Personal Access Point Bandwidth Estimation via Latency

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Solution Overview

Problem

Existing communication networks face challenges in accurately estimating bandwidth, particularly in multimedia and signaling communications, which can lead to service disruptions and poor quality of service due to inadequate backhaul bandwidth management.

Innovation Solution

A personal access point monitors backhaul bandwidth by measuring latency through probe packets and quality of service attributes, allowing it to determine available bandwidth and make informed decisions about admitting new sessions or adjusting priority traffic, thereby ensuring efficient bandwidth allocation and service continuity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If bandwidth estimation is not performed accurately, then service disruptions and poor quality of service occur, but implementing accurate bandwidth estimation requires monitoring and measurement mechanisms

Engineering Contradiction:
Improveservice continuityVSAvoidbandwidth monitoring mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The access point performs bandwidth estimation autonomously by utilizing its own existing multimedia and signaling communications as probe packets. The system sends packets through the backhaul link and measures latency using timestamps from the network gateway, eliminating the need for external measurement devices or complex monitoring infrastructure while maintaining reliable service continuity.

Inventive Principle:
Principle #25Self-service

2Productivity

If backhaul bandwidth is not monitored in real-time, then bandwidth allocation becomes inefficient, but implementing continuous monitoring increases system complexity

Engineering Contradiction:
Improvebandwidth allocation efficiencyVSAvoidreal-time monitoring system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The access point leverages its existing function of transmitting multimedia and signaling communications to also serve as the bandwidth measurement probe. By using the same packets for both service delivery and bandwidth estimation, the system achieves real-time bandwidth monitoring without adding separate monitoring infrastructure, thus improving allocation efficiency while avoiding increased complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system implements a feedback mechanism where the access point measures latency of its own outgoing packets through the backhaul link and uses this information to estimate available bandwidth. This feedback loop enables real-time awareness of backhaul conditions, allowing efficient bandwidth allocation decisions while using the access point's existing processing capabilities rather than requiring complex external monitoring systems.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If probe packets are transmitted frequently for accurate measurement, then measurement precision improves, but network traffic overhead increases

Engineering Contradiction:
Improvelatency measurement accuracyVSAvoidnetwork traffic volume
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The access point merges the bandwidth measurement function with its existing service traffic by using multimedia and signaling packets as probe packets. This consolidation allows the system to obtain accurate latency measurements through normal operational traffic rather than requiring separate dedicated measurement packets, thus improving measurement precision while avoiding additional network traffic overhead.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS7995493B2Estimating bandwidth in communication networks
Publication Date: 2011.08.09 OUTDOOR WIRELESS NETWORKS LLC
  • US7995493B2 patent drawing
  • US7995493B2 patent drawing
  • US7995493B2 patent drawing

AI summary

In general, a method includes monitoring, by a personal access point, an amount of backhaul bandwidth available for multimedia and signaling communications by measuring a level of latency associated with existing multimedia and signaling communications.