5G Uplink Grant Scheduling With Dynamic RB Reallocation
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Solution Overview
Problem
Current uplink grant mechanisms in cellular wireless communication apply the same resource allocation recipe to all UEs and services, leading to inefficiencies and increased latency, particularly for mission-critical services like V2X, V2V, smart power grid, and industrial automation IoT, without considering individual UE characteristics, traffic patterns, or service-specific requirements.
Innovation Solution
Pre-configure resource blocks (RBs) for user equipment based on device characteristics, historical traffic patterns, and service types, and dynamically monitor and re-allocate RBs based on usage patterns and hysteresis to optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same UL resource allocation recipe is applied to every UE and every type of service, then the base station operation is simplified, but the resource utilization efficiency deteriorates
Solution Approach 1:
The patent segments UEs into different groups based on service types, QoS requirements, and traffic patterns. Each group receives customized UL grant configurations rather than a uniform allocation scheme. This segmentation enables the base station to optimize resource allocation for each group while maintaining manageable operational complexity through automated classification and configuration.
Solution Approach 2:
The patent applies local quality by tailoring UL grant parameters (such as periodicity, resource block allocation, and timing) to specific UE groups and their service requirements. Different QoS classes, traffic patterns, and service types receive locally optimized configurations, improving overall resource utilization efficiency without requiring complete customization for each individual UE.
2Adaptability or versatility
If scheduling request followed by uplink resource allocation is used, then resource allocation flexibility is improved, but the uplink latency increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring UL grants for UEs based on their service types, QoS requirements, and historical traffic patterns. This pre-configuration establishes ready-to-use resource allocations that can be activated immediately when needed, eliminating the scheduling request delay while maintaining flexibility through configurable parameters tailored to each UE group's characteristics.
3Loss of time
If pre-grouping of user equipment and pre-configuration of PRBs is implemented, then uplink latency is reduced, but the system complexity increases
Solution Approach 1:
The patent applies universality by creating reusable UL grant templates and configurations that can be applied to multiple UEs within the same service category or QoS class. These universal configurations reduce system complexity compared to individual customization while still providing tailored resource allocation. The pre-grouping mechanism uses standardized configuration sets that serve multiple functions across different UE groups.
4Reliability
If network slices are pre-configured with reserved PRBs for different service types, then service-specific QoS is improved, but the resource allocation flexibility deteriorates
Solution Approach 1:
The patent implements dynamics by making network slice resource allocations adaptive rather than static. While PRBs are reserved for different service types to ensure QoS, the system dynamically adjusts allocations based on real-time traffic conditions, UE requirements, and network state. This dynamic approach maintains service-specific QoS guarantees while preserving resource allocation flexibility through configurable parameters and adaptive resource management.
Data Source
AI summary
Methods and systems for enhancing uplink grant scheduling in a Fifth Generation (5G) cellular communications are described herein. In some implementations, the method may comprise pre-configuring one or more resource blocks (RBs) in a radio frame for use by a plurality of user equipment (UE) to transmit data in an uplink according to a schedule. After the one or more RBs are granted, the method may further comprise monitoring the usage pattern of the one or more RBs during a time period. When some pre-granted RBs are observed to have low usage or hysteresis, the method may further comprise re-allocating the pre-granted RBs among the plurality of UE based on the usage pattern. In some implementations, one or more RBs may be pre-configured for low latency service or high quality service. The method may further include dynamically adjust the pre-granted one or more RBs based on their usage pattern.