Communication system, base station and communciation terminal

Abstract

A PDSCH of a legacy UE is mapped to physical resources per subframe, whereas a PDSCH of an LR-UE is mapped, per physical resource block (PRB) included in the subframe, to a region of the physical resources to which the PDSCH of the legacy UE is mapped. The PDSCH of the legacy UE may be also mapped to the physical resources per PRB pair including two physical resource blocks, whereas the PDSCH of the LR-UE may be mapped to the remaining physical resources excluding the PRB pairs to which the PDSCH of the legacy UE is mapped.

1 . A communication system configured to communicate using a subframe, slots included in the subframe, and symbols included in each of the slots, comprising:
 a base station configured to transmit first physical downlink shared channel scheduled by the subframe in time domain and second physical downlink shared channel scheduled by a slot in time domain; and   a communication terminal configured to receive the first physical downlink shared channel and the second physical downlink shared channel, wherein   a number of hybrid automatic repeat request processes in accordance with transmission time interval is applied.   
     
     
         2 . The communication system claimed in  claim 1 , wherein
 the second physical downlink shared channel is allocated in a plurality of frequency domains being non-consecutive in the slot.   
     
     
         3 . A base station in a communication system configured to communicate using subframe, slots included in the subframe, and symbols included in each of the slots, wherein
 the base station transmits first physical downlink shared channel scheduled by the subframe in time domain and second physical downlink shared channel scheduled by a slot in time domain, and   a number of hybrid automatic repeat request processes in accordance with transmission time interval is applied.   
     
     
         4 . The base station claimed in  claim 3 , wherein
 the second physical downlink shared channel is allocated in a plurality of frequency domains being non-consecutive in the slot.   
     
     
         5 . A communication terminal in a communication system configured to communicate using a subframe, slots included in the subframe, and symbols included in each of the slots, wherein
 the communication terminal receives first physical downlink shared channel scheduled by the subframe in time domain and second physical downlink shared channel scheduled by a slot in time domain, and   a number of hybrid automatic repeat request processes in accordance with transmission time interval is applied.   
     
     
         6 . The communication terminal claimed in  claim 5 , wherein
 the second physical downlink shared channel is allocated in a plurality of frequency domains being non-consecutive in the slot.