Abstract
Techniques for transmit power control for multiple antenna transmissions in an uplink are disclosed. A wireless transmit/receive unit (WTRU) generates at least one input stream for transmission and applies a gain factor to each channel. The gain factor is determined based on a reference channel power estimate. The WTRU generates at least two data streams from the input stream for transmission via a plurality of antennas and applies weights to the data streams. The gain factor and/or the weights are controlled such that a transmit power on each antenna is within a maximum allowed value. The WTRU may perform power scaling on a condition that a transmit power on any antenna exceeds the maximum allowed value. The WTRU may scale down an enhanced dedicated channel (E-DCH) dedicated physical data channel (E-DPDCH) first before other channels. For multiple E-DCH streams the WTRU may calculate an E-DPDCH power offset based on an additional power offset factor due to multiple stream transmission.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
3G | 31/10/2011 | ISLD-201109-010 | INTERDIGITAL INC |
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3G | 22/12/2016 | ISLD-201706-015 | INTERDIGITAL INC |
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4G | 22/12/2016 | ISLD-201706-015 | INTERDIGITAL INC |
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Not Available | 22/12/2016 | ISLD-201706-015 | INTERDIGITAL INC |
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No | Family Member | |||
5G | 08/11/2019 | ISLD-201910-015 | INTERDIGITAL INC | No | Family Member |
Specification Information
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