Electronic device, wireless communication method, and computer-readable storage medium

Abstract

The present disclosure relates to an electronic device, a wireless communication method, and a computer-readable storage medium. The electronic device according to the present disclosure includes a processing circuit, which is configured to: determine an interfering user according to multiple available passive signal reflection devices of a user device; determine a set of available beam pairs according to multiple available passive signal reflection devices of the user device; select an available beam pair from the set of available beam pairs according to the received signal quality of the user device and the received signal quality of the interfering user; and adjust the reflection directions of two available passive signal reflection devices to which two beams in the selected available beam pair belong to two beams, respectively. Using the electronic device, wireless communication method, and computer-readable storage medium according to the present disclosure, the reflection direction of the passive signal reflection device can be reasonably selected, so that the interference to other users in the cell is reduced on the basis of enhancing the communication quality.

Description

[0001] This application claims priority to a Chinese patent application filed with the Chinese Patent Office on February 18, 2020, with application number 202010100127.6 and invention name “Electronic device, wireless communication method and computer-readable storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present disclosure generally relate to the field of wireless communications, and more particularly to an electronic device, a wireless communication method, and a computer-readable storage medium. More particularly, the present disclosure relates to an electronic device as a network-side device in a wireless communication system, a wireless communication method performed by a network-side device in a wireless communication system, and a computer-readable storage medium. Background Art

[0003] Passive signal reflection devices adjust the amplitude and / or phase of incident signals and perform passive reflection by integrating a large number of low-energy, low-cost reflection elements on a plane, thereby reconstructing the wireless propagation environment. They can enhance communication quality and have good development prospects.

[0004] The passive signal reflection device needs to know the channel state information between it and the base station device / user equipment in order to provide performance gain for the wireless communication system. However, due to the hardware limitations of the passive signal reflection device, it does not have the ability to sense the channel. The equivalent channel of the indirect link between the user-passive signal reflection device-base station can be estimated based on the training signal received by the base station device. The number of reflection states of the passive signal reflection device is related to the number and accuracy of the reflection elements. As the number of reflection states increases, the complexity and overhead of estimating the equivalent channel increase.

[0005] Furthermore, since the passive signal reflection device does not have the ability to sense the channel, the traditional beamforming and beam tracking solutions based on channel state information are no longer applicable. In addition, although the passive signal reflection device can theoretically adjust the amplitude and / or phase of the incident signal, in the existing passive signal reflection device, only the phase adjustment can be achieved, and it is difficult to adjust the amplitude, which leads to a very serious interference problem between users in the cell.

[0006] Therefore, it is necessary to propose a technical solution to reasonably select the reflection direction of the passive signal reflection device, so as to reduce the interference to other users in the cell while enhancing the communication quality. Summary of the invention

[0007] This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.

[0008] The purpose of the present disclosure is to provide an electronic device, a wireless communication method and a computer-readable storage medium to reasonably select the reflection direction of a passive signal reflection device, thereby reducing interference to other users in a cell while enhancing communication quality.

[0009] According to one aspect of the present disclosure, an electronic device is provided, comprising a processing circuit, configured to: determine an interfering user based on multiple available passive signal reflection devices of a user device, wherein the interfering user is interfered with by at least one available passive signal reflection device; determine a set of available beam pairs based on the multiple available passive signal reflection devices of the user device, wherein the two beams in each available beam pair are respectively available beams of two available passive signal reflection devices; select an available beam pair from the set of available beam pairs based on the received signal quality of the user device and the received signal quality of the interfering user; and adjust the reflection directions of the two available passive signal reflection devices to which the two beams in the selected available beam pair belong to the two beams, respectively, so that the two available passive signal reflection devices respectively use the two beams to reflect the signal from the electronic device to the user device.

[0010] According to another aspect of the present disclosure, a wireless communication method is provided, including: determining an interfering user based on multiple available passive signal reflection devices of a user equipment, wherein the interfering user is interfered by at least one available passive signal reflection device; determining a set of available beam pairs based on the multiple available passive signal reflection devices of the user equipment, wherein the two beams in each available beam pair are respectively available beams of two available passive signal reflection devices; selecting an available beam pair from the set of available beam pairs based on the received signal quality of the user equipment and the received signal quality of the interfering user; and adjusting the reflection directions of the two available passive signal reflection devices to which the two beams in the selected available beam pair belong to the two beams, respectively, so that the two available passive signal reflection devices respectively use the two beams to reflect the signal from the electronic device to the user equipment.

[0011] According to another aspect of the present disclosure, a computer-readable storage medium is provided, comprising executable computer instructions, which, when executed by a computer, enable the computer to perform the wireless communication method according to the present disclosure.

[0012] According to another aspect of the present disclosure, a computer instruction is provided. When the executable computer instruction is executed by a computer, the computer performs the wireless communication method according to the present disclosure.

[0013] By using the electronic device, wireless communication method and computer-readable storage medium according to the present disclosure, a suitable beam pair can be selected from multiple available beam pairs according to the received signal quality of the user equipment and the received signal quality of the interfering user, so that the passive signal reflection device can use the selected beam pair to reflect the signal to the user equipment. In this way, the received signal quality of the user equipment can be enhanced, and the interference to the interfering user can be reduced.

[0014] Further areas of applicability will become apparent from the description provided herein.The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. In the drawings:

[0016] Figure 1 is a schematic diagram showing the working mode of the passive signal reflection device;

[0017] Figure 2 It is a schematic diagram showing the working mode of the passive signal reflection device when the direct link between the gNB (base station equipment in the 5G communication system) and the user is blocked;

[0018] Figure 3 is a schematic diagram showing the working mode of the passive signal reflection device when the user is located at the edge of the cell;

[0019] Figure 4 is a schematic diagram showing MIMO communication after a passive signal reflection device is introduced;

[0020] FIG5( a) is a schematic diagram showing the relationship between a received signal and a transmitted signal after the signal is reflected by a passive signal reflecting device;

[0021] FIG5( b) is a schematic diagram showing the relationship between a received signal and a transmitted signal after the signal is forwarded by an amplifying and forwarding relay;

[0022] Figure 6 is a schematic diagram showing a scenario in which a user is interfered with when a passive signal reflection device is used according to an embodiment of the present disclosure;

[0023] Figure 7 is a schematic diagram showing a scenario in which a user is interfered with when a passive signal reflection device is used according to another embodiment of the present disclosure;

[0024] Figure 8 is a block diagram showing an example of a configuration of an electronic device according to an embodiment of the present disclosure;

[0025] Fig. 9 is a schematic diagram illustrating a process of determining an available passive signal reflection device according to an embodiment of the present disclosure;

[0026] Fig.10 is a schematic diagram illustrating a process of determining an interfering user according to an embodiment of the present disclosure;

[0027] Fig.11 is a schematic diagram illustrating a process of determining an available beam of a passive signal reflecting device according to an embodiment of the present disclosure;

[0028] Fig.12 is a schematic diagram showing available beams of two passive signal reflecting devices determined according to an embodiment of the present disclosure;

[0029] Fig.13 is a schematic diagram showing a process of selecting an available beam pair according to an embodiment of the present disclosure;

[0030] Fig.14 is a signaling flow chart showing a process of selecting an available beam pair and enabling a passive signal reflection device to reflect a signal using the selected available beam pair according to an embodiment of the present disclosure;

[0031] Fig.15 is a flowchart illustrating a wireless communication method performed by an electronic device according to an embodiment of the present disclosure;

[0032] Fig.16 is a block diagram showing a first example of a schematic configuration of an eNB (Evolved Node B); and

[0033] Fig.17 is a block diagram showing a second example of a schematic configuration of an eNB.

[0034] Although the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown as examples in the drawings and are described in detail herein. It should be understood, however, that the description of specific embodiments herein is not intended to limit the present disclosure to the specific forms disclosed, but rather, the present disclosure is intended to cover all modifications, equivalents, and alternatives that fall within the spirit and scope of the present disclosure. It should be noted that throughout the several drawings, corresponding reference numerals indicate corresponding parts. DETAILED DESCRIPTION

[0035] Examples of the present disclosure will now be described more fully with reference to the accompanying drawings.The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses.

[0036] Example embodiments are provided so that the disclosure will be exhaustive and its scope will be fully conveyed to those skilled in the art. Numerous specific details such as examples of specific components, devices and methods are set forth to provide a detailed understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that the example embodiments may be implemented in many different forms without the use of specific details, none of which should be construed as limiting the scope of the present disclosure. In certain example embodiments, well-known processes, well-known structures and well-known techniques are not described in detail.

[0037] The description will be in the following order:

[0038] 1. Description of the problem;

[0039] 2. Configuration example of network side equipment;

[0040] 3. Method implementation examples;

[0041] 4. Application examples.

[0042] <1. Description of the problem>

[0043] Figure 1 is a schematic diagram showing the working mode of the passive signal reflection device. Figure 1 Taking LIS (Large Intelligent Surface) as an example, the working mode of the passive signal reflection device is explained. LIS includes multiple reflection elements (in Figure 1 Here, the gNB controls the controller via a wireless control link, and the controller controls the reflection direction of the LIS via a wired control link. The gNB sends a downlink signal to the LIS, and the LIS reflects the downlink signal to the user under the control of the controller. Thus, the gNB can communicate with the user through the LIS.

[0044] Figure 2 is a schematic diagram showing the working mode of the passive signal reflection device when the direct link between the gNB and the user is blocked. Figure 2 As shown in the figure, the direct link between gNB and the user is blocked due to the existence of obstacles, and there is a LIS on the building between gNB and the user. The gNB can control the reflection direction of the LIS through the wireless controller, and then send the downlink signal to the LIS, and the LIS uses the reflection direction controlled by the gNB to reflect the downlink signal to the user. Therefore, although the direct link between gNB and the user is blocked, the gNB can also send downlink signals to the user through the indirect link of gNB-LIS-user, thereby improving the communication quality.

[0045] Figure 3FIG. 1 is a schematic diagram showing the working mode of the passive signal reflection device when the user is located at the edge of the cell. Figure 3 As shown in Figure 1, the solid arc shows the coverage of the gNB, and the dotted arc shows the central coverage of the gNB. Figure 3 As shown in the figure, the user is at the edge of the coverage of the gNB, so the signal reception quality is poor. There is a LIS at the edge of the coverage of the gNB. The gNB can control the reflection direction of the LIS through the wireless controller, and then send the downlink signal to the LIS. The LIS uses the reflection direction controlled by the gNB to reflect the downlink signal to the user. As a result, the user can receive the signal through the direct link between the gNB and the user, and can also receive the signal reflected by the LIS, so the two received signals can be combined to improve the signal reception quality.

[0046] Figure 4 is a schematic diagram showing MIMO communication after a passive signal reflection device is introduced. Figure 4 Two LIS are shown, and the gNB can control the reflection direction of the two LIS respectively through the wireless controller. That is to say, the user can receive the signal through the direct link between the gNB and the user, and can also receive the signal reflected by each of the two LIS. MIMO communication can be achieved in this way. In traditional MIMO communication, there is serious path loss in the high frequency band, and it is generally difficult to obtain multipath. The direct path plays a major role, resulting in the inability to achieve the performance gain of MIMO. However, in MIMO communication with the introduction of LIS, multiple LIS provide multiple propagation paths, so that even in the high frequency band, the equivalent channel between the gNB and the user is multi-rank, so high-frequency MIMO communication can be achieved in LIS enhanced communication.

[0047] FIG5(a) is a schematic diagram showing the relationship between the received signal and the transmitted signal after the signal is reflected by the passive signal reflection device. As shown in FIG5(a), the signal transmitted by the gNB is represented as x, the channel matrix of the channel between the gNB and the LIS is represented as G, and the channel matrix of the channel between the LIS and the user is represented as h H , Θ represents the matrix for phase adjustment of LIS, and n represents the noise on the channel between gNB and LIS and the channel between LIS and user. Therefore, the user's received signal y can be expressed as: y = h H ΘGx+n. As mentioned above, LIS cannot estimate the channel matrix G and h H , but LIS can estimate the equivalent channel of the gNB-LIS-user link, i.e. h H ΘG, but the estimation complexity of the equivalent channel is high and the overhead is large.

[0048] FIG5(b) is a schematic diagram showing the relationship between the received signal and the transmitted signal after the signal is forwarded by the amplify-and-forward relay. As shown in FIG5(b), the signal transmitted by the gNB is represented as x, the channel matrix of the channel between the gNB and the amplify-and-forward relay is represented as G, and the channel matrix of the channel between the amplify-and-forward relay and the user is represented as h H , W represents the matrix of signal processing performed by the amplifier-forward relay, n1 represents the noise on the channel between the gNB and the amplifier-forward relay, and n2 represents the noise on the channel between the amplifier-forward relay and the user. Therefore, the user's received signal y can be expressed as: y = h H W(Gx+n1)+n2. Amplify-and-forward relay requires signal processing of the received signal, which can estimate the channel matrix G and h H .

[0049] Figure 6 is a schematic diagram showing a scenario in which a user is interfered with when a passive signal reflection device is used according to an embodiment of the present disclosure. Figure 6 As shown, the arrows labeled (1) show the direct link between gNB and user A and the direct link between gNB and user B, where the direct link between gNB and user A is blocked by an obstacle. As shown by the arrow labeled (2), gNB controls the reflection direction of LIS and sends a signal to user A via the reflection of LIS. This signal is also called the effective signal of user A. Here, because user B is relatively close to both user A and LIS, as shown by the arrow labeled (3), user B can also receive the reflected signal from LIS, which is an interference signal for user B. In other words, Figure 6 It shows that during the downlink transmission process using the LIS, the user equipment B receives the signal reflected by the LIS to the user equipment A, thereby causing interference.

[0050] Figure 7 FIG. 2 is a schematic diagram showing a scenario in which a user is interfered with when a passive signal reflection device is used according to another embodiment of the present disclosure. Figure 7As shown, the arrow labeled (1A) shows the direct link between the gNB and user A, and the arrow labeled (1B) shows the direct link between the gNB and user B. As shown by the arrow labeled (2A), the gNB controls the reflection direction of the LIS on the left and sends a signal to user A via the reflection of the LIS on the left. This signal is also called the effective signal of user equipment A. Since user B is relatively close to user A and the LIS on the left, as shown by the arrow labeled (3B), the signal reflected by the LIS on the left may also be received by user B. Such a signal is an interference signal for user B. Similarly, as shown by the arrow labeled (2B), the gNB controls the reflection direction of the LIS on the right and sends a signal to user B via the reflection of the LIS on the right. This signal is also called the effective signal of user equipment B. Since user A is relatively close to user B and the LIS on the right, as shown by the arrow labeled (3A), the signal reflected by the LIS on the right may also be received by user A. Such a signal is an interference signal for user A. In other words, Figure 7 It shows that during downlink transmission using the LIS, user equipment B receives a signal reflected from the LIS to user equipment A, thereby causing interference, and user equipment A also receives a signal reflected from the LIS to user equipment B, thereby causing interference.

[0051] According to an embodiment of the present disclosure, since the reflection direction of the passive signal reflection device can be controlled by the gNB, the gNB can reduce interference to other users by reasonably selecting the passive signal reflection device and the reflection direction of the passive signal reflection device.

[0052] Aiming at such a scenario, the present disclosure proposes an electronic device in a wireless communication system, a wireless communication method executed by the electronic device in the wireless communication system, and a computer-readable storage medium, so as to reasonably select the reflection direction of a passive signal reflection device, thereby reducing interference to other users in the cell while enhancing the communication quality.

[0053] The interference according to the present disclosure mainly refers to the interference caused to other users by the downlink signal from the gNB reflected by the passive signal reflecting device.

[0054] The wireless communication system according to the present disclosure may be a 5G NR (New Radio) communication system.

[0055] The network side device according to the present disclosure may be any type of base station device, for example, an eNB or a gNB (a base station in a fifth generation communication system).

[0056] The passive signal reflection device according to the present disclosure can integrate multiple reflection elements and can be connected to the intelligent controller by wire. The intelligent controller controls the phase of the reflection element of the passive signal reflection device, so as to adjust the phase of the incident signal. Preferably, the base station device can be wirelessly connected to the intelligent controller and control the intelligent controller, so as to control the reflection direction of the passive signal reflection device located within the coverage area of ​​the base station. The passive signal reflection device can be deployed at any location as needed, such as on the surface of a building, so as to improve the quality of wireless communication.

[0057] The passive signal reflecting device according to the present disclosure may be a passive signal reflecting surface, and the surface may be a plane or a curved surface. Further, the main material of the reflecting surface may be electromagnetic, that is, the passive signal reflecting device may be a passive electromagnetic signal reflecting device. In addition, the passive signal reflecting device can only reflect passively, so it is also called a passive signal reflecting surface. For example, the passive signal reflecting device according to the present disclosure may be at least one of the following: LIS (Large Intelligent Surface), IRS (Intelligent Reflecting Surface), RIS (Reconfiguration Intelligent Surface), PIM (Passive Intelligent Mirror). The present disclosure does not limit the name of the passive signal reflecting device, as long as it can passively and passively reflect the signal.

[0058] <2. Example of configuration of network-side equipment>

[0059] Figure 8 800 according to an embodiment of the present disclosure. The electronic device 800 here can be used as a network side device in a wireless communication system, specifically, can be used as a base station device in a wireless communication system.

[0060] like Figure 8 As shown, the electronic device 800 may include an interfering user determination unit 810 , an available beam pair determination unit 820 , a selection unit 830 , a control unit 840 and a communication unit 850 .

[0061] Here, each unit of the electronic device 800 may be included in a processing circuit. It should be noted that the electronic device 800 may include one processing circuit or multiple processing circuits. Further, the processing circuit may include various discrete functional units to perform various functions and / or operations. It should be noted that these functional units may be physical entities or logical entities, and units with different names may be implemented by the same physical entity.

[0062] According to an embodiment of the present disclosure, the interfering user determining unit 810 may determine an interfering user according to a plurality of available passive signal reflecting devices of the user equipment. Here, the interfering user is interfered by at least one available passive signal reflecting device.

[0063] According to an embodiment of the present disclosure, the user equipment may be any user equipment within the coverage of the electronic device 800, and is a user equipment to which a signal is to be reflected using a passive signal reflection device. An interfering user refers to other user equipment that may be interfered with if an available passive signal reflection device is used to reflect a signal to the user equipment. In other words, the interfering user may receive a reflected signal from an available passive signal reflection device of the user equipment, and such a signal is an interference signal for the interfering user. Here, there may be one or more interfering users. The interfering user determination unit 810 may determine one or more interfering users for any user equipment within the coverage of the electronic device 800.

[0064] According to an embodiment of the present disclosure, the available beam pair determination unit 820 can determine a set of available beam pairs based on multiple available passive signal reflection devices of the user equipment, wherein the two beams in each available beam pair are respectively available beams of two available passive signal reflection devices.

[0065] According to an embodiment of the present disclosure, the available beam pair determination unit 820 can determine a set of available beam pairs for any user equipment within the coverage of the electronic device 800, the set including multiple available beam pairs, each available beam pair including two available beams, and the two available beams belong to two different available passive signal reflection devices. The available beams of the available passive signal reflection device characterize the reflection direction of the available passive signal reflection device.

[0066] According to an embodiment of the present disclosure, the selection unit 830 may select an available beam pair from a set of available beam pairs according to the received signal quality of the user equipment and the received signal quality of one or more interfering users determined by the interfering user determination unit 810.

[0067] According to an embodiment of the present disclosure, the control unit 840 can adjust the reflection directions of the two available passive signal reflection devices to which the two beams in the selected available beam pair belong to the two beams respectively. For example, the control unit 840 can control the reflection direction of the available passive signal reflection device by wirelessly controlling a controller connected to the available passive signal reflection device.

[0068] According to an embodiment of the present disclosure, the electronic device 800 can send a signal to two available passive signal reflecting devices belonging to two beams in the selected available beam pair through the communication unit 850, so that the two available passive signal reflecting devices can respectively use the two beams in the selected available beam pair to reflect the signal from the electronic device 800 to the user equipment.

[0069] As described above, using the electronic device 800 according to the present disclosure, a suitable beam pair can be selected from multiple available beam pairs according to the received signal quality of the user equipment and the received signal quality of the interfering user, so that the passive signal reflection device can use the selected beam pair to reflect the signal to the user equipment. In this way, the received signal quality of the user equipment can be enhanced, and the interference to the interfering user can be reduced.

[0070] like Figure 8 As shown, according to an embodiment of the present disclosure, the electronic device 800 may further include an available device determining unit 860, which is used to determine multiple available passive signal reflection devices of the user equipment. That is, there may be multiple passive signal reflection devices within the coverage of the electronic device 800, and the available device determining unit 860 may determine multiple available passive signal reflection devices for the user equipment.

[0071] According to an embodiment of the present disclosure, the available device determination unit 860 may determine a plurality of available passive signal reflection devices of the user device according to the range of the received signal of the user device and the range of the transmitted signal of the electronic device 800. Here, the range of the received signal of the user device refers to a geographical area where the quality of the received signal of the user device is greater than a predetermined threshold, and the range of the transmitted signal of the electronic device 800 refers to a geographical area where the quality of the transmitted signal of the electronic device 800 is greater than a predetermined threshold. Preferably, the range of the received signal of the user device may be represented by a circle with the user device as the center and the effective receiving distance of the user device as the radius, and the range of the transmitted signal of the electronic device 800 may be represented by a circle with the electronic device 800 as the center and the effective transmitting distance of the electronic device 800 as the radius.

[0072] According to an embodiment of the present disclosure, the available device determination unit 860 may determine multiple passive signal reflection devices in the overlapping area of ​​the range of the received signal of the user equipment and the range of the transmitted signal of the electronic device 800 as multiple available passive signal reflection devices of the user equipment. Here, the passive signal reflection device in the overlapping area can well receive the signal from the electronic device 800, and the user equipment can also well receive the signal from the passive signal reflection device in the overlapping area, so the passive signal reflection device in the overlapping area can be determined as the available passive signal reflection device of the user equipment.

[0073] Fig. 9is a schematic diagram showing a process of determining an available passive signal reflection device according to an embodiment of the present disclosure. Fig. 9 In the figure, the electronic device 800 is implemented by a gNB, the kth user represents a user device that wishes to have the passive signal reflection device reflect the signal, the square area represents the LIS, and the circular area represents the user device. Here, the range of the gNB's signal transmission can be represented by a circle with the gNB as the center and r1 as the radius, r1 is the effective transmission distance of the gNB, and the kth user as the center and R 2，k The circle with the radius R represents the range of the received signal of the kth user. 2，k represents the effective receiving distance of the kth user. The distance between the gNB and the kth user is d k .like Fig. 9 As shown, there are two LISs in the overlapping area between the range of the gNB's transmitting signal and the range of the k-th user's receiving signal, so the available device determination unit 860 can determine these two LISs as available passive signal reflection devices for the k-th user.

[0074] According to an embodiment of the present disclosure, the interference user determination unit 810 may determine the interference range of each available passive signal reflection device according to the range of the reflection signal of each available passive signal reflection device and the location of the user equipment.

[0075] According to an embodiment of the present disclosure, the range of the reflected signal of the passive signal reflecting device can be represented by the reflection distance of the passive signal reflecting device. The reflection distance represents the farthest distance that the reflected signal can reach within the range of all reflection beams of the passive signal reflecting device. Preferably, the range of the reflected signal of the passive signal reflecting device can be a sector (particularly a semicircle) with the passive signal reflecting device as the center and the reflection distance of the passive signal reflecting device as the radius, and determined according to all beam directions of the passive signal reflecting device.

[0076] The interference user determination unit 810 can determine the interference range of the available passive signal reflection device according to the reflection distance of the available passive signal reflection device and / or the distance between the available passive signal reflection device and the user equipment. In addition, the interference range of the available passive signal reflection device can be a rectangle, a semicircle or a hexagon, which is not limited in the present disclosure.

[0077] According to one embodiment of the present disclosure, the following semicircular area can be used as the interference range of the available passive signal reflecting device: the semicircle has the available passive signal reflecting device as the center, the line between the available passive signal reflecting device and the user equipment as the axis of symmetry, and the reflection distance of the available passive signal reflecting device as the radius.

[0078] According to another embodiment of the present disclosure, the following rectangular area can be used as the interference range of the available passive signal reflecting device: the rectangle takes the line between the available passive signal reflecting device and the user equipment as the axis of symmetry, takes the distance between the available passive signal reflecting device and the user equipment as the length of the side parallel to the axis of symmetry, and takes twice the reflection distance of the available passive signal reflecting device as the length of the side perpendicular to the axis of symmetry.

[0079] According to an embodiment of the present disclosure, the interfering user determination unit 810 may determine the interference range of each available passive signal reflection device of the user equipment, and then determine the interfering user of the user equipment according to the interference range of each available passive signal reflection device. Specifically, the interfering user determination unit 810 may determine the user within the interference range of one or more available passive signal reflection devices as an interfering user. That is, the interfering user determination unit 810 determines the union of the users within the interference range of each available passive signal reflection device as the interfering user of the user equipment.

[0080] Fig.10 FIG. 2 is a schematic diagram showing a process of determining an interfering user according to an embodiment of the present disclosure. Fig.10 In FIG. 8 , the circular area labeled k represents the k-th user, and the two square areas labeled 1 and 2 represent the two available LISs of the k-th user determined by the available device determination unit 860. Fig.10 As shown, L 2，k represents the distance between LIS 2 and the kth user, and L2 represents twice the reflection distance of LIS 2. The line between LIS 2 and the kth user is taken as the symmetry axis and L 2，k The rectangular area with L being the length of the side parallel to the symmetry axis and L2 being the length of the side perpendicular to the symmetry axis represents the interference range of the LIS labeled 2 (shown by the dotted rectangular area). 1，k represents the distance between LIS 1 and the kth user, and L1 represents twice the reflection distance of LIS 1. 1，k The rectangular area with L1 being the length of the side parallel to the symmetry axis and L2 being the length of the side perpendicular to the symmetry axis represents the interference range of the LIS labeled 1 (shown by the dotted rectangular area). Fig.10 As shown, there is a user in the interference range of LIS numbered 2, namely the k+1th user shown by the circle numbered k+1, and there is no user in the interference range of LIS numbered 1. Fig.10 In the illustrated embodiment, the interfering user determination unit 810 may determine that the interfering user of the kth user is the k+1th user. As described above, Fig.10The process of determining an interfering user by the interfering user determining unit 810 is illustrated by taking a rectangular interference range area as an example. The process of determining an interfering user for an interference range area of ​​a semicircular area or other shapes is similar, and will not be described in detail in this disclosure.

[0081] like Figure 8 As shown, according to an embodiment of the present disclosure, the electronic device 800 may further include an available beam determining unit 870, which is used to determine an available beam of each available passive signal reflecting device.

[0082] According to an embodiment of the present disclosure, the available beam determining unit 870 may determine a beam of each available passive signal reflecting device that has an overlapping area with the range of reflected signals of other available passive signal reflecting devices as an available beam of the available passive signal reflecting device.

[0083] Fig.11 is a schematic diagram showing a process of determining an available beam of a passive signal reflection device according to an embodiment of the present disclosure. Fig.11 , two available passive signal reflection devices of the user equipment are shown: LIS1 and LIS2, and the range of the reflection signal of each LIS is a semicircle. For example, the range of the reflection signal of LIS1 is a semicircle with LIS1 as the center, the reflection distance of LIS1 as the radius, and intercepted in the direction of the array surface of LIS1, and all beams of LIS1 include beam 1, beam 2, beam 3, ... beam 6. The range of the reflection signal of LIS2 is a semicircle with LIS2 as the center, the reflection distance of LIS2 as the radius, and intercepted in the direction of the array surface of LIS2, and all beams of LIS2 include beam 1, beam 2, beam 3, ... beam 6. According to an embodiment of the present disclosure, beam 3, beam 4 and beam 5 of LIS1 have an overlapping area with the range of the reflection signal of LIS2, so the available beam determination unit 870 can determine beam 3, beam 4 and beam 5 of LIS1 as available beams of LIS1. Similarly, beam 1 and beam 2 of LIS2 have overlapping areas with the range of the reflection signal of LIS1, so the available beam determination unit 870 may determine beam 1 and beam 2 of LIS2 as available beams of LIS2.

[0084] Fig.12 FIG. 2 is a schematic diagram showing available beams of two passive signal reflection devices determined according to an embodiment of the present disclosure. Fig.12 As shown, the available beams of LIS1 include beam 3, beam 4 and beam 5, and the available beams of LIS2 include beam 1 and beam 2.

[0085] It is worth noting that Fig.11 and Fig.12The case where the available passive signal reflecting devices of the user equipment include two passive signal reflecting devices is shown. For the case where the available passive signal reflecting devices include more than three passive signal reflecting devices, it is sufficient as long as the beam of one passive signal reflecting device overlaps with the range of the reflected signal of any one or more other passive signal reflecting devices, and it is not necessary to overlap with the range of the reflected signals of all passive signal reflecting devices.

[0086] According to an embodiment of the present disclosure, since LIS1 and LIS2 are passive signal reflecting devices determined according to the range of the received signal of the user equipment, it is very likely that the user equipment is in the overlapping area of ​​the range of the reflected signal of LIS1 and the range of the reflected signal of LIS2. Therefore, the available beam determination unit 870 determines that the available beams of each available passive signal reflecting device can better fit the direction of the user equipment according to the method described above, so that the electronic device 800 can determine the final beam to be used according to the available beams of each available passive signal reflecting device, which can greatly improve the communication quality of the user equipment.

[0087] According to an embodiment of the present disclosure, after the available beam determining unit 870 determines the available beams of each available passive signal reflecting device, the available beam pair determining unit 820 may determine a set of available beam pairs according to the available beams of each available passive signal reflecting device.

[0088] According to an embodiment of the present disclosure, the available beam pair determination unit 820 may exhaustively enumerate or traverse each possible available beam pair, and the two available beams in each available beam pair are available beams from different available passive signal reflection devices. For example, in the case where the available passive signal reflection device of the user equipment includes two passive signal reflection devices, assuming that the two passive signal reflection devices include M and N available beams respectively, the available beam pair determination unit 820 may determine M×N available beam pairs.

[0089] For example, in Fig.12 In the example shown, the available beams of LIS1 include beam 3, beam 4, and beam 5, and the available beams of LIS2 include beam 1 and beam 2. Then, the available beam pair determination unit 820 can determine an available beam pair set including the following 6 available beam pairs (C1-C6):

[0090] C1 = beam 3 of LIS1, beam 1 of LIS2

[0091] C2 = beam 3 of LIS1, beam 2 of LIS2

[0092] C3 = beam 4 of LIS1, beam 1 of LIS2

[0093] C4 = beam 4 of LIS1, beam 2 of LIS2

[0094] C5 = beam 5 of LIS1, beam 1 of LIS2

[0095] C6 = beam 5 of LIS1, beam 2 of LIS2.

[0096] As described above, the available beam pair set is explained by taking the case where the available passive signal reflection device of the user equipment includes two passive signal reflection devices as an example. In the case where the available passive signal reflection device of the user equipment includes more than three passive signal reflection devices, the available beam pairs in the available beam pair set still only include two available beams, that is, the available beams belonging to two different available passive signal reflection devices. In this way, the passive signal reflection devices that ultimately serve the user equipment only include two passive signal reflection devices, and the other passive signal reflection devices can serve other user equipment, thereby not occupying too many resources on the basis of improving the reception quality of the user equipment.

[0097] As described above, the interfering user determination unit 810 can determine one or more interfering users of the user equipment, and the available beam pair determination unit 820 can determine a set of available beam pairs. The selection unit 830 and the control unit 840 will be described in detail below.

[0098] According to an embodiment of the present disclosure, for each available beam pair in the set of available beam pairs determined by the available beam pair determination unit 820, the control unit 840 may adjust the reflection directions of the two available passive signal reflection devices to which the two beams in the available beam pair belong to the two beams, respectively, to the two beams. For example, for the above available beam pairs: beam 3 of LIS1, beam 1 of LIS2, the control unit 840 may adjust the reflection direction of LIS1 to beam 3, and adjust the reflection direction of LIS2 to beam 1. Further, the electronic device 800 may send a downlink signal to the two available passive signal reflection devices, so as to reflect the downlink signal to the user equipment through the two available passive signal reflection devices, respectively. Here, the electronic device 800 may send a downlink signal to the available passive signal reflection device by means of beamforming, or may send a downlink signal to the available passive signal reflection device by means of an omnidirectional signal.

[0099] Fig.13 FIG. 1 is a schematic diagram showing a process of selecting available beam pairs according to an embodiment of the present disclosure. Fig.13 As shown, the gNB sends a downlink signal to LIS1 and LIS2. LIS1 can use beam 3 to reflect the downlink signal to the user equipment, and LIS2 can use beam 1 to reflect the downlink signal to the user equipment.

[0100] According to an embodiment of the present disclosure, the electronic device 800 may receive the received signal quality of the user equipment from the user equipment through the communication unit 850. Here, since the user equipment may receive reflected signals from two available passive signal reflection devices, the user equipment may combine the two reflected signals to determine the received signal quality. The user equipment may combine the two signals using any method known in the art, and the present disclosure does not limit this. In addition, various parameters may be used to characterize the received signal quality, such as received signal strength, etc.

[0101] According to an embodiment of the present disclosure, the electronic device 800 can receive the received signal quality of the interfering user from each of the one or more interfering users determined by the interfering user determination unit 810 through the communication unit 850. Similarly, various parameters can be used to characterize the received signal quality, such as received signal strength, etc.

[0102] According to an embodiment of the present disclosure, the selection unit 830 may select an available beam pair according to the received signal quality of the user equipment and the received signal quality of each interfering user. For example, the selection unit 830 may calculate the ratio of the received signal quality of the user equipment to the sum of the received signal qualities of all interfering users. Optionally, the selection unit 830 may also calculate the ratio of the received signal quality of the user equipment to the sum of the received signal qualities of all interfering users and the sum of the noise power.

[0103] As described above, for any available beam pair in the available beam pair set, the control unit 840 can adjust the reflection directions of the two available passive signal reflection devices to which the two beams in the available beam pair belong to the two beams respectively to the two beams, the user equipment and each interfering user measure the received signal quality, and the selection unit 830 can calculate the ratio of the received signal quality of the user equipment to the sum of the received signal qualities of all interfering users based on the received signal quality of the user equipment and the received signal quality of each interfering user. That is, for any available beam pair in the available beam pair set, the selection unit 830 can calculate such a ratio.

[0104] According to an embodiment of the present disclosure, the selection unit 830 can select an available beam pair with the largest ratio from the set of available beam pairs. That is, for the selected available beam pair, the received signal quality of the user equipment is better, while the received signal quality of the interfering user is worse, that is, the interfering user is less interfered. Therefore, according to an embodiment of the present disclosure, the electronic device 800 selects the beam pair in such a way that the channel quality of the user equipment can be improved while reducing the interference to other users.

[0105] According to an embodiment of the present disclosure, the selection unit 830 may select a beam pair for the kth user according to the following formula:

[0106]

[0107] Where i represents the number of the available beam pair in the available beam pair set, P k，i represents the received signal quality of the kth user for the i-th available beam pair, P k′，i represents the received signal quality of the interfering user k' for the i-th available beam pair, ∑ k′≠k P k′，i represents the sum of the received signal qualities of all interfering users for the i-th available beam pair, P N represents the noise power. opt represents the number of the available beam pair selected by the selection unit 830, which is equal to the ratio The maximum value of i.

[0108] According to an embodiment of the present disclosure, after the selection unit 830 selects an available beam pair, the control unit 840 can adjust the reflection directions of the two available passive signal reflection devices to which the two beams in the selected available beam pair belong to the two beams respectively to the two beams. Then, the electronic device 800 can send a signal to the two available passive signal reflection devices to which the two beams in the selected available beam pair belong through the communication unit 850, so that the two available passive signal reflection devices respectively use the two beams in the selected available beam pair to reflect the signal from the electronic device 800 to the user equipment.

[0109] According to an embodiment of the present disclosure, the electronic device 800 may determine a mode for enabling a passive signal reflection device for a user equipment, that is, using the passive signal reflection device to reflect a signal from the electronic device 800. For example, the electronic device 800 may determine the received signal quality of the user equipment by way of feedback from the user equipment, thereby determining a mode for enabling the passive signal reflection device when the received signal quality of the user equipment is less than a predetermined threshold.

[0110] According to an embodiment of the present disclosure, the mode of the passive signal reflection device can also be enabled according to the request of the user equipment. For example, the electronic device 800 can receive request information indicating the mode of enabling the passive signal reflection device from the user equipment through the communication unit 850, and enable the mode of the passive signal reflection device for the user equipment in response to the request information.

[0111] According to an embodiment of the present disclosure, the electronic device 800 may collect configuration information of each passive signal reflecting device within its coverage, including the position, the size of the reflecting surface, the angle range of all reflected beams of the reflecting surface, etc. This may be achieved by reporting the above information to the electronic device 800 when deploying or adjusting each passive signal reflecting device. Further, the electronic device 800 may send information on whether there is a passive signal reflecting device within its coverage to the user equipment.

[0112] According to an embodiment of the present disclosure, when there is a passive signal reflection device within the coverage of the electronic device 800, the user equipment can determine whether to enable the mode of the passive signal reflection device according to the quality of the received signal. Specifically, when the quality of the received signal of the user equipment is less than a predetermined threshold, the user equipment can determine that the mode of the passive signal reflection device needs to be enabled. For example, when the following inequality holds, the kth user can determine the mode of enabling the passive signal reflection device:

[0113] log2(1+p k σ -2 )<R min，k

[0114] Among them, p k represents the received signal power of the kth user, σ 2 Represents the sum of the interference signal power and the noise power, R min，k A predetermined threshold representing the quality of the received signal of the kth user.

[0115] As described above, according to an embodiment of the present disclosure, the mode of the passive signal reflection device can be enabled by the electronic device 800 or the user equipment. In the case of enabling the mode of the passive signal reflection device, the electronic device 800 can determine multiple available passive signal reflection devices of the user equipment and one or more interfering users, and can determine the available beams of each available passive signal reflection device, thereby determining a set of available beam pairs. Further, the electronic device 800 can select an available beam pair from the set of available beam pairs based on the received signal quality of the user equipment and the received signal quality of each interfering user, and make the two passive signal reflection devices to which the two available beams included in the selected available beam pair belong use the two available beams to reflect signals to the user equipment. Thus, the electronic device 800 can reasonably select the passive signal reflection device and the available beam, thereby reducing interference to other users while improving the received signal quality of the user equipment.

[0116] Fig.14 1 is a signaling flow chart showing the process of selecting an available beam pair and causing a passive signal reflection device to reflect a signal using the selected available beam pair according to an embodiment of the present disclosure. Fig.14In the embodiment, the gNB can be implemented by the electronic device 800, and the passive signal reflection device is explained by taking the LIS as an example. In step S1401, the UE sends a request message to the gNB to request to enable the mode of the passive signal reflection device. Next, in step S1402, the gNB determines a plurality of available LISs for the UE. Next, in step S1403, the gNB determines one or more interfering users for the UE. Next, in step S1404, the gNB determines the available beams for each available LIS. Next, in step S1405, the gNB determines a set of available beam pairs based on the available beams of each LIS. Next, in step S1406, for each available beam pair in the set of available beam pairs, the gNB controls the reflection direction of the LIS to which the two available beams included in the available beam pair belong and sends a signal to the two LISs. Next, in step S1407, the LIS reflects the signal to the UE according to the control of the gNB. Next, in step S1408, the UE measures the received signal quality. At the same time, the interfering user can also measure the received signal quality. Next, in step S1409, the UE feeds back the measured received signal quality to the gNB, and the interfering user can also feed back the measured received signal quality to the gNB. Next, in step S1410, the gNB selects an available beam pair from the set of available beam pairs based on the received signal quality of the UE and the received signal quality of the interfering user. Next, in step S1411, the gNB adjusts the reflection direction of the two LISs to which the two available beams included in the selected available beam pair belong to the direction of the two available beams, and sends a downlink signal to the two LISs. Next, in step S1412, the two LISs reflect the signal to the UE using the two available beams included in the selected available beam pair. As a result, the UE can receive the signal reflected by the selected available beam pair, thereby improving the communication quality.

[0117] <3. Method Example>

[0118] Next, a wireless communication method performed by the electronic device 800 as a network side device in a wireless communication system according to an embodiment of the present disclosure will be described in detail.

[0119] Fig.15 8 is a flowchart illustrating a wireless communication method performed by an electronic device 800 as a network side device in a wireless communication system according to an embodiment of the present disclosure.

[0120] like Fig.15 As shown, in step S1510, an interfering user is determined according to a plurality of available passive signal reflecting devices of a user equipment, wherein the interfering user is interfered by at least one available passive signal reflecting device.

[0121] Next, in step S1520, a set of available beam pairs is determined according to multiple available passive signal reflecting devices of the user equipment, wherein the two beams in each available beam pair are respectively available beams of two available passive signal reflecting devices.

[0122] Next, in step S1530, an available beam pair is selected from a set of available beam pairs according to the received signal quality of the user equipment and the received signal quality of the interfering user.

[0123] Next, in step S1540, the reflection directions of the two available passive signal reflecting devices belonging to the two beams in the selected available beam pair are respectively adjusted to the two beams, so that the two available passive signal reflecting devices respectively use the two beams to reflect the signal from the electronic device 800 to the user equipment.

[0124] Preferably, the wireless communication method further comprises: determining a plurality of available passive signal reflection devices of the user equipment according to a range of receiving signals of the user equipment and a range of sending signals of the electronic device 800 .

[0125] Preferably, determining a plurality of available passive signal reflecting devices of the user equipment includes: determining a plurality of passive signal reflecting devices in an overlapping area of ​​a range of receiving signals of the user equipment and a range of transmitting signals of the electronic device 800 as a plurality of available passive signal reflecting devices.

[0126] Preferably, determining the interfering user comprises: determining the interference range of each available passive signal reflecting device according to the range of the reflected signal of each available passive signal reflecting device and the position of the user equipment; and determining the interfering user according to the interference range of each available passive signal reflecting device.

[0127] Preferably, determining the interfering users comprises: determining users located within the interference range of one or more available passive signal reflection devices as interfering users.

[0128] Preferably, the wireless communication method also includes: determining a beam of each available passive signal reflecting device having an overlapping area with the range of reflected signals of other available passive signal reflecting devices as an available beam of the available passive signal reflecting device; and determining a set of available beam pairs based on the available beams of each available passive signal reflecting device.

[0129] Preferably, the wireless communication method also includes: performing the following operations for each available beam pair: adjusting the reflection directions of two available passive signal reflecting devices to which the two beams in the available beam pair belong to the two beams respectively, and sending downlink signals to the user equipment through the two available passive signal reflecting devices respectively; receiving the receiving signal quality of the user equipment from the user equipment; and receiving the receiving signal quality of the interfering user from each interfering user.

[0130] Preferably, selecting an available beam pair includes: for each available beam pair, calculating the ratio of the received signal quality of the user equipment to the sum of the received signal qualities of all interfering users; and selecting an available beam pair with the largest ratio from the set of available beam pairs.

[0131] Preferably, the wireless communication method further comprises: receiving request information indicating a mode of enabling the passive signal reflecting device from the user equipment, wherein the mode of enabling the passive signal reflecting device indicates that the signal from the electronic device 800 is reflected by the passive signal reflecting device.

[0132] Preferably, the passive signal reflecting device is a passive electromagnetic signal reflecting surface.

[0133] According to an embodiment of the present disclosure, the subject that executes the above method may be an electronic device 800 according to an embodiment of the present disclosure, and therefore all the embodiments of the electronic device 800 in the foregoing text are applicable hereto.

[0134] <4. Application Examples>

[0135] The technology of the present disclosure can be applied to various products.

[0136] For example, the network side device may also be implemented as any type of base station device, such as a macro eNB and a small eNB, and may also be implemented as any type of gNB (a base station in a 5G system). A small eNB may be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, a base station may be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS). A base station may include: a main body (also referred to as a base station device) configured to control wireless communications; and one or more remote radio heads (RRHs) arranged at a location different from the main body.

[0137] The user equipment may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle-type mobile router, and a digital camera) or a vehicle-mounted terminal (such as a car navigation device). The user equipment may also be implemented as a terminal that performs machine-to-machine (M2M) communication (also referred to as a machine type communication (MTC) terminal). In addition, the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned user equipments.

[0138] <Application examples for base stations>

[0139] (First application example)

[0140] Fig.16 16 is a block diagram showing a first example of a schematic configuration of a gNB to which the technology of the present disclosure can be applied. The gNB 1600 includes one or more antennas 1610 and a base station device 1620. The base station device 1620 and each antenna 1610 can be connected to each other via an RF cable.

[0141] Each of the antennas 1610 includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna) and is used for the base station device 1620 to transmit and receive wireless signals. Fig.16 As shown, gNB 1600 may include multiple antennas 1610. For example, multiple antennas 1610 may be compatible with multiple frequency bands used by gNB 1600. Fig.16 An example is shown in which the gNB 1600 includes multiple antennas 1610, but the gNB 1600 may also include a single antenna 1610.

[0142] The base station device 1620 includes a controller 1621 , a memory 1622 , a network interface 1623 , and a wireless communication interface 1625 .

[0143] The controller 1621 may be, for example, a CPU or a DSP, and operates various functions of the higher layers of the base station device 1620. For example, the controller 1621 generates a data packet based on the data in the signal processed by the wireless communication interface 1625, and transmits the generated packet via the network interface 1623. The controller 1621 may bundle data from a plurality of baseband processors to generate a bundled packet, and transmit the generated bundled packet. The controller 1621 may have a logical function to perform the following control: the control may be such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. The control may be performed in conjunction with a nearby gNB or core network node. The memory 1622 includes a RAM and a ROM, and stores programs executed by the controller 1621 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

[0144] The network interface 1623 is a communication interface for connecting the base station device 1620 to the core network 1624. The controller 1621 can communicate with the core network node or another gNB via the network interface 1623. In this case, the gNB 1600 and the core network node or other gNBs can be connected to each other through logical interfaces such as S1 interfaces and X2 interfaces. The network interface 1623 can also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 1623 is a wireless communication interface, the network interface 1623 can use a higher frequency band for wireless communication compared to the frequency band used by the wireless communication interface 1625.

[0145] The wireless communication interface 1625 supports any cellular communication scheme (such as long term evolution (LTE) and LTE-Advanced), and provides wireless connection to a terminal located in the cell of the gNB 1600 via the antenna 1610. The wireless communication interface 1625 may generally include, for example, a baseband (BB) processor 1626 and an RF circuit 1627. The BB processor 1626 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing of layers (such as L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)). Instead of the controller 1621, the BB processor 1626 may have part or all of the above-mentioned logical functions. The BB processor 1626 may be a memory storing a communication control program, or a module including a processor configured to execute a program and related circuits. Updating the program may change the function of the BB processor 1626. The module may be a card or a blade inserted into a slot of the base station device 1620. Alternatively, the module may also be a chip mounted on a card or a blade. Meanwhile, the RF circuit 1627 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1610 .

[0146] like Fig.16 As shown, the wireless communication interface 1625 may include multiple BB processors 1626. For example, the multiple BB processors 1626 may be compatible with multiple frequency bands used by the gNB 1600. Fig.16 As shown, the wireless communication interface 1625 may include multiple RF circuits 1627. For example, the multiple RF circuits 1627 may be compatible with multiple antenna elements. Fig.16 An example is shown in which the wireless communication interface 1625 includes a plurality of BB processors 1626 and a plurality of RF circuits 1627 , but the wireless communication interface 1625 may also include a single BB processor 1626 or a single RF circuit 1627 .

[0147] (Second application example)

[0148] Fig.17 17 is a block diagram showing a second example of a schematic configuration of a gNB to which the technology of the present disclosure can be applied. The gNB 1730 includes one or more antennas 1740, a base station device 1750, and an RRH 1760. The RRH 1760 and each antenna 1740 can be connected to each other via an RF cable. The base station device 1750 and the RRH 1760 can be connected to each other via a high-speed line such as an optical fiber cable.

[0149] Each of the antennas 1740 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 1760 to transmit and receive wireless signals. Fig.17 As shown, gNB 1730 may include multiple antennas 1740. For example, multiple antennas 1740 may be compatible with multiple frequency bands used by gNB 1730. Fig.17 An example is shown in which the gNB 1730 includes multiple antennas 1740, but the gNB 1730 may also include a single antenna 1740.

[0150] The base station device 1750 includes a controller 1751, a memory 1752, a network interface 1753, a wireless communication interface 1755, and a connection interface 1757. The controller 1751, the memory 1752, and the network interface 1753 are similar to the reference Fig.16 The controller 1621, memory 1622, and network interface 1623 described are the same.

[0151] The wireless communication interface 1755 supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal located in a sector corresponding to the RRH 1760 via the RRH 1760 and the antenna 1740. The wireless communication interface 1755 may generally include, for example, a BB processor 1756. In addition to the BB processor 1756 being connected to the RF circuit 1764 of the RRH 1760 via the connection interface 1757, the BB processor 1756 is connected to the reference RF circuit 1764 of the RRH 1760. Fig.16 The same as the BB processor 1626 described above. Fig.17 As shown, the wireless communication interface 1755 may include multiple BB processors 1756. For example, the multiple BB processors 1756 may be compatible with multiple frequency bands used by the gNB 1730. Fig.17 An example is shown in which the wireless communication interface 1755 includes a plurality of BB processors 1756 , but the wireless communication interface 1755 may also include a single BB processor 1756 .

[0152] The connection interface 1757 is an interface for connecting the base station device 1750 (wireless communication interface 1755) to the RRH 1760. The connection interface 1757 may also be a communication module for connecting the base station device 1750 (wireless communication interface 1755) to the RRH 1760 for communication in the above-mentioned high-speed line.

[0153] The RRH 1760 includes a connection interface 1761 and a wireless communication interface 1763 .

[0154] The connection interface 1761 is an interface for connecting the RRH 1760 (wireless communication interface 1763) to the base station device 1750. The connection interface 1761 may also be a communication module for communication in the above-mentioned high-speed line.

[0155] The wireless communication interface 1763 transmits and receives wireless signals via the antenna 1740. The wireless communication interface 1763 may generally include, for example, an RF circuit 1764. The RF circuit 1764 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 1740. Fig.17 As shown, the wireless communication interface 1763 may include multiple RF circuits 1764. For example, the multiple RF circuits 1764 may support multiple antenna elements. Fig.17 An example is shown in which the wireless communication interface 1763 includes a plurality of RF circuits 1764 , but the wireless communication interface 1763 may also include a single RF circuit 1764 .

[0156] exist Fig.16 and Fig.17 In the gNB 1600 and gNB 1730 shown, by using Figure 8The described interfering user determination unit 810, available beam pair determination unit 820, selection unit 830, control unit 840, available device determination unit 860 and available beam determination unit 870 may be implemented by the controller 1621 and / or the controller 1751. At least a portion of the functions may also be implemented by the controller 1621 and the controller 1751. For example, the controller 1621 and / or the controller 1751 may perform the functions of determining an interfering user, determining an available beam pair, selecting an available beam pair, controlling the reflection direction of a passive signal reflection device, determining an available passive signal reflection device of a user equipment, and determining an available beam of a passive signal reflection device.

[0157] The preferred embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is certainly not limited to the above examples. Those skilled in the art may obtain various changes and modifications within the scope of the appended claims, and it should be understood that these changes and modifications will naturally fall within the technical scope of the present disclosure.

[0158] For example, the units shown in dashed boxes in the functional block diagrams shown in the accompanying drawings all indicate that the functional units are optional in the corresponding device, and the various optional functional units can be combined in an appropriate manner to achieve the required functions.

[0159] For example, a plurality of functions included in one unit in the above embodiments may be implemented by separate devices. Alternatively, a plurality of functions implemented by a plurality of units in the above embodiments may be implemented by separate devices, respectively. In addition, one of the above functions may be implemented by a plurality of units. Needless to say, such a configuration is included in the technical scope of the present disclosure.

[0160] In this specification, the steps described in the flowchart include not only the processing performed in time series in the order described, but also the processing performed in parallel or individually rather than necessarily in time series. In addition, even in the steps processed in time series, it goes without saying that the order can be appropriately changed.

[0161] Although the embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings, it should be understood that the embodiments described above are only used to illustrate the present disclosure and do not constitute a limitation of the present disclosure. For those skilled in the art, various modifications and changes can be made to the above embodiments without departing from the essence and scope of the present disclosure. Therefore, the scope of the present disclosure is limited only by the attached claims and their equivalent meanings.

Claims

1. An electronic device comprising a processing circuit configured to: Determining an interfering user based on a plurality of available passive signal reflection devices for a user equipment, wherein: The interfering user is interfered by at least one available passive signal reflecting device; Determine a set of available beam pairs according to a plurality of available passive signal reflecting devices for the user equipment, wherein two beams in each available beam pair are respectively available beams of two available passive signal reflecting devices; Selecting an available beam pair from the set of available beam pairs according to the received signal quality of the user equipment and the received signal quality of the interfering user; and The reflection directions of two available passive signal reflecting devices belonging to two beams in the selected available beam pair are respectively adjusted to the directions of the two beams, so that the two available passive signal reflecting devices respectively use the two beams to reflect the signal from the electronic device to the user equipment.

2. The electronic device according to claim 1, wherein: The processing circuit is further configured to: A plurality of available passive signal reflection devices for the user equipment is determined according to a range of a received signal of the user equipment and a range of a sent signal of the electronic device.

3. The electronic device according to claim 2, wherein: The processing circuit is further configured to: A plurality of passive signal reflecting devices in an overlapping area of ​​a range of receiving signals of the user equipment and a range of sending signals of the electronic device are determined as the plurality of available passive signal reflecting devices.

4. The electronic device according to claim 1, wherein: The processing circuit is further configured to: Determine the interference range of each available passive signal reflecting device according to the range of the reflected signal of each available passive signal reflecting device and the position of the user equipment; and The interfering user is determined according to the interference range of each available passive signal reflecting device.

5. The electronic device according to claim 4, wherein: The processing circuit is further configured to: A user located within the interference range of one or more available passive signal reflecting devices is determined as the interfering user.

6. The electronic device according to claim 1, wherein: The processing circuit is further configured to: Determine a beam of each available passive signal reflecting device that has an overlapping area with the range of the reflected signal of other available passive signal reflecting devices as an available beam of the available passive signal reflecting device; as well as The set of available beam pairs is determined according to available beams of each available passive signal reflecting device.

7. The electronic device according to claim 1, wherein: The processing circuit is further configured to perform the following operations for each available beam pair: Respectively adjusting the reflection directions of two available passive signal reflection devices to which two beams in the available beam pair belong to be the directions of the two beams, and respectively sending downlink signals to the user equipment through the two available passive signal reflection devices; receiving, from the user equipment, a received signal quality of the user equipment; as well as A received signal quality of each interfering user is received from the interfering user.

8. The electronic device according to claim 7, wherein: The processing circuit is further configured to: For each available beam pair, calculating a ratio of a received signal quality of the user equipment to a sum of received signal qualities of all interfering users; as well as An available beam pair with the largest ratio is selected from the set of available beam pairs.

9. The electronic device according to claim 1, wherein: The processing circuit is further configured to: Request information indicating a mode of enabling a passive signal reflecting device is received from the user equipment, wherein the mode of enabling the passive signal reflecting device indicates that a signal from the electronic device is reflected by the passive signal reflecting device.

10. The electronic device according to claim 1, wherein: The passive signal reflecting device is a passive electromagnetic signal reflecting surface.

11. A wireless communication method performed by an electronic device, comprising: Determining an interfering user based on a plurality of available passive signal reflecting devices for a user equipment, wherein the interfering user is interfered by at least one of the available passive signal reflecting devices; Determine a set of available beam pairs according to a plurality of available passive signal reflecting devices for the user equipment, wherein two beams in each available beam pair are respectively available beams of two available passive signal reflecting devices; Selecting an available beam pair from the set of available beam pairs according to the received signal quality of the user equipment and the received signal quality of the interfering user; and The reflection directions of two available passive signal reflecting devices belonging to two beams in the selected available beam pair are respectively adjusted to the directions of the two beams, so that the two available passive signal reflecting devices respectively use the two beams to reflect the signal from the electronic device to the user equipment.

12. The wireless communication method according to claim 11, wherein: The wireless communication method further comprises: A plurality of available passive signal reflection devices for the user equipment is determined according to a range of a received signal of the user equipment and a range of a sent signal of the electronic device.

13. The wireless communication method according to claim 12, wherein: Determining a plurality of available passive signal reflection devices for the user equipment includes: A plurality of passive signal reflecting devices in an overlapping area of ​​a range of receiving signals of the user equipment and a range of sending signals of the electronic device are determined as the plurality of available passive signal reflecting devices.

14. The wireless communication method according to claim 11, wherein: Determining the interfering user includes: Determine the interference range of each available passive signal reflecting device according to the range of the reflected signal of each available passive signal reflecting device and the position of the user equipment; and The interfering user is determined according to the interference range of each available passive signal reflecting device.

15. The wireless communication method according to claim 14, wherein: Determining the interfering user includes: A user located within the interference range of one or more available passive signal reflecting devices is determined as the interfering user.

16. The wireless communication method according to claim 11, wherein: The wireless communication method further comprises: Determine a beam of each available passive signal reflecting device that has an overlapping area with the range of the reflected signal of other available passive signal reflecting devices as an available beam of the available passive signal reflecting device; and The set of available beam pairs is determined according to available beams of each available passive signal reflecting device.

17. The wireless communication method according to claim 11, wherein: The wireless communication method further comprises: For each available beam pair, do the following: Respectively adjusting the reflection directions of two available passive signal reflection devices to which two beams in the available beam pair belong to be the directions of the two beams, and respectively sending downlink signals to the user equipment through the two available passive signal reflection devices; receiving, from the user equipment, a received signal quality of the user equipment; and A received signal quality of each interfering user is received from the interfering user.

18. The wireless communication method according to claim 17, wherein: Available beam pairs include: For each available beam pair, calculating a ratio of a received signal quality of the user equipment to a sum of received signal qualities of all interfering users; and An available beam pair with the largest ratio is selected from the set of available beam pairs.

19. The wireless communication method according to claim 11, wherein: The wireless communication method further comprises: Request information indicating a mode of enabling a passive signal reflecting device is received from the user equipment, wherein the mode of enabling the passive signal reflecting device indicates that a signal from the electronic device is reflected by the passive signal reflecting device.

20. The wireless communication method according to claim 11, wherein: The passive signal reflecting device is a passive electromagnetic signal reflecting surface.

21. A computer-readable storage medium comprising executable computer instructions, which, when executed by a computer, cause the computer to perform the wireless communication method according to any one of claims 11-20.

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