A new medium access control (MAC) protocol to handle packet collisions is proposed. Different from traditional MAC protocols, where only one-step reservation is considered, we propose a multiple-step distributed in-band channel reservation, called m-DIBCR, where m represents the number of steps we consider in the channel reservation. In the protocol, each node maintains m timers, each of which serves as the backoff timer for one of the next m packets to be sent. A node broadcasts the initial values of these timers by piggybacking them in the data packet, and simultaneous transmissions can be avoided when its neighboring nodes overhear these values. Extensive simulations show that, compared with one-step channel reservation, throughput can be dramatically improved by multiple-step channel reservation, especially in networks with high transmission error probabilities and/or a large number of contending nodes.
[1]
Sunil Kumar,et al.
Medium Access Control protocols for ad hoc wireless networks: A survey
,
2006,
Ad Hoc Networks.
[2]
Zhihui Chen,et al.
A channel reservation procedure for fading channels in wireless local area networks
,
2005,
IEEE Transactions on Wireless Communications.
[3]
Scott F. Midkiff,et al.
A real-time medium access control protocol for ad hoc wireless local area networks
,
1999,
MOCO.
[4]
Sunghyun Choi,et al.
EBA: an enhancement of the IEEE 802.11 DCF via distributed reservation
,
2005,
IEEE Transactions on Mobile Computing.
[5]
Feng Guang-zeng.
IEEE Standard 802.16
,
2005
.