Broadcast channel enhancement with polar code

A polar coding and coding technology, which is applied to adjust channel coding, coding, code conversion and other directions, and can solve problems such as reliability of different channels

Active Publication Date: 2018-09-25
MEDIATEK INC
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Problems solved by technology

However, different polar code bit channels have different channel reliability

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  • Broadcast channel enhancement with polar code
  • Broadcast channel enhancement with polar code
  • Broadcast channel enhancement with polar code

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no. 1 approach

[0037] However, the two NR-PBCH bit mapping design options conflict. In the first embodiment, the input bit index 253 is used for one SFN bit. In the second embodiment, the same input bit index 253 is used for one SSBI bit. In order to resolve this conflict, it is proposed based on the second embodiment that the input index 253 is reserved for one SSBI bit (for example, bit b3), while in the first embodiment, all other available input bit indexes in ascending order of reliability are proposed. Used for SFN and c0 bits. Such as Image 6 As depicted in block 620 of, for s1, s2, c0 and the remaining SFN bits, the encoder input bit indexes 441, 469, 247, 367, 375, 444, 470, 483, 415, 485, and 473 are selected respectively. Specifically, the input bit index 473 with the second worst channel reliability is used to replace the input bit index 253. Therefore, the 11 known bits of the PBCH are still mapped to the substantially least reliable bit channel of the polar encoder (for exam...

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Abstract

A method of new radio physical broadcast channel (NR-PBCH) bit mapping is proposed to improve for NR-PBCH decoding performance under Polar codes. NR-PBCH carries 32 information bits and 24 CRC bits. Specifically, NR-PBCH uses 512-bit Polar codes to carry total 56 data bits. Different Polar code bit channels have different channel reliability. As a general rule, the most reliable Polar code bit channels are used for the 56 data bits. In accordance with a novel aspect, within the 32 NR-PBCH information bits, some of the information bits that can be known to the decoders under certain conditionsand therefore are placed at the least reliable Polar code bit positions. As a result, by mapping the NR-PBCH data bits properly at the input bit positions of Polar codes, the NR-PBCH decoding performance is improved when the known bits a priori can be exploited.

Description

[0001] Cross references to related applications [0002] This application requires a U.S. Provisional Patent Application No. 62 / 443,851 filed on January 9, 2017 under the name "Broadcasting Channel Enhancement with Polar Code"; and under the name "NR PBCH Bit Position Design" filed on November 23, 2017 US provisional patent application with patent application number 62 / 590,278; priority of the US provisional patent application with patent application number 62 / 592,389 filed on November 29, 2017 under the name of “PBCH Bit Mapping Design Before First PBCHScrambling” The subject matter of each of the above documents is incorporated herein by reference. Technical field [0003] The disclosed embodiments relate to broadcast channel design, and more specifically, to the physical broadcast channel (PBCH) design using polarization codes in the next-generation 5G New Radio (NR) mobile communication network. Background technique [0004] Long Term Evolution (LTE) systems provide high peak d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/00
CPCH04L1/0057H04L2001/0093H04L1/0071H04L1/0041H04L1/007H04L1/0009H04L69/323
Inventor 吴威德戴嘉伟陈滔刘彦成李修圣陈威任
Owner MEDIATEK INC
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