Trigger MPDU for client-selectable transmit power

1. A method comprising:

generating, at a first communication device, a trigger medium access control protocol data unit (MPDU) configured to solicit a second communication device to transmit a trigger-based data unit to the first communication device, including setting a transmit power indication in the trigger MPDU that indicates that the second communication device is permitted to select a transmit power level of the trigger-based data unit that does not meet a power requirement of the first communication device for the trigger-based data unit; and

transmitting, from the first communication device, the trigger MPDU to the second communication device.

2. The method of claim 1 , wherein the transmit power indication indicates that a transmit power level of the trigger MPDU is an undefined value.

3. The method of claim 2 , wherein the transmit power indication is an access point transmit (AP TX) power subfield of the trigger MPDU that has a value corresponding to the undefined value.

4. The method of claim 1 , wherein the transmit power indication indicates that the transmit power level of the trigger-based data unit is independent of a target received signal strength indicator (RSSI) for the first communication device.

5. The method of claim 4 , wherein the transmit power indication is a target RSSI subfield of the trigger MPDU that has a value that indicates to the second communication device to transmit the trigger-based data unit at any transmit power level of the second communication device.

6. The method of claim 1 , wherein:

the trigger MPDU solicits the second communication device to transmit the trigger-based data unit via a wireless local area network (WLAN) interface; and

the transmit power indication indicates to the second communication device to select the transmit power level using a non-WLAN wireless interface parameter.

7. The method of claim 6 , wherein the non-WLAN parameter is a Bluetooth interface parameter.

8. The method of claim 6 , wherein the non-WLAN parameter is a Bluetooth interface transmission status.

9. The method of claim 1 , wherein the transmit power indication indicates that the transmit power level of the trigger-based data unit is to be selected by the second communication device without using a transmit power level of the trigger MPDU.

10. An apparatus, comprising:

a network interface device associated with a first communication device, wherein the network interface device includes one or more integrated circuits (ICs) configured to:

generate a trigger medium access control protocol data unit (MPDU) configured to solicit a second communication device to transmit a trigger-based data unit to the first communication device, including setting a transmit power indication in the trigger MPDU that indicates that the second communication device is permitted to select a transmit power level of the trigger-based data unit that does not meet a power requirement of the first communication device for the trigger-based data unit, and

transmit, from the first communication device, the trigger MPDU to the second communication device.

11. The apparatus of claim 10 , wherein the transmit power indication indicates that a transmit power level of the trigger MPDU is an undefined value.

12. The apparatus of claim 11 , wherein the transmit power indication is an access point transmit (AP TX) power subfield of the trigger MPDU that has a value corresponding to the undefined value.

13. The apparatus of claim 10 , wherein the transmit power indication indicates that the transmit power level of the trigger-based data unit is independent of a target received signal strength indicator (RSSI) for the first communication device.

14. The apparatus of claim 13 , wherein the transmit power indication is a target RSSI subfield of the trigger MPDU that has a value that indicates to the second communication device to transmit the trigger-based data unit at any transmit power level of the second communication device.

15. The apparatus of claim 10 , wherein:

the trigger MPDU solicits the second communication device to transmit the trigger-based data unit via a wireless local area network (WLAN) interface; and

the transmit power indication indicates to the second communication device to select the transmit power level using a non-WLAN wireless interface parameter.

16. The apparatus of claim 15 , wherein the non-WLAN parameter is a Bluetooth interface parameter.

17. The apparatus of claim 15 , wherein the non-WLAN parameter is a Bluetooth interface transmission status.

18. The apparatus of claim 10 , wherein the transmit power indication indicates that the transmit power level of the trigger-based data unit is to be selected by the second communication device without using a transmit power level of the trigger MPDU.

19. A method comprising:

receiving, at a wireless local area network (WLAN) interface of a first communication device and from a second communication device, a trigger medium access control protocol data unit (MPDU) configured to solicit the first communication device to transmit a trigger-based data unit to the second communication device, wherein the trigger MPDU includes a transmit power indication that indicates that the first communication device is permitted to select a transmit power level of the trigger-based data unit that does not meet a power requirement of the second communication device for the trigger-based data unit;

in response to the transmit power indication that indicates that the first communication device is permitted to select a transmit power level of the trigger-based data unit that does not meet a power requirement of the second communication device for the trigger-based data unit, determining the transmit power level of the trigger-based data unit using a parameter of a non-WLAN wireless interface of the first communication device;

generating, at the first communication device, the trigger-based data unit to be transmitted to the second communication device; and

transmitting, from the first communication device, the trigger-based data unit to the second communication device using the WLAN interface at the determined transmit power level.

20. The method of claim 19 , wherein the transmit power indication is included in one or more of an access point transmit power subfield of the trigger MPDU and a target received signal strength indicator subfield of the trigger MPDU.

21. The first communication device of claim 19 , wherein the one or more ICs are further configured to:

determine the transmit power level of the trigger-based data unit using the parameter of the non-WLAN wireless network interface device in response to the transmit power indication within one or more of an access point transmit power subfield of the trigger MPDU and a target received signal strength indicator subfield of the trigger MPDU.

22. A first communication device, comprising:

a wireless local area network (WLAN) interface device; and

a non-WLAN wireless network interface;

wherein the WLAN interface device comprises one or more integrated circuits (ICs) configured to:

receive, from a second communication device, a trigger medium access control protocol data unit (MPDU) configured to solicit the first communication device to transmit a trigger-based data unit to the second communication device, wherein the trigger MPDU includes a transmit power indication that indicates that the first communication device is permitted to select a transmit power level of the trigger-based data unit that does not meet a power requirement of the second communication device for the trigger-based data unit,

in response to the transmit power indication that indicates that the first communication device is permitted to select a transmit power level of the trigger-based data unit that does not meet a power requirement of the second communication device for the trigger-based data unit, determine the transmit power level of the trigger-based data unit using a parameter of the non-WLAN wireless network interface device,

generate the trigger-based data unit to be transmitted to the second communication device, and

transmit the trigger-based data unit to the second communication device at the determined transmit power level.