Method and apparatus for adaptation of EDCA parameters to ensure access by a wireless node
Various aspects of the disclosed approach attempts to provide suitable contention access by an Access Point (AP) to a communications medium shared with a plurality of stations (STAs) by adapting Enhanced Distributed Channel Access (EDCA) parameters for the AP. Generally, the disclosed approach includes determining a metric value by measuring an amount of access of a medium by a device over a first period of time; and changing, based on the metric value, a contention parameter of the device if a target metric value associated with access of the medium for the device is not achieved while a limit of the contention parameter has not been reached.
1. An apparatus for wireless communication comprising:
a processing system configured to:
determine a metric value by measuring, over a first period of time, an amount of access by the apparatus of a medium that supports a plurality of communication links, wherein the amount of access by the apparatus is communication by the apparatus on a multiple of the plurality of communication links simultaneously; and
change, based on the metric value, a contention parameter for access to the medium by the apparatus if a target metric value associated with access of the medium by the apparatus to communicate on the multiple of the plurality of communication links simultaneously is not achieved while a limit of the contention parameter has not been reached, wherein the change of the contention parameter comprises:
choosing the limit of the contention parameter from a range of potential limits.
2. The apparatus of claim 1 , wherein the contention parameter is associated with contention access by the apparatus of a medium shared with other devices.
3. The apparatus of claim 1 , wherein the metric value comprises an air time value.
4. The apparatus of claim 1 , wherein the metric value comprises a throughput value.
5. The apparatus of claim 1 , wherein the processing system is further configured to change the amount of access of the medium by setting the limit of the contention parameter that is used by the apparatus to another value in the range of potential limits based on a comparison of the metric value to the target metric value.
6. The apparatus of claim 1 , wherein the processing system is further configured to:
change, based on the metric value, a second contention parameter for access to the medium if the target metric value associated with access of the medium is not achieved while a limit of the second contention parameter has not been reached.
7. The apparatus of claim 1 , wherein the change of the contention parameter comprises changing the contention parameter based on a step size.
8. The apparatus of claim 1 , wherein the processing system is further configured to determine the target metric value over a second period of time.
9. The apparatus of claim 8 , wherein the determination of the target metric value is based on a percentage of the second period of time.
10. The apparatus of claim 1 , wherein the target metric value is not achieved if the metric value is not within a range of the target metric value.
11. The apparatus of claim 1 , wherein the contention parameter comprises at least one of a minimum contention window size, a maximum contention window size, an arbitration inter-frame space number, or a transmission opportunity period.
12. A method for wireless communication comprising:
determining a metric value by measuring, over a first period of time, an amount of access of a medium that supports a plurality of communication links by a device that communicates on a multiple of the plurality of communication links simultaneously; and
changing, based on the metric value, a contention parameter for access to the medium by the device to communicate on the multiple of the plurality of communication links simultaneously if a target metric value associated with access of the medium is not achieved while a limit of the contention parameter has not been reached, wherein the changing of the contention parameter comprises:
choosing the limit of the contention parameter from a range of potential limits.
13. The method of claim 12 , wherein the metric value comprises an air time value.
14. The method of claim 12 , wherein the metric value comprises a throughput value.
15. The method of claim 12 , further comprising changing the amount of access of the medium by setting the limit of the contention parameter that is used by the device to another value in the range of potential limits based on a comparison of the metric value to the target metric value.
16. The method of claim 12 , further comprising:
changing, based on the metric value, a second contention parameter for access to the medium if the target metric value associated with access of the medium is not achieved while a limit of the second contention parameter has not been reached.
17. The method of claim 12 , further comprising determining the target metric value over a second period of time.
18. The method of claim 17 , wherein the determination of the target metric value is based on a percentage of the second period of time.
19. The method of claim 12 , wherein the target metric value is not achieved if the metric value is not within a range of the target metric value.
20. A wireless node comprising:
a transceiver configured to communicate over a medium that supports a plurality of communication links; and
a processing system coupled to the transceiver, the processing system configured to:
determine a metric value associated with access of the medium by the transceiver by measuring an amount of access of the medium by the transceiver to communicate on a multiple of the plurality of communication links simultaneously over a first period of time; and
change, based on the metric value, a contention parameter for access to the medium if a target metric value associated with access of the medium by the transceiver to communicate on the plurality of communication links simultaneously is not achieved while a limit of the contention parameter has not been reached, wherein the change of the contention parameter comprises:
choosing the limit of the contention parameter from a range of potential limits.