Handover method and device and computer storage medium

A handover (HO) device, comprising:

• a processor, a memory configured to store data and a transceiver configured for a communication function, wherein
• the processor is configured to determine, according to first information or a received first message, to keep, during a process of a handover of a User Equipment (UE) from a first Radio Access Network (RAN) to a second RAN, a connection between the first (RAN and a first Core Network (CN);
• and
• the transceiver is configured to receive data of the UE forwarded by a second RAN element, and send the data to a first CN element,
• wherein the processor is specifically configured to:
• send a second HO request message, the second HO request message containing instruction information for instructing the connection between the first RAN and the first CN to be kept during the process of the handover of the UE from the first RAN to the second RAN, such that the second CN confirms the second HO request message and feeds back a HO request acknowledgment message, and determine, based on the HO request acknowledgment message, to keep, during the process of the handover of the UE from the first RAN to the second RAN, the connection between the first RAN and the first CN.

A non-transitory computer storage medium, in which computer-executable instructions are stored, the computer-executable instructions being executed by a processor to implement the following operations:

• determining, according to first information or a received first message, to keep, during a process of a handover of a User Equipment (UE) from a first Radio Access Network (RAN) element to a second RAN, a connection between the first RAN and a first Core Network (CN);
• and
• receiving data of the UE forwarded by a second RAN element, and sending the data to a first CN element,
• wherein determining, by the first RAN element according to the received first message, to keep, during the process of the handover of the UE from the first RAN to the second RAN, the connection between the first RAN and the first CN comprises:
• sending, by the first RAN element, a second HO request message, the second HO request message containing instruction information for instructing the connection between the first RAN and the first CN to be kept during the process of the handover of the UE from the first RAN to the second RAN, such that the second CN confirms the second HO request message and feeds back a HO request acknowledgment message;
• and
• determining, by the first RAN element, based on the HO request acknowledgment message, to keep, during the process of the handover of the UE from the first RAN to the second RAN, the connection between the first RAN and the first CN.