TY - GEN
T1 - Congestion-aware network-coding-based opportunistic routing in wireless ad hoc networks
AU - Chung, Kun Cheng
AU - Chen, Hsin Chun
AU - Liao, Wanjiun
PY - 2011
Y1 - 2011
N2 - In this paper, we propose a congestion-aware network-coding-based opportunistic routing mechanism called CONCOR for wireless ad hoc networks. An existing mechanism called MORE shows good throughput in the single flow case; however, it suffers significant performance degradation in scenarios with multiple traffic flows due to the redundant transmission problem and the unbalanced load problem. To tackle these two problems, our proposed CONCOR contains two key components, namely, null space feedback and rank differential, which allows feedback of the received random network coding information with minimal overhead among neighboring nodes and enables a backpressure policy to balance the load along the path. The simulation results show that CONCOR outperforms MORE in all cases, even in the single flow scenario. Specifically, compared with MORE, CONCOR has better throughput due to fewer redundant transmissions and more equitable treatment of multiple competing flows.
AB - In this paper, we propose a congestion-aware network-coding-based opportunistic routing mechanism called CONCOR for wireless ad hoc networks. An existing mechanism called MORE shows good throughput in the single flow case; however, it suffers significant performance degradation in scenarios with multiple traffic flows due to the redundant transmission problem and the unbalanced load problem. To tackle these two problems, our proposed CONCOR contains two key components, namely, null space feedback and rank differential, which allows feedback of the received random network coding information with minimal overhead among neighboring nodes and enables a backpressure policy to balance the load along the path. The simulation results show that CONCOR outperforms MORE in all cases, even in the single flow scenario. Specifically, compared with MORE, CONCOR has better throughput due to fewer redundant transmissions and more equitable treatment of multiple competing flows.
KW - congestion-aware, wireless ad hoc netowkrs
KW - network coding
KW - opportunistic routing
UR - http://www.scopus.com/inward/record.url?scp=84863136828&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84863136828&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2011.6133735
DO - 10.1109/GLOCOM.2011.6133735
M3 - Conference contribution
AN - SCOPUS:84863136828
SN - 9781424492688
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - 2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
T2 - 54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
Y2 - 5 December 2011 through 9 December 2011
ER -