Uplink Control Information Multiplexing on PUSCH
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently multiplexing uplink control and data communications across devices with varying capabilities and usage expectations, particularly in supporting a broad range of wireless communication characteristics, including scheduling multiple communications in new radio frequencies above 52.6 GHz.
Innovation Solution
The implementation of techniques for multiplexing uplink control information with uplink data transmissions using physical uplink shared channels, where user equipment selects resources to overlap uplink control information with uplink data, considering factors like scheduling, processing delay, and timing, to enhance communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uplink control information and uplink data transmissions are transmitted separately using different channels (PUCCH and PUSCH), then channel reliability is maintained, but resource overhead increases and communication efficiency decreases
Solution Approach 1:
The patent merges uplink control information (UCI) and uplink data transmissions by multiplexing them on the same physical uplink shared channel (PUSCH). This combining approach eliminates the need for separate PUCCH resources, thereby reducing resource overhead while maintaining communication efficiency through unified channel usage.
Solution Approach 2:
The patent enables the PUSCH to serve multiple functions simultaneously by allowing it to carry both uplink data and uplink control information. This multi-functionality approach makes the PUSCH a universal channel that can handle different types of uplink transmissions, optimizing resource utilization and reducing overall system overhead.
2Productivity
If multiple uplink transmissions are scheduled simultaneously, then communication throughput increases, but resource scheduling complexity and device processing burden increase
Solution Approach 1:
The patent segments the resource allocation process by introducing specific signaling mechanisms that divide the scheduling complexity into manageable parts. The base station uses dedicated downlink control information (DCI) fields to indicate which PUSCH resources should carry UCI, breaking down the overall scheduling task into distinct controllable elements that reduce processing burden on both network and device.
Solution Approach 2:
The patent implements dynamic resource allocation where the multiplexing of UCI on PUSCH is flexibly configured based on current channel conditions, traffic requirements, and device capabilities. This dynamic approach allows the system to adaptively adjust scheduling parameters, enabling high throughput when conditions permit while reducing complexity when resources are constrained.
3Quantity of substance
If uplink control information is multiplexed with uplink data on PUSCH, then resource overhead is reduced, but processing delay requirements and timing synchronization challenges increase
Solution Approach 1:
The patent applies preliminary action by having the device prepare and buffer uplink control information in advance before the actual PUSCH transmission occurs. The UCI is generated and formatted ahead of time, and the device pre-configures the multiplexing parameters based on anticipated scheduling decisions, thereby reducing last-minute processing delays and ensuring timely transmission.
Solution Approach 2:
The patent introduces timing indication fields in the downlink control information as an intermediary mechanism that mediates between the data transmission timing and control information timing. This intermediary signaling provides precise timing synchronization cues to the device, allowing it to coordinate the multiplexing of UCI and data on PUSCH without incurring excessive processing delays.
Data Source
AI summary
This disclosure relates to techniques for performing wireless communications including multiplexing of uplink control information communications with other communications between a user equipment device (UE) and a base station. Techniques for generating control information and performing multiplexing are disclosed. The UE may select resources for multiplexing and determine how/if to generate response data for various downlink transmissions are disclosed.