| 摘要 |
PROBLEM TO BE SOLVED: To enhance operation of STAs in multiple mode deployment in the same coverage area.SOLUTION: A method and system applies MAC transmission opportunity (TXOP) protection for multiple mode operation in a WLAN system. In particular, MAC mechanisms are defined to support multiple mode CTS frames, and multiple mode CF-End frames sent by an AP, each in a format appropriate for the corresponding mode which may also apply to a single mode as a trivial case. The MAC mechanisms permit truncation of TXOP duration for releasing the unused portion of the TXOP when no further data for transmission is available. Release of unused protected TXOP is possible for both protected AP transmissions and STA transmissions. |
