Uplink Control Signal Decoding Order Optimization

Solution Overview

Problem

In MIMO systems, base stations and user equipment face challenges in determining the optimal decoding order for data streams, leading to suboptimal decoding performance without complex searches through all possible orders.

Innovation Solution

A wireless communications network and method that includes transmitting and receiving hybrid automatic repeat request (HARQ) acknowledgement information using cell-specific and user-equipment (UE) specific radio resource control (RRC) configurations, including resource offset parameters and RS base sequence parameters for the physical uplink control channel (PUCCH), allowing for improved decoding order determination based on strength-related characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If all possible decoding orders are searched to find the optimum order, then decoding performance is improved, but computational complexity increases

Engineering Contradiction:

Improvedecoding performanceVSAvoidcomputational complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-calculating and storing decoding prediction metrics for all possible decoding orders before actual data stream decoding occurs. These metrics, which represent strength-related characteristics of data streams, are computed in advance and stored in a lookup table, allowing the receiver to quickly retrieve and use the optimal decoding order without performing complex real-time calculations, thus achieving high decoding performance with reduced computational complexity during operation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements beforehand cushioning by pre-preparing decoding prediction metrics for all possible decoding orders and storing them in advance. This pre-computation acts as a cushion that eliminates the need for complex real-time searches during actual decoding operations, providing ready-to-use optimal decoding information that protects against computational complexity while maintaining high decoding performance

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Device complexity

If random or pre-determined decoding order is used, then computational complexity is reduced, but decoding performance deteriorates

Engineering Contradiction:

Improvecomputational complexityVSAvoiddecoding performance

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent applies preliminary action by pre-calculating and storing decoding prediction metrics for all possible decoding orders before actual data stream decoding occurs. These metrics, which represent strength-related characteristics of data streams, are computed in advance and stored in a lookup table, allowing the receiver to quickly retrieve and use the optimal decoding order without performing complex real-time calculations, thus achieving high decoding performance with reduced computational complexity during operation

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3998729A1System and method for an uplink control signal in wireless communication systems

Publication Date: 2022.05.18 SAMSUNG ELECTRONICS CO LTD

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AI summary

A user equipment is capable of receiving communications from a cell including at least one base station. The user equipment includes a receiver configured to receive from the base station both a cell specific radio resource control (RRC) configuration comprising a cell specific resource offset parameter for a PUCCH HARQ-ACK, and a UE specific RRC configuration comprising a UE specific RS base sequence parameter and an UE specific resource offset parameter for the PUCCH HARQ-ACK.