Information coding method, information decoding method, and devices

Abstract

The invention discloses an information coding method, an information decoding method, and devices. The information coding method comprises the following steps: an access network device generates a positive and inverse code, wherein the positive and inverse code comprises information bits and supervision bits located behind the information bits, if the number of preset values in the information bits is an even, the supervision bits are the inversion results of each bit of the information bits, and if the number of preset values in the information bits is an odd, the supervision bits are the same as the information bits, wherein the information bits are used to indicate the reception situations of the access network device for the uplink data transmitted by the terminal device, the receptionsituations comprise positive acknowledgement and negative acknowledgement, and the supervision bits are used to check the information bits; and the access network device sends the positive and inverse code. The information coding method reduces the error detection probability of ACK / NACK by introducing the positive and inverse code and a biased judgment criterion, therefore, the reliable transmission of the system is ensured.

Description

technical field [0001] The present application relates to the field of wireless communication, and in particular to an information encoding method, decoding method and device. Background technique [0002] In the LTE system, when the base station and the terminal send information to each other, either party can be the sender or the receiver. After receiving the information from the sender, the receiver needs to judge whether the information can be received correctly. If it is a retransmission feedback system, the receiver also needs to feed back the judgment result to the sender. Generally, in the feedback mechanism, if the receiver judges that the demodulation of the received information is correct, it will feed back information "1" to the sender; if it judges that the demodulation of the received information is wrong, it will feed back information "0". [0003] The information sent by the base station and the terminal can adopt a variety of encoding methods. For example, ...

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Problems solved by technology

[0004] For the above-mentioned various encoding methods, the encoding method of Turbo code or convolutional code is adopted. Since Turbo code or convolutional code does not have the function of judging whether the decoded data is correct, and the reliability of the information is not high when the encoding is short, only It can be judged whether the transmission decoding is correct by adding the CRC check code, resulting in a large encoding overhead

If Walsh coding is used, then in the case of poor channel conditions, it is impossible to judge whether the decoded information is correct, and thus the reliability of the transmitted information cannot be guaranteed.

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