Link-Correlation-Aware Opportunistic Routing with EEC for Effective Packet Recovery

Abstract

Packet loss is a serious problem in the wireless networks which use conventional store-and-forward design. This paper proposes a link-correlation-aware Opportunistic routing with EEC. It provides various error recovery strategies with respect to reliability, stability, and energy consumption constraints. Here the error correction process is performed in a distributed manner where selected intermediate nodes participate in error recovery. The EEC scheme effectively detects the errors in the packet recovery so that the errors can be corrected and packet recovery can be efficient with very low latency. The use of opportunistic routing can reduce the decoding delay and reduces the packet delay by forwarding the incoming packets without waiting for the packet sent by its previous receiver to decode it. However, inappropriate assumption in opportunistic routing cause serious estimation errors in the forwarder set selection resulting in further increase in scheduling costs. The link-correlation-aware opportunistic routing overcomes the estimation errors in the forwarder set selection and reduces the scheduling costs. The proposed method is better with low latency recovery and achieves high reliability and stability.