UE based conditional enabling of ULTD
First Claim
1. A method for uplink transmit diversity, comprising:
- transmitting, by a user equipment (UE), an uplink on a first antenna of the UE;
determining that a serving node has conditionally authorized uplink transmit diversity;
measuring a value; and
transmitting, by the UE, the uplink, at least in part, on a second antenna of the UE for uplink transmit diversity in response to determining that the serving node has conditionally authorized uplink transmit diversity and determining that an enabling condition based on the value is satisfied.
1 Assignment
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Accused Products
Abstract
In a communication system, user equipment (UE) conditionally performs uplink transmit diversity (ULTD) either by Switched Antenna Transmit Diversity (SATD) or Beamforming Transmit Diversity (BFTD) using a first antenna and a second antenna. Either a serving node or the UE determines that uplink transmit diversity is conditionally authorized. Either a serving node or the UE measures a value. The UE transmits using ULTD in response to determining that an enabling condition based on the value is satisfied. The UE can also disable uplink transmit diversity in response to determining that a disabling condition based on the value is satisfied. The disabling condition comprises a disabling threshold that equals the enabling condition comprising an enabling threshold with a threshold adjustment for hysteresis.
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Citations
29 Claims
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1. A method for uplink transmit diversity, comprising:
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transmitting, by a user equipment (UE), an uplink on a first antenna of the UE; determining that a serving node has conditionally authorized uplink transmit diversity; measuring a value; and transmitting, by the UE, the uplink, at least in part, on a second antenna of the UE for uplink transmit diversity in response to determining that the serving node has conditionally authorized uplink transmit diversity and determining that an enabling condition based on the value is satisfied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An apparatus for uplink transmit diversity, comprising:
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means for transmitting, by a user equipment (UE), an uplink on a first antenna of the UE; means for determining that a serving node has conditionally authorized uplink transmit diversity; means for measuring a value; and means for transmitting, by the UE, the uplink, at least in part, on a second antenna of the UE for uplink transmit diversity in response to determining that the serving node has conditionally authorized uplink transmit diversity and determining that an enabling condition based on the value is satisfied.
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29. An apparatus for uplink transmit diversity, comprising:
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a transmitter for transmitting, by a user equipment (UE), an uplink on a first antenna; an uplink transmit diversity controller for determining that a serving node has conditionally authorized uplink transmit diversity; a receiver for measuring a value; and the transmitter further for transmitting, by the UE, the uplink, at least in part, on a second antenna of the user equipment for uplink transmit diversity in response to the uplink transmit diversity controller for determining that the serving node has conditionally authorized uplink transmit diversity and determining that an enabling condition based on the value is satisfied.
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Specification