programming ad hoc networks of mobile and resource constrained devices
Download
Skip this Video
Download Presentation
Programming Ad-hoc Networks of Mobile and Resource-Constrained Devices

Loading in 2 Seconds...

play fullscreen
1 / 12

Programming Ad-hoc Networks of Mobile and Resource-Constrained Devices - PowerPoint PPT Presentation


  • 133 Views
  • Uploaded on

Programming Ad-hoc Networks of Mobile and Resource-Constrained Devices. Yang Ni, Ulrich Kremer, Adrian Stere, Liviu Iftode Rutgers University Presented at PLDI ‘05 Presented by Troy Trimble. Summary. MANETs SpatialViews Syntax and Semantics Implementation Conclusion/Questions. MANETs.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Programming Ad-hoc Networks of Mobile and Resource-Constrained Devices' - ebony-grimes


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
programming ad hoc networks of mobile and resource constrained devices

Programming Ad-hoc Networks of Mobile and Resource-Constrained Devices

Yang Ni, Ulrich Kremer, Adrian Stere, Liviu Iftode

Rutgers University

Presented at PLDI ‘05

Presented by Troy Trimble

summary
Summary
  • MANETs
  • SpatialViews
  • Syntax and Semantics
  • Implementation
  • Conclusion/Questions
manets
MANETs
  • Mobile Ad-hoc Networks
  • PDAs, Smart Phones, Laptops, Cars
  • Multiple mediums
    • 802.11, bluetooth, radio
  • Form networks around unstable links
  • Examples (Shameless Plug)
    • Sensor Networks, RescueMesh (WIISARD)
programming for manets
Programming for MANETs
  • Concern is power
    • MANETs usually on low power devices
  • What can we give up?
    • Quality of Result (QoR)
spatialviews
SpatialViews
  • Nodes
    • Defined by location in space, time and services
  • Virtual Network
    • Collection of virtual nodes
  • Network Iterator
    • Used to iterate through the nodes in the network
    • Can be a tool to control QoR vs. Power
syntax and semantics
Services

Java Interfaces

Location

GPS, Cricket (MIT)

Time

Granularity, limit

public interface LightSensor {

public float read();

...

}

public interface SpaceDefs {

public static final Space CampusB=new Rectangle(...);

...

}

public class AverageLighting {

public void static main(String[] args) {

sumreduction float s=0;

sumreduction int n=0;

spatialview sv=LightSensor @ SpaceDefs.CampusB % 320;

visiteach x : sv every 1.0 forever

{ s += x.read(); n++; }

if (n>0)

System.out.println(Float.toString(s/n));

}

}

Syntax and Semantics
syntax and semantics cont
Syntax and Semantics cont.
  • Program vars
    • Local – r/w in defined iter, ro in nested iters
    • Container – r/w in defined iter, wo in nested iters
    • Reduction – associated with specific operation
  • Service vars
    • Never leave node, r/w in defined iter
implementation
Implementation
  • Modified Java
  • SmartMessages
    • Transport
    • Java, KiloByte VM and CLDC library
iteration types
Iteration Types
  • Serial
    • Poor failure model
    • Can also do flooding to help
  • Geographic iteration
    • Uses locations and greedy algorithm
  • Geographic Flood
    • Cloning based on quadtree, not network topology
extras
Extras
  • Loop Flattening
    • Optimization for services on the same box
  • Security
    • Assumed
conclusions
Conclusions
  • MANETs pose a benefit to society
  • New programming challenges are given by these environments
    • Recognized by academic community with conferences like International Conference for Compilers, Architecture and Synthesis for Embedded Systems
  • SpatialViews supplies a good interface for dealing with these new problems on MANETs
ad