Kuo-Hsing Chiang

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In this work, a novel two-dimensional (2-D) random-walk mobility model is proposed, which can be used for studying and analyzing the location-area crossing rate and dwell time of mobile users in wireless networks. The development and application of the model under two cell structures, namely the square and hexagon cells, have been detailed. The analytical(More)
In this paper, we define a new “location area” for location management in wireless networks. Location management schemes comprise of location update and terminal paging. Efforts to introduce efficient location update schemes results in increased paging costs and vice-versa. Dynamic Location Area (LA) schemes, which are per-user and mobility pattern based(More)
Location management schemes continue to be a topic of major research. Especially with the upcoming 3G, 4G and wireless LAN technologies, which will bring better services to the mobile users, it is anticipated that the mobile user population would continue to increase. Location management schemes comprise of location update and paging procedures. Efforts to(More)
This paper contains a survey on the random walk mobility model for congestion control in mobile ad-hoc networks. A mobility model represents the movement of a mobile user, and how their location, velocity and acceleration change over time. The mobility model discussed in this paper is random walk mobility model where the mobile nodes move randomly and(More)
In this paper, we have proposed a location update scheme by applying swap technique and enhanced GTT in STP. This scheme achieves significant improvement in signalling costs compared to other location update schemes. This paper presents the details of this scheme and provides comparison results with other location database management schemes. The(More)
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