Radio communication system, base station device and mobile station device utilizing an intermittent reception

Abstract

With communication service considered, it is an object to provide a communication system in which power consumption of a mobile station device is suppressed. This mobile communication system includes a base station device and a mobile station device, wherein the base station device includes a scheduling portion that carries out scheduling to determine a downlink CQI effective period scheduled by using the downlink CQI as a downlink effective period, start the downlink effective period after a lapse of a given period from downlink CQI transmission timing, and allow the mobile station device to transmit control information and user data only during the downlink effective period.

The invention claimed is: 
     
       1. A radio communication system comprising:
 a base station device; and   a mobile station device,   the base station device configured to:
 communicate with the mobile station using a plurality of time slots of a frame, each slot being able to include at least a first part for a downlink control channel and a second part for a downlink shared data channel, 
 variably set a periodic period during which the mobile station device is to be enabled to receive, in the first part in each slot, the downlink control channel containing radio resources scheduling information on radio resources for a downlink data channel in the same time slot in which the control channel is placed, 
 variably set an interval between the start of the period and the start of a next period, and 
 transmit the period and the interval together in a single RRC message to the mobile station device, and 
   the mobile station device including a radio portion that receives the RRC message and a DRX control portion that sets the interval and the period of execution of a reception process on the downlink control channel containing radio resources scheduling information, based on the RRC message.   
     
     
       2. A base station device that communicates with a mobile station device using a plurality of slots, each slot being able to include at least a first part for a downlink control channel and a second part for a downlink shared data channel, the base station device comprising:
 circuitry configured to:
 variably set a periodic period during which the mobile station device is enabled to receive, in the first part in each slot, the downlink control channel containing radio resources scheduling information on radio resources for a downlink data channel in the same time slot in which the control channel is placed, 
 variably set an interval between the start of the period and the start of a next period, and 
 transmit the interval and the period together in a single RRC message to the mobile station device. 
   
     
     
       3. A mobile station device that communicates with a base station device using a plurality of slots, each slot being able to include at least a first part for a downlink control channel and a second part for a downlink shared data channel, the mobile station device comprising:
 a radio portion that receives from the base station an RRC message containing a periodic period during which the mobile station device is enabled to receive, in the first part in each slot, the downlink control channel containing radio resources scheduling information on radio resources for a downlink data channel in the same time slot in which the control channel is placed from the base station device, and an interval between the start of the period and the start of a next period; and   a DRX control portion that sets the interval and the period of execution of a reception process on the downlink control channel containing radio resources scheduling information, based on the RRC message, the period and the interval each being variably determined by the base station.   
     
     
       4. A mobile station device that communicates with a base station device using a plurality of time slots, the mobile station device comprising:
 radio circuitry configured to receive from the base station device a radio resource control (RRC) message including a length of a time period during which the mobile station device is enabled to receive a downlink control channel and a time interval between the start of a time period and the start of a next time period,   wherein each time slot is able to include at least a downlink control channel and a downlink shared data channel, and   the downlink control channel carries radio resources scheduling information regarding radio resource for the downlink data channel in the same time slot where the downlink control channel is included; and   DRX control circuitry configured to set the time interval and the time period for a reception process on the downlink control channel, based on the RRC message, the time period and the time interval each being variably configured by the RRC message.   
     
     
       5. The mobile station device of claim 4, wherein the radio circuitry is further configured to transmit a downlink channel quality indicator (CQI) and a response to user data in a same time slot. 
     
     
       6. The mobile station device of claim 4, wherein the radio circuitry is further configured to transmit a downlink channel quality indicator (CQI) and an uplink scheduling request in a same time slot. 
     
     
       7. The mobile station device of claim 4, wherein the radio circuitry is further configured to transmit a downlink channel quality indicator (CQI) and an uplink pilot in a same time slot. 
     
     
       8. The mobile station device of claim 4, wherein the radio circuitry is further configured to transmit a downlink channel quality indicator (CQI) and uplink data in a same time slot. 
     
     
       9. A base station device that communicates with a mobile station device using a plurality of time slots, the base station device comprising:
 radio circuitry configured to transmit to the mobile station device a radio resource control (RRC) message including a length of a time period during which the mobile station device is enabled to receive a downlink control channel and a time interval between the start of a time period and the start of a next time period,   wherein each time slot is able to include at least a downlink control channel and a downlink shared data channel, and   the downlink control channel carries radio resources scheduling information regarding radio resource for the downlink data channel in the same time slot where the downlink control channel is included; and   scheduling circuitry configured to set the time interval and the time period for a reception process on the downlink control channel on the mobile station device, based on the RRC message, the time period and the time interval each being variably configured by the RRC message.   
     
     
       10. The base station of claim 9, wherein the radio circuitry is further configured to receive a downlink channel quality indicator (CQI) and a response to user data from the mobile station device in a same time slot. 
     
     
       11. The base station of claim 9, wherein the radio circuitry is further configured to receive a downlink channel quality indicator (CQI) and an uplink scheduling request from the mobile station device in a same time slot. 
     
     
       12. The base station of claim 9, wherein the radio circuitry is further configured to receive a downlink channel quality indicator (CQI) and an uplink pilot from the mobile station device in a same time slot. 
     
     
       13. The base station of claim 9, wherein the radio circuitry is further configured to receive a downlink channel quality indicator (CQI) and uplink data from the mobile station device in a same time slot. 
     
     
       14. A method performed by a mobile station device that communicates with a base station device using a plurality of time slots, the method comprising;
 receiving from the base station device a radio resource control (RRC) message including a length of a time period during which the mobile station device is enabled to receive a downlink control channel and a time interval between the start of a time period and the start of a next time period,   wherein each time slot is able to include at least a downlink control channel and a downlink shared data channel, and   the downlink control channel carries radio resources scheduling information regarding radio resource for the downlink data channel in the same time slot where the downlink control channel is included; and   setting the time interval and the time period for a reception process on the downlink control channel, based on the RRC message, the time period and the time interval each being variably configured by the RRC message.   
     
     
       15. The method of claim 14, further comprising: transmitting a downlink channel quality indicator (CQI) and a response to user data in a same time slot. 
     
     
       16. The method of claim 14, further comprising: transmitting a downlink channel quality indicator (CQI) and an uplink scheduling request in a same time slot. 
     
     
       17. The method of claim 14, further comprising: transmitting a downlink channel quality indicator (CQI) and an uplink pilot in a same time slot. 
     
     
       18. The method of claim 14, further comprising: transmitting a downlink channel quality indicator (CQI) and uplink data in a same time slot. 
     
     
       19. A method performed by a base station device that communicates with a mobile station device using a plurality of time slots, the method comprising:
 transmitting to the mobile station device a radio resource control (RRC) message including a length of a time period during which the mobile station device is enabled to receive a downlink control channel and a time interval between the start of a time period and the start of a next time period,   wherein each time slot is able to include at least a downlink control channel and a downlink shared data channel, and   the downlink control channel carries radio resources scheduling information regarding radio resource for the downlink data channel in the same time slot where the downlink control channel is included; and   setting the time interval and the time period for a reception process on the downlink control channel on the mobile station device, based on the RRC message, the time period and the time interval each being variably configured by the RRC message.   
     
     
       20. The method of claim 19, further comprising: receiving a downlink channel quality indicator (CQI) and a response to user data from the mobile station device in a same time slot. 
     
     
       21. The method of claim 19, further comprising: receiving a downlink channel quality indicator (CQI) and an uplink scheduling request from the mobile station device in a same time slot. 
     
     
       22. The method of claim 19, further comprising: receiving a downlink channel quality indicator (CQI) and an uplink pilot from the mobile station device in a same time slot. 
     
     
       23. The method of claim 19, further comprising: receiving a downlink channel quality indicator (CQI) and uplink data from the mobile station device in a same time slot.