MTC Terminal Paging Management Using Local ID and Counter
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Solution Overview
Problem
Conventional methods for managing Machine-Type Communication (MTC) terminals in LTE systems are limited in the number of terminals they can handle and require system modifications, as they primarily focus on paging processes for idle terminals, not MTC terminals.
Innovation Solution
A method that involves synchronizing a local counter value and local ID between MTC terminals and base stations, allowing for efficient paging management by allocating a local ID to multiple terminals and using a synchronized local counter to determine paging trigger intervals without modifying system information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional paging management methods are used for MTC terminals, then system information modification is required, but the number of manageable terminals is limited
Solution Approach 1:
The invention segments the terminal identification into two parts: a global ID (GUTI) for network-wide identification and a local ID for cell-specific paging. This segmentation allows the system to manage multiple terminals without modifying system information, as each terminal can be uniquely identified using the combination of global and local IDs. The local ID enables efficient paging within a cell while the global ID maintains network-wide uniqueness.
Solution Approach 2:
The invention adds a new dimension to terminal identification by introducing the local ID component alongside the global ID. This dimensional expansion allows the system to differentiate between multiple terminals in the same cell without requiring changes to the existing global ID allocation mechanism or system information, thereby increasing the number of manageable terminals without increasing system complexity.
2Loss of energy
If MTC terminals stay in offline state to conserve network resources, then network resource consumption is reduced, but paging trigger detection becomes challenging
Solution Approach 1:
The invention implements periodic action by having MTC terminals wake up at regular intervals to check for paging triggers. The terminal uses the local counter to determine when to wake up and monitor the P-RACH resource. This periodic wake-up mechanism allows terminals to conserve energy by staying in idle state most of the time while still being able to detect paging triggers when needed.
Solution Approach 2:
The invention uses feedback mechanisms where the base station monitors the local counter values of terminals and allocates P-RACH resources accordingly. When a terminal needs to send uplink data, it feeds back its local counter value to the base station, which then provides appropriate P-RACH resources. This feedback loop enables efficient resource allocation while terminals remain in idle state, reducing overall network resource consumption.
3Productivity
If local ID and local counter are allocated for each terminal, then simultaneous management of multiple terminals is enabled, but signaling overhead increases
Solution Approach 1:
The invention merges the allocation of local ID and local counter into a single signaling message (RRC Connection Release) sent to the terminal. Instead of separately signaling these parameters, they are combined in one message, reducing signaling overhead. The base station also merges the monitoring of multiple terminal states into a unified paging mechanism that uses the local ID to identify specific terminals, improving management efficiency without proportionally increasing signaling.
Data Source
AI summary
The present invention relates to a mobile communication system, and to a method for managing terminal paging in the system. According to the present invention, local IDs are each allocated to the respective multiple MTC terminals, and therefore trigger periods can be efficiently managed in a network. Further, the multiple MTC terminals can be grouped using the allocated local IDs, thus achieving advantages of an increased number of MTC terminals which can be managed in the network.