CPC H04W 8/24 (2013.01) [H04W 24/02 (2013.01)] | 18 Claims |
1. A method performed by a distributed unit (DU) of a next generation node B (gNB) in a wireless communication system, the method comprising:
transmitting, to a central unit (CU) of the gNB, a user equipment (UE) context modification required message to request a UE context modification;
receiving, from the CU, a UE context modification refuse message indicating that the UE context modification is unsuccessful; and
receiving, from the CU, a UE context modification request message including a complete indicator of a reconfiguration procedure,
wherein the reconfiguration procedure is based on a change of at least one parameter of the DU of the gNB signaled to the gNB-CU,
wherein the reconfiguration procedure is associated with an evolved node B (eNB) and the eNB and the gNB are configured in a dual connectivity,
wherein the UE context modification required message includes a gNB-CU UE identifier (ID) for identifying a UE within the CU and a gNB-DU UE ID for identifying a UE within the DU,
wherein the UE context modification refuse message includes the gNB-CU UE ID, the gNB-DU UE ID, and information on a cause of the unsuccessful UE context modification,
wherein the CU is associated with a radio resource control (RRC) layer and a packet data convergence protocol (PDCP) layer, and
wherein the DU is associated with a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical (PHY) layer.
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