Frequency Domain Resource Allocation in 5G Unlicensed Bands

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Solution Overview

Problem

In 5G communications systems, the allocation of frequency domain resources in unlicensed bands for terminals is not accurately defined, leading to poor resource allocation accuracy.

Innovation Solution

A method for frequency domain resource allocation in a terminal, involving receiving a resource allocation indication corresponding to a parameter of a configured bandwidth part (BWP), and determining the indicated frequency domain resource within the BWP. Additionally, a network device sends a resource allocation indication to a terminal, indicating a frequency domain resource in the BWP.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If frequency domain resource allocation in unlicensed bands is not defined, then the system can operate without complex allocation rules, but resource allocation accuracy deteriorates

Engineering Contradiction:

Improveresource allocation accuracyVSAvoidallocation rule complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by introducing specific BWP parameters (subcarrier spacing, bandwidth, resource block indexing) to define frequency domain resource allocation. The resource allocation indication uses these parameters to precisely indicate frequency domain resources through standardized formulas and indexing methods, transforming the undefined allocation into a parameter-driven precise allocation system.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If traditional resource allocation methods are used without BWP-specific parameters, then the allocation process is simple, but the adaptability to different bandwidth parts deteriorates

Engineering Contradiction:

ImproveBWP configuration adaptabilityVSAvoidresource indication complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by making resource allocation parameters specific to each BWP configuration. Different BWPs can have different subcarrier spacings, bandwidths, and resource block indexing schemes. The resource allocation indication is locally adapted to each BWP's characteristics, allowing precise control of frequency domain resources tailored to specific BWP requirements rather than using a uniform allocation method.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies dynamics by enabling flexible BWP switching and dynamic resource allocation. The terminal can switch between different BWPs configured with various parameters, and the resource allocation indication dynamically adapts to the currently active BWP configuration. This allows the system to dynamically adjust frequency domain resource allocation based on different service requirements and channel conditions.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12245281B2Frequency domain resource allocation method, terminal, and network device

Publication Date: 2025.03.04 VIVO MOBILE COMM CO LTD

AI summary

A frequency domain resource allocation method, a terminal, and a network device are disclosed. The method includes: receiving a resource allocation indication, where the resource allocation indication corresponds to a parameter of a BWP configured for the terminal; and determining a frequency domain resource indicated by the resource allocation indication in the BWP.