Mobile IPTV service over wireless mesh networks

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In wireless mesh networks (WMNs), mobile IPTV service demands the support of multicast communication with quality-of-service (QoS) assurance. To achieve QoS guaranteed multicast, we consider to employ the following mechanisms: MAC Layer Enhancement, Prioritized Guaranteed Rate (GR) Packet Scheduling, Hybrid Error Control, and Traffic Engineering Enabled QoS Multicast Routing. MAC Layer Enhancement and Prioritized GR Packet Scheduling aim to reduce the delay and suppress the jitter for mobile IPTV service. Specifically, we will first improve the standardized IEEE 802.11 MAC layer, so that IPTV applications can have more media assess opportunity. We will then design a prioritized scheduling algorithm, which can give mobile IPTV top preference during the packet switching process in multi-service environment. Besides delay and jitter, bit error rate is another important QoS concern of mobile IPTV users. Accordingly, we will develop a new hybrid error control scheme that integrates interleaving, forward error correction (FEC), and automatic repeat request (ARQ) to mitigate the error and loss effects encountered in WMNs. All three mechanisms mentioned above will be provided to mobile IPTV applications through the QoS Multicast Routing process. To address the efficiency of resource usage in WMN, we will develop a network graph preprocess approach, which enhances the multicast routing protocols with traffic engineering function.