System and method for broadcasting application-specific information in wireless local area networks

• US 7,505,443 B2
• Filed: 06/23/2005
• Issued: 03/17/2009
• Est. Priority Date: 06/24/2004
• Status: Expired due to Fees

• Current Assignee: Kapsch TrafficCom AG (Datax Handelsgmbh)
• Original Assignee: Kapsch Trafficcom Inc. (Datax Handelsgmbh)
• Inventors: Chan, Johnny Yat Ming, Liu, Jun, McNew, Justin Paul
• Primary Examiner(s): Appiah, Charles N
• Assistant Examiner(s): CONTEE, JOY KIMBERLY
• Application Number:
  US11/166,509
• Publication Number:
  US 20050286456A1
• Time in Patent Office: 1,363 Days
• Field of Search: 370/338, 370/350, 370/312, 370/329, 455/411, 455/414.1, 707/103, 709/227, 714/37, 713/200
• US Class Current: 370/338
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 92/10 between terminal device and access point, i.e. wireless air interface

Abstract

A system and method for a novel broadcasting scheme (NBS) in a wireless local area network are described, which can operate with or without a network connection. The system permits transmission of application-specific data through a specific field in a beacon frame, the Service Set Identity (SSID). By implementing a NBS Processor in an AP and a NBS Parser in stations, the AP can broadcast application-specific data while the stations can automatically act upon the receipt of the broadcast.

Claims

1. A method for transmitting application data in a wireless network, the method comprising:

placing the application data in a buffer, wherein the application data includes data to execute a program unrelated to the wireless network;

placing the application data from the buffer in a beacon frame of the wireless network data communication format;

broadcasting the beacon frame including the application data;

receiving the beacon frame including data to execute the program unrelated to the wireless network; and

automatically executing the program unrelated to the wireless network responsive to the received data in the beacon frame.

2. The method of claim 1, further comprising compressing the application data before placing it in the beacon frame.

3. The method of claim 1, further comprising encoding the application data before placing it in the beacon frame.

4. The method of claim 1, further comprising encrypting the application data before placing it in the beacon frame.

5. The method of claim 1, wherein the wireless network is an IEEE 802.11 wireless local area network and the application data is transmitted in a Service Set Identity (SSID) field of the beacon frame.

6. A system for transmitting application data in a wireless network comprising:

an application module for receiving the application data, wherein the application data includes data to execute a program unrelated to the wireless network;

a processor for preparing the received application data and placing the received application data in a beacon frame;

a beacon frame generator for assembling and broadcasting the beacon frame; and

a receiver for receiving the beacon frame including data to execute the program unrelated to the wireless network and automatically executing the program unrelated to the wireless network responsive to the received data in the beacon frame.

7. The system of claim 6, further comprising means for compressing and encoding the application data before placing it in the beacon frame.

8. The system of claim 6, wherein there is no network connection established between a transmitter broadcasting the beacon frame and the receiver.

9. The system of claim 6, further comprising means for encrypting the application data before placing it in the beacon frame.

10. The system of claim 6, wherein the wireless network is an IEEE 802.11 wireless local area network and the application data is transmitted in a Service Set Identity (SSID) field of the beacon frame.

11. A method for data communication in a wireless network, the method comprising:

placing an application data to be transmitted in a beacon frame of the wireless network data communication format, wherein the application data includes data to execute a program unrelated to the wireless network;

broadcasting the beacon frame including the application data through the wireless network;

receiving the broadcast beacon frame;

validating the frame as a beacon frame;

extracting the application data from the beacon frame; and

automatically executing the program unrelated to the wireless network responsive to the received data in the beacon frame.

12. The method of claim 11, further comprising compressing the application data before placing it in the beacon frame.

13. The method of claim 11, further comprising encoding the application data before placing it in the beacon frame.

14. The method of claim 11, further comprising encrypting the application data before placing it in the beacon frame.

15. The method of claim 11, wherein the wireless network is an IEEE 802.11 wireless local area network and the application data is broadcast in a Service Set Identity (SSID) field of the beacon frame.

16. The method of claim 11, wherein the the receiving, validating, extracting, and automatically executing are performed before a network connection is established.

17. The method of claim 11, wherein the application data is location based information displayed for a user.

18. The method of claim 11, wherein the application data is advertisement displayed for a user.

19. A system for data communication in a wireless network comprising:

a processor for placing an application data to be transmitted in a beacon frame of the wireless network data communication format, wherein the application data includes data to execute a program unrelated to the wireless network;

a frame generator for assembling and broadcasting the beacon frame including the application data through the wireless network;

a receiver for receiving the broadcast beacon frame; and

a parser for extracting the application data from the beacon frame and automatically executing the program unrelated to the wireless network responsive to the received data in the beacon frame.

20. The system of claim 19, wherein the wireless network is an IEEE 802.11 wireless local area network and the application data is broadcast in a Service Set Identity (SSID) field of the beacon frame.

21. The system of claim 19, further comprising means for compressing the application data before placing it in the beacon frame;

and means for decompressing the received compressed data.

22. The system of claim 19, further comprising means for encoding the application data before placing it in the beacon frame;

and means for decoding the received encoded data.

23. The system of claim 19, further comprising means for encrypting the application data before placing it in the beacon frame;

and means for decrypting the received encrypted data.