5G CORESET Allocation via Time Position Signaling

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Solution Overview

Problem

In 5G systems, the existing method of directly indicating Control Resource Sets (CORESETs) through signaling leads to high network signaling overhead, which is inefficient.

Innovation Solution

Configuring time position information and position information of CORESETs, including the number of symbols occupied and start position, and transmitting this information to User Equipment (UE) using a preset table, allowing the UE to select the start position without direct CORESET indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the idle CORESET is directly indicated by signaling, then the UE can accurately acquire the CORESET information, but the signaling overhead of the network becomes large

Engineering Contradiction:

ImproveCORESET information accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential parameters needed to identify the CORESET (time position information and position information) from the complete CORESET configuration, transmitting only these key elements through signaling while the UE derives the complete CORESET information using preset tables. This reduces the amount of signaling data while maintaining accurate CORESET identification.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of the base station directly indicating the complete CORESET configuration through signaling, the patent inverts the approach by having the base station provide only time position information and position information, then the UE uses preset tables to determine the actual CORESET configuration. This inversion significantly reduces signaling overhead while preserving measurement precision.

Inventive Principle:

Principle #13The other way round (Inversion)

2Reliability

If the base station configures and transmits complete CORESET information, then the UE can monitor PDCCH accurately, but the complexity of signaling configuration increases

Engineering Contradiction:

ImprovePDCCH monitoring accuracyVSAvoidsignaling configuration complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the CORESET configuration into two parts: time position information and position information are transmitted through signaling, while the actual CORESET parameters are derived by the UE from preset tables. This segmentation reduces signaling configuration complexity while maintaining PDCCH monitoring accuracy through the structured two-stage configuration approach.

Inventive Principle:

Principle #1Segmentation

3Manufacturing precision

If the UE receives detailed CORESET indication through signaling, then the time-frequency resource allocation is precise, but the network resource consumption increases

Engineering Contradiction:

Improvetime-frequency resource allocation precisionVSAvoidnetwork resource consumption

Core Design Contradiction:

Manufacturing precisionVSLoss of energy

Solution Approach 1:

The patent introduces preset tables as an intermediary between the base station and UE. The base station transmits only time position information and position information through signaling, and the UE uses these as keys to look up the actual CORESET configuration in the preset tables. This intermediary mechanism maintains precise time-frequency resource allocation while significantly reducing network resource consumption for signaling.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11323226B2Method for allocating control resource set, method for acquiring control resource set, base station, user equipment and readable medium

Publication Date: 2022.05.03 SPREADTRUM COMMUNICATION (SHANGHAI) CO LTD

AI summary

Method for allocating CORESET, method for acquiring CORESET, base station, UE and readable mediums are provided. The method for allocating CORESET includes: configuring time position information of at least one CORESET, the time position information including the number of symbols occupied by the at least one CORESET and a start position of the at least one CORESET, the symbols including symbols in a numerology used by the at least one CORESET; configuring position information of the at least one CORESET in a system frame number; and transmitting the time position information and the position information of the at least one CORESET to the UE, so that the UE selects the start position of the at least one CORESET based on the time position information and the position information. The base station doesn't need to directly indicate the CORESET, which reduces overhead of signaling indicating CORESET.