Serving Network Node Device Triggering Congestion Control
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Solution Overview
Problem
In communication systems, network congestion can lead to inefficiencies in device triggering procedures, where trigger requests are not effectively managed, resulting in reduced signaling efficiency and difficulties in determining congestion status across different network entities.
Innovation Solution
A method is implemented at the serving network node to determine the device triggering capabilities of terminals and assess congestion levels, deciding whether to transmit trigger requests based on these capabilities and congestion states, thereby optimizing signaling exchange during network congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If trigger requests are transmitted to terminals during network congestion, then device triggering procedure is maintained, but signaling efficiency is reduced and network overload occurs
Solution Approach 1:
The network node determines device triggering capabilities and assesses congestion levels before transmitting trigger requests. By performing this assessment in advance, the system prevents unnecessary signaling during congestion while maintaining the ability to trigger devices when conditions are favorable, thus resolving the contradiction between reliability and signaling efficiency.
Solution Approach 2:
The system continuously monitors congestion levels and device capabilities, using this feedback to dynamically decide whether to transmit trigger requests. This feedback mechanism allows the network to adapt its behavior based on real-time conditions, maintaining signaling efficiency while ensuring reliable device triggering when possible.
2Reliability
If multiple trigger requests are transmitted to handle congestion, then coverage is improved, but network resources are wasted and overload is prevented
Solution Approach 1:
Before transmitting trigger requests, the network node performs preliminary assessment of congestion levels and device capabilities. This preliminary action prevents the transmission of multiple redundant requests during congestion periods, thereby avoiding waste of network resources while still ensuring reliable delivery when conditions permit.
Solution Approach 2:
The system changes its transmission parameters based on congestion assessment - reducing or eliminating trigger request transmissions when congestion is detected, and resuming normal operation when congestion resolves. This dynamic parameter adjustment optimizes network resource consumption while maintaining delivery reliability.
3Reliability
If congestion control is implemented at network level, then network overload is prevented, but complexity of congestion management increases
Solution Approach 1:
The congestion control logic is extracted and centralized at the network node, which performs congestion assessment and makes decisions about trigger request transmission. This extraction simplifies the overall system by concentrating complexity at a single point rather than distributing it across multiple devices and protocols.
Solution Approach 2:
The network node acts as an intermediary between the triggering server and the terminal, absorbing the complexity of congestion management. It assesses congestion levels and device capabilities, then makes informed decisions about whether to forward trigger requests, thereby simplifying the interaction between other system components.
Data Source
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AI summary
The present invention relates to device triggering in case of a congestion control. A triggering server transmits a device trigger request to a terminal over a communication network including a serving network node. The serving network node receives the device trigger request encapsulated in a message and transparent. In order to determine, whether the received message relates to device triggering, the serving network node determines device-triggering capabilities of the terminal and decides, based thereon, whether to forward or not the message to the terminal depending on the applied congestion control. This approach reduces signaling traffic in the congestion case since the terminal is prevented from trying to establish connection and transmit the data in response to the device triggering.