RAN Wireless Station Slice-Based Admission Control
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Solution Overview
Problem
Current 5G networks lack intelligent admission control mechanisms at the Radio Access Network (RAN) wireless stations, leading to potential blocking or delays in network access for user equipment (UE) devices without considering their type and designated network slice requirements, resulting in suboptimal performance and user experience.
Innovation Solution
Implementing slice-based admission control logic at wireless stations to identify default network slice selection, UE device types, and available resources, allowing for intelligent decisions to admit, block, or redirect UE devices to appropriate network slices based on congestion and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If admission control is not implemented at RAN wireless stations, then network access is simple and fast, but network performance deteriorates due to blocking and delays without intelligent decision-making
Solution Approach 1:
The patent introduces an admission control mechanism at the RAN wireless station that acts as an intermediary between UE devices and the core network. This intermediary evaluates service requests against stored slice admission control data (including slice characteristics, current status, and congestion information) to make intelligent decisions about admitting, blocking, delaying, or redirecting UEs, thereby improving network performance without requiring complex changes to the entire network architecture
Solution Approach 2:
The patent implements preliminary action by pre-configuring the RAN wireless station with slice admission control data before service requests arrive. This data includes slice characteristics, current status, and congestion information that are stored locally, enabling the wireless station to make immediate admission decisions without real-time core network intervention, thus improving response time and network performance
2Ease of operation
If network slice selection is made without considering UE device type and traffic requirements, then network access is quick, but user experience deteriorates due to suboptimal performance
Solution Approach 1:
The patent applies local quality by tailoring the network slice selection to the specific characteristics of each UE device and its traffic requirements. The admission control mechanism evaluates device type, service category, and traffic characteristics to direct different UEs to appropriately optimized network slices (e.g., eMBB for enhanced mobile broadband, uRLLC for ultra-reliable low-latency communications), ensuring each user receives service quality matched to their specific needs while maintaining quick access
3Productivity
If network resources are not managed intelligently, then resource allocation is simple, but resource utilization deteriorates due to congestion and blocking
Solution Approach 1:
The patent implements feedback by continuously monitoring network slice status and congestion information, which are stored in the slice admission control data at the RAN wireless station. This feedback mechanism allows the admission control to dynamically adjust resource allocation decisions based on current network conditions, directing UEs to slices with available capacity and preventing overload, thereby optimizing resource utilization without requiring complex centralized management
Data Source
AI summary
Systems and methods enable a wireless station in a radio access network to apply slice-based admission control. A wireless station receives, from a core network, network slice data for each network slice available via the wireless station, wherein the network slice data includes a slice identifier and corresponding slice status for each network slice; and receives, from a user equipment (UE) device, a service request that indicates a network slice identifier previously assigned to the UE device. The wireless station applies, based on the network slice data from the core network and the network slice identifier from the UE device, admission controls to forward the service request to the core network when the one of the network slices, corresponding to the network slice identifier, is not congested, and delay or redirect the service request when the one of the network slices, corresponding to the network slice identifier, is congested.