Wireless communication method, device, system, equipment and storage medium

Abstract

The present application provides a wireless communication method, apparatus, system, device and storage medium, the method comprising: sending a downlink data signal based on a calibration beam through a signal access point, and sending resource unit allocation information to a multi-stream converter through the signal access point, wherein the calibration beam is a calibrated beam between the signal access point and the multi-stream converter; demodulating the downlink data signal based on the resource unit allocation information through the multi-stream converter to obtain signal data pointing to each access device; based on the signal data pointing to each access device and the beam direction weight corresponding to each access device, sending a multi-stream signal pointing to multiple access devices through the multi-stream converter, wherein the beam direction weight is determined based on the calibrated beam direction between the multi-stream converter and each access device. The present application realizes multi-stream signal concurrency between access points and access devices, expands the scope of application of wireless communication, and improves application flexibility.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a wireless communication method, apparatus, system, device and storage medium. Background Art

[0002] As the whole society enters the era of intelligence, wireless interconnection has become the foundation of the entire information society. WiFi, as one of the most important wireless communication technologies, has been widely used. The high-speed and large-bandwidth WiFi6 (802.11ax) standard has gradually become the mainstream WiFi product in the future. The key technology added by WiFi6, MU-MIMO (Multi-User Multiple-Input Multiple-Output), makes full use of the different spatial distribution locations of different user devices (Stations, referred to as STAs), to achieve multi-user uplink and downlink data concurrency.

[0003] However, this technology has difficulties in indoor applications. For example, if a WiFi access point (AP) and multiple STAs are located in different rooms, it is difficult to form spatial multi-streams from AP to STAs due to the separation of walls. WiFi networks are mainly used in various indoor environments, so this problem will limit the application and implementation of WiFi6 MU-MIMO technology.

[0004] Traditional WiFi cross-room coverage solutions such as WiFi relay and WiFi mesh (wireless mesh network) all demodulate and decode the received data packets, and parse the data at the MAC layer before forwarding them, so there is a large delay. At the same time, these devices use omnidirectional antennas for transmission and do not support MU-MIMO multi-stream transmission and reception, which has the disadvantages of small signal coverage and low rate. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a wireless communication method, apparatus, system, device and storage medium, which can realize multi-stream signal concurrency between an access point and an access device when the access point and the access device are located in different spaces, expand the scope of application of wireless communication and improve application flexibility.

[0006] A first aspect of an embodiment of the present application provides a wireless communication method, which is applied to a wireless communication system, wherein the wireless communication system includes: a signal access point, a multi-stream converter and multiple access devices; the method includes: sending a downlink data signal based on a calibration beam through the signal access point, and sending resource unit allocation information to the multi-stream converter through the signal access point, wherein the calibration beam is a calibrated beam between the signal access point and the multi-stream converter; demodulating the downlink data signal based on the resource unit allocation information through the multi-stream converter to obtain signal data pointing to each of the access devices; based on the signal data pointing to each of the access devices and the beam direction weight corresponding to each of the access devices, sending a multi-stream signal pointing to the multiple access devices through the multi-stream converter, wherein the beam direction weight is determined based on the calibrated beam direction between the multi-stream converter and each of the access devices.

[0007] In one embodiment, before sending the downlink data signal based on the calibration beam through the signal access point, it also includes: when a beam calibration instruction is detected, a wide beam scan is performed on the signal access point and the multi-stream converter, and based on the wide beam scan result, a narrow beam scan is performed on the signal access point and the multi-stream converter to obtain the calibration beam between the signal access point and the multi-stream converter.

[0008] In one embodiment, before sending the downlink data signal based on the calibration beam through the signal access point, it also includes: when a beam calibration instruction is detected, initiating multiple different beam scans to the multiple access devices through the signal access point, and based on the compressed beam feedback information reported by the multiple access devices, determining the calibrated beam direction weight between the multi-stream converter and each of the access devices.

[0009] In one embodiment, the signal access point initiates multiple different beam scans to the multiple access devices, and determines the calibrated beam direction weights between the multi-stream converter and each of the access devices based on the compressed beam feedback information reported by the multiple access devices, including: sending the resource unit allocation message to the multi-stream converter, and receiving the number of wide beams returned by the multi-stream converter; instructing the multi-stream converter to send multiple wide beams, and sending signal measurement instructions to the multiple access devices; sending detection data frames to the multiple access devices, the detection data frames are used to instruct the multiple access devices to detect the received signal strength; sending trigger frames to the multiple access devices, the trigger frames are used to instruct the multiple access devices to report the detected signal strength; receiving the first compressed beam feedback information reported by each of the access devices, the first compressed beam feedback information carries the first signal strength set of the multiple wide beams detected by each of the access devices; for each of the access devices, respectively select the target wide beam corresponding to the maximum value in the first signal strength set to form an optimal wide beam set.

[0010] In one embodiment, the method of initiating multiple different beam scans to the multiple access devices through the signal access point, and determining the calibrated beam direction weight between the multi-stream converter and each of the access devices based on the compressed beam feedback information reported by the multiple access devices, also includes: instructing the multi-stream converter to divide the target wide beam in the optimal wide beam set into multiple narrow beams, instructing the multi-stream converter to send the multiple narrow beams, and sending signal measurement instructions to the multiple access devices; sending the detection data frame to the multiple access devices, and sending the trigger frame to the multiple access devices; receiving the second compressed beam feedback information reported by each of the access devices, the second compressed beam feedback information carrying the second signal strength set of the multiple narrow beams detected by each of the access devices; for each of the access devices, selecting the target narrow beam corresponding to the maximum value in the second signal strength set, and using the target narrow beam as the calibrated beam direction weight between the multi-stream converter and the corresponding access device.

[0011] In one embodiment, it also includes: receiving uplink data signals from the multiple access devices through the multi-stream converter, and demodulating the uplink data signals based on the resource unit allocation information through the multi-stream converter to obtain signal data from each of the access devices; organizing the signal data from each of the access devices into uplink data frames through the multi-stream converter, and forwarding the uplink data frames to the signal access point according to the calibration beam.

[0012] In one embodiment, it also includes: sending a beam detection signal to the multi-stream converter through the signal access point; forwarding the beam detection signal to the multiple access devices through the multi-stream converter based on the beam direction weight corresponding to each of the access devices; when there is a target access device among the multiple access devices whose reported signal strength is less than the warning threshold, re-performing the beam calibration process for the wireless communication system, and transmitting the signal wave according to the recalibrated beam information.

[0013] In one embodiment, it also includes: when the multiple access devices connected to the signal access point change, executing a beam calibration process between the multi-stream converter and the changed access device, updating the beam direction weight between the multi-stream converter and the changed access device, and transmitting the signal wave according to the updated beam direction weight.

[0014] According to a second aspect of an embodiment of the present application, there is provided a wireless communication device, which is applied to a wireless communication system, wherein the wireless communication system comprises: a signal access point, a multi-stream converter and a plurality of access devices; the device comprises: a sending module, which is used to send a downlink data signal based on a calibration beam through the signal access point, and send resource unit allocation information to the multi-stream converter through the signal access point, wherein the calibration beam is a calibrated beam between the signal access point and the multi-stream converter; a demodulation module, which is used to demodulate the downlink data signal based on the resource unit allocation information through the multi-stream converter to obtain signal data pointing to each of the access devices; a first forwarding module, which is used to send a multi-stream signal pointing to the plurality of access devices through the multi-stream converter based on the signal data pointing to each of the access devices and a beam direction weight corresponding to each of the access devices, wherein the beam direction weight is determined based on the calibrated beam direction between the multi-stream converter and each of the access devices.

[0015] In one embodiment, it also includes: a first calibration module, which is used to perform a wide beam scan on the signal access point and the multi-stream converter when a beam calibration instruction is detected before the downlink data signal is sent through the signal access point based on the calibration beam, and based on the wide beam scanning result, perform a narrow beam scan on the signal access point and the multi-stream converter to obtain the calibration beam between the signal access point and the multi-stream converter.

[0016] In one embodiment, it also includes: a second calibration module, which is used to initiate multiple different beam scans to the multiple access devices through the signal access point when a beam calibration instruction is detected before the downlink data signal is sent based on the calibration beam through the signal access point, and determine the calibrated beam direction weight between the multi-stream converter and each of the access devices based on the compressed beam feedback information reported by the multiple access devices.

[0017] In one embodiment, the second calibration module is used to: send the resource unit allocation message to the multi-stream converter, and receive the number of wide beams returned by the multi-stream converter; instruct the multi-stream converter to send multiple wide beams, and send signal measurement instructions to the multiple access devices; send detection data frames to the multiple access devices, and the detection data frames are used to instruct the multiple access devices to detect the received signal strength; send trigger frames to the multiple access devices, and the trigger frames are used to instruct the multiple access devices to report the detected signal strength; receive the first compressed beam feedback information reported by each of the access devices, and the first compressed beam feedback information carries the first signal strength set of the multiple wide beams detected by each of the access devices; for each of the access devices, select the target wide beam corresponding to the maximum value in the first signal strength set to form an optimal wide beam set.

[0018] In one embodiment, the second calibration module is also used to: instruct the multi-stream converter to divide the target wide beam in the optimal wide beam set into multiple narrow beams, instruct the multi-stream converter to send the multiple narrow beams, and send signal measurement instructions to the multiple access devices; send the detection data frame to the multiple access devices, and send the trigger frame to the multiple access devices; receive the second compressed beam feedback information reported by each of the access devices, the second compressed beam feedback information carries the second signal strength set of the multiple narrow beams detected by each of the access devices; for each of the access devices, select the target narrow beam corresponding to the maximum value in the second signal strength set, and use the target narrow beam as the calibrated beam direction weight between the multi-stream converter and the corresponding access device.

[0019] In one embodiment, it also includes: a receiving module, used to receive uplink data signals from the multiple access devices through the multi-stream converter, and demodulate the uplink data signals based on the resource unit allocation information through the multi-stream converter to obtain signal data from each of the access devices; a second forwarding module, used to compose the signal data from each of the access devices into uplink data frames through the multi-stream converter, and forward the uplink data frames to the signal access point according to the calibration beam.

[0020] In one embodiment, it also includes: a detection module, which is used to send a beam detection signal to the multi-stream converter through the signal access point; a third forwarding module, which is used to forward the beam detection signal to the multiple access devices through the multi-stream converter based on the beam direction weight corresponding to each of the access devices; and a first recalibration module, which is used to re-execute the beam calibration process on the wireless communication system when there is a target access device among the multiple access devices whose reported signal strength is less than the warning threshold, and transmit the signal wave according to the recalibrated beam information.

[0021] In one embodiment, it also includes: a second recalibration module, which is used to perform a beam calibration process between the multi-stream converter and the changed access device when the multiple access devices connected to the signal access point change, update the beam direction weight between the multi-stream converter and the changed access device, and transmit the signal wave according to the updated beam direction weight.

[0022] A third aspect of an embodiment of the present application provides a wireless communication system, comprising: a signal access point, for accessing a network signal; a multi-stream converter, connected to the signal access point, for demodulating and forwarding a downlink data signal from the signal access point; an access device, for accessing the network through the signal wave of the signal access point; wherein the multi-stream converter is further used to send a multi-stream signal directed to the multiple access devices based on a demodulation result and resource unit allocation information; and the signal access point is further used to adjust a beam direction weight between the multi-stream converter and each of the access devices according to a received signal measurement result.

[0023] A fourth aspect of an embodiment of the present application provides an electronic device, comprising: a memory for storing a computer program; and a processor for executing the method of the first aspect of an embodiment of the present application and any one of its embodiments.

[0024] The fifth aspect of the embodiments of the present application provides a non-transitory electronic device readable storage medium, including: a program, which, when run by an electronic device, enables the electronic device to execute the method of the first aspect of the embodiments of the present application and any one of its embodiments.

[0025] The wireless communication method, apparatus, system, device and storage medium provided in the present application first calibrate the signal access point and the multi-stream converter to obtain a calibration beam, then send a downlink data signal based on the calibration beam through the signal access point, and send resource unit allocation information to the multi-stream converter through the signal access point, and then demodulate the downlink data signal based on the resource unit allocation information through the multi-stream converter to obtain signal data pointing to each of the access devices; finally, based on the signal data pointing to each of the access devices and the beam direction weight corresponding to each of the access devices, send a multi-stream signal pointing to the multiple access devices through the multi-stream converter, thereby realizing multi-data stream concurrency of wireless communication under dynamic calibration, and improving the stability and effectiveness of wireless communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of an electronic device according to an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of a wireless communication system according to an embodiment of the present application;

[0029] Figure 3A A flowchart of a wireless communication method according to an embodiment of the present application;

[0030] Figure 3B A schematic diagram of an AP using OMC to implement MU-MIMO bidirectional transmission with STAs in an adjacent room according to an embodiment of the present application;

[0031] Figure 4A A flowchart of a wireless communication method according to an embodiment of the present application;

[0032] Figure 4B A schematic diagram of a beam measurement process according to an embodiment of the present application;

[0033] Figure 5A A flowchart of a wireless communication method according to an embodiment of the present application;

[0034] Figure 5B A schematic diagram of a beam measurement re-measurement process according to an embodiment of the present application;

[0035] Figure 6A schematic structural diagram of a wireless communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. In the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] In order to clearly describe the technical solution of this application, the technical terms involved are explained as follows:

[0038] OFDMA: Orthogonal Frequency Division Multiple Access, refers to orthogonal frequency division multiple access.

[0039] RU: Resource Unit, which is the resource unit of OFDMA.

[0040] AAU: Active Antenna Unit, active antenna processing unit.

[0041] PLC: Power Line Communication, power line communication.

[0042] MU-MIMO: Multi-User Multiple-Input Multiple-Output.

[0043] like Figure 1 As shown, this embodiment provides an electronic device 1, including: at least one processor 11 and a memory 12, Figure 1 A processor is taken as an example. The processor 11 and the memory 12 are connected via a bus 10. The memory 12 stores instructions that can be executed by the processor 11, and the instructions are executed by the processor 11 so that the electronic device 1 can execute all or part of the process of the method in the following embodiment, so as to realize multi-stream signal concurrency between the access point and the access device when the access point and the access device are located in different spaces, expand the application scope of wireless communication, and improve application flexibility.

[0044] In one embodiment, the electronic device 1 may be a gateway device with PLC function, a mobile phone, a tablet computer, a laptop computer, a desktop computer, or a large computing system composed of multiple computers.

[0045] Please see Figure 2, which is a wireless communication system of an embodiment of the present application, including: a signal access point AP, a multi-stream converter OMC and multiple access devices STA, wherein: the signal access point AP is used to access the network signal. The multi-stream converter OMC is connected to the signal access point AP, and is used to demodulate and forward the downlink data signal from the signal access point AP. The access device STA accesses the network through the signal wave of the signal access point AP. The multi-stream converter OMC is also used to send multi-stream signals directed to multiple access devices STA based on the demodulation result and resource unit allocation information. The signal access point AP is also used to adjust the beam direction weight between the multi-stream converter OMC and each access device STA according to the received signal measurement result.

[0046] Taking a wireless communication system based on WiFi as an example, the signal access point can be a WiFi signal access point (AccessPoint, referred to as AP), and the multi-stream converter can be a WiFi OFDMA MIMO converter (WiFi OFDMA MIMOConverter, hereinafter referred to as OMC). The WiFi AP provides wireless access to the Internet service for the access device (Station, referred to as STA). One WiFi AP can be connected to multiple access devices STAs, such as Figure 2 Access devices STA1, STA2...STAm in the.

[0047] WiFi AP may include: WiFi gateway (WiFi Gate) and PLC host device (PLC Host).

[0048] The multi-stream converter OMC may include: a main control unit (MCU), a physical layer processing unit (PPU), an array antenna unit (AAU) and a PLC client module (PLCClient). The PLC Host of the access point AP and the PLC Client of the multi-stream converter OMC can build a communication link through the power line to realize the message interaction between AP and OMC. The multi-stream converter OMC can realize the conversion between the OFDMA data packets sent and received by the access point AP and the MU-MIMO multi-streams sent and received by the access device STAs.

[0049] In actual scenarios, the access point AP and multiple user equipment STAs are often located in different rooms. The communication between them is likely to be blocked by the walls or other obstacles in the room, and it is impossible to directly build MU-MIMO spatial multi-stream (such as Figure 2 dotted line mark).

[0050] This application arranges OMC devices in the corridor of the room (or other locations to avoid obstacles), and the OFDMA data frames sent by the access point AP to the access devices STAs are processed by the converter OMC into MU-MIMO spatial multi-streams, and then forwarded to each access device STAs, thereby realizing multi-stream concurrency (DL-MIMO) of multiple user devices in the downlink direction. In the uplink direction, the multi-stream data from the access devices STAs at different locations are converged at the multi-stream converter OMC, merged into OFDMA data frames, and then forwarded to the access point AP, thereby realizing multi-stream concurrency (UL-MIMO) of multiple user devices in the uplink direction.

[0051] The wireless communication method of the embodiment of the present application is further described in detail below with reference to the illustrations.

[0052] Please see Figure 3A , which is a wireless communication method according to an embodiment of the present application, the method may be Figure 1 The electronic device 1 shown in the figure can be used to perform Figure 2 In the wireless communication system shown, when the access point AP and the access device STAs are located in different spaces, multi-stream signal concurrency between the access point AP and the access device STAs is achieved, thereby expanding the application scope of wireless communication and improving application flexibility. The method includes the following steps:

[0053] Step 301: Send a downlink data signal based on a calibration beam through a signal access point AP, and send resource unit allocation information to a multi-stream converter OMC through the signal access point AP.

[0054] In this step, the calibration beam is the calibrated beam between the signal access point AP and the multi-stream converter OMC. For the scenario where the access point AP and the access devices STAs are in different spaces, such as in different rooms, the multi-stream converter OMC is installed in the aisle of the room, and the signal access point AP controls the multi-stream converter OMC using the power line carrier (PLC) network. After completing the calibration from the signal access point AP to the multi-stream converter OMC, for the downlink data signal, the signal access point AP sends the downlink OFDMA frame (ie, DL OFDMA) carrying the data of each access device STAs according to the calibration beam. At the same time, the signal access point AP can send the "OFDMA RU allocation setting" message to the multi-stream converter OMC through the PLC network to inform the multi-stream converter OMC of the allocation of each access device STAs in the OFDMA RU.

[0055] Step 302: The downlink data signal is demodulated based on the resource unit allocation information by the multi-stream converter OMC to obtain signal data directed to each access device STAs.

[0056] In this step, after receiving the downlink OFDMA signal sent by the access point AP, the multi-stream converter OMC demodulates the downlink OFDMA signal based on the RU information occupied by each access device STAs, and can obtain the signal data pointing to each access device STAs. That is, the multi-stream converter OMC is used as a transfer station to avoid the situation where there is an obstacle area between the signal access point AP and the access device STAs, and the signal access point AP cannot directly perform multi-stream concurrency with the access device STAs.

[0057] Step 303: Based on the signal data directed to each access device STAs and the beam direction weight corresponding to each access device STAs, a multi-stream signal directed to multiple access devices STAs is sent through the multi-stream converter OMC.

[0058] In this step, the beam direction weight is determined based on the beam direction after calibration between the multi-stream converter OMC and each access device STAs. The beam direction pointing to the access device STAs can be obtained in advance through the beam calibration process. After completing the calibration between the multi-stream converter OMC and the access device STAs, the multi-stream converter OMC distributes the signal data pointing to each access device STAs demodulated in step 302 to different beam directions according to the beam direction weight corresponding to each access device STAs, and forms spatial multi-streams (Stream), which are then sent out through the array antenna to realize downlink MIMO (Downlink-MIMO, DL-MIMO) for the access device STAs. In this way, even if there is an obstacle area between the signal access point AP and the access device STAs, multi-stream concurrency can be successfully completed.

[0059] In one embodiment, it is assumed that in step 302, a certain access device STA i The demodulated symbol is represented by SIG i , and its corresponding calibrated beam direction weight is expressed as W i , then the multi-stream converter OMC forwards it to the access device STA i The symbol is: W i *SIG i Assuming there are M access devices STAs in total, the total symbols sent by OMC to each STAs are expressed as:

[0060]

[0061] OMC will sign SIG mimoMultiple beams are formed by the antenna array AAU, and each beam (Beamforming, BF) points to different access devices STAs. In this way, each access device STAs can receive downlink data frames (Downlink Physical Protocol Data Unit, referred to as DL PPDU).

[0062] Step 304: Receive uplink data signals from multiple access devices STAs through the multi-stream converter OMC, and demodulate the uplink data signals based on resource unit allocation information through the multi-stream converter OMC to obtain signal data from each access device STAs.

[0063] In this step, for the uplink direction, the uplink data frames (Uplink Physical Protocol Data Unit, UL PPDU for short) sent by each access device STAs are carried on different RUs. The multi-stream converter OMC demodulates according to the known allocation information of the access device STAs data in the OFDMA RU to obtain the signal data from each access device STAs.

[0064] Step 305: The signal data from each access device STAs is combined into an uplink data frame through the multi-stream converter OMC, and the uplink data frame is forwarded to the signal access point AP according to the calibration beam.

[0065] In this step, the multi-stream converter OMC reassembles the signal data from each access device STAs into an uplink OFDMA data frame (UL OFDMA), and sends it to the signal access point AP in the reverse direction of the calibration beam between the signal access point AP and the multi-stream converter OMC. In this way, uplink MIMO (Uplink-MIMO, referred to as UL-MIMO) can be implemented.

[0066] like Figure 3B As shown, it is a schematic diagram of a signal access point AP according to an embodiment of the present application using a multi-stream converter OMC to implement MU-MIMO bidirectional transmission with multiple access devices STAs (taking STA1, STA2, and STA3 as an example) in an adjacent room.

[0067] The above wireless communication method aims at the scenario where the signal access point AP and the access device STAs are in different rooms. By setting a multi-stream converter OMC in the aisle of the room, the multi-stream concurrency between the signal access point AP and the access device STAs is realized through the forwarding of the multi-stream converter OMC. In this way, the problem of the difficulty of implementing WiFi6 MU-MIMO technology in indoor environments can be effectively solved. Only WiFi physical symbols are processed. Compared with WiFi relay and WiFi Mesh, it has the advantages of fast processing speed and low latency, and MU-MIMO concurrency is realized, which increases the signal coverage range and improves the Internet access speed of user devices. In addition, the multi-stream converter OMC in the embodiment of the present application only requires a civilian power socket, and does not require a wired network connection. The networking is simple and flexible, which is extremely beneficial for upgrading already renovated indoor places to WiFi6 networks.

[0068] Please see Figure 4A , which is a wireless communication method according to an embodiment of the present application, the method may be Figure 1 The electronic device 1 shown in the figure can be used to perform Figure 2 In the wireless communication system shown, when the access point AP and the access device STAs are located in different spaces, multi-stream signal concurrency between the access point AP and the access device STAs is achieved, thereby expanding the application scope of wireless communication and improving application flexibility. The method includes the following steps:

[0069] Step 401: When a beam calibration instruction is detected, a wide beam scan is performed on the signal access point AP and the multi-stream converter OMC, and based on the wide beam scan result, a narrow beam scan is performed on the signal access point AP and the multi-stream converter OMC to obtain a calibration beam between the signal access point AP and the multi-stream converter OMC.

[0070] In this step, in order to accurately forward the multi-stream converter OMC and realize the multi-stream concurrency between the signal access point AP and the access device STAs, it is necessary to complete the two-stage beam calibration in advance: 1. Beam calibration from the signal access point AP to the multi-stream converter OMC. 2. Beam calibration from the multi-stream converter OMC to the multi-access device STAs. The beam calibration command can be triggered manually through the button on the AP, or it can be triggered by a specific event, or it can be triggered periodically. The triggering method is not limited.

[0071] First, the beam calibration process from the signal access point AP to the multi-stream converter OMC is performed:

[0072] The beam calibration in this stage can be divided into two steps: wide beam scanning and narrow beam scanning. The AP obtains the optimal wide beam direction from the AP to the OMC through wide beam scanning. Specifically, the OMC detects the signal strength of each received wide beam of the multiple wide beams emitted by the AP, and reports the signal strength detection results to the AP. The wide beam corresponding to the maximum signal strength is used as the optimal wide beam direction from the AP to the OMC. Then, a more refined narrow beam scan is further performed within the selected wide beam range. Similarly, the optimal narrow beam direction from the AP to the OMC can be obtained. The optimal narrow beam direction is determined as the calibration beam between the signal access point AP and the multi-stream converter OMC.

[0073] During the above scanning process, each time the AP configures a wide beam direction, it will send a message to the OMC through the PLC network to notify the OMC to measure the signal strength sent by the AP. After the OMC completes the measurement, it reports the result to the AP. The AP selects the beam corresponding to the maximum signal strength as the optimal beam based on the collected signal strengths of each beam.

[0074] Step 402: Initiate multiple different beam scans to multiple access devices STAs through the signal access point AP, and determine the calibrated beam direction weight between the multi-stream converter OMC and each access device STAs based on the compressed beam feedback information reported by the multiple access devices STAs.

[0075] In this step, after completing the beam calibration from AP to OMC, you can start the beam calibration from OMC to each STA. AP initiates scanning of different beams, and after setting the corresponding beam, OMC finds the beam direction used by each STA by receiving the compressed beamforming feedback (CBF) reported by each STA.

[0076] In one embodiment, step 402 may specifically include: sending a resource unit allocation message to the multi-stream converter OMC, and receiving the number of wide beams returned by the multi-stream converter OMC. Instructing the multi-stream converter OMC to send multiple wide beams, and sending signal measurement instructions to multiple access devices STAs. Sending detection data frames to multiple access devices STAs, the detection data frames are used to instruct multiple access devices STAs to detect the received signal strength. Sending trigger frames to multiple access devices STAs, the trigger frames are used to instruct multiple access devices STAs to report the detected signal strength. Receive the first compressed beam feedback information reported by each access device STAs, the first compressed beam feedback information carries the first signal strength set of multiple wide beams detected by each access device STAs. For each access device STAs, select the target wide beam corresponding to the maximum value in the first signal strength set to form the best wide beam set.

[0077] In this step, the beam calibration process from OMC to each STA can also be divided into two steps: wide beam scanning and narrow beam scanning. First, wide beam scanning is performed, combined with Figure 4B , taking three access devices STA1, STA2, and STA3 as an example, the specific process is as follows:

[0078] Step 1: The AP sends an "OFDMA RU allocation setup" message to the OMC through the PLC network. The message contains the allocation of RUs to each STA on the OFDMA data frame. The OMC sets the number of wide beams to be scanned n and the wide beam sequence {wb0, wb1, wb2, …, wb n-1}, and then feeds back the number n of wide beams that the AP needs to scan.

[0079] Step 2: The AP initiates n wide beam measurements (n is an integer). Before each wide beam measurement, the AP sends a message to the OMC through the PLC network to notify it to enter the beam measurement time slice. Figure 4B As shown in the figure, taking the i-th wide beam measurement as an example, the AP sends the “i-th wide beam measurement” message to the OMC, and the OMC sets the beam to the STAs as wb i . Then the AP sends a "Null Data Packet Announcement" (NDPA) to notify each STA to perform beam measurement, and then sends a "Null Data Packet" (NDP) as a sounding frame for each STA to measure. Finally, the AP sends a trigger frame (TF) to notify each STA to report the measurement results. Each STA reports the received signal strength in CBF through OFDMA multiplexing. OMC receives the CBF reported by each STA and completes the wb i Beam measurement. After completing all n wide beam measurements, the target wide beam corresponding to the maximum value in the first signal strength set is used as the optimal wide beam of the corresponding STAs. In this way, OMC obtains the optimal wide beam for each STA. Suppose the optimal wide beam set of M STAs contains m beams (since different STAs have the same optimal wide beam, m is less than or equal to M, and M is an integer).

[0080] In one embodiment, step 402 may specifically include: initiating multiple different beam scans to multiple access devices STAs through a signal access point AP, and determining the calibrated beam direction weight between the multi-stream converter OMC and each access device STAs based on the compressed beam feedback information reported by the multiple access devices STAs, and also includes: instructing the multi-stream converter OMC to divide the target wide beam in the best wide beam set into multiple narrow beams, instructing the multi-stream converter OMC to send multiple narrow beams, and sending signal measurement instructions to multiple access devices STAs. Sending detection data frames to multiple access devices STAs, and sending trigger frames to multiple access devices STAs. Receiving the second compressed beam feedback information reported by each access device STAs, the second compressed beam feedback information carries the second signal strength set of multiple narrow beams detected by each access device STAs. For each access device STAs, respectively select the target narrow beam corresponding to the maximum value in the second signal strength set, and use the target narrow beam as the calibrated beam direction weight between the multi-stream converter OMC and the corresponding access device STAs.

[0081] In this step, after the wide beam scanning from OMC to each STAs is completed, the narrow beam scanning from OMC to each STAs is performed. Figure 4B As shown in the figure, OMC further divides the m wide beams obtained in step 2 into k narrow beams, represented by {nb0,nb1,nb2,…,nb k-1 Then, the AP sends a "enter narrow beam measurement" message to the AP through the PLC network. The message contains the number of narrow beams to be scanned, k. The AP then initiates k narrow beam measurements. The narrow beam process is similar to step 2. Taking the j-th narrow beam measurement as an example, the AP sends a "j-th narrow beam measurement" message to the OMC, and the OMC sets the beam to the STAs to nb. j The AP then sends a useless data announcement frame NDPA to notify each STA to perform beam measurement, and then sends a useless data frame NDP as a sounding frame for each STA to measure. Finally, the AP sends a trigger frame TF to notify each STA to report the measurement results. Each STA reports the received signal strength in CBF through OFDMA multiplexing. OMC receives the CBF reported by each STA and completes nb j Beam measurement. After completing all k narrow beam measurements, the OMC uses the target narrow beam corresponding to the maximum value in the second signal strength set as the optimal wide and narrow beam of the corresponding STAs. In this way, the OMC obtains the optimal narrow beam for each STAs and uses the optimal narrow beam as the beam direction weight after calibration between the multi-stream converter OMC and the corresponding access device STAs.

[0082] Step 403: Send a downlink data signal based on the calibration beam through the signal access point AP, and send resource unit allocation information to the multi-stream converter OMC through the signal access point AP. For details, refer to the description of step 301 in the above embodiment.

[0083] Step 404: The multi-stream converter OMC demodulates the downlink data signal based on the resource unit allocation information to obtain signal data directed to each access device STAs. For details, refer to the description of step 302 in the above embodiment.

[0084] Step 405: Based on the signal data directed to each access device STAs and the beam direction weight corresponding to each access device STAs, a multi-stream signal directed to multiple access devices STAs is sent through the multi-stream converter OMC. For details, refer to the description of step 303 in the above embodiment.

[0085] Step 406: Receive uplink data signals from multiple access devices STAs through the multi-stream converter OMC, and demodulate the uplink data signals based on the resource unit allocation information through the multi-stream converter OMC to obtain signal data from each access device STAs. For details, refer to the description of step 304 in the above embodiment.

[0086] Step 407: The signal data from each access device STAs is combined into an uplink data frame through the multi-stream converter OMC, and the uplink data frame is forwarded to the signal access point AP according to the calibration beam. For details, refer to the description of step 305 in the above embodiment.

[0087] In actual usage scenarios, the user equipment connected to the AP may also change, such as adding new access devices STAs or disconnecting the original connection. In these cases, the beam recalibration adjustment process may also be triggered. Therefore, the method may further include the following steps:

[0088] Step 408: When a change occurs to a plurality of access devices STAs connected to a signal access point AP, a beam calibration process is performed between the multi-stream converter OMC and the changed access devices STAs, the beam direction weights between the multi-stream converter OMC and the changed access devices STAs are updated, and signal waves are transmitted according to the updated beam direction weights.

[0089] In this step, it is assumed that the AP is connected to N user devices {STA0, STA1, ..., STA N-1}. When a new device STA X Access AP, AP sends a message to OMC through PLC network, the message contains STA X The information of allocating RUs on the OFDMA frame is fed back to the AP by the OMC to allocate STAs XThe number of wide beams to scan.

[0090] The AP then initiates a wide beam measurement, which is similar to step 402 of the OMC to STAs beam calibration. The only difference is that after the wide beam measurement is completed, only STA needs to be selected. X Then the best wide beam is scanned by narrow beam, and the process is similar to step 403 of OMC to STAs beam calibration. Finally, STA is determined X The beam direction weight.

[0091] In the subsequent data transmission and reception process between AP and each STAs, OMC sends the symbol SIG in the original multi-stream transmission. mimo Superimpose STA X The sending symbol of , that is, the updated sending symbol is expressed as:

[0092] SIGX mimo =SIG mimo +W X *SIG x

[0093] Among them, SIG X The AP sends the data to the STA. X The symbol, W X For STA X The beam direction weights to use.

[0094] In one embodiment, when an existing STA disconnects from the AP, the AP sends a message to notify the OMC, which includes the message to remove the RU used by the STA in OFDMA. mimo The symbols on the RU are not superimposed, so that the OMC no longer generates a beam facing the disconnected device.

[0095] The wireless communication method can dynamically adjust the wireless communication system through the calibration process, so that the multi-stream concurrent engineering of the wireless communication system can be applied to different environments and improve the stability of network communication. The beam calibration of new devices and the update of MIMO beams can be implemented for the access and disconnection of new user devices, and the beams of disconnected devices can be removed.

[0096] Please see Figure 5A , which is a wireless communication method according to an embodiment of the present application, the method may be Figure 1 The electronic device 1 shown in the figure can be used to perform Figure 2 In the wireless communication system shown, when the access point AP and the access device STAs are located in different spaces, multi-stream signal concurrency between the access point AP and the access device STAs is achieved, thereby expanding the application scope of wireless communication and improving application flexibility. The method includes the following steps:

[0097] Step 501: When a beam calibration instruction is detected, a wide beam scan is performed on the signal access point AP and the multi-stream converter OMC, and based on the wide beam scan result, a narrow beam scan is performed on the signal access point AP and the multi-stream converter OMC to obtain a calibration beam between the signal access point AP and the multi-stream converter OMC. For details, refer to the description of step 401 in the above embodiment.

[0098] Step 502: When a beam calibration instruction is detected, multiple different beam scans are initiated to multiple access devices STAs through the signal access point AP, and based on the compressed beam feedback information reported by the multiple access devices STAs, the calibrated beam direction weight between the multi-stream converter OMC and each access device STAs is determined. For details, refer to the description of step 402 in the above embodiment.

[0099] Step 503: Send a downlink data signal based on the calibration beam through the signal access point AP, and send resource unit allocation information to the multi-stream converter OMC through the signal access point AP. For details, refer to the description of step 301 in the above embodiment.

[0100] Step 504: The multi-stream converter OMC demodulates the downlink data signal based on the resource unit allocation information to obtain signal data directed to each access device STAs. For details, refer to the description of step 302 in the above embodiment.

[0101] Step 505: Based on the signal data directed to each access device STAs and the beam direction weight corresponding to each access device STAs, a multi-stream signal directed to multiple access devices STAs is sent through the multi-stream converter OMC. For details, refer to the description of step 303 in the above embodiment.

[0102] Step 506: Receive uplink data signals from multiple access devices STAs through the multi-stream converter OMC, and demodulate the uplink data signals based on the resource unit allocation information through the multi-stream converter OMC to obtain signal data from each access device STAs. For details, refer to the description of step 304 in the above embodiment.

[0103] Step 507: The signal data from each access device STAs is combined into an uplink data frame through the multi-stream converter OMC, and the uplink data frame is forwarded to the signal access point AP according to the calibration beam. For details, refer to the description of step 305 in the above embodiment.

[0104] In actual usage scenarios, the user's living environment may change dynamically, and the indoor coverage of WiFi may change due to the increase or decrease of indoor objects or the movement of their positions. Therefore, real-time monitoring can be performed through the AP, and the beam calibration process can be restarted for the above situation. Therefore, the method may also include:

[0105] Step 508: Send a beam detection signal to the multi-stream converter OMC through the signal access point AP.

[0106] In this step, for example, due to changes in indoor objects or movement of customer devices, the performance of the MU-MIMO multi-stream originally used by the OMC may deteriorate, and the beam direction needs to be recalibrated. The AP can start the beam measurement process from time to time to check the current beam status. For example, the AP can send a "use beam measurement" message to the OMC through the PLC network.

[0107] Step 509: forwarding the beam detection signal to multiple access devices STAs through the multi-stream converter OMC based on the beam direction weight corresponding to each access device STAs.

[0108] In this step, the process of calibrating the beam from OMC to STAs in step 402 is similar to the single beam measurement, except that OMC forwards the received AP downlink data to each STA using MU-MIMO multi-beam instead of single beam forwarding, such as Figure 5B As shown, three access devices STA1, STA2, and STA3 are taken as an example. Assume that the transmitted symbol of the beam detection signal is SIG sd , the calibrated beam direction weight corresponding to each STAs is expressed as W i , then the symbols sent by the MU-MIMO mode of the multi-stream converter OMC are:

[0109]

[0110] OMC receives the CBF reported by each STA and completes the measurement of the currently used beam, thereby evaluating whether the current MU-MIMO spatial multi-stream is appropriate.

[0111] Step 510: When there are target access devices STAs among the multiple access devices STAs whose reported signal strength is less than the warning threshold, re-perform the beam calibration process on the wireless communication system, and transmit signal waves according to the re-calibrated beam information.

[0112] In this step, when there is a target access device among multiple access devices STAs whose reported signal strength is less than the warning threshold, for example, OMC detects that a certain access device STA i The reported signal strength is less than the warning threshold, indicating that the STA iIf the beam quality is lower than the threshold, STA will be started. i Specifically, OMC selects a wide beam sequence for scanning, and the scanning order is: first select the coverage STA i The original use of the beam direction of the wide beam to scan. Secondly and STA i The original wide beam scanning with a small beam direction angle difference is used. The scanning process is similar to the wide beam scanning process from OMC to STAs in step 402 above, except that only STA is selected after the wide beam measurement is completed. i Then, we can use STA i The narrow beam scanning process is similar to the narrow beam scanning process from OMC to STAs in step 402. Finally, the STA is obtained. i The new beam direction weight.

[0113] After obtaining the new beam direction weight, OMC will use STA i The latest beam direction weights are used to send multi-stream symbols SIG mimo , thereby enabling OMC to dynamically update the multi-stream spatial direction of MU-MIMO and ensure the reliable operation of the entire WiFi6 network in indoor environments.

[0114] The above wireless communication method sends a beam detection signal to the multi-stream converter OMC, instructing the multi-stream converter OMC to forward the beam detection signal to multiple access devices STAs, and determines whether there is a target access device with a received signal strength less than the warning threshold among the multiple access devices STAs based on the received signal strength reported by the access device STAs. When such a target access device exists, it means that the signal that the target access device can receive through the signal access point AP is weak. At this time, the wireless communication system can be dynamically subjected to a beam calibration process, and the beam information transmission signal wave can be recalibrated so that all access devices STAs including the target access device can have a better signal reception effect. It realizes timely adjustment of beams with poor signal quality according to monitoring results in response to changes in the indoor signal propagation environment, ensuring the reliable use of the entire WiFi6 network MU-MIMO in indoor environments.

[0115] Please see Figure 6 , which is a wireless communication device 600 of an embodiment of the present application, the device can be applied to Figure 1 The electronic device 1 shown can be applied to Figure 2In the wireless communication system shown, when the access point AP and the access device STAs are located in different spaces, multi-stream signal concurrency between the access point AP and the access device STAs is realized, thereby expanding the application scope of wireless communication and improving application flexibility. The device includes: a sending module 601, a demodulation module 602 and a first forwarding module 603, and the principle relationship of each module is as follows:

[0116] The sending module 601 is used to send a downlink data signal based on a calibration beam through a signal access point AP, and to send resource unit allocation information to the multi-stream converter OMC through the signal access point AP, wherein the calibration beam is a calibrated beam between the signal access point AP and the multi-stream converter OMC. The demodulation module 602 is used to demodulate the downlink data signal based on the resource unit allocation information through the multi-stream converter OMC to obtain signal data directed to each access device STAs. The first forwarding module 603 is used to send a multi-stream signal directed to multiple access devices STAs through the multi-stream converter OMC based on the signal data directed to each access device STAs and the beam direction weight corresponding to each access device STAs, wherein the beam direction weight is determined based on the calibrated beam direction between the multi-stream converter OMC and each access device STAs.

[0117] In one embodiment, it also includes: a first calibration module 604, which is used to perform a wide beam scan on the signal access point AP and the multi-stream converter OMC when a beam calibration instruction is detected before sending a downlink data signal based on the calibration beam through the signal access point AP, and based on the wide beam scanning result, perform a narrow beam scan on the signal access point AP and the multi-stream converter OMC to obtain a calibration beam between the signal access point AP and the multi-stream converter OMC.

[0118] In one embodiment, it also includes: a second calibration module 605, which is used to initiate multiple different beam scans to multiple access devices STAs through the signal access point AP before sending a downlink data signal based on the calibration beam through the signal access point AP, when a beam calibration instruction is detected, and determine the calibrated beam direction weight between the multi-stream converter OMC and each access device STAs based on the compressed beam feedback information reported by the multiple access devices STAs.

[0119] In one embodiment, the second calibration module 605 is used to: send a resource unit allocation message to the multi-stream converter OMC, and receive the number of wide beams returned by the multi-stream converter OMC. Instruct the multi-stream converter OMC to send multiple wide beams, and send signal measurement instructions to multiple access devices STAs. Send detection data frames to multiple access devices STAs, and the detection data frames are used to instruct multiple access devices STAs to detect the received signal strength. Send trigger frames to multiple access devices STAs, and the trigger frames are used to instruct multiple access devices STAs to report the detected signal strength. Receive the first compressed beam feedback information reported by each access device STAs, and the first compressed beam feedback information carries the first signal strength set of multiple wide beams detected by each access device STAs. For each access device STAs, select the target wide beam corresponding to the maximum value in the first signal strength set to form an optimal wide beam set.

[0120] In one embodiment, the second calibration module 605 is also used to: instruct the multi-stream converter OMC to split the target wide beam in the best wide beam set into multiple narrow beams, instruct the multi-stream converter OMC to send multiple narrow beams, and send signal measurement instructions to multiple access devices STAs. Send detection data frames to multiple access devices STAs, and send trigger frames to multiple access devices STAs. Receive the second compressed beam feedback information reported by each access device STAs, and the second compressed beam feedback information carries the second signal strength set of multiple narrow beams detected by each access device STAs. For each access device STAs, select the target narrow beam corresponding to the maximum value in the second signal strength set, and use the target narrow beam as the calibrated beam direction weight between the multi-stream converter OMC and the corresponding access device STAs.

[0121] In one embodiment, it further includes: a receiving module 606, configured to receive uplink data signals from multiple access devices STAs through the multi-stream converter OMC, and demodulate the uplink data signals through the multi-stream converter OMC based on the resource unit allocation information to obtain signal data from each access device STAs. A second forwarding module 607, configured to compose the signal data from each access device STAs into an uplink data frame through the multi-stream converter OMC, and forward the uplink data frame to the signal access point AP according to the calibration beam.

[0122] In one embodiment, it also includes: a detection module 608, which is used to send a beam detection signal to the multi-stream converter OMC through the signal access point AP. A third forwarding module 609, which is used to forward the beam detection signal to multiple access devices STAs through the multi-stream converter OMC based on the beam direction weight corresponding to each access device STAs. A first recalibration module 610, which is used to re-execute the beam calibration process for the wireless communication system when there are target access devices STAs whose reported signal strength is less than the warning threshold among the multiple access devices STAs, and transmit the signal wave according to the recalibrated beam information.

[0123] In one embodiment, it also includes: a second recalibration module 611, which is used to perform a beam calibration process between the multi-stream converter OMC and the changed access devices STAs when a change occurs to multiple access devices STAs connected to the signal access point AP, update the beam direction weights between the multi-stream converter OMC and the changed access devices STAs, and transmit signal waves according to the updated beam direction weights.

[0124] For a detailed description of the wireless communication device 600, please refer to the description of the relevant method steps in the above embodiment.

[0125] The embodiment of the present invention also provides a non-transitory electronic device 1 readable storage medium, including: a program, when it is run on the electronic device 1, the electronic device 1 can execute all or part of the process of the method in the above embodiment. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk (HDD) or a solid-state drive (SSD). The storage medium can also include a combination of the above types of memory.

[0126] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A wireless communication method, characterized in that: Applied to a wireless communication system, the wireless communication system comprises: a signal access point, a multi-stream converter and a plurality of access devices; the signal access point and the multi-stream converter form a communication link through a power line to realize message interaction between the signal access point and the multi-stream converter; the method comprises: Sending a downlink data signal based on the calibration beam through the signal access point, and sending resource unit allocation information of orthogonal frequency division multiple access to the multi-stream converter through the signal access point, wherein the calibration beam is a calibrated beam between the signal access point and the multi-stream converter; Demodulating the downlink data signal based on the resource unit allocation information through the multi-stream converter to obtain signal data directed to each of the access devices; Based on the signal data directed to each of the access devices and the beam direction weight corresponding to each of the access devices, a multi-stream signal directed to the multiple access devices is sent through the multi-stream converter, wherein the beam direction weight is determined based on the calibrated beam direction between the multi-stream converter and each of the access devices, and the beam direction weight is determined by the signal access point according to the received signal measurement result.

2. The method according to claim 1, characterized in that Before sending the downlink data signal based on the calibration beam through the signal access point, the method further includes: When a beam calibration instruction is detected, a wide beam scan is performed on the signal access point and the multi-stream converter, and based on the wide beam scan result, a narrow beam scan is performed on the signal access point and the multi-stream converter to obtain the calibration beam between the signal access point and the multi-stream converter.

3. The method according to claim 1, characterized in that Before sending the downlink data signal based on the calibration beam through the signal access point, the method further includes: When a beam calibration instruction is detected, multiple different beam scans are initiated to the multiple access devices through the signal access point, and based on the compressed beam feedback information reported by the multiple access devices, the calibrated beam direction weights between the multi-stream converter and each of the access devices are determined.

4. The method according to claim 3, characterized in that The initiating a plurality of different beam scans to the plurality of access devices through the signal access point, and determining a calibrated beam direction weight between the multi-stream converter and each of the access devices based on compressed beam feedback information reported by the plurality of access devices, comprises: sending the resource unit allocation message to the multi-stream converter, and receiving the number of wide beams returned by the multi-stream converter; instructing the multi-stream converter to send a plurality of wide beams and sending a signal measurement instruction to the plurality of access devices; Sending a detection data frame to the multiple access devices, wherein the detection data frame is used to instruct the multiple access devices to detect the received signal strength; Sending a trigger frame to the multiple access devices, the trigger frame being used to instruct the multiple access devices to report detected signal strengths; Receiving first compressed beam feedback information reported by each of the access devices, where the first compressed beam feedback information carries a first signal strength set of the multiple wide beams detected by each of the access devices; For each of the access devices, a target wide beam corresponding to the maximum value in the first signal strength set is selected to form an optimal wide beam set.

5. The method according to claim 4, characterized in that The initiating a plurality of different beam scans to the plurality of access devices through the signal access point, and determining a calibrated beam direction weight between the multi-stream converter and each of the access devices based on the compressed beam feedback information reported by the plurality of access devices, further includes: Instructing the multi-stream converter to split the target wide beam in the optimal wide beam set into a plurality of narrow beams, instructing the multi-stream converter to send the plurality of narrow beams, and sending a signal measurement instruction to the plurality of access devices; Sending the detection data frame to the multiple access devices, and sending the trigger frame to the multiple access devices; receiving second compressed beam feedback information reported by each of the access devices, wherein the second compressed beam feedback information carries a second signal strength set of the multiple narrow beams detected by each of the access devices; For each of the access devices, a target narrow beam corresponding to the maximum value in the second signal strength set is selected respectively, and the target narrow beam is used as a beam direction weight after calibration between the multi-stream converter and the corresponding access device.

6. The method according to claim 1, characterized in that Also includes: Receiving uplink data signals from the plurality of access devices through the multi-stream converter, and demodulating the uplink data signals based on the resource unit allocation information through the multi-stream converter to obtain signal data from each of the access devices; The signal data from each access device is combined into an uplink data frame through the multi-stream converter, and the uplink data frame is forwarded to the signal access point according to the calibration beam.

7. The method according to claim 1, characterized in that Also includes: sending a beam detection signal to the multi-stream converter via the signal access point; forwarding the beam detection signal to the multiple access devices through the multi-stream converter based on the beam direction weight corresponding to each of the access devices; When there is a target access device among the multiple access devices whose reported signal strength is less than the warning threshold, the beam calibration process is re-executed on the wireless communication system, and a signal wave is transmitted according to the re-calibrated beam information.

8. The method according to claim 1, characterized in that Also includes: When the multiple access devices connected to the signal access point change, a beam calibration process is performed between the multi-stream converter and the changed access device, the beam direction weight between the multi-stream converter and the changed access device is updated, and the signal wave is transmitted according to the updated beam direction weight.

9. A wireless communication device, characterized in that: Applied to a wireless communication system, the wireless communication system comprises: a signal access point, a multi-stream converter and a plurality of access devices; the signal access point and the multi-stream converter form a communication link through a power line to realize message interaction between the signal access point and the multi-stream converter; the device comprises: A sending module, configured to send a downlink data signal based on a calibration beam through the signal access point, and send resource unit allocation information of orthogonal frequency division multiple access to the multi-stream converter through the signal access point, wherein the calibration beam is a calibrated beam between the signal access point and the multi-stream converter; A demodulation module, configured to demodulate the downlink data signal based on the resource unit allocation information through the multi-stream converter to obtain signal data directed to each of the access devices; A first forwarding module is used to send a multi-stream signal directed to the multiple access devices through the multi-stream converter based on the signal data directed to each of the access devices and the beam direction weight corresponding to each of the access devices, wherein the beam direction weight is determined based on the beam direction calibrated between the multi-stream converter and each of the access devices, and the beam direction weight is determined by the signal access point according to the received signal measurement result.

10. The device according to claim 9, characterized in that Also includes: The first calibration module is used to perform a wide beam scan on the signal access point and the multi-stream converter when a beam calibration instruction is detected before the downlink data signal is sent based on the calibration beam through the signal access point, and based on the wide beam scanning result, perform a narrow beam scan on the signal access point and the multi-stream converter to obtain the calibration beam between the signal access point and the multi-stream converter.

11. The device according to claim 9, characterized in that Also includes: A second calibration module is used to initiate multiple different beam scans to the multiple access devices through the signal access point when a beam calibration instruction is detected before the downlink data signal is sent based on the calibration beam through the signal access point, and determine the calibrated beam direction weight between the multi-stream converter and each of the access devices based on the compressed beam feedback information reported by the multiple access devices.

12. The device according to claim 9, characterized in that Also includes: A receiving module, configured to receive uplink data signals from the plurality of access devices through the multi-stream converter, and demodulate the uplink data signals based on the resource unit allocation information through the multi-stream converter to obtain signal data from each of the access devices; The second forwarding module is used to combine the signal data from each access device into an uplink data frame through the multi-stream converter, and forward the uplink data frame to the signal access point according to the calibration beam.

13. The device according to claim 9, characterized in that Also includes: A detection module, used for sending a beam detection signal to the multi-stream converter through the signal access point; A third forwarding module, configured to forward the beam detection signal to the multiple access devices through the multi-stream converter based on the beam direction weight corresponding to each of the access devices; The first recalibration module is used to re-perform the beam calibration process on the wireless communication system when there is a target access device among the multiple access devices whose reported signal strength is less than the warning threshold, and transmit signal waves according to the recalibrated beam information.

14. The device according to claim 9, characterized in that Also includes: The second recalibration module is used to perform a beam calibration process between the multi-stream converter and the changed access device when the multiple access devices connected to the signal access point change, update the beam direction weight between the multi-stream converter and the changed access device, and transmit the signal wave according to the updated beam direction weight.

15. A wireless communication system, characterized in that: include: A signal access point for accessing a network signal; sending a downlink data signal based on a calibration beam through the signal access point, and sending resource unit allocation information of orthogonal frequency division multiple access to a multi-stream converter through the signal access point; A multi-stream converter, connected to the signal access point, for demodulating and forwarding the downlink data signal from the signal access point; the signal access point and the multi-stream converter form a communication link through a power line to achieve message interaction between the signal access point and the multi-stream converter; An access device accesses the network through the signal wave of the signal access point; The multi-stream converter is further used to send multi-stream signals directed to multiple access devices based on the demodulation result and resource unit allocation information of orthogonal frequency division multiple access; The signal access point is further used to adjust the beam direction weight between the multi-stream converter and each of the access devices according to the received signal measurement result.

16. An electronic device, characterized in that: include: Memory for storing computer programs; A processor, configured to execute the computer program to implement the method according to any one of claims 1 to 8.

17. A non-transitory electronic device readable storage medium, characterized in that: The invention comprises: a program, which, when executed by an electronic device, causes the electronic device to execute the method according to any one of claims 1 to 8.

Images