An Elastic Resource Allocation Algorithm Based on Dispersion Degree for Hybrid Requests in Satellite Optical Networks
المؤلف | Li, Yiqiang |
المؤلف | Zhang, Qi |
المؤلف | Gao, Ran |
المؤلف | Xin, Xiangjun |
المؤلف | Yao, Haipeng |
المؤلف | Tian, Feng |
المؤلف | Guizani, Mohsen |
تاريخ الإتاحة | 2022-10-11T09:22:01Z |
تاريخ النشر | 2022-05-01 |
اسم المنشور | IEEE Internet of Things Journal |
المعرّف | http://dx.doi.org/10.1109/JIOT.2021.3112617 |
الاقتباس | Li, Y., Zhang, Q., Gao, R., Xin, X., Yao, H., Tian, F., & Guizani, M. (2021). An Elastic Resource Allocation Algorithm Based on Dispersion Degree for Hybrid Requests in Satellite Optical Networks. IEEE Internet of Things Journal, 9(9), 6536-6549. |
الملخص | The satellite-assisted Internet of Things (IoT) communication is considered a key component of the 6G network, and low Earth orbit (LEO) satellite is the leading choice of IoT-related satellites due to its minimum delay. Hybrid requests, including immediate reservation (IR) and advanced reservation (AR) services in LEO satellite netoworks cause the occurrence of resource fragments (RFrags), which adversely affect the network performance. To alleviate the degradation of network performance caused by resource fragmentation, a routing, wavelength, and time-slots assignment algorithm, which is named elastic resource allocation algorithm based on the dispersion degree (ERA-DD), is proposed in this article. Possible resource fragmentation types are analyzed and a fragmentation description named dispersion degree (DD) is designed. In the DD, the number of free resource blocks is accurately described by the state jumps (SJs) of adjacent resource slots, and the numerical relationship between SJs and free resource blocks is proposed and proved. Besides, restrictions on the selection priority of candidate schemes in the ERA-DD algorithm are analyzed. Finally, the traffic blocking rate, the wavelength utilization, the average communication delay, and the average initial delay are evaluated by simulation. The results demonstrate that RFrags are more fully utilized compared with the maximum total link spectrum consecutiveness (MTLSC) algorithm. The traffic blocking rate can be reduced by 32.5% and wavelength utilization can be increased by 1.6%. |
راعي المشروع | This work was supported in part by the National Natural Science Foundation of China (NSFC) under Grant 61835002 and Grant 61675033. |
اللغة | en |
الناشر | Institute of Electrical and Electronics Engineers Inc. |
الموضوع | Allocation strategies Communications management Modeling of resources Network communications |
النوع | Article |
الصفحات | 6536-6549 |
رقم العدد | 9 |
رقم المجلد | 9 |
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