Beam training method, device, terminal device, and network device

Abstract

The present application discloses a beam training method, a device, a terminal device, and a network device. The beam training method of the present application includes a step of measuring at least two reference signals for beam training transmitted by an auxiliary device in at least two transmission modes and obtaining measurement information, the measurement information being for indicating an optimal transmission mode of the auxiliary device, the transmission mode of the auxiliary device being determined by a beam direction and a beam phase of the transmission signal of the auxiliary device, and a step of reporting the measurement information to the network device.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from a Chinese patent filed in China on August 3, 2020, bearing application number No. 202010769022.X, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the technical field of communications, and in particular to a beam training method, device, terminal device, and network device. [Background technology]

[0003] Future wireless communication systems may involve wireless communication networks assisted by intelligent surface devices. Terminal devices receive signals directly from network devices and signals forwarded by intelligent surface devices, and frequency-selective fading occurs due to the superposition of multipath signals received by the terminal devices. The beam scanning function defined in 5G New Radio (NR) can be applied to the beam scanning flow of intelligent surfaces. However, after the beam direction is determined, due to the influence of the multipath environment, the terminal still experiences frequency-selective fading caused by multipath during actual data transmission. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application aim to provide a beam training method, device, terminal equipment, and network equipment that can solve the problem that a terminal is affected by frequency selective fading due to multipath during actual data transmission due to the influence of a multipath environment. [Means for solving the problem]

[0005] In order to solve the above technical problems, the present application is realized as follows.

[0006] In a first aspect, a beam training method applied to a terminal device, a step of measuring at least two reference signals for beam training transmitted by an auxiliary device in at least two transmission modes and obtaining measurement information, the measurement information being for indicating an optimal transmission mode of the auxiliary device, and the transmission mode of the auxiliary device being determined by the beam direction and beam phase of the transmission signal of the auxiliary device; and reporting the measurement information to the network equipment.

[0007] In a second aspect, there is provided a beam training method applied to a network device, comprising: transmitting at least two beam training reference signals; A step of acquiring measurement information to be reported from a terminal device, the measurement information being obtained after the terminal device measures the at least two reference signals for beam training that are transmitted by an auxiliary device in at least two transmission modes, and the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device; determining an optimal transmission mode for the auxiliary device according to the measurement information.

[0008] In a third aspect, a beam training device applied to a terminal device, a first acquisition module used to measure at least two reference signals for beam training transmitted by an auxiliary device in at least two transmission modes and obtain measurement information, the measurement information being for indicating an optimal transmission mode of the auxiliary device, and the transmission mode of the auxiliary device being determined by a beam direction and a beam phase of the transmission signal of the auxiliary device; a first reporting module used to report the measurement information to the network equipment.

[0009] In a fourth aspect, there is provided a beam training apparatus applied to a network device, a first transmitting module used to transmit at least two reference signals for beam training; A second acquisition module used to acquire measurement information reported from a terminal device, the measurement information being obtained after the terminal device measures the at least two reference signals for beam training that are transmitted by an auxiliary device in at least two transmission modes, and the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device; a first determination module used to determine an optimal transmission mode for the auxiliary device according to the measurement information.

[0010] In a fifth aspect, there is provided a terminal device comprising a processor, a memory, and a program or command stored in the memory and executable by the processor, wherein when the program or command is executed by the processor, the steps of the method according to the first aspect are realized.

[0011] In a sixth aspect, there is provided a network device comprising a processor, a memory, and a program or command stored in the memory and executable by the processor, wherein when the program or command is executed by the processor, the steps of the method according to the second aspect are realized.

[0012] In a seventh aspect, there is provided a readable storage medium storing a program or command, the program or command causing the steps of the method according to the first aspect to be realized when executed by a processor, or causing the steps of the method according to the second aspect to be realized.

[0013] In an eighth aspect, there is provided a chip comprising a processor and a communication interface, wherein the communication interface and the processor are coupled together, and the processor is configured to execute a program or command of a network device to implement the method described in the first aspect or to implement the method described in the second aspect. [Effects of the Invention]

[0014] In an embodiment of the present application, an auxiliary device measures at least two reference signals for beam training transmitted in at least two transmission modes to obtain measurement information, and reports the measurement information to the network device, so that the network device can determine an optimal beam direction and an optimal beam phase of the transmission signal of the auxiliary device, and further, can reduce the influence of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a configuration diagram of a network system to which an embodiment of the present application can be applied. [Figure 2] 1 shows a schematic flowchart (part 1) of a beam training method according to an embodiment of the present application. [Figure 3] 1 shows a schematic flowchart (part 2) of a beam training method according to an embodiment of the present application. [Figure 4] 1 shows a schematic diagram (part 1) of a module of a beam training device according to an embodiment of the present application. [Figure 5] 1 shows a block diagram of a configuration of a communication device according to an embodiment of the present application. [Figure 6] 1 shows a block diagram of the configuration of a terminal device according to an embodiment of the present application. [Figure 7] FIG. 2 shows a schematic diagram (part 2) of a module of a beam training device according to an embodiment of the present application. [Figure 8] 1 shows a block diagram of a configuration of a network device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Of course, the described embodiments are only a part of the embodiments of the present application, and are not all of the embodiments. Based on the embodiments of the present application, all other embodiments that can be obtained by those skilled in the art without any creative efforts shall fall within the protection scope of the present application.

[0017] The terms "first" and "second" used in the specification and claims of this application are not intended to describe a particular order or chronological order, but rather to distinguish between similar objects. It should be understood that the data used in this manner may be interchanged where appropriate so that the embodiments of this application can be implemented in an order other than that illustrated or described herein. Furthermore, the objects distinguished by "first" and "second" generally refer to one type and do not limit the number of objects; for example, the first object may be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the " / " symbol generally indicates that the related objects before and after are in an "or" relationship.

[0018] In future communication scenarios, the coverage of hotspot services such as VR, AR, and video services may be expanded. In such service scenarios, the beamforming technology of base stations alone cannot provide sufficient communication rates to terminals. Therefore, it will be necessary to introduce new auxiliary nodes into the network to increase the strength of the received signal at terminals.

[0019] Large Intelligent Surfaces (LIS) are novel artificial material devices that can dynamically or quasi-statically adjust their electromagnetic properties to affect the reflection or refraction behavior of electromagnetic waves incident on the LIS. As shown in Figure 1, LIS can control the reflected / refracted electromagnetic signals to realize functions such as beam scanning or beamforming.

[0020] The beam control principle based on the intelligent surface 13 is as follows. Taking the phase-controlled intelligent surface as an example, the desired control phase of the element unit (m, n) is: JPEG0007796106000001.jpg1461, where: JPEG0007796106000002.jpg1031 are the coordinate vectors of the base station 11, the terminal 12, and the element unit (m, n), respectively. If the relative positions of the terminal and the intelligent surface satisfy the far-field radiation condition, the signal from the intelligent surface to the terminal will be an approximately parallel signal. JPEG0007796106000003.jpg938. When the far-field radiation condition is met, a corresponding approximate operation can be performed between the base station 11 and the intelligent surface 13 .

[0021] For 1-bit discrete phase control intelligent surfaces, the desired compensation phase is mapped to a discrete phase by discretization processing, e.g., Make it something like JPEG0007796106000004.jpg1368.

[0022] The 5G NR protocol provides an analog beam scanning function, the basic process of which is that the base station transmits signals in different directions at different times, and the terminal receives the signals using a fixed receiving beam, selects the most appropriate transmitting beam, and reports it to the base station.

[0023] The beam scanning function defined in 5G NR can be applied to the beam scanning flow of intelligent surfaces, but after the beam direction is determined, due to the influence of the multipath environment, the terminal will still be affected by frequency selective fading caused by multipath during actual data transmission.

[0024] When the signal phase of the base station changes, it affects the phase changes of all multipaths in the multipath environment, so the purpose of controlling some multipaths independently cannot be achieved.

[0025] The intelligent surface device can provide a portion of the multipath signal to the terminal and control the phase of the multipath channel, so that the terminal can reduce the effect of frequency selective fading by changing the phase of the portion of the multipath channel.

[0026] The fluctuations in multipath phase and amplitude in a wireless channel are random and slow, and are affected by the movement / changing speed of the terminal and environmental objects (usually represented by the channel coherence time). That is, if a certain RB resource falls into frequency-selective fading in the frequency domain, that RB will continue to experience frequency-selective fading for a certain period of time until the multipath channel changes to another state, resulting in poor communication quality. In traditional communication systems, frequency-selective fading is avoided through frequency scheduling. After introducing an intelligent surface, the frequency-selective fading of the target RB is changed by controlling the phase of some multipaths in the multipath channel. Because the multipath phase control of the intelligent surface is discrete, for example, 1-bit controlled 0 or π phase control, in a multipath channel with slowly varying phase, the optimal intelligent surface multipath phase is determined once and becomes effective within a certain period of time thereafter (preventing the target RB from experiencing frequency-selective fading). That is, the optimal intelligent surface multipath phase does not need to be adjusted frequently.

[0027] Based on the above description, an embodiment of the present application provides a beam training method applied to a terminal device, and as shown in FIG. 2, the method includes the following steps 201 and 202:

[0028] In step 201, the auxiliary device measures at least two beam training reference signals transmitted in at least two transmission modes to obtain measurement information, and the measurement information is used to indicate the optimal transmission mode of the auxiliary device, where the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device. The beam direction of the auxiliary device represents the spatial energy distribution characteristics of the transmission signal, and the beam phase of the auxiliary device represents the relative phase of the transmission signal in the target direction or the direction in which the energy is strongest. That is, it is the difference between the signal phase of the same observation point in the target direction and the phase of the signal transmitted by the network device, and it can be understood that the difference between the different beam phases satisfies an integer multiple of 2π / M, where M is the number of beam phases.

[0029] The reference signal is transmitted from the network device, forwarded through the auxiliary device, and received by the terminal device. In the embodiments of the present application, the auxiliary device may specifically be an intelligent surface or other device capable of realizing frequency channel coherence forwarding.

[0030] In this step, the reference signal is a signal for performing beam training, specifically, the reference signal is a signal for determining the beam direction and beam phase of the auxiliary device, or the reference signal includes a first reference signal for determining the beam direction of the auxiliary device and a second reference signal for determining the beam phase of the auxiliary device.

[0031] The above measurement information is the signal strength of the reference signal; The number of the optimal beam direction or the slot number of the corresponding reference signal or other information that can uniquely determine the beam direction, and It may also include at least one item of the number of the optimum beam phase, the slot number of the corresponding reference signal, or other information that can uniquely determine the beam phase.

[0032] In step 202, the measurement information is reported to the network device.

[0033] Here, by reporting the above measurement information to a network device, for example, a base station, the network device can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission beam, and further reduce the effects of frequency selective fading due to a multipath environment based on the optimal beam direction and optimal beam phase.

[0034] According to the beam training method of an embodiment of the present application, an auxiliary device measures at least two reference signals for beam training transmitted in at least two transmission modes to obtain measurement information, and reports the measurement information to the network equipment, so that the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission signal, and further reduce the effect of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase.

[0035] In a first alternative implementation, the reference signal is a first reference signal transmitted from the network device for determining the beam direction of the auxiliary device; and a second reference signal transmitted from the network equipment for determining the beam phase of the auxiliary device.

[0036] Based on this, before the step of measuring at least two reference signals for beam training transmitted by the auxiliary device in at least two transmission modes, further comprising receiving first instruction information and second instruction information transmitted from the network device; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is less than or equal to the number of beam phases of the adjunction-transmitted signal, where N and M are positive integers. It can be understood that the beam directions of the adjunction-transmitted signal corresponding to the N transmission timings of the first reference signal are a subset of the actual maximum number of beam directions of the adjunction-transmitted signal, and the beam phases of the adjunction-transmitted signal corresponding to the M transmission timings of the second reference signal are a subset of the actual maximum number of beam phases of the adjunction-transmitted signal.

[0037] Optionally, the bandwidth of the first reference signal is greater than or equal to a preset bandwidth threshold.

[0038] In an embodiment of the present application, the first reference signal is a wideband signal, for example, the bandwidth of the first reference signal may be the full bandwidth or larger than a preset bandwidth threshold, so as to ensure that the multipath resolution is sufficiently large and the accuracy of beam training is as unaffected as possible by frequency selective fading and beam phase caused by multipath.

[0039] Optionally, the first frequency range corresponding to the second reference signal is equal to or greater than a second frequency range, and the second frequency range is a frequency range corresponding to data transmission between a terminal device and a network device.

[0040] In an embodiment of the present application, the second reference signal may be a narrowband signal, and the frequency resource range of the second reference signal is the same as or includes the frequency resource range for data transmission (e.g., the frequency resource configured for transmission semi-persistent scheduling).

[0041] In the first alternative implementation form, the step of measuring at least two reference signals for beam training transmitted by the auxiliary device in at least two transmission modes and obtaining measurement information includes: measuring the first reference signal to obtain first measurement information for indicating an optimal beam direction of the auxiliary device transmitted signal within a bandwidth of the first reference signal; and measuring the second reference signal to obtain second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device transmitted signal within a bandwidth of the second reference signal.

[0042] In this first alternative implementation, the optimal beam direction and optimal beam phase of the assisting device are determined by two-stage beam training. In the first stage, the network equipment transmits a signal (preferably a wideband signal) multiple times, the assisting device transmits to the terminal device using different transmission beams (i.e., different beam directions are required, but the beam phases are not limited), and the terminal device performs measurements, thereby allowing the network equipment to determine the optimal beam direction. In the second stage, the network equipment transmits a signal (preferably a narrowband signal, corresponding to or including a frequency resource for data transmission) multiple times, and the assisting device uses the optimal beam direction of the first stage and different transmission beam phases to transmit to the terminal device, and the terminal device performs measurements. In this way, the network equipment determines the optimal beam phase corresponding to the optimal beam direction.

[0043] Optionally, the two-stage beam training may be performed periodically or may be dynamically triggered rather than periodically.

[0044] Optionally, the beam phase training period and the beam direction training period may be different, with the beam phase training period being less than or equal to the beam direction training period.

[0045] Optionally, when the strength of the received second reference signal is less than a first strength threshold, first request information is reported, which is information for requesting to terminate beam phase training or information for requesting beam direction training.

[0046] Optionally, when the strength of each of the second reference signals is less than a second strength threshold, or when the strength of the signal transmitting data between the terminal equipment and the network equipment is less than a second strength threshold, second request information for requesting beam direction training is reported.

[0047] In this implementation, the network device transmits a first reference signal multiple times using the same transmission beam, and the intelligent surface transmits the first reference signal to the terminal device using different transmission modes. The terminal device receives the first reference signal transmitted multiple times by the intelligent surface using the same beam, measures the first reference signal, obtains the strength of each first reference signal, and reports the strength and / or the number of the optimal beam direction of each first reference signal to the network device as the first measurement information. Here, the optimal beam direction is the beam direction corresponding to the first reference signal with the strongest signal strength. The network device then configures the optimal beam direction on the intelligent surface, and the intelligent surface uses the optimal beam direction to transmit the second reference signal transmitted multiple times by the network device, measures the second reference signal, obtains the strength of each second reference signal, and reports the strength and / or the number of the optimal transmission phase of each second reference signal to the network device as the second measurement information. Here, the optimal transmission phase is the transmission phase corresponding to the second reference signal with the strongest signal strength.

[0048] As a second alternative implementation, the reference signal for beam training is a third reference signal; The third reference signal is a reference signal transmitted from a network device for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

[0049] Based on this, before the step of measuring at least two reference signals for beam training transmitted by the auxiliary device in at least two transmission modes, further comprising receiving third instruction information transmitted from the network device; The third instruction information is time-frequency resource allocation information of the third reference signal, and the third instruction information corresponds to at least M*N transmission timings, where N is less than or equal to the number of beam directions of the auxiliary device transmission signal, and M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

[0050] Optionally, the step of measuring reference signals for at least two beam training signals transmitted by the auxiliary device in at least two transmission modes includes: measuring the third reference signal and obtaining third measurement information for indicating an optimal combination of beam direction, beam phase, and subband of the auxiliary device transmission signal within a bandwidth of the third reference signal; And / or, the method includes a step of measuring the third reference signal and obtaining fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to the optimal beam direction of the auxiliary device transmission signal within the bandwidth of the third reference signal.

[0051] In this implementation, the network equipment can arrange M*N third reference signals to correspond to M*N transmission modes of the auxiliary device (including beam direction and beam phase for each transmission mode), and notify the terminal equipment of the arrangement information of the M*N third reference signals.

[0052] Assuming that the third reference signal includes K subbands, M*N*K subbands included in the third reference signal are measured, and each measurement result corresponds to one combination of beam direction, beam phase, and subband. In this way, the beam direction, beam phase, and subband corresponding to the measurement result with the strongest signal strength are selected as the above-mentioned optimal combination.

[0053] In the second alternative implementation form, one stage of beam training is used to obtain information on the optimal combination of beam direction, beam phase and subband of the auxiliary device transmission signal, as well as information on the optimal subbands corresponding to M beam phases corresponding to the optimal beam direction of the auxiliary device transmission signal within the bandwidth of the third reference signal.

[0054] Optionally, the step of measuring reference signals for at least two beam training signals transmitted by the auxiliary device in at least two transmission modes includes: For a semi-persistent scheduling service, measuring the reference signal according to a beam training period or after receiving a beam training instruction to obtain measurement information; the reference signal includes the first reference signal and the second reference signal, or the reference signal includes the second reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes the first measurement information and the second measurement information; When the reference signal includes the second reference signal, the measurement information includes the second measurement information.

[0055] Optionally, before the semi-persistent scheduling service is activated or when the semi-persistent scheduling service is activated, the first reference signal and / or the second reference signal transmitted by the auxiliary device in at least two transmission modes is measured.

[0056] Optionally, according to the beam training method of the embodiment of the present application, the step of measuring at least two beam training reference signals transmitted by the auxiliary device in at least two transmission modes includes: For a dynamic scheduling service, measuring the reference signal according to a beam training period or after receiving a beam training instruction to obtain measurement information; the reference signal includes the first reference signal and the second reference signal, or the reference signal includes the third reference signal; When the reference signal includes the first reference signal and the second reference signal, the measurement information includes the first measurement information and the second measurement information; When the reference signal is the third reference signal, the measurement information includes the third measurement information and / or the fourth measurement information.

[0057] Optionally, according to the beam training method of the embodiment of the present application, measuring channel state information (CSI) of each subband at different transmission timings of the second reference signal or the third reference signal; reporting, to a network device, the CSI of the subband at different transmission timings of the second reference signal or the third reference signal; Different transmission timings of the second reference signal or the third reference signal correspond to different transmission modes of the auxiliary device.

[0058] Optionally, the step of reporting the CSI of the subband at different transmission timings of the second reference signal or the third reference signal to the network device further comprises: reporting CSI of an optimal subband at a transmission timing of each of the second reference signals; Alternatively, the method may include reporting CSI of the optimal subband at the transmission timing of each of the third reference signals.

[0059] Optionally, the step of reporting the CSI of the subband at different transmission timings of the second reference signal or the third reference signal to the network device further comprises: determining CSI of an optimal subband combination based on the subband CSI of the M transmission timings and reporting the CSI to a network device; The subband combination includes M frequency hopping subbands paired according to a frequency hopping rule, and the M frequency hopping subbands correspond to M transmission timings of the second reference signal or M transmission timings of the third reference signal.

[0060] Optionally, the CSI includes a target indication message for indicating a beam phase corresponding to the CSI.

[0061] For example, a reference signal, a slot number, or other information for indicating the beam phase corresponding to the CSI is added to the CSI.

[0062] In the embodiment of the present application, the CSI of the subbands is measured to ensure that the optimal communication method is adopted for the dynamic scheduling service.

[0063] The beam training method of the present application will be described below with specific examples.

[0064] Example 1 For semi-persistent scheduling (SPS), a base station periodically allocates valid time-frequency resources to a terminal, and the terminal transmits a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH) on a fixed time-frequency resource in a fixed slot. For infrequent terminal services where such time-frequency resources are relatively fixed or scheduling is relatively inflexible, the following beam training flow is used.

[0065] 1. The base station sends a message to the terminal to notify the terminal of the beam direction training period of the intelligent surface or to trigger a non-periodic beam direction training flow. The base station determines the number of candidate beams for the intelligent surface, optionally using the number of supportable beams reported by the intelligent surface, optionally selecting multiple beams from the deployable beams of the intelligent surface according to the actual communication situation, and notifying the intelligent surface. The base station configures parameters (e.g., time-frequency resources, reference signal sequence generation parameters, ports, etc.) of the corresponding reference signal (first reference signal) according to the number of candidate beams of the intelligent surface, and the reference signal should be time-division multiplexed. Optionally, the base station notifies the terminal of the number of candidate beams of the intelligent surface and / or the corresponding reference signal configuration parameters. Optionally, the bandwidth of the reference signal may be the full bandwidth or larger than a certain bandwidth threshold, so that the multipath resolution is sufficiently large and the accuracy of beam training is as unaffected as possible by frequency-selective fading and beam phase due to multipath.

[0066] 2. The terminal receives the reference signal according to the configuration information of the base station, measures the signal strength, and feeds back the measurement result or the number of the optimal beam direction. The base station determines the optimal beam direction of the intelligent surface according to the terminal's report message and places it on the intelligent surface.

[0067] 3. The base station configures the terminal and the intelligent surface to perform beam phase training, which may be a periodic beam phase training flow or a non-periodic beam phase training flow triggered by a message. The number of candidate beam phases of the intelligent surface is notified, or the number of beam phases is determined according to the capabilities of the intelligent surface (for example, the intelligent surface intelligently supports 1-bit controlled 0 or π phase adjustment, and there are two phase states), and the configuration parameters of the corresponding reference signal are the same as above. The reference signal for beam phase training (second reference signal) is the same as or includes the range of frequency resources for data transmission (eg, frequency resources allocated for SPS transmission). The base station transmits the reference signals in the same transmission beam, and the intelligent surface transmits the reference signals at different times and with different phases in the beam direction specified by the base station.

[0068] 4. The terminal receives the reference signal according to the information of the base station, measures the strength of each signal, and feeds back the measurement result or feeds back the beam number corresponding to the optimal beam phase.

[0069] 5. The base station notifies the intelligent surface to adjust the beam phase based on the measurement results reported by the terminal.

[0070] Example 2 For dynamic scheduling terminal services, the terminal needs to measure subband CSI of different phases of the same intelligent surface beam to determine the optimal communication method. The beam training flow of the intelligent surface is specifically as follows:

[0071] 1. The base station performs beam direction training for the intelligent surface. The terminal selects the optimal beam direction according to the reference signal strength RSRP and reports it to the base station, the specific process of which is the same as in the first embodiment.

[0072] 2. The base station performs intelligent surface beam phase training. The base station transmits reference signals in the entire bandwidth (either in one transmission or in time division transmission by sub-bands), and the number of reference signals is configured correspondingly according to the number of intelligent surface beam phases to be measured. The configuration and implementation are the same as those in the first embodiment.

[0073] 3. The terminal receives the reference signal and measures and reports the subband CSI. Optionally, the terminal reports the optimal subband CSI according to the number of beam phases of the intelligent surface, i.e., for each beam phase, reports the optimal subband CSI for that beam phase. Optionally, the terminal measures the CSI of subband 1 of beam phase 1 of the intelligent surface and subband 2 of beam phase 2 of the intelligent surface according to the frequency hopping rule (a frequency hopping subband pairing method, i.e., frequency hopping between subband 1 and subband 2), and reports the optimal frequency hopping subband. Optionally, the CSI of subband 1 and the CSI of subband 2 may be weighted to obtain and report one subband CSI.

[0074] 4. The base station schedules the PDSCH according to the terminal's report result. The base station optionally selects an optimal beam phase according to the reported results of multiple beam phases and configures it on the intelligent surface, and the base station transmits a PDSCH in the corresponding optimal subband. Optionally, the base station configures the switching time and switching sequence of the beam phase of the intelligent surface, and schedules the frequency-hopping PDSCH for the terminal according to the switching time and switching sequence, where the frequency-hopping subband is determined according to the reporting information of the terminal. For example, the beam phase of the intelligent surface is switched from phase 1 to phase 2 at a first time, and the optimal subband is the first subband at phase 1, and the optimal subband is the second subband at phase 2. In this way, the PDSCH is transmitted on the first subband before the first time, and on the second subband after the first time.

[0075] Example 3 For dynamic scheduling communication services, measurement scheduling is completed in one step.

[0076] Assume that the number of beam directions of the intelligent surface is N, and the number of phases of each beam direction is M.

[0077] 1. The base station determines the beam direction and number of beams of the intelligent surface.

[0078] 2. The base station is positioned relative to the beam direction and beam phase of all intelligent surfaces. Specifically, the base station configures M*N reference signals to correspond to the M*N transmission modes of the intelligent surface, respectively, and notifies the terminal of the configuration parameters of the reference signals and indicates which intelligent surface beam each reference signal corresponds to.

[0079] 3. The terminal receives the reference signal and measures and reports the sub-band CSI. The measurement and reporting method is the same as in the second embodiment. Here, the optimal subband and the corresponding optimal beam direction and beam phase are selected using M*N reference signals, or multiple optimal subbands and corresponding optimal beam directions and optimal beam phases for frequency hopping are selected using M*N reference signals, or multiple optimal subbands and corresponding beam phases for frequency hopping are selected among M beam phases in one beam direction.

[0080] 4. The base station configures an intelligent surface according to the terminal's report result and schedules the terminal's PDSCH.

[0081] According to the beam training method of an embodiment of the present application, an auxiliary device measures at least two reference signals for beam training transmitted in at least two transmission modes to obtain measurement information, and reports the measurement information to the network equipment, so that the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission signal, and further reduce the effect of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase.

[0082] As shown in FIG. 3, an embodiment of the present application further provides a beam training method applied to a network side device, which includes the following steps 301, 302 and 303.

[0083] In step 301, at least two reference signals for beam training are transmitted.

[0084] In this step, the reference signal is a signal for beam training, specifically, the reference signal is a signal for determining the beam direction and beam phase of the auxiliary device, or the reference signal includes a first reference signal for determining the beam direction of the auxiliary device and a second reference signal for determining the beam phase of the auxiliary device.

[0085] In step 302, measurement information reported from the terminal equipment is obtained, and the measurement information is obtained after the terminal equipment measures the at least two beam training reference signals transmitted by the auxiliary device in at least two transmission modes, and the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device.

[0086] The above measurement information is the signal strength of the reference signal; The number of the optimal beam direction, and It may also include at least one term of the number of the optimum beam phase.

[0087] In step 303, the optimal transmission mode of the auxiliary device is determined according to the measurement information.

[0088] Here, the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission beam according to the measurement information, that is, obtain the optimal transmission mode of the auxiliary device, thereby controlling the multipath phase to improve the effect of frequency selective fading.

[0089] According to the beam training method of the embodiment of the present application, at least two reference signals for beam training are transmitted, measurement information reported from the terminal equipment is obtained, and the optimal transmission mode of the auxiliary device is determined based on the measurement information, that is, the optimal beam direction and optimal beam phase of the auxiliary device are determined, thereby controlling the multipath phase to improve the effect of frequency selective fading.

[0090] In a first alternative implementation, the reference signal is a first reference signal for determining the beam direction of the auxiliary device; and a second reference signal for determining the beam phase of the auxiliary device.

[0091] Based on this, before the step of obtaining measurement information to be reported from the terminal device, further comprising the step of transmitting first instruction information and second instruction information to the terminal device; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is equal to or less than the number of beam phases of the auxiliary device transmission signal.

[0092] Optionally, before the step of obtaining measurement information to be reported from the terminal device, further comprising transmitting the first configuration information and the second configuration information to the auxiliary device; the first arrangement information is time domain arrangement information of beam directions of the N transmission signals of the auxiliary device, and the time domain arrangement information corresponds one-to-one to the N transmission timings of the first reference signals; The second configuration information is time-domain configuration information of M beam phases corresponding to the optimal beam direction of the auxiliary device, and the time-domain configuration information corresponds one-to-one to the M transmission timings of the second reference signal, and the optimal beam direction is determined by the first reference signal.

[0093] Optionally, the measurement information comprises: First measurement information for indicating an optimal beam direction of the auxiliary device transmission signal within a bandwidth of the first reference signal; and second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device transmitted signal within a bandwidth of the second reference signal.

[0094] As a second alternative implementation, the reference signal for beam training is a third reference signal; The third reference signal is a reference signal for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

[0095] Optionally, before the step of obtaining measurement information to be reported from the terminal device, further comprising the step of transmitting third instruction information to the terminal device; The third instruction information is time-frequency resource allocation information of the third reference signal, and the third instruction information corresponds to at least M*N transmission timings, where N is less than or equal to the number of beam directions of the auxiliary device transmission signal, and M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

[0096] Optionally, the beam training method of the present application includes: further comprising transmitting third configuration information to the auxiliary device; The third configuration information is time domain configuration information of beam directions and beam phases of the M*N transmission signals of the auxiliary device, and the time domain configuration information corresponds one-to-one to the M*N transmission timings of the third reference signals.

[0097] Optionally, the measurement information comprises: Third measurement information for indicating an optimal combination of beam direction, beam phase and subband of the auxiliary device transmission signal within the bandwidth of the third reference signal; and / or The fourth measurement information includes fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to optimal beam directions of the auxiliary device transmission signal within a bandwidth of the third reference signal.

[0098] Optionally, in an embodiment of the present application, for a semi-persistent scheduling service, the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a second reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal includes the second reference signal, the measurement information includes second measurement information.

[0099] Optionally, in an embodiment of the present application, for a dynamic scheduling service, the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a third reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal is a third reference signal, the measurement information is Third measurement information for indicating an optimal combination of beam direction, beam phase and subband of the auxiliary device transmission signal within the bandwidth of the third reference signal; and / or The fourth measurement information includes fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to optimal beam directions of the auxiliary device transmission signal within a bandwidth of the third reference signal.

[0100] Further optionally, the beam training method of the present application includes: The method further includes receiving subband CSI information corresponding to measurement information of subband CSI at different transmission timings of the second reference signal or the third reference signal, reported from a terminal device.

[0101] Optionally, the subband CSI information includes CSI of an optimal subband at a transmission timing of each of the second reference signals; Alternatively, the subband CSI information includes CSI of an optimal subband at the transmission timing of each of the third reference signals, Alternatively, the subband CSI information includes CSI of an optimal subband combination, The subband combination includes M frequency hopping subbands paired according to a frequency hopping rule, and the M frequency hopping subbands correspond to M transmission timings of the second reference signal or M transmission timings of the third reference signal.

[0102] Optionally, after the step of determining an optimum transfer mode for the auxiliary device according to the measurement information, The method further includes scheduling data transmission using an optimal combination of subbands and the optimal transmission mode.

[0103] Optionally, the step of scheduling data transmission using an optimal combination of subbands and the optimal transmission mode comprises: transmitting data on an optimal subband, which is a subband in the optimal combination; Alternatively, the method may include transmitting data in the M frequency hopping subbands of the subband combination in a frequency hopping manner.

[0104] Optionally, prior to the step of scheduling data transmission using an optimal combination of subbands and the optimal transmission mode, sending, to the auxiliary device, fourth configuration information indicating an optimal transmission mode of the auxiliary device corresponding to an optimal subband for data transmission; Alternatively, the method may further include transmitting, to the auxiliary device, fifth configuration information indicating transmission modes of the M auxiliary devices corresponding to the M subbands for data transmission.

[0105] Optionally, the beam training method of the present application includes: performing an offset process on the array information of the auxiliary device transfer beam; The method further includes controlling the beam phase of the auxiliary device in at least one manner by calculating array information of the auxiliary device transfer beam with different discretization indices.

[0106] In the embodiment of the present application, the beam generation principle of the intelligent surface is realized by the phase difference of the transmission signal of each intelligent surface element, and the beam phase control can be realized by changing the state of the entire array without changing the phase difference between elements.

[0107] For example, as shown in Figure 1, the intelligent surface is a 1-bit controlled device that can achieve a phase inversion of 0 or π. The current beam array information is A=(1000, 0100, 0001, 1010). Adding an offset of 1 to the entire array information allows JPEG0007796106000005.jpg1067. At this time, the transmitted beam direction does not change, but the beam phase is inverted by π.

[0108] The beam phase can be further controlled by element transmit signal phase discretization index.

[0109] For example, in the following formula: The range of JPEG0007796106000006.jpg911 is (0,π) and (π,2π), and thus the beam phase of the assumed transmitted signal is It should be convolved with JPEG0007796106000007.jpg1516, i.e., take the median values ​​of (0,π) and (π,2π), respectively. JPEG0007796106000008.jpg1571Furthermore, for example, in the formula: The range of JPEG0007796106000009.jpg911 is JPEG0007796106000010.jpg1437, and thus the beam phase of the assumed transmitted signal should overlap with 0 and π. JPEG0007796106000011.jpg1580

[0110] The intelligent device realizes different beam phases through different discretization indices. By combining the above two discretization indices, the number of transmit beam phases of the intelligent surface can be made greater than the number of element states of the intelligent device.

[0111] According to the beam training method of the embodiment of the present application, at least two reference signals for beam training are transmitted, measurement information reported from the terminal equipment is obtained, and the optimal transmission mode of the auxiliary device is determined based on the measurement information, that is, the optimal beam direction and optimal beam phase of the auxiliary device are determined, thereby controlling the multipath phase to improve the effect of frequency selective fading.

[0112] Although the above beam training method describes a downlink-related flow, it should be noted that the embodiment of the present application can also be realized by an uplink beam training flow, that is, a terminal device transmits at least two reference signals for beam training, or a part of the reference signals is transmitted by a network device and the other part is transmitted by the terminal device, the network device measures at least two reference signals for beam training that an auxiliary device transmits in at least two transmission modes, obtains measurement information and transmits it to the terminal device, and the terminal device determines the optimal transmission mode of the auxiliary device according to the measurement information.

[0113] It should be noted that in the beam training method provided in the embodiments of the present application, the execution entity may be a beam training device or a control module for executing the beam training method in the beam training device. In the embodiments of the present application, the beam training device provided in the embodiments of the present application will be described by taking the execution of the beam training method by the beam training device as an example.

[0114] As shown in FIG. 4, an embodiment of the present application is a beam training apparatus 400 applied to a terminal device, a first acquisition module 401 used to measure at least two reference signals for beam training transmitted by an auxiliary device in at least two transmission modes, and to obtain measurement information, wherein the measurement information is for indicating an optimal transmission mode of the auxiliary device, and the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device; A beam training apparatus 400 is provided, comprising: a first reporting module 402 used for reporting the measurement information to the network equipment.

[0115] According to the beam training device of an embodiment of the present application, the auxiliary device measures at least two reference signals for beam training transmitted in at least two transmission modes to obtain measurement information, and reports the measurement information to the network equipment, so that the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission signal, and further reduce the effects of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase.

[0116] According to the beam training apparatus of the embodiment of the present application, the reference signal is a first reference signal transmitted from the network device for determining the beam direction of the auxiliary device; and a second reference signal transmitted from the network equipment for determining the beam phase of the auxiliary device.

[0117] According to the beam training device of the embodiment of the present application, The first acquisition module further includes a first receiving module used to receive first instruction information and second instruction information transmitted from the network device before measuring at least two reference signals for beam training transmitted by the auxiliary device in at least two transmission modes; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is equal to or less than the number of beam phases of the auxiliary device transmission signal.

[0118] According to the beam training apparatus of the embodiment of the present application, the bandwidth of the first reference signal is equal to or greater than a preset bandwidth threshold.

[0119] According to the beam training device of the embodiment of the present application, the first frequency range corresponding to the second reference signal is equal to or greater than the second frequency range, and the second frequency range is a frequency range corresponding to data transmission between a terminal device and a network device.

[0120] According to the beam training apparatus of the embodiment of the present application, the first acquisition module comprises: a first acquisition sub-module, which is used to measure the first reference signal and obtain first measurement information for indicating an optimal beam direction of the auxiliary device transmission signal within a bandwidth of the first reference signal; and a second acquisition sub-module used to measure the second reference signal and obtain second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device transmission signal within the bandwidth of the second reference signal.

[0121] According to the beam training device of the embodiment of the present application, the reference signal for beam training is a third reference signal, The third reference signal is a reference signal transmitted from a network device for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

[0122] According to the beam training device of the embodiment of the present application, The first acquisition module further includes a second receiving module, which is used to receive third instruction information transmitted from the network device before measuring the at least two reference signals for beam training transmitted by the auxiliary device in at least two transmission modes; The third instruction information is time-frequency resource allocation information of the third reference signal, and the third instruction information corresponds to at least M*N transmission timings, where N is less than or equal to the number of beam directions of the auxiliary device transmission signal, and M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

[0123] According to the beam training device of the embodiment of the present application, the first acquisition module measures the third reference signal and obtains third measurement information for indicating an optimal combination of beam direction, beam phase and sub-band of the auxiliary device transmission signal within the bandwidth of the third reference signal; And / or, it is used to perform a step of measuring the third reference signal and obtaining fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to the optimal beam direction of the auxiliary device transmission signal within the bandwidth of the third reference signal.

[0124] According to the beam training device of the embodiment of the present application, the first acquisition module is used for measuring the reference signal and obtaining measurement information according to a beam training period or after receiving a beam training instruction for a semi-persistent scheduling service; the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a second reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal includes the second reference signal, the measurement information includes second measurement information.

[0125] According to the beam training device of the embodiment of the present application, the first acquisition module is used for dynamic scheduling service, to measure the reference signal according to a beam training period or after receiving a beam training instruction, and to obtain measurement information; the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a third reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal is a third reference signal, the measurement information includes third measurement information and / or fourth measurement information.

[0126] According to the beam training device of the embodiment of the present application, a measurement module used to measure channel state information (CSI) of each subband at different transmission timings of the second reference signal or the third reference signal; a second reporting module used to report CSI of the subband at different transmission timings of a second reference signal or a third reference signal to a network device; Different transmission timings of the second reference signal or the third reference signal correspond to different transmission modes of the auxiliary device.

[0127] According to the beam training device of the embodiment of the present application, the second reporting module reports CSI of an optimal subband at a transmission timing of each of the second reference signals; Alternatively, it may be used to perform the step of reporting CSI of the optimal subband at the transmission timing of each of the third reference signals.

[0128] According to the beam training device of the embodiment of the present application, the second reporting module is used to determine CSI of an optimal subband combination according to the subband CSI of M transmission timings, and report the CSI to a network device; The subband combination includes M frequency hopping subbands paired according to a frequency hopping rule, and the M frequency hopping subbands correspond to M transmission timings of the second reference signal or M transmission timings of the third reference signal.

[0129] According to the beam training device of an embodiment of the present application, the auxiliary device measures at least two reference signals for beam training transmitted in at least two transmission modes to obtain measurement information, and reports the measurement information to the network equipment, so that the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission signal, and further reduce the effects of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase.

[0130] The beam training device in the embodiments of the present application may be a device, or may be an element, integrated circuit, or chip in a terminal. The device may be a portable terminal or a non-portable terminal. For example, the portable terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-portable terminal may be, for example, a server, a network-attached storage (NAS), a personal computer (PC), a television (TV), an automated teller machine (ATM), a kiosk, etc., and is not specifically limited in the embodiments of the present application.

[0131] The beam training device in the embodiment of the present application may be a device having an operating system, which may be an Android operating system, an iOS operating system, or any other possible operating system, and is not specifically limited in the embodiment of the present application.

[0132] The beam training device provided in the embodiment of the present application can implement each step implemented in the embodiment of the method of Figure 2 and achieve the same technical effect, and detailed description thereof will be omitted here to avoid repetition.

[0133] Optionally, as shown in Fig. 5, an embodiment of the present application further provides a communication device 500 including a processor 501, a memory 502, and a program or command stored in the memory 502 and executable by the processor 501. For example, when the communication device 500 is a terminal device, the program or command is executed by the processor 501 to realize each step of the embodiment of the beam training method applied to the terminal, and the same technical effect can be achieved. When the communication device 500 is a network device, the program or command is executed by the processor 501 to realize each step of the embodiment of the beam training method applied to the network device, and the same technical effect can be achieved. In order to avoid repetition, detailed description thereof will be omitted here.

[0134] FIG. 6 is a schematic diagram of the hardware configuration of a terminal device that realizes an embodiment of the present application.

[0135] The terminal device 600 includes elements such as, but not limited to, a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609 and a processor 610.

[0136] It will be understood by those skilled in the art that the terminal device 600 may further include a power source (e.g., a battery) for powering each element, and the power source may be logically connected to the processor 610 through a power management system, which may further realize functions such as charge / discharge management and power consumption management. The terminal configuration shown in Figure 6 is not intended to limit the terminal device, and the terminal device may include more or fewer elements than those shown in the drawing, or may combine some elements, or may have a different element arrangement, and detailed description thereof will be omitted here.

[0137] It should be understood that in an embodiment of the present application, the input unit 604 may include a graphics processing unit (GPU) 6041 for processing image data of static or video images captured by an image capture device (e.g., a camera) in a video capture mode or an image capture mode, and a microphone 6042. The display unit 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. The other input devices 6072 may include, but are not limited to, a physical keyboard, function buttons (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and a control lever, and detailed descriptions thereof will be omitted here.

[0138] In the embodiment of the present application, the high frequency unit 601 receives downlink data from the network side device, processes the data in the processor 610, and transmits uplink data to the network side device. Typically, the high frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a receiver / transmitter, a coupler, a low-noise amplifier, a duplexer, etc.

[0139] The memory 609 can be used to store software programs or commands and various data. The memory 609 may primarily include a program or command storage area and a data storage area, which can store an operating system, an application or command required for at least one function (e.g., audio playback function, image playback function, etc.). The memory 609 may also include high-speed random access memory or nonvolatile memory, which may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, the memory 609 may include at least one magnetic disk storage device, flash memory device, or other nonvolatile solid-state storage device.

[0140] The processor 610 may include one or more processing units, and may optionally integrate an application processor that mainly processes an operating system, a user interface, and applications or instructions, etc., and a modem processor, such as a baseband processor that mainly processes wireless communications, in the processor 610. It is understood that the modem processor may not be integrated into the processor 610.

[0141] The processor 610 is used to measure at least two beam training reference signals transmitted by the auxiliary device in at least two transmission modes and obtain measurement information, the measurement information being used to indicate the optimal transmission mode of the auxiliary device, the transmission mode of the auxiliary device being determined by the beam direction and beam phase of the transmission signal of the auxiliary device, and the radio frequency unit 601 reports the measurement information to the network equipment.

[0142] According to the terminal equipment of the embodiment of the present application, by measuring at least two beam training reference signals transmitted by an auxiliary device in at least two transmission modes to obtain measurement information, and reporting the measurement information to the network equipment, the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission signal, and further reduce the effect of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase.

[0143] Optionally, the reference signal is: a first reference signal transmitted from the network device for determining the beam direction of the auxiliary device; and a second reference signal transmitted from the network equipment for determining the beam phase of the auxiliary device.

[0144] Optionally, the processor 610 is further adapted to receive first indication information and second indication information transmitted from the network device by the radio frequency unit; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is equal to or less than the number of beam phases of the auxiliary device transmission signal.

[0145] Optionally, the bandwidth of the first reference signal is greater than or equal to a preset bandwidth threshold.

[0146] Optionally, the first frequency range corresponding to the second reference signal is equal to or greater than a second frequency range, and the second frequency range is a frequency range corresponding to data transmission between a terminal device and a network device.

[0147] Optionally, the processor 610 further measures the first reference signal to obtain first measurement information for indicating an optimal beam direction of the auxiliary device transmission signal within a bandwidth of the first reference signal; and measuring the second reference signal to obtain second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device transmission signal within the bandwidth of the second reference signal.

[0148] Optionally, the reference signal for beam training is a third reference signal; The third reference signal is a reference signal transmitted from a network device for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

[0149] Optionally, the processor 610 is further adapted to receive third indication information transmitted from the network device by the radio frequency unit; The third instruction information is time-frequency resource allocation information of the third reference signal, and the third instruction information corresponds to at least M*N transmission timings, where N is less than or equal to the number of beam directions of the auxiliary device transmission signal, and M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

[0150] Optionally, the processor 610 further measures the third reference signal and obtains third measurement information for indicating an optimal combination of beam direction, beam phase, and subband of the auxiliary device transmission signal within a bandwidth of the third reference signal; And / or, it is used to perform a step of measuring the third reference signal and obtaining fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to the optimal beam direction of the auxiliary device transmission signal within the bandwidth of the third reference signal.

[0151] Optionally, the processor 610 is further configured to measure the reference signal and obtain measurement information during a beam training period or after receiving a beam training instruction for a semi-persistent scheduling service; the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a second reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal includes the second reference signal, the measurement information includes second measurement information.

[0152] Optionally, the processor 610 is further configured to measure the reference signal and obtain measurement information during a beam training period or after receiving a beam training instruction for a dynamic scheduling service; the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a third reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal is a third reference signal, the measurement information includes third measurement information and / or fourth measurement information.

[0153] Optionally, the processor 610 is further configured to perform the steps of: measuring channel state information (CSI) of each subband at different transmission timings of the second reference signal or the third reference signal; and reporting the CSI of the subband at different transmission timings of the second reference signal or the third reference signal to a network device; Different transmission timings of the second reference signal or the third reference signal correspond to different transmission modes of the auxiliary device.

[0154] Optionally, the processor 610 further comprises the steps of: reporting CSI of the optimal subband at the transmission timing of each of the second reference signals; Alternatively, it may be used to perform the step of reporting CSI of the optimal subband at the transmission timing of each of the third reference signals.

[0155] Optionally, the processor 610 is further configured to determine an optimal subband combination CSI based on the subband CSI of the M transmission timings, and report the CSI to the network device; The subband combination includes M frequency hopping subbands paired according to a frequency hopping rule, and the M frequency hopping subbands correspond to M transmission timings of the second reference signal or M transmission timings of the third reference signal.

[0156] According to the terminal equipment of the embodiment of the present application, by measuring at least two beam training reference signals transmitted by an auxiliary device in at least two transmission modes to obtain measurement information, and reporting the measurement information to the network equipment, the network equipment can determine the optimal beam direction and optimal beam phase of the auxiliary device transmission signal, and further reduce the effect of frequency selective fading due to a multipath environment based on the optimal beam direction and beam phase.

[0157] As shown in FIG. 7, an embodiment of the present application is a beam training apparatus 700 applied to a network device, a first transmitting module 701 used for transmitting at least two reference signals for beam training; A second acquisition module 702 is used to acquire measurement information reported from a terminal device, and the measurement information is obtained after the terminal device measures the at least two reference signals for beam training that are transmitted by an auxiliary device in at least two transmission modes, and the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device; The beam training device 700 further includes a first determination module 703 used to determine an optimal transmission mode of the auxiliary device according to the measurement information.

[0158] According to the beam training device of the embodiment of the present application, at least two reference signals for beam training are transmitted, measurement information reported from the terminal equipment is obtained, and the optimal transmission mode of the auxiliary device is determined based on the measurement information, that is, the optimal beam direction and optimal beam phase of the auxiliary device are determined, thereby controlling the multipath phase to improve the influence of frequency selective fading.

[0159] According to the beam training apparatus of the embodiment of the present application, the reference signal is a first reference signal for determining the beam direction of the auxiliary device; and a second reference signal for determining the beam phase of the auxiliary device.

[0160] According to the beam training device of the embodiment of the present application, Further, a second transmitting module is used to transmit first indication information and second indication information to the terminal device before the second acquiring module acquires the measurement information reported from the terminal device; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is equal to or less than the number of beam phases of the auxiliary device transmission signal.

[0161] According to the beam training device of the embodiment of the present application, The method further includes a third transmitting module, which is used to transmit the first configuration information and the second configuration information to the auxiliary device before the second acquiring module acquires the measurement information reported from the terminal device; the first arrangement information is time domain arrangement information of beam directions of the N transmission signals of the auxiliary device, and the time domain arrangement information corresponds one-to-one to the N transmission timings of the first reference signals; The second configuration information is time-domain configuration information of M beam phases corresponding to the optimal beam direction of the auxiliary device, and the time-domain configuration information corresponds one-to-one to the M transmission timings of the second reference signal, and the optimal beam direction is determined by the first reference signal.

[0162] According to the beam training apparatus of the embodiment of the present application, the measurement information is First measurement information for indicating an optimal beam direction of the auxiliary device transmission signal within a bandwidth of the first reference signal; and second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device forwarded signal within a bandwidth of the second reference signal.

[0163] According to the beam training apparatus of the embodiment of the present application, the reference signal is a third reference signal; The third reference signal is a reference signal for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

[0164] According to the beam training device of the embodiment of the present application, a fourth sending module used to send third instruction information to the terminal device before the second acquiring module acquires the measurement information reported from the terminal device; The third instruction information is time-frequency resource allocation information of the third reference signal, and the third instruction information corresponds to at least M*N transmission timings, where N is less than or equal to the number of beam directions of the auxiliary device transmission signal, and M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

[0165] According to the beam training device of the embodiment of the present application, a fifth sending module used to send third configuration information to the auxiliary device; The third configuration information is time domain configuration information of beam directions and beam phases of the M*N transmission signals of the auxiliary device, and the time domain configuration information corresponds one-to-one to the M*N transmission timings of the third reference signals.

[0166] According to the beam training apparatus of the embodiment of the present application, the measurement information is Third measurement information for indicating an optimal combination of beam direction, beam phase and subband of the auxiliary device transmission signal within the bandwidth of the third reference signal; and / or and fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to optimal beam directions of the auxiliary device transmission signal within a bandwidth of the third reference signal.

[0167] According to the beam training device of the embodiment of the present application, for a semi-persistent scheduling service, the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a second reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal includes the second reference signal, the measurement information includes second measurement information.

[0168] According to the beam training device of the embodiment of the present application, for dynamic scheduling service, the reference signal includes a first reference signal and a second reference signal, or the reference signal includes a third reference signal; When the reference signal includes a first reference signal and a second reference signal, the measurement information includes first measurement information and second measurement information; When the reference signal is a third reference signal, the measurement information is Third measurement information for indicating an optimal combination of beam direction, beam phase and subband of the auxiliary device transmission signal within the bandwidth of the third reference signal; and / or The fourth measurement information includes fourth measurement information for indicating optimal subbands corresponding to M beam phases corresponding to optimal beam directions of the auxiliary device transmission signal within a bandwidth of the third reference signal.

[0169] According to the beam training device of the embodiment of the present application, The mobile station further includes a third receiving module used to receive subband CSI information corresponding to measurement information of subband CSI at different transmission timings of the second reference signal or the third reference signal, reported from a terminal device.

[0170] According to the beam training device of the embodiment of the present application, the subband CSI information includes CSI of an optimal subband at a transmission timing of each of the second reference signals; Alternatively, the subband CSI information includes CSI of an optimal subband at the transmission timing of each of the third reference signals, Alternatively, the subband CSI information includes CSI of an optimal subband combination, The subband combination includes M frequency hopping subbands paired according to a frequency hopping rule, and the M frequency hopping subbands correspond to M transmission timings of the second reference signal or M transmission timings of the third reference signal.

[0171] According to the beam training device of the embodiment of the present application, The method further includes a transmission module, which is used to schedule data transmission using an optimal combination of subbands and the optimal transmission mode after the first determination module determines the optimal transmission mode of the auxiliary device according to the measurement information.

[0172] According to the beam training apparatus of the embodiment of the present application, the transmitting module performs data transmission on an optimal subband, which is a subband in the optimal combination; Alternatively, it may be used to perform the step of transmitting data on the M frequency-hopping subbands of the subband combination in sequence in a frequency-hopping manner.

[0173] According to the beam training device of the embodiment of the present application, before scheduling data transmission using the optimal combination of subbands and the optimal transmission mode, sending, to the auxiliary device, fourth configuration information indicating an optimal transmission mode of the auxiliary device corresponding to an optimal subband for data transmission; Alternatively, the wireless communication device may further include a sixth transmitting module adapted to perform the step of transmitting fifth configuration information to the auxiliary device, the fifth configuration information indicating transmission modes of the M auxiliary devices corresponding to the M subbands for data transmission.

[0174] According to the beam training device of the embodiment of the present application, performing an offset process on the array information of the auxiliary device transfer beam; The system further comprises a control module used to control the beam phase of the auxiliary device in at least one manner of calculating array information of the auxiliary device transfer beam with different discretization indices.

[0175] According to the beam training device of the embodiment of the present application, at least two reference signals for beam training are transmitted, measurement information reported from the terminal equipment is obtained, and the optimal transmission mode of the auxiliary device is determined based on the measurement information, that is, the optimal beam direction and optimal beam phase of the auxiliary device are determined, thereby controlling the multipath phase to improve the effect of frequency selective fading.

[0176] Specifically, an embodiment of the present application further provides a network device. As shown in Fig. 8, the network device 800 includes an antenna 801, a radio frequency device 802, and a baseband device 803. The antenna 801 is connected to the radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information through the antenna 801 and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be transmitted and transmits it to the radio frequency device 802, and the radio frequency device 802 processes the received information before transmitting it via the antenna 801.

[0177] The above-mentioned frequency band processing device may be located in a baseband device 803 , and the method performed by the network device in the above-mentioned embodiment may be implemented in the baseband device 803 , which includes a processor 804 and a memory 805 .

[0178] The baseband device 803 may, for example, include at least one baseband board having multiple chips installed thereon, and as shown in FIG. 8, one of the chips may, for example, be a processor 804 connected to a memory 805 to call a program in the memory 805 to perform the operations of the network equipment illustrated in the above method embodiments.

[0179] The baseband device 803 may further include a network interface 806 for communicating with the radio frequency device 802, the interface being, for example, a common public radio interface (CPRI).

[0180] Specifically, the network device of the embodiment of the present invention further includes a command or program stored in memory 805 and executable by processor 804, and processor 804 calls the command or program in memory 805 to execute the method performed by each module shown in Figure 7, thereby achieving the same technical effect. In order to avoid repetition, detailed description here is omitted.

[0181] An embodiment of the present application further provides a readable storage medium that stores a program or command, and when the program or command is executed by a processor, each step of the above beam training embodiment is realized and the same technical effect can be achieved, and detailed description thereof will be omitted here to avoid repetition.

[0182] The processor may be the processor in the terminal device described in the above embodiment. The readable storage medium may include a computer readable storage medium such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0183] The embodiments of the present application include a processor and a communication interface, and the communication interface and the processor are coupled together, and the processor executes a program or command of a network device to realize each step of the above-mentioned beam training method embodiment. A chip that can achieve the same technical effect is also provided, and detailed descriptions thereof will be omitted here to avoid repetition.

[0184] It should be understood that the chips described in the embodiments of this application may also be referred to as system chips, chip systems, system-on-chips, or the like.

[0185] It should be noted that, as used herein, the terms "comprise," "consist," and any other variations thereof are intended to include a non-exclusive inclusion, such that a process, method, article, or apparatus comprising a set of elements includes not only those elements but also other elements not expressly specified or inherent in such process, method, article, or apparatus. Unless otherwise specified, elements qualified by the phrase "comprise..." do not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. It should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may include performing functions in an essentially simultaneous manner or in the reverse order, depending on the functionality involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. It should be noted that features described with reference to some examples may be combined with other examples.

[0186] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be realized in the form of a combination of software and a necessary common hardware platform, and of course, they can also be realized by hardware, but in many cases the former is a more preferred embodiment. Based on this view, the technical solutions of the present application can be substantially embodied in the form of a software product, and the computer software product is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions that cause a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0187] Although the embodiments of the present application have been described above with reference to the drawings, the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative and not restrictive. Based on the teachings of the present application, many modifications that a person skilled in the art can make without departing from the spirit and scope of protection of the present application and the claims are all within the scope of protection of the present application.

Claims

1. A beam training method applied to a terminal device, a step of measuring at least two reference signals for beam training transmitted by an auxiliary device in at least two transmission modes and obtaining measurement information, the measurement information being for indicating an optimal transmission mode of the auxiliary device, and the transmission mode of the auxiliary device being determined by a beam direction and a beam phase of the transmission signal of the auxiliary device; reporting the measurement information to a network device; A beam training method, wherein the auxiliary device includes an intelligent surface.

2. The reference signal is a first reference signal transmitted from the network device for determining a beam direction of the auxiliary device; and a second reference signal transmitted from the network equipment for determining the beam phase of the auxiliary device.

3. Before the step of measuring at least two beam training reference signals transmitted by the auxiliary device in at least two transmission modes, The method further includes receiving first instruction information and second instruction information transmitted from the network device; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The beam training method of claim 2, wherein the second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

4. A beam training method according to claim 2 or 3, wherein the first frequency range corresponding to the second reference signal is equal to or greater than the second frequency range, and the second frequency range is a frequency range corresponding to data transmission between a terminal device and a network device.

5. The step of measuring at least two reference signals for beam training transmitted by the auxiliary device in at least two transmission modes and obtaining measurement information includes: measuring the first reference signal to obtain first measurement information for indicating an optimal beam direction of the auxiliary device transmitted signal within a bandwidth of the first reference signal; 3. The beam training method of claim 2, further comprising: measuring the second reference signal and obtaining second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device transfer signal within a bandwidth of the second reference signal.

6. the reference signal is a third reference signal; the third reference signal is a reference signal transmitted from a network device for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; The beam training method of claim 1, wherein N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

7. Before the step of measuring at least two beam training reference signals transmitted by the auxiliary device in at least two transmission modes, receiving third instruction information transmitted from the network device; The beam training method of claim 6, wherein the third instruction information is time-frequency resource allocation information of the third reference signal, and the third instruction information corresponds to at least M*N transmission timings, where N is less than or equal to the number of beam directions of the auxiliary device transmission signal, and M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

8. A beam training method applied to a network device, comprising: transmitting at least two beam training reference signals; A step of acquiring measurement information to be reported from a terminal device, the measurement information being obtained after the terminal device measures the at least two reference signals for beam training that are transmitted by an auxiliary device in at least two transmission modes, and the transmission mode of the auxiliary device is determined by the beam direction and beam phase of the transmission signal of the auxiliary device; determining an optimal transfer mode for the auxiliary device according to the measurement information; A beam training method, wherein the auxiliary device includes an intelligent surface.

9. The reference signal is a first reference signal for determining the beam direction of the auxiliary device; and a second reference signal for determining the beam phase of the auxiliary device.

10. Before the step of obtaining measurement information to be reported from the terminal device, further comprising the step of transmitting first instruction information and second instruction information to the terminal device; The first indication information is time-frequency resource allocation information of the first reference signal, and the first indication information corresponds to at least N transmission timings, where N is equal to or less than the number of beam directions of the auxiliary device transmission signal; The beam training method of claim 9, wherein the second instruction information is time-frequency resource allocation information of the second reference signal, and the second instruction information corresponds to at least M transmission timings, where M is less than or equal to the number of beam phases of the auxiliary device transmission signal.

11. Before the step of obtaining measurement information to be reported from the terminal device, further comprising transmitting the first configuration information and the second configuration information to the auxiliary device; the first arrangement information is time domain arrangement information of beam directions of the N transmission signals of the auxiliary device, and the time domain arrangement information corresponds one-to-one to the N transmission timings of the first reference signal; 11. The beam training method according to claim 10, wherein the second arrangement information is time-domain arrangement information of M beam phases corresponding to an optimal beam direction of the auxiliary device, the time-domain arrangement information corresponds one-to-one to M transmission timings of the second reference signal, and the optimal beam direction is determined by the first reference signal.

12. The measurement information is First measurement information for indicating an optimal beam direction of the auxiliary device transmitted signal within a bandwidth of the first reference signal; and second measurement information for indicating an optimal beam phase corresponding to an optimal beam direction of the auxiliary device forwarded signal within a bandwidth of the second reference signal.

13. the reference signal is a third reference signal; the third reference signal is a reference signal for determining a beam direction and a beam phase of the auxiliary device, and the number of transmission timings of the third reference signal is M*N; The beam training method of claim 8, wherein N is the number of beam directions of the auxiliary device transmission signal arranged by the network equipment, M is the number of beam phases of each transmission beam arranged by the network equipment, the transmission timing of each third reference signal corresponds to one beam direction and one beam phase of the auxiliary device, and the transmission beams and / or beam phases corresponding to different beam training signals are different.

14. A terminal device comprising a processor, a memory, and a program or command stored in the memory and executable by the processor, wherein when the program or command is executed by the processor, the steps of the beam training method described in any one of claims 1 to 7 are realized.

15. A network device comprising a processor, a memory, and a program or command stored in the memory and executable by the processor, wherein when the program or command is executed by the processor, the steps of the beam training method described in any one of claims 8 to 13 are realized.

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