认知无线网络中视频传输的资源分配方案

doi:10.3969/j.issn.1001-2400.2016.02.002

Abstract

Abstract:

Considering SUs with multiple radios, this paper discusses the cross-layer resource allocation problem for video transmissions in cognitive radio networks. Because of the coupling relationship between radio and channel, this paper proposes a new conflict graph based on the link-radio-channel, and models the resource allocation problem into an optimization problem. The constraints ensure the conflict-free and interference-free video transmissions, and provide flow routing and rate allocation for video services based on the feature of scalable video coding streams. The objective function achieves the network-level throughput maximization with fairness consideration. Simulation results show that the multi-radio transmission could gain a higher throughput. Also, the proposed scheme could provide fairness resource allocation, and use resource efficiently based on the feature of video services.

Key words: cognitive radio network, cross-layer resource allocation, multi-radio transmission, video transmissions

CLC Number:

TN929.5

LONG Yan;LI Hongyan. Resource allocation scheme for video transmissions in cognitive radio networks[J].Journal of Xidian University, 2016, 43(2): 6-12.

References

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Resource allocation scheme for video transmissions in cognitive radio networks

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