US Patent No. 10,462,804

METHOD AND APPARATUS FOR SUPPORTING COEXISTENCE IN UNLICENSED BAND AMONG CELLS OF DIFFERENT OPERATORS IN WIRELESS COMMUNICATION SYSTEM


Patent No. 10,462,804
Issue Date October 29, 2019
Title Method And Apparatus For Supporting Coexistence In Unlicensed Band Among Cells Of Different Operators In Wireless Communication System
Inventorship Yunjung Yi, Seoul (KR)
Joonkui Ahn, Seoul (KR)
Daesung Hwang, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,462,804

1. A method performed by a user equipment (UE) with a base station (BS) of a first operator in an unlicensed spectrum, the method comprising:performing carrier sensing on a wireless local area network (WLAN) in a first potential transmission time unit (P-TTU);
detecting a Wi-Fi signal in the first P-TTU;
when an interference level of the Wi-Fi signal is below a threshold, transmitting information on a pattern of the first P-TTU desired by the UE to the BS of the first operator,
wherein the information on the pattern of the first P-TTU includes a time interval in which the UE desires to communicate with the BS of the first operator in the unlicensed spectrum;
receiving information on a pattern of a second P-TTU from the BS of the first operator, in response to the information on the pattern of the first P-TTU,
wherein the information on the pattern of the second P-TTU includes a first set of P-TTUs assigned to the BS of the first operator and a second set of P-TTUs assigned to another BS of a second operator, and
wherein the first set of P-TTUs and the second set of P-TTUs are multiplexed by a time division multiplexing (TDM);
communicating with the BS of the first operator in the first set of P-TTUs;
receiving an indication that there will be no data transmission in the second set of P-TTUs; and
communicating with the BS of the first operator in the second set of P-TTUs, upon receiving the indication.