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Method For Transmitting He-Ltf Sequence And Apparatus - EP3937445
The patent EP3937445 was granted to Huawei on Jun 7, 2023. The application was filed on Aug 26, 2016 under application number EP21165745A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
EP3937445
- Application Number
- EP21165745A
- Filing Date
- Aug 26, 2016
- Status
- Granted And Under Opposition
- May 5, 2023
- Publication Date
- Jun 7, 2023
- External Links
- Slate, Register, Google Patents
Patent Summary
Reducing peak-to-average power ratio (PAPR) in wireless local area network (WLAN) transmissions by optimizing the long training field (LTF) sequence used for channel estimation in orthogonal frequency division multiple access (OFDMA) WLAN systems like WiFi 6 (802.11ax). The method involves generating the LTF sequence specifically for the WLAN tone plan and resource unit (RU) sizes. This reduces PAPR compared to reusing sequences from older OFDM systems. The LTF is generated by selecting subcarriers corresponding to scheduled resource blocks instead of padding with zeros. This provides a better match between the LTF and data subcarriers.
Patent Family
Patent Oppositions (2)
Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Dossier Documents
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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