{"id":254,"date":"2003-04-22T16:09:55","date_gmt":"2003-04-22T16:09:55","guid":{"rendered":"http:\/\/network.ee.tsinghua.edu.cn\/niulab\/?p=254"},"modified":"2010-08-24T10:26:45","modified_gmt":"2010-08-24T10:26:45","slug":"an-adaptive-thresholds-capacity-reservation-scheme-for-high-altitude-platform-cdma-systems","status":"publish","type":"post","link":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/?p=254","title":{"rendered":"An Adaptive Thresholds Capacity Reservation Scheme for High Altitude Platform CDMA Systems"},"content":{"rendered":"<p><a href=\"http:\/\/network.ee.tsinghua.edu.cn\/papers\/lius_hapsATCR_vtc2003s.pdf\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-117\" title=\"pdf\" src=\"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/wp-content\/uploads\/2010\/08\/pdf.gif\" alt=\"\" width=\"95\" height=\"50\" \/><\/a><br \/>\n<span class=\"paper_subtitle\">LANGUAGE<\/span><br \/>\nEnglish<br \/>\n<span class=\"paper_subtitle\">SOURCE<\/span><br \/>\nThe 57th IEEE Semiannual Vehicular Technology Conference (VTC2003-Spring), 22-25th April 2003, Jeju, Korea.<br \/>\n<span class=\"paper_subtitle\">Published Date<\/span>:2003-04-22<br \/>\n<span class=\"paper_subtitle\">ABSTRACT<\/span><br \/>\nIn High Altitude Platform Station (HAPS) systems, one of the major challenges is to maintain the station-keeping in the face of stratospheric turbulences. Unstable antenna beam pointing will cause frequent handoffs in HAPS based cellular networks, which drastically increases the forced termination probability of handoff calls. In this paper, we propose an adaptive thresholds capacity reservation (ATCR) scheme for soft handoff in an un-stable HAPS scenario. Through a prediction mechanism, a handoff call can dynamically adjust its handoff threshold ac-cording to potential traffic load in current cells. Based on a platform motion model, simulations show that the ATCR scheme reduces the blocking and the forced termination probabilities without degrading the quality of service.<br \/>\n<span class=\"paper_subtitle\">KEYWORDS<\/span><br \/>\nplatform motion, adaptive threshold, handoff, HAPS<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a href=\"http:\/\/network.ee.tsinghua.edu.cn\/papers\/lius_hapsATCR_vtc2003s.pdf\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-117\" title=\"pdf\" src=\"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/wp-content\/uploads\/2010\/08\/pdf.gif\" alt=\"\" width=\"95\" height=\"50\" \/><\/a>Song Liu, Zhisheng Niu, Youshou Wu, <span class=\"papertitle\">An Adaptive Thresholds Capacity Reservation Scheme for High Altitude Platform CDMA Systems<\/span>, <span class=\"papersource\">The 57th IEEE Semiannual Vehicular Technology Conference (VTC2003-Spring), 22-25th April 2003, Jeju, Korea.<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[99,23,26,18],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts\/254"}],"collection":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=254"}],"version-history":[{"count":2,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts\/254\/revisions"}],"predecessor-version":[{"id":916,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=\/wp\/v2\/posts\/254\/revisions\/916"}],"wp:attachment":[{"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/network.ee.tsinghua.edu.cn\/niulab\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}