Method and device for detecting preamble of wireless data frame

Details Method and device for detecting preamble of wireless data frame Method and device for detecting preamble of wireless data frame

2007-05-15

2007-05-15

Chan, Wing (Department: 2616)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S342000, C370S338000

Reexamination Certificate

active

10209489

ABSTRACT:
A method and a device for detecting a preamble type of a wireless data frame are provided. The preamble has a synchronization (SYNC) field and a start frame delimiter (SFD) field, and the method comprises following steps. The wireless data frame is first received, and then determined whether the wireless data frame has a short preamble. When the wireless data frame has the short preamble, the wireless data frame is transmitted to a MAC device. In addition, if the wireless data frame does not have the short preamble, it determines whether the wireless data frame has a long preamble. When the wireless data frame has the long preamble, the wireless data frame is then transmitted to the MAC device.

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