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

Abstract

The present invention relates to an electronic device, a wireless communication method, and a computer-readable storage medium. The electronic device according to the present invention includes a processing circuit configured to determine an interference relationship graph among multiple base station devices according to environmental information and / or transmission beam information of each of the multiple base station devices, determine an uplink / downlink subframe configuration mode for each base station device according to the interference relationship graph, and determine the transmission period of each base station device according to the uplink / downlink subframe configuration mode of each base station device so that the transmission periods of two adjacent base station devices having different uplink / downlink subframe configuration modes do not overlap. Using the electronic device, wireless communication method, and computer-readable storage medium according to the present invention, it is possible to set the uplink / downlink subframe configuration modes and transmission times for multiple base station devices within a predetermined area, thereby reducing interference due to differences in modes among the multiple base station devices.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application filed with the China Patent Office on January 10, 2020, bearing application number 202010026566.7 and entitled "Electronic device, wireless communication method, and computer-readable storage medium," the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE DISCLOSURE Embodiments of the present disclosure relate generally to the field of wireless communication, and in particular to an electronic device, a wireless communication method, and a computer-readable storage medium. More specifically, the present disclosure relates to an electronic device capable of determining a mode and a transmission time of an uplink / downlink subframe configuration of a base station device, a wireless communication method performed by the electronic device, and a computer-readable storage medium. [Background technology]

[0003] The uplink / downlink subframe configuration mode refers to the mode of TDD uplink / downlink matching, and each mode specifies whether uplink data or downlink data is transmitted in different subframes, time slots, or OFDM symbols. For example, in a TDD-LTE system, mode 0 indicates that the 10 subframes are downlink, special subframe, uplink, uplink, uplink, downlink, special subframe, uplink, uplink, uplink, respectively. In an NR system, symbol-level uplink / downlink transmission is supported, so more modes can be supported.

[0004] Base station equipment may adopt uplink / downlink configurations of different modes, and when two base station equipment A and B that are close to each other adopt uplink / downlink configurations of different modes, there is a possibility that base station equipment A receives data from user equipment C (uplink transmission) and base station equipment B transmits data to user equipment D (downlink transmission) at the same time, in which case the signal from base station equipment B may reach base station equipment A and interfere with base station equipment A, or the signal from user equipment C may reach user equipment D and interfere with user equipment D. In other words, when two base station equipment that are close to each other adopt the same or adjacent frequencies and uplink / downlink configurations of different modes, interference may occur.

[0005] Therefore, it is necessary to propose a technical solution for reducing interference caused by mode differences between multiple base station equipment by setting uplink / downlink subframe configuration modes and transmission times for multiple base station equipment within a specified area. Summary of the Invention [Means for solving the problem]

[0006] This section provides a general overview of the disclosure, but is not an exhaustive disclosure of the entire scope or every feature.

[0007] An object of the present disclosure is to provide an electronic device, a wireless communication method, and a computer-readable storage medium that set uplink / downlink subframe configuration modes and transmission times for multiple base station equipment within a specified area, so that adjacent base station equipment adopts the same mode as much as possible, and adjacent base station equipment with different modes operates silently alternately, thereby reducing interference due to differences in modes between multiple base station equipment.

[0008] According to one aspect of the present invention, there is provided an electronic device including a processing circuit configured to determine an interference relationship graph between multiple base station equipment in accordance with environmental information and / or transmission beam information of each of multiple base station equipment, wherein a node in the interference relationship graph represents a base station equipment and an edge between two nodes represents that there is interference between two base station equipment represented by the two nodes, determine an uplink / downlink subframe configuration mode of each base station equipment in accordance with the interference relationship graph, and determine a transmission period of each base station equipment in accordance with the uplink / downlink subframe configuration mode of each base station equipment so that transmission periods of two adjacent base station equipment having different uplink / downlink subframe configuration modes do not overlap.

[0009] According to another aspect of the present disclosure, there is provided a wireless communication method executed by an electronic device, including: determining an interference relationship graph between a plurality of base station equipment according to environmental information and / or transmission beam information of each of a plurality of base station equipment, a node in the interference relationship graph representing a base station equipment, and an edge between two nodes representing that there is interference between two base station equipment represented by the two nodes; determining an uplink / downlink subframe configuration mode of each base station equipment according to the interference relationship graph; and determining a transmission period of each base station equipment according to the uplink / downlink subframe configuration mode of each base station equipment such that transmission periods of two adjacent base station equipment having different uplink / downlink subframe configuration modes do not overlap.

[0010] According to another aspect of the present disclosure, there is provided a computer readable storage medium comprising executable computer instructions which, when executed on a computer, cause the computer to perform a wireless communication method as described herein.

[0011] By using the electronic device, the wireless communication method, and the computer-readable storage medium according to the present disclosure, the electronic device can determine an interference relationship graph between multiple base station devices, determine the mode of the uplink / downlink subframe configuration of each base station device according to the interference relationship graph, and determine the transmission time of each base station device according to the mode of the uplink / downlink subframe configuration of each base station device, and adjacent base station devices with different modes can transmit data silently to each other. In this way, adjacent base station devices adopt the same mode as much as possible, and adjacent base station devices with different modes operate silently to each other, thereby reducing interference caused by different modes between multiple base station devices.

[0012] Further scope 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 present disclosure. [Brief description of the drawings]

[0013] The drawings described herein are only for the purpose of illustrating selected embodiments, not all possible implementations, and are not intended to limit the scope of the present disclosure.

[0014] [Figure 1] FIG. 1 is a block diagram illustrating an example configuration of an electronic device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a schematic diagram illustrating a distribution of base station equipment in a given area according to an embodiment of the present disclosure. [Diagram 3] FIG. 3 is a schematic diagram illustrating an interference relationship graph between multiple base station equipment according to an embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic diagram illustrating an interference relationship graph corresponding to each mode according to an embodiment of the present disclosure. [Diagram 5] FIG. 5 is a schematic diagram illustrating connected subgraphs corresponding to each mode according to an embodiment of the present disclosure. [Figure 6]FIG. 6 is a schematic diagram illustrating a procedure for determining connected subgraphs corresponding to each mode according to an embodiment of the present disclosure. [Figure 7] FIG. 7 is a schematic diagram illustrating changes in other connected subgraphs after a node in connected subgraph 2 corresponding to mode 3 is determined as mode 3 according to an embodiment of the present disclosure. [Figure 8] FIG. 8 exemplarily shows an interference relationship graph after determining the mode of the uplink / downlink subframe configuration of each base station equipment. [Figure 9] FIG. 9 is a flowchart illustrating a wireless communication method performed by an electronic device according to an embodiment of the present disclosure. [Figure 10] FIG. 10 illustrates a signaling flow chart for determining the mode and transmission time of the uplink / downlink subframe configuration of a base station device according to an embodiment of the present disclosure. [Figure 11] FIG. 11 is a block diagram illustrating an example of a server capable of implementing an electronic device according to the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] While the present disclosure is susceptible to various modifications and alternatives, specific embodiments thereof are shown by way of example in the accompanying drawings and will herein be described in detail. It is to be understood that the description of specific embodiments herein is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is intended to cover all modifications, equivalents, and substitutions falling within the spirit and scope of the disclosure. Corresponding reference characters indicate corresponding parts throughout the several drawings.

[0016] Examples of the present disclosure are more fully described with reference to the accompanying drawings, in which: The following description is merely exemplary in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0017] Exemplary examples are provided to make the disclosure more detailed and fully convey the scope of the disclosure to those skilled in the art. Various specific details, such as examples of specific components, devices, and methods, are described to provide a thorough understanding of the embodiments of the disclosure. It will be apparent to those skilled in the art that specific details are not necessarily required and that the exemplary embodiments can be embodied in many different forms and should not be construed as limiting the scope of the disclosure. In some exemplary embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

[0018] The explanation will be given in the following order. 1. System Description 2. Example of electronic device configuration 3. Method Example 4. Application Examples

[0019] <1. System Description> As described above, when two base station devices that are close to each other adopt the same or adjacent frequencies and adopt uplink / downlink configurations of different modes, interference may occur. This case may occur in an LTE system. That is, when two base station devices that are close to each other adopt the same or adjacent frequencies and adopt different LTE-TDD uplink / downlink configuration modes, these two base station devices may interfere with each other. Alternatively, this case may occur in an NR system. That is, when two base station devices that are close to each other adopt the same or adjacent frequencies and adopt different NR uplink / downlink configuration modes, these two base station devices may interfere with each other. Furthermore, this case may occur in a heterogeneous network including an LTE system and an NR system. For example, in the United States, the band from 3.4 GHz to 3.8 GHz was originally a military radar band, and the Federal Communications Commission (FCC) proposed commercialization of this band, and this band is called Citizen Broadband Radio Service (CBRS). Typically, CBRS allows three levels of user system access, with the priority decreasing in the order of Incumbent Access (IA), Priority Access Licensed (PAL), and General Authorized Access (GAA). In the CBRS band, coexistence of the LTE-TDD system and the NR system is possible for the PAL network. In such a heterogeneous network, one of two base station equipments close to each other adopts the LTE-TDD mode and the other base station equipment adopts the NR mode. Due to the difference in the uplink / downlink configuration of the two modes, the uplink / downlink time slots or symbols are not aligned, and in this case, interference may occur between the two base station equipments.

[0020] Therefore, the wireless communication system of the present disclosure may be an LTE-TDD communication system, an NR communication system, or a heterogeneous communication system including them.

[0021] Also, according to an embodiment of the present disclosure, in a heterogeneous communication system including an LTE-TDD communication system and an NR communication system, the modes of the uplink / downlink subframe configuration are the same, and the uplink / downlink time slots or symbols of the two modes are completely aligned. For example, in an LTE-TDD communication system, two modes that are completely the same (the numbers of the two modes are the same) are considered to be the same mode, and in an NR communication system, two modes that are completely the same (the numbers of the two modes are the same) are also considered to be the same mode. Also, although the number of the mode of the uplink / downlink subframe configuration in the NR communication system is different from the number of the mode of the uplink / downlink subframe configuration in the LTE-TDD communication system, the uplink / downlink time slots or symbols of the two modes may be completely aligned, and in the present disclosure, such two modes are considered to be the same mode.

[0022] According to an embodiment of the present disclosure, in a given area, one electronic device can be installed for setting the mode and transmission time of uplink / downlink subframes for base station equipment in the given area, and the electronic device can be located in a cloud or integrated into the base station equipment in the given area. According to an embodiment of the present disclosure, multiple base station equipment are not yet used in the given area. For example, an operator plans to install a certain number of base station equipment in the given area, and in this case, the electronic device sets the mode and transmission time of uplink / downlink subframes for these base station equipment, so that adjacent base station equipment adopts the same mode as much as possible, and adjacent base station equipment with different modes operates alternately silently, thereby reducing interference due to mode differences between base station equipment. Alternatively, in the given area, there may already be some base station equipment with a determined mode, and in this case, the electronic device sets the transmission time for these base station equipment, so that adjacent base station equipment with different modes operates alternately silently, thereby reducing interference due to mode differences between base station equipment.

[0023] According to the embodiment of the present disclosure, the location distribution of each base station in the wireless communication system may be regular like a cellular communication system, or may be irregular, that is, in the present disclosure, the location distribution of the base stations is not limited, and the base station equipment may be located at any position in a predetermined area.

[0024] The electronic device according to the embodiment of the present disclosure can be realized as any type of server, such as a tower server, a rack server, a blade server, etc. The electronic device can be a control module mounted on the server (e.g., an integrated circuit module including a single chip, a card or a blade inserted into a slot of a blade server).

[0025] The base station equipment according to the embodiment of the present disclosure may be realized as a macro eNB and a small eNB, and may further be realized as any type of gNB (base station in a 5G system). The small eNB may be an eNB covering a cell smaller than a macro cell, such as, for example, a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, the base station may be realized as any other type of base station, such as, for example, a NodeB and a base station transceiver station (BTS). The base station may include a subject (also called a base station equipment) configured to control wireless communication and one or more remote radio heads (RRHs) provided at a different location from the subject.

[0026] <2. Example of electronic device configuration> 1 is a block diagram showing a configuration example of an electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 here, as a server in a wireless communication system, determines an uplink / downlink subframe configuration mode and / or determines a transmission time for a base station device within the service range of the electronic device 100, thereby reducing interference caused by a difference in the uplink / downlink subframe configuration mode between the base station devices. For example, the electronic device 100 may be located in a cloud or integrated into the base station device.

[0027] As shown in FIG. 1, the electronic device 100 may include an interference relationship graph determining unit 110, a mode determining unit 120, and a transmission time determining unit .

[0028] Here, each unit of the electronic device 100 may be included in a processing circuit. The electronic device 100 may include one processing circuit or multiple processing circuits. Furthermore, the processing circuit may include various individual functional units to perform various different functions and / or operations. These functional units may be physical or logical entities, and units with different names may be realized by the same physical entity.

[0029] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can determine an interference relationship graph between multiple base station devices according to the environment information and / or transmission beam information of the base station devices. Here, a node in the interference relationship graph represents a base station device, and an edge between two nodes represents that there is interference between the two base station devices represented by the two nodes.

[0030] According to an embodiment of the present disclosure, the mode determination unit 120 can determine the mode of the uplink / downlink subframe configuration of each base station device according to the interference relationship graph.

[0031] According to an embodiment of the present disclosure, the transmission time determination unit 130 can determine the transmission time of each base station device according to the uplink / downlink subframe configuration mode of each base station device, so that two base station devices that are adjacent and have different uplink / downlink subframe configuration modes transmit data at orthogonal times.

[0032] Therefore, according to the embodiment of the present disclosure, the electronic device 100 can determine an interference relationship graph between multiple base station devices, determine the mode of the uplink / downlink subframe configuration of each base station device according to the interference relationship graph, and determine the transmission time of each base station device according to the mode of the uplink / downlink subframe configuration of each base station device, and adjacent base station devices with different modes transmit data silently alternately. In this way, adjacent base station devices adopt the same mode as much as possible, and adjacent base station devices with different modes operate silently alternately, thereby reducing interference caused by different modes between multiple base station devices.

[0033] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can determine an interference relationship graph between a plurality of base station devices according to environmental information of the base station devices, where the environmental information can include information indicating whether the base station devices are in an indoor environment or an outdoor environment.

[0034] According to an embodiment of the present disclosure, when one of two base station devices is in an indoor environment and the other is in an outdoor environment, the interference relationship graph determination unit 110 can determine that there is no interference between the two base station devices. When the base station device is in an indoor environment, it is sufficiently isolated from the outdoor base station device, in which case the interference between the two base station devices can be ignored, so that the operation of the interference relationship graph determination unit 110 can be simplified.

[0035] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can determine an interference relationship graph between a plurality of base station devices according to the transmission beam information of the base station device, where the transmission beam information can include direction information of the transmission beam of the base station device.

[0036] According to the embodiment of the present disclosure, when the transmission beam direction of one of two base station devices is away from the other base station device and the transmission beam direction of the other base station device is also away from the one base station device, it can be determined that there is no interference between the two base station devices. In other words, when the direction of the transmission beam of base station device A is away from base station device B and the direction of the transmission beam of base station device B is away from base station device A, the interference relationship graph determination unit 110 can determine that there is no interference between base station device A and base station device B. Here, the fact that the direction of the transmission beam of base station device A is away from base station device B means that the angle between the direction of the transmission beam of base station device A and the direction in which base station device A points to base station device B is greater than a predetermined threshold, for example, 90 degrees. In this case, the intensity of the transmission beam reaching base station device B from base station device A is weak, and the interference of base station device A to base station device B can be ignored. Conversely, the direction of the transmission beam of base station device B being away from base station device A means that the angle between the direction of the transmission beam of base station device B and the direction in which base station device B points to base station device A is greater than a predetermined threshold, for example, 90 degrees. According to the embodiment of the present disclosure, it is possible to simplify the operation of interference relationship graph determination unit 110 according to the transmission beam direction of the base station device.

[0037] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can further determine whether there is interference between base stations according to the location information, transmission power information, and frequency domain resources used of the base station equipment.

[0038] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can determine whether there is interference between base stations according to frequency domain resources used by the base station devices. Here, when the frequency domain resources used by two base station devices are different and not adjacent, the interference relationship graph determination unit 110 can determine that there is no interference between the two base station devices.

[0039] According to an embodiment of the present disclosure, when the frequency domain resources used by two base station equipment are the same or adjacent, the interference relationship graph determination unit 110 can determine a signal-to-interference and noise ratio according to the location information and transmission power information of the two base station equipment, and when the signal-to-interference and noise ratio is smaller than a predetermined threshold, the interference relationship graph determination unit 110 can determine that there is interference between the two base station equipment.

[0040] According to an embodiment of the present disclosure, it is possible to determine whether there is interference between any two base station devices (base station device pair) among a plurality of base station devices. For example, after determining a base station device pair without interference according to the environment information, transmission beam information and / or frequency domain resources used of the base station devices, the interference relationship graph determination unit 110 can determine whether there is interference between the remaining base station device pairs according to the signal-to-interference and noise ratios of the remaining base station device pairs. In addition, when determining whether there is interference between base station device a and base station device b, the interference relationship graph determination unit 110 can respectively determine whether base station device a interferes with base station device b and whether base station device b interferes with base station device a. In addition, when at least one of the conditions of the condition that base station device a interferes with base station device b and the condition that base station device b interferes with base station device a is satisfied, the interference relationship graph determination unit 110 determines that there is interference between base station device a and base station device b.

[0041] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can determine interference according to a signal-to-interference and noise ratio. For example, when the signal-to-interference and noise ratio of the base station device a is smaller than a predetermined threshold, it determines that the base station device b interferes with the base station device a, and when the signal-to-interference and noise ratio of the base station device b is smaller than a predetermined threshold, it determines that the base station device a interferes with the base station device b.

[0042] Hereinafter, the operation of the interference relationship graph determination unit 110 will be described in detail by taking the calculation of the signal-to-interference and noise ratio of the base station device a as an example.

[0043] According to an embodiment of the present disclosure, the interference relationship graph determination unit 110 can determine the interference from base station device b received by base station device a according to the transmission power of base station device b and the distance between base station device a and base station device b. For example, the interference relationship graph determination unit 110 can calculate the interference from base station device b received by base station device a according to the following formula.

[0044]

number

[0045] Among them, I a b represents the interference received by base station equipment a from base station equipment b, and P TX represents the transmission power of base station equipment b, and G TX represents the antenna gain of base station equipment b, and d a b represents the distance between base station device a and base station device b, and λ and α are constants. Here, the interference relationship graph determination unit 110 calculates the distance from base station device b to P TX and G TX The value of d is obtained according to the positions of base station equipment a and base station equipment b. a b The value of can be determined.

[0046] Furthermore, interference relationship graph determination unit 110 can determine the signal-to-interference and noise ratio of base station device a according to the interference received by base station device a from base station device b and the received power of base station device a. Here, base station device a can determine the received power of base station device a by measuring the signal from base station device b, and electronic device 100 can obtain the received power of base station device a by transmitting the received power of base station device a to electronic device 100. For example, interference relationship graph determination unit 110 can calculate the signal-to-interference and noise ratio of base station device a according to the following equation.

[0047]

number

[0048] Among them, SINR a b represents the signal-to-interference and noise ratio of base station equipment a, and P RX represents the received power of base station device a, and N0 represents white noise.

[0049] Furthermore, the interference relationship graph determination unit 110 determines the signal-to-interference-and-noise ratio of the base station device a and the signal-to-interference-and-noise ratio threshold value SINR th Depending on this, it is possible to determine whether base station equipment a is receiving interference from base station equipment b.

[0050] For example, SINR a b <SINR th In this case, it is determined that base station equipment a is receiving interference from base station equipment b, ie, there is an edge between the node representing base station equipment a and the node representing base station equipment b.

[0051] As described above, the interference relationship graph determination unit 110 can determine whether there is an edge between the base station device a and the base station device b according to the signal-to-interference and noise ratio of the base station device a. Similarly, the interference relationship graph determination unit 110 can also determine whether there is an edge between the base station device a and the base station device b according to the signal-to-interference and noise ratio of the base station device b, which will not be described again in the present disclosure.

[0052] As shown in FIG. 1, according to an embodiment of the present disclosure, the electronic device 100 may further include a communication unit 140 for transmitting and receiving information to and from devices other than the electronic device 100.

[0053] According to an embodiment of the present disclosure, the electronic device 100 can receive, via the communication unit 140, from each base station device, at least one of the following: environmental information of the base station device, transmission beam information of the base station device, location information of the base station device, transmission power information of the base station device, and frequency domain resource information used by the base station device.

[0054] FIG. 2 is a schematic diagram showing the distribution of base station equipment arranged in a given area according to an embodiment of the present disclosure. As shown in FIG. 2, ten base station equipments numbered 1-10 are shown, and it is assumed that base station equipment 3 is indoors, other base station equipments are outdoors, and the direction of the transmission beam of base station equipment 10 is directly to the left of FIG. 2, and the direction of the transmission beam of base station equipment 8 is directly to the right of FIG. 2. FIG. 2 also shows optional mode (candidate mode) information of base station equipment 1-10. That is, each base station equipment can select only one mode from its optional modes and operate. For example, base station equipment 1 can select one mode from modes 1, 2, and 3 to operate.

[0055] FIG. 3 is a schematic diagram showing an interference relationship graph between the plurality of base station devices in FIG. 2. As shown in FIG. 3, the base station device 3 is indoors and the other base station devices are outdoors, so there is no edge between the base station device 3 and the other base station devices. Furthermore, the direction of the transmission beam of the base station device 8 is away from the base station device 10, and the direction of the transmission beam of the base station device 10 is away from the base station device 8, so there is no edge between the base station device 8 and the base station device 10. For the other base station device pairs, the interference relationship graph determination unit 110 can determine the interference relationship graph shown in FIG. 3 by determining whether there is interference between each base station device pair according to the frequency domain resource, position, and transmission power used by the base station device as described above.

[0056] According to an embodiment of the present disclosure, the electronic device 100 can store and represent the interference relationship graph using a matrix. Assuming that the number of base stations is R, the matrix T is used to represent the interference relationship graph, where the size of T is R×R, and the element T ij represents the probability that there is interference between base station i and base station j, where i, j ∈ [1, R] and i ≠ j, and the diagonal element T iirepresents the mode of base station i, and its initial value is -1. Since the edges in the interference relationship graph are undirected, only the values ​​of the upper triangular matrix of matrix T need to be recorded. For example, if the candidate modes of base station i are 1 and 2, and the candidate modes of base station j are 2 and 3, then only when both base station i and base station j select mode 2, there is no interference, and therefore the probability that there is interference between base station i and base station j is 3 / 4.

[0057] According to an embodiment of the present disclosure, the mode determination unit 120 can determine, for each mode in one or more candidate uplink / downlink subframe configuration modes of each base station equipment, an interference relationship graph corresponding to the mode, and the candidate uplink / downlink subframe configuration modes of the base station equipment represented by each node of the interference relationship graph corresponding to the mode include the mode.

[0058] According to an embodiment of the present disclosure, the electronic device 100 receives candidate modes of the base station devices from the respective base station devices via the communication unit 140, and then determines a union of the candidate modes of all the base station devices, thereby determining an interference relationship graph corresponding to each mode in the union. For example, as shown in FIG. 2, the union of the candidate modes of the base station devices 1-10 is {1, 2, 3, 4, 5, 6, 7, 9}, so that the mode determination unit 120 can determine an interference relationship graph corresponding to each of the modes 1, 2, 3, 4, 5, 6, 7, and 9. According to an embodiment of the present disclosure, the interference relationship graph corresponding to a certain mode is a part of the interference relationship graph determined by the interference relationship graph determination unit 110, that is, the interference relationship graph corresponding to the certain mode includes all nodes and edges between nodes whose candidate modes include the certain mode.

[0059] 4 is a schematic diagram showing an interference relationship graph corresponding to each mode according to an embodiment of the present disclosure. As shown in FIG. 4, for mode 1, the candidate mode of only the base station device 1 among the base station devices 1-10 includes mode 1, so only the base station device 1 is included in the interference relationship graph corresponding to mode 1; for mode 2, the candidate modes of the base station devices 1, 7, and 8 include mode 2, so the interference relationship graph corresponding to mode 2 includes base station devices 1, 7, and 8; and since there is an edge between the base station devices 7 and 8 in the interference relationship graph shown in FIG. 3, there is also an edge between the base station devices 7 and 8 in the interference relationship graph corresponding to mode 2; similarly, the interference relationship graphs corresponding to modes 3, 4, 5, 6, 7, and 9 can be determined.

[0060] According to an embodiment of the present disclosure, for an interference relationship graph corresponding to each mode, the mode determination unit 120 can determine one or more connected subgraphs in the interference relationship graph, where each node in the connected subgraph is connected to at least one other node in the connected subgraph, where the candidate modes of each node in the determined connected subgraph include the mode, so such connected subgraph is also referred to as a connected subgraph corresponding to the mode.

[0061] Fig. 5 is a schematic diagram showing connected subgraphs corresponding to each mode determined according to the interference relationship graphs corresponding to each mode shown in Fig. 4. As shown in Fig. 5, any of modes 1, 4, 6, 7, and 9 does not correspond to a connected subgraph, mode 2 corresponds to one connected subgraph, which is numbered as connected subgraph 1 for convenience of explanation, mode 3 corresponds to one connected subgraph, which is numbered as connected subgraph 2 for convenience of explanation, and mode 5 corresponds to two connected subgraphs, which are numbered as connected subgraph 3 and connected subgraph 4 for convenience of explanation.

[0062] According to an embodiment of the present disclosure, the procedure of determining the connected subgraphs corresponding to each mode according to the interference relationship graphs corresponding to each mode employs a layer-order traversal. Simply put, starting from a node, determine the nodes adjacent to the node (called first-layer neighbors), and among the remaining nodes, determine the nodes adjacent to the first-layer neighbors (called second-layer neighbors), and so on until there are no more neighbors.

[0063] Fig. 6 is a schematic diagram showing the procedure of determining the connected subgraphs corresponding to each mode by adopting layer-order traversal. As shown in Fig. 6, for a source node s, we first determine its three first-layer neighboring nodes, and then determine the two second-layer neighboring nodes adjacent to the first-layer neighboring nodes.

[0064] As described above, the mode determination unit 120 can determine an interference relationship graph corresponding to each mode in accordance with the interference relationship graph determined by the interference relationship graph determination unit 110, and then determine a connected subgraph corresponding to each mode in accordance with the interference relationship graph corresponding to each mode.

[0065] According to an embodiment of the present disclosure, in order to simplify the calculation, the mode determination unit 120 can also determine one or more connected subgraphs according to the interference relationship graph determined by the interference relationship graph determination unit 110, and each node in the connected subgraph is connected to at least one other node in the connected subgraph. At this time, the candidate modes of each node in the determined connected subgraph do not necessarily include the same mode. Then, for each connected subgraph of the interference relationship graph determined by the interference relationship graph determination unit 110, the mode determination unit 120 can adopt a layer order traversal for each mode to determine a connected subgraph corresponding to each mode. For example, for the interference relationship graph shown in FIG. 3, the mode determination unit 120 can determine two connected subgraphs, in which one connected subgraph includes nodes 4 and 5, and the other connected subgraph includes nodes 2, 6, 7, 8, 9, and 10. For each connected subgraph in the two connected subgraphs, the mode determination unit 120 can determine, for each of the modes 1, 2, 3, 4, 5, 6, 7, and 9, a connected subgraph corresponding to each mode.

[0066] According to an embodiment of the present disclosure, for any one connected subgraph of the interference relationship graph determined by the interference relationship graph determination unit 110 and any one mode, the mode determination unit 120 can perform the following operations (note that a set of base station devices including a candidate mode in the connected subgraph is S e And A S represents the set of neighbor base station equipment of a node).

[0067] (1) Set S e Arbitrarily select s nodes from A S and S. e and are crossed to obtain the intersection C S Get the.

[0068] (2) s node and C S The nodes in the set are then divided into connected subgraphs G S where G SThe nodes in adopt a first-in-first-out format, and then, S e Remove the nodes in GS from .

[0069] (3) G S Take the head node h from A h and S. e and are crossed to obtain the intersection C h Get C h G S Add to, then S e From C h Remove the node in .

[0070] (4) G S If the queue at is not empty, perform step (3) and S If the queue in is empty, G S as the connected subgraph corresponding to the mode, and then execute step (1).

[0071] As described above, for any one connected subgraph of the interference relationship graph and any one mode determined by the interference relationship graph determination unit 110, the mode determination unit 120 starts from any one node and searches for a node (first layer adjacent node) adjacent to the node and having the same mode, and searches for a node (second layer adjacent node) adjacent to the first layer adjacent node and having the same mode from the remaining nodes, and repeats this process to determine the connected subgraph corresponding to the mode. In this way, the mode determination unit 120 can determine each connected subgraph corresponding to each mode.

[0072] According to an embodiment of the present disclosure, the mode determination unit 120 can determine the uplink / downlink subframe configuration mode of each base station device according to each connected subgraph corresponding to each mode and one or more isolated nodes after determining each connected subgraph corresponding to each mode. Here, an isolated node refers to a node that is not in any one connected subgraph. That is, the node is not connected to other nodes. FIG. 5 shows four connected subgraphs, and if nodes 1 and 3 are not included in any of the four connected subgraphs, nodes 1 and 3 belong to an isolated node.

[0073] According to an embodiment of the present disclosure, the mode determination unit 120 can set a mode for each base station equipment according to the following steps: a. setting each connected subgraph corresponding to each mode as a plurality of initial connected subgraphs; b. selecting one or more connected subgraphs from the plurality of connected subgraphs, and determining the mode of the uplink / downlink subframe configuration of the base station equipment represented by a node in the selected connected subgraph as the mode corresponding to the selected connected subgraph; c. removing nodes in the selected connected subgraph from connected subgraphs other than the selected connected subgraph among the plurality of connected subgraphs, thereby generating a plurality of updated connected subgraphs; and d. repeatedly executing steps b and c until there are no more connected subgraphs.

[0074] According to the embodiment of the present disclosure, in step a, each connected subgraph corresponding to each mode refers to all connected subgraphs corresponding to the modes determined as above by the mode determination unit 120. For example, taking FIG. 5 as an example, the initial multiple connected subgraphs refer to connected subgraph 1 corresponding to mode 2, connected subgraph 2 corresponding to mode 3, connected subgraph 3 corresponding to mode 5, and connected subgraph 4 corresponding to mode 5.

[0075] According to an embodiment of the present disclosure, in step b, the mode determination unit 120 may select one or more connected subgraphs from the multiple connected subgraphs according to the number of nodes in the connected subgraph or the throughput of the connected subgraph. For example, the mode determination unit 120 may select one connected subgraph with the maximum number of nodes from the multiple connected subgraphs. Also, for example, the mode determination unit 120 may select one connected subgraph with the maximum throughput from the multiple connected subgraphs.

[0076] According to an embodiment of the present disclosure, the throughput of a connected subgraph represents the product of the number of nodes in the connected subgraph and the throughput of the mode corresponding to the connected subgraph. That is, the throughput of a connected subgraph represents the sum of the throughputs of each node in the connected subgraph. The throughputs correspond one-to-one to the modes, that is, the throughput of a node is determined according to the mode used by the node. For example, assuming that the throughput corresponding to mode M is T and the connected subgraph corresponding to mode M includes four nodes, the throughput of each node is T, and the throughput of the connected subgraph is 4T.

[0077] According to an embodiment of the present disclosure, the mode decision unit 120 may select two connected subgraphs from the plurality of connected subgraphs, the two connected subgraphs having the largest sum of the number of nodes. In this implementation, the mode decision unit 120 may perform the following operations: from the plurality of connected subgraphs, select two connected subgraphs A, B, C, B, C, B, C, and C, having the largest sum of the number of nodes. m and B. m Select connected subgraph A m For the remaining connected subgraphs, select the connected subgraph A m In this case, some connected subgraphs may be split, and from the new connected subgraphs, the connected subgraph C with the maximum number of m Similarly, select connected subgraph B m For the remaining connected subgraphs, select the connected subgraph B mIn this case, some connected subgraphs may be split, and the new connected subgraphs are divided into the connected subgraphs D m Select and A m +C m >B m +D m Then, the connected subgraph A m and a connected subgraph C m otherwise, select connected subgraph B m and connected subgraph D m Select .

[0078] According to an embodiment of the present disclosure, in step b, the mode determination unit 120 selects one or more connected subgraphs from the multiple connected subgraphs, and determines the mode of the base station device represented by the node in the selected connected subgraph as the mode corresponding to the selected connected subgraph. Here, taking as an example the mode determination unit 120 selecting one connected subgraph with the maximum number of nodes, in the four connected subgraphs shown in FIG. 5, the connected subgraph with the maximum number of nodes is connected subgraph 2 corresponding to mode 3, so the mode determination unit 120 can determine the mode of each node in connected subgraph 2 as mode 3. In other words, the modes of base station devices 2, 6, 7, 8, 9, and 10 are determined to be mode 3.

[0079] According to an embodiment of the present disclosure, in step c, the mode determination unit 120 can remove nodes in the selected connected subgraph from connected subgraphs other than the selected connected subgraph among the multiple connected subgraphs to generate multiple updated connected subgraphs, i.e., the mode determination unit 120 removes nodes for which the mode has been determined in the other connected subgraphs.

[0080] 7 is a schematic diagram illustrating changes in other connected subgraphs after a node in connected subgraph 2 corresponding to mode 3 is determined as mode 3 according to an embodiment of the present disclosure. As shown in FIG. 7, after the modes of base station devices 2, 6, 7, 8, 9, and 10 are determined as mode 3, these nodes are removed from the other connected subgraphs, so there are no nodes in connected subgraph 1, there are no nodes in connected subgraph 3, and connected subgraph 4 remains as it is. Therefore, there is only connected subgraph 4 in the updated multiple connected subgraphs.

[0081] According to an embodiment of the present disclosure, in step d, steps b and c are repeatedly performed until there are no more connected subgraphs. That is, the mode determination unit 120 selects one or more connected subgraphs from the updated multiple connected subgraphs, and determines the mode of the nodes in the selected connected subgraph as the mode corresponding to the connected subgraph. Here, since only connected subgraph 4 remains, the mode determination unit 120 selects connected subgraph 4, and determines the mode of base station device 4 and base station device 5 in connected subgraph 4 as mode 5.

[0082] As described above, after steps a, b, c, and d, mode determination unit 120 determines the mode of base station devices 2, 6, 7, 8, 9, and 10 as mode 3, and determines the mode of base station devices 4 and 5 as mode 5. Although steps b, c, and d have been described above using an example of selecting a connected subgraph with the maximum number of nodes, the procedure for selecting a connected subgraph employing other principles is similar.

[0083] According to the embodiment of the present disclosure, the mode can be determined in units of connected subgraphs for each mode, and since a node in a connected subgraph has interference with at least one other node in the connected subgraph, by determining the mode in units of connected subgraphs, the nodes in one connected subgraph adopt the same mode as much as possible, and interference between nodes in the connected subgraphs is avoided. Furthermore, regarding the determination order, the mode determination unit 120 can determine the order of the connected subgraphs according to the number of nodes, and as many base station devices as possible adopt the same mode, and the mode determination unit 120 can also determine the order of the connected subgraphs according to the throughput, and satisfy the mode of the connected subgraph with the largest throughput as possible. In short, according to the embodiment of the present disclosure, interference due to differences in modes between nodes can be avoided as much as possible.

[0084] According to the embodiment of the present disclosure, after the above steps, the nodes that have not yet been configured with a mode become isolated nodes. For example, in the above embodiment, the isolated nodes include base station equipment 1 and 3. For these isolated nodes, the mode determination unit 120 can randomly select one mode from the modes of the candidate uplink / downlink subframe configurations of the base station equipment represented by the isolated nodes. For example, for base station equipment 1, its candidate modes include 1, 2, and 3, and the mode determination unit 120 can randomly select mode 2 as the mode of the base station equipment 1. The mode determination unit 120 can also select a mode with the maximum throughput from the modes of the candidate uplink / downlink subframe configurations of the base station equipment represented by the isolated nodes. For example, for base station equipment 1, its candidate modes include 1, 2, and 3, and assuming that the throughput of mode 1 is the maximum, the mode determination unit 120 can select mode 1 as the mode of the base station equipment 1. The mode determination unit 120 may further select a mode of the candidate uplink / downlink subframe configurations of the base station device represented by the isolated node that is the same as that of the base station device represented by the other isolated node from the modes of the candidate uplink / downlink subframe configurations of the base station device represented by the isolated node. For example, assuming that the candidate modes of the isolated node P include 1 and 2, and the candidate modes of the isolated node Q include 2 and 3, the mode determination unit 120 may determine the mode of the isolated node P and the isolated node Q to 2, thereby reducing the number of modes of all the base station devices. Although the embodiment in which the mode determination unit 120 determines the mode for the isolated node has been described above in a non-restrictive manner, the mode determination unit 120 may further determine the mode for the isolated node according to other parameters of the isolated node.

[0085] According to an embodiment of the present disclosure, for all isolated nodes whose modes have not yet been determined, the mode determination unit 120 may also determine an order of determining the modes for the isolated nodes. For example, the mode determination unit 120 may determine a priority in determining the mode of the uplink / downlink subframe configuration for the base station device represented by the isolated node according to the degree of the isolated node, where the degree represents the number of nodes adjacent to the isolated node and whose uplink / downlink subframe configuration mode has not yet been determined in the interference relationship graph determined by the interference relationship graph determination unit 110. The higher the degree, the higher the priority, and the mode determination unit 120 may determine the mode of each isolated node in descending order of priority.

[0086] As described above, the mode determination unit 120 according to an embodiment of the present disclosure has been described in detail, and the mode determination unit 120 can determine the uplink / downlink subframe configuration mode for each base station device within a given area.

[0087] According to an embodiment of the present disclosure, after the mode determination unit 120 determines the mode of each base station device, the electronic device 100 can update the value of the matrix. For example, after determining the interference between two base station devices according to the determined mode of each base station device, T ij If the mode of the base station equipment i and the mode of the base station equipment j are the same, the value of T ij is 0, and if the mode of base station equipment i is different from the mode of base station equipment j, T ij In addition, depending on the mode of the base station device i, T ii Update the value of to make it equal to the mode number of base station device i.

[0088] As described above, according to the embodiment of the present disclosure, the interference relationship graph can be stored and represented by a matrix. Optionally, the electronic device 100 can transmit the matrix to each base station device as necessary.

[0089] The transmission time determining unit 130 according to an embodiment of the present disclosure will now be described in detail.

[0090] According to an embodiment of the present disclosure, the transmission time determination unit 130 can determine a transmission ratio of each base station device according to the uplink / downlink subframe configuration mode of each base station device, and the transmission ratio represents the proportion of the transmission time of the base station device in a reference time.

[0091] According to an embodiment of the present disclosure, for a base station device whose adjacent base station device has the same uplink / downlink subframe configuration mode, the transmission ratio of the base station device is determined to be 1. That is, when an adjacent base station device of a certain base station device has the same mode as the base station device, there is no interference between the base station device and the adjacent base station device, and the base station device can transmit information at any time.

[0092] According to an embodiment of the present disclosure, for a base station device whose neighboring base station devices have different uplink / downlink subframe configuration modes, the transmission ratio of the base station device is determined to be less than 1. In other words, if there is a base station device whose neighboring base station device has a different mode from that of a certain base station device, the transmission ratio of the base station device is less than 1.

[0093] According to an embodiment of the present disclosure, the electronic device 100 can set a reference time as necessary. The reference time can be one frame or multiple frames, but the present disclosure is not limited thereto. The transmission ratio ranges from (0.1). For example, when the transmission ratio is 0.5, it indicates that data can be transmitted in half the reference time.

[0094] According to an embodiment of the present disclosure, for each base station device in which adjacent base station devices have different modes, the transmission time determination unit 130 can determine the transmission ratio of each base station device by linear programming.

[0095] FIG. 8 exemplarily shows an interference relationship graph after the mode of the uplink / downlink subframe configuration of each base station device is determined. In FIG. 8, 1-8 represents the number of the base station device or node, and the shape of the node represents the mode. That is, the modes of nodes 1, 2 and 5 are the same, the modes of nodes 3 and 4 are the same, the modes of nodes 6 and 8 are the same, and node 7 is different from the mode of other nodes. FIG. 8 is unrelated to the above example, that is, the mode of each node in FIG. 8 is not the mode determined based on the example shown in 3. As shown in FIG. 8, each node has adjacent nodes with different modes, so the transmission ratio of nodes 1-8 is less than 1.

[0096] According to an embodiment of the present disclosure, the transmission time determination unit 130 can determine an objective function according to the transmission ratio of each base station device having different modes of adjacent base station devices and the throughput of the mode of each base station device. Specifically, the objective function can be expressed as the sum of the products of the transmission ratio and the throughput of each node whose transmission ratio is less than 1, as shown in the following formula:

[0097]

number

[0098] Here, N represents the number of nodes for which the transmission ratio needs to be determined, i.e., the number of nodes whose transmission ratio is less than 1, and p j represents the transmission ratio of the jth node, i.e., the parameter to be calculated, and S j represents the throughput of the jth node, which is determined by the mode of the node, j∈[1, N].

[0099] According to an embodiment of the present disclosure, the transmission time determination unit 130 can determine that the constraint condition includes that the sum of the transmission ratios of two adjacent base station devices having different modes is not greater than 1, as shown in the following equation:

[0100]

number

[0101] Among them, μ j represents the number of adjacent base station equipments having different modes of the jth node, and p j1 represents the transmission ratio of the first adjacent base station device of the jth node that has a different mode, and p j2 represents the transmission ratio of the second adjacent base station equipment of the jth node that has a different mode, ..., p jμj is the jth node's j The th transmission ratio represents the transmission ratio of adjacent base station equipment having different modes.

[0102] In the example shown in FIG. 8, this constraint can be expressed by the following equation:

[0103]

number

[0104] According to the embodiment of the present disclosure, the transmission time determination unit 130 can further determine other constraint conditions according to the principle of fairness, so as to maximize the transmission ratio of the node. For example, the transmission ratio of the node needs to be equal to or greater than the inverse of (the number of adjacent nodes having different modes of the node+1). That is, when a node has only one adjacent node having different modes, the transmission ratio of the node needs to be equal to or greater than 0.5. This constraint condition is as shown below.

[0105]

number

[0106] In the example shown in FIG. 8, this constraint can be expressed by the following equation:

[0107]

number

[0108] According to an embodiment of the present disclosure, the transmission time determination unit 130 determines P j ,j∈[1,N], the transmission ratio of each node can be determined.

[0109] According to an embodiment of the present disclosure, in the example shown in FIG. 8, the transmission time determination unit 130 can determine the transmission ratios of each node as p1=0.50, p2=0.50, p3=0.33, p4=0.50, p5=0.50, p6=0.33, p7=0.33, and p8=0.5.

[0110] According to an embodiment of the present disclosure, the transmission time determination unit 130 can determine the transmission time of each base station device according to the transmission ratio of each base station device, so that two base station devices that are adjacent and have different uplink / downlink subframe configuration modes transmit data in orthogonal time. That is, the transmission time determination unit 130 can determine the start time and end time of the transmission time of the base station device within the reference time according to the transmission ratio of the base station device. In the present disclosure, the manner of setting the transmission time is not limited, and it is only required that the transmission times of two base station devices that are adjacent and have different modes are orthogonal, i.e., do not overlap. For example, when p1=0.50, p3=0.33, and base station device 1 and base station device 3 have different modes, the transmission time determination unit 130 can determine that base station device 1 transmits in the 0.5 part before the reference time, and base station device 2 transmits in the 0.33 part after the reference time.

[0111] As described above, according to the embodiment of the present disclosure, the transmission time determination unit 130 can determine the transmission time of each base station device by linear programming so that the transmission times of adjacent base station devices having different modes are orthogonal.

[0112] According to an embodiment of the present disclosure, after the mode determination unit 120 determines the mode of each base station device and the transmission time determination unit 130 determines the transmission time of each base station device, the electronic device 100 can transmit the mode of the uplink / downlink subframe configuration of the base station device and the transmission time of the base station device to each base station device via the communication unit 140. For example, the mode may include the number of the mode, and the transmission time may include the start time and end time of the transmission time of the base station device within a reference time, or the start time and transmission ratio of the transmission time of the base station device within a reference time.

[0113] According to an embodiment of the present disclosure, the transmission time determination unit 130 can determine the transmission time of each base station equipment according to the mode of each base station equipment determined by the mode determination unit 120. That is, the present disclosure is applicable to a scenario in which an operator intends to deploy a certain number of base station equipment in a predetermined area. Alternatively, the transmission mode of each base station equipment may be determined in advance, and the transmission time determination unit 130 determines the transmission time of each base station equipment according to the determined mode of the base station equipment. That is, the present disclosure is also applicable to a scenario in which some base station equipment whose mode has been determined already exists in the current network.

[0114] According to an embodiment of the present disclosure, after the transmission time determination unit 130 determines the transmission time for each base station device, if a certain base station device is again subjected to interference, the certain base station device can transmit information indicating that the certain base station device is subjected to interference to the electronic device 100. This occurs, for example, when a certain base station device changes its mode, when the location of the base station device changes, when the environment of the base station device changes, etc. The electronic device 100 can re-execute the above-described procedure for the certain base station device and its neighboring base station devices, i.e., determine the mode for each of the base station device subjected to interference and its neighboring base station devices, and determine the transmission time for each of the base station device subjected to interference and its neighboring base station devices. That is, the electronic device 100 can receive information indicating that the base station device is being interfered with from the base station device, redetermine an interference relationship graph between the base station device and the adjacent base station device of the base station device according to the respective environmental information and / or transmission beam information of the base station device and the adjacent base station device of the base station device, determine an uplink / downlink subframe configuration mode of each base station device according to the redetermined interference relationship graph, and determine a transmission time of each base station device according to the uplink / downlink subframe configuration mode of each base station device so that two adjacent base station devices having different uplink / downlink subframe configuration modes transmit data in orthogonal time. That is, the electronic device 100 can execute an operation according to the above-mentioned form, and the object is changed from all base station devices to the base station device being interfered with and its adjacent base station device.

[0115] According to an embodiment of the present disclosure, if a base station device is again subjected to interference, the electronic device 100 can re-execute the above procedure with all base station devices as objects.

[0116] Therefore, according to the embodiment of the present disclosure, the electronic device 100 can determine the mode in units of connected subgraphs for each mode according to the interference relationship graph between multiple base station devices, and the nodes in one connected subgraph adopt the same mode, thereby avoiding interference between adjacent nodes with different modes as much as possible. Furthermore, if there are still adjacent nodes with different modes during the mode determination, the electronic device 100 can determine the transmission time of each node by linear programming, and make the transmission times of adjacent nodes with different modes orthogonal to avoid interference. In short, according to the electronic device 100 of the present disclosure, it is possible to effectively reduce interference due to differences in modes between multiple base station devices.

[0117] 3. Method Examples Next, a wireless communication method performed by the electronic device 100 in the wireless communication system according to an embodiment of the present disclosure will be described in detail.

[0118] FIG. 9 is a flowchart illustrating a wireless communication method performed by the electronic device 100 in a wireless communication system according to an embodiment of the present disclosure.

[0119] As shown in FIG. 9, in step S910, an interference relationship graph between multiple base station equipment is determined according to environmental information and / or transmission beam information of the base station equipment, where a node in the interference relationship graph represents a base station equipment, and an edge between two nodes represents that there is interference between the two base station equipment represented by the two nodes.

[0120] Next, in step S920, the uplink / downlink subframe configuration mode of each base station device is determined according to the interference relationship graph.

[0121] Next, in step S930, the transmission time of each base station equipment is determined according to the uplink / downlink subframe configuration mode of each base station equipment so that two adjacent base station equipments having different uplink / downlink subframe configuration modes transmit data at orthogonal times.

[0122] Preferably, the wireless communication method further includes receiving information from a base station equipment indicating that the base station equipment is being interfered with; re-determining an interference relationship graph between the base station equipment and an adjacent base station equipment of the base station equipment according to environmental information and / or transmission beam information of each of the base station equipment and the adjacent base station equipment of the base station equipment; determining an uplink / downlink subframe configuration mode of each base station equipment according to the re-determined interference relationship graph; and determining a transmission time of each base station equipment according to the uplink / downlink subframe configuration mode of each base station equipment so that two adjacent base station equipment having different uplink / downlink subframe configuration modes transmit data in orthogonal time.

[0123] Preferably, the wireless communication method further includes determining that there is no interference between the two base station equipment when one of the two base station equipment is in an indoor environment and the other base station equipment is in an outdoor environment.

[0124] Preferably, the wireless communication method further includes determining that there is no interference between the two base station equipment when a transmission beam direction of one of the two base station equipments is away from the other base station equipment and a transmission beam direction of the other base station equipment is away from the one base station equipment.

[0125] Preferably, the wireless communication method further includes determining whether there is interference between the base stations according to the location information of the base station equipment, the transmission power information and the frequency domain resources used.

[0126] Preferably, determining whether there is interference between the two base station equipments further includes: determining a signal-to-interference and noise ratio according to location information and transmission power information of the two base station equipments when frequency domain resources used by the two base station equipments are identical or adjacent; and determining that there is interference between the two base station equipments when the signal-to-interference and noise ratio is smaller than a predetermined threshold.

[0127] Preferably, determining the mode of the uplink / downlink subframe configuration of each base station equipment includes: for each mode in one or more candidate uplink / downlink subframe configuration modes of each base station equipment, determining an interference relationship graph corresponding to the mode, where the candidate uplink / downlink subframe configuration modes of the base station equipment represented by each node in the interference relationship graph corresponding to the mode include the mode; for the interference relationship graph corresponding to each mode, determining one or more connected subgraphs in the interference relationship graph, where each node in the connected subgraph is connected to at least one other node in the connected subgraph; and determining the mode of the uplink / downlink subframe configuration of each base station equipment according to each connected subgraph corresponding to each mode and the one or more isolated nodes.

[0128] Preferably, determining the mode of the uplink / downlink subframe configuration of each base station equipment includes: a. setting each connected subgraph corresponding to each mode as an initial plurality of connected subgraphs; b. selecting one or more connected subgraphs from the plurality of connected subgraphs, and determining the mode of the uplink / downlink subframe configuration of the base station equipment represented by a node in the selected connected subgraph as the mode corresponding to the selected connected subgraph; c. removing nodes in the selected connected subgraph from connected subgraphs other than the selected connected subgraph among the plurality of connected subgraphs to generate updated plurality of connected subgraphs; and d. repeatedly performing steps b and c until there are no more connected subgraphs.

[0129] Preferably, selecting one or more connected subgraphs from the plurality of connected subgraphs comprises selecting one or more connected subgraphs from the plurality of connected subgraphs depending on a number of nodes in the connected subgraph or a throughput of the connected subgraph indicating a product of the number of nodes in the connected subgraph and a throughput of a mode corresponding to the connected subgraph.

[0130] Preferably, determining the uplink / downlink subframe configuration mode of each base station equipment includes, for each isolated node in one or more isolated nodes for which the uplink / downlink subframe configuration mode has not yet been determined, determining the uplink / downlink subframe configuration mode for the base station equipment represented by the isolated node in accordance with one of: a rule for randomly selecting one mode from candidate uplink / downlink subframe configuration modes of the base station equipment represented by the isolated node; a rule for selecting a mode that maximizes throughput from candidate uplink / downlink subframe configuration modes of the base station equipment represented by the isolated node; and a rule for selecting the same candidate uplink / downlink subframe configuration mode as base station equipment represented by other isolated nodes from candidate uplink / downlink subframe configuration modes of the base station equipment represented by the isolated node.

[0131] Preferably, determining the mode of the uplink / downlink subframe configuration of each base station equipment includes determining a priority in determining the mode of the uplink / downlink subframe configuration for the base station equipment represented by the isolated node according to a degree of the isolated node, the degree representing the number of nodes adjacent to the isolated node in the interference relationship graph and for which the mode of the uplink / downlink subframe configuration has not yet been determined.

[0132] Preferably, determining the transmission time of each base station equipment includes determining a transmission ratio of each base station equipment representing a proportion of the transmission time of the base station equipment in a reference time according to an uplink / downlink subframe configuration mode of each base station equipment, and determining the transmission time of each base station equipment according to the transmission ratio of each base station equipment so that two adjacent base station equipment having different uplink / downlink subframe configuration modes transmit data in orthogonal time.

[0133] Preferably, determining the transmission ratio of each base station equipment includes determining the transmission ratio of the base station equipment as 1 for base station equipment of adjacent base station equipment having the same uplink / downlink subframe configuration mode, and determining the transmission ratio of the base station equipment as less than 1 for base station equipment of adjacent base station equipment having a different uplink / downlink subframe configuration mode.

[0134] Preferably, determining the transmission ratio of each base station equipment includes: determining the transmission ratio of each base station equipment for each of adjacent base station equipment having different uplink / downlink subframe configuration modes by linear programming; determining an objective function according to the transmission ratio of each base station equipment having different uplink / downlink subframe configuration modes of adjacent base station equipment and the throughput of the uplink / downlink subframe configuration mode of each base station equipment; and the constraint condition includes that the sum of the transmission ratios of two adjacent base station equipment having different uplink / downlink subframe configuration modes is not greater than 1.

[0135] Preferably, the wireless communication method further includes transmitting to each base station equipment the uplink / downlink subframe configuration mode of the base station equipment and the transmission time of the base station equipment, respectively.

[0136] According to an embodiment of the present disclosure, the body performing the above method may be the electronic device 100 according to an embodiment of the present disclosure, so all the embodiments related to the electronic device 100 above are applicable here.

[0137] FIG. 10 shows a signaling flowchart for determining the mode and transmission time of the uplink / downlink subframe configuration of a base station device according to an embodiment of the present disclosure. In FIG. 10, the electronic device may be realized by the electronic device 100 described above. In step S1001, the base station device transmits at least one of environmental information, transmission beam information, location information, transmission power information, and used frequency domain resource information to the electronic device. Next, in step S1002, the electronic device determines an interference relationship graph between the multiple base station devices according to the information of the multiple base station devices after collecting information of the multiple base station devices. Next, in step S1003, the electronic device determines the mode of the uplink / downlink subframe configuration of each base station device according to the interference relationship graph so that adjacent base station devices in the interference relationship graph use the same mode as much as possible. Next, in step S1004, the electronic device determines the transmission time of each base station device so that adjacent base station devices in the interference relationship graph and having different modes alternately perform uplink / downlink transmission silently. Next, in step S1005, the electronic device transmits the mode and transmission time set therefor to each base station device. Next, in step S1006, each base station device transmits data according to its respective mode and transmission time. If the base station device is interfered with again during operation, in step S1007, the base station device transmits information indicating that it is interfered with to the electronic device. Next, in step S1008, the electronic device re-executes steps S1002, S1003, and S1004 for the interfered base station device and its surrounding base station devices, i.e., determines the interference relationship graph between the interfered base station device and its surrounding base station devices, determines the uplink / downlink subframe configuration of the interfered base station device and its surrounding base station devices, and can determine the transmission time of the interfered base station device and its surrounding base station devices. Next, in step S1009, the electronic device transmits the updated mode and transmission time to the corresponding base station device. In this way, the electronic device reasonably sets the mode and transmission time for each base station device.

[0138] 10 shows an example in which an electronic device sets a mode and a transmission time for a base station device. For multiple base station devices with modes set, the electronic device can directly execute step S1004, determine a transmission time for each base station device according to the mode of each base station device, and send the determined transmission time to each base station device.

[0139] <4. Application Examples> The technology of the present disclosure can be applied to various products. For example, the electronic device 100 can be realized as any type of server, such as a tower server, a rack server, and a blade server. The electronic device 100 can be a control module mounted on the server (for example, an integrated circuit module including a single chip, and a card or blade inserted into a slot of a blade server).

[0140] 11 is a block diagram illustrating an example of a server 1100 capable of implementing an electronic device 100 according to the present disclosure. The server 1100 includes a processor 1101, a memory 1102, a storage device 1103, a network interface 1104, and a bus 1106.

[0141] The processor 1101 is, for example, a central processing unit (CPU) or a digital signal processor (DSP), and controls the functions of the server 1100. The memory 1102 includes a random access memory (RAM) and a read-only memory (ROM), and stores data and programs executed by the processor 1101. The storage device 1103 includes a storage medium such as a semiconductor memory and a hard disk.

[0142] The network interface 1104 is a communication interface for connecting the server 1100 to a communication network 1105. The communication network 1105 may be a core network such as an evolved packet core network (EPC) or a packet data network (PDN) such as the Internet.

[0143] The bus 1106 interconnects the processor 1101, the memory 1102, the storage device 1103, and the network interface 1104. The bus 1106 may include two or more buses each having a different speed (e.g., a high-speed bus and a low-speed bus).

[0144] In the server 1100 shown in Fig. 11, the interference relationship graph determination unit 110, the mode determination unit 120, and the transmission time determination unit 130 described with reference to Fig. 1 may be realized by a processor 1101, and the communication unit 140 described with reference to Fig. 1 may be realized by a network interface 1104. For example, the processor 1101 can execute the functions of determining an interference relationship graph, determining the uplink / downlink subframe configuration of each base station device, and determining the transmission time of each base station device by executing commands stored in the memory 1102 or the storage device 1103.

[0145] Although the preferred embodiment of the present disclosure has been described above with reference to the drawings, the present disclosure is of course not limited to the above examples. It should be understood that those skilled in the art can obtain various modifications and changes within the scope of the appended claims, and these modifications and changes are also included in the technical scope of the present disclosure.

[0146] For example, all of the units indicated by dashed blocks in the illustrated functional block diagram can be selected in the device to which the functional unit corresponds, and the required functions can be realized by combining each selectable functional unit in an appropriate manner.

[0147] For example, in the above embodiments, multiple functions included in one unit can be realized by separate devices. Instead, in the above embodiments, multiple functions realized by multiple units can each be realized by a separate device. Also, one of the above functions can be realized by multiple units. It goes without saying that such configurations are included in the technical scope of the present disclosure.

[0148] In this specification, the steps described in the flowcharts include not only processes that are executed in chronological order, but also processes that are not necessarily executed in chronological order but are executed in parallel or independently. It goes without saying that the order of steps that are executed in chronological order may be changed.

[0149] Although the embodiments of the present disclosure have been described in detail above in conjunction with the drawings, it should be understood that the above-described embodiments are for the purpose of illustrating the present disclosure and do not limit the present disclosure. Those skilled in the art can make various modifications and changes to the above-described embodiments without departing from the spirit and scope of the present disclosure. Therefore, the scope of the present disclosure is limited only by the appended claims and their equivalents.

Claims

1. determining an interference relationship graph between the plurality of base station equipment according to at least one of environmental information and transmission beam information of each of the plurality of base station equipment, a node in the interference relationship graph representing a base station equipment, and an edge between two nodes representing that there is interference between the two base station equipment represented by the two nodes; determining an uplink or downlink subframe configuration mode of each base station device according to the interference relationship graph; a processing circuit configured to determine a transmission period of each base station equipment according to an uplink or downlink subframe configuration mode of each base station equipment such that the transmission periods of two adjacent base station equipments having different uplink or downlink subframe configuration modes do not overlap; The processing circuitry further comprises: determining, for each mode in one or more candidate uplink or downlink subframe configuration modes of each base station device, an interference relationship graph corresponding to said mode, the interference relationship graph corresponding to said mode including base station devices whose candidate uplink or downlink subframe configuration modes include said mode; For an interference relationship graph corresponding to each mode, determining one or more connected subgraphs in the interference relationship graph, each node in the connected subgraph being connected to at least one other node in the connected subgraph; An electronic device configured to determine a mode of uplink or downlink subframe configuration for each base station device according to each connected subgraph and one or more isolated nodes corresponding to each mode.

2. The processing circuitry further comprises: receiving information from a base station device indicating that the base station device is experiencing interference; determining an updated interference relationship graph between the base station equipment and the neighboring base station equipment of the base station equipment according to at least one of environmental information and transmission beam information of each of the base station equipment and the neighboring base station equipment of the base station equipment; Determining an uplink or downlink subframe configuration mode of each base station device according to the updated interference relationship graph; The electronic device according to claim 1, configured to determine the transmission period of each base station device according to the uplink or downlink subframe configuration mode of each base station device so that the transmission periods of two adjacent base station devices having different uplink or downlink subframe configuration modes do not overlap.

3. The processing circuitry further comprises:

2. The electronic device of claim 1, configured to determine that there is no interference between two base station devices when one of the two base station devices is in an indoor environment and the other of the two base station devices is in an outdoor environment.

4. The processing circuitry further comprises:

2. The electronic device of claim 1, configured to determine that there is no interference between two base station equipment when a transmission beam direction of one of the two base station equipment is away from the other base station equipment and when a transmission beam direction of the other base station equipment is away from the one base station equipment.

5. The processing circuitry further comprises: When the frequency domain resources used by the two base station devices are the same or adjacent to each other, a signal-to-interference and noise ratio is determined according to the location information and the transmission power information of the two base station devices; 2. The electronic device of claim 1, configured to determine that there is interference between the two base station devices if the signal to interference and noise ratio is less than a predetermined threshold.

6. The processing circuitry further comprises: a. A plurality of initial connected subgraphs are set, each of which corresponds to a respective mode; b. selecting one or more connected subgraphs from the plurality of connected subgraphs and determining a mode of an uplink or downlink subframe configuration of the base station equipment represented by a node in the selected connected subgraph as a mode corresponding to the selected connected subgraph; c) removing nodes in the selected connected subgraph from connected subgraphs other than the selected connected subgraph among the plurality of connected subgraphs to generate a plurality of updated connected subgraphs; d. The electronic device of claim 1, configured to repeatedly perform steps b and c until no connected subgraphs remain.

7. The processing circuitry further comprises:

7. The electronic device of claim 6, configured to select one or more connected subgraphs from the plurality of connected subgraphs depending on a number of nodes in the connected subgraph or a throughput of the connected subgraph indicating a product of the number of nodes in the connected subgraph and a throughput of a mode corresponding to the connected subgraph.

8. The processing circuitry further comprises: For each isolated node in the one or more isolated nodes for which a mode of uplink or downlink subframe configuration has not yet been determined, a rule for randomly selecting one mode from the modes of candidate uplink or downlink subframe configurations of the base station equipment represented by the isolated node; a rule for selecting from among candidate uplink or downlink subframe configuration modes of the base station equipment represented by the isolated node a mode that maximizes throughput; and According to any of the rules for selecting, from among the candidate uplink or downlink sub-frame configuration modes of the base station equipment represented by the isolated node, a candidate uplink or downlink sub-frame configuration mode that is the same as that of the base station equipment represented by another isolated node, 7. The electronic device of claim 6, configured to determine a mode of uplink or downlink sub-frame configuration for a base station equipment represented by the isolated node.

9. The processing circuitry further comprises: determining a transmission ratio for each base station device, the ratio representing a ratio of a transmission period of the base station device to a reference period, according to an uplink or downlink subframe configuration mode of each base station device; The electronic device according to claim 1, configured to determine the transmission period of each base station device according to the transmission ratio of each base station device so that the transmission periods of two adjacent base station devices having different uplink or downlink subframe configuration modes do not overlap.

10. The processing circuitry further comprises: determining a transmission ratio of the adjacent base station device to be 1 for a base station device having the same uplink or downlink subframe configuration mode; The electronic device according to claim 9, configured to determine a transmission ratio of the base station device to be less than 1 for a base station device having a different uplink or downlink subframe configuration mode from a neighboring base station device.

11. The processing circuitry further comprises: The neighboring base station devices are configured to determine a transmission ratio of each base station device by a linear programming method for each base station device having a different uplink or downlink subframe configuration mode; The electronic device of claim 9, wherein the objective function is determined according to a transmission ratio of each base station device having a different uplink or downlink subframe configuration mode of adjacent base station devices and a throughput of the uplink or downlink subframe configuration mode of each base station device, and the constraint condition includes that the sum of the transmission ratios of two adjacent base station devices having different uplink or downlink subframe configuration modes is not greater than 1.

12. A wireless communication method performed by an electronic device, comprising: determining an interference relationship graph between a plurality of base station devices according to at least one of environmental information and transmission beam information of each of the plurality of base station devices, a node in the interference relationship graph representing a base station device, and an edge between two nodes representing that there is interference between the two base station devices represented by the two nodes; determining an uplink or downlink subframe configuration mode of each base station device according to the interference relationship graph; determining a transmission period of each base station device according to an uplink or downlink subframe configuration mode of each base station device such that the transmission periods of two adjacent base station devices having different uplink or downlink subframe configuration modes do not overlap; Determining a mode of an uplink or downlink subframe configuration of each base station device includes: determining, for each mode in one or more candidate uplink or downlink subframe configuration modes of each base station device, an interference relationship graph corresponding to said mode, the interference relationship graph corresponding to said mode including base station devices whose candidate uplink or downlink subframe configuration modes include said mode; For an interference relationship graph corresponding to each mode, determining one or more connected subgraphs in the interference relationship graph, each node in the connected subgraph being connected to at least one other node in the connected subgraph; and determining a mode of an uplink or downlink subframe configuration of each base station device according to each connected subgraph and one or more isolated nodes corresponding to each mode.

13. receiving information from a base station device that indicates that the base station device is experiencing interference; determining an updated interference relationship graph between the base station equipment and the neighboring base station equipment of the base station equipment according to at least one of environmental information and transmission beam information of each of the base station equipment and the neighboring base station equipment of the base station equipment; determining an uplink or downlink subframe configuration mode of each base station device according to the updated interference relationship graph; The wireless communication method according to claim 12, further comprising: determining a transmission time of each base station device according to an uplink or downlink subframe configuration mode of each base station device so that transmission periods of two adjacent base station devices having different uplink or downlink subframe configuration modes do not overlap.

14. 13. The wireless communication method of claim 12, further comprising: determining that there is no interference between two base station equipment when one of the two base station equipment is in an indoor environment and the other of the two base station equipment is in an outdoor environment.

15. 13. The wireless communication method of claim 12, further comprising: determining that there is no interference between two base station equipment when a transmission beam direction of one of the two base station equipment is away from the other base station equipment and when a transmission beam direction of the other base station equipment is away from the one base station equipment.

16. When the frequency domain resources used by the two base station devices are the same or adjacent to each other, determining a signal-to-interference and noise ratio according to location information and transmission power information of the two base station devices; 13. The wireless communication method of claim 12, further comprising: determining that there is interference between the two base station devices if the signal to interference and noise ratio is less than a predetermined threshold.

17. Determining a mode of an uplink or downlink subframe configuration of each base station device includes: a. determining a plurality of initial connected subgraphs, each of the connected subgraphs corresponding to each mode; b. selecting one or more connected subgraphs from the plurality of connected subgraphs and determining a mode of an uplink or downlink subframe configuration of the base station equipment represented by a node in the selected connected subgraph as a mode corresponding to the selected connected subgraph; c) removing nodes in the selected connected subgraph from connected subgraphs other than the selected connected subgraph of the plurality of connected subgraphs to generate updated connected subgraphs; d. repeatedly performing steps b and c until no connected subgraphs remain.

18. A computer readable storage medium containing executable computer instructions which, when executed on a computer, cause the computer to perform the wireless communication method of claim 12.

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