Information transmission method and device based on smart reflective surface and related equipment

Abstract

The present disclosure provides a kind of information transmission method based on intelligent reflecting surface, it is related to communication technical field, the method is executed by intelligent reflecting surface, comprising: activating target reflecting unit to receive the radio frequency signal sent by sending end;According to the target reflecting unit, determine the index corresponding to it;The radio frequency signal is modulated with the index of the target reflecting unit to generate a reflected signal;And the reflected signal is sent to receiving end.The present disclosure method realizes the passive information transmission of intelligent reflecting surface without occupying additional time / frequency domain resources and increasing hardware cost and energy consumption, so as to realize the efficient communication of whole system.Further, the technical scheme proposed in the present patent is mainly the improvement of RIS technology, which will not affect the implementation complexity of sending end and receiving end.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication technology, and in particular, to an information transmission method and device based on an intelligent reflecting surface, a receiving end communication device, a sending end communication device, a computer readable storage medium, and an electronic device. BACKGROUND

[0002] Intelligent reflection surface (RIS or IRS) technology is a cross-border innovation combining artificial electromagnetic super material and modern mobile communication technology. The technology uses programmable new sub-wavelength two-dimensional super material to actively and intelligently control electromagnetic waves through digital coding, and realizes beamforming of electromagnetic waves by configuring different phase bias parameters between different array elements. It is considered as one of the candidate key technologies of 6G, and is expected to become an important infrastructure of future mobile communication networks.

[0003] To realize the deployment and application of intelligent reflecting surface in actual communication systems, the intelligent reflecting surface also needs to have certain information transmission capability, because the intelligent reflecting surface has the demand of information transmission in many aspects, such as transmitting the control signaling of the system and the state information of the intelligent reflecting surface. Directly configuring an additional radio frequency link to transmit the information of the intelligent reflecting surface is not an ideal way, mainly because the intelligent reflecting surface has two design constraints. First, the low-cost requirement of the intelligent reflecting surface. The intelligent reflecting surface is considered as a low-cost device that can be deployed in large quantities. Configuring a special radio frequency link on the intelligent reflecting surface to transmit its information will increase the hardware cost of the intelligent reflecting surface, which is not consistent with its original design. Second, the low-power requirement of the intelligent reflecting surface. The intelligent reflecting surface is considered as a nearly passive device, and its information transmission is expected to be carried out in a low-energy or energy-free manner. When transmitting information through a radio frequency link, a large amount of energy needs to be consumed, which will cause the energy supply problem of the intelligent reflecting surface.

[0004] Therefore, how to realize efficient communication without increasing the hardware cost and energy consumption of the intelligent reflecting surface is a technical problem that needs to be solved in the communication field.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The disclosure aims to provide an intelligent reflecting surface-based information transmission method and device, a receiving end communication device, a sending end communication device, a computer readable storage medium and an electronic device to at least solve the technical problem of how to achieve efficient communication without increasing the hardware cost and energy consumption of the intelligent reflecting surface in the related art.

[0007] Other characteristics and advantages of the disclosure will become apparent from the following detailed description, or will be learned by practice of the disclosure.

[0008] The technical solutions of the disclosure are as follows:

[0009] According to one aspect of the disclosure, an intelligent reflecting surface-based information transmission method is provided, which is performed by an intelligent reflecting surface and includes: activating a target reflecting unit to receive a radio frequency signal sent by a sending end; determining a corresponding index according to the target reflecting unit; generating a reflected signal by spatially modulating the radio frequency signal and the index of the target reflecting unit; and sending the reflected signal to a receiving end.

[0010] In some embodiments of the disclosure, the method further includes configuring the index according to the activation state ON / OFF of each reflecting unit at the sending end and the receiving end.

[0011] In some embodiments of the disclosure, after the step of activating the transmitting unit to receive the radio frequency signal sent by the sending end, the method further includes adjusting the reflection phase of the target reflecting unit to achieve passive beamforming.

[0012] According to one aspect of the disclosure, an intelligent reflecting surface-based information transmission method is provided, which is performed by a receiving end and includes: receiving a strengthened signal, wherein the strengthened signal includes a radio frequency signal sent by a sending end and a reflected signal sent by an intelligent reflecting surface, and the reflected signal is formed by spatially modulating the radio frequency signal sent by the sending end and the index of the activated target reflecting unit according to the intelligent reflecting surface.

[0013] In some embodiments of the disclosure, after the step of receiving the strengthened signal, the method further includes obtaining the radio frequency signal sent by the sending end according to the strengthened signal; and iteratively recovering the reflected signal according to the radio frequency signal.

[0014] According to one aspect of the disclosure, an intelligent reflecting surface-based information transmission method is provided, which is performed by a sending end and includes: sending a radio frequency signal to an intelligent reflecting surface RIS to make the RIS activate a target reflecting unit to receive the radio frequency signal; determining a corresponding index according to the target reflecting unit; and generating a reflected signal by spatially modulating the radio frequency signal and the index of the target reflecting unit, and sending the reflected signal to a receiving end.

[0015] In some embodiments of the present disclosure, the method can further include simultaneously transmitting the radio frequency signal to the receiving end.

[0016] According to yet another aspect of the present disclosure, an information transmission system based on a smart reflecting surface is provided, which includes a smart reflecting surface RIS and a receiving end: a target reflecting unit is activated by the RIS to receive a radio frequency signal transmitted by a transmitting end; an index corresponding to the target reflecting unit is determined; a reflection signal is generated by spatially modulating the radio frequency signal with the index of the target reflecting unit; and the reflection signal is transmitted to the receiving end; and the receiving end receives an enhanced signal, wherein the enhanced signal includes the radio frequency signal transmitted by the transmitting end and the reflection signal transmitted by the smart reflecting surface.

[0017] According to yet another aspect of the present disclosure, an information transmission device based on a smart reflecting surface is provided, which includes: a first signal receiving module configured to activate a target reflecting unit to receive a radio frequency signal transmitted by a transmitting end; an index determining module configured to determine an index corresponding to the target reflecting unit; and a modulation module configured to generate a reflection signal by spatially modulating the radio frequency signal with the index of the target reflecting unit; and a first signal transmitting module configured to transmit the reflection signal to a receiving end.

[0018] According to yet another aspect of the present disclosure, a receiving end communication device is provided, which includes: a second signal receiving module configured to receive an enhanced signal, wherein the enhanced signal includes a radio frequency signal transmitted by a transmitting end and a reflection signal transmitted by a smart reflecting surface, and the reflection signal is formed by spatially modulating the radio frequency signal transmitted by the transmitting end and an index of an activated target reflecting unit by the smart reflecting surface.

[0019] According to yet another aspect of the present disclosure, a transmitting end communication device is provided, which includes: a second signal transmitting module configured to transmit a radio frequency signal to a smart reflecting surface RIS, so that the RIS activates a target reflecting unit to receive the radio frequency signal; an index corresponding to the target reflecting unit is determined; and a reflection signal is generated by spatially modulating the radio frequency signal with the index of the target reflecting unit and transmitted to a receiving end.

[0020] According to yet another aspect of the present disclosure, an electronic device is provided, which includes: a processor; and a memory configured to store executable instructions of the processor; wherein the processor is configured to execute the above-mentioned information transmission method based on a smart reflecting surface by executing the executable instructions.

[0021] According to yet another aspect of the present disclosure, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to implement the above-mentioned information transmission method based on a smart reflecting surface.

[0022] The method of the present disclosure enables the smart reflecting surface to utilize the radio frequency signal sent by the sending end to complete the modulation of its information. At this time, the RIS reflecting surface will need to embed the information to be informed to the receiving end in the principle of activating the reflecting unit, and transmit the information through the index of the activated unit without the need for radio frequency link. The passive information transmission of the smart reflecting surface is realized without occupying additional time / frequency domain resources and increasing hardware cost and energy consumption, thereby realizing efficient communication of the entire system.

[0023] Further, the technical solution of the present patent is mainly an improvement on the RIS technology, which does not affect the implementation complexity of the sending end and the receiving end.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. It is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0026] Figure 1 A scene schematic diagram of a wireless communication system to which the embodiments of the present disclosure are applied is shown.

[0027] Figure 2 A flowchart of a smart reflecting surface-based information transmission method performed by a smart reflecting surface in an embodiment of the present disclosure is shown.

[0028] Figure 3 A flowchart of a smart reflecting surface-based information transmission method performed by a receiving end in an embodiment of the present disclosure is shown.

[0029] Figure 4 A flowchart of a smart reflecting surface-based information transmission method performed by a sending end in an embodiment of the present disclosure is shown.

[0030] Figure 5 A flowchart of a smart reflecting surface-based information transmission system in an embodiment of the present disclosure is shown.

[0031] Figure 6 A schematic diagram of a smart reflecting surface-based information transmission device in an embodiment of the present disclosure is shown.

[0032] Figure 7 A schematic block diagram of a receiving end communication device in an embodiment of the present disclosure is shown.

[0033] Figure 8 FIG. 1 shows a schematic block diagram of a transmitting end communication device according to an embodiment of the present disclosure.

[0034] Figure 9 FIG. 1 shows a schematic block diagram of a transmitting end communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art. Like reference numerals may be used to refer to like elements throughout. The terminology used herein should not be interpreted to be limiting in any manner.

[0036] In addition, the accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments and, as such, should not be considered limiting in any way. Of the drawings: like reference numerals indicate corresponding or like parts throughout the several views. Some of the blocks in the drawings are functional blocks that represent functions implemented by a processor, software, or combination thereof. The functional blocks may be implemented in hardware, software, or a combination thereof.

[0037] In addition, the terms "first", "second", etc., are used herein only to describe different instances, and cannot be understood as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second", etc., can explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0038] To address the technical problems existing in the related art described above, embodiments of the present disclosure provide a Reflection Intelligence Surface (RIS) or Intelligence Reflection Surface (IRS) based on at least one or all of the technical problems described above.

[0039] Figure 1 FIG. 1 shows a schematic block diagram of a transmitting end communication device according to an embodiment of the present disclosure. Figure 1 The communication system can include a plurality of communication devices, such as a base station (BS) 110, a terminal device 120, and an intelligent reflecting surface RIS 130 in FIG. 1.

[0040] The base station 110 can also be referred to as a NodeB. The base station in the communication system provided by the embodiments of the present application can be any base station, such as a long term evolution (LTE) base station (also referred to as an eNB), a base station of a continued evolution of a NodeB in a 5th generation (5G) new radio (NR) system (also referred to as a gNB), a 6th generation (6G) base station, or a base station of a future communication standard, etc. The UE can be any UE, such as a vehicle-mounted UE, a portable UE, a handheld UE, an aircraft, etc.

[0041] In some embodiments of the present disclosure, the base station 110 can also be referred to as a network device. The network device can be a device supporting wired access or a device supporting wireless access. For example, the network device can be an access network (AN) / radio access network (RAN) device, which is composed of multiple AN / RAN nodes. The AN / RAN node can be an access point (AP), a base station (NodeB, NB), an enhanced base station (enhanced NodeB, eNB), a next-generation base station (such as a base station in NR: gNB), a transmission reception point (TRP), a transmission point (TP), or some other access node, etc.

[0042] In some embodiments of the present disclosure, the terminal device 120 can be referred to as a terminal or a user equipment (UE) or a mobile station (MS) or a mobile terminal (MT) or the like, and can refer to a device that provides voice and / or data connectivity to a user. For example, the terminal device can be a mobile phone, a drone, a tablet computer, or a computer with wireless transceiver functions, or a handheld device with wireless connection functions, a vehicle-mounted device, and the like. The terminal device can also be a palmtop computer, a mobile internet device (MID), a wearable device, an enhanced mobile broadband (eMBB) terminal, an ultra-reliable low-latency communication (URLLC) terminal, a machine type communication (MTC) terminal, a narrow band internet of things (NB-IoT) terminal, a customer premise equipment (CPE) terminal, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a vehicle to everything (V2X) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in smart power grids, a wireless terminal in transportation safety, a wireless terminal in smart cities, a wireless terminal in smart homes, a sensor, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a computing device or other processing device connected to a wireless modem, a vehicle-mounted terminal, a vehicle with vehicle to vehicle (V2V) communication capability, a drone with drone to drone communication capability, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN), and the like, without limitation.

[0043] Among them, the wearable device can also be called a wearable smart device, which is a general term for devices that can be worn, such as glasses, gloves, watches, clothing, and shoes, which are designed and developed by applying wearable technology to daily wear. The wearable device is a portable device that can be directly worn on the body or integrated into the user's clothes or accessories. The wearable device is not only a hardware device, but also a powerful function achieved through software support and data interaction, cloud interaction. The general wearable smart device includes functions, large size, and can not depend on a smart phone to achieve complete or partial functions, such as smart watches or smart glasses, and only focuses on a certain application function, and needs to cooperate with other devices such as a smart phone, such as various smart bracelets, smart jewelry, and other devices for monitoring vital signs.

[0044] In addition, the terminal device 120 can also be a terminal device in an internet of things (IoT) system. IoT is an important part of future information technology development, and its main technical feature is to connect objects through communication technology and network to realize human-machine interconnection and intelligent network of object-to-object interconnection. IoT technology can achieve mass connection, deep coverage, and terminal power saving through, for example, narrowband (NB) technology.

[0045] In addition, the terminal device 120 can also include a smart printer, a train detector, a gas station sensor, and the like, and the main functions include collecting data, receiving control information and downlink data of a network device, and transmitting electromagnetic waves to transmit uplink data to the network device.

[0046] The communication devices in the communication system can transmit signals to each other, such as Figure 1 The base station 110 and the terminal device 120 in the communication system can transmit signals to each other through an air interface.

[0047] For example, the base station 110 in the communication system can use a large-scale antenna technology to communicate with the terminal device 120. The large-scale antenna technology, also known as massive MIMO technology, can also be called three-dimensional (3D) MIMO technology or full-dimensional MIMO technology. Compared with the traditional MIMO technology, the large-scale antenna technology can provide more antennas and more data transmission channels. The application of the large-scale antenna technology enables the base station 110 to serve more terminal devices 120 on limited time-frequency resources, and provides more arrival paths between the base station 110 and the terminal device 120, thereby improving the reliability of the transmission signal between the base station 110 and the terminal device 120. However, the wide application of the large-scale antenna technology also has the problems of high cost and high power consumption.

[0048] To alleviate the high cost and high power consumption problem brought by massive antenna technology, in addition, to change the channel situation of the base station 110 and the terminal device 120, a reflecting intelligent surface (RIS) can be introduced in the communication system (such as 130 in FIG. 1), which is located between at least one group of communication devices. The RIS can be a device containing a large number of passive low-cost devices, which has the advantages of low cost and low power consumption, and the RIS 130 can reflect the signals transmitted by the communication devices between the communication devices to assist the signal transmission between the communication devices, such as the RIS 130 can change the channel between the base station 110 and the terminal device 120, thereby improving the reliability of the signal transmission between the communication devices. Figure 1

[0049] In some embodiments of the present disclosure, the reflecting intelligent surface RIS 130 further includes a controller for adjusting the "on / off" state of the reflecting unit of the reflecting intelligent surface according to the information of the reflecting intelligent surface, so as to embed the information of the reflecting intelligent surface in the index of the reflecting unit of the reflecting intelligent surface, and transmit the information to the receiving end (receiving end communication device) through the reflected electromagnetic wave. As shown in FIG. 1, 1 represents the on state, and 0 represents the off state, so the index of the reflecting unit is 1010101. Then the receiving end (receiving end communication device) obtains the information of the reflecting intelligent surface by detecting whether the corresponding reflecting intelligent surface unit is activated (turned on). Figure 1

[0050] Those skilled in the art should understand that the controller can be integrated in the reflecting intelligent surface RIS 130, or can be independent of the reflecting intelligent surface RIS 130. In some embodiments, the control mode of the controller can be through wired connection, IP routing, wireless connection and autonomous perception, etc.

[0051] Those skilled in the art should understand that the receiving end (receiving end communication device) and the sending end (sending end communication device) are relative. In the uplink, the receiving end (receiving end communication device) is the base station 110, and the sending end (receiving end communication device) is the user terminal 120. In the downlink, the sending end (sending end communication device) is the base station 110, and the receiving end (receiving end communication device) is the user terminal 120.

[0052] It should be pointed out that the nouns or terms involved in the embodiments of the present application can be mutually referred to, and will not be described again.

[0053] In the following, the various steps of the data transmission method based on the reflecting intelligent surface in the present example embodiment will be described in more detail in conjunction with the drawings and embodiments.

[0054] ​​Figure 2 A flowchart of a data transmission method based on an intelligent reflecting surface is shown. The method provided by the embodiment of the present disclosure can be applied to Figure 1 The RIS 130 or the controller of the RIS 130 is shown.

[0055] As shown in Figure 2 The method 200 can include the following steps:

[0056] In step S210, the target reflecting unit is activated to receive the radio frequency signal sent by the sending end.

[0057] The sending end (sending end communication device) can be a base station or a user terminal in Figure 1 In the uplink, the sending end is a user terminal. In the downlink, the sending end is a base station.

[0058] The target reflecting unit can be one or more.

[0059] In step S220, the corresponding index is determined according to the target reflecting unit.

[0060] The index is in a one-to-one correspondence with the activated target reflecting unit or units.

[0061] In step S230, the radio frequency signal is spatially modulated with the index of the target reflecting unit to generate a reflected signal, which is sent to the receiving end.

[0062] The spatial modulation is to modulate the radio frequency signal with the index of the target reflecting unit.

[0063] In step S240, the reflected signal is sent to the receiving end.

[0064] The receiving end (receiving end communication device) can be a base station or a user terminal in Figure 1 In the uplink, the receiving end is a base station. In the downlink, the receiving end is a user terminal.

[0065] The receiving end can demodulate the radio frequency signal with the index.

[0066] The method of the present disclosure enables the intelligent reflecting surface to naturally use the radio frequency signal sent by the sending end to complete the modulation of its information. At this time, the RIS reflecting surface will embed the information to be informed to the receiving end in the principle of activating the reflecting unit, and transmit the information through the index of the activated unit without using the radio frequency link. The passive information transmission of the intelligent reflecting surface is achieved without occupying additional time / frequency domain resources and without increasing hardware cost and energy consumption, and efficient communication of the entire system is achieved.

[0067] Further, the technical solution provided by the patent is mainly an improvement on the RIS technology, which does not affect the implementation complexity of the sending end and the receiving end.

[0068] In some embodiments of the present disclosure, the sending end and the receiving end configure the index according to the activation state ON / OFF of each reflecting element.

[0069] The index is a sequence or matrix composed of 0 or 1, which is used to represent the activation state of each reflecting element. The activated target reflecting element is in an open state, represented by 1. The unactivated reflecting element is in a closed state, represented by 0. Then the target reflecting element in step S210 is the activated reflecting element, represented by 1, and the activation state of other reflecting elements is represented by 0.

[0070] The index is generated according to the activation state ON / OFF of each reflecting element for modulating / demodulating the radio frequency signal, which provides great diversity gain for the communication between the sending end and the receiving end.

[0071] In some embodiments of the present disclosure, after step S210, the method can further include adjusting the reflection phase of the target reflecting element to realize passive beamforming. The intelligent reflecting surface still partially retains its passive beamforming capability while passively transmitting information, thereby further enhancing the performance of the system assisted by the intelligent reflecting surface.

[0072] Figure 3 A flowchart of an information transmission method based on an intelligent reflecting surface executed by a receiving end in an embodiment of the present disclosure is shown. As shown in Figure 3 The method 300 includes:

[0073] Receiving the enhanced signal, wherein the enhanced signal includes the radio frequency signal sent by the sending end and the reflected signal sent by the intelligent reflecting surface, and the reflected signal is formed by the intelligent reflecting surface according to the radio frequency signal sent by the sending end and the index of the activated target reflecting element.

[0074] By demodulating the information using the index of the reflected channel, the received information is realized without occupying additional time / frequency domain resources and without increasing hardware cost and energy consumption, thereby realizing efficient communication of the entire system.

[0075] In some embodiments of the present disclosure, the receiving end generally obtains the radio frequency signal and the reflected signal through a two-step solution method, i.e., the radio frequency signal can be obtained according to the enhanced signal first; and then the reflected signal is iteratively recovered according to the radio frequency signal.

[0076] Specifically, the enhanced signal Y can be represented by formula (1):

[0077] Y=(As+h d )x T +W=zxT +W Formula (1)

[0078] wherein A s is the channel between the certain reflection unit and the receiving end; h d is the channel between the sending end and the receiving end; X T is a set of transmitted signals when the certain reflection unit is activated; and W is noise.

[0079] Figure 4 A flowchart showing a method for transmitting information based on an intelligent reflecting surface performed by a sending end in an embodiment of the present disclosure is shown. As Figure 4 shown, the method 400 can include the following steps:

[0080] In step S310, a radio frequency signal is transmitted to an intelligent reflecting surface RIS to activate a target reflection unit of the RIS to receive the radio frequency signal; a corresponding index is determined according to the target reflection unit; and a reflection signal is generated after spatial modulation of the radio frequency signal and the index of the target reflection unit, and is transmitted to a receiving end.

[0081] Those skilled in the art should also understand that the sending end can also transmit a radio frequency signal to the receiving end at the same time. Spatial modulation on the intelligent reflecting surface does not change the waveform of the original signal, so the degree of interference with direct communication between the sending end and the receiving end is low, which is conducive to direct communication.

[0082] Those skilled in the art should understand that according to the principle of mutual exclusivity between the sending end and the receiving end, the sending end in the embodiment of the present disclosure can also have the ability to perform the method 300, and the receiving end can also have the ability to perform the method 400.

[0083] In some embodiments of the present disclosure, an information transmission system based on an intelligent reflecting surface is also included, which includes an intelligent reflecting surface RIS and a receiving end (a receiving end communication device): the target reflection unit is activated by the RIS to receive the radio frequency signal transmitted by the sending end; a corresponding index is determined according to the target reflection unit; a reflection signal is generated after spatial modulation of the radio frequency signal and the index of the target reflection unit; and the reflection signal is transmitted to the receiving end; the receiving end receives the enhanced signal, wherein the enhanced signal includes the radio frequency signal transmitted by the sending end and the reflection signal transmitted by the intelligent reflecting surface.

[0084] For example Figure 5 A flowchart showing an information transmission system based on an intelligent reflecting surface in an embodiment of the present disclosure is shown. As Figure 5 shown, the system 500 can include an RIS 510 and a receiving end 520. Among them, the RIS has N t transmitting units (antennas), and the receiving end has N r antennas.

[0085] In the information transmission process, at the RIS side, the serial bits received from the sending end are subjected to serial / parallel conversion, and then modulated signals i and s are obtained according to the reflection unit index and QAM / PSK modulation, respectively; the modulated signals i and s are jointly encoded to obtain a radio frequency signal x, which is sent to the receiving end;

[0086] At the receiving end, the radio frequency signal x reflected by the RIS is detected from the received radio frequency signal y, and then parallel / serial conversion is performed to obtain the recovered serial bits.

[0087] Figure 6 A schematic diagram of an information transmission device based on an intelligent reflecting surface in an embodiment of the present disclosure is shown. As shown in Figure 6 The information transmission device 600 based on an intelligent reflecting surface can include a first signal receiving module 610, an index determining module 620, a modulation module 630, and a first signal sending module 640. The first signal receiving module 610 is configured to activate a target reflection unit to receive a radio frequency signal sent by a sending end. The index determining module 620 is configured to determine a corresponding index according to the target reflection unit. The modulation module 630 is configured to generate a reflection signal by spatially modulating the radio frequency signal with the index of the target reflection unit. The first signal sending module 640 is configured to send the reflection signal to a receiving end.

[0088] In some embodiments of the present disclosure, the device further includes an index configuration module configured to configure the index according to the activation state ON / OFF of each reflection unit at the sending end and the receiving end.

[0089] In some embodiments of the present disclosure, the device further includes a reflection unit adjustment module configured to adjust the reflection phase of the target reflection unit to achieve passive beamforming.

[0090] Figure 7 A schematic block diagram of a receiving end communication device in an embodiment of the present disclosure is shown. As shown in Figure 7 The receiving end communication device 700 can include a second signal receiving module 710 configured to receive a strengthened signal, wherein the strengthened signal includes a radio frequency signal sent by a sending end and a reflection signal sent by an intelligent reflecting surface, the reflection signal being formed by spatially modulating the radio frequency signal sent by the sending end and the index of the activated target reflection unit by the intelligent reflecting surface.

[0091] In some embodiments of the present disclosure, the device further includes a signal recovery module configured to obtain the radio frequency signal sent by the sending end according to the strengthened signal; and iteratively recover the reflection signal according to the radio frequency signal.

[0092] Figure 8 A schematic block diagram of a sending end communication device in an embodiment of the present disclosure is shown. As shown in Figure 8As shown, the transmitting end communication device 800 may include a first signal transmitting module 810, which is used to transmit a radio frequency signal to the intelligent reflector RIS so that the RIS activates the target reflector unit to receive the radio frequency signal; determine the corresponding index according to the target reflector unit; and generate a reflected signal by spatially modulating the radio frequency signal and the index of the target reflector unit and transmitting it to the receiving end.

[0093] In some embodiments of this disclosure, radio frequency signals are transmitted to the receiving end.

[0094] Regarding the information transmission system 500 based on the intelligent reflective surface, the information transmission device 600 based on the intelligent reflective surface, the receiving end communication device 700, and the sending end communication device 800 in the above embodiments, the specific ways in which each part and module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0095] Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0096] The following reference Figure 9 To describe an electronic device 900 according to such an embodiment of the present disclosure. Figure 9 The electronic device 900 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0097] like Figure 9 As shown, the electronic device 900 is manifested in the form of a general-purpose computing device. The components of the electronic device 900 may include, but are not limited to: at least one processing unit 910, at least one storage unit 920, and a bus 930 connecting different system components (including the storage unit 920 and the processing unit 910).

[0098] The storage unit stores program code that can be executed by the processing unit 910, causing the processing unit 910 to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure. For example, the processing unit 910 can perform actions such as... Figure 2 The steps shown are as follows: S210, activating the target reflection unit to receive the radio frequency signal sent by the transmitter; S220, determining the corresponding index according to the target reflection unit; S230, spatially modulating the radio frequency signal with the index of the target reflection unit to generate a reflected signal; and S240, sending the reflected signal to the receiver.

[0099] Storage 920 can include a readable medium in the form of volatile memory, such as random access memory (RAM) 9201 and / or cache memory 9202, and can further include non-volatile memory, such as read only memory (ROM) 9203.

[0100] Storage 920 can also include program / utility 924 having one or more programs / modules 9205, such as an operating system, one or more application programs, other programs, and program data, each or any combination thereof, which may

[0101] Bus 930 can represent one or more of several types of bus structures, including a storage bus or bus controller, peripheral bus, graphics bus, processor or local bus using any of a variety of bus architectures.

[0102] Electronic device 900 can also communicate with one or more external devices such as a keyboard or a pointing device, through I / O interface 950 and / or with one or more devices that enable a user to interact with electronic device 900 and / or one or more devices that enable electronic device 900 to communicate with one or more other computing devices. Such communication can occur via I / O interface 950. Still yet, electronic device 900 can communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or the Internet) through network adapter 960. As an example, network adapter 960 can include a modem, a network card (wireless or wired), or other suitable device. As depicted, network adapter 960 communicates with the other components of electronic device 900 through bus 930. It should be appreciated that although not shown, other hardware and / or software components could be used in conjunction with electronic device 900. These include, but are not limited to, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0103] In the example embodiments of the present disclosure, a computer readable storage medium is also provided, on which a program product capable of implementing the method described in the specification is stored. In some possible implementations, various aspects of the present disclosure can also be implemented in the form of a program product, which includes program code for causing terminal equipment to perform the steps described in the "Example Method" section of the specification according to various example embodiments of the present disclosure when the program product is run on the terminal equipment.

[0104] A program product for implementing the above-described method according to the embodiments of the present disclosure can take a portable compact disc read-only memory (CD-ROM) and include a program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto, and in the present document, a readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, server, terminal, or device.

[0105] The program product can take any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium, for example, can be, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, server, terminal, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the readable storage medium include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0106] The computer readable signal medium can include a data signal propagated in baseband or propagated as a carrier wave in a propagated data signal, in which the readable program code is embodied. Such a propagated data signal can take through a variety of forms, including but not limited to electro-magnetic, optical, or any suitable combination thereof. The readable signal medium can also be any readable medium that is not a readable storage medium and that can transmit, propagate, or transport the program for use by or in connection with an instruction execution system, server, terminal, or device.

[0107] The program code contained on the readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, and the like, or any suitable combination thereof.

[0108] Program code for carrying out operations of the present disclosure can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. In the latter scenario, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computing device, such as through the Internet using an Internet Service Provider.

[0109] According to an aspect of the present disclosure, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided in various optional implementations of the embodiments described above.

[0110] It should be noted that, although several modules or units of the device for action execution are mentioned in the foregoing detailed description, such division is not mandatory. Indeed, according to an embodiment of the present disclosure, features and functionalities of two or more modules or units described above can be embodied in one module or unit. Conversely, features and functionalities of one module or unit described above can be further divided into multiple modules or units.

[0111] Moreover, although the various steps of the methods of the present disclosure are described in a particular order in the drawings, this is not required or implied, nor is it required that all of the illustrated steps be performed to achieve the desired result. Additionally or alternatively, certain steps can be omitted, multiple steps can be combined into one step, one step can be broken into multiple steps, etc.

[0112] Those skilled in the art can easily understand that the example embodiments described herein can be implemented by software, or by software in combination with necessary hardware, through the above description of the embodiments. Therefore, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash disk, a mobile hard disk, or the like) or a network, and includes a number of instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the methods according to the embodiments of the present disclosure.

[0113] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known use or custom in the art to which the present disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. An information transmission method based on smart reflective surfaces, characterized by, The method is performed by an intelligent reflecting surface, comprising: configuring indexes according to the activation state ON / OFF of each reflecting unit at the sending end and the receiving end; activating target reflecting units to receive radio frequency signals sent by the sending end; determining corresponding indexes according to the activated target reflecting units, wherein the indexes of the target reflecting units are used to transmit information of the intelligent reflecting surface; generating a reflected signal after spatial modulation of the radio frequency signals and the indexes of the target reflecting units; and sending the reflected signal to the receiving end. 2.The smart retroreflective surface-based information transmission method of claim 1, wherein, The indexes are a sequence or matrix composed of 0 or 1, used to represent the activation state of each reflecting unit. 3.The smart retroreflective surface based information transmission method of claim 2, wherein, After the step of activating the transmitting units to receive radio frequency signals sent by the sending end, the method further comprises: adjusting the reflection phase of the target reflecting units to achieve passive beamforming.

4. An information transmission method based on a smart reflecting surface, characterized in that, The method is performed by the receiving end, comprising: configuring indexes according to the activation state ON / OFF of each reflecting unit at the sending end and the receiving end; receiving an enhanced signal, wherein the enhanced signal comprises radio frequency signals sent by the sending end and reflected signals sent by the intelligent reflecting surface, the reflected signals being formed by spatial modulation of the radio frequency signals sent by the sending end and the indexes of the activated target reflecting units by the intelligent reflecting surface, wherein the indexes of the target reflecting units are used to transmit information of the intelligent reflecting surface.

5. The information transmission method based on the smart retroreflective surface according to claim 4, characterized in that, After the step of receiving the enhanced signal, the method further comprises: obtaining the radio frequency signals sent by the sending end according to the enhanced signal; iteratively recovering the reflected signals according to the radio frequency signals.

6. An information transmission method based on a smart reflecting surface, characterized in that, The method is performed by the sending end, comprising: configuring indexes according to the activation state ON / OFF of each reflecting unit; sending radio frequency signals to the intelligent reflecting surface RIS, so that the RIS activates target reflecting units to receive the radio frequency signals; determining corresponding indexes according to the target reflecting units, wherein the indexes of the target reflecting units are used to transmit information of the intelligent reflecting surface; and generating reflected signals after spatial modulation of the radio frequency signals and the indexes of the target reflecting units, and sending the reflected signals to the receiving end; simultaneously sending the radio frequency signals to the receiving end.

7. An intelligent surface-based information transfer system, characterized by The system comprises an intelligent reflecting surface RIS and a receiving end: configuring indexes according to the activation state ON / OFF of each reflecting unit at the receiving end; activating target reflecting units by the RIS to receive radio frequency signals sent by the sending end; determining corresponding indexes according to the activated target reflecting units, wherein the indexes of the target reflecting units are used to transmit information of the intelligent reflecting surface; generating reflected signals after spatial modulation of the radio frequency signals and the indexes of the target reflecting units; and sending the reflected signals to the receiving end; receiving an enhanced signal by the receiving end, wherein the enhanced signal comprises radio frequency signals sent by the sending end and the reflected signals sent by the intelligent reflecting surface.

8. An information transmission apparatus based on a smart reflecting surface, characterized by, The device comprises: a first signal receiving module for configuring indexes according to the activation state ON / OFF of each reflecting unit; and activating target reflecting units to receive radio frequency signals sent by the sending end; An index determining module is configured to determine a corresponding index according to the target reflecting element that is activated, wherein the index of the target reflecting element is used to transmit information of the intelligent reflecting surface; and A modulating module is configured to generate a reflection signal after spatially modulating the radio frequency signal with the index of the target reflecting element; and A first signal sending module is configured to send the reflection signal to a receiving end.

9. A receiving end communication device, characterized by, The device comprises: A second signal receiving module is configured to configure an index according to an activation state ON / OFF of each reflecting element; and receive a strengthened signal, wherein the strengthened signal comprises a radio frequency signal sent by a sending end and a reflection signal sent by an intelligent reflecting surface, the reflection signal is formed by spatially modulating the radio frequency signal sent by the sending end and the index of the target reflecting element that is activated according to the intelligent reflecting surface, wherein the index of the target reflecting element is used to transmit information of the intelligent reflecting surface.

10. A transmitting end communication device, characterized in that, The device comprises: A first signal sending module is configured to configure an index according to an activation state ON / OFF of each reflecting element; send a radio frequency signal to an intelligent reflecting surface RIS, so that the RIS activates a target reflecting element to receive the radio frequency signal; determine a corresponding index according to the target reflecting element, wherein the index of the target reflecting element is used to transmit information of the intelligent reflecting surface; and generate a reflection signal after spatially modulating the radio frequency signal with the index of the target reflecting element, and send the reflection signal to a receiving end.

11. An electronic device, comprising: It comprises: A processor; and A memory configured to store executable instructions of the processor; Wherein the processor is configured to execute the executable instructions to perform the information transmission method based on the intelligent reflecting surface according to any one of claims 1-6.

12. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the information transmission method based on the intelligent reflecting surface according to any one of claims 1-6.

Images