PURPOSE: To improve the transmission efficiency and to reduce the communication end time and the wait time by revising the method for redundancy processing implemented to a sent data in response to the state of communication such as packet retransmission rate and distance between transmitter and receiver from a sender side.
CONSTITUTION: The sender side revises the redundancy processing method in response to the state of communication such as packet retransmission rate and distance between transmitter and receiver. Thus, the redundancy processing method with an excellent transmission efficiency is selected. In the most cases, it is possible to avoid the communication end time and the wait time by the redundancy processing method. Moreover, the revision of the redundancy processing method is informed to the receiver side and the receiver side decodes a reception packet according to the noticed redundancy processing method to attain normal communication.
ASANO MICHIO
ODAWARA HIROAKI
