Mobile communication system

Details Mobile communication system Mobile communication system

2006-04-04

2006-04-04

Gelin, Jean (Department: 2681)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S403000, C370S235000, C370S252000, C370S253000

Reexamination Certificate

active

07024201

ABSTRACT:
By detecting a degraded state of wireless transmission quality due to steady occurrence of re-transmission in an early stage to lead to a call connection, a service quality is made sure, an excess time charge on an end user is prevented and wireless resources are utilized efficiently. A base station controller monitors a PDU transmission state in a wireless link to a mobile station in call unit, calculates an occurrence rate of re-transmission as an evaluation value of wireless transmission quality, determines a degradation of the wireless transmission quality when the occurrence rate of re-transmission becomes equal to or larger than a predetermined threshold value and performs a disconnection processing for the call.

REFERENCES:
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patent: 5995239 (1999-11-01), Kagawa et al.
patent: 6832082 (2004-12-01), Ramaswamy et al.
patent: 2002/0034947 (2002-03-01), Soliman
patent: 2002/0080719 (2002-06-01), Parkvall et al.
patent: 10-042120 (1998-02-01), None
patent: 10-117213 (1999-05-01), None

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