RIC PRB Scheduler for 5G Video Session Optimization
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Solution Overview
Problem
5G wireless networks face challenges in efficiently managing radio resources for video sessions, leading to congestion and suboptimal video quality due to varying user equipment capabilities and channel conditions.
Innovation Solution
A radio access network intelligent controller (RIC) based scheduler dynamically allocates physical resource blocks (PRBs) based on video type, device capability, and channel quality, using a content-aware approach to maximize video quality across user equipment, employing algorithms like greedy heuristic and water-filling to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional radio resource allocation is used, then network coverage is maintained, but video quality is suboptimal due to congestion and inability to differentiate QoS
Solution Approach 1:
The patent changes the parameter of resource allocation from uniform to differentiated based on video type, device capability, and channel conditions. The RIC controller dynamically adjusts PRB allocation parameters according to specific video characteristics (e.g., HD vs SD, live vs on-demand) and device capabilities, transforming the resource allocation system from a static, one-size-fits-all approach to a dynamic, customized approach that optimizes video quality while managing network capacity effectively.
Solution Approach 2:
The patent applies local quality by differentiating QoS treatment for different video sessions based on their specific requirements. Each video session receives customized resource allocation tailored to its type, device capability, and channel conditions. The RIC controller enables localized optimization for each user equipment, allowing high-definition video to receive more resources while standard-definition video receives fewer resources, thereby improving overall video quality without uniformly increasing network load.
2Productivity
If uniform resource allocation is used, then device compatibility is maintained, but resource utilization is inefficient due to varying video types and device capabilities
Solution Approach 1:
The patent introduces a RIC controller as an intermediary between the core network and the radio access network. This intermediary entity collects information about video types, device capabilities, and channel conditions, then makes intelligent scheduling decisions to optimize PRB allocation. The RIC controller simplifies the complexity by centralizing the decision-making process and using algorithms to automatically differentiate resource allocation, reducing the need for complex coordination between multiple network elements while improving resource utilization efficiency.
Solution Approach 2:
The patent implements dynamic resource allocation where the RIC controller continuously adapts PRB allocation based on real-time video type, device capability, and channel conditions. The system transitions from static uniform allocation to dynamic differentiated allocation, where resources are adjusted in real-time according to changing conditions. This dynamic approach improves resource utilization by allocating more resources to high-priority video sessions and fewer resources to low-priority sessions, while the automated algorithms manage the complexity of these dynamic decisions.
3Manufacturing precision
If high data quantities are allocated for HD video streaming, then video quality improves, but network congestion increases
Solution Approach 1:
The patent changes the allocation parameters dynamically based on video type and channel conditions. For HD video streaming, the system allocates higher data quantities when channel conditions are good and network load is low, but reduces allocation when congestion is detected. The RIC controller monitors network conditions and adjusts PRB allocation parameters in real-time, transforming the approach from fixed high allocation to adaptive allocation that maintains video quality while preventing congestion.
Solution Approach 2:
The patent applies partial action by allocating resources selectively rather than uniformly. The RIC controller determines the appropriate level of resource allocation for each video session based on its priority and current network conditions. For high-priority HD video sessions, the system may allocate excessive resources temporarily when network conditions permit, while for lower-priority sessions or during congestion, it allocates only the necessary minimum resources. This selective partial allocation optimizes video quality for critical sessions without causing overall network congestion.
Data Source
AI summary
A radio access network intelligent controller (RIC) can comprise a physical resource block (PRB) scheduler that can facilitate the streaming of videos. When a user equipment (UE) requests a video, the PRB scheduler can take into account channel quality data associated with the connection between the UE and a distributed unit of a base station. The PRB scheduler can also receive video stream rate information from a video server. Based on the video stream rate information and the channel quality data, the PRB scheduler can make a decision regarding what types of videos to facilitate streaming to the UE.