WO2015176291A1

WO2015176291A1 - Wireless fidelity wifi back haul method and device

Info

Publication number: WO2015176291A1
Application number: PCT/CN2014/078215
Authority: WO
Inventors: 朱胡飞; 张军平
Original assignee: 华为技术有限公司
Priority date: 2014-05-23
Filing date: 2014-05-23
Publication date: 2015-11-26
Also published as: CN105960814A; CN105960814B

Abstract

The present invention relates to the technical field of communications, particularly to a WiFi back haul method and device. The method comprises: in the solution, after detecting an idle WiFi channel, a transmission end notifies a receiving end that the idle WiFi channel transmission end is available by transmitting a data transmission request message on the idle WiFi channel; the receiving end determines WiFi back haul channels from the idle WiFi channel detected by the transmission end; and the transmission end transmits data packets on at least two discontinuous WiFi channels in the WiFi back haul channels determined by the receiving end. Even if the specified WiFi channel is discontinuous, transmission can be conducted, thus improving resource utilization and transmission efficiency.

Description

Wireless fidelity WiFi back transmission method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a WiFi backhaul method and apparatus. Background technique

As a short-range wireless communication technology, WiFi (Wireless Fidelity) technology has been widely used due to its free frequency and high transmission rate. For example, in an airport, restaurant, or conference room with an access point (Access Point), the WiFi device accesses the network through the AP; for example, in the scenario where the AP is not set up, through the direct connection between the WiFi devices. Communication, realizing the sharing of data between WiFi devices and the use of various services, that is, communication between WiFi devices.

At present, in the WiFi system, including STA (Station, site, ie WiFi user), AP, AC (Access Controller, access controller), BRAS (Broadband Remote Application Server), gateway server (Portal) Nodes such as Server) and RADIUS (Remote Authentication Dial-in User Service) are shown in Figure 1.

In the prior art, the backhaul part of the network refers to the transmission channel between the core network or the backbone network and the base station, and the wireless communication mode is adopted in the backhaul part, and the authorized spectrum is often used in the implementation process, but due to the authorization The frequency is limited. Therefore, in order to solve the problem of insufficient licensed spectrum, a WiFi backhaul using an unlicensed spectrum is proposed, which is called WiFi backhaul.

In the prior art, when WiFi backhauling, there is a defect that resource utilization is low and transmission efficiency is low. Summary of the invention

The embodiment of the invention provides a method and a device for transmitting WiFi back to solve the problem of low resource utilization and low transmission efficiency in the prior art. The specific technical solutions provided by the embodiments of the present invention are as follows:

In a first aspect, a wireless fidelity WiFi backhaul method is provided, including:

Detecting an idle WiFi channel, and transmitting a data transmission request message to the receiving end on the detected idle WiFi channel;

Receiving a data sending reply message sent by the receiving end, and using the WiFi channel occupied by the data sending reply message as a WiFi return channel;

Data packets are transmitted on at least two non-contiguous WiFi channels of the WiFi return channel. With reference to the first aspect, in a first possible implementation, the data sending request message includes size information of the data packet to be sent to the receiving end.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, after receiving the data sending reply message sent by the receiving end, the method further includes:

Determining, according to the data sending reply message, a duration required for transmitting the data packet; transmitting data packets on two non-contiguous WiFi channels of the WiFi return channel, specifically including:

Data packets are transmitted over the two non-contiguous WiFi channels of the WiFi return channel for the duration.

With reference to the first aspect, or the first to the second possible implementation manners of the first aspect, in a third possible implementation manner, the data sending request message is a request to send an RTS message, where the data sending reply message is Eliminate sending CTS messages.

In a second aspect, a wireless fidelity WiFi backhaul method is provided, including:

Receiving a data transmission request message sent by the transmitting end on the idle WiFi channel;

Determining a WiFi return channel from a WiFi channel occupied by receiving the data transmission request message, and sending a data transmission reply message to the sending end on the WiFi return channel;

Receiving, by the transmitting end, a data packet transmitted on at least two non-contiguous WiFi channels in the WiFi backhaul channel.

With reference to the second aspect, in a first possible implementation manner, the data sending request message includes size information of the data packet to be sent by the sending end. With the first possible implementation of the second aspect, in a second possible implementation, after receiving the data sending request message sent by the sending end, the method further includes:

Measuring channel quality indication CQI information of the WiFi return channel;

Determining a duration of receiving the data packet according to the size information of the data packet to be sent by the sending end, and the CQI information;

Receiving, by the sending end, the data packet transmitted on the at least two non-contiguous WiFi channels in the WiFi backhaul channel, specifically:

Receiving, during the duration, the data packets transmitted by the transmitting end on at least two non-contiguous WiFi channels in the WiFi backhaul channel.

With reference to the second aspect, or the first to the second possible implementation manners of the second aspect, in a third possible implementation manner, the data sending request message is a request to send an RTS message, where the data sending reply message is Eliminate sending CTS messages.

In a third aspect, a wireless fidelity WiFi backhaul device is provided, including:

a sending unit, configured to detect an idle WiFi channel, and send a data sending request message to the receiving end on the detected idle WiFi channel;

a receiving unit, configured to receive a data sending reply message sent by the receiving end, and use the WiFi channel occupied by the data sending reply message as a WiFi return channel;

And a transmitting unit, configured to transmit a data packet on at least two non-contiguous WiFi channels of the WiFi return channel.

With reference to the third aspect, in a first possible implementation manner, the data sending request message sent by the sending unit includes size information of the data packet to be sent to the receiving end.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation, the transmission unit is further configured to:

Determining, according to the data sending reply message, a duration required for transmitting the data packet; when the transmitting unit transmits a data packet on two non-contiguous WiFi channels of the WiFi return channel, specifically:

Number of transmissions on two non-contiguous WiFi channels of the WiFi return channel within the duration According to the package.

With reference to the third aspect, or the first to the second possible implementation manners of the third aspect, in a third possible implementation manner, the data sending request message sent by the sending unit is a request to send an RTS message, and the receiving The data received by the unit sends a reply message to eliminate the sending of the CTS message.

In a fourth aspect, a wireless fidelity WiFi backhaul device is provided, including:

a first receiving unit, configured to receive a data sending request message sent by the sending end on the idle WiFi channel;

a sending unit, configured to determine a WiFi backhaul channel from a WiFi channel occupied by receiving the data sending request message, and send a data sending reply message to the sending end on the WiFi backhaul channel;

And a second receiving unit, configured to receive, by the sending end, a data packet transmitted on at least two non-contiguous WiFi channels in the WiFi backhaul channel.

With reference to the fourth aspect, in a first possible implementation manner, the data sending request message received by the first receiving unit includes size information of the data packet to be sent by the sending end.

In conjunction with the first possible implementation of the fourth aspect, in a second possible implementation, the second receiving unit is further configured to:

When receiving, by the second receiving unit, the data packet transmitted by the sending end on at least two non-contiguous WiFi channels in the WiFi backhaul channel, the second receiving unit is specifically:

With reference to the fourth aspect, or the first to the second possible implementation manners of the fourth aspect, in a third possible implementation manner, the data sending request message received by the first receiving unit is a request to send an RTS message, The data sending reply message sent by the sending unit is to cancel sending the CTS message.

The beneficial effects of the present invention are as follows: In the prior art, the transmitting end can only describe the data packet on the continuous idle WiFi channel. Therefore, in the case where the resource is wasted and the transmission efficiency is low, in the embodiment of the present invention, the idle WiFi channel is detected, and the detected Sending a data transmission request message to the receiving end on the idle WiFi channel; receiving the data sending reply message by the receiving end, and using the WiFi channel occupied by the receiving data as the WiFi return channel, wherein the WiFi return channel is the direction a channel in the WiFi channel occupied by the receiving end when transmitting the data sending request message; transmitting a data packet on at least two non-contiguous WiFi channels of the WiFi return channel, in which the transmitting end can be in the WiFi return channel Data packets are transmitted on at least two non-contiguous WiFi channels, and even if the WiFi channels are discontinuous, transmission can be performed, thereby improving resource utilization and transmission efficiency. DRAWINGS

1 is a schematic diagram of a WiFi networking in an embodiment of the present invention;

2 is a first detailed flowchart of WiFi backhaul according to an embodiment of the present invention;

3 is a second detailed flowchart of WiFi backhaul according to an embodiment of the present invention;

4 is a first embodiment of WiFi backhaul according to an embodiment of the present invention;

FIG. 5 is a second embodiment of a WiFi backhaul according to an embodiment of the present invention;

6 is a schematic diagram of a first functional structure of a WiFi backhaul device according to an embodiment of the present invention;

FIG. 7 is a schematic diagram showing a second functional structure of a WiFi backhaul device according to an embodiment of the present invention;

8 is a schematic structural diagram of a first entity of a WiFi backhaul device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second entity of a WiFi backhaul device according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly described in conjunction with the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are Some embodiments, rather than all of the embodiments, are invented. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. The term "and/or," in this article is merely an association describing the associated object, indicating that there can be three relationships, for example, Α and / or Β, which can mean: 单独 exist alone, Α and Β exist, alone There are three cases. In addition, the character " /,,, in this article, generally means that the contextual object is an "or" relationship.

In the embodiment of the present invention, a method for WiFi backhaul is provided, where: detecting an idle WiFi channel, and transmitting a data transmission request message to the receiving end on the detected idle WiFi channel; receiving and transmitting data transmission Replying to the message, and using the WiFi channel occupied by the receiving data as a WiFi return channel, wherein the WiFi return channel is a channel in the WiFi channel occupied when transmitting the data transmission request message to the receiving end; Transmitting data packets on at least two non-contiguous WiFi channels of the transmission channel, in which the transmitting end can transmit data packets on at least two non-contiguous WiFi channels of the WiFi return channel, even if the WiFi channel is discontinuous , can also be transmitted, thus improving resource utilization and transmission efficiency.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Embodiment 1

Referring to FIG. 2, a method for WiFi backhaul is provided in the embodiment of the present invention. The specific process of the method is as follows:

Step 200: Detect an idle WiFi channel, and send a data transmission request message to the receiving end on the detected idle WiFi channel.

Step 210: The receiving end sends a data sending reply message, and uses the WiFi channel occupied by the receiving data to send a reply message as a WiFi return channel;

Step 220: Transmit data packets on at least two non-contiguous WiFi channels of the WiFi return channel. In the embodiment of the present invention, when the data sending request message is sent to the receiving end on the detected idle WiFi channel, the data sending request message may be sent on multiple bandwidths, for example, having four bandwidths, the first bandwidth and The second bandwidth is 20M, the third bandwidth is 40M, and the fourth bandwidth is 80M.

In order to improve the utilization of the spectrum, in the embodiment of the present invention, the start and end points of each bandwidth can be adjusted. For example, bandwidth 1 is AB, bandwidth 2 is CD, (a point between people and B, that is, a part between CDs belongs to AB, in order to improve spectrum utilization, it can be taken The start and end points of the width 2 are adjusted.

In the embodiment of the present invention, the data sending request message includes size information of the data packet sent to the receiving end, where the size information of the data packet is used by the receiving end to calculate the duration of the data packet, and at the end of the duration, the receiving end may receive other sending. The data sent by the end.

In the implementation of the present invention, the receiving end may calculate the duration of the data packet according to the size information of the data packet, and then the receiving end carries the calculated length of the data packet in the data sending reply message and sends the data packet to the sending end. Therefore, the receiving end is received. After the sent data sends a reply message, it also includes the following operations:

Determining the length of time required to transmit the data packet according to the data sending reply message;

In this case, when transmitting data packets on two non-contiguous WiFi channels of the WiFi return channel, the following methods may be used, optionally:

The data packets are transmitted over two non-contiguous WiFi channels of the WiFi return channel within the duration. In the embodiment of the present invention, the WiFi backhaul channel has multiple forms. Optionally, the WiFi backhaul channel is a channel in the WiFi channel occupied by the data transmission request message sent to the receiving end.

In the embodiment of the present invention, the data sending request message has various forms, for example, an RTS (equest To Send) message, and a data sending reply message may be in various forms, for example, may be CTS (Clear To Send) , clear the send) message.

In the embodiment of the present invention, after receiving each data packet and correctly decoding the data packet, the receiving end returns an ACK (ACKnowledge) for the correctly decoded data packet on the corresponding channel, and the technology belongs to the WiFi field. The usual technical means, no longer here - detailed.

In this solution, after detecting the idle WiFi channel, the transmitting end notifies the receiving end by sending a data sending request message on each idle WiFi channel, and the idle WiFi channel transmitting end is available, and the receiving end further uses The WiFi return channel is determined in the idle WiFi channel detected by the transmitting end, and then the transmitting end transmits the data packet on the two non-contiguous WiFi channels in the specified WiFi channel determined by the receiving end, even if the specified The WiFi channel is discontinuous and can also be transmitted, thereby improving resource utilization and transmission efficiency.

Embodiment 2 Referring to FIG. 3, a method for WiFi backhaul is provided in the embodiment of the present invention, and the specific process of the method is as follows:

Step 300: Receive a data sending request message sent by the sending end on the idle WiFi channel. Step 310: Determine a WiFi returning channel from the WiFi channel occupied by the received data sending request message, and send the WiFi backhaul channel to the sending end on the WiFi returning channel. Send a data to send a reply message;

Step 320: Receive a data packet transmitted by the transmitting end on at least two non-contiguous WiFi channels in the WiFi return channel.

In the embodiment of the present invention, optionally, the data sending request message includes size information of the data packet to be sent by the sending end.

Further, in order to determine the length of time that the transmitting end occupies at least two non-contiguous WiFi channels to transmit data packets, in the embodiment of the present invention, after receiving the data sending request message sent by the sending end, the following operations are also included:

Determining the length of the received data packet according to the size information of the data packet to be sent by the transmitting end and the CQI information;

In this case, when receiving the data packet transmitted by the transmitting end on at least two non-contiguous WiFi channels in the WiFi return channel, the specific information may be:

The data packets transmitted by the transmitting end on at least two non-contiguous WiFi channels in the WiFi return channel are received within the duration.

Thus, at the end of the duration, the receiving end can release the designated WiFi channel as idle, and then receive the data packets sent by other transmitting ends.

In the embodiment of the present invention, the data sending request message has multiple forms, and may be an RTS message. Similarly, the data sending reply message may be in the form of multiple types. Optionally, it may be a CTS message.

In the embodiment of the present invention, after receiving the data packet transmitted by the transmitting end on the designated WiFi channel after receiving the data sending reply message, the following operations are also included:

If the packet is correctly decoded, it is sent to the sender on the channel receiving the packet. The ACK corresponding to the decoded packet.

In this solution, after detecting the idle WiFi channel, the transmitting end notifies the receiving end by sending a data sending request message on the idle WiFi channel, and the idle WiFi channel transmitting end is available, and the receiving end further transmits from the transmitting end. The WiFi return channel is determined in the detected idle WiFi channel, and then the transmitting end transmits the data packet on at least two non-contiguous WiFi channels in the WiFi return channel determined by the receiving end, even if the specified WiFi is The channel is discontinuous and can also be transmitted, thus improving resource utilization and transmission efficiency.

The first embodiment and the second embodiment are both single-hop solutions, except that the first embodiment is described from the perspective of the transmitting end, and the second embodiment is described from the perspective of the receiving end, and there may be more in practical applications. Jump node, such as 3 nodes: Node 1, Node 2, Node 3, if the data transmission direction is Node 1 ^→ Node 2 → Node 3, then when Node 1 and Node 2 communicate, Node 1 acts as the sender and Node 2 acts as At the receiving end, when node 1 and node 2 communicate, node 1 can perform step 200 - step 220, and node 2 can perform step 300 - step 320. Similarly, receiving 2 transmits the data packet after receiving the data packet. To node 3, at this time, node 2 and node 3 are to be communicated, wherein node 2 is the transmitting end, node 3 is the receiving end, node 2 can still perform step 200-step 220, and node 3 can perform step 300-step 320. ,.

Certainly, in practical applications, there may be more than three nodes. In this case, when any two adjacent nodes communicate, the transmitting end may perform step 200-step 220, such as between node n-1 and node n. In the communication, the node n-1 may perform step 200-step 220, and the node n may perform step 300-step 320. When the node n and the node n+1 communicate, the node n may also perform step 200-step 220, the node n +1 can perform steps 300-320.

When the return path has a multi-hop node, if the node n has a buffered data packet, in order to reduce the delay and improve the transmission efficiency, the node n may send the CTS message to the node n-1, and may also send the data packet to the node n+1. If the node n has no buffered data packet, the node n can send the data packet to the node n+1 after transmitting the CTS message to the node n-1 and receiving the data packet sent by the node n-1.

Of course, if the node n receives the data packet sent by the node n-1, and also sends the data packet to the node n+1, in order to avoid interference and improve the accuracy of the received data packet, the node n receives The frequency band of the data packet sent by the node n-1 is different from the frequency band of the node n sending the data packet to the node n+1.

For a better understanding of the embodiments of the present invention, a specific application scenario is given below, and a further detailed description is made for the process of WiFi backhaul, as shown in FIG. 4:

Embodiment 3

The AP directly accesses the eNB (ie, single hop;), and has 10 channels: channel 1, channel 2, channel 3 channel 10, and the bandwidth of each channel is 20M.

Step 400: The AP detects channel 1, channel 3, and channel 8 - channel 10 as idle WiFi channels. Step 410: The AP sends RTS to the eNB on channel 1, channel 3, and channel 8 - channel 10, respectively, where each The RTS carries the size of the data packet to be sent;

Step 420: After receiving the RTS on the channel 1, the channel 3, and the channel 8-channel 10, the eNB determines that the AP can use the channel 1, the channel 3, and the channel 8-channel 10 to transmit the data packet, and from the channel 1, the channel 3, After determining that channel 1, channel 3, channel 8, and other channels in channel 10 transmit RTS in channel 8-channel 10, channel 1, channel 3, channel 8, channel 10 are designated as the designated WiFi channel; step 430: eNB respectively Measuring the CQI of channel 1, channel 3, channel 8, channel 10, and determining the duration of the AP transmission packet according to the size of the data packet and the CQI;

Step 440: The eNB sends CTS to the AP on the channel 1, the channel 3, the channel 8, and the channel 10, and each CTS carries the determined duration;

Step 450: The AP transmits data packets to the eNB on the channel 1, the channel 3, the channel 8, and the channel 10 simultaneously in the foregoing duration;

Step 460: After receiving the data packet and correctly decoding the AP, the AP replies to the data packet on the corresponding channel.

Embodiment 4

The API accesses the eNB (ie, two hops) through AP2, and has 10 channels: channel 1, channel 2, channel 3 channel 10, and the bandwidth of each channel is 20M.

Step 500: The API detects that the channel 1, the channel 3, and the channel 8-channel 10 are idle WiFi channels; Step 510: The API sends an RTS to the AP2 on the channel 1, the channel 3, and the channel 8-channel 10, where each RTS carries the size of the data packet to be sent.

Step 520: After receiving the RTS on the channel 1, the channel 3, and the channel 8 channel 10, the AP2 determines that the API can use the channel 1, the channel 3, and the channel 8 - channel 10 to transmit the data packet, and from the channel 1, the channel 3, After determining that channel 1, channel 3, channel 8, and other channels in channel 10 transmit RTS in channel 8-channel 10, channel 1, channel 3, channel 8, channel 10 are designated as designated WiFi channels corresponding to the API;

Step 530: AP2 measures the CQI of channel 1, channel 3, channel 8, and channel 10, respectively, and determines the duration of the AP transmission data packet according to the size of the data packet and the CQI;

Step 540: AP2 sends CTS to the API on channel 1, channel 3, channel 8, and channel 10, and each CTS carries the determined duration;

Step 550: The API transmits the data packet to the AP2 on the channel 1, the channel 3, the channel 8, and the channel 10 simultaneously in the foregoing duration;

Step 560: AP2 receives the data packet, and after correctly decoding, responds to the data packet with an ACK on the corresponding channel.

Step 570: AP2 detects the channel 4-channel 6 is an idle WiFi channel, and sends an RTS to e B on channel 4-channel 6;

Step 580: The eNB selects the channel 5 from the channel 4-channel 6, the channel 6 is the designated WiFi channel corresponding to the AP2, and sends the CTS to the AP2 on the channel 5 and the channel 6 respectively;

Step 590: After receiving the CTS, the AP2 sends a data packet to the eNB on the channel 5 and the channel 6, respectively.

Step 600: After the eNB correctly decodes the data packet, the eNB sends an ACK to the AP2 for the data packet on the corresponding channel.

Based on the foregoing technical solution, as shown in FIG. 6, the embodiment of the present invention provides a WiFi backhaul device, where the WiFi backhaul device includes a sending unit 60, a receiving unit 61, and a transmitting unit 62, where: a sending unit 60 is configured to detect An idle WiFi channel, and sending a data transmission request message to the receiving end on the detected idle WiFi channel; The receiving unit 61 is configured to receive a data sending reply message sent by the receiving end, and use the WiFi channel occupied by the data sending reply message as a WiFi return channel;

The transmitting unit 62 is configured to upload a data packet on at least two non-contiguous WiFi channels of the WiFi return channel.

In the embodiment of the present invention, optionally, the data sending request message sent by the sending unit 60 includes size information of a data packet to be sent to the receiving end.

In the embodiment of the present invention, further, the transmission unit 62 is further configured to:

In the embodiment of the present invention, optionally, when the transmission unit 62 transmits a data packet on two non-contiguous WiFi channels of the WiFi return channel, the following is specifically:

The data packets are transmitted over two non-contiguous WiFi channels of the WiFi return channel within the duration. In the embodiment of the present invention, optionally, the data sending request message sent by the sending unit 60 is a request to send an RTS message, and the data sending reply message received by the receiving unit 61 is to cancel sending the CTS message.

Based on the foregoing technical solution, as shown in FIG. 7, an embodiment of the present invention provides a WiFi backhaul device, where the WiFi backhaul device includes a first receiving unit 70, a sending unit 71, and a second receiving unit 72, where:

The first receiving unit 70 is configured to receive a data sending request message sent by the sending end on the idle WiFi channel;

The sending unit 71 is configured to determine a WiFi return channel from the WiFi channel occupied by the received data sending request message, and send a data sending reply message to the sending end on the WiFi return channel; the second receiving unit 72 is configured to receive and send A data packet transmitted on at least two non-contiguous WiFi channels in a WiFi return channel.

In the embodiment of the present invention, optionally, the data sending request message received by the first receiving unit 70 includes size information of a data packet to be sent by the sending end.

In the embodiment of the present invention, the second receiving unit 72 is further configured to:

Measuring CQI information of the WiFi return channel;

Determining the time of receiving the data packet according to the size information and CQI information of the data packet to be sent by the transmitting end Long

In the embodiment of the present invention, optionally, when the second receiving unit 72 receives the data packet transmitted by the transmitting end on at least two non-contiguous WiFi channels in the WiFi backhaul channel, the following is specifically:

In the embodiment of the present invention, optionally, the data sending request message received by the first receiving unit 70 is an RTS message, and the data sending reply message sent by the sending unit 71 is a CTS message.

As shown in FIG. 8, a physical device diagram of a WiFi backhaul device according to an embodiment of the present invention includes at least one processor 801, a communication bus 802, a memory 803, and at least one communication interface 804.

The communication bus 802 is used to implement the connection and communication between the above components, and the communication interface 804 is used to connect and communicate with external devices.

The memory 803 is configured to store program code to be executed. The program code may include: a sending unit 8031, a receiving unit 8032, and a transmitting unit 8033. When the unit is executed by the processor 801, the following functions are implemented:

a sending unit 8031, configured to detect an idle WiFi channel, and send a data sending request message to the receiving end on the detected idle WiFi channel;

The receiving unit 8032 is configured to receive a data sending reply message sent by the receiving end, and send the WiFi channel occupied by the data sending reply message as a WiFi return channel;

The transmitting unit 8033 is configured to transmit a data packet on at least two non-contiguous WiFi channels of the WiFi return channel.

As shown in FIG. 9, a physical device diagram of a WiFi backhaul device according to an embodiment of the present invention, the WiFi backhaul device includes at least one processor 901, a communication bus 902, a memory 903, and at least one communication interface 904.

The communication bus 902 is used to implement the connection and communication between the above components, and the communication interface 904 is used to connect and communicate with external devices.

The memory 903 is configured to store program code that needs to be executed, and the program code may be specifically The method includes: a first receiving unit 9031, a sending unit 9032, and a second receiving unit 9033. When the unit is executed by the processor 901, the following functions are implemented:

The first receiving unit 9031 is configured to receive a data sending request message sent by the sending end on the idle WiFi channel.

The sending unit 9033 is configured to determine a WiFi return channel from the WiFi channel occupied by the received data transmission request message, and send a data sending reply message to the sending end on the WiFi return channel;

The second receiving unit 9034 is configured to receive a data packet that is sent by the sending end on at least two non-contiguous WiFi channels in the WiFi return channel.

In summary, in a WiFi backhaul provided in the embodiment of the present invention, an idle WiFi channel is detected, and a data transmission request message is sent to the receiving end on the detected idle WiFi channel; and the data sent by the receiving end is received. Sending a reply message, and transmitting a WiFi channel occupied by the data reply message as a WiFi return channel; transmitting a data packet on at least two non-contiguous WiFi channels of the WiFi return channel, in which the sender can be in the WiFi The data packets are transmitted on at least two non-contiguous WiFi channels of the return channel, and the transmission can be performed even if the WiFi channel is discontinuous, thereby improving resource utilization and transmission efficiency.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart and/or block diagrams, and combinations of processes and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions in one or more of the flow or in a block or blocks of the flowchart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus functions in one or more blocks of a flow or a flow diagram and/or block diagram of a flowchart. These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions in one or more blocks of the flowchart or in a flow or block of the flowchart.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and modifications

It is apparent that those skilled in the art can make various modifications and changes to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

Rights request

A wireless fidelity WiFi backhaul method, characterized in that:

Data packets are transmitted on at least two non-contiguous WiFi channels of the WiFi return channel.

2. The method according to claim 1, wherein the data transmission request message includes size information of the data packet to be sent to the receiving end.

The method of claim 2, after receiving the data sending reply message sent by the receiving end, the method further includes:

The method according to any one of claims 1-3, wherein the data sending request message is a request to send an RTS message, and the data sending reply message is to cancel sending a CTS message.

5. A wireless fidelity WiFi backhaul method, characterized in that:

The method according to claim 5, wherein the data transmission request message includes size information of the data packet to be sent by the transmitting end.

The method according to claim 6, wherein after receiving the data sending request message sent by the sending end, the method further includes:

The method according to any one of claims 5-7, wherein the data sending request message is a request to send an RTS message, and the data sending reply message is to cancel sending a CTS message.

9. A wireless fidelity WiFi backhaul device, comprising:

10. The apparatus according to claim 9, wherein the data transmission request message sent by the sending unit includes size information of the data packet to be sent to the receiving end.

The device according to claim 10, wherein the transmitting unit is further configured to: determine, according to the data sending reply message, a duration required for transmitting the data packet; the transmitting unit is in the WiFi back When transmitting data packets on two non-contiguous WiFi channels of a transmission channel, the details are as follows:

The device according to any one of claims 9 to 11, wherein the sending unit sends The sent data sending request message is a request to send an RTS message, and the data sending reply message received by the receiving unit is to cancel sending the CTS message.

13. A wireless fidelity WiFi backhaul device, comprising:

The device according to claim 13, wherein the data transmission request message received by the first receiving unit includes size information of the data packet to be sent by the transmitting end.

The device according to claim 14, wherein the second receiving unit is further configured to: measure channel quality indication CQI information of the WiFi return channel;

The device according to any one of claims 13 to 15, wherein the data sending request message received by the first receiving unit is a request to send an RTS message, and the data sending reply message sent by the sending unit is Eliminate sending CTS messages.