Data transferring method, and communication system and program applied with the method
First Claim
1. A data communication system that transmits data through a transmission path between a transmission side apparatus and a reception side apparatus, wherein the transmission side apparatus comprises:
- a coding apparatus that creates redundantly-coded data from original data;
a transmitting apparatus that sends the coded data coded by the coding apparatus to the transmission path; and
a coding rate determining apparatus that sets and controls a coding rate in the coding unit, and the reception side apparatus comprises;
a receiving apparatus that receives the coded data sent through the transmission path;
a decoding apparatus that decodes the coded data received to obtain the original data; and
a loss rate estimating apparatus that measures the loss rate on the path of the coded data sent, and wherein the coding rate determining apparatus of the transmission side apparatus varies and controls the coding rate in the coding apparatus based on the loss rate obtained.
1 Assignment
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Accused Products
Abstract
Disclosed is a communication system that transmits data through a transmission path between a transmission side apparatus and a reception side apparatus, wherein the transmission side apparatus comprises a coding apparatus that creates redundantly-coded data from original data; a transmitting apparatus that sends the coded data coded by the coding unit to the transmission path; and a coding rate determining apparatus that sets and controls a coding rate in the coding unit, wherein the reception side apparatus comprises a receiving apparatus that receives the coded data sent through the transmission path; a decoding apparatus that decodes the original data from the coded data received; and a loss rate estimating apparatus that measures the loss rate on the path of the coded data sent, and wherein the coding rate determining apparatus of the transmission side apparatus varies and controls the coding rate in the coding apparatus based on the loss rate obtained.
34 Citations
11 Claims
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1. A data communication system that transmits data through a transmission path between a transmission side apparatus and a reception side apparatus, wherein
the transmission side apparatus comprises: -
a coding apparatus that creates redundantly-coded data from original data;
a transmitting apparatus that sends the coded data coded by the coding apparatus to the transmission path; and
a coding rate determining apparatus that sets and controls a coding rate in the coding unit, and the reception side apparatus comprises;
a receiving apparatus that receives the coded data sent through the transmission path;
a decoding apparatus that decodes the coded data received to obtain the original data; and
a loss rate estimating apparatus that measures the loss rate on the path of the coded data sent, and wherein the coding rate determining apparatus of the transmission side apparatus varies and controls the coding rate in the coding apparatus based on the loss rate obtained. - View Dependent Claims (2, 3, 4, 5)
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6. A data transferring method executing in a transmission side apparatus, a step of obtaining solutions by substituting original data together with predetermined constant data in simultaneous equations of the Boolean algebra and packet-transmitting a combination of the constant data and the solutions as coded data to a reception side apparatus, and in the reception side apparatus, a step of decoding the original data by substituting the constant data and the solutions obtained from the received coded data in the simultaneous linear equations, the method further comprising the steps of:
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in the reception side apparatus, obtaining the loss rate on the transmission path of the coded data received, and in the transmission side apparatus, varying and controlling the coding rate of the coded data based on the obtained loss rate. - View Dependent Claims (7)
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8. A program, in a transmission side apparatus, executing steps of obtaining solutions by substituting original data together with predetermined constant data in simultaneous equations of the Boolean algebra and packet-transmitting a combination of the constant data and the solutions as coded data to a reception side apparatus, and in a reception side apparatus, of decoding the original data by substituting the constant data and the solutions obtained from the received coded data in the simultaneous linear equations, wherein the program further executes the steps of in reception side apparatus, obtaining the loss rate on the transmission path of the coded data received;
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in the transmission side apparatus, varying and controlling the coding rate of the coded data based on the obtained loss rate. - View Dependent Claims (9)
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10. A data communication controlling apparatus for data transfer through a transmission path between a transmission side apparatus and a reception side apparatus, comprising:
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a decoding apparatus that decodes coded data received from the transmission side apparatus through the transmission path to obtain original data;
a loss rate estimating apparatus that measures a loss rate on the transmission path of the coded data; and
a loss rate transmitting apparatus that sends the loss rate to the transmission side apparatus.
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11. A communication controlling apparatus for data transfer through a transmission path between a transmission side apparatus and a reception side apparatus, comprising:
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a coding apparatus that creates redundantly-coded data from original data;
a coding rate determining apparatus that sets and controls the coding rate in the coding unit;
a transmitting apparatus that sends the coded data to the reception side apparatus; and
a loss rate receiving apparatus that receives the loss rate of the coded data from the reception side apparatus, wherein the coding rate determining apparatus varies and controls the coding rate in the coding apparatus based on the loss rate.
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Specification