Abstract
Recently, the usage of WSN increases to collect necessary information. At that time, users must consider energy safety because many small sensors are limited by battery capacity. In wireless sensor network (WSN) among existing protocols, the modified power-efficient gathering in sensor information systems (PEGASIS) is known to be effective routing when applied to cases with directional transmissions of data. However, this protocol doesnpsilat guarantee stability in data transmission because it isnpsilat the consideration for the error rates. This paper aims to solve the problems of the modified PEGASIS. We propose the diamond-shaped PEGASIS (DS-PEGASIS) routing protocol for wireless sensor networks where data packet is transmitted reliably. It has advantage in the sense which secures the reliable transmission of data based on a directional data transfer. The efficiency of this mechanism is based on the mathematical analysis of the modified PEGASIS and the proposed method of DS-PEGASIS.
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