On global channel state estimation and dissemination in ring networks
Shahab Farazi, Donald R. Brown, Andrew G. Klein · 2016
This paper studies global channel state information (CSI) in time-slotted wireless ring networks with time-varying reciprocal channels. Lower bounds on maximum and average staleness of global CSI are derived, and efficient protocols that achieve the bounds are developed. Two extreme scenarios are considered with either (i) one node transmitting at a time or (ii) the maximum number of nodes transmitting at a time without collisions. In addition, the amount of CSI disseminated per packet is varied between two extremes. Simulation results confirm the analysis and quantify staleness in terms of the network parameters.