Height-Based Access Barring for Aerial UE Load Balancing
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Solution Overview
Problem
Existing wireless communication systems lack an efficient mechanism to manage access attempts based on the height of user equipment (UE), leading to inefficient load balancing and wastage of uplink resources, particularly for aerial UEs.
Innovation Solution
Implementing access barring checks based on location ranges that consider the height of wireless devices, allowing networks to manage access attempts more effectively by configuring specific access barring configurations for different height-based location ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access control is performed without height condition, then the access control mechanism is simple, but load balancing efficiency is poor and uplink resources are wasted
Solution Approach 1:
The patent introduces height as an additional parameter for access control decision-making. The network device obtains height information of the UE and uses this parameter to determine whether to allow access attempts, enabling load balancing based on vertical spatial distribution of aerial UEs without fundamentally changing the access control mechanism structure
Solution Approach 2:
The patent extends the access control dimension from traditional two-dimensional (PLMN and access category) to three-dimensional by incorporating height information. This allows the network to perform load balancing by distributing aerial UEs across different vertical layers, reducing UL interference and improving resource utilization
2Reliability
If access barring configuration is increased for different location ranges, then resource utilization improves, but signaling overhead increases
Solution Approach 1:
The patent applies different access barring configurations to different height-based location ranges rather than uniformly across all UEs. The network device determines the UE's height range and applies location-specific barring parameters, allowing optimized resource utilization for each spatial zone while avoiding unnecessary signaling for UEs in favorable ranges
Solution Approach 2:
The patent segments the three-dimensional space into multiple height-based location ranges and creates separate access barring configurations for each segment. This segmentation allows the network to manage aerial UEs and terrestrial UEs differently, improving overall resource utilization while keeping signaling overhead manageable through targeted configuration
Data Source
AI summary
A method and apparatus for access barring check based on height in a wireless communication system is provided. The wireless device receives, from a network, at least one access barring configuration. Each of the at least one access barring configuration is associated with one or more location ranges. The wireless device determines a certain access barring configuration associated with a certain location range to which a current location of the wireless device belongs. The wireless device performs an access barring check based on the certain access barring configuration.