Grouping Control Resource Sets to Reduce Downlink Control Information Payload

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Solution Overview

Problem

In current wireless communication systems, the overhead of downlink control information is increased due to UE-specific configuration of additional resource sets, as resources scheduled by the PDCCH in each CORESET may be different, leading to inefficient use of control resources.

Innovation Solution

Configuring one or more additional resource sets corresponding to each group of control resource sets, rather than each individual CORESET, to reduce the payload of downlink control information and optimize resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If additional resource sets are configured for each individual CORESET to enable flexible resource allocation, then resource allocation flexibility is improved, but downlink control information overhead increases

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoiddownlink control information overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent merges the configuration of additional resource sets at the group level rather than individual CORESET level. Multiple CORESETs are grouped together, and a single additional resource set configuration serves the entire group, reducing redundant signaling while maintaining allocation flexibility within each group.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The additional resource set configuration is designed to be universal for a group of CORESETs. A single configuration indicates resource sets that can be applied across multiple CORESETs in the group, allowing the same resource set to serve multiple control resource sets simultaneously.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Loss of information

If downlink control information indicates all additional resource sets for each CORESET, then complete resource indication is achieved, but payload size increases

Engineering Contradiction:

Improveresource indication completenessVSAvoidpayload size

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent segments CORESETs into groups, where each group shares a common additional resource set configuration. This segmentation allows the system to indicate resource sets at the group level rather than individually for each CORESET, reducing the total number of indications needed while maintaining complete resource information within each segment.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If UE-specific additional resource sets are configured for multiple CORESETs, then individualized resource management is improved, but control resource efficiency decreases

Engineering Contradiction:

Improveindividualized resource managementVSAvoidcontrol resource efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent combines individualized resource management with group-level configuration. While each UE still receives customized resource set configurations, these are applied at the group level rather than individual CORESET level, improving control resource efficiency by reducing redundant signaling while maintaining UE-specific customization within the group context.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP3681220B1Resource configuration method, determination method, and device and communication system thereof

Publication Date: 2024.03.06 FUJITSU LTD

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Figure 3A
Figure 3B

AI summary

A resource configuration method, resource determination method, apparatuses thereof and communication system. The resource configuration apparatus comprises: a first configuring unit configured to configure one or more additional resource sets corresponding to each control resource set or each group of control resource sets. Hence, payload of downlink control information may be reduced, and currently existed problems may be solved.