Energy-conserving selective repeat ARQ protocols for wireless data networks

Mobile communications implies reliance on a self-contained, portable power source, error-prone fading radio channels and subsequent need for acknowledgments. We propose two energy-conserving variants of the selective repeat ARQ protocol, which reduce the number of acknowledgments sent by the mobile node. The protocols are compared to previously described energy-conserving go-back-N ARQ protocols as well as classical approaches and shown to maintain favorable delay and throughput performances.