Symmetric Coherent Link Degree,Adaptive Throughput-Transmission Power for WSN

Konstantinos Chantzis, Dimitrios Amaxilatis,Ioannis Chatzigiannakis, Jose RolimComputer Technology Institute and Press ”Diophantus” Patras, GreeceUniversity of Geneva Geneva, Switzerland

SCLD-A2TP DCOSS 2014

Introduction

The problem

I communication between WSN nodes could be problematic

I communication links suffer from quality, symmetry and noise

I high transmission power cause more trouble than help

I high transmission rates degrade communication

SCLD-A2TP DCOSS 2014

Introduction

The problem

I communication between WSN nodes could be problematic

I communication links suffer from quality, symmetry and noise

I high transmission power cause more trouble than help

I high transmission rates degrade communication

SCLD-A2TP DCOSS 2014

Introduction

Common Methods

Individual Link Based Algorithms

PCBL, ATPC, OD/TPC, ART

Degree Based Based Algorithms

LINT, LMA, LMN, DTPC, SCLD-ATP

SCLD-A2TP DCOSS 2014

Introduction

Common Methods

Individual Link Based Algorithms

PCBL, ATPC, OD/TPC, ART

Degree Based Based Algorithms

LINT, LMA, LMN, DTPC, SCLD-ATP

SCLD-A2TP DCOSS 2014

Introduction

RSSI, LQI and PRR

I show only a part of picture

I no globally suitable thresholds

I huge temporal characteristics

We need adaptation

SCLD-A2TP DCOSS 2014

Why Adaptive?

Connectivity graph

Constant Power setting versus Adaptive

SCLD-A2TP DCOSS 2014

Why Adaptive?

Transmission Power

Constant Powert setting versus Adaptive

SCLD-A2TP DCOSS 2014

Why Adaptive?

SCLDs

Constant Powert setting versus Adaptive

SCLD-A2TP DCOSS 2014

Design

Design Concept

I Combine multiple metrics

I Detect temporal characteristics

I User/Application defined thresholds

I 2 degrees of adaptation (power and transmission rate)

I Provide useful information to higher protocols

I Focus on real hardware and applications

SCLD-A2TP DCOSS 2014

Design

Design Concept

I Combine multiple metrics

I Detect temporal characteristics

I User/Application defined thresholds

I 2 degrees of adaptation (power and transmission rate)

I Provide useful information to higher protocols

I Focus on real hardware and applications

SCLD-A2TP DCOSS 2014

Design

Design Concept

I Combine multiple metrics

I Detect temporal characteristics

I User/Application defined thresholds

I 2 degrees of adaptation (power and transmission rate)

I Provide useful information to higher protocols

I Focus on real hardware and applications

SCLD-A2TP DCOSS 2014

Design

Design Concept

I Combine multiple metrics

I Detect temporal characteristics

I User/Application defined thresholds

I 2 degrees of adaptation (power and transmission rate)

I Provide useful information to higher protocols

I Focus on real hardware and applications

SCLD-A2TP DCOSS 2014

Design

Design Concept

I Combine multiple metrics

I Detect temporal characteristics

I User/Application defined thresholds

I 2 degrees of adaptation (power and transmission rate)

I Provide useful information to higher protocols

I Focus on real hardware and applications

SCLD-A2TP DCOSS 2014

Design

Design Concept

I Combine multiple metrics

I Detect temporal characteristics

I User/Application defined thresholds

I 2 degrees of adaptation (power and transmission rate)

I Provide useful information to higher protocols

I Focus on real hardware and applications

SCLD-A2TP DCOSS 2014

Design

Symmetric and Coherent Links

Bidirectional links with minimized message losses.

Requirements:

I Quality

I Symmetry

I Stability

Metrics:

I PRR and inv PRR

I Trust and inv Trust

I Dmin and Dmax

SCLD-A2TP DCOSS 2014

Design

Symmetric and Coherent Links

Bidirectional links with minimized message losses.

Requirements:

I Quality

I Symmetry

I Stability

Metrics:

I PRR and inv PRR

I Trust and inv Trust

I Dmin and Dmax

SCLD-A2TP DCOSS 2014

Design

Phase 1

SCLD-A2TP DCOSS 2014

Design

Phase 2

SCLD-A2TP DCOSS 2014

Implementation

SCLD Heuristics

I Individualistic

I Altruistic

I Balanced

I Hybrid (individualistic/altruistic)

I Hybrid+ (individualistic/balanced)

SCLD-A2TP DCOSS 2014

Real World Evaluation

General Settings

I 60 monitoring phases of 30seconds,

I Trust 3 (ranges from 0 to 6)

I SCLD 4 to 6 neighbors

I PRR over 70%,

I 1s fixed beacon rate for the1st daemon,

I 100 to 2s for the 2nd daemonwith a 50ms step,

I −30db to 0db transmissionpower with −6db step,

SCLD-A2TP DCOSS 2014

Real World Evaluation

General Settings

I 60 monitoring phases of 30seconds,

I Trust 3 (ranges from 0 to 6)

I SCLD 4 to 6 neighbors

I PRR over 70%,

I 1s fixed beacon rate for the1st daemon,

I 100 to 2s for the 2nd daemonwith a 50ms step,

I −30db to 0db transmissionpower with −6db step,

SCLD-A2TP DCOSS 2014

Real World Evaluation

Altruistic

SCLD-A2TP DCOSS 2014

Real World Evaluation

Balanced

SCLD-A2TP DCOSS 2014

Real World Evaluation

Hybrid

SCLD-A2TP DCOSS 2014

Real World Evaluation

Hybrid+

SCLD-A2TP DCOSS 2014

Thank You!

SCLD-A2TP DCOSS 2014