FIELD: communications.
SUBSTANCE: terminal receives the preset information from the network device, where the preset information at least contains transmission PTM information. The terminal feeds back the HARQ response data of the preset information to the network device, where the HARQ response data contains the HARQ response data of the transmission PTM information. It can be seen that in the present invention, there is a HARQ feedback mechanism when the terminal receives transmission PTM information.
EFFECT: ability of the network device to determine, when the service data of the multipoint transmission (PTM) is lost, whether it is necessary to retransmit according to the HARQ feedback information, which is beneficial for ensuring the reliability of the transmission of the service data.
21 cl, 9 dwg
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