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To avoid collisions in WiMAX networks, the connections in Subscriber Stations (SSs) use a request–grant process to acquire transmission resources from the Base Station (BS). In accordance with the IEEE 802.16 standard, the request–grant process is accomplished using either a unicast polling method or a contention request method. In WiMAX systems, the number of bandwidth-request (BR) slots per frame...
A Cross-Layer Mapping Unequal Error Protection (CLM-UEP) mechanism is proposed for video streaming over IEEE 802.11e wireless networks. In the proposed approach, the transmitted video frames are assigned a different number of redundant packets in accordance with their video coding significance. An adaptive cross-layer mapping algorithm is then applied in the Media Access Control (MAC) layer to map...
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