Electronic equipment, wireless communication method and computer readable storage medium

Abstract

The invention relates to electronic equipment, a wireless communication method and a computer readable storage medium. The electronic equipment for the base station side comprises a processing circuit which is configured to generate a switching request, and the switching request comprises information of an intelligent surface providing service for user equipment within the service range of the electronic equipment; and sending the switching request to target base station equipment of the user equipment, so that the intelligent surface continues to provide service for the user equipment after the user equipment is switched to the target base station equipment. According to the electronic equipment, the wireless communication method and the computer readable storage medium disclosed by the invention, the multi-point cooperation technology and the intelligent surface technology can be combined, so that the inter-cell interference is reduced or avoided under the condition that the communication quality of the user equipment is not influenced, the burden of the cooperation base station caused by joint transmission is reduced, and the user experience is improved. And a reflective link can be maintained even when a cell handover occurs.

Description

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

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 2, 2022, with application number 202211070478.2 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] Embodiments of the present disclosure generally relate to the field of wireless communications, and more particularly, to electronic devices, wireless communication methods, and computer-readable storage media. More particularly, the present disclosure relates to an electronic device for a base station, a wireless communication method performed by the electronic device for a base station in a wireless communication system, and a computer-readable storage medium. Background Art

[0003] Multi-point coordination technology can be used to solve the problem of interference between base stations. Multi-point coordination technology can include coordinated beamforming and joint transmission. According to the coordinated beamforming technology, in the event of cell interference, the coordinated base station can adjust its beam direction to reduce or avoid interference to the users served by the serving base station. According to the joint transmission technology, the serving base station and the coordinated base station can exchange data between the serving base station and the user, so that the serving base station and the coordinated base station can jointly send data to the user or jointly receive data from the user. It can be seen that in coordinated beamforming, in order to reduce or avoid interference, it is necessary to adjust the beam direction of the user in the coordinated base station, which will have a certain impact on the communication quality of the user. In joint transmission, since the serving base station and the coordinated base station need to exchange user data, the burden on the backhaul link will be increased and the delay will be increased.

[0004] Reconfigurable Intelligent Surfaces (RIS), also known as smart metasurfaces, are low-cost, low-energy, programmable, and easy to deploy. RIS can intelligently reconfigure the wireless propagation environment by integrating a large number of low-cost passive or active reflective elements on a flat surface. Therefore, RIS has great potential for enhancing coverage and capacity of future wireless networks, eliminating coverage blind spots, and serving cell-edge users.

[0005] The present disclosure aims to solve at least one of the above technical problems by combining CoMP technology with RIS technology. Furthermore, after the introduction of RIS, maintaining the reflection link to ensure communication quality in the event of a cell handover is another technical problem that the present disclosure aims to solve.

[0006] 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 present disclosure aims to provide an electronic device, a wireless communication method, and a computer-readable storage medium. These electronic devices, combined with coordinated multi-point (CoMP) technology and RIS technology, can reduce or avoid inter-cell interference without affecting the communication quality of user equipment, reduce the burden on cooperative base stations due to joint transmission, and maintain reflection links even in the event of a cell handover.

[0009] According to one aspect of the present disclosure, an electronic device for a base station side is provided, comprising a processing circuit, configured to: generate a switching request, the switching request comprising information of a smart surface that provides services to a user device within a service range of the electronic device; and send the switching request to a target base station device of the user device, so that after the user device switches to the target base station device, the smart surface continues to provide services to the user device.

[0010] According to another aspect of the present disclosure, an electronic device for a base station side is provided, comprising a processing circuit, configured to: determine that transmission between the electronic device and a user device served by the electronic device is interfered with by transmission between an adjacent base station device and other user devices served by the adjacent base station device; and in response to the interference, configure a smart surface so that the electronic device assists in data transmission with the user device through the smart surface.

[0011] According to another aspect of the present disclosure, a wireless communication method performed by an electronic device for a base station side is provided, including: generating a switching request, the switching request including information of a smart surface that provides services to user equipment within a service range of the electronic device; and sending the switching request to a target base station device of the user equipment, so that after the user equipment switches to the target base station device, the smart surface continues to provide services to the user equipment.

[0012] According to another aspect of the present disclosure, a wireless communication method performed by an electronic device for a base station side is provided, including: determining that the transmission between the electronic device and a user device served by the electronic device is interfered with by the transmission between an adjacent base station device and other user devices served by the adjacent base station device; and in response to the interference, configuring a smart surface so that the electronic device assists in data transmission with the user device through the smart surface.

[0013] 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.

[0014] According to another aspect of the present disclosure, a computer program is provided. When the computer program is executed by a computer, the computer is caused to perform the wireless communication method according to the present disclosure.

[0015] Using the electronic device, wireless communication method, and computer-readable storage medium disclosed herein, a handover request can include smart surface information, allowing the target base station to quickly learn about the smart surface serving the user equipment. This allows the reflective link to be maintained even in the event of a cell handover.

[0016] By using the electronic device, wireless communication method, and computer-readable storage medium according to the present disclosure, in the event of inter-cell interference, services can be provided to user equipment through a reflection link without changing the beam direction of the user equipment served by an adjacent base station device, thereby reducing or avoiding inter-cell interference without affecting the communication quality of the user equipment.

[0017] Using the electronic devices, wireless communication methods, and computer-readable storage media disclosed herein, a base station device can determine a joint transmission strategy so that, when a neighboring base station device is overloaded, the smart surface provides joint transmission, thereby reducing the burden on the cooperating base stations caused by joint transmission. Furthermore, if joint transmission is already being provided by the smart surface, the neighboring base station device can be requested to perform further joint transmission, thereby improving spatial division gain.

[0018] 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

[0019] 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:

[0020] FIG1 is a schematic diagram illustrating a cell handover scenario according to an embodiment of the present disclosure;

[0021] FIG2 is a block diagram illustrating an example of a configuration of an electronic device according to an embodiment of the present disclosure;

[0022] FIG3 is a schematic diagram showing a scenario in which a user equipment is still served by a smart surface after being handed over to a target base station device;

[0023] FIG4 is a signaling flow chart showing a case where an embodiment of the present disclosure is applied in a cell handover scenario;

[0024] FIG5 is a schematic diagram illustrating a scenario of interference according to an embodiment of the present disclosure;

[0025] FIG6 is a schematic diagram showing a scenario served by a smart surface in a case where user 1 is disturbed;

[0026] FIG7 is a signaling flow chart illustrating a case where an embodiment of the present disclosure is applied in an interference scenario;

[0027] 8 is a signaling flow diagram illustrating determination of a reflection link beam direction in the case of a non-transparent smart surface according to an embodiment of the present disclosure;

[0028] 9 is a signaling flow diagram illustrating determination of a reflection link beam direction in the case of a transparent smart surface according to an embodiment of the present disclosure;

[0029] FIG10 is a schematic diagram illustrating a scenario in which an adjacent base station device is overloaded according to an embodiment of the present disclosure;

[0030] FIG11 is a schematic diagram showing a scenario in which a user equipment is served by a smart surface when an adjacent base station device is overloaded;

[0031] FIG12 is a signaling flow chart showing a case where an embodiment of the present disclosure is applied in a downlink in a scenario where a neighboring base station device is overloaded;

[0032] FIG13 is a signaling flow chart showing an embodiment of the present disclosure applied in an uplink in a scenario where a neighboring base station device is overloaded;

[0033] FIG14 is a schematic diagram illustrating a scenario in which a neighboring base station needs to perform joint transmission when a UE is served by a serving base station and a smart surface according to an embodiment of the present disclosure;

[0034] FIG15 is a schematic diagram illustrating a scenario in which neighboring base stations perform joint transmission in the downlink when a UE is served by a serving base station and a smart surface;

[0035] FIG16 is a schematic diagram illustrating a scenario in which neighboring base stations perform joint transmission in the uplink when a UE is served by a serving base station and a smart surface;

[0036] FIG17 is a signaling flow chart showing a case where an embodiment of the present disclosure is applied in a downlink and in a joint transmission scenario;

[0037] FIG18 is a signaling flow chart showing the case where an embodiment of the present disclosure is applied in an uplink and in a joint transmission scenario;

[0038] FIG19 is a block diagram illustrating an example of a configuration of an electronic device according to another embodiment of the present disclosure;

[0039] FIG20 is a block diagram illustrating an example of a configuration of an electronic device according to yet another embodiment of the present disclosure;

[0040] 21 is a flowchart illustrating a wireless communication method performed by an electronic device according to an embodiment of the present disclosure;

[0041] 22 is a flowchart illustrating a wireless communication method performed by an electronic device according to another embodiment of the present disclosure;

[0042] 23 is a flowchart illustrating a wireless communication method performed by an electronic device according to yet another embodiment of the present disclosure;

[0043] FIG24 is a block diagram illustrating a first example of a schematic configuration of a gNB;

[0044] FIG25 is a block diagram illustrating a second example of a schematic configuration of a gNB;

[0045] FIG26 is a block diagram showing an example of a schematic configuration of a smartphone; and

[0046] FIG. 27 is a block diagram showing an example of a schematic configuration of a car navigation device.

[0047] While the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example 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 disclosure to the particular forms disclosed, but rather, the disclosure is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the disclosure. It should be noted that throughout the several drawings, corresponding reference numerals indicate corresponding parts. DETAILED DESCRIPTION

[0048] 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.

[0049] Example embodiments are provided so that the present disclosure will be exhaustive and will fully convey its scope 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 specific details need not be used and that the example embodiments can be implemented in many different forms, none of which should be construed as limiting the scope of the present disclosure. In some example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

[0050] The description will be in the following order:

[0051] Overview;

[0052] Configuration examples of electronic devices;

[0053] 2.1 Switching scenes;

[0054] 2.2 Interference scenarios;

[0055] 2.3 Joint transmission scenario;

[0056] 2.4 Preprocessing operations;

[0057] 2.5 Modified embodiment;

[0058] 3. Method embodiment;

[0059] 4. Application examples.

[0060] <1. Overview>

[0061] As mentioned above, in coordinated beamforming, in order to reduce or avoid interference, it is necessary to adjust the beam direction of the user equipment within the coordinated base station, which has a certain impact on the communication quality of the user equipment. In joint transmission, since user equipment data needs to be exchanged between the serving base station and the coordinated base station, the burden on the backhaul link is increased and the latency is increased. The present disclosure aims to solve at least one of the above technical problems by combining multi-point coordination technology with RIS technology. In addition, after the introduction of RIS, how to maintain the reflection link to ensure communication quality in the event of a cell handover is also one of the technical problems that the present disclosure aims to solve.

[0062] The present disclosure proposes an electronic device in a wireless communication system, a wireless communication method performed by the electronic device in the wireless communication system, and a computer-readable storage medium. The electronic device combines multi-point coordination technology with RIS technology to reduce or avoid inter-cell interference without affecting the communication quality of user equipment, reduce the burden on cooperative base stations due to joint transmission, and maintain reflection links even in the event of cell switching.

[0063] The wireless communication system according to the present disclosure may be a 5G NR communication system or a higher-level communication system in the future.

[0064] According to the present disclosure, the electronic device used on the base station side may be, for example, an eNB or a gNB.

[0065] The user equipment according to the present disclosure may be a mobile terminal (such as a smartphone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle-type mobile router, and a digital camera) or an in-vehicle 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 known 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 terminals.

[0066] The smart surface according to the present disclosure can be installed on the surface of a fixed object such as a building, or on a mobile object such as an unmanned aerial vehicle (UAV). In addition, the smart surface can be connected to the electronic equipment on the base station side by wired or wireless means. The smart surface can receive the signal from the transmitter and reflect it to the receiver. In addition, when the smart surface is installed on a transparent surface such as glass, the smart surface can also receive the signal from the transmitter and transmit it to the receiver. That is, the sender and the receiver can be located on the same side of the smart surface, or on different sides of the smart surface.

[0067] Furthermore, the electronic device and user equipment used on the base station side according to the present disclosure may have a beamforming capability, that is, may use beams to send and receive information.

[0068] In addition, in the present disclosure, a direct link means a direct link between a base station device and a user device, which may include an uplink and a downlink. A reflection link means an indirect link between a base station device, an intelligent surface and a user device, which may also include an uplink and a downlink. The expressions "reflection link between a base station and an intelligent surface" and "reflection link between an intelligent surface and a user device" in the present disclosure also mean the above-mentioned indirect link between a base station device, an intelligent surface and a user device. Further, in the present disclosure, a reflection link beam direction may include the beam direction of the intelligent surface in the reflection link and the beam direction of the user device in the reflection link, which may be a transmitting beam direction or a receiving beam direction.

[0069] The following describes embodiments of the present disclosure in detail using the example of a sender and receiver located on the same side of a smart surface. However, embodiments of the present disclosure are also applicable to scenarios where the sender and receiver are located on different sides of the smart surface. In such scenarios, the indirect link from base station to smart surface to user equipment can be referred to as a transmissive link.

[0070] <2. Configuration Example of Electronic Equipment>

[0071] 2 is a block diagram illustrating an example of a configuration of an electronic device 200 according to an embodiment of the present disclosure. The electronic device 200 may serve as a base station device in a wireless communication system.

[0072] Here, each unit of the electronic device 200 may be included in a processing circuit. It should be noted that the electronic device 200 may include either one processing circuit or multiple processing circuits. Furthermore, 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.

[0073] The configuration of the electronic device 200 will be described in detail below with respect to a switching scenario, an interference scenario, and a joint transmission scenario.

[0074] <2.1 Switching Scene>

[0075] Figure 1 is a schematic diagram illustrating a cell handover scenario according to an embodiment of the present disclosure. As shown in Figure 1, a UE (User Equipment) is served by a serving gNB and a smart surface. At some point, the UE moves into the service area of ​​a target gNB, resulting in an A3 event. In this scenario, if the UE switches to a cell served by the target gNB, the UE will be disconnected from the smart surface. If the target gNB reallocates the smart surface and reestablishes a reflective link after the UE switches to the cell served by the target gNB, the reflective link will remain disconnected for a long time, affecting the UE's communication quality.

[0076] According to an embodiment of the present disclosure, as shown in FIG. 2 , the electronic device 200 may include an information generating unit 210 and a communication unit 220 .

[0077] According to an embodiment of the present disclosure, the information generation unit 210 can generate a variety of information so that the electronic device 200 can use the generated information to perform other processing or send the generated information to other devices. In addition, the electronic device 200 can send information to other devices and / or receive information from other devices through the communication unit 220.

[0078] According to an embodiment of the present disclosure, the information generation unit 210 may generate a handover request. Here, the handover request may include information of a smart surface that provides services to user devices within a service range of the electronic device 200.

[0079] According to an embodiment of the present disclosure, the electronic device 200 may send the handover request generated by the information generation unit 210 to the target base station device of the user equipment, so that the smart surface continues to provide services to the user equipment after the user equipment is handed over to the target base station device.

[0080] As can be seen, according to the embodiments of the present disclosure, the handover request sent to the target base station device may include information about the smart surface providing services to the user equipment. This allows the target base station device to know the smart surface information in advance, allowing it to establish a reflection link at the same time as the user equipment is handed over to the target base station device, ensuring that the services provided by the smart surface to the user equipment are not interrupted.

[0081] According to an embodiment of the present disclosure, when an A3 event is satisfied, the information generation unit 210 may generate a handover request including information about the smart surface. Here, any method known in the art may be used to determine whether an A3 event is satisfied, and this disclosure is not limited thereto. Furthermore, any method known in the art may be used to determine a target base station device for a user equipment, and this disclosure is not limited thereto either.

[0082] According to an embodiment of the present disclosure, the electronic device 200 can determine whether to include the information of the smart surface in the handover request based on the location of the smart surface and the location of the target base station device. For example, when the smart surface is close to the target base station device (the distance between the smart surface and the target base station device is less than a predetermined threshold, or the minimum distance between the smart surface and the boundary of the service range of the target base station device is less than a predetermined threshold), the electronic device 200 can determine that the original smart surface can still provide services to the user equipment after the user equipment is switched to the target base station device, and therefore the information of the smart surface can be included in the handover request.

[0083] According to embodiments of the present disclosure, smart surface information may include an identifier, such as an ID, of the smart surface. This allows the target base station to learn about the smart surface providing services to the user equipment. The target base station can then configure the smart surface to perform reflection link beam scanning to determine the beam direction of the smart surface and the user equipment in the reflection link, thereby enabling the smart surface to continue providing services to the user equipment.

[0084] According to an embodiment of the present disclosure, the information of the smart surface may further include information related to the reflection direction of the smart surface. Here, the reflection coefficient of the smart surface may be used to represent the reflection direction of the smart surface, or the beam information of the smart surface in the reflection link (including but not limited to CRI (CSI-RS Resource Indicator, CSI Reference Signal Resource Indicator)) may be used to represent the reflection direction of the smart surface. In this way, the target base station device does not need to configure the smart surface for reflection link beam scanning, and can directly use the reflection direction determined according to the handover request to configure the smart surface.

[0085] According to an embodiment of the present disclosure, the electronic device 200 can determine the reflection direction of the smart surface by configuring the smart surface to perform a reflection link beam scanning process. For example, the information generation unit 210 can generate measurement control information for the reflection link beam scanning process, and the electronic device 200 can send the measurement control information to the user equipment through the communication unit 220, so that the user equipment can measure the quality of each beam reflected by the smart surface and report the beam direction with the best quality. The measurement control information includes, for example, the configuration of the CSI-RS resources for the smart surface.

[0086] According to an embodiment of the present disclosure, the electronic device 200 may further include a configuration unit 230 for configuring the smart surface, including but not limited to configuring the reflection coefficient of the smart surface, so that the smart surface can transmit or receive data according to the beam direction configured by the configuration unit 230. Furthermore, the configuration unit 230 may configure the smart surface to perform a reflective link beam scanning process. In other words, the smart surface may reflect the CSI-RS to the user equipment through various beams under the configuration of the configuration unit 230.

[0087] According to an embodiment of the present disclosure, as shown in FIG2 , the electronic device 200 may further include a reflection direction determination unit 240 for determining the reflection direction of the smart surface based on beam information reported by the user equipment, where the beam information may reflect the direction of the best quality beam measured by the user equipment.

[0088] According to an embodiment of the present disclosure, as shown in FIG2 , the electronic device 200 may further include a prediction unit 250 for predicting the direction of the reflection link beam between the user device and the smart surface based on the position and motion information of the user device, so that the information generation unit 210 can generate measurement control information based on the predicted reflection link beam direction of the user device. Here, the motion information may include the direction of motion and the speed of motion. That is, the prediction unit 250 can predict the position of the user device in a certain period of time in the future based on the position, direction of motion and speed of motion of the user device, thereby predicting the direction of the beam that the user device may use. Therefore, when configuring the reflection link beam scanning process, the electronic device 200 can configure partial beam scanning instead of configuring omnidirectional beam scanning. In other words, the user device can measure the signal quality only on part of the beam. In this way, the time for the reflection link beam scanning can be reduced.

[0089] As described above, since the user equipment is in motion, determining the reflection direction of the smart surface through the reflection link beam scanning process can more accurately determine the reflection direction of the smart surface, so that the user equipment can continue to be served by the smart surface after switching to the service range of the target base station device and obtain better service quality.

[0090] The electronic device 200 can determine whether to determine the reflection direction of the smart surface through the reflection link beam scanning process based on the movement speed of the user device. For example, if the user device is moving at a relatively fast speed, the electronic device 200 can determine the reflection direction of the smart surface through the reflection link beam scanning process as described above. If the user device is moving at a relatively slow speed, the electronic device 200 can also not perform the reflection link beam scanning process, but directly include the current reflection direction of the smart surface in the handover request, thereby reducing signaling overhead.

[0091] According to an embodiment of the present disclosure, after electronic device 200 sends a handover request, a handover response can be received from the target base station. Furthermore, electronic device 200 can send RRC connection reconfiguration information to the user equipment via communication unit 220, so that after the user equipment successfully accesses the target base station, it sends RRC connection reconfiguration completion information to the target base station. As a result, the user equipment successfully switches to the target base station and successfully establishes a reflective link.

[0092] Figure 3 is a schematic diagram illustrating a scenario in which a user equipment (UE) is still served by a smart surface after being handed over to a target gNB. In Figures 1 and 3, the serving gNB may be implemented by electronic device 200. As shown in Figure 3, after the UE is handed over to the target gNB, the UE can still be served by the original smart surface.

[0093] Figure 4 is a signaling flow chart showing the application of an embodiment of the present disclosure in a cell handover scenario. In Figure 4, the serving base station can be implemented by an electronic device 200, and the UE is served by the serving base station and one or more RISs, and is about to be handed over to the target base station. As shown in Figure 4, in step S401, the serving base station sends measurement configuration information to the UE to configure the UE to perform corresponding measurements. The measurement configuration information includes the measurement configuration of the current serving cell, the adjacent cell, and the optional measurement configuration of the RIS. In step S402, the serving base station controls the RIS to perform a reflection link beam scanning process, for example, configuring the RIS with reference signal resources for reflection link beam scanning for the RIS to be used for the UE to measure the quality of the reflection link beam. In step S403, the UE reports the RIS beam with the best quality. In step S404, based on the measurement report containing the A3 event sent by the UE, the serving base station makes a handover decision for the UE and sends a handover request (HANDOVER REQUEST) to the target base station to which the target cell belongs, so that the target base station can prepare for the handover. The handover request message includes information about the RIS currently serving the UE and / or information about recommended candidate RISs that can serve the UE after the handover. Specifically, the RIS information includes, for example, one or more of the RIS ID, the geographic location of the RIS (e.g., latitude, longitude, altitude), the surface orientation of the RIS (e.g., angle with the ground), and the optimal beam information for the RIS to serve the UE. In some embodiments, information about the RIS deployed in the network has been configured to each base station via OAM. Only the RIS ID is exchanged between the source base station and the target base station. The corresponding receiving base station can obtain detailed parameters such as the geographic location and supported beam directions of the corresponding RIS by querying pre-configured information. In step S405, the target base station determines candidate RISs based on the handover request message and, based on its own location information and the parameters of the candidate RISs, determines one or more RISs to be adopted. After completing handover preparation, the target base station sends a handover request response (HANDOVER REQUEST ACKNOWLEDGE) containing an RRC message to assist the UE in performing handover to the serving base station. This RRC message contains information about the one or more RISs to be adopted by the target base station to serve the UE, such as the RIS ID, RIS beam, and geographic location. In step S406, the serving base station includes the RRC message content from the target base station in RRC reconfiguration information (e.g., RRCReconfiguration) sent to the UE to trigger handover. The RRC reconfiguration information may include a set of dedicated random access resources, some of which are associated with the RISs to be adopted. The RRC reconfiguration information also includes the association between the random access resources and specific RISs to assist the UE in randomly accessing the target cell via the RIS.In step S407, the UE determines the RIS to be adopted by the target base station and the location of the RIS based on the RRC reconfiguration information. Based on its own location and the location of the RIS, it estimates a beam direction that matches the reflection link. The UE then uses the associated dedicated random access resources to send a random access preamble in that beam direction, so that the preamble is transmitted to the target base station via the reflection link of the RIS. Optionally, if the RIS to be adopted by the target base station is consistent with the current serving RIS, the UE directly uses the beam of the current RIS to send the random access preamble. Furthermore, another portion of dedicated random access resources may be associated with the target cell's SSB and / or UE-specific CSI-RS configuration. While sending the random access preamble via the reflection link of the RIS, the UE also directly sends the random access preamble to the target base station using another portion of dedicated random access resources and the corresponding SSB or CSI-RS beam direction. After the UE accesses the target base station, it sends RRC reconfiguration completion information, such as an RRCReconfigurationComplete message, to the target base station. This establishes a reflection link upon accessing the target base station, and the reflection link improves the success rate of random access and reduces handover latency. In Figure 4 , steps S401 through S403 are not mandatory; the source serving base station can independently make a handover decision. Furthermore, steps S401 through S403 can be performed periodically. That is, the serving base station can periodically determine the RIS reflection direction through a reflection link beam scanning process, so that the handover request can include the most recently determined reflection direction. Alternatively, steps S401 through S403 can be performed simultaneously with or after step S404.

[0094] As described above, according to an embodiment of the present disclosure, a switching request including information about a smart surface providing services to a user equipment can be transmitted through an Xn interface between base station devices, for example, between gNBs. In this way, the target base station device can know the information about the smart surface in advance, so that a reflection link can be established before or at the same time as the user equipment switches to the target base station device, so that the service provided by the smart surface of the user equipment is not interrupted. Furthermore, the information about the smart surface can include information related to the reflection direction of the smart surface, so that the target base station device can directly use the reflection direction determined according to the switching request to configure the smart surface, thereby saving time for reflection link suggestion. In addition, the electronic device can determine the reflection direction of the smart surface through a reflection link beam scanning process, so that the reflection direction of the smart surface can be determined more accurately. In short, in a switching scenario, by applying the embodiments of the present disclosure, the reflection link can be maintained after the switching is completed.

[0095] <2.2 Interference Scenarios>

[0096] Figure 5 is a schematic diagram illustrating an interference scenario according to an embodiment of the present disclosure. As shown in Figure 5, User 1 is within the service range of a serving base station, while User 2 is within the service range of a neighboring base station. Both User 1 and User 2 are located at the edge of their service ranges and are relatively close to each other. The serving base station transmits a downlink signal to User 1, while the neighboring base station transmits a downlink signal to User 2. The downlink signal transmitted by the neighboring base station to User 2 may be received by User 1, thereby causing interference to User 1.

[0097] As mentioned above, in order to reduce or avoid interference in collaborative beamforming, in the case shown in Figure 5, the beam direction of the downlink signal sent by the adjacent base station to user 2 may be adjusted, thereby having a certain impact on the communication quality of user 2.

[0098] According to an embodiment of the present disclosure, as shown in FIG2 , the electronic device 200 may further include an interference determination unit 260 for determining whether the transmission between the electronic device 200 and the user equipment is interfered with by the transmission between the adjacent base station device and other user equipment served by the adjacent base station device.

[0099] According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface so that the electronic device 200 can perform data transmission with the user device through the assistance of the smart surface.

[0100] According to an embodiment of the present disclosure, in the case of downlink interference, the interference determination unit 260 can determine whether the downlink transmission between the electronic device 200 and the user equipment is interfered with by the downlink transmission between the adjacent base station device and the other user equipment based on the direction of the downlink receiving beam of the user equipment, the position of the user equipment, the direction of the downlink receiving beam of other user equipment and the position of other user equipment.

[0101] Here, the electronic device 200 can receive the direction of the downlink receive beam of other user equipment and the position of other user equipment from the adjacent base station device through the communication unit 220. According to an embodiment of the present disclosure, one or more adjacent base station devices of the serving base station can send the positions and the direction of the downlink receive beam of all user equipment or specific user equipment (such as the collaborative users described later) within its service range to the electronic device 200. Thus, the interference determination unit 260 can determine whether there is an interfered user equipment based on the positions and the direction of the downlink receive beam of these user equipment, and the positions and the direction of the downlink receive beam of the user equipment within the service range of the electronic device 200. Conversely, the electronic device 200 can also send the positions and the direction of the downlink receive beam of all user equipment or specific user equipment (such as the collaborative users described later) within its service range to the adjacent base station device, so that the adjacent base station device can determine whether there is an interfered user equipment.

[0102] Figure 6 is a schematic diagram illustrating a scenario where a smart surface provides service to user 1 when user 1 is experiencing interference. In Figure 6, the serving base station can be implemented by electronic device 200. As shown in Figure 6, if the serving base station determines that a downlink signal transmitted by a neighboring base station to user 2 is interfering with user 1, the serving base station can configure the smart surface to transmit the downlink signal to user 1 via a reflective link from the serving base station to the smart surface to user 1. This eliminates the need to change the beam direction of user 2 and reduces or prevents interference to user 1.

[0103] According to an embodiment of the present disclosure, the electronic device 200 may determine a smart surface that provides services to the user device based on the location of the user device and the locations of all smart surfaces within the service range of the electronic device 200. For example, the electronic device 200 may determine the smart surface closest to the user device as the smart surface that provides services to the user device.

[0104] According to an embodiment of the present disclosure, the electronic device 200 can configure the smart surface to perform a reflection link beam scanning process (reflection link downlink beam scanning process) to determine the reflection link beam direction of the smart surface and the reflection link beam direction of the user equipment. This process is similar to the reflection link beam scanning process described in the switching scenario. That is, the information generation unit 210 can generate measurement control information for the reflection link beam scanning and the electronic device 200 can send the measurement control information to the user equipment through the communication unit 220, so that the user equipment can measure the quality of each beam reflected by the smart surface and report the beam direction with the best quality. The configuration unit 230 can configure the smart surface to perform the reflection link beam scanning process. That is, the smart surface can reflect the CSI-RS to the user equipment through each beam under the configuration of the configuration unit 230. In addition, the reflection direction determination unit 240 can determine the reflection direction of the smart surface based on the beam information reported by the user equipment, and the beam information can reflect the direction of the beam with the best quality measured by the user equipment.

[0105] According to embodiments of the present disclosure, a smart surface may be transparent to a user device (transparent smart surface), meaning the user device is unaware of the smart surface. Alternatively, a smart surface may be opaque to the user device (non-transparent smart surface), meaning the user device is aware of the smart surface.

[0106] According to an embodiment of the present disclosure, in the case of a non-transparent smart surface, the electronic device 200 can send an identification of the smart surface, such as an ID, to the user device through the communication unit 220. Optionally, the electronic device 200 can also send the location of the smart surface to the user device, so that the user device can determine the approximate beam direction based on the location of the smart surface to save beam scanning time. In the case of a transparent smart surface, the electronic device 200 can configure the smart surface to perform a reflection link uplink beam scanning process to determine the reflection link beam direction (the beam direction of the smart surface and the beam direction of the user device). Here, the electronic device 200 can carry the identification of the smart surface or the location of the smart surface through high-layer signaling such as RRC or low-layer signaling such as DCI.

[0107] Through the above process, electronic device 200 determines the smart surface for the user device and the beam direction of the smart surface and the beam direction of the user device in the reflection link. This process can be performed each time electronic device 200 needs to configure a smart surface for the user device, or it can be performed immediately after the user device is connected to electronic device 200. In the latter case, when electronic device 200 needs to configure the smart surface for the user device, it can directly use the existing configuration results, thus saving time.

[0108] According to an embodiment of the present disclosure, when the interference determination unit 260 determines that the user equipment is subject to interference and the configuration unit 230 configures the smart surface, the electronic device 200 can send the identifier of the smart surface (in the case of a non-transparent smart surface) or the direction of the downlink receiving beam of the user equipment (in the case of a transparent smart surface) to the user equipment through the communication unit 220, so that the user equipment receives downlink information through the smart surface.

[0109] In addition, according to an embodiment of the present disclosure, in response to load information received from a neighboring base station device, the configuration unit 230 may also configure a smart surface for transmission. Here, the load information of the neighboring base station reflects that the service of the neighboring base station is subject to excessive interference. That is, if the transmission between the neighboring base station and other user devices within the service range of the neighboring base station is interfered with by the transmission between the electronic device 200 and the user device, the electronic device 200 may also configure a smart surface for the user device so that the smart surface can provide services to the user device.

[0110] Figure 7 is a signaling flow chart illustrating the application of an embodiment of the present disclosure in an interference scenario. In Figure 7, the serving base station can be implemented by an electronic device 200. User 1 is within the service range of the serving base station, and user 2 is within the service range of a neighboring base station. As shown in Figure 7, in step S701, the neighboring base station sends the location and beam direction of user 2 to the serving base station. In step S702, the serving base station determines that the transmission between the neighboring base station and user 2 interferes with the transmission between the serving base station and user 1. In step S703, the serving base station determines a smart surface for user 1 and configures the smart surface to perform reflection link beam scanning to determine the beam direction of the smart surface in the reflection link and the beam direction of the user device. In step S704, the serving base station sends the ID of the smart surface configured for user 1 (non-transparent smart surface) or the direction of the downlink receive beam of user 1 (transparent smart surface) to user 1. In step S705, the serving base station sends smart surface configuration information to the RIS to configure the RIS to use the beam direction of the smart surface in the reflection link to send information to user 1. Thus, the serving base station can perform data transmission with user 1 through the reflection link.

[0111] Figure 8 is a signaling flow chart illustrating the determination of the reflection link beam direction in the case of a non-transparent smart surface according to an embodiment of the present disclosure. That is, Figure 8 illustrates the signaling flow of step S703 in Figure 7 in the case of a non-transparent smart surface. In Figure 8, the base station may be implemented by the electronic device 200. In step S801, the base station determines the RIS for the UE. In step S802, the base station transmits the ID of the determined RIS and the CSI-RS resource configuration information for the reflection link downlink beam scanning process for the specific RIS to the UE. In step S803, the base station transmits configuration information for executing the reflection link downlink beam scanning process to the RIS. In step S804, the RIS executes the reflection link downlink beam scanning process under the control of the base station. In step S805, the UE reports the best quality beam to the base station. Thus, the base station can determine the beam direction of the smart surface in the reflection link.

[0112] Figure 9 is a signaling flow chart illustrating the determination of the direction of a reflection link beam in the case of a transparent smart surface according to an embodiment of the present disclosure. Specifically, Figure 9 illustrates the signaling flow of step S703 in Figure 7 in the case of a transparent smart surface. In Figure 9 , the base station may be implemented by electronic device 200. In step S901, the base station determines a RIS for the UE. In step S902, the base station transmits CSI-RS resource configuration information for the reflection link downlink beam scanning process for a specific RIS to the UE. In step S903, the base station transmits configuration information for executing the reflection link downlink beam scanning process to the RIS. In step S904, the RIS executes the reflection link downlink beam scanning process under the control of the base station. In step S905, the UE reports the beam with the best quality to the base station. In step S906, the base station transmits SRS resource configuration information for the reflection link uplink beam scanning process to the UE. In step S907, the UE executes the reflection link uplink beam scanning process. Thereby, the base station determines the beam direction of the reflection link, that is, the beam direction of the smart surface in the reflection link and the beam direction of the user equipment in the reflection link.

[0113] It should be noted that although the operation of the electronic device 200 in the case of downlink interference is described in detail, the operation is also applicable to uplink interference.

[0114] As described above, according to an embodiment of the present disclosure, information such as the location and beam direction of the user equipment can be transmitted through the Xn interface between the base station devices to determine inter-cell interference. In the case where the transmission between the electronic device 200 and the user equipment is interfered with by the transmission between the adjacent base station device and other user equipment, the electronic device 200 can configure a smart surface to perform transmission with the user equipment through a reflection link. In this way, there is no need to change the beam direction between the adjacent base station device and other user equipment, and the communication quality of other user equipment will not be affected. In other words, inter-cell interference can be reduced or avoided without affecting the communication quality of other user equipment. In addition, in known standards and technologies, smart surfaces are used to solve the technical problem of coverage blind spots. In the present disclosure, smart surfaces can reduce or avoid inter-cell interference, thereby improving communication quality.

[0115] <2.3 Joint Transmission Scenario>

[0116] Figure 10 is a schematic diagram illustrating a scenario in which a neighboring base station device is overloaded according to an embodiment of the present disclosure. As shown in Figure 10, a UE is located within the service range of a serving base station. The serving base station and the neighboring base station simultaneously transmit downlink data between the serving base station and the UE to the UE, or the UE simultaneously transmits uplink data between the UE and the serving base station to the serving base station and the neighboring base station. This technology is called joint transmission. In this case, the neighboring base station may be unable to provide joint transmission services to UEs within the service range of the serving base station due to excessive load or interference.

[0117] According to an embodiment of the present disclosure, as shown in FIG2 , the electronic device 200 may further include a policy determination unit 270 for determining a transmission policy for joint transmission. For example, when a neighboring base station can no longer provide joint transmission services for a user, the policy determination unit 270 may determine that a smart surface provides the joint transmission services for the user.

[0118] In this case, the configuration unit 230 may configure the smart surface so that data between the electronic device 200 and the user equipment is transmitted via a reflective link between the smart surface and the user equipment and a direct link between the electronic device 200 and the user equipment, respectively.

[0119] As described above, according to the embodiments of the present disclosure, when adjacent base stations are unable to provide joint transmission services for user equipment, intelligent surfaces can provide joint transmission services for the user equipment. This reduces the burden on adjacent base stations and reduces signaling transmission on the Xn interface between base stations.

[0120] According to an embodiment of the present disclosure, the electronic device 200 can receive load information from a neighboring base station device through the communication unit 220. The load information reflects whether the service of the neighboring base station is subject to excessive interference and / or traffic overload. In other words, when the service of the neighboring base station is subject to excessive interference and / or the traffic of the neighboring base station is overloaded, the neighboring base station can send the load information to the electronic device 200. In this way, the policy determination unit 270 can configure a smart surface for the user equipment provided with the joint transmission service by the neighboring base station device so that transmission is performed via the reflection link.

[0121] According to an embodiment of the present disclosure, there may be one or more user devices for which a joint transmission service is provided by the adjacent base station device. The policy determination unit 270 can configure a smart surface for all of these user devices, or it can determine whether to configure a smart surface for each user device based on the data transmission requirements between the electronic device 200 and each user device. In other words, the policy determination unit 270 can configure a smart surface for all or some of the user devices for which a joint transmission service is provided by the adjacent base station device, while the remaining user devices still receive joint transmission services from the adjacent base station device.

[0122] According to an embodiment of the present disclosure, when the data between the electronic device 200 and the user device has a high rate requirement, and / or when the amount of data between the electronic device 200 and the user device is large, the policy determination unit 270 can determine to configure a smart surface for the user device. For example, when the user device is in a scenario such as gaming, XR, live broadcasting, watching high-definition video, etc., the rate requirement for uplink transmission and / or downlink transmission is very high and the amount of data is large. In this case, a smart surface can be configured for the corresponding user device. According to an embodiment of the present disclosure, the policy determination unit 270 can determine the data transmission requirements based on the cache status and QoS of the user device.

[0123] According to an embodiment of the present disclosure, the embodiment described in the interference scenario can be used to configure a smart surface for a user device and determine the beam direction of the user device and the beam direction of the smart surface in the reflection link. This disclosure will not be repeated here. In addition, after the policy determination unit 270 determines that the smart surface provides services for the user device, the electronic device 200 can send at least one of the following to the user device: an identifier of the smart surface (non-transparent smart surface) and the reflection link beam direction of the user device (smart surface).

[0124] According to an embodiment of the present disclosure, the reflection link between the smart surface and the user device, and the direct link between the electronic device 200 and the user device can be used to transmit different data streams, respectively. Here, the reflection link and the direct link can each transmit one data stream, or can transmit multiple data streams, and there may be no overlap between the data streams transmitted by the reflection link and the direct link. For example, when the user device is in an XR scene, both uplink and downlink transmissions involve multiple data streams. Taking the AR scene as an example, the downlink transmission can include two streams of data, one stream is an I frame data stream, and the other stream is a P frame data stream. There are four models for uplink transmission in the AR scene, namely: Model 1: one stream model (Model 1: one stream model); Model 2: two streams model (Model 2: Two streams model); Model 3A: three streams model A (Model 3A: Three streams model A); Model 3B: three streams model B (Model 3B: Three streams model B). In this case, for downlink transmission, the electronic device 200 can configure the direct link to transmit an I-frame data stream and the reflection link to transmit a P-frame data stream, or the electronic device 200 can configure the direct link to transmit a P-frame data stream and the reflection link to transmit an I-frame data stream. For uplink transmission model 3A, the electronic device 200 can configure the direct link to transmit one of the three data streams and the reflection link to transmit the remaining two data streams. Furthermore, the electronic device 200 can determine which link to use to transmit which stream based on the QoS requirements of each data stream and the link quality of the reflection link and the direct link, so that the QoS requirements match the link quality, that is, the link with better link quality is used to transmit the data stream with higher QoS requirements.

[0125] According to an embodiment of the present disclosure, the reflection link between the smart surface and the user equipment, and the direct link between the electronic device 200 and the user equipment can also be used to transmit the same data stream. Here, the direct link and the reflection link can transmit the same data stream, or they can transmit the same multiple data streams. For example, for downlink transmission, the electronic device 200 can configure the direct link to transmit an I-frame data stream and a P-frame data stream, and the reflection link to also transmit an I-frame data stream and a P-frame data stream. For uplink transmission model 1, both the direct link and the reflection link can transmit this one data stream. In this way, all data streams can have spatial division gain.

[0126] According to an embodiment of the present disclosure, the data streams transmitted by the reflection link between the smart surface and the user device and the data streams transmitted by the direct link between the electronic device 200 and the user device can partially overlap. For example, the electronic device 200 can configure the direct link to transmit all data streams, and the reflection link to transmit the more important data stream or streams among all the data streams. For example, for uplink transmission model 3A, the electronic device 200 can configure the direct link to transmit three streams, and the reflection link to transmit the more important two of the three data streams. In this way, the more important data streams can obtain space division gain, while improving resource utilization.

[0127] As described above, both the direct link and the reflection link can transmit one or more streams, and the streams transmitted by the direct link and the streams transmitted by the reflection link can be completely overlapped, partially overlapped, or not overlapped.

[0128] Figure 11 is a schematic diagram illustrating a scenario where a UE is served by a smart surface when a neighboring base station is overloaded. In Figure 11, the serving base station may be implemented by an electronic device 200. As shown in Figure 11, when a neighboring base station is overloaded, the smart surface provides joint transmission services for the UE.

[0129] Figure 12 is a signaling flow chart illustrating the application of an embodiment of the present disclosure in a downlink scenario where a neighboring base station device is overloaded, and Figure 13 is a signaling flow chart illustrating the application of an embodiment of the present disclosure in an uplink scenario where a neighboring base station device is overloaded. In Figures 12 and 13, the serving base station may be implemented by electronic device 200, and the UE is provided with a joint transmission service by the serving base station and the neighboring base station.

[0130] As shown in Figure 12, in step S1201, a neighboring base station determines downlink overload, such as excessive load or interference. In step S1202, the neighboring base station sends load information to the serving base station, indicating that the neighboring base station can no longer provide joint transmission services. In step S1203, the serving base station determines the UE that needs to switch to transmission via a reflection link. In step S1204, for the UE determined in step S1203, the serving base station determines the RIS and configures the RIS to perform a reflection link beam scanning process to determine the reflection link beam direction. Step S1204 can be implemented in a manner similar to step S703 in Figure 7. In step S1205, the serving base station sends configuration information to the smart surface to control the smart surface to provide joint transmission services for the UE. In step S1206, the serving base station sends the smart surface ID or the UE's downlink receive beam direction to the UE. As a result, the UE changes from being served by the direct link between the serving base station and the UE and the direct link between the neighboring base station and the UE to being served by the direct link between the serving base station and the UE and the reflection link between the serving base station, the smart surface, and the UE.

[0131] As shown in Figure 13, in step S1301, the adjacent base station determines that the uplink is overloaded, for example, the load is too large or the interference is too large. In step S1302, the adjacent base station sends load information to the serving base station, indicating that the adjacent base station can no longer provide joint transmission services. In step S1303, the serving base station determines the UE that needs to be transmitted through the reflection link. In step S1304, for the UE determined in step S1303, the serving base station determines the RIS and configures the RIS to perform a reflection link beam scanning process to determine the reflection link beam direction. Step S1304 can be implemented in a manner similar to step S703 in Figure 7. In step S1305, the serving base station sends configuration information to the smart surface to control the smart surface to provide joint transmission services for the UE. In step S1306, the serving base station sends the ID of the smart surface or the direction of the UE's downlink receive beam and the TA (Time Advance) of the reflection link to the UE. As a result, the UE is changed from being served by the direct link between the serving base station and the UE and the direct link between the neighboring base station and the UE to being served by the direct link between the serving base station and the UE and the reflection link of the serving base station-smart surface-UE.

[0132] As described above, according to the embodiments of the present disclosure, load information can be transmitted via the Xn interface between base station devices. That is, when adjacent base station devices are unable to provide joint transmission services for user equipment, the smart surface can provide joint transmission services for the user equipment. This can reduce the burden on adjacent base station devices and reduce signaling transmission on the Xn interface between base station devices. In addition, the electronic device 200 can determine which user equipment needs to be changed to receive joint transmission services via the reflection link based on data transmission requirements. Furthermore, the electronic device 200 can also configure the data streams transmitted on the reflection link and the direct link to achieve space division gain.

[0133] Figure 14 is a schematic diagram illustrating a scenario requiring joint transmission between neighboring base stations when a UE is served by a serving base station and a smart surface, according to an embodiment of the present disclosure. As shown in Figure 14 , the serving base station transmits data to and from the UE using both a direct link and a reflected link. In this scenario, the serving base station may find that data transmission using both the direct link and the reflected link still cannot meet data transmission requirements.

[0134] According to an embodiment of the present disclosure, the policy determination unit 270 may determine that it is necessary to request an adjacent base station device to jointly transmit data between the electronic device 200 and the user device. For example, the policy determination unit 270 may determine that it is necessary to request the adjacent base station device to jointly transmit data through a direct link between the adjacent base station device and the user device, or it may determine that it is necessary to request the adjacent base station device to jointly transmit data through a direct link between the adjacent base station device and the user device and a reflection link between the adjacent base station device and the smart surface.

[0135] According to an embodiment of the present disclosure, information generation unit 210 may generate request information to request a neighboring base station device to transmit data between electronic device 200 and user equipment via a direct link between the neighboring base station device and the user equipment. Furthermore, electronic device 200 may send the request information to the neighboring base station device via communication unit 220.

[0136] Here, the data between the electronic device 200 and the user equipment may include uplink data or downlink data. That is, when the electronic device 200 uses a direct link and a reflection link to transmit downlink data between the electronic device 200 and the user equipment, the electronic device 200 may request an adjacent base station device to jointly transmit the downlink data via the direct link between the adjacent base station device and the user equipment. When the user equipment uses a direct link and a reflection link to transmit uplink data between the electronic device 200 and the user equipment, the electronic device 200 may request an adjacent base station device to jointly transmit the uplink data via the direct link between the adjacent base station device and the user equipment.

[0137] According to an embodiment of the present disclosure, the information generation unit 210 may generate a link addition notification, which is used to notify the user device and the electronic device 200 that data between the electronic device 200 and the user device is transmitted via a direct link between the electronic device 200 and the user device, a direct link between an adjacent base station device and the user device, and a reflection link between the electronic device 200 and the smart surface. Furthermore, the electronic device 200 may send the link addition notification to the user device via the communication unit 220.

[0138] According to an embodiment of the present disclosure, the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device 200 and the smart surface can be used to transmit different data streams respectively; or the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device 200 and the smart surface can be used to transmit the same multiple data streams. That is, similar to the case of data streams transmitted by the direct link and the reflection link described above, the electronic device 200 can configure the data streams to be transmitted so that the data streams transmitted by the direct link between the electronic device 200 and the user equipment, the data streams transmitted by the direct link between the adjacent base station device and the user equipment, and the data streams transmitted by the reflection link between the electronic device 200 and the smart surface can be completely identical, partially overlap, or not overlap.

[0139] According to an embodiment of the present disclosure, the request information generated by the information generation unit 210 may also be used to request an adjacent base station device to transmit data between the electronic device 200 and the user device through a direct link between the adjacent base station device and the user device, and a reflection link between the adjacent base station device and the smart surface. Further, the link addition notification may also be used to notify the user device that the data between the user device and the electronic device 200 is transmitted through a direct link between the electronic device 200 and the user device, a direct link between the adjacent base station device and the user device, a reflection link between the electronic device 200 and the smart surface, and a reflection link between the adjacent base station device and the smart surface, respectively.

[0140] Here, the data between the electronic device 200 and the user equipment may include downlink data. That is, when the electronic device 200 transmits the downlink data between the electronic device 200 and the user equipment using a direct link and a reflected link, the electronic device 200 may request the adjacent base station device to jointly transmit the downlink data using the direct link between the adjacent base station device and the user equipment and the reflected link between the adjacent base station device and the smart surface.

[0141] According to an embodiment of the present disclosure, the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 200 and the smart surface, and the reflection link between the adjacent base station device and the smart surface can be used to transmit different data streams respectively; or the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 200 and the smart surface, and the reflection link between the adjacent base station device and the smart surface can be used to transmit the same multiple data streams. That is, similar to the case of data streams transmitted by the direct link and the reflection link described above, the electronic device 200 can configure the data streams to be transmitted so that the data streams transmitted by the direct link between the electronic device 200 and the user equipment, the data streams transmitted by the direct link between the adjacent base station device and the user equipment, the data streams transmitted by the reflection link between the electronic device 200 and the smart surface, and the data streams transmitted by the reflection link between the adjacent base station device and the smart surface can be completely identical, partially overlapped, or non-overlapped.

[0142] According to an embodiment of the present disclosure, the strategy determination unit 270 can determine whether to request joint transmission from an adjacent base station device based on the location of the smart surface. For example, when the smart surface is very close to the adjacent base station device (for example, the distance between the smart surface and the adjacent base station device is less than a predetermined threshold, or the minimum distance between the smart surface and the boundary of the coverage range of the adjacent base station device is less than a predetermined threshold), the strategy determination unit 270 can determine to request joint transmission from the adjacent base station device. In particular, when the smart surface is located at the junction of the service range of the electronic device 200 and the service range of the adjacent base station device, that is, when the smart surface is shared by the electronic device 200 and the adjacent base station device, the strategy determination unit 270 can determine to request joint transmission from the adjacent base station device.

[0143] According to an embodiment of the present disclosure, the electronic device 200 can negotiate with a neighboring base station device for control of the smart surface. If the electronic device 200 obtains control, the configuration unit 230 configures the smart surface. If the neighboring base station device obtains control, the neighboring base station device configures the smart surface.

[0144] According to an embodiment of the present disclosure, when the electronic device 200 obtains control authority and requests an adjacent base station device to transmit data between the electronic device 200 and a user device via a direct link between the adjacent base station device and the user device and a reflection link between the adjacent base station device and the smart surface, the electronic device 200 may receive the beam direction of the smart surface in the reflection link between the adjacent base station device and the smart surface from the adjacent base station device through the communication unit 220. Further, the configuration unit 230 may configure the smart surface based on the beam direction of the smart surface in the reflection link between the adjacent base station device and the smart surface and the beam direction of the smart surface in the reflection link between the electronic device 200 and the smart surface, so that the smart surface can reflect data from the electronic device 200 and data from the adjacent base station device.

[0145] According to an embodiment of the present disclosure, when an adjacent base station device obtains control, the electronic device 200 can send the beam direction of the smart surface in the reflection link between the electronic device 200 and the smart surface to the adjacent base station device through the communication unit 220, so that the adjacent base station device can use the information to configure the smart surface so that the smart surface can reflect data from the electronic device 200, or the adjacent base station device can configure the smart surface according to the beam direction of the smart surface in the reflection link between the adjacent base station device and the smart surface, and the beam direction of the smart surface in the reflection link between the electronic device 200 and the smart surface, so that the smart surface can reflect data from the electronic device 200 and data from the adjacent base station device.

[0146] Figure 15 is a schematic diagram illustrating a scenario in which neighboring base stations perform joint transmission in the downlink, when a UE is served by a serving base station and a smart surface. In Figure 15 , the serving base station can be implemented by electronic device 200. As shown in Figure 15 , in downlink transmission, the serving base station sends data to the UE via a direct link ① and a reflection link ②. Here, the smart surface is located at the intersection of the serving base station's service range and the neighboring base station's service range. The serving base station can request a neighboring base station to perform joint transmission via a direct link ③, or it can request a neighboring base station to perform joint transmission via a direct link ③ and a reflection link ④.

[0147] Figure 16 is a schematic diagram illustrating a scenario in which neighboring base stations perform joint transmission in the uplink, when a UE is served by a serving base station and a smart surface. In Figure 16 , the serving base station can be implemented by electronic device 200. As shown in Figure 16 , in uplink transmission, the UE sends data to the serving base station via direct link ① and reflected link ②. Here, the smart surface is located at the intersection of the serving base station's service range and the neighboring base station's service range. The serving base station can request a neighboring base station to perform joint transmission via direct link ③.

[0148] Figure 17 is a signaling flow diagram illustrating the application of an embodiment of the present disclosure in a downlink joint transmission scenario. In Figure 17 , the serving base station can be implemented by electronic device 200 , and the UE is served by the serving base station and the RIS. As shown in Figure 17 , in step S1701 , a neighboring base station and the serving base station negotiate control of the RIS serving the UE. In the first scenario, if the serving base station gains control, in step S1702 , the serving base station sends a request to the neighboring base station, requesting the neighboring base station to perform joint transmission via a direct link. In step S1703 , the serving base station sends configuration information to the RIS, enabling the RIS to reflect data from the serving base station. In step S1704 , the serving base station sends a link addition notification to the UE, notifying the UE that data is transmitted via the direct link between the serving base station and the UE, the direct link between the neighboring base station and the UE, and the reflected link between the serving base station and the RIS. In the second scenario, if the serving base station gains control, in step S1705 , the serving base station sends a request to the neighboring base station, requesting the neighboring base station to perform joint transmission via both the direct link and the reflected link. In step S1706, the neighboring base station sends the beam direction of the RIS in the reflection link between the neighboring base station and the RIS to the serving base station. In step S1707, the serving base station determines the configuration of the RIS based on the beam direction of the RIS in the reflection link between the neighboring base station and the RIS, and the beam direction of the RIS in the reflection link between the serving base station and the RIS, and sends configuration information to the RIS, causing the RIS to reflect data from the serving base station and the neighboring base station. In step S1708, the serving base station sends a link addition notification to the UE, notifying the UE that data is transmitted via the direct link between the serving base station and the UE, the direct link between the neighboring base station and the UE, the reflection link between the serving base station and the RIS, and the reflection link between the neighboring base station and the RIS. In the third case, if the neighboring base station gains control, in step S1709, the serving base station sends a request to the neighboring base station, requesting the neighboring base station to perform joint transmission via the direct link. In step S1710, the serving base station sends the beam direction of the RIS in the reflection link between the serving base station, the RIS, and the UE to the neighboring base station. In step S1711, the neighboring base station sends configuration information to the RIS, instructing it to reflect data from the serving base station. In step S1712, the serving base station sends a link addition notification to the UE, informing the UE that data is transmitted via the direct link between the serving base station and the UE, the direct link between the neighboring base station and the UE, and the reflected link between the serving base station and the RIS. In the fourth scenario, if the neighboring base station gains control, in step S1713, the serving base station sends a request to the neighboring base station, requesting it to perform joint transmission via the direct link and the reflected link.In step S1714, the serving base station transmits the beam direction of the RIS in the reflected link between the serving base station, the RIS, and the UE to the neighboring base station. In step S1715, the neighboring base station determines the configuration of the RIS based on the beam direction of the RIS in the reflected link between the neighboring base station, the RIS, and the UE, and transmits configuration information to the RIS to cause the RIS to reflect data from the serving base station and the neighboring base station. In step S1716, the serving base station transmits a link addition notification to the UE, notifying the UE that data is transmitted via the direct link between the serving base station and the UE, the direct link between the neighboring base station and the UE, the reflected link between the serving base station and the RIS, and the reflected link between the neighboring base station and the RIS.

[0149] Figure 18 is a signaling flow diagram illustrating the application of an embodiment of the present disclosure in an uplink joint transmission scenario. In Figure 18 , the serving base station can be implemented by electronic device 200, and the UE is served by the serving base station and the RIS. As shown in Figure 18 , in step S1801, a neighboring base station and the serving base station negotiate control of the RIS serving the UE. In the first scenario, if the serving base station gains control, in step S1802, the serving base station sends a request to the neighboring base station, requesting the neighboring base station to perform joint transmission via a direct link. In step S1803, the serving base station sends configuration information to the RIS, instructing the RIS to reflect data from the UE to the serving base station. In step S1804, the serving base station sends a link addition notification to the UE, informing the UE that data is transmitted via the direct link between the serving base station and the UE, the direct link between the neighboring base station and the UE, and the reflected link between the serving base station and the RIS. In step S1805, the serving base station sends a monitoring notification to the neighboring base station, instructing the neighboring base station to forward uplink data received from the UE to the serving base station for joint detection. The second case: When the neighboring base station obtains control, in step S1806, the serving base station sends a request message to the neighboring base station to request the neighboring base station to perform joint transmission via a direct link. In step S1807, the serving base station sends the beam direction of the RIS in the reflection link of the serving base station-RIS-UE to the neighboring base station. In step S1808, the neighboring base station sends configuration information to the RIS to enable the RIS to reflect the data from the UE to the serving base station. In step S1809, the serving base station sends a link addition notification to the UE to inform the UE that the data is transmitted via the direct link between the serving base station and the UE, the direct link between the neighboring base station and the UE, and the reflection link between the serving base station and the RIS. In step S1810, the serving base station sends a monitoring notification to the neighboring base station to enable the neighboring base station to forward the uplink data received from the UE to the serving base station for joint detection.

[0150] As described above, according to the embodiments of the present disclosure, a request for joint transmission can be transmitted through the Xn interface between base station devices. That is, when the user equipment is already served by the serving base station and the smart surface, if the data transmission requirements are still not met, the serving base station can request the neighboring base station to perform joint transmission, thereby increasing the transmission path and improving the diversity gain and security of information transmission. Furthermore, the serving base station can request the neighboring base station to perform joint transmission through a direct link, or request the neighboring base station to perform joint transmission through a direct link and a reflection link. In addition, when the smart surface is located at the intersection of the service range of the serving base station and the service range of the neighboring base station, the serving base station and the neighboring base station can negotiate control rights.

[0151] <2.4 Preprocessing Operations>

[0152] According to the embodiments of the present disclosure, the user equipment described above may be any user equipment within the service range of electronic device 200. That is, when any user equipment within the service range of electronic device 200 is in a handover scenario, operations may be performed according to the embodiments described in Section 2.1; when any user equipment within the service range of electronic device 200 is in an interference scenario, operations may be performed according to the embodiments described in Section 2.2; and when any user equipment within the service range of electronic device 200 is in a joint transmission scenario, operations may be performed according to the embodiments described in Section 2.3.

[0153] According to an embodiment of the present disclosure, the user equipment described above may also be a specific user equipment within the service range of the electronic device 200. For example, the user equipment may be a collaborative user within the service range of the electronic device 200, and the collaborative user is located at the edge of the service range of the electronic device 200.

[0154] As shown in Figure 2, the electronic device 200 may further include a multi-point coordination configuration unit 280 for determining a collaborative user. For example, the multi-point coordination configuration unit 280 may determine a collaborative user based on the location of the user device within the service range of the electronic device 200. For another example, the user device may measure the channel quality between the user device and the electronic device 200 and the channel quality between the user device and multiple adjacent base station devices, and send the measurement results to the electronic device 200, and the multi-point coordination configuration unit 280 determines the collaborative user based on the measurement results reported by the user device. Specifically, when the difference between the channel quality between the user device and the electronic device 200 and the channel quality between the user device and the adjacent base station devices is less than a predetermined threshold, the multi-point coordination configuration unit 280 may determine that the user device is a collaborative user. Here, the channel quality can be represented by parameters such as RSRP (Reference Signal Receiving Power).

[0155] According to an embodiment of the present disclosure, the multi-point coordination configuration unit 280 may also determine a coordinating base station for a user equipment. If the user equipment described above is any user equipment within the service range of the electronic device 200, the multi-point coordination configuration unit 280 may determine a coordinating base station for each user equipment within the service range of the electronic device 200. If the user equipment described above is a coordinating user within the service range of the electronic device 200, the multi-point coordination configuration unit 280 may determine a coordinating base station for each coordinating user.

[0156] According to an embodiment of the present disclosure, in a joint transmission scenario, the collaborative base station device may be an adjacent base station device that provides a joint transmission service for the user equipment. That is, when the collaborative base station device can no longer provide the joint transmission service for the user equipment, the electronic device 200 may determine that the smart surface will provide the joint transmission service for the user equipment. Furthermore, when the electronic device 200 performs data transmission with the UE via a direct link and a reflection link between the electronic device 200 and the UE, and the data transmission requirements are still not met, the electronic device 200 may request the collaborative base station device to provide the joint transmission service for the user equipment.

[0157] According to an embodiment of the present disclosure, a cooperative base station device may be a neighboring base station device specific to electronic device 200. For example, all user equipment within the service range of electronic device 200 may have the same cooperative base station device. Alternatively, a cooperative base station device may be a neighboring base station device specific to a user equipment. For example, multi-point coordination configuration unit 280 may determine a cooperative base station device for each user equipment. Furthermore, there may be one or more cooperative base stations.

[0158] According to an embodiment of the present disclosure, the multi-point coordination configuration unit 280 may determine a coordinated base station device providing services for each user equipment (or each coordinated user) based on the channel quality between the user equipment (or each coordinated user) and multiple neighboring base stations. For example, the multi-point coordination configuration unit 280 may determine the neighboring base station device with the best channel quality among the multiple neighboring base stations as the coordinated base station device for the user equipment.

[0159] According to an embodiment of the present disclosure, the multi-point coordination configuration unit 280 may also pre-determine for each user device (or each cooperating user) a smart surface that provides services for the user device (or the cooperating user). Specifically, the multi-point coordination configuration unit 280 may determine the smart surface that provides services for the user device based on the location of the user device. For example, the multi-point coordination configuration unit 280 may determine the smart surface that is closest to the user device within the service range of the electronic device 200 as the smart surface that serves the user device.

[0160] According to an embodiment of the present disclosure, the multi-point collaboration configuration unit 280 can determine, for each user device (or each collaborative user), the beam direction of the smart surface and the beam direction of the user device in the reflection link of the electronic device 200-the smart surface serving the user device-the user device.

[0161] As described above, the electronic device 200 can determine the user equipment that needs to execute the embodiments of the present disclosure. Optionally, for each user equipment (or each collaborative user), the electronic device can predetermine a collaborative base station device. In addition, for each user equipment (or each collaborative user), the electronic device 200 can also predetermine the smart surface and the beam direction of the smart surface in the reflection link and the beam direction of the user equipment. This process can occur, for example, after the user equipment accesses the electronic device 200. That is, the processes described in Figures 8 and 9 can be performed in advance. In this way, in cases where it is necessary to determine the beam direction of the smart surface in, for example, a switching scenario, in cases where it is necessary to determine the smart surface for user 1 and determine the reflection link beam direction in an interference scenario, and in cases where it is necessary to determine the smart surface for the user equipment and determine the reflection link beam direction in a joint transmission scenario, the above-mentioned predetermined information can be used directly, thereby saving time and signaling overhead.

[0162] <2.5 Modified Example>

[0163] Although the electronic device 200 is described above in a handover scenario, an interference scenario, and a joint transmission scenario, operations in these scenarios may also be performed independently and separately.

[0164] FIG19 is a block diagram illustrating an example of a configuration of an electronic device according to another embodiment of the present disclosure. An electronic device 1900 depicted in FIG19 is an electronic device for performing operations in an interference scenario.

[0165] As shown in FIG. 19 , the electronic device 1900 may include a communication unit 220 , a configuration unit 230 , and an interference determination unit 260 .

[0166] According to an embodiment of the present disclosure, the interference determination unit 260 may determine that transmission between the electronic device 1900 and the user equipment served by the electronic device 1900 is interfered with by transmission between the neighboring base station device and other user equipment served by the neighboring base station device.

[0167] According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface in response to interference, so that the electronic device 1900 performs data transmission with the user device via the communication unit 220 with the assistance of the smart surface.

[0168] According to an embodiment of the present disclosure, the interference determination unit 260 can determine whether the downlink transmission between the electronic device 1900 and the user equipment is interfered with by the downlink transmission between the adjacent base station device and other user equipment based on the direction of the downlink receiving beam of the user equipment, the position of the user equipment, the direction of the downlink receiving beam of other user equipment and the position of other user equipment.

[0169] According to an embodiment of the present disclosure, the electronic device 1900 may receive the direction of a downlink receive beam of another user equipment and the position of another user equipment from an adjacent base station device through the communication unit 220 .

[0170] According to an embodiment of the present disclosure, the electronic device 1900 may send an identifier of the smart surface or the direction of a downlink receiving beam of the user equipment to the user equipment through the communication unit 220, so that the user equipment receives downlink information through the smart surface.

[0171] According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface to perform a reflection link beam scanning process. As shown in FIG19 , the electronic device 1900 may further include a reflection direction determination unit 240 for determining the reflection direction of the smart surface based on beam information reported by the user equipment. The beam information may reflect the direction of the best quality beam measured by the user equipment.

[0172] Here, electronic device 1900 is an electronic device for performing operations in an interference scenario, so all the embodiments described in Section 2.2 above can be applied here. In addition, communication unit 220, configuration unit 230, reflection direction determination unit 240, and interference determination unit 260 in Figure 19 can perform the same functions as communication unit 220, configuration unit 230, reflection direction determination unit 240, and interference determination unit 260 in Figure 2.

[0173] Fig. 20 is a block diagram illustrating an example of a configuration of an electronic device according to yet another embodiment of the present disclosure. The electronic device 2000 depicted in Fig. 20 is an electronic device configured to perform operations in a joint transmission scenario.

[0174] As shown in FIG. 20 , the electronic device 2000 may include a communication unit 220 , a configuration unit 230 , and a policy determination unit 270 .

[0175] According to an embodiment of the present disclosure, the strategy determination unit 270 may determine a transmission strategy for joint transmission. The transmission strategy may include: transmitting data between the electronic device 2000 and the user device through a direct link between the electronic device 2000 and the user device and a reflection link between the smart surface and the user device; transmitting data between the electronic device 2000 and the user device through a direct link between the electronic device 2000 and the user device, a reflection link between the smart surface and the user device, and a direct link between an adjacent base station device and the user device; transmitting data between the electronic device 2000 and the user device through a direct link between the electronic device 2000 and the user device, a reflection link between the electronic device 2000 and the user device, a direct link between the adjacent base station device and the user device, and a reflection link between the adjacent base station device and the user device.

[0176] According to an embodiment of the present disclosure, the configuration unit 230 can configure the smart surface so that data between the electronic device 2000 and the user device is transmitted via the communication unit 220, through a reflective link between the smart surface and the user device, and a direct link between the electronic device 2000 and the user device.

[0177] According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface for transmission in response to load information received from an adjacent base station device, wherein the load information reflects that the service of the adjacent base station device is subject to excessive interference and / or traffic overload.

[0178] According to an embodiment of the present disclosure, the policy determination unit 270 may determine whether to configure the smart surface according to data transmission requirements between the electronic device 2000 and the user equipment.

[0179] According to an embodiment of the present disclosure, the electronic device 2000 may send at least one of the following to the user equipment through the communication unit 220: an identifier of the smart surface, and a reflection link beam direction of the user equipment.

[0180] According to an embodiment of the present disclosure, the reflection link between the smart surface and the user device, and the direct link between the electronic device 2000 and the user device are used to transmit different data streams respectively; or the reflection link between the smart surface and the user device, and the direct link between the electronic device 2000 and the user device are used to transmit the same multiple data streams.

[0181] According to an embodiment of the present disclosure, the electronic device 2000 may further include an information generation unit 210 for generating request information to request an adjacent base station device to transmit data between the electronic device 2000 and the user device via a direct link between the adjacent base station device and the user device. Further, the electronic device 2000 may send the request information to the adjacent base station device via the communication unit 220. The information generation unit 210 may also generate a link addition notification to notify the user device that the data between the user device and the electronic device 2000 is transmitted via a direct link between the electronic device 2000 and the user device, a direct link between the adjacent base station device and the user device, and a reflection link between the electronic device 2000 and the smart surface, respectively. Further, the electronic device 2000 may send a link addition notification to the user device via the communication unit 220.

[0182] According to an embodiment of the present disclosure, the direct link between the electronic device 2000 and the user device, the direct link between the adjacent base station device and the user device, and the reflection link between the electronic device 2000 and the smart surface are used to transmit different data streams respectively; or the direct link between the electronic device 2000 and the user device, the direct link between the adjacent base station device and the user device, and the reflection link between the electronic device 2000 and the smart surface are used to transmit the same multiple data streams.

[0183] According to an embodiment of the present disclosure, the request information can also be used to request the adjacent base station device to transmit data between the electronic device 2000 and the user device through the direct link between the adjacent base station device and the user device, and the reflection link between the adjacent base station device and the smart surface, and the link increase notification can also notify the user device that the data between the user device and the electronic device 2000 is transmitted through the direct link between the electronic device 2000 and the user device, the direct link between the adjacent base station device and the user device, the reflection link between the electronic device 2000 and the smart surface, and the reflection link between the adjacent base station device and the smart surface.

[0184] According to an embodiment of the present disclosure, the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 2000 and the smart surface, and the reflection link between the adjacent base station device and the smart surface are respectively used to transmit different data streams; or the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 2000 and the smart surface, and the reflection link between the adjacent base station device and the smart surface are used to transmit the same multiple data streams.

[0185] According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface to perform a reflection link beam scanning process. As shown in FIG20 , the electronic device 2000 may further include a reflection direction determination unit 240 for determining the reflection direction of the smart surface based on beam information reported by the user equipment. The beam information may reflect the direction of the best quality beam measured by the user equipment.

[0186] Here, electronic device 2000 is an electronic device for performing operations in a joint transmission scenario, so all the embodiments described in Section 2.3 above are applicable here. In addition, communication unit 220, configuration unit 230, reflection direction determination unit 240, information generation unit 210, and strategy determination unit 270 in Figure 20 can perform the same functions as communication unit 220, configuration unit 230, reflection direction determination unit 240, information generation unit 210, and strategy determination unit 270 in Figure 2.

[0187] <3. Method Example>

[0188] Next, a wireless communication method performed by the electronic device 200 in the wireless communication system according to an embodiment of the present disclosure will be described in detail.

[0189] FIG21 is a flowchart illustrating a wireless communication method performed by an electronic device 200 in a wireless communication system according to an embodiment of the present disclosure.

[0190] As shown in Figure 21, in step S2110, a switching request is generated, the switching request includes information about the smart surface providing services to the user device within the service range of the electronic device 200.

[0191] Next, in step S2120 , a handover request is sent to the target base station device of the user equipment, so that the smart surface continues to provide services for the user equipment after the user equipment is handed over to the target base station device.

[0192] Preferably, the information of the smart surface includes an identification of the smart surface.

[0193] Preferably, the information of the smart surface further includes information related to the reflection direction of the smart surface.

[0194] Preferably, the wireless communication method further includes: sending measurement control information of a downlink beam scanning process to a user equipment; configuring a smart surface to perform a reflection link beam scanning process; and determining a reflection direction of the smart surface based on the beam information from the user equipment.

[0195] Preferably, the wireless communication method further comprises: predicting a reflection link beam direction between the user equipment and the smart surface based on the position and motion information of the user equipment; and determining measurement control information according to the predicted reflection link beam direction of the user equipment.

[0196] Preferably, the wireless communication method also includes: determining that the transmission between the electronic device and the user equipment is interfered with by the transmission between the adjacent base station equipment and other user equipment served by the adjacent base station equipment; and configuring the smart surface so that the electronic device 200 can transmit data with the user equipment with the assistance of the smart surface.

[0197] Preferably, determining that the transmission between the electronic device 200 and the user equipment is interfered with includes: determining that the downlink transmission between the electronic device 200 and the user equipment is interfered with by the downlink transmission between the adjacent base station device and other user equipment based on the direction of the downlink receiving beam of the user equipment, the position of the user equipment, the direction of the downlink receiving beam of other user equipment and the position of other user equipment.

[0198] Preferably, the wireless communication method further comprises: receiving the direction of the downlink receiving beam of other user equipment and the position of other user equipment from the adjacent base station equipment.

[0199] Preferably, the wireless communication method further comprises: sending an identifier of the smart surface or a direction of a downlink receiving beam of the user equipment to the user equipment, so that the user equipment receives downlink information through the smart surface.

[0200] Preferably, the wireless communication method further comprises: configuring the smart surface so that data between the electronic device 200 and the user equipment is transmitted via a reflection link between the smart surface and the user equipment and a direct link between the electronic device 200 and the user equipment respectively.

[0201] Preferably, the wireless communication method further comprises: configuring the smart surface to perform transmission in response to load information received from an adjacent base station device, wherein the load information of the adjacent base station reflects that the service of the adjacent base station is subject to excessive interference and / or traffic overload.

[0202] Preferably, the wireless communication method further comprises: determining whether to configure the smart surface according to data transmission requirements between the electronic device 200 and the user equipment.

[0203] Preferably, the wireless communication method further comprises: sending at least one of the following to the user equipment: an identifier of the smart surface, a reflection link beam direction of the user equipment.

[0204] Preferably, the reflection link between the smart surface and the user device, and the direct link between the electronic device 200 and the user device are used to transmit different data streams respectively; or the reflection link between the smart surface and the user device, and the direct link between the electronic device 200 and the user device are used to transmit the same multiple data streams.

[0205] Preferably, the wireless communication method also includes: generating and sending a request information to an adjacent base station device to request the adjacent base station device to transmit data between the electronic device 200 and the user device through a direct link between the adjacent base station device and the user device; and generating and sending a link addition notification to the user device to notify the user device that the data between the user device and the electronic device 200 is transmitted respectively through a direct link between the electronic device 200 and the user device, a direct link between the adjacent base station device and the user device, and a reflection link between the electronic device 200 and the smart surface.

[0206] Preferably, the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device 200 and the smart surface are used to transmit different data streams respectively; or the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device 200 and the smart surface are used to transmit the same multiple data streams.

[0207] Preferably, the wireless communication method also includes: generating and sending request information to an adjacent base station device to request the adjacent base station device to transmit data between the electronic device 200 and the user device through a direct link between the adjacent base station device and the user device, and a reflection link between the adjacent base station device and the smart surface; and generating and sending a link addition notification to the user device to notify the user device that the data between the user device and the electronic device 200 is transmitted through a direct link between the electronic device 200 and the user device, a direct link between the adjacent base station device and the user device, a reflection link between the electronic device 200 and the smart surface, and a reflection link between the adjacent base station device and the smart surface.

[0208] Preferably, the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 200 and the smart surface, and the reflection link between the adjacent base station device and the smart surface are respectively used to transmit different data streams; or the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 200 and the smart surface, and the reflection link between the adjacent base station device and the smart surface are used to transmit the same multiple data streams.

[0209] Preferably, the user equipment is a collaborative user within the service range of the electronic device 200 , and the collaborative user is located at the edge of the service range of the electronic device 200 .

[0210] Preferably, the wireless communication method further comprises: determining a cooperative base station device that provides services for the cooperative user according to channel qualities between the cooperative user and a plurality of adjacent base station devices.

[0211] Preferably, the wireless communication method further comprises: determining a smart surface that provides services to the collaborative user according to the location of the collaborative user.

[0212] According to an embodiment of the present disclosure, the subject that executes the above method may be the electronic device 200 according to an embodiment of the present disclosure, and therefore all the embodiments regarding the electronic device 200 in the foregoing text are applicable hereto.

[0213] Next, a wireless communication method performed by the electronic device 1900 in the wireless communication system according to an embodiment of the present disclosure will be described in detail.

[0214] FIG22 is a flowchart illustrating a wireless communication method performed by an electronic device 1900 in a wireless communication system according to an embodiment of the present disclosure.

[0215] As shown in FIG. 22 , in step S2210 , it is determined that transmission between the electronic device 1900 and the user equipment is interfered with by transmission between a neighboring base station and other user equipments served by the neighboring base station.

[0216] Next, in step S2220 , in response to the interference, the smart surface is configured so that the electronic device 1900 performs data transmission with the user device through the assistance of the smart surface.

[0217] Preferably, determining that the transmission between the electronic device 1900 and the user equipment is interfered with includes: determining, based on the direction of the downlink receiving beam of the user equipment, the position of the user equipment, the direction of the downlink receiving beam of other user equipment and the position of other user equipment, that the downlink transmission between the electronic device 1900 and the user equipment is interfered with by the downlink transmission between the adjacent base station device and other user equipment.

[0218] Preferably, the wireless communication method further comprises: receiving the direction of the downlink receiving beam of other user equipment and the position of other user equipment from the adjacent base station equipment.

[0219] Preferably, the wireless communication method further comprises: sending an identifier of the smart surface or a direction of a downlink receiving beam of the user equipment to the user equipment, so that the user equipment receives downlink information through the smart surface.

[0220] According to an embodiment of the present disclosure, the subject that executes the above method may be the electronic device 1900 according to an embodiment of the present disclosure, and therefore all the embodiments regarding the electronic device 1900 in the foregoing text are applicable hereto.

[0221] Next, a wireless communication method performed by the electronic device 2000 in the wireless communication system according to an embodiment of the present disclosure will be described in detail.

[0222] FIG23 is a flowchart illustrating a wireless communication method performed by the electronic device 2000 in the wireless communication system according to an embodiment of the present disclosure.

[0223] As shown in FIG23 , in step S2310, a joint transmission strategy is determined. The strategy includes, but is not limited to: transmitting data between the electronic device 2000 and the user equipment via a direct link between the electronic device 2000 and the user equipment and a reflection link between the smart surface and the user equipment; transmitting data between the electronic device 2000 and the user equipment via a direct link between the electronic device 2000 and the user equipment, a reflection link between the smart surface and the user equipment, and a direct link between an adjacent base station device and the user equipment; transmitting data between the electronic device 2000 and the user equipment via a direct link between the electronic device 2000 and the user equipment, a reflection link between the electronic device 2000 and the user equipment, a direct link between an adjacent base station device and the user equipment, and a reflection link between an adjacent base station device and the user equipment.

[0224] Next, in step S2320, the smart surface is configured so that data between the electronic device 2000 and the user equipment is transmitted via a reflection link between the smart surface and the user equipment and a direct link between the electronic device 2000 and the user equipment, respectively.

[0225] Preferably, the wireless communication method further comprises: configuring the smart surface to perform transmission in response to load information received from an adjacent base station device, wherein the load information of the adjacent base station reflects that the service of the adjacent base station is subject to excessive interference and / or traffic overload.

[0226] Preferably, the wireless communication method further comprises: determining whether to configure the smart surface according to data transmission requirements between the electronic device 2000 and the user equipment.

[0227] Preferably, the wireless communication method further comprises: sending at least one of the following to the user equipment: an identifier of the smart surface, a reflection link beam direction of the user equipment.

[0228] Preferably, the reflection link between the smart surface and the user device, and the direct link between the electronic device 2000 and the user device are used to transmit different data streams respectively; or the reflection link between the smart surface and the user device, and the direct link between the electronic device 2000 and the user device are used to transmit the same multiple data streams.

[0229] Preferably, the wireless communication method also includes: generating and sending request information to an adjacent base station device to request the adjacent base station device to transmit data between the electronic device 2000 and the user device through a direct link between the adjacent base station device and the user device; and generating and sending a link addition notification to the user device to notify the user device that the data between the user device and the electronic device 2000 is transmitted respectively through a direct link between the electronic device 2000 and the user device, a direct link between the adjacent base station device and the user device, and a reflection link between the electronic device 2000 and the smart surface.

[0230] Preferably, the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device 2000 and the smart surface are used to transmit different data streams respectively; or the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device 2000 and the smart surface are used to transmit the same multiple data streams.

[0231] Preferably, the wireless communication method also includes: generating and sending request information to an adjacent base station device to request the adjacent base station device to transmit data between the electronic device 2000 and the user device through a direct link between the adjacent base station device and the user device, and a reflection link between the adjacent base station device and the smart surface; and generating and sending a link addition notification to the user device to notify the user device that the data between the user device and the electronic device 2000 is transmitted through a direct link between the electronic device 2000 and the user device, a direct link between the adjacent base station device and the user device, a reflection link between the electronic device 2000 and the smart surface, and a reflection link between the adjacent base station device and the smart surface.

[0232] Preferably, the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 2000 and the smart surface, and the reflection link between the adjacent base station device and the smart surface are respectively used to transmit different data streams; or the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device 2000 and the smart surface, and the reflection link between the adjacent base station device and the smart surface are used to transmit the same multiple data streams.

[0233] According to an embodiment of the present disclosure, the subject that executes the above method may be the electronic device 2000 according to an embodiment of the present disclosure, and therefore all the embodiments regarding the electronic device 2000 in the foregoing text are applicable hereto.

[0234] <4. Application Examples>

[0235] The technology of the present disclosure can be applied to various products.

[0236] For example, a base station device may be implemented 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) located at a different location from the main body.

[0237] The user equipment may be implemented as a mobile terminal (such as a smartphone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle-type mobile router, and a digital camera) or an in-vehicle 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 known 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 user equipment.

[0238] <Application examples for base stations>

[0239] (First application example)

[0240] 24 is a block diagram illustrating a first example of a schematic configuration of a gNB to which the technology of the present disclosure can be applied. The gNB 2400 includes one or more antennas 2410 and a base station device 2420. The base station device 2420 and each antenna 2410 can be connected to each other via an RF cable.

[0241] Each of the antennas 2410 includes a single or multiple antenna elements (such as the multiple antenna elements included in a multiple-input, multiple-output (MIMO) antenna) and is used for base station device 2420 to transmit and receive wireless signals. As shown in FIG24 , gNB 2400 may include multiple antennas 2410. For example, multiple antennas 2410 may be compatible with multiple frequency bands used by gNB 2400. Although FIG24 illustrates an example in which gNB 2400 includes multiple antennas 2410, gNB 2400 may also include a single antenna 2410.

[0242] The base station device 2420 includes a controller 2421 , a memory 2422 , a network interface 2423 , and a wireless communication interface 2425 .

[0243] The controller 2421 may be, for example, a CPU or a DSP, and operates various higher-layer functions of the base station device 2420. For example, the controller 2421 generates data packets based on the data in the signal processed by the wireless communication interface 2425 and transmits the generated packets via the network interface 2423. The controller 2421 may bundle data from multiple baseband processors to generate bundled packets and transmit the generated bundled packets. The controller 2421 may have logic functions for performing the following controls: such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control may be performed in conjunction with a nearby gNB or core network node. The memory 2422 includes RAM and ROM and stores programs executed by the controller 2421 and various types of control data (such as terminal lists, transmission power data, and scheduling data).

[0244] The network interface 2423 is a communication interface for connecting the base station device 2420 to the core network 2424. The controller 2421 can communicate with the core network node or another gNB via the network interface 2423. In this case, the gNB 2400 and the core network node or other gNB can be connected to each other via a logical interface (such as an S1 interface and an X2 interface). The network interface 2423 can also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 2423 is a wireless communication interface, the network interface 2423 can use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 2425.

[0245] The wireless communication interface 2425 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connectivity to terminals located in the gNB 2400 cell via the antenna 2410. The wireless communication interface 2425 may typically include, for example, a baseband (BB) processor 2426 and RF circuitry 2427. The BB processor 2426 can perform various signal processing functions, such as encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and performs various signal processing for layers such as Layer 1 (L1), Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP). In place of the controller 2421, the BB processor 2426 may perform some or all of the aforementioned logical functions. The BB processor 2426 may be a memory storing communication control programs, or a module including a processor configured to execute programs and associated circuitry. Program updates can modify the functionality of the BB processor 2426. This module may be a card or blade inserted into a slot in the base station device 2420. Alternatively, it may be a chip mounted on the card or blade. Meanwhile, the RF circuit 2427 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 2410 .

[0246] As shown in Figure 24 , the wireless communication interface 2425 may include multiple BB processors 2426. For example, multiple BB processors 2426 may be compatible with multiple frequency bands used by the gNB 2400. As shown in Figure 24 , the wireless communication interface 2425 may include multiple RF circuits 2427. For example, multiple RF circuits 2427 may be compatible with multiple antenna elements. While Figure 24 illustrates an example in which the wireless communication interface 2425 includes multiple BB processors 2426 and multiple RF circuits 2427, the wireless communication interface 2425 may also include a single BB processor 2426 or a single RF circuit 2427.

[0247] (Second application example)

[0248] FIG25 is a block diagram illustrating a second example of a schematic configuration of a gNB to which the techniques of this disclosure can be applied. A gNB 2530 includes one or more antennas 2540, a base station 2550, and an RRH 2560. The RRH 2560 and each antenna 2540 can be connected to each other via an RF cable. The base station 2550 and the RRH 2560 can also be connected to each other via a high-speed line such as an optical fiber cable.

[0249] Each of the antennas 2540 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for RRH 2560 to transmit and receive wireless signals. As shown in FIG25 , gNB 2530 may include multiple antennas 2540. For example, the multiple antennas 2540 may be compatible with multiple frequency bands used by gNB 2530. Although FIG25 shows an example in which gNB 2530 includes multiple antennas 2540, gNB 2530 may also include a single antenna 2540.

[0250] Base station device 2550 includes a controller 2551, a memory 2552, a network interface 2553, a wireless communication interface 2555, and a connection interface 2557. Controller 2551, memory 2552, and network interface 2553 are the same as controller 2421, memory 2422, and network interface 2423 described with reference to FIG. 24. Network interface 2553 is a communication interface for connecting base station device 2550 to core network 2554.

[0251] The wireless communication interface 2555 supports any cellular communication scheme (such as LTE and LTE-Advanced) and provides wireless communication to terminals located in the sector corresponding to the RRH 2560 via the RRH 2560 and the antenna 2540. The wireless communication interface 2555 may generally include, for example, a BB processor 2556. The BB processor 2556 is identical to the BB processor 2426 described with reference to FIG. 24 , except that the BB processor 2556 is connected to the RF circuit 2564 of the RRH 2560 via the connection interface 2557. As shown in FIG. 25 , the wireless communication interface 2555 may include multiple BB processors 2556. For example, multiple BB processors 2556 may be compatible with multiple frequency bands used by the gNB 2530. Although FIG. 25 illustrates an example in which the wireless communication interface 2555 includes multiple BB processors 2556, the wireless communication interface 2555 may also include a single BB processor 2556.

[0252] The connection interface 2557 is an interface for connecting the base station device 2550 (wireless communication interface 2555) to the RRH 2560. The connection interface 2557 may also be a communication module for connecting the base station device 2550 (wireless communication interface 2555) to the RRH 2560 for communication in the high-speed line.

[0253] The RRH 2560 includes a connection interface 2561 and a wireless communication interface 2563 .

[0254] The connection interface 2561 is an interface for connecting the RRH 2560 (wireless communication interface 2563) to the base station device 2550. The connection interface 2561 may also be a communication module for communication in the above-mentioned high-speed line.

[0255] The wireless communication interface 2563 transmits and receives wireless signals via the antenna 2540. The wireless communication interface 2563 may generally include, for example, an RF circuit 2564. The RF circuit 2564 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 2540. As shown in FIG25 , the wireless communication interface 2563 may include multiple RF circuits 2564. For example, the multiple RF circuits 2564 may support multiple antenna elements. Although FIG25 shows an example in which the wireless communication interface 2563 includes multiple RF circuits 2564, the wireless communication interface 2563 may also include a single RF circuit 2564.

[0256] In the gNB 2400 and gNB 2530 shown in Figures 24 and 25, the information generating unit 210, configuring unit 230, reflection direction determining unit 240, predicting unit 250, interference determining unit 260, strategy determining unit 270, and coordinated multi-point configuration unit 280 described in Figure 2 may be implemented by the controller 2421 and / or the controller 2551. At least a portion of the functions may also be implemented by the controller 2421 and the controller 2551. For example, the controller 2421 and / or the controller 2551 may generate various information, configure a smart surface, determine a beam direction for a reflection link, predict a beam direction for a reflection link, determine interference, determine a joint transmission strategy, and determine configuration information related to coordinated multi-point by executing instructions stored in corresponding memories.

[0257] <Application examples for terminal devices>

[0258] (First application example)

[0259] 26 is a block diagram showing an example of a schematic configuration of a smartphone 2600 to which the technology of the present disclosure can be applied. The smartphone 2600 includes a processor 2601, a memory 2602, a storage device 2603, an external connection interface 2604, a camera 2606, a sensor 2607, a microphone 2608, an input device 2609, a display device 2610, a speaker 2611, a wireless communication interface 2612, one or more antenna switches 2615, one or more antennas 2616, a bus 2617, a battery 2618, and an auxiliary controller 2619.

[0260] The processor 2601 may be, for example, a CPU or a system on a chip (SoC), and controls the functions of the application layer and other layers of the smartphone 2600. The memory 2602 includes RAM and ROM, and stores data and programs executed by the processor 2601. The storage device 2603 may include storage media such as semiconductor memories and hard disks. The external connection interface 2604 is an interface for connecting external devices (such as memory cards and universal serial bus (USB) devices) to the smartphone 2600.

[0261] The camera 2606 includes an image sensor (such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS)) and generates a captured image. The sensor 2607 may include a group of sensors such as a measurement sensor, a gyroscope sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 2608 converts the sound input to the smart phone 2600 into an audio signal. The input device 2609 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 2610, and receives an operation or information input from the user. The display device 2610 includes a screen (such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display) and displays the output image of the smart phone 2600. The speaker 2611 converts the audio signal output from the smart phone 2600 into sound.

[0262] The wireless communication interface 2612 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication. The wireless communication interface 2612 may generally include, for example, a BB processor 2613 and an RF circuit 2614. The BB processor 2613 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 2614 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 2616. The wireless communication interface 2612 may be a chip module on which the BB processor 2613 and the RF circuit 2614 are integrated. As shown in FIG26 , the wireless communication interface 2612 may include multiple BB processors 2613 and multiple RF circuits 2614. Although FIG26 shows an example in which the wireless communication interface 2612 includes multiple BB processors 2613 and multiple RF circuits 2614, the wireless communication interface 2612 may also include a single BB processor 2613 or a single RF circuit 2614.

[0263] In addition, in addition to the cellular communication scheme, the wireless communication interface 2612 can support other types of wireless communication schemes, such as a short-range wireless communication scheme, a near-field communication scheme, and a wireless local area network (LAN) scheme. In this case, the wireless communication interface 2612 can include a BB processor 2613 and an RF circuit 2614 for each wireless communication scheme.

[0264] Each of the antenna switches 2615 switches the connection destination of the antenna 2616 between a plurality of circuits (eg, circuits for different wireless communication schemes) included in the wireless communication interface 2612 .

[0265] Each of the antennas 2616 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for transmitting and receiving wireless signals via the wireless communication interface 2612. As shown in FIG26 , the smartphone 2600 may include multiple antennas 2616. Although FIG26 shows an example in which the smartphone 2600 includes multiple antennas 2616, the smartphone 2600 may also include a single antenna 2616.

[0266] In addition, the smartphone 2600 may include an antenna 2616 for each wireless communication scheme. In this case, the antenna switch 2615 may be omitted from the configuration of the smartphone 2600.

[0267] The bus 2617 connects the processor 2601, the memory 2602, the storage device 2603, the external connection interface 2604, the camera 2606, the sensor 2607, the microphone 2608, the input device 2609, the display device 2610, the speaker 2611, the wireless communication interface 2612, and the auxiliary controller 2619. The battery 2618 supplies power to the various blocks of the smartphone 2600 shown in FIG26 via feeders, which are partially shown as dashed lines in the figure. The auxiliary controller 2619 operates the minimum necessary functions of the smartphone 2600, for example, in sleep mode.

[0268] (Second application example)

[0269] 27 is a block diagram showing an example of a schematic configuration of a car navigation device 2720 to which the technology of the present disclosure can be applied. The car navigation device 2720 includes a processor 2721, a memory 2722, a global positioning system (GPS) module 2724, a sensor 2725, a data interface 2726, a content player 2727, a storage medium interface 2728, an input device 2729, a display device 2730, a speaker 2731, a wireless communication interface 2733, one or more antenna switches 2736, one or more antennas 2737, and a battery 2738.

[0270] The processor 2721 may be, for example, a CPU or an SoC, and controls a navigation function and other functions of the car navigation device 2720. The memory 2122 includes a RAM and a ROM, and stores data and programs executed by the processor 2721.

[0271] The GPS module 2724 uses GPS signals received from GPS satellites to measure the position (such as latitude, longitude, and altitude) of the car navigation device 2720. The sensor 2725 may include a group of sensors such as a gyroscope sensor, a geomagnetic sensor, and an air pressure sensor. The data interface 2726 is connected to, for example, the vehicle network 2741 via a terminal not shown, and acquires data generated by the vehicle (such as vehicle speed data).

[0272] The content player 2727 reproduces content stored in a storage medium (such as a CD or DVD) inserted into the storage medium interface 2728. The input device 2729 includes, for example, a touch sensor, button, or switch configured to detect a touch on the screen of the display device 2730, and receives operations or information input from the user. The display device 2730 includes a screen such as an LCD or OLED display and displays images of the navigation function or reproduced content. The speaker 2731 outputs sounds of the navigation function or reproduced content.

[0273] The wireless communication interface 2733 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication. The wireless communication interface 2733 may generally include, for example, a BB processor 2734 and an RF circuit 2735. The BB processor 2734 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 2735 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 2737. The wireless communication interface 2733 may also be a chip module on which the BB processor 2734 and the RF circuit 2735 are integrated. As shown in Figure 27, the wireless communication interface 2733 may include multiple BB processors 2734 and multiple RF circuits 2735. Although Figure 27 shows an example in which the wireless communication interface 2733 includes multiple BB processors 2734 and multiple RF circuits 2735, the wireless communication interface 2733 may also include a single BB processor 2734 or a single RF circuit 2735.

[0274] In addition, in addition to the cellular communication scheme, the wireless communication interface 2733 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless LAN schemes. In this case, for each wireless communication scheme, the wireless communication interface 2733 can include a BB processor 2734 and an RF circuit 2735.

[0275] Each of the antenna switches 2736 switches the connection destination of the antenna 2737 between a plurality of circuits included in the wireless communication interface 2733 , such as circuits for different wireless communication schemes.

[0276] Each of the antennas 2737 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for transmitting and receiving wireless signals via the wireless communication interface 2733. As shown in FIG27 , the car navigation device 2720 may include multiple antennas 2737. Although FIG27 shows an example in which the car navigation device 2720 includes multiple antennas 2737, the car navigation device 2720 may also include a single antenna 2737.

[0277] In addition, the car navigation device 2720 may include an antenna 2737 for each wireless communication scheme. In this case, the antenna switch 2736 may be omitted from the configuration of the car navigation device 2720.

[0278] The battery 2738 supplies power to the respective blocks of the car navigation device 2720 shown in Fig. 27 via a feeder line, which is partially shown as a dotted line in the figure. The battery 2738 accumulates the power supplied from the vehicle.

[0279] The technology of the present disclosure can also be implemented as an in-vehicle system (or vehicle) 2740 including a car navigation device 2720, an in-vehicle network 2741, and one or more blocks in a vehicle module 2742. The vehicle module 2742 generates vehicle data (such as vehicle speed, engine speed, and fault information) and outputs the generated data to the in-vehicle network 2741.

[0280] The preferred embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is of course 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.

[0281] For example, the units shown in dotted 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.

[0282] 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.

[0283] In this specification, the steps described in the flowchart include not only processing executed in time series in the order described, but also processing executed 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 changed as appropriate.

[0284] Although the embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, it should be understood that the embodiments described above are merely illustrative of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will appreciate that various modifications and variations can be made to the above embodiments without departing from the spirit and scope of the present disclosure. Therefore, the scope of the present disclosure is solely defined by the appended claims and their equivalents.

Claims

1. An electronic device for a base station, comprising a processing circuit configured to: generating a handover request, the handover request including information of a smart surface that provides services to the user equipment within a service range of the electronic device; and The handover request is sent to a target base station device of the user equipment, so that the smart surface continues to provide services for the user equipment after the user equipment is handed over to the target base station device.

2. The electronic device according to claim 1, wherein The information of the smart surface includes an identifier of the smart surface.

3. The electronic device according to claim 2, wherein The information of the smart surface further includes information related to the reflection direction of the smart surface.

4. The electronic device according to claim 3, wherein The processing circuit is further configured to: Sending measurement control information of a reflection link beam scanning process to the user equipment; configuring the smart surface to perform a reflective link beam scanning process; as well as The reflection direction of the smart surface is determined according to the beam information from the user equipment.

5. The electronic device according to claim 4, wherein The processing circuit is further configured to: Predicting a reflection link beam direction between the user equipment and the smart surface based on the location and motion information of the user equipment; and The measurement control information is determined according to the predicted reflected link beam direction of the user equipment. The electronic device according to claim 1 , wherein: The processing circuit is further configured to: determining that transmission between the electronic device and the user equipment is interfered with by transmission between a neighboring base station device and other user equipment served by the neighboring base station device; as well as Configure the smart surface so that the electronic device assists with the communication with the User equipment performs data transmission.

7. The electronic device according to claim 6, wherein: The processing circuit is further configured to: Determine, based on the direction of the downlink receive beam of the user equipment, the position of the user equipment, the direction of the downlink receive beam of the other user equipment and the position of the other user equipment, whether the downlink transmission between the electronic device and the user equipment is interfered with by the downlink transmission between the adjacent base station device and the other user equipment.

8. The electronic device according to claim 7, wherein: The processing circuit is further configured to: The direction of the downlink receiving beam of the other user equipment and the position of the other user equipment are received from the adjacent base station device.

9. The electronic device according to claim 6, wherein: The processing circuit is further configured to: An identifier of the smart surface or a direction of a downlink receiving beam of the user equipment is sent to the user equipment, so that the user equipment receives the downlink information through the smart surface.

10. The electronic device according to claim 1, wherein The processing circuit is further configured to: The smart surface is configured so that data between the electronic device and the user equipment is transmitted via a reflective link between the smart surface and the user equipment and a direct link between the electronic device and the user equipment, respectively.

11. The electronic device according to claim 6 or 10, wherein: The processing circuit is further configured to: In response to load information received from an adjacent base station device, the smart surface is configured to perform transmission, wherein the load information reflects a situation where services of the adjacent base station device are subject to excessive interference and / or traffic is overloaded.

12. The electronic device according to claim 10, wherein: The processing circuit is further configured to: Determine whether to transmit data according to the data transmission requirements between the electronic device and the user equipment The smart surface is configured.

13. The electronic device according to claim 10, wherein: The processing circuit is further configured to: At least one of the following is sent to the user equipment: an identifier of the smart surface, and a reflection link beam direction of the user equipment.

14. The electronic device according to claim 10, wherein: The reflective link between the smart surface and the user equipment, and the direct link between the electronic device and the user equipment are respectively used to transmit different data streams; or The reflective link between the smart surface and the user equipment and the direct link between the electronic device and the user equipment are used to transmit the same multiple data streams.

15. The electronic device according to claim 10, wherein The processing circuit is further configured to: Generate and send request information to a neighboring base station device to request the neighboring base station device to transmit data between the electronic device and the user equipment through a direct link between the neighboring base station device and the user equipment; as well as Generate and send a link addition notification to the user equipment to notify the user equipment that the data between the user equipment and the electronic device are transmitted through the direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device and the smart surface.

16. The electronic device according to claim 15, wherein The direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device and the smart surface are respectively used to transmit different data streams; or The direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device and the smart surface are used to transmit the same multiple data streams.

17. The electronic device according to claim 10, wherein: The processing circuit is further configured to: Generate and send request information to the adjacent base station device to request the adjacent base station device to respectively connect to the user equipment through the direct link between the adjacent base station device and the user equipment, and the corresponding a reflection link between a neighboring base station device and the smart surface to transmit data between the electronic device and the user equipment; as well as Generate and send a link addition notification to the user equipment to notify the user equipment that the data between the user equipment and the electronic device are transmitted respectively through the direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device and the smart surface, and the reflection link between the adjacent base station device and the smart surface.

18. The electronic device according to claim 17, wherein: The direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device and the smart surface, and the reflection link between the adjacent base station device and the smart surface are respectively used to transmit different data streams; or The direct link between the electronic device and the user device, the direct link between the adjacent base station device and the user device, the reflection link between the electronic device and the smart surface, and the reflection link between the adjacent base station device and the smart surface are used to transmit the same multiple data streams.

19. The electronic device according to any one of claims 1 to 10 and 12 to 18, wherein: The user equipment is a collaborative user within the service range of the electronic device, and the collaborative user is located at the edge of the service range of the electronic device.

20. The electronic device according to claim 19, wherein The processing circuit is further configured to: A cooperative base station device that provides services for the cooperative user is determined according to channel qualities between the cooperative user and a plurality of adjacent base station devices.

21. The electronic device according to claim 19, wherein The processing circuit is further configured to: Determine a smart surface that provides services for the collaborative user according to the location of the collaborative user.

22. An electronic device for a base station, comprising a processing circuit configured to: determining that transmission between the electronic device and a user equipment served by the electronic device is interfered with by transmission between a neighboring base station device and other user equipment served by the neighboring base station device; and In response to the interference, a smart surface is configured so that the electronic device assists in data transmission with the user device through the smart surface.

23. A wireless communication method performed by an electronic device used at a base station side, comprising: generating a handover request, the handover request including information of a smart surface that provides services to the user equipment within a service range of the electronic device; as well as The handover request is sent to a target base station device of the user equipment, so that the smart surface continues to provide services for the user equipment after the user equipment is handed over to the target base station device.

24. The wireless communication method according to claim 23, wherein: The information of the smart surface includes an identifier of the smart surface.

25. The wireless communication method according to claim 24, wherein: The information of the smart surface further includes information related to the reflection direction of the smart surface.

26. The wireless communication method according to claim 25, wherein: The wireless communication method further includes: Sending measurement control information of a reflection link beam scanning process to the user equipment; configuring the smart surface to perform a reflective link beam scanning process; and The reflection direction of the smart surface is determined according to the beam information from the user equipment.

27. The wireless communication method according to claim 26, wherein: The wireless communication method further includes: Predicting a reflection link beam direction between the user equipment and the smart surface based on the location and motion information of the user equipment; and The measurement control information is determined according to the predicted reflected link beam direction of the user equipment.

28. The wireless communication method according to claim 23, wherein: The wireless communication method further includes: determining that transmission between the electronic device and the user equipment is interfered with by transmission between a neighboring base station device and other user equipment served by the neighboring base station device; and Configure the smart surface so that the electronic device assists with the communication with the User equipment performs data transmission.

29. The wireless communication method according to claim 28, wherein: Determining that transmission between the electronic device and the user equipment is interfered with includes: Determine, based on the direction of the downlink receive beam of the user equipment, the position of the user equipment, the direction of the downlink receive beam of the other user equipment and the position of the other user equipment, whether the downlink transmission between the electronic device and the user equipment is interfered with by the downlink transmission between the adjacent base station device and the other user equipment.

30. The wireless communication method according to claim 29, wherein: The wireless communication method further includes: The direction of the downlink receiving beam of the other user equipment and the position of the other user equipment are received from the adjacent base station device.

31. The wireless communication method according to claim 28, wherein: The wireless communication method further includes: An identifier of the smart surface or a direction of a downlink receiving beam of the user equipment is sent to the user equipment, so that the user equipment receives the downlink information through the smart surface.

32. The wireless communication method according to claim 23, wherein: The wireless communication method further includes: The smart surface is configured so that data between the electronic device and the user equipment is transmitted via a reflective link between the smart surface and the user equipment and a direct link between the electronic device and the user equipment, respectively.

33. The wireless communication method according to claim 28 or 32, wherein: The wireless communication method further includes: In response to load information received from an adjacent base station device, the smart surface is configured to perform transmission, wherein the load information reflects a situation where services of the adjacent base station device are subject to excessive interference and / or traffic is overloaded.

34. The wireless communication method according to claim 32, wherein: The wireless communication method further includes: Determine whether to transmit data according to the data transmission requirements between the electronic device and the user equipment The smart surface is configured.

35. The wireless communication method according to claim 32, wherein: The wireless communication method further includes: At least one of the following is sent to the user equipment: an identifier of the smart surface, and a reflection link beam direction of the user equipment.

36. The wireless communication method according to claim 32, wherein: The reflective link between the smart surface and the user equipment, and the direct link between the electronic device and the user equipment are respectively used to transmit different data streams; or The reflective link between the smart surface and the user equipment and the direct link between the electronic device and the user equipment are used to transmit the same multiple data streams.

37. The wireless communication method according to claim 32, wherein: The wireless communication method further includes: Generate and send request information to a neighboring base station device to request the neighboring base station device to transmit data between the electronic device and the user equipment through a direct link between the neighboring base station device and the user equipment; and Generate and send a link addition notification to the user equipment to notify the user equipment that the data between the user equipment and the electronic device are transmitted through the direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device and the smart surface.

38. The wireless communication method according to claim 37, wherein: The direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device and the smart surface are respectively used to transmit different data streams; or The direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, and the reflection link between the electronic device and the smart surface are used to transmit the same multiple data streams.

39. The wireless communication method according to claim 32, wherein: The wireless communication method further includes: Generate and send request information to the adjacent base station device to request the adjacent base station device to respectively connect to the user equipment through the direct link between the adjacent base station device and the user equipment, and the corresponding a reflection link between a neighboring base station device and the smart surface to transmit data between the electronic device and the user equipment; and Generate and send a link addition notification to the user equipment to notify the user equipment that the data between the user equipment and the electronic device are transmitted respectively through the direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device and the smart surface, and the reflection link between the adjacent base station device and the smart surface.

40. The wireless communication method according to claim 39, wherein: The direct link between the electronic device and the user equipment, the direct link between the adjacent base station device and the user equipment, the reflection link between the electronic device and the smart surface, and the reflection link between the adjacent base station device and the smart surface are respectively used to transmit different data streams; or The direct link between the electronic device and the user device, the direct link between the adjacent base station device and the user device, the reflection link between the electronic device and the smart surface, and the reflection link between the adjacent base station device and the smart surface are used to transmit the same multiple data streams.

41. The wireless communication method according to any one of claims 23-32 and 34-40, wherein: The user equipment is a collaborative user within the service range of the electronic device, and the collaborative user is located at the edge of the service range of the electronic device.

42. The wireless communication method according to claim 41, wherein: The wireless communication method further includes: A cooperative base station device that provides services for the cooperative user is determined according to channel qualities between the cooperative user and a plurality of adjacent base station devices.

43. The wireless communication method according to claim 41, wherein: The wireless communication method further includes: Determine a smart surface that provides services for the collaborative user according to the location of the collaborative user.

44. A wireless communication method performed by an electronic device used at a base station side, comprising: Determining that transmission between the electronic device and a user equipment served by the electronic device is interfered with by transmission between a neighboring base station device and other user equipment served by the neighboring base station device; as well as In response to the interference, a smart surface is configured so that the electronic device assists in data transmission with the user device through the smart surface.

45. 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 23-44.

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