This disclosure describes systems, methods, and devices related to enhanced frame exchange. A device may generate a first subset of a plurality of fields, wherein the first subset is mandatory in a probe request frame. The device may generate a second subset of the plurality of fields, wherein the second subset is optional in the probe request frame regardless of capability information of the device. The device may generate the probe request frame comprising the first subset and the second subset. The device may cause to send the probe request frame to an access point (AP) device.