Title :
Analysis and improvement of contention access protocol in IEEE 802.15.4 star network
Author :
Patro, Ranjeet K. ; Raina, Manik ; Ganapathy, Viswanath ; Shamaiah, Manohar ; Thejaswi, Chandrashekhara
Author_Institution :
Nat. Univ. of Singapore, Singapore
Abstract :
The wireless standard IEEE 802.15.4 is emerging as a key enabling technology for different wireless sensor network applications. IEEE802.15.4 supports a low data rate wireless sensor network with low power requirement. In this paper, we discuss the performance analysis of IEEE 802.15.4 MAC assuming star topology in the beacon enabled mode. We obtain analytical expressions for channel sensing probabilities and saturation throughput during the contention access period. We have included the packet discard analysis and validated the analytical expressions for these parameters using ns-2 simulation. Further, we also discuss the performance analysis of the MAC when the contention access mechanism of IEEE 802.15.4 is modified to have only one channel sensing. Finally, we discuss adaptation of the frame length for the case with one channel sensing.
Keywords :
IEEE standards; access protocols; telecommunication network topology; telecommunication standards; wireless channels; wireless sensor networks; IEEE 802.15.4 MAC; IEEE 802.15.4 star network; channel sensing probabilities; contention access period; contention access protocol; ns-2 simulation; packet discard analysis; performance analysis; star topology; wireless sensor network; wireless standard IEEE 802.15.4; Access protocols; Analytical models; Computer networks; Monitoring; Network topology; Peer to peer computing; Performance analysis; Physical layer; Throughput; Wireless sensor networks;
Conference_Titel :
Mobile Adhoc and Sensor Systems, 2007. MASS 2007. IEEE International Conference on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-1454-3
Electronic_ISBN :
978-1-4244-1455-0
DOI :
10.1109/MOBHOC.2007.4428628
