Infrastructure for wireless LANS

• US 8,687,610 B2
• Filed: 12/08/2009
• Issued: 04/01/2014
• Est. Priority Date: 01/16/1998
• Status: Expired due to Term

• Current Assignee: Extreme Networks, Inc.
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Beach, Robert, Schwede, Heiner
• Primary Examiner(s): KHAJURIA, SHRIPAL K
• Application Number:
  US12/633,302
• Publication Number:
  US 20100128710A1
• Time in Patent Office: 1,575 Days
• Field of Search: 370/338
• 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 central computer;

an access point configured to be associated with and communicate data packets from the central computer to one or more mobile units using a wireless data communication standard protocol, wherein the data packets each include a mobile unit destination address and a source address; and

a switching hub connected to the central computer through a first wired network connection, and connected to the access point via a second wired network connection at a port of the switching hub;

wherein the switching hub includes a routing list correlating the source address with the port of the data switching hub;

wherein, upon association of the one or more mobile units with the access point, the hub updates the routing list to include association of the mobile unit with the port of the data switching hub to which the access point is connected;

wherein the switching hub is configured to determine the destination of the packet based on the destination address and route the packet to the access point if the destination of the packet is a mobile unit associated with the access point such that the access point acts merely as a conduit sending packets received from the hub and from the mobile units;

wherein the access point is connected to the switching hub via an Ethernet connection;

wherein the access point receives electrical power via the Ethernet connection;

wherein the switching hub includes DC power supply coupled to a cable providing the Ethernet connection;

wherein the cable includes a first pair of the wire pairs coupled to the DC power supply, and a second pair of wire pairs for communicating the data packets to the access point; and

wherein a choke circuit is coupled between the DC power supply and the access point.

2. The wireless local area network system of claim 1, wherein the access point includes a connecter jack configured to be directly received by a socket provided in a surface, wherein the socket is communicatively coupled to the switching hub.

3. The wireless local area network system of claim 1, wherein the access point is further configured to prevent the relaying of predetermined types of data packets.

4. The wireless local area network system of claim 1, wherein the wireless data communication standard protocol is the communications protocol of the IEEE 802.11 protocol.