| Wen Guoli (文国莉),Zhang Qi,Tian Qinghua,Wang Houtian,Tao Ying,Chen Dong,Liu Naijin,Shen Yufei,Zhou Na.[J].高技术通讯(英文),2017,23(3):252~259 |
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| Dynamic routing and wavelength assignment algorithm of optical satellite networks based on cross-layer design |
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| DOI：10.3772/j.issn.1006-6748.2017.03.004 |
| 中文关键词: |
| 英文关键词: cross-layer design, Doppler wavelength shift, dynamic routing and wavelength assignment, optical satellite network |
| 基金项目: |
| Author Name | Affiliation | | Wen Guoli (文国莉) | | | Zhang Qi | | | Tian Qinghua | | | Wang Houtian | | | Tao Ying | | | Chen Dong | | | Liu Naijin | | | Shen Yufei | | | Zhou Na | |
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| 中文摘要: |
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| 英文摘要: |
| In order to overcome the adverse effects of Doppler wavelength shift on data transmission in the optical satellite networks, a dynamic routing and wavelength assignment algorithm based on cross-layer design (CL-DRWA) is introduced which can improve robustness of the network. Above all, a cross-layer optimization model is designed, which considers transmission delay and wavelength-continuity constraint, as well as Doppler wavelength shift. Then CL-DRWA is applied to solve this model, resulting in finding an optimal light path satisfying the above constraints for every connection request. In CL-DRWA, Bellman-Ford method is used to find an optimal route and a distributed relative capacity loss method is implemented to get an optimal wavelength assignment result on the optimal route. Moreover, compared with the dynamic routing and wavelength assignment algorithm based on minimum delay strategy (MD-DRWA), CL-DRWA can make an improvement of 5.3% on the communication success probability. Meanwhile, CL-DRWA can meet the requirement of transmission delay for real-time services. |
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