A study of 'event driven' type notification method for presence information

摘要

The ubiquitous service can realize "anytime", "anywhere", and "any terminal" accesses regardless of any means of access networks and various terminals for all users. This service is expected to realize more value-added services compared to the existing services. To provide this service, the network must manage user's location information and bandwidth capability. However, these information are frequently changed, if the user move widespread area and among various access networks. In consequence, this generates high network load. In this paper, we propose "event driven" type notification method for presence information that changes user's presence information to communicate the user using user a presence information. We simulate our proposal system and identify its validity.