Outdoor CORNET (O-CORNET) - Virginia...

June 10, 2014

Outdoor CORNET (O-CORNET) Vuk Maroevic, maroje@vt.edu

REU Class, Summer 2014

Contents

1. Introduction

2. O-CORNET Nodes

3. O-CORNET Access

4. Applications

5. How to Contribute

2

Objective

• Extend CORNET with software radio nodes for outdoor experiments

• 14 fixed SDR nodes

• 2 mobile SDR nodes

• 4 portable SDR nodes

• 1 sensing node (spectrum analyzer hooked to antenna)

• Fixed nodes located on rooftops of VT campus buildings

• GPS enabled nodes

• Cooperative transmission/reception techniques, cooperative sensing, multiple-input multiple-output (MIMO) antenna systems

3

O-CORNET Nodes

4

1

2

4

3

56

7

8

9

10

1112

13

14

5

1. Whittemore-1

2. Durham-1

3. Holden

4. Durham-2

5. Hahn-1

6. Hahn-2

7. Newman Library

8. Signature Engineering Bldg

9. Hutchenson

10.Holtzman

11.Williams-1

12.Williams-2

13.ECE Field Projects Lab

14.Whittemore-2

15.Sensing Node

14 Fixed Nodes

15

3550-3650 MHz NTIA Exclusion Zones

6

Wide band Antenna

Node Computer

N210 with SBX Gigabit Ethernet

Campus Ethernet

Fixed Filter

AUX Antenna

Normal Node

Multi-Antenna Node (Whittemore2) – in preparation

3550-3650 MHz NTIA Exclusion Zones

7

Node ComputerGigabit Ethernet

Campus Ethernet

N210 with SBX

N210 with SBX

N210 with SBX

Eth

ern

et S

wit

ch

N210 with SBX

MIM

O C

able

MIM

O C

able

Gigabit Ethernet

Gigabit Ethernet

10 MHz reference and 1 pps clock

Sensing Node – in preparation

3550-3650 MHz NTIA Exclusion Zones

8

Wide band Antenna

Campus Ethernet

Spectrum Analyzer

100-4000 MHz

GPS Antenna

2 Mobile Nodes – in preparation

3550-3650 MHz NTIA Exclusion Zones

9

Multiband Antenna

RF1

Node Computer

B210 USB 3

Campus Wireless Ethernet

Fixed Filter

Multiband Antenna

RF2

Fixed Filter

6V Rechargable

Radios on the move: on a cart, bicycle, in a car, bus, …

6 Portable Nodes – planned

3550-3650 MHz NTIA Exclusion Zones

10

Relocatable radios as needed

• E110 – USRP (embedded series)

• Can operate without PC, once programmed

How to Access

11

12

Network Name IP Address Building Name Node Coordinates

(Deg. N, E), WGS84

Status

ocornet1.ece.vt.edu 128.173.88.61 Whittemore Hall (1) 37.230709,-80.424608 Operational

ocornet2.ece.vt.edu 128.173.92.242 Durham Hall (1) 37.231949,-80.423282 Operational

ocornet3.ece.vt.edu 128.173.206.233 Holden Hall 37.229992,-80.422046 Operational

ocornet4.ece.vt.edu 128.173.93.170 Durham Hall (2), DSP Lab 37.231699,-80.423404 Operational

ocornet5.ece.vt.edu 128.173.156.114 Hahn Hall – North (1) 37.228402,-80.426056 Operational

ocornet6.ece.vt.edu 128.173.156.115 Hahn Hall – North (2) 37.228701,-80.426412 Operational

ocornet7.ece.vt.edu 128.173.126.5 Newman Library 37.228444,-80.419154 Operational

ocornet9.ece.vt.edu 128.173.71.11 Hutcheson Hall 37.22576,-80.423021 Ready

ocornet11.ece.vt.edu 128.173.170.1 Williams Hall (1) 37.22769,-80.424428 Ready

ocornet12.ece.vt.edu 128.173.170.2 Williams Hall (2) 37.22769,-80.424428 Operational

O-CORNET Fixed Node Access

13

$ ssh –XC <user_name>@ocornet2.ece.vt.edu

From Terminal Remote Desktop

O-CORNET Fixed Node Access (2)

14

Putty Remote Desktop: Tight VNC

1. Open a PUTTY session (or similar utility).

Enter a node name (or IP address), specify

port 22 and SSH.

2. When a terminal window opens you should

see a login prompt. Enter your assigned

user name.

3. Enter your password at the prompt. You will

get a welcome screen. Do not run

upgrades!

4. This is a command line on the remote O-

CORNET node. You will have user and

sudo privileges.

5. To exit, halt your user programs and logout.

Caution: Do not use “Shutdown” with no

options from the command line. This will

disable the node and require a physically

restarting it.

1. Open a terminal or putty session and ssh to the a node.

2. Start the VNC server: vncserver :1 -geometry 1024x768 -depth

16 -pixelformat rgb565 (or just “vncserver” for default settings).

3. Enter and verify a password for the VNC session (This is a self-

assigned password and does not always have to be repeated.)

4. Open the TightVNCViewer. Open the session ex:

128.173.92.242:1 or o-cornet2.ece.vt.edu (Durham1 Node)

5. Enter your O-CORNET user password when prompted.

6. You should be viewing the remote desktop.

7. Close your user software to exit Tight VNC. Close the vnc

session.

8. Return to the terminal or putty and close your vnc session ex:

vncserver :1 –kill

9. Close the ssh session.

Applications

15

Applications

16

• Experiment with waveforms, such as libLTE

• WiFi Transceiver

• WiFi Localization

• Zigbee PHY and MAC

• 802.15.4 localization

• MIMO

• CoMP

• Gen 1 RFID reader

• Tracking of moving node

• Radio Environment Maps (REM) create a data base for spectrum sharing

• …

How to Contribute 3550-3650 MHz NTIA Exclusion Zones

17

• Use O-CORNET and feedback your experience

• Setup and use GPS-reference clock/oscillators

• Setup and use mobile and/or portable nodes

• Replicate demos, create own demos

• …

Summary

18

O-CORNET extends VT-CORNET testbed

• 10+ fixed nodes spread around campus

• mobile nodes, to be deployed on moving objects/vehicles

• portable nodes, to complement fixed and mobile nodes

• sensing node: spectrum analyzer hooked to an antenna