Dynamic Backhaul Bandwidth Management for Wireless Networks

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Solution Overview

Problem

Static backhaul bandwidth provisioning limits the number of access points that a backhaul provider can support, leading to higher costs and reduced revenue due to unused bandwidth, as providers conservatively provision for theoretical maximum loads rather than actual needs.

Innovation Solution

Implementing dynamic backhaul bandwidth management, where access points can request additional bandwidth based on changing subscriber loads, and a backhaul network entity determines and allocates available bandwidth, allowing for real-time adjustments and optimizations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If static backhaul bandwidth provisioning is used based on theoretical maximum load, then network reliability is ensured under peak conditions, but bandwidth utilization efficiency deteriorates due to unused capacity

Engineering Contradiction:

Improvenetwork reliabilityVSAvoidbandwidth utilization efficiency

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements dynamic backhaul bandwidth provisioning that adjusts bandwidth allocation in real-time based on actual network load conditions. The system transitions from static provisioning to dynamic adjustment, allowing the backhaul bandwidth to adapt to changing subscriber loads and traffic patterns, thereby improving utilization efficiency while maintaining reliability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the bandwidth parameter dynamically based on measured network conditions. The backhaul bandwidth allocation is adjusted as a variable parameter rather than a fixed value, responding to changes in subscriber load, traffic demand, and network utilization metrics to optimize both reliability and efficiency.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conservative bandwidth provisioning is implemented for theoretical maximum capacity, then quality of service is maintained under peak load, but the number of supported access points deteriorates due to limited available bandwidth

Engineering Contradiction:

Improvequality of serviceVSAvoidnumber of supported access points

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent enables dynamic bandwidth allocation that allows multiple access points to share backhaul capacity flexibly. Instead of provisioning for worst-case scenarios for each access point, the system dynamically adjusts bandwidth distribution based on actual usage, enabling support for more access points within the same total bandwidth capacity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The backhaul bandwidth is designed to serve multiple access points and subscriber loads universally rather than being dedicated to specific worst-case scenarios. The dynamic provisioning system allows the same bandwidth resource to adaptively serve different combinations of access points and users based on real-time conditions.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If static bandwidth allocation is used, then network simplicity is maintained, but adaptability to changing network conditions deteriorates

Engineering Contradiction:

Improvenetwork simplicityVSAvoidadaptability to network conditions

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a self-service bandwidth provisioning system where the network automatically monitors its own load conditions and adjusts bandwidth allocation without external intervention. The system self-manages the complexity of dynamic provisioning while maintaining simplicity in operation, as the adaptation occurs automatically based on measured network parameters.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system incorporates feedback mechanisms that continuously monitor network load, bandwidth utilization, and subscriber demands. This feedback information is used to automatically adjust bandwidth allocation, creating a closed-loop system that adapts to changing conditions while managing complexity through automated control rather than manual configuration.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS10091691B2Methods and apparatuses for dynamic backhaul bandwidth management in wireless networks

Publication Date: 2018.10.02 CALIX INC

AI summary

Techniques for dynamic backhaul bandwidth provisioning are described herein. For example, a method may include determining a potential subscriber user equipment load change, transmitting a backhaul bandwidth change request message based a potential subscriber UE load change, wherein the backhaul bandwidth change request message includes a requested backhaul bandwidth level, receiving a backhaul bandwidth change reply message in response to transmitting the backhaul bandwidth change request message, implementing a subscriber UE load change response corresponding to the potential subscriber UE load change based on receiving the backhaul bandwidth change reply message. Further example methods disclosed may include receiving a backhaul bandwidth change request message, wherein the backhaul bandwidth change request message includes a requested backhaul bandwidth level, calculating an available backhaul bandwidth level corresponding to a backhaul, transmitting a backhaul bandwidth change acknowledgement message when the available backhaul bandwidth level supports the requested backhaul bandwidth level.