Wireless terminal operations within wireless local area network

• US 7,333,462 B2
• Filed: 09/03/2003
• Issued: 02/19/2008
• Est. Priority Date: 07/26/2002
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Thermond, Jeffrey L., Palm, Stephen
• Primary Examiner(s): ZEWDU, MELESS NMN
• Application Number:
  US10/653,798
• Publication Number:
  US 20050047380A1
• Time in Patent Office: 1,630 Days
• Field of Search: 4552261-2263, 455/41.2, 455/550, 455/556.2, 455/562.1, 455/575.7, 455/95, 455/450, 455/67.13, 455 69- 70, 455/127.2, 455/115.3, 455/161.3, 455/250.1, 455/63.1, 455/63.4, 455/25, 455/65, 455/19, 455 82- 83, 455/127.1, 455/133, 455/134, 4552341-2342, 455/138, 455/231.1, 455/245.1, 455/422.1, 455/434, 455524-525, 455/550.1, 451/07, 455/61, 370328-329, 370/310, 370/341, 370/395.52, 370/395.53, 370216-217, 370338-339, 370/221, 370/332, 370/908, 370242-246, 342153-154, 342158-360, 342/375, 342367-368, 342/371, 342/385, 243/417, 243/419, 343/700, 343/766, 343/765, 343/853, 343/700.MS
• US Class Current: 370/338
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/021 adapted for Wireless Local Loop operation
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A wireless terminal operates within a Wireless Local Area Network (WLAN) and includes a directional antenna, a radio frequency unit operably coupled to the directional antenna, and a processor operably coupled to the radio frequency unit. The processor controls the operation of the wireless terminal to operate within the WLAN to assist in WLAN service management. In its operations, the wireless terminal listens to a plurality of beacons transmitted by a corresponding plurality of Wireless Access Points (WAPs) of the WLAN. The wireless terminal then characterizes the plurality of beacons with regard to signal quality. Based upon the characterization, the wireless terminal selects a desired WAP of the plurality of WAPs. The wireless terminal then associates with the desired WAP of the plurality of WAPs. Finally, the wireless terminal adjusts a gain vector of a servicing antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.

Claims

1. A method for operating a wireless terminal within a Wireless Local Area Network (WLAN), the method comprising:

receiving capability data carried by at least some of a plurality of beacons transmitted by a corresponding plurality of Wireless Access Points (WAPs) of the WLAN, wherein the capability data indicates whether a corresponding access point is capable of directional antenna servicing;

processing the received capability data to select a desired WAP of the plurality of WAPs;

associating with the desired WAP of the plurality of WAPs; and

adjusting the gain vector of a servicing antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.

2. A method for operating a wireless terminal within a Wireless Local Area Network (WLAN), the method comprising:

receiving capability data carried by at least some of a plurality of beacons transmitted by a corresponding plurality of Wireless Access Points (WAPs) of the WLAN, wherein the capability data indicates whether a corresponding access point is capable of transmit power control;

processing the received capability data to select a desired WAP of the plurality of WAPs;

associating with the desired WAP of the plurality of WAPs; and

adjusting the gain vector of a servicing antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.

3. A wireless terminal that operates within a Wireless Local Area Network (WLAN), the wireless terminal comprising:

a directional antenna;

a radio frequency unit operably coupled to the directional antenna; and

a processor operably coupled to the radio frequency unit, wherein the processor operates to execute;

a plurality of instructions that cause the wireless terminal to receive capability data carried by at least some of a plurality of beacons transmitted by a corresponding plurality of Wireless Access Points (WAPs) of the WLAN, wherein the capability data indicates whether a corresponding access point is capable of directional antenna servicing;

a plurality of instructions that cause the wireless terminal to processing the received capability data to select a desired WAP of the plurality of WAPs;

a plurality of instructions that cause the wireless terminal to associate with the desired WAP of the plurality of WAPs; and

a plurality of instructions that cause the wireless terminal to adjust a gain vector of the directional antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.

4. A wireless terminal that operates within a Wireless Local Area Network (WLAN), the wireless terminal comprising:

a directional antenna;

a radio frequency unit operably coupled to the directional antenna; and

a processor operably coupled to the radio frequency unit, wherein the processor operates to execute;

a plurality of instructions that cause the wireless terminal to receive capability data carried by at least some of a plurality of beacons transmitted by a corresponding plurality of Wireless Access Points (WAPs) of the WLAN, wherein the capability data indicates whether a corresponding access point is capable of transmit power control;

a plurality of instructions that cause the wireless terminal to processing the received capability data to select a desired WAP of the plurality of WAPs;

a plurality of instructions that cause the wireless terminal to associate with the desired WAP of the plurality of WAPs; and

a plurality of instructions that cause the wireless terminal to adjust a gain vector of the directional antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.

5. The wireless terminal of claim 4, wherein the directional antenna comprises:

a single antenna having a plurality of antenna elements; and

a directional antenna controller operably coupled to the single antenna and to the radio frequency unit.

6. The wireless terminal of claim 4, wherein the directional antenna comprises:

a plurality of antennas; and

a directional antenna controller operably coupled to the plurality of antennas and to the radio frequency unit.

7. A wireless terminal comprising:

means for receiving capability data carried by at least some of a plurality of beacons transmitted by a corresponding plurality of wireless access points (WAPs) wherein the capability data indicates whether a corresponding wireless access point (WAP) is capable of directional antenna servicing;

means for processing received capability data to select a desired WAP of the plurality of WAPs;

means for associating with the desired WAP of the plurality of WAPs; and

means for adjusting a gain vector of a servicing antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.

8. A wireless terminal comprising:

means for receiving capability data carried by at least some of a plurality of beacons transmitted by a corresponding plurality of wireless access points (WAPs) wherein the capability data indicates whether a corresponding wireless access point (WAP) is capable of transmit power control;

means for processing received capability data to select a desired WAP of the plurality of WAPs;

means for associating with the desired WAP of the plurality of WAPs; and

means for adjusting a gain vector of a servicing antenna of the wireless terminal so that it is substantially directed toward the desired WAP of the plurality of WAPs.