Abstract:
This paper presents a peer conscious opportunistic
network coded cooperation (PC-O-NCC) system that exploits
multi-user diversity (MUD) gain in a simple network coded
cooperation (NCC) based network. It prioritizes sources with
better channel conditions by granting them earlier access than the
other competing nodes unlike the prevalent time division multiple
access (TDMA) technique used widely in any NCC network.
This improves the outage performance of the overall system.
To prioritise sources with better channel conditions, a novel
timer-based MAC protocol is proposed. The proposed protocol
is designed such that it aims to reduce collisions by taking
the network load into account along with channel conditions
while generating the timer values. It also minimizes the power
consumption in performing clear channel assessment (CCA) by
sources which is a costly affair for battery-operated devices. The
simulation results show that the proposed algorithm improves
the outage performance while keeping the latency to a minimum
value. The improvement in the outage performance can prove
to be important in taking key decisions which becomes crucial
in disaster management, drone assisted scenarios or intelligent
transportation systems.
