Wireless communication system, mobile station device, and base station device

Abstract

A base station device includes: a control information generating section which generates control information specific to mobile station devices; a control information count indicator generating section which generates a control information count indicator indicating the number of pieces of generated control information of each mobile station device; and a transmitting section which transmits the control information count indicator and the control information. The mobile station device includes: a receiving section which receives a control information count indicator and control information transmitted from the base station device within a mobile station-specific search space selected based on a mobile station ID of the mobile station device; a control information count indicator detecting section which detects the control information indicator; and a control channel decoding section which decodes the control channel in response to the number of pieces of detected control information.

1 .- 19 . (canceled) 
     
     
         20 . A mobile station device which receives a downlink control channel, the downlink control channel including one or more control channel elements, the control channel element including a plurality of time/frequency resources,
 wherein, in connection with a domain including the plurality of control channel elements to which the downlink control channel is decoded, the mobile station device controls the number of the control channel elements which are included in the domain, the control being made in response to the number of the downlink control channel to which decoding and detecting are performed.   
     
     
         21 . A mobile station device which receives a downlink control channel at a plurality of frequency bands, the frequency band including a plurality of continuous subcarriers,
 wherein the mobile station device receives information indicating the number of the downlink control channel which includes control information of the mobile station device for each frequency band, and decodes the downlink control channel until the indicated number of the control information of the mobile station device are detected.   
     
     
         22 . The mobile station device according to  claim 21 ,
 wherein the information indicating the number of the downlink control channel indicates the number of the downlink control channel including each control information of the mobile station device in a time domain frame to which the information indicating the number of the downlink control channel is arranged.   
     
     
         23 . The mobile station device according to  claim 21 ,
 wherein a control channel element includes a plurality of time/frequency resources, and   wherein the information indicating the number of the downlink control channel is arranged to the predetermined number of control channel element.   
     
     
         24 . A wireless communication system comprising a plurality of mobile station devices and a base station device which transmits a transmission signal to a mobile station device, the transmission signal including a downlink control channel, the downlink control channel including one or more control channel elements, the control channel element including a plurality of time/frequency resources,
 wherein the base station device transmits a signal including the downlink control channel, the transmission is made using one or more control channel element in a domain, the domain including a plurality of control channel elements to which the downlink control channel is decoded, and   wherein, in connection with a domain including a plurality of control channel elements to which the downlink control channel is decoded, the mobile station device controls the number of the control channel element which is included in the domain, the control being made in response to the number of the downlink control channel to which decoding and detecting are performed, and decodes the downlink control channel in the domain.   
     
     
         25 . A wireless communication system comprising a plurality of mobile station devices and a base station device which transmits a transmission signal to a mobile station device, the transmission signal including a downlink control channel, the downlink control channel including one or more control channel elements, the control channel element including a plurality of time/frequency resources in a plurality of frequency bands, the frequency band including a plurality of continuous subcarriers,
 wherein the base station device transmits information and one or more downlink control channels, the information indicating the number of downlink control channel, the downlink control channel including control information of the mobile station device for each frequency band, and   wherein the mobile station device receives the information indicating the number of the downlink control channel which includes the control information of the mobile station device for each frequency band, and decodes the downlink control channel until the indicated number of the control information of the mobile station device are detected.   
     
     
         26 . A base station device which transmits a downlink control channel to a mobile station device in a plurality of frequency bands, the frequency band including a plurality of continuous subcarriers,
 wherein the base station device transmits information and one or more downlink control channels, the information indicating the number of the downlink control channel including control information of the mobile station device for each frequency band.