%0 Journal Article
%T Impact of Cell Mobility on Handovers in Low Earth Orbit Satellite Systems<br>低轨卫星网小区移动性对切换的影响
%A Qin Yong
%A Zhang Jun
%A Zhang Tao
%A <br>秦勇
%A 张军
%A 张涛
%J 电子与信息学报
%D 2007
%I 
%X The relative motion direction of spot-beams decides the handover relation between cells for users in Low Earth Orbit (LEO) satellite systems, and directly affects the performance of handovers for users. User mobility models are developed for two typical cell motion patterns, mobility parameters such as cell dwell time, handover probabilities and average number of handover requests are analyzed. The impact of cell mobility on user’s handovers has been investigated by simulations for a channel allocation technique. It has been shown that model II has the better performance than model I, and is more applicable for LEO satellite systems with small cell overlaps, reference can be supplied for spot-beams coverage layout.
%K Low Earth Orbit(LEO) satellite systems
%K Mobility model
%K Handover
%K Cell mobility<br>低轨卫星网络
%K 移动模型
%K 切换
%K 小区移动性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=BE1B9362631BC3E03AD8E528640A115D&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=644ED03C44803849&eid=438B6D498F05EE69&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=11