Power allocation for overlapping transmission when multiple timing advances are used
First Claim
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1. A method for allocating power for overlapping transmissions from user equipment when multiple timing advances are used, the method comprising the steps of:
- scheduling, by user equipment, a first transmission to a base station, during a first frame on a first frequency using a first timing advance;
scheduling, by the user equipment, a second transmission to the base station, during a second frame, using a second timing advance, wherein the second frame occurs later than the first frame and the second timing advance is greater than the first timing advance;
determining, by the user equipment, that the scheduled first transmission and the second transmission to the base station will overlap; and
decreasing, by the user equipment, power to at least the first transmission or the second transmission in response to the determination that the first transmission and the second transmission using first and second timing advances, will overlap.
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Abstract
A method and apparatus for power allocation for overlapping transmissions is provided herein. During operation, user equipment will determine if transmissions to a single base station, on various frequencies, will be overlapping. If so, a determination is made to back off the power for at least one transmission on one frequency.
88 Citations
18 Claims
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1. A method for allocating power for overlapping transmissions from user equipment when multiple timing advances are used, the method comprising the steps of:
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scheduling, by user equipment, a first transmission to a base station, during a first frame on a first frequency using a first timing advance; scheduling, by the user equipment, a second transmission to the base station, during a second frame, using a second timing advance, wherein the second frame occurs later than the first frame and the second timing advance is greater than the first timing advance; determining, by the user equipment, that the scheduled first transmission and the second transmission to the base station will overlap; and decreasing, by the user equipment, power to at least the first transmission or the second transmission in response to the determination that the first transmission and the second transmission using first and second timing advances, will overlap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for allocating power for overlapping transmissions when multiple timing advances are used, the apparatus comprising:
logic circuitry scheduling a first transmission, during a first frame to a first antenna of a base station on a first frequency using a first timing advance, scheduling a second transmission, during a second frame, to a second antenna of the base station using a second timing advance, wherein the second frame occurs later than the first frame and the second timing advance is greater than the first timing advance, the logic circuitry determining that the scheduled first transmission and the second transmission to the base station will overlap and decreasing power to at least the first transmission or the second transmission in response to the determination that the first transmission and the second transmission using first and second timing advances, will overlap. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for computing power headroom reporting comprising:
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receiving, by user equipment, a first resource allocation for a first transmission in a first frame on a first frequency; receiving, by the user equipment, a second resource allocation for a second transmission in a second frame on a second frequency, wherein the second frame occurs later than the first frame; determining, by the user equipment, that the first transmission overlaps at least in part a first orthogonal frequency division multiplexing (OFDM) symbol of the second transmission; and transmitting, by the user equipment, a message including a power headroom for the first OFDM symbol of the second frame on the second frequency in response to the determination that the first transmission and the second transmission will overlap. - View Dependent Claims (18)
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Specification