Dynamic Uplink Grant Control for 5G NR Resource Efficiency
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Solution Overview
Problem
Current communication systems face challenges in dynamically managing uplink grants for channels, particularly in 5G New Radio (NR) systems, where restrictions on numerology and transmission time intervals (TTI) are inflexible, leading to inefficiencies in resource allocation and quality of service management, especially under high load conditions or link degradation.
Innovation Solution
The method involves transmitting dynamic control information via MAC control elements or downlink control information to modify restrictions associated with uplink grants for channels, allowing for dynamic configuration of numerology and TTI, which can be timed and service-dependent, enabling flexible resource allocation and prioritization of logical channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If restrictions on numerology and transmission time intervals are made flexible through dynamic control information, then resource allocation efficiency and quality of service are improved, but system complexity and signaling overhead increase
Solution Approach 1:
The patent implements dynamic control information that can modify restrictions on numerology and transmission time intervals in real-time based on channel conditions and service requirements. This allows the system to adapt flexibly to changing conditions, improving resource allocation efficiency while managing complexity through structured signaling mechanisms at different layers (RRC, MAC, PHY).
Solution Approach 2:
The patent changes key parameters (numerology, TTI length) from fixed to dynamically adjustable values through control information. This enables the system to optimize resource allocation by modifying these parameters according to actual network conditions, service types, and channel quality, thereby resolving the contradiction between efficiency and complexity.
2Adaptability or versatility
If dynamic control information is used to modify restrictions, then adaptability to different service requirements is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the control mechanism into multiple layers: RRC layer for semi-static configuration, MAC layer for medium-term adjustments, and PHY layer for immediate modifications. This segmentation allows adaptability to be achieved at appropriate granularities, reducing overall signaling overhead by avoiding unnecessary full-reconfiguration messages for minor adjustments.
Solution Approach 2:
The patent employs preliminary configuration through RRC signaling that pre-sets multiple restriction configurations. When dynamic adjustments are needed, the system can quickly switch between pre-configured options rather than negotiating new parameters, thereby reducing signaling overhead while maintaining high adaptability.
3Loss of time
If RRC reconfiguration is avoided for dynamic adjustments, then response time is improved, but control precision may be reduced
Solution Approach 1:
The patent implements a multi-layer dynamic control structure where RRC provides semi-static configuration, MAC provides intermediate adjustments, and PHY provides rapid modifications. This dynamic hierarchy enables fast response times through lower-layer signaling while maintaining control precision through the structured progression from coarse to fine adjustments across layers.
Solution Approach 2:
The patent introduces MAC Control Elements as intermediary mechanisms between RRC and PHY layer control. These MAC CEs provide a middle-ground signaling mechanism that delivers timely adjustments without requiring full RRC reconfiguration, thereby maintaining both fast response time and adequate control precision for medium-term adaptations.
Data Source
AI summary
The embodiments of the disclosure present a method. The method comprises a step of receiving at a user device dynamic control information, said dynamic control information modifying one or more restrictions associated with uplink grant for one or more channels; and a step of using said modified restriction to control grant for one or more channels. An apparatus and a computer program thereof are also disclosed.