TXOP Exchange: A Mechanism for Cooperation in CSMA Networks

• NISHIO Takayuki

  Graduate School of Informatics, Kyoto University

• SHINKUMA Ryoichi

  Graduate School of Informatics, Kyoto University

• TAKAHASHI Tatsuro

  Graduate School of Informatics, Kyoto University

• MANDAYAM Narayan B.

  Wireless Information Network Laboratory (WINLAB), Rutgers University

抄録

Conventional mechanisms proposed for enhancing quality of service (QoS) in 802.11 networks suffer from a lack of backward compatibility and fairness with and to legacy devices. In this paper, we present a cooperative mechanism, called TXOP (transmission opportunity) Exchange, that provides a legacy-neutral solution in which only stations (STAs) participating in TXOP Exchange cooperatively use their available bandwidth to satisfy their required throughputs, while other legacy devices continue to get the same throughput performance as before. Specifically, we discuss the implementation of TXOP Exchange in legacy 802.11 networks. We show that this mechanism can be realized with minor modifications to the RTS (request-to-send) frames of only the STAs participating in TXOP Exchange and without any replacement of legacy access points or STAs. We show an example of a proportional fair algorithm for fair and efficient MAC cooperation using a Nash bargaining solution (NBS). A simulation study using a realistic simulator verifies that the TXOP Exchange mechanism ensures legacy neutrality and fair and efficient cooperation even when a large number of legacy STAs coexist.

収録刊行物

• IEICE Transactions on Communications

  IEICE Transactions on Communications E95.B (6), 1944-1952, 2012

  一般社団法人 電子情報通信学会

キーワード

• cooperative mechanism
• TXOP Exchange
• CSMA/CA
• wireless local area network
• legacy neutrality

詳細情報

• CRID: 1390001204376775168
• NII論文ID: 10031021425
• NII書誌ID: AA10826261
• DOI: 10.1587/transcom.e95.b.1944
• BIBCODE: 2012IEITC..95.1944N
• ISSN: 17451345
• ISSN: 09168516
• Web Site: https://www.jstage.jst.go.jp/article/transcom/E95.B/6/E95.B_1944/_pdf
• 本文言語コード: en
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