Differential Paging Policy for IoT Networks
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Solution Overview
Problem
The increasing number of IoT devices in cellular mobile networks leads to paging overload, affecting network performance and user experience, as existing paging schemes are inefficient and resource-intensive, particularly due to the need to send paging messages to all cells in a tracking area, which degrades network capacity and power consumption.
Innovation Solution
Implementing a differential paging policy based on the mobility information of terminal devices, where stationary devices are paged only in their serving cell and movable devices are paged in their tracking area, reducing the paging load and improving resource efficiency by minimizing the number of cells targeted for paging messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging messages are sent to all cells in a tracking area, then all terminal devices can be reached, but network load and resource consumption increase significantly
Solution Approach 1:
The patent segments the tracking area into multiple cell groups and assigns different cell group identifiers to stationary and movable terminal devices. This allows the network to selectively page only relevant cell groups rather than broadcasting to all cells in the tracking area, thereby reducing network energy consumption while maintaining reliable paging coverage for both device types.
Solution Approach 2:
The patent applies different paging strategies to different locations based on terminal device mobility characteristics. Stationary devices receive paging in their serving cell only, while movable devices receive paging across multiple cell groups. This localized differentiation reduces overall network load while ensuring each device type receives appropriate paging coverage.
2Reliability
If paging messages are sent to all cells in a tracking area, then all terminal devices can be reached, but network capacity deteriorates
Solution Approach 1:
By segmenting the tracking area into cell groups and using different cell group identifiers for stationary and movable devices, the system enables selective paging that preserves network capacity. Only the necessary cell groups are paged based on device mobility type, preventing network overload while maintaining complete paging coverage.
3Reliability
If paging messages are sent to all cells in a tracking area, then all terminal devices can be reached, but power consumption of terminal devices increases
Solution Approach 1:
The segmentation of tracking areas into cell groups with different identifiers allows terminal devices to monitor only their assigned cell group for paging messages. This reduces the number of cells each device needs to monitor, thereby lowering power consumption while ensuring reliable paging coverage through targeted message delivery.
4Loss of energy
If differential paging policy is implemented, then paging load is reduced, but system complexity increases
Solution Approach 1:
The system performs preliminary classification of terminal devices as stationary or movable during initial attachment or mobility management procedures. This pre-classification enables the network to assign appropriate cell group identifiers and paging areas in advance, simplifying the actual paging process while reducing network energy consumption through targeted message delivery.
Data Source
AI summary
Various embodiments of the present disclosure provide a method for paging in a communication network. The method comprises receiving mobility information of a terminal device by a core network node from an access network node serving the terminal device. The method further comprises determining a paging policy for the terminal device by the core network node according to the mobility information. According to the embodiments of the present disclosure, a terminal device can be paged differentially based at least in part on mobility information of the terminal device, so that system performance and energy efficiency of the communication network can be improved.