TY - GEN
T1 - Knowledge-based exponential backoff scheme in IEEE 802.15.4 MAC
AU - Woo, Sinam
AU - Park, Woojin
AU - Ahn, Sae Young
AU - An, Sunshin
AU - Kim, Dongho
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - In wireless personal area network, a channel is shared by a number of nodes. Therefore packet collision may take place and it degrades the throughput performance. To improve the throughput of slotted CSMA/CA in IEEE 802.15.4, we propose knowledge-based exponential backoff (KEB) scheme for enhancing channel utilization solely based on the locally available channel state information. In addition, we propose an analytical model of slotted channel access mechanism with finite retry and derive the theoretical throughput limit. In simulation experiments, we show that the existing MAC scheme, binary exponential backoff (BEB) scheme, operates very far from the theoretical limits due to increased time for negotiating channel access. Also performance results indicate that KEB shows significant improvement in throughput performance over BEB with the knowledge of the network status.
AB - In wireless personal area network, a channel is shared by a number of nodes. Therefore packet collision may take place and it degrades the throughput performance. To improve the throughput of slotted CSMA/CA in IEEE 802.15.4, we propose knowledge-based exponential backoff (KEB) scheme for enhancing channel utilization solely based on the locally available channel state information. In addition, we propose an analytical model of slotted channel access mechanism with finite retry and derive the theoretical throughput limit. In simulation experiments, we show that the existing MAC scheme, binary exponential backoff (BEB) scheme, operates very far from the theoretical limits due to increased time for negotiating channel access. Also performance results indicate that KEB shows significant improvement in throughput performance over BEB with the knowledge of the network status.
KW - Backoff
KW - IEEE 802.15.4
KW - MAC
KW - Markov model
KW - Throughput
UR - http://www.scopus.com/inward/record.url?scp=58049108693&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58049108693&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-89524-4-44
DO - 10.1007/978-3-540-89524-4-44
M3 - Conference contribution
AN - SCOPUS:58049108693
SN - 354089523X
SN - 9783540895237
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 435
EP - 444
BT - Information Networking
T2 - 21st International Conference on Information Networking, ICOIN 2007
Y2 - 23 January 2007 through 25 January 2007
ER -