Wireless communication system, communication control method, radio base station, radio terminal, and storage medium

Abstract

Even when a radio terminal cannot receive contents data from a serving base station, the radio terminal can receive the contents data from other base station. A wireless communication system includes a radio terminal, a serving radio base station to which the radio terminal serves, and a non-serving radio base station to which the radio terminal does not serve. The serving radio base station receives, from the non-serving radio base station, contents-related information concerning contents data to be broadcasted or multicasted by said non-serving radio base station, and transmits the received contents-related information to the radio terminal.

1 . A radio station comprising:
 a first receiver configured to receive, from a neighbor radio station which operates a neighbor cell, Multimedia Broadcast multicast service Single Frequency Network (MBSFN) control information of the neighbor cell, wherein the MBSFN control information includes radio frame allocation information regarding one or more radio frames containing one or more MBSFN subframes and includes subframe allocation information regarding the one or more MBSFN subframes allocated for the MBSFN in the neighbor cell; and   a transmitter configured to transmit, to a radio terminal in a serving cell on a frequency managed by the radio station, neighbor cell configuration information related to a MBSFN subframe allocation in the neighbor cell of the frequency.   
     
     
         2 . The radio station according to  claim 1 , wherein the neighbor cell configuration information is transmitted on a Broadcast Control Channel (BCCH). 
     
     
         3 . The radio station according to  claim 2 , wherein the transmitter is further configured to transmit, to a radio terminal in a serving cell on a frequency managed by the radio station, a Physical Cell Identifier (PCI). 
     
     
         4 . A radio terminal in a serving cell on a frequency managed by a radio station, the radio terminal comprising:
 a receiver; and   a controller configured to control the receiver to receive neighbor cell configuration information related to a Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframe allocation in a neighbor cell of the frequency, wherein   the radio station is configured to receive, from a neighbor radio station which operates the neighbor cell, MBSFN control information of the neighbor cell, wherein the MBSFN control information includes radio frame allocation information regarding one or more radio frames containing one or more MBSFN subframes and includes subframe allocation information regarding the one or more MBSFN subframes allocated for the MBSFN in the neighbor cell.   
     
     
         5 . The radio terminal according to  claim 4 , wherein the neighbor cell configuration information is transmitted on a Broadcast Control Channel (BCCH). 
     
     
         6 . The radio station according to  claim 5 , wherein the transmitter is further configured to transmit, to a radio terminal in a serving cell on a frequency managed by the radio station, a Physical Cell Identifier (PCI). 
     
     
         7 . A method performed by a radio station, the method comprising:
 receiving, from a neighbor radio station which operates a neighbor cell, Multimedia Broadcast multicast service Single Frequency Network (MBSFN) control information of the neighbor cell, wherein the MBSFN control information includes radio frame allocation information regarding one or more radio frames containing one or more MBSFN subframes and includes subframe allocation information regarding the one or more MBSFN subframes allocated for the MBSFN in the neighbor cell; and   transmitting, to a radio terminal in a serving cell on a frequency managed by the radio station, neighbor cell configuration information related to a MBSFN subframe allocation in the neighbor cell of the frequency.   
     
     
         8 . A method performed by a radio terminal in a serving cell on a frequency managed by a radio station, the radio terminal comprising a receiver and a controller, the method comprising:
 controlling the receiver to receive neighbor cell configuration information related to a Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframe allocation in a neighbor cell of the frequency, wherein   the radio station is configured to receive, from a neighbor radio station which operates the neighbor cell, MBSFN control information of the neighbor cell, wherein the MBSFN control information includes radio frame allocation information regarding one or more radio frames containing one or more MBSFN subframes and includes subframe allocation information regarding the one or more MBSFN subframes allocated for the MBSFN in the neighbor cell.