Adaptive Group Paging for M2M Network Scalability

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Solution Overview

Problem

Current device activation mechanisms in communication networks are inadequate to handle the expected growth of machine-to-machine (M2M) communication, leading to scalability issues and increased stress on network resources, particularly in terms of device activation signaling.

Innovation Solution

An adaptive device activation architecture that dynamically adjusts group sizes and membership based on network conditions, using adaptive paging mechanisms to optimize group paging and random access channel procedures, thereby reducing resource utilization and minimizing collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If device activation procedures are executed for each individual device, then device activation reliability is improved, but network signaling load increases significantly

Engineering Contradiction:

Improvedevice activation reliabilityVSAvoidnetwork signaling load

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent combines multiple device activation procedures into a single group-based activation message. The network sends one paging message that activates a group of devices simultaneously, reducing the number of individual signaling transactions from N separate messages to 1 consolidated message, thereby reducing network signaling load while maintaining activation reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The group activation message serves multiple functions: it acts as a paging message, an activation command, and a group management mechanism all in one. This multi-functional approach reduces the need for separate signaling procedures for each device while ensuring reliable activation of all group members

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Loss of energy

If group paging is used to reduce signaling load, then network resource utilization is improved, but collision probability in random access channel increases

Engineering Contradiction:

Improvenetwork resource utilizationVSAvoidrandom access channel success rate

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The patent dynamically adjusts the group size for activation based on current network conditions, particularly the load on the random access channel. When RACH congestion is detected, the system reduces group sizes to minimize collision probability, while under light load conditions, larger groups are used to maximize resource efficiency. This dynamic adaptation resolves the contradiction between resource utilization and access reliability

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of group size adaptively based on network conditions. By monitoring RACH utilization and adjusting the number of devices per activation group, the system optimizes the balance between reducing signaling overhead and maintaining successful access rates, preventing RACH congestion while efficient

Inventive Principle:

Principle #35Parameter changes

3Productivity

If larger group sizes are used for paging, then signaling efficiency is improved, but activation time increases due to coordination overhead

Engineering Contradiction:

Improvesignaling efficiencyVSAvoiddevice activation time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent implements dynamic group size adjustment that responds to real-time network conditions. When activation time sensitivity is high or network load is heavy, the system uses smaller groups to reduce coordination overhead and speed up activation. When time constraints are relaxed and resources are abundant, larger groups improve signaling efficiency. This dynamic behavior resolves the trade-off between efficiency and time

Inventive Principle:

Principle #15Dynamics

4Device complexity

If fixed group sizes are used for device activation, then system complexity is reduced, but adaptability to varying network conditions deteriorates

Engineering Contradiction:

Improveactivation mechanism complexityVSAvoidnetwork condition adaptability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a self-adjusting activation system that automatically monitors network conditions and adapts group sizes without external intervention. The system self-service by detecting RACH congestion, measuring activation success rates, and dynamically modifying group parameters accordingly. This self-service capability provides adaptability to varying conditions while maintaining relatively simple operational procedures

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system employs feedback mechanisms where activation outcomes and network load measurements are fed back to the group management function. Based on this feedback, the system adjusts group sizes adaptively - reducing groups when congestion is detected and increasing them when conditions improve. This feedback-driven approach enables adaptability while keeping the control mechanism relatively simple

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS9843923B2Adaptive group paging for a communication network

Publication Date: 2017.12.12 AT&T INTELLECTUAL PROPERTY I L P

AI summary

When traffic arrives from the network for an idle mobile device, the network executes device activation procedures to awaken the device, which can result in a significant amount of signaling to complete. Adaptive device activation mechanisms are provided that adapt to network conditions and potentially to machine-to-machine device application requests to realize scalable device activation without increasing the resources used for this purpose and without negatively impacting existing human-to-human or human-to-machine traffic.