Telecommunications apparatus and methods

    公开(公告)号:US11523392B2

    公开(公告)日:2022-12-06

    申请号:US16969990

    申请日:2019-02-14

    IPC分类号: H04W72/04 H04W74/08

    摘要: A method of operating a terminal device to communicate with a network infrastructure equipment in a wireless telecommunications system using radio resources comprising a narrowband carrier supported within a wider system frequency bandwidth of the wireless telecommunications system, wherein the method comprises: establishing initial frequencies for radio resources comprising the narrowband carrier; receiving configuration signalling from the network infrastructure equipment providing an indication of a frequency shift to apply to the initial frequencies for the radio resources comprising the narrowband carrier; establishing shifted frequencies for the radio resources comprising the narrowband carrier by applying the indicated frequency shift to the initial frequencies; and communicating with the network infrastructure equipment using the radio resources for the narrowband carrier with the shifted frequencies.

    Frequency error estimation during split repetitive uplink message transmission

    公开(公告)号:US10708875B2

    公开(公告)日:2020-07-07

    申请号:US16085062

    申请日:2016-04-01

    摘要: 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).