Methods and apparatus for selective contention in a mixed wireless communication system

An apparatus configured to communicate over a wireless medium, comprising:

• a processor configured to:
• generate a first communication reserving access to the wireless medium during a first time period;
• generate a second communication selectively allowing one or more wireless devices to access the wireless medium, regardless of a reservation specified by the first communication, during a second time period;
• and
• generate, for transmission after the second time period, a third communication reserving access to the wireless medium during a third time period;
• and
• a transmitter configured to transmit the first, second, and third communications.

An apparatus for communication over a wireless medium, comprising:

• means for transmitting a first communication reserving access to the wireless medium during a first time period;
• and
• means for transmitting a second communication selectively allowing one or more wireless devices to access the wireless medium, regardless of a reservation specified by the first communication, during a second time period;
• and
• means for transmitting, after the second time period, a third communication reserving access to the wireless medium during a third time period.

A non-transitory computer-readable medium comprising code that, when executed, causes an apparatus to:

• transmit a first communication reserving access to the wireless medium during a first time period;
• and
• transmit a second communication selectively allowing one or more wireless devices to access the wireless medium, regardless of a reservation specified by the first communication, during a second time period;
• and
• transmit, after the second time period, a third communication reserving access to the wireless medium during a third time period.