Implicit PUCCH Resource Indication for 5G Uplink Interference
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Solution Overview
Problem
Wireless communication networks face interference and congestion due to increasing demand for mobile broadband access, which degrades performance on both downlink and uplink communications, especially in shared spectrum environments.
Innovation Solution
The implementation of enhanced implicit PUCCH resource indication and identification techniques, where a UE or base station receives a PUCCH resource set with multiple resources and identifies or indicates the appropriate resource for uplink communication using a PUCCH resource indicator and additional parameters, such as resource allocation indices and time-domain indices, to mitigate interference and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If more UEs access the wireless network to meet growing demand for mobile broadband, then network capacity and coverage are improved, but interference and congestion increase degrading performance
Solution Approach 1:
The PUCCH resources are segmented into multiple resource sets, where each set contains multiple PUCCH resources. The UE is configured with multiple PUCCH resource sets and selectively uses different sets based on the uplink communication conditions. This segmentation allows the system to distribute UEs across different resource sets, reducing interference and congestion while maintaining network capacity.
2Ease of operation
If PUCCH resources are allocated for uplink communication, then uplink control channel functionality is enabled, but resource congestion and interference increase in shared spectrum environments
Solution Approach 1:
The system dynamically selects PUCCH resources from different resource sets based on current communication conditions. The UE determines which PUCCH resource set to use by evaluating parameters such as the number of HARQ-ACK bits, downlink assignment index (DAI), and other indicators. This dynamic selection allows the system to adapt to changing traffic conditions and avoid resource congestion by distributing control channel transmissions across multiple resource sets.
3Object-affected harmful factors
If multiple PUCCH resource sets are configured to reduce interference, then resource management complexity increases
Solution Approach 1:
The UE autonomously determines which PUCCH resource set to use based on pre-configured parameters and current communication conditions. The network provides configuration information including multiple PUCCH resource sets and selection criteria, but the actual resource selection is performed self-service by the UE without requiring additional network signaling or complex centralized coordination. This reduces resource management complexity while still achieving interference reduction through distributed resource selection.
Data Source
AI summary
Wireless communication techniques that include enhanced implicit PUCCH resource indication and identification techniques are discussed. A base station may transmit a PUCCH resource set that includes a plurality of PUCCH resources. A UE may receive a PUCCH resource set that includes a plurality of PUCCH resources. The base station may indicate a PUCCH resource of the plurality of PUCCH resources to use for uplink communication based on a PUCCH resource indicator and one or more additional parameters. A UE may identify a PUCCH resource of the plurality of PUCCH resources to use for uplink communication based, at least in part, on a PUCCH resource indicator and one or more additional parameters. Other aspects and features are also claimed and described.