Mobility-Based Paging Area Segmentation in Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current location tracking in 3G/4G wireless networks is inefficient due to TAL-wide paging, which generates unnecessary wireless traffic by contacting devices in areas where they are not present, leading to resource wastage.
Innovation Solution
Implementing a system that decouples location updates from tracking area updates, allowing for fine-grained location tracking using mobility models to define smaller paging areas based on user equipment mobility patterns, thereby reducing paging overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TAL-wide paging is used to track user equipment location, then the network can contact the UE anywhere in the tracking area, but unnecessary wireless traffic is generated in locations where the UE is not present, leading to resource wastage
Solution Approach 1:
The patent segments the tracking area into multiple paging areas based on mobility patterns. Instead of paging the entire tracking area list (TAL), the system divides it into smaller paging areas (PA1, PA2, PA3, etc.) and selectively pages only the relevant paging area where the UE is most likely to be located, reducing unnecessary wireless traffic while maintaining location tracking accuracy
Solution Approach 2:
The patent applies local quality by tailoring the paging approach to the specific mobility characteristics of each UE. Different UEs with different mobility patterns are assigned different paging areas within the same tracking area, allowing the network to optimize paging resources locally for each user rather than using a uniform TAL-wide approach
2Loss of information
If tracking area updates are coupled with location updates, then the network can maintain location information, but paging efficiency is reduced due to the large size of tracking areas
Solution Approach 1:
The patent segments the tracking area into multiple paging areas, allowing the network to maintain accurate location information at a finer granularity. This segmentation enables efficient paging by targeting smaller areas rather than broadcasting to the entire tracking area, thus improving paging efficiency while preserving location information accuracy
Solution Approach 2:
The patent introduces dynamic paging area assignment based on UE mobility patterns. The paging area is not fixed but adapts to the user's movement behavior, allowing the system to optimize the balance between location tracking accuracy and paging efficiency dynamically for each user
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A method for tracking a location of a User Equipment (UE) connected to a network is provided. When the UE is in an IDLE state, and a mobility management entity of the network receives a notification message that downlink data is available for the UE, the mobility management entity may transmit paging instructions to access points in a paging area. The paging area may be defined as one or more access points within one or more tracking areas. The tracking areas may be defined as a one or more access points from which the UE can access the network. The paging areas may further be defined by a mobility pattern of the UE that tracks location and mobility behaviour of the UE.