Communication apparatus and communication method

A communication apparatus which can communicate a data packet and a recovery packet used to recover a data packet that failed to be communicated, the communication apparatus comprising:

• a determining unit configured to determine, when a first packet of a plurality of packets that failed to be communicated is normally communicated, a packet that can be recovered, from among the plurality of the packets that failed to be communicated based on the first packet and the normally communicated recovery packet;
• and
• a retransmit determination unit configured to determine a packet to be retransmitted with the first packet from the plurality of packets that failed to be communicated, except the packet that can be recovered.

A communication apparatus for packet communication, comprising:

• a determining unit configured to determine a packet that can be recovered when a first packet of a plurality of packets that failed to be communicated is normally communicated;
• and
• a retransmit determination unit configured to determine a retransmit packet so that at least a part of the plurality of packets that can be recovered is not retransmitted, when the first packet that is determined to recover a plurality of packets if it is normally communicated is retransmitted.

A method for communication performed by a communication apparatus which can communicate a data packet, a recovery packet used to recover a data packet that failed to be communicated, and a retransmit packet for the data packet that failed to be communicated, the method comprising:

• determining, when a first packet of a plurality of packets that failed to be communicated is normally communicated, a packet that can be recovered, from among the plurality of the packets that failed to be communicated based on the first packet and the normally communicated recovery packet;
• and
• determining not to retransmit at least a part of the plurality of packets that can be recovered, when the first data packet is retransmitted which is determined to recover a plurality of data packets if it is normally communicated.

A storage medium which stores a program to cause a computer which can communicate a data packet, a recovery packet used to recover a data packet that failed to be communicated, and a retransmitted packet for the data packet that failed to be communicated to execute a method comprising:

• determining, when a first packet of a plurality of packets that failed to be communicated is normally communicated, a packet that can be recovered, from among the plurality of the packets that failed to be communicated based on the first packet and the normally communicated recovery packet;
• and
• determining not to retransmit at least a part of the plurality of packets that can be recovered, when the first data packet is retransmitted which is determined to recover a plurality of data packets if it is normally communicated.

A communication method performed by a communication apparatus for packet communication, the method comprising:

• determining a packet that can be recovered when a first packet of a plurality of packets that failed to be communicated is normally communicated;
• and
• determining a retransmit packet so that at least a part of the plurality of packets that can be recovered is not retransmitted, when the first packet that is determined to recover a plurality of packets if it is normally communicated and retransmitted.