DSS Uplink Control Multiplexing Across Component Carriers

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Solution Overview

Problem

Current wireless communication technologies face challenges in efficiently multiplexing uplink control information (UCI) across multiple component carriers (CCs) in dynamic spectrum sharing (DSS) scenarios, leading to increased complexity and resource consumption in downlink control channel (DCI) transmissions.

Innovation Solution

The method involves receiving an indication for multiplexing UCI on a physical uplink shared channel (PUSCH) associated with multiple CCs, identifying the applicable CCs, and selectively transmitting UCI on a specific CC based on the indication, thereby reducing the size and complexity of DCI.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If UCI multiplexing is implemented across multiple CCs in DSS scenarios, then resource utilization efficiency is improved, but DCI transmission complexity increases

Engineering Contradiction:

Improveresource utilization efficiencyVSAvoidDCI transmission complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent combines UCI from multiple component carriers into a single multiplexed transmission on the PUSCH. The base station receives UCI from multiple CCs and merges them into one consolidated transmission, improving resource utilization by using the shared channel instead of separate control channels for each CC.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The PUSCH is made multi-functional by enabling it to carry both uplink data and uplink control information simultaneously. This universal channel approach allows the same physical resource to serve multiple purposes, reducing the need for separate dedicated control channels and improving overall resource efficiency.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Manufacturing precision

If indication size for multiple CCs is increased to specify UCI multiplexing details, then multiplexing precision is improved, but computing resource consumption increases

Engineering Contradiction:

Improvemultiplexing precisionVSAvoidcomputing resource consumption

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies different indication mechanisms to different CCs based on their specific characteristics and requirements. Rather than using a uniform complex indication for all CCs, the system tailors the indication approach to each CC's local needs, achieving precise multiplexing control while minimizing overall computing resource consumption.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts indication parameters based on the number of CCs, channel conditions, and traffic requirements. By changing parameters such as indication granularity and multiplexing mode according to actual conditions, the system achieves precise control without consistently requiring maximum computing resources.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12349129B2Uplink control information multiplexing for dynamic spectrum sharing

Publication Date: 2025.07.01 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication associated with multiplexing uplink control information (UCI) on a physical uplink shared channel (PUSCH), wherein the indication is associated with multiple component carriers (CCs) on which respective PUSCH transmissions are to be performed; identify one or more CCs, of the multiple CCs, to which the indication applies; and selectively transmit the UCI via the PUSCH on a CC, of the one or more CCs, in accordance with the indication. Numerous other aspects are provided.