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1. (WO2017157480) FREQUENCY ERROR ESTIMATION DURING SPLIT REPETITIVE UPLINK MESSAGE TRANSMISSION

Pub. No.:    WO/2017/157480    International Application No.:    PCT/EP2016/057270
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Sat Apr 02 01:59:59 CEST 2016
IPC: H04W 56/00
H04W 4/00
Applicants: SONY MOBILE COMMUNICATIONS INC.
SONY CORPORATION
SONY MOBILE COMMUNICATIONS AB
Inventors: ZANDER, Olof
PRIYANTO, Basuki
BEALE, Martin
WONG, Shin Horng
Title: FREQUENCY ERROR ESTIMATION DURING SPLIT REPETITIVE UPLINK MESSAGE TRANSMISSION
Abstract:
A half-duplex radio device (100) generates a repetitive transmission of an uplink message to a base station (150) of the cellular network. The radio device (100) splits the repetitive transmission of the uplink message into a sequence of multiple transmit periods and configures at least one measurement gap between the transmit periods. In the transmit periods, the radio device (100) sends the repetitive transmission to the base station. In the at least one measurement gap configured between the transmit periods, the radio device (100) temporarily switches to receiving at least one downlink signal from the base station (150). Based on the received at least one downlink signal, the radio device (100) estimates a frequency error of a reference frequency source of the radio device (100).