System and method for controlling network discovery

Patent metadata

Field	Value
Publication number	US-8958335-B2
Application number	US-201313875944-A
Country	US
Kind code	B2
Filing date	May 2, 2013
Priority date	May 4, 2012
Publication date	Feb 17, 2015
Grant date	Feb 17, 2015

Abstract

A method for discovering an access point of a communications system includes receiving an active scanning indicator, delaying transmission of a probe request of the station for a first amount of time in accordance with the active scanning indicator, and determining if the station is able to receive a matching probe request of a neighbor station during the first amount of time. The method also includes delaying transmission of the probe request for a second amount of time if the station is able to receive the matching probe request during the first amount of time, and determining if the station is able to receive a probe response corresponding to the matching probe request during the second amount of time. The method further includes transmitting the probe request if the station is not able to receive the probe response corresponding to the matching probe request during the second amount of time.

First claim

What is claimed is:

1. A method for discovering an access point of a communications system, the method comprises:
receiving, by a station, an active scanning indicator;
delaying, by the station, transmission of a probe request of the station for a first amount of time in accordance with the active scanning indicator;
determining, by the station, if the station is able to receive a matching probe request of a neighbor station during the first amount of time;
delaying, by the station, transmission of the probe request for a second amount of time if the station is able to receive the matching probe request during the first amount of time;
determining, by the station, if the station is able to receive a probe response corresponding to the matching probe request during the second amount of time; and
transmitting, by the station, the probe request if the station is not able to receive the probe response corresponding to the matching probe request during the second amount of time.

2. The method of claim 1 , further comprising transmitting the probe request if the station is not able to receive the matching probe request during the first amount of time.

3. The method of claim 1 , wherein the active scanning indicator indicates a level of active scanning activity, and wherein the method further comprises deriving the first amount of time from the active scanning indicator.

4. The method of claim 1 , wherein the active scanning indicator indicates a time value, and wherein the method further comprises setting the first amount of time to the time value.

5. The method of claim 1 , wherein the active scanning indicator indicates one of a plurality of time values.

6. The method of claim 1 , wherein the active scanning indicator is received from a first access point.

7. The method of claim 1 , wherein the probe request is transmitted to a second access point.

8. The method of claim 1 , wherein the probe response corresponding to the matching probe request is received from a third access point, and wherein the method further comprises associating with the third access point.

9. A station comprising:
a receiver configured to receive an active scanning indicator;
a processor operatively coupled to the receiver, the processor configured to delay transmission of a probe request of the station for a first amount of time in accordance with the active scanning indicator, to determine if the station is able to receive a matching probe request of a neighbor station during the first amount of time, to delay transmission of the probe request for a second amount of time if the station is able to receive the matching probe request during the first amount of time, and to determine if the station is able to receive a probe response corresponding to the matching probe request during the second amount of time; and
a transmitter operatively coupled to the processor, the transmitter configured to transmit the probe request if the station is not able to receive the probe response corresponding to the matching probe request during the second amount of time.

10. The station of claim 9 , wherein the transmitter is configured to transmit the probe request if the station is not able to receive the matching probe request during the first amount of time.

11. The station of claim 9 , wherein the active scanning indicator indicates a level of active scanning activity, and wherein the processor is configured to derive the first amount of time from the active scanning indicator.

12. The station of claim 9 , wherein the active scanning indicator indicates a time value, and wherein the processor is configured to set the first amount of time to the time value.

13. The station of claim 9 , wherein the transmitter is configured to transmit the probe request to an access point.

Assignees

• Futurewei Technologies Inc

Inventors

• Yang Yunsong
• Kwon Young Hoon
• Rong Zhigang

Classifications

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title