In this paper, we propose an opportunistic buffered decode-wait-and-forward (OBDWF) protocol to exploit both relay buffering and relay mobility to enhance the system throughput and the end-to-end packet delay under bursty arrivals. We consider a point-to-point communication link assisted by mobile relays. We illustrate that the OBDWF protocol could achieve a better throughput and delay performance compared with existing baseline systems such as the conventional dynamic decode-andforward (DDF) and amplified-and-forward (AF) protocol. In addition to simulation performance, we also derived closed-form asymptotic throughput and delay expressions of the OBDWF protocol. Specifically, the proposed OBDWF protocol achieves an asymptotic throughput Θ(log 2 ) with Θ(1) total transmit power in the relay network. This is a significant gain compared with the best known performance in conventional protocols (Θ(log 2 ) throughput with Θ( ) total transmit power). With bursty arrivals, we show that both the stability region and average delay of the proposed OBDWF protocol can achieve order-wise performance gain Θ( ) compared with conventional DDF protocol. Index Terms-Relay networks, mobile relays, opportunistic buffered decode-wait-and-forward (OBDWF) protocol, queueing theory.
OBDWF protocol as established in REF attain a enhanced throughput and delay performance such as the conservative dynamic decode-and forward (DDF) and amplified-and forward (AF) protocol.
Opportunistic Buffered Decode-Wait-and-Forward (OBDWF) Protocol for Mobile Wireless Relay Networks
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Mathematics Computer Science