Method for transceiving broadcast channel signals in a wireless communication system and apparatus thereof
A method for a transmission-side device to transmit a signal in a wireless communication system is disclosed. To this end, the transmission-side device forms a multiplexed block by multiplexing a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a physical broadcast channel (PBCH) signal in time and frequency domains, wherein the PSS and the SSS form a synchronization signal (SS) by being multiplexed by the time-division multiplexing (TDM) method, and the SS and PBCH signals form the multiplexed block by being multiplexed by the TDM or frequency-division multiplexing (FDM) method.
1. A method for a transmitting side device to transmit a signal in a wireless communication system, the method comprising:
configuring multiple multiplexed blocks by multiplexing a PSS (primary synchronization signal), an SSS (secondary synchronization signal), a PBCH (physical broadcast channel) signal, and a DMRS (Demodulation Reference Signal) for the PBCH signal in a time frequency domain for each of the multiple multiplexed blocks,
wherein, based on the PBCH signal being multiplexed with the PSS and the SSS in a TDM (Time Divisional Multiplexing) scheme on different OFDM symbols, the PBCH signal is transmitted through wider bandwidth compared to a bandwidth for transmitting the PSS and the SSS,
wherein, based on the PBCH signal being multiplexed with the SSS in a FDM (Frequency Divisional Multiplexing) scheme on a same OFDM symbol, the PBCH signal is transmitted through frequency bands at both ends and not overlapping with a frequency position at which the SSS is transmitted while the PSS and the SSS are multiplexed in the TDM scheme, and
wherein the DMRS is multiplexed within a time frequency domain for transmitting the PBCH signal;
transmitting the multiple multiplexed blocks through a beam-sweeping operation,
wherein a first subcarrier spacing of the PBCH signal is identical to a second subcarrier spacing of the SSS, and
wherein a third subcarrier spacing of the PSS is wider than the second subcarrier spacing.
2. The method of claim 1 , wherein the PSS and the SSS have a same bandwidth.
3. The method of claim 2 , wherein the PBCH signal is transmitted through multiple OFDM symbols.
4. The method of claim 1 , wherein a given time duration for transmitting the multiple multiplexed blocks is repeatedly configured.
5. A signal transmission device in a wireless communication system, the device comprising:
a transceiver; and
a processor, operatively connected to the transceiver,
wherein the processor is configured to set multiple multiplexed blocks by multiplexing a PSS (primary synchronization signal), an SSS (secondary synchronization signal), a PBCH (physical broadcast channel) signal, and a DMRS (Demodulation Reference Signal) for the PBCH signal in a time frequency domain for each of the multiple multiplexed blocks,
wherein, based on the processor multiplexing the PBCH signal with the PSS and the SSS in a TDM (Time Divisional Multiplexing) scheme on different OFDM symbols, the processor controls the transceiver to transmit the PBCH signal through wider bandwidth compared to a bandwidth for transmitting the PSS and the SSS, and
wherein, based on the processor multiplexing the PBCH signal with the SSS in a FDM (Frequency Divisional Multiplexing) scheme on a same OFDM symbol, the processor controls the transceiver to transmit the PBCH signal through frequency bands at both ends and not overlapping with a frequency position at which the SSS is transmitted while the processor multiplexes the PSS and the SSS in the TDM scheme,
wherein the processor multiplexes the DMRS within a time frequency domain for transmitting the PBCH;
wherein the processor further controls the transceiver to transmit the multiple multiplexed blocks through a beam-sweeping operation,
wherein a first subcarrier spacing of the PBCH signal is same as a second subcarrier spacing of the SSS, and
wherein a third subcarrier spacing of the PSS is wider than the second subcarrier spacing.
6. The device of claim 5 , wherein the processor configures the PSS and the SSS to have a same bandwidth.
7. The device of claim 6 , wherein the processor is configured to control the transceiver to transmit the PBCH signal via a plurality of OFDM symbols.