Research On WSN Resource Scheduling Technology For Quality Of Service

With the development of micro-electronics, computer and network technology, sensor technology is toward miniaturization, intelligent, networked and integrated direction. Wireless sensor network as transmission means of sensor technology and important support technology has become a hot research topic in the field of sensor.Wireless sensor network(WSN) is a data-centric network, efficiently and accurately completed custom task is the primary measure of network performance. Therefore, the rational use of limited network resources to provide guaranteed network service application Or for the wireless sensor network quality of service(quality of service) system research goal Wireless sensor network generally has the characteristics of the node density is larger At the same time, wireless sensor network node energy, wireless communication bandwidth, generally limited computing power, storage capacity and other resources Sensor nodes usually rely on battery power, work in unattended, poor working environment This makes the energy management problem is particularly important.First of all, for wireless sensor networks is proposed in this paper a WSN resource scheduling algorithm for quality of service Respectively under different application background is presented In sensor communication radius is greater than or equal to 2 times the radius of perception and smaller than 2 times the radius of perception Ensure that the network coverage and connectivity Implementation of sensor resources scheduling.Secondly, in view of the real-time performance of the network to design a routing algorithm based on service quality Routing mechanism of time delay estimation, algorithm is designed respectively, neighbors feedback mechanism and reverse pressure change routing.Finally, through MATLAB to the text of the proposed scheduling algorithm are simulated Were compared in this paper,First of all, were compared in this paper, scheduling algorithm and CCP scheduling algorithm of coverage, work nodes and the network life cycle and so on network performance indicators.Then,compared the scheduling algorithm in this paper, SAR agreement and the SPEED of packet loss rate and transmission delay of network performance indicators.From the simulation results, the proposed scheduling algorithm to achieve the save network energy, prolong the network life cycle, at the same time guarantee the real-time and reliable data transmission performance.