香港理工大学：Building Robust Wireless LAN for Industrial Control with DSSS-CDMA Cell Phone Network Paradigm

Building Robust Wireless LAN for Industrial Control with dsss-CDMa Cell Phone Network Paradigm Qixin Wang Department of Computing The Hong Kong Polytechnic University

Building Robust Wireless LAN for Industrial Control with DSSS-CDMA Cell Phone Network Paradigm Qixin Wang Department of Computing The Hong Kong Polytechnic University

(i The demand for real-time wireless communication Is Increasing Mechanical Freedom /Mobility Ease of Deployment /Flexibility

The demand for real-time wireless communication is increasing. Mechanical Freedom / Mobility Ease of Deployment / Flexibility

(i The demand for real-time wireless communication Is Increasing Cables for connecting various monitors to anesthesia EMR olar SOOO\ I remscope I DASI lari 1124 RGMI UPS Datex Ultim 411114

Cables for connecting various monitors to anesthesia EMR The demand for real-time wireless communication is increasing

The demand for real-time wireless communication Is Increasing Reduce the risk of tripping over Wires Future oday

The demand for real-time wireless communication is increasing. Reduce the risk of tripping over wires Today Future

oi What is real-time? Robotic Surgery: each task is a continuous loop of sensing(or actuating) jobs Each job 1. Must catch deadline 2 Does not have to be fast

What is real-time? Robotic Surgery: each task is a continuous loop of sensing (or actuating) jobs Each job: 1. Must catch deadline 2. Does not have to be fast

What is real-time? Aviation and Industrial control each task is a continuous loop of sensing(or actuating) jobs Each job 1. Must catch deadline 2 Does not have to be fast

What is real-time? Aviation and Industrial Control: each task is a continuous loop of sensing (or actuating) jobs Each job: 1. Must catch deadline 2. Does not have to be fast

(2 What is real-time? A typical real-time task is a continuous loop of periodic jobs A Job Job: (Period, EXe. Time, Deadline Deadline Exe. Time Exe. Time Exe. Time Time Period

What is real-time? A typical real-time task is a continuous loop of periodic jobs. Time Period Exe. Time Deadline Exe. Time Exe. Time Job: (Period, Exe. Time, Deadline) A Job

(2 What is real-time? A typical real-time task is a continuous loop of periodic jobs A Job Job: (Period, EXe. Time, Deadline Real-time each job catches deadline Real-time≠ running fast Deadline Exe. Time Exe. Time Exe. Time Time Period

What is real-time? A typical real-time task is a continuous loop of periodic jobs. Time Period Exe. Time Deadline Exe. Time Exe. Time Job: (Period, Exe. Time, Deadline) Real-time = each job catches deadline Real-time ≠ running fast A Job

Reliability and robustness is the top concern for real-time wireless communication Cannot back off under adverse wireless channel conditions

Reliability and Robustness is the top concern for real-time wireless communication. Cannot back off under adverse wireless channel conditions

Reliability and robustness is the top concern for real-time wireless communication Cannot back off under adverse wireless channel conditions

Reliability and Robustness is the top concern for real-time wireless communication. Cannot back off under adverse wireless channel conditions