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 a first device sends a first signal to K second devices through the mth sending beam in M sending beams, 1 < = m < = M, M is an integer greater than or equal to 1, and M is an integer greater than or equal to 1; k is an integer greater than 1; k second signals sent by the K second devices are received through the nth receiving beam in N receiving beams, the second signals are generated according to the first signals, n is larger than or equal to 1 and smaller than or equal to N, and N is an integer larger than or equal to 1; measuring the K second signals to obtain a measurement value; and determining a parameter of a first sending beam or a first receiving beam of the first device according to the measurement value.

Description

Technical Field

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

[0002] In related technologies, for beam management, usually 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 backscatter communication, 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 ability to measure signals and report signals. In this case, how to implement beam management under the condition that 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 beam management method, apparatus, communication device, and readable storage medium, which can solve the problem of how to implement beam management under the condition that a single beam covers multiple devices without signal measurement and signal reporting capabilities.

[0004] In a first aspect, a beam management method 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, where 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0006] The first device receives K second signals sent by the K second devices respectively through the n-th receiving beam among N receiving beams, where the second signal is generated according to the first signal, 1 ≤ n ≤ N, and N is an integer greater than or equal to 1;

[0007] The first device measures the K second signals to obtain measurement values;

[0008] The first device determines parameters of the first sending beam or the first receiving beam of the first device according to the measurement values.

[0009] In a second aspect, a beam management method is provided, which is executed by a second device. The method includes:

[0010] The second device receives a first signal sent by the first device via the m-th transmission beam among the M transmission beams; wherein, the second device is one of the 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;

[0011] The second device generates a second signal according to the first signal;

[0012] The second device sends the second signal to the first device; wherein, the second signal is used for the first device to measure the K second signals sent by the K second devices respectively after receiving them via the n-th reception beam among the N reception beams, and determine the parameters of the first transmission beam or the first reception beam of the first device according to the measurement values; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

[0013] In a third aspect, a beam management apparatus is provided, which is applied to a first device and includes:

[0014] A first transmission module, configured to send a first signal to K second devices respectively via the m-th transmission beam among the M transmission beams, 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0015] A first reception module, configured to receive K second signals sent by the K second devices respectively via the n-th reception beam among the N reception beams, where the second signal is generated according to the first signal; 1 ≤ n ≤ N, N is an integer greater than or equal to 1;

[0016] A measurement module, configured to measure the K second signals to obtain measurement values;

[0017] A determination module, configured to determine the parameters of the first transmission beam or the first reception beam of the first device according to the measurement values.

[0018] In a fourth aspect, a beam management apparatus is provided, which is applied to a second device and includes:

[0019] A second reception module, configured to receive a first signal sent by a first device via the m-th transmission beam among the M transmission beams; wherein, the beam management apparatus is applied to one of the 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;

[0020] A generation module, configured to generate a second signal according to the first signal;

[0021] A third sending module, configured to send the second signal to the first device; wherein, the second signal is used for the first device to measure the K second signals sent by the K second devices after receiving them respectively through the n-th receiving beam among the N receiving beams, and determine the parameters of the first sending beam or the first receiving beam of the first device according to the measurement values; 1≤n≤N, and N is an integer greater than or equal to 1.

[0022] In a fifth aspect, a first device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0023] In a sixth aspect, a first device is provided, including a processor and a communication interface. The communication interface is configured to send a first signal to K second devices respectively through the m-th sending beam among M sending beams, 1≤m≤M, M is an integer greater than or equal to 1, and K is an integer greater than 1; receive K second signals sent by the K second devices respectively through the n-th receiving beam among N receiving beams, the second signal is generated according to the first signal, 1≤n≤N, and N is an integer greater than or equal to 1; the processor is configured to measure the K second signals to obtain measurement values; and determine the parameters of the first sending beam or the first receiving beam of the first device according to the measurement values.

[0024] In a seventh aspect, a second device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0025] In an eighth aspect, a second device is provided, including a processor and a communication interface. The communication interface is configured to receive a first signal transmitted by a first device via the m-th transmission beam among M transmission beams. The second device is one of K second devices, and the first signal is transmitted by the first device via the m-th transmission beam to the K second devices respectively, where 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1. The processor is configured to generate a second signal based on the first signal. The communication interface is further configured to transmit the second signal to the first device. The second signal is used for the first device to measure the K second signals respectively received via the n-th reception beam among N reception beams after receiving the K second signals transmitted by the K second devices, and to determine the parameters of the first transmission beam or the first reception beam of the first device according to the measurement values, where 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

[0026] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is 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 are implemented.

[0027] In a tenth aspect, a wireless communication system is provided, including: a first device and a second device. The first device can be used to execute the steps of the method described in the first aspect, and the second device can be used to execute the steps of the method described in the second aspect.

[0028] 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 instruction to implement the steps of the method described in the first aspect or the steps of the method described in the second aspect.

[0029] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product is 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.

[0030] In an embodiment of the present application, the first signal is sent to K second devices respectively through the m-th transmitting beam among M transmitting beams, and the K second signals sent by the K second devices are received respectively through the n-th receiving beam among N receiving beams. The K second signals are measured, and according to the measurement values, the parameters of the first transmitting beam or the first receiving beam of the first device are determined, so as to achieve beam management under the condition that a single beam covers multiple devices (such as tag devices) without signal measurement and signal reporting capabilities, thereby meeting the transmission distance and efficiency requirements during the transmission of the multiple devices (such as tag devices). BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a flowchart of a beam management method provided by an embodiment of the present application;

[0032] Figure 2 is a flowchart of another beam management method provided by an embodiment of the present application;

[0033] Figure 3A is one of the schematic diagrams of generating transmitting and receiving beams in Embodiment II of the present application;

[0034] Figure 3B is another schematic diagram of generating transmitting and receiving beams in Embodiment II of the present application;

[0035] Figure 4 is a schematic structural diagram of a beam management device provided by an embodiment of the present application;

[0036] Figure 5 is a schematic structural diagram of another beam management device provided by an embodiment of the present application;

[0037] Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. 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.

[0039] The terms "first", "second", etc. in this 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 this 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 category, without limiting the number of objects. For example, the first object can be one or multiple. In addition, "or" in this 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 an "or" relationship between the associated objects before and after.

[0040] The term "indication" in this 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 receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver 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.

[0041] It is worth noting 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, and the described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses NR terms 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 (6 thGeneration, 6G) communication system.

[0042] To facilitate the understanding of the embodiments of the present application, the following content is first described.

[0043] Backscatter Communication (BSC) refers to the use of radio frequency signals from other devices or the environment by backscatter communication devices 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:

[0044] - Antenna unit: Used to receive radio frequency signals and control commands, and at the same time used to transmit modulated backscatter signals.

[0045] - 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 the 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 powers all other modules in the device.

[0046] - Microcontroller: Includes controlling baseband signal processing, energy storage or data scheduling status, switch switching, system synchronization, etc.

[0047] - Signal receiving module: Used to demodulate control commands or data sent by the backscatter communication receiver or other network nodes.

[0048] - Coding and modulation module: Performs channel coding and signal modulation under the control of the controller, and realizes modulation by selecting different load impedances through a selection switch under the control of the controller.

[0049] - Memory or sensing module: Used to store the identification ID information, location information or sensing data of the device.

[0050] 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.

[0051] Optionally, the basic constituent modules and main functions of the backscatter communication receiver include:

[0052] - Antenna unit: Used to receive modulated backscatter signals.

[0053] - Backscatter signal detection module: used to detect the backscatter signals sent by the backscatter communication transmitter, including but not limited to ASK detection, PSK detection, FSK detection, QAM detection, etc.

[0054] - Demodulation and decoding module: demodulates and decodes the detected signals to recover the original information stream.

[0055] 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:

[0056]

[0057] where Z0 is the antenna characteristic impedance; Z1 is the load impedance; j represents the imaginary unit, and θ T represents the phase. Assuming the incident signal is represented as S in (t), then the output signal is S out (t) = S in (t)|Γ|e jθT . Therefore, corresponding amplitude modulation, frequency modulation, or phase modulation can be achieved by reasonably controlling the reflection coefficient. 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.

[0058] In one implementation, according to the tag capabilities and the sources of capabilities, tags can be classified into:

[0059] - C1 / C2 tags: Passive tags, which obtain energy from the electromagnetic waves sent by the RFID reader / writer and can only send data outward in the form of backscatter communication;

[0060] - C3 tags: Semi-passive tags. The energy sources such as the tag's own battery only supply power to 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 only send data outward in the form of backscatter communication;

[0061] - C4 tags: Active tags, which actively send data relying on their own energy sources such as batteries.

[0062] In another implementation, the tags can be classified into:

[0063] - Device A: The tag is a passive tag without a storage capacitor / battery, powered by a Radio Frequency (RF) signal. The received RF signal serves as the power signal for the rectifier. It does not have the ability to generate a carrier and relies on RF as the radio frequency carrier for backscatter communication transmission, with the lowest power consumption.

[0064] - Device B: The tag is a semi - passive tag with a storage capacitor / battery, powered by a non - RF signal. Optionally, it has a PA / LNA or other active devices. It does not have the ability to generate a carrier and relies on RF as the radio frequency carrier for backscatter communication transmission, with the second - lowest power consumption.

[0065] - Device C: The tag is an active tag with a storage capacitor / battery, powered by a non - RF signal, and has the ability to generate a carrier, with the highest power consumption.

[0066] Optionally, the solutions in this application can be applied to LTE systems, 5G NR systems, and NR evolution systems, such as 6G systems and 6G evolution 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.

[0067] Next, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, the beam management method, apparatus, communication device, and readable storage medium provided by the embodiments of this application will be described in detail.

[0068] 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, the method includes the following steps:

[0069] Step 11: The first device sends a first signal to K second devices respectively through the m - th transmitting beam among M transmitting beams, where 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0070] Step 12: The first device receives K second signals sent by the K second devices respectively through the n - th receiving beam among N receiving beams. The second signal is generated based on the first signal, where 1 ≤ n ≤ N, and N is an integer greater than or equal to 1;

[0071] Step 13: The first device measures the K second signals to obtain measurement values;

[0072] Step 14: The first device determines the parameters of the first transmission beam or the first reception beam of the first device according to the measurement value.

[0073] In the embodiments of the present application, the first device is both a radio frequency source / transmission device and a reception device, and may be, but is not limited to, a device with configuration or scheduling functions such as a reader, a radio frequency power supply device, a base station, etc. 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).

[0074] Optionally, the K second devices may belong to a device group (Group) and perform the same operation; 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 value of K is large, multiple second devices can send information while multiple other second devices receive information.

[0075] Optionally, 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. When performing the above Step 14, the parameters of only the first transmission beam of the first device may be determined, or the parameters of only the first reception beam of the first device may be determined, or the parameters of the first transmission beam and the first reception beam of the first device may be determined.

[0076] Optionally, when performing beam management using the above M transmission beams and N reception beams, a traversal beam training method may be adopted. For example, first fix one transmission beam each time and find the optimal reception beam, and then use the optimal reception beam to train the optimal transmission training; or first fix one reception beam each time and find the optimal transmission beam, and then use the optimal transmission beam to train the optimal reception training; or a round-robin beam training method may be adopted, that is, use each transmission beam and each reception beam to transmit and receive information respectively, and select the optimal transmission beam and reception beam therefrom.

[0077] Optionally, after determining the parameters of the first transmission beam or the first reception beam of the first device, the first device can use the first transmission beam to send information and use the first reception beam to receive information.

[0078] In the embodiment of the present application, the first signal is sent to K second devices respectively through the m-th transmission beam among M transmission beams, and the K second signals sent by the K second devices are received respectively through the n-th reception beam among N reception beams. The K second signals are measured, and based on the measurement values, the parameters of the first transmission beam or the first reception beam of the first device are determined, which can achieve beam management under the condition that a single beam covers multiple devices (such as tag devices) without signal measurement and signal reporting capabilities, so as to meet the transmission distance and efficiency requirements during the transmission of the multiple devices (such as tag devices).

[0079] 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, that is, if the time-domain resources of the first signal corresponding to the m-th transmission 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 transmission beam belong to the same resource set, so as to improve the accuracy of beam management. The first time window can be preset based on actual requirements, and no limitation is made thereto.

[0080] 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 of beam management.

[0081] Optionally, the generation method of the second signal includes at least one of the following:

[0082] Obtained by reflecting the first signal according to the configured reflection coefficient; that is, the 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 (such as a Reader) sends the first signal and the time when it receives the second signal are within a specified time window;

[0083] Obtained by performing all-ones backscatter modulation on the first signal; the 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 (such as a Reader) sends the first signal and the time when it 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;

[0084] It is obtained by using the first signal as a 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 resource of the second signal is the single-sideband or double-sideband frequency shift of the frequency domain resource of the first signal in the frequency domain, and the time when the first device (such as a Reader) sends the first signal and the time when it receives the second signal are within a specified time window;

[0085] It is obtained by using the first signal as a 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.

[0086] Optionally, the first signal may be, but is not limited to, at least one of the following:

[0087] Beam training reference signal;

[0088] A signal for providing a radio frequency carrier, and at this time the second signal is a reference signal;

[0089] Control signal, that is, a signal for controlling or instructing the second device to generate the second signal.

[0090] Optionally, the beam training reference signal includes, but is not limited to, at least one of the following:

[0091] Synchronization Signal Block (SSB) signal;

[0092] Sounding Reference Signal (SRS);

[0093] Channel State Information Reference Signal (CSI-RS);

[0094] Phase-tracking Reference Signal (TRS);

[0095] Positioning Reference Signal (PRS);

[0096] Layer 1 (L1) reference signal, such as other layer 1 reference signals except the above reference signals.

[0097] Optionally, the beam management method in this embodiment may further include:

[0098] 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 devices can accurately transmit and receive signals.

[0099] 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:

[0100] 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.;

[0101] The 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.;

[0102] The code-domain related information of the first signal, such as including an Orthogonal Cover Code (OCC) sequence or an OCC structure, etc.;

[0103] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0104] At least one of the coding method, modulation method, signal waveform and sequence generation method of the first signal;

[0105] The power of the first signal.

[0106] Optionally, when the second signal is the reflected amplified signal of the first signal, the signal parameters of the second signal include at least one of the following:

[0107] The reflection coefficient or transmission power of the second signal;

[0108] The preamble of the second signal, where the preamble 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;

[0109] The synchronization sequence of the second signal, where the synchronization sequence 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;

[0110] 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.

[0111] 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 but are not limited to at least one of the following:

[0112] 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.;

[0113] The frequency-domain correlation 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.;

[0114] The code-domain correlation information of the first signal, such as including OCC sequences or OCC structures, etc.;

[0115] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0116] At least one of the coding method, modulation method, signal waveform and sequence generation method of the first signal;

[0117] The power of the first signal.

[0118] 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:

[0119] The reflection coefficient or transmission power of the second signal;

[0120] 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;

[0121] 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;

[0122] 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;

[0123] The time-domain correlation information of the second signal, such as including that the transmission of the second signal is periodic, semi-periodic or aperiodic, and the signal length of the second signal, etc.;

[0124] The frequency-domain correlation information of the second signal, such as including bandwidth, center frequency, frequency points, frequency bands, frequency hopping sequences, Comb size, frequency-domain resource patterns, etc.;

[0125] The code-domain correlation information of the second signal, such as including OCC sequences or OCC structures, etc.;

[0126] The 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] Optionally, when the first device measures the K second signals, the measured values obtained include but are not limited to at least one of the following:

[0130] The statistical value of the Layer 1 Reference Signal Received Power (L1-RSRP) measurement values of the K second signals within a preset time;

[0131] The statistical value of the Layer 1 Received Signal Strength Indication (L1-RSSI) measurement values of the K second signals within a preset time;

[0132] The statistical value of the Layer 1 Reference Signal Received Quality (L1-RSRQ) measurement values of the K second signals within a preset time;

[0133] 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;

[0134] The statistical value of the Layer 1 Signal to Interference Ratio (L1-SIR) measurement values of the K second signals within a preset time;

[0135] The statistical value of the Layer 1 Signal Noise Ratio (L1-SNR) measurement values of the K second signals within a preset time;

[0136] The statistical value of the Channel State Information (CSI) measurement values of the K second signals within a preset time;

[0137] The statistical value of the Block Error Rate (BLER) measurement values of the K second signals within a preset time;

[0138] The statistical value of the Bit Error Ratio (BER) measurement values of the K second signals within a preset time.

[0139] It should be noted that the above preset time can be agreed upon by protocol, pre-configured, etc., and is not limited thereto. The statistical values of the above respective measurement values can be superimposed, such as calculating weighted values, products, or ratios, etc.

[0140] Optionally, the statistical value includes but is not limited to at least one of the following:

[0141] The linear average value in the time domain, frequency domain, or spatial domain;

[0142] The maximum value in the time domain, frequency domain, or spatial domain;

[0143] The weighted value in the time domain, frequency domain, or spatial domain.

[0144] 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:

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

[0146] The radiation direction of the first transmission beam or the first reception beam;

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

[0148] The index of the first transmission beam or the first reception beam;

[0149] The Precoding Matrix Indicator (PMI) of the first transmission beam or the first reception beam;

[0150] The duty cycle of the first transmission beam or the first reception beam;

[0151] The number of transmission antennas of the first transmission beam, or the number of reception antennas of the first reception beam;

[0152] The index of the transmission antennas of the first transmission beam, or the index of the reception antennas of the first reception beam.

[0153] Please refer to Figure 2 , Figure 2 which is a flowchart of a beam management method provided by an embodiment of this application. This method is executed by a second device. As Figure 2 shown, this method includes the following steps:

[0154] Step 21: The second device receives a first signal sent by the first device through the m-th transmission beam among M transmission beams; the second device is one of 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;

[0155] Step 22: The second device generates a second signal according to the first signal;

[0156] Step 23: The second device sends the second signal to the first device; the second signal is used for the first device to measure the K second signals respectively received through the n-th reception beam among N reception beams after receiving the K second signals sent by the K second devices, and determine the parameters of the first transmission beam or the first reception beam of the first device according to the measurement values; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

[0157] In an embodiment of this application, the first device may optionally be, but is not limited to, a device with configuration or scheduling functions such as a reader, a radio frequency power supply device, a base station, etc. The second device may optionally be a tag device, such as a passive tag (i.e., DeviceA), a semi-passive tag (i.e., Device B), or an active tag (i.e., Device C).

[0158] Optionally, the K second devices may belong to a device group (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 quantity of the second devices (such as Device C) is relatively large, that is, the K value is relatively large, multiple second devices can send information while other multiple second devices receive information.

[0159] Optionally, 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.

[0160] Optionally, when performing beam management using the above-mentioned M transmission beams and N reception beams, a traversal beam training method may be adopted. For example, first fix one transmission beam each time and find the optimal reception beam, and then use the optimal reception beam to train the optimal transmission training; or first fix one reception beam each time and find the optimal transmission beam, and then use the optimal transmission beam to train the optimal reception training; a round-robin beam training method may also be adopted, that is, use each transmission beam and each reception beam to transmit and receive information respectively, and select the optimal transmission beam and reception beam therefrom.

[0161] Thus, beam management can be realized under the condition that a single beam covers multiple devices (such as tag devices) without signal measurement and signal reporting capabilities, so as to meet the transmission distance and efficiency requirements during the transmission of multiple devices (such as tag devices).

[0162] 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 (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 of beam management.

[0163] 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 transmitting the first signal and the time for receiving the second signal are within a specified time window, so as to improve the accuracy of beam management.

[0164] Optionally, the generation method of the second signal includes at least one of the following:

[0165] 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 (such as a Reader) transmits the first signal and the time when it receives the second signal are within the specified time window;

[0166] Obtained after performing all-ones backscatter modulation on the first signal; a backscatter signal obtained by performing all-ones modulation with the first signal as the RF 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 (such as a Reader) sends the first signal and the time when it 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.

[0167] Obtained by using the first signal as the RF 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 RF 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 (such as a Reader) sends the first signal and the time when it receives the second signal are within a specified time window.

[0168] 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.

[0169] Optionally, the first signal may be, but is not limited to, at least one of the following:

[0170] Beam training reference signal;

[0171] A signal used to provide an RF carrier, and at this time the second signal is a reference signal;

[0172] Control signal, that is, a signal that controls or instructs the second device to generate the second signal.

[0173] Optionally, the beam training reference signal includes, but is not limited to, at least one of the following:

[0174] Synchronization signal block SSB signal;

[0175] Sounding reference signal SRS;

[0176] Channel state information reference signal CSI-RS;

[0177] Phase tracking reference signal TRS;

[0178] Positioning reference signal PRS;

[0179] Layer 1 reference signal, such as other layer 1 reference signals except the above reference signals.

[0180] Optionally, the beam management method in this embodiment may further include:

[0181] The second device receives the first information sent by the first device; wherein, when the second signal is the reflected amplified signal of the first signal, 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; 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 signal parameters of the same first signal and the signal parameters of the same or different second signals for the K second devices.

[0182] 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:

[0183] The time-domain related 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.;

[0184] The 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.;

[0185] The code-domain related information of the first signal, such as including an Orthogonal Cover Code (OCC) sequence or an OCC structure, etc.;

[0186] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0187] At least one of the coding method, modulation method, signal waveform and sequence generation method of the first signal;

[0188] The power of the first signal.

[0189] Optionally, when the second signal is the reflected amplified signal of the first signal, the signal parameters of the second signal include at least one of the following:

[0190] The reflection coefficient or transmission power of the second signal;

[0191] 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;

[0192] 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;

[0193] 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.

[0194] 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 but are not limited to at least one of the following:

[0195] The time-domain correlation information of the first signal, such as including that the transmission of the first signal is periodic, half-periodic or aperiodic, and the signal length of the first signal, etc.;

[0196] 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.;

[0197] The code-domain correlation information of the first signal, such as including OCC sequence or OCC structure, etc.;

[0198] The type of the first signal; for example, the first signal can be an SRS signal, a newly designed L1 signal, etc.;

[0199] At least one of the coding method, modulation method, signal waveform and sequence generation method of the first signal;

[0200] The power of the first signal.

[0201] 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:

[0202] The reflection coefficient or transmission power of the second signal;

[0203] 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;

[0204] 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;

[0205] 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;

[0206] The time-domain correlation information of the second signal, such as including that the transmission of the second signal is periodic, semi-periodic or aperiodic, and the signal length of the second signal, etc.;

[0207] 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.;

[0208] The code-domain correlation information of the second signal, such as including OCC sequence or OCC structure, etc.;

[0209] The type of the second signal;

[0210] At least one of the modulation method, coding method, signal waveform and sequence generation method of the second signal.

[0211] Optionally, the measurement value includes but is not limited to at least one of the following:

[0212] The statistical value of the layer 1 reference signal received power L1-RSRP measurement value of the K second signals within a preset time;

[0213] The statistical value of the layer 1 received signal strength indication L1-RSSI measurement value of the K second signals within a preset time;

[0214] The statistical value of the layer 1 reference signal received quality L1-RSRQ measurement value of the K second signals within a preset time;

[0215] 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;

[0216] The statistical value of the layer 1 signal interference ratio L1-SIR measurement value of the K second signals within a preset time;

[0217] The statistical value of the layer 1 signal-to-noise ratio L1-SNR measurement value of the K second signals within a preset time;

[0218] The statistical value of the channel state information CSI measurement value of the K second signals within a preset time;

[0219] The statistical value of the block error rate BLER measurement value of the K second signals within a preset time;

[0220] The statistical value of the bit error rate BER measurement value of the K second signals within a preset time.

[0221] 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 various measurement values can be superimposed, such as calculating weighted values, products or ratios, etc.

[0222] Optionally, the statistical value includes, but is not limited to, at least one of the following:

[0223] The linear average value in the time domain, frequency domain, or spatial domain;

[0224] The maximum value in the time domain, frequency domain, or spatial domain;

[0225] The weighted value in the time domain, frequency domain, or spatial domain.

[0226] 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:

[0227] The width of the first transmission beam or the first reception beam;

[0228] The radiation direction of the first transmission beam or the first reception beam;

[0229] The power of the first transmission beam or the first reception beam;

[0230] The index of the first transmission beam or the first reception beam;

[0231] The precoding matrix indicator PMI of the first transmission beam or the first reception beam;

[0232] The duty cycle of the first transmission beam or the first reception beam;

[0233] The number of transmission antennas of the first transmission beam, or the number of reception antennas of the first reception beam;

[0234] The index of the transmission antennas of the first transmission beam, or the index of the reception antennas of the first reception beam.

[0235] The present application will be described below with reference to specific embodiments.

[0236] Embodiment 1

[0237] In this Embodiment 1, a beam selection quality evaluation criterion for a possible first device to determine a first transmission beam or a first reception beam is given.

[0238] In a possible solution, it is determined according to the average value of the second signals sent by K second devices received by the first device. Assume that the first device obtains the l-th measurement value of the signal quality of the K second signals sent through the m-th transmission beam and received through the n-th reception beam, denoted as Then the final measurement value R is:

[0239]

[0240] 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 individually, but the weights configured for different second devices are different), or it 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 determined first transmission beam and first reception beam of the first device are:

[0241]

[0242] In this scheme, by taking the average value of the single signal quality measurement values of K second signals as the beam quality selection criterion, it is relatively simple.

[0243] In another possible scheme, 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 finally obtained measurement value can be defined as:

[0244]

[0245] Among them, represents the measurement value with RSRP as the signal quality measurement value in the above - mentioned scheme, represents the measurement value with SINR as the signal quality measurement value in the above - mentioned scheme, and γ and μ are respectively the weighted values of the measurement values and At this time, the determined first transmission beam and first reception beam of the first device are:

[0246]

[0247] Similarly, T can also be defined m,n as the product, ratio, etc. of the measurement values and ; 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 scheme, by taking 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 comprehensive performance of the selected beam is better, and there may be no problem of ping - pong handover.

[0248] Embodiment 2

[0249] In this second embodiment, the beam management process for different values of M and N is given.

[0250] (1) M ≥ 2 transmitting beams, N = 1 receiving beam.

[0251] This scenario is for the scenario where the downlink transmission coverage of Reader->Tag is limited. The Reader sends the first signal to K second devices through the m-th (1 ≤ m ≤ M) transmitting beam (i.e., one of the M transmitting beams); the K second devices generate the second signal based on the received first signal and send it to the first device; the first device receives the K second signals based on 1 fixed receiving beam (or an omnidirectional receiving antenna). Among them, the first signals sent from the M transmitting beams belong to the same resource set. Therefore, the first device needs to select 1 transmitting beam from the M transmitting beams to improve the downlink transmission coverage of the K second devices.

[0252] 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 first 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 first device receives the second signals sent by the K second devices on the same frequency domain resource as the first signal is sent, determines the measurement value, and determines the optimal transmitting beam according to the method in the first embodiment above.

[0253] Alternatively, the second signal sent by the second device can be a backscatter modulation signal after baseband multiplication modulation of the received first signal, that is, the first signal is the RF carrier signal of the second signal at this time, 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 frequency. Similarly, 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 first device receives the second signals sent by the K second devices within the transmission time window and on the frequency domain resource of the second signal, determines the measurement value, and determines the optimal transmitting beam according to the method in the first embodiment above.

[0254] The beam training overhead in this scenario is the number of training times of M transmitting beams.

[0255] (2) M = 1 transmitting beam, N ≥ 2 receiving beams.

[0256] This scenario is for the scenario where the uplink transmission coverage from Tag to Reader is limited. The Reader sends a first signal to K second devices through one fixed transmission beam or an omnidirectional antenna; the K second devices generate a second signal based on the received first signal and send it to the first device; the first device receives the K second signals through the nth (1 ≤ n ≤ N) receiving beam. Therefore, the first device needs to select one of the N receiving beams to receive the signals of the subsequent K second devices. 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 training times for the N receiving beams.

[0257] (3) M ≥ 2 transmission beams, N ≥ 2 receiving beams.

[0258] This scenario is for the scenario where both the downlink transmission coverage from Reader to Tag and the uplink transmission coverage from Tag to Reader are limited. The Reader sends a first signal to K second devices through the mth (1 ≤ m ≤ M) transmission beam; the K second devices generate a second signal based on the received first signal and send it to the first device; the first device receives the K second signals through the nth (1 ≤ n ≤ N) receiving beam. Therefore, the first device needs to select a transmission beam from the M transmission beams to send the subsequent first signal, and needs to select a receiving beam from the N receiving beams to receive the signals of the subsequent K second devices. 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 receiving beams belong to the same time-frequency resource set.

[0259] The beam training overhead in this scenario is the number of training times for the M transmission beams and the number of training times for the N receiving beams. Specifically, it can be any of the following:

[0260] (a) In the case of traversing beam training, M × N times of beam training are required.

[0261] (b) If one transmission beam is fixed each time to find the optimal receiving beam, and then the optimal receiving beam is used to train the optimal transmission beam, M + N times of beam training are required. Or, if one receiving beam is fixed each time to find the optimal transmission beam, and then the optimal transmission beam is used to train the optimal receiving beam, M + N times of beam training are also required.

[0262] (c) If M = N, the beam consistency and beam reciprocity principles can be utilized for training, that is, only M transmit beams or only N receive beams need to be trained, and the selected transmit beams / receive beams are used for receive beams / transmit beams. Referring to the existing NR system, analog beamforming is transmitted over the full bandwidth, and each element in each polarization direction on the panel of each high-frequency antenna array can only transmit analog beams in a time-division multiplexing manner; the shaping weights of the analog beams are achieved by adjusting the parameters of devices such as RF front-end phase shifters; and a polling method is used to train the analog beamforming vectors, that is, the elements in each polarization direction of each antenna panel sequentially transmit training signals (i.e., candidate shaping vectors) at a scheduled time in a time-division multiplexing manner, and the terminal feeds back a beam report after measurement for the network side to use this training signal for analog beam transmission during the next data transmission. However, in the backscatter communication system, since the Reader is in a full-duplex operating mode at this time, the generation of transmit beams and receive beams and beam consistency / reciprocity will be different from those of the existing NR system. Existing solutions include:

[0263] (I) Add a circulator or a directional coupler to each antenna. At this time, it can be considered that beam consistency holds, that is, transmit beams and receive beams can be generated on the same antenna at this time;

[0264] (II) Generate transmit beams and receive beams with antennas spatially isolated from each other, and self-calibrate or compensate for the deviation between the transmit beams and the receive beams. One method is: as Figure 3A shown, generate transmit beams and receive beams with different sub-arrays or antennas on the Panel respectively, and compensate for the deviation between the transmit beams and the receive beams through a calibration algorithm, and make the beam parameters (such as beam width, beam direction, beam gain, etc.) of the transmit beams and the receive beams as identical as possible. Another method is: as Figure 3B shown, generate transmit beams and receive beams with antennas spaced apart on the same array, and also calibrate the transmit beams and the receive beams through a calibration algorithm, so that the beam parameters of the transmit beams and the receive beams are as identical as possible.

[0265] In the beam management method provided by the embodiments of this application, the execution subject 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.

[0266] Please refer to Figure 4 , Figure 4 which is a schematic structural diagram of a beam management device provided by the embodiments of this application. This device is applied to a first device. As Figure 4 shown, the beam management device 40 includes:

[0267] The first transmission module 41 is configured to transmit a first signal to K second devices respectively through the m-th transmission beam among M transmission beams, where 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1;

[0268] The first reception module 42 is configured to receive K second signals transmitted by the K second devices respectively through the n-th reception beam among N reception beams, where the second signal is generated based on the first signal, 1 ≤ n ≤ N, and N is an integer greater than or equal to 1;

[0269] The measurement module 43 is configured to measure the K second signals to obtain measurement values;

[0270] The determination module 44 is configured to determine parameters of the first transmission beam or the first reception beam of the first device according to the measurement values.

[0271] 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.

[0272] 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.

[0273] Optionally, the generation method of the second signal includes at least one of the following:

[0274] Obtained by reflecting the first signal according to a configured reflection coefficient;

[0275] Obtained by performing all-ones backscatter modulation on the first signal;

[0276] Using the first signal as a 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;

[0277] Using the first signal as a control signal and performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal.

[0278] Optionally, the first signal is at least one of the following:

[0279] Beam training reference signal;

[0280] A signal for providing a radio frequency carrier;

[0281] Control signal.

[0282] Optionally, the beam training reference signal includes at least one of the following:

[0283] Synchronization signal block SSB signal;

[0284] Sounding reference signal SRS;

[0285] Channel state information reference signal CSI-RS;

[0286] Phase tracking reference signal TRS;

[0287] Positioning reference signal PRS;

[0288] Layer 1 reference signal.

[0289] Optionally, the beam management device 40 further includes:

[0290] A second sending module, configured to send first information to the K second devices; wherein, when the second signal is a reflected 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 a backscatter modulation signal of the first signal, or the first signal is a 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.

[0291] Optionally, when the second signal is a reflected amplified signal of the first signal,

[0292] The signal parameters of the first signal include at least one of the following:

[0293] The time-domain correlation information of the first signal;

[0294] The frequency-domain correlation information of the first signal;

[0295] The code-domain correlation information of the first signal;

[0296] The type of the first signal;

[0297] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0298] The power of the first signal;

[0299] Or, the signal parameters of the second signal include at least one of the following:

[0300] The reflection coefficient or transmission power of the second signal;

[0301] The preamble of the second signal, and the preamble is associated with the device identifier of the second device;

[0302] The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0303] The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device.

[0304] 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,

[0305] The signal parameters of the first signal include at least one of the following:

[0306] The time-domain correlation information of the first signal;

[0307] The frequency-domain correlation information of the first signal;

[0308] The code-domain correlation information of the first signal;

[0309] The type of the first signal;

[0310] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0311] The power of the first signal;

[0312] Alternatively, the signal parameters of the second signal include at least one of the following:

[0313] The reflection coefficient or transmission power of the second signal;

[0314] The preamble of the second signal, where the preamble is associated with the device identifier of the second device;

[0315] The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0316] The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device;

[0317] The time-domain correlation information of the second signal;

[0318] The frequency-domain correlation information of the second signal;

[0319] The code-domain correlation information of the second signal;

[0320] The type of the second signal;

[0321] At least one of the modulation method, coding method, signal waveform, and sequence generation method of the second signal.

[0322] Optionally, the measurement value includes at least one of the following:

[0323] The statistical value of the L1-RSRP measurement values of the K second signals within a preset time;

[0324] The statistical value of the L1-RSSI measurement values of the K second signals within a preset time;

[0325] The statistical value of the L1-RSRQ measurement values of the K second signals within a preset time;

[0326] The statistical value of the L1-SINR measurement values of the K second signals within a preset time;

[0327] The statistical value of the L1-SIR measurement values of the K second signals within a preset time;

[0328] The statistical value of the L1-SNR measurement values of the K second signals within a preset time;

[0329] The statistical value of the CSI measurement values of the K second signals within a preset time;

[0330] The statistical value of the BLER measurement values of the K second signals within a preset time;

[0331] The statistical value of the BER measurement values of the K second signals within a preset time.

[0332] Optionally, the statistical value includes at least one of the following:

[0333] The linear average value in the time domain, frequency domain or spatial domain;

[0334] The maximum value in the time domain, frequency domain or spatial domain;

[0335] The weighted value in the time domain, frequency domain or spatial domain.

[0336] Optionally, the parameters of the first transmission beam or the first reception beam include at least one of the following:

[0337] The width of the first transmission beam or the first reception beam;

[0338] The radiation direction of the first transmission beam or the first reception beam;

[0339] The power of the first transmission beam or the first reception beam;

[0340] The index of the first transmission beam or the first reception beam;

[0341] The precoding matrix indicator PMI of the first transmission beam or the first reception beam;

[0342] The duty cycle of the first transmission beam or the first reception beam;

[0343] The number of transmitting antennas of the first transmitting beam, or the number of receiving antennas of the first receiving beam;

[0344] The index of the transmitting antennas of the first transmitting beam, or the index of the receiving antennas of the first receiving beam.

[0345] The beam management device 40 provided by 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, it will not be elaborated here.

[0346] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a beam management device provided by the embodiments of the present application. This device is applied to a second device, such as Figure 5 shown, the beam management device 50 includes:

[0347] A second receiving module 51, configured to receive a first signal sent by a first device through the m-th transmitting beam among M transmitting beams; wherein, the beam management device is applied to one of K second devices, and the first signal is sent by the first device through 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;

[0348] A generating module 52, configured to generate a second signal according to the first signal;

[0349] A third transmitting module 53, configured to send the second signal to the first device; wherein, the second signal is used for the first device to measure the K second signals respectively received through the n-th receiving beam among N receiving beams of the K second devices, and determine the parameters of the first transmitting beam or the first receiving beam of the first device according to the measurement values; 1 ≤ n ≤ N, and N is an integer greater than or equal to 1.

[0350] 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.

[0351] 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.

[0352] Optionally, the generating manner of the second signal includes at least one of the following:

[0353] Obtained by reflecting the first signal according to the configured reflection coefficient;

[0354] Obtained after performing all - one backscatter modulation on the first signal;

[0355] Obtained by using the first signal as a 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;

[0356] Obtained by using the first signal as a control signal and performing signal modulation and resource mapping according to the time - frequency resource configuration of the second signal.

[0357] Optionally, the first signal is at least one of the following:

[0358] Beam training reference signal;

[0359] Signal for providing a radio - frequency carrier;

[0360] Control signal.

[0361] Optionally, the beam management device 50 further includes:

[0362] A third receiving module, configured to receive the first information sent by the first device;

[0363] 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.

[0364] Optionally, when the second signal is the reflected and amplified signal of the first signal,

[0365] The signal parameters of the first signal include at least one of the following:

[0366] Time - domain correlation information of the first signal;

[0367] Frequency - domain correlation information of the first signal;

[0368] Code - domain correlation information of the first signal;

[0369] Type of the first signal;

[0370] At least one of the encoding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0371] Power of the first signal;

[0372] Alternatively, the signal parameters of the second signal include at least one of the following:

[0373] The reflection coefficient or transmission power of the second signal;

[0374] The preamble of the second signal, where the preamble is associated with the device identifier of the second device;

[0375] The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0376] The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device.

[0377] 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,

[0378] The signal parameters of the first signal include at least one of the following:

[0379] The time-domain correlation information of the first signal;

[0380] The frequency-domain correlation information of the first signal;

[0381] The code-domain correlation information of the first signal;

[0382] The type of the first signal;

[0383] At least one of the coding method, modulation method, signal waveform, and sequence generation method of the first signal;

[0384] The power of the first signal;

[0385] Alternatively, the signal parameters of the second signal include at least one of the following:

[0386] The reflection coefficient or transmission power of the second signal;

[0387] The preamble of the second signal, where the preamble is associated with the device identifier of the second device;

[0388] The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device;

[0389] The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device;

[0390] The time-domain correlation information of the second signal;

[0391] The frequency-domain correlation information of the second signal;

[0392] Code domain related information of the second signal;

[0393] Type of the second signal;

[0394] At least one of the modulation method, coding method, signal waveform, and sequence generation method of the second signal.

[0395] Optionally, the measurement value includes at least one of the following:

[0396] Statistical value of the L1-RSRP measurement values of the K second signals within a preset time;

[0397] Statistical value of the L1-RSSI measurement values of the K second signals within a preset time;

[0398] Statistical value of the L1-RSRQ measurement values of the K second signals within a preset time;

[0399] Statistical value of the L1-SINR measurement values of the K second signals within a preset time;

[0400] Statistical value of the L1-SIR measurement values of the K second signals within a preset time;

[0401] Statistical value of the L1-SNR measurement values of the K second signals within a preset time;

[0402] Statistical value of the CSI measurement values of the K second signals within a preset time;

[0403] Statistical value of the BLER measurement values of the K second signals within a preset time;

[0404] Statistical value of the BER measurement values of the K second signals within a preset time.

[0405] Optionally, the statistical value includes at least one of the following:

[0406] Linear average value in the time domain, frequency domain, or spatial domain;

[0407] Maximum value in the time domain, frequency domain, or spatial domain;

[0408] Weighted value in the time domain, frequency domain, or spatial domain.

[0409] Optionally, the parameters of the first transmission beam or the first reception beam include at least one of the following:

[0410] Width of the first transmission beam or the first reception beam;

[0411] Radiation direction of the first transmission beam or the first reception beam;

[0412] The power of the first transmission beam or the first reception beam;

[0413] The index of the first transmission beam or the first reception beam;

[0414] The precoding matrix indicator (PMI) of the first transmission beam or the first reception beam;

[0415] The duty cycle of the first transmission beam or the first reception beam;

[0416] The number of transmission antennas of the first transmission beam, or the number of reception antennas of the first reception beam;

[0417] The index of the transmission antennas of the first transmission beam, or the index of the reception antennas of the first reception beam.

[0418] The beam management apparatus 50 provided in 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.

[0419] As Figure 6 shown, the embodiments of the present application further provide a communication device 60, including a processor 61 and a memory 62. A program or instruction that can run on the processor 61 is stored on the memory 62. For example, when the communication device 60 is the first device, when the program or instruction is executed by the processor 61, 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 60 is the second device, when the program or instruction is executed by the processor 61, it implements each step of the beam management method embodiment shown above Figure 2 and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0420] The embodiments of the present application further provide a readable storage medium. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, it implements each process of the beam management method embodiment shown above, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0421] Wherein, the processor is the processor in the terminal described in the above embodiments. 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.

[0422] Another 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 configured to run programs or instructions to implement each process of the above-described embodiment of the beam management method, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0423] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0424] Another 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 above-described embodiment of the beam management method, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0425] An embodiment of the present application further provides a communication system, including: a first device and a second device. The first device can be used to execute the steps of the beam management method as described above Figure 1 shown, and the second device can be used to execute the steps of the beam management method as described above Figure 2 shown.

[0426] It should be noted that in this article, the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a 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.

[0427] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods 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 disc, 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.

[0428] 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 implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of implementation manners without departing from the purpose of the present application and the scope protected by the claims. All these implementation manners fall within the protection scope of the present application.

Claims

1. A beam management method, 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, where 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1; The first device receives K second signals sent by the K second devices respectively through the n-th reception beam among N reception beams, where the second signal is generated based on the first signal, 1 ≤ n ≤ N, and N is an integer greater than or equal to 1; The first device measures the K second signals to obtain measurement values; The first device determines parameters of the first transmission beam or the first reception beam of the first device according to the measurement values.

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 or 2, 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 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 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 performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal.

5. The method according to any one of claims 1 to 4, 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.

6. The method according to claim 5, characterized in that, The beam training reference signal includes at least one of the following: A synchronization signal block SSB signal; A sounding reference signal SRS; A channel state information reference signal CSI-RS; A phase tracking reference signal TRS; A positioning reference signal PRS; A layer 1 reference signal.

7. The method according to any one of claims 1 to 6, 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 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 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 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.

8. The method according to claim 7, 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 related information of the first signal; The frequency-domain related information of the first signal; The code-domain related 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, where the preamble is associated with the device identifier of the second device; The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device; The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device.

9. The method according to claim 7, 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; 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, where the preamble is associated with the device identifier of the second device; The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device; The scrambling code of the second signal, where the scrambling code 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 modulation method, coding method, signal waveform, and sequence generation method of the second signal.

10. The method according to any one of claims 1 to 9, wherein, The measurement values include at least one of the following: The statistical value of the layer 1 reference signal received power (L1-RSRP) measurement values of the K second signals within a preset time; The statistical value of the layer 1 received signal strength indication (L1-RSSI) measurement values of the K second signals within a preset time; The statistical value of the layer 1 reference signal received quality (L1-RSRQ) measurement values 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 values of the K second signals within a preset time; The statistical value of the layer 1 signal interference ratio (L1-SIR) measurement values of the K second signals within a preset time; The statistical value of the layer 1 signal-to-noise ratio (L1-SNR) measurement values of the K second signals within a preset time; The statistical value of the channel state information (CSI) measurement values of the K second signals within a preset time; The statistical value of the block error rate (BLER) measurement values of the K second signals within a preset time; The statistical value of the bit error rate (BER) measurement values of the K second signals within a preset time.

11. The method according to claim 10, wherein The statistical values include at least one of the following: The linear average in the time domain, frequency domain, or spatial domain; The maximum value in the time domain, frequency domain, or spatial domain; The weighted value in the time domain, frequency domain, or spatial domain.

12. The method according to any one of claims 1 to 11, wherein The parameters of the first transmit beam or first receive beam include at least one of the following: The width of the first transmit beam or first receive beam; The radiation direction of the first transmit beam or first receive beam; The power of the first transmit beam or first receive beam; The index of the first transmit beam or first receive beam; The precoding matrix indicator (PMI) of the first transmission beam or the first reception beam; The duty cycle of the first transmission beam or the first reception beam; The number of transmission antennas of the first transmission beam, or the number of reception antennas of the first reception beam; The index of the transmission antennas of the first transmission beam, or the index of the reception antennas of the first reception beam.

13. A beam management method, wherein Including: The second device receives a first signal transmitted by the first device through 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 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; The second device generates a second signal according to the first signal; The second device sends the second signal to the first device; wherein, the second signal is used for the first device to measure the K second signals sent by the K second devices respectively after receiving the K second signals through the n-th reception beam among N reception beams, and determine the parameters of the first transmission beam or the first reception beam of the first device according to the measurement values; 1 ≤ n ≤ N, N is an integer greater than or equal to 1.

14. The method according to claim 13, wherein The generation method of the second signal includes at least one of the following: Obtained by reflecting the first signal according to the 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 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 performing signal modulation and resource mapping according to the time-frequency resource configuration of the second signal.

15. The method according to claim 13 or 14, 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.

16. The method according to any one of claims 13 to 15, wherein The method further includes: The second device receives first information sent by the first device; 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 a 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 a backscatter modulation signal of the first signal, or the first signal is a control signal of the second signal.

17. The method according to claim 16, wherein, 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, where the preamble is associated with the device identifier of the second device; The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device; The scrambling code of the second signal, where the scrambling code is associated with the device identifier of the second device.

18. The method according to claim 16, 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; 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, where the preamble is associated with the device identifier of the second device; The synchronization sequence of the second signal, where the synchronization sequence is associated with the device identifier of the second device; The scrambling code of the second signal, where the scrambling code 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 modulation method, coding method, signal waveform, and sequence generation method of the second signal.

19. A beam management device, wherein, Including: A first transmission module, configured to transmit a first signal to K second devices respectively through the m-th transmission beam among M transmission beams, where 1 ≤ m ≤ M, M is an integer greater than or equal to 1, and K is an integer greater than 1; A first reception module, configured to receive K second signals transmitted by the K second devices respectively through the n-th reception beam among N reception beams, where the second signal is generated based on the first signal, 1 ≤ n ≤ N, and N is an integer greater than or equal to 1; A measurement module, configured to measure the K second signals to obtain measurement values; A determination module, configured to determine the parameters of the first transmission beam or the first reception beam of the first device according to the measurement values.

20. The apparatus according to claim 19, 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.

21. The apparatus according to claim 19 or 20, wherein The measurement values 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.

22. A beam management apparatus, wherein Including: A second receiving module, configured to receive a first signal transmitted by a first device via the m-th transmission beam among M transmission beams; wherein, the beam management device is applied to 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; A generating module, configured to generate a second signal according to the first signal; A third transmitting module, configured to transmit the second signal to the first device; wherein, the second signal is used for the first device to measure the K second signals respectively received via the n-th receiving beam among N receiving beams of the K second devices, and determine the parameters of the first transmission beam or the first receiving beam of the first device according to the measurement values; 1≤n≤N, N is an integer greater than or equal to 1.

23. The apparatus according to claim 22, wherein The generating manner 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-1 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.

24. A communication device, wherein 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 12, or implements the steps of the beam management method according to any one of claims 13 to 18.

25. A readable storage medium, wherein 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 12, or implements the steps of the beam management method according to any one of claims 13 to 18.

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