Adaptive Sub-band Usage for Uplink Control Channel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently managing uplink control channel resources in unlicensed spectra due to fixed scheduling systems that lack adaptability to changing sub-band and bandwidth availability, leading to inefficiencies and increased signaling overhead.
Innovation Solution
Implementing adaptive and floating sub-band usage techniques for uplink control channels, where resources can be dynamically identified based on configured lists, mappings, and listen-before-talk procedures, allowing for flexible configuration and reduced signaling burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed scheduling systems are used for uplink control channel resources, then resource allocation is simple and deterministic, but adaptability to changing sub-band and bandwidth availability is poor
Solution Approach 1:
The patent implements dynamic resource allocation where uplink control channel resources are not fixed but adapt based on sub-band availability. The system determines resource allocation dynamically according to current channel conditions and sub-band usage, allowing the resource configuration to change over time rather than remaining static.
Solution Approach 2:
The patent changes the parameters of resource allocation by introducing flexibility in sub-band selection and resource positioning. Instead of fixed parameters, the system adjusts resource allocation parameters based on available sub-bands, enabling adaptation to varying channel conditions while managing complexity through standardized adjustment mechanisms.
2Productivity
If adaptive sub-band usage is implemented, then resource utilization efficiency improves, but signaling overhead increases
Solution Approach 1:
The patent creates a universal resource allocation framework that can handle multiple sub-band configurations through a single standardized mechanism. This multi-functional approach allows the same signaling structure to work across different scenarios, reducing the need for separate signaling for each configuration case.
Solution Approach 2:
The patent optimizes signaling by transmitting only the necessary information for adaptive resource allocation rather than complete resource descriptions. The system discards redundant signaling elements and recovers the essential allocation information through standardized interpretation rules at the receiver side.
3Adaptability or versatility
If dynamic resource identification is used, then flexibility in resource allocation increases, but system complexity increases
Solution Approach 1:
The patent segments the resource allocation process into distinct, manageable components: sub-band identification, resource determination, and allocation signaling. This segmentation allows each component to be handled independently with standardized procedures, reducing overall system complexity while maintaining flexibility.
Solution Approach 2:
The patent performs preliminary configuration of resource allocation rules and sub-band parameters before actual resource allocation occurs. By pre-establishing the framework for dynamic allocation and configuring available sub-bands in advance, the system reduces the complexity of real-time decision-making while maintaining allocation flexibility.
Data Source
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.