Method for handover between secondary base stations, network device, and user equipment

A method for handover between secondary base stations, wherein the method comprises:

• receiving, by user equipment UE, configuration information of each of at least one candidate secondary base station sent by a network device, wherein each of the at least one candidate secondary base station has made a path handover preparation and is waiting to be selected by the UE as a target secondary base station, and the path handover preparation comprises at least one of the following:
• preconfiguring an access resource for the UE or establishing a data transmission channel with the network device;
• and
• handing over, by the UE, to the target secondary base station in the at least one candidate secondary base station according to the configuration information of each of the at least one candidate secondary base station, wherein the configuration information of each of the at least one candidate secondary base station comprises at least one of the following:
• information about the access resource preconfigured by each candidate secondary base station for the UE or uplink grant information preconfigured by each candidate secondary base station for the UE.

A network device, comprising:

• at least one processor configured to:
• determine to send prior-preparation instruction information to each of at least one candidate secondary base station, wherein the prior-preparation instruction information is used to instruct each of the at least one candidate secondary base station to make a path handover preparation, and the path handover preparation comprises at least one of the following:
• preconfiguring an access resource for the UE or establishing a data transmission channel with the network device;
• and
• send the prior-preparation instruction information to each of the at least one candidate secondary base station;
• send configuration information of each of the at least one candidate secondary base station to the UE;
• and
• a memory coupled to the at least one processor, wherein the configuration information of each of the at least one candidate secondary base station comprises at least one of the following:
• information about the access resource preconfigured by each candidate secondary base station for the UE or uplink grant information preconfigured by each candidate secondary base station for the UE.

An apparatus, comprising:

• at least one processor configured to:
• receive configuration information of each of at least one candidate secondary base station sent by a network device, wherein each of the at least one candidate secondary base station has made a path handover preparation and is waiting to be selected by a terminal as a target secondary base station, and the path handover preparation comprises at least one of the following:
• preconfiguring an access resource for the terminal or establishing a data transmission channel with the network device;
• and
• hand over to the target secondary base station in the at least one candidate secondary base station according to the configuration information of each of the at least one candidate secondary base station when the terminal needs to be handed over between secondary base stations;
• and
• a memory coupled to the at least one processor, wherein the configuration information of each of the at least one candidate secondary base station comprises at least one of the following:
• information about the access resource preconfigured by each candidate secondary base station for the terminal or uplink grant information preconfigured by each candidate secondary base station for the terminal.