WO2024046255A1

WO2024046255A1 - Electronic device, wireless communication method, and computer readable storage medium

Info

Publication number: WO2024046255A1
Application number: PCT/CN2023/115187
Authority: WO
Inventors: 党建; 朱宏伟; 樊婷婷
Original assignee: 索尼集团公司; 党建
Priority date: 2022-09-02
Filing date: 2023-08-28
Publication date: 2024-03-07
Also published as: CN117692919A

Abstract

The present disclosure relates to an electronic device, a wireless communication method, and a computer readable storage medium. The electronic device for a base station side of the present disclosure comprises a processing circuit, configured to: generate a switching request, wherein the switching request comprises information of an intelligent surface for providing a service for a user equipment in the service range of the electronic device; and a target base station device, used for sending the switching request to the user equipment, so that the intelligent surface continues providing the service for the user equipment after the user equipment is switched to the target base station device. According to the electronic device, the wireless communication method, and the computer readable storage medium of the present disclosure, the coordinated multi-point technology and the intelligent surface technology can be combined, so that inter-cell interference is reduced or avoided without affecting the communication quality of the user equipment, the burden of a cooperative base station caused by joint transmission is reduced, and a reflection link can still be maintained in the case of cell handover.

Description

Electronic devices, wireless communication methods and computer-readable storage media

This application claims priority to a Chinese patent application filed with the China Patent Office on September 2, 2022, with application number 202211070478.2 and an invention name of "Electronic Devices, Wireless Communication Methods and Computer-Readable Storage Media", the entire content of which is incorporated by reference. incorporated in this application.

Technical field

Embodiments of the present disclosure relate generally to the field of wireless communications, and specifically to electronic devices, wireless communication methods, and computer-readable storage media. More specifically, the present disclosure relates to an electronic device for a base station side, a wireless communication method performed by an electronic device for a base station side in a wireless communication system, and a computer-readable storage medium.

Background technique

Multipoint cooperative technology can be used to solve the interference problem between base stations. Coordinated multipoint techniques may include coordinated beamforming and joint transmission. According to cooperative beamforming technology, in the event of cell interference, the cooperative base station can adjust its beam direction, thereby reducing or avoiding interference to users served by the serving base station. According to the joint transmission technology, the serving base station and the cooperating base station can exchange data between the serving base station and the user, so that the serving base station and the cooperating base station jointly send data to the user or jointly receive data from the user. It can be seen that in cooperative beamforming, in order to reduce or avoid interference, the beam direction of the user in the cooperative base station needs to be adjusted, thereby having a certain impact on the communication quality of the user. In joint transmission, since user data needs to be exchanged between the serving base station and the cooperating base station, the burden on the backhaul link will be increased and the delay will be increased.

Reconfigurable Intelligent Surface (RIS), also known as smart metasurface, has the characteristics of low cost, low energy consumption, programmability and easy deployment. 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 in enhancing the coverage and capacity of future wireless networks, eliminating some coverage blind spots, and serving cell edge users.

The present disclosure hopes to solve at least one of the above technical problems by combining multi-point collaboration technology and RIS technology. In addition, after the introduction of RIS, in the case of cell handover How to maintain the reflection link to ensure communication quality is also one of the technical problems that this disclosure hopes to solve.

Contents of the invention

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

The purpose of this disclosure is to provide an electronic device, a wireless communication method and a computer-readable storage medium that combine multi-point cooperative technology and RIS technology to reduce or avoid inter-cell interference without affecting the communication quality of user equipment. Reduces the burden caused by joint transmission on cooperative base stations, and can maintain reflection links in the event of cell handover.

According to an aspect of the present disclosure, an electronic device for a base station side is provided, including a processing circuit configured to: generate a handover request, where the handover request includes providing services for user equipment within the service range of the electronic device. information of the smart surface; and sending the handover request to the 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 the user equipment with Serve.

According to another aspect of the present disclosure, an electronic device for a base station side is provided, including a processing circuit configured to: determine that transmission between the electronic device and a user equipment served by the electronic device is affected by a neighboring base station. Interference in transmissions between the device and other user equipment served by the adjacent base station equipment; and in response to the interference, configuring a smart surface such that the electronic device assists in conducting data with the user equipment through the smart surface transmission.

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 handover request, the handover request including providing services for user equipment within the service range of the electronic device. information of the smart surface; and sending the handover request to the target base station device of the user equipment, so that after the user equipment is switched to the target base station device, the smart surface continues to be the user equipment. Provide services.

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 transmission between the electronic device and a user equipment served by the electronic device is affected by a neighboring base station. Interference in transmissions between the device and other user equipment served by the adjacent base station equipment; and in response to the interference, configuring a smart surface such that the electronic device assists in conducting data with the user equipment through the smart surface transmission.

According to another aspect of the present disclosure, a computer-readable storage medium is provided, including executable computer instructions that, when executed by a computer, cause the computer to perform the wireless communication method according to the present disclosure.

According to another aspect of the present disclosure, there is provided a computer program that, when executed by a computer, causes the computer to perform the wireless communication method according to the present disclosure.

Using the electronic device, wireless communication method and computer-readable storage medium according to the present disclosure, the information of the smart surface can be included in the handover request, so that the target base station device can know the information of the smart surface serving the user equipment as early as possible. In this way, the reflection link can be maintained even in the case of cell handover.

Using the electronic device, the wireless communication method and the computer-readable storage medium according to the present disclosure, in the event of inter-cell interference, user equipment can be served through reflective links without changing the user equipment served by adjacent base station equipment. beam direction, thereby reducing or avoiding inter-cell interference without affecting the communication quality of the user equipment.

Using the electronic device, the wireless communication method and the computer-readable storage medium according to the present disclosure, the base station device can determine a joint transmission strategy so that the smart surface provides joint transmission in the case of overload of adjacent base station devices, thereby reducing the cooperative base station due to joint transmission. transmission burden. In addition, where joint transmission is already provided by the smart surface, neighboring base station equipment can be requested for further joint transmission, thereby increasing the spatial division gain.

Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are for purposes of illustration only and are not intended to limit the scope of the disclosure.

Description of drawings

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 attached picture:

FIG. 1 is a schematic diagram illustrating a cell handover scenario according to an embodiment of the present disclosure;

2 is a block diagram illustrating an example of a configuration of an electronic device according to an embodiment of the present disclosure;

Figure 3 is a schematic diagram illustrating a scenario where the user equipment is still served by the smart surface after it is switched to the target base station equipment;

Figure 4 is a signaling flow chart illustrating the case where an embodiment according to the present disclosure is applied in a cell handover scenario;

FIG. 5 is a schematic diagram illustrating an interference scenario according to an embodiment of the present disclosure;

Figure 6 is a schematic diagram illustrating a scenario served by a smart surface when user 1 is disturbed;

Figure 7 is a signaling flow chart illustrating the case where an embodiment according to the present disclosure is applied in an interference scenario;

8 is a signaling flow diagram illustrating determination of a reflected link beam direction in the case of a non-transparent smart surface in accordance with an embodiment of the present disclosure;

9 is a signaling flow diagram illustrating determination of reflected link beam direction in the case of a transparent smart surface in accordance with an embodiment of the present disclosure;

FIG. 10 is a schematic diagram illustrating a scenario in which adjacent base station equipment is overloaded according to an embodiment of the present disclosure;

Figure 11 is a schematic diagram illustrating a scenario in which user equipment is served by a smart surface when adjacent base station equipment is overloaded;

Figure 12 is a signaling flow chart illustrating the case where an embodiment according to the present disclosure is applied in a downlink scenario where adjacent base station equipment is overloaded;

Figure 13 is a signaling flow chart illustrating the case where an embodiment according to the present disclosure is applied in an uplink scenario where adjacent base station equipment is overloaded;

Figure 14 is a schematic diagram illustrating a scenario in which joint transmission by neighboring base stations is required when a UE is served by a serving base station and a smart surface according to an embodiment of the present disclosure;

Figure 15 is a schematic diagram illustrating a scenario of joint transmission by adjacent base stations in the downlink when the UE is served by the serving base station and the smart surface;

Figure 16 is a schematic diagram illustrating a scenario of joint transmission by adjacent base stations in the uplink when the UE is served by the serving base station and the smart surface;

FIG. 17 is a signaling flow diagram illustrating the case where an embodiment according to the present disclosure is applied in a joint transmission scenario in downlink;

Figure 18 is a signaling flow diagram illustrating the case where an embodiment according to the present disclosure is applied in the uplink in a joint transmission scenario;

19 is a block diagram showing an example of the configuration of an electronic device according to another embodiment of the present disclosure;

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

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

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

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

Figure 24 is a block diagram showing a first example of a schematic configuration of a gNB;

Figure 25 is a block diagram showing a second example of a schematic configuration of a gNB;

26 is a block diagram showing an example of a schematic configuration of a smartphone; and

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

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 herein described in detail. It should be understood, however, that the description herein of specific embodiments is not intended to limit the disclosure to the precise forms disclosed, but on the contrary, this disclosure is intended to cover all embodiments falling within the spirit and scope of the disclosure. Modifications, Equivalents and Substitutions. It is noted that throughout the several drawings, corresponding reference numbers indicate corresponding parts.

Detailed ways

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

Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those skilled in the art. Numerous specific details are set forth, such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, neither of which should be construed to limit the scope of the present disclosure. In certain example embodiments, well-known processes, well-known structures, and Well known technology.

It will be described in the following order:

Overview;

Configuration examples of electronic equipment;

2.1 Switching scene;

2.2 Interference scenarios;

2.3 Joint transmission scenario;

2.4 Preprocessing operations;

2.5 Modify the embodiment;

3. Method examples;

4. Application examples.

<1.Overview>

As mentioned above, in cooperative beamforming, in order to reduce or avoid interference, the beam direction of the user equipment in the cooperative base station needs to be adjusted, which will have 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 cooperating base station, the burden on the backhaul link will be increased and the delay will be increased. The present disclosure hopes to solve at least one of the above technical problems by combining multi-point collaboration technology and RIS technology. In addition, after the introduction of RIS, how to maintain the reflection link to ensure communication quality in the case of cell handover is also one of the technical problems that this disclosure hopes to solve.

The present disclosure proposes an electronic device in a wireless communication system, a wireless communication method executed by the electronic device in the wireless communication system, and a computer-readable storage medium to combine multi-point collaboration technology and RIS technology so that user equipment is not affected. It reduces or avoids inter-cell interference while maintaining good communication quality, reduces the burden on cooperative base stations due to joint transmission, and can maintain reflection links in the event of cell handover.

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.

The electronic device used on the base station side according to the present disclosure may be, for example, an eNB or a gNB.

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 device, or a vehicle-mounted terminal such as a car navigation device ). The user equipment may also be implemented as a terminal performing machine-to-machine (M2M) communication (also known as a machine type communication (MTC) terminal). Furthermore, the user equipment may be a wireless communication module (such as an integrated circuit module including a single die) installed on each of the above-mentioned terminals.

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 moving object such as an Unmanned Aerial Vehicle (UAV). In addition, smart surfaces can be connected to electronic devices used on the base station side through wired or wireless means. Smart surfaces can pick up signals from the transmitter and reflect them back to the receiver. In addition, in the case where the smart surface is mounted 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 receiver can be on the same side of the smart surface or on different sides of the smart surface.

Further, the electronic equipment and user equipment used on the base station side according to the present disclosure may have beam forming capabilities, that is, beams may be used to send and receive information.

Furthermore, in this disclosure, a direct link means a direct link between the base station equipment and the user equipment, which may include an uplink and a downlink. The reflective link refers to the indirect link between the base station equipment-smart surface-user equipment, which can also include uplinks and downlinks. The expressions "reflective link between the base station and the smart surface" and "reflective link between the smart surface and the user equipment" in this disclosure also mean the above-mentioned indirect link of the base station equipment-smart surface-user equipment. Further, in the present disclosure, the reflection link beam direction may include the beam direction of the smart surface in the reflection link and the beam direction of the user equipment in the reflection link, which may be the transmitting beam direction or the receiving beam direction.

In the following, the embodiments of the present disclosure are described in detail by taking the example that the sender and the receiver are located on the same side of the smart surface. The embodiments of the present disclosure are also applicable to the situation where the sender and the receiver are located on different sides of the smart surface. In the case where the sender and receiver are located on different sides of the smart surface, the indirect link of base station equipment-smart surface-user equipment may be called a transmissive link.

<2. Configuration example of electronic equipment>

FIG. 2 is a block diagram showing an example of the configuration of the electronic device 200 according to the embodiment of the present disclosure. The electronic device 200 here can serve as a base station device in a wireless communication system.

Here, each unit of the electronic device 200 may be included in the processing circuit. It should be noted that the electronic device 200 may include one processing circuit or multiple processing circuits. Further, the processing circuitry may include various discrete functional units to perform various different 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.

The configuration of the electronic device 200 will be described in detail below with respect to handover scenarios, interference scenarios, and joint transmission scenarios.

<2.1 Switching scene>

FIG. 1 is a schematic diagram illustrating a cell handover scenario according to an embodiment of the present disclosure. As shown in Figure 1, UE (User Equipment) is served by serving gNB and smart surface. At a certain moment, the UE moves into the service range of the target gNB, that is, the A3 event occurs. In this case, if the UE hands over to a cell served by the target gNB, the UE will be disconnected from the smart surface. If the target gNB reassigns the intelligent surface to the UE and re-establishes the reflection link after the UE switches to the cell served by the target gNB, the reflection link will be disconnected for a long time, thus affecting the communication quality of the UE.

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

According to embodiments of the present disclosure, the information generation unit 210 may generate various kinds of information, so that the electronic device 200 may utilize the generated information to perform other processing, or send the generated information to other devices. In addition, the electronic device 200 may send information to and/or receive information from other devices through the communication unit 220 .

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

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 after the user equipment is switched to the target base station device, the smart surface continues to provide services for the user equipment. .

It can be seen that, according to embodiments of the present disclosure, the handover request sent to the target base station device may include information about the smart surface that provides services for the user equipment. In this way, the target base station equipment can know the information of the smart surface in advance, so that it can switch to the target base station when the user equipment A reflection link can be established while the station device is connected, so that the service provided by the smart surface of the user device is not interrupted.

According to an embodiment of the present disclosure, the information generation unit 210 may generate a switching request including information of the smart surface if the A3 event is satisfied. Here, any method known in the art can be used to determine whether the A3 event is satisfied, and this disclosure does not limit this. In addition, any method known in the art may be used to determine the target base station device of the user equipment, and this disclosure is not limited thereto.

According to an embodiment of the present disclosure, the electronic device 200 may determine whether to include the information of the smart surface in the handover request according to the location of the smart surface and the location of the target base station device. For example, in the case where 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 may 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 smart surface information may be included in the handover request.

According to embodiments of the present disclosure, the information of the smart surface may include an identification of the smart surface, such as an ID. In this way, the target base station device can learn about the smart surface that provides services to the user equipment, and can determine the beam direction of the smart surface in the reflection link and the beam direction of the user equipment by configuring the smart surface to scan the reflection link beam. This allows the smart surface to continue to provide services to user devices.

According to embodiments 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 can 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)) to represent the reflection direction of the smart surface. In this way, the target base station device does not need to configure a smart surface for reflection link beam scanning, and can directly configure the smart surface using the reflection direction determined based on the handover request.

According to an embodiment of the present disclosure, the electronic device 200 may 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 may generate measurement control information of the reflection link beam scanning process and the electronic device 200 may 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 CSI-RS resources for the smart surface.

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 according to the beam direction configured by the configuration unit 230 data. Further, the configuration unit 230 may configure the smart surface to perform a reflective link beam scanning process. That is to say, the smart surface can reflect CSI-RS to the user equipment through each beam under the configuration of the configuration unit 230.

According to an embodiment of the present disclosure, as shown in FIG. 2 , the electronic device 200 may further include a reflection direction determining unit 240 for determining the reflection direction of the smart surface according to the beam information reported by the user equipment. The beam information may reflect user equipment measurements. The direction of the best quality beam.

According to an embodiment of the present disclosure, as shown in FIG. 2 , the electronic device 200 may further include a prediction unit 250 for predicting the reflected link beam direction between the user equipment and the smart surface based on the location and motion information of the user equipment, so that the information The generating unit 210 may generate measurement control information according to the predicted reflected link beam direction of the user equipment. Here, the movement information may include movement direction and movement speed. That is to say, the prediction unit 250 can predict the location of the user equipment in a future period of time based on the location, movement direction, and movement speed of the user equipment, thereby predicting the direction of the beam that the user equipment may use. Therefore, when configuring the reflection link beam scanning process, the electronic device 200 may configure partial beam scanning instead of omnidirectional beam scanning. In other words, the user equipment can measure signal quality only on part of the beam. This reduces the reflected link beam scanning time.

As mentioned 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, thereby allowing the user equipment to switch to the target base station equipment. Better service quality can be obtained by continuing to provide services by the smart surface after the service scope.

The electronic device 200 may determine whether to determine the reflection direction of the smart surface through a reflection link beam scanning process according to the movement speed of the user equipment. For example, when the movement speed of the user equipment is relatively fast, the electronic device 200 can determine the reflection direction of the smart surface through the reflection link beam scanning process as described above; when the movement speed of the user equipment is relatively slow, the electronic device 200 can The device 200 may 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.

According to an embodiment of the present disclosure, after the electronic device 200 sends the handover request, a handover response may be received from the target base station device. Further, the electronic device 200 may send RRC connection reconfiguration information to the user equipment through the communication unit 220, so that the user equipment sends the RRC connection reconfiguration completion information to the target base station equipment after successfully accessing the target base station equipment. As a result, the user equipment is successfully handed over to the target base station equipment, and the reflection link is successfully established.

FIG. 3 is a schematic diagram illustrating a scenario in which the user equipment is still served by the smart surface after switching to the target base station equipment. In FIGS. 1 and 3 , the serving gNB may be implemented by the 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.

FIG. 4 is a signaling flow chart illustrating a case where an embodiment according to the present disclosure is applied in a cell handover scenario. In Figure 4, the serving base station may be implemented by the electronic device 200. 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 measurement configurations of the current serving cell, neighboring cells, and optional RIS measurement configurations. In step S402, the serving base station controls the RIS to perform a reflection link beam scanning process, for example, configure the RIS with a reference signal resource for reflection link beam scanning, so that the UE can measure the reflection link beam quality. 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, for the target base station to prepare for handover. , wherein the handover request message includes information about the RIS currently providing services to the UE and/or information about recommended candidate RISs that can provide services to the UE after the handover. Specifically, the information of the RIS includes, for example, one or more of the RIS ID, the geographical location of the RIS (such as latitude, longitude, and altitude), the surface orientation of the RIS (such as the angle with the ground), and the optimal beam information of the RIS that provides services to the UE. . In some embodiments, the relevant information of the RIS deployed in the network has been configured to each base station through OAM. Only the RIS ID is exchanged between the source base station and the target base station. The corresponding receiving base station can learn the corresponding RIS by querying the preconfiguration information. Detailed parameters such as geographical location and supported beam directions. In step S405, the target base station determines the candidate RIS based on the handover request message, determines one or more RIS to be used based on its own location information and parameters of the candidate RIS, completes handover preparations, and sends an RRC containing the information to assist the UE in handover to the serving base station. Message handover request response (HANDOVER REQUEST ACKNOWLEDGE). The RRC message contains a parameter to be used by the target base station to serve the UE. Information about one or more RIS, such as RIS ID, RIS beam, and geographical location. In step S406, the serving base station includes the RRC message content from the target base station in the RRC reconfiguration information (eg, RRCReconfiguration) sent to the UE to trigger the handover. The RRC reconfiguration information may include a set of dedicated random access resources, where some of the random access resources are associated with the RIS to be used. The RRC reconfiguration information also includes the association between the random access resources and the specific RIS to assist the UE. Randomly access the target cell through RIS. In step S407, the UE determines the RIS to be used by the target base station and the location of the RIS based on the RRC reconfiguration information, estimates the beam direction that matches the reflection link based on its own location and the RIS location, and uses the associated dedicated random access The resource sends a random access preamble in the beam direction for transmission to the target base station via the reflection link of the RIS. Optionally, when the RIS to be used 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. In addition, another part of the dedicated random access resources can be associated with the SSB of the target cell and/or the UE-specific CSI-RS configuration. While the UE sends the random access preamble via the reflection link of the RIS, it also transmits the random access preamble through another part of the dedicated random access resource. The random access resources and the corresponding SSB or CSI-RS beam direction directly send the random access preamble to the target base station. After the UE accesses the target base station, it sends RRC reconfiguration completion information, such as an RRCReconfigurationComplete message, to the target base station. As a result, the UE establishes a reflection link while accessing the target base station, and with the help of the reflection link, the success rate of random access is improved and the handover delay is shortened. In Figure 4, steps S401 to S403 are not necessary, and the source serving base station can make the handover decision independently. In addition, steps S401 to S403 may be performed periodically, that is, the serving base station may periodically determine the reflection direction of the RIS through the process of reflection link beam scanning, so that the handover request may include the latest determined reflection direction. Optionally, steps S401 to S403 may also be executed at the same time as or after step S404.

As described above, according to embodiments of the present disclosure, the handover request including the information of the smart surface that provides services to the user equipment may be transferred through the Xn interface between base station devices, for example, between gNBs. In this way, the target base station equipment can know the information of the smart surface in advance, so that the reflection link can be established before or at the same time as the user equipment switches to the target base station equipment, so that the service provided by the smart surface of the user equipment is not interrupted. Further, the information of the smart surface may include information related to the reflection direction of the smart surface, so that the target base station device can directly configure the smart surface using the reflection direction determined according to the handover request, thereby saving time for reflection link recommendations. In addition, the electronic device can determine the reflection direction of the smart surface through the reflection link beam scanning process, so that the reflection direction of the smart surface can be determined more accurately. Towards. In summary, in a handover scenario, by applying embodiments of the present disclosure, the reflection link can be maintained after the handover is completed.

<2.2 Interference Scenario>

FIG. 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 located within the service range of the serving base station, and user 2 is located within the service range of the adjacent base station. User 1 and User 2 are both located at the edge of the service range and are close to each other. The serving base station sends a downlink signal to user 1, and the adjacent base station sends a downlink signal to user 2. The downlink signal sent by the adjacent base station to user 2 may be received by user 1, causing interference to user 1.

As mentioned earlier, in cooperative beamforming, in order to reduce or avoid interference, in the situation shown in Figure 5, the beam direction of the downlink signal sent by the adjacent base station to user 2 may be adjusted, thus affecting the communication of user 2. Quality will have a certain impact.

According to an embodiment of the present disclosure, as shown in FIG. 2 , the electronic device 200 may further include an interference determination unit 260 for determining that the transmission between the electronic device 200 and the user equipment is affected by adjacent base station equipment and other adjacent base station equipment services. Interference in transmissions between user equipment.

According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface so that the electronic device 200 assists in data transmission with the user device through the smart surface.

According to an embodiment of the present disclosure, in the case of downlink interference, the interference determination unit 260 may determine the direction of the downlink reception beam of the user equipment according to the direction of the user equipment, the location of the user equipment, the direction of the downlink reception beam of other user equipment, and the location of the other user equipment. It is determined that the downlink transmission between the electronic device 200 and the user equipment is interfered by the downlink transmission between the adjacent base station equipment and other user equipment.

Here, the electronic device 200 may receive the direction of the downlink reception beam of other user equipment and the location of the other user equipment from the adjacent base station device through the communication unit 220 . According to embodiments of the present disclosure, one or more adjacent base station devices serving a base station may transmit the locations of all user equipments within its service range or specific user equipments (such as cooperative users described below) and the direction of the downlink reception beam. to electronic device 200. Therefore, the interference determination unit 260 can determine whether there is an interfered user equipment based on the locations and directions of downlink reception beams of these user equipments, as well as the locations and directions of downlink reception beams of user equipments within the service range of the electronic device 200 . Conversely, the electronic device 200 may also send the location and direction of the downlink receiving beam of all user equipment within its service range or specific user equipment (such as a cooperative user described later) to the adjacent base station equipment for use by the adjacent base station. The device determines whether There is user equipment that is being interfered with.

Figure 6 is a schematic diagram illustrating a scenario served by a smart surface when user 1 is disturbed. In FIG. 6 , the service base station may be implemented by an electronic device 200 . As shown in Figure 6, when the serving base station determines that the downlink signal sent by the adjacent base station to user 2 causes interference to user 1, the serving base station can configure a smart surface to pass the reflection chain of serving base station-smart surface-user 1 route to send a downlink signal to user 1. In this way, there is no need to change the beam direction of user 2, and interference to user 1 is reduced or avoided.

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 for the user device.

According to an embodiment of the present disclosure, the electronic device 200 may configure the smart surface to perform a reflective link beam scanning process (reflective link downlink beam scanning process) to determine the reflective link beam direction of the smart surface and the reflective link beam direction of the user equipment. This process is similar to the reflected link beam scanning process described in the handover scenario. That is, the information generation unit 210 may generate measurement control information of the reflected link beam scan and the electronic device 200 may 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 may configure the smart surface to perform a reflective link beam scanning process. That is to say, the smart surface can reflect CSI-RS to the user equipment through each beam under the configuration of the configuration unit 230. In addition, the reflection direction determining unit 240 can determine the reflection direction of the smart surface according to the beam information reported by the user equipment, and the beam information can reflect the direction of the best quality beam measured by the user equipment.

According to embodiments of the present disclosure, the smart surface may be a smart surface that is transparent to the user device (transparent smart surface), that is, the user device is not aware of the existence of the smart surface. The smart surface can also be a smart surface that is opaque to the user device (non-transparent smart surface), that is, the user device is aware of the existence of the smart surface.

According to an embodiment of the present disclosure, in the case of a non-transparent smart surface, the electronic device 200 may send the 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 position of the smart surface to the user device, so that the user device can determine the approximate beam direction according to the position of the smart surface to save beam scanning. time. In the case of a transparent smart surface, the electronic device 200 may configure the smart surface to perform a reflective link uplink beam scanning process, thereby determining the reflective link beam direction (the beam direction of the smart surface and the beam direction of the user equipment). Here, the electronic device 200 may carry the identity of the smart surface or the location of the smart surface through high-level signaling such as RRC or low-level signaling such as DCI.

Through the above process, the electronic device 200 determines the smart surface for the user equipment and determines the beam direction of the smart surface in the reflection link and the beam direction of the user equipment. This process may be performed every time the electronic device 200 needs to configure a smart surface for the user device, or may be performed after the user device is connected to the electronic device 200 . In the latter case, when the electronic device 200 needs to configure a smart surface for the user device, the existing configuration result can be directly used, thereby saving time.

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

In addition, according to embodiments of the present disclosure, in response to load information received from adjacent base station devices, the configuration unit 230 may also configure the smart surface for transmission. Here, the load information of the adjacent base station reflects that the service of the adjacent base station is subject to excessive interference. That is to say, if the transmission between the adjacent base station and other user equipment within the service range of the adjacent base station is interfered by the transmission between the electronic device 200 and the user equipment, the electronic device 200 can also configure intelligence for the user equipment. Surfaces provide services to user devices by smart surfaces.

FIG. 7 is a signaling flow diagram illustrating a case where an embodiment according to the present disclosure is applied in an interference scenario. In FIG. 7 , the serving base station may be implemented by an electronic device 200 . User 1 is located within the service range of the serving base station, and user 2 is located within the service range of the adjacent base station. As shown in Figure 7, in step S701, the adjacent 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 adjacent base station and user 2 causes interference to 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 equipment. 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 user 1's downlink reception beam (transparent smart surface) to user 1. In step S705, the serving base station Send smart surface configuration information to the RIS to configure the RIS to send information to User 1 using the beam direction of the smart surface in the reflection link. Thus, the serving base station can perform data transmission with user 1 through the reflective link.

8 is a signaling flow diagram illustrating the determination of reflected link beam direction in the case of a non-transparent smart surface in accordance with an embodiment of the present disclosure. That is, FIG. 8 shows the signaling flow of step S703 in FIG. 7 in the case of a non-transparent smart surface. In FIG. 8 , the base station may be implemented by an electronic device 200 . In step S801, the base station determines the RIS for the UE. In step S802, the base station sends the determined ID of the RIS and the CSI-RS resource configuration information in the reflection link downlink beam scanning process for the specific RIS to the UE. In step S803, the base station sends configuration information for executing the reflection link downlink beam scanning process to the RIS. In step S804, the RIS performs a reflection link downlink beam scanning process under the control of the base station. In step S805, the UE reports the beam with the best quality to the base station. From this, the base station can determine the beam direction of the smart surface in the reflecting link.

Figure 9 is a signaling flow diagram illustrating the determination of reflected link beam direction in the case of a transparent smart surface in accordance with an embodiment of the present disclosure. That is, Figure 9 shows the signaling flow of step S703 in Figure 7 in the case of a transparent smart surface. In FIG. 9 , the base station may be implemented by an electronic device 200 . In step S901, the base station determines the RIS for the UE. In step S902, the base station sends the CSI-RS resource configuration information in the downlink beam scanning process of the reflection link for a specific RIS to the UE. In step S903, the base station sends configuration information for executing the reflection link downlink beam scanning process to the RIS. In step S904, the RIS performs a 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 sends the SRS resource configuration information during the uplink beam scanning process of the reflection link to the UE. In step S907, the UE performs a reflection link uplink beam scanning process. Thus, 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.

It is worth noting 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.

As described above, according to embodiments of the present disclosure, information such as the location and beam direction of the user equipment can be transmitted through the Xn interface between base station devices for determining inter-cell interference. In the event that transmissions between the electronic device 200 and the user equipment are interfered by transmissions between neighboring base station equipment and other user equipments, the electronic device 200 may configure the smart surface to perform transmissions to and from the user equipment through reflective links. . In this way, there is no need to change the adjacent base station equipment The beam direction between the device and other user equipment will not affect the communication quality of other user equipment. That is, inter-cell interference can be reduced or avoided without affecting the communication quality of other user equipments. In addition, among known standards and technologies, smart surfaces are designed to solve the technical problem of covering blind areas. In the present disclosure, smart surfaces can reduce or avoid inter-cell interference, thereby improving communication quality.

<2.3 Joint transmission scenario>

FIG. 10 is a schematic diagram illustrating a scenario in which adjacent base station equipment is overloaded according to an embodiment of the present disclosure. As shown in Figure 10, the UE is located within the service range of the serving base station. The serving base station and the adjacent base station send downlink data between the serving base station and the UE to the UE at the same time, or the UE sends the UE and the serving base station to the serving base station and the adjacent base station at the same time. This technology is called joint transmission between uplink data. In this case, the neighboring base station may no longer be able to provide joint transmission services for UEs within the service range of the serving base station due to excessive load or excessive interference.

According to an embodiment of the present disclosure, as shown in FIG. 2 , the electronic device 200 may further include a policy determining unit 270 for determining a transmission policy for joint transmission. For example, in the case that the neighboring base station can no longer provide the joint transmission service for the user, the policy determination unit 270 may determine that the smart surface provides the joint transmission service for the user.

In this case, the configuration unit 230 may configure the smart surface so that the electronic device 200 and the user are transmitted through a reflective link between the smart surface and the user device, and a direct link between the electronic device 200 and the user device, respectively. data between devices.

As described above, according to embodiments of the present disclosure, when neighboring base station equipment cannot provide joint transmission services for user equipment, the smart surface can provide joint transmission services for user equipment. In this way, the burden on adjacent base station equipment can be reduced, and the signaling transmission of the Xn interface between base station equipment can be reduced.

According to an embodiment of the present disclosure, the electronic device 200 may receive load information from a neighboring base station device through the communication unit 220, where the load information reflects excessive interference and/or traffic overload to the service of the neighboring base station. That is to say, when the adjacent base station's business is subject to excessive interference and/or the adjacent base station's traffic is overloaded, the adjacent base station may send load information to the electronic device 200 . In this way, the policy determining unit 270 may configure a smart surface for the user equipment provided with a joint transmission service by the neighboring base station equipment to perform transmission through the reflective link.

According to an embodiment of the present disclosure, users of joint transmission services provided by the adjacent base station equipment There may be one or more devices. The policy determination unit 270 may configure a smart surface for all these user devices, or may determine whether to configure a smart surface for the user device based on data transmission requirements between the electronic device 200 and each user device. That is to say, the policy determining unit 270 may configure smart surfaces for all or part of the user equipments for which the neighboring base station equipment provides joint transmission services, while the remaining user equipments are still provided with joint transmission services by the neighboring base station equipment.

According to an embodiment of the present disclosure, when the data between the electronic device 200 and the user equipment has high speed requirements, and/or when the amount of data between the electronic device 200 and the user equipment is large, the policy determination unit 270 may Confirm that the smart surface is configured for this user device. For example, when the user device is in scenarios such as gaming, XR, live broadcast, watching high-definition videos, etc., the rate requirements for uplink transmission and/or downlink transmission are very high, and the amount of data is large. In this case, the smart surface can be configured for the corresponding user device. According to an embodiment of the present disclosure, the policy determination unit 270 may determine the data transmission requirement according to the cache status and QoS of the user equipment.

According to the embodiments of the present disclosure, the embodiments described in the interference scenario can be used to configure a smart surface for the user equipment and determine the beam direction of the user equipment in the reflection link and the beam direction of the smart surface, and the present disclosure will no longer be used here. Repeat. In addition, after the policy determination unit 270 determines that the smart surface provides services to the user equipment, the electronic device 200 may send at least one of the following to the user equipment: an identification of the smart surface (non-transparent smart surface), a reflected link beam direction of the user equipment (Smart Surface).

According to embodiments of the present disclosure, the reflective link between the smart surface and the user equipment and the direct link between the electronic device 200 and the user equipment may be used to transmit different data streams respectively. Here, the reflective link and the direct link can each transmit one data stream or multiple data streams. There may be no overlap between the data streams transmitted by the reflective link and the direct link. For example, when the user equipment is in an XR scenario, both uplink and downlink transmission involve multiple data streams. Taking the AR scene as an example, the downlink transmission can include two streams of data, one is the I frame data stream, and the other is the P frame data stream. There are four models for uplink transmission in AR scenarios, namely: Model 1: one stream model; Model 2: Two streams model; Model 3A: three Stream 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 the I frame data stream and the reflective link to transmit the P frame data stream, or the electronic device 200 can configure the direct link to transmit the P frame data stream and the reflective link to transmit the P frame data stream. channel to transmit I frame data stream. against In uplink transmission model 3A, the electronic device 200 can be configured to transmit one data stream among the three streams through a direct link, and to transmit the remaining two data streams through a reflective link. Further, the electronic device 200 can determine which link is used to transmit which flow according to the QoS requirements of each data flow 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 quality Good links are used to transmit data flows with high QoS requirements.

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

According to embodiments of the present disclosure, the data flow transmitted by the reflective link between the smart surface and the user equipment, and the data flow transmitted by the direct link between the electronic device 200 and the user equipment may partially overlap. For example, the electronic device 200 may be configured with a direct link to transmit all data flows, and a reflective link to transmit the more important one or those data flows among all the data flows. For example, for the uplink transmission model 3A, the electronic device 200 can be configured to transmit three streams through the direct link and transmit the two more important data streams among the three data streams through the reflection link. In this way, more important data streams can obtain space division gains and at the same time improve resource utilization.

As mentioned above, both the direct link and the reflective link can transmit one or more streams, and the streams transmitted by the direct link and the streams transmitted by the reflective link can completely overlap, partially overlap, or not overlap.

FIG. 11 is a schematic diagram illustrating a scenario in which a UE is served by a smart surface in a case where neighboring base station equipment is overloaded. In FIG. 11 , the service base station may be implemented by an electronic device 200 . As shown in Figure 11, when adjacent base station equipment is overloaded, the smart surface provides joint transmission services for the UE.

FIG. 12 is a signaling flow diagram illustrating the case where an embodiment according to the present disclosure is applied in a scenario where adjacent base station equipment is overloaded in the downlink, and FIG. 13 is a signaling flow diagram illustrating the application of an embodiment in the uplink in a scenario where adjacent base station equipment is overloaded. The signaling flow chart in the case where the neighboring base station equipment is overloaded is applied according to the embodiment of the present disclosure. In Figures 12 and 13, the serving base station can be implemented by the electronic device 200, and the UE is originally provided with joint transmission services by the serving base station and neighboring base stations.

As shown in Figure 12, in step S1201, the neighboring base station determines that the downlink is overloaded, for example, the load is too large or the interference is too large. 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 that it needs to become a UE that transmits through the 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 may be implemented in a manner similar to step S703 in FIG. 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 ID of the smart surface or the direction of the downlink reception beam of the UE 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 adjacent base station and the UE to being served by the direct link between the serving base station and the UE and the serving base station - smart surface - Reflection link service for UE.

As shown in Figure 13, in step S1301, the neighboring 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 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 S1303, the serving base station determines that it needs to become a UE that transmits 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 may be implemented in a manner similar to step S703 in FIG. 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 downlink receiving beam of the UE and the TA (Time Advance) of the reflection link 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 adjacent base station and the UE to being served by the direct link between the serving base station and the UE and the serving base station - smart surface - Reflection link service for UE.

As described above, according to embodiments of the present disclosure, load information may be transferred through the Xn interface between base station devices. That is to say, when adjacent base station equipment cannot provide joint transmission services for user equipment, the smart surface can provide joint transmission services for user equipment. In this way, the burden on adjacent base station equipment can be reduced, and the signaling transmission of the Xn interface between base station equipment can be reduced. In addition, the electronic device 200 may determine which user equipments need to be changed to provide joint transmission services by reflective links based on data transmission requirements. Furthermore, the electronic device 200 can also configure the data stream transmitted on the reflective link and the direct link to achieve spatial division gain.

FIG. 14 is a schematic diagram illustrating a scenario in which joint transmission by neighboring base stations is required 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 performs data transmission with the UE through direct links and reflection links with the UE. In this scenario, the serving base station may find that data transmission performed by the direct link and the reflection link still cannot meet the data transmission requirements.

According to an embodiment of the present disclosure, the policy determination unit 270 may determine that a neighboring base station device needs to be requested to jointly transmit data between the electronic device 200 and the user equipment. For example, the policy determination unit 270 may determine that the adjacent base station equipment needs to be requested to perform joint transmission through a direct link between the adjacent base station equipment and the user equipment, or may determine that the adjacent base station equipment needs to be requested to perform joint transmission through the direct link between the adjacent base station equipment and the user equipment. Direct links between adjacent base station devices and reflective links between smart surfaces to jointly transmit.

According to an embodiment of the present disclosure, the information generation unit 210 may generate request information to request the adjacent base station device to transmit data between the electronic device 200 and the user equipment through a direct link between the adjacent base station device and the user equipment. Further, the electronic device 200 can send the request information to the adjacent base station device through the communication unit 220.

Here, the data between the electronic device 200 and the user equipment may include uplink data or downlink data. That is to say, in the case where 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 can request the adjacent base station equipment to pass between the adjacent base station equipment and the user equipment. The downlink data is jointly transmitted through the direct link between the two. In the case where the user equipment utilizes a direct link and a reflective link to transmit uplink data between the electronic device 200 and the user equipment, the electronic device 200 may request the adjacent base station device to pass the direct link between the adjacent base station device and the user equipment. Jointly transmit the uplink data.

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 that the data between the electronic device 200 and the electronic device 200 is through a direct link between the electronic device 200 and the user device respectively. It is transmitted through direct links between adjacent base station equipment and user equipment, and reflective links between the electronic device 200 and the smart surface. Further, the electronic device 200 may send the link addition notification to the user device through the communication unit 220 .

According to embodiments of the present disclosure, a direct link between the electronic device 200 and the user equipment, a direct link between the adjacent base station equipment and the user equipment, and a direct link between the electronic device 200 and the smart watch The reflective links between planes 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 equipment and the user equipment, and the direct link between the electronic device 200 and the user equipment. Reflective links between smart surfaces can be used to transmit the same multiple data streams. That is to say, similar to the situation of the data flow transmitted by the direct link and the reflective link described above, the electronic device 200 can configure the data flow to be transmitted, so that the direct link transmission between the electronic device 200 and the user equipment The data flow, the data flow transmitted by the direct link between the adjacent base station equipment and the user equipment, and the data flow transmitted by the reflective link between the electronic device 200 and the smart surface may be identical, partially overlapping or non-overlapping. .

According to embodiments of the present disclosure, the request information generated by the information generation unit 210 can also be used to request adjacent base station equipment to pass the direct link between the adjacent base station equipment and the user equipment, and between the adjacent base station equipment and the smart surface. A reflective link is used to transmit data between the electronic device 200 and the user device. Furthermore, the link addition notification can also be used to notify that the data between the user equipment and the electronic device 200 is through the direct link between the electronic device 200 and the user equipment, or the direct link between the adjacent base station equipment and the user equipment. , the reflective link between the electronic device 200 and the smart surface, and the reflective link between the adjacent base station device and the smart surface.

Here, the data between the electronic device 200 and the user device may include downlink data. That is to say, in the case where 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 the adjacent base station equipment to pass between the adjacent base station equipment and the user equipment. The downlink data is jointly transmitted through direct links between adjacent base station devices and reflective links between adjacent base station equipment and smart surfaces.

According to embodiments 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 reflective link between the electronic device 200 and the smart surface, and the adjacent The reflective link between the base station equipment 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 equipment and the user equipment, or the direct link between the electronic device 200 and the user equipment. Reflective links between device 200 and the smart surface, and reflective links between adjacent base station devices and the smart surface, may be used to transmit the same multiple data streams. That is to say, similar to the situation of the data flow transmitted by the direct link and the reflective link described above, the electronic device 200 can configure the data flow to be transmitted, so that the direct link transmission between the electronic device 200 and the user equipment The data flow, the data flow transmitted by the direct link between the adjacent base station equipment and the user equipment, the data flow transmitted by the reflective link between the electronic device 200 and the smart surface, and the data flow between the adjacent base station equipment and the smart surface The data streams transmitted by the reflective links can be identical, partially overlapping, or non-overlapping.

According to an embodiment of the present disclosure, the policy determination unit 270 may determine whether to request joint transmission of neighboring base station devices according to 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 policy determination unit 270 may determine to request neighboring base station devices to jointly transmit. In particular, in the case where 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, the smart surface is shared by the electronic device 200 and the adjacent base station device, the policy determination unit 270 may determine the request phase. Neighboring base station equipment jointly transmits.

According to embodiments of the present disclosure, the electronic device 200 may negotiate control rights over the smart surface with neighboring base station devices. When the electronic device 200 obtains control rights, the smart surface is configured by the configuration unit 230 . When the adjacent base station device obtains control rights, the adjacent base station device configures the smart surface.

According to an embodiment of the present disclosure, after the electronic device 200 obtains control rights, it requests the adjacent base station equipment to pass the direct link between the adjacent base station equipment and the user equipment, and the reflective link between the adjacent base station equipment and the smart surface. In the case of transmitting data between the electronic device 200 and the user equipment, the electronic device 200 may receive the beam of the smart surface in the reflection link between the neighboring base station device and the smart surface from the neighboring base station device through the communication unit 220 direction. Further, the configuration unit 230 may determine the beam direction of 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. The smart surface is configured such that the smart surface reflects data from the electronic device 200 as well as data from adjacent base station devices.

According to an embodiment of the present disclosure, in the case where the adjacent base station device obtains control rights, the electronic device 200 may transmit 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 uses 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 uses the information to configure the smart surface according to the distance between the adjacent base station device and the smart surface. The smart surface is configured with a beam direction of the smart surface in the reflective link and a beam direction of the smart surface in the reflective link between the electronic device 200 and the smart surface such that the smart surface is capable of reflecting data from the electronic device 200 and Data from adjacent base station equipment.

Figure 15 is a diagram illustrating that in the downlink, the UE is served by the serving base station and the smart surface. Schematic diagram of the scenario where adjacent base stations perform joint transmission. In FIG. 15 , the service base station may be implemented by an electronic device 200 . As shown in Figure 15, in downlink transmission, the serving base station sends data to the UE through the direct link ① and the reflection link ②. Here, the smart surface is located at the junction of the service range of the serving base station and the service range of the adjacent base station. The serving base station can request the adjacent base station to jointly transmit through the direct link ③, or it can request the adjacent base station to jointly transmit through the direct link ③ and the reflection link ④.

Figure 16 is a schematic diagram illustrating a scenario of joint transmission by neighboring base stations in the uplink when the UE is served by the serving base station and the smart surface. In FIG. 16 , the service base station may be implemented by an electronic device 200 . As shown in Figure 16, in uplink transmission, the UE sends data to the serving base station through the direct link ① and the reflection link ②. Here, the smart surface is located at the junction of the service range of the serving base station and the service range of the adjacent base station. The serving base station can request neighboring base stations to jointly transmit through the direct link ③.

FIG. 17 is a signaling flow diagram illustrating a case where an embodiment according to the present disclosure is applied in a joint transmission scenario in downlink. In Figure 17, the serving base station may be implemented by the electronic device 200, and the UE is served by the serving base station and the RIS. As shown in Figure 17, in step S1701, the neighboring base station and the serving base station negotiate the control rights over the RIS serving the UE. First case: When the serving base station obtains control, in step S1702, the serving base station sends request information to the adjacent base station to request the adjacent base station to perform joint transmission through the direct link. In step S1703, the serving base station sends configuration information to the RIS, so that the RIS reflects the data from the serving base station. In step S1704, the serving base station sends a link addition notification to the UE to inform the UE that the data passes through the direct link between the serving base station and the UE, the direct link between the adjacent base station and the UE, and the direct link between the serving base station and the RIS. transmitted through reflective links. Second case: When the serving base station obtains control, in step S1705, the serving base station sends request information to the adjacent base station to request the adjacent base station to perform joint transmission through the direct link and the reflection link. In step S1706, the adjacent base station sends the beam direction of the RIS in the reflection link between the adjacent 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 adjacent 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 the configuration to the RIS. The RIS sends configuration information so that the RIS reflects data from the serving base station and neighboring base stations. In step S1708, the serving base station sends a link addition notification to the UE to inform the UE that the data passes through the direct link between the serving base station and the UE, the direct link between the adjacent base station and the UE, or the serving base station and the RIS. reflection links, and reflection links between adjacent base stations and RIS Transmission. Third situation: When the neighboring base station obtains control, in step S1709, the serving base station sends request information to the neighboring base station to request the neighboring base station to perform joint transmission through the direct link. In step S1710, the serving base station sends the beam direction of the RIS in the reflection link of the serving base station-RIS-UE to the adjacent base station. In step S1711, the neighboring base station sends configuration information to the RIS, so that the RIS reflects the data from the serving base station. In step S1712, the serving base station sends a link addition notification to the UE to inform the UE that the data passes through the direct link between the serving base station and the UE, the direct link between the adjacent base station and the UE, and the direct link between the serving base station and the RIS. transmitted through reflective links. Fourth situation: When the neighboring base station obtains control, in step S1713, the serving base station sends request information to the neighboring base station to request the neighboring base station to perform joint transmission through the direct link and the reflection link. In step S1714, the serving base station sends the beam direction of the RIS in the reflection link of the serving base station-RIS-UE to the adjacent 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 reflection link of the neighboring base station-RIS-UE and the beam direction of the RIS in the reflection link of the serving base station-RIS-UE, and Configuration information is sent to the RIS to cause the RIS to reflect data from the serving base station and neighboring base stations. In step S1716, the serving base station sends a link addition notification to the UE to inform the UE that the data passes through the direct link between the serving base station and the UE, the direct link between the adjacent base station and the UE, or the serving base station and the RIS. The reflection link between the adjacent base station and the RIS is transmitted.

FIG. 18 is a signaling flow diagram illustrating a case where an embodiment according to the present disclosure is applied in the uplink in a joint transmission scenario. In Figure 18, the serving base station may be implemented by the electronic device 200, and the UE is served by the serving base station and the RIS. As shown in Figure 18, in step S1801, the neighboring base station and the serving base station negotiate the control rights over the RIS serving the UE. First case: When the serving base station obtains control, in step S1802, the serving base station sends request information to the adjacent base station to request the adjacent base station to perform joint transmission through the direct link. In step S1803, the serving base station sends configuration information to the RIS, so that the RIS reflects the data from the UE to the serving base station. In step S1804, the serving base station sends a link addition notification to the UE to inform the UE that the data passes through the direct link between the serving base station and the UE, the direct link between the adjacent base station and the UE, and the direct link between the serving base station and the RIS. transmitted through reflective links. In step S1805, the serving base station sends a monitoring notification to the neighboring base station, so that the neighboring base station forwards the uplink data from the UE to the serving base station for joint detection. Second case: When the neighboring base station obtains control, in step S1806, the serving base station sends request information to the neighboring base station to request the neighboring base station to perform joint transmission through the 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 adjacent base station. In step S1808, the neighboring base station sends configuration information to the RIS, so that the RIS reflects 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 passes through the direct link between the serving base station and the UE, the direct link between the adjacent base station and the UE, and the direct link between the serving base station and the RIS. transmitted through reflective links. In step S1810, the serving base station sends a monitoring notification to the neighboring base station, so that the neighboring base station forwards the uplink data from the UE to the serving base station for joint detection.

As described above, according to embodiments of the present disclosure, the request for joint transmission may be transmitted through the Xn interface between base station devices. That is to say, when the user equipment is already served by the serving base station and the smart surface, if the data transmission requirements are still unable to be met, the serving base station can request the adjacent base station for joint transmission, thereby increasing the transmission path and improving information transmission. diversity gain and security. Further, the serving base station can request the adjacent base station to perform joint transmission through the direct link, or it can also request the adjacent base station to perform joint transmission through the direct link and the reflection link. Furthermore, in the case where the smart surface is located at the junction of the service range of the serving base station and the service range of the adjacent base station, the serving base station and the adjacent base station can negotiate control rights.

<2.4 Preprocessing operations>

According to embodiments of the present disclosure, the user equipment described above may be any user equipment within the service range of the electronic device 200 . That is to say, when any user equipment within the service range of the electronic device 200 is in a switching scenario, the operation can be performed according to the embodiment described in Section 2.1; when any user equipment within the service range of the electronic device 200 is in an interference scenario When any user equipment within the service range of the electronic device 200 is in a joint transmission scenario, the operation may be performed according to the embodiment described in Section 2.3.

According to embodiments of the present disclosure, the user equipment described in the foregoing may also be a specific user equipment within the service range of the electronic device 200. For example, the user equipment may be a cooperating user within the service range of the electronic device 200 , and the cooperating user is located at the edge of the service range of the electronic device 200 .

As shown in FIG. 2 , the electronic device 200 may further include a multi-point collaboration configuration unit 280 for determining collaborative users. For example, the multi-point collaboration configuration unit 280 may determine the collaboration user according to the location of the user equipment within the service range of the electronic device 200 . For another example, the user equipment can measure the channel quality between the user equipment and the electronic device 200 and the channel quality between the user equipment and multiple adjacent base stations. The channel quality between the devices is measured and the measurement results are sent to the electronic device 200. The multi-point cooperation configuration unit 280 determines the cooperating user according to the measurement results reported by the user equipment. Specifically, in the case where the difference between the channel quality between the user equipment and the electronic device 200 and the channel quality between the user equipment and the adjacent base station equipment is less than a predetermined threshold, the coordinated multi-point configuration unit 280 may determine that the user equipment is Collaborating users. Here, channel quality can be represented by parameters such as RSRP (Reference Signal Receiving Power).

According to an embodiment of the present disclosure, the multi-point cooperative configuration unit 280 may also determine a cooperative base station device for the user equipment. In the case where the user equipment described above is any user equipment within the service range of the electronic device 200, the multi-point cooperation configuration unit 280 may determine a cooperative base station device for each user equipment within the service range of the electronic device 200. In the case where the user equipment described above is a cooperating user within the service range of the electronic device 200, the multi-point cooperation configuration unit 280 may determine the cooperating base station device for each cooperating user.

According to embodiments of the present disclosure, in a joint transmission scenario, the cooperating base station equipment may be a neighboring base station equipment that provides joint transmission services for user equipment. That is to say, in the case that the cooperating 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 provides the joint transmission service for the user equipment. Further, in the case where the electronic device 200 performs data transmission with the UE through the direct link and the reflection link with the UE and still cannot meet the data transmission requirements, the electronic device 200 may request the cooperative base station device to be the user equipment. Provides joint transmission services.

According to embodiments of the present disclosure, the cooperating base station device may be a neighboring base station device specific to the electronic device 200 . For example, all user equipments within the service range of the electronic device 200 have the same cooperating base station equipment. Optionally, the cooperative base station equipment may also be a neighboring base station equipment specific to the user equipment. For example, the multi-point cooperative configuration unit 280 may determine, for each user equipment, the cooperative base station device of the user equipment. Furthermore, the cooperative base station device may be one or multiple.

According to an embodiment of the present disclosure, the multi-point cooperative configuration unit 280 may determine each user equipment (or each cooperative user) according to the channel quality between the user equipment (or each cooperative user) and a plurality of adjacent base station devices. Collaborating base station equipment that provides services. For example, the multi-point cooperative configuration unit 280 may determine the neighboring base station device with the best channel quality among multiple neighboring base station devices as the cooperative base station device for the user equipment.

According to an embodiment of the present disclosure, the multi-point cooperation configuration unit 280 can also pre-set The user device (or each collaborating user) determines the smart surface that provides services to the user device (or the collaborating user). Specifically, the multi-point cooperation configuration unit 280 may determine a smart surface that provides services to the user equipment according to the location of the user equipment. For example, the multi-point cooperation configuration unit 280 may determine the smart surface closest to the user equipment within the service range of the electronic device 200 as the smart surface serving the user equipment.

According to an embodiment of the present disclosure, the multi-point collaboration configuration unit 280 may determine, for each user equipment (or each collaborative user), the electronic device 200 - the smart surface serving the user equipment - the intelligence in the reflective link of the user equipment. The beam direction of the surface and the beam direction of the user equipment.

As described above, the electronic device 200 may determine the user equipment required to perform embodiments of the present disclosure. Optionally, for each user equipment (or each cooperating user), the electronic device may predetermine the cooperating base station device. In addition, for each user equipment (or each collaborative user), the electronic device 200 can also predetermine the beam direction of the smart surface and the smart surface in the reflection link and the beam direction of the user equipment. This process may occur, for example, after the user equipment accesses the electronic device 200 . That is, the processes described in FIGS. 8 and 9 can be performed in advance. In this way, for example, in a handover scenario it is necessary to determine the beam direction of a smart surface, in an interference scenario it is necessary to determine a smart surface for user 1 and determine the reflection link beam direction, and in a joint transmission scenario When it is necessary to determine the smart surface for the user equipment and determine the direction of the reflected link beam, the above predetermined information can be directly used, thereby saving time and signaling overhead.

<2.5 Modified Example>

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.

19 is a block diagram showing an example of the configuration of an electronic device according to another embodiment of the present disclosure. The electronic device 1900 depicted in FIG. 19 is an electronic device for performing operations in an interference scenario.

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 .

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 by transmission between the adjacent base station device and other user equipment served by the adjacent base station device.

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

According to an embodiment of the present disclosure, the interference determination unit 260 may determine the relationship between the electronic device 1900 and the user equipment according to the direction of the downlink reception beam of the user equipment, the location of the user equipment, the direction of the downlink reception beam of other user equipment, and the location of the other user equipment. The downlink transmission between adjacent base station equipment and other user equipment is interfered by the downlink transmission.

According to an embodiment of the present disclosure, the electronic device 1900 may receive the direction of the downlink reception beam of other user equipment and the location of the other user equipment from the adjacent base station device through the communication unit 220.

According to an embodiment of the present disclosure, the electronic device 1900 may send the identification of the smart surface or the direction of the downlink reception 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.

According to embodiments of the present disclosure, the configuration unit 230 may configure the smart surface to perform a reflective link beam scanning process. As shown in Figure 19, the electronic device 1900 may also include a reflection direction determining unit 240, configured to determine the reflection direction of the smart surface according to the beam information reported by the user equipment. The beam information may reflect the best quality beam measured by the user equipment. direction.

Here, the electronic device 1900 is an electronic device used to perform operations in an interference scenario, so all the embodiments described in the previous section 2.2 can be applied here. In addition, the communication unit 220, the configuration unit 230, the reflection direction determination unit 240 and the interference determination unit 260 in FIG. 19 may perform the same as the communication unit 220, the configuration unit 230, the reflection direction determination unit 240 and the interference determination unit 260 in FIG. 2 function.

20 is a block diagram showing an example of the 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 for performing operations in the scenario of joint transmission.

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 .

According to an embodiment of the present disclosure, the policy determining unit 270 may determine a transmission policy for joint transmission. The transmission strategy may include: transmitting the electronic device 2000 to the user through a direct link between the electronic device 2000 and the user device and a reflective link between the smart surface and the user device. Data between devices; electronic devices are transmitted through direct links between the electronic device 2000 and the user equipment, reflective links between the smart surface and the user equipment, and direct links between adjacent base station equipment and the user equipment Data between 2000 and user equipment; through the direct link between electronic equipment 2000 and user equipment, the reflective link between electronic equipment 2000 and user equipment, the direct link between adjacent base station equipment and user equipment, and reflective links between adjacent base station equipment and user equipment to transmit data between the electronic device 2000 and the user equipment.

According to an embodiment of the present disclosure, the configuration unit 230 may configure the smart surface so that communication is performed via the communication unit 220 , respectively 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. Transfer data between the electronic device 2000 and the user device.

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 the adjacent base station device, where the load information reflects that the service of the adjacent base station device is subject to excessive interference and/or Business overload situation.

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

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 identification of the smart surface, a reflected link beam direction of the user equipment.

According to embodiments of the present disclosure, the reflective link between the smart surface and the user equipment, and the direct link between the electronic device 2000 and the user equipment are respectively used to transmit different data streams; or between the smart surface and the user equipment Reflective links, as well as direct links between electronic device 2000 and user equipment, are used to transmit the same multiple data streams.

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

According to embodiments 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, and the reflective link between the electronic device 2000 and the smart surface are respectively used. 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 equipment and the user equipment, and the reflective link between the electronic device 2000 and the smart surface are used for transmission Multiple streams of the same data.

According to an embodiment of the present disclosure, the request information may also be used to request the adjacent base station device to transmit through the direct link between the adjacent base station device and the user equipment, and the reflective link between the adjacent base station device and the smart surface. The data between the electronic device 2000 and the user device, and the link addition notification can also notify the user device that the data between the user device and the electronic device 2000 is through the direct link or adjacent link between the electronic device 2000 and the user device respectively. It is transmitted through the direct link between the base station equipment and the user equipment, the reflective link between the electronic device 2000 and the smart surface, and the reflective link between the adjacent base station equipment and the smart surface.

According to embodiments 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 reflective link between the electronic device 2000 and the smart surface, and the adjacent The reflective links between the base station equipment 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 equipment and the user equipment, the electronic equipment Reflective links between 2000 and the smart surface, and reflective links between adjacent base station equipment and the smart surface, are used to transmit the same multiple data streams.

According to embodiments of the present disclosure, the configuration unit 230 may configure the smart surface to perform a reflective link beam scanning process. As shown in Figure 20, the electronic device 2000 may also include a reflection direction determining unit 240, configured to determine the reflection direction of the smart surface according to the beam information reported by the user equipment. The beam information may reflect the best quality beam measured by the user equipment. direction.

Here, the electronic device 2000 is an electronic device used to perform operations in the scenario of joint transmission, so the embodiments described in the previous section 2.3 can all be applied here. In addition, the communication unit 220, the configuration unit 230, the reflection direction determination unit 240, the information generation unit 210 and the policy determination unit 270 in FIG. The generation unit 210 and the policy determination unit 270 perform the same function.

<3. Method Example>

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

FIG. 21 is a flowchart illustrating a wireless communication method performed by the electronic device 200 in the wireless communication system according to an embodiment of the present disclosure.

As shown in Figure 21, in step S2110, a switching request is generated, and the switching request includes information about a smart surface that provides services to user equipment within the service range of the electronic device 200.

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.

Preferably, the information of the smart surface includes an identification of the smart surface.

Preferably, the information about the smart surface also includes information related to the reflection direction of the smart surface.

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

Preferably, the wireless communication method further includes: predicting a reflected link beam direction between the user equipment and the smart surface based on the location and motion information of the user equipment; and determining measurement control information based on the predicted reflected link beam direction of the user equipment.

Preferably, the wireless communication method further includes: determining that transmission between the electronic device and the user equipment is interfered by transmission between the adjacent base station device and other user equipment served by the adjacent base station device; and configuring the smart surface so that the electronic device 200 assists in data transmission with user devices through smart surfaces.

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

Preferably, the wireless communication method further includes: receiving the direction of the downlink reception beam of other user equipment and the location of the other user equipment from the adjacent base station equipment.

Preferably, the wireless communication method further includes: sending the identification of the smart surface or the direction of the downlink receiving beam of the user equipment to the user equipment, so that the user equipment receives the information through the smart surface. Downstream information.

Preferably, the wireless communication method further includes: configuring the smart surface so that the electronic device 200 and the user device are transmitted through a reflective link between the smart surface and the user device, and a direct link between the electronic device 200 and the user device, respectively. data between.

Preferably, the wireless communication method further includes: configuring the smart surface for transmission in response to load information received from adjacent base station equipment, wherein the load information of the adjacent base station reflects excessive interference to the business of the adjacent base station and/ Or the business volume is overloaded.

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

Preferably, the wireless communication method further includes: sending at least one of the following to the user equipment: an identification of the smart surface and a reflected link beam direction of the user equipment.

Preferably, the reflective link between the smart surface and the user equipment and the direct link between the electronic device 200 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 a direct link between the electronic device 200 and the user device is used to transmit the same multiple data streams.

Preferably, the wireless communication method further 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 equipment through a direct link between the adjacent base station device and the user equipment. data; and generating and sending a link addition notification to the user equipment to notify the user equipment that the data between the user equipment and the electronic device 200 is respectively through the direct link between the electronic device 200 and the user equipment, the adjacent base station equipment and transmitted via direct links between user devices and reflective links between the electronic device 200 and the smart surface.

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

Preferably, the wireless communication method further includes: generating and sending request information to adjacent base station equipment to request the adjacent base station equipment to pass the direct link between the adjacent base station equipment and the user equipment, and the adjacent base station equipment and the smart surface respectively. reflective link between transmit electronic devices 200 data between the user 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 through a direct link between the electronic device 200 and the user device respectively. , the direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device 200 and the smart surface, and the reflective link between the adjacent base station equipment and the smart surface.

Preferably, the direct link between the electronic device 200 and the user equipment, the direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device 200 and the smart surface, and the direct link between the adjacent base station equipment and the smart surface. The reflective links between surfaces 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 equipment and the user equipment, the electronic device 200 and the smart surface Reflective links between adjacent base station devices and smart surfaces are used to transmit the same multiple data streams.

Preferably, the user equipment is a cooperating user within the service range of the electronic device 200, and the cooperating user is located at the edge of the service range of the electronic device 200.

Preferably, the wireless communication method further includes: determining a cooperating base station device that provides services to the cooperating user according to channel quality between the cooperating user and multiple adjacent base station devices.

Preferably, the wireless communication method further includes: determining a smart surface that provides services to the cooperating user according to the location of the cooperating user.

According to an embodiment of the present disclosure, the subject that performs the above method may be an electronic device 200 according to an embodiment of the present disclosure, so all the previous embodiments about the electronic device 200 are applicable here.

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.

FIG. 22 is a flowchart illustrating a wireless communication method performed by the electronic device 1900 in the wireless communication system according to an embodiment of the present disclosure.

As shown in Figure 22, in step S2210, it is determined that the transmission between the electronic device 1900 and the user equipment is interfered by the transmission between the adjacent base station equipment and other user equipment served by the adjacent base station equipment.

Next, in step S2220, in response to the interference, the smart surface is configured so that the electronic device 1900 assists in data transmission with the user device through the smart surface.

Preferably, determining that transmission between the electronic device 1900 and the user equipment is interfered includes: The downlink transmission between the electronic device 1900 and the user equipment is determined based on the direction of the downlink receiving beam of the user equipment, the location of the user equipment, the direction of the downlink receiving beam of other user equipment, and the locations of other user equipment. Interference in downlink transmissions between user equipment.

Preferably, the wireless communication method further includes: sending the identification of the smart surface or the direction of the downlink receiving beam of the user equipment to the user equipment, so that the user equipment receives downlink information through the smart surface.

According to an embodiment of the present disclosure, the subject that performs the above method may be an electronic device 1900 according to an embodiment of the present disclosure, so all the previous embodiments about the electronic device 1900 are applicable here.

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.

FIG. 23 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.

As shown in Figure 23, in step S2310, a joint transmission strategy is determined. Strategies include, but are not limited to: transmitting data between the electronic device 2000 and the user device through direct links between the electronic device 2000 and the user device and reflective links between the smart surface and the user device; Direct links between devices, reflective links between smart surfaces and user equipment, and direct links between adjacent base station equipment and user equipment are used to transmit data between the electronic device 2000 and the user equipment; through the electronic equipment The direct link between the electronic device 2000 and the user equipment, the reflective link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station equipment and the user equipment, and the reflection between the adjacent base station equipment and the user equipment. link to transmit data between the electronic device 2000 and the user device.

Next, in step S2320, the smart surface is configured so that the transmission between the electronic device 2000 and the user device is respectively through the reflective link between the smart surface and the user device and the direct link between the electronic device 2000 and the user device. data between.

Preferably, the wireless communication method further includes: in response to load information received from adjacent base station equipment, configuring the smart surface for transmission, wherein the load information of the adjacent base station reflects the corresponding The adjacent base station's services are subject to excessive interference and/or the traffic is overloaded.

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

Preferably, the reflective link between the smart surface and the user equipment and the direct link between the electronic device 2000 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 a direct link between the electronic device 2000 and the user device is used to transmit the same multiple data streams.

Preferably, the wireless communication method further includes: generating and sending request information to an adjacent base station device to request the adjacent base station device to transmit the data between the electronic device 2000 and the user equipment through a direct link between the adjacent base station device and the user equipment. data; and generating and sending a link addition notification to the user equipment to notify the user equipment that the data between the user equipment and the electronic device 2000 is through the direct link between the electronic device 2000 and the user equipment, the adjacent base station equipment and transmitted via direct links between user devices and reflective links between the electronic device 2000 and the smart surface.

Preferably, the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station equipment and the user equipment, and the reflective link between the electronic device 2000 and the smart surface are respectively used to transmit different data. flow; or the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station equipment and the user equipment, and the reflective link between the electronic device 200 and the smart surface are used to transmit the same multiple data flow.

Preferably, the wireless communication method further includes: generating and sending request information to adjacent base station equipment to request the adjacent base station equipment to pass the direct link between the adjacent base station equipment and the user equipment, and the adjacent base station equipment and the smart surface respectively. to transmit data between the electronic device 2000 and the user device; and generate and send 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 the electronic device 2000 respectively. The direct link between the device 2000 and the user equipment, the direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device 2000 and the smart surface, and the direct link between the adjacent base station equipment and the smart surface. Transmitted via a reflective link.

Preferably, the direct link between the electronic device 2000 and the user equipment, the direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device 2000 and the smart surface, And the reflective links between adjacent base station equipment 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 equipment and the user equipment , the reflective link between the electronic device 2000 and the smart surface, and the reflective link between the adjacent base station device and the smart surface are used to transmit the same multiple data streams.

According to an embodiment of the present disclosure, the subject that performs the above method may be an electronic device 2000 according to an embodiment of the present disclosure, so all the foregoing embodiments about the electronic device 2000 are applicable here.

<4.Application example>

The technology of the present disclosure can be applied to a variety of products.

For example, the base station equipment can be implemented as a macro eNB and a small eNB, and can also be implemented as any type of gNB (base station in the 5G system). A small eNB may be an eNB covering a smaller cell than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, the base station may be implemented as any other type of base station, such as NodeB and Base Transceiver Station (BTS). The 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 wireless heads (RRHs) disposed at a different place from the main body.

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 a vehicle-mounted terminal such as a car navigation device. The user equipment may also be implemented as a terminal performing machine-to-machine (M2M) communication (also known as a machine type communication (MTC) terminal). Furthermore, the user equipment may be a wireless communication module (such as an integrated circuit module including a single die) installed on each of the above-mentioned user equipments.

(First application example)

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

Antennas 2410 each include a single or multiple antenna elements, such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna, and are used by base station device 2420 to transmit and receive wireless signals. As shown in Figure 24, gNB 2400 may include multiple antennas 2410. For example, multiple antennas 2410 may be compatible with multiple frequency bands used by gNB 2400. Although Figure 24 An example is shown where the gNB 2400 includes multiple antennas 2410, but the gNB 2400 may also include a single antenna 2410.

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

The controller 2421 may be, for example, a CPU or a DSP, and operates various functions of higher layers 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 delivers the generated packets via the network interface 2423. The controller 2421 may bundle data from multiple baseband processors to generate bundled packets, and deliver the generated bundled packets. The controller 2421 may have logical functions to perform controls such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby gNB or core network nodes. 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.

The network interface 2423 is a communication interface used to connect the base station device 2420 to the core network 2424. Controller 2421 may communicate with core network nodes or additional gNBs via network interface 2423. In this case, the gNB 2400 and the core network node or other gNBs may be connected to each other through logical interfaces such as the S1 interface and the X2 interface. The network interface 2423 may also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If network interface 2423 is a wireless communication interface, network interface 2423 may use a higher frequency band for wireless communication than the frequency band used by wireless communication interface 2425.

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 cell of the gNB 2400 via the antenna 2410 . Wireless communication interface 2425 may generally include, for example, a baseband (BB) processor 2426 and RF circuitry 2427. The BB processor 2426 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform layers such as L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol ( Various types of signal processing for PDCP)). Instead of the controller 2421, the BB processor 2426 may have part or all of the above logical functions. The BB processor 2426 may be a memory that stores a communication control program, or a module including a processor and related circuitry configured to execute the program. The update program can change the functionality of the BB processor 2426. The module may be a card or blade that plugs into a slot in the base station device 2420. Alternatively, the module may be a chip mounted on a card or blade. Meanwhile, the RF circuit 2427 may include, for example, a mixer, filter, and amplifier, and may be Line 2410 to transmit and receive wireless signals.

As shown in FIG. 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 gNB 2400. As shown in Figure 24, wireless communication interface 2425 may include a plurality of RF circuits 2427. For example, multiple RF circuits 2427 may be compatible with multiple antenna elements. Although FIG. 24 shows 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.

(Second application example)

25 is a block diagram illustrating a second example of a schematic configuration of a gNB to which the technology of the present disclosure may be applied. gNB 2530 includes one or more antennas 2540, base station equipment 2550 and RRH 2560. RRH 2560 and each antenna 2540 may be connected to each other via RF cables. The base station equipment 2550 and the RRH 2560 may be connected to each other via high-speed lines such as fiber optic cables.

Antennas 2540 each include a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and are used by RRH 2560 to transmit and receive wireless signals. As shown in Figure 25, gNB 2530 may include multiple antennas 2540. For example, multiple antennas 2540 may be compatible with multiple frequency bands used by gNB 2530. Although FIG. 25 shows an example in which gNB 2530 includes multiple antennas 2540, gNB 2530 may also include a single antenna 2540.

The 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. The controller 2551, the memory 2552, and the network interface 2553 are the same as the controller 2421, the memory 2422, and the network interface 2423 described with reference to FIG. 24. The network interface 2553 is a communication interface used to connect the base station device 2550 to the core network 2554.

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 a BB processor 2556, for example. The BB processor 2556 is the same as 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 Figure 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 gNB 2530. although Although FIG. 25 shows 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.

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 used to connect the base station device 2550 (wireless communication interface 2555) to the communication in the above-mentioned high-speed line of the RRH 2560.

RRH 2560 includes a connection interface 2561 and a wireless communication interface 2563.

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 used for communication in the above-mentioned high-speed line.

Wireless communication interface 2563 transmits and receives wireless signals via antenna 2540. Wireless communication interface 2563 may generally include RF circuitry 2564, for example. RF circuitry 2564 may include, for example, mixers, filters, and amplifiers, and transmit and receive wireless signals via antenna 2540. As shown in Figure 25, wireless communication interface 2563 may include a plurality of RF circuits 2564. For example, multiple RF circuits 2564 may support multiple antenna elements. Although FIG. 25 shows an example in which the wireless communication interface 2563 includes a plurality of RF circuits 2564, the wireless communication interface 2563 may also include a single RF circuit 2564.

In the gNB 2400 and gNB 2530 shown in FIG. 24 and FIG. 25 , by using the information generation unit 210, the configuration unit 230, the reflection direction determination unit 240, the prediction unit 250, the interference determination unit 260, and the strategy determination unit described in FIG. 2 270 and the multi-point cooperative configuration unit 280 may be implemented by the controller 2421 and/or the controller 2551. At least part 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 can perform generating various information, configuring the smart surface, determining the beam direction of the reflective link, predicting the beam direction of the reflective link, and determining interference by executing instructions stored in the corresponding memory. , determine the strategy of joint transmission and determine the function of configuration information related to multipoint cooperation.

(First application example)

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

The processor 2601 may be, for example, a CPU or a system on a chip (SoC), and controls 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 memory and hard disk. 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 .

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. Sensors 2607 may include a group of sensors such as measurement sensors, gyroscope sensors, geomagnetic sensors, and acceleration sensors. The microphone 2608 converts the sound input to the smartphone 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 a 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 an output image of the smartphone 2600 . The speaker 2611 converts the audio signal output from the smartphone 2600 into sound.

The wireless communication interface 2612 supports any cellular communication scheme such as LTE and LTE-Advanced, and performs wireless communication. Wireless communication interface 2612 may generally include, for example, BB processor 2613 and RF circuitry 2614. The BB processor 2613 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, RF circuitry 2614 may include, for example, mixers, filters, and amplifiers, and transmit and receive wireless signals via 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 Figure 26, the wireless communication interface 2612 may include multiple BB processors 2613 and multiple RF circuits 2614. Although FIG. 26 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.

Furthermore, in addition to the cellular communication scheme, the wireless communication interface 2612 may support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes. In this case, wireless communication interface 2612 may include BB processor 2613 and RF circuit 2614 of the wireless communication solution.

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

Antennas 2616 each include a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and are used by wireless communication interface 2612 to transmit and receive wireless signals. As shown in Figure 26, smartphone 2600 may include multiple antennas 2616. Although FIG. 26 shows an example in which smartphone 2600 includes multiple antennas 2616, smartphone 2600 may also include a single antenna 2616.

Additionally, 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.

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 to each other. connect. The battery 2618 provides power to the various blocks of the smartphone 2600 shown in Figure 26 via feeders, which are partially shown in the figure as dashed lines. The auxiliary controller 2619 operates the minimum necessary functions of the smartphone 2600 in the sleep mode, for example.

(Second application example)

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 media 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 battery 2738.

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

The GPS module 2724 measures the location (such as latitude, longitude, and altitude) of the car navigation device 2720 using GPS signals received from GPS satellites. Sensors 2725 may include a set of sensors such as gyroscope sensors, geomagnetic sensors, and air pressure sensors. Data interface 2726 It is connected to, for example, the in-vehicle network 2741 via a terminal not shown, and data generated by the vehicle (such as vehicle speed data) is acquired.

The content player 2727 reproduces content stored in storage media, such as CDs and DVDs, which are inserted into the storage media interface 2728 . The input device 2729 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 2730, and receives an operation or information input from a user. The display device 2730 includes a screen such as an LCD or an OLED display, and displays an image of a navigation function or reproduced content. The speaker 2731 outputs the sound of the navigation function or the reproduced content.

The wireless communication interface 2733 supports any cellular communication scheme such as LTE and LTE-Advanced, and performs wireless communication. Wireless communication interface 2733 may generally include, for example, BB processor 2734 and RF circuitry 2735. The BB processor 2734 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communications. Meanwhile, the RF circuit 2735 may include, for example, a mixer, filter, and amplifier, and transmit and receive wireless signals via the antenna 2737. The wireless communication interface 2733 can 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 a plurality of BB processors 2734 and a plurality of RF circuits 2735. Although FIG. 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.

Furthermore, in addition to the cellular communication scheme, the wireless communication interface 2733 may 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, the wireless communication interface 2733 may include a BB processor 2734 and an RF circuit 2735 for each wireless communication scheme.

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.

Antennas 2737 each include a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and are used by wireless communication interface 2733 to transmit and receive wireless signals. As shown in FIG. 27, car navigation device 2720 may include multiple antennas 2737. Although FIG. 27 shows an example in which the car navigation device 2720 includes a plurality of antennas 2737, the car navigation device 2720 may also include a single antenna 2737.

Additionally, 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.

The battery 2738 provides power to the various blocks of the car navigation device 2720 shown in FIG. 27 via feeders, which are partially shown as dashed lines in the figure. Battery 2738 accumulates power provided from the vehicle.

The technology of the present disclosure may 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 of 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 .

The preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, but the present disclosure is of course not limited to the above examples. Various changes and modifications can be made by those skilled in the art 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.

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 devices, and each optional functional unit can be combined in an appropriate manner to achieve the required functions. .

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

In this specification, the steps described in the flowchart include not only processing performed in time series in the stated order but also processing performed in parallel or individually and not necessarily in time series. Furthermore, even in steps processed in time series, it goes without saying that the order can be appropriately changed.

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 above-described embodiments are only used to illustrate the present disclosure and do not constitute a limitation of the present disclosure. For those skilled in the art, various modifications and changes can be made to the above-described embodiments without departing from the spirit and scope of the present disclosure. Accordingly, the scope of the present disclosure is limited only by the appended claims and their equivalents.

Claims

An electronic device for the base station side, including a processing circuit, configured to:

Generate a handover request, the handover request including information about a smart surface that provides services to user equipment within the service range of the electronic device; and

The handover request is sent to a target base station device of the user equipment, so that after the user equipment is switched to the target base station device, the smart surface continues to provide services for the user equipment.
The electronic device according to claim 1, wherein the information of the smart surface includes an identification of the smart surface.
The electronic device of claim 2, wherein the information of the smart surface further includes information related to a reflection direction of the smart surface.
The electronic device of claim 3, wherein the processing circuit is further configured to:

Send measurement control information of the 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 based on the beam information from the user equipment.
The electronic device of claim 4, wherein the processing circuit is further configured to:

Predicting the reflected link beam direction between the user equipment and the smart surface based on the user equipment's location and motion information; and

The measurement control information is determined according to the predicted reflected link beam direction of the user equipment.
The electronic device of claim 1, wherein the processing circuit is further configured to:

determining that transmissions between the electronic device and the user equipment are interfered by transmissions between adjacent base station equipment and other user equipment served by the adjacent base station equipment; and

Configuring a smart surface such that the electronic device assists communication with the User equipment performs data transmission.
The electronic device of claim 6, wherein the processing circuit is further configured to:

The relationship between the electronic device and the user equipment is determined based on the direction of the downlink receiving beam of the user equipment, the location of the user equipment, the direction of the downlink receiving beam of the other user equipment, and the location of the other user equipment. The downlink transmission between the adjacent base station equipment and the other user equipment is interfered by the downlink transmission between the adjacent base station equipment and the other user equipment.
The electronic device of claim 7, wherein the processing circuit is further configured to:

The direction of the downlink reception beam of the other user equipment and the location of the other user equipment are received from the adjacent base station equipment.
The electronic device of claim 6, wherein the processing circuit is further configured to:

Send the identification of the smart surface or the direction of the downlink reception beam of the user equipment to the user equipment, so that the user equipment receives the downlink information through the smart surface.
The electronic device of claim 1, wherein the processing circuit is further configured to:

Configuring a smart surface such that the electronic device and the user are transmitted via a reflective link between the smart surface and the user device, and a direct link between the electronic device and the user device, respectively. data between devices.
The electronic device according to claim 6 or 10, wherein the processing circuit is further configured to:

Configuring the smart surface for transmission in response to load information received from adjacent base station equipment, wherein the load information reflects excessive interference and/or traffic overload to services of the adjacent base station equipment. .
The electronic device of claim 10, wherein the processing circuit is further configured to:

Determine whether or not based on the data transmission requirements between the electronic device and the user device Configure the smart surface.
The electronic device of claim 10, wherein the processing circuit is further configured to:

Send at least one of the following to the user equipment: the identification of the smart surface and the reflected link beam direction of the user equipment.
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 flow; 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.
The electronic device of claim 10, wherein the processing circuit is further configured to:

Generate and send request information to an adjacent base station device to request the adjacent base station device to transmit the communication between the electronic device and the user equipment through a direct link between the adjacent base station device and the user equipment. data; 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 passes through the direct link between the electronic device and the user equipment respectively. It is transmitted via a direct link between the adjacent base station equipment and the user equipment, and a reflective link between the electronic device and the smart surface.
The electronic device according to claim 15, wherein a direct link between the electronic device and the user equipment, a direct link between the adjacent base station equipment and the user equipment, and the electronic Reflective links between the device and the smart surface are respectively used to transmit different data streams; or

Direct links between the electronic device and the user equipment, direct links between the adjacent base station equipment and the user equipment, and reflective links between the electronic device and the smart surface Used to transmit the same multiple data streams.
The electronic device of claim 10, wherein the processing circuit is further configured to:

Generate and send request information to adjacent base station equipment to request the adjacent base station equipment to pass the direct link between the adjacent base station equipment and the user equipment, and the related a reflective link between adjacent base station equipment 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 passes through the direct link between the electronic device and the user equipment respectively. The direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device and the smart surface, and the direct link between the adjacent base station equipment and the smart surface Transmitted via a reflective link.
The electronic device according to claim 17, wherein a direct link between the electronic device and the user equipment, a direct link between the adjacent base station equipment and the user equipment, the electronic device The reflective links between the smart surface and the adjacent base station equipment 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 equipment and the user equipment, the reflective link between the electronic device and the smart surface, and reflective links between the adjacent base station equipment and the smart surface for transmitting the same multiple data streams.
The electronic device according to any one of claims 1-10 and 12-18, wherein the user equipment is a cooperating user within the service range of the electronic device, and the cooperating user is located in the service range of the electronic device. edge.
The electronic device of claim 19, wherein the processing circuit is further configured to:

A cooperating base station device that provides services to the cooperating user is determined according to the channel quality between the cooperating user and multiple adjacent base station devices.
The electronic device of claim 19, wherein the processing circuit is further configured to:

A smart surface that provides services to the collaborating user is determined based on the location of the collaborating user.
An electronic device for the base station side, including a processing circuit, configured to:

Determining that transmissions between the electronic device and user equipment served by the electronic device are interfered by transmissions between adjacent base station equipment and other user equipment served by the adjacent base station equipment; and

In response to the interference, a smart surface is configured such that the electronic device facilitates data transmission with the user device through the smart surface.
A wireless communication method performed by electronic equipment for a base station side, including:

Generate a handover request, the handover request including information about a smart surface that provides services to user equipment within the service range of the electronic device; and

The handover request is sent to a target base station device of the user equipment, so that after the user equipment is switched to the target base station device, the smart surface continues to provide services for the user equipment.
The wireless communication method according to claim 23, wherein the information of the smart surface includes an identification of the smart surface.
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.
The wireless communication method according to claim 25, wherein the wireless communication method further includes:

Send measurement control information of the 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 based on the beam information from the user equipment.
The wireless communication method according to claim 26, wherein the wireless communication method further includes:

Predicting the reflected link beam direction between the user equipment and the smart surface based on the user equipment's location and motion information; and

The measurement control information is determined according to the predicted reflected link beam direction of the user equipment.
The wireless communication method according to claim 23, wherein the wireless communication method further includes:

determining that transmissions between the electronic device and the user equipment are interfered by transmissions between adjacent base station equipment and other user equipment served by the adjacent base station equipment; and

Configuring a smart surface such that the electronic device assists communication with the User equipment performs data transmission.
The wireless communication method according to claim 28, wherein determining that transmission between the electronic device and the user equipment is interfered includes:

The relationship between the electronic device and the user equipment is determined based on the direction of the downlink receiving beam of the user equipment, the location of the user equipment, the direction of the downlink receiving beam of the other user equipment, and the location of the other user equipment. The downlink transmission between the adjacent base station equipment and the other user equipment is interfered by the downlink transmission between the adjacent base station equipment and the other user equipment.
The wireless communication method according to claim 29, wherein the wireless communication method further includes:

The direction of the downlink reception beam of the other user equipment and the location of the other user equipment are received from the adjacent base station equipment.
The wireless communication method according to claim 28, wherein the wireless communication method further includes:

Send the identification of the smart surface or the direction of the downlink reception beam of the user equipment to the user equipment, so that the user equipment receives the downlink information through the smart surface.
The wireless communication method according to claim 23, wherein the wireless communication method further includes:

Configuring a smart surface such that the electronic device and the user are transmitted via a reflective link between the smart surface and the user device, and a direct link between the electronic device and the user device, respectively. data between devices.
The wireless communication method according to claim 28 or 32, wherein the wireless communication method further includes:

Configuring the smart surface for transmission in response to load information received from adjacent base station equipment, wherein the load information reflects excessive interference and/or traffic overload to services of the adjacent base station equipment. .
The wireless communication method according to claim 32, wherein the wireless communication method further includes:

Determine whether or not based on the data transmission requirements between the electronic device and the user device Configure the smart surface.
The wireless communication method according to claim 32, wherein the wireless communication method further includes:

Send at least one of the following to the user equipment: the identification of the smart surface and the reflected link beam direction of the user equipment.
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 flow; 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.
The wireless communication method according to claim 32, wherein the wireless communication method further includes:

Generate and send request information to an adjacent base station device to request the adjacent base station device to transmit the communication between the electronic device and the user equipment through a direct link between the adjacent base station device and the user equipment. data; 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 passes through the direct link between the electronic device and the user equipment respectively. It is transmitted via a direct link between the adjacent base station equipment and the user equipment, and a reflective link between the electronic device and the smart surface.
The wireless communication method according to claim 37, wherein a direct link between the electronic device and the user equipment, a direct link between the adjacent base station equipment and the user equipment, and the Reflective links between the electronic device and the smart surface are respectively used to transmit different data streams; or

Direct links between the electronic device and the user equipment, direct links between the adjacent base station equipment and the user equipment, and reflective links between the electronic device and the smart surface Used to transmit the same multiple data streams.
The wireless communication method according to claim 32, wherein the wireless communication method further includes:

Generate and send request information to adjacent base station equipment to request the adjacent base station equipment to pass the direct link between the adjacent base station equipment and the user equipment, and the related a reflective link between adjacent base station equipment 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 passes through the direct link between the electronic device and the user equipment respectively. The direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device and the smart surface, and the direct link between the adjacent base station equipment and the smart surface Transmitted via a reflective link.
The wireless communication method according to claim 39, wherein a direct link between the electronic device and the user equipment, a direct link between the adjacent base station equipment and the user equipment, the electronic The reflective link between the device and the smart surface and the reflective 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 equipment, the direct link between the adjacent base station equipment and the user equipment, the reflective link between the electronic device and the smart surface, and reflective links between the adjacent base station equipment and the smart surface for transmitting the same multiple data streams.
The wireless communication method according to any one of claims 23-32 and 34-40, wherein the user equipment is a cooperating user within the service range of the electronic device, and the cooperating user is located in the service range of the electronic device. the edge of.
The wireless communication method according to claim 41, wherein the wireless communication method further includes:

A cooperating base station device that provides services to the cooperating user is determined according to the channel quality between the cooperating user and multiple adjacent base station devices.
The wireless communication method according to claim 41, wherein the wireless communication method further includes:

A smart surface that provides services to the collaborating user is determined based on the location of the collaborating user.
A wireless communication method performed by electronic equipment for a base station side, including:

Determining that transmissions between the electronic device and user equipment served by the electronic device are interfered by transmissions between adjacent base station equipment and other user equipment served by the adjacent base station equipment; and

In response to the interference, a smart surface is configured such that the electronic device facilitates data transmission with the user device through the smart surface.
A computer-readable storage medium comprising executable computer instructions that, when executed by a computer, cause the computer to perform the wireless communication method according to any one of claims 23-44.