• Nakkina Sasikiran
• Prof. Kuda Nageswara Rao

Wireless Multimedia Sensor Networks (WMSNs) has made it possible to send multimedia data on small sensing devices. The multimedia content in such networks increase the level of information collected from the monitored field, enlarging the range of coverage, and multi-view support. Wireless Sensors Network is used to monitor agriculture field, traffic signal management & Health Monitoring, Pollution control, Military applications etc. with limited energy resources. Various energy efficient routing schemes are available to send sensed information to Base Station (BS). The sensor nodes have a limited transmission range, and their processing and storage capabilities as well as their energy resources are also limited. Routing protocols for wireless sensor networks are responsible for maintaining the routes in the network and have to ensure reliable multi-hop communication under these conditions. In this paper, i have done a survey of routing protocols for WSNs by summarizing the work on QoS based routing protocols that has already been published and by highlighting the QoS issues that are being addressed. The performance comparison of QoS based routing protocols such as SAR, MMSPEED, MCMP, LEACH, and SPEED has also been analyzed for various parameters It is proved by researchers that the multi-tier network architecture is more beneficial than a single-tier in terms of energy-efficiency, scalability and reliability for multimedia data transmission. In this context, application like intrusion detection appears as a promising application of multi-tier WMSNs, where the lower tier can detect the intruder using scalar sensors, and the higher tier camera nodes will be woken up to send real time video sequences detected from the monitoring area. The multimedia data are quite different from the scalar data generated in Wireless Sensor Networks (WSNs), which demands real time delivery of data to target end to increase the Quality of Service (QoS). In this paper, the QoS aware routing protocols for WMSNs are surveyed with the performance issues and the design challenges of each protocol for WMSNs are discussed.

Quality of Service (QoS), Wireless Sensor Networks (WSN), Wireless Multimedia Sensor Networks (WMSNs), Multi-tier architecture.

"Grouping of nodes based on pattern for service among WSN", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.310-318, December-2018, Available :http://www.jetir.org/papers/JETIR1812346.pdf

"Grouping of nodes based on pattern for service among WSN", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp310-318, December-2018, Available at : http://www.jetir.org/papers/JETIR1812346.pdf