Method and system for multiple basic and extended service set identifiers in wireless local area networks

• US 7,492,744 B2
• Filed: 05/04/2004
• Issued: 02/17/2009
• Est. Priority Date: 02/06/2004
• Status: Active Grant

• Current Assignee: Extreme Networks, Inc.
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Klein, John, Dooley, John, Mulders, Marc, Gian, Alona
• Primary Examiner(s): FERGUSON, KEITH
• Application Number:
  US10/838,703
• Publication Number:
  US 20050180367A1
• Time in Patent Office: 1,750 Days
• Field of Search: 370/338, 370/328, 370/312, 370/329, 370/343, 455/426.1, 455/426.2, 455/422.1, 455/403, 455/414.1, 455/414.2, 455/414.3, 455/414.4, 455/572, 455/574, 4553431-3436, 455/550.1, 455450-453, 455/509, 455/436, 455/511, 455/513, 455/514, 455/500, 455/517, 455/445, 455/560
• US Class Current: 370/338
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• CPC Class Codes: H04L 61/5069 for group communication, multicast communication or broadcast communication
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks
• CPC Class Codes: H04L 63/105 Multiple levels of security
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• 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

An improved system and method using multiple basic and extended service set identifiers for a single radio in a wireless local area network is provided. The method includes the use of several basic service set identifiers for at least some access points, associating an extended service set identifier with each virtual local area network, and assigning each of the extended service set identifiers and associated local area network to one basic service set identifier.

Claims

1. A method for operating a wireless local area network comprising:

assigning a plurality of basic service set identifiers to at least one access point;

wherein the basic service set identifiers are simultaneously available to devices on the network, to enable the at least one of the access points to associate with and manage the at least one of the devices configured with one of the associated basic service set identifiers.

2. The method of claim 1 wherein said wireless local area network operates according to an 802.11 protocol.

3. A method for operating a wireless local area network to provide communications with a plurality of virtual local area networks, comprising:

assigning a plurality of basic service set identifiers to at least some access points;

mapping an extended service set identifier to each virtual local area network; and

assigning each of said extended service set identifiers and associated local area networks to one of said basic service set identifiers, said assignment being arranged to provide a single extended service set identifier for at least some of said basic service set identifiers.

4. A method as specified in claim 3 wherein said wireless local area network includes security arrangements, said security arrangements being associated with at least one of said virtual local area networks and associated extended service set identifier, and wherein communications using basic service set identifiers having a single extended service set identifier use security arrangements associated with said extended service set identifier.

5. A method as specified in claim 3 wherein at least some access points are assigned four basic service set identifiers and wherein no more than one extended service set identifier is assigned to three of said basic service set identifiers and wherein any additional extended service set identifiers are assigned to the remaining basic service set identifier.

6. A method as specified in claim 3 wherein at least some access points are assigned more than four basic service set identifiers and wherein no more than one extended service set identifier is assigned to three of said basic service set identifiers and wherein any additional extended service set identifiers are assigned to the remaining basic service set identifier.

7. A method for operating a wireless local area network, comprising:

assigning a plurality of basic service set identifiers to at least one access point;

associating one of said plurality of basic service set identifiers with a mobile unit;

operating said mobile unit in a power-save mode; and

waking said mobile unit from said power-save mode when said mobile unit receives a message which includes said associated basic service set identifier;

wherein the basic service set identifiers are simultaneously available to devices on the network.

8. The method of claim 7 wherein said wireless local area network operates according to an 802.11 protocol.