Channel quality information reporting method, base station apparatus, and communication terminal

A communication terminal comprising:

• a receiving section that receives allowable delay information indicating a size of an allowable delay of the communication terminal;
• a channel quality information generating section that generates channel quality information which is used as a reference when a base station apparatus assigns a resource based on the allowable delay information;
• and
• a channel quality information reporting section that reports the generated channel quality information, wherein, during a communication in which a delay is allowable, the channel quality information generating section reduces an amount of the channel quality information reported to the base station apparatus, based on the allowable delay information, compared to an amount of the channel quality information reported during a communication in which the delay is not allowable,
• wherein the channel quality information generating section generates the channel quality information for each resource of all resources during the communication in which the delay is not allowable, and generates the channel quality information for each of a plurality of resource groups dividing all the resources during the communication in which the delay is allowable.

A base station apparatus comprising:

• a receiving section that receives channel quality information which is transmitted from a communication terminal and used as a reference for determining resource assignment;
• a resource assigning section that performs the resource assignment based on the channel quality information;
• a transmitting section that transmits data to the communication terminal based on the resource assignment;
• and
• an instructing section that issues an instruction about an amount of the channel quality information, which is to be reported, to the communication terminal, based on a size of an allowable delay of the communication terminal,
• wherein the instructing section instructs a first communication terminal that performs a communication in which a delay is allowable to reduce an amount of the channel quality information to be transmitted based on the size of the allowable delay, compared to an amount of the channel quality information to be transmitted by a second communication terminal that performs a communication in which the delay is not allowable, and
• the instructing section instructs the second communication terminal that performs the communication in which the delay is not allowable, to report the channel quality information for each resource of all resources, and instructs the first communication terminal that performs the communication in which the delay is allowable, to report the channel quality information for each of a plurality of resource groups dividing all the resources.