Radio-communication control method and equipment

A management server which is connected, within a radio-communication system comprising a plurality of access points and a plurality of user terminals connected to a wired network through said access points, to a plurality of said access points for management of data transmission to a plurality of corresponding user terminals from each access point, comprising:

• a communication interface signal processing part for receiving, via a plurality of said access points, notification of the desired signal pair interference power ratio which is a ratio of the received power of the desired signal and interference signal at respective terminals of a plurality of said user terminals;
• a database for storing the information received with said communication interface signal processing part;
• and
• a transmitting control information calculation part for generating the transmitting control information to be transmitted to a plurality of said access points via said wired interface signal processing part, based on the information stored in said database,
• wherein said transmitting control information calculation part discriminates, based on said desired signal pair interference power ratio, a plurality of said user terminals as the user terminals in the non-interference domain and the user terminals in the interference domain, divides with time the transmission times from the access points to the user terminals in the non-interference domain and to the user terminals in the interference domain to respectively generate a first time period and a second time period, and transmits, to a plurality of said access points, the control signal to instruct the simultaneous communications, in said first time period, to a plurality of user terminals in the non-interference domain from a plurality of corresponding access points and the communications, through the time-division in a plurality of said access points, in said second time period, to the user terminals in the interference domain.

An access point for making radio-communications with a plurality of user terminals in a radio-communication system comprising a plurality of access point devices, a plurality of user terminals connected to the wired network via said access point devices, and a management server for management of data transmissions to a plurality of corresponding user terminals from a plurality of said access point devices, comprising:

• a synchronous timer for synchronization based on a synchronous signal received from said management server;
• and
• a transmission control part for controlling signal transmission to a plurality of said user terminals based on the transmitting control information transmitted from said synchronous timer and said management server,
• wherein a plurality of said user terminals are discriminated, based on the predetermined signal pair interference power ratio as the received power ratio of the desired signal and interference signal in respective user terminals, to the user terminals in the non-interference domain and the user terminals in the interference domain;
• and
• said transmitting control information divides with time the transmission times from the access points to the user terminals in the non-interference domain and the user terminals in the interference domain to respectively generate a first time period and a second time period and instructs a plurality of said access points to make simultaneous transmissions with the corresponding other access points to a plurality of user terminals in the non-interference domain in said first time period and to make communications through time-division with the other access points to the user terminals in the interference domain in said second time period.