Abstract
With the advancement of wireless sensor networks (WSNs) and technology, applicability of WSNs as a system is touching new heights. The development of multimedia nodes has led to the creation of another intelligent distributed system, which can transfer real-time multimedia traffic, ubiquitously. Wireless multimedia sensor networks (WMSNs) are applicable in a wide range of areas including area monitoring and video surveillance. But due to unreliable error-prone communication medium and application specific quality of service (QoS) requirements, routing of real-time multimedia traffic in WMSNs poses a serious problem. The paper discusses various existing routing strategies in WMSNs, with their properties and limitations which lead to open research issues. Further, detailed classification and analytical comparison of discussed protocols are also presented.
Highlights
A wireless sensor network (WSN) comprises a substantial number of interconnected sensor nodes (SNs) that have the capability to sense the physical environment attributes such as temperature, pressure, humidity, light, and sound and simultaneously interact with each other over the wireless medium
wireless multimedia sensor networks (WMSNs) is a special type of WSN which can sense and transfer scalar data as well as multimedia data, that is, image, audio, and video streams, in real-time as well as nonreal-time
Classification-wise analytical comparison of protocols is done at the end of each class (Tables 2, 3, 4, 5, and 6), in which attributes like characteristics features, suitability for WMSNs, performance metrics, type of network, energy efficiency, and performance results are stated
Summary
A wireless sensor network (WSN) comprises a substantial number of interconnected sensor nodes (SNs) that have the capability to sense the physical environment attributes such as temperature, pressure, humidity, light, and sound and simultaneously interact with each other over the wireless medium. Detailed analytical and experimental comparison of various QoS based energy efficient and reliable routing protocols was done by the authors. Whereas the authors Ehsan and Hamdaoui [1] performed extensive survey of WMSN, which included detailed classification and analytical comparison based on different criteria and protocol’s summary and drawbacks. Classification-wise analytical comparison of protocols is done at the end of each class (Tables 2, 3, 4, 5, and 6), in which attributes like characteristics features, suitability for WMSNs, performance metrics, type of network, energy efficiency, and performance results are stated.
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