Time-Slot Assignment Strategy in LEO/MEO Satellite Networks with Inter-Satellite Links
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In this paper, we analyze steerable antennas scheme considering multi-traffic in intersatellite systems, and consider three directional antennas scheduling algorithms. First, the FSS(Fair Slot Scheduling) fairly provides timeslots to neighbor satellites for data transmission/reception. Second, in order to implement priority service, the WSS(Weighted Slot Scheduling) allocates different service probabilities to each satellite links. The last scheme DSS(Dynamic-weighted Slot Scheduling) is that service ratio for providing time-slots is determined dynamically by network condition. Low earth orbit/medium earth orbit(LEO/MEO) mobile satellite needs intelligent networks for cost-efficient crosslink communication. The antennas can be electronically directed in conjunction with the scheduling, resulting in a synchronous time-beam-hopped system [3],[9]. For satellite transmission/reception, multitraffic may be scheduled by its service characteristics and priority which can be categorized into two service principles : sharing and isolation. We point out that the establishment of satellite crosslink is to be done on the scheduling of antennas direction, taking the dynamic nature of LEO/MEO satellite communications into account.
Abstract
In this paper, we analyze steerable antennas scheme considering multi-traffic in intersatellite systems, and consider three directional antennas scheduling algorithms. First, the FSS(Fair Slot Scheduling) fairly provides timeslots to neighbor satellites for data transmission/reception. Second, in order to implement priority service, the WSS(Weighted Slot Scheduling) allocates different service probabilities to each satellite links. The last scheme DSS(Dynamic-weighted Slot Scheduling) is that service ratio for providing time-slots is determined dynamically by network condition. Low earth orbit/medium earth orbit(LEO/MEO) mobile satellite needs intelligent networks for cost-efficient crosslink communication. The antennas can be electronically directed in conjunction with the scheduling, resulting in a synchronous time-beam-hopped system [3],[9]. For satellite transmission/reception, multitraffic may be scheduled by its service characteristics and priority which can be categorized into two service principles : sharing and isolation. We point out that the establishment of satellite crosslink is to be done on the scheduling of antennas direction, taking the dynamic nature of LEO/MEO satellite communications into account.