Communication system, base station and mobile terminal

Abstract

A mobile communication system includes a plurality of eNBs that perform radio communication with an UE and an MCE that controls the eNBs. The MCE indicates an MBSFN subframe (MCE) serving as radio resources that transmit a reference signal for power measurement to the UE less frequently than normal to the eNB, the eNB, in addition to the MBSFN subframe (MCE) indicated by the MCE, designates the MBSFN subframe (eNB) serving as the radio resources that transmit a reference signal to the UE less frequently than normal, and in the MBSFN subframe (MCE) and the MBSFN subframe (eNB) the reference signal is transmitted to the UE. In this manner, the reference signal for measuring a power can be transmitted less frequently than normal, and a power consumption of the infrastructure can be reduced.

1 : A communication system comprising a mobile terminal, abase station and a neighbor base station near the base station, in which multiplexing of channels for Multimedia Broadcast multicast service Single Frequency Network (MBSFN) and for non-MBSFN is performed,
 wherein the base station is configured to transmit neighbor base station information that is information on the neighbor base station and an MBSFN subframe for avoiding downlink interference, and   the mobile terminal is configured to perform measurement of the neighbor base station by using the neighbor base station information.   
     
     
         2 : The communication system according to  claim 1 ,
 wherein the MBSFN subframe for avoiding downlink interference is configured by the base station.   
     
     
         3 : The communication system according to  claim 1 ,
 wherein the base station is configured to transmit a number of a subframe to be used as the MBSFN subframe for avoiding downlink interference.   
     
     
         4 : The communication system according to  claim 1 ,
 wherein the neighbor base station information includes an MBSFN subframe configuration of the neighbor base station.   
     
     
         5 : A base station included in a communication system comprising a mobile terminal, the base station and a neighbor base station near the base station, in which multiplexing of channels for Multimedia Broadcast multicast service Single Frequency Network (MBSFN) and for non-MBSFN is performed,
 wherein the base station is configured to transmit, to the mobile terminal, neighbor base station information that is information on the neighbor base station and an MBSFN subframe for avoiding downlink interference.   
     
     
         6 : The base station according to  claim 5 ,
 wherein the MBSFN subframe for avoiding downlink interference is configured by the base station.   
     
     
         7 : The base station according to  claim 5 ,
 wherein the base station is configured to transmit a number of a subframe to be used as the MBSFN subframe for avoiding downlink interference.   
     
     
         8 : The base station according to  claim 5 ,
 wherein the neighbor base station information includes an MBSFN subframe configuration of the neighbor base station.   
     
     
         9 : A mobile terminal included in a communication system comprising the mobile terminal, a base station and a neighbor base station near the base station, in which multiplexing of channels for Multimedia Broadcast multicast service Single Frequency Network (MBSFN) and for non-MBSFN is performed,
 wherein the mobile terminal is configured to perform measurement of the neighbor base station by using neighbor base station information that is information on the neighbor base station and transmitted from the base station.