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題名 Leader-Contention-Based User Matching for 802.11 Multiuser MIMO Networks
作者 郭桐惟
Kuo, Tung-Wei;Lee, Kuang-Che;Lin, Kate Ching-Ju;Tsai, Ming-Jer
貢獻者 資科系
日期 2014-04
上傳時間 29-Jun-2017 09:44:38 (UTC+8)
摘要 In multiuser MIMO (MU-MIMO) LANs, the achievable throughput of a client depends on who is transmitting concurrently with it. Existing MU-MIMO MAC protocols, however, enable clients to use the traditional 802.11 contention to contend for concurrent transmission opportunities on the uplink. Such a contention-based protocol not only wastes lots of channel time on multiple rounds of contention but also fails to maximally deliver the gain of MU-MIMO because users randomly join concurrent transmissions without considering their channel characteristics. To address such inefficiency, this paper introduces MIMOMate, a leader-contention-based MU-MIMO MAC protocol that matches clients as concurrent transmitters according to their channel characteristics to maximally deliver the MU-MIMO gain while ensuring all users fairly share concurrent transmission opportunities. Furthermore, MIMOMate elects the leader of the matched users to contend for transmission opportunities using traditional 802.11 CSMA/CA. It hence requires only a single contention overhead for concurrent streams and can be compatible with legacy 802.11 devices. A prototype implementation in USRP N200 shows that MIMOMate achieves an average throughput gain of 1.42× and $1.52× over the traditional contention-based protocol for two- and three-antenna AP scenarios, respectively, and also provides fairness for clients.
關聯 IEEE Transactions on Wireless Communications, 13(8), 4389-4400
資料類型 article
DOI http://dx.doi.org/10.1109/TWC.2014.2320908
dc.contributor 資科系
dc.creator (作者) 郭桐惟zh_TW
dc.creator (作者) Kuo, Tung-Wei;Lee, Kuang-Che;Lin, Kate Ching-Ju;Tsai, Ming-Jer
dc.date (日期) 2014-04
dc.date.accessioned 29-Jun-2017 09:44:38 (UTC+8)-
dc.date.available 29-Jun-2017 09:44:38 (UTC+8)-
dc.date.issued (上傳時間) 29-Jun-2017 09:44:38 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/110583-
dc.description.abstract (摘要) In multiuser MIMO (MU-MIMO) LANs, the achievable throughput of a client depends on who is transmitting concurrently with it. Existing MU-MIMO MAC protocols, however, enable clients to use the traditional 802.11 contention to contend for concurrent transmission opportunities on the uplink. Such a contention-based protocol not only wastes lots of channel time on multiple rounds of contention but also fails to maximally deliver the gain of MU-MIMO because users randomly join concurrent transmissions without considering their channel characteristics. To address such inefficiency, this paper introduces MIMOMate, a leader-contention-based MU-MIMO MAC protocol that matches clients as concurrent transmitters according to their channel characteristics to maximally deliver the MU-MIMO gain while ensuring all users fairly share concurrent transmission opportunities. Furthermore, MIMOMate elects the leader of the matched users to contend for transmission opportunities using traditional 802.11 CSMA/CA. It hence requires only a single contention overhead for concurrent streams and can be compatible with legacy 802.11 devices. A prototype implementation in USRP N200 shows that MIMOMate achieves an average throughput gain of 1.42× and $1.52× over the traditional contention-based protocol for two- and three-antenna AP scenarios, respectively, and also provides fairness for clients.
dc.format.extent 902231 bytes-
dc.format.mimetype application/pdf-
dc.relation (關聯) IEEE Transactions on Wireless Communications, 13(8), 4389-4400
dc.title (題名) Leader-Contention-Based User Matching for 802.11 Multiuser MIMO Networks
dc.type (資料類型) article
dc.identifier.doi (DOI) 10.1109/TWC.2014.2320908
dc.doi.uri (DOI) http://dx.doi.org/10.1109/TWC.2014.2320908