Time-Domain Resource Determination for 5G NR Flexible Slots

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Solution Overview

Problem

In 5G NR systems, there is a challenge in effectively determining whether 'undetermined' or 'flexible' time slots or symbols are used for transmission in multi-slot scheduling, which hinders the achievement of both enhanced coverage and high user capacity due to unclear solutions for resource allocation.

Innovation Solution

A time-domain resource determination method where a terminal receives indication information from a network device to determine whether to use a first or second time-domain resource determination rule for transmitting a channel, allowing flexible scheduling based on configuration information from System Information, Radio Resource Control signaling, or Downlink Control Information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If flexible symbols are used for multi-slot scheduling transmission, then coverage enhancement is improved, but scheduling flexibility is reduced

Engineering Contradiction:
Improvecoverage enhancementVSAvoidscheduling flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by making the resource determination rule configurable and adaptable. The network can dynamically select between the first rule (restrictive, for coverage enhancement) and the second rule (flexible, for scheduling efficiency) based on actual system conditions, user requirements, and traffic patterns. This dynamic selection resolves the contradiction by allowing the system to adapt its behavior rather than being fixed in one approach.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of resource determination by introducing two distinct rules with different characteristics. The first rule changes the parameter to be restrictive (only configured direction matches), while the second rule changes it to be flexible (configured direction or flexible direction matches). This parameter change allows the system to optimize for either coverage or scheduling flexibility depending on the selected rule.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If restrictive resource determination rule is used, then scheduling flexibility is maintained, but coverage enhancement is reduced

Engineering Contradiction:
Improvescheduling flexibilityVSAvoidcoverage enhancement
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The network can dynamically switch between the first restrictive rule and the second flexible rule based on real-time conditions. When coverage enhancement is prioritized, the first rule applies; when scheduling flexibility is needed, the second rule applies. This dynamic adaptation resolves the contradiction by allowing both approaches to be used appropriately in different scenarios.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent enables parameter changes by allowing the network to select between two different determination rules. The first rule uses a restrictive parameter (exact match required), while the second rule uses a flexible parameter (match or flexible direction accepted). This parameter variability allows the system to optimize for coverage or scheduling flexibility as needed.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If clear-cut solution for flexible symbols is implemented, 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 segments the resource determination process into two distinct rules with clear, separate logic. The first rule handles the restrictive case with simple exact-matching logic, while the second rule handles the flexible case with extended logic that also considers flexible symbols. This segmentation improves resource allocation efficiency by providing clear guidance while managing complexity through modular rule design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent manages complexity through parameter changes by introducing a selection mechanism that chooses between two rules based on configuration. Rather than creating a single complex algorithm, the system changes the parameter of which rule is active, allowing simple logic in each individual rule while providing flexible overall behavior through rule selection.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11363594B2Time-domain resource determination method and apparatus, and computer storage medium
Publication Date: 2022.06.14 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
  • US11363594B2 patent drawing
  • US11363594B2 patent drawing
  • US11363594B2 patent drawing

AI summary

Disclosed are a time-domain resource determination method and apparatus, and a computer storage medium. The method includes: receiving, by a terminal, first indication information sent by a network device, wherein the first indication information is used to indicate whether a first time-domain resource determination rule or a second time-domain resource determination rule is used to determine whether a first time slot is used for transmitting a first channel scheduled by first scheduling information; determining, by the terminal, a time-domain resource determination rule to be used according to the first indication information, and determining at least one time slot for transmitting the first channel based on the determined time-domain resource determination rule; and performing, by the terminal, transmission of the first channel with the network device in the determined at least one time slot.