EP3672085

Unitary patent

DESIGN OF SHIFT VALUES FOR QUASI-CYCLIC LDPC CODES FOR 3GPP NEW RADIO

Filed

Jun 26, 2018

Technology

Electrical engineering · Basic communication processes +1

UPC cases

Ownership history

As recorded at the EPO. Transfers made after the opposition period are recorded in national registers and may be missing here.

Telefonaktiebolaget LM Ericssonsince May 22, 2020

Abstract

The application relates to the design of parity-check matrices of quasi-cyclic LDPC codes for wireless communications, in particular in the framework of 3GPP 5G or 3GPP New Radio. Base matrices of dimensions 46x68 and 42x52 are provided together with shift coefficients for shift sizes Z=3*2^j, j=0, 1, 2, 3, 4, 5, 6 and 7 and Z=7*2^j, j=0, 1, 2, 3, 4 and 5, respectively. The resulting parity check matrices are optimized according to two or more approximate cycle extrinsic message degree (ACE) constraints.

Litigation history

Date	Case	Division	Type	Outcome	Parties
Sep 14, 2026	UPC CFI 1571/2025	Paris CD	Infringement	Locked	Telefonaktiebolaget LM Ericsson +10

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