Dynamic Configured Grant Footprint for Wireless Uplink
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Solution Overview
Problem
Current configured grants in wireless communications, particularly in 3GPP NR, are inefficient for certain traffic conditions, leading to waste of periodically allocated resources and suboptimal utilization of radio resources due to inflexible scheduling mechanisms.
Innovation Solution
The uplink transmission footprint of a UE is dynamically adjustable based on current traffic needs, with the UE transmitting actual footprint parameters to the base station, allowing for dynamic selection within predefined limits, and using these parameters to configure uplink data and control information transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If configured grants use fixed periodic allocation, then resource allocation is simple and predictable, but resource utilization efficiency deteriorates when traffic conditions vary
Solution Approach 1:
The patent applies dynamics by transitioning from fixed periodic configured grants to dynamic grant-based scheduling. The base station dynamically adjusts resource allocation based on real-time traffic conditions, UE buffer status, and channel quality. This allows the system to adapt transmission parameters (time, frequency, power) dynamically, improving resource utilization efficiency while maintaining manageable complexity through automated base station control.
Solution Approach 2:
The patent employs parameter changes by allowing dynamic modification of transmission parameters including time domain resources, frequency domain resources, and power allocation. The base station adjusts these parameters based on traffic conditions, enabling the system to optimize resource utilization for different traffic patterns while keeping the scheduling mechanism centralized and controllable.
2Reliability
If configured grants allocate resources periodically, then resource allocation is guaranteed, but resource waste increases when traffic demand is low
Solution Approach 1:
The patent uses dynamics to transition from guaranteed periodic allocation to demand-based dynamic allocation. The base station continuously monitors UE traffic conditions and channel quality, allocating resources only when needed and adjusting allocation levels accordingly. This maintains reliability through centralized control while eliminating waste by matching resource allocation to actual traffic demand in real-time.
Solution Approach 2:
The patent applies self-service through the base station's automated scheduling mechanism. The base station autonomously monitors UE buffer status, determines traffic conditions, and dynamically allocates resources without requiring periodic guaranteed allocations. This eliminates resource waste while maintaining reliability through intelligent, demand-driven resource management.
3Adaptability or versatility
If configured grants use static transmission parameters, then configuration is simple, but adaptability to traffic conditions deteriorates
Solution Approach 1:
The patent applies dynamics by enabling real-time adjustment of transmission parameters based on traffic conditions. The base station dynamically modifies time domain resources, frequency domain resources, and power allocation according to UE buffer status and channel quality. This achieves high adaptability while keeping configuration complexity manageable through centralized automated control.
Solution Approach 2:
The patent employs feedback mechanisms where the base station continuously monitors UE traffic conditions, buffer status, and channel quality, then adjusts transmission parameters accordingly. This feedback loop enables the system to adapt to varying traffic conditions dynamically while maintaining simple configuration through automated base station decision-making.
Data Source
AI summary
Improved configured grants (CGs) may include the designation of a footprint corresponding to uplink transmission of a UE, with the footprint at least partially defined by the occupied transmission time, occupied transmission frequency, and transmission power. The footprint may be adjustable and/or selectable by the UE according to the current traffic needs of the UE and within limits set for the footprint via prior signaling from the base station to the UE. The UE may indicate the actual footprint parameters/values for the UE's uplink data transmissions by transmitting CG uplink control information (CG-UCI) inclusive of the actual footprint values to the base station. The UE may transmit the CG-UCI over resources configured according to additional parameter values received via the prior signaling from the base station. The UE may further transmit uplink data on resources configured according to the actual footprint values.