Study On Optical Communications, Volume. 50, Issue 3, 23004201(2024)
Research on NB-IoT Delay and Power Consumption in LEO Satellite IoT
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Fig. 1. Architecture of LEO satellite IoT integrating NB-IoT system
Fig. 4. Delay and power consumption multi-objective optimization algorithm
Fig. 5. Comparison of Pareto frontiers of different algorithms in the same service scenario
Fig. 6. Solution sets that meet delay power consumption requirements in different service scenarios
Table 1. Parameter setting
View tableView in ArticleTable 1. Parameter setting
仿真参数 参数值 低轨卫星星座 Starlink星座 卫星轨道高度/km 550 星地间长传播时延/ms [1.835，7.466] PSM状态平均功耗/mW 0.014 4 eDRX寻呼周期状态平均功耗/mW 3.04 RRC连接状态平均功耗/mW 22.8 寻呼状态平均功耗/mW 0.018 7 UL数据包传输功耗/mW 545 DL数据包传输功耗/mW 90 RRC固定定时器周期/s [1，60] eDRX寻呼周期/s [0，1 310.72] PSM周期/s [0，34 872.187] NPUSCH-F1调度延迟/ms 8 NPDSCH调度延迟/ms 4 接收数据切换到传输数据的调度延迟/ms 12 传输数据切换到接收数据的调度延迟/ms 3 随机接入序列延迟/ms 5.6 一个子帧的平均有效数据传输时间/ms 1.3
Table 2. NSGA-II algorithm for optimization results verification
View tableView in ArticleTable 2. NSGA-II algorithm for optimization results verification
工作状态定时器参数(TRRC,Tcycle,TPSM) 是否简化随机接入流程 系统下行时延/s 功耗/mW 业务场景1（50 s，20.48 s，60 s） 是 4.734 20.139 业务场景2（1 s，0，142.518 s） 是 62.008 3.329 业务场景2（1 s，0，142.518 s） 否 63.999 4.219
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Fan WANG, Xiao YU, Tao HONG. Research on NB-IoT Delay and Power Consumption in LEO Satellite IoT[J]. Study On Optical Communications, 2024, 50(3): 23004201
Paper Information
Category: Research Articles
Received: Mar. 17, 2023
Accepted: --
Published Online: Jul. 19, 2024
The Author Email: WANG Fan (1640284662@qq.com)
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