Transmit power control for physical random access channels
First Claim
1. An integrated circuit configured to control operation of a terminal apparatus, the integrated circuit comprising:
- circuitry, which, in operation, controlstransmitting a transport block at a power for physical uplink shared channel (PUSCH) transmission over a PUSCH of a first component carrier;
transmitting a random access preamble at a power for physical random access channel (PRACH) transmission over a PRACH of a second component carrier;
responsive to a total transmission power exceeding a maximum output power configured for the terminal apparatus PMAX, adjusting the power for PUSCH transmission so that the adjusted total transmission power does not exceed PMAX at an overlapped portion of the PUSCH transmission in a first subframe of the first component carrier and the PRACH transmission in a second subframe of the second component carrier, the second subframe being a subframe with a time offset from the first subframe along a time axis, wherein the power for PRACH transmission is kept unadjusted; and
receiving a random access response to the transmitted random access preamble.
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Accused Products
Abstract
The invention relates to methods for adjusting the transmit power utilized by a mobile terminal for uplink transmissions, and to methods for adjusting the transmit power used by a mobile terminal for one or more RACH procedures. The invention is also providing apparatus and system for performing these methods, and computer readable media the instructions of which cause the apparatus and system to perform the methods described herein. In order to allow for adjusting the transmit power of uplink transmissions on uplink component carriers, the invention suggests introducing a power scaling for uplink PRACH transmissions performing RACH procedures on an uplink component carrier. The power scaling is proposed on the basis of a prioritization among multiple uplink transmissions or on the basis of the uplink component carriers on which RACH procedures are performed.
14 Citations
17 Claims
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1. An integrated circuit configured to control operation of a terminal apparatus, the integrated circuit comprising:
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circuitry, which, in operation, controls transmitting a transport block at a power for physical uplink shared channel (PUSCH) transmission over a PUSCH of a first component carrier; transmitting a random access preamble at a power for physical random access channel (PRACH) transmission over a PRACH of a second component carrier; responsive to a total transmission power exceeding a maximum output power configured for the terminal apparatus PMAX, adjusting the power for PUSCH transmission so that the adjusted total transmission power does not exceed PMAX at an overlapped portion of the PUSCH transmission in a first subframe of the first component carrier and the PRACH transmission in a second subframe of the second component carrier, the second subframe being a subframe with a time offset from the first subframe along a time axis, wherein the power for PRACH transmission is kept unadjusted; and receiving a random access response to the transmitted random access preamble. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An integrated circuit configured to control operation of a terminal apparatus, the integrated circuit comprising:
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transmission circuitry, which, in operation, controls transmission of a transport block at a power for physical uplink shared channel (PUSCH) transmission over a PUSCH of a first component carrier; and transmission of a random access preamble at a power for physical random access channel (PRACH) transmission over a PRACH of a second component carrier; control circuitry, which is coupled to the transmission circuitry and which, responsive to a total transmission power exceeding a maximum output power configured for the terminal apparatus PMAX, adjusts the power for PUSCH transmission so that the adjusted total transmission power does not exceed PMAX at an overlapped portion of the PUSCH transmission in a first subframe of the first component carrier and the PRACH transmission in a second subframe of the second component carrier, the second subframe being a subframe with a time offset from the first subframe along a time axis, wherein the power for PRACH transmission is kept unadjusted; and reception circuitry, which is coupled to the control circuitry and which, in operation, receives a random access response to the transmitted random access preamble. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification