US Patent No. 9,918,332

METHOD AND DEVICE FOR UE-BASE STATION COMMUNICATION BY USING UNLICENSED SPECTRUM


Patent No. 9,918,332
Issue Date March 13, 2018
Title Method And Device For Ue-base Station Communication By Using Unlicensed Spectrum
Inventorship XiaoBo Zhang, Shanghai (CN)
Assignee SHANGHAI LANGBO COMMUNICATION TECHNOLOGY COMPANY LIMITED, Shanghai (CN)

Claim of US Patent No. 9,918,332

1. A method adopting an unlicensed spectrum communication in a UE, comprising the following step:
step A: detecting a first physical layer signaling for scheduling a first carrier on a first sub frame of the first carrier,
and detecting a second physical layer signaling for scheduling the first carrier on a second sub frame of a second carrier;

step B: receiving a downlink physical layer data according to the first physical layer signaling; and
step C: transmitting a HARQ_ACK for the downlink physical layer data on a serving cell belonged to the second carrier;
wherein the first carrier is deployed on an unlicensed spectrum, the second serving cell is deployed on a licensed spectrum,
the first sub frame and the second frame are two different sub frames, and for the UE, the first carrier is self-scheduled
and cross-carrier scheduled;

wherein the serving cell belonged to the second carrier is a primary cell, the first sub frame is a latest downlink sub frame
in the downlink sub frame indicated by the HARQ_ACK, the UE detects and gets the first physical layer signaling in the first
sub frame, a generating parameter of PUCCH resource occupied by the HARQ_ACK comprises a first index; the first index is an
index of a first CCE occupied by the first physical layer signaling in PDCCH of the first sub frame of the first carrier,
or an index of a first eCCE occupied by the first physical layer signaling in a corresponding EPDCCH-PRB-set.