Cooperative diversity has gained much interest due to its ability to mitigate multipath fading without using multiple antennas. There has been considerable research on cooperative transmission discussing how cooperation can improve the performance of the physical layer. During the last few years, researchers have also started to take into consideration cooperative transmission in routing. However, all proposed cooperative routing algorithms in the literature do not take packet collision into account. In this paper, we propose a cross-layer cooperative routing algorithm for minimizing the collision probability subject to the end-to-end outage probability constraint in wireless sensor networks. We develop a collision minimization algorithm by combining cooperative transmission, optimal power allocation, and route selection. The proposed cooperative routing algorithm, called Minimum Collision Cooperative Routing (MCCR), selects the route that causes minimum collision probability to other nodes in the network. Results show that MCCR can significantly reduce the collision probability while keeping the outage probability below the targeted value.
['Fatemeh Mansourkiaie', 'Mohammed Hossam Ahmed']
Cooperative routing for collision probability minimization in wireless sensor networks