Method for transmitting frame and method for detecting transmission mode
AssigneeNewracom, Inc.
InventorsILGU LEE, Jeongchul SHIN, Kyeongpyo KIM, Jongee OH, Dae Kyun LEE
Life of this patent
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Abstract
In a WLAN, a device generates a short training field and a long training field following the short training field. The device generates a first signal field following the long training field, and the first signal field includes a mode field for indicating a transmission mode of a frame to be transmitted and a check bit for protecting at least the mode field. The device transmits the frame including the short training field, the long training field, and the first signal field.
Claims24
A method of transmitting a frame by a device in a wireless local area network (WLAN), the method comprising:
- generating a short training field;
- generating a long training field following the short training field;
- generating a first signal field following the long training field, the first signal field including a mode field for indicating a transmission mode of a frame to be transmitted and a check bit for protecting at least the mode field;
- and
- transmitting the frame including the short training field, the long training field, and the first signal field.
A method of transmitting a frame by a device in a wireless local area network (WLAN), the method comprising:
- modulating a first signal field using binary phase shift keying (BPSK) modulation, the first signal field being compatible with a previous version WLAN;
- modulating a first symbol following the first signal field and a second symbol following the first symbol using the BPSK modulation;
- modulating a third symbol following the second symbol using quadrature binary phase shift keying (QBPSK) modulation;
- and
- transmitting a frame including the first signal field, the first symbol, the second symbol, and the third symbol.
A method of detecting a transmission mode by a device in a wireless local area network (WLAN), the method comprising:
- receiving a frame including a short training field, a long training field following the short training field, and a first signal field following the long training field, the first signal field including a mode field for indicating a transmission mode and a check bit for protecting at least the mode field;
- detecting the mode field by decoding the first signal field;
- and
- determining a transmission mode of the frame based on the mode field when a check of the check bit passes.
A method of detecting a transmission mode by a device in a wireless local area network (WLAN), the method comprising:
- receiving a frame including a first signal field being compatible with a previous version WLAN, a first symbol following the first signal field, a second symbol following the first symbol, and a third symbol following the second symbol;
- determining a transmission mode of the frame based on modulation schemes of the first symbol, the second symbol, and the third symbol.
Dependencies are inferred from the claim text.