PUCCH Multiplexing of HARQ-ACK and SR Across Priority Formats
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently multiplexing hybrid automatic repeat request acknowledgement (HARQ-ACK) and scheduling request (SR) with different priorities and physical uplink control channel formats, leading to potential collisions and inefficiencies in resource allocation.
Innovation Solution
A method and apparatus for appending bits of SR and HARQ-ACK with different priorities to form a multiplexed signal, selecting a PUCCH resource based on payload size, and transmitting this multiplexed signal using high priority PUCCH resources, with network nodes providing rules for resource selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate PUCCH resources are used for HARQ-ACK and SR transmissions, then transmission reliability is maintained, but resource allocation efficiency deteriorates due to potential collisions and wasted resources
Solution Approach 1:
The patent combines HARQ-ACK and SR transmissions into a single multiplexed PUCCH resource, allowing both signals to be transmitted simultaneously without requiring separate resources. This merging approach eliminates resource collisions and improves allocation efficiency while maintaining transmission reliability through proper signal separation and decoding at the receiver.
Solution Approach 2:
The multiplexed PUCCH resource serves multiple functions by simultaneously carrying both HARQ-ACK and SR information. This universal resource can handle different signal types and priorities, making the system more flexible and efficient compared to dedicated resources that could only handle one type of signal at a time.
2Adaptability or versatility
If multiple PUCCH formats are used for different priorities, then transmission adaptability is improved, but device complexity increases due to multiple resource configurations
Solution Approach 1:
The patent creates a universal PUCCH resource that can handle multiple signal types (HARQ-ACK, SR) and priority levels through multiplexing. Instead of maintaining separate configurations for different formats and priorities, the system uses a single resource that adapts to different transmission requirements through signal multiplexing and priority-based multiplexing indices.
Solution Approach 2:
The system manages different priorities and formats by changing parameters within the multiplexed signal structure, such as using different multiplexing indices or signal separation methods, rather than creating entirely separate PUCCH resources. This allows the same physical resource to adapt to different transmission scenarios through parameter variation.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may append one or more bits of a scheduling request (SR), having a first priority and in a first physical uplink control channel (PUCCH) resource associated with a first format, to one of more bits of a hybrid automatic repeat request acknowledgement (HARQ-ACK), having a second priority and in a second PUCCH resource associated with a second format, to form a multiplexed SR and HARQ-ACK. The UE may select a PUCCH resource, from a plurality of high priority PUCCH resources, based at least in part on a payload size of the multiplexed SR and HARQ-ACK. The UE may transmit, to a network node, the multiplexed SR and HARQ-ACK using the selected PUCCH resource. Numerous other aspects are described.