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In this paper we propose a novel medium access control (MAC) protocol that provides spectrum agile bandwidth allocation for cognitive radios. Our MAC protocol, called spectrum agile multiple access or simply SAMA, harnesses the frequency agility of cognitive radios in allocating fair and contention free bandwidth under a heterogeneous spectrum environment. SAMA accomplishes its bandwidth allocation...
A common technique for improving throughput in low bandwidth networks is the use of header compression. While removing static protocol entries and synchronizing state information between a sender and receiver can reduce per-packet overhead, this is defeated by fixed sized TDMA MAC frames. Another optimisation technique is the use of packet aggregation, where multiple data packets are concatenated...
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