Architecture for a wireless area network node

• US 7,092,374 B1
• Filed: 09/27/2000
• Issued: 08/15/2006
• Est. Priority Date: 09/27/2000
• Status: Active Grant

• Current Assignee: Cirrus Logic Incorporated
• Original Assignee: Cirrus Logic Incorporated
• Inventors: Gubbi, Rajugopal R.
• Primary Examiner(s): Patel, Ajit
• Application Number:
  US09/671,960
• Time in Patent Office: 2,148 Days
• Field of Search: 370/338, 370/349, 370352-356, 370/401, 370/469, 370/328, 370/310.2, 370/351, 370/357, 370/465, 370/466, 370/310, 370/254, 370/463, 707/226, 707223-225, 707/229, 707/230, 707/235, 707/238, 707/249, 707/206, 707/203, 707/245, 707/220, 707/227, 707/228, 707/250
• US Class Current: 370/338
• 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: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A medium access control (MAC) layer for a node of a wireless local area network, which may be used in embedded, host and stand-alone applications, includes a hardware layer and a software layer. The hardware layer is configured to perform time-critical tasks and the software layer is configured to perform non-time critical tasks. The software layer includes multiple modules, such as one or more of a host communication agent, a bridging layer, a network management support module, a SBM-to-TAME conversion module, and a rate estimation module. Further, the software layer acts as the source of and the destination of MAC Service Data Units and is configured as a hierarchical structure in which functional unit blocks for associated elements of the hardware layer communicate with an application layer through respective device drivers and managers. Device drivers and managers communicate through a device manager layer.

Claims

1. A medium access control (MAC) layer for a node of a wireless local area network, comprising a hardware layer and a software layer, the hardware layer being configured to perform time-critical tasks and the software layer being configured to perform non-time critical tasks, wherein the software layer comprises multiple modules including one or more of a host communication agent, a bridging layer, a network management support module, a SBM-to-TAME conversion module, and a rate estimation module.

2. The MAC layer of claim 1 wherein the software layer acts as the source of and the destination of MAC Service Data Units.

3. The MAC layer of claim 1 configured for use in an embedded application.

4. The MAC layer of claim 1 configured for use in a stand-alone application.

5. The MAC layer of claim 1 configured for use in a host-based application.

6. The MAC layer of claim 5 wherein all communication layers above the MAC layer are configured to run on a host.

7. A medium access control (MAC) layer for a node of a wireless local area network, comprising a hardware layer and a software layer, the hardware layer being configured to perform time-critical tasks and the software layer being configured to perform non-time critical tasks, wherein the software layer is configured as a hierarchical structure in which functional unit blocks for associated elements of the hardware layer communicate with an application layer through respective device drivers and managers.

8. The MAC layer of claim 7 wherein the device drivers and managers communicate through a device manager layer.

9. The MAC layer of claim 7 wherein the software layer acts as the source of and the destination of MAC Service Data Units.

10. The MAC layer of claim 7 configured for use in an embedded application.

11. The MAC layer of claim 7 configured for use in a stand-alone application.

12. The MAC layer of claim 7 configured for use in a host-based application.

13. The MAC layer of claim 7 wherein all communication layers above the MAC layer are configured to run on a host.