Patent ID: 8948284
Filing Date: 2015-02-03
Classification: H04L

Abstract:
1. A method of transmitting training fields for wireless local area network, the method comprising: determining a short training field (STF) sequence and a number of at least one first orthogonal frequency division multiplexing (OFDM) symbol for the STF sequence based on a size of a channel bandwidth in a sub 1 GHz frequency band; determining a long training field (LTF) sequence and a number of at least one second OFDM symbol for the LTF sequence based on the size of the channel bandwidth in the sub 1 GHz frequency band; transmitting the STF sequence on the at least one first OFDM symbol; and transmitting the LTF sequence on the at least one second OFDM symbol, wherein the size of the channel bandwidth is 1 MHz, 2 MHz, 4 MHz, 8 MHz, 16 MHz or 8+8 MHz in the sub 1 GHz frequency band, and wherein the at least one first OFDM symbol and the at least one second OFDM symbol are 1/10 down-clocked OFDM symbols having a duration of 40 micro-second.