Transport Protocol to support Congestion Control and Controlled Reliability for Multimedia Transmission over Wireless Sensor Network

Abstract

Wireless Multimedia Sensor Network (WMSN) is a network of wirelessly interconnected sensor nodes equipped with multimedia devices, such as cameras and microphones, and capable to retrieve video and audio streams, still images, as well as scalar sensor data. There are different challenges at each layer of the protocol stack amongst which the major discussion is focused on transport protocols for WMSN which are classified into three categories viz. Reliability Support, Multipath Support and Congestion Control. Here, the focus is on Congestion Control Transport Protocols which are Standard Protocols like TCP and UDP or Application Specific Protocols like STCP, CODA, CCF, DPCC, UDDP, DCCP, etc. each of which depend on Node level or Link level congestion control mechanisms. Most of the existing transport protocols for WSN do not take into consideration the multimedia requirements in WMSN. Moreover, majority of the existing protocols do not provide congestion control and reliability simultaneously, i.e. either of them is implemented in the existing protocols. Therefore, there is a necessity of developing Transport Protocol that gives better performance as compared to the existing ones to control the congestion and provide reliability both, considering the multimedia requirements in WMSN. The proposed algorithm focuses on providing Controlled Reliability and Congestion Control both at the same time which is the core research area now a days.