PERFORMANCE COMPARISON OF QoS BASED ROUTING PROTOCOLS MBRR, REAR AND SPEED FOR WIRELESS SENSOR NETWORKS

A wireless sensor network (WSN) is a collection of small randomly dispersed micro sensor nodes that ha ve capability to sense, establish wireless communication between each other and do computations and process operations. A netw ork especially wireless network strongly depends on the routing protocols t o route the sensed data to the Base Station (BS) vi a some intermediate nodes. Due to fast emergence of the wireless sensing, a lot of work has been done on the various categories of ro uting protocols of WSN like location-based, data-centric, hierarchal routing pr otocols etc. to measure the network performance. Bu t recent studies are provided with the evidence that Quality-of-Service (QoS) rou ting can enhance the network performance by increas ing the network utilization, compared to routing that is not sensitive to QoS re quirements of traffic. So in this paper, the focus is on evaluation and comparison of the network performance in the WSN having QoS routi ng. The comparison of the three QoS routing protoco ls MBRR (Majority Based Re-Routing), REAR (Reliable Energy Aware Routing) a(Stateless Protocol for End-to-End Delay) on the basis of various performance metrics such as Bit Error Rate (BER) vs . Signal-to-Noise Ratio (SNR), Average End-to-End D elay vs. BER, Packet Delivery Ratio vs. BER, Energy Consumed vs. BER, Ne twork Lifetime vs. Energy Consumption, Throughput vand Throughput vs. SNR has been done in this research paper. On th e basis of observed simulation results, it is concluded that the performance of MBRR is better than the performance of other two co mparing protocols i.e. REAR and SPEED.