QoS Strategies for Wireless Multimedia Sensor Networks with Energy- Efficient Routing Techniques & QoS Assurances

In recent years, for delivering multimedia information such as images and videos, wirelessmultimedia sensor networks (WMSNs) have emerged as an outstanding technique. Due to the fastAdvancements in sensor technology and the availability of low-cost hardware, the development ofWireless Multimedia Sensor Networks (WMSNs) has emerged. WMSNs are composed of resourceconstrainedwireless nodes through which both the scalar data and multimedia data (i.e., audio, stillimages, and video) can be sensed and acquired from the environment. However, the resource-constrainednature of multimedia sensing devices has made the WMSNs face several challenges. To tackle thesechallenges, different authors developed different methods. In this paper, we have surveyed all such kindsof methods. Initially, we study the basic architecture of multimedia senor nodes followed by thecharacteristics and applications of WMSNs. Next, we have conducted a detailed survey over differentmethods and all those methods are segregated into three categories. Under the segregation, we haveconsidered different aspects and segregated them as Data-Aware methods, QoS Aware methods, andEnergy-Aware methods. In the end, we also summarized the existing solutions and outlined several prosand cons. In this paper, recent developments in techniques for designing highly energy-efficient and QoScapableWMSNs are surveyed.