Cellular system, mobile station, base station and...

Details Cellular system, mobile station, base station and... Cellular system, mobile station, base station and...

2008-03-18

2008-03-18

Duong, Frank (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C455S522000

Reexamination Certificate

active

07346034

ABSTRACT:
In a cellular system, each mobile station concurrently linked to plural link base stations in soft handover state and receiving packet from the packet-transmitting base station controls a transmission power of an up-link dedicated physical channel based on a first transmission power control information included in down-link dedicated physical channels of the link base stations. In other state, the mobile station controls the transmission power based on a second transmission power control information included in a down-link dedicated physical channel of the packet-transmitting base station. This accelerates the power increase up to a target power level causing that the measured signal-to-interference-ratio at the packet-transmitting base station reaches a target signal-to-interference-ratio, thereby improving receiving quality of control signal from the mobile station at the packet-transmitting base station.

REFERENCES:
patent: 11-261480 (2000-03-01), None
R1-02-0760, Simulation Results on HS-DPCCH power control, downloadable from the Internet, pp. 1-12, May 2002.
R1-02-1315, Modified TP for HS-DPCCH operation in SHO, downloadable from the Internet, pp. 1-5, Nov. 2002.
TSGR1-02-0719, HS-DPCCH Power Control in Soft-Handoff, downloadable from the Internet, pp. 1-12, May 2002.
Akhtar et al, A Comparative Study of Power Control Strategies for Soft Handover in UTRA FDD WCDMA System, IEEE, pp. 2680-2684, 2001.

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