Media access controller for high bandwidth communication media and method of operation thereof

• US 7,336,633 B2
• Filed: 05/28/2002
• Issued: 02/26/2008
• Est. Priority Date: 05/29/2001
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Agere Systems Incorporated (Broadcom, Inc.)
• Inventors: Kruys, Jan P.
• Primary Examiner(s): Sam; Phirin
• Application Number:
  US10/156,211
• Publication Number:
  US 20020181434A1
• Time in Patent Office: 2,100 Days
• Field of Search: None
• US Class Current: 370/330
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

An access control method for a medium, a media access controller and a wireless communication system incorporating the method or the controller. In one embodiment, the method includes: (1) allowing first and second devices to employ a control channel defined in the medium to identify mutually available ones of a plurality of time and frequency dependent data communication elements defined in the medium and (2) thereafter granting the first and second devices access to the mutually available ones to enable data communication therebetween.

Claims

1. An access control method for a medium, comprising:

allowing first and second devices to employ a control channel defined in said medium to identify mutually available ones of a plurality of time and frequency dependent data communication elements defined in said medium; and

thereafter granting said first and second devices access to said mutually available ones to enable data communication therebetween.

2. The method as recited in claim 1 wherein said medium has a bandwidth of at least 50 Mbits per second.

3. The method as recited in claim 1 wherein said data communication is half-duplex.

4. The method as recited in claim 1 further comprising broadcasting a time base signal over said control channel to align said first and second devices temporally.

5. The method as recited in claim 1 further comprising receiving occasional transmissions from said first and second devices regarding free and in-use data communication elements.

6. The method as recited in claim 1 wherein said identify is performed adaptively.

7. The method as recited in claim 1 wherein said first device determines a number of data communication elements to employ for said data communication based on a desired data transmission rate.

8. A media access controller, comprising:

a contention controller that employs a control channel defined in said medium to identify mutually available ones of a plurality of time and frequency dependent data communication elements defined in said medium; and

a data transmitter that thereafter employs said mutually available ones to enable data communication therebetween.

9. The controller as recited in claim 8 wherein said medium has a bandwidth of at least 50 Mbits per second.

10. The controller as recited in claim 8 wherein said data communication is half-duplex.

11. The controller as recited in claim 8 wherein said contention controller broadcasts a time base signal over said control channel to align said first and second devices temporally.

12. The controller as recited in claim 8 wherein said contention controller receives occasional transmissions from said first and second devices regarding free and in-use data communication elements.

13. The controller as recited in claim 8 wherein said identify is performed adaptively.

14. The controller as recited in claim 8 wherein said contention controller determines a number of data communication elements to employ for said data communication based on a desired data transmission rate.

15. A wireless communication system, comprising:

a plurality of wireless devices including first and second wireless devices;

a wireless medium interconnecting said plurality of wireless devices;

a control channel defined in said wireless medium; and

a plurality of time and frequency dependent data communication elements defined in said wireless medium, said first and second wireless devices employing said control channel to identify mutually available ones of said plurality of time and frequency dependent data communication elements, access to said mutually available ones being thereafter granted to said first and second wireless devices to enable data communication therebetween.

16. The system as recited in claim 15 wherein said wireless medium has a bandwidth of at least 50 Mbits per second.

17. The system as recited in claim 15 wherein said data communication is half-duplex.

18. The system as recited in claim 15 wherein a time base signal is broadcast over said control channel to align said first and second wireless devices temporally.

19. The system as recited in claim 15 wherein said first and second wireless devices generate occasional transmissions regarding free and in-use data communication elements.

20. The system as recited in claim 15 wherein said identify is performed adaptively.

21. The system as recited in claim 15 wherein said first device determines a number of data communication elements to employ for said data communication based on a desired data transmission rate.