Cell controller for multiple wireless local area networks

• US 8,699,473 B2
• Filed: 01/11/2007
• Issued: 04/15/2014
• Est. Priority Date: 03/17/2000
• Status: Expired due to Term

• Current Assignee: Symbol Technologies, LLC (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Beach, Robert
• Primary Examiner(s): Hamza, Faruk
• Assistant Examiner(s): GUADALUPE CRUZ, AIXA AMYR
• Application Number:
  US11/622,159
• Publication Number:
  US 20070109994A1
• Time in Patent Office: 2,651 Days
• Field of Search: None
• US Class Current: 370/338
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/14 Multichannel or multilink protocols
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A wireless local area network is provided with at least one cell controller and simplified RF ports which are configured to provide lower level media access control functions. Higher level media access control functions are provided in a cell controller, which may service one or more RF ports that are capable operating with at least two wireless local area subnetworks. Mobile units can also be configured with the higher level media access control functions being performed in a host processor.

Claims

1. A cell controller adapted for a wireless communication system and comprising:

a processor operatively coupled, via a wired network connection, to an RF port housed in a first housing, wherein the processor is housed in a second housing that is physically separate and spatially remote from said first housing, and wherein the RF port is configured to perform a first plurality of functions of the wireless communication standard protocol;

a memory housed in said second housing, said memory adapted to store software for a second plurality of functions of the wireless communication standard protocol;

wherein the processor is receptive of a first signal from said RF port from a first Wireless Local Area Network (WLAN) having a first coverage area and a second signal from said RF port from a second WLAN having a second coverage area that at least partially overlaps said first coverage;

said processor adapted to execute said software stored in said memory to perform said second plurality of functions of the wireless communication standard protocol for said first signal and said second signal, wherein the first WLAN and the second WLAN are accessible at substantially the same time;

wherein the first plurality of functions and the second plurality of functions each include at least one media access control (MAC) function of the wireless communication standard protocol.

2. The cell controller of claim 1, wherein said wireless communication standard protocol is an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard protocol.

3. The cell controller of claim 1,

wherein said at least one media access control function of the second plurality of functions is a non-time-critical MAC function.

4. The cell controller of claim 3, wherein at least one of said non-time-critical MAC functions is a retransmission function.

5. The cell controller of claim 3, wherein at least one of said non-time-critical MAC functions is a rate control function.

6. The cell controller of claim 3, wherein at least one of said non-time-critical MAC functions is a host interface function.

7. A wireless communication method comprising:

providing a cell controller including a first housing, the cell controller configured to perform a first plurality of functions of a wireless communication standard protocol;

providing an RF port including a second housing physically separate from said first housing and operatively coupled to the cell controller via a wired network connection, the RF port configured to perform a second plurality of functions of the wireless communication standard protocol;

receiving a first signal from said RF port from a first Wireless Local Area Network (WLAN) having a first coverage area;

receiving a second signal from said RF port from a second WLAN having a second coverage area that at least partially overlaps said first coverage area; and

performing the first plurality of functions of the wireless communication standard protocol for said first signal and said second signal, wherein the first WLAN and the second WLAN are accessible at substantially the same time, and wherein the first plurality of functions and the second plurality of functions each include at least one media access control (MAC) function of the wireless communication standard protocol.

8. The method of claim 7, wherein said wireless communication standard protocol is an Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard protocol.

9. The method of claim 7,

wherein said first plurality of functions are non-time-critical MAC functions.

10. The method of claim 9, wherein at least one of said non-time-critical MAC functions is a retransmission function.

11. The method of claim 9, wherein at least one of said non-time-critical MAC functions is a rate control function.

12. The method of claim 9, wherein at least one of said non-time-critical MAC functions is a host interface function.