Transmission Method, Base Station, and Terminal

A transmission method, comprising:

• receiving, by a terminal, a handover command sent by a source base station;
• based on the handover command, triggering, by the terminal, a process of handing over from the source base station to a target base station, and maintaining user data transmission with the source base station;
• and
• in the handover process, when maintaining of the user data transmission between the source base station and the terminal is stopped, receiving, by the terminal, a first status report sent by the source base station, wherein the first status report indicates, to the terminal, a status of receiving uplink data of the terminal by the source base station.

A base station, comprising:

• a transmitter, configured to send a handover command to a terminal, wherein the handover command triggers a process of handing over the terminal from the base station to a target base station;
• and
• a processor configured to maintain user data transmission between the base station and the terminal;
• wherein the transmitter is further configured to:
• in the handover process, when maintaining of the user data transmission between the base station and the terminal is stopped, send a first status report to the terminal, wherein the first status report indicates, to the terminal, a status of receiving uplink data of the terminal by the base station.

A terminal, comprising:

• a receiver, configured to receive a handover command sent by a source base station;
• and
• a processor, configured to:
• based on the handover command, trigger a process of handing over from the source base station to a target base station, and maintain user data transmission with the source base station;
• wherein the receiver is further configured to:
• in the handover process, when maintaining of the user data transmission between the source base station and the terminal is stopped, receive a first status report sent by the source base station, wherein the first status report indicates, to the terminal, a status of receiving uplink data of the terminal by the source base station.