3GDT Dynamic Mode Switching for GPRS Signalling Load Reduction
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Solution Overview
Problem
The existing GPRS core network systems face high signalling loads due to frequent service requests, particularly from Instant Message applications, which can exhaust node capacity and lead to costly hardware upgrades and increased SGSN-MME requirements.
Innovation Solution
A method to measure the number of service requests from UE to SGSN and dynamically decide between 3GDT and non-3GDT communication based on threshold values, preventing frequent 'Update PDP Request' or 'Modify Bearer Request' from SGSN, thereby reducing signalling load and optimizing network usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If 3GDT is used to bypass SGSN for direct RNC-GGSN/PGW communication, then payload traffic through SGSN is reduced, but signalling load to GGSN/PGW increases due to frequent service requests
Solution Approach 1:
The system dynamically switches between 3GDT and non-3GDT communication modes based on real-time service request frequency measurements. When service request frequency exceeds a threshold, the system transitions from 3GDT to non-3GDT mode, and vice versa, allowing adaptive optimization of both payload traffic efficiency and signalling load management
Solution Approach 2:
The invention changes the communication mode parameter (3GDT vs non-3GDT) based on measured service request frequency. This parameter change allows the system to optimize performance by selecting the appropriate communication mode depending on traffic characteristics, thereby reducing both payload traffic through SGSN and excessive signalling load to GGSN/PGW
2Productivity
If 3GDT is established for all services, then direct tunneling efficiency is maximized, but node capacity is exhausted due to frequent service requests from IM applications
Solution Approach 1:
The system implements dynamic mode selection that adapts to different application types and traffic patterns. For IM applications with frequent short-lived connections, the system switches to non-3GDT mode to protect node capacity, while maintaining 3GDT mode for applications that benefit from direct tunneling, thus balancing efficiency and reliability
Solution Approach 2:
The invention introduces a feedback mechanism where the SGSN measures service request frequency and uses this information to decide whether to establish 3GDT or use non-3GDT communication. This feedback loop prevents node capacity exhaustion by detecting high-frequency service request patterns and switching to a mode that protects node resources
3Speed
If frequent service requests are handled through 3GDT, then service responsiveness is improved, but hardware upgrades become necessary due to increased signalling load
Solution Approach 1:
The system dynamically adjusts communication mode based on service request frequency, maintaining fast 3GDT response for normal traffic while switching to non-3GDT mode when service request frequency indicates potential hardware overload, thereby maintaining responsiveness without requiring hardware upgrades
Solution Approach 2:
By changing the communication mode parameter based on measured service request frequency, the system optimizes service responsiveness while avoiding the hardware complexity increases that would result from continuously handling all traffic through 3GDT
Data Source
AI summary
A method for reducing the signaling load of a GPRS core network system is provided. The GPRS core network system comprises a first UE, a first RNC, a first SGSN, a first core network node, and a first IP network, where the first UE is arranged to be in communication with the first RNC, where the first RNC is arranged to be in communication with the SGSN for non-3GDT communication of the GPRS core network system or the core network node for 3GDT communication of the GPRS core network system, where the first SGSN is arranged to be in communication with the first core network node, where the first core network node is arranged to be in contact with the first IP network, where one or more service requests originates from the first UE to the SGSN, where the number of service requests to the SGSN is measured.