Title of article :
QoS for wireless sensor networks: Enabling service differentiation at the MAC sub-layer using CoSenS
Author/Authors :
Bilel Nefzi، نويسنده , , Ye-Qiong Song، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2012
Pages :
16
From page :
680
To page :
695
Abstract :
Providing service differentiation in wireless sensor networks while proposing simple and highly scalable solution is a challenging problem. We retain the use of CSMA/CA as access protocol because of its simplicity, versatility and good scalability properties. We developed CoSenS, a Collect then Send burst Scheme, on top of it to address its weaknesses while facilitating the implementation of scheduling policies. In this article, we propose a simple and scalable service differentiation solution; we implement fixed priority and earliest deadline first on top of CoSenS. The simulation analysis shows that our solution self-adapts to the traffic variation and greatly enhances end-to-end delay, reliability and deadline meet ratio for urgent traffic while not degrading best effort traffic compared to IEEE 802.15.4 original protocol and IEEE 802.15.4 implementing these scheduling policies. Additionally, CoSenS is implemented and tested on motes. The real experimentation results validated our simulation analysis.
Keywords :
CSMA/CA , MAC protocols , Wireless sensor networks , Scheduling , QoS
Journal title :
Ad Hoc Networks
Serial Year :
2012
Journal title :
Ad Hoc Networks
Record number :
968729
Link To Document :
بازگشت