Access Network Control Device Location Area Identity List Management
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Solution Overview
Problem
The next generation wireless communications system faces excessive signaling overload due to a large quantity of user equipment (UE) in idle or moving states, leading to slow signaling response speeds and performance degradation in existing network architectures.
Innovation Solution
A mobility management method that involves configuring and managing location area identity lists for UE across different radio access technologies (RATs) by the access network control device, reducing signaling interactions between the access network and core network, and updating these lists based on UE location updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large quantity of UEs in idle state reselect cell or move in the access network control device, then the network can support high mobility and large user capacity, but excessive signaling results in overload of the interface between access network control device and core network
Solution Approach 1:
The access network control device acts as an intermediary between UEs and the core network, managing location area identity lists locally. This mediator approach allows the access network to handle mobility management functions without requiring every location update to reach the core network, thereby reducing interface signaling load while maintaining user capacity support
Solution Approach 2:
The network is segmented into access network control device and core network with distinct functional responsibilities. The access network control device independently manages location area identity lists and handles mobility management for UEs within its jurisdiction, segmenting the signaling flow and preventing core network interface overload
2Measurement precision
If traditional mobility management signaling is used for each UE movement, then location tracking accuracy is maintained, but signaling response speed becomes slow due to interface overload
Solution Approach 1:
The access network control device pre-configures location area identity lists for UEs before movement occurs. When a UE moves within its assigned location area, no immediate signaling to the core network is required. The preliminary configuration enables the UE to autonomously manage its location updates, maintaining tracking accuracy while eliminating the signaling delay that would otherwise occur with each movement
Solution Approach 2:
The UE is empowered to self-manage its location updates by autonomously selecting cells from its pre-configured location area identity list without requiring core network intervention. This self-service mechanism maintains location tracking accuracy while dramatically improving signaling response speed by eliminating redundant core network communications
Data Source
AI summary
This application provide example mobility management methods, access network control devices, and communications systems. One example method includes receiving, by an access network control device, a location area request message of user equipment (UE) through a first station, where the UE is located in a cell managed by the first station. The access network control device can configure at least one location area identity list for the UE based on the location area request message, where the location area identity list includes at least one location area identity, and the location area identity is used to identify a location area. The access network control device can then send the at least one location area identity list to the UE through the first station.