UE Cell Selection via Priority Access Broadcast
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Solution Overview
Problem
Wireless telecommunication networks face challenges in providing reliable connectivity to high-priority User Equipment (UE) during emergency situations due to limited radio frequency (RF) resources and congestion, which can lead to disruptions in critical communications.
Innovation Solution
Implementing a system where base stations dynamically update system broadcast messages to direct High Priority Access (HPA) UEs to specific 'priority' cells with greater throughput and reliability, while non-HPA UEs are redirected to non-priority cells, optimizing RF resource allocation based on detected emergency events and congestion levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RF resources are shared among all UEs during normal operation, then network resource utilization is maximized, but reliability of connectivity for high-priority UEs deteriorates during emergency situations
Solution Approach 1:
The patent segments the wireless network resources by creating separate priority and non-priority cell groups. High-priority UEs are directed to priority cells while non-priority UEs use non-priority cells, effectively dividing the network into distinct service tiers. This segmentation ensures dedicated resources for critical communications while maintaining overall network efficiency.
Solution Approach 2:
The system dynamically adjusts cell priority designations and UE routing based on real-time network conditions, emergency event detection, and UE access level classifications. Base stations can update system broadcast messages to reconfigure priority cell assignments, allowing the network to adapt resource allocation between normal and emergency operations.
2Reliability
If all UEs are allowed to access any cell, then network access flexibility is maximized, but congestion increases during emergency situations
Solution Approach 1:
The patent applies local quality by assigning different access characteristics to different cells based on their priority designation. Priority cells have restricted access optimized for high-priority UEs during emergencies, while non-priority cells maintain open access for regular UEs. This localized differentiation resolves congestion by tailoring access policies to specific cell functions.
Solution Approach 2:
The system uses base station broadcast messages as an intermediary mechanism to communicate cell priority information and access restrictions to UEs. These messages act as mediators that guide UE cell selection without requiring direct UE-network negotiation, efficiently implementing access control during emergencies.
3Reliability
If priority cells are designated for HPA UEs during emergencies, then connectivity reliability for HPA UEs is improved, but system complexity increases due to dynamic updates
Solution Approach 1:
The system implements self-service by enabling UEs to autonomously determine their access level and select appropriate priority cells based on broadcast information, without requiring complex centralized control for each connection decision. The base station simply broadcasts priority designations, and UEs independently make routing decisions, reducing control complexity.
Solution Approach 2:
The base station performs preliminary action by pre-configuring and broadcasting cell priority designations before emergency situations arise or upon detecting triggering events. This advance preparation allows UEs to immediately access appropriate priority cells without real-time negotiation, simplifying the response mechanism during emergencies.
Data Source
AI summary
A system described herein may provide a technique for providing high priority access to one or more particular priority cells implemented by a base station of a radio access network (“RAN”) associated with a wireless telecommunications network. A first group of User Equipment (“UEs”) may be High Priority Access (“HPA”) UEs, and a second group of UEs may be non-HPA UEs. In response to triggering events, system broadcast messages and/or Radio Resource Control (“RRC”) release messages may be used to cause HPA UEs to connect to the priority cells, and may cause non-HPA UEs to connect to other (e.g., non-priority) cells implemented by the base station.