Configured Grant Uplink Feedback for Unused Resource Indication
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing and utilizing uplink resources, leading to suboptimal performance and resource wastage, particularly in heterogeneous networks with varying traffic loads and device capabilities.
Innovation Solution
A mechanism for wireless devices to indicate unused configured grant opportunities (CGOs) to the base station using a two-step signaling approach, allowing dynamic adjustment of uplink resource allocation based on traffic conditions and device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If configured grant opportunities are allocated to wireless devices, then uplink transmission capability is improved, but resource wastage occurs when grants are not fully utilized
Solution Approach 1:
The patent implements a feedback mechanism where wireless devices report unused configured grant opportunities back to the base station. This allows the network to identify and reallocate wasted uplink resources, transforming the problem of resource wastage into an opportunity for optimization through information feedback about actual resource utilization patterns.
Solution Approach 2:
The patent enables dynamic adjustment of configured grant allocations based on reported usage patterns. The base station can modify grant configurations in response to changing traffic conditions and device needs, transitioning from static resource allocation to dynamic adaptation that matches actual uplink demand.
2Quantity of substance
If more configured grant opportunities are provided, then uplink resource availability is improved, but network resource utilization efficiency deteriorates
Solution Approach 1:
The feedback mechanism reports not only which grants are unused but also provides information about device traffic patterns and channel conditions. This enables the base station to make informed decisions about optimal grant allocation, balancing resource availability with utilization efficiency through data-driven resource management.
Solution Approach 2:
The patent changes the parameters of configured grants dynamically based on reported usage. The base station can adjust grant timing, frequency resources, and other parameters to better match actual uplink traffic patterns, improving overall network resource utilization efficiency while maintaining adequate resource availability.
3Device complexity
If configured grants are allocated without usage reporting, then device complexity is reduced, but resource optimization capability is lost
Solution Approach 1:
The wireless device autonomously monitors its own configured grant usage and generates reports about unused resources. This self-service approach allows the device to contribute to network-wide resource optimization without requiring complex centralized control, maintaining simplicity while enabling optimization capability.
Data Source
AI summary
A wireless device receives a first parameter for determining a first bitmap indicating first unused CG occasions of first available CG occasions of a first CG configuration and a second parameter for determining a second bitmap indicating second unused CG occasions of second available CG occasions of a second CG configuration. Based on the first CG configuration, the second CG configuration, and an amount of buffered data the wireless device transmits the first bitmap multiplexed with a HARQ-ACK information bit corresponding to a TB via a first available CG occasion of the first CG configuration and transmits the second bitmap via a second available CG occasion of the second CG configuration. The first bitmap indicates the first available CG occasions are unused. The second bitmap indicates one or more CG occasions of the second available CG occasions are unused.