Analyzing and shrinking network inaccessibility in ZIGBEE wireless communication by comparing it with TDMA-MAC protocol

The ZIGBEE standard is one of the basal elucidation protocol proposed for wireless sensor networks. The protocol describes a flexible MAC layer layout to meet a variety of applications. Since WSN is pertinence-specific it is very termitable to provide a generic explication for all type of applications and topologies. Network inaccessibility is a sensual affair derived from the subsistence of fault stirring the elucidation services bestowed by the Medium Access Control (MAC) sub-layer. Network inaccessibility is the cause of communication black-out. This cause prevention in communication and may create disruption of network operation. For network inaccessibility a diagnostic miniature is passed-down in Wireless Sensor network to present ZIGBEE as a case study. In this paper network accessibility is reduced by using star and tree topology and implementing TDMA-MAC protocol and ZIGBEE MAC protocol in WSN network and comparing through-put, end-to end delay and packet delivery ration in two scenarios. A Network Simulator (NS-2) is used to check the effectiveness of different topologies.