Time domain multiplexing method and device, communication equipment and readable storage medium

Abstract

The invention relates to a time domain multiplexing method and device, communication equipment and a computer readable storage medium. The method comprises the following steps: determining a first energy supply window width of a wireless frame corresponding to a backscattering cell in a backscattering cell cluster; according to the first energy supply window width, determining a time domain overlapping width between wireless frames corresponding to adjacent backscattering cells; and performing time domain multiplexing on the backscattering cells in the backscattering cell cluster according to the time domain overlapping width. By adopting the method, the time domain resource utilization rate of the environment backscattering system can be improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a time domain multiplexing method, apparatus, communication device and computer-readable storage medium. Background Art

[0002] In the fusion system of cellular mobile network and backscatter Internet of Things, there are four types of wireless nodes, including cellular mobile network base station (BaseStation, BS), cellular mobile network terminal (User Equipment, UE), backscatter terminal (BackscatterDevice, BD) and backscatter receiver (Backscatter Receiver, BR). The backscatter terminal can be divided into non-energy storage passive transmission terminal (Device 1), energy storage passive transmission terminal (Device 2a) and energy storage active transmission terminal (Device 2b).

[0003] In the prior art, in order to achieve the coexistence of three types of backscatter terminals in the system, a wireless power supply window is usually designed at the air interface. The backscatter terminal with energy storage capability can collect energy in the wireless power supply window. During this period, the backscatter terminal is in a non-communication activation state and will not perform RF reception and transmission.

[0004] However, since the wireless power supply window occupies a part of the time domain resources, the time domain resource utilization of the environmental backscatter system is not high. Summary of the invention

[0005] Based on this, it is necessary to provide a time domain multiplexing method, apparatus, communication equipment, computer-readable storage medium and computer program product that can improve resource utilization in response to the above technical problems.

[0006] In a first aspect, the present application provides a time domain multiplexing method, comprising:

[0007] Determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster;

[0008] Determining, according to the first energy supply window width, a time domain overlap width between radio frames corresponding to adjacent backscatter cells;

[0009] The backscatter cells in the backscatter cell cluster are time-domain multiplexed according to the time-domain overlap width.

[0010] In one of the embodiments, determining a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster includes:

[0011] Determining a terminal type of a backscatter terminal in the backscatter cell;

[0012] Determine the wireless power supply frame structure corresponding to the terminal type according to the pre-stored corresponding relationship;

[0013] According to the wireless power supply frame structure, obtaining a second power supply window width corresponding to the backscatter terminal;

[0014] According to the maximum value of the second power supply window widths, the first power supply window width of the radio frame corresponding to the backscatter cell is obtained.

[0015] In one embodiment, the method further comprises:

[0016] Determine at least one terminal type, and determine a wireless power supply frame structure corresponding to each terminal type; the wireless power supply frame structure includes the second power supply window width;

[0017] The correspondence between the terminal type and the wireless power supply frame structure is stored.

[0018] In one of the embodiments, determining the wireless power supply frame structure corresponding to each terminal type includes:

[0019] Acquire the wireless energy storage requirement of the backscatter terminal corresponding to the terminal type, and the received signal strength of the backscatter terminal corresponding to the terminal type for wireless energy collection;

[0020] Determining a third energy supply window width according to the wireless energy storage demand and the received signal strength;

[0021] Obtaining the second energy supply window width according to the third energy supply window width and a preset window width margin;

[0022] The wireless power supply frame structure corresponding to the terminal type is obtained according to the second power supply window width.

[0023] In one embodiment, determining the time domain overlap width between the radio frames corresponding to the adjacent backscatter cells according to the first energy supply window width includes:

[0024] The time domain overlap width is obtained according to the minimum value of the first energy supply window widths.

[0025] In one of the embodiments, performing time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width includes:

[0026] According to the time domain overlap width, overlapping processing is performed on the wireless frames corresponding to the adjacent backscatter cells in the time domain;

[0027] According to the wireless frames after the overlapping process, the backscatter cells in the backscatter cell cluster are time-domain multiplexed.

[0028] In one embodiment, the method further comprises:

[0029] The backscatter cell cluster is determined according to neighboring cell interference and / or service correlation between backscatter cells.

[0030] In a second aspect, the present application also provides a time domain multiplexing device, including:

[0031] A power supply window module, used to determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster;

[0032] An overlapping width module, used to determine the time domain overlapping width between the wireless frames corresponding to the adjacent backscatter cells according to the first energy supply window width;

[0033] A time domain multiplexing module is used to perform time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width.

[0034] In a third aspect, the present application further provides a communication device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0035] Determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster;

[0036] Determining, according to the first energy supply window width, a time domain overlap width between radio frames corresponding to adjacent backscatter cells;

[0037] The backscatter cells in the backscatter cell cluster are time-domain multiplexed according to the time-domain overlap width.

[0038] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0039] Determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster;

[0040] Determining, according to the first energy supply window width, a time domain overlap width between radio frames corresponding to adjacent backscatter cells;

[0041] The backscatter cells in the backscatter cell cluster are time-domain multiplexed according to the time-domain overlap width.

[0042] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0043] Determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster;

[0044] Determining, according to the first energy supply window width, a time domain overlap width between radio frames corresponding to adjacent backscatter cells;

[0045] The backscatter cells in the backscatter cell cluster are time-domain multiplexed according to the time-domain overlap width.

[0046] The above-mentioned time domain multiplexing method, apparatus, communication equipment, computer-readable storage medium and computer program product determine the first power supply window width of the wireless frame corresponding to the backscatter cell in the backscatter cell cluster, determine the time domain overlap width between the wireless frames corresponding to adjacent backscatter cells according to the first power supply window width, and perform time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width; the wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster can be overlapped in the time domain, so that the signal transmission of the adjacent cells is performed within the power supply window of one cell, thereby improving the time domain resource utilization rate of the environmental backscatter system. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A schematic diagram of a time domain multiplexing networking method for a cellular networking of an environmental backscatter system;

[0049] Figure 2 Schematic diagram of a wireless power supply window for an ambient backscatter system;

[0050] Figure 3 A schematic diagram of a flow chart of a time domain multiplexing method in one embodiment;

[0051] Figure 4 A schematic diagram of time domain multiplexing of a time domain multiplexing networking mode of a cellular networking of an environmental backscatter system in one embodiment;

[0052] Figure 5 A schematic diagram of a flow chart of an adaptive time domain multiplexing networking method based on a wireless power supply frame structure in an environmental backscatter system in one embodiment;

[0053] Figure 6 is a schematic flow chart of a time domain multiplexing method in another embodiment;

[0054] Figure 7 is a structural block diagram of a time domain multiplexing device in one embodiment;

[0055] Figure 8 FIG. 4 is a diagram showing the internal structure of a communication device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] The fusion system of cellular mobile network and backscatter Internet of Things includes four types of wireless nodes: BS, UE, BD, and BR. BS and UE are wireless nodes of cellular mobile network. Wireless nodes containing active sending units can be used as RF excitation signals of backscatter Internet of Things. The backscatter system uses the modulation and reflection of RF signals of cellular mobile network to realize information transmission. Among them, BD modulates and reflects environmental RF signals in the backscatter system to realize information transmission, and BR receives and demodulates backscatter signals in the backscatter system.

[0058] At present, in the existing cellular mobile network and backscatter Internet of Things fusion system, there are generally two multiplexing modes for the cellular networking of the environmental backscatter system: frequency domain multiplexing networking and time domain multiplexing networking. Figure 1 In the time domain multiplexing networking mode, in order to avoid co-frequency interference of neighboring cells, the time domain positions of the wireless frames of neighboring cells are staggered. Therefore, cellular networking requires three times the time domain resources compared to single-cell communication.

[0059] Backscatter terminals can be divided into three categories, namely, non-energy storage passive transmission terminals (Device 1), energy storage passive transmission terminals (Device 2a) and energy storage active transmission terminals (Device 2b). Among them, Device 1 can only realize additional modulation and reflection of the carrier signal of the main system (cellular mobile network). Compared with Device 1, Device 2a has an additional energy storage circuit, which can realize a certain amplitude of main system carrier signal amplification. Therefore, Device 2a will have greater coverage capability than Device 1, but at the same time, Device 2a also needs additional environmental energy supply design to ensure its coverage performance. Device 2b can actively generate carrier signals, so Device 2b is closer to traditional active terminals rather than traditional backscatter terminals.

[0060] In order to achieve the coexistence of three types of backscatter terminals in the system, a corresponding wireless power supply window can be designed at the air interface to ensure that the BD with energy storage capability collects energy through the main system air interface, such as Figure 2 As shown, it can be seen that in the environmental backscatter system, in order to meet the energy storage requirements of BD, it may be necessary to reserve a certain time window. During this time window, BD is in a non-communication activation state and does not perform RF reception and transmission. Based on this, the traditional environmental backscatter technology has the problem of low time domain resource utilization.

[0061] Based on the above-mentioned traditional technology, the time domain multiplexing method provided in the embodiment of the present application overlaps the wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster in the time domain, so that the signal transmission of the adjacent cells is carried out within the power supply window of one cell, thereby improving the time domain resource utilization rate of the environmental backscatter system.

[0062] It should be noted that the beneficial effects brought about by the embodiments of the present application or the technical problems solved are not limited to this one, but may also include other implicit or related problems. For details, please refer to the description of the following embodiments.

[0063] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0064] In an exemplary embodiment, Figure 3As shown, a time domain multiplexing method is provided. This embodiment takes the method applied to a cellular mobile network base station as an example. It can be understood that the method can also be applied to a core network, a cellular mobile network terminal or a backscatter terminal, and this application does not limit this. In this embodiment, the method includes the following steps:

[0065] Step S102: determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster.

[0066] The backscatter cell cluster may be a plurality of backscatter cells that use all available time-frequency resources together. The backscatter cell may be a cell where a backscatter terminal exists. The first energy supply window width may be a time window width for energy storage in a wireless frame corresponding to the backscatter cell.

[0067] In a specific implementation, the base station can predetermine a backscatter cell cluster. For each backscatter cell in the backscatter cell cluster, the base station can determine the wireless frame structure corresponding to the backscatter cell based on the wireless energy storage requirements of each backscatter terminal within the coverage area of ​​the backscatter cell. The time window width for the backscatter cell to store energy in the wireless frame structure is the first energy supply window width.

[0068] In practical applications, backscatter cell clusters can be divided according to factors such as neighboring cell interference and service relevance. Since the type of backscatter terminal can reflect the wireless energy storage demand of the backscatter terminal, in the current service cycle, for each backscatter cell in the backscatter cell cluster, the wireless frame structure that meets the wireless energy storage demand of each backscatter terminal can be determined according to the type of each backscatter terminal within the coverage range of the backscatter cell, as the wireless frame structure corresponding to the backscatter cell, and the wireless energy supply window width in the wireless frame structure is set to As the first energy supply window width, is the index of the backscatter cell in the backscatter cell cluster.

[0069] Step S104: Determine the time domain overlap width between radio frames corresponding to adjacent backscatter cells according to the first power supply window width.

[0070] The time domain overlap width may be the width of the overlap of the wireless frames corresponding to the adjacent backscatter cells in the time domain.

[0071] In a specific implementation, the base station can determine the time domain overlapping width of the radio frames corresponding to adjacent backscatter cells in the backscatter cell cluster according to the first power supply window width of the radio frames corresponding to each backscatter cell in the backscatter cell cluster to obtain the time domain overlapping width.

[0072] In practical applications, the wireless power supply window width corresponding to each backscattering cell in the backscattering cell cluster can be The minimum value of the time domain overlap width of the wireless frames corresponding to the adjacent backscattering cells is obtained The specific calculation formula can be .

[0073] Step S106: performing time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width.

[0074] In a specific implementation, the base station can overlap the wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster in the time domain according to the time domain overlap width, so that the backscatter terminals in each backscatter cell can store energy and transmit information according to the overlapped wireless frames, thereby realizing time domain multiplexing between the backscatter cells in the backscatter cell cluster.

[0075] The above-mentioned time domain multiplexing method determines the first power supply window width of the wireless frame corresponding to the backscatter cell in the backscatter cell cluster, determines the time domain overlap width between the wireless frames corresponding to adjacent backscatter cells according to the first power supply window width, and performs time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width; the wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster can be overlapped in the time domain, so that the signal transmission of the adjacent cell is carried out within the power supply window of one cell, thereby improving the time domain resource utilization rate of the environmental backscatter system.

[0076] In an exemplary embodiment, the above-mentioned step S102 may specifically include: determining the terminal type of the backscatter terminal in the backscatter cell; determining the wireless power supply frame structure corresponding to the terminal type according to a pre-stored correspondence relationship; obtaining the second power supply window width corresponding to the backscatter terminal according to the wireless power supply frame structure; and obtaining the first power supply window width of the wireless frame corresponding to the backscatter cell according to the maximum value of the second power supply window width.

[0077] Among them, the terminal type can be but is not limited to the type of different backscatter terminals divided according to energy storage capacity. The corresponding relationship can be the corresponding relationship between the terminal type and the wireless power supply frame structure. The wireless power supply frame structure can be a frame structure of a wireless frame including an energy storage time window. The second energy supply window width can be the time window width for energy storage in the wireless frame structure corresponding to the backscatter terminal.

[0078] In a specific implementation, the correspondence between the terminal type and the wireless power supply frame structure can be pre-stored. After the base station determines the terminal type of each backscatter terminal within the coverage range of the backscatter cell, it can determine the wireless power supply frame structure corresponding to each terminal type according to the correspondence, and then obtain the second power supply window width corresponding to each backscatter terminal according to the wireless power supply window width in the wireless power supply frame structure, and select the maximum value from the second power supply window widths corresponding to each backscatter terminal within the coverage range of the backscatter cell as the first power supply window width corresponding to the backscatter cell.

[0079] In practical applications, the backscatter cell can be The index of the backscatter terminal in the coverage area is set to For each backscatter terminal, the terminal type can be determined according to the wireless energy storage demand, the wireless energy supply frame structure corresponding to the terminal type can be found in the predetermined correspondence, and the backscatter terminal can be obtained according to the wireless energy supply window width corresponding to the wireless energy supply frame structure. Corresponding wireless power supply window width , i.e. the second energy supply window width, which can then be used in the backscattering cell The wireless power supply window width corresponding to each backscatter terminal within the coverage area Select the maximum value from the above to get the first energy supply window width The specific calculation formula can be .

[0080] In this embodiment, by determining the terminal type of the backscatter terminal in the backscatter cell, the wireless power supply frame structure corresponding to the terminal type is determined according to the pre-stored correspondence relationship, and the second power supply window width corresponding to the backscatter terminal is obtained according to the wireless power supply frame structure. According to the maximum value of the second power supply window width, the first power supply window width of the wireless frame corresponding to the backscatter cell is obtained. The wireless power supply window width that meets the wireless energy storage requirements of all backscatter terminals in the backscatter cell can be obtained, and then the wireless power supply window width is used to determine the maximum time domain overlap width allowed between adjacent backscatter cells, so as to achieve maximum reuse of time domain resources and further improve the utilization rate of time domain resources.

[0081] It can be understood that before determining the terminal type of the backscatter terminal, multiple terminal types can be pre-set, and the wireless power supply frame structure corresponding to each terminal type can be determined. In an exemplary embodiment, the above-mentioned time domain multiplexing method can also specifically include: determining at least one terminal type, and determining the wireless power supply frame structure corresponding to each terminal type; the wireless power supply frame structure includes a second power supply window width; and storing the correspondence between the terminal type and the wireless power supply frame structure.

[0082] In a specific implementation, the base station can determine multiple terminal types in advance according to the wireless energy storage requirements of the backscatter terminal, and set a corresponding wireless power supply frame structure for each terminal type. Different wireless power supply frame structures correspond to different second power supply window widths. The base station can then store the correspondence between multiple groups of terminal types and wireless power supply frame structures, so that after determining the terminal type of the backscatter terminal in the backscatter cell, the corresponding wireless power supply frame structure can be determined according to the pre-stored correspondence.

[0083] For example, in the fusion system of mobile cellular network and backscattering Internet of Things, it can be divided into terminal types, respectively ,in For each terminal type, a corresponding wireless power supply frame structure is set. Different wireless power supply frame structures correspond to different wireless power supply window widths. .

[0084] In this embodiment, by determining at least one terminal type and determining the wireless power supply frame structure corresponding to each terminal type, and storing the correspondence between the terminal type and the wireless power supply frame structure, the wireless power supply window width corresponding to the backscatter terminal can be directly determined according to the terminal type, thereby improving the efficiency of time domain multiplexing.

[0085] In an exemplary embodiment, the above-mentioned step of determining the wireless power supply frame structure corresponding to each terminal type may specifically include: obtaining the wireless energy storage demand of the backscatter terminal corresponding to the terminal type, and the received signal strength of the backscatter terminal corresponding to the terminal type for wireless energy collection; determining the third power supply window width according to the wireless energy storage demand and the received signal strength; obtaining the second power supply window width according to the third power supply window width and a pre-set window width margin; and obtaining the wireless power supply frame structure corresponding to the terminal type according to the second power supply window width.

[0086] Among them, the wireless energy storage demand may be, but is not limited to, the wireless energy storage energy demand of the backscatter terminal during normal operation. The received signal strength may be, but is not limited to, the cell edge received signal strength of the main system excitation carrier signal used for wireless energy collection of the backscatter terminal in the fusion system. The third power supply window width may be the wireless power supply window width corresponding to the backscatter terminal when the window width margin is not included. The window width margin may be the wireless power supply window width margin of the backscatter terminal.

[0087] In the specific implementation, set the terminal type The wireless energy storage energy requirement of the backscatter terminal in normal operation is , the cell edge received signal strength of the main system excitation carrier signal used for the backscatter terminal to perform wireless energy collection is , then the width of the third energy supply window can be ,in, is the energy conversion coefficient of wireless energy harvesting, In order to cope with the fluctuation of air interface excitation signal, the wireless power supply window width margin can be set , then the second energy supply window width can be the sum of the third energy supply window width and the window width margin, that is , the base station can set the terminal type The wireless power supply window width in the corresponding wireless power supply frame structure is set to the second power supply window width .

[0088] In this embodiment, by obtaining the wireless energy storage demand of the backscatter terminal corresponding to the terminal type and the received signal strength of the backscatter terminal for wireless energy collection corresponding to the terminal type, the third energy supply window width is determined according to the wireless energy storage demand and the received signal strength, and the second energy supply window width is obtained according to the third energy supply window width and a pre-set window width margin. According to the second energy supply window width, the wireless energy supply frame structure corresponding to the terminal type is obtained, and the corresponding wireless energy supply window width can be quickly determined according to the terminal type, thereby improving the efficiency of time domain multiplexing.

[0089] In an exemplary embodiment, the above step S104 may specifically include: obtaining the time domain overlap width according to the minimum value of the first energy supply window width.

[0090] In a specific implementation, the base station may select a minimum value from the first power supply window widths corresponding to the backscatter cells in the backscatter cell cluster as the time domain overlapping width corresponding to the backscatter cell cluster.

[0091] In practical applications, the calculation formula for the time domain overlap width can be ,in It is the wireless power supply window width corresponding to each backscatter cell in the backscatter cell cluster.

[0092] In this embodiment, by obtaining the time domain overlap width based on the minimum value in the first power supply window width, the time domain overlap width of the wireless frames between adjacent backscatter cells can be maximized while ensuring that there is no interference between adjacent backscatter cells, thereby maximizing the time domain resource utilization of the system.

[0093] In an exemplary embodiment, the above step S106 may specifically include: performing overlapping processing on the radio frames corresponding to adjacent backscatter cells in the time domain according to the time domain overlapping width; and performing time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the overlapped radio frames.

[0094] In a specific implementation, the base station may overlap the wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster according to the time domain overlap width to obtain the overlapped wireless frames, and then perform time domain multiplexing on each backscatter cell according to the overlapped wireless frames.

[0095] In practical applications, such as Figure 4 As shown, when the time domain overlap width is determined to be When the wireless frame N1 is overlapped with the adjacent wireless frame N2, in the overlapping area, the backscattering cell using the wireless frame N1 can transmit information, and at the same time, the backscattering cell using the wireless frame N2 can store energy, thereby realizing time domain multiplexing between the backscattering cells. Similarly, overlapping the wireless frame N2 with the adjacent wireless frame N3 can realize time domain multiplexing between other backscattering cells.

[0096] In this embodiment, the wireless frames corresponding to adjacent backscatter cells are overlapped in the time domain according to the time domain overlap width, and the backscatter cells in the backscatter cell cluster are time-domain multiplexed according to the overlapped wireless frames. The wireless power supply window of one cell can be used for information transmission of an adjacent cell. Since there is no information transmission in the wireless power supply window, the time domain utilization rate of the networking can be improved.

[0097] It is understandable that before determining the first power supply window width, backscatter cell clusters may be divided. In an exemplary embodiment, the above time domain multiplexing method may further include: determining backscatter cell clusters according to neighboring cell interference and / or service correlation between backscatter cells.

[0098] The neighboring cell interference may be interference between adjacent backscatter cells, and the service correlation may be service correlation between adjacent backscatter cells.

[0099] In a specific implementation, the base station can divide the backscattering cell clusters according to factors such as neighboring cell interference and service correlation between backscattering cells. For example, continuous backscattering cells with large neighboring cell interference and high service correlation can be classified into the same backscattering cell cluster.

[0100] In this embodiment, by determining the backscatter cell cluster according to the neighboring cell interference and / or service correlation between the backscatter cells, the backscatter cell clusters can be divided to achieve multiplexing between the backscatter cells, thereby improving resource utilization.

[0101] In order to facilitate those skilled in the art to have a deeper understanding of the embodiments of the present application, a specific example will be described below.

[0102] The present application proposes an adaptive time domain multiplexing networking method based on a wireless power supply frame structure in an environmental backscatter system. In the cellular networking of the environmental backscatter system, the wireless power supply window can be used to dynamically optimize the neighboring cell wireless frame arrangement in the time domain multiplexing. Compared with the current static full wireless frame staggered time domain multiplexing method, the time domain resource utilization can be maximized under the premise of satisfying the time domain stagger of the neighboring cell communication signal. Figure 5 , the method specifically comprises the following steps:

[0103] Step S201: In the fusion system of mobile cellular network and backscattering Internet of Things, according to the wireless energy storage demand of backscattering terminal (BD), it is divided into types, respectively ,in , and correspond the BD terminal code BD ID to its wireless energy storage type;

[0104] Step S202, for Terminal type, design A wireless power supply frame structure, Different wireless power supply frame structures correspond to different wireless power supply window widths. ,in It is The wireless energy storage energy demand of the normal operation of the terminal, It is the cell edge received signal strength of the main system excitation carrier signal used for backscatter terminal wireless energy collection in the fusion system. is the energy conversion coefficient of wireless energy harvesting, , is the wireless power supply window width margin, which is used to cope with the fluctuation of air interface excitation signal. Without loss of generality, The sequences are arranged from small to large, that is, ;

[0105] Step S203, dividing the backscattering cell clusters according to factors such as neighboring cell interference or service relevance, and the continuous backscattering cells with large neighboring cell interference and high service relevance are classified into the same cell cluster;

[0106] Step S204, within a service cycle, according to the backscatter terminal type under the backscatter cell coverage range in the cell cluster, respectively map and select the wireless power supply frame structure of each cell, The wireless power supply window width corresponding to the wireless power supply frame structure of each cell , that is, the first energy supply window width corresponding to the cell, where It is a community Backscatter Terminal under Coverage The mapped wireless power supply frame structure and the corresponding wireless power supply window width, that is, the second power supply window width corresponding to the terminal;

[0107] Step S205: Calculate the minimum value of the wireless power supply window width corresponding to the wireless power supply frame structure selected by each cell in the same backscatter cell cluster. ;

[0108] Step S206: In the backscatter cell cluster, The time domain overlap width of the wireless frames of the adjacent cells is used to arrange the wireless frames of the environmental backscatter system in the time domain, such as Figure 4 As shown;

[0109] Step S207: In the next service cycle, repeat the above steps S204 to S206 to dynamically adjust the time domain arrangement of the radio frames.

[0110] The above method makes full use of the power supply window of the backscatter system. In the power supply window, there will be no RF transmission in the backscatter system, that is, there is no RF interference. The interference-free time of the power supply window of this cell is used for the transmission of adjacent cells, which can improve the time domain utilization of the network.

[0111] In one embodiment, assuming that there are only three types of terminals in the environmental backscatter system, and the number of cells in the cell cluster is 3, the adaptive time domain multiplexing networking method based on the wireless power supply frame structure in the above environmental backscatter system may include the following steps:

[0112] Step S301: In the fusion system of mobile cellular network and backscattering Internet of Things, the wireless energy storage requirements of the backscattering terminal are divided into three types, which are respectively , and ;

[0113] Step S302: The wireless power supply window widths corresponding to the three types of terminals are , and ;

[0114] Step S303, dividing three consecutive reverse reflection cells covering the service area into the same cell cluster;

[0115] Step S304: In a service cycle, the type of user terminal in cell 1 is The wireless power supply window width corresponding to the wireless power supply frame used is ; The type of user terminal in cell 2 is The wireless power supply window width corresponding to the wireless power supply frame used is ; The user terminal type in cell 3 is and The wireless power supply window width corresponding to the wireless power supply frame used is ;

[0116] Step S305: Calculate the minimum value of the corresponding wireless power supply window width according to the wireless power supply frame structure selected by each cell in the same backscatter cell cluster. ;

[0117] Step S306: In the backscatter cell cluster, The time domain overlap width of the radio frames of the adjacent cells is used to arrange the time domain of the radio frames of the environmental backscatter system;

[0118] Step S307: In the next service cycle, repeat the above steps S304 to S306 to dynamically adjust the time domain arrangement of the radio frames.

[0119] At present, in the time domain multiplexing of the environmental backscatter system in cellular networking, when the time domain length of the wireless frame is fixed, the total time domain resources required for its time domain multiplexing are also fixed at three times the wireless frame length. This application utilizes the wireless power supply window of the environmental backscatter system to dynamically design the time domain overlapping width of the wireless frames of neighboring cells, thereby improving the resource utilization of the networking time domain multiplexing.

[0120] In one embodiment, Figure 6 As shown, a time domain multiplexing method is provided, which is described by taking the method applied to a base station as an example, and includes the following steps:

[0121] Step S401, determining at least one terminal type and a wireless power supply frame structure corresponding to each terminal type, and storing a correspondence between the terminal type and the wireless power supply frame structure;

[0122] Step S402, determining a backscatter cell cluster according to neighboring cell interference and / or service correlation between backscatter cells;

[0123] Step S403, obtaining a second power supply window width corresponding to the backscatter terminal according to the terminal type of the backscatter terminal in the backscatter cell, and obtaining a first power supply window width of the radio frame corresponding to the backscatter cell in the backscatter cell cluster according to the maximum value of the second power supply window widths;

[0124] Step S404, determining the time domain overlap width between the radio frames corresponding to the adjacent backscatter cells in the backscatter cell cluster according to the minimum value in the first power supply window width;

[0125] Step S405: performing time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width.

[0126] In a specific implementation, the base station may predetermine multiple terminal types and a wireless power supply frame structure corresponding to each terminal type. Different wireless power supply frame structures correspond to different wireless power supply window widths, and store the corresponding relationship between the terminal type and the wireless power supply frame structure. The base station may also divide the backscatter cells into backscatter cell clusters based on factors such as neighboring cell interference and service correlation between the backscatter cells. For each backscatter cell in the backscatter cell cluster, the terminal type of each backscatter terminal in the backscatter cell may be determined, and the wireless power supply frame structure corresponding to the terminal type may be determined based on the pre-stored corresponding relationship. According to the wireless power supply window width in the wireless power supply frame structure, a second power supply window width corresponding to the backscatter terminal is obtained, a maximum value is selected from the second power supply window width to obtain a first power supply window width corresponding to the backscatter cell, a minimum value is selected from the first power supply window width corresponding to each backscatter cell, and a time domain overlap width between wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster is obtained, and time domain multiplexing is performed on the backscatter cells in the backscatter cell cluster based on the time domain overlap width.

[0127] The above-mentioned time domain multiplexing method determines the first power supply window width of the wireless frame corresponding to the backscatter cell in the backscatter cell cluster, determines the time domain overlap width between the wireless frames corresponding to adjacent backscatter cells according to the first power supply window width, and performs time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width; the wireless frames corresponding to adjacent backscatter cells in the backscatter cell cluster can be overlapped in the time domain, so that the signal transmission of the adjacent cell is carried out within the power supply window of one cell, thereby improving the time domain resource utilization rate of the environmental backscatter system.

[0128] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0129] Based on the same inventive concept, the embodiment of the present application also provides a time domain multiplexing device for implementing the time domain multiplexing method involved above. The implementation solution provided by the device to solve the problem is similar to the implementation solution recorded in the above method, so the specific limitations in one or more time domain multiplexing device embodiments provided below can refer to the limitations of the time domain multiplexing method above, and will not be repeated here.

[0130] In an exemplary embodiment, Figure 7 As shown, a time domain multiplexing device is provided, including: an energy supply window module 502, an overlap width module 504 and a time domain multiplexing module 506, wherein:

[0131] A power supply window module 502, configured to determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster;

[0132] The overlapping width module 504 is used to determine the time domain overlapping width between the radio frames corresponding to the adjacent backscatter cells according to the first energy supply window width;

[0133] The time domain multiplexing module 506 is configured to perform time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width.

[0134] In an exemplary embodiment, the power supply window module 502 is also used to determine the terminal type of the backscatter terminal in the backscatter cell; determine the wireless power supply frame structure corresponding to the terminal type according to a pre-stored correspondence; obtain the second power supply window width corresponding to the backscatter terminal according to the wireless power supply frame structure; and obtain the first power supply window width of the wireless frame corresponding to the backscatter cell according to the maximum value of the second power supply window widths.

[0135] In an exemplary embodiment, the above-mentioned time domain multiplexing device also includes a relationship mapping module, which is used to determine at least one terminal type and determine the wireless power supply frame structure corresponding to each of the terminal types; the wireless power supply frame structure includes the second power supply window width; and store the correspondence between the terminal type and the wireless power supply frame structure.

[0136] In an exemplary embodiment, the above-mentioned relationship mapping module is also used to obtain the wireless energy storage demand of the backscatter terminal corresponding to the terminal type, and the received signal strength of the backscatter terminal corresponding to the terminal type for wireless energy collection; determine the third energy supply window width according to the wireless energy storage demand and the received signal strength; obtain the second energy supply window width according to the third energy supply window width and a pre-set window width margin; obtain the wireless energy supply frame structure corresponding to the terminal type according to the second energy supply window width.

[0137] In an exemplary embodiment, the overlap width module 504 is further configured to obtain the time domain overlap width according to a minimum value of the first energy supply window widths.

[0138] In an exemplary embodiment, the above-mentioned time domain multiplexing module 506 is also used to overlap the wireless frames corresponding to the adjacent backscatter cells in the time domain according to the time domain overlap width; and perform time domain multiplexing on the backscatter cells within the backscatter cell cluster according to the wireless frames after the overlap processing.

[0139] In an exemplary embodiment, the above-mentioned time domain multiplexing device further includes a clustering module, which is used to determine the backscatter cell cluster according to neighboring cell interference and / or service correlation between backscatter cells.

[0140] Each module in the above-mentioned time domain multiplexing device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the communication device in the form of hardware, or can be stored in the memory in the communication device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0141] In an exemplary embodiment, a communication device is provided. The communication device may be a server, and its internal structure diagram may be as shown in FIG. Figure 8As shown. The communication device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the communication device is used to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the communication device is used to store time domain multiplexing data. The input / output interface of the communication device is used to exchange information between the processor and an external device. The communication interface of the communication device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a time domain multiplexing method is implemented.

[0142] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the communication device to which the scheme of the present application is applied. The specific communication device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0143] In one embodiment, a communication device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0144] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0145] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0146] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0147] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0148] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0149] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A time domain multiplexing method, characterized in that: The method comprises: Determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster; Determining, according to the first energy supply window width, a time domain overlap width between radio frames corresponding to adjacent backscatter cells; The backscatter cells in the backscatter cell cluster are time-domain multiplexed according to the time-domain overlap width.

2. The method according to claim 1, characterized in that The determining of a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster includes: Determining a terminal type of a backscatter terminal in the backscatter cell; Determine the wireless power supply frame structure corresponding to the terminal type according to the pre-stored corresponding relationship; According to the wireless power supply frame structure, obtaining a second power supply window width corresponding to the backscatter terminal; According to the maximum value of the second power supply window widths, the first power supply window width of the radio frame corresponding to the backscatter cell is obtained.

3. The method according to claim 2, characterized in that The method further comprises: Determine at least one terminal type, and determine a wireless power supply frame structure corresponding to each terminal type; the wireless power supply frame structure includes the second power supply window width; The correspondence between the terminal type and the wireless power supply frame structure is stored.

4. The method according to claim 3, characterized in that The determining of the wireless power supply frame structure corresponding to each terminal type includes: Acquire the wireless energy storage requirement of the backscatter terminal corresponding to the terminal type, and the received signal strength of the backscatter terminal corresponding to the terminal type for wireless energy collection; Determining a third energy supply window width according to the wireless energy storage demand and the received signal strength; Obtaining the second energy supply window width according to the third energy supply window width and a preset window width margin; The wireless power supply frame structure corresponding to the terminal type is obtained according to the second power supply window width.

5. The method according to claim 1, characterized in that The determining, according to the first energy supply window width, a time domain overlap width between radio frames corresponding to adjacent backscatter cells comprises: The time domain overlap width is obtained according to the minimum value of the first energy supply window widths.

6. The method according to claim 1, characterized in that The performing time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width includes: According to the time domain overlap width, overlapping processing is performed on the wireless frames corresponding to the adjacent backscatter cells in the time domain; According to the wireless frames after the overlapping process, the backscatter cells in the backscatter cell cluster are time-domain multiplexed.

7. The method according to claim 1, characterized in that The method further comprises: The backscatter cell cluster is determined according to neighboring cell interference and / or service correlation between backscatter cells.

8. A time domain multiplexing device, characterized in that: The device comprises: A power supply window module, used to determine a first power supply window width of a radio frame corresponding to a backscatter cell in a backscatter cell cluster; An overlapping width module, used to determine the time domain overlapping width between the wireless frames corresponding to the adjacent backscatter cells according to the first energy supply window width; A time domain multiplexing module is used to perform time domain multiplexing on the backscatter cells in the backscatter cell cluster according to the time domain overlap width.

9. A communication device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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