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Retransmission based on packet acknowledgement (ACK/NAK) is a fundamental error control technique employed in IEEE 802.11-2007 unicast network. However the 802.11-2007 standard falls short of proposing a reliable MAC-level recovery protocol for multicast frames. In this paper we propose a latency and bandwidth efficient coding algorithm based on the principles of network coding for retransmitting...
We consider multi-channel multi-interface wireless mesh networks with a schedule-based MAC protocol, where conflict-free transmission is ensured by requiring links assigned with the same channel and within the mutual interference range of each other to be active at different time slots. When a (point-to- multipoint) multicast call arrives, the call is accepted if a multicast distribution tree can...
We make some modifications in this paper to the DAP-NAD-CJ (deterministic adaptable priority net access delay with cycle jump) algorithm for multicast applications. The new algorithm assigns wireless channel access slot unevenly between stations in the network so that the multicast source can access channel as fast as possible. We then proved by calculations and simulations that the modified algorithm...
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