5G NR Resource Allocation Signaling Overhead Reduction

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Solution Overview

Problem

The 5G new radio (NR) system's dynamic multiplexing of time domain resources for data and control channels increases complexity and results in significant unnecessary control signaling overhead in base stations and terminal devices.

Innovation Solution

The method involves the terminal device receiving partial frequency domain resource indication information, where the same time domain resource is used across multiple frequency domain units for uplink/downlink channels, reducing the need for individual resource indications in each frequency domain unit, thereby minimizing control signaling overhead and complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If dynamic multiplexing of time domain resources for data and control channels is implemented through DCI indication, then resource utilization is improved and time delay is shortened, but device complexity increases and control signaling overhead becomes large

Engineering Contradiction:

Improveresource utilizationVSAvoidbase station and terminal device complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the frequency domain resources into two parts: a first part where time domain resources are indicated by DCI, and a second part where time domain resources are determined by preset rules. This segmentation allows dynamic control where needed while reducing signaling overhead in other regions, thereby resolving the contradiction between resource utilization and device complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of applying DCI indication to all frequency domain resources, the patent applies it only to a first part of the frequency domain resources. For the second part, preset rules are used. This partial action approach reduces control signaling overhead and device complexity while maintaining improved resource utilization in the critical first part.

Inventive Principle:

Principle #16Partial or excessive action

2Adaptability or versatility

If DCI indicates time domain resources for each frequency domain resource unit, then resource allocation flexibility is improved, but control signaling overhead increases significantly

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidcontrol signaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent divides frequency domain resources into a first part and a second part. For the first part, DCI indication provides flexible resource allocation. For the second part, preset rules are used which require no additional signaling. This segmentation maintains adaptability where needed while eliminating unnecessary control signaling overhead.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts the DCI indication requirement from the entire frequency domain resource space and applies it only to the first part. The second part uses preset rules that are extracted from the signaling process, thereby removing the source of excessive control signaling overhead while preserving allocation flexibility in the first part.

Inventive Principle:

Principle #2Taking out (Extraction)

3Manufacturing precision

If individual resource indication is provided for each frequency domain resource unit, then resource allocation precision is improved, but terminal device processing complexity increases

Engineering Contradiction:

Improveresource allocation precisionVSAvoidterminal device processing complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments frequency domain resources into a first part requiring precise DCI indication and a second part using preset rules. This segmentation provides precise resource allocation for the first part while reducing terminal device processing complexity for the second part, as no individual resource indication needs to be processed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of providing individual resource indication for all frequency domain resource units, the patent provides it only for the first part. For the second part, terminal devices use preset rules requiring minimal processing. This partial action approach maintains allocation precision where needed while significantly reducing terminal device processing complexity.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS10952207B2Method for transmitting data, terminal device and network device

Publication Date: 2021.03.16 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A method for transmitting data including: receiving, by a terminal device, first resource indication information transmitted by a network device, the first resource indication information indicates a first frequency domain resource for transmitting a target channel in at least one time domain resource unit, a time domain resource for transmitting the target channel on a plurality of frequency domain resource units of the first frequency domain resource is same; receiving, by the terminal device, second resource indication information transmitted by the network device, the second resource indication information indicates a time domain resource for transmitting the target channel on each of a plurality of frequency domain resource units of a second frequency domain resource in the at least one time domain resource unit, time domain resources for transmitting the target channel on the plurality of frequency domain resource units of the second frequency domain resource are at least partially different.