Channel binding method and device

A channel bundling and channel technology, applied in transmission path sub-channel allocation, wireless communication, digital transmission system, etc., can solve the problems of reducing the throughput of the transmission concurrency system, not being able to accurately know the current status of the channel, and not being able to perform channel bundling, etc.

Active Publication Date: 2017-03-01
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the CCA thresholds set by the 802.11n standard and the 802.11ac standard are all fixed values. In this case, the access point (Access Point, AP for short) cannot accurately know the current state of the channel, so that it cannot perform effective channel bonding, thereby reducing the concurrency of transmission and the throughput of the system

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Embodiment 1

[0041] figure 1 It is a flow chart of a channel bundling method provided by an embodiment of the present invention, the method is executed by an AP, and the application scenario of the method is that the AP prepares to bundle at least one channel with an STA, wherein the method specifically includes :

[0042] S101: The access point AP determines at least one of the average value of the received signal strength indicator RSSI of any channel between the AP and the station STA within a preset period of time, the interference received by the AP, and the interference received by the STA, wherein The average value of RSSI of any channel is: the average value of RSSI of all uplink wireless frames on any channel within a preset time period;

[0043] S102: The AP determines the CCA threshold corresponding to any channel according to at least one of the average value of RSSI of any channel, the interference received by the AP, and the interference received by the STA;

[0044] S103: ...

Embodiment 2

[0050] Based on the above embodiment, further, the above step S102 specifically includes: the AP calculates the CCA threshold according to CCA=K+a×ave_RSSI-b×interference1-c×interference2; wherein, CCA represents the CCA threshold corresponding to any channel , ave_RSSI indicates the average value of the RSSI of any channel, interference1 indicates the interference received by the AP, interference2 indicates the interference received by the STA, K is a constant, a is 0 or 1, b is 0 or 1, c is 0 or 1, and a , b, c are not 0 at the same time. Usually K can take -85dBm.

[0051] For example: K=0, a=0, b=0, c=1, then the above formula is: CCA=ave_RSSI-interference2, in this case, it is equivalent to not considering the factor that the AP is interfered.

[0052] For another example: K=0, a=0, b=1, c=0, then the above formula is: CCA=ave_RSSI-interference1, in this case, the factor of STA interference is not considered.

[0053] Of course, it can also be K=0, a=1, b=0, c=0, or K=0...

Embodiment 3

[0067] Figure 10 It is a flow chart of a channel bundling method provided by another embodiment of the present invention, the method is executed by an STA, and specifically includes:

[0068] S1001: The STA determines at least one of the average value of the received signal strength indicator RSSI of any channel between the AP and the STA, the interference received by the AP, and the interference received by the STA within a preset period of time, wherein any channel The average value of RSSI is: the average value of RSSI of all downlink wireless frames on any channel within a preset time period;

[0069] S1002: The STA determines the CCA threshold corresponding to any channel according to at least one of the average value of the RSSI of any channel, the interference received by the AP, and the interference received by the STA;

[0070] S1003: The STA sends the CCA threshold corresponding to any channel to the AP, so that the AP detects the current signal on any channel, and j...

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Abstract

The embodiment of the invention discloses a channel binding method and device, and the method comprises the steps that an AP determines at least one of the RSSI mean value of any one channel between the AP and an STA in a preset time, the interference with the AP and the interference with the STA; the AP determines a CCA threshold value corresponding to any one channel according at least one of the RSSI mean value of any one channel, the interference with the AP and the interference with the STA; finally the AP carries out the binding of a channel with the power value of a current signal being less than or equal to a CCA threshold value corresponding to any channel, and transmits a downlink wireless frame through the channel after binding. Through accurately determining the CCA threshold value corresponding to the channel in the preset time, the method effectively achieves the channel binding, improves the transmission concurrency, and increases the throughput of a system.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a channel bundling method and device. Background technique [0002] With the development of Wireless Local Area Network (WLAN for short) technology, the 802.11n standard proposes the concept of channel bonding, for example, two 20MHz channels can be expanded into 40MHz channels through the channel bonding technology. In the channel bonding technology, the Clear Channel Assessment (CCA) technology is very important. [0003] Clear Channel Assessment (CCA) technology marks the status of the channel by monitoring the strength of the signal in the channel. If it exceeds the clear channel assessment threshold, the status of the channel is marked as busy, otherwise, the status of the channel is marked is idle. Therefore, the determination of the CCA threshold in the CCA technology determines the state of the channel, and only when the CCA threshold is accurately...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/003H04W72/20
Inventor 王巍张帆张黔李云波
Owner HONOR DEVICE CO LTD
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