Interference-Aware Channel Assignment in Multi-Radio Wireless Mesh Network - PowerPoint PPT Presentation

Loading...

PPT – Interference-Aware Channel Assignment in Multi-Radio Wireless Mesh Network PowerPoint presentation | free to download - id: 69fb39-ZTcxY



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Interference-Aware Channel Assignment in Multi-Radio Wireless Mesh Network

Description:

... mesh networks 802.11 radios Orthogonal channels availalbe Choose which channel to assign to which radio Objectives Minimize the interference within mesh ... – PowerPoint PPT presentation

Number of Views:0
Avg rating:3.0/5.0
Date added: 10 April 2019
Slides: 12
Provided by: JINW6
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Interference-Aware Channel Assignment in Multi-Radio Wireless Mesh Network


1
Interference-Aware Channel Assignment in
Multi-Radio Wireless Mesh Network
  • Prepared by -Amy

2
Outline
  • Overall issue and objectives
  • Contributions
  • Techniques

3
Overall issue and objectives
  • Dynamic channel assignment in multi-radio
    wireless mesh networks
  • 802.11 radios
  • Orthogonal channels availalbe
  • Choose which channel to assign to which radio
  • Objectives
  • Minimize the interference within mesh networks
    and between mesh networks and co-located wireless
    networks
  • Improve capacity of mesh netwoks by utilizing all
    available non-overlapping channels

4
Contributions
  • Dynamic interference-aware channel assignment
    algorithm
  • First solution address the problem in presence of
    interference from co-located wireless networks
  • Multi-radio confilict graph to model interference
    relationship between multi-radio mesh routers
  • Interference estimation scheme
  • Link redirection protocol

5
Technologies-1
  • Problem
  • Network topology change and flow disruption due
    to channel assignments
  • Solution
  • Default radio default channel
  • Link redirection

6
Technologies-2
  • Channel assignment goals
  • Minimize interference between routers in the mesh
  • Two end-point radios of a link must be assigned a
    common channel
  • Links in direct communication range should be
    tuned to non-overlapping channels
  • Tree shaped pattern expected, so give priority to
    links starting from gateway
  • Minimize interference between mesh network and
    co-located wireless networks

7
Technologies-3
  • Problem Interference estimation
  • Each router periodically measure interference
    level in its environment
  • For each supported channel
  • Estimate number of interfering radios channel
    bandwidth utilized by interfering radios
  • Two separate channel raking
  • Merge by taking average

8
Technologies-4
  • Problem Interference modeling
  • Multi-radio Conflict Graph (MCG)
  • Represent edges between mesh radios as vertices

9
Technologies-5
  • Channel Assignment algorithm
  • Default channel selection
  • Non-default channel selection (BFS_CA)
  • Channel Re-assignment Strategy

10
Q A
11
Thank You
About PowerShow.com