Communication system

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, the system comprising:
 a base station configured to transmit a physical downlink shared channel scheduled by a slot in a time domain; and   a communication terminal configured to receive the first physical downlink shared channel, wherein   one or more physical resource blocks (PRBs) are allocated for the physical downlink shared channel, and   the communication terminal is further configured to
 receive, from the base station, first information related to a start symbol for the physical downlink shared channel, and second information including at least information on a number of the PRBs for the physical downlink shared channel, and 
 receive the physical downlink shared channel from the base station by using the first information and the second information. 
   
     
     
         2 . The communication system claimed in  claim 1 , wherein
 the 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
 a physical downlink shared channel is scheduled by a slot in a time domain,   one or more physical resource blocks (PRBs) are allocated for the physical downlink shared channel, and   the base station is configured to
 transmit, to a communication terminal, first information related to a start symbol for the physical downlink shared channel, and second information including at least information on a number of the PRBs for the physical downlink shared channel, and 
 transmit the physical downlink shared channel to the communication terminal. 
   
     
     
         4 . The base station claimed in  claim 3 , wherein
 the 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
 a physical downlink shared channel is scheduled by a slot in a time domain,   one or more physical resource blocks (PRBs) are allocated for the physical downlink shared channel, and   the communication terminal is configured to
 receive, from a base station, first information related to a start symbol for the physical downlink shared channel, and second information including at least information on a number of the PRBs for the physical downlink shared channel, and 
 receive the physical downlink shared channel from the base station by using the first information and the second information. 
   
     
     
         6 . The communication terminal claimed in  claim 5 , wherein
 the physical downlink shared channel is allocated in a plurality of frequency domains being non-consecutive in the slot.   
     
     
         7 . The communication system claimed in  claim 1 , wherein
 the second information includes information on a smallest PRB number among the PRBs, and the information on the number of the PRBs, and   the communication terminal is further configured to receive downlink control information (DCI) including the second information.   
     
     
         8 . The communication system claimed in  claim 2 , wherein
 the communication terminal is further configured to receive, from the base station, downlink control information (DCI) including third information related to the plurality of frequency domains being non-consecutive.   
     
     
         9 . The base station claimed in  claim 3 , wherein
 the second information includes information on a smallest PRB number among the PRBs, and the information on the number of the PRBs, and   the base station is configured to transmit downlink control information (DCI) including the second information.   
     
     
         10 . The base station claimed in  claim 4 , wherein
 the base station is further configured to transmit, to the communication terminal, downlink control information (DCI) including third information related to the plurality of frequency domains being non-consecutive.   
     
     
         11 . The communication terminal claimed in  claim 5 , wherein
 the second information includes information on a smallest PRB number among the PRBs, and the information on the number of the PRBs, and   the communication terminal is further configured to receive downlink control information (DCI) including the second information.   
     
     
         12 . The communication terminal claimed in  claim 6 , wherein
 the communication terminal is further configured to receive, from the base station, downlink control information (DCI) including third information related to the plurality of frequency domains being non-consecutive.