TRANSMISSION POWER CONTROL METHOD AND MOBILE STATION

Title:

TRANSMISSION POWER CONTROL METHOD AND MOBILE STATION

Document Type and Number:

WIPO Patent Application WO/2006/104208

Kind Code:

A1

Abstract:

An outer-loop transmission power control is periodically performed, thereby avoiding the degradation of radio quality that would otherwise be caused by interruptions of transmission of upstream user data. A transmission power control method comprises a step in which a radio network control station (RNC) decides a transmission period and notifies it to a mobile station (UE); a step in which if having no upstream user data to be transmitted via a data channel, the mobile station (UE) transmits an outer-loop control signal via the data channel at intervals of the transmission period; a step in which a radio base station (NodeB) determines the reception quality of the data channel and notifies a result of the determination to the radio network control station (RNC); a step in which the radio network control station (RNC) decides, based on the result of the determination, a transmission power offset in the data channel and notifies it to the mobile station (UE); and a step in which the mobile station (UE) uses the transmission power offset to control the transmission power of the upstream user data to be transmitted via the data channel.

Inventors:

USUDA MASAFUMI
UMESH ANIL
NAKAMURA TAKEHIRO

Application Number:

PCT/JP2006/306536

Publication Date:

October 05, 2006

Filing Date:

March 29, 2006

Export Citation:

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Assignee:

NTT DOCOMO INC (JP)
USUDA MASAFUMI
UMESH ANIL
NAKAMURA TAKEHIRO

International Classes:

H04B7/26; B60L3/00; B60L3/12; B60L50/15; H04J13/00; H04W52/02; H04W52/04; H04W52/12; H04W52/26; H04W52/60

Foreign References:

JP2003318818A	2003-11-07
JP2006140650A	2006-06-01
JP2006135485A	2006-05-25
JP2001136123A	2001-05-18

Other References: