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Transmitting and receiving system, transmitting equipment, and transmitting method

  • US 20070086403A1
  • Filed: 10/03/2006
  • Published: 04/19/2007
  • Est. Priority Date: 10/19/2005
  • Status: Abandoned Application
First Claim
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1. A transmitting and receiving system for exchanging, between a transmitter and a receiver, communication data indicating either a first data attribute or a second data attribute having a lower priority in communications than the first data attribute, wherein the transmitter includes:

  • a data input section for receiving the communication data, a first analysis section for determining a data attribute of the communication data received by the data input section, and a first transmitting section in which an allowable number of retransmissions for communication data indicating the second data attribute is limited, wherein if the first analysis section determines that the communication. data indicates the first data attribute, the first transmitting section transmits that communication data and requests that an acknowledgement signal be sent back, and if the first analysis section determines that the communication data indicates the second data attribute, the first transmitting section transmits that communication data and requests that the acknowledgement signal be sent back according to the allowable number of retransmissions;

    the receiver includes;

    a receiving section for receiving the communication data from the transmitter, a second analysis section for, when the receiving section receives the communication data, determining whether or not an acknowledgement signal for that communication data needs to be sent back, and a second transmitting section for, if the second analysis section determines that the acknowledgement signal needs to be sent back, sending back the acknowledgement signal;

    where the first transmitting section transmits the communication data indicating the first data attribute, if the acknowledgement signal is not sent back, the first transmitting section retransmits that communication data, and where the first transmitting section transmits the communication data indicating the second data attribute, the first transmitting section retransmits that communication data in accordance with the allowable number of retransmissions and presence or absence of the acknowledgement signal sent back; and

    the allowable number of retransmissions for the communication data indicating the second data attribute is smaller than that for the communication data indicating the first data attribute.

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