Title:
チャネル電力制御方法
Document Type and Number:
Japanese Patent JP2007500483
Kind Code:
A
Abstract:
In a telecommunication system ( 10 ) for providing multimedia broadcast services to many user equipments ( 40-45 ), a physical random access channel ( 39 ) is provided for uplink transmission of power control information from the user equipments to a radio site ( 30, 35 ). Based upon a comparison of signal-to-noise ratios ( 53 ) each particular user equipment sends ( 55 ) or inhibits from sending a power control signal to the radio site to which it is coupled. When the radio site of the telecommunication system detects a power control signal ( 73 ), the radio site adjusts the transmission power of a broadcast channel intended for reception by multiple user equipments ( 75 ) to be incrementally greater than the previous power ( 81 ). For lack of detection of a power control signal, adjusts the transmission power of a broadcast channel to be incrementally lower than the previous power.
Inventors:
Kai, Chi Chun
Harrison, Robert M.
Harrison, Robert M.
Application Number:
JP2006532412A
Publication Date:
January 11, 2007
Filing Date:
April 15, 2004
Export Citation:
Assignee:
MOTOROLA INCORPORATED
International Classes:
H04B7/26; H04B7/005; H04L12/56; H04W52/12; H04W52/14; H04W52/32; H04L12/18; H04W52/22; H04W52/24; H04W52/40; H04W52/50; H04W74/08
Attorney, Agent or Firm:
Mamoru Kuwagaki