TY - JOUR
T1 - Towards a Realistic Primary Users' Behavior in Single Transceiver Cognitive Networks
AU - Dinis, Rui Miguel Henriques Dias Morgado
AU - Oliveira, Rodolfo Alexandre Duarte
AU - Bernardo, Luís Filipe Lourenço
AU - DEE Group Author
PY - 2013/1/1
Y1 - 2013/1/1
N2 - This letter presents new results obtained with a novel MAC scheme designed to be reliable and maximize the throughput of a single-hop network. Contrarily to the IEEE 802.11 MAC scheme, all nodes adopt a common optimal contention window size for unicast and broadcast transmissions, which is based on a common view of the channel. In this way, the conditional collision probability is independent of the type of traffic (broadcast or unicast). Simulation results for different amounts of broadcast/unicast traffic indicate that our approach significantly outperforms IEEE 802.11, exhibiting broadcast aggregate throughput gains up to 40%. Moreover, the simulation results indicate that the probability of successful transmitting a broadcast frame can be also improved up to 50% and, as the number of nodes increase, broadcast frames can obtain approximately the same reliability and throughput achieved by IEEE 802.11 unicast frames.
AB - This letter presents new results obtained with a novel MAC scheme designed to be reliable and maximize the throughput of a single-hop network. Contrarily to the IEEE 802.11 MAC scheme, all nodes adopt a common optimal contention window size for unicast and broadcast transmissions, which is based on a common view of the channel. In this way, the conditional collision probability is independent of the type of traffic (broadcast or unicast). Simulation results for different amounts of broadcast/unicast traffic indicate that our approach significantly outperforms IEEE 802.11, exhibiting broadcast aggregate throughput gains up to 40%. Moreover, the simulation results indicate that the probability of successful transmitting a broadcast frame can be also improved up to 50% and, as the number of nodes increase, broadcast frames can obtain approximately the same reliability and throughput achieved by IEEE 802.11 unicast frames.
KW - MAC Perfor- mance Evaluation
KW - Broadcast/Unicast traffic.
KW - Reliability
KW - MAC Optimization
U2 - 10.1109/LCOMM.2012.121912.122175
DO - 10.1109/LCOMM.2012.121912.122175
M3 - Article
VL - 17
SP - 309
EP - 312
JO - IEEE Communications Letters
JF - IEEE Communications Letters
SN - 1089-7798
IS - 2
ER -