals according to the first signal, and respectively receiving the K second signals sent by the K second devices through the n-th receiving beam among the N receiving beams, and measuring the K second signals, beam management (such as beam measurement, beam training, etc.) can be realized under the condition that a single beam covers multiple devices (such as tag devices) that do not have the ability to measure and report signals. For example, beam management in multi-node backscatter communication (including bistatic backscatter communication) can be realized, so as to meet the transmission distance and efficiency requirements during the transmission of these multiple devices (such as tag devices).

[0077] Optionally, the time domain resources of the first signal corresponding to the m-th transmitting beam are the same, or within the first time window, the time domain resources and frequency domain resources of the first signal corresponding to the m-th transmitting beam belong to the same resource set, that is, if the time domain resources of the first signal corresponding to the m-th transmitting beam are different, then within a certain time window, the time domain resources and frequency domain resources of the first signal corresponding to the m-th transmitting beam belong to the same resource set to improve the accuracy and timeliness of beam management. The first time window can be preset based on actual requirements, and no limitation is imposed thereon.

[0078] Optionally, there is an association relationship between the time-frequency resources of the K second signals and the time-frequency resources of the first signal. For example, the time for sending the first signal and the time for receiving the second signal are within a specified time window to improve the accuracy and timeliness of beam management.

[0079] Optionally, the generation method of the second signal includes at least one of the following:

[0080] Obtained by reflecting the first signal according to the configured reflection coefficient; that is, a signal obtained by reflecting the first signal without any modulation with the configured reflection coefficient. At this time, the frequency-domain resources of the second signal are the same as those of the first signal, and the time when the first device sends the first signal and the time when the third device receives the second signal are within a specified time window. At this time, the first signal is a reference signal for downlink beam training, and the second signal is mainly used for downlink beam training. At this time, the downlink refers to the communication link from the first device to one or more second devices;

[0081] Obtained by performing all-ones backscatter modulation on the first signal; a backscatter signal obtained by performing all-ones modulation with the first signal as the radio frequency carrier signal. At this time, the frequency-domain resources of the second signal are the same as those of the first signal, and the time when the first device sends the first signal and the time when the third device receives the second signal are within a specified time window. This all-ones backscatter modulation can be understood as performing backscatter modulation on the first signal based on an all-ones baseband signal, and the second signal is the first signal. At this time, the first signal is a reference signal for downlink beam training, and the second signal is mainly used for downlink beam training. At this time, the downlink refers to the communication link from the first device to one or more second devices;

[0082] Using the first signal as the radio frequency carrier signal, and obtained by performing backscatter modulation and resource mapping on the first signal according to the time-frequency resource configuration of the second signal. At this time, the first signal is the radio frequency carrier signal of the second signal, and the second signal is the backscatter modulation signal of the first signal. The frequency-domain resources of the second signal are the single-sideband or double-sideband frequency shift of the frequency-domain resources of the first signal in the frequency domain, and the time when the first device sends the first signal and the time when the third device receives the second signal are within a specified time window. At this time, the second signal is mainly used for uplink beam training. At this time, the uplink refers to the communication link from one or more second devices to the third device;

[0083] Using the first signal as the control signal, and obtained by performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal. At this time, the first signal is the control signal of the second signal; the first signal carries indication information for the second device to determine the signal parameters of the second signal.

[0084] Optionally, the first signal may be, but is not limited to, at least one of the following:

[0085] Beam training reference signal;

[0086] A signal for providing a radio frequency carrier, and at this time the second signal is a reference signal;

[0087] A control signal, i.e., a signal that controls or instructs a second device to generate a second signal.

[0088] Optionally, the beam training reference signal includes, but is not limited to, at least one of the following:

[0089] Synchronization Signal Block (SSB) signal;

[0090] Sounding Reference Signal (SRS);

[0091] Channel State Information Reference Signal (CSI-RS);

[0092] Phase-tracking Reference Signal (TRS);

[0093] Positioning Reference Signal (PRS);

[0094] Layer 1 (L1) reference signal, such as other L1 reference signals other than the above-mentioned reference signals.

[0095] Optionally, the method for beam management in this embodiment may further include:

[0096] The first device sends first information to the K second devices; wherein, the first information is used to configure the signal parameters of the same first signal and the signal parameters of the same second signal for the K second devices when the second signal is the reflected amplified signal of the first signal; or, the first information is used to configure the signal parameters of the same first signal and the signal parameters of the same or different second signals for the K second devices when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal. In this way, the second device can accurately transmit and receive signals.

[0097] Optionally, when the second signal is the reflected amplified signal of the first signal, the signal parameters of the first signal include, but are not limited to, at least one of the following:

[0098] The time-domain correlation information of the first signal, such as including that the transmission of the first signal is periodic, semi-periodic or aperiodic, and the signal length of the first signal, etc.;

[0099] Frequency-domain related information of the first signal, such as including bandwidth, center frequency, frequency points, frequency bands, frequency hopping sequences, Comb size, frequency-domain resource patterns, etc.;

[0100] Code-domain related information of the first signal, such as including Orthogonal Cover Code (OCC) sequences or OCC structures, etc.;

[0101] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0102] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0103] The power of the first signal.

[0104] Optionally, when the second signal is a reflected and amplified signal of the first signal, the signal parameters of the second signal include but are not limited to at least one of the following:

[0105] The reflection coefficient or transmission power of the second signal;

[0106] The preamble of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates the corresponding second signal;

[0107] The synchronization sequence of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates the corresponding second signal;

[0108] The scrambling code of the second signal, which is used for scrambling and is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates the corresponding second signal;

[0109] The device identifier corresponding to the second signal (such as Tag ID or EPC code, etc.).

[0110] Optionally, when the second signal is a backscatter modulation signal of the first signal, or the first signal is a control signal of the second signal, the signal parameters of the first signal include but are not limited to at least one of the following:

[0111] Time-domain related information of the first signal, such as including whether the transmission of the first signal is periodic, semi-periodic or aperiodic, and the signal length of the first signal, etc.;

[0112] Frequency domain related information of the first signal, such as including bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, Comb size, frequency domain resource pattern, etc.;

[0113] Code domain related information of the first signal, such as including OCC sequence or OCC structure, etc.;

[0114] Type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0115] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0116] Power of the first signal.

[0117] Optionally, when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the signal parameters of the second signal include but are not limited to at least one of the following:

[0118] Reflection coefficient or transmission power of the second signal;

[0119] Preamble of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.) to enable the second device to generate the corresponding second signal;

[0120] Synchronization sequence of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.) to enable the second device to generate the corresponding second signal;

[0121] Scrambling code of the second signal, which is used for scrambling and is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.) to enable the second device to generate the corresponding second signal;

[0122] Device identifier corresponding to the second signal (such as Tag ID or EPC code, etc.);

[0123] Time domain related information of the second signal, such as including whether the transmission of the second signal is periodic, semi-periodic or aperiodic, and the signal length of the second signal, etc.;

[0124] Frequency domain related information of the second signal, such as including bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, Comb size, frequency domain resource pattern, etc.;

[0125] Code domain related information of the second signal, such as including OCC sequence or OCC structure, etc.;

[0126] Type of the second signal;

[0127] At least one of the modulation method, coding method, signal waveform, and sequence generation method of the second signal.

[0128] For example, when the first signal is a control signal of the second signal, the first signal may carry indication information for the second device to determine the signal parameters of the second signal (as described above), so that the second device can determine the signal parameters of the second signal based on the indication information.

[0129] In the embodiments of the present application, a first device (such as a device with scheduling function) may select appropriate transceiver beams according to the signal measurement results of a third device. The above beam management method may further include:

[0130] The first device receives beam report information sent by the third device; the beam report information includes at least one of the following:

[0131] A resource indicator (Resource Indicator) for indicating the time-frequency domain resources of the first signal or the second signal;

[0132] Measurement values of the second signal corresponding to L beam-pairs, or difference values between the measurement values of the second signal corresponding to L beam-pairs and the maximum or minimum measurement values; the L is related to the M or the N, that is, the reported L beam-pairs are determined based on M transmit beams or N receive beams used for beam training, or the L is related to the size of the reported resource set, that is, the reported L beam-pairs are determined based on the size of the reported resource set; for example, when reporting the beam report information, the resource indicator corresponds to the measurement value of the second signal corresponding to the L beam-pairs or the difference value between it and the maximum or minimum measurement values;

[0133] Device identifiers of the K second devices; for example, when reporting the beam report information, the device identifier is associated with the measurement value of the second signal or the difference value between it and the maximum or minimum measurement values;

[0134] Resource set identifier of measurement resources, which can be used in a multi-Transmission Receiving Point (TRP) scenario. For example, in a CSI report setting, beam / CSI measurements and reports of multiple TRPs can be configured. The channel measurement resources (CMRs) associated with the CSI report are configured through the high-layer parameter CSIResource Setting, and the CSI resource setting includes at least two CSI resource sets (i.e., CMR sets), each of which corresponds to a different TRP.

[0135] Index representing a set of device capability values (such as UE Capability Value Set), which can be used for beam reporting in a multi-panel device. For example, when a third device reports capability information, it can report a set of UE capability value sets, and each set includes at least the maximum number of SRS ports supported by the set. After beam measurement, the third device determines the UE capability value set corresponding to each reported CSI-RS and / or SSB resource index (such as SSB resource index) based on the measurement results, and reports this correspondence to the first device through a beam report (such as beam report). Therefore, an index for representing the UE capability value set is added to the beam report format.

[0136] Capability information of the third device, including but not limited to whether the third device supports refined receive (Rx) / transmit (Tx) beams and whether it supports multi-panel simultaneous reporting.

[0137] Relevant information indicating the beam range.

[0138] Semi-persistent Channel State Information (CSI) reporting configuration identifier, which can be used to indicate the first device to activate the corresponding semi-persistent CSI reporting, thereby saving the Downlink Control Information (DCI) for deactivating the semi-persistent CSI reporting.

[0139] Optionally, the above beam management method may further include:

[0140] The first device determines the parameters of the first transmission beam of the first device or the parameters of the first reception beam of the third device according to the beam report information. Among them, the first transmission beam may be the transmission beam with the best quality or the most stable signal statistical value selected from the M transmission beams. The first reception beam may be the reception beam with the best quality or the most stable signal statistical value selected from the N reception beams. For example, the first device may only determine the parameters of the first transmission beam, or only determine the parameters of the first reception beam, or the parameters of the first transmission beam and the first reception beam of the first device. Thus, the transmission beam and the reception beam for subsequent transceiver can be obtained.

[0141] Optionally, the parameters of the first transmission beam or the first reception beam include but are not limited to at least one of the following:

[0142] The width of the first transmission beam or the first reception beam;

[0143] The radiation direction of the first transmission beam or the first reception beam;

[0144] The power of the first transmission beam or the first reception beam;

[0145] The index of the first transmission beam or the first reception beam;

[0146] The precoding matrix indicator (PMI) of the first transmission beam or the first reception beam;

[0147] The duty cycle of the first transmission beam or the first reception beam;

[0148] The number of transmission antennas of the first transmission beam, or the number of reception antennas of the first reception beam;

[0149] The index of the transmission antennas of the first transmission beam, or the index of the reception antennas of the first reception beam.

[0150] Optionally, the above beam management method may further include:

[0151] The first device sends second information to the third device according to the beam report information; wherein, the second information is used to configure or indicate the Transmission Configuration Indicator (TCI) status information of the third device, so that the third device obtains a receiving beam for subsequent reception. For example, after obtaining the beam report information, the first device may configure or indicate the corresponding TCI status information to the third device according to the parameters of the determined first receiving beam; or, after obtaining the beam report information, determine the parameters of the first receiving beam and configure or indicate the corresponding TCI status information to the third device.

[0152] Optionally, the sending of the second information to the third device may include:

[0153] The first device sends the second information to the third device through at least one of the following:

[0154] Radio Resource Control (RRC) signaling;

[0155] Medium Access Control Control Element (MAC CE);

[0156] Downlink Control Information (DCI);

[0157] Sidelink Control Information (SCI);

[0158] Layer 1 signaling.

[0159] Optionally, the first device configuring or indicating the TCI status information to the third device may include at least one of the following:

[0160] (a) RRC configuration: That is, directly configure an information unit containing Quasi Co-Location (QCL) information by high-layer RRC signaling and configure it for the third device;

[0161] (b) RRC configuration, and indication by DCI, SCI or L1 signaling: Configure a group of TCI states and corresponding trigger states by high-layer RRC signaling, one trigger state corresponding to one TCI state; then dynamically indicate one of the trigger states and the corresponding TCI state as the QCL reference signal of the target reference signal through DCI, SCI or L1 signaling;

[0162] (c) RRC configuration and MAC CE activation: Configure a set of TCI states by high-layer RRC signaling. Each TCI state can determine the corresponding QCL reference, and then select one TCI state from them through MAC CE for activation as the QCL reference of the target reference signal.

[0163] (d) RRC configuration, MAC CE activation, and DCI, SCI, or L1 signaling indication: Configure S TCI states by high-layer RRC signaling, then select at most P (P ≤ S) TCI states through MAC CE, and select one from the P TCI states for indication through DCI, SCI, or L1 signaling.

[0164] It should be noted that, in addition to the above methods, the TCI state information can also be configured or indicated based on other combinations of RRC, DCI, MAC CE, SCI, and L1 signaling, which is not limited herein.

[0165] Optionally, the beam management method in the embodiments of this application may further include:

[0166] The first device sends third information to the third device; wherein, the third information includes at least one of the following: measurement configuration information for beam measurement, and reporting configuration information for reporting beam reporting information; the reporting configuration information is associated with the measurement configuration information. For example, the measurement configuration information may include one or more measurement resource sets, and the reporting configuration information may include one or more reporting resource sets. At least one of the one or more measurement resource sets may be explicitly or implicitly configured by the first device to the third device, or determined by the third device itself according to protocol agreements, preset settings, etc.

[0167] Thereby, the third device can perform beam measurement based on the measurement configuration information and report beam reporting information based on the reporting configuration information.

[0168] In the embodiments of this application, the third device (such as a device with scheduling function) can determine appropriate transmit and receive beams according to its signal measurement results. The above beam management method may further include:

[0169] The first device receives the fourth information sent by the third device; wherein, the fourth information is used to configure or indicate the TCI status information of the first device. For example, after the third device measures the second signal, it configures or indicates the TCI status information to the first device, so that the first device can obtain the transmission beam for subsequent transmission. For the manner in which the third device configures or indicates the TCI status information, reference may be made to the above content, such as configuring or indicating the TCI status information based on various combinations of RRC, DCI, MAC CE, SCI, and L1 signaling.

[0170] Please refer to Figure 2 , Figure 2 is a flowchart of a beam management method provided by an embodiment of the present application. This method is executed by a second device, such as Figure 2 shown, the method includes the following steps:

[0171] Step 21: The second device receives the first signal sent by the first device through the m-th transmission beam among the M transmission beams; the second device is one of the K second devices, and the first signal is sent by the first device through the m-th transmission beam to the K second devices respectively, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0172] Step 22: The second device generates a second signal according to the first signal;

[0173] Step 23: The second device sends the second signal to the third device; the second signal is used for the third device to measure the K second signals after receiving the K second signals sent by the K second devices respectively through the n-th receiving beam among the N receiving beams; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

[0174] In an embodiment of the present application, the second device may be a tag device, such as a passive tag (i.e., Device A), a semi-passive tag (i.e., Device B), or an active tag (i.e., Device C).

[0175] In an optional implementation manner, the first device is a device with scheduling or configuration function, and the third device is a device scheduled or controlled by the first device. For example, the first device is an access network device such as a base station, an IAB device, a relay device, or a repeater, and the third device is a terminal device; or, the first device is an access network device such as a base station, and the third device is an IAB device, a relay device, a repeater, a terminal device, etc.; or, the first device is a main UE device with scheduling or configuration function, and the third device is a slave UE device, etc.

[0176] In another alternative embodiment, the third device is a device with scheduling or configuration functions, and the first device is a device scheduled or controlled by the third device. For example, the third device is an access network device such as a base station, an IAB device, a relay device, or a repeater, and the first device is a terminal device; or, the third device is an access network device such as a base station, and the first device is an IAB, a relay device, a repeater, a terminal device, etc.; or, the third device is a master UE device with scheduling or configuration functions, and the first device is a slave UE device, etc.

[0177] Optionally, the K second devices may belong to a single device group and perform the same operations; or they may belong to different device groups. For example, multiple transmitting second devices and multiple receiving second devices belong to different device groups to simplify the scheduling operation. For example, if the number of second devices (such as Device C) is relatively large, that is, the K value is large, multiple second devices can send information while multiple other second devices receive information.

[0178] In the solution of the embodiment of the present application, by using the m-th transmitting beam among the M transmitting beams to respectively send a first signal to the K second devices, generating K second signals according to the first signal, and using the n-th receiving beam among the N receiving beams to respectively receive the K second signals sent by the K second devices and measuring the K second signals, it is possible to achieve beam management (such as beam measurement, beam training, etc.) in multi-node backscatter communication (including bistatic backscatter communication) when a single beam covers multiple devices (such as tag devices) that do not have the ability to measure signals and report signals. For example, beam management in multi-node backscatter communication (including bistatic backscatter communication) can be achieved, thereby meeting the transmission distance and efficiency requirements during the transmission of these multiple devices (such as tag devices).

[0179] Optionally, the time domain resources of the first signal corresponding to the m-th transmitting beam are the same, or within a first time window (i.e., a certain time window), the time domain resources and frequency domain resources of the first signal corresponding to the m-th transmitting beam belong to the same resource set to improve the accuracy of beam management. The first time window can be preset based on actual requirements, and no specific limitation is imposed on this.

[0180] Optionally, there is an association relationship between the time-frequency resources of the K second signals and the time-frequency resources of the first signal. For example, the time for sending the first signal and the time for receiving the second signal are within a specified time window to improve the accuracy and effectiveness of beam management.

[0181] Optionally, the generation method of the second signal includes at least one of the following:

[0182] Obtained by reflecting the first signal according to the configured reflection coefficient; that is, a signal obtained by reflecting the first signal without any modulation with the configured reflection coefficient. At this time, the frequency-domain resources of the second signal are the same as those of the first signal, and the time when the first device sends the first signal and the time when the third device receives the second signal are within the specified time window. At this time, the first signal is a reference signal for downlink beam training, and the second signal is mainly used for downlink beam training. At this time, the downlink refers to the communication link from the first device to one or more second devices.

[0183] Obtained by performing all-ones backscatter modulation on the first signal; a backscatter signal obtained by performing all-ones modulation on the first signal as the radio frequency carrier signal. At this time, the frequency-domain resources of the second signal are the same as those of the first signal, and the time when the first device sends the first signal and the time when the third device receives the second signal are within the specified time window. This all-ones backscatter modulation can be understood as performing backscatter modulation on the first signal based on an all-ones baseband signal, and the second signal is the first signal. At this time, the first signal is a reference signal for downlink beam training, and the second signal is mainly used for downlink beam training. At this time, the downlink refers to the communication link from the first device to one or more second devices.

[0184] Obtained by using the first signal as the radio frequency carrier signal and performing backscatter modulation and resource mapping on the first signal according to the time-frequency resource configuration of the second signal. At this time, the first signal is the radio frequency carrier signal of the second signal, and the second signal is the backscatter modulation signal of the first signal. The frequency-domain resources of the second signal are the single-sideband or double-sideband frequency shift of the frequency-domain resources of the first signal in the frequency domain, and the time when the first device sends the first signal and the time when the third device receives the second signal are within the specified time window. At this time, the second signal is mainly used for uplink beam training. At this time, the uplink refers to the communication link from one or more second devices to the third device.

[0185] Obtained by using the first signal as the control signal and performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal. At this time, the first signal is the control signal of the second signal; the first signal carries indication information for the second device to determine the signal parameters of the second signal.

[0186] Optionally, the first signal may be, but is not limited to, at least one of the following:

[0187] Beam training reference signal;

[0188] A signal for providing a radio frequency carrier, and at this time the second signal is a reference signal;

[0189] Control signal, that is, a signal for controlling or instructing the second device to generate the second signal.

[0190] Optionally, the beam training reference signal includes, but is not limited to, at least one of the following:

[0191] Synchronization signal block (SSB) signal;

[0192] Sounding reference signal (SRS);

[0193] Channel state information reference signal (CSI-RS);

[0194] Phase tracking reference signal (TRS);

[0195] Positioning reference signal (PRS);

[0196] Layer 1 reference signal, such as other layer 1 reference signals other than the above reference signals.

[0197] Optionally, the method for beam management in this embodiment may further include:

[0198] The second device receives the first information sent by the first device, or receives the fifth information sent by the third device; wherein, the first information or the fifth information is used to configure the same signal parameters of the first signal and the same signal parameters of the second signal for the K second devices when the second signal is the reflected amplified signal of the first signal; or, the first information or the fifth information is used to configure the same signal parameters of the first signal and the same or different signal parameters of the second signal for the K second devices when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal. In this way, the second device can accurately transmit and receive signals.

[0199] Optionally, when the second signal is the reflected amplified signal of the first signal, the signal parameters of the first signal include, but are not limited to, at least one of the following:

[0200] The time-domain correlation information of the first signal, such as including whether the transmission of the first signal is periodic, semi-periodic or aperiodic, and the signal length of the first signal, etc.;

[0201] The frequency-domain correlation information of the first signal, such as including bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, Comb size, frequency-domain resource pattern, etc.;

[0202] The code-domain correlation information of the first signal, such as including Orthogonal Cover Code (OCC) sequence or OCC structure, etc.;

[0203] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0204] At least one of the encoding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0205] The power of the first signal.

[0206] Optionally, when the second signal is a reflected and amplified signal of the first signal, the signal parameters of the second signal include, but are not limited to, at least one of the following:

[0207] The reflection coefficient or transmission power of the second signal;

[0208] The preamble of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates a corresponding second signal;

[0209] The synchronization sequence of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates a corresponding second signal;

[0210] The scrambling code of the second signal, which is used for scrambling and is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates a corresponding second signal;

[0211] The device identifier corresponding to the second signal (such as Tag ID or EPC code, etc.).

[0212] Optionally, when the second signal is a backscatter modulation signal of the first signal, or the first signal is a control signal of the second signal, the signal parameters of the first signal include, but are not limited to, at least one of the following:

[0213] The time-domain related information of the first signal, such as including whether the transmission of the first signal is periodic, semi-periodic or aperiodic, and the signal length of the first signal, etc.;

[0214] The frequency-domain related information of the first signal, such as including bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, Comb size, frequency-domain resource pattern, etc.;

[0215] The code-domain related information of the first signal, such as including OCC sequence or OCC structure, etc.;

[0216] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0217] At least one of the encoding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0218] The power of the first signal.

[0219] Optionally, when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the signal parameters of the second signal include, but are not limited to, at least one of the following:

[0220] The reflection coefficient or transmission power of the second signal;

[0221] The preamble of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates a corresponding second signal;

[0222] The synchronization sequence of the second signal, which is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates a corresponding second signal;

[0223] The scrambling code of the second signal, which is used for scrambling and is associated with the device identifier of the second device (such as Tag ID or EPC code, etc.), so that the second device generates a corresponding second signal;

[0224] The device identifier corresponding to the second signal (such as Tag ID or EPC code, etc.);

[0225] The time-domain correlation information of the second signal, such as including whether the transmission of the second signal is periodic, semi-periodic or aperiodic, and the signal length of the second signal, etc.;

[0226] The frequency-domain correlation information of the second signal, such as including bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, Comb size, frequency-domain resource pattern, etc.;

[0227] The code-domain correlation information of the second signal, such as including OCC sequence or OCC structure, etc.;

[0228] The type of the second signal;

[0229] At least one of the modulation method, coding method, signal waveform and sequence generation method of the second signal.

[0230] For example, when the first signal is the control signal of the second signal, the first signal may carry indication information for the second device to determine the signal parameters of the second signal (the content described above), so that the second device determines the signal parameters of the second signal based on the indication information.

[0231] Please refer to Figure 3 , Figure 3 is a flowchart of a beam management method provided by an embodiment of the present application. This method is executed by a third device. As Figure 3 shown, this method includes the following steps:

[0232] Step 31: The third device receives K second signals sent by K second devices respectively through the nth receiving beam among N receiving beams; the K second signals are generated according to a first signal, and the first signal is sent by the first device to the K second devices respectively through the mth transmitting beam among M transmitting beams; 1 ≤ m ≤ M, where M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, where N is an integer greater than or equal to 1.

[0233] Step 32: The third device measures the K second signals.

[0234] In the embodiments of the present application, the second device may be an optional tag device, such as a passive tag (i.e., Device A), a semi - passive tag (i.e., Device B), or an active tag (i.e., Device C).

[0235] In an alternative embodiment, the first device is a device with scheduling or configuration functions, and the third device is a device scheduled or controlled by the first device. For example, the first device is an access network device such as a base station, an IAB device, a relay device, or a repeater, and the third device is a terminal device; or, the first device is an access network device such as a base station, and the third device is an IAB device, a relay device, a repeater, a terminal device, etc.; or, the first device is a main UE device with scheduling or configuration functions, and the third device is a slave UE device, etc.

[0236] In another alternative embodiment, the third device is a device with scheduling or configuration functions, and the first device is a device scheduled or controlled by the third device. For example, the third device is an access network device such as a base station, an IAB device, a relay device, or a repeater, and the first device is a terminal device; or, the third device is an access network device such as a base station, and the first device is an IAB, a relay device, a repeater, a terminal device, etc.; or, the third device is a main UE device with scheduling or configuration functions, and the first device is a slave UE device, etc.

[0237] In the solution of the embodiment of the present application, the first signal is respectively sent to K second devices through the m-th transmission beam among M transmission beams, K second signals are generated according to the first signal, and the K second signals sent by the K second devices are respectively received through the n-th reception beam among N reception beams, and the K second signals are measured, so as to achieve beam management (such as beam measurement, beam training, etc.) in multi-node backscatter communication (including bistatic backscatter communication) when a single beam covers multiple devices (such as tag devices) that do not have the ability to measure and report signals, for example, to achieve beam management in multi-node backscatter communication (including bistatic backscatter communication), thereby meeting the transmission distance and efficiency requirements during the transmission of the multiple devices (such as tag devices).

[0238] Optionally, the time domain resources of the first signal corresponding to the m-th transmission beam are the same, or within a first time window (i.e., a certain time window), the time domain resources and frequency domain resources of the first signal corresponding to the m-th transmission beam belong to the same resource set, so as to improve the accuracy and timeliness of beam management. The first time window can be preset based on actual requirements, and no limitation is made thereto.

[0239] Optionally, there is an association relationship between the time-frequency resources of the K second signals and the time-frequency resources of the first signal, such as the time for sending the first signal and the time for receiving the second signal within a specified time window, so as to improve the accuracy and timeliness of beam management.

[0240] Optionally, the generation method of the second signal includes at least one of the following:

[0241] Obtained by reflecting the first signal according to the configured reflection coefficient; that is, the signal that does not perform any modulation on the first signal and is reflected with the configured reflection coefficient. At this time, the frequency domain resources of the second signal are the same as those of the first signal, and the time when the first device sends the first signal and the time when the third device receives the second signal are within the specified time window; at this time, the first signal is the reference signal for downlink beam training, and the second signal is mainly used for downlink beam training; at this time, the downlink refers to the communication link from the first device to one or more second devices;

[0242] Obtained after performing all-ones backscatter modulation on the first signal; the backscatter signal obtained by performing all-ones modulation on the first signal as the radio frequency carrier signal. At this time, the frequency domain resources of the second signal are the same as those of the first signal, and the time when the first device sends the first signal and the time when the third device receives the second signal are within the specified time window; this all-ones backscatter modulation can be understood as performing backscatter modulation on the first signal based on an all-ones baseband signal, and the second signal is the first signal; at this time, the first signal is the reference signal for downlink beam training, and the second signal is mainly used for downlink beam training; the downlink at this time refers to the communication link from the first device to one or more second devices;

[0243] Obtained by using the first signal as the radio frequency carrier signal and performing backscatter modulation and resource mapping on the first signal according to the time-frequency resource configuration of the second signal; at this time, the first signal is the radio frequency carrier signal of the second signal, and the second signal is the backscatter modulation signal of the first signal; the frequency domain resources of the second signal are the single-sideband or double-sideband frequency shift of the frequency domain resources of the first signal in the frequency domain, and the time when the first device sends the first signal and the time when the third device receives the second signal are within the specified time window. At this time, the second signal is mainly used for uplink beam training; the downlink at this time refers to the communication link from one or more second devices to the third device;

[0244] Obtained by using the first signal as the control signal and performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal; at this time, the first signal is the control signal of the second signal; the first signal carries the indication information of the signal parameters for the second device to determine the second signal.

[0245] Optionally, the first signal may be, but is not limited to, at least one of the following:

[0246] Beam training reference signal;

[0247] A signal for providing a radio frequency carrier, and at this time the second signal is a reference signal;

[0248] Control signal, that is, a signal for controlling or instructing the second device to generate the second signal.

[0249] Optionally, the beam training reference signal includes, but is not limited to, at least one of the following:

[0250] Synchronization signal block SSB signal;

[0251] Sounding reference signal SRS;

[0252] Channel state information reference signal CSI-RS;

[0253] Phase tracking reference signal TRS;

[0254] Positioning reference signal PRS;

[0255] Layer 1 reference signals, such as other Layer 1 reference signals in addition to the above-mentioned reference signals.

[0256] Optionally, when the third device measures the K second signals, the measured values obtained include but are not limited to at least one of the following:

[0257] Statistical values of the Layer 1 Reference Signal Received Power (L1-RSRP) measurement values of the K second signals within a preset time;

[0258] Statistical values of the Layer 1 Received Signal Strength Indication (L1-RSSI) measurement values of the K second signals within a preset time;

[0259] Statistical values of the Layer 1 Reference Signal Received Quality (L1-RSRQ) measurement values of the K second signals within a preset time;

[0260] Statistical values of the Layer 1 Signal to Interference plus Noise Ratio (L1-SINR) measurement values of the K second signals within a preset time;

[0261] Statistical values of the Layer 1 Signal to Interference Ratio (L1-SIR) measurement values of the K second signals within a preset time;

[0262] Statistical values of the Layer 1 Signal Noise Ratio (L1-SNR) measurement values of the K second signals within a preset time;

[0263] Statistical values of the Channel State Information (CSI) measurement values of the K second signals within a preset time; the CSI may include a Channel Quality Indicator (CQI), a Rank Indicator (RI), etc.;

[0264] Statistical values of the Block Error Rate (BLER) measurement values of the K second signals within a preset time;

[0265] The statistical value of the measured Bit Error Ratio (BER) of the K second signals within a preset time.

[0266] It should be noted that the above preset time can be agreed upon by the protocol, pre-configured, etc., and is not limited thereto. The statistical values of the above measurement values can be superimposed, such as calculating weighted values, products, or ratios, etc.

[0267] Optionally, the statistical value includes but is not limited to at least one of the following:

[0268] The linear average value in the time domain, frequency domain, or spatial domain;

[0269] The maximum value in the time domain, frequency domain, or spatial domain;

[0270] The weighted value in the time domain, frequency domain, or spatial domain.

[0271] In the embodiments of the present application, the first device (such as a device with scheduling function) can select appropriate transceiver beams according to the signal measurement results of the third device. The above method for beam management may further include:

[0272] The third device sends beam report information to the first device; the beam report information includes at least one of the following:

[0273] Resource Indicator, used to indicate the time-frequency domain resources of the first signal or the second signal;

[0274] The measurement values of the second signals corresponding to L beam-pairs, or the difference values between the measurement values of the second signals corresponding to L beam-pairs and the maximum or minimum measurement values; the L is related to the M or the N, that is, based on the M transmit beams or N receive beams used for beam training to determine the L beam-pairs to be reported, or the L is related to the size of the reported resource set, that is, based on the size of the reported resource set to determine the L beam-pairs to be reported; for example, when reporting the beam report information, the resource indicator corresponds to the measurement values of the second signals corresponding to the L beam-pairs or the difference values between them and the maximum or minimum measurement values;

[0275] The device identifiers of the K second devices; for example, when reporting the beam report information, the device identifier corresponds to the measurement value of the second signal or the difference value between it and the maximum or minimum measurement value;

[0276] Resource set identifier of measurement resources, which can be used in multi-TRP scenarios; for example, multiple TRP beams / CSI measurements and reports can be configured in a CSI report setting, where the channel measurement resources (CMR) associated with the CSI report are configured through the higher-layer parameter CSI Resource Setting. The CSI resource setting includes at least two CSI resource sets of channel measurement resources, and each CSI resource set corresponds to a different TRP;

[0277] Index representing a set of device capability values (such as UE Capability Value Set), which can be used for beam reporting of multi-panel devices; for example, when the third device reports capability information, it can report a set of UE capability value sets, and each set includes at least the maximum number of SRS ports supported by the set; after beam measurement, the third device determines the UE capability value set corresponding to each reported CSI-RS and / or SSB resource index (such as SSB resource index) according to the measurement results, and reports this correspondence relationship to the first device through a beam report (such as beam report); therefore, an index for representing the UE capability value set is added to the beam report format;

[0278] Capability information of the third device, including but not limited to whether the third device supports refined transmit or receive beams, whether it supports multi-panel simultaneous reporting, etc.;

[0279] Relevant information indicating the beam range;

[0280] Semi-persistent CSI reporting configuration identifier, which can be used to indicate the first device to activate the corresponding semi-persistent CSI reporting, thus saving the downlink control information DCI for deactivating the semi-persistent CSI reporting.

[0281] Optionally, the above beam management method may further include:

[0282] The third device receives the second information sent by the first device; wherein, the second information is used to configure or indicate the TCI state information of the third device, so that the third device obtains the receiving beam for subsequent reception. For example, after obtaining the beam report information, the first device may configure or indicate the corresponding TCI state information to the third device according to the parameters of the determined first receiving beam; or, after obtaining the beam report information, determine the parameters of the first receiving beam and configure or indicate the corresponding TCI state information to the third device.

[0283] Optionally, the third device sending the beam report information to the first device may include:

[0284] The third device sends the beam report information to the first device through at least one of the following:

[0285] A scheduling request (SR) dedicated to the third device to trigger reporting;

[0286] A control channel, including but not limited to a physical uplink control channel (PUCCH), a physical sidelink control channel (PSCCH), a physical sidelink feedback channel (PSFCH), etc.;

[0287] A data channel, including but not limited to a physical uplink shared channel (PUSCH), a physical sidelink shared channel (PSSCH), a physical sidelink discovery channel (PSDCH), etc.;

[0288] An available uplink grant (UL Grant), such as the most recently available UL Grant;

[0289] An available configured grant, such as a configured grant associated with a target reference;

[0290] A random access channel, including but not limited to MsgA, Msg1, Msg3, etc.

[0291] Optionally, the above beam management method may further include:

[0292] The third device receives the third information sent by the first device; wherein, the third information includes at least one of the following: measurement configuration information for performing beam measurement, and reporting configuration information for reporting beam report information; there is an association relationship between the reporting configuration information and the measurement configuration information. For example, the measurement configuration information may include one or more measurement resource sets, and the reporting configuration information may include one or more reporting resource sets.

[0293] Thus, the third device can perform beam measurement based on the measurement configuration information and report beam report information based on the reporting configuration information.

[0294] Optionally, the reporting configuration information includes but is not limited to at least one of the following:

[0295] Composition content of the beam report information;

[0296] Beam reporting method, such as group-based beam reporting, non-group-based beam reporting, etc.;

[0297] Number of beam reports allowed for non-group based beam report;

[0298] Number of beam reports allowed for group based beam report.

[0299] Optionally, when the third device measures K second signals, it can use the measurement resources corresponding to the measurement configuration information associated with the reporting configuration information of the beam report information to measure the K second signals.

[0300] Optionally, the beam management method in this embodiment may further include:

[0301] When a first condition is satisfied, the third device reports beam report information; the first condition includes at least one of the following:

[0302] The measured value of the second signal corresponding to the first measurement resource set is lower than a first threshold;

[0303] The measured value of the second signal corresponding to the second measurement resource set is higher than a second threshold;

[0304] The measured value of the second signal corresponding to the first measurement resource set is lower than the measured value of the second signal corresponding to the second measurement resource set;

[0305] The measured value of the second signal corresponding to the first measurement resource set is continuously lower than a third threshold for a times, where a is an integer greater than 0;

[0306] The measured value of the second signal corresponding to the second measurement resource set is continuously higher than the fourth threshold for b times, where b is an integer greater than 0;

[0307] The measured value of the second signal corresponding to the first measurement resource set is continuously lower than the measured value of the second signal corresponding to the second measurement resource set for c times, where c is an integer greater than 0;

[0308] The measured value of the second signal corresponding to the first measurement resource set is continuously lower than the fifth threshold within the first preset time;

[0309] The measured value of the second signal corresponding to the second measurement resource set is continuously higher than the sixth threshold within the second preset time;

[0310] The measured value of the second signal corresponding to the first measurement resource set is continuously lower than the measured value of the second signal corresponding to the second measurement resource set within the third preset time.

[0311] It should be noted that the first measurement resource set is the beam set that the third device is using or will use, and the second measurement resource set is the candidate beam set of the third device. The first measurement resource set and the second measurement resource set can be configured through measurement configuration information. The values of the first threshold, the third threshold, and the fifth threshold can be the same or different, and the values of the second threshold, the fourth threshold, and the sixth threshold can be the same or different. Specifically, they can be configured by the third device or specified by the protocol, etc. The first preset time, the second preset time, and the third preset time can be the same or different. Specifically, they can be configured by the third device or specified by the protocol, etc.

[0312] In this way, by conditionally reporting beam report information, signaling overhead can be saved.

[0313] Optionally, the beam management method in this embodiment may further include:

[0314] The third device determines the parameters of the first transmission beam of the first device or the parameters of the first reception beam of the third device according to the measured values of the K second signals. Among them, the first transmission beam may be the transmission beam with the best quality or the most stable signal statistical value selected from the M transmission beams. The first reception beam may be the reception beam with the best quality or the most stable signal statistical value selected from the N reception beams. Thus, transmission beams and reception beams for subsequent transceiver can be obtained.

[0315] Optionally, the parameters of the first transmission beam or the first reception beam include but are not limited to at least one of the following:

[0316] The width of the first transmission beam or the first reception beam;

[0317] The radiation direction of the first transmission beam or the first reception beam;

[0318] The power of the first transmission beam or the first reception beam;

[0319] The index of the first transmission beam or the first reception beam;

[0320] The precoding matrix indicator (PMI) of the first transmission beam or the first reception beam;

[0321] The duty cycle of the first transmission beam or the first reception beam;

[0322] The number of transmission antennas of the first transmission beam, or the number of reception antennas of the first reception beam;

[0323] The index of the transmission antennas of the first transmission beam, or the index of the reception antennas of the first reception beam.

[0324] Optionally, the beam management method in the embodiments of the present application may further include:

[0325] The third device sends fourth information to the first device; wherein, the fourth information is used to configure or indicate the TCI state information of the first device. For example, after the third device measures the second signal, it may configure or indicate the TCI state information to the first device, so that the first device can obtain the transmission beam for subsequent transmission. For the manner in which the third device configures or indicates the TCI state information, reference may be made to the above content, such as configuring or indicating the TCI state information based on various combinations of RRC, DCI, MAC CE, SCI, and L1 signaling.

[0326] Optionally, the beam management method in the embodiments of the present application may further include:

[0327] The third device sends fifth information to the K second devices; wherein, when the second signal is the reflected amplified signal of the first signal, the fifth information is used to configure the same signal parameters of the first signal and the same signal parameters of the second signal for the K second devices; or, when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the fifth information is used to configure the same signal parameters of the first signal and the same or different signal parameters of the second signal for the K second devices.

[0328] For the specific content of the signal parameters of the first signal and the signal parameters of the second signal, reference may be made to the above embodiments, and details are not described herein again.

[0329] The present application will be described below with reference to specific embodiments.

[0330] Example 1

[0331] In this first embodiment, possible scenarios and beam training processes are given.

[0332] In a possible scenario 1, as Figure 4A shown, the first device is a device with scheduling or configuration functions, and the third device is a device scheduled or controlled by the first device. For example, the first device is an access network device such as a base station, IAB device, relay device, or Repeater, and the third device is a terminal device; or, the first device is an access network device such as a base station, and the third device is an access network device such as an IAB device, relay device, or Repeater, a terminal device, etc.; or, the first device is a master UE device with scheduling or configuration functions, and the third device is a slave UE device, etc. In this scenario, the specific process includes:

[0333] (a) The first device first sends measurement configuration information and reporting configuration information to the third device, and at the same time configures the signal parameters of the first signal and the second signal for the second device; where the time-frequency domain resources of the first signal and the second signal are related to the measurement resources configured for the third device; at the same time, the first device sends the first signal to K second devices based on a beam.

[0334] (b) The K second devices generate the second signal based on the received first signal according to the signal parameter configuration information of the first signal and the second signal, and send the K second signals to the third device.

[0335] (c) The third device receives the second signal on the specified time-frequency domain resources according to the received measurement configuration information and reporting configuration information, performs beam measurement, and reports the beam report, reference signal identifier, and related information as beam report information to the first device according to the reporting configuration information.

[0336] (d) The first device determines the best transmission beam and beam parameters according to the beam report information of the third device, and determines the receiving beam and beam parameters of the third device, and configures them for the third device through TCI information.

[0337] In another possible scenario 2, as Figure 4B shown, the third device is a device with scheduling or configuration functions, and the first device is a device scheduled or controlled by the third device. For example, the third device is an access network device such as a base station, relay device, or Repeater, and the first device is a terminal device; or, the third device is an access network device such as a base station, and the first device is an access network device such as an IAB device, relay device, or Repeater, a terminal device, etc.; or, the third device is a master UE device with scheduling or configuration functions, and the first device is a slave UE device, etc. In this scenario, the specific process includes:

[0338] (a) The third device first configures resource information for the first device, such as reference signal type, time-frequency domain resources, etc., and at the same time configures signal parameters of the first signal and the second signal for the second device; wherein the time-frequency domain resources of the first signal and the second signal are related to the resource information configured for the first device, and are also related to the measurement resources of the third device; the first device generates the first signal according to the configured resource information and sends it to K second devices.

[0339] (b) The K second devices generate the second signal based on the received first signal according to the signal parameter configuration information of the first signal and the second signal, and send the K second signals to the third device.

[0340] (c) The third device receives the second signal on the specified time-frequency domain resources and performs beam measurement, determines the best transmission beam and beam parameters of the first device according to the beam measurement result, configures them for the first device through TCI information, and determines the receiving beam and beam parameters of the third device.

[0341] Furthermore, in the above two scenarios, it can be further divided into downlink (forward) beam training and uplink (reverse) beam training. Here, only taking the above scenario 1 as an example, the corresponding solution is described.

[0342] (1) Downlink beam training: M≥2 transmission beams, N = 1 receiving beam.

[0343] This scenario is for the scenario where the downlink transmission coverage from the first device to the second device is limited. The first device sends the first signal to the K second devices through the m-th (1≤m≤M) beam (i.e., one of the M transmission beams); the K second devices generate the second signal based on the first signal and send it to the third device; the third device receives the K second signals based on 1 fixed beam (or an omnidirectional receiving antenna). Among them, the first signals sent from the M transmission beams belong to the same resource set. Therefore, the first device needs to select 1 transmission beam from the M transmission beams according to the beam report information reported by the third device to improve the downlink transmission coverage of the K second devices.

[0344] Since the second device itself does not have the ability to measure and report signals, these K second devices can backscatter the received first signal to the third device according to a fixed reflection coefficient, that is, the second signal sent by the second device at this time is the signal of the received first signal without modulation after passing through the reflection coefficient, but the second signal may include the device identification information of the second device, or a preamble sequence, a synchronization sequence, etc. that are associated with the device or device identification one by one. The third device receives the second signals sent by the K second devices on the same frequency domain resources as the first signal is sent, determines the measurement value, and selects the optimal transmission beam according to the optimal beam selection principle.

[0345] Alternatively, the second signal sent by the second device can be a backscatter modulation signal obtained by multiplying the received first signal by a baseband modulation. That is, in this case, the first signal is the RF carrier signal of the second signal, the second signal is the backscatter modulation signal of the first signal, and there is a certain frequency offset between the first signal and the second signal in terms of frequency. Similarly, the second signal may include device identification information of the second device, or a preamble sequence, a synchronization sequence, etc. that are associated with the device or device identification one by one. The third device receives the second signals sent by K second devices within the transmission time window and frequency domain resources of the second signal, determines the measurement values, and determines the optimal transmission beam according to the optimal beam selection principle.

[0346] The beam training overhead in this scenario is the number of times of training for M transmission beams.

[0347] (2) Uplink beam training: M = 1 transmission beam, N ≥ 2 receiving beams.

[0348] This scenario is for the scenario where the uplink transmission coverage from the second device to the third device is limited. The first device sends a first signal to K second devices through 1 fixed beam or an omnidirectional antenna; the K second devices generate a second signal based on the received first signal and send it to the third device; the third device receives the K second signals through the nth (1 ≤ n ≤ N) receiving beam according to the configured measurement resources. At the same time, the third device reports beam information to the first device; the first device selects 1 receiving beam from the N receiving beams for the third device to receive the subsequent signals of the K second devices according to the beam report information, and configures TCI information for the third device. The time-frequency resources of the second signals received from the N receiving beams belong to the same time-frequency resource set. The beam training overhead in this scenario is the number of times of training for N receiving beams.

[0349] (3) Joint beam patrol training: M ≥ 2 transmission beams, N ≥ 2 receiving beams.

[0350] This scenario is for the case where the transmission coverage from the first device to the second device and from the second device to the third device is limited. The first device sends a first signal to K second devices through the m-th (1 ≤ m ≤ M) transmission beam; the K second devices generate a second signal based on the received first signal and send it to the third device; the third device receives the K second signals through the n-th (1 ≤ n ≤ N) reception beam; the third device reports beam report information to the first device according to the configured reporting resource configuration information, and the first device determines the optimal transmission beam of the first device and the optimal reception beam of the third device according to the beam report information, and configures the TCI of the reception beam of the third device for the third device. The first signals sent from the M transmission beams belong to the same resource set, and the time-frequency resources of the second signals received from the N reception beams belong to the same time-frequency resource set.

[0351] Embodiment 2

[0352] In this second embodiment, a beam selection quality evaluation criterion for the first device or the third device to determine the optimal transmission beam of the first device or the optimal reception beam of the third device is given. The same scenario 1 in the above-mentioned first embodiment is used as an example for illustration.

[0353] In a possible solution, it is assumed that the third device receives a first measurement value in the beam report information of the first device. The first measurement value is the l-th measurement value of the signal quality of the K second signals sent from the m-th transmission beam of the first device received by the third device through the n-th reception beam, denoted as Then the first measurement value R is:

[0354]

[0355] where β k (1 ≤ k ≤ K) is a coefficient, which can be different coefficients assigned to each second device (i.e., each second device is set separately, but the weights configured for different second devices are different), or can simply take the value of represents the signal quality measurement value of the second signal, including one of L1-RSRP, L1-RSSI, L1-RSRQ, L1-SINR, L1-SNR, and L1-SIR. At this time, the optimal transmission beam of the first device and the optimal reception beam of the third device determined are:

[0356]

[0357] In this solution, by taking the average value of the single signal quality measurement values of the K second signals as the beam quality selection criterion, it is relatively simple.

[0358] In another possible solution, the average value of the weighted value, product or ratio of multiple signal quality measurement values is used as the beam quality selection criterion. For example, the first measurement value can be defined as:

[0359]

[0360] where represents the measurement value with RSRP as the signal quality measurement value in the above solution, represents the measurement value with SINR as the signal quality measurement value in the above solution, and γ and μ are the weighted values of the measurement values and respectively. At this time, the optimal transmission beam of the first device and the optimal reception beam of the third device are:

[0361]

[0362] m,n is defined as the product, ratio, etc. of the measurement values and respectively; in addition, in addition to L1-RSRP and L1-SINR as signal quality measurement values, it can also be a combination of two or more of L1-RSRP, L1-RSSI, L1-RSRQ, L1-SINR, L1-SNR, and L1-SIR as signal measurement values. In this solution, by using the average value of the weighted value, product or ratio of multiple signal quality measurement values of K second signals as the beam quality selection criterion, the selected beam has better comprehensive performance and may not have the problem of ping-pong switching.

[0363] Embodiment 3

[0364] In this Embodiment 3, an example of possible beam report information is given. Only in the above Scenario 1, the third device needs to report beam report information to the first device, and in Scenario 2, there is no need to report beam report information.

[0365] Since the solution in this application is for beam report information of beam measurement of the backscatter communication cascaded link, the beam report should include at least three items: (1) based on the first measurement value in Embodiment 2 or the difference value between it and the maximum / minimum measurement value; (2) the signal resource indication corresponding to the measurement value, and this signal resource can be associated with the first signal or the second signal; (3) optionally, including the ID information of the second device. At this time, the third device sends the measurement values of the second signals sent by each second device to the first device.

[0366] Example 1: The third device reports the first measurement values of the second signals of K second devices to the first device.

[0367] In this solution, the third device receives second signals sent by K second devices. The third device calculates the statistical value of the measurement values of the K second signals from the K second devices and reports it as the first measurement value. According to beam reporting based on grouping or beam reporting based on non-grouping, it can be further divided into the following situations. In this embodiment, taking the third device reporting 4 beam pairs as an example, it can be extended to beam reports with other numbers of beams without loss of generality.

[0368] (1) Beam reporting based on non-grouping

[0369] (a) When configured for beam reporting based on non-grouping and the first signal is a reference signal, the non-differential reporting method is as shown in Table 1 below:

[0370] Table 1

[0371]

[0372] Among them, the first measurement value #1, the first measurement value #2, the first measurement value #3, and the first measurement value #4 are sorted by size. For example: the first measurement value #1 is the largest and the first measurement value #4 is the smallest; or, the first measurement value #1 is the smallest and the first measurement value #4 is the largest.

[0373] (b) When configured for beam reporting based on non-grouping and the first signal is a reference signal, the differential reporting method is as shown in Table 2 below:

[0374] Table 2

[0375]

[0376] Among them, the first measurement value #1, the first measurement value #2, the first measurement value #3, and the first measurement value #4 are sorted by size. For example: the first measurement value #1 is the largest and the first measurement value #4 is the smallest; or, the first measurement value #1 is the smallest and the first measurement value #4 is the largest.

[0377] (c) When configured for beam reporting based on non-grouping, the first signal is a radio frequency carrier signal, and the second signal is a reference signal, the non-differential reporting method is as shown in Table 3 below:

[0378] Table 3

[0379]

[0380] Among them, the first measurement value #1, the first measurement value #2, the first measurement value #3, and the first measurement value #4 are sorted by size. For example: the first measurement value #1 is the largest and the first measurement value #4 is the smallest; or, the first measurement value #1 is the smallest and the first measurement value #4 is the largest.

[0381] (d) When configured for non-group-based beam reporting, and the first signal is a radio frequency carrier signal and the second signal is a reference signal, the differential reporting method can be as shown in Table 4 below:

[0382] Table 4

[0383]

[0384] Among them, the first measurement value #1, the first measurement value #2, the first measurement value #3, and the first measurement value #4 are sorted by size. For example: the first measurement value #1 is the largest and the first measurement value #4 is the smallest; or, the first measurement value #1 is the smallest and the first measurement value #4 is the largest.

[0385] (2) Group-based beam reporting

[0386] Without loss of generality, taking the first signal as the reference signal, and using the non-differential reporting beam reporting method, and one group supporting the reporting of 2 beams, it can be as shown in Table 5 below. Similarly, it can be extended to the case where the second signal is the reference signal, or the differential reporting method is used, or one group supports the reporting of x beams, which will not be elaborated here.

[0387] Table 5

[0388]

[0389] Example 2: The third device reports the measurement values of the second signals of K second devices to the first device one by one.

[0390] In this scheme, the third device also receives the second signals sent by K second devices. However, at this time, the third device reports the measurement values of the K second signals in the beam report one by one. The advantage is that: the first device can obtain more detailed measurement value information, so as to better perform beam selection.

[0391] Without loss of generality, the following takes the non-group reporting form and the non-differential reporting beam reporting method as an example for illustration. Similarly, it can be extended to the case where the second signal is the reference signal, or the differential reporting form is used, or the group reporting form is used and one group supports the reporting of x beams, which will not be elaborated here.

[0392] Taking K = 3 as an example, at this time, the beam report needs to include the measurement values of the first signals (i.e., the second signals) amplified and forwarded by 3 second devices. If the first signal is the reference signal at this time, the resource indications of the first signals corresponding to the 3 second devices are the same, so there is no need to distinguish the devices. The corresponding beam report can be as shown in Table 6 below:

[0393] Table 6

[0394]

[0395] In addition, the order in the above report can also be adjusted. For example, the measured values with the same first signal resource RI can be grouped together, and the corresponding beam report can be as shown in Table 7 below:

[0396] Table 7

[0397]

[0398] Furthermore, when the second signal is the reference signal for beam measurement and the time-frequency domain resources of the second signals of different second devices are different, the resources corresponding to different second devices need to be indicated in the beam report. One example is given below, as shown in Table 8, but note that the parameter order in this example can also be adjusted.

[0399] Table 8

[0400]

[0401]

[0402] Example 3: The third device reports the K beam reports corresponding to the measured values of the second signals of K second devices to the first device.

[0403] In this scheme, the third device also receives the second signals sent by K second devices. However, at this time, the third device reports the measured values of the K second signals one by one as K beam reports. The advantages are as follows: The first device can obtain more detailed measured value information, so as to better perform beam selection; at the same time, since the measured value of the second signal of each second device is used as a separate beam report, after one of the second devices does not report the beam report due to environmental changes, it will not affect the content of the beam reports of other devices, and the flexibility is higher.

[0404] Without loss of generality, the following uses the non-grouped reporting form and the beam reporting method with non-differential reporting as an example for illustration. Similarly, it can be extended to the case where the second signal is the reference signal, or the differential reporting form is adopted, or the grouped reporting form is adopted and one group supports the reporting of x beams, which will not be elaborated here.

[0405] Taking K = 3 as an example, at this time, 3 beam reports need to be reported, which are respectively from the measured values of the first signals (i.e., the second signals) amplified and forwarded by 3 second devices. The corresponding beam reports are shown in Table 9, Table 10, and Table 11 respectively:

[0406] Table 9

[0407]

[0408] Table 10

[0409]

[0410] Table 11

[0411]

[0412] Example 4

[0413] After beam measurement and beam reporting, the first device or the third device can perform beam indication on the downlink and uplink channels or reference signals for establishing a beam link between the first device and the third device to achieve the transmission of signals or reference signals. In Example 4, taking the case where the first device configures TCI for the third device as an example, different methods for TCI configuration or indication are given:

[0414] (a) Beam indication using the downlink control channel (e.g., PDCCH, PSCCH) or control command: The first device configures K TCI states for each CORESET using RRC signaling. When K>1, 1 TCI state is indicated or activated by MAC CE. When K = 1, no additional MAC CE command is required; when the third device monitors the control signaling or control command, the same QCL, that is, the same TCI state, is used for all search spaces within the CORESET for monitoring.

[0415] (b) Beam indication using the downlink data channel (e.g., PDSCH, PSSSH) or data signal: The first device configures B TCI states through RRC signaling, then activates up to b corresponding TCI states using the MAC CE command, and then notifies the TCI state through DCI, SCI or L1 signaling.

[0416] (c) Beam indication using the downlink reference signal (e.g., CSI RS, TRS, SSB, PRS, etc.): When the reference signal type is a periodic signal, the first device configures the QCL information for the reference signal resource set through RRC signaling; when the reference signal type is a semi-persistent or semi-periodic signal, the first device activates a reference signal resource from the reference signal resource set configured by RRC signaling using the MAC CE command and indicates its QCL information; when the reference signal type is an aperiodic signal, the first device configures the QCL for the reference signal resource through RRC signaling and uses DCI, SCI or L1 signaling to trigger the TCI state.

[0417] (d) Beam indication using an uplink control channel (e.g., PUCCH, PSFCH) or an uplink feedback channel: The first device configures spatial correlation information for each uplink control command resource using RRC signaling. When there are multiple pieces of spatial correlation information configured for an uplink control command resource, one of the pieces of spatial correlation information is indicated or activated using a MAC CE; when there is only one piece of spatial correlation information configured for an uplink control command resource, no additional MAC CE command is required.

[0418] (e) Beam indication using an uplink data channel (e.g., PUSCH) or a command, where the spatial correlation information is indicated by a downlink control command DCI, SCI, or L1 signaling.

[0419] (f) Beam indication using an uplink reference signal (e.g., SRS): When the uplink reference signal type is a periodic signal, the first device configures spatial correlation information for the uplink reference signal resource using RRC signaling; when the uplink reference signal type is a semi-persistent or semi-periodic signal, the first device activates the spatial correlation relationship using a MAC CE command; when the uplink reference signal type is an aperiodic signal, the first device configures the spatial correlation relationship for the uplink reference signal resource using RRC signaling and can update it using a MAC CE command.

[0420] In the method for beam management provided by the embodiments of this application, the execution entity can be a beam management device. In the embodiments of this application, taking the beam management device executing the beam management method as an example, the beam management device provided by the embodiments of this application is described.

[0421] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a beam management device provided by the embodiments of this application. The device is applied to a first device. As Figure 5 shown, the beam management device 50 includes:

[0422] A first transmission module 51, configured to respectively send a first signal to K second devices through the m-th transmission beam among M transmission beams; the first signal is used for the K second devices to generate K second signals and send the K second signals to a third device, and the third device respectively receives the K second signals sent by the K second devices through the n-th reception beam among N reception beams and measures the K second signals; 1 ≤ m ≤ M, where M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, where N is an integer greater than or equal to 1.

[0423] Optionally, the time-domain resources of the first signal corresponding to the m-th transmission beam are the same, or within the first time window, the time-domain resources and frequency-domain resources of the first signal corresponding to the m-th transmission beam belong to the same resource set.

[0424] Optionally, there is an association relationship between the time-frequency resources of the K second signals and the time-frequency resources of the first signal.

[0425] Optionally, the first signal is at least one of the following:

[0426] Beam training reference signal;

[0427] Signal for providing radio frequency carrier;

[0428] Control signal.

[0429] Optionally, the beam training signal includes at least one of the following:

[0430] Synchronization signal block SSB signal;

[0431] Sounding reference signal SRS;

[0432] Channel state information reference signal CSI-RS;

[0433] Phase tracking reference signal TRS;

[0434] Positioning reference signal PRS;

[0435] Layer 1 reference signal.

[0436] Optionally, the apparatus 50 for beam management further includes:

[0437] A second transmission module, configured to send first information to the K second devices; wherein, when the second signal is the reflected and amplified signal of the first signal, the first information is used to configure the same signal parameters of the first signal and the same signal parameters of the second signal for the K second devices; or, when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the first information is used to configure the same signal parameters of the first signal and the same or different signal parameters of the second signal for the K second devices.

[0438] Optionally, when the second signal is the reflected and amplified signal of the first signal, the signal parameters of the first signal include at least one of the following:

[0439] The time-domain correlation information of the first signal;

[0440] The frequency-domain correlation information of the first signal;

[0441] The code domain related information of the first signal;

[0442] The type of the first signal;

[0443] At least one of the encoding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0444] The power of the first signal;

[0445] Alternatively, the signal parameters of the second signal include at least one of the following:

[0446] The reflection coefficient or transmission power of the second signal;

[0447] The preamble of the second signal, where the preamble is associated with the device identifier of the second device;

[0448] The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0449] The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device.

[0450] When the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the signal parameters of the first signal include at least one of the following:

[0451] The time domain related information of the first signal;

[0452] The frequency domain related information of the first signal;

[0453] The code domain related information of the first signal;

[0454] The type of the first signal;

[0455] At least one of the encoding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0456] The power of the first signal;

[0457] Alternatively, the signal parameters of the second signal include at least one of the following:

[0458] The reflection coefficient or transmission power of the second signal;

[0459] The preamble of the second signal, where the preamble is associated with the device identifier of the second device;

[0460] The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0461] The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device;

[0462] The time-domain correlation information of the second signal;

[0463] The frequency-domain correlation information of the second signal;

[0464] The code-domain correlation information of the second signal;

[0465] The type of the second signal;

[0466] At least one of the encoding method, modulation method, signal waveform, and sequence generation method of the second signal.

[0467] Optionally, the beam management device 50 further includes:

[0468] A first receiving module, configured to receive the beam report information sent by the third device; where the beam report information includes at least one of the following:

[0469] A resource indication, used to indicate the time-frequency domain resources of the first signal or the second signal;

[0470] The measurement values of the second signals corresponding to L beam pairs, or the difference values between the measurement values of the second signals corresponding to L beam pairs and the maximum or minimum measurement values; where the L is related to the M or the N, or the L is related to the size of the reporting resource set;

[0471] The device identifiers of the K second devices;

[0472] The resource set identifier of the measurement resource;

[0473] The index characterizing the set of device capability values;

[0474] The capability information of the third device;

[0475] The relevant information indicating the beam range;

[0476] The semi-persistent CSI reporting configuration identifier.

[0477] Optionally, the beam management device 50 further includes:

[0478] A first determination module, configured to determine the parameters of the first transmission beam of the first device or the parameters of the first reception beam of the third device according to the beam report information.

[0479] Optionally, the beam management device 50 further includes:

[0480] A third transmission module, configured to send second information to the third device according to the beam report information, where the second information is used to configure or indicate transmission configuration indication (TCI) status information of the third device.

[0481] Optionally, the third transmission module is specifically configured to send the second information to the third device by at least one of the following:

[0482] Radio resource control (RRC) signaling;

[0483] Medium access control control element (MAC CE);

[0484] Downlink control information (DCI);

[0485] Sidelink control information (SCI);

[0486] Layer 1 signaling.

[0487] Optionally, the apparatus 50 for beam management further includes:

[0488] A fourth transmission module, configured to send third information to the third device, where the third information includes at least one of the following: measurement configuration information for performing beam measurement, and reporting configuration information for reporting beam report information; the reporting configuration information is associated with the measurement configuration information.

[0489] Optionally, the apparatus 50 for beam management further includes:

[0490] A second reception module, configured to receive fourth information sent by the third device;

[0491] where the fourth information is used to configure or indicate TCI status information of the first device.

[0492] The apparatus 50 for beam management provided in the embodiments of the present application can implement Figure 1 each process implemented by the method embodiments shown, and achieve the same technical effects. To avoid repetition, details are not described here again.

[0493] Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of an apparatus for beam management provided in the embodiments of the present application. The apparatus is applied to a second device. As Figure 6 shown, the apparatus 60 for beam management includes:

[0494] A third receiving module 61, configured to receive a first signal sent by a first device through an m-th transmission beam among M transmission beams; wherein, the apparatus for beam management is applied to one of K second devices, the first signal is sent by the first device through the m-th transmission beam to the K second devices respectively, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0495] A generating module 62, configured to generate a second signal according to the first signal;

[0496] A fifth transmitting module 63, configured to send the second signal to a third device; the second signal is used for the third device to measure the K second signals after receiving the K second signals sent by the K second devices through an n-th receiving beam among N receiving beams respectively; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

[0497] Optionally, the first signal is at least one of the following:

[0498] A beam training reference signal;

[0499] A signal for providing a radio frequency carrier;

[0500] A control signal.

[0501] Optionally, the generating manner of the second signal includes at least one of the following:

[0502] Obtained by reflecting the first signal according to a configured reflection coefficient;

[0503] Obtained by performing all-ones backscatter modulation on the first signal;

[0504] Taking the first signal as a radio frequency carrier signal, and obtaining the second signal after performing backscatter modulation and resource mapping on the first signal according to the time-frequency resource configuration of the second signal;

[0505] Taking the first signal as a control signal, and obtaining the second signal after performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal.

[0506] Optionally, the apparatus 60 for beam management further includes:

[0507] The fourth receiving module is configured to receive the first information sent by the first device or the fifth information sent by the third device; wherein, when the second signal is the reflected amplified signal of the first signal, the first information or the fifth information is used to configure the same signal parameters of the first signal and the same signal parameters of the second signal for the K second devices; or, when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the first information or the fifth information is used to configure the same signal parameters of the first signal and the same or different signal parameters of the second signal for the K second devices.

[0508] Optionally, when the second signal is the reflected amplified signal of the first signal, the signal parameters of the first signal include at least one of the following:

[0509] The time-domain correlation information of the first signal;

[0510] The frequency-domain correlation information of the first signal;

[0511] The code-domain correlation information of the first signal;

[0512] The type of the first signal;

[0513] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0514] The power of the first signal;

[0515] Alternatively, the signal parameters of the second signal include at least one of the following:

[0516] The reflection coefficient or transmission power of the second signal;

[0517] The preamble of the second signal, and the preamble is associated with the device identifier of the second device;

[0518] The synchronization sequence of the second signal, and the synchronization sequence is associated with the device identifier of the second device;

[0519] The scrambling code of the second signal, and the scrambling code is associated with the device identifier of the second device.

[0520] Optionally, when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, the signal parameters of the first signal include at least one of the following:

[0521] The time-domain correlation information of the first signal;

[0522] The frequency-domain correlation information of the first signal;

[0523] Code domain related information of the first signal;

[0524] Type of the first signal;

[0525] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0526] Power of the first signal;

[0527] Alternatively, the signal parameters of the second signal include at least one of the following:

[0528] Reflection coefficient or transmission power of the second signal;

[0529] Preamble of the second signal, where the preamble is associated with the device identifier of the second device;

[0530] Synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0531] Scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device;

[0532] Time domain related information of the second signal;

[0533] Frequency domain related information of the second signal;

[0534] Code domain related information of the second signal;

[0535] Type of the second signal;

[0536] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the second signal.

[0537] The beam management device 60 provided by the embodiments of the present application can implement Figure 2 Each process implemented by the method embodiment shown, and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0538] Please refer to Figure 7 , Figure 7 FIG. is a schematic structural diagram of a beam management device provided by the embodiments of the present application. This device is applied to a third device. As Figure 7 shown, the beam management device 70 includes:

[0539] The fifth receiving module 71 is configured to respectively receive K second signals sent by K second devices through the nth receiving beam among N receiving beams; the K second signals are generated according to a first signal, and the first signal is sent by a first device to the K second devices respectively through the mth transmitting beam among M transmitting beams; 1 ≤ m ≤ M, where M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

[0540] The measuring module 72 is configured to measure the K second signals.

[0541] Optionally, the measurement values of the K second signals include at least one of the following:

[0542] The statistical value of the layer 1 reference signal received power L1-RSRP measurement values of the K second signals within a preset time;

[0543] The statistical value of the layer 1 received signal strength indication L1-RSSI measurement values of the K second signals within a preset time;

[0544] The statistical value of the layer 1 reference signal received quality L1-RSRQ measurement values of the K second signals within a preset time;

[0545] The statistical value of the layer 1 signal-to-interference-plus-noise ratio L1-SINR measurement values of the K second signals within a preset time;

[0546] The statistical value of the layer 1 signal interference ratio L1-SIR measurement values of the K second signals within a preset time;

[0547] The statistical value of the layer 1 signal-to-noise ratio L1-SNR measurement values of the K second signals within a preset time;

[0548] The statistical value of the channel state information CSI measurement values of the K second signals within a preset time;

[0549] The statistical value of the block error rate BLER measurement values of the K second signals within a preset time;

[0550] The statistical value of the bit error rate BER measurement values of the K second signals within a preset time.

[0551] Optionally, the beam management device 70 further includes:

[0552] The sixth transmitting module is configured to send beam report information to the first device;

[0553] Wherein, the beam report information includes at least one of the following:

[0554] Resource indication for indicating the time-frequency domain resources of the first signal or the second signal;

[0555] Measurement values of the second signals corresponding to L beam pairs, or difference values of the measurement values of the second signals corresponding to L beam pairs and the maximum or minimum measurement values; wherein, the L is related to the M or the N, or the L is related to the size of the reporting resource set;

[0556] Device identifiers of the K second devices;

[0557] Resource set identifier of the measurement resources;

[0558] Index characterizing the set of device capability values;

[0559] Capability information of the third device;

[0560] Relevant information indicating the beam range;

[0561] Semi-persistent CSI reporting configuration identifier.

[0562] Optionally, the beam management apparatus 70 further includes:

[0563] A sixth receiving module, configured to receive second information sent by the first device; wherein, the second information is used to configure or indicate TCI state information of the third device.

[0564] Optionally, the sixth sending module is specifically configured to: send the beam report information to the first device through at least one of the following:

[0565] A scheduling request SR dedicated to triggering reporting by the third device;

[0566] Control channel;

[0567] Data channel;

[0568] Available uplink grant;

[0569] Available configuration grant;

[0570] Random access channel.

[0571] Optionally, the beam management apparatus 70 further includes:

[0572] A seventh receiving module, configured to receive third information sent by the first device; wherein, the third information includes at least one of the following: measurement configuration information for performing beam measurement, reporting configuration information for reporting beam report information; the reporting configuration information has an association relationship with the measurement configuration information.

[0573] Optionally, the reporting configuration information includes at least one of the following:

[0574] Composition content of beam report information;

[0575] Beam reporting method;

[0576] Number of beam reports allowed for beam reporting without grouping;

[0577] Number of beam reports allowed for beam reporting based on grouping.

[0578] Optionally, the measurement module 72 is specifically configured to: measure the K second signals by using the measurement resources corresponding to the measurement configuration information associated with the reporting configuration information of the beam report information.

[0579] Optionally, the beam management device 70 further includes:

[0580] A reporting module, configured to report beam report information when a first condition is met; the first condition includes at least one of the following:

[0581] The measurement value of the second signal corresponding to the first measurement resource set is lower than a first threshold;

[0582] The measurement value of the second signal corresponding to the second measurement resource set is higher than a second threshold;

[0583] The measurement value of the second signal corresponding to the first measurement resource set is lower than the measurement value of the second signal corresponding to the second measurement resource set;

[0584] The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than a third threshold for a times, where a is an integer greater than 0;

[0585] The measurement value of the second signal corresponding to the second measurement resource set is continuously higher than a fourth threshold for b times, where b is an integer greater than 0;

[0586] The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than the measurement value of the second signal corresponding to the second measurement resource set for c times, where c is an integer greater than 0;

[0587] The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than a fifth threshold within a first preset time;

[0588] The measurement value of the second signal corresponding to the second measurement resource set is continuously higher than a sixth threshold within a second preset time;

[0589] The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than the measurement value of the second signal corresponding to the second measurement resource set within a third preset time;

[0590] Among them, the first measurement resource set is the beam set that the third device is using or will use, and the second measurement resource set is the candidate beam set of the third device.

[0591] Optionally, the beam management apparatus 70 further includes:

[0592] A second determination module, configured to determine parameters of a first transmission beam of the first device or parameters of a first reception beam of the third device according to measurement values of the K second signals.

[0593] Optionally, the beam management apparatus 70 further includes:

[0594] A seventh transmission module, configured to send fourth information to the first device, where the fourth information is used to configure or indicate TCI state information of the first device.

[0595] Optionally, the beam management apparatus 70 further includes:

[0596] An eighth transmission module, configured to send fifth information to the K second devices; where the fifth information is used to configure the same signal parameters of the first signal and the same signal parameters of the second signal for the K second devices when the second signal is a reflected amplified signal of the first signal; or, the fifth information is used to configure the same signal parameters of the first signal and the same or different signal parameters of the second signal for the K second devices when the second signal is a backscatter modulation signal of the first signal, or the first signal is a control signal of the second signal.

[0597] The beam management apparatus 70 provided in the embodiments of the present application can implement Figure 3 each process implemented by the method embodiment shown, and achieve the same technical effect. To avoid repetition, details are not described here again.

[0598] As Figure 8 shown, the embodiments of the present application further provide a communication device 80, including a processor 81 and a memory 82. A program or instruction that can run on the processor 81 is stored on the memory 82. For example, when the communication device 80 is the first device, when the program or instruction is executed by the processor 81, it implements each step of the beam management method embodiment shown above Figure 1 and can achieve the same technical effect. When the communication device 80 is the second device, when the program or instruction is executed by the processor 81, it implements each step of the beam management method embodiment shown above Figure 2 and can achieve the same technical effect. When the communication device 80 is the third device, when the program or instruction is executed by the processor 81, it implements each step of the beam management method embodiment shown above Figure 3Each step of the method embodiment of beam management shown can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0599] The embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the method embodiment of the above beam management is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0600] Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0601] The embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the method embodiment of the above beam management, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0602] It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-on-chip, system chip, chip system or system-on-chip, etc.

[0603] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the method embodiment of the above beam management, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0604] The embodiment of the present application further provides a communication system, including: a first device, a second device and a third device. The first device can be used to execute the steps of the method of beam management as described above Figure 1 The second device can be used to execute the steps of the method of beam management as described above Figure 2 The third device can be used to execute the steps of the method of beam management as described above Figure 3 The steps of the method of beam management as described above.

[0605] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0606] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0607] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. All these embodiments fall within the protection scope of the present application.

Claims

1. A method for beam management, characterized in that, Including: The first device sends a first signal to K second devices respectively through the m-th transmission beam among M transmission beams; Wherein, the first signal is used for the K second devices to generate K second signals and send the K second signals to a third device, and the third device receives the K second signals sent by the K second devices respectively through the n-th reception beam among N reception beams and measures the K second signals; 1≤m≤M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1≤n≤N, N is an integer greater than or equal to 1.

2. The method according to claim 1, characterized in that, The time-domain resources of the first signal corresponding to the m-th transmission beam are the same, or, within a first time window, the time-domain resources and frequency-domain resources of the first signal corresponding to the m-th transmission beam belong to the same resource set.

3. The method according to claim 1, characterized in that, There is an association relationship between the time-frequency resources of the K second signals and the time-frequency resources of the first signal.

4. The method according to any one of claims 1 to 3, characterized in that, The first signal is at least one of the following: Beam training reference signal; Signal for providing a radio frequency carrier; Control signal.

5. The method according to claim 4, characterized in that, The beam training signal includes at least one of the following: Synchronization signal block SSB signal; Sounding reference signal SRS; Channel state information reference signal CSI-RS; Phase tracking reference signal TRS; Positioning reference signal PRS; Layer 1 reference signal.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: The first device sends first information to the K second devices; Wherein, the first information is used to configure the signal parameters of the same first signal and the signal parameters of the same second signal for the K second devices when the second signal is the reflected amplified signal of the first signal; Or, the first information is used to configure the signal parameters of the same first signal and the signal parameters of the same or different second signals for the K second devices when the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal.

7. The method according to claim 6, characterized in that, When the second signal is the reflected amplified signal of the first signal, The signal parameters of the first signal include at least one of the following: Time-domain correlation information of the first signal; Frequency-domain correlation information of the first signal; Code-domain correlation information of the first signal; Type of the first signal; At least one of the coding method, modulation method, signal waveform and sequence generation method of the first signal; Power of the first signal; Or, The signal parameters of the second signal include at least one of the following: Reflection coefficient or transmission power of the second signal; Preamble of the second signal, which is associated with the device identifier of the second device; Synchronization sequence of the second signal, which is associated with the device identifier of the second device; Scrambling code of the second signal, which is associated with the device identifier of the second device.

8. The method according to claim 6, wherein When the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, The signal parameters of the first signal include at least one of the following: Time-domain correlation information of the first signal; Frequency-domain correlation information of the first signal; Code domain related information of the first signal; Type of the first signal; At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal; Power of the first signal; Or, The signal parameters of the second signal include at least one of the following: Reflection coefficient or transmission power of the second signal; Preamble of the second signal, where the preamble is associated with the device identifier of the second device; Synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device; Scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device; Time domain related information of the second signal; Frequency domain related information of the second signal; Code domain related information of the second signal; Type of the second signal; At least one of the coding method, modulation method, signal waveform, and sequence generation method of the second signal.

9. The method according to any one of claims 1 to 8, wherein The method further includes: The first device receives beam report information sent by the third device; Wherein, the beam report information includes at least one of the following: Resource indication, used to indicate the time-frequency domain resources of the first signal or the second signal; Measurement values of the second signal corresponding to L beam pairs, or difference values between the measurement values of the second signal corresponding to L beam pairs and the maximum or minimum measurement values; wherein, the L is related to the M or the N, or the L is related to the size of the reporting resource set; Device identifiers of the K second devices; Resource set identifier of the measurement resource; Index representing the set of device capability values; Capability information of the third device; Related information indicating the beam range; Semi-persistent channel state information CSI reporting configuration identifier.

10. The method according to claim 9, wherein The method further includes: The first device determines parameters of the first transmission beam of the first device or parameters of the first reception beam of the third device according to the beam report information.

11. The method according to claim 9, wherein The method further includes: The first device sends second information to the third device according to the beam report information; wherein, the second information is used to configure or indicate transmission configuration indication TCI state information of the third device.

12. The method according to claim 11, characterized in that, Sending the second information to the third device includes: The first device sends the second information to the third device through at least one of the following: Radio resource control RRC signaling; Media access control control element MAC CE; Downlink control information DCI; Sidelink control information SCI; Layer 1 signaling.

13. The method according to any one of claims 1 to 12, characterized in that, The method further includes: The first device sends third information to the third device; wherein, the third information includes at least one of the following: measurement configuration information for performing beam measurement, reporting configuration information for reporting beam report information; the reporting configuration information has an associated relationship with the measurement configuration information.

14. The method according to any one of claims 1 to 8, characterized in that, The method further includes: The first device receives fourth information sent by the third device; Wherein, the fourth information is used to configure or indicate TCI state information of the first device.

15. A method for beam management, characterized in that, Includes: The second device receives a first signal transmitted by the first device via the m-th transmission beam among M transmission beams; wherein, the second device is one of K second devices, the first signal is transmitted by the first device via the m-th transmission beam to the K second devices respectively, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1; The second device generates a second signal based on the first signal; The second device transmits the second signal to a third device; wherein, the second signal is used for the third device to measure the K second signals after receiving the K second signals transmitted by the K second devices respectively via the n-th receiving beam among N receiving beams; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

16. The method according to claim 15, characterized in that, The first signal is at least one of the following: A beam training reference signal; A signal for providing a radio frequency carrier; A control signal.

17. The method according to claim 15 or 16, characterized in that, The generation method of the second signal includes at least one of the following: Obtained by reflecting the first signal according to a configured reflection coefficient; Obtained by performing all-ones backscatter modulation on the first signal; Using the first signal as a radio frequency carrier signal, and obtaining it after performing backscatter modulation and resource mapping on the first signal according to the time-frequency resource configuration of the second signal; Using the first signal as a control signal, and obtaining it after performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal.

18. The method according to any one of claims 15 to 17, characterized in that, The method further includes: The second device receives the first information sent by the first device, or receives the fifth information sent by the third device; Wherein, the first information or the fifth information is used to configure the signal parameters of the same first signal and the signal parameters of the same second signal for the K second devices when the second signal is a reflected amplified signal of the first signal; or, the first information or the fifth information is used to configure the signal parameters of the same first signal and the signal parameters of the same or different second signals for the K second devices when the second signal is a backscatter modulation signal of the first signal, or the first signal is a control signal of the second signal.

19. The method according to claim 18, characterized in that, When the second signal is a reflected amplified signal of the first signal, The signal parameters of the first signal include at least one of the following: The time-domain correlation information of the first signal; The frequency-domain correlation information of the first signal; The code-domain correlation information of the first signal; The type of the first signal; At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal; The power of the first signal; Or, The signal parameters of the second signal include at least one of the following: The reflection coefficient or transmission power of the second signal; The preamble of the second signal, which is associated with the device identifier of the second device; The synchronization sequence of the second signal, which is associated with the device identifier of the second device; The scrambling code of the second signal, which is associated with the device identifier of the second device.

20. The method according to claim 18, wherein, When the second signal is the backscatter modulation signal of the first signal, or the first signal is the control signal of the second signal, The signal parameters of the first signal include at least one of the following: The time-domain correlation information of the first signal; The frequency-domain correlation information of the first signal; The code-domain correlation information of the first signal; The type of the first signal; At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal; The power of the first signal; Alternatively, the signal parameters of the second signal include at least one of the following: The reflection coefficient or transmission power of the second signal; The preamble of the second signal, which is associated with the device identifier of the second device; The synchronization sequence of the second signal, which is associated with the device identifier of the second device; The scrambling code of the second signal, which is associated with the device identifier of the second device; The time-domain correlation information of the second signal; The frequency-domain correlation information of the second signal; The code-domain correlation information of the second signal; The type of the second signal; At least one of the coding method, modulation method, signal waveform, and sequence generation method of the second signal.

21. A method for beam management, wherein, Including: The third device receives K second signals sent by K second devices through the nth receiving beam among N receiving beams; wherein, the K second signals are generated according to a first signal, and the first signal is sent by a first device through the mth transmitting beam among M transmitting beams to the K second devices respectively; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, N is an integer greater than or equal to 1; The third device measures the K second signals.

22. The method according to claim 21, wherein, The measurement values of the K second signals include at least one of the following: The statistical value of the layer 1 reference signal received power L1-RSRP measurement value of the K second signals within a preset time; The statistical value of the layer 1 received signal strength indication L1-RSSI measurement value of the K second signals within a preset time; The statistical value of the layer 1 reference signal received quality L1-RSRQ measurement value of the K second signals within a preset time; The statistical value of the layer 1 signal-to-interference-plus-noise ratio L1-SINR measurement value of the K second signals within a preset time; The statistical value of the layer 1 signal interference ratio L1-SIR measurement value of the K second signals within a preset time; The statistical value of the layer 1 signal-to-noise ratio L1-SNR measurement value of the K second signals within a preset time; The statistical value of the channel state information CSI measurement value of the K second signals within a preset time; The statistical value of the block error rate BLER measurement value of the K second signals within a preset time; The statistical value of the bit error rate BER measurement value of the K second signals within a preset time.

23. The method according to claim 21 or 22, characterized in that, The method further includes: The third device sends beam report information to the first device; Wherein, the beam report information includes at least one of the following: A resource indication for indicating the time-frequency domain resource of the first signal or the second signal; Measurement values of the second signals corresponding to L beam pairs, or difference values between the measurement values of the second signals corresponding to L beam pairs and the maximum or minimum measurement value; where L is related to M or N, or L is related to the size of the reporting resource set; Device identifiers of the K second devices; Resource set identifier of the measurement resource; Index characterizing the set of device capability values; Capability information of the third device; Relevant information indicating the beam range; Semi-persistent CSI reporting configuration identifier.

24. The method according to claim 23, characterized in that, The method further includes: The third device receives the second information sent by the first device; Wherein, the second information is used to configure or indicate the TCI state information of the third device.

25. The method according to claim 23, characterized in that, The third device sends beam report information to the first device, including: The third device sends the beam report information to the first device through at least one of the following: A scheduling request SR dedicated to triggering reporting by the third device; Control channel; Data channel; Available uplink grant; Available configured grant; Random access channel.

26. The method according to any one of claims 21 to 24, characterized in that, The method further includes: The third device receives the third information sent by the first device; wherein, the third information includes at least one of the following: measurement configuration information for performing beam measurement, reporting configuration information for reporting beam report information; there is an association relationship between the reporting configuration information and the measurement configuration information.

27. The method according to claim 26, characterized in that, The reporting configuration information includes at least one of the following: Composition content of the beam report information; Beam reporting method; Number of beam reports allowed to be reported based on non-grouped beam reporting; Number of beam reports allowed to be reported based on grouped beam reporting.

28. The method according to claim 25, wherein, The third device measures the K second signals, including: The third device measures the K second signals using the measurement resources corresponding to the measurement configuration information associated with the reporting configuration information of the beam report information.

29. The method according to any one of claims 21 to 28, wherein, The method further includes: When a first condition is satisfied, the third device reports beam report information; Wherein, the first condition includes at least one of the following: The measurement value of the second signal corresponding to the first measurement resource set is lower than a first threshold; The measurement value of the second signal corresponding to the second measurement resource set is higher than a second threshold; The measurement value of the second signal corresponding to the first measurement resource set is lower than the measurement value of the second signal corresponding to the second measurement resource set; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than a third threshold for a times, where a is an integer greater than 0; The measurement value of the second signal corresponding to the second measurement resource set is continuously higher than a fourth threshold for b times, where b is an integer greater than 0; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than the measurement value of the second signal corresponding to the second measurement resource set for c times, where c is an integer greater than 0; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than a fifth threshold within a first preset time; The measurement value of the second signal corresponding to the second measurement resource set is continuously higher than a sixth threshold within a second preset time; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than the measurement value of the second signal corresponding to the second measurement resource set within a third preset time; Wherein, the first measurement resource set is a set of beams that the third device is using or will use, and the second measurement resource set is a set of candidate beams of the third device.

30. The method according to claim 21 or 22, wherein, The method further includes: The third device determines parameters of a first transmission beam of the first device or parameters of a first reception beam of the third device according to measurement values of the K second signals.

31. The method according to claim 21, wherein, The method further includes: The third device sends fourth information to the first device, and the fourth information is used to configure or indicate TCI state information of the first device.

32. The method according to any one of claims 21 to 31, wherein, The method further includes: The third device sends fifth information to the K second devices; Wherein, when the second signal is a reflected and amplified signal of the first signal, the fifth information is used to configure the same signal parameters of the first signal and the same signal parameters of the second signal for the K second devices; Alternatively, when the second signal is a backscatter modulation signal of the first signal, or the first signal is a control signal of the second signal, the fifth information is used to configure the same signal parameters of the first signal and the same or different signal parameters of the second signal for the K second devices.

33. An apparatus for beam management, wherein, Including: A first transmission module, configured to respectively send a first signal to K second devices through an m-th transmission beam among M transmission beams; wherein, the first signal is used for the K second devices to generate K second signals and send the K second signals to the third device, and the third device respectively receives the K second signals sent by the K second devices through an n-th reception beam among N reception beams and measures the K second signals; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

34. The apparatus according to claim 33, wherein, The first signal is at least one of the following: A beam training reference signal; A signal for providing a radio frequency carrier; A control signal.

35. The device according to claim 33 or 34, characterized in that, The apparatus further includes: A first reception module, configured to receive beam report information sent by the third device; Wherein, the beam report information includes at least one of the following: A resource indication, used to indicate time-frequency domain resources of the first signal or the second signal; Measurement values of second signals corresponding to L beam pairs, or difference values between measurement values of second signals corresponding to L beam pairs and maximum or minimum measurement values; wherein, L is related to M or N, or L is related to the size of a reported resource set; Device identifiers of the K second devices; A resource set identifier of measurement resources; An index representing a set of device capability values; Capability information of the third device; Relevant information indicating a beam range; A semi-persistent channel state information (CSI) reporting configuration identifier.

36. The device according to claim 35, characterized in that, The apparatus further includes: A first determination module, configured to determine parameters of a first transmission beam of the first device or parameters of a first reception beam of the third device according to the beam report information.

37. The device according to claim 35, characterized in that, The apparatus further includes: A third transmission module, configured to send second information to the third device according to the beam report information, where the second information is used to configure or indicate transmission configuration indication (TCI) status information of the third device.

38. A device for beam management, characterized in that, Comprising: A third reception module, configured to receive a first signal sent by a first device via an m-th transmission beam among M transmission beams; where the apparatus for beam management is applied to one of K second devices, the first signal is sent by the first device via the m-th transmission beam to the K second devices respectively, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1; A generation module, configured to generate a second signal according to the first signal; A fifth transmission module, configured to send the second signal to a third device; where the second signal is used for the third device to measure the K second signals respectively sent by the K second devices after receiving the K second signals via an n-th reception beam among N reception beams; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

39. The device according to claim 38, characterized in that, The generation method of the second signal includes at least one of the following: Obtained by reflecting the first signal according to a configured reflection coefficient; Obtained by performing all-ones backscatter modulation on the first signal; Using the first signal as a radio frequency carrier signal, and obtained by performing backscatter modulation and resource mapping on the first signal according to the time-frequency resource configuration of the second signal; Using the first signal as a control signal, and obtained by performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal.

40. A device for beam management, characterized in that, Comprising: A fifth reception module, configured to receive K second signals respectively sent by K second devices via an n-th reception beam among N reception beams; where the K second signals are generated according to a first signal, and the first signal is sent by a first device via an m-th transmission beam among M transmission beams to the K second devices respectively; 1 ≤ m ≤ M, M is an integer greater than or equal to 1, K is an integer greater than 1; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1; A measurement module, configured to measure the K second signals.

41. The device according to claim 40, characterized in that, The measurement values of the K second signals include at least one of the following: The statistical value of the L1-RSRP measurement values of the K second signals within a preset time; The statistical value of the L1-RSSI measurement values of the K second signals within a preset time; The statistical value of the L1-RSRQ measurement values of the K second signals within a preset time; The statistical value of the L1-SINR measurement values of the K second signals within a preset time; The statistical value of the L1-SIR measurement values of the K second signals within a preset time; The statistical value of the L1-SNR measurement values of the K second signals within a preset time; The statistical value of the CSI measurement values of the K second signals within a preset time; The statistical value of the BLER measurement values of the K second signals within a preset time; The statistical value of the BER measurement values of the K second signals within a preset time.

42. The device according to claim 40 or 41, characterized in that, The apparatus further includes: A sixth transmission module, configured to transmit beam report information to the first device; Wherein, the beam report information includes at least one of the following: A resource indication, configured to indicate the time-frequency domain resources of the first signal or the second signal; Measurement values of the second signal corresponding to L beam pairs, or difference values between the measurement values of the second signal corresponding to L beam pairs and the maximum or minimum measurement values; wherein, the L is related to the M or the N, or the L is related to the size of the reported resource set; Device identifiers of the K second devices; A resource set identifier of the measurement resources; An index characterizing a set of device capability values; Capability information of the third device; Relevant information indicating a beam range; A semi-persistent CSI reporting configuration identifier.

43. The device according to any one of claims 40 to 42, characterized in that, The apparatus further includes: A reporting module, configured to report beam report information when a first condition is met; Wherein, the first condition includes at least one of the following: The measurement value of the second signal corresponding to the first measurement resource set is lower than a first threshold; The measurement value of the second signal corresponding to the second measurement resource set is higher than a second threshold; The measurement value of the second signal corresponding to the first measurement resource set is lower than the measurement value of the second signal corresponding to the second measurement resource set; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than a third threshold for a times, where a is an integer greater than 0; The measurement value of the second signal corresponding to the second measurement resource set is continuously higher than a fourth threshold for b times, where b is an integer greater than 0; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than the measurement value of the second signal corresponding to the second measurement resource set for c times, where c is an integer greater than 0; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than a fifth threshold within a first preset time; The measurement value of the second signal corresponding to the second measurement resource set is continuously higher than a sixth threshold within a second preset time; The measurement value of the second signal corresponding to the first measurement resource set is continuously lower than the measurement value of the second signal corresponding to the second measurement resource set within a third preset time; Wherein, the first measurement resource set is a beam set that the third device is using or will use, and the second measurement resource set is a candidate beam set of the third device.

44. A communication device, characterized in that, Including a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the beam management method according to any one of claims 1 to 14, or implements the steps of the beam management method according to any one of claims 15 to 20, or implements the steps of the beam management method according to any one of claims 21 to 32.

45. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, it implements the steps of the beam management method according to any one of claims 1 to 14, or implements the steps of the beam management method according to any one of claims 15 to 20, or implements the steps of the beam management method according to any one of claims 21 to 32.

Images