Systems and methods for reducing a relatively high power, approximately constant envelope interference signal that spectrally overlaps a relatively low power desired signal
US-9391654-B2 · Jul 12, 2016 · US
Method and apparatus for estimating reverse link loading in a wireless communication system
US8929908B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8929908-B2 |
| Application number | US-55395506-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 27, 2006 |
| Priority date | Oct 27, 2005 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
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Method and apparatus for estimating reverse link loading in a wireless communication system. The reverse link interference is measured and reverse link receiver noise is measured. The reverse link interference is compared to the reverse link receiver noise, for example, by dividing the interference power by the receiver noise power. The reverse link receiver noise can be measured in an orthogonal frequency division multiple access (OFDMA) system by nulling transmission from access terminals within the cell and nearby during a null time and frequency interval. Power measure in the null time and frequency interval is receiver noise power. The reverse link interference can be measure by several means. For example, local null time and frequency intervals can be designated. The access terminals within the cell null their transmissions during the local time and frequency intervals. Access terminals outside the cell continue to transmit during the local time and frequency intervals. Power measured in the local time and frequency interval is interference power. As another example, interference power can be measured by subtracting pairs of pilot symbols that are contiguous to each other in time or frequency.
First claim
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We claim: 1. A method of calculating a reverse link loading in an orthogonal frequency division multiple access wireless communication system, the method comprising: estimating, at an access point, interference from at least one access terminal not being served by the access point, wherein estimating interference comprises: detecting a first pilot signal; detecting a second pilot signal that is contiguous to the first pilot signal in time or frequency; and subtracting the fir…
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Electricity · mapped topic
- H04B17/005Primary
Electricity · mapped topic
- H04B17/382Primary
Electricity · mapped topic
- H04B17/345Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US8929908B2 cover?
- Method and apparatus for estimating reverse link loading in a wireless communication system. The reverse link interference is measured and reverse link receiver noise is measured. The reverse link interference is compared to the reverse link receiver noise, for example, by dividing the interference power by the receiver noise power. The reverse link receiver noise can be measured in an orthogon…
- Who is the assignee on this patent?
- Agrawal Avneesh, Milikovsky Dmitry R, Black Peter J, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04B17/005. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 06 2015 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).