Ultra-wide bandwidth system and method for in-premises wireless networking
US-2015326361-A1 · Nov 12, 2015 · US
Apparatus and method for signal constitution for downlink of OFDMA-based cellular system
USRE45498E · US · E1
| Field | Value |
|---|---|
| Publication number | US-RE45498-E |
| Application number | US-95915410-A |
| Country | US |
| Kind code | E1 |
| Filing date | Jun 2, 2003 |
| Priority date | Dec 13, 2002 |
| Publication date | Apr 28, 2015 |
| Grant date | Apr 28, 2015 |
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Abstract
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Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.
First claim
Opening claim text (preview).
What is claimed is: 1. A downlink signal constitution method, which is for a downlink of a cellular system using an orthogonal frequency division multiplexing access method, the downlink signal constitution method comprising: (a) coding, interleaving, and symbol-mapping data of a common channel and a control channel, and assigning fundamental pilot symbols, necessary for a demodulation of the common channel and the control channel, to time, frequency, and antenna; (b) receiving…
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Classifications
- H04J11/0026Primary
Electricity · mapped topic
- H04L1/0618Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent USRE45498E cover?
- Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some…
- Who is the assignee on this patent?
- Lee Sok-Kyu, Kim Kwang-Soon, Chang Kyung-Hi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04J11/0026. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 28 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (E1). 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).