US 11,108,497 B2Granted

Method and system for hierarchical decoding of data packets in cellular communication system

AssigneeSamsung Electronics Co., Ltd.

InventorsSatya Kumar Vankayala, RaviTeja Gundeti, Abhay Kumar Sah, Ashvin Kaithara Joseph, Seungil Yoon, Anshuman Nigam, Satya Venkata Uma Kishore Godavarti

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Abstract

Disclosed herein is method and system for hierarchical decoding of data packets in cellular communication network. At first, base station upon receiving data packets computes LLR values and evaluates computed LLR values through first Cyclic Redundancy Check (CRC) to determine successful decoding of data packets. When first CRC is unsuccessful and when SINR is greater than first predefined threshold, base station combines LLR values of intra base stations with computed LLR values for decoding data packets and performs second CRC check to determine if data packets are successfully decoded. The base station combines LLR values of intra base stations and LLR values of inter base stations with computed LLR values for decoding data packets when SINR value of inter base stations is greater than second predefined threshold and when evaluated second CRC is unsuccessful and performs third CRC. The present disclosure increases throughput and reduces latency significantly while decoding packets.

Claims20

Dependent claims

A method of hierarchical decoding of one or more data packets in a cellular communication system, the method comprising:

computing, by a base station in the cellular communication system, Log Likelihood Ratio (LLR) values for decoding one or more data packets received from a User Equipment (UE) in the cellular communication system;
evaluating, by the base station, the computed LLR values through a first Cyclic Redundancy Check (CRC) to determine whether the one or more data packets are successfully decoded;
combining, by the base station, LLR values of one or more intra base stations, associated with the base station, with the computed LLR values for decoding the one or more data packets when at least one of Signal-to-Interference-plus-Noise Ratio (SINR) value of each of the one or more intra base stations is greater than a first predefined threshold and when the evaluated first CRC is unsuccessful;
determining, by the base station, whether the one or more data packets are successfully decoded using the LLR values of the one or more intra base stations and the computed LLR values by evaluating through a second CRC;
combining, by the base station, the LLR values of one or more intra base stations and LLR values of one or more inter base stations, associated with the base station, with the computed LLR values for decoding the one or more packets when at least one of SINR value of each of the one or more inter base stations is greater than a second predefined threshold and when the evaluated second CRC is unsuccessful;
determining, by the base station, whether the one or more packets are successfully decoded using the LLR values of the one or more intra base stations, LLR values of the one or more inter base stations and the computed LLR values by evaluating through a third CRC;
and
receiving, by the base station, redundant version of the one or more data packets from the UE for decoding when the evaluated third CRC is unsuccessful.

5 more elements

A base station for hierarchical decoding of one or more data packets in a cellular communication system, the base station comprising:

Log Likelihood Ratio (LLR) computing module configured to compute LLR values for decoding one or more data packets received from one or more User Equipments (UE) associated with the base station;
Cyclic Redundancy Check (CRC) evaluation module configured to:
evaluate the computed LLR values through a first CRC to determine whether the one or more data packets are successfully decoded,
combine LLR values of one or more intra base stations, associated with the base station, with the computed LLR values for decoding the one or more data packets when at least one of Signal-to-Interference-plus-Noise Ratio (SINR) value of each of the one or more intra base stations is greater than a first predefined threshold and when the evaluated first CRC is unsuccessful,
determine whether the one or more data packets are successfully decoded using the LLR values of the one or more intra base stations and the computed LLR values by evaluating through a second CRC,
combine the LLR values of one or more intra base stations and LLR values of one or more inter base stations, associated with the base station, with the computed LLR values for decoding the one or more packets when at least one of SINR value of each of the one or more inter base stations is greater than a second predefined threshold and when the evaluated second CRC is unsuccessful, and
determine whether the one or more packets are successfully decoded using the LLR values of the one or more intra base stations, LLR values of the one or more inter base stations and the computed LLR values by evaluating through a third CRC;
and
receiving module configured to receive redundant version of the one or more data packets from the UE for decoding when the evaluated third CRC is unsuccessful.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/078,922Filed 23 Oct 2020
Priority: IN 20194104324724 Oct 2019
Published: US 2021/0126738 A129 Apr 2021
Granted: 31 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04L 1/0045
By using forward error control: arrangements at the receiver end
H04L 1/0054
Arrangements at the receiver end: maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
H04B 17/336
Measuring or estimating channel quality parameters: signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
H04L 1/0061
Systems characterized by the type of code used: error detection codes