UE Bitmap Mapping for NR Sidelink Configured Grant Allocation

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Solution Overview

Problem

Existing wireless communication technologies face challenges in efficiently determining frequency domain resource allocation for sidelink communication, particularly in scenarios involving configured grants, which affect the reliability and efficiency of direct device-to-device communication.

Innovation Solution

A method for user equipment to determine a bitmap in frequency domain resource allocation type 0 for new radio uplink frequency domain resource allocation type 0, utilizing configuration information from a base station to accurately allocate resources for sidelink communication, including RBG size and BWP configuration, enabling precise resource block allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If frequency domain resource allocation type 0 is used for configured grant, then resource allocation flexibility is improved, but determination accuracy of bitmap correspondence deteriorates

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoiddetermination accuracy of bitmap correspondence

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent applies preliminary action by pre-defining the correspondence relationship between bitmap and frequencyDomainAllocation in the standard specification. The bitmap length is predetermined based on the number of RBGs, and the mapping rule is established in advance (first bit corresponds to first RBG, second bit to second RBG, etc.). This pre-established framework enables flexible resource allocation type 0 to work accurately with configured grants without requiring complex real-time determination procedures.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If dynamic scheduling is used for PUSCH transmission, then resource allocation efficiency is improved, but system complexity increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a unified resource allocation framework where frequency domain resource allocation type 0 can serve multiple purposes: both dynamic scheduling and configured grant (semi-persistent) scheduling. The same bitmap-based mechanism and determination procedures are used across different scheduling modes, reducing the need for separate handling logic and lowering overall system complexity while maintaining high resource allocation efficiency.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12484048B2Method performed by user equipment, and user equipment

Publication Date: 2025.11.25 SHARP KK

AI summary

Provided in the present invention are a method performed by user equipment and user equipment. The method includes: receiving first configuration information comprising configured grant information and transmitted by a base station gNB; receiving second configuration information transmitted by the base station gNB; and determining a correspondence between a bitmap of new radio uplink frequency domain resource allocation type 0 and frequency domain resource configuration information frequencyDomainAllocation.