A Power-Optimized Handover strategy in Hybrid Satellite-Terrestrial Networks

DOI

10.2991/jimet-15.2015.58How to use a DOI?

Keywords

Satellites Power-optimized Markov decision process (SPO-MDP); Handover Strategy; Hybrid Satellite-Terrestrial Networks (HSTNs)

Abstract

Satellite communications provide large-scale coverage, so they can be integrated with terrestrial networks to implement a global wireless system, namely HSTNs. However, the network resources of satellite systems, such as the bandwidth and power, are extremely limited. This paper proposes a handoff strategy to minimize the power consumption of satellite systems required in serving a traffic flow in a hybrid Satellite-Terrestrial system, while guaranteeing the user QoS. It first established a speed-sensing based handoff model integrated with both horizontal and vertical handoff. To further minimize the power consumption, an improved Markov decision algorithm for vertical handover, namely SPO-MDP, is brought up. Simulation results show that the proposed model and scheme can lead to a lower power consumption and fewer handoff times in satellite systems compared to several existing schemes and meanwhile keeps the call drop rate at a respectively low level.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Huiping Xu
AU  - Jinchun Gao
AU  - Hefei Hu
AU  - Dongming Yuan
AU  - Jing Ran
PY  - 2015/12
DA  - 2015/12
TI  - A Power-Optimized Handover strategy in Hybrid Satellite-Terrestrial Networks
BT  - Proceedings of the 2015 Joint International Mechanical, Electronic and Information Technology Conference
PB  - Atlantis Press
SP  - 318
EP  - 322
SN  - 2352-538X
UR  - https://doi.org/10.2991/jimet-15.2015.58
DO  - 10.2991/jimet-15.2015.58
ID  - Xu2015/12
ER  -