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1. (WO2018202883) COMMUNICATIONS DEVICE, INFRASTRCUTURE EQUIPMENT AND METHODS

Pub. No.:    WO/2018/202883    International Application No.:    PCT/EP2018/061578
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 05 01:59:59 CEST 2018
IPC: H04L 5/00
H04B 7/00
Applicants: SONY CORPORATION
SONY EUROPE LIMITED
Inventors: ATUNGSIRI, Samuel Asangbeng
BEALE, Martin Warwick
WONG, Shin Horng
Title: COMMUNICATIONS DEVICE, INFRASTRCUTURE EQUIPMENT AND METHODS
Abstract:
In a wireless communications system an infrastructure equipment is configured to form a synchronisation signal block comprising one or more Orthogonal Frequency Division Multiplexed, OFDM, symbol carrying a synchronisation sequence and one or more other OFDM symbols carrying information of a physical broadcast channel of the wireless access interface. Each of the one or more OFDM symbols of the synchronisation block is formed by a plurality of frequency domain sub-carrier signals each being transmitted over the duration of the OFDM symbol in a resource element of the wireless access interface. Each OFDM symbol of the synchronisation signal block has the same sub-carrier spacing, and each of the one or more other OFDM symbols carrying information of a physical broadcast channel of the wireless access interface is arranged to include demodulation reference symbols. The infrastructure equipment is configured to transmit the synchronisation signal block to the one or more wireless communications devices for receiving the broadcast information provided by the physical broadcast channel. A wireless communications device operating with the wireless communications network is configured to generate an estimate of the channel transfer function for detecting the broadcast channel information using either or both the resource elements of the OFDM symbol carrying the synchronisation sequence in the synchronisation signal or by using the demodulation reference symbols received in the OFDM symbol carrying the physical broadcast channel information. Accordingly the information carried by the synchronisation block is more likely to be received correctly because of an improvement in the estimate of the channel transfer function or the same information can be carried with reduced resources.