Opportunistic coding across on‐route dominating nodes in a flow‐oriented SDN enabled WSN

Abstract

SummaryWith the aid of network coding, numerous packets can be mixed at intermediary nodes if any encoding opportunity exists. However, it is challenging to choose intermediate relay nodes of probable opportunistic coding in distributed wireless networks. In this work, a wireless sensor network (WSN) is employed with a software defined network (SDN) architecture along with a connected dominating set (CDS)‐based routing technique. The SDN offers a centrally managed architecture that lowers energy usage and network traffic by reducing the controlling and managing overheads in sensory networks. In addition, the CDS‐based routing and the potential for opportunistic coding at dominant nodes are coupled to enhance network performance. The proposed CDS‐based flow‐oriented coding‐aware energy‐efficient routing (CFCER) is contrasted with existing traditional wireless sensor networks and software‐defined sensor networks in terms of throughput, packet delay, and energy usage. CFCER increases network throughput by 15% more than SDN‐based WSN and by about 25% more than traditional WSN. However, compared to standard WSN, a significant improvement was made in packet delay and energy conservation. Over SDN‐WSN, packet delay is reduced by about 18%, and the energy consumption is cut by 10%.