Uplink Control Data Multiplexing Rate-Matching

Solution Overview

Problem

Current wireless communication systems face inefficiencies in transmitting uplink control information (UCI) due to the need for puncturing PUSCH data with UCI, leading to data loss and increased complexity in decoding, especially when downlink assignments are missed, and they struggle to manage UCI for multiple services with different quality of service parameters concurrently.

Innovation Solution

The proposed method involves rate-matching UCI within uplink transmissions, using uplink grants to indicate the number of downlink transmissions for feedback, and multiplexing UCI from multiple services with different performance reliability parameters, allowing for efficient transmission and decoding of UCI even when downlink grants are late or missed, by using techniques like frequency or time division multiplexing and explicit indications in uplink grants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If UCI is transmitted by puncturing PUSCH data, then UCI can be transmitted in uplink, but data loss occurs and decoding complexity increases

Engineering Contradiction:

ImproveUCI transmission reliabilityVSAvoiddata loss

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent segments the uplink transmission by dividing it into control information portions and data portions. Rate-matching is applied specifically to the data portions around the UCI resources, allowing UCI to be embedded without completely puncturing the PUSCH data. This segmentation approach maintains data integrity while enabling reliable UCI transmission.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces rate-matching as an intermediary mechanism between UCI transmission and PUSCH data transmission. Instead of direct puncturing, rate-matching adjusts the data rate around UCI resources, serving as a mediator that preserves both UCI transmission reliability and data integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If UCI is transmitted by puncturing PUSCH data, then UCI can be transmitted in uplink, but decoding complexity increases

Engineering Contradiction:

ImproveUCI transmission reliabilityVSAvoiddecoding complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the uplink transmission by dividing it into control information portions and data portions. Rate-matching is applied specifically to the data portions around the UCI resources, allowing UCI to be embedded without completely puncturing the PUSCH data. This segmentation approach maintains data integrity while enabling reliable UCI transmission.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces rate-matching as an intermediary mechanism between UCI transmission and PUSCH data transmission. Instead of direct puncturing, rate-matching adjusts the data rate around UCI resources, serving as a mediator that preserves both UCI transmission reliability and data integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple services with different QoS parameters are transmitted concurrently, then service diversity is supported, but managing UCI for multiple services becomes complex

Engineering Contradiction:

Improvemulti-service supportVSAvoidUCI management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by assigning different rate-matching parameters and UCI resource allocations to different services based on their specific QoS requirements. Each service can have customized UCI multiplexing characteristics, allowing high-reliability services to prioritize UCI transmission while best-effort services use remaining resources, thereby managing complexity through localized optimization.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent creates a universal rate-matching framework that can handle multiple services with different QoS parameters through a unified uplink grant structure. The base station can indicate different UCI resource allocations and rate-matching parameters within the same uplink grant, enabling multi-service support without requiring separate management mechanisms for each service type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11678332B2Control and data multiplexing in uplink wireless transmissions

Publication Date: 2023.06.13 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described that support control and data multiplexing in uplink wireless transmissions. Described techniques provide for efficient communication of uplink control information (UCI) through rate-matching uplink data around uplink control information in uplink transmissions, including information on amounts or types of UCI to be transmitted by a UE, indications in downlink transmissions of allocated UCI resources and whether associated UCI is to be included in allocated UCI resources, formatting and multiplexing of multiple wireless services at the UE, or any combination thereof.