Method for decreasing the frame error rate in data transmission in the form of data frames
First Claim
1. A method for decreasing frame error rate of information to be transmitted in the form of data frames in a data transmission system, in whichthe information to be transmitted is divided into data frames (102, 202), the data frame (102, 202) is supplemented with error detection data generated by using part of the information to be transferred, at least part of the information to be used in the generation of error detection data is protected by error correction coding (107, 206), by which an error correction coded data frame (111, 212) is obtained, in which at least some parts have different error rates (BER), and the error correction coded data frames (111, 212) are transferred in the data transmission channel from the transmitter to the receiver, wherein the error rates of at least one part of the protected information is levelled out by shaping at the transmission stage at least part of that information part (207) which is protected by error correction coding and which is used in the generation of the error detection data.
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Accused Products
Abstract
The invention relates to a method for decreasing the frame error rate of information to be transmitted in the form of data frames in a data transmission system, in which the information to be transmitted is divided into data frames (102, 202). The data frame (102, 202) is supplemented with error correction data generated by using part of the information to be transferred. At least part of the information to be used in the generation of error correction data is protected by error correction coding (107, 206), by which an error correction coded data frame (108, 207) is obtained, in which different parts of the protected information have different error rates (BER). The error correction coded data frames (111, 212) are transferred in the data transmission channel from the transmitter to the receiver. The error rates of at least one part of the protected information are levelled out by shaping at the transmission stage that information part (207) which is protected by error correction coding and which is used in the generation of the error correction data.
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Citations
11 Claims
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1. A method for decreasing frame error rate of information to be transmitted in the form of data frames in a data transmission system, in which
the information to be transmitted is divided into data frames (102, 202), the data frame (102, 202) is supplemented with error detection data generated by using part of the information to be transferred, at least part of the information to be used in the generation of error detection data is protected by error correction coding (107, 206), by which an error correction coded data frame (111, 212) is obtained, in which at least some parts have different error rates (BER), and the error correction coded data frames (111, 212) are transferred in the data transmission channel from the transmitter to the receiver, wherein the error rates of at least one part of the protected information is levelled out by shaping at the transmission stage at least part of that information part (207) which is protected by error correction coding and which is used in the generation of the error detection data.
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8. Data transmission system, in which information is transmitted in the form of data frames, the data transmission system comprising:
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means (101, 201) for distributing the information to be transmitted into data frames (102, 202), means (105, 205) for adding error detection data into the data frame (102, 202), and means (107, 206) for protecting at least part of the information to be used in the generation of error detection data with error correction coding in order to achieve an error correction coded data frame (108, 207), in which at least some parts have different error rates (BER), wherein the data transmission system further comprises means (208) for levelling out error rates of at least one part of the protected information. - View Dependent Claims (9, 10)
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11. Mobile station comprising:
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means (101, 201) for dividing the information to be transmitted into data frames (102, 202), means (105, 205) for adding error correction data into the data frame (102, 202), and means (107, 206) for protecting at least part of the information to be used in the generation of error detection data with error correction coding in order to achieve an error correction coded data frame (108, 207), in which at least some parts have different error rates (BER), wherein the mobile station comprises further means (208) for levelling out error rates of at least one part of the protected information.
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Specification