Title:
TRANSMISSION POWER CONTROL METHOD, USER TERMINAL, AND BASE STATION
Document Type and Number:
WIPO Patent Application WO/2008/044528
Kind Code:
A1
Abstract:
A transmission power control method in a communication system includes a user terminal which performs transmission power control in a packet radio access and a base station. The method includes: a packet transmission step (S103) in which the user terminal transmits a packet; an interference level measuring step (S105) in which if the packet is a packet from other cell, the base station measures whether the interference by the packet exceeds a predetermined threshold value; a permission transmission step (S107) in which the base station generates transmission power control information for controlling the transmission power of the user terminal according to the interference measurement result and transmits the information to the user terminal; and a transmission power judgment step (S109) in which the user terminal judges whether to control the transmission power according to the transmission power control information when a packet retransmission packet is transmitted.
Inventors:
HIGUCHI KENICHI (JP)
SAWAHASHI MAMORU (JP)
SAWAHASHI MAMORU (JP)
Application Number:
PCT/JP2007/069213
Publication Date:
April 17, 2008
Filing Date:
October 01, 2007
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
HIGUCHI KENICHI (JP)
SAWAHASHI MAMORU (JP)
HIGUCHI KENICHI (JP)
SAWAHASHI MAMORU (JP)
International Classes:
H04B7/26; H04B1/04; H04B1/707; H04B1/7097; H04J13/00; H04W52/04; H04W52/24; H04W52/28; H04W52/48; H04W88/02
Foreign References:
| JP2006115410A | 2006-04-27 | |||
| JP2006222898A | 2006-08-24 | |||
| JP2006254426A | 2006-09-21 | |||
| JP2006272346A | 2006-10-12 |
Other References:
NTT DOCOMO ET AL.: "Pilot Sequence Allocation Method in E-UTRA Uplink", 3GPP TSG RAN WG1 MEETING #46, vol. R1-062103, September 2006 (2006-09-01), XP050111510
NTT DOCOMO ET AL.: "Transmission Power Control in E-UTRA Uplink", 3GPP TSG RAN WG1 MEETIN #47, vol. R1-063316, November 2006 (2006-11-01), XP050104882
See also references of EP 2068463A4
NTT DOCOMO ET AL.: "Transmission Power Control in E-UTRA Uplink", 3GPP TSG RAN WG1 MEETIN #47, vol. R1-063316, November 2006 (2006-11-01), XP050104882
See also references of EP 2068463A4
Attorney, Agent or Firm:
ITOH, Tadahiko (Yebisu Garden Place Tower20-3, Ebisu 4-chom, Shibuya-Ku Tokyo 32, JP)
Download PDF: