Dual-Message Compression with Variable Null Symbol Incorporation on Constrained Optimization-Based Multipath and Multihop Routing in WSN

Majumder, Pratham Majumder, Tuhin Chatterjee, Punyasha Shrestha, SunroseMajority of the energy-aware routing protocols for wireless sensor networks focus on hierarchical routing mechanism which is having major drawback of rapid depletion of battery life of sensor nodes near the sink due to uneven distribution of packets. To mitigate the adverse effect of improper packet distribution policy flowing toward cluster head, we have introduced a novel packet distribution policy with constrained optimization problem foundation, so that powers at all nodes are uniformly dissipated. Our analysis shows, for a nonlinear network, this optimization strategy can be effectively employed for a 1D nonlinear network with three parallel paths consisting of five nodes. Additionally, we have incorporated our established source coding scheme known as dual-message compression with variable null symbol (DCVNS) followed by the concept of silent communication. This scheme reduces the duration of most energy-consuming active state of sensor node and also reduces receiver energy by reducing the length of the encoded message, which eventually reduces overall communication time. Simulation result on real-life sensor dataset with commercially available low-cost and low-power devices, e.g., CC1100 and Maxim 2820 shows our proposed approach outperforms in all aspects of transmission energy profile with the existing schemes.