International Journal of Engineering Sciences & Research Technology (IJESRT)
Unbalanced energy consumption is an inherent problem in wireless sensor networks characterized by multihop routing and many-to-one traffic pattern, and this uneven energy dissipation can significantly reduce network lifetime. Existing transmission policies, however, cause an extremely unbalanced energy usage that contributes to early demise of some sensors reducing overall network's lifetime drastically. In this paper, the authors study the problem of maximizing network lifetime through balancing energy consumption for uniformly deployed data-gathering sensor networks. Considering cocentric rings around the sink, they decompose the transmission distance of traditional multihop scheme into two parts: ring thickness and hop size, analyze the traffic and energy usage distribution among sensors and determine how energy usage varies and critical ring shifts with hop size.