Method and apparatus for power control of first data transmission in random access procedure of FDMA communication system
First Claim
1. A method for transmit power control by a user equipment (UE), comprising:
- receiving a random access response from an evolved Node B (eNB) sent in response to a random access channel preamble successfully received by the eNB; and
setting transmit power control for a first message transmitted on a physical uplink shared channel based, at least in part, on a transmit power level associated with the random access channel preamble received by the eNB.
1 Assignment
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Accused Products
Abstract
Transmit power is controlled for a first uplink data transmission on Physical Uplink Shared Channel (PUSCH) during random access channel (RACH) procedure. Power control adjustment for the first PUSCH transmission is performed relative to the power spectral density used for successful PRACH transmission as adjusted for bandwidth difference, etc. The uplink Physical random access channel carries the RACH information that is transmitted by the user equipment (UE) during registrations or base station originated calls. A PRACH is composed of a number of preambles and a message portion. The preambles are a series of radio frequency power “steps” that increase in power according to the power step setting until the maximum number of preambles is reached or the base station acknowledges. Once the UE receives a positive indication, it transmits the message portion of the PRACH which consists of message data and control data with independent power gain control.
28 Citations
28 Claims
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1. A method for transmit power control by a user equipment (UE), comprising:
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receiving a random access response from an evolved Node B (eNB) sent in response to a random access channel preamble successfully received by the eNB; and setting transmit power control for a first message transmitted on a physical uplink shared channel based, at least in part, on a transmit power level associated with the random access channel preamble received by the eNB. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for transmit power control by a user equipment (UE), comprising:
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means for receiving a random access response from an evolved Node B (eNB) sent in response to a random access channel preamble successfully received by the eNB; and means for setting transmit power control for a first message transmitted on a physical uplink shared channel based, at least in part, on a transmit power level associated with the random access channel preamble received by the eNB. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for transmit power control by a user equipment (UE), comprising:
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at least one processor configured to; receive a random access response from an evolved Node B (eNB) sent in response to a random access channel preamble successfully received by the eNB; and set transmit power control for a first message transmitted on a physical uplink shared channel based, at least in part, on a transmit power level associated with the random access channel preamble received by the eNB; and a memory coupled to the at least one processor. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A computer program product for transmit power control by a user equipment (UE), the computer-program product comprising a non-transitory computer-readable medium having code stored thereon, the code executable by one or more processors for:
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receiving a random access response from an evolved Node B (eNB) sent in response to a random access channel preamble successfully received by the eNB; and setting transmit power control for a first message transmitted on a physical uplink shared channel based, at least in part, on a transmit power level associated with the random access channel preamble received by the eNB. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification