Invention Grant
- Patent Title: Retransmission schemes based on LLR combining in WLAN
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Application No.: US16570518Application Date: 2019-09-13
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Publication No.: US11252603B2Publication Date: 2022-02-15
- Inventor: Jianhan Liu , Yongho Seok , Chung-Ta Ku , Thomas Edward Pare, Jr.
- Applicant: MediaTek Singapore Pte. Ltd.
- Applicant Address: SG Solaris
- Assignee: MediaTek Singapore Pte. Ltd.
- Current Assignee: MediaTek Singapore Pte. Ltd.
- Current Assignee Address: SG Solaris
- Main IPC: H04W28/04
- IPC: H04W28/04 ; H04L1/16 ; H04L1/18 ; H04W80/02 ; H04W84/12

Abstract:
Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Packets that are received with an error are stored, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.
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