Wireless communication apparatus

A wireless communication apparatus that cooperates with another wireless communication apparatus to relay data to a base station, the wireless communication apparatus comprising:

• a storage section that stores first data transmitted from the wireless communication apparatus and constituted by first initial transmission data including a systematic bit and first parity data including a parity bit;
• a receiving section that receives second initial transmission data transmitted from the another wireless communication apparatus, and the second initial transmission data including a systematic bit;
• the receiving section being configured to receive propagation quality information from the base station about propagation quality between the wireless communication apparatus and the base station, and also being configured to receive propagation quality information from the base station about propagation quality between the another wireless communication apparatus and the base station;
• a determination section that determines whether or not a difference in propagation quality between the base station and each of the wireless communication apparatuses is equal to or greater than a predetermined value based on the propagation quality between the base station and the wireless communication apparatus received from the base station and the propagation quality between the base station and the another wireless communication apparatus received from the base station;
• a data generating section that, when the determination section determines that the difference in the propagation quality between the base station and each of the wireless communication apparatuses is equal to or greater than the predetermined value, generates parity data of the first data, in which the difference in the propagation quality between the base station and each of the wireless communication apparatuses is reflected, and parity data of the second data, in which the difference in the propagation quality between the base station and each of the wireless communication apparatuses is reflected, from the first initial transmission data of the first data and the second initial transmission data transmitted from the another wireless communication apparatus;
• an interleave section that applies interleaving to the parity data of the first data generated by the data generating section and the parity data of the second data generated by the data generating section;
• and
• a transmitting section that transmits data which has been interleaved by the interleave section to the base station.

A wireless communication apparatus that cooperates with another wireless communication apparatus to relay data to a base station, the wireless communication apparatus comprising:

• a storage section that stores first data to be transmitted from the wireless communication apparatus;
• a receiving section that receives second data to be transmitted from the another wireless communication apparatus;
• the receiving section being configured to receive propagation quality information from the base station about propagation quality between the wireless communication apparatus and the base station, and also being configured to receive propagation quality information from the base station about propagation quality between the another wireless communication apparatus and the base station;
• a first determination section that determines whether or not a difference in the propagation quality between the base station and each of the wireless communication apparatuses is equal to or greater than a predetermined value based on the propagation quality between the base station and the wireless communication apparatus received from the base station and the propagation quality between the base station and the another wireless communication apparatus received from the base station;
• a second determination section that determines which of the propagation quality between the base station and the wireless communication apparatus and the propagation quality between the base station and the another wireless communication apparatus is satisfactory based on said determined difference;
• a data generating section that generates first parity data from the first data on the basis of the determination results of the first determination section and the second determination section, and generates second parity data from the second data on the basis of the determination results of the first determination section and the second determination section;
• a first interleave section that interleaves the first data and the second data;
• a second interleave section that interleaves the first parity data generated by the data generating section and the second parity data generated by the data generating section in accordance with information regarding the difference in the propagation quality between the base station and each of the wireless communication apparatuses;
• and
• a transmitting section that transmits at least a portion of the first data which has been interleaved, the second data which has been interleaved, the first parity data which has been interleaved, and the second parity data which has been interleaved to the base station.

A wireless communication method for relaying data to a base station by cooperating with another wireless communication apparatus, the wireless communication method comprising:

• storing first data to be transmitted from a local wireless communication apparatus in a storage device;
• receiving at least a portion of second data to be transmitted by the another wireless communication apparatus using a receiving section;
• obtaining a propagation quality indicator of propagation quality between the local wireless communication apparatus and the base station;
• obtaining a propagation quality indicator of propagation quality between the another wireless communication apparatus and the base station;
• automatically determining a difference of the propagation quality indicator of the propagation quality between the another wireless communication apparatus and the base station and the propagation quality indicator of the propagation quality of the local wireless communication apparatus and the base station using a determination section;
• compensating for at least a portion of the first data and the second data for cooperative relay in accordance with the difference of the propagation quality indicators using a relay data processing section;
• and
• transmitting data in which at least a portion of the first data and the second data has been compensated to the base station using a transmitting section, wherein
• said cooperative relay of the second data to the base station is provided by said wireless communication apparatus concurrent with the wireless communication apparatus performing wireless communication of the generated and stored first data.

A wireless communication method for relaying data to a base station by cooperating with another wireless communication apparatus, the wireless communication method comprising:

• storing first data transmitted from a local wireless communication apparatus and constituted by first initial transmission data including a systematic bit and first parity data including a parity bit in a storage device;
• receiving second initial transmission data transmitted from the another wireless communication apparatus, and the second initial transmission data including a systematic bit;
• receiving propagation quality between the local wireless communication apparatus and the base station using a receiving section;
• receiving propagation quality between the another wireless communication apparatus and the base station using the receiving section;
• determining whether or not a difference in the propagation quality between the base station and each of the wireless communication apparatuses is equal to or greater than a predetermined value based on the propagation quality between the base station and the local wireless communication apparatus received from the base station and the propagation quality between the base station and another wireless communication apparatus received from the base station using a determination section;
• generating parity data of the first data using a data generating section, in which the difference in the propagation quality between the base station and each of the wireless communication apparatuses is reflected, and parity data of the second data, in which the difference in the propagation quality between the base station and each of the wireless communication apparatuses is reflected, from the first initial transmission data of the first data and the second initial transmission data transmitted from the another wireless communication apparatus when it is determined that the difference in the propagation quality between the base station and each of the wireless communication apparatuses is equal to or greater than the predetermined value;
• applying interleaving to the parity data of the first data, in which the difference in the propagation quality between the base station and each of the wireless communication apparatuses is reflected and the parity data of the second data, in which the difference in the propagation quality between the base station and each of the wireless communication apparatuses is reflected using an interleaving section;
• and
• transmitting data which has been interleaved to the base station using a transmitting section.

A wireless communication method for relaying data to a base station by cooperating with another wireless communication apparatus, the wireless communication method comprising:

• storing first data to be transmitted from a local wireless communication apparatus in a storage device;
• receiving second data to be transmitted from the another wireless communication apparatus using a receiving section;
• receiving propagation quality between the wireless communication apparatus and the base station using the receiving section;
• receiving propagation quality between the another wireless communication apparatus and the base station using the receiving section;
• using a determining section for determining whether or not a difference in the propagation quality between the base station and each of the wireless communication apparatuses is equal to or greater than a predetermined value based on the propagation quality between the base station and the local wireless communication apparatus received from the base station and the propagation quality between the base station and the another wireless communication apparatus received from the base station;
• generating first parity data from the first data on the basis of the determination result using a data generating section;
• determining which of the propagation quality between the base station and the local wireless communication apparatus and the propagation quality between the base station and another wireless communication apparatus is satisfactory using another determining section;
• generating second parity data from the second data on the basis of the determination result using a data generating section;
• interleaving the first data and the second data using an interleaving section;
• interleaving the first parity data and the second parity data in accordance with information regarding the difference in the propagation quality between the base station and each of the wireless communication apparatuses using another interleaving section;
• and
• transmitting at least a portion of the first data which has been interleaved, the second data which has been interleaved, the first parity data which has been interleaved, and the second parity data which has been interleaved to the base station using a transmitting section.