Adaptive PUCCH Resource Configuration for Unlicensed Spectrum
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Solution Overview
Problem
Existing wireless communication technologies face inefficiencies in adapting to changing sub-band and bandwidth availability in unlicensed spectrum, leading to resource-intensive fixed scheduling systems that lack flexibility and increase signaling overhead.
Innovation Solution
Implementing adaptive and floating PUCCH resource configurations that allow UEs to dynamically select sub-bands and bandwidths based on listen-before-talk procedures, reducing the need for multiple configurations and conserving resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed scheduling systems are used for PUCCH transmission in unlicensed spectrum, then resource allocation is simplified and easier to manage, but adaptability to changing sub-band and bandwidth availability is reduced and signaling overhead increases
Solution Approach 1:
The patent implements dynamic PUCCH resource configuration where UEs can be allocated to different sub-bands and bandwidths based on real-time channel conditions and LBT outcomes. The network can dynamically adjust PUCCH resource allocations across multiple sub-bands, transforming the static fixed scheduling system into an adaptive dynamic system that responds to changing spectrum availability in unlicensed bands.
2Adaptability or versatility
If multiple PUCCH resource configurations are implemented to handle different sub-bands and bandwidths, then adaptability improves, but signaling overhead increases and resource consumption increases
Solution Approach 1:
The patent creates a universal PUCCH resource configuration framework that can serve multiple sub-bands and bandwidth configurations through a single standardized mechanism. Instead of maintaining separate configurations for each sub-band scenario, the system uses a unified configuration approach where UEs can be dynamically assigned to different resources based on LBT outcomes, reducing the total number of configuration parameters that need to be signaled.
3Productivity
If fixed PUCCH resource allocation is used, then system complexity is reduced and easier to implement, but resource utilization efficiency decreases
Solution Approach 1:
The patent enables dynamic parameter changes in PUCCH resource allocation by allowing the network to adjust sub-band assignments, bandwidth allocations, and resource block configurations based on real-time channel conditions and LBT procedures. This transforms fixed parameter allocation into a flexible system where parameters can be changed dynamically to optimize resource utilization while maintaining manageable complexity through standardized procedures.
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a control channel resource configuration associated with an unlicensed spectrum, wherein the control channel resource configuration is associated with an indication of whether a resource to be used for an uplink control channel in the unlicensed spectrum is a fixed resource, a floating resource, or an adaptive resource. The UE may identify the resource based at least in part on the control channel resource configuration. The UE may transmit uplink control information on the identified resource. Numerous other aspects are provided.