Data transmission method and apparatus
US-2017207890-A1 · Jul 20, 2017 · US
Method for transmitting frame, clear channel assessment method, and apparatus implementing the same method
US10142148B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10142148-B2 |
| Application number | US-201514932833-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 4, 2015 |
| Priority date | Nov 7, 2014 |
| Publication date | Nov 27, 2018 |
| Grant date | Nov 27, 2018 |
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Abstract
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A method for transmitting frames of a device in a wireless local area network (WLAN) includes generating a symbol in which legacy cyclic prefixes are periodically located and transmitting a frame including the symbol, wherein the symbol includes a data duration excluding cyclic prefix in symbol duration, and the length of the data duration is longer than 3.2 us.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for transmitting frames of a device in a wireless local area network (WLAN), the method comprising: generating a symbol, the symbol including a data duration and a cyclic prefix prepended to the data duration, in which a plurality of legacy cyclic prefixes are periodically located in the data duration at intervals corresponding to a symbol duration of a Very High Throughput (VHT) symbol; and transmitting a frame including the symbol, wherein the length of the data duration is 12.8 microseconds. 2. The method of claim 1 , wherein respective lengths of the legacy cyclic prefixes are 0.8 us or 0.4 us. 3. The method of claim 1 , wherein the legacy cyclic prefixes are included in the symbol such that correlation peaks appears at intervals of 4 us or 3.6 us when a Cyclic Prefix (CP) correlation of the symbol is calculated. 4. The method of claim 1 , wherein the symbol includes the plurality of legacy cyclic prefixes corresponding to a legacy cyclic prefix pattern, and the legacy cyclic prefix pattern shows that the legacy cyclic prefixes are each located at every 3.2 us interval. 5. The method of claim 1 , wherein the symbol is generated by using a 256-point Fast Fourier Transform (FFT). 6. A method for transmitting frames of a device in a wireless local area network (WLAN), the method comprising: generating a symbol satisfying backward compatibility; and transmitting a frame including the symbol satisfying backward compatibility in at least one backward compatibility band designated among a plurality of bands, wherein the symbol satisfying backward compatibility includes a data duration and a High Efficiency (HE) cyclic prefix prepended to the data duration, and the length of the data duration is 12.8 microseconds, and wherein the symbol satisfying backward compatibility includes a plurality of legacy cyclic prefixes corresponding to a legacy pattern, and the legacy pattern includes the legacy cyclic prefixes periodically transmitted according to a symbol duration of a Very High Throughput (VHT) symbol. 7. The method of claim 6 , wherein the backward compatibility band includes guard bands which are in both ends of the plurality of bands. 8. The method of claim 6 , wherein the backward compatibility band includes guard bands which are in both ends of the plurality of bands, and at least one of middle bands which are in the middle of the plurality of bands. 9. The method of claim 6 , wherein the legacy pattern shows that the legacy cyclic prefixes are located at every 3.2 us interval. 10. The method of claim 6 , wherein the legacy cyclic prefixes are located in the data duration of the symbol satisfying backward compatibility. 11. The method of claim 7 , wherein respective lengths of the legacy cyclic prefixes are 0.8 us or 0.4 us. 12. The method of claim 6 , wherein the legacy cyclic prefixes are included in the symbol satisfying backward compatibility such that correlation peaks appears at intervals of 4 us or 3.6 us when a Cyclic Prefix (CP) correlation of the symbol satisfying backward compatibility is calculated.
Assignees
Inventors
Classifications
WLAN [Wireless Local Area Networks] · CPC title
- H04L27/2607Primary
Cyclic extensions · CPC title
Inter-user or inter-terminal allocation · CPC title
- H04W74/0808Primary
using carrier sensing, e.g. carrier sense multiple access [CSMA] · CPC title
the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title
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- What does patent US10142148B2 cover?
- A method for transmitting frames of a device in a wireless local area network (WLAN) includes generating a symbol in which legacy cyclic prefixes are periodically located and transmitting a frame including the symbol, wherein the symbol includes a data duration excluding cyclic prefix in symbol duration, and the length of the data duration is longer than 3.2 us.
- Who is the assignee on this patent?
- Newracom Inc
- What technology area does this patent fall under?
- Primary CPC classification H04L27/2607. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 27 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).