Uplink Resource Allocation for XR Services
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Solution Overview
Problem
Current uplink resource allocation mechanisms in 5G NR networks are not flexible enough to handle the varying throughput and reliability requirements of Extended Reality (XR) and Cloud Gaming services, leading to inefficiencies in resource utilization and capacity issues.
Innovation Solution
A method for uplink resource allocation in user equipment (UE) that dynamically selects and configures uplink grant configurations based on trigger events such as data volume thresholds, timer expirations, channel quality, and service-specific conditions, allowing for adaptive switching between parameter sets to optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional uplink resource allocation mechanisms are used, then resource allocation is simple and stable, but flexibility and responsiveness to varying traffic conditions are insufficient
Solution Approach 1:
The patent implements dynamic uplink resource allocation by enabling User Equipment to switch between different configured uplink grant configurations based on trigger events. The system transitions from static resource allocation to dynamic adaptation, where the UE monitors trigger conditions (such as channel quality changes, data arrival, or network indications) and selects appropriate grant configurations accordingly, thereby achieving flexibility without requiring complete reconfiguration of the resource allocation mechanism
Solution Approach 2:
The patent changes key parameters of the uplink grant configuration dynamically. Multiple configured uplink grant configurations with different parameter sets (such as time domain resources, frequency domain resources, modulation and coding schemes) are pre-configured, and the UE switches between them by changing the active configuration index based on trigger events. This allows the system to adapt to varying traffic conditions by adjusting resource allocation parameters rather than redesigning the entire allocation mechanism
2Adaptability or versatility
If multiple configured uplink grant configurations are maintained, then adaptability to different traffic conditions improves, but device complexity and configuration overhead increase
Solution Approach 1:
The patent segments the uplink resource allocation into multiple discrete configured grant configurations, each optimized for specific traffic conditions or service types. Instead of having a single monolithic configuration, the resource allocation is divided into multiple manageable segments (grant configurations) that can be independently selected based on current network conditions and service requirements, making the complexity manageable through modular organization
Solution Approach 2:
The patent enables the User Equipment to autonomously select and switch between different configured uplink grant configurations based on pre-defined trigger events without requiring continuous network intervention. The UE monitors trigger conditions (such as channel quality thresholds, data buffer status, or timer expirations) and automatically switches configurations, thereby reducing configuration management overhead and allowing the system to serve itself in adapting to traffic conditions
3Productivity
If dynamic switching between configurations is enabled, then resource utilization efficiency improves, but processing time and decision complexity increase
Solution Approach 1:
The patent performs preliminary actions by pre-configuring multiple uplink grant configurations and pre-defining trigger conditions and switching criteria before actual data transmission occurs. The network and UE establish the configuration set and trigger event definitions in advance, so that when trigger events occur during operation, the UE can quickly match the current condition against pre-defined triggers and select the appropriate configuration without performing complex real-time analysis, thereby reducing processing time while maintaining high resource utilization efficiency
Data Source
AI summary
A method of uplink resource allocation and a user equipment are provided. The method includes: receiving a configuration and the configuration contains at least one configured uplink grant configuration; selecting one of the at least one configured uplink grant configuration in response to a trigger event; determining an uplink resource according to the selected configured uplink grant configuration; and transmitting pending uplink data via the uplink resource.