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Communication system and transmission station
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Inventors: Okajima, Ichiro; Maebara, Akihiro; Kobayashi, Katsumi; Sasada, Koji; Hattori, Hiroyuki;
Assignee: NTT Mobile Communications Network, Inc. (JP)
Primary Examiner: Nguyen; Hoa T.
Assistant Examiner:
Attorney, Agent or Firm: Brinks Hofer Gilson & Lione
In a communication system having a transmission station which transmits the data signal and a receiving station which receives the data signal, the transmission station consists of an adding means for adding an error detecting code showing a position of a transmission error, which occurs on said data signal, in said data signal to said data signal and a retransmission means for retransmission of a part in said data signal when said receiving station requests the retransmission of the part in said data signal. The receiving station consists of a judgment means for judging a position of the transmission error in said data signal on the basis of the error detecting code which is added by the adding means and a request means for requesting the retransmission of the part containing the transmission error in the data signal on the basis of the position of the transmission error. |
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DETAILED DESCRIPTION It is accordingly a primary object of the present invention to provide a communication system and a transmission station that are able to resolve the aforementioned problems.
In an aspect of the present invention, there is provided a communication system for the outstanding method having a transmission station which transmits a data signal and a receiving station which receives said data signal, wherein said transmission station consists of an adding means for adding error detecting code showing a position of a transmission error, which occurs on said data signal, in said data signal to said data signal, and a retransmission means for retransmitting a part in said data signal when said receiving station requests the retransmission of the part in said data signal, said receiving station consists of a judgment means for judging a position of said transmission error in said data signal on the basis of the error detecting code which is added by said adding means; and a request means for requesting the retransmission of the part containing said transmission error in said data signal on the basis of said position judged by said judgment means.
Furthermore, in an aspect of the present invention, there is provided a communication system according to claim 1, wherein said data signal has a plurality of units; said error detecting code is added to each of said plurality of units correspondingly, and said judgment means judges a position in said data signal of said unit containing said transmission error on the basis of said error detecting code.
Furthermore, in an aspect of the present invention, there is provided a transmission station for transmitting a data signal to a receiving station, wherein said data signal having an identification number, for identifying a number of the data signal and a plurality of information units; said transmission station consists of an adding means for adding an error detecting code according to each of said plurality of information units, a transmission means for transmitting a data signal which is added the error detecting code by said adding means to said receiving station, and a retransmission means for retransmitting an unit to said receiving station when said receiving station requests the retransmission of the unit in said data signal
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Multiplexer-related 
