Admission Control Entity Priority Blocking Level Differentiation
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Solution Overview
Problem
Current admission control methods in wireless communication systems face challenges in differentiating accessibility based on Allocation and Retention Priority (ARP) levels without pre-emption, leading to abrupt connection losses and complex configuration requirements.
Innovation Solution
A general priority blocking level is derived from local blocking levels related to Monitored System Resources (MSRs), allowing for ARP-differentiated accessibility without pre-emption, by determining a general priority blocking level based on reports indicating priority blocking levels per MSR, and deciding on bearer setup requests accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-emption is used to prioritize high-priority bearers when resources are exhausted, then high-priority service continuity is improved, but user experience deteriorates due to abrupt connection losses for low-priority users
Solution Approach 1:
The patent segments the admission control mechanism by introducing separate blocking levels for different ARP priority levels. Instead of a single uniform resource exhaustion threshold, the system divides resource monitoring into priority-specific thresholds (first blocking level for high-priority bearers, second blocking level for low-priority bearers), allowing differentiated treatment without abrupt pre-emption
Solution Approach 2:
The patent implements dynamic admission control where the blocking level is not fixed but adapts based on current resource availability and bearer priority. The admission control entity dynamically adjusts which bearers to block based on comparing ARP priority levels against current blocking levels, enabling flexible resource allocation that responds to changing system conditions without causing abrupt connection losses
2Adaptability or versatility
If ARP-differentiated thresholds are introduced per MSR to enable priority-based admission control, then accessibility differentiation is improved, but system complexity increases due to configuration requirements
Solution Approach 1:
The patent merges the admission control logic into a single admission control entity that centrally manages multiple bearers and monitors multiple MSRs. Instead of distributing complex threshold configuration across multiple entities, the merging approach allows one centralized entity to handle priority-level comparisons and blocking decisions, simplifying configuration while maintaining accessibility differentiation
Solution Approach 2:
The patent creates a universal admission control mechanism that handles multiple ARP priority levels and multiple MSR types (dynamic and static) through a single unified blocking level configuration approach. The admission control entity universally applies the same priority-comparison logic across different resource types and priority levels, reducing the need for separate configurations for each scenario
Data Source
AI summary
The invention relates to a network node and a method therein for admission control in a wireless communication system. The method comprises receiving a request for a bearer setup from a requesting entity, where the request and/or bearer is associated with a priority level P. The method further comprises obtaining, e.g. receiving or retrieving, reports indicating a priority blocking level, BLi, per monitored system resource, i, needed for setting up a bearer. The method further comprises determining a general priority blocking level BLG, based on the reports. Further, the method comprises deciding whether to accept or reject the request for a bearer setup based on the priority level P and the general priority blocking level BLG.