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dc.contributor.author王曉涵en_US
dc.contributor.authorWang, Hsiao-Hanen_US
dc.contributor.author林一平en_US
dc.contributor.authorLin, Yi-Bingen_US
dc.date.accessioned2014-12-12T03:09:49Z-
dc.date.available2014-12-12T03:09:49Z-
dc.date.issued2006en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#GT009455525en_US
dc.identifier.urihttp://hdl.handle.net/11536/82051-
dc.description.abstract在UMTS (Universal Mobile Telecommunications System) 系統中,網際網路IP多媒體子系統 (IP Multimedia Subsystem; IMS) 負責提供多媒體服務。在IMS中,緊急電話是由E-CSCF (Emergency-Call Session Control Function) 所建立。E-CSCF會根據發話者所在位置轉接緊急電話到最近的公眾安全應變中心 (Public Safety Answering Point; PSAP)。在緊急電話建立完成後, PSAP會透過位置輪詢 (Location Polling) 機制來持續追蹤發話者的位置。本論文針對位置追蹤進行效能分析,並提出主動位置回報 (Active Location Reporting) 機制以提升位置追蹤的效能。研究結果顯示,主動位置回報機制在效能上較位置輪詢機制有顯著地改善。zh_TW
dc.description.abstractThe IP Multimedia Core Network Subsystem (IMS) provides multimedia services for Universal Mobile Telecommunications System (UMTS). In IMS, an emergency call is established by an Emergency-Call Session Control Function (E-CSCF). The E-CSCF dispatches the call to the nearest Public Safety Answering Point (PSAP) according to the location of the caller. After emergency call setup, the caller’s location is tracked by the PSAP through Location Polling. This thesis investigates the performance of location tracking. Then we propose the Active Location Reporting scheme to improve the performance of location tracking. Our study indicates that the Active Location Reporting scheme may significantly outperform the Location Polling scheme.en_US
dc.language.isoen_USen_US
dc.subject緊急電話zh_TW
dc.subjectIP 多媒體子系統zh_TW
dc.subject位置追蹤zh_TW
dc.subject全球行動通訊系統zh_TW
dc.subjectEmergency Callen_US
dc.subjectIP Multimedia Core Network Subsystem (IMS)en_US
dc.subjectLocation Trackingen_US
dc.subjectUniversal Mobile Telecommunications System (UMTS)en_US
dc.titleIMS 緊急電話之位置回報機制zh_TW
dc.titleActive Location Reporting for Emergency Call inUMTS IP Multimedia Subsystemen_US
dc.typeThesisen_US
dc.contributor.department資訊科學與工程研究所zh_TW
Appears in Collections:Thesis


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