Paper Info
Title
A Traffic Adaptive Multi-Channel MAC Protocol with Dynamic Slot Allocation for WSNs.
Abstract
Using low duty-cycle is the most common technique to extend the system lifetime in WSNs. However, it also implies limited throughput and long delay and the penalty is even higher under variable traffic patterns. In this paper, we present iQueue-MAC, a hybrid CSMA/TDMA MAC that adapts to variable/bursty traffic. With light load, iQueue-MAC uses a contention-based CSMA mechanism that provides low delay with scattered transmissions. When traffic increases, detected by a forming backlog in the sender, iQueue-MAC changes to a contention-free TDMA mechanism allocating transmission slots. Thus, iQueue-MAC mitigates packet buffering and reduces packet delay, combining the best of TDMA and CSMA. In this paper we also show how iQueue-MAC can operate in both single and multi channel modes. We implemented it on SIM32W108 chips together with other reference WSN protocols for comparison. iQueue-MAC exhibits similar figures during light traffic. However, with bursty traffic its throughput can be five times that of CoSenS and Ri-MAC-MC and its delay 20 times lower. Finally, iQueue-MAC is able to effectively use multiple channels, duplicating its throughput when compared to single channel operation.
Year
DOI
Venue
2016
10.1109/TMC.2015.2473852
IEEE Trans. Mob. Comput.
Keywords
Field
DocType
Time division multiple access,Wireless sensor networks,Routing protocols,Media Access Protocol,Resource management
Media access control,Computer science,Network packet,Communication channel,Computer network,Real-time computing,Throughput,Time division multiple access,Wireless sensor network,Channel access method,Routing protocol
Journal
Volume
Issue
ISSN
15
7
1536-1233
Citations 
PageRank 
References 
16
0.62
21
Authors
5
Name
Order
Citations
PageRank
Shuguo Zhuo1573.12
Zhibo Wang278679.49
Yeqiong Song332136.87
Zhibo Wang4160.62
Luís Almeida521216.20