Device and method for base stations dynamic clustering in mobile communication

A communication method for use in a communication system comprising a plurality of mobile terminals, a plurality of base stations each of which provides services to each mobile terminal, and a communication control device that has a memory in which a channel state information table is stored and performs control for the base stations, said communication method comprising the steps of:

• receiving, by said communication control device, channel state information reported by all of the base stations for updating the channel state information table with the received information;
• triggering, by said communication control device, dynamic base station clustering scheduling when the dynamic clustering operation timer times out;
• retrieving channel state information generated between related mobile terminals and all base stations from said channel state information table for configuring a channel state information matrix;
• calculating an interference weight between each two of said mobile communication base stations based on each element of the channel state information matrix for configuring a dynamic base station clustering diagram;
• obtaining clustering parameters of all clustering possibilities based on a number of base stations in an arranged cluster of the base stations;
• continuously performing clustering having minimum clustering parameters until all of said base stations belong to a base station clustering and determining possibilities to make the clustering an efficient clustering;
• transmitting, by said communication control device, the clustering result to all of the base stations to allow the base stations to transfer the clustering result to the mobile terminals;
• and
• providing services, by each base station, to said base station based on the clustering result.

A communication system comprising a plurality of mobile terminals, a plurality of base stations that provide services to each mobile terminal, and a communication control device that performs control for the base stations wherein

• said mobile terminal periodically transmits communication state information with each base station to said each base station and
• said communication control device comprises:
• an interface that is linked to the plurality of base stations to receive channel state information on mobile terminals from each of said base stations;
• a memory that stores the channel state information on mobile terminals received from said interface;
• and
• a control unit that performs dynamic clustering for each of said base stations based on the channel state information on mobile terminals stored in said memory,
• wherein, when dynamic clustering is performed by said control unit,
• channel state information between related mobile terminals and all base stations is retrieved from said memory for configuring a channel state information matrix;
• an interference weight between each two of said base stations is calculated based on each element of the channel state information matrix for configuring a dynamic base station clustering diagram;
• clustering parameters of all clustering possibilities are obtained based on a number of base stations in an arranged cluster of the base stations;
• clustering having minimum clustering parameters is continuously performed until all of said base stations belong to a base station clustering and determining possibilities to make the clustering an efficient clustering;
• and
• the clustering result is transmitted to all of said base stations.