Title :
Performance analysis on a new MAC DT-CSMA
Author :
Yang, Dong ; Gidlund, Mikael ; Xu, Youzhi
Author_Institution :
Beijing Jiaotong Univ., Beijing, China
Abstract :
TDMA has been resumed for industrial wireless sensor network (IWSN) like WirelessHART and ISA 100.11a recently, because TDMA is suitable for periodic traffic which is predictable to pre-assign. However, for random traffic TDMA degenerates to inefficient slotted ALOHA. In our previous work, we propose a new medium access control (MAC) scheme called discrete-time CSMA (DT-CSMA) that can be applied to improve the efficiency of TDMA-based system that transmits periodic and random traffic. In this paper, we give a model to evaluate system throughput for DT-CSMA. An analysis of typical scenario shows DT-CSMA improves the throughput by 100%. We also build a model to evaluate synchronization influence on DT-CSMA, which indicates that the influence is limited.
Keywords :
access protocols; carrier sense multiple access; telecommunication traffic; time division multiple access; wireless sensor networks; ALOHA; ISA 100.11a; MAC DT-CSMA; discrete-time CSMA; industrial wireless sensor network; medium access control scheme; performance analysis; periodic traffic; random traffic TDMA-based system; wireless HART; Algorithm design and analysis; IEEE 802.15 Standards; Scheduling; Synchronization; Throughput; Time division multiple access;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119879
