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QoS MANAGEMENT FOR MULTI-USER EDCA TRANSMISSION MODE IN 802.11AX NETWORKS

一种IEEE802.11、模式的技术，应用在通信网络领域，能够解决QoS劣化等问题，达到恢复QoS、恢复老化的效果

Active Publication Date: 2019-06-21
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0049] Consequently, the QoS in the network is severely degraded and appropriate QoS operations for traffic prioritization need to be reintroduced, which will be adapted to the medium envisioned in the 802.11ax standard Access Penalty Scheme

Method used

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  • QoS MANAGEMENT FOR MULTI-USER EDCA TRANSMISSION MODE IN 802.11AX NETWORKS
  • QoS MANAGEMENT FOR MULTI-USER EDCA TRANSMISSION MODE IN 802.11AX NETWORKS
  • QoS MANAGEMENT FOR MULTI-USER EDCA TRANSMISSION MODE IN 802.11AX NETWORKS

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Embodiment Construction

[0137] The invention will now be illustrated by means of certain non-limiting exemplary embodiments and by referring to the accompanying drawings.

[0138] figure 1 A communication system is shown in which a plurality of communication stations (or nodes) 101 to 107 are managed via a wireless local area network ( WLAN) wireless transmission channel 100 to exchange data frames. The radio transmission channel 100 is defined by an operating frequency band consisting of a single channel or a plurality of channels forming a composite channel.

[0139] Hereinafter, the word "site" refers to any type of site. The term “access point site” or simply “access point” (AP) refers to a station that plays the role of access point 110 . The term "non-access point station" or simply "non-AP station" or client station (STA) refers to other stations 101-107.

[0140] Accessing the shared wireless medium to send data frames is mainly based on CSMA / CA technology to sense the carrier and avoid c...

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Abstract

The invention relates to wireless network comprising an access point and non-AP stations. The station has traffic queues and associated a backoff counters which are decremented over time upon continuously sensing the medium as free during more than respective AIFS durations. To compensate additional opportunities provided by OFDMA RUs, a queue switches to an MU mode upon transmitting its data in an RU provided by the AP. To restore dynamicity of the backoff counters, frozen in the MU mode in the known techniques, embodiments provide the following at each expiry of one of the queue backoff counters: the current mode of the expiring traffic queue is determined; in case of legacy mode, the station accesses the channel to transmit data from the queue; whereas in case of MU mode, a new backoffvalue is drawn to reset the expiring backoff counter, without having data from the queue being transmitted.

Description

technical field [0001] The present invention relates generally to communication networks, and more particularly to a wireless communication method and corresponding apparatus in a wireless network including an access point (AP) and a plurality of non-AP stations. The present invention relates to communication networks that provide channel access to non-AP stations through contention such as EDCA, and provide secondary access to these non-AP stations to subclasses that divide the transmission opportunity TXOP granted to the access point channel (or resource unit) through which data is transmitted. [0002] The present invention is applicable in wireless communication networks, in particular 802.11ax networks, to provide stations with access to 802.11ax composite channels and / or to OFDMA resource units forming 802.11ax composite channels eg granted to access points , and enables uplink communication. Background technique [0003] The IEEE 802.11 MAC family of standards (a / b / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W84/18
CPCH04L5/0007H04W28/0268H04W28/0284H04W72/0453H04W74/002H04W74/02H04W74/0816H04W74/0833H04W74/085H04W84/12H04W84/18Y02D30/70H04W74/08H04W72/569
Inventor P·瓦伊格S·巴伦P·内左
Owner CANON KK
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