Wireless communication system architecture having split MAC layer

• US 6,788,658 B1
• Filed: 01/11/2002
• Issued: 09/07/2004
• Est. Priority Date: 01/11/2002
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Airflow Networks, Inc.
• Inventors: Bims, Harry
• Primary Examiner(s): Ton, Dang
• Assistant Examiner(s): MEHRA, INDER P
• Application Number:
  US10/044,016
• Time in Patent Office: 970 Days
• Field of Search: 370/338, 370/386, 370/389, 370/392, 370/399, 370/419, 370/466, 370/467, 370/463, 370/476, 370/352, 370/351, 370/328-329, 370/313, 370/310, 370/346, 370/315, 370/323, 370/325, 370/401, 709/223
• US Class Current: 370/328
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04B 7/022 Site diversity; Macro-diversity using two or more spaced independent antennas H04B7/04
• CPC Class Codes: H04L 63/101 Access control lists [ACL]
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A communication architecture is described. In one embodiment, the architecture comprises a repeater having repeater MAC sublayer functionality and a switch coupled to the repeater and having switch MAC sublayer functionality. The repeater MAC sublayer functionality and the switch MAC sublayer functionality cooperate to perform the MAC functionality in a distributed fashion.

Claims

1. An architecture comprising:

a repeater having repeater MAC sublayer functionality; and

a switch coupled to the repeater and having switch MAC sublayer functionality,

wherein the repeater MAC sublayer functionality and the switch MAC sublayer functionality cooperate to execute a MAC layer in a distributed fashion,

wherein the repeater MAC sublayer functionality handles generating acknowledgement packets, and

wherein the switch MAC sublayer functionality handles multiple frame types during reception from repeaters including association requests and authentication requests.

2. The architecture defined in claim 1 wherein the MAC layer comprises an 802.11 MAC layer.

3. The architecture defined in claim 1 wherein the switch MAC sublayer functionality and the repeater MAC sublayer functionality communicate with each other.

4. The architecture defined in claim 3 wherein the repeater and the switch are coupled via a wired connection.

5. The architecture defined in claim 4 wherein the switch MAC sublayer and repeater MAC sublayer functionality communicate with each other using functionality through a network layer using tunneling.

6. The architecture defined in claim 1 wherein the repeater includes functionality to support a wireless physical layer.

7. The architecture defined in claim 6 wherein the wireless physical layer is an 802.11 PRY sublayer.

8. The architecture defined in claim 1 wherein the switch comprises a network layer.

9. The architecture defined in claim 8 wherein the network layer comprises a TCP/IP network layer.

10. An architecture comprising:

at least one mobile device to transmit and receive packets using an 802.11 family of protocols;

a plurality of repeaters to receive packets from the at least one mobile device; and

a switch communicably coupled to one or more of the plurality of repeaters, wherein a MAC layer functionality of the 802.11 family of protocols is divided into two portions,

wherein the plurality of repeaters performs one of the two portions and the switch performs the other portion,

wherein a repeater MAC sublayer handles generating acknowledgment packets, and

wherein a switch MAC sublayer handles multiple frame types during reception from the plurality of repeaters including association requests and authentication requests.

11. The architecture defined in claim 10 wherein the switch executes a switch MAC sublayer and each of the plurality of repeaters executes a repeater MAC sublayer, and further wherein the switch MAC sublayer and the repeater MAC sublayer communicate with each other.

12. The architecture defined in claim 11 wherein the switch MAC sublayer and repeater MAC sublayer communicate with each other using functionality through a network layer using tunneling.

13. The architecture defined in claim 10 wherein the plurality of repeaters and the switch are coupled via a wired connection.

14. The architecture defined in claim 10 wherein each of the plurality of repeaters includes functionality to support wireless physical layer.

15. The architecture defined in claim 14 wherein the wireless physical layer is an 802.11 PHY sublayer.

16. The architecture defined in claim 10 wherein the switch comprises a network layer.

17. The architecture defined in claim 16 wherein the network layer comprises a TCP/IP network layer.