Communication system, communication method and communication apparatus

Abstract

When a base station and a plurality of terminal stations communicate with each other by radio, power control information for instructing electric power of a signal transmitted to the base station is multiplexed at the base station and transmission energy is adjusted such that total transmission energy of the multiplexed power control information becomes substantially a predetermined value if the total transmission energy of the multiplexed power control information is lower than the predetermined value. Therefore, information such as power control information that should be individually instructed to respective terminal stations can satisfactorily be transmitted by a simple arrangement and a simple processing.

1 . A communication system in which a base station and a plurality of terminal stations communicate by radio, comprising: 
 a base station having:    data processing means for processing data transmitted to each of said plurality of terminal stations;    reception power management means for providing power control information individually prepared for the plurality of terminal stations, wherein the power control information to each terminal station is used to control the corresponding terminal station, so that the corresponding terminal station increases a transmission electric power or decreases the transmission electric power    power control information processing means for generating the power control information for controlling a transmission of electric power at each of said terminal stations and adjusting a transmission energy such that a total transmission energy of multiplexed power control information becomes substantially a predetermined value when said total transmission energy of multiplexed power control information is lower than a predetermined threshold value; and    transmission processing means for multiplexing and transmitting signals processed by said data processing means and said multiplexed power control information processed by said power control information processing means; and    said plurality of terminal stations each have:    measuring means for measuring a communication state of a signal transmitted from said base station; and    transmission processing means for transmitting information on said communication state measured by said measuring means by electric power controlled based en upon said power control information transmitted from said transmission processing means of said base station.    wherein said base station includes communication connection setting means for rejecting a setting of a connection with each of said plurality of terminal stations when said total transmission energy obtained before said power control information multiplexed by said power control information processing means of said base station is adjusted is higher than said predetermined threshold value.    
   
   
       2 - 6 . (canceled)  
   
   
       7 . A communication method in which a base station and a plurality of terminal stations communicate by radio, comprising the steps of: 
 receiving power control information individually prepared for the plurality of terminal stations, wherein the power control information to each terminal station is used to control the corresponding terminal station, so that the corresponding terminal station increases a transmission energy or decreases the transmission energy    generating the power control information for controlling electric power for a signal transmitted to said base station from to said plurality of terminal stations;    adjusting transmission energy such that a total transmission energy of multiplexed power control information becomes substantially a predetermined value when said    total transmission energy of said multiplexed power control information is lower than a predetermined threshold value;    transmitting said multiplexed power control information from said base station to the said plurality of terminal stations; and    rejecting a setting of a connection with one of said terminal stations when said total transmission energy obtained before said multiplexed power control information is adjusted is higher than said predetermined threshold value.    
   
   
       8 - 12 . (canceled)  
   
   
       13 . A communication apparatus for communicating with a plurality of terminal stations by radio, comprising: 
 data processing means for processing data transmitted to each of said terminal stations;    reception power management means for providing power control information individually prepared for the plurality of terminal stations, wherein the power control information to each terminal station is used to control the corresponding terminal station, so that the corresponding terminal station increases a transmission electric power or decreases the transmission electric power    power control information processing means for individually generating the power control information for controlling transmission electric power at each of said terminal stations and adjusting a transmission energy such that a total transmission energy of multiplexed power control information becomes substantially a predetermined value when said total transmission energy of said multiplexed power control information is lower than a predetermined threshold value;    transmission processing means for multiplexing and transmitting a signal processed by said data processing means and said multiplexed power control information processed by said power control information processing means; and    communication connection setting means for rejecting a setting of a connection with another terminal station when said total transmission energy obtained before said power control information multiplexed by said power control information processing means is adjusted is higher than said predetermined threshold value.    
   
   
       14 - 18 . (canceled)