An energy efficient MAC protocol for wireless LANs
Proceedings - IEEE INFOCOM - Tập 3 - Trang 1756-1764 vol.3
Tóm tắt
This paper presents an optimization of the power saving mechanism in the Distributed Coordination Function (DCF) in the IEEE 802.11 standard. In the IEEE 802.11 power saving mode specified for DCF, time is divided into so-called beacon intervals. At the start of each beacon interval, each node in the power saving mode periodically wakes up for a duration called the ATIM window. The nodes are required to be synchronized to ensure that all nodes wake up at the same time. During the ATIM window, the nodes exchange control packets to determine whether they need to stay awake for the rest of the beacon interval. The size of the ATIM window has a significant impact on energy saving and throughput achieved by the nodes. This paper proposes an adaptive mechanism to dynamically choose a suitable ATIM window size. We also allow the nodes to stay awake for only a fraction of the beacon interval following the ATIM window. On the other hand, IEEE 802.11 DCF mode requires the nodes to stay awake either for the entire beacon interval following the ATIM window or none at all. Simulation results show that the proposed approach outperforms the IEEE 802.11 power saving mechanism in terms of throughput and the amount of energy consumed.
Từ khóa
#Energy efficiency #Media Access Protocol #Wireless application protocol #Wireless LAN #Local area networks #Access protocols #Energy consumption #USA Councils #Throughput #BatteriesTài liệu tham khảo
10.1109/5.736348
10.1109/HICSS.2000.926982
stemm, 1997, Measuring and reducing energy consumption of network interfaces in hand-held devices, IEICE Trans Commun Special Issue Mobile Comput, e80 b, 1125
simunic, 2000, energy efficient design of portable wireless systems, ISLPED 00 the 2000 International Symposium on Low Power Electronics and Design (Cat No 00TH8514) LPE-00, 49, 10.1109/LPE.2000.155252
10.1145/381677.381686
0, The CMU monarch project's wireless and mobility extensions to NS
havinga, 0, Energy-efficient TDMA medium access control protocol scheduling, Proc Asian International Mobile Computing Conference (AMOC 2000) Nov 2000
0, IEEE802 11 WaveLAN PC Card - User's Guide Pp A-1
1997, Wireless Lan Medium Access Control (Mac) and Physical Layer (Phy) Specification
10.1002/bltj.2069
10.1109/MOMUC.1999.819490
kravets, 0, Application-driven power management for mobile communication, ACM/URSI/Baltzer Wireless Networks (WINET) 1999
10.1109/ISCC.2001.935373
gomez, 0, PARO: Power-aware routing in wireless packet networks, Proc 6th IEEE International Workshop on Mobile Multimedia Communications (MoMuC99) Nov 1999
10.1109/98.683738
chang, 0, Energy conserving routing in wireless ad-hoc network, INFOCOM 2000 March 2000
10.1145/381677.381685
agrawal, 0, An experimental study of TCP's energy consumption over a wireless link, 4th European Personal Mobile Communications Conference Feb 2001
10.1109/VETEC.1997.605397
10.1109/26.729382
singh, 0, Power-aware routing in mobile ad hoc networks, MOBICOM '98 Oct 1998
feeney, 0, An energy-consumtion model for performance analysis of routing protocols for mobile ad hoc networks, Baltzer/ACM Journal of Mobile Networks and Applications (MONET) Special Issue on "QoS in Heterogeneous Wireless Networks" Jun 2001
10.1109/INFCOM.2001.916651
10.1109/INFCOM.2001.916704