Release v2.0 -- September 30, 2002

Note: We are constantly updating this page as we extend WRAPI's functionality. Please refresh your browser to make sure you have the latest version of this page.

WRAPI 2.0 is now available. Check it out.

We have created a distribution alias for all users of WRAPI.
To subscribe, please send email to majordomo@cs.ucsd.edu, with the text "subscribe radar" in the body (NOT in the subject)

Overview

WRAPI is a software library that allows applications running in user space on mobile end stations to query information about the IEEE 802.11 network they are attached to. WRAPI 1.0 is implemented on the Windows XP operating system and is a hardware-independent tool that works with any IEEE 802.11b wireless network hardware vendor.

Hardware and Software Requirements

The hardware requirements for running WRAPI are as follows:

A wireless LAN based on the IEEE 802.11b standard, configured with one or more access points in infrastructure mode.

A high-performance laptop or workstation with an X86 processor.

Wireless Network adapters (NICs) from any hardware vendor for an IEEE 802.11b-based wireless LAN.

The software requirements are as follows:

Windows XP operating system.
Windows XP miniport drivers for the NIC
Windows XP DDK (driver development kit)

Supported Features

WRAPI provides an interface to applications requiring information about the Wireless LAN. The parameters that are supported are listed in the table below. The entries in the "Query" and "Set" columns denote whether the parameter is "read-only", "write-only", or "read-write".

Parameter	Query	Set
Service Set Identifier (SSID)	Yes	Yes
Basic Service Set Identifier (BSSId)	Yes	Yes
Network Types Supported	Yes	No
Network Type in Use	Yes	Yes
Transmit Power Level	Yes	Yes
Received Signal Strength	Yes	No
Received Signal Strength Trigger	Yes	Yes
Infrastructure Mode	Yes	Yes
Fragmentation Threshold	Yes	Yes
RTS Threshold	Yes	Yes
Number of Antennas	Yes	No
Receive Antenna Selected	Yes	Yes
Transmit Antenna Selected	Yes	Yes
Supported Rates	Yes	Yes
Desired Rates	Yes	No
Configuration	Yes	Yes
Statistics	Yes	No
Add WEP	No	Yes
Remove WEP	No	Yes
Disassociate	No	Yes
Power Mode	Yes	Yes
BSSId List	Yes	No
BSSId List Scan	No	Yes
Authentication Mode	Yes	Yes
Privacy Filter	Yes	Yes

Table 1: List of WLAN Parameters supported by WRAPI

Acknowledgments

Our research is supported by a grant from Microsoft Research, Redmond WA. We would specially like to thank Victor Bahl for providing us the expertise and contacts for support with Windows technologies.

An earlier version of WRAPI was developed at Microsoft Research, WA by Gavin Holland. This version worked only with wireless hardware from Aironet Inc. and had similar functionality. Our version of WRAPI is hardware-agnostic, and can work with any wireless hardware vendor.

For further information on WRAPI, contact Anand Balachandran.