Abstract: A communication apparatus having a temporary managing portion for controlling a temporary memory, a main managing portion for controlling a main memory and an operation control portion.

Abstract: A communication apparatus having a temporary managing portion for controlling a temporary memory, a main managing portion for controlling a main memory and an operation control portion. The operation control portion causes the temporary managing portion and the main managing portion to utilize the state information or the history and state information for obtaining probability of deletion or transmission and probability of delay with regard to each data frame of framed data for discharge and to control, on the basis of the obtained probability of deletion or transmission and the obtained probability of delay, deletion or transmission of the data frame of the framed data for discharge and delay for transmission of the data frame of the framed data for discharge on the occasion of the transmission thereof.

Abstract: A communication apparatus according to the invention can be applied to constitute each of relay nodes in a novel wireless communication network, in which the number of relaying stages formed with the relay nodes can be freely set without restriction by the amount of communication information to be processed, and consequently, a multistage-relayed communication extending over a long distance can be carried out to realize a long-distance communication.

Abstract: A communication apparatus in a relay node in a communication network includes an interface unit 12 and a core unit 13. Header data contained in framed data based on a communication signal from a signal receiving portion 21 is transmitted from the interface unit 12 to the core unit 13 and, in the core unit 13, a comparison between the header data and history data preserved in a history database are carried out and a flag responding to a result of the comparison is added to the header data, so that the header data having the flag is transmitted to the interface unit 12 from the core unit 13. In the interface unit 12, identification information in the original header data is changed in response to the flag and an output communication signal based on the framed data having the changed identification information is produced to be transmitted.

Abstract: A communication apparatus according to the invention can be applied to constitute each of relay nodes in a novel wireless communication network, in which the number of relaying stages formed with the relay nodes can be freely set without restriction by the amount of communication information to be processed, and consequently, a multistage-relayed communication extending over a long distance can be carried out to realize a long-distance communication.