Communication system

Abstract

A communication system is disclosed in which communication devices communicate with a base station using radio frames made up of a sequence of subframes and a frequency band made up of frequency subbands. The base station identifies a subframe in which a broadcast message, carrying information for at least one communication device, is to be broadcast; transmits, in a control channel, in a frequency subband in a current subframe that precedes the identified subframe, control information to identify said subframe in which said broadcast message is to be broadcast; and transmits the broadcast message in the identified subframe.

What is claimed is: 
     
         1 . A method performed by a user equipment (UE), the method comprising; communicating with a base station;
 receiving, from the base station, a physical downlink control channel (PDCCH) including Downlink Control Information (DCI) including first information related to at least one part of bandwidth to receive for physical downlink shared channel (PDSCH) and second information related to at least one subframe to receive for the PDSCH; and   receiving, in corresponding at least one subframe and on the corresponding at least one part of the bandwidth, the PDSCH based on the first information and the second information.   
     
     
         2 . The method according to  claim 1 , wherein the PDCCH for the UE is multiplexed with PDCCHs for other UEs. 
     
     
         3 . The method according to  claim 1 , wherein the PDSCH physical downlink shared channel for the UE includes a multiplexed data of other UEs. 
     
     
         4 . A method performed by a base station, the method comprising;
 communicating with a user equipment (UE);   transmitting, to the UE, a physical downlink control channel (PDCCH) including Downlink Control Information (DCI) including first information related to at least one part of bandwidth to transmit for physical downlink shared channel (PDSCH) and second information related to at least one subframe to transmit for the PDSCH; and   transmitting, in corresponding at least one subframe and on the corresponding at least one part of the bandwidth, the PDSCH based on the first information and the second information.   
     
     
         5 . A user equipment (UE) comprising;
 a controller; and a transceiver, wherein the controller is configured to:
 control the transceiver to communicate with a base station, 
 control the transceiver to receive, from the base station, a physical downlink control channel (PDCCH) including Downlink Control Information (DCI) including first information related to at least one part of bandwidth to receive for physical downlink shared channel (PDSCH) and second information related to at least one subframe to receive for the PDSCH, and 
 control the transceiver to receive, in corresponding at least one subframe and on the corresponding at least one part of the bandwidth, the PDSCH based on the first information and the second information. 
   
     
     
         6 . A base station comprising;
 a controller; and a transceiver, wherein the controller is configured to:
 control the transceiver to communicate with a user equipment (UE); 
 control the transceiver to transmit, to the UE, a physical downlink control channel (PDCCH) including Downlink Control Information (DCI) including first information related to at least one part of bandwidth to transmit for physical downlink shared channel (PDSCH) and second information related to at least one subframe to transmit for the PDSCH, and 
 control the transceiver to transmit, in corresponding at least one subframe and on the corresponding at least one part of the bandwidth, the PDSCH based on the first information and the second information.