公开(公告)号：US10652857B2

公开(公告)日：2020-05-12

申请号：US16258669

申请日：2019-01-28

Applicant: CONVIDA WIRELESS, LLC

Inventor： Yuichi Morioka ,  Steven John Barrett ,  Phil Young ,  Martin Beale

IPC: H04W72/00 ,  H04W4/06 ,  H04L1/18 ,  H04L5/00

Abstract: A method of communicating data between a base station and a plurality of terminal devices in a wireless telecommunications system. The method comprises transmitting data from the base station to the plurality of terminal devices in a multicast transmission and transmitting response signals from the terminal devices to the base station to indicate whether the respective terminal devices have successfully received the multicast transmission. The use of a multicast transmission provides an efficient mechanism for communicating the same data to a plurality of terminal device, for example as might be desired in a machine-type communication network. In combination with this, the use of individual response signals, such as ACK/NACK signalling, from the terminal devices allows the base station, or other entity, such as a machine-type communications server, to track which terminal devices have indicated successful receipt of the multicast transmission, and to instigate an appropriate re-transmission protocol accordingly.