Network-based migrating user agent for personal communication se

Details Network-based migrating user agent for personal communication se Network-based migrating user agent for personal communication se

1997-06-27

2000-07-04

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455422, 455436, H04Q 720

Patent

active

060850868

ABSTRACT:
The present invention is a user process that resides in network nodes to act as an agent for mobile terminals in, for example, PCS environments. The user process handles negotiation and complex signaling functions for the user, thus reducing the amount of signaling traffic that must travel over the valuable air interface. To achieve low call establishment times the user process is migrated as user move. Three embodiment is adapted to enable data sizes which are to be transferred to be optimized, leading to low overhead. This approach also provides flexibility when migrating across heterogeneous environments. A second alternative embodiment may be advantageously utilized when a program is compute intensive and asynchronous migration is essential. The third embodiment provides high reliability in the form of checkpointing, but incurs a high migration delay and has high memory requirement for network processors.

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