Adaptive packet aggregation scheduling scheme for CRMANET

This paper proposes an adaptive packet aggregation scheme with QoS awareness in CR (Cognitive Radio) enabled Mobile Ad Hoc Networks (CRMANET). Instead of directly introducing the aggregation scheme from the 802.11n standard into CRMANET, the proposed adaptive scheme inherits the design advantages from the work given in [1] in regard to packet scheduling to further utilize each sub-channel before every transmission. Two types of service (Retransmission and Non-Retransmission) are considered in the scheduling scheme. Meanwhile three aspects (buffer structure, time measurement and back-off) are carefully designed in relation to the aggregation frame. Simulation results show that the aggregated scheduling scheme provides much higher throughput and less delay in a CRMANET environment compared to the performance of the 802.11n scheduling scheme.