Unified encoding method and system for LTE uplink control information

A technology of control information and coding method, applied in the field of unified coding of LTE uplink control information, can solve the problem of high system complexity, and achieve the effect of low decoding complexity and simplified coding/decoding structure

CN102299770AInactive Publication Date: 2011-12-28BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-12-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a united coding method and a united coding system for long term evolution (LTE) uplink control information (UCI), and belongs to the technical field of LTE channel coding. In the method, the channel coding of the UCI under different lengths is finished through the two-stage punching of a basic tail-biting convolutional code (TBCC) with the code rate of 1 / 5; and generators are selected at the first stage, and redundant code word bits are deleted at the second stage, namely when an LTE block code is replaced, the required generators at the first stage can be selected according to the size of the UCI and the determined punching pattern, and a code word with the code length of 20 or 32 is obtained according to the number and positions of the bits deleted at the second stage, and when the LTE TBCC is replaced, three original LTE generators are selected at the first stage, and the code word is not deleted at the second stage. The UCI on a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) is coded / decoded by the united method, so that a user side and a base station side are prevented from selecting various coding and decoding methods, and the coding / decoding structure of the system is simplified.
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Description

technical field

[0001] The invention relates to a unified encoding method and system for LTE uplink control information, and belongs to the technical field of long term evolution (Long Term Evolution, LTE) channel encoding. Background technique

[0002] LTE is a long-term evolution project of Universal Mobile Telecommunications System (UMTS), and is currently the most influential Beyond 3G (B3G) system, which can provide higher data rate, lower delay and more Large system capacity and coverage.

[0003] The uplink of LTE adopts single-carrier frequency division multiple access (Single-Carrier Frequency Division Multiple Access, SC-FDMA) as the basic transmission technology of the physical layer. SC-FDMA divides the transmission bandwidth into multiple parallel orthogonal subcarriers, and uses a cyclic prefix (Cyclic Prefix, CP) to maintain the orthogonality of the subcarriers in the frequency selective channel. According to the duration, CP can be divided into two types: r...

Examples

Embodiment

[0037] The method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] 1. LTE original encoding method:

[0039] When the UCI is transmitted on the PUCCH, a (20, A) block code is used for encoding. The code word of LTE's (20, A) block code is a linear combination of 13 base sequences, and these 13 base sequences are denoted as (M i，0 ,M i，1 ,...,M i，12 ),like Figure 9 shown. The codeword bits before encoding are denoted as a 0 , a 1 , a 2 ,...,a A-1 , and the encoded bits are denoted as b 0 , b 1 , b 2 ...,b B-1 , where B=20 is the number of codeword bits, and each codeword bit is calculated by the following formula:

[0040] b i = Σ n = 0 A - 1 ( a n ...