Radio base station apparatus, mobile terminal apparatus and radio communication method

Abstract

Provided are a radio base station apparatus, a mobile terminal apparatus and a radio communication method capable of taking other-cell interference mitigation measures even in consideration of inter-cell coordination like CoMP. The radio communication method according to the present invention is characterized by, in a radio base station apparatus, generating notification information including subframe information of a serving cell and subframe information of another cell; and transmitting the notification information to a mobile terminal apparatus connected to the serving cell as a connected cell; and in the mobile terminal apparatus, receiving the notification information including the subframe information of the connected cell and the subframe information of another cell; and measuring channel quality of the connected cell with use of the subframe information of the connected cell and measuring channel quality of another cell with use of the subframe information of another cell.

1 . A radio base station apparatus comprising:
 a generating section configured to generate notification information including subframe information of a cell and subframe information of another cell; and   a transmitting section configured to transmit the notification information to a mobile terminal apparatus connected to the cell as a connected cell.   
     
     
         2 . The radio base station apparatus of  claim 1 , wherein the subframe information of the another cell is transmitted in an individual signal. 
     
     
         3 . The radio base station apparatus of  claim 2 , wherein the subframe information of the another cell is transmitted with use of an RRC Connection Reconfiguration signal. 
     
     
         4 . The radio base station apparatus of  claim 1 , wherein the subframe information of the another cell is transmitted in a broadcast signal. 
     
     
         5 . The radio base station apparatus of  claim 1 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         6 . A mobile terminal apparatus comprising:
 a receiving section configured to receive notification information including subframe information of a connected cell and subframe information of another cell; and   a channel quality measuring section configured to measure channel quality of the connected cell with use of the subframe information of the connected cell and to measure channel quality of the another cell with use of the subframe information of the another cell.   
     
     
         7 . The mobile terminal apparatus of  claim 6 , wherein the receiving section receives the subframe information of the another cell in an individual signal. 
     
     
         8 . The mobile terminal apparatus of  claim 7 , wherein the receiving section receives the subframe information of the another cell together with an RRC Connection Reconfiguration signal. 
     
     
         9 . The mobile terminal apparatus of  claim 6 , wherein the receiving section receives a broadcast signal including the subframe information of the another cell. 
     
     
         10 . The mobile terminal apparatus of  claim 6 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         11 . A radio communication method comprising the steps of:
 in a radio base station apparatus,
 generating notification information including subframe information of a cell and subframe information of another cell; and 
 transmitting the notification information to a mobile terminal apparatus connected to the cell as a connected cell; and 
   in the mobile terminal apparatus,
 receiving the notification information including the subframe information of the connected cell and the subframe information of the another cell; and 
 measuring channel quality of the connected cell with use of the subframe information of the connected cell and measuring channel quality of the another cell with use of the subframe information of the another cell. 
   
     
     
         12 . The radio communication method of  claim 11 , wherein the subframe information of the another cell is transmitted in an individual signal. 
     
     
         13 . The radio communication method of  claim 12 , wherein the subframe information of the another cell is transmitted with use of an RRC Connection Reconfiguration signal. 
     
     
         14 . The radio communication method of  claim 11 , wherein the subframe information of the another cell is transmitted in a broadcast signal. 
     
     
         15 . The radio communication method of  claim 11 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         16 . The radio base station apparatus of  claim 2 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         17 . The radio base station apparatus of  claim 3 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         18 . The radio base station apparatus of  claim 4 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         19 . The mobile terminal apparatus of  claim 7 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         20 . The mobile terminal apparatus of  claim 8 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         21 . The mobile terminal apparatus of  claim 9 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         22 . The radio communication method of  claim 12 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         23 . The radio communication method of  claim 13 , wherein the subframe information includes CSI-RS non-transmission information and muting information. 
     
     
         24 . The radio communication method of  claim 14 , wherein the subframe information includes CSI-RS non-transmission information and muting information.