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Overload Measurement and Control of Access Control Channel Based on Hysteresis at Satellite Communication of DAMA  

Choi, Hyung-Seok (국방과학연구소)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.7B, 2005 , pp. 440-449 More about this Journal
Abstract
This paper proposes the measurement scheme for network overload and the control technique in case of breaking several control channels when we support the call services of DAMA through communication satellite(GEO, Geostationary Earth Orbit). And its performance is analyzed. The proposed schemes measure the overload of access control channel of a network controller to control the call connections, detect the level of network overload, notify the terminals of DAMA network of the state, and excute overload control. As a result, it improves the system performance and the network stability at overload state. Moreover hysteresis is applied to the change of overload state for the restriction of the frequent state shifts. The results show that the proposed algorithm prevents excessive increment of call-setup delay and too much lowering of call success rate, and improves the network stability.
Keywords
Overload control; hysteresis; satellite communication; DAMA(Demand Assigned Multiple Access);
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