Trigger-based approach with hidden node problem for uplink multi-user transmission in 802.11ax

Sok Ian Sou, Yinman Lee

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

To enable uplink (UL) multi-user (MU) transmission in 802.11ax, the Access Point (AP) sends a Trigger Frame to schedule stations (STAs) to send their UL data, and uses the new MU Request to Send (RTS) mechanism to protect large MU transmissions from hidden nodes. This paper addresses the potential problem of having one or more solicited STAs with nonzero Network Allocation Vector (NAV). This would reduce the system efficiency as some allocated resources will not be exploited for the reserved uplink transmission period. Accordingly, this paper proposes a variant of the Trigger operation considering the employment of massive multiple input and multiple output (MIMO) on the AP side, designated as Massive MU RTS (MMU-RTS) mechanism. In the proposed mechanism, some backup STAs not included on the trigger list, but having zero NAV are permitted to respond to the AP together with the solicited STAs. In particular, two user selection algorithms are proposed for the MMU-RTS mechanism. The efficiency of the proposed method is demonstrated through extensive numerical simulations.

原文English
主出版物標題18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1-5
頁數5
ISBN(電子)9781509030088
DOIs
出版狀態Published - 2017 十二月 19
事件18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017 - Sapporo, Japan
持續時間: 2017 七月 32017 七月 6

出版系列

名字IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
2017-July

Other

Other18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
國家/地區Japan
城市Sapporo
期間17-07-0317-07-06

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程
  • 電腦科學應用
  • 資訊系統

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