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Channel selection method and sending end

A sender and channel technology, applied in the field of communication, can solve problems such as long backoff time and low channel utilization

Active Publication Date: 2020-05-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the inventors found that the backoff time required for this channel selection method is long, resulting in low channel utilization

Method used

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  • Channel selection method and sending end

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Embodiment Construction

[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0059] It should be understood that the technical solutions of the embodiments of the present invention may be applied to a communication system using a carrier sense multiple access (English: Carrier Sensing Multiple Access, CSMA for short) technology. The communication system using the CSMA technology may be a wireless local area network (English: Wireless Local Area Networks, referred to as: WLAN) using an unlicensed spectrum (English: Unlice...

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Abstract

The embodiment of the invention provides a channel selection method and a sending end, and the method comprises the steps: sorting a plurality of channels, and generating a backoff count value; in each time slot from an initial time slot, equentially carrying out self-subtraction on the backoff count values according to the sorting sequence of the channels and the busy and idle states of each channel until the backoff count values are 0; and according to the result of self-subtraction of the backoff count value and the busy / idle state of at least one of the plurality of channels, selecting a channel used by a sending end to send data from the plurality of channels. The method and the sending end can improve the channel utilization rate.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method for selecting a channel and a transmitter. Background technique [0002] A wireless fidelity (English: Wireless Fidelity, WiFi for short) system can work in a scenario of multiple channels / sub-channels. For multi-channel scenarios, a channel selection method that maintains multiple backoff counters on multiple channels is currently proposed. Assuming that the system has a total of N channels, each channel corresponds to a backoff counter. When a station (English: station, abbreviation: STA) or an access point (English: Access Point, abbreviation: AP) has data to send, the STA or AP will Perform the following process to select a channel for data transmission: randomly generate the backoff count value of the backoff counter on each channel, and perform carrier sense multiple access (English: Carrier Sense Multiple Access, abbreviated as: CSMA) on eac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W16/10H04W24/02
CPCH04W16/10H04W74/0808H04W72/563H04W24/02H04W40/005H04W72/0453
Inventor 李彦淳李波屈桥
Owner HUAWEI TECH CO LTD
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