Title :
Link-Layer Handover in Earth-Fixed LEO Satellite Systems
Author :
Korçak, Ömer ; Alagöz, Fatih
Author_Institution :
Comput. Eng. Dept., Bogazici Univ., Istanbul, Turkey
Abstract :
Using Virtual Node (VN) approach, network layer handover can be eliminated in earth-fixed LEO satellite systems. However, handover in lower layers could result in significant data loss. In this work we propose a link-layer handover algorithm for VN-based satellite systems: Virtual Node Handover Algorithm (VN-HO). Further, we propose to increment number of satellites per orbit in order to enable soft handover. On the modified system, which can be represented by multi-state virtual network (MSVN) topology, we propose a soft handover algorithm (MSVN-SHO). Relying on test results, MSVN-SHO is faster and smoother than VN-HO, despite a marginal increase in the cost.
Keywords :
satellite communication; VN-based satellite system; earth-fixed LEO satellite system; link-layer handover algorithm; multi-state virtual network topology; network layer handover; soft handover algorithm; virtual node handover algorithm; Artificial satellites; Communications Society; Costs; Low earth orbit satellites; Network topology; Peer to peer computing; Propagation delay; Routing; Satellite antennas; Testing;
Conference_Titel :
Communications, 2009. ICC '09. IEEE International Conference on
Conference_Location :
Dresden
Print_ISBN :
978-1-4244-3435-0
Electronic_ISBN :
1938-1883
DOI :
10.1109/ICC.2009.5199139
