Interference-Mitigated ZigBee-Based Advanced Metering Infrastructure

Abstract : An interference-mitigated ZigBee based Advanced Metering Infrastructure solution, namely IMM2ZM, has been developed for high traffics smart metering. The IMM2ZM incorporates multi-radios multi-channels network architecture and features an interference mitigation design by using multi-objective optimization. To evaluate the performance of the network due to interference, the channel swapping time (Tcs) has been investigated. Analysis shows that when the sensitivity (PRX) is less than -12dBm, Tcs increases tremendously. Evaluation shows that there are significant improvement in the performance of the application layer transmission rate (s) and the average delay (D). The improvement figures are: s > ~300% and D >70% in a 10-floor building; s > ~280% and D >65% in a 20-floor building; and s > ~270% and D >56% in a 30-floor building. Further analysis reveals that IMM2ZM results in typically less than 0.43 sec delay for a 30-floor building under interference. This performance fulfills the latency requirement of less than 0.5 sec for SMs in the USA. The IMM2ZM provides a high traffics interference-mitigated ZigBee Advanced Metering Infrastructure solution.

 EXISTING SYSTEM :

 ? The coexistence of different wireless technologies in the vicinity of each other and working in the same frequency band affects the performance of each other. ? Secure HAN emphasizes and addresses the complications raised due to the coexistence environment. ? The effects of interference on ZigBee communication in the coexistence model is based on the transmitter and receiver distance. ? When source node (ZigBee) is ready for data transmission, it estimates the quality of the channel for effective communication in the coexisting environments.

 DISADVANTAGE :

 ? In most practical engineering problems including wireless network design, global optimum does not exist. ? Therefore the problem cannot be formulated into single objective optimization problem. ? Most of the problems in engineering demand the consideration of multiple conflicting objectives in order to give a comprehensive and excellent performance. ? The multi-objective problems render the launch of Multi-Objective Evolutionary Algorithms (MOEAs). ? The primary parameter for wireless communication network design For SM, a large D largely impacts the effectiveness of the system.

 PROPOSED SYSTEM :

 • The framework proposed assures the effective ZigBee communication by systematic channel scheduling operating even under the influence of Wi-Fi. • The work proposed performs better even under extreme interference conditions and the results obtained shows enriched performance. • The algorithm proposed is aimed at improving the performance of ZigBee based cluster tree networks affected by WLAN access points (AP) and resolves the issues of channel utilization within the cluster. • A multi-channel architecture in was proposed for defeating the issue of concealed hubs and WLAN interference with the point of expanding packet delivery ratio (PDR).

 ADVANTAGE :

 ? In general, the transmission rate, the number of bits transmitted successfully in a unit time, is an important performance indicator for wireless communication. ? The transmission rate on the application layer affects significantly the network performance. ? It is seen that the performance of multiple objective optimization surpass the priority based optimization. ? Interference mitigation is important for high performance and thus a study is a necessary. ? By taking advantage of ZigBee Smart Energy open standard and its mesh capability for scalability, researchers find it advantageous and efficient to adopt ZigBee in SM applications.