TY - GEN
T1 - Opportunistic packet scheduling and media access control for wireless LANs and multi-hop ad hoc networks
AU - Wang, Jianfeng
AU - Zhai, Hongqiang
AU - Fang, Yuguang
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2004
Y1 - 2004
N2 - In the wireless LANs or mobile ad hoc networks, a node with multi-packets in its queue waiting for delivery to several neighboring nodes may choose to schedule a candidate receiver with good channel condition for transmission. By choosing a receiver with good channel condition, the Head-of-Line (HOL) blocking problem can be alleviated and the overall system throughput can be increased. Motivated by this observation, we introduce the Opportunistic packet Scheduling and Media Access control (OSMA) protocol to exploit high quality channel condition under certain fairness constraints. We base our design on CSMA/CA so that it can be simply incorporated into the 802.11 standard.The key mechanisms of OSMA protocol are multicast RTS and priority-based CTS. In the OSMA protocol, RTS includes a list of candidate receivers. Among those who are qualified to receive data, the one with the highest order would be granted to catch the channel by replying CTS in the first place. The ordering list will be updated dynamically according to certain scheduling policy such as Round Robin (RR) and Earlier timestamp First (ETF), so other performance metrics, e.x., fairness and timeliness, can be enhanced. To the best of our knowledge, this is the first paper to exploit the multiuser diversity in the CSMA/CA based wireless networks. We evaluate the OSMA using ns-2 and our simulation results show that this protocol can improve the network throughput significantly.
AB - In the wireless LANs or mobile ad hoc networks, a node with multi-packets in its queue waiting for delivery to several neighboring nodes may choose to schedule a candidate receiver with good channel condition for transmission. By choosing a receiver with good channel condition, the Head-of-Line (HOL) blocking problem can be alleviated and the overall system throughput can be increased. Motivated by this observation, we introduce the Opportunistic packet Scheduling and Media Access control (OSMA) protocol to exploit high quality channel condition under certain fairness constraints. We base our design on CSMA/CA so that it can be simply incorporated into the 802.11 standard.The key mechanisms of OSMA protocol are multicast RTS and priority-based CTS. In the OSMA protocol, RTS includes a list of candidate receivers. Among those who are qualified to receive data, the one with the highest order would be granted to catch the channel by replying CTS in the first place. The ordering list will be updated dynamically according to certain scheduling policy such as Round Robin (RR) and Earlier timestamp First (ETF), so other performance metrics, e.x., fairness and timeliness, can be enhanced. To the best of our knowledge, this is the first paper to exploit the multiuser diversity in the CSMA/CA based wireless networks. We evaluate the OSMA using ns-2 and our simulation results show that this protocol can improve the network throughput significantly.
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-4544288378&origin=recordpage
U2 - 10.1109/wcnc.2004.1311365
DO - 10.1109/wcnc.2004.1311365
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0780383443
SN - 9780780383449
VL - 2
T3 - 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
SP - 1234
EP - 1239
BT - 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
T2 - 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
Y2 - 21 March 2004 through 25 March 2004
ER -