Control Plane Node TAI List Segmentation for Paging Overhead
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Solution Overview
Problem
In LTE technology, managing Tracking Area Identity (TAI) lists for user equipment (UE) is challenging due to excessive signaling overheads when the area corresponding to the TAI list is either too large or too small, necessitating an optimal allocation to balance paging overheads and frequency of updates.
Innovation Solution
A method to dynamically allocate different levels of area identity lists to UE based on its current status, using a control plane node to determine and send a lower-level area identity list, which reduces signaling overheads by optimizing the TAI list allocation and paging management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the area corresponding to the TAI list is made large, then the paging coverage is improved, but the signaling overhead of paging increases
Solution Approach 1:
The TAI list is segmented into multiple levels (first-level TAI list and second-level TAI list), where each level corresponds to a different area scope. The network side device can selectively use different levels based on UE movement status, thereby reducing the paging area and signaling overhead when the UE is stationary or moves slowly.
Solution Approach 2:
The patent introduces dynamic adjustment of TAI list levels based on UE movement detection. The network side device determines whether to update the TAI list by comparing current location with historical location, and dynamically selects between first-level and second-level TAI lists according to UE movement status, optimizing the balance between paging coverage and signaling overhead.
2Quantity of substance
If the area corresponding to the TAI list is made small, then the signaling overhead of paging is reduced, but the frequency of TAI list updates increases
Solution Approach 1:
The network side device dynamically determines whether to perform TAI list update by detecting UE movement through location information comparison. When UE movement is detected, the TAI list is updated; when no movement is detected, the existing TAI list is retained. This dynamic approach reduces unnecessary update frequency while maintaining small paging area benefits.
Solution Approach 2:
The system uses location information feedback to determine whether TAI list update is necessary. The network side device receives location information from the UE, compares it with historical location, and based on this feedback, decides whether to update the TAI list or maintain the current one, thereby reducing update frequency while keeping paging area optimized.
3Measurement precision
If the TAI list is updated frequently, then the paging accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The patent implements dynamic TAI list level selection based on UE movement status. When UE movement is detected, the system updates to a more precise (smaller area) TAI list level to improve paging accuracy. When no movement is detected, the system maintains the current TAI list level to avoid unnecessary signaling overhead, thus dynamically balancing accuracy and overhead.
Data Source
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AI summary
Specific embodiments of the present invention provide a location area management method, a control node, and user equipment. The method is applied to a communications system, the communications system includes a control plane node, and the control plane node stores an upper-level area identity list of user equipment UE. The control plane node determines a lower-level area identity list of the UE based on the upper-level area identity list. The control plane node sends the lower-level area identity list to the UE. When the upper-level area identity list is allocated to the user equipment, the lower-level area identity list is allocated to the user equipment. The lower-level area identity list includes fewer areas than the upper-level area identity list, so that when the control plane node pages the UE, paging is performed in an area corresponding to the lower-level area identity list, thereby reducing signaling overheads of a network side device.