Open AccessAdaptive Radio Resource Allocation for a Mobile Packet Service in Multibeam Satellite Systems
Author(s) -
Lim Kwangjae,
Kim Sooyoung,
Lee HoJin
Publication year - 2005
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.05.0104.0015
Subject(s) - computer science , computer network , telecommunications link , network packet , link adaptation , communications satellite , scheduling (production processes) , resource allocation , channel (broadcasting) , throughput , real time computing , satellite , fading , telecommunications , engineering , wireless , operations management , aerospace engineering
In this paper, we introduce an adaptive radio resource allocation for IP‐based mobile satellite services. We also present a synchronous multibeam CDMA satellite system using an orthogonal resource sharing mechanism among downlink beams for the adaptive packet transmission. The simulation results, using a Ka‐band mobile satellite channel and various packet scheduling schemes, show that the proposed system and resource allocation scheme improves the beam throughput by more than two times over conventional systems. The simulation results also show that, in multibeam satellite systems, a system‐level adaptation to a user's channel and interference conditions according to user locations and current packet traffic is more efficient in terms of throughput improvement than a user‐level adaptation.