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As the technology of multimedia applications in Wireless Sensor Networks (WSNs) is highly desired nowadays, how to guarantee real-time service becomes one of the biggest research challenges in this area. Even though lots of related works have been conducted to meet this requirement in several ways, the specific traffic model for multimedia applications has not been taken yet. It makes these new approaches not adaptable in real deployments. To solve this problem, in this paper, the authors model the real-time streams of multimedia applications with (m, k)-firm guarantee, using the firm real-time property it contains.
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