Method and system for controlling the rate of vertical...

Details Method and system for controlling the rate of vertical... Method and system for controlling the rate of vertical...

2011-04-26

2011-04-26

Cho, Un C (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S436000, C455S435200, C455S452200, C370S332000

Reexamination Certificate

active

07933602

ABSTRACT:
A method and system for controlling the rate at which access terminals hand off from an IS-2000 (e.g., 1xRTT) communication system to an IS-856 (e.g., EVDO) communication system. A base station determines metric indicative of the rate at which hybrid access terminals hand off to the IS-2000 from the IS-856 system, and then based at least in part on the metric, dynamically adjusts a dormancy period that at least one hybrid access terminal must wait before entering a dormant mode in which is looks for service under IS-856. As the rate-metric indicates a higher or lower rate, the system may responsively adjust the dormancy period down or up. The rate at which hybrid access terminals operating under IS-2000 may seek service under IS-856 may thus be tuned to the rate at which they hand of form IS-856 to IS-2000.

REFERENCES:
patent: 6728217 (2004-04-01), Amirijoo et al.
patent: 6738373 (2004-05-01), Turner
patent: 2005/0201382 (2005-09-01), Xue et al.
patent: 2005/0265236 (2005-12-01), Kwon et al.

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