Abstract
Real Time Communications (RTC) involve several technologies and protocols that have been instrumental to the establishment of media sessions over packet switching networks. Well known legacy protocols like Session Initialization Protocol (SIP) and Real Time Protocol (RTP) are the preferred mechanisms to accomplish this goal, however, in Internet of Things (IoT) environments where computational resources are limited, their use becomes a challenge. Because several applications in Wireless Sensor Networks (WSNs) require image transmission, in this paper we introduce a mechanism that provides media packetization relying on IoT-specific transport protocols. Specifically, sensors that already include a Constrained Application Protocol (CoAP) stack can reuse it to provide media transport. The performance of CoAP based image transmission is compared against that of traditional RTC transport from both the theoretical and the experimental perspective.
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