Wireless Sensor Network for Surveillance using a Multichannel Multi-Radio Approach

In wireless video sensor network, multiple source data transmission is a challenging task because of the high bandwidth demand of video frames. The IEEE 802.15.4 standard is designed for low data rate, low power consumption and low cost wireless personal area networks (WPANs). Video transmission over such type of networks is considered an issue because video sources requires high data rates. Wireless standards, including IEEE 802.15.4, is use a multiple nonoverlapped channels that exist in the 2.4GHz spectrum. The average throughput of these networks can be imcreased by using multiple channels that are available in the radio spectrum allocated bythe standards. The main importance of this paper is to improve the Zigbee networks under the interference of 802.15.4 and 802.11 devices using multiple channels and multiple radio interfaces so thatvideo transmission is reliable.