Patent ID: 9622202
Date: 2017-04-11
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting a synchronization signal by a Base Station (BS) in a wireless access system supporting a high frequency band, the method comprising: transmitting a message including a repetitive sequence bitmap indicating a position at which a repetitive synchronization signal is transmitted and a repetition factor; generating a general synchronization signal without a repetitive characteristic; generating a repetitive synchronization signal based on the repetition factor used for estimating a Carrier Frequency Offset (CFO) of the high frequency band; transmitting the general synchronization signal in a first frame; and transmitting the repetitive synchronization signal only in the specific frame indicated by the repetitive sequence bitmap, wherein the repetition factor represents a repetitive characteristic of the repetitive synchronization signal, wherein the repetitive sequence bitmap indicates positions of the first and second frames, and wherein the general synchronization signal is used for estimating a decimal-multiple CFO of the CFO and the repetitive synchronization signal is used for estimating an integer-multiple CFO of the CFO.