Adaptive Cooperative ARQ Based on GOP Fetching Frame and Hop Count
Guangwei Bai · Jisuanji gongcheng · 2012
This paper proposes an adaptive cooperative Automatic Repeat request(ARQ) mechanism based on cross-layer design for Wireless Multimedia Sensor Network(WMSN),in the hope that the QoS guarantee of data transmission can be greatly improved.The hops of data packets are adjusted adaptively according to the characteristics of the energy consumption with communication distance of the cooperative ARQ.The mechanism adaptively adjusts the maximum retransmission time according to the hops of data packets.The GOP fetching frame model based on the fast forward/backward rate is proposed.Analysis result shows that the proposed mechanism can obtain better quality of multimedia data transmission than traditional ARQ,in terms of frame rate,reliability,real-time performance.