Device-to-device (D2D) cross link power control
First Claim
1. A method of controlling a cross link transmit power level on a wireless transmit/receive unit (WTRU), the method comprising:
- selecting a cross link transmit power control (TPC) formula for a cross link transmission from the WTRU to another WTRU, wherein the cross link TPC formula is selected from at least a first cross link TPC formula and a second cross link TPC formula, wherein the first cross link TPC formula is based on a bandwidth of the cross link transmission and path loss information;
determining a cross link transmit power level in accordance with at least the selected cross link TPC formula; and
sending, by the WTRU to the other WTRU, the cross link transmission with a cross link transmit power set to the determined cross link transmit power level,wherein the first cross link TPC formula is associated with a first cross link power control mode and the second cross link TPC formula, is associated with a second cross link power control mode.
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Abstract
Device-to-device (D2D) cross link power control systems and methods may be disclosed. For example, a device such as a UE or WTRU may determine whether it may have simultaneous transmissions where at least one of the transmissions may include a cross link transmission. The device may further determine whether a total transmit power of the simultaneous transmissions may exceed a maximum transmit power of the device. If the device may have simultaneous transmissions and such transmissions may exceed the maximum transmit power, the device may reallocate power based on a priority or priority setting. The device may further determine a maximum cross link power, a maximum device power, and a cross link transmit power level such that the device may further control the power for transmissions based thereon.
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Citations
20 Claims
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1. A method of controlling a cross link transmit power level on a wireless transmit/receive unit (WTRU), the method comprising:
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selecting a cross link transmit power control (TPC) formula for a cross link transmission from the WTRU to another WTRU, wherein the cross link TPC formula is selected from at least a first cross link TPC formula and a second cross link TPC formula, wherein the first cross link TPC formula is based on a bandwidth of the cross link transmission and path loss information; determining a cross link transmit power level in accordance with at least the selected cross link TPC formula; and sending, by the WTRU to the other WTRU, the cross link transmission with a cross link transmit power set to the determined cross link transmit power level, wherein the first cross link TPC formula is associated with a first cross link power control mode and the second cross link TPC formula, is associated with a second cross link power control mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless transmit/receive unit (WTRU) comprising:
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a transmitter; a receiver; and a processor, operably coupled to the receiver and the transmitter, configured to; select a cross link transmit power control (TPC) formula for a cross link transmission from the WTRU to another WTRU, wherein the cross link TPC formula is selected from at least a first cross link TPC formula and a second cross link TPC formula, wherein the first cross link TPC formula is based on a bandwidth of the cross link transmission and path loss information, and determine a cross link transmit power level in accordance with at least the selected cross link TPC formula; and the transmitter configured to send to the other WTRU the cross link transmission with a cross link transmit power set to the determined cross link transmit power level, wherein the first cross link TPC formula associated with a first cross link power control mode and the second cross link TPC formula is associated with a second cross link power control mode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification