Patent ID: 11949598
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method according to claim 1, wherein the step of confirming, by the network device, that the first data packet is accurately received by the at least one terminal device further comprises the following steps:
setting, by the network device, a first counter to 0 and activating, by the network device, a first timer after the network device sends the first data packet;
controlling, by the network device, the first counter to increase by 1 each time the network device receives acknowledgement (ACK) information for the first data packet; and
stopping the first timer and confirming that the first data packet is accurately received by the at least one terminal device if a value of the first counter is equal to a first threshold before the first timer expires;
wherein the method further comprises:
retransmitting, by the network device, the first data packet if the first timer expires;
the first threshold is equal to the number of members in a multicast group, or the first threshold is less than the number of members in the multicast group;
wherein at least one of the first counter, the first timer, and the first threshold is configured through the first MCCH.