Abstract
A radio communication apparatus is provided, which includes a receiver and a controller. The receiver, in operation, receives a first power headroom (PHR), which is obtained by subtracting a transmit power for a data channel from a maximum transmit power at a mobile station and which is transmitted from the mobile station, and receives a second PHR, which is obtained by subtracting the transmit power for the data channel and a transmit power for a control channel from the maximum transmit power at the mobile station and which is transmitted from the mobile station. The controller, in operation, selectively sets a simultaneous transmission of the data channel and the control channel in different frequency bands to be performed by the mobile station. When the data channel and the control channel are simultaneously transmitted in different frequency bands from the mobile station, the second PHR is obtained and transmitted from the mobile station.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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4G | 06/08/2013 | ISLD-201309-038 | PANASONIC CORP |
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4G | 21/09/2018 | ISLD-201812-010 | SUN PATENT TRUST | Yes | Family Member | ||||
4G | 14/12/2020 | ISLD-202012-017 | SUN PATENT TRUST |
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Technologies
Product
Use Cases
Services
Claim
1. A communication apparatus comprising:
circuitry, which, in operation, computes a first power headroom (PHR), the first PHR being obtained by subtracting a transmit power for a physical uplink shared channel (PUSCH) from a maximum transmit power, and computes a second PHR, the second PHR being obtained by subtracting the transmit power for the PUSCH and a transmit power for a physical uplink control channel (PUCCH) from the maximum transmit power; and a transmitter, which, in operation, transmits at least the second PHR when transmitting the PUSCH simultaneously with the PUCCH in a subframe.
2. The communication apparatus according to claim 1, wherein the circuitry, in operation, computes the second PHR when transmitting the PUSCH simultaneously with the PUCCH in the subframe.
3. The communication apparatus according to claim 1, wherein the transmitter, in operation, transmits at least the second PHR when transmitting the PUSCH simultaneously with the PUCCH in different frequency bands of the subframe.
4. The communication apparatus according to claim 1, wherein the transmitter, in operation, transmits at least the second PHR when a simultaneous transmission of the PUSCH and the PUCCH in the subframe is configured.
5. The communication apparatus according to claim 1, wherein the transmitter, in operation, transmits at least the second PHR when a simultaneous transmission of the PUSCH and the PUCCH in different frequency bands of the subframe is configured.
6. The communication apparatus according to claim 1, wherein the maximum transmit power used for computing the second PHR has a value obtained by subtracting an offset from the maximum transmit power used for computing the first PHR.
7. The communication apparatus according to claim 1, wherein the second PHR is transmitted as a media access control (MAC) element in the PUSCH.
8. The communication apparatus according to claim 1, wherein a number of bits for the first PHR equals a number of bits for the second PHR.
9. A communication method comprising:
computing a first power headroom (PHR), the first PHR being obtained by subtracting a transmit power for a physical uplink shared channel (PUSCH) from a maximum transmit power, and computing a second PHR, the second PHR being obtained by subtracting the transmit power for the PUSCH and a transmit power for a physical uplink control channel (PUCCH) from the maximum transmit power; and transmitting at least the second PHR when transmitting the PUSCH simultaneously with the PUCCH in a subframe.
10. The communication method according to claim 9, wherein the computing includes computing the second PHR when transmitting the PUSCH simultaneously with the PUCCH in the subframe.
11. The communication method according to claim 9, wherein the transmitting includes transmitting at least the second PHR when transmitting the PUSCH simultaneously with the PUCCH in different frequency bands of the subframe.
12. The communication method according to claim 9, wherein the transmitting includes transmitting at least the second PHR when a simultaneous transmission of the PUSCH and the PUCCH in the subframe is configured.
13. The communication method according to claim 9, wherein the transmitting includes transmitting at least the second PHR when a simultaneous transmission of the PUSCH and the PUCCH in different frequency bands of the subframe is configured.
14. The communication method according to claim 9, wherein the maximum transmit power used for computing the second PHR has a value obtained by subtracting an offset from the maximum transmit power used for computing the first PHR.
15. The communication method according to claim 9, wherein the second PHR is transmitted as a media access control (MAC) element in the PUSCH.
16. The communication method according to claim 9, wherein a number of bits for the first PHR equals a number of bits for the second PHR.
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.