QoS State Transition Fallback Configuration for 5G mMTC
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Solution Overview
Problem
Current 5G New Radio (NR) systems face challenges in efficiently managing resource re-allocation and quality of service (QoS) transitions for massive machine-type communications (mMTC) devices, particularly in scenarios where multiple devices require differentiated QoS services, leading to resource conflicts and increased signaling overhead.
Innovation Solution
A method is disclosed for a wireless transmit/receive unit (WTRU) to receive a clear channel indication and apply fallback configurations based on applicability criteria, allowing it to suspend or discard transmissions/receptions, enter a discontinuous reception state, or switch bandwidth parts, thereby re-purposing resources and optimizing QoS transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple mMTC devices require differentiated QoS services, then QoS service quality is improved, but resource conflicts and signaling overhead increase
Solution Approach 1:
The patent segments devices into different QoS state groups (first QoS state and second QoS state) with different configuration parameters. This segmentation allows differentiated QoS services while managing resource allocation efficiently, reducing signaling overhead by grouping devices rather than individually configuring each device's QoS requirements.
Solution Approach 2:
The patent changes configuration parameters (such as bandwidth part, uplink grant, PDCCH monitoring periodicity) based on QoS state transitions. By dynamically adjusting these parameters according to device QoS requirements, the system provides differentiated services while minimizing signaling overhead through parameter-based management rather than extensive reconfiguration.
2Productivity
If resources are re-allocated for QoS transitions, then QoS state transition efficiency is improved, but resource availability for other devices may be reduced
Solution Approach 1:
The patent implements dynamic resource allocation where configuration parameters are adjusted based on real-time QoS state transitions. Resources are dynamically reassigned to devices transitioning between QoS states, ensuring efficient utilization while maintaining availability for other devices through adaptive rather than static allocation.
Solution Approach 2:
The patent employs periodic QoS state transitions and configuration updates at specific time intervals or trigger events. This periodic approach allows efficient batch processing of QoS transitions, reducing overall signaling overhead while ensuring resources are periodically reallocated to meet changing QoS requirements without permanently depriving other devices.
3Productivity
If fallback configuration is applied based on applicability criteria, then resource re-allocation efficiency is improved, but device operation complexity increases
Solution Approach 1:
The patent applies fallback configurations that are pre-defined and stored in the device before QoS state transitions occur. When a transition is triggered, the device automatically applies the pre-configured fallback parameters without complex real-time calculations, improving re-allocation efficiency while keeping device operation simple through pre-computed configurations.
Solution Approach 2:
The patent enables devices to autonomously determine applicability criteria and self-apply appropriate fallback configurations based on their current state and requirements. This self-service mechanism reduces network signaling overhead and simplifies device operation by allowing devices to independently manage their own QoS transitions using pre-configured parameters.
Data Source
AI summary
A method and WTRU for resource re-allocation is disclosed. A WTRU may be configured to receive a radio network temporary identifier (RNTI) and receive fallback configuration information. The WTRU may be configured to receive an indication. The indication may indicate that a particular resource or set of resources are no longer available. The indication may comprise applicability criteria and applicability resource information. The WTRU may be configured to apply the fallback configuration in resources based on the applicability resource information on a condition that a characteristic of the WTRU matches at least one applicability criteria. The WTRU may be configured to transmit uplink data based on the fallback configuration. The fallback configuration may comprise at least one of: a measurement configuration, a configured grant configuration, a random access channel (RACH) configuration, or a physical downlink control channel (PDCCH) monitoring periodicity configuration.