Name
Title | ||
|---|---|---|
Energy-efficient medium access for wireless sensor networks under slow fading conditions |
Abstract | ||
|---|---|---|
In this work, we first study and then propose an optimal version on the medium access control mechanism known as carrier sense multiple access with collision avoidance (CSMA/CA). This protocol is adopted by many wireless communication standards, such as the IEEE 802.11 series and IEEE 802.15.4 (ZigBee). We first identify its drawbacks in a slow fading channel environment, and show that the CSMA/CA can be very energy-inefficient, especially in many wireless sensor network (WSN) applications where the traffic demand is low. In particular, we study communication over a Rayleigh fading channel, which we model by means of a time invariant Markov process. We then show that the decision regarding the optimal access time on such a channel can be formulated as an optimization problem, and that an optimal solution can be accurately derived. We also simulate a ZigBee node in a Rayleigh fading environment and the result shows that optimum channel access can save significant amount of energy compared to conventional CSMA/CA. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.4108/ICST.BROADNETS2009.7554 | 2009 Sixth International Conference on Broadband Communications, Networks, and Systems |
Keywords | Field | DocType |
energy-efficient medium access control mechanism,wireless sensor network,slow fading channel environment,carrier sense multiple access,collision avoidance,CSMA/CA,wireless communication standard,IEEE 802.11,IEEE 802.15.4,ZigBee,WSN,traffic demand,Rayleigh fading channel,time invariant Markov process model,optimal channel access time,optimization problem | Multiple Access with Collision Avoidance for Wireless,Rayleigh fading,IEEE 802.11,Fading,Computer science,Computer network,Hidden node problem,Carrier sense multiple access with collision avoidance,Channel access method,Channel state information | Conference |
Volume | Issue | ISSN |
null | null | null |
Citations | PageRank | References |
2 | 0.36 | 2 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Changmian Wang | 1 | 2 | 0.36 |
| Liuguo Yin | 2 | 77 | 18.20 |
| Geir Egil Øien | 3 | 2 | 0.36 |