Student Project Star Madurai

Multihop flows require several transmissions to reach the destination, which significantly limits the end-to-end throughput in large networksThe gateway quickly becomes a bottleneck as the number of nodes increases.In our proposed system present XPRESS, throughput-optimal backpressure architecture for wireless multihop networks. In XPRESS, a mesh network is transformed into a wireless switch, where packet routing and scheduling decisions are made by a backpressure scheduler. XPRESS is composed of a central controller,Student Project Star Madurai which performs backpressure scheduling based on the measured wireless network state, and also of the wireless nodes, which periodically provide the network measurements and execute the computed schedule using a cross-layer protocol stack.

Student Project Star Madurai

In order to achieve synergy among these layers on our programmable 802.11 platform, we implement: a congestion control scheme to ensure the network operates within the capacity region, a coordination mechanism between network-layer flow queues and MAC-layer link queues, which enables per-link queue implementation on memory-constrained wireless interfaces and a multi-hop TDMA MAC protocol that not only ensures global synchronization among nodes, but also enables coordinated transmissions within slot boundaries according to the exact backpressure schedule.

Student Project Star Madurai
Student Project Star Madurai

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