Method for identifying smart surface devices, communication devices and smart surface devices

Abstract

The present application discloses a method for identifying a smart surface device, a communication device, and a smart surface device, belonging to the field of wireless communication technology. The method for identifying a smart surface device in an embodiment of the present application includes: a first communication device transmitting a first signal; and the first communication device acquiring identification information related to the smart surface device, wherein the identification information is information acquired by the first communication device by detecting an echo signal of the first signal, or information acquired by a second communication device by detecting an echo signal of the first signal and forwarded to the first communication device.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This invention claims priority to a Chinese patent application submitted to the China Patent Office on May 21, 2021, bearing application number 202110558922.4 and titled "Identification method for smart surface device, communication device and smart surface device", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of wireless communication technology, and in particular to an identification method for a smart surface device, a communication device, and a smart surface device. [Background technology]

[0003] In wireless environments, smart surface devices are commonly used in mobile communication systems as auxiliary relays to establish controllable propagation channels, improve the wireless communication environment, and enhance the receiving end signal quality.

[0004] Currently, when a smart surface device is in use, the location of the smart surface device relative to a base station is known, and the channel between the two is a static or semi-static channel. However, when the base station or terminal does not know the existence of the smart surface device, or the location of the smart surface device is unknown, there is still no definite idea of ​​how the base station or terminal can identify the smart surface device. Summary of the Invention [Problem to be solved by the invention]

[0005] The embodiments of the present application provide a method for identifying a smart surface device, a communication device, and a smart surface device that can solve the problem of how to identify a smart surface device when the smart surface device is unknown. [Means for solving the problem]

[0006] According to a first aspect, there is provided a method for identifying a smart surface device, the method including a first communication device transmitting a first signal and the first communication device acquiring identification information related to the smart surface device, the identification information being information acquired by the first communication device by detecting an echo signal of the first signal, or information acquired by a second communication device by detecting an echo signal of the first signal and forwarded to the first communication device.

[0007] According to a second aspect, there is provided an identification apparatus for a smart surface device for use in a first communication device, the apparatus including: a transmitting module for transmitting a first signal; and an acquisition module for acquiring identification information relating to the smart surface device, the identification information being information acquired by the first communication device by detecting an echo signal of the first signal, or information acquired by a second communication device by detecting an echo signal of the first signal and forwarded to the first communication device.

[0008] According to a third aspect, there is provided a signal reflection method, the signal reflection method including: a smart surface device receiving a first signal transmitted by a first communication device; and the smart surface device reflecting the first signal in a specific reflection mode to transmit an echo signal of the first signal.

[0009] According to a fourth aspect, there is provided a signal reflecting apparatus for use in a smart surface device, the apparatus including: a receiving module for receiving a first signal transmitted by a first communication device; and a reflecting module for reflecting the first signal in a specific reflection mode and transmitting an echo signal of the first signal.

[0010] According to a fifth aspect there is provided a communications device comprising a processor, a memory and a program or instructions stored in said memory and operable to run on said processor, said program or instructions, when executed by said processor, implementing steps of the method of the first aspect.

[0011] According to a sixth aspect, there is provided a communication device, the communication device comprising a processor and a communication interface, wherein the processor is adapted to implement the steps of the method according to the first aspect, and the communication interface is adapted to communicate with an external communication device.

[0012] According to a seventh aspect there is provided a smart surface device comprising a processor, a memory and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, implementing steps of the method of the third aspect.

[0013] According to an eighth aspect, there is provided a smart surface device comprising a processor and a communication interface, wherein the processor is adapted to implement the steps of the method according to the third aspect, and the communication interface is adapted to communicate with an external communication device.

[0014] According to a ninth aspect, there is provided a readable storage medium having a program or instructions stored thereon, the program or instructions being operable, when executed by a processor, to effectuate steps of the method according to the first aspect or to effectuate steps of the method according to the third aspect.

[0015] According to a tenth aspect, there is provided a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor running a program or instructions to perform steps of the method of the first aspect or to be used to perform steps of the method of the third aspect.

[0016] According to an eleventh aspect, there is provided a computer program / program product, the computer program / program product being stored on a non-transitory storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method according to the first aspect or to implement the steps of the method according to the third aspect. Effect of the Invention

[0017] In an embodiment of the present application, a first communication device transmits a first signal, and the smart surface device receives and reflects an echo signal of the first signal, and by detecting the echo signal by the first communication device or the second communication device, identification information associated with the smart surface device can be obtained, thereby identifying the smart surface device if the smart surface device is unknown. [Brief description of the drawings]

[0018] [Figure 1] 1 shows a schematic diagram of a wireless communication system to which an embodiment of the present application can be applied; [Diagram 2] 1 shows a flowchart of a method for identifying a smart surface device according to an embodiment of the present application. [Diagram 3] 2 shows a schematic diagram of a detection signal and an echo signal in an embodiment of the present application; [Figure 4] 1 shows a schematic diagram of another detection signal and an echo signal in an embodiment of the present application. [Diagram 5] 1 shows a schematic diagram of echo signal monitoring time in an embodiment of the present application. [Figure 6] 13 shows a schematic diagram of another echo signal monitoring time in an embodiment of the present application. [Figure 7] 2 shows a flow chart of a signal reflection method according to an embodiment of the present application. [Figure 8] 1 shows a schematic diagram of an echo signal in an embodiment of the present application; [Figure 9] 1 shows a structural schematic diagram of an identification device for a smart surface device according to an embodiment of the present application. [Figure 10] 1 shows a structural schematic diagram of a signal reflecting device according to an embodiment of the present application; [Figure 11] 1 shows a structural schematic diagram of a communication device according to an embodiment of the present application; [Figure 12] 1 shows a hardware structure schematic diagram of a terminal according to an embodiment of the present application; [Figure 13] 1 shows a schematic hardware structure diagram of a network side device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The following clearly describes the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application are all within the scope of protection of the present application.

[0020] The terms "first," "second," etc. in the specification and claims of the present application are intended to distinguish between similar objects and are not intended to describe a particular order or sequence. It is to be understood that the terms so used are interchangeable where appropriate, such that the embodiments of the present application may be performed in an order other than that shown or described herein, and that the objects distinguished by "first" and "second" are generally of the same type and do not limit the number of objects, e.g., the first object may be one or more. It is to be noted that "and / or" in the specification and claims represents at least one of the objects connected, and the character " / " generally represents an "or" relationship between the related objects.

[0021] It should be noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be applied to other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are always used interchangeably, and the techniques described may be used in the above-mentioned systems and radio technologies, or in other systems and radio technologies. Although the following description describes a New Radio (NR) system for illustrative purposes and uses NR terminology in most of the following description, these technologies may also be used in applications other than NR system applications, such as sixth generation (6G) systems. th This may be applied to a 6G (6th Generation) communication system.

[0022] FIG. 1 shows a schematic diagram of a wireless communication system to which the embodiment of the present application can be applied. The wireless communication system includes a terminal 11, a wireless assistant device 13, and a network side device 12. Here, the terminal 11 may be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a terminal side device such as a mobile phone, a tablet computer, a laptop computer (or called a notebook computer), a personal digital assistant (PDA), a palmtop computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc., and the wearable device includes a bracelet, an earphone, glasses, etc. It should be explained that the specific type of the terminal 11 in the embodiment of the present application is not limited. The network side device 12 may be a base station or a core network, where the base station is ,a access point, base transceiver station (BTS), radio base station, radio transmitter / receiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmission point ( Transmission ReceptionThe base station is not limited to a specific technical term, so long as the same technical effect is achieved. The smart surface device 13 may be a large intelligent surface (LIS), or a reconfigurable intelligent surface (RIS), or a passive smart surface device, or an active smart surface device, or a combination of active and passive smart surface devices, or a layer 1 (L1) relay device, or an L1 repeater, or a backscatter. The large smart surface device may be called an intelligent reflected surface, a smart super surface, a programmable / reconfigurable super surface, etc. Here, the smart surface device may have a beamforming function or may not have a beamforming function.

[0023] In the embodiment of the present application, the terminal 11 or the base station 12 may have a communication and sensing integration function. Here, communication and sensing integration refers to realizing the integrated design of communication and sensing functions in the same system through spectrum sharing and hardware sharing, the system can sense information such as direction, distance, speed, etc. while transmitting information, and can detect, track and identify target devices or events, the communication system and the sensing system are complementary, realizing the improvement of overall performance and bringing a better service experience.

[0024] The integration of communication and radar belongs to a typical application of communication and sensing. In the past, radar systems and communication systems have been strictly distinguished due to different research objects and points of interest, and in most scenarios, the two systems are distributed and studied. In fact, radar and communication systems are both typical ways of transmitting, acquiring, processing and exchanging information, and there are many similarities in the working principle, system architecture and frequency band. The design of the integration of communication and radar is relatively feasible, which is mainly manifested in the following several points. First, the communication system and the sensing system are both based on electromagnetic wave theory and use electromagnetic wave emission and reception to complete the acquisition and transmission of information. Secondly, the communication system and the sensing system are both equipped with antennas, transmitting ends, receiving ends, signal processors and other structures, and have a very large overlap in hardware resources. With the development of technology, both have more and more overlap in the working frequency band, and also have similarities in key technologies such as signal modulation, receiving detection, and waveform design. The fusion of communications and radar systems can provide many advantages, such as cost savings, reduced size, reduced power consumption, increased spectral efficiency, and reduced mutual interference, thereby improving overall system performance.

[0025] As typical ways of transmitting, acquiring, processing and exchanging information, radar and communication systems have many similarities in their working principles, system architectures and frequency bands. Therefore, communication and radar can be integrated. In the related art, the integrated design for radar and communication systems includes: spectrum coexistence, i.e., both systems can work independently and allow information exchange to reduce interference between each other; receiving side sharing, in which the transmitting ends of both systems transmit their respective signal waveforms, and the waveforms of both systems need to have orthogonality so as not to affect the receiving detection of each other; transmitting end sharing, i.e., the transmitting end emits an integrated waveform of radar and communication; and transmitting and receiving end sharing, i.e., both sides of the transmitting and receiving of both systems share resources, and they also need to use integrated waveforms or waveforms with orthogonal relationship.

[0026] When radar sensing function is introduced into a mobile communication system, sensing can be based on single station mode, i.e., transmit / receive collocation, the transmitting end emits a sensing signal, and then receives and analyzes the echo signal by itself to extract sensing parameters, for example, the base station is the transmitting end and receiving end of the sensing signal, and the terminal or other object is the sensing target; sensing can also be based on double station / multi-station mode, i.e., not transmit / receive collocation, the transmitting end emits a sensing signal, and the other receiving end receives and analyzes to extract sensing parameters, for example, the base station A is the sensing signal transmitting end, and the terminal or base station B is the sensing signal receiving end.

[0027] It should be noted that in the embodiments of the present application, only base stations in an NR system are taken as examples, but the specific type of base station is not limited thereto.

[0028] The following describes in detail the identification method for smart surface devices according to the embodiments of the present application through several embodiments and their application scenarios in conjunction with the drawings.

[0029] 2 shows a flowchart of a method for identifying a smart surface device in an embodiment of the present application, and the method 200 may be executed by a first communication device. In other words, the method may be executed by software or hardware installed in the first communication device. As shown in FIG. 2, the method may include the following steps:

[0030] S210, a first communication device transmits a first signal.

[0031] In the embodiment of the present application, the first communication device may be a base station or a terminal, and the first communication device may have a radar detection function.

[0032] In an embodiment of the present application, the first signal may be a sensing signal, for example, when the first communication device needs to know whether there is a smart surface device in the surrounding environment, it can send a sensing signal to the surrounding environment.

[0033] In an embodiment of the present application, the first signal may include one of the following (1) to (3):

[0034] (1) A sensing signal for realizing a sensing function. For example, the first signal is a signal for sensing a target object, an event or an environment, such as a radar signal, such as a pulse signal or a frequency modulated continuous wave signal.

[0035] (2) A communication signal for transmitting information. That is, the first signal is a signal used only for transmitting information between a transmitter and a receiver. For example, the first signal is a Synchronization Signal and Physical Broadcast Channel signal block (or Synchronization Signal Block) (SSB).

[0036] (3) An integrated communication-sensing signal for implementing a sensing function and transmitting information, that is, the first signal is a signal used for both communication and implementing a sensing function.

[0037] In the embodiment of the present application, the first communication device may transmit the first signal in a manner of beam scanning, or in a manner of simultaneously transmitting multiple beams, or in a manner of omnidirectional transmission. For example, the first communication device may transmit the first signal in a manner of beam scanning based on a beam angle set {α1, α2, α3, ..., αn}, i.e., transmit beams in different directions at different times.

[0038] S212, the first communication device obtains identification information related to the smart surface device, where the identification information is information obtained by the first communication device by detecting an echo signal of the first signal, or information obtained by a second communication device by detecting an echo signal of the first signal and forwarded to the first communication device.

[0039] In an embodiment of the present application, after receiving a first signal, the smart surface device reflects the first signal, i.e., transmits an echo signal of the first signal, and by utilizing the feature that the smart surface device can increase or control the echo, the smart surface device can identify the smart surface device in the current communication environment of the first communication device by monitoring the echo signal transmitted by the smart surface device.

[0040] In one possible implementation of the embodiment of the present application, in order for the smart surface device to echo the first signal, the first signal may include a control command for controlling the reflection mode in which the smart surface device reflects the first signal. That is, the control command controls the reflection mode in which the smart surface device reflects the first signal. For example, the angle at which the smart surface device reflects the first signal may be controlled. Optionally, the control command may be related to at least one angle in a set of beam transfer angles preset by the smart surface device. In this possible implementation, the control command for the signal reflection mode (also called a transfer mode) of the smart surface device in the first signal transmitted by the first communication device each time is related to at least one angle in a set of beam transfer angles preset by the smart surface device.

[0041] For example, when the first signal is a communication signal for transmitting information or an integrated communication and sensing signal for implementing a sensing function and transmitting information, the first signal may include the control command.

[0042] In another possible implementation, the first communication device may transmit a first trigger signal to trigger the smart surface device to use a specific reflection mode, whereby the first trigger signal can trigger the smart surface device to use a specific reflection mode, so that the smart surface device can reflect a first signal in a prescribed manner.

[0043] In a specific application, when the first communication device emits the first trigger signal, it may transmit in an omnidirectional transmitting manner, or in a beam scanning manner based on the beam angle set {α1, α2, α3, ..., αn}, i.e., transmitting beams in different directions at different times, or in a multi-beam transmitting manner, etc.

[0044] Optionally, the first trigger signal is included in the first signal. For example, when the first signal is a communication signal for transmitting information or an integrated communication-sensing signal for implementing a sensing function and transmitting information, the first signal may include the first trigger signal. For example, the first communication device may carry the first trigger signal in the first signal when the first signal is emitted or the first signal is emitted several times before.

[0045] Optionally, the first communication device may transmit the first trigger signal in a broadcast manner to trigger the specific reflective mode of the smart surface device.

[0046] In one possible implementation manner, in order to ensure security, the first communication device may further include identity indication information in the first signal to indicate the identity of the first communication device. The smart surface device may determine whether the first communication device is a legitimate device, i.e., whether the first signal is a legitimate detection signal, based on the identity indication information. For example, a communication signal for transmitting information or a communication-sensing integrated signal for implementing a sensing function and transmitting information includes validity indication information such as specific identity information of a base station or a terminal, and if the smart surface device cannot identify the valid indication information, it does not perform valid reflection of the signal. For example, a detection signal emitted by a base station or a terminal includes a pre-agreed signal format, and the smart surface device determines whether the detection signal is a legitimate detection signal including identity validity indication information of a base station or a terminal by monitoring and detecting the received signal. For example, a communication signal or a communication-sensing integrated signal emitted by a base station or a terminal includes a training sequence related to its own identity information, and the smart surface device determines whether the detection signal is a legitimate detection signal by whether a matched filtering detection peak value exceeds a threshold value.

[0047] In another possible implementation, the default reflection mode of the smart surface device may be the specific reflection mode. In this possible implementation, in order for the smart surface device to perform a forwarding operation normally after identification, after S212, the method may further include the first communication device sending first instruction information to the smart surface device, where the first instruction information instructs the smart surface device to end the specific reflection mode, which is the default reflection mode of the smart surface device. That is, in this possible implementation, the default configuration and / or pre-configuration of the smart surface device is the specific reflection mode, i.e., when there is no signal forwarding behavior (i.e., there is no associated serving base station or terminal), the smart surface device forwards signals in the default configuration, and instructs it to stop using the default forwarding mode after the base station or terminal completes identification.

[0048] In one possible implementation, the specific reflection mode may include one of the following (1) and (2).

[0049] (1) First reflection mode, where in the first reflection mode, the smart surface device reflects the received signal using an angle in a preset beam transfer angle set. In this possible implementation, the variation range from the minimum angle to the maximum angle in the beam transfer angle set includes the reflection angle corresponding to the incident angle, i.e., the azimuth angle at which the emitter is located, or the azimuth angle at which the potential receiver is located. That is, the smart surface device reflects based on a preset beam transfer angle set {θ1, θ2, θ3, ..., θn}, and assuming that θ1<θ2<θ3< ...<θn, the reflection angle α corresponding to the incident angle and the angle in the set satisfy the relationship θ1≦α≦θn.

[0050] Wherein, in the first reflection mode, one first signal may correspond to each angle of the beam transfer angle set, i.e. for one first signal, the smart surface device performs traverse reflection on the angles in the beam transfer angle set. In this case, the first duration for the first communication device to transmit the single first signal is at least greater than the total mode switching time required for the smart surface device to traverse each angle in the beam transfer angle set. In this possible implementation, after receiving a first signal (e.g., a sensing pulse signal), the smart surface device performs traverse reflection based on the angles in the angle set for the duration of the single first signal, as shown in FIG.

[0051] Or in a first reflection mode, one of the first signals corresponds to one angle of the beam transfer angle set, i.e. for one first signal, the smart surface device reflects at one angle in the beam transfer angle set. In this case, the number of the first signals transmitted by the first communication device using the same angle and / or the same beam direction is at least greater than the number of angles in the beam transfer angle set. In this possible implementation, as shown in FIG. 4, the smart surface device reflects based on an angle in the angle set during the duration of a single pulse signal (i.e., the first signal), and in this possible implementation, the number of pulses emitted by the first communication device in each direction is at least equal to or greater than the number of elements in the preset angle set of the smart surface. Alternatively, the smart surface device may reflect based on an angle in the angle set during the duration of multiple pulse signals (i.e., the first signal), i.e., one reflection angle corresponds to multiple pulse signals, which facilitates the cumulative detection of echo pulses by the first communication device and improves the detection performance. In this case, the number of pulses emitted by the first communication device in each direction is at least equal to or greater than the product of the number of elements in the preset set of angles of the smart surface and the number of pulse signals corresponding to each angle.

[0052] In the above case, in order to ensure that the first communication device can monitor the echo signal corresponding to each first signal, the start time of the next first signal transmitted by the first communication device using the same angle and / or the same beam direction is later than the end time of the echo monitoring of the previous first signal.

[0053] (2) A second reflection mode, where in the second reflection mode, the smart surface device reflects the received signal using an angle corresponding to the direction of arrival, that is, in this possible implementation, the smart surface device may form a forwarding beam according to the direction of arrival to reflect all the signals, and in this possible implementation, the smart surface device may include an active unit, which can perform AoA estimation to obtain the direction of arrival of the first signal.

[0054] In one possible implementation, the first communication device may monitor an echo signal of the first signal after transmitting the first signal, where the second duration of monitoring may be according to a maximum detection distance of the first communication device and / or a first duration of transmitting the single first signal. For example, for the reflection mode shown in FIG. 4, the first communication device may determine the second duration of monitoring based on a maximum detection distance Dmax, and for the reflection mode shown in FIG. 3, the first communication device may determine the second duration of monitoring based on a first duration of the first signal. Or, the first communication device may determine the second duration based on a maximum detection distance and the first duration, for example, the second duration T1 and the maximum detection distance Dmax are determined based on the first duration of the first signal. first The following relationship with duration T is satisfied.

[0055] Tl≧2Dmax / c+T, where c is the speed of light.

[0056] In one possible implementation manner, the first communication device may monitor the echo signal of the first signal, and then determine whether there is a smart surface device in the launch angle and / or beam direction of the first signal based on the strength of the monitored echo signal, for example, determine whether there is a smart surface device in the current beam direction according to the relationship between a Received Signal Strength Indication (RSSI) or a related peak value after correlating with the echo and a threshold value, and if the RSSI or the related peak value exceeds the threshold value, it is determined that there is a smart surface device in the launch direction and / or beam direction of the first signal, otherwise it is determined that there is no smart surface device in the launch direction and / or beam direction of the first signal.

[0057] For example, when the first communication device is in full-duplex mode, the monitoring start time may start at least from the transmission of the detection signal, and as shown in Fig. 5, the first communication device starts monitoring the echo signal at the start time of the pulse detection signal emitted in a specific direction α1. Of course, this is not limited to the above, and if the first communication device can determine the latest time at which it starts to receive the echo signal based on its maximum detection distance Dmax, it only needs to start monitoring before this time, and specifically, this is not limited in the embodiment of the present application.

[0058] When the first communication device is in half-duplex mode, the monitoring start time may start at least from the completion of the transmission of the detection signal, as shown in Fig. 6. Of course, this is not limited to this, and if the first communication device can determine the latest time at which it starts to receive the echo signal based on its maximum detection distance Dmax, it only needs to start monitoring before this time, and is not specifically limited in the embodiment of the present application.

[0059] In one possible implementation of the embodiment of the present application, the smart surface device may reflect a first signal and change the characteristic information of the first signal according to a first rule to indicate its identity in the echo signal. Therefore, in this possible implementation, the first communication device obtaining the identification information may further include the first communication device detecting the characteristic information of the echo signal and identifying the identity of the smart surface device based on the detection result, where the characteristic information includes at least one of width, phase, polarization, and orbital angular momentum information. Furthermore, the first communication device may obtain information such as distance, moving speed, angle, etc. of the corresponding smart surface device by analyzing the echo signal.

[0060] In one possible implementation, a first communication device may cooperate with a second communication device to realize identification of a smart surface device, in which the first communication device acquires identification information by sending second instruction information to the second communication device, the second instruction information including at least one of an instruction to activate echo monitoring and a format of the first signal, and the first communication device receives the identification information sent by the second communication device, the identification information being acquired by the second communication device by monitoring and analyzing an echo signal of the first signal, and the identification information includes third instruction information for indicating whether a smart surface device is present in an emission angle and / or beam direction of the first signal.

[0061] In a specific application, after receiving the second instruction information sent by the first communication device, the second communication device may use the same manner as the first communication device to monitor and analyze the echo signal of the first signal to obtain the identification information, and specifically, this will not be further described in the embodiments of the present application.

[0062] Optionally, the identification information returned by the second communication device may include an identity of the smart surface device.

[0063] In one possible implementation manner, the second communication device may return only related information of the echo signal of the monitored first signal to the first communication device, and the first communication device may analyze based on the related information of the echo signal to obtain the identification information.

[0064] In the above possible implementation manner, the second communication device may monitor an echo signal of one first signal, and then return identification information corresponding to the echo signal to the first communication device once. Or, the first communication device may indicate the format of the first signal in the second instruction information, where the format of the first signal includes at least one of the waveform, sequence information, transmission angle, and beam direction of the first signal. Optionally, the identification information returned by the second communication device may further include a target transmission angle and / or a target beam direction, where the target transmission angle and / or the target beam direction are the transmission angle and / or the beam direction of the first signal corresponding to the echo signal. In this case, the second communication device may monitor and analyze the echo signals of multiple first signals, and then return identification information corresponding to multiple first signals to the first communication device all at once.

[0065] In the embodiment of the present application, the second communication device may be a base station or a terminal, and is not specifically limited in the embodiment of the present application.

[0066] For example, base station A sends instruction information to base station B, which may include an instruction to activate echo monitoring, a format of the detection signal to be transmitted, etc. Base station B receives the instruction information of base station A and activates listening. Base station A emits a first trigger signal into the surrounding environment (optional). Base station A emits a detection signal into the surrounding environment. The smart surface device operates in a specific reflection mode and reflects the detection signal. Base station B receives and analyzes the echo characteristics, determines whether a smart surface device exists in the emission direction and / or beam transmission direction in which base station A transmits the detection signal, and may further obtain smart surface identity information. The information that base station B feeds back to base station A includes at least an indication information of whether a smart surface device exists in the emission direction and / or beam transmission direction in which base station A transmits the detection signal, and may further include identity indication information of the smart surface device, etc.

[0067] Also, for example, the base station may send instruction information to the terminal, and the instruction information may include an instruction to activate echo monitoring, a format of the detection signal to be transmitted, etc. The terminal receives the instruction information of the base station and activates listening. The base station emits a first trigger signal into the surrounding environment (optional step). The base station emits a detection signal into the surrounding environment. The smart surface device operates in a specific reflection mode and reflects the detection signal. The terminal may receive and analyze the echo characteristics, determine whether a smart surface device exists in the emission direction and / or beam transmission direction in which the base station transmits the detection signal, and further obtain smart surface identity information. The information that the terminal feeds back to the base station includes at least an instruction information of whether a smart surface device exists in the emission direction and / or beam transmission direction in which the base station transmits the detection signal, and may further include identity indication information of the smart surface device, etc.

[0068] According to the technical solution of the embodiment of the present application, when a base station or a terminal has a radar sensing function, it can use the echo signal to detect and identify smart surface devices in the surrounding environment.

[0069] 7 shows a flow chart of a signal reflection method in an embodiment of the present application, where the method 700 may be executed by a smart surface device. In other words, the method may be executed by software or hardware installed in the smart surface device. As shown in FIG. 7, the method may include the following steps:

[0070] S710, the smart surface device receives a first signal transmitted by a first communication device.

[0071] Here, the first signal is the same as the first signal in method 200, and specifically, reference may be made to the relevant description in method 200, and no further description will be given here.

[0072] In an embodiment of the present application, the first communication device may transmit the first signal using the manner described in method 200, specifically, reference may be made to the relevant description in method 200, and no further description will be given here.

[0073] S712, the smart surface device reflects the first signal in a specific reflection mode and transmits an echo signal of the first signal.

[0074] In one possible implementation manner, before S712, the method may further include the smart surface device receiving a first trigger signal transmitted by the first communication device and setting the reflection mode of the smart surface device to the specific reflection mode.

[0075] Optionally, the first trigger signal may be included in the first signal.

[0076] In another possible implementation manner, before S712, the method may further include: the smart surface device enters the specific reflection mode, which is the default reflection mode of the smart surface device, in the absence of a signal forwarding behavior, i.e., in this possible implementation manner, the smart surface device operates in the specific reflection mode by default.

[0077] Optionally, in the above possible implementation manner, after the smart surface device reflects the first signal in a specific reflection mode, the method may further include receiving first instruction information transmitted by the first communication device, the first instruction information instructing the smart surface device to terminate the specific reflection mode, and stopping use of the specific reflection mode in accordance with the instruction of the first instruction information.

[0078] In one possible implementation, before S712, the method may further include: determining identity indication information included in the first signal, and determining that the identity of the first communication device indicated by the identity indication information is valid. For example, the first signal emitted by the first communication device includes a pre-agreed signal format, and the smart surface device determines that the first communication device is valid. For example, the first communication device includes a training sequence related to the identity information of the first communication device in the first signal, and the smart surface device determines that the first signal includes the training sequence and matches the predetermined training sequence in the manner of whether the matched filtering detection peak value exceeds a threshold value.

[0079] In one possible implementation, the particular reflection mode is: a first reflective mode in which the smart surface device reflects the received signal using angles in a preset set of beam transfer angles; or The smart surface device includes a second reflective mode in which the smart surface device reflects the received signal using an angle corresponding to the direction of arrival of the wave.

[0080] In one possible implementation, the smart surface device reflecting the first signal in a specific reflection mode includes one of the following:

[0081] (1) The smart surface device obtains the direction of arrival of the first signal, and reflects the first signal using an angle corresponding to the direction of arrival, for example, the smart surface device forms a forwarding beam according to the direction of arrival and reflects all signals, and in this possible implementation, the smart surface device includes an active unit and can perform AoA estimation.

[0082] (2) The smart surface device performs traverse reflection based on each angle in the beam transfer angle set for one of the received first signals, that is, in this possible implementation manner, reflecting the angle at which the first signal is reflected may perform traverse reflection based on the angles in the angle set for the duration of a single first signal after receiving the first signal, as shown in FIG.

[0083] (3) The smart surface device reflects at least one of the received first signals using one angle in the set of beam-transfer angles, i.e., the smart surface device reflects based on one angle in the set of beam-transfer angles for the duration of a single first signal (e.g., a pulse signal), as shown in FIG.

[0084] In particular, reference may be made to the relevant description in the method 200, which will not be further described here.

[0085] In another possible implementation, the first signal may include a command to control a reflection mode of the smart surface device. In this possible implementation, the smart surface device reflecting the first signal in a specific reflection mode includes the smart surface device reflecting the first signal using a reflection mode corresponding to the control command based on the control command included in the first signal, where the angle at which the smart surface device reflects the first signal is at least one angle related to the control command in a preset beam transfer angle set. That is, the smart surface device may reflect the first signal using at least one angle related to the control command. That is, the smart surface receives a control command for a signal reflection mode (i.e., a transfer mode) from a first communication device and operates in a corresponding reflection mode, where each reflection angle is related to a control command of a signal transfer pattern carried in the first signal from a base station.

[0086] In one possible implementation, the smart surface device reflecting the first signal in a specific reflection mode includes the smart surface device reflecting by changing characteristic information of the first signal according to a first rule, where the characteristic information includes at least one of width, phase, polarization, and orbital angular momentum information. For example, taking the reflection mode of the smart surface device as an example that the reflection mode of the smart surface device is the second reflection mode, the smart surface device can embed the identity information of the smart surface device by changing the width of the detection signal, as shown in Figure 8, where in Figure 8, the first communication device operates in half-duplex mode.

[0087] It should be noted that in the smart surface device identification method according to the embodiment of the present application, the execution body may be a smart surface device identification device, or a control module for executing the smart surface device identification method in the smart surface device identification device. In the embodiment of the present application, the smart surface device identification device according to the embodiment of the present application is described by taking the execution of the smart surface device identification method by the smart surface device identification device as an example.

[0088] 9 shows a structural schematic diagram of a smart surface device identification device according to an embodiment of the present application, which may be used in a first communication device. As shown in FIG. 9, the device 900 mainly includes a sending module 901 and an acquiring module 902.

[0089] In an embodiment of the present application, the transmitting module 901 is used for transmitting a first signal, and the acquiring module 902 is used for acquiring identification information related to a smart surface device, where the identification information is information acquired by the first communication device by detecting an echo signal of the first signal, or information acquired by the second communication device by detecting an echo signal of the first signal and forwarded to the first communication device.

[0090] In one possible implementation, the first signal is A sensing signal for realizing a sensing function; A communication signal for transmitting information; and a communication-sensing integrated signal for implementing the sensing function and transmitting information.

[0091] In one possible implementation, the first signal includes a control command for controlling a reflection mode in which the smart surface device reflects the first signal.

[0092] In one possible implementation, the sending module 901 further comprises: It is used to send a first trigger signal to trigger the smart surface device to use a particular reflective mode.

[0093] In one possible implementation, the sending module 901 further comprises: After the first communication device obtains the identification information, it is used to send first instruction information to the smart surface device, where the first instruction information instructs the smart surface device to exit a specific reflection mode which is the default reflection mode of the smart surface device.

[0094] In one possible implementation, the first signal includes identity indication information for indicating an identity of the first communication device.

[0095] In one possible implementation, the particular reflection mode is: a first reflective mode in which the smart surface device reflects the received signal using angles in a preset set of beam transfer angles; or The smart surface device includes a second reflective mode in which the smart surface device reflects the received signal using an angle corresponding to the direction of arrival of the wave.

[0096] In one possible implementation, the first communication device or the second communication device monitoring an echo signal of the first signal comprises: determining a second duration for monitoring the echo signal based on a maximum detection distance and / or a first duration for which the first communication device or the second communication device transmits a single first signal; and monitoring the echo signal during the second duration.

[0097] In one possible implementation, when the smart surface device uses a first reflective mode and one first signal corresponds to each angle in the beam transfer angle set, a first duration during which the transmitting module 901 transmits the single first signal is at least greater than the total mode switching time required for the smart surface device to traverse each angle in the beam transfer angle set.

[0098] In one possible implementation, when the smart surface device uses a first reflection mode and one of the first signals corresponds to an angle of the beam transfer angle set, the number of the first signals transmitted by the transmitting module 901 using the same angle and / or the same beam direction is at least greater than the number of angles in the beam transfer angle set.

[0099] In one possible implementation, the start time of the next first signal transmitted by the transmitting module 901 using the same angle and / or the same beam direction is later than the end time of echo monitoring of the previous first signal.

[0100] In one possible implementation manner, the acquiring module 902 acquires the identification information, After transmitting the first signal, monitoring an echo signal of the first signal, and determining whether a smart surface device is present in an angle of launch and / or a beam direction of the first signal based on a strength of the monitored echo signal.

[0101] In one possible implementation manner, the acquiring module 902 acquires the identification information, The method further includes detecting characteristic information of the echo signal and identifying an identity of the smart surface device based on the detection result, where the characteristic information includes at least one of width, phase, polarization, and orbital angular momentum information.

[0102] In one possible implementation manner, the acquiring module 902 acquires the identification information, sending second instruction information to the second communication device, the second instruction information including at least one of an instruction to activate echo monitoring and a format of the first signal; receiving the identification information transmitted by the second communication device, the identification information being obtained by the second communication device by monitoring and processing an echo signal of the first signal, and the identification information including third indication information for indicating whether a smart surface device is present in an emission angle and / or beam direction of the first signal.

[0103] The identification device of the smart surface device in the embodiment of the present application may be a device, or may be a component, integrated circuit, or chip in a terminal or a base station. The terminal may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a deposit payment machine or a self-service machine, and the embodiment of the present application is not specifically limited thereto. The base station may include, but is not limited to, the types of base stations 12 listed above.

[0104] The identification device of the smart surface device in the embodiment of the present application may be a device having an operating system, which may be the Android operating system, the ios operating system, or other possible operating systems, and the embodiment of the present application is not specifically limited.

[0105] The identification device of the smart surface device according to the embodiment of the present application can realize each process realized by the first communication device in the method embodiments of Figures 2 to 8, and achieve the same technical effects, and will not be described further here in order to avoid repetition of description.

[0106] FIG. 10 shows a structural schematic diagram of a signal reflecting device according to an embodiment of the present application, the device 1000 is used in a smart surface device. As shown in FIG. 10, the device 1000 mainly includes a receiving module 1001 and a reflecting module 1002.

[0107] In an embodiment of the present application, the receiving module 1001 is used for receiving a first signal transmitted by a first communication device, and the reflecting module 1002 is used for reflecting the first signal in a specific reflection mode and transmitting an echo signal of the first signal.

[0108] In one possible implementation, the first signal is A sensing signal for realizing a sensing function; A communication signal for transmitting information; and a communication-sensing integrated signal for implementing the sensing function and transmitting information.

[0109] In one possible implementation, the receiving module 1001 further comprises: Before the reflection module 1002 reflects the first signal in a specific reflection mode, a first trigger signal transmitted by the first communication device is received and used to set the reflection mode of the smart surface device to the specific reflection mode.

[0110] In one possible implementation, the device comprises: The smart surface device further includes a setting module for setting a reflection mode of the smart surface to the particular reflection mode, which is a default reflection mode of the smart surface device, in the absence of a signal forwarding behavior.

[0111] In one possible implementation manner, the receiving module 1001 is further used to receive first instruction information sent by the first communication device instructing the device to terminate the specific reflection mode, and the setting module is further used to stop using the specific reflection mode in accordance with the instruction of the first instruction information.

[0112] In one possible implementation, the reflection module 1002 reflects the first signal in a specific reflection mode. Based on a control command included in the first signal, reflecting the first signal using a reflection mode corresponding to the control command, where an angle at which the smart surface device reflects the first signal is at least one angle associated with the control command in a preset set of beam transfer angles.

[0113] In one possible implementation, the device comprises: The device further includes a determination module for determining identity-indicating information contained in the first signal before reflecting the first signal, and for determining that the identity of the first communication device indicated by the identity-indicating information is valid.

[0114] In one possible implementation, the particular reflection mode is: a first reflective mode in which the smart surface device reflects the received signal using angles in a preset set of beam transfer angles; or The smart surface device includes a second reflective mode in which the smart surface device reflects the received signal using an angle corresponding to the direction of arrival of the wave.

[0115] In one possible implementation, the reflection module 1002 reflects the first signal in a specific reflection mode. obtaining a direction of arrival of the first signal and reflecting the first signal using an angle corresponding to the direction of arrival; performing a traverse reflection on one of the received first signals based on each angle in the set of beam transfer angles; and reflecting the received at least one first signal using an angle in the set of beam transfer angles.

[0116] In one possible implementation, the reflection module 1002 reflects the first signal in a specific reflection mode. Reflecting by altering characteristic information of the first signal according to a first rule, where the characteristic information includes at least one of amplitude, phase, polarization, and orbital angular momentum information.

[0117] The signal reflecting device according to the embodiments of the present application can realize each process realized by the smart surface equipment in the method embodiments of Figures 2 to 8 and achieve the same technical effects, and will not be further described here in order to avoid repetition of description.

[0118] Optionally, as shown in FIG. 11, the embodiment of the present application further provides a communication device 1100, including a processor 1101, a memory 1102, and a program or instruction stored in the memory 1102 and capable of running on the processor 1101, for example, when the communication device 1100 is a first communication device, when the program or instruction is executed by the processor 1101, each process of the embodiment of the smart surface device identification method can be realized, and the same technical effect can be achieved. When the communication device 1100 is a smart surface device, when the program or instruction is executed by the processor 1101, each process of the embodiment of the signal reflection method can be realized, and the same technical effect can be achieved. In order to avoid repetition, no further description will be given here.

[0119] The embodiment of the present application further provides a terminal, which includes a processor and a communication interface, the processor is used to realize each process of the embodiment of the smart surface device identification method, and the communication interface is used to communicate with an external communication device. This embodiment of the terminal corresponds to the embodiment of the method on the first communication device side, and each implementation process and realization manner of the embodiment of the method can be applied to the embodiment of the terminal, and the same technical effects can be achieved. Specifically, FIG. 12 is a schematic diagram of the hardware structure for realizing the terminal of the embodiment of the present application.

[0120] The terminal 1200 includes components such as, but not limited to, a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, and a processor 1210.

[0121] As can be understood by those skilled in the art, the terminal 1200 may further include a power source (e.g., a battery) for powering each component, and the power source may be logically connected to the processor 1210 by a power management system, so that the power management system can realize functions such as charge / discharge management and power consumption management. The terminal structure shown in FIG. 12 does not constitute a limitation on the terminal, and the terminal may include more or less components than the number of components shown, or a combination of some components, or a different arrangement of components, and will not be further described here.

[0122] It should be understood that in the embodiment of the present application, the input unit 1204 may include a graphics processor (Graphics Processing Unit, GPU) 12041 and a microphone 12042, and the graphics processor 12041 processes image data of still or video images obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. The other input devices 12072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, and an operation lever, which will not be described further herein.

[0123] In the embodiment of the present application, the radio frequency unit 1201 receives downlink data from the network side device, and then causes the processor 1210 to process the data, and transmits uplink data to the network side device. In general, the radio frequency unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0124] The memory 1209 may be used to store software programs or instructions and various data. The memory 1209 may mainly include a program or instruction storage area and a data storage area, where the program or instruction storage area can store an operating system, an application program or instruction required for at least one function (e.g., a sound playback function, an image playback function, etc.), etc. The memory 1209 may include a high-speed random access memory, and may further include a non-transitory memory, where the non-transitory memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory, for example, at least one magnetic disk memory device, a flash memory device, or other non-transitory solid-state memory device.

[0125] The processor 1210 may include one or more processing units. Optionally, the processor 1210 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. As can be understood, the modem processor does not have to be integrated into the processor 1210.

[0126] Wherein, the radio frequency unit 1201 is used to transmit a first signal, The processor 1210 is used to obtain identification information associated with the smart surface device, where the identification information is information obtained by the terminal by detecting an echo signal of the first signal, or information obtained by a second communication device by detecting an echo signal of the first signal and forwarded to the terminal.

[0127] In an embodiment of the present application, a terminal transmits a first signal, a smart surface device receives and reflects an echo signal of the first signal, and by detecting the echo signal by the terminal or a second communication device, identification information associated with the smart surface device can be obtained, thereby enabling the smart surface device to be identified if the smart surface device is unknown.

[0128] Optionally, the radio frequency unit 1201 is further used to transmit a first trigger signal to trigger the smart surface device to use a specific reflective mode.

[0129] Optionally, the radio frequency unit 1201 is further used to send first instruction information to the smart surface device after the first communication device obtains the identification information, where the first instruction information instructs the smart surface device to exit a specific reflection mode which is the default reflection mode of the smart surface device.

[0130] Optionally, the processor 1210 is further used to determine a second duration for monitoring the echo signal based on a maximum detection distance and / or a first duration for transmitting a single said first signal, and to monitor the echo signal within said second duration.

[0131] Optionally, the processor 1210 is further used to monitor an echo signal of the first signal after transmitting the first signal, and determine whether a smart surface device is present in the launch angle and / or beam direction of the first signal based on the strength of the monitored echo signal.

[0132] Optionally, the processor 1210 is further used to detect characteristic information of the echo signal and identify the identity of the smart surface device based on the detection result, where the characteristic information includes at least one of width, phase, polarization, and orbital angular momentum information.

[0133] Optionally, the radio frequency unit 1201 further comprises: sending second instruction information to the second communication device, the second instruction information including at least one of an instruction to activate echo monitoring and a format of the first signal; Receiving the identification information transmitted by the second communication device, the identification information being obtained by the second communication device by monitoring and processing an echo signal of the first signal, and the identification information including third indication information for indicating whether a smart surface device is present in the emission angle and / or beam direction of the first signal.

[0134] An embodiment of the present application further provides a network side device, including a processor and a communication interface, the processor is used to realize the embodiment of the above-mentioned smart surface device identification method, and the communication interface is used to communicate with an external communication device. This embodiment of the network side device corresponds to the embodiment of the above-mentioned first communication device-side method, and each implementation process and realization manner of the above-mentioned method embodiment can be applied to this embodiment of the network side device, and the same technical effects can be achieved.

[0135] Specifically, the embodiment of the present application further provides a network side device. As shown in FIG. 13, the network sideThe device 1300 includes an antenna 1301, a radio frequency device 1302, and a baseband device 1303. The antenna 1301 and the radio frequency device 1302 are connected. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and transmits the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be transmitted and transmits it to the radio frequency device 1302, and the radio frequency device 1302 transmits the received information through the antenna 1301 after processing it.

[0136] The above frequency band processing device may be located in a baseband device 1303, and the method performed by the network side equipment in the above embodiments may be implemented in the baseband device 1303, which includes a processor 1304 and a memory 1305.

[0137] The baseband device 1303 may include, for example, at least one baseband board, on which multiple chips are installed, and as shown in FIG. 13, one of the chips is, for example, a processor 1304, which is connected to a memory 1305, and calls the program in the memory 1305 to perform the network equipment operations shown in the above method embodiments.

[0138] The baseband device 1303 may further include a network interface 1306, which is used to exchange information with the radio frequency device 1302, and this interface is, for example, a common public radio interface (abbreviated as CPRI).

[0139] Specifically, the network side equipment of the embodiment of the present invention further includes instructions or programs stored in memory 1305 and capable of running on processor 1304, and processor 1304 can call the instructions or programs in memory 1305 to execute the method performed by each module shown in FIG. 9 and achieve the same technical effect, which will not be described further here in order to avoid repetition.

[0140] An embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored, the program or instruction being executed by a processor to execute the above-mentioned smart surface device. identification Each process of the method embodiment or each process of the signal reflection method embodiment can be implemented to achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0141] Here, the processor is the processor in the communication device described in the above embodiment. The readable storage medium includes 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.

[0142] An embodiment of the present application further provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor running a program or instruction, and the chip being configured to: identification It can be used to realize each process of the method embodiment or to realize each process of the above signal reflection method embodiment, and achieve the same technical effect. In order to avoid repetition, it will not be described further here.

[0143] It should be understood that the chips referred to in the embodiments of the present application may be referred to as system level chips, system chips, chip systems, or systems on chips.

[0144] An embodiment of the present application further provides a computer program / program product, the computer program / program product being stored in a non-transitory storage medium, the program / program product being executed by at least one processor to control the smart surface device. identification Each process of the method embodiment or each process of the signal reflection method embodiment can be implemented to achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0145] It should be explained that in this specification, the terms "comprise", "include", or any other variants thereof are intended to cover the non-exclusive "comprise", whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, method, article, or apparatus. In the absence of further limitations, an element limited by the phrase "comprises a" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes this element. It should be pointed out that the scope of the method and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions in an essentially simultaneous manner or in reverse order based on the functions involved, for example, the described method can be performed in a different order than described, and various steps can be added, omitted, or combined. Also, features described with reference to some examples can be combined in other examples.

[0146] From the above description of the embodiments, it is clear to those skilled in the art that the methods of the above embodiments can be realized in the form of software and a necessary general-purpose hardware platform. Of course, they can also be realized in hardware, but in many cases the former is a more preferred embodiment. In light of this understanding, the technical proposal of the present application may be substantially embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes some instructions for causing a communication device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present application.

[0147] The above describes the embodiments of the present application in conjunction with the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not limiting. Those skilled in the art can take the suggestions of this application and make many forms without departing from the spirit and scope of the claims of this application, all of which belong to the protection scope of this application.

Claims

1. A method for identifying a smart surface device, comprising: a first communication device transmitting a first signal; The first communication device acquires identification information associated with the smart surface device, the identification information being information acquired by the first communication device by detecting an echo signal of the first signal, or information acquired by a second communication device by detecting an echo signal of the first signal and forwarded to the first communication device; The method comprises: The method of identifying a smart surface device further includes the first communication device transmitting a first trigger signal for triggering the smart surface device to use a particular reflective mode.

2. The first signal is A sensing signal for realizing a sensing function; A communication signal for transmitting information; 10. The method of claim 1, further comprising one of: a communicating, sensing, and integrated signal for implementing a sensing function and transmitting information.

3. The method of claim 1 , wherein the first signal includes a control command for controlling a reflective mode in which the smart surface device reflects the first signal.

4. The method of claim 3 , wherein the control command relates to at least one angle in a set of beam transfer angles preset by the smart surface device.

5. After the first communication device has obtained identification information, the method further comprises: The method of claim 1 , further comprising the first communication device sending first instruction information to the smart surface device, wherein the first instruction information instructs the smart surface device to exit a particular reflection mode that is a default reflection mode of the smart surface device.

6. The method of claim 1 , wherein the first signal includes identity indication information for indicating an identity of the first communication device.

7. The specific reflection mode is a first reflective mode in which the smart surface device reflects the received signal using angles in a preset set of beam transfer angles; or The method of claim 1 , wherein the smart surface device includes a second reflective mode in which the smart surface device reflects the received signal using an angle corresponding to the direction of arrival of the wave.

8. The first communication device or the second communication device monitoring an echo signal of the first signal includes: determining a second duration for monitoring the echo signal based on a maximum detection distance and / or a first duration for which the first communication device or the second communication device transmits a single first signal; and monitoring the echo signal during the second duration.

9. when the smart surface device uses a first reflective mode and one of the first signals corresponds to each angle of the set of beam transfer angles, a first duration for which the first communication device transmits the single first signal is at least greater than a total mode switching time required for the smart surface device to traverse each angle in the set of beam transfer angles; Or, 8. The method of claim 7, wherein when the smart surface device uses a first reflection mode and one of the first signals corresponds to an angle of the beam transfer angle set, the number of the first signals transmitted by the first communication device using the same angle and / or the same beam direction is at least greater than the number of angles in the beam transfer angle set, and a start time of the next first signal transmitted by the first communication device using the same angle and / or the same beam direction is later than an end time of echo monitoring of the previous first signal.

10. The first communication device acquiring the identification information, The first communication device transmits second instruction information to the second communication device, the second instruction information including at least one of an instruction to activate echo monitoring and a format of the first signal; 2. The method of claim 1, comprising: the first communication device receiving the identification information transmitted by the second communication device, the identification information being obtained by the second communication device by monitoring and analyzing an echo signal of the first signal, and the identification information including third indication information for indicating whether a smart surface device is present in an emission angle and / or beam direction of the first signal.

11. 1. A method for signal reflection, comprising: receiving a first signal transmitted by a first communication device at the smart surface device; and the smart surface device reflecting the first signal in a specific reflection mode to transmit an echo signal of the first signal; Before the smart surface device reflects the first signal in a particular reflection mode, the method includes: The signal reflection method further includes the smart surface device receiving a first trigger signal transmitted by the first communication device and setting a reflection mode of the smart surface device to the particular reflection mode.

12. 11. A communications device comprising a processor, a memory, and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, implementing steps of a method for identifying a smart surface device according to any one of claims 1 to 10.

13. 12. A smart surface device comprising a processor, a memory, and a program or instructions stored in the memory and operable on the processor, the program or instructions, when executed by the processor, implementing the steps of the signal reflection method of claim 11.

14. A readable storage medium having a program or instructions stored thereon, which, when executed by a processor, performs steps of the smart surface device identification method of any one of claims 1 to 10 or performs steps of the signal reflection method of claim 11.

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