# US 2019/0173628 A1 · Method for transceiving broadcast channel signals in a wireless communication system and apparatus thereof

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- Number: US 2019/0173628 A1
- Document ID: US20190173628A1
- Status: Published application
- Kind: A1
- Application number: 16/064,990
- Filed: 2017-05-26
- Published: 2019-06-06
- Earliest claimed: 2016-08-10
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Hyunsoo KO; Kijun KIM; Eunsun KIM; Suckchel YANG
- Web page: https://patentgrep.com/patent/US20190173628A1

## CPC

- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04J 3/00: Time-division multiplex systems (H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q)
- H04J 4/00: Combined time-division and frequency-division multiplex systems (H04J13/00 takes precedence {; data transmission H04L5/26; telemetry G08C15/00})
- H04J 11/00: Orthogonal multiplex systems, {e.g. using WALSH codes}(H04J13/00 takes precedence)
- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04L 5/0003: {Two-dimensional division}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04L 27/22: Demodulator circuits; Receiver circuits
- H04W 8/005: {Discovery of network devices, e.g. terminals}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 56/001: {Synchronization between nodes}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

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.

## Claims

### Claim 1

A method for a transmitting side device to transmit a signal in a wireless communication system, the method comprising:
configuring a multiplexed block by multiplexing a PSS (primary synchronization signal), an SSS (secondary synchronization signal), and a PBCH (physical broadcast channel) signal in time frequency domain,
wherein, when the PBCH signal is 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 comparing to a bandwidth for transmitting the PSS and the SSS, and
wherein, when the PBCH signal is multiplexed with the SSS in a FDM (Frequency Divisional Multiplexing) scheme on a same OFDM symbol, the PBCH signal is transmitted through frequency bands of both ends adjacent to a frequency position at which the SSS is transmitted; and
transmitting the multiplexed block to a receiving side device.

### Claim 2 (depends on 1)

The method of claim 1, wherein, for each OFDM symbol on which the PBCH is transmitted, subcarriers are allocated for transmitting multiple DMRSs (Demodulation Reference Signals).

### Claim 3 (depends on 1)

The method of claim 1, wherein the PSS and the SSS have a same bandwidth.

### Claim 4 (depends on 3)

The method of claim 3, wherein the PBCH signal is transmitted through multiple OFDM symbols.

### Claim at position 5

5-6. (canceled)

### Claim 7 (depends on 3)

The method of claim 3, wherein a subcarrier spacing of the PBCH signal is identical to a subcarrier spacing of the SSS.

### Claim 8 (depends on 1)

The method of claim 1, wherein transmitting the multiplexed block comprises:
transmitting the multiplexed block through multiple different beams within a given time duration.

### Claim 9 (depends on 8)

The method of claim 8, wherein the given time duration is repeatedly configured.

### Claim 10

A signal transmission device in a wireless communication system, the device comprising:
a processor configured to set a multiplexed block by multiplexing a PSS (primary synchronization signal), an SSS (secondary synchronization signal), and a PBCH (physical broadcast channel) signal in time frequency domain,
wherein, when the PBCH signal is multiplexed with the PSS and the SSS in a TDM (Time Divisional Multiplexing) scheme on different OFDM symbols, the processor controls the PBCH signal to be transmitted through wider bandwidth comparing to a bandwidth for transmitting the PSS and the SSS, and
wherein, when the PBCH signal is multiplexed with the SSS in a FDM (Frequency Divisional Multiplexing) scheme on a same OFDM symbol, the processor controls the PBCH signal to be transmitted through frequency bands of both ends adjacent to a frequency position at which the SSS is transmitted; and
a transceiver configured to transmit the multiplexed block to a receiving side device.

### Claim 11 (depends on 10)

The device of claim 10, wherein, for each OFDM symbol on which the PBCH is transmitted, subcarriers are allocated for transmitting multiple DMRSs (Demodulation Reference Signals).

### Claim 12 (depends on 10)

The device of claim 10, wherein the processor configures the PSS and the SSS to have a same bandwidth.

### Claim 13 (depends on 12)

The device of claim 12, wherein the processor is configured to control the transceiver to transmit the PBCH signal via a plurality of OFDM symbols.

### Claim at position 13

14-15. (canceled)

### Claim 16 (depends on 12)

The device of claim 12, wherein a subcarrier spacing of the PBCH signal is same as a subcarrier spacing of the SSS.

### Claim 17 (depends on 10)

The device of claim 10, wherein the processor controls the transceiver to transmit the multiplexed block through multiple different beams within a given time duration.