Unused Configured Grant Indication for Uplink Resource Efficiency
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing and utilizing uplink resources, leading to suboptimal data transmission and potential resource wastage, particularly in heterogeneous networks with varying traffic loads and device capabilities.
Innovation Solution
Implementing a mechanism for wireless devices to indicate unused configured grant opportunities (CGOs) to the base station, allowing dynamic adjustment and optimization 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 for uplink transmission, then data transmission can proceed without scheduling requests, but unused resources are wasted when devices have no data to send
Solution Approach 1:
The patent implements a feedback mechanism where wireless devices report unused configured grant opportunities back to the base station. This feedback enables the base station to adjust future resource allocations, reducing waste while maintaining transmission efficiency. The feedback loop allows continuous optimization of resource distribution based on actual device needs.
Solution Approach 2:
The patent makes the configured grant opportunity allocation dynamic by allowing the base station to adjust the number and timing of grants based on received feedback about usage patterns. This dynamic adjustment enables the system to adapt to varying traffic conditions, allocating more resources when needed and fewer when not needed, thereby resolving the contradiction between maintaining efficiency and reducing waste.
2Reliability
If more configured grant opportunities are provided, then uplink transmission reliability improves, but resource consumption increases
Solution Approach 1:
The patent applies partial action by allocating configured grant opportunities selectively rather than providing maximum resources to all devices. The base station determines the appropriate number of grants based on actual transmission needs and feedback, providing just enough resources to maintain reliability without excessive allocation. This resolves the contradiction by matching resource quantity to actual requirements.
3Ease of operation
If configured grant opportunities are used without indication of unused resources, then device operation is simple, but network resource utilization is suboptimal
Solution Approach 1:
The patent implements self-service by having devices automatically monitor their own configured grant usage and generate feedback reports about unused resources. This automated self-reporting mechanism maintains device operation simplicity while enabling the network to optimize resource utilization based on actual usage patterns. The device serves itself by providing the necessary information without complex manual configuration.
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.