Self-organizing Network Architectures and Protocols

Self-organization is a useful strategy for building scalable systems consisting of numerous subsystems. The primary objectives of self-organization mechanism are coordination and collaboration on a global-wide. The concept of self organization is particularly important in ad hoc networking because of the spontaneous communication of several components over wireless links. Moreover, the notion of self-organization addresses the main objectives of wireless ad hoc networks such as scalability, reliability and availability. Though wireless ad hoc network offers important rapid deployment and cost benefits, the conventional “flat” multi-hop routing technique does not scale well, i.e. the system performance degrades as the number of nodes in the system increases. This factor motivated to consider more scalable ad hoc network architectures, especially based on hierarchical approaches. The recent designing factors of ad hoc network consider a discovery and topology establishment protocol for self-organization and an efficient routing protocol to support multi-hop data transmission. The routing protocols that are designed for mobile ad hoc network such as Dynamic Source Routing (DSR), Ad-hoc On-demand Distance Vector (AODV), and Temporally Ordered Routing Algorithm (TORA) can be used in a hierarchical architecture with some modifications.