Title:
パイロット信号送信電力を設定する方法及び装置
Document Type and Number:
Japanese Patent JP4057920
Kind Code:
B2
Abstract:
The invention relates to a method and apparatus for setting pilot signal transit powers in a CDMA system. Subscriber units ( 211,213,215 ) perform pilot signal measurement measurements and transmits these to a receiver ( 603 ). A processor ( 605 ) determines a ranking factor for each cell ( 217, 219,221 ) at least partly dependent on the pilot signal measurement and a cell overlap condition of the subscriber unit ( 211, 213, 215 ) during measurements. The processor ( 605 ) ranks the cells ( 217,219,221 ) according to the ranking factor, and sets the pilot signal transmit power of at least one cell in response to the ranking of the cells by adjusting a power amplifier ( 609 ). The cell overlap condition is determined as the handover state of the subscriber unit ( 211,213,215 ) or as the number of cells, which can be received by the subscriber unit ( 211,213,215 ) during the measurement The invention is applicable to 3rd generation cellular communication systems.
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Inventors:
Dillon, Matthew James
Bourche, Simon
Murphy, chris
Hopkinson, Jonathan Nail
Bourche, Simon
Murphy, chris
Hopkinson, Jonathan Nail
Application Number:
JP2002587966A
Publication Date:
March 05, 2008
Filing Date:
February 25, 2002
Export Citation:
Assignee:
MOTOROLA INCORPORATED
International Classes:
H04B7/26; H04B1/707; H04B7/005; H04J13/00; H04W52/32
Foreign References:
| US6157668 |
Other References:
Dongwoo Kim et al.,Pilot Power Control and Service Coverage Support in CDMA Mobile Systems,IEEE Vehicular Technology Conference,米国,IEEE,1999年 5月16日,Vol.2,PP1464-1468
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hideo Tanaka
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hideo Tanaka