Device

Abstract

A device including a measurement unit configured to perform measurement of each of one or more frequency bands that are a part of a plurality of frequency bands that are not used by a terminal device. The measurement unit does not perform measurement of each of the remaining frequency bands among the plurality of frequency bands or performs measurement of each of the remaining frequency bands at a frequency lower than a frequency of the measurements of each of the one or more frequency bands, which makes it possible to improve measurement performed by a terminal device.

1 - 16 . (canceled) 
     
     
         17 . A device comprising:
 a measurement unit configured to perform measurement of a first frequency band based on a discovery reference signal transmitted in the first frequency band within a first period included in a measurement gap and perform measurement of a second frequency band based on a reference signal transmitted in the second frequency band within a second period included in the measurement gap.   
     
     
         18 . The device according to  claim 17 ,
 wherein the measurement gap is an extended measurement gap.   
     
     
         19 - 21 . (canceled) 
     
     
         22 . The device according to  claim 17 ,
 wherein the reference signal transmitted in the second frequency band is a discovery reference signal.   
     
     
         23 . (canceled) 
     
     
         24 . The device according to  claim 17 ,
 wherein the measurement unit performs the measurement of the first frequency band that is used by the same base station based on a discovery reference signal and a cell-specific reference signal transmitted by the same base station in the first frequency band within the first period or performs the measurement of the second frequency band that is used by the same base station based on a discovery reference signal and a cell-specific reference signal transmitted by the same base station in the second frequency band within the second period.   
     
     
         25 . The device according to  claim 24 ,
 wherein at least one of the first period and the second period is a period shorter than 6 milliseconds.   
     
     
         26 . The device according to  claim 17 ,
 wherein the measurement unit performs measurement of a frequency group and measurement of one or more other frequency bands or measurement of one or more other frequency groups based on a priority of the frequency group including the first frequency band and the second frequency band and a priority of the one or more other frequency bands or a priority of the one or more other frequency groups.   
     
     
         27 - 28 . (canceled) 
     
     
         29 . The device according to  claim 17 ,
 wherein the measurement gap includes an additional period, and   the measurement unit performs measurement of an additional frequency band based on a discovery reference signal transmitted in the additional frequency band within the additional period.   
     
     
         30 . A device comprising:
 an acquiring unit configured to acquire information indicating a first frequency band in which a discovery reference signal is transmitted within at least a first period included in a measurement gap; and   a control unit configured to notify a terminal device of the first frequency band and the measurement gap.   
     
     
         31 . The device according to  claim 30 ,
 wherein the measurement gap further includes a second period in which a reference signal is transmitted in a second frequency band.   
     
     
         32 . The device according to  claim 30 ,
 wherein the measurement gap is an extended measurement gap.   
     
     
         33 . (canceled) 
     
     
         34 . The device according to  claim 30 ,
 wherein the acquiring unit acquires information indicating a frequency group including the first frequency band and a second frequency band, and   the control unit notifies a terminal device of the frequency group and the measurement gap.   
     
     
         35 - 36 . (canceled) 
     
     
         37 . A device comprising:
 an acquiring unit configured to acquire information about a first frequency band in which a discovery reference signal is transmitted; and   a control unit configured to decide an extended measurement gap including at least a part of a transmission period in which a discovery reference signal is transmitted in the first frequency band.   
     
     
         38 . The device according to  claim 37 ,
 wherein the control unit controls the transmission period such that at least a part of the transmission period is included in the extended measurement gap.   
     
     
         39 . The device according to  claim 37 ,
 wherein the information about the first frequency band includes information indicating the transmission period, and   the control unit decides the extended measurement gap based on the transmission period.   
     
     
         40 . A device comprising:
 an acquiring unit configured to acquire information about two or more frequency bands in which a discovery reference signal is transmitted; and   a control unit configured to decide a frequency group including at least a first frequency band and a second frequency band among the two or more frequency bands,   wherein the first frequency band is a frequency band in which a discovery reference signal is transmitted within at least a first period included in a measurement gap, and   the second frequency band is a frequency band in which a discovery reference signal is transmitted within at least a second period included in the measurement gap.   
     
     
         41 . The device according to  claim 40 ,
 wherein the control unit controls a transmission period in which a discovery reference signal is transmitted in the first frequency band such that the discovery reference signal is transmitted in the first frequency band within at least the first period, or controls a transmission period in which a discovery reference signal is transmitted in the second frequency band such that the discovery reference signal is transmitted in the second frequency band within at least the second period.   
     
     
         42 . The device according to  claim 40 ,
 wherein the information about the two or more frequency bands includes information indicating a transmission period in which a discovery reference signal is transmitted in each of the two or more frequency bands, and   the control unit decides the frequency group based on the transmission period.   
     
     
         43 . A device comprising:
 a measurement unit configured to perform first measurement of each of a plurality of frequency bands and perform second measurement of each of one or more frequency bands that are a part of the plurality of frequency bands,   wherein the first measurement is measurement that is performed based on a reference signal transmitted within a period having a first length, and   the second measurement is measurement that is performed based on a reference signal transmitted within a period having a second length that is greater than the first length.   
     
     
         44 . The device according to  claim 43 ,
 wherein the one or more frequency bands are frequency bands that are selected from among the plurality of frequency bands based on a result of the first measurement.   
     
     
         45 . (canceled) 
     
     
         46 . The device according to  claim 43 ,
 wherein the device is a terminal device or a module for the terminal device, and   each of the plurality of frequency bands is a frequency band that is not used by the terminal device.   
     
     
         47 - 50 . (canceled)