Method of controlling mobility of UE and apparatus therefor
AssigneeKt Corporation
InventorHa Sung Kim
Life of this patent
Estimating the term…
Abstract
Provided are a method and a base station for controlling mobility of UE. The method may include receiving, by a CU, a measurement report from a UE through a DU; sending, by the CU, a UE context setup request message to a target DU to create a UE context and set a bearer up; sending, by the target DU, a UE context setup response message to the CU to inform the CU of completion of creating the UE context and setting up a bearer; sending, by the CU, a UE context modification request message including a RRC connection reconfiguration message to the source DU; performing, by the target DU, a random access procedure with the UE; and forwarding, by the target DU, an RRC connection reconfiguration complete message received from the UE to the CU.
Claims18
A method of a base station for controlling mobility of user equipment (UE), the method comprising:
- receiving, by a central unit (CU), a measurement report from a UE through a source distributed unit (DU);
- sending, by the CU, a UE context setup request message to a target DU to create a UE context and set a bearer up when determination is made to control mobility of the UE according to the measurement report;
- sending, by the target DU, a UE context setup response message to the CU to inform the CU of completion of creating the UE context and setting up the bearer;
- sending, by the CU, a UE context modification request message including a radio resource control (RRC) connection reconfiguration message to the source DU;
- performing, by the target DU, a random access procedure with the UE;
- and
- forwarding, by the target DU, an RRC connection reconfiguration complete message received from the UE to the CU,
- wherein:
- the CU includes one CU-control plane (CU-CP) and a plurality of CU-user planes (CU-UPs);
- and
- the source DU and the target DU are connected to the same CU-CP through an E1 interface.
A base station for controlling mobility of user equipment (UE), the base station comprising:
- a receiver configured to receive a measurement report from a UE through a source distributed unit (DU);
- a controller configured to, when determination is made to control mobility of the UE according to the measurement report, control a central unit (CU) to send a UE context setup request message to a target DU to create a UE context and set a bearer up, control the target DU to send a UE context setup response message to the CU to inform the CU of completion of creating a UE context and setting up the bearer, and control the CU to send a UE context modification request message including a radio resource control (RRC) connection reconfiguration message to the source DU;
- and
- a transmitter configured to send the RRC connection reconfiguration message to the UE through the source DU,
- wherein the target DU performs a random access procedure with the UE and forwards an RRC connection reconfiguration complete message received from the UE to the CU, and
- wherein:
- the CU includes one CU-control plane (CU-CP) and a plurality of CU-user planes (CU-UPs);
- and
- the source DU and the target DU are connected to different CU-UPs through an E1 interface.
Dependencies are inferred from the claim text.