Infrastructure for wireless LANs

• US 7,653,033 B2
• Filed: 02/23/2004
• Issued: 01/26/2010
• Est. Priority Date: 01/16/1998
• Status: Active Grant

• Current Assignee: Extreme Networks, Inc.
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Schwede, Heiner, Beach, Robert
• Primary Examiner(s): LEE, CHI HO A
• Application Number:
  US10/784,588
• Publication Number:
  US 20040165550A1
• Time in Patent Office: 2,164 Days
• Field of Search: 370/338, 370/389
• 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: H04W 52/0203 in the radio access network or backbone network of wireless communication networks
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless data communications system includes simplified access points which are connected to ports of an intelligent switching hub. The switching hub relays data packets to the access points in accordance with destination address data in the data communications. In a preferred arrangement the access points are provided with power over the data cable from the switching hub location.

Claims

1. A wireless Local Area Network system comprising:

a wireless communication server; and

one or more access points operably connected to the wireless communication server, the access points adapted to wirelessly transmit and receive data to and from remote units using a radio frequency communications such that the remote units form part of a wireless Local Area Network providing functionality in accordance with a wireless communication standard protocol, wherein the wireless communication server provides the functionality of the wireless communication standard protocol that performs centralized filtering and forwarding of data to be transmitted to the remote units, wherein the data comprises a packet including a packet source address and packet destination address;

wherein the wireless communication server includes at least one destination table relating remote units to access points with which said remote units are associated, wherein the destination table is used in conjunction with the packet destination address to forward the data to the remote units.

2. The wireless Local Area Network system of claim 1 wherein the wireless communication server is connected through conventional network elements to the access points.

3. The wireless Local Area Network system of claim 1 wherein the wireless communication server and the one or more access points are connected to an existing wired network.

4. The wireless Local Area Network system of claim 3 wherein the existing wired network is an Ethernet network.

5. The wireless Local Area Network system of claim 1 wherein the wireless communication server is connected to the one or more access points through a direct cable connection.

6. The wireless Local Area Network system of claim 1 further comprising at least one additional wireless communication server.

7. The wireless Local Area Network system of claim 6, wherein said at least one additional wireless communication server provides serves for additional access points.

8. The wireless Local Area Network system of claim 1, wherein the access points transmit the radio frequency wireless signals using an unlicensed frequency band.

9. The wireless Local Area Network system of claim 1, wherein the system provides automatic association of the access points and the wireless communication server.

10. The wireless Local Area Network system of claim 1, wherein the wireless communication server filters network data based on a remote unit identification.

11. The wireless Local Area Network system of claim 1, wherein the wireless communication standard protocol is an Institute for Electrical and Electronics Engineers (IEEE) 802.11 standard protocol.