Mobile Networks and Applications

, Volume 10, Issue 1, pp 169–181

Quorum-Based Asynchronous Power-Saving Protocols for IEEE 802.11 Ad Hoc Networks

  • Jehn-Ruey Jiang
  • Yu-Chee Tseng
  • Chih-Shun Hsu
  • Ten-Hwang Lai

DOI: 10.1023/B:MONE.0000048553.45798.5e

Cite this article as:
Jiang, J., Tseng, Y., Hsu, C. et al. Mobile Networks and Applications (2005) 10: 169. doi:10.1023/B:MONE.0000048553.45798.5e


This paper investigates the power mode management problem for an IEEE 802.11-based mobile ad hoc network (MANET) that allows mobile hosts to tune to the power-saving (PS) mode. There are two major issues that need to be addressed in this problem: (a) wakeup prediction and (b) neighbor discovery. The former is to deliver buffered packets to a PS host at the right time when its radio is turned on. The latter is to monitor the environment change under a mobile environment. One costly, and not scalable, solution is to time-synchronize all hosts. Another possibility is to design asynchronous protocols as proposed by Tseng et al. in [25]. In this paper, we adopt the latter approach and correlate this problem to the quorum system concept. We identify a rotation closure property for quorum systems. It is shown that any quorum system that satisfies this property can be translated to an asynchronous power-saving protocol for MANETs. Thus, the result bridges the classical quorum system design problem in the area of distributed systems to the power mode management problem in the area of mobile ad hoc networks. We derive a lower bound for quorum sizes for any quorum system that satisfies the rotation closure property. We identify a group of quorum systems that are optimal or near optimal in terms of quorum sizes, which can be translated to efficient asynchronous power-saving protocols. We also propose a new e-torus quorum system, which can be translated to an adaptive protocol that allows designers to trade hosts' neighbor sensibility for power efficiency. Simulation experiments are conducted to evaluate and compare the proposed protocols.

IEEE 802.11distributed systemmobile ad hoc network (MANET)power managementquorum systemwireless communication

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Jehn-Ruey Jiang
    • 1
  • Yu-Chee Tseng
    • 2
  • Chih-Shun Hsu
    • 3
  • Ten-Hwang Lai
    • 4
  1. 1.Department of Information ManagementHsuan-Chuang UniversityTaiwan
  2. 2.Department of Computer Science and Information EngineeringNational Chiao-Tung UniversityTaiwan
  3. 3.Department of Computer Science and Information EngineeringNational Central UniversityTaiwan
  4. 4.Department of Computer and Information ScienceThe Ohio State University ColumbusUSA