Downlink transmission method and apparatus
US-2024421870-A1 · Dec 19, 2024 · US
Communication device and communication method, computer program, and communication system
US9525473B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9525473-B2 |
| Application number | US-201013258040-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 9, 2010 |
| Priority date | Apr 15, 2009 |
| Publication date | Dec 20, 2016 |
| Grant date | Dec 20, 2016 |
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Abstract
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Suitable beam pattern control is performed while performing access control based on physical carrier sense. A communication device transmits frames having a long preamble under a state where signals will not reach unless a beam pattern is formed, thereby enabling access control based on physical carrier sense, and under a state where signals will sufficiently reach without a beam pattern being formed transmits frames having a shorter preamble, thereby suppressing transmission overhead. Also, a beam pattern and preamble type are decided based on transmission/reception history of access control following CSMA/CA procedures.
First claim
Opening claim text (preview).
The invention claimed is: 1. A communication device, comprising: an antenna configured to form different beam patterns; and circuitry configured to: control frame transmission/reception procedures, control a beam pattern from said different beam patterns of said antenna following said frame transmission/reception procedures, select, at the time of frame transmission, a first preamble type having a first determined preamble length from multiple types of preamble types when sai…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H04B7/0617Primary
Electricity · mapped topic
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- What does patent US9525473B2 cover?
- Suitable beam pattern control is performed while performing access control based on physical carrier sense. A communication device transmits frames having a long preamble under a state where signals will not reach unless a beam pattern is formed, thereby enabling access control based on physical carrier sense, and under a state where signals will sufficiently reach without a beam pattern …
- Who is the assignee on this patent?
- Sakoda Kazuyuki, Morioka Yuichi, Sawai Ryo, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification H04B7/0617. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 20 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).