Abstract
A multi-user MIMO downlink beamforming system with limited feedback ( 200) is provided to enable preceding for multi-stream transmission where a channel codeword (ui) and one or more channel quality indicator values (CQIA CQIB) are computed at the user equipment (201.i) on the basis of maximizing a predetermined SINR performance metric (?i) which estimates the receive signal-to-noise-ratio (SINR) at the user equipment (201.i). The computed codeword (ui) and CQI values (or differential values related thereto) are quantized and fed back to help the base station (210) which applies a correction to the appropriate CQI value in the course of designing the transmit beamforming vectors w and determining the appropriate modulation and coding level to be used for downlink data transmission.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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Yes | Basis Patent | |||
| 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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Yes | Basis Patent | |||
| 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
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| US2008165875A1 | 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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Yes | Basis Patent | |||
| US2008165875A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
| US2008165875A1 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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Yes | Basis Patent | |||
| US2012076032A1 | 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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| US2012076032A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | Yes | Basis Patent | ||||
| US2012076032A1 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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No | Family Member | |||
| US8437422B2 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | Yes | Basis Patent | ||||
| US8437422B2 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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No | Family Member | |||
| US2014192915A1 | 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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No | Family Member | |||
| US2014192915A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
| US2014192915A1 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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No | Family Member | |||
| US9225398B2 | 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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No | Family Member | |||
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| US9225398B2 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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No | Family Member | |||
| US2016191125A1 | 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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No | Family Member | |||
| US2016191125A1 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
| US2016191125A1 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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No | Family Member | |||
| US9991939B2 | 4G | 11/11/2011 | ISLD-201111-006 | APPLE INC |
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No | Family Member | |||
| US9991939B2 | 4G | 31/10/2013 | ISLD-201404-001 | APPLE INC | No | Family Member | ||||
| US9991939B2 | 4G | 10/06/2010 | ISLD-201006-004 | FREESCALE SEMICONDUCTOR INC |
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No | Family Member | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration Channel Status Information(CSI) Reporting
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Channel Quality Measurement/Estimation
Claim
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