Summary
International Symposium on Antennas and Propagation
2012
Session Number:4D3
Session:
Number:4D3-3
Developed and Evaluation Satellite/Terrestrial Integrated Coordinate Control Simulator
Kunio Endoh, Hiroyuki Tsuji, Amane Miura, Yoshiyuki Fujino,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Importance of social role using mobile communication services has increased consecutively. Correspondence of mission- critical cases especially disaster prevention, disaster mitigation and safety measure are especially important. We have a goal to make a social contribution by mobile communication infrastructure using a new satellite system named STICS (Satellite/Terrestrial Integrated mobile Communication System). STICS is a system which realizes seamless disaster-resistant mobile communication infrastructure by integrating both terrestrial communication system and satellite communication system controls, and To discuss deeply about STICS system,we developed a satellite/terrestrial integrated coordinate control simulator. The simulator can simulate the whole systems including terrestrial system, satellite system, and the coordination control both them. The simulator can also simulate the resource coordinate control between satellite and terrestrial systems depending on the real-time traffic condition where the speed of mobile terminals can be set flexibly. As a result, the simulator enables us to evaluate the effective allocations of the frequency and satellite power resources given by STICS under the condition of arbitrary communication traffic conditions in whole of Japan and Japanese waters. And it also enables a creation of a flexible system which simulates actual disaster traffic conditions. We evaluated the effectiveness of STICS including the coordinate control function by simulating the traffic change when the Great East Japan Earthquake occurred, which is said to be increased 60 times as much as normal . As a result, we confirmed that the operation by STICS reduced the lost-call by 63% under the condition that the terrestrial calls in disaster area are transferred to a satellite link while the satellite resources are focused on the disaster area and the dynamic control of the occupied satellite line rate was applied by monitoring the satellite use rate and traffic changing rate.