Wireless Network Control System Packet Fragment Routing

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Solution Overview

Problem

Wireless communication systems face performance issues due to heavy loads or faults in backhaul communication links, leading to delays and poor user device performance when accessing communication services.

Innovation Solution

A wireless network control system that monitors individual transmission delays across multiple backhaul links, separates data packets into fragments, and selectively routes each fragment based on relative positions and transmission delays to optimize delivery to wireless access nodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If packet data is transferred over a single backhaul link, then the system is simple to operate, but the link becomes heavily loaded causing delays and faults

Engineering Contradiction:
Improvebackhaul link reliabilityVSAvoidbackhaul link configuration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments a data packet into multiple packet fragments and distributes them across multiple backhaul links. This segmentation allows the system to utilize multiple transmission paths simultaneously, preventing any single link from becoming overloaded while maintaining reliable data transfer. The control node divides the original packet into fragments, routes them through different backhaul links based on monitored transmission delays, and reassembles them at the wireless access node.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple backhaul links are used for packet transfer, then transmission reliability improves, but the system complexity increases

Engineering Contradiction:
Improvepacket delivery reliabilityVSAvoidpacket routing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The control node continuously monitors transmission delays on each backhaul link and uses this feedback information to dynamically select which links to use for packet fragment transmission. The system adjusts its routing decisions based on real-time delay measurements, automatically avoiding congested or faulty links. This feedback mechanism enables reliable packet delivery over multiple links without requiring complex manual configuration, as the system adapts automatically to changing network conditions.

Inventive Principle:
Principle #23Feedback

3Productivity

If packet fragments are routed based on transmission delays, then delivery efficiency improves, but the routing complexity increases

Engineering Contradiction:
Improvepacket delivery efficiencyVSAvoidfragment routing logic
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system changes the routing parameter from static link selection to dynamic selection based on transmission delay measurements. By monitoring delay parameters for each backhaul link and adjusting fragment routing decisions accordingly, the system optimizes delivery efficiency. Packet fragments are routed through links with lower measured delays, and the routing behavior adapts as delay parameters change over time. This parameter-based approach improves productivity while keeping the routing logic manageable through automated delay monitoring and comparison.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8654771B1Efficient transfer of packets over multiple backhaul links
Publication Date: 2014.02.18 T MOBILE INNOVATIONS LLC
  • US8654771B1 patent drawing
  • US8654771B1 patent drawing
  • US8654771B1 patent drawing

AI summary

What is disclosed is a wireless network control system configured to communicate with a wireless access node over a plurality of backhaul links. The wireless network control system includes a backhaul interface configured to monitor individual transmission delays for the backhaul links. The wireless network control system also includes a processing system configured to determine a data packet for transfer to the wireless access node and separate the data packet into a sequence of packet fragments. The processing system is also configured to select an individual one of the backhaul links for each of the packet fragments based on relative positions of the packet fragments in the sequence and based on the individual transmission delays of the backhaul links.