Limiting access to service providers based on the network traffic load of a wireless access point

1. A method for operating a wireless access point, the method-comprising:

identifying a group of service providers to provide access for respective subscriber devices to a network via the wireless access point, wherein the wireless access point is operating in a low-load mode;

periodically monitoring a network traffic load of the wireless access point;

determining that an amount of the network traffic load is above a threshold amount;

switching the wireless access point to a high-load mode responsive to the determining the amount of the network traffic load is above the threshold amount;

selecting a service provider from the group of service providers for impeding in response to the wireless access point switching to the high-load mode, wherein the service provider is selected based on a ranking of the selected service provider being below a rank of a non-selected service provider from the group of service providers; and

impeding use of the selected service provider from the wireless access point by an additional subscriber not connected to the wireless access point by transmitting a response frame excluding an identifier of the selected service provider in response to receiving a probe request from the additional subscriber device.

2. The method of claim 1 , wherein identifying the group of service providers includes identifying service providers that are part of a roaming consortium.

3. The method of claim 2 , wherein identifying the group of service providers includes ranking the service providers by prioritizing individual service providers over other service providers.

4. The method of claim 2 , wherein selecting a service provider from the group is based on an agreement specified for the roaming consortium.

5. The method of claim 1 , wherein periodically monitoring the network traffic load of the wireless access point includes monitoring a channel selected by the wireless access point for a duration, and wherein determining when the amount of the network traffic load is above the threshold amount includes determining how much of the channel is occupied during the duration.

6. The method of claim 1 , further comprising broadcasting a beacon frame in response to determining that the amount is above the threshold amount, wherein the beacon frame includes a set of identifiers that excludes an identifier for the selected service provider of the group of service providers.

7. The method of claim 1 , further comprising:

receiving a probe request from a first subscriber device that has not yet connected to the wireless access point; and

in response to determining that the amount is above the threshold amount, responding to the probe request by transmitting a response frame including a set of identifiers that excludes an identifier for the selected service provider of the group of service providers.

8. The method of claim 7 , wherein the probe request includes Generic Advertisement Service (GAS) based frame.

9. The method of claim 1 , wherein impeding use of the service provider includes impeding access to an identifier for the selected service provider.

10. The method of claim 9 , wherein impeding access to an identifier for the selected service provider includes hiding an identifier for the selected service provider from the additional subscriber device.

11. A wireless access point comprising:

a memory resource;

a network interface; and

a processor coupled to the memory resource and the network interface, the processor to:

identify a group of service providers to provide access for respective subscriber devices to a network via the wireless access point;

operate in a low-load mode by broadcasting a first set of identifiers, wherein each identifier in the first set of identifiers corresponds to a service provider of the group of service providers;

periodically monitoring a network traffic load of the wireless access point;

determine if an amount of a network traffic load is above a threshold amount; and

switching the wireless access point to a high-load mode responsive to the determining the amount of the network traffic load is above the threshold amount

selecting a service provider from the group of service providers for which subsequent access by subscriber devices is to be impeded in response to the wireless access point switching to the high-load mode, wherein the service provider is selected based on a ranking of the selected service provider being below a rank of a non-selected service provider from the group of service providers

broadcasting a second set of identifiers, wherein the second set of identifiers excludes an identifier for the selected provider and includes a plurality of identifiers corresponding to the non-selected service provider.

12. The wireless access point of claim 11 , wherein the service providers are part of a roaming consortium specifying which service providers have roaming agreements with each other.

13. The wireless access point of claim 12 , wherein the processor identifies the group of service providers by ranking the service providers by prioritizing individual service providers over other service providers.

14. The wireless access point of claim 11 , wherein the processor makes the determination when the amount of the network traffic load is above the threshold amount by:

monitoring a channel selected by the wireless access point for a duration; and

determining how much of the channel is occupied during the duration.

15. A non-transitory computer readable medium storing instructions executable by a processing resource to:

determine a first amount of a network traffic load of an access point operating in a first operating mode is above a first threshold network traffic load;

switch the access point from the low-load mode to a high-load mode in response to the determination that the amount of network traffic load is above the first threshold network traffic load;

determine that a second amount of network traffic load of the access point is above a second threshold network traffic load that is different than the first threshold network traffic load; and

switch the access point from the med-load mode to a high-load mode in response to the determination that the second amount of network traffic load of the access point is above the second threshold network traffic load and

impede use of a selected service provider by an additional subscriber not connected to the wireless access point by transmitting a response frame excluding an identifier of the selected service provider in response to receiving a probe request from the additional subscriber device.

16. The non-transitory computer readable medium of claim 15 , further comprising instructions to:

determine a first service provider to broadcast to a subscriber device not connected to the access point in response to the access point switch to the med-load mode; and

determine a second service provider to broadcast to a subscriber device not connected to the access point in response to the access point switch to the high-load mode.

17. The non-transitory computer readable medium of claim 15 , further comprising instructions to:

determine that the first amount of network traffic load of the access point is below the first threshold network traffic load; and

keep the access point in the low-load mode in response to the determination that the first amount of network traffic load of the access point is below the first threshold network traffic load.