Research Article
A Qos-based Dynamic Slot Assignment Algorithm with Adaptive Frame
@INPROCEEDINGS{10.1109/ChinaCom.2013.6694581, author={Zian Zhang and Xiaonin Zhang}, title={A Qos-based Dynamic Slot Assignment Algorithm with Adaptive Frame}, proceedings={8th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2013}, month={11}, keywords={tactical data link system tdma slot assignment quality of service (qos)}, doi={10.1109/ChinaCom.2013.6694581} }- Zian Zhang
Xiaonin Zhang
Year: 2013
A Qos-based Dynamic Slot Assignment Algorithm with Adaptive Frame
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2013.6694581
Abstract
Tactical Data Link System always uses Time Division Multiple Access (TDMA) in Mac Layer. In TDMA, the channel is divided into time slots, and nodes are allocated slots to transmit data through the same time slot assignment algorithm. The tactical scenario is complicate and unpredictable, and some important messages need high Qos guarantee. It is hard to guarantee the Qos by the pre-allocated slot assignment protocol when the network is flooded, so Qos-based dynamic slot assignment protocol flourishes. But there is still a problem that low-priority message always suffers from starvation in these traditional Qos-based protocols. Thus, we propose a new Qos-based slot assignment protocol, which the frame length is changed dynamically according to the number of the requests in the network, to improve Qos performance of all kinds of messages. Through the simulation, we find that this protocol decreases the delay of messages of higher priority to some extent and obviously achieves desirable delay of the low priority message. Meanwhile, this protocol also improves the channel utilization.