# US 2019/0174440 A1 · Method and device for channel transmission in wireless cellular communication system

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- Number: US 2019/0174440 A1
- Document ID: US20190174440A1
- Status: Published application
- Kind: A1
- Application number: 16/324,024
- Filed: 2017-08-09
- Published: 2019-06-06
- Earliest claimed: 2016-08-09
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Youngwoo KWAK; Sungjin PARK; Cheolkyu SHIN; Donghan KIM; Younsun KIM; Hoondong NOH; Jeongho YEO; Jinyoung OH; Juho LEE; Seunghoon CHOI; Heedon GHA; Youngbum KIM; Taehyoung KIM
- Web page: https://patentgrep.com/patent/US20190174440A1

## CPC

- H04W 56/001: {Synchronization between nodes}
- H04J 11/0073: {Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group}
- H04J 11/0076: {Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group}
- H04L 25/00: Baseband systems
- H04L 25/0202: {Channel estimation}
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 52/0245: {according to signal strength}
- H04W 56/0015: {one node acting as a reference for the others}
- H04W 72/30: Resource management for broadcast services
- H04B 7/00: Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence)
- H04J 13/00: Code division multiplex systems (for frequency hopping H04B1/713)
- H04L 5/0023: {Time-frequency-space}
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 48/10: using broadcasted information
- H04W 88/02: Terminal devices
- H04W 88/08: Access point devices
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- 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)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention presents a method for efficiently estimating a physical channel and, according to the present invention, a terminal of a communication system receives a synchronization signal from a base station, receives a broadcast channel from the base station, and can estimate the broadcast channel on the basis of the synchronization signal.

## Claims

### Claim 1

A method of a base station in a communication system, comprising:
transmitting a synchronization signal to a terminal; and
transmitting a broadcast channel to the terminal,
wherein channel estimation based on the synchronization signal is performed on the broadcast channel.

### Claim 2 (depends on 1)

The method of claim 1, wherein the synchronization signal is at least one of a primary synchronization signal and a secondary synchronization signal.

### Claim 3 (depends on 1)

The method of claim 1, wherein antenna ports of the synchronization signal and the broadcast channel are identical.

### Claim 4

A method of a terminal in a communication system, comprising:
receiving a synchronization signal from a base station;
receiving a broadcast channel from the base station; and
performing channel estimation on the broadcast channel based on the synchronization signal.

### Claim 5 (depends on 4)

The method of claim 4, wherein, wherein the synchronization signal is at least one of a primary synchronization signal and a secondary synchronization signal.

### Claim 6 (depends on 4)

The method of claim 4, wherein antenna ports of the synchronization signal and the broadcast channel are identical.

### Claim 7

A base station of a communication system, comprising:
a transceiver unit configured to transmit and receive signals; and
a controller configured to control the transceiver unit to transmit a synchronization signal to a terminal and to transmit a broadcast channel to the terminal,
wherein channel estimation based on the synchronization signal is performed on the broadcast channel.

### Claim 8 (depends on 7)

The base station of claim 7, wherein the synchronization signal is at least one of a primary synchronization signal and a secondary synchronization signal.

### Claim 9 (depends on 7)

The base station of claim 7, wherein antenna ports of the synchronization signal and the broadcast channel are identical.

### Claim 10

A terminal of a communication system, comprising:
a transceiver unit configured to transmit and receive signals; and
a controller configured to control the transceiver unit to receive a synchronization signal from a base station and receive a broadcast channel from the base station and to control channel estimation to be performed on the broadcast channel based on the synchronization signal.

### Claim 11 (depends on 10)

The terminal of claim 10, wherein the synchronization signal is at least one of a primary synchronization signal and a secondary synchronization signal.

### Claim 12 (depends on 10)

The terminal of claim 10, wherein antenna ports of the synchronization signal and the broadcast channel are identical.