TY - GEN
T1 - A Soft-Handover Scheme for LEO Satellite Networks
AU - Montezuma de Carvalho, Paulo Miguel de Araújo Borges
AU - Pinto, Paulo da Costa Luís da Fonseca
AU - Dinis, Rui Miguel Henriques Dias Morgado
AU - Oliveira, Rodolfo Alexandre Duarte
AU - Bernardo, Luís Filipe Lourenço
AU - DEE Group Author
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Traditionally, Low Earth Orbit (LEO) satellite networks use hard handovers when a Mobile Terminal (MT) moves between the footprints of two satellites. Such approach introduces a transitory disconnection interval, which may limit the capacity to provide demanding real-time requirements. A soft- handover approach that applies distributed packet combining on a satellite diversity scenario is proposed in this paper. Considering inexpensive MT hardware and low transmission powers, the paper analyses the performance gains and the difficulties that are associated to different Doppler and time-of-arrival shifts when the MT signal is broadcast to two satellites during the short handover period where both satellite's footprint overlap. A Single-Carrier with Frequency Domain Equalization (SC-FDE) transmission technique is considered in this paper. It is shown that it is possible to have an inter-satellite handover almost without quality of service (QoS) degradation for a Satellite Network Diversity Multiple Access (S-NDMA) scheme.
AB - Traditionally, Low Earth Orbit (LEO) satellite networks use hard handovers when a Mobile Terminal (MT) moves between the footprints of two satellites. Such approach introduces a transitory disconnection interval, which may limit the capacity to provide demanding real-time requirements. A soft- handover approach that applies distributed packet combining on a satellite diversity scenario is proposed in this paper. Considering inexpensive MT hardware and low transmission powers, the paper analyses the performance gains and the difficulties that are associated to different Doppler and time-of-arrival shifts when the MT signal is broadcast to two satellites during the short handover period where both satellite's footprint overlap. A Single-Carrier with Frequency Domain Equalization (SC-FDE) transmission technique is considered in this paper. It is shown that it is possible to have an inter-satellite handover almost without quality of service (QoS) degradation for a Satellite Network Diversity Multiple Access (S-NDMA) scheme.
KW - Soft Handover
KW - Satellite Network Diversity Multiple Access (S-NDMA)
KW - Satellite Diversity
KW - Packet Com- bining
KW - LEO Satellite Network
KW - Analytical Performance Evaluation.
U2 - 10.1109/VTCFall.2013.6692061
DO - 10.1109/VTCFall.2013.6692061
M3 - Conference contribution
SN - 978-1-4673-6187-3
SP - 1
EP - 5
BT - IEEE Vehicular Technology Conference
Y2 - 1 January 2013
ER -