Abstract
Mobility management is an important aspect in the LEO systems. This paper introduces a modified movement-based location update and paging scheme in LEO networks. In this scheme we propose the meta-cellular concept, which includes two spot-beams of one satellite. First we present the location management scheme that use meta-cell model. Then an analytical model is applied to formulate the cost of location updating and paging for meta-cell and movement-based combined dynamic location update scheme. The comparison of performance between meta-cell method and normal-cell method is provided to demonstrate the cost-effectiveness and robust of the proposed scheme under various parameters. To reduce the impact of meta-cell on paging cost, we present forced location update strategy when the meta-cell includes the cells from different satellites.
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