Implementation of IMS-based PoC service with context-aware interaction

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作者
Department of Computer Science and Information Engineering National Chung Cheng University, Chiayi, Taiwan [1 ]
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来源
Int. J. Multimedia Ubiquitous Eng. | 2008年 / 4卷 / 25-44期
关键词
Application services - Context aware services - Context information - Context-Aware - Context-aware computing - Context-aware interaction - Group communications - Half-duplex - IP multimedia subsystems - Next generation network - Open mobile alliances - Push-to-talk - Push-to-talk over cellular - Service-based;
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摘要
Push-to-Talk (PTT) is a half-duplex and one-to-many voice group communication. In past decades, PTT service has been widely adopted in various areas, including practical military, police, security, rescue, and emergency radio communication, etc. In addition, PTT service has also annunciated being an IP Multimedia Subsystem (IMS)-based service defined by Open Mobile Alliance (OMA), which is called Push-to-Talk over Cellular (PoC).Contextaware computing derived from the field of ubiquitous computing as a technique for imbuing application services with an awareness of users' surroundings and situations for achieving transparent interaction. Thus, a user can obtain some reasonable and proper services among context-aware interactions. In this paper we try combine the features of PoC and contextaware service to implement a context-aware PoC service based on the Open IMS core. The context-aware PoC service can be aware to filter context information and to form an applicable PoC session according to the current contexts of participant PoC users. By the way, our implemented context-aware PoC service can be realizedly used to play an applicable IMS application service in the next generation network (NGN).
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