Wireless network cell controller

• US 20050157690A1
• Filed: 05/28/2004
• Published: 07/21/2005
• Est. Priority Date: 05/28/2003
• Status: Abandoned Application

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Frank, James, Beach, Robert, Klein, John
• Application Number:
  US10/856,157
• Publication Number:
  US 20050157690A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A local area network is provided with a cell controller that operates with RF Ports and provides the higher level MAC functions of an access point. In addition the cell controller replaces the router usually used in the local area network to provide layer 3 routing and filtering functions.

Claims

1. In a wireless data communications system, wherein RF Ports are provided for communicating with mobile units, wherein at least one cell controller is provided for relaying data communications packets between a wired network and said RF Ports, and wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the improvement wherein said cell controller is further arranged to perform layer 3 network control functions.

2. The improvement specified in claim 1 wherein said layer 3 network control functions comprise filtering and switching functions.

3. The improvement specified in claim 1 wherein said cell controller is arranged to perform routing functions.

4. The improvement specified in claim 1 wherein said cell controller is arranged to perform Quality of Service functions.

5. The improvement specified in claim 1 wherein said cell controller is arranged to perform packet formation functions.

6. The improvement specified in claim 1 wherein said cell controller is arranged to perform addressing functions.

7. In a wireless data communications system, wherein RF Ports are provided for communicating with mobile units, wherein at least one cell controller is provided for relaying data communications packets between a wired network and said RF Ports, and wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the improvement wherein said cell controller is further arranged to perform a function of a router.

8. The improvement specified in claim 7 wherein said cell controller is arranged to perform asset and traffic management functions of a router.

9. The improvement specified in claim 7 wherein said cell controller is arranged to control the assignment of mobile units to the RF ports.

10. The improvement specified in claim 7 wherein said cell controller is arranged to manage bandwidth allocations based on mobile unit identifications.

11. A method for operating a wireless local area network having at least one RF port, a plurality of mobile units and a cell controller coupled to said RF port, comprising:

operating said RF port to relay signals received from mobile units to said cell controller and to relay signals received from said cell controller to said mobile units;

operating said cell controller to control association of said mobile units with said RF port, including sending and receiving association signals between said RF port and said cell controller;

operating said cell controller to send messages to and from said mobile unit via said RF ports; and

operating said cell controller to perform a network control function.

12. The method of claim 11 wherein said network control function is a layer 3 network control function.

13. The method of claim 12 wherein said layer 3 network control function is a routing function.

14. The method of claim 12 wherein said layer 3 network control function is a Quality of Service function.

15. The method of claim 12 wherein said layer 3 network control function is a packet formation function.

16. The method of claim 12 wherein layer 3 network control function is a filtering function.

17. The method of claim 12 wherein layer 3 network control function is an addressing function.

18. A method for operating a wireless local area network that is provided with RF Ports for communicating with mobile units and at least one cell controller for relaying data communications packets between a wired network and said RF Ports, wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the method comprising using said cell controller to perform the network functions of a router.

19. A method for operating a wireless local area network that is provided with RF Ports for communicating with mobile units and at least one cell controller for relaying data communications packets between a wired network and said RF Ports, wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the method comprising using said cell controller to control the assignment of mobile units to the RF ports.

20. A method for operating a wireless local area network that is provided with RF Ports for communicating with mobile units and at least one cell controller for relaying data communications packets between a wired network and said RF Ports, wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the method comprising using said cell controller manage bandwidth allocations based on mobile unit identifications.