Automatic Transmission of Cancelled UCI in Wireless Systems

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently managing uplink control information (UCI) transmission, particularly when uplink data communications are cancelled, leading to inefficiencies in resource usage and reliability due to the need for explicit downlink control information (DCI) instructions.

Innovation Solution

Implementing a method where user equipment (UE) and network entities can automatically transmit cancelled UCI or respond to DCI instructions, allowing for flexible determination and transmission based on available resources, thereby optimizing UCI transmission and reducing network overhead.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If explicit DCI instructions are used to transmit cancelled UCI, then transmission reliability is improved, but network overhead and resource usage increase

Engineering Contradiction:

ImproveUCI transmission reliabilityVSAvoidnetwork overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The UE automatically transmits cancelled UCI without requiring explicit DCI instructions from the network. The system configures the UE with parameters (such as automatic transmission enabled/disabled, timing offsets, and resource allocation) that allow the UE to autonomously determine when and how to transmit cancelled UCI, thereby reducing network overhead while maintaining reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The network pre-configures the UE with automatic transmission parameters before UCI cancellation occurs. This includes setting up the conditions under which automatic transmission should occur, timing relationships, and resource allocations, so that when cancellation happens, the UE can immediately act without waiting for explicit DCI instructions

Inventive Principle:

Principle #10Preliminary action

2Productivity

If automatic transmission of cancelled UCI is implemented, then resource usage efficiency is improved, but control flexibility is reduced

Engineering Contradiction:

Improveresource usage efficiencyVSAvoidtransmission control flexibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system provides dynamic control flexibility through configurable parameters that can be adjusted based on network conditions. The network can enable or disable automatic transmission, adjust timing offsets, modify resource allocations, and change transmission conditions as needed, allowing the system to adapt between automatic and explicit DCI-based transmission modes

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention uses configurable parameters (automatic transmission enable/disable flags, timing offsets, resource allocation parameters, threshold values) to control the behavior of cancelled UCI transmission. These parameters allow the system to flexibly adjust transmission characteristics based on network conditions, traffic patterns, and reliability requirements without changing the fundamental transmission mechanism

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If DCI instructions are required for every cancelled UCI transmission, then transmission accuracy is improved, but response time increases

Engineering Contradiction:

Improvetransmission accuracyVSAvoidtransmission response time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The network pre-configures all necessary transmission parameters (resource allocations, timing relationships, modulation schemes) before UCI cancellation occurs. When cancellation happens, the UE can immediately transmit using the pre-configured parameters without waiting for DCI instructions, significantly reducing response time while maintaining transmission accuracy through the pre-established configuration

Inventive Principle:

Principle #10Preliminary action

4Ease of operation

If manual DCI-based transmission is used, then transmission control is improved, but network overhead increases

Engineering Contradiction:

Improvetransmission controlVSAvoidnetwork overhead

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The UE performs self-service by automatically transmitting cancelled UCI based on pre-configured parameters without requiring continuous DCI instructions from the network. This reduces network overhead significantly while maintaining control through the initial configuration phase, where all necessary parameters are established

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Pre-configured parameters act as an intermediary between the network and UE for cancelled UCI transmission. Instead of requiring continuous explicit DCI instructions, the pre-configured parameters mediate the transmission process, allowing the UE to autonomously make transmission decisions while still operating under network-defined constraints and guidelines

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20240089971A1Transmission of cancelled uplink control information

Publication Date: 2024.03.14 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may cancel an uplink data communication that is to be multiplexed with uplink control information (UCI). The UE may determine whether to transmit the UCI using automatic transmission of cancelled UCI or in response to downlink control information (DCI) that instructs the UE to transmit cancelled UCI. The UE may transmit the UCI based at least in part on the determination. Numerous other aspects are described.