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A Cross-layer Scheduling Algorithm Based on Cognitive Radio Network |
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PP: 611-617 |
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Author(s) |
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Changpeng Ji,
Xiaoqiu Nie,
Yujie Yuan,
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Abstract |
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| Cognitive radio network users have different QoS requirements. In order to provide different QoS requirements to users
as well as increase the capacities of the cognitive radio networks, this paper presents a first in-depth comparative study on different
factors effect QoS which include system performance, power interference, wireless channel conditions, services priorities and fairness
constraints. A cross-layer scheduling algorithm which could optimize system performance and control power interference is proposed.
Latency default probability of real-time users and throughput performance of non- real-time users are respectively used to measure
the fairness of real-time operational system and non-real-time operational system. Simulation results are computed and the results are
shown. Delay performance of real-time traffic and throughput performance of non-real-time traffic are guaranteed by setting reasonable
weight to index. And power interference to authorized users caused by cognitive radio network users reduces obviously. And system
obtains a very good fair performance. |
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