Patent ID: 11889574
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A user equipment (UE) in a wireless communication system supporting Evolved Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN) New Radio (NR)-Dual Connectivity (ENDC), the UE comprising:
a communication interface; and
a processor configured to:
receive system information comprising information on an NR band list supported in the ENDC through the communication interface,
identify, based on the system information, NR bands supported at Long Term Evolution (LTE) frequencies of LTE bands in a most recently used (MRU) LTE frequency list of the UE,
prioritize the LTE frequencies in the MRU LTE frequency list, based on the supported NR bands and an ENDC capability of the UE, and
perform a cell selection based on the prioritized LTE frequencies in the MRU LTE frequency list,

wherein the ENDC capability of the UE indicates at least one NR band supported by the UE for each of the LTE bands supported by the UE, and
wherein the LTE frequencies in the MRU LTE frequency list are prioritized based on whether the supported NR bands match the ENDC capability of the UE,
wherein the LTE frequencies in the MRU LTE frequency list comprise:
first MRU LTE frequencies that do not support the at least one NR band of the ENDC capability of the UE,
second MRU LTE frequencies supporting NR bands that do not match with the at least one NR band of the ENDC capability of the UE, and
third MRU LTE frequencies supporting NR bands that match with the at least one NR band of the ENDC capability of the UE,

wherein the third MRU LTE frequencies are prioritized over the first MRU LTE frequencies and the second MRU LTE frequencies,
wherein the UE prioritizes at least two of combinations of LTE and NR bands based on peak throughputs of the at least two combinations of LTE and NR bands in a case that the UE detects at least one LTE cell supporting at least two of the combinations of LTE bands and NR bands, and
wherein the peak throughputs are determined based on an available operator bandwidth corresponding to each of the combinations of LTE and NR bands.