US 11,910,248 B2 · Method and apparatus for performing handover in a next-generation communication system

Abstract

The disclosure relates to a 5G or pre-5G communication system for supporting a data transmission rate higher than a 4G communication system such as LTE. A method performed by a UE in a communication system includes: receiving, from a base station associated with NR, a command message for inter-RAT handover from the NR to a target RAT, wherein the command message includes information on a type of the target RAT; performing a procedure associated with the inter-RAT handover based on the command message; in case that a failure condition for the inter-RAT handover is satisfied, identifying that the inter-RAT handover fails; and in case that the type of the target RAT is set to EUTRA and the UE supports a radio link failure report for inter-RAT MRO EUTRA, storing handover failure information in a variable for the radio link failure report based on an identification that the inter-RAT handover fails.

Claims16

Dependent claims

A method performed by a user equipment (UE) in a communication system, the method comprising:

receiving, from a base station associated with new radio-radio access (NR), a command message for inter-radio access technology (RAT) handover from the NR to a target RAT, wherein the command message includes information on a type of the target RAT;
performing a procedure associated with the inter-RAT handover based on the command message;
in case that a failure condition for the inter-RAT handover is satisfied, identifying that the inter-RAT handover fails;
and
in case that the type of the target RAT is set to evolved universal terrestrial radio access (EUTRA) and the UE supports a radio link failure report for inter-RAT mobility robustness optimization (MRO) EUTRA, storing handover failure information in a variable for the radio link failure report based on an identification that the inter-RAT handover fails.

2 more elements

A user equipment (UE) in a communication system, the UE comprising:

a transceiver;
and
a controller operably coupled to the transceiver, the controller configured to:
receive, from a base station associated with new radio-radio access (NR) via the transceiver, a command message for inter-radio access technology (RAT) handover from the NR to a target RAT, wherein the command message includes information on a type of the target RAT,
perform a procedure associated with the inter-RAT handover based on the command message,
in case that a failure condition for the inter-RAT handover is satisfied, identify that the inter-RAT handover fails, and
in case that the type of the target RAT is set to evolved universal terrestrial radio access (EUTRA) and the UE supports a radio link failure report for inter-RAT mobility robustness optimization (MRO) EUTRA, store handover failure information in a variable for the radio link failure report based on an identification that the inter-RAT handover fails.

4 more elements

Dependencies are inferred from the claim text.

Method and apparatus for performing handover in a next-generation communication system

Life of this patent

Method and apparatus for performing handover in a next-generation communication system

Life of this patent

Abstract

Claims16