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Channel access method and access point

A channel access method and access point technology, applied in the field of communication, can solve problems such as difficult coexistence

Active Publication Date: 2014-12-03
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that based on the current channel access mechanism, it is difficult for the next-generation WiFi system to coexist with the traditional WiFi system. Therefore, a new channel access mechanism is needed to achieve the coexistence of the next-generation WiFi system and the traditional WiFi system.

Method used

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  • Channel access method and access point

Examples

Experimental program
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Effect test

Embodiment approach

[0072] In another optional implementation manner, the first downlink information may include a channel occupancy indication, downlink data, and a data pilot signal. The downlink data here refers to useful data that needs to be sent to the first STA. Based on this, an implementation manner in which the first AP continuously sends the first downlink information on the downlink subframe of the next TXOP in the listening time includes: Continuously sending the channel occupancy indication on subframes, the channel occupancy indication is used to notify the second AP in the second system that the first AP occupies the channel before the end of the next TXOP; and The downlink data and / or the data pilot signal are continuously sent on the remaining downlink subframes of the next TXOP.

[0073] Wherein, the first AP first continuously sends the channel occupation indication on the first downlink subframe of the next TXOP, so that the second AP in the second system can know that the c...

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Abstract

Embodiments of the present invention provide a channel access method and an access point. The method comprises: a first AP in a first system sending, to a first STA in the first system, a listening time identification used for identifying a listening time reserved on a channel, so as to instruct the first STA not to send information and not to perform random access in the listening time; searching, on the channel in the listening time, for a sequence number used for the random access in a second system to obtain a search result, and determining, according to the search result, whether the channel is obtained in a contention; and if the channel is obtained in the contention, continuously sending first downlink information on a downlink subframe of a next TXOP of the listening time, and receiving uplink information or second downlink information sent by the first STA on an uplink subframe of the next TXOP. The technical solution of the present invention provides a new channel access mechanism, and can achieve coexistence of a next-generation WiFi system and a conventional WiFi system.

Description

technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular to a channel access method and an access point. Background technique [0002] In the wireless local area network standard, carrier sensing / collision avoidance (Carrier Sensing Multi-Access / Collision Avoidance, referred to as CSMA / CA) technology is used as a channel access method, such as Wireless Fidelity (Wireless Fidelity, referred to as WiFi) system. Carrier sense is mainly used to determine whether the channel is available. The 802.11 standard includes two carrier sense functions: physical carrier sense and virtual carrier sense. [0003] Compared with the traditional WiFi system, in the next-generation WiFi system, in order to meet the higher rate requirements (tens of Gb / s), it is necessary to use spectrum resources more effectively. Orthogonal Frequency Duplex Multi-Access (OFDMA for short), carrier aggregation, and interference management technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W72/54
CPCH04W74/0808H04W74/0816H04W52/0209H04W52/0219H04W52/0206Y02D30/70H04W74/0833H04W74/0866H04W72/541H04W74/004H04W74/006H04W74/0891H04W88/10
Inventor 张连波李云波李靖
Owner HONOR DEVICE CO LTD
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