Invention Grant
- Patent Title: Method and device for executing HARQ in TDD-based wireless communication system
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Application No.: US15619665Application Date: 2017-06-12
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Publication No.: US09979513B2Publication Date: 2018-05-22
- Inventor: Dong Youn Seo , Min Gyu Kim , Han Byul Seo , Joon Kui Ahn , Suck Chel Yang
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: H04L1/18
- IPC: H04L1/18 ; H04L5/00 ; H04W72/12 ; H04L5/14 ; H04W72/14 ; H04W88/08

Abstract:
A method is provided for performing a hybrid automatic repeat request (HARQ) by a user equipment (UE). An uplink (UL) grant for a first subframe of a second serving cell is received through a first serving cell. UL data in the first subframe of the second serving cell is transmitted according to the UL grant. When a not-acknowledgement (NACK) for the UL data is received through a physical HARQ indicator channel (PHICH) in a subframe i of the first serving cell, the UE performs a non-adaptive retransmission for the UL data in a second subframe of the second serving cell. When a PHICH resource corresponding to the UL data is not present in the subframe i, the UE does not perform the non-adaptive retransmission in the second subframe of the second serving cell.
Public/Granted literature
- US20170279563A1 METHOD AND DEVICE FOR EXECUTING HARQ IN TDD-BASED WIRELESS COMMUNICATION SYSTEM Public/Granted day:2017-09-28
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