Directed Diffusion: Features, Current Developments, Issues and Analysis

Abstract

ABSTRACT Directed diffusion (DD) is typical data-centric protocol for wireless sensor networks, all nodes in a directed diffusion based network are application-aware, and this enables diffusion to achieve energy savings by selecting empirically good paths and by caching and processing data in-network But at the beginning of routing being established, interest must be flooded throughout the network, Directed Diffusion Protocol (DDP) which could meet the features of WSN, such as data-oriented, many-to-one transmissions and low energy costs, together with data aggregation mechanisms which emphasized on cascading timeouts, to eliminate the redundancy caused by the transmission of large amounts of data. This paper presents the description of DD protocol and current developments including the view for which one is best. Keywords:- Directed Diffusion, WSN Protocols 1. INTRODUCTION In recent years, wireless sensor networks have attracted more and more related researchers for its advantages. Sensor nodes are usually low-power and non-rechargeable. The integrity of the original networks will be destroyed and other nodes will have more business burden for data transmission if the energy of some certain nodes deplete. The key issue of sensor network research is to balance the energy consumption of all sensor nodes and to minimize the impact of random failure of sensor nodes or random attacks to sensor nodes on the entire network. A number of routing protocols have been proposed for sensor networks [1]. Directed Diffusion [2] is one of the energy efficient routing protocols that have been proposed. The directed diffusion algorithm does not use any mechanism to protect the nodes from outsider attacks. This paper presents a brief work which had done in the Directed Diffusion protocol and it also conclude which approach is better as per the requirement of applications.