Invention Grant
- Patent Title: HARQ operation when TDD cell and FDD cell are included in carrier aggregation
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Application No.: US16006319Application Date: 2018-06-12
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Publication No.: US10355849B2Publication Date: 2019-07-16
- Inventor: Daesung Hwang , Joonkui Ahn , Dongyoun Seo , Suckchel Yang , Yunjung Yi
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Lee Hong Degerman Kang & Waimey
- Main IPC: H04L5/14
- IPC: H04L5/14 ; H04L1/00 ; H04L1/18 ; H04L5/00 ; H04W72/04 ; H04L1/16 ; H04W88/02

Abstract:
One disclosure of the present specification provides a method for operating a HARQ from user equipment (UE). The method comprises the steps of: the UE receiving downlink data from each cell, when at least one TDD-based cell and at least one FDD based cell are established according to carrier aggregation (CA), a specific TDD-based cell is established as a primary cell of the carrier aggregation (CA), and the at least one FDD-based cell is established as a secondary cell of the carrier aggregation (CA); the UE confirming a PUCCH format to be used for transmitting a HARQ ACK/NACK for the downlink data; and the UE determining the number of bits for transmitting the HARQ ACK/NACK when use of the specific PUCCH format for transmitting the HARQ ACK/NACK is confirmed.
Public/Granted literature
- US20180294943A1 HARQ OPERATION WHEN TDD CELL AND FDD CELL ARE INCLUDED IN CARRIER AGGREGATION Public/Granted day:2018-10-11
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