Group Paging for LTE MTC Devices Under Heavy Network Load
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Solution Overview
Problem
In LTE systems, managing and paging a large number of Machine Type Communication (MTC) devices is inefficient due to conventional paging procedures, which can cause network congestion and delays in message delivery.
Innovation Solution
Introducing a group identifier (ID) to concurrently deliver paging messages to multiple user equipment (UEs), allowing for efficient task management and control by assigning UEs into groups and using group-specific paging occasions, thereby reducing channel load and delivery time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional paging procedure is used to manage and page MTC devices, then individual device control is achieved, but network congestion and message delivery delays occur due to the large number of devices
Solution Approach 1:
The patent combines multiple individual paging messages into a single group paging message by introducing a group ID that represents multiple UEs. The base station transmits one paging message containing a group ID instead of sending separate paging messages to each UE, thereby reducing the total number of paging messages and resolving network congestion while maintaining the ability to page multiple devices simultaneously.
Solution Approach 2:
The group ID serves multiple functions: it identifies a group of UEs, enables simultaneous paging of multiple devices, and allows the base station to control and manage groups of MTC devices efficiently. This universal identifier replaces multiple individual UE IDs, making the paging system more versatile and scalable for handling large numbers of MTC devices.
2Loss of time
If individual paging messages are sent to each MTC device, then accurate task control is achieved, but message delivery time increases due to repeated transmissions
Solution Approach 1:
The patent merges multiple individual paging transmissions into a single group paging transmission. By combining the paging operations for multiple UEs into one message with a group ID, the system reduces message delivery time from multiple sequential transmissions to a single simultaneous transmission, directly addressing the time loss issue.
3Quantity of substance
If group ID is introduced for concurrent paging, then network load is reduced, but individual UE identification capability may be compromised
Solution Approach 1:
The patent segments the identification process into two levels: group-level identification using group ID for reducing channel load, and individual-level identification using UE ID when needed. This segmentation allows the system to use the coarser group ID for bulk operations to reduce load, while retaining the ability to identify individual UEs precisely when specific task control is required, thus resolving the contradiction between load reduction and identification accuracy.
Data Source
AI summary
Disclosed is a method for receiving, by a terminal, a paging message in a wireless communication system. A paging message reception method according to the present invention comprises receiving a paging message which includes task information from a base station, and performing at least one task among the initiation of a machine type communication (MTC) function, interruption of a machine type communication (MTC) function and a measurement report according to the task information included in the received paging message.