Smart wireless station for identifying a preferred access point

• US 8,315,626 B2
• Filed: 09/16/2005
• Issued: 11/20/2012
• Est. Priority Date: 09/16/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Huotari, Allen J., Harrington, Kendra S.
• Primary Examiner(s): Mehrpour, Melody
• Assistant Examiner(s): STEPHEN, EMEM O
• Application Number:
  US11/229,099
• Publication Number:
  US 20070064634A1
• Time in Patent Office: 2,622 Days
• Field of Search: 455/434, 455/435.2, 455/464, 455/515, 455/179.1, 455/525, 455/150.1, 455/73, 4551601-1701, 370/338, 370/252, 370/328
• US Class Current: 455/435.2
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 Selecting an access point

Abstract

Systems and methods for connecting a wireless station to a wireless network are provided. The method may include: receiving a pre-connection management signal from each of a plurality of wireless access points, each of the access points connecting an upstream network to a downstream wireless network; retrieving from each of the management signals characteristics of the access point corresponding to the management signal, the characteristics of the access point comprising information regarding the upstream network associated with the respective access point; analyzing the characteristics of the access point for each of the management signals; and based on the analysis of the characteristics of the access points, identifying a preferred access point from the plurality of access points.

Claims

1. A method of connecting a wireless station to a wireless network, comprising:

prior to associating to a preferred access point from among a plurality of wireless access points, receiving a pre-connection management signal from each of the plurality of wireless access points, wherein;

each of the wireless access points connects an upstream network that is upstream of the access point to a downstream wireless network that is downstream of the access point, and

each of the pre-connection management signals conveys information regarding services available from the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

from each of the received pre-connection management signals, retrieving characteristics of the wireless access point corresponding to the pre-connection management signal, wherein;

the characteristics comprise information regarding an availability status of an internet connection of the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

for each wireless access point for which the characteristics have been retrieved, evaluating the characteristics of the wireless access point, wherein the evaluating includes;

comparing each of the characteristics of each wireless access point to a stored criticality rating for each characteristic;

comparing the wireless access points that have the characteristic with the highest criticality rating;

among the wireless access points that have the characteristic with the highest criticality rating, comparing those wireless access points that have the characteristic with the next lower criticality rating; and

continuing the previous comparing for each lower criticality rating; and

based on the evaluation of the characteristics of the wireless access points for which the characteristics have been retrieved, identifying the preferred access point from the plurality of wireless access points, wherein the preferred access point is among the wireless access points that have been compared from highest criticality rating to lowest criticality rating.

2. The method of claim 1, wherein:

the pre-connection management signal from each of the plurality of access points comprises a beacon signal.

3. The method of claim 1, further comprising:

transmitting a probe request signal;

wherein the pre-connection management signal from each of the plurality of access points comprises a probe response signal.

4. The method of claim 1, further comprising:

notifying a user if the characteristics of the access point retrieved from a management signal satisfy a predetermined network profile.

5. The method of claim 1, wherein said evaluating the characteristics of the access point derived from each of the management signals comprises:

defining a desired network profile;

for each of the management signals, comparing the characteristics of the access point to the desired network profile; and

identifying the access point most closely corresponding to the desired network profile.

6. The method of claim 5, further comprising:

indicating to a user a correspondence between each of the access points and the desired network profile.

7. The method of claim 1, wherein said evaluating the characteristics of the access point derived from each of the management signals comprises:

defining a plurality of profiles, each of the profiles corresponding to one or more desired network characteristics and having an associated rank;

for each of the management signals, comparing the characteristics of the access point to the desired network characteristics in the plurality of profiles; and

identifying the access point corresponding to the highest ranked profile.

8. The method of claim 1, further comprising:

detecting an additional management signal from an additional access point, said additional access point connecting an upstream network to a downstream wireless network;

retrieving from the additional management signal characteristics of the additional access point, said characteristics comprising information regarding the internet connection of the upstream network associated with the additional access point;

comparing the characteristics of the additional access point to the desired network characteristics in the plurality of profiles; and

if the additional access point corresponds to a profile having a higher rank than the previously identified access point, connecting to the downstream wireless network of the additional access point.

9. The method of claim 1, wherein:

the characteristics comprise one or more of the following;

a Service Set Identity (SSID), a channel number, a wireless signal strength, a wireless signal quality, encryption settings, an Internet Protocol (IP) address of the access point, a domain name of the access point, and availability of a Dynamic Host Configuration Protocol (DHCP) address for the wireless station.

10. A wireless station, comprising:

an interface for wireless connection with a wireless access point; and

control logic configured to;

prior to associating to a preferred access point from among a plurality of wireless access points, receive a pre-connection management signal from each of the plurality of wireless access points, wherein;

each of the wireless access points connects an upstream network that is upstream of the access point to a downstream wireless network that is downstream of the access point, and

each of the pre-connection management signals conveys information regarding services available from the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

from each of the received pre-connection management signals, retrieve characteristics of the wireless access point corresponding to the pre-connection management signal, wherein;

the characteristics comprise information regarding an availability status of an internet connection of the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

for each wireless access point for which the characteristics have been retrieved, evaluating the characteristics of the wireless access point, wherein the evaluating includes;

comparing each of the characteristics of each wireless access point to a stored criticality rating for each characteristic;

comparing the wireless access points that have the characteristic with the highest criticality rating;

among the wireless access points that have the characteristic with the highest criticality rating, comparing those wireless access points that have the characteristic with the next lower criticality rating; and

continuing the previous comparing for each lower criticality rating; and

based on the evaluation of the characteristics of the wireless access points for which the characteristics have been retrieved, identify the preferred access point from the plurality of wireless access points, wherein the preferred access point is among the wireless access points that have been compared from highest criticality rating to lowest criticality rating.

11. The wireless station of claim 10, wherein:

the pre-connection management signal from each of the plurality of access points comprises a beacon signal.

12. The wireless station of claim 10, wherein:

said control logic is configured to transmit a probe request signal; and

the pre-connection management signal from each of the plurality of access points comprises a probe response signal.

13. The wireless station of claim 10, wherein:

said control logic is configured to notify a user if the characteristics of the access point retrieved from a management signal satisfy a predetermined network profile.

14. The wireless station of claim 10, wherein:

said control logic is configured to evaluate the characteristics of the access point for each of the management signals by;

defining a desired network profile;

for each of the management signals, comparing the characteristics of the access point to the desired network profile; and

identifying the access point most closely corresponding to the desired network profile.

15. The wireless station of claim 14, wherein:

said control logic is configured to indicate to a user a correspondence between each of the access points and the desired network profile.

16. The wireless station of claim 10, wherein said control logic is configured to evaluate the characteristics of the access point for each of the management signals by:

defining a plurality of profiles, each of the profiles corresponding to one or more desired network characteristics and having an associated rank;

for each of the management signals, comparing the characteristics of the access point to the desired network characteristics in the plurality of profiles; and

identifying the access point corresponding to the highest ranked profile.

17. The wireless station of claim 10, wherein said control logic is further configured to:

detect an additional management signal from an additional access point, said additional access point connecting an upstream network to a downstream wireless network;

retrieve from the additional management signal characteristics of the additional access point, said characteristics comprising information regarding the internet connection of the upstream network associated with the additional access point;

compare the characteristics of the additional access point to the desired network characteristics in the plurality of profiles; and

if the additional access point corresponds to a profile having a higher rank than the previously identified access point, connect to the downstream wireless network of the additional access point.

18. The wireless station of claim 10, wherein:

the characteristics comprise one or more of the following;

a Service Set Identity (SSID), a channel number, a wireless signal strength, a wireless signal quality, encryption settings, an Internet Protocol (IP) address of the access point, a domain name of the access point, and availability of a Dynamic Host Configuration Protocol (DHCP) address for the wireless station.

19. A wireless station, comprising:

an interface for wireless connection with a wireless access point; and

means for receiving, prior to associating to a preferred access point from among a plurality of wireless access points, a pre-connection management signal from each of the plurality of wireless access points, wherein;

each of the wireless access points connects an upstream network upstream of the access point to a downstream wireless network downstream of the access point, and

each of the pre-connection management signals conveys information regarding services available from the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

means for retrieving characteristics, from each of the received pre-connection management signals, of the wireless access point corresponding to the pre-connection management signal, wherein;

the characteristics comprise information regarding an availability status of an internet connection of the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

means for evaluating the characteristics of the wireless access point for each wireless access point for which the characteristics have been retrieved, wherein the means for evaluating includes means for;

comparing each of the characteristics of each wireless access point to a stored criticality rating for each characteristic;

comparing the wireless access points that have the characteristic with the highest criticality rating;

among the wireless access points that have the characteristic with the highest criticality rating, comparing those wireless access points that have the characteristic with the next lower criticality rating; and

continuing the previous comparing for each lower criticality rating; and

means for identifying the preferred access point from the plurality of wireless access points based on the evaluation of the characteristics of the wireless access points for which the characteristics have been retrieved, wherein the preferred access point is among the wireless access points that have been compared from highest criticality to lowest criticality rating.

20. A method of connecting a wireless station to a wireless network, comprising:

prior to associating to a preferred access point from among a plurality of wireless access points, receiving a pre-connection management signal from each of the plurality of wireless access points, wherein;

each of the wireless access points connects an upstream network that is upstream of the access point to a downstream wireless network that is downstream of the access point, and

each of the pre-connection management signals conveys information regarding services available from the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

from each of the received pre-connection management signals, retrieving characteristics of the wireless access point corresponding to the pre-connection management signal, wherein;

the characteristics comprise information regarding an availability status of a DHCP support capability of the upstream network that connects to the wireless access point corresponding to the pre-connection management signal;

for each wireless access point for which the characteristics have been retrieved, evaluating the characteristics of the wireless access point, wherein the evaluating includes;

comparing each of the characteristics of each wireless access point to a stored criticality rating for each characteristic;

comparing the wireless access points that have the characteristic with the highest criticality rating;

among the wireless access points that have the characteristic with the highest criticality rating, comparing those wireless access points that have the characteristic with the next lower criticality rating; and

continuing the previous step for each lower criticality rating; and

based on the evaluation of the characteristics of the wireless access points for which the characteristics have been retrieved, identifying the preferred access point from the plurality of wireless access points, wherein the preferred access point is among the wireless access points that have been compared from highest criticality rating to lowest criticality rating.