WO2016070342A1 - Procédé de charge sans fil, point d'accès sans fil et système de charge sans fil - Google Patents

Procédé de charge sans fil, point d'accès sans fil et système de charge sans fil Download PDF

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Publication number
WO2016070342A1
WO2016070342A1 PCT/CN2014/090301 CN2014090301W WO2016070342A1 WO 2016070342 A1 WO2016070342 A1 WO 2016070342A1 CN 2014090301 W CN2014090301 W CN 2014090301W WO 2016070342 A1 WO2016070342 A1 WO 2016070342A1
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Prior art keywords
wireless access
wireless
charging
access point
received signal
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PCT/CN2014/090301
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English (en)
Chinese (zh)
Inventor
陈晓鑫
张�林
阮卫
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华为技术有限公司
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Priority to PCT/CN2014/090301 priority Critical patent/WO2016070342A1/fr
Publication of WO2016070342A1 publication Critical patent/WO2016070342A1/fr

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  • the present invention relates to the field of communications technologies, and in particular, to a wireless charging method, a wireless access point, and a wireless charging system.
  • wireless charging methods have been applied to various fields of daily life.
  • One way of wireless charging is to use a wireless local area network (English: wireless local area networks, abbreviated: WLAN) signal charging.
  • WLAN wireless local area networks
  • the device to be charged receives the signal of the wireless local area network, and converts the received signal energy into electrical energy to charge itself.
  • the signal is transmitted in the omnidirectional antenna, the signal energy reaching the device to be charged is less, resulting in low energy utilization efficiency and low wireless charging efficiency.
  • the present invention provides a wireless charging method, a wireless access point, and a wireless charging system for improving charging efficiency of wireless charging and reducing charging time.
  • the present invention provides a wireless charging method, including:
  • the first wireless access point selects a beam direction with the highest received signal strength from all the received signal beam directions of the first device, and performs beamforming on the first device according to the beam direction with the largest received signal strength.
  • Way of wireless charging
  • the first wireless access point after receiving the charging request sent by the first device, sends the received signal strength in the charging request to the wireless access controller, where In the case that the radio access controller receives the received signal strength sent by the at least three radio access points, the method further includes:
  • the third wireless access point receives, by the third wireless access point, a coordinate position sent by the wireless access controller, where the coordinate position is the first calculated by the wireless access controller according to the signal strength sent by the at least three wireless access points a coordinate location of the device, the third wireless access point is a wireless access point other than at least three wireless access points that transmit received signal strength to the wireless access controller;
  • the third wireless access point adjusts beam pointing according to the coordinate position, and performs wireless charging in a beamforming manner on the first device.
  • the device performs wireless charging in the beamforming mode, it also includes:
  • the first device is associated with the wireless charging of the first device in a beamforming manner.
  • the method further includes:
  • the present invention also provides a wireless access point, including:
  • a first receiving unit configured to receive a charging request sent by the first device
  • a selecting unit configured to select a beam direction with the highest received signal strength from all received signal beam directions for the first device
  • a first charging unit configured to perform wireless charging of the first device in a beamforming manner according to a beam direction with a maximum received signal strength
  • a second receiving unit configured to receive an association request sent by the second device
  • a first sending unit configured to send the association request to a wireless access controller, to enable the wireless access controller to switch the first device to a channel of a second wireless access point to accept the second Wireless access point pair
  • the first device is wirelessly charged in a beamforming manner, wherein a channel of the second wireless access point is different from a channel of the first wireless access point.
  • the wireless access point further includes:
  • a third receiving unit configured to receive a coordinate position sent by the wireless access controller, where the coordinate position is calculated by the wireless access controller according to a signal strength sent by the at least three wireless access points The coordinate position of a device;
  • a second charging unit configured to adjust beam direction according to the coordinate position, and perform wireless charging in a beamforming manner on the first device.
  • the wireless access point further includes:
  • An acquiring unit configured to acquire a media access control address of the first device after performing wireless charging on the first device in a beamforming manner
  • a second sending unit configured to send, to the wireless access controller, a media access control address of the first device, to enable the wireless access controller to control an uncharged wireless access point according to the media access control address and
  • the first device is associated with the wireless charging of the first device in a beamforming manner.
  • a third sending unit configured to send a charging speed of the first device to the wireless access controller, so that the wireless access controller adjusts to the first device when the charging speed is less than a preset charging speed The number of wireless access points for wireless charging in beamforming mode.
  • the present invention also provides a wireless charging system, including:
  • the wireless access controller communicates with the wireless access point and communicates with the first device through the wireless access point.
  • the method further includes:
  • the first device is in a sleep mode during charging, and periodically enters an operating mode, and sends a signal to the wireless access point when in the working mode, so that the wireless access point is based on the received signal strength. Adjusting the beam pointing of the wireless charging of the first device in a beamforming manner.
  • the wireless charging method, the wireless access point and the wireless charging system of the present invention reduce the charging time while ensuring normal communication of the system while improving charging efficiency.
  • the first wireless access point receives the charging request sent by the first device Afterwards, the first wireless access point points from the beam that has the highest received signal strength to all the received signal beam pointers for the first device, and performs wireless charging of the first device in a beamforming manner according to the selected beam direction.
  • This charging method ensures that the signal strength to the first device is maximized, and the wireless charging efficiency can be improved.
  • the first wireless access point receives an association request sent by the second device, and sending the association request to the wireless access controller, so that the wireless access controller switches the first device to the first a channel of the second wireless access point to receive wireless charging of the first device in a beamforming manner by the second wireless access point, wherein the channel of the second wireless access point is connected to the first wireless connection
  • the channel of the in point is different.
  • the first wireless AP can preferably process the communication service preferentially, and the first wireless AP does not affect the charging efficiency of the first device because the first wireless AP processes the communication service.
  • Embodiment 1 is a flowchart of Embodiment 1 of a wireless charging method according to an embodiment of the present invention
  • Embodiment 2 is a flowchart of Embodiment 2 of a wireless charging method according to an embodiment of the present invention
  • Embodiment 1 of a wireless access point according to an embodiment of the present invention
  • Embodiment 2 of a wireless access point according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of Embodiment 3 of a wireless access point according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a wireless charging system according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing the hardware configuration of a wireless access point according to an embodiment of the present invention.
  • Embodiment 1 of a wireless charging method includes:
  • Step 101 The first wireless access point receives a charging request sent by the first device.
  • a terminal device and a wireless access point communicate with each other through wireless signals, and when the terminal device wants to perform wireless charging, a charging request is sent to the wireless access point.
  • the first device is a terminal device that sends a charging request to the wireless AP
  • the first wireless access point refers to multiple wireless APs that receive the first device to send a charging request.
  • Step 102 The first wireless access point selects a beam direction with the highest received signal strength from all the received signal beam directions of the first device, and points the beam with the highest received signal strength to the first device. Perform wireless charging in the beamforming mode.
  • the first wireless AP After receiving the charging request sent by the first device, the first wireless AP selects an optimal beam direction according to the received signal strength of the first device, and different received signals have different signal strengths. Therefore, the first wireless AP is The beam direction of all received signals is selected to be the beam direction with the highest received signal strength, and the first wireless AP performs beamforming on the first device according to the selected beam with the highest received signal strength, which is the maximum received signal strength. The beam pointing is beamformed to maximize the signal strength to the first device.
  • Step 103 The first wireless access point receives an association request sent by the second device, and sends the association request to the wireless access controller, so that the wireless access controller switches the first device to the second device.
  • a channel of the wireless access point to receive wireless charging of the first device in a beamforming manner by the second wireless access point, wherein the channel of the second wireless access point and the first wireless access The channel of the point is different.
  • the second device sends an association request to the first wireless AP, indicating that the second device needs the first wireless AP to provide the wireless communication service to the first wireless AP.
  • the first wireless AP can provide wireless charging and wireless communication service services for multiple devices.
  • the other wireless AP may be provided with the wireless communication service for the second device.
  • the embodiment of the present invention causes the first wireless AP to provide a wireless communication service for the second device, and allows the first device to transfer to another wireless AP, and the other wireless AP continues to wirelessly charge the first device.
  • the first wireless AP In order to achieve the priority of processing the association request of the second device without affecting the charging process of the first device, the first wireless AP needs to be controlled by a wireless access controller (English: access controller, abbreviated as AC).
  • the specific process is The first wireless AP forwards the association request sent by the second device to the wireless AC.
  • adjacent wireless APs in the WLAN use different channels. Therefore, when the wireless AC receives the request, the first device needs to be switched from the channel of the first wireless AP to the channel of the second wireless AP.
  • the second wireless AP selects a beam direction with the highest received signal strength from the beam directions of all the received signals, and performs wireless charging of the first device in a beamforming manner according to the beam direction with the largest received signal strength, so that the first wireless AP is the first
  • the charging process of the first device is not interrupted, and the first device is charged by the second wireless AP.
  • the first wireless AP After receiving the charging request sent by the first device, the first wireless AP selects a beam direction with the highest received signal strength from all the received signal beam directions for the first device, according to the beam direction with the highest received signal strength.
  • the first device performs wireless charging in a beamforming manner, and the charging method ensures that the signal strength to the first device is maximized, and the wireless charging efficiency can be improved.
  • the first wireless AP receives the charging request sent by the second device during the charging process of the first wireless AP, and sends the association request to the wireless access controller, so that the wireless access controller will The first device switches to a channel of the second wireless access point. In this way, the first wireless AP can satisfy the wireless charging requirement of the first device while ensuring priority processing of the communication service.
  • the first wireless AP can preferably process the communication service preferentially, and the first wireless AP does not affect the charging efficiency of the first device because the first wireless AP processes the communication service.
  • the embodiment of the present invention further provides a wireless charging method.
  • a flowchart of Embodiment 2 of a wireless charging method according to an embodiment of the present invention is shown. The method includes:
  • Step 201 The first wireless access point receives the charging request sent by the first device.
  • Step 202 The first wireless access point selects a beam direction with the highest received signal strength from all the received signal beam directions of the first device, and points the beam with the highest received signal strength to the first device. Perform wireless charging in the beamforming mode.
  • Step 203 The first wireless access point receives an association request sent by the second device, and sends the association request to the wireless access controller, so that the wireless access controller switches the first device to the second device.
  • a channel of the wireless access point to receive wireless charging of the first device in a beamforming manner by the second wireless access point, wherein the channel of the second wireless access point and the first wireless access The channel of the point is different.
  • Steps 201 to 203 are the same as steps 101 to 103, and are not described herein again.
  • the third wireless access point is wirelessly charged by the wireless AC, as shown in steps 204-205.
  • Step 204 The third wireless access point receives a coordinate position sent by the wireless access controller, where the coordinate position is calculated by the wireless access controller according to the signal strength sent by the at least three wireless access points.
  • the coordinate location of the first device, the third wireless access point is a wireless access point other than at least three wireless access points that transmit received signal strength to the wireless access controller.
  • the first wireless AP or the second wireless AP in the step 201-203 sends the received signal strength to the wireless device to the wireless AC.
  • the signal strength may be the maximum signal strength received by the wireless AP, or may be an omnidirectional beam. Signal strength; when the wireless AC receives the signal strength transmitted by at least three wireless APs, it can be based on at least three wireless APs
  • the transmitted signal strength calculates the coordinate position of the first device. For example, the wireless AC may select the signal strength sent by the three wireless APs from the received signal strength, calculate the coordinate position of the first device by using the received signal strength indication positioning algorithm, and then send the calculated calculation to the third wireless AP by the wireless AC.
  • the manner in which the coordinate position of a device indicates that the third wireless AP charges the first device.
  • the third wireless AP is another wireless AP in the network that is different from the first wireless AP and the second wireless AP.
  • Step 205 The third wireless access point adjusts beam direction according to the coordinate position, and performs wireless charging in a beamforming manner on the first device.
  • the adjustment beam points to the coordinate position, that is, the third wireless AP adjusts the beam to point to the first device, so that the third wireless AP reaches the signal strength of the first device. maximum.
  • the method for transmitting the coordinate position of the first device to the third wireless AP in the network by the wireless AC, instructing the third wireless AP to adjust the beam direction according to the coordinate position, and performing beamforming on the first device Wireless charging in a manner such that the first device can simultaneously receive signals transmitted by multiple wireless APs (for example, simultaneously receiving signals transmitted by the first wireless AP and the third wireless AP, or simultaneously receiving the second wireless AP and the third The signal transmitted by the wireless AP), therefore, can further improve its wireless charging efficiency.
  • the third wireless AP may be embodied as one wireless AP other than the first wireless AP and the second wireless AP, or multiple wireless APs other than the first wireless AP and the second wireless AP.
  • the method may further include:
  • the first device is associated with the wireless charging of the first device in a beamforming manner.
  • the media access control (abbreviation: MAC address) of the first device may be obtained by the first wireless AP or the second wireless AP, and the MAC address is sent.
  • the wireless AP that does not charge the first device in the wireless AC control network is associated with the first device according to the MAC address, and the wireless AP selects the received signal strength from the beam pointing of all the received signals for the first device.
  • the beam is directed to perform wireless charging of the first device in a beamforming manner according to the beam with the highest received signal strength.
  • the wireless AP in the wireless AC controlled network that does not charge the first device is another wireless AP in the network that is different from the first wireless AP and the second wireless AP.
  • any one or more of the first wireless AP, the second wireless AP, or the third wireless AP may acquire the MAC address of the first device and send the wireless address to the wireless AC.
  • the AC controls the wireless AP that does not charge the first device to be associated with the first device according to the MAC address, and the wireless AP selects a beam direction with the highest received signal strength from all the received signal beam directions for the first device, according to the received signal.
  • the beam with the strongest intensity points to wireless charging of the first device in a beamforming manner.
  • the wireless AP in the wireless AC controlled network that does not charge the first device is another wireless AP in the network that is different from the first wireless AP, the second wireless AP, and the third wireless AP.
  • the method may further include:
  • the first device sends its own power information to the wireless AP that is charging itself for the period of the cycle.
  • the wireless AP receives the power information of the first device, it calculates the power information of the first device received according to the period of time.
  • the current charging speed is sent to the wireless AC, and the wireless AC determines whether the current charging speed is less than the preset charging speed. If less than the charging speed, the wireless AC adjusts the wireless access point that wirelessly charges the first device. The number of the to ensure the charging efficiency of the first device.
  • the charging speed is less than the preset charging speed, it indicates that the charging efficiency of the first device is too low to meet the wireless charging requirement of the device, and the charging efficiency needs to be improved to reduce the charging time.
  • the wireless AC can indicate that the first device is not in the network.
  • the charged wireless AP wirelessly charges the first device in a beamforming manner. Or, considering that the phase superposition of the transmitted signals between different wireless APs may attenuate the signal reaching the first device, the wireless AC may also control some wireless APs that are wirelessly charging the first device to stop charging, thereby indirectly improving the charging efficiency. .
  • an embodiment of the present invention further provides a wireless AP for implementing the wireless charging method described above.
  • the wireless AP may be embodied as a first wireless AP in the wireless charging method, including: a first receiving unit 301, a selecting unit 302.
  • the first charging unit 303, the second receiving unit 304, and the first transmitting unit 305 The internal structure and connection relationship will be further introduced below in conjunction with the working principle of the wireless AP.
  • the first receiving unit 301 is configured to receive a charging request sent by the first device.
  • the selecting unit 302 is configured to select a beam direction with the highest received signal strength from all received signal beam directions for the first device;
  • the first charging unit 303 is configured to perform wireless charging of the first device in a beamforming manner according to the beam direction with the highest received signal strength;
  • the second receiving unit 304 is configured to receive an association request sent by the second device.
  • the first sending unit 305 is configured to send the association request to the radio access controller, so that the radio access controller switches the first device to a channel of the second wireless access point to accept the The wireless access point wirelessly charges the first device in a beamforming manner, wherein a channel of the second wireless access point is different from a channel of the first wireless access point.
  • the wireless AP in the embodiment of the present invention can select a beam direction with the largest received signal strength from all the received signal beam directions of the first device, and perform the first device on the basis of the beam direction with the highest received signal strength.
  • Wireless charging in beamforming mode which ensures maximum signal strength to the first device and improves wireless charging efficiency.
  • the first wireless AP can preferably process the communication service preferentially, and the first wireless AP does not affect the charging efficiency of the first device because the first wireless AP processes the communication service.
  • the wireless access point in the embodiment of the present invention may also be embodied as a second wireless AP, that is, a first wireless AP that charges the first device already exists in the network, and the second device requests the first wireless AP.
  • the wireless access point of the embodiment of the present invention can be used as the second wireless AP after the handover, and the wireless AC is controlled to adjust the beam direction to wirelessly charge the first device.
  • the wireless AP may be implemented as a third wireless AP in the wireless charging method, and may specifically include: a third receiving unit 401 and a Two charging unit 402.
  • a third receiving unit 401 configured to receive a coordinate position sent by the wireless access controller, where the coordinate position is calculated by the wireless access controller according to a signal strength sent by the at least three wireless access points The coordinate position of the first device;
  • the second charging unit 402 is configured to adjust beam direction according to the coordinate position, and perform wireless charging in a beamforming manner on the first device.
  • the first device can simultaneously receive the signals sent by the plurality of wireless APs, thereby further improving the wireless charging efficiency.
  • the wireless AP may be embodied as any wireless AP that charges the first device, such as the first wireless AP in the wireless charging method.
  • the second wireless AP or the third wireless AP may specifically include: an obtaining unit 501 and a second sending unit 502.
  • the obtaining unit 501 is configured to acquire a media access control address of the first device after performing wireless charging in a beamforming manner on the first device.
  • a second sending unit 502 configured to send, to the wireless access controller, a media access control address of the first device, to enable the wireless access controller to control an uncharged wireless access point according to the media access control address.
  • the first device is wirelessly charged in a beamforming manner.
  • the first A device By transmitting the MAC address of the first device to the wireless AC, using the wireless AC to indicate the wireless AP in the network that does not charge the first device, performing wireless charging in the beamforming manner on the first device, and implementing multi-radio AP cooperation is the first A device performs wireless charging to better improve charging efficiency.
  • the embodiment of the present invention further provides another preferred solution for the wireless access point.
  • the wireless AP may be embodied as any wireless AP that charges the first device, such as the first wireless AP and the second in the wireless charging method.
  • the wireless AP or the third wireless AP may specifically include:
  • a third sending unit configured to send a charging speed of the first device to the wireless access controller, so that the wireless access controller adjusts to the first device when the charging speed is less than a preset charging speed The number of wireless access points for wireless charging in beamforming mode.
  • the same wireless AP can be integrated into all functions of the wireless access point in the embodiment of the present invention, that is, it can serve as the first wireless AP and directly charge the charging request of the first device.
  • the wireless AP wirelessly charges the first device according to the coordinate position of the first device sent by the wireless AC; and can also serve as an uncharged wireless AP (initial state), according to the medium access control address of the first device sent by the wireless AC and the first
  • the device is associated and wirelessly charged.
  • wireless APs can also have different wireless access points in the embodiment of the present invention.
  • the function is that the same wireless AP cannot be used as the first wireless AP, the second wireless AP, or the third wireless AP at the same time.
  • the invention is not limited thereto.
  • an embodiment of the present invention provides a wireless charging system, where the system includes:
  • the wireless access controller communicates with the wireless access point and communicates with the first device through the wireless access point.
  • the first device is in a sleep mode during charging, and periodically enters an operating mode, and sends the wireless access point to the wireless access point when in the working mode. And a signal, so that the wireless access point adjusts beam pointing of the wireless charging of the first device in a beamforming manner according to the received signal strength.
  • the embodiment of the present invention further provides a hardware configuration of a wireless AP, where the wireless AP may include an antenna array, a network interface, a memory, and at least one processor, such as a central processing unit (CPU) and communication. bus.
  • the antenna array is for receiving and transmitting wireless signals
  • the network interface is an interface for wireless AP and wireless AC communication
  • the memory is for storing executable instructions, such as a computer program.
  • the memory may be a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM), or non-volatile memory (English: non-volatile memory), for example only Read memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: sol id-state drive, abbreviation :SSD).
  • the processor is for executing executable instructions stored in the memory to perform various functional applications and data processing, and the communication bus is used to implement connection communication between the devices.
  • the wireless AP may include an antenna array 701, a network interface 702, a memory 703, and a processor 704, and the antenna array 701, the network interface 702, and the memory 703 are all connected to the processor 704.
  • the thick line in FIG. 7 is a communication bus ( English: bus).
  • the program is stored in the memory 703, and the processor 704 runs the program stored in the storage 703 to implement the following functions:
  • Receiving a charging request sent by the first device selecting a beam direction with the highest received signal strength from all the received signal beam directions of the first device, and performing beaming on the first device according to the beam direction with the largest received signal strength Forming wireless charging; receiving an association request sent by the second device, sending the association request to the wireless access controller, so that the wireless access controller switches the first device to the second wireless access point a channel to receive wireless charging of the first device in a beamforming manner by the second wireless access point, wherein a channel of the second wireless access point is different from a channel of the first wireless access point.
  • the first wireless access point after receiving the charging request sent by the first device, sends the received signal strength in the charging request to the wireless access controller, and the wireless access controller receives at least three In the case of the received signal strength sent by the wireless access point, it also includes:
  • the coordinate position is a coordinate position of the first device calculated by the wireless access controller according to a signal strength sent by the at least three wireless access points, where
  • the third wireless access point is a wireless access point other than at least three wireless access points that transmit received signal strength to the wireless access controller;
  • the beamforming is adjusted according to the coordinate position, and the first device is wirelessly charged in a beamforming manner.
  • the method further includes:
  • the first device is wirelessly charged in a beamforming manner.
  • it also includes:
  • the wireless AP provided by the embodiment of the present invention can improve the wireless charging rate of the first device, and can also meet the wireless charging requirement of the first device while ensuring priority processing of the communication service.

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Abstract

Cette invention concerne un procédé de charge sans fil, un point d'accès sans fil, et un système de charge sans fil, le procédé comprenant les étapes consistant à : recevoir à un premier point d'accès sans fil une requête de charge transmise par un premier dispositif (101) ; sélectionner un pointage de lobe d'une intensité maximale de signal reçu parmi tous les pointages de lobe des signaux reçus pour le premier dispositif, et effectuer la charge sans fil du premier dispositif selon une manière de formation de faisceau en fonction du pointage de lobe de l'intensité maximale de signal reçu (102) ; et transmettre à un contrôleur d'accès sans fil par le premier point d'accès sans fil une requête d'association reçue transmise par un second dispositif, de telle sorte que le contrôleur d'accès sans fil commute le premier dispositif sur un canal du second point d'accès sans fil pour recevoir la charge sans fil effectuée sur le premier dispositif selon une manière de formation de faisceau par le second point d'accès sans fil, le canal du second point d'accès sans fil étant différent du canal du premier point d'accès sans fil (103). L'invention assure un service de communication normal de réseaux locaux sans fil (WLAN) et accroît un rendement de charge sans fil du dispositif.
PCT/CN2014/090301 2014-11-05 2014-11-05 Procédé de charge sans fil, point d'accès sans fil et système de charge sans fil WO2016070342A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN106028286A (zh) * 2016-07-12 2016-10-12 努比亚技术有限公司 无线局域网接入装置及方法
CN106028286B (zh) * 2016-07-12 2020-03-27 努比亚技术有限公司 无线局域网接入装置及方法

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