User Location Management in SIP-based VoIP Environments
碩士 === 靜宜大學 === 資訊管理學系研究所 === 93 === SIP(Session Initial Protocol) is developed by IETF working group and is a signaling control protocol for creating, modifying, and terminating the multimedia sessions. SIP can provide personal mobility which allows addressing a single user located at different...
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| Format: | Others |
| Language: | zh-TW |
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2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/62mc9q |
| Summary: | 碩士 === 靜宜大學 === 資訊管理學系研究所 === 93 === SIP(Session Initial Protocol) is developed by IETF working group and is a signaling control protocol for creating, modifying, and terminating the multimedia sessions. SIP can provide personal mobility which allows addressing a single user located at different terminals by a logical address supported by name mapping and redirection functions. User registers his contact addresses to VoIP servers and server will fork the incoming request to these contact addresses.
In this thesis, we propose an improvement to reduce the traffic cost for sending invite and cancel requests by dividing the destination addresses into Active and Standby Group and phasing the forking processes. However, the numbers of miss calls and the repeated registrations could not be raised. In a word, our goal is to find the balance between the accuracy and performance to accomplish personal mobility.
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