A Power-Saving Protocol for Ad Hoc Networks
To extend the usage scope of an 802.11DCF based wireless LAN power-saving protocol 802.11PS to a multi-hop mobile environment, a modified protocol called 802.11NPS is proposed. It uses a packet-driven dynamic switching-off mechanism on the wireless network interface card to save power. By delaying the switching-off operations for a certain period of time after nodes receiving unrelated control packets, 802.11NPS can support the upper layer routing protocol excellently and thus can be used in multi-hop ad hoc networks. It also can be used in fully connected networks. By using a more accurate power-consumption model, the performance of 802.11NPS is studied through simulation. Results show that in a WLAN environment, 802.11NPS can save power by more than 60％ as compared with 802.11DCF; while in a multi-hop mobile environment, 802.11NPS can save power by 18％. At the meanwhile, its delay performance is better than that of 802.11DCF and the throughput is still similar.
802.11NPS network interface card (NIC) ad hoc network medium access control power-saving
Li Ning Xu Yan Xie Shengli
College of Electronics & Information, South China University of Technology, Guangzhou 510640, China; Guangzhou Communication Research Institute, Guangzhou 510310, China College of Electronics & Information, South China University of Technology, Guangzhou 510640, China
国际会议
武汉
英文
808-811
2005-09-23（万方平台首次上网日期，不代表论文的发表时间）