Communication apparatus and communication method

• US 20090325505A1
• Filed: 08/31/2009
• Published: 12/31/2009
• Est. Priority Date: 09/06/2007
• Status: Active Grant

• Current Assignee: Hiroshi Katsuragawa, Shohei Yamada, Tatsushi Aiba
• Original Assignee: Hiroshi Katsuragawa, Shohei Yamada, Tatsushi Aiba
• Inventors: Yamada, Shohei, Aiba, Tatsushi, Katsuragawa, Hiroshi
• Granted Patent: US 9,264,202 B2
• Time in Patent Office: Days
• US Class Current: 455/67.13
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 25/022 of frequency response
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

A mobile communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that the base station apparatus transmits information for instructing transmission of reception quality information without uplink data included in an uplink data transmission permission signal, and the mobile station apparatus transmits reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data. This allows a mobile station apparatus to transmit reception quality information including a large amount of information even if there is no uplink data between the mobile station apparatus and the base station apparatus, and the transmission control flexibly responding to the amount of information and the frequency of transmissions of the reception quality information transmitted from the mobile station apparatus is possible. Therefore, more efficient communication control (scheduling) between the base station apparatus and the mobile station apparatus can be achieved.

Claims

1. A mobile communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that

the base station apparatus transmits, to the mobile station apparatus, an uplink data transmission permission signal including information for instructing transmission of reception quality information without uplink data,

the mobile station apparatus transmits, to the base station apparatus, reception quality information without uplink data in case that the information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal;

and

at this time, in case that ACK or NACK for downlink data needs to be transmitted, transmits, to the base station apparatus, reception quality information and ACK or NACK without uplink data, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.

2. The mobile communication system according to claim 1, characterized in that

the mobile station apparatus transmits, to the base station apparatus, the reception quality information and the ACK or NACK using a physical uplink shared channel.

5. The mobile communication system according to any one of claims 1 to 4, characterized in that

the second information includes HARQ redundancy version information.

6. The mobile communication system according to any one of claims 1 to 4, characterized in that

the second information includes MCS information.

7. The mobile communication system according to any one of claims 1 to 4, characterized in that

the second information includes transport block size information.

3. A mobile communication system in which a mobile station apparatus transmits reception quality information to a base station apparatus using a physical uplink shared channel, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that

the base station apparatus transmits, to the mobile station apparatus, an uplink data transmission permission signal including information for instructing transmission of reception quality information without uplink data,

the mobile station apparatus transmits, to the base station apparatus, reception quality information without uplink data in case that the information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal;

and

at this time, in case that ACK or NACK for downlink data needs to be transmitted, transmits, to the base station apparatus, reception quality information and ACK or NACK without uplink data, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.

4. A mobile communication system in which a mobile station apparatus transmits uplink data to a base station apparatus using a physical uplink shared channel assigned by an uplink data transmission permission signal, characterized in that

the base station apparatus transmits, to the mobile station apparatus, the uplink data transmission permission signal including information for instructing transmission of reception quality information without uplink data,

the mobile station apparatus transmits, to the base station apparatus, reception quality information without uplink data using the physical uplink shared channel in case that the information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal;

and

at this time, in case that ACK or NACK for downlink data needs to be transmitted, transmits, to the base station apparatus, reception quality information and ACK or NACK without uplink data, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.

8. A mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, the mobile station apparatus characterized by comprising:

an unit for receiving an uplink data transmission permission signal from the base station apparatus,

an unit for transmitting reception quality information without uplink data to the base station apparatus in case that information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal; and

in case that ACK or NACK for downlink data needs to be transmitted when transmitting reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data, the unit for transmitting the reception quality information to the base station apparatus transmits, to the base station apparatus, reception quality information and ACK or NACK without uplink data, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.

10. A mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits reception quality information to a base station apparatus using a physical uplink shared channel, the reception quality information indicating quality of a signal received from the base station apparatus, the mobile station apparatus characterized by comprising:

an unit for receiving an uplink data transmission permission signal from the base station apparatus

an unit for transmitting reception quality information without uplink data to the base station apparatus in case that information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal; and

in case that ACK or NACK for downlink data needs to be transmitted when transmitting reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data, the unit for transmitting the reception quality information to the base station apparatus transmits, to the base station apparatus, reception quality information and ACK or NACK without uplink data, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.

9. The mobile station apparatus according to claim 14, characterized in that

the unit for transmitting the reception quality information to the base station apparatus transmits, to the base station apparatus, the reception quality information and the ACK or NACK using a physical uplink shared channel.

12. The mobile station apparatus according to any one of claims 8 to 11, characterized in that

the second information includes HARQ redundancy version information.

13. The mobile station apparatus according to any one of claims 8 to 11, characterized in that

the second information includes MCS information.

14. The mobile station apparatus according to any one of claims 8 to 11, characterized in that

the second information includes transport block size information.

11. A mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits uplink data to a base station apparatus using a physical uplink shared channel assigned by an uplink data transmission permission signal, the mobile station apparatus characterized by comprising:

an unit for receiving the uplink data transmission permission signal from the base station apparatus

an unit for transmitting reception quality information without uplink data using the physical uplink shared channel to the base station apparatus in case that information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal; and

in case that ACK or NACK for downlink data needs to be transmitted when transmitting reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data, the unit for transmitting the reception quality information to the base station apparatus transmits, to the base station apparatus, reception quality information and ACK or NACK without uplink data, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.

15. A communication method of a mobile station apparatus in a mobile communication system in which the mobile station apparatus transmits uplink data to a base station apparatus using a physical uplink shared channel assigned by an uplink data transmission permission signal, the communication method characterized by comprising:

receiving the uplink data transmission permission signal from the base station apparatus;

transmitting reception quality information without uplink data using the physical uplink shared channel to the base station apparatus in case that information for instructing transmission of reception quality information without uplink data is included in the uplink data transmission permission signal; and

at this time, in case that ACK or NACK for downlink data needs to be transmitted, transmitting reception quality information and ACK or NACK without uplink data to the base station apparatus, wherein

the information for instructing transmission of reception quality information without uplink data is represented by using a first information for instructing transmission of reception quality information and a second information constituting the uplink data transmission permission signal.