Reduced power auto-configuration

• US 7,359,363 B2
• Filed: 01/30/2005
• Issued: 04/15/2008
• Est. Priority Date: 01/30/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Sakai, Tsutomu
• Primary Examiner(s): LE, DANH C
• Application Number:
  US11/046,626
• Publication Number:
  US 20060187865A1
• Time in Patent Office: 1,171 Days
• Field of Search: 370/338, 370/328, 370/252, 455/522, 455/69
• US Class Current: 370/338
• CPC Class Codes: H04W 12/037 of the control plane, e.g. signalling traffic
• CPC Class Codes: H04W 52/28 using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 8/245 from a network towards a terminal

Abstract

An auto-configuration algorithm for establishing a wireless connection between an access point (AP) and a wireless station includes reducing the power that the AP transmits or broadcasts configuration setting information, resulting in possible reception of the configuration setting only within a small area of the network.

Claims

1. A method of communication in a wireless network including a wireless station and an access point (AP), the method comprising:

initiating configuration between the wireless station and the AP;

transmitting, by the AP, configuration settings at a reduced RF power from the default maximum RF power of the AP;

determining if a connection is established after the transmitting;

increasing the previous reduced RF power;

transmitting, by the AP, configuration settings at the increased RF power;

establishing a connection between the wireless station and the AP; and

increasing the RF power of the AP for communication between the wireless station and the AP.

2. The method of claim 1, further comprising encrypting, by the AP, the configuration settings before transmitting at the reduced power.

3. The method of claim 2, further comprising decrypting, by the wireless station, the transmitted configuration settings.

4. The method of claim 1, wherein the reduced RF power is dependent on the distance of the wireless station to the AP.

5. The method of claim 1, further comprising repeating the determining, increasing the previous reduced RF power, and transmitting at the increased RF power until a connection is established or a threshold is reached.

6. The method of claim 5, wherein the threshold is selected from the group consisting of maximum number of tries, maximum RF power, and maximum time spent in establishing a connection.

7. The method of claim 1, wherein the network is an 802.11 network.

8. The method of claim 1, wherein the configuration is art auto-configuration algorithm.

9. An access point (AP) in a wireless network comprising a wireless station, the AP comprising:

an antenna adapted to receive packets from and transmit packets to the wireless station, wherein the packets contain configuration setting information;

a processor coupled to the antenna for processing the packets received from the wireless station, wherein the processor determines a reduced power to transmit the packets; and

a transmitter adapted to transmit configuration setting information at the reduced power, wherein the processor is adapted to determine if a connection is established after transmitting at the reduced power and increases the previous reduced RF power, and wherein the transmitter is adapted to transmit configuration settings at the increased RF power and increase RF power for communication between the AP and the wireless station.

10. The AP of claim 9, wherein the processor is adapted to increase the reduced power until a connection is established between the AP and wireless station or when a threshold is reached.

11. The AP of claim 9, wherein the processor is adapted to encrypt the configuration setting information prior to transmitting the information.