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.

Abstract: A communication apparatus according to the invention can be applied to constitute each of relay nodes provided to constitute a novel communication network which avoids problems brought about by one or more bottlenecks formed in the communication network to result from the convergence of communication traffic induced in one or more relay nodes in the communication network. The communication apparatus comprises a temporary managing portion 16 for controlling a temporary memory means 15a, a main managing portion 18 for controlling a main memory means 17 and an operation control portion 20.

Abstract: A communication apparatus according to the invention can be applied to constitute each of relay nodes provided to constitute a novel communication network which avoids electric wave collision arising on a communication channel without carrying out “carrier sense” or operations for transmitting and receiving control information, such as “RTS”, “CTS”, and so no. The communication apparatus comprises a temporary managing portion 16 for controlling temporary memory means 15, a main managing portion 18 for controlling main memory means 17 and an operation control portion 20.

Abstract: A communication apparatus according to the invention can be applied to constitute each of relay nodes provided to constitute a novel communication network which avoids the problem that the traffic of adjunctive information other than the traffic of essential communication information increases undesirably so that communication efficiency in the communication network is lowered. The communication apparatus comprises 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.

Abstract: A system to remind a user of calls he should make, to prevent protracted negligence, comprises a telephone service server that generates a call-to-make reminder page based on the urgency of reminder identified by multiplying a non-contact period from the last call made to the person to contact as derived from communication logs by the level of necessity to maintain a close relationship as derived from profiles of the person to contact; and a user's telephone 12a equipped with a display unit to show the call-to-make reminder.

Abstract: A loop of transmission path (14) is formed by connecting, in a chain, communication stations (13) to which users (11, 12) having one or more terminals are connected. More direct communication is established when subscribers near to each other intercommunicate, for example, when a communication station and the party communication station belonging to the same transmission loop intercommunicate. Therefore no extra communication traffic is generated.

Abstract: A system to remind a user of calls he should make, to prevent protracted negligence, comprises a telephone service server that generates a call-to-make reminder page based on the urgency of reminder identified by multiplying a non-contact period from the last call made to the person to contact as derived from communication logs by the level of necessity to maintain a close relationship as derived from profiles of the person to contact; and a user's telephone 12a equipped with a display unit to show the call-to-make reminder.