Dynamic Virtual Groups for Network Traffic Management

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Solution Overview

Problem

Inefficient network traffic management in wireless mesh-networked systems, particularly due to multicast message overhead and limitations in multicast table size, leading to network congestion, delayed message delivery, and user-noticeable delays.

Innovation Solution

Implementing dynamic virtual groups that determine the number of networked devices in a building zone and adjust message transmission to unicast when the device count is below a threshold, replacing multicast messages with multiple unicast messages to optimize network resource usage and reduce delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multicast messages are used to transmit control messages to multiple devices, then message delivery efficiency is improved, but network congestion and delays worsen due to multiple node retransmissions and limited multicast table size

Engineering Contradiction:
Improvemessage delivery efficiencyVSAvoidnetwork delays
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent segments the network traffic by dividing multicast messages into multiple unicast messages based on device groupings (virtual clusters). Instead of sending one multicast message that requires multiple retransmissions across the network, the system creates targeted unicast messages for specific device groups, reducing network congestion and delivery delays while maintaining efficient group communication.

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If multicast table size is increased to handle more concurrent multicast packets, then message transmission capacity is improved, but device complexity and resource usage worsen

Engineering Contradiction:
Improveconcurrent multicast packet capacityVSAvoidmulticast table management complexity
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent inverts the traditional approach by converting multicast messages into unicast messages rather than expanding multicast capabilities. Instead of increasing the multicast table size to handle more concurrent packets, the system uses unicast messaging to achieve the same goal of handling more device communications without the associated complexity of multicast table management and node retransmission tracking.

Inventive Principle:
Principle #13The other way round (Inversion)

3Reliability

If multiple nodes retransmit multicast packets to ensure delivery, then message reliability is improved, but network overhead and resource consumption worsen

Engineering Contradiction:
Improvemessage delivery reliabilityVSAvoidnetwork resource consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent extracts the retransmission function from the network nodes and consolidates it at the source device. Instead of having multiple nodes track and retransmit multicast packets, the source device sends targeted unicast messages directly to destination devices or device groups, eliminating the need for intermediate node retransmissions while maintaining reliable delivery.

Inventive Principle:
Principle #2Taking out (Extraction)

4Productivity

If unicast messages are sent to each device individually, then network congestion is reduced, but message transmission overhead increases due to multiple separate transmissions

Engineering Contradiction:
Improvenetwork throughputVSAvoidnumber of message transmissions
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent implements dynamic message transmission by adaptively choosing between unicast and multicast approaches based on real-time network conditions and device groupings. The system dynamically creates virtual clusters of devices and adjusts message routing accordingly, using unicast for small groups to reduce congestion and multicast for larger groups to minimize transmission overhead, optimizing both network throughput and message efficiency.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11082362B2Dynamic virtual groups apparatuses, systems, and methods
Publication Date: 2021.08.03 CALIFORNIA EASTERN LAB
  • US11082362B2 patent drawing
  • US11082362B2 patent drawing
  • US11082362B2 patent drawing

AI summary

A system, apparatus, and method for network traffic management. The method includes establishing a building zone corresponding with a physical space in the building, determining how many networked devices are in the building zone, determining a current multicast use level, establishing a virtual group threshold based on a current portion of a network multicast capacity that is being used, and unicast transmitting a message to a plurality of networked devices in the building zone when the number of networked devices in the building zone is less than the virtual group threshold.