Improving IEEE 802.11 power saving mechanism

This paper presents an optimization of the power saving mechanism in the Distributed Coordination Function (DCF) in an Independent Basic Service Set (IBSS) of the IEEE 802.11 standard. In the 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. 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, the IEEE 802.11 DCF mode requires nodes to stay awake either for the entire beacon interval following the ATIM window or not 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.

[1]  Vaduvur Bharghavan,et al.  A power controlled multiple access protocol for wireless packet networks , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[2]  Leandros Tassiulas,et al.  Energy conserving routing in wireless ad-hoc networks , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[3]  Deborah Estrin,et al.  Geography-informed energy conservation for Ad Hoc routing , 2001, MobiCom '01.

[4]  Yu-Chee Tseng,et al.  Power-saving protocols for IEEE 802.11-based multi-hop ad hoc networks , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[5]  Adam Wolisz,et al.  Power-saving mechanisms in emerging standards for wireless LANs: the MAC level perspective , 1998, IEEE Wirel. Commun..

[6]  Michele Zorzi,et al.  Is TCP energy efficient? , 1999, 1999 IEEE International Workshop on Mobile Multimedia Communications (MoMuC'99) (Cat. No.99EX384).

[7]  Leo Monteban,et al.  WaveLAN®-II: A high-performance wireless LAN for the unlicensed band , 1997, Bell Labs Technical Journal.

[8]  Paul J.M. Havinga,et al.  Energy-efficient TDMA medium access control protocol scheduling , 2000 .

[9]  Martin Nilsson,et al.  Investigating the energy consumption of a wireless network interface in an ad hoc networking environment , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[10]  Rong Zheng,et al.  On-demand power management for ad hoc networks , 2003, IEEE INFOCOM 2003. Twenty-second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37428).

[11]  A. M. Abdullah,et al.  Wireless lan medium access control (mac) and physical layer (phy) specifications , 1997 .

[12]  S. M. Heemstra de Groot,et al.  Power-aware routing in mobile ad hoc networks , 1998, MobiCom '98.

[13]  Suresh Singh,et al.  An Experimental Study of TCP’s Energy Consumption over a Wireless Link , 2001 .

[14]  Giovanni De Micheli,et al.  Energy efficient design of portable wireless systems , 2000, ISLPED'00: Proceedings of the 2000 International Symposium on Low Power Electronics and Design (Cat. No.00TH8514).

[15]  Rong Zheng,et al.  On-demand power management for ad hoc networks , 2005, Ad Hoc Networks.

[16]  Deborah Estrin,et al.  An energy-efficient MAC protocol for wireless sensor networks , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[17]  Juan-Carlos Cano,et al.  Evaluating the energy-consumption reduction in a MANET by dynamically switching-off network interfaces , 2001, Proceedings. Sixth IEEE Symposium on Computers and Communications.

[18]  Laura Marie Feeney,et al.  An Energy Consumption Model for Performance Analysis of Routing Protocols for Mobile Ad Hoc Networks , 2001, Mob. Networks Appl..

[19]  Chita R. Das,et al.  An adaptive power-conserving service discipline for Bluetooth , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[20]  Randy H. Katz,et al.  Measuring and Reducing Energy Consumption of Network Interfaces in Hand-Held Devices (Special Issue on Mobile Computing) , 1997 .

[21]  W. J. Klepczynski,et al.  GPS: primary tool for time transfer , 1999, Proc. IEEE.

[22]  Krishna M. Sivalingam,et al.  Low power link and access protocols for wireless multimedia networks , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[23]  Chatschik Bisdikian,et al.  An overview of the Bluetooth wireless technology , 2001, IEEE Commun. Mag..

[24]  Mahmoud Naghshineh,et al.  Power-aware routing in wireless packet networks , 1999, 1999 IEEE International Workshop on Mobile Multimedia Communications (MoMuC'99) (Cat. No.99EX384).

[25]  Matthew J. Miller,et al.  Improving Power Save Protocols Using Carrier Sensing and Busy-Tones for Dynamic Advertisement Windows ∗ Technical Report December 2004 , 2005 .

[26]  Michele Zorzi,et al.  Energy efficiency of media access protocols for mobile data networks , 1998, IEEE Trans. Commun..

[27]  Young-Bae Ko,et al.  Enhanced Power Saving Scheme for IEEE 802.11 DCF Based Wireless Networks , 2003, PWC.

[28]  Wendi Heinzelman,et al.  Proceedings of the 33rd Hawaii International Conference on System Sciences- 2000 Energy-Efficient Communication Protocol for Wireless Microsensor Networks , 2022 .

[29]  Robert Tappan Morris,et al.  Span: An Energy-Efficient Coordination Algorithm for Topology Maintenance in Ad Hoc Wireless Networks , 2001, MobiCom '01.

[30]  Mario Gerla,et al.  Rendezvous scheduling in Bluetooth scatternets , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[31]  Robin Kravets,et al.  Application‐driven power management for mobile communication , 2000, Wirel. Networks.

[32]  Nitin H. Vaidya,et al.  An energy efficient MAC protocol for wireless LANs , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.