Communication System, Communication Apparatus and Communication Method
First Claim
1. A communication system in which an automatic retransmission control for a partial number bit string is executed, the communication system comprising:
- a transmitter configured to encode a number bit string to be transferred into the partial number bit string as a part of the number bit string and to transmit the encoded partial number bit string; and
a receiver configured to receive the partial number bit string and to decode the partial bit number string into the number bit string while shifting an interval that is a range of a partial number bit string decodable into the number bit string by using the received partial number bit string and a reference value shared by the transmitter and the receiver, whereinthe transmitter includes an encoding processor configured to perform the encoding for a future-direction interval associated with a partial number bit string to be transmitted after a newest partial number bit string while taking, as a reference, the newest partial number bit string that is the partial number bit string which the receiver has succeeded in receiving normally, andthe receiver includes a decoding processor configured to perform the decoding for a past-direction interval associated with a partial number bit string transmitted at least prior to the newest partial number bit string while taking the newest partial number bit string as the reference.
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Accused Products
Abstract
In an interpretation interval INTALL used in a communication system, there are provided a future-direction interval INTF associated with a 5-bit sequence number (LastSendAckNum) transmitted after LastSendAckNum ±0, and a past-direction interval INTP associated with a 5-bit sequence number (LastSendAckNum) transmitted prior to LastSendAckNum ±0. A transmitter side encodes a 13-bit sequence number into the 5-bit sequence number while setting, as an upper limit, the 5-bit sequence number associated with the future-direction interval INTF.
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Citations
15 Claims
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1. A communication system in which an automatic retransmission control for a partial number bit string is executed, the communication system comprising:
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a transmitter configured to encode a number bit string to be transferred into the partial number bit string as a part of the number bit string and to transmit the encoded partial number bit string; and a receiver configured to receive the partial number bit string and to decode the partial bit number string into the number bit string while shifting an interval that is a range of a partial number bit string decodable into the number bit string by using the received partial number bit string and a reference value shared by the transmitter and the receiver, wherein the transmitter includes an encoding processor configured to perform the encoding for a future-direction interval associated with a partial number bit string to be transmitted after a newest partial number bit string while taking, as a reference, the newest partial number bit string that is the partial number bit string which the receiver has succeeded in receiving normally, and the receiver includes a decoding processor configured to perform the decoding for a past-direction interval associated with a partial number bit string transmitted at least prior to the newest partial number bit string while taking the newest partial number bit string as the reference. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication apparatus configured to receive, from a communication destination, a partial number bit string as a part of a number bit string to be transferred, to decode the received partial number bit string into the number bit string while sequentially changing an interval as a range of a partial number bit string decodable into the number bit string by using the partial number bit string and a reference value shared with the communication destination, and to execute an automatic retransmission control for the partial number bit string, the communication apparatus comprising:
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a decoding processor configured to perform, while taking, as a reference, a newest partial number bit string as the partial number bit string which the communication apparatus has succeeded in receiving normally, the decoding for a past-direction interval at least from the newest partial number bit string, wherein the interval is composed of a future-direction interval associated with a partial number bit string transmitted after the newest partial number bit string, and the past-direction interval associated with a partial number bit string transmitted prior to the newest partial number bit string while taking the newest partial number bit string as the reference, and the past-direction interval has a length more than the future-direction interval. - View Dependent Claims (11, 12, 13, 14)
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8. A communication apparatus configured to receive a partial number bit string, which is a part of a number bit string to be transferred, from another different communication apparatus on a transmitter side that encodes and transmits the partial number bit string, to decode the received partial number bit string into the number bit string while sequentially shifting an interval that is a range of a partial number bit string decodable into the number bit string by using the received partial number bit string and a reference value shared with the different communication apparatus on the transmitter side, and to execute an automatic retransmission control for the partial number bit string, the communication apparatus comprising
an encoding processor configured to perform the encoding for a future-direction interval associated with a partial number bit string to be transmitted after a newest partial number bit string, while taking, as a reference, the newest partial number bit string that is the last partial number bit string which the different communication apparatus serving as the receiver has succeeded in receiving normally.
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15. A communication method for executing an automatic retransmission control for a partial number bit string that is a part of a number bit string to be transferred between a transmitter and a receiver, the method comprising the steps of:
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encoding the number bit string by the transmitter into the partial number bit string, and transmitting the encoded partial number bit string from the transmitter to the receiver; and decoding the received partial number bit string into the number bit string by the receiver while an interval is sequentially shifted, the interval being a range of a partial number bit string decodable into the number bit string by using the received partial number bit string and a reference value shared between the transmitter and the receiver, the communication method further comprising the steps of; performing the encoding by the transmitter for a future-direction interval associated with a partial number bit string to be transmitted after a newest partial number bit string, while taking, as a reference, the newest partial number bit string that is the last partial number bit string which the receiver has succeeded in receiving normally; and performing the decoding by the receiver for a past-direction interval associated with a partial number bit string transmitted at least prior to the newest partial number bit string while taking the newest partial number bit string as the reference.
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Specification