Transmission time adjusting apparatus and method between RNC...

Details Transmission time adjusting apparatus and method between RNC... Transmission time adjusting apparatus and method between RNC...

2007-04-24

2007-04-24

Pham, Chi (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000

Reexamination Certificate

active

10183937

ABSTRACT:
A method of adjusting the transmission time of data in a CDMA communication system. A UE (User Equipment) measures the time difference between the received time of a downlink DPCH (Dedicated Physical Channel) and the transmitted time of an uplink DPCH and reports it to an RNC (Radio Network Controller). The RNC transmits transmission time adjustment information to a node B and the UE if the time difference is out of a predetermined range. The node B then adjusts the transmission time of the downlink DPCH according to the transmission time adjustment information and transmits the downlink DPCH at the adjusted time. The UE receives the downlink DPCH by adjusting a search time for the downlink DPCH according to the transmission time adjustment information.

REFERENCES:
patent: 6907248 (2005-06-01), Lee et al.
patent: 6961398 (2005-11-01), Dick et al.

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