US 2018/0295544 A1 · METHOD AND DEVICE FOR ANCHOR REPLACEMENT

Abstract

Disclosed is a method and device for anchor replacement. The method comprises: a target base station receives an anchor replacement request message transmitted by a source base station, wherein the source base station is a base station corresponding to a serving cell that currently provides a service for a terminal and has control decision making authority, the target base station is a base station corresponding to a secondary cell that is controlled by the serving cell and currently provides a service for the terminal, and the anchor replacement request message is used for requesting to handover the control decision making authority to the target base station; the target base station transmits an anchor replacement acknowledgement message to the source base station, wherein the anchor replacement acknowledgement message is used for acknowledging the anchor replacement request message. By means of the method for anchor replacement of the present invention, a terminal can continue transmitting user data while handover is being performed, and can obtain control signaling from a plurality of base stations, thereby ensuring smooth handover of the terminal, reducing handover latency, and improving the user experience during handover.

Claims21

Dependent claims

A handover method, comprising:

receiving, by a target base station, a handover request message sent by a source base station, wherein the source base station is a Master Node (MN) corresponding to a serving cell which currently provides service for a terminal and determines UE RRC (Radio Resource Control state or terminates S1 interface, the target base station is a Second Node (SN) corresponding to Secondary Cell(s) which comprises PSCell and SCell and is controlled by the serving cell and currently provides service for the terminal, and the anchor handover request message is configured to request to handover the RRC state decision control or S1 termination to the target base station;
and
sending, by the target base station, a handover acknowledgement message to the source base station, wherein the handover acknowledgement message is to acknowledge the handover request message.

A handover method, comprising:

sending, by a source base station, a handover request message to a target base station, wherein the source base station is a Master Node (MN) corresponding to a serving cell which determines UE RRC (Radio Resource Control) state or terminates S1 interface, the target base station is a Second Node (SN) corresponding to Secondary Cell(s) which comprises PSCell and SCell and is controlled by the serving cell and currently provides service for the terminal, and the handover request message is configured to request to handover the RRC state decision control or S1 termination to the target base station;
and
receiving, by the source base station, a handover acknowledgement message sent by the target base station, wherein the handover acknowledgement message is to acknowledge the handover request message.

Dependencies are inferred from the claim text.

Method and device for anchor replacement

Life of this patent

Method and device for anchor replacement

Life of this patent

Abstract

Claims21