Extending M2M Update Timers to Reduce Signaling Congestion
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Solution Overview
Problem
Existing wireless networks face congestion and overload due to the frequent periodic updates from Machine-to-Machine (M2M) devices, which can lead to inefficient use of network resources, especially for low-mobility and low-power devices.
Innovation Solution
Implementing a mechanism to extend the timers for periodic Location Area Updates, Routing Area Updates, and Tracking Area Updates by using multipliers and extended timer values, allowing these devices to communicate less frequently and reducing the network load, while maintaining compliance with 3GPP standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If M2M devices perform frequent periodic updates to maintain network connectivity, then network coverage and device reachability are improved, but network signaling congestion and overload increase
Solution Approach 1:
The patent implements extended periodic update intervals for M2M devices in idle mode, allowing devices to perform location area updates, routing area updates, and tracking area updates at longer intervals (e.g., 24 hours or more) rather than frequent short intervals. This reduces the frequency of signaling events while maintaining acceptable network connectivity for low-mobility devices.
Solution Approach 2:
The patent modifies timer parameters (T3212, T3312, T3412) that control periodic update intervals by applying extension multipliers. These parameter changes allow the network to dynamically adjust update frequencies based on device type and mobility characteristics, reducing signaling load while preserving connectivity for devices that require it.
2Adaptability or versatility
If M2M devices attach to existing wireless networks for communication, then network functionality and device connectivity are improved, but network resource exhaustion and overload occur
Solution Approach 1:
The patent applies different periodic update timer configurations to different device categories and mobility scenarios. Low-mobility M2M devices receive extended timer values while mobile devices maintain standard update frequencies. This localized differentiation allows the network to support diverse device requirements without uniformly increasing resource consumption across all devices.
Solution Approach 2:
The patent enables dynamic adjustment of periodic update intervals based on device mobility patterns and network conditions. The network can modify timer values (T3212, T3312, T3412) remotely via system information blocks or dedicated signaling, allowing flexible resource management that adapts to changing network load and device behavior.
Data Source
AI summary
Techniques are described that can be used for efficient mobility management signaling. In some cases, a network can specify an extended timer used for a machine to machine (M2M) type device to communicate with a network. The extended timer can be transmitted in connection with an attachment acceptance message, Location Updating Accept message, Tracking Area Update Accept, or Routing Area Update Accept message. In some cases, a timer can be adjusted using a multiplier in order to increase a period at which communications with the network occur. The network can transmit an indication to change a timer by multiplying the timer with the multiplier.