Reducing delay in setting up calls

Details Reducing delay in setting up calls Reducing delay in setting up calls

2006-08-15

2006-08-15

Feild, Joseph (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S516000, C455S517000, C455S518000, C455S519000, C455S527000, C455S520000

Reexamination Certificate

active

07092721

ABSTRACT:
A method (600) and apparatus (700) for reducing delay associated with a call set-up for a call between an originating communication unit (120) and a target communication unit (121–124) in a radio access system (RAS) (101) is described. A call is initiated with a target communication unit prior to a channel assignment. A first latency (411) between an initiation time and a time when the target is capable of receiving a notification of the call on a first channel (410) is estimated and a second latency (421) between the initiation time and a second time when the target is capable of receiving the notification on a second channel (420) is estimated. Addresses associated with the target can be sent to the radio access system on the first channel or the second channel based on the estimated first latency and the estimated second latency.

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