Wireless Communication Parameter Group Switching for Reliability

Solution Overview

Problem

Dynamic changes in channels and interferences affect the reliability of transmissions based on semi-persistent scheduling in wireless communication systems, particularly in 5G systems supporting URLLC traffic, requiring a method to improve reliability by dynamically adjusting transmission parameters.

Innovation Solution

A method where a UE and base station receive information and signaling to determine time-frequency resources and parameter groups, with a condition set used to dynamically switch between parameter groups for semi-persistent and dynamic scheduling, allowing for adaptive parameter adjustment without additional signaling overhead.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If semi-persistent scheduling is used for uplink transmission, then transmission delay is reduced and reliability is improved, but transmission parameters cannot be dynamically adjusted to adapt to channel changes

Engineering Contradiction:

Improvetransmission reliabilityVSAvoiddynamic parameter adjustment capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by enabling conditional parameter group switching between semi-persistent scheduling and dynamic scheduling modes. The UE monitors conditions (channel state, interference levels, QoS requirements) and dynamically switches parameter groups to adapt to changing transmission environments while maintaining the low-latency benefits of semi-persistent scheduling when conditions favor it.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by introducing multiple parameter groups (first parameter group for semi-persistent scheduling, second parameter group for dynamic scheduling) and enabling conditional switching between them. This allows transmission parameters such as modulation scheme, coding rate, and resource allocation to be changed based on real-time channel conditions while maintaining the structured approach of semi-persistent scheduling.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If dynamic scheduling is used to adapt to channel changes, then parameter adaptability is improved, but transmission delay increases and reliability decreases

Engineering Contradiction:

Improveparameter adaptabilityVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies dynamics by enabling conditional parameter group switching between semi-persistent scheduling and dynamic scheduling modes. The UE monitors conditions (channel state, interference levels, QoS requirements) and dynamically switches parameter groups to adapt to changing transmission environments while maintaining the low-latency benefits of semi-persistent scheduling when conditions favor it.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by introducing multiple parameter groups (first parameter group for semi-persistent scheduling, second parameter group for dynamic scheduling) and enabling conditional switching between them. This allows transmission parameters such as modulation scheme, coding rate, and resource allocation to be changed based on real-time channel conditions while maintaining the structured approach of semi-persistent scheduling.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If additional signaling is used to dynamically adjust parameters, then adaptability is improved, but signaling overhead increases

Engineering Contradiction:

Improvedynamic adaptabilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies preliminary action by pre-configuring multiple parameter groups and the conditions for switching between them before actual transmission occurs. The network configures the first parameter group and second parameter group along with switching conditions in advance, allowing the UE to autonomously switch between parameter groups based on pre-defined conditions without requiring additional real-time signaling for each parameter adjustment.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements self-service by enabling the UE to autonomously determine which parameter group to use based on pre-configured conditions and current channel state. The UE independently evaluates switching conditions and selects the appropriate parameter group without requiring continuous network signaling, thereby reducing signaling overhead while maintaining adaptability.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12120671B2Method and device for use in user device and base station used for wireless communication

Publication Date: 2024.10.15 APOGEE NETWORKS LLC

AI summary

The present disclosure provides a method and a device in a UE and a base station used for wireless communications. A UE receives first information, the first information is used to determine a first time-frequency resource and a first parameter group; receives a first signaling, the first signaling is used to determine a second time-frequency resource and a second parameter group; operates a first radio signal in the first time-frequency resource; and operates a second radio signal in the second time-frequency resource. A start time for transmitting the first signaling is later than a start time for transmitting the first information; the second parameter group is used to generate the second radio signal, a target parameter group is used to generate the first radio signal, and the target parameter group is the first parameter group or the second parameter group.