A Power-Optimized Handover strategy in Hybrid Satellite-Terrestrial Networks
- https://doi.org/10.2991/jimet-15.2015.58How to use a DOI?
- Satellites Power-optimized Markov decision process (SPO-MDP); Handover Strategy; Hybrid Satellite-Terrestrial Networks (HSTNs)
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.
- © 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/).
Cite this article
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 - https://doi.org/10.2991/jimet-15.2015.58 ID - Xu2015/12 ER -