Abstract
The present invention discloses a method for reporting a power headroom report and a user equipment which are applied in the field of communications. The method includes triggering reporting of a first power headroom report and determining that a condition of sending the first power headroom report is satisfied. The condition of sending the first power headroom report includes a determination that uplink data channel transmission occurs in a current transmission time interval. The first power headroom report is obtained. The first power headroom report includes a first power headroom value that includes a difference between maximum transmitting power of a carrier and a sum of transmitting power of a control channel of the carrier and transmitting power of a data channel of the carrier.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 4G | 09/01/2012 | ISLD-201203-013 | HUAWEI |
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| 5G | 02/01/2019 | ISLD-201812-071 | HUAWEI |
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Specification Information
Specification Information
Technologies
Family Information
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| CN102300307A | 4G | 08/10/2011 | ISLD-201110-001 | HUAWEI |
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| CN102300307A | 4G | 09/01/2012 | ISLD-201203-013 | HUAWEI |
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| CN102300307A | 5G | 02/01/2019 | ISLD-201812-071 | HUAWEI |
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| CN102300307B | 4G | 09/01/2012 | ISLD-201203-013 | HUAWEI |
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| EP2981127B1 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration Power Control
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Transmitting/receiving data in uplink
Claim
1. A method for reporting a power headroom report, the method comprising:
triggering reporting of a first power headroom report;
determining that a condition of transmitting the first power headroom report is satisfied, wherein the condition of transmitting the first power headroom report comprises a determination that uplink data channel transmission occurs in a current transmission time interval;
obtaining the first power headroom report and a second power headroom report, wherein the first power headroom report comprises a first power headroom value that comprises a difference between maximum transmitting power of a carrier and a sum of transmitting power of a control channel of the carrier and transmitting power of a data channel of the carrier, and the second power headroom report comprises a second power headroom value that comprises a difference between the maximum transmitting power of the carrier and the transmitting power of the data channel of the carrier;
instructing a multiplexing entity to use the same Medium Access layer control element (MAC CE) to transmit the first power headroom report and the second power headroom report of the carrier in the current transmission time interval; and
transmitting the first power headroom report and the second power headroom report of the carrier in the current transmission time interval using the same MAC CE.
2. The method according to claim 1, wherein the triggering reporting of the first power headroom report comprises at least one of the following steps:
triggering reporting of the first power headroom report when a power headroom report of the data channel of the carrier is triggered;
triggering reporting of the first power headroom report when radio resource control RRC signaling sent by a base station is received;
when default configuration of a user equipment is reporting the first power headroom report, triggering reporting of the first power headroom report according to the default configuration of the user equipment;
triggering reporting of the first power headroom report when a configured periodic timer used to trigger reporting of the first power headroom report expires;
triggering reporting of the first power headroom report when a configured report prohibit timer expires and a measured path loss change of the carrier exceeds a configured first threshold, wherein the report prohibit timer is used to prohibit reporting of the first power headroom report during a timing period of the report prohibit timer;
triggering reporting of the first power headroom report when the data amount of at least one of a channel quality indicator CQI, an acknowledgment ACK, and a negative acknowledgment NACK that are currently sent on the control channel exceeds a configured second threshold;
triggering reporting of the first power headroom report when it is determined that a format for sending the first power headroom report is a set format;
triggering reporting of the first power headroom report when the number of ACKs, NACKs, or periodic CQIs currently sent on the control channel exceeds a configured third threshold; and
triggering reporting of the first power headroom report when one of the number of carriers corresponding to an ACK currently sent on the control channel, the number of carriers corresponding to a NACK currently sent on the control channel, and the number of carriers corresponding to a periodic CQI currently sent on the control channel exceeds a configured fourth threshold.
3. The method according to claim 1, wherein the condition of transmitting the first power headroom report further comprises at least one of the following conditions:
determining that at least one first power headroom report is triggered in the current transmission time interval; and
determining that control information is transmitted on the control channel in the current transmission time interval.
4. The method according to claim 1, wherein the obtaining the first power headroom report comprises:
determining a sending format of the control channel of the carrier:
calculating the transmitting power of the control channel according to the sending format;
obtaining the transmitting power of the data channel; and
using the difference between the maximum transmitting power of the carrier and the sum of the transmitting power of the control channel and the transmitting power of the data channel as the first power headroom value, and bearing the first power headroom value in the first power headroom report.
5. The method according to claim 1, wherein, before transmitting the first power headroom report, the method further comprises:
determining that reporting of the second power headroom report of the carrier is triggered; and
determining that the first power headroom report and the second power headroom report of the carrier are transmitted in the current transmission time interval, and that the size of a current uplink resource is capable of ensuring that the first power headroom report and the second power headroom report of the carrier are transmitted in a current transmission time interval.
6. The method according to claim 1, wherein, after transmitting the first power headroom report, the method further comprises canceling the first power headroom report that has been triggered.
7. An apparatus for reporting a power headroom report, wherein the apparatus comprises a processor and a transmitter and wherein:
the processor is configured to trigger reporting of a first power headroom report and to determine that a condition of transmitting the first power headroom report is satisfied, wherein the condition of transmitting the first power headroom report comprises a determination that uplink data channel transmission occurs in a current transmission time interval;
the processor is configured to obtain the first power headroom report and a second power headroom report when the reporting of the first power headroom report is triggered and it is determined that the condition of transmitting the first power headroom report is satisfied, wherein the first power headroom report comprises a first power headroom value that comprises a difference between maximum transmitting power of a carrier and a sum of transmitting power of a control channel of the carrier and transmitting power of a data channel of the carrier, and the second power headroom report comprises a second power headroom value that comprises a difference between the maximum transmitting power of the carrier and the transmitting power of the data channel of the carrier;
the processor is configured to instruct a multiplexing entity to use the same Medium Access layer control element (MAC CE) to transmit the first power headroom report and the second power headroom report of the carrier in the current transmission time interval; and
the transmitter is configured to transmit the first power headroom report and the second power headroom report of the carrier in the current transmission time interval by the same MAC CE.
8. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when a power headroom report of the data channel of the carrier is triggered.
9. The apparatus according to claim 7, wherein the condition of transmitting the first power headroom report further comprises a determination that at least one first power headroom report has been triggered in the current transmission time interval.
10. The apparatus according to claim 7, wherein the processor is configured to:
determine a sending format of the control channel of the carrier and to calculate the transmitting power of the control channel according to the sending format,
obtain the transmitting power of the data channel, and
use the difference between the maximum transmitting power of the carrier and the sum of the transmitting power of the control channel and the transmitting power of the data channel as the first power headroom value, and to bear the first power headroom value in the first power headroom report.
11. The apparatus according to claim 7, wherein the processor is configured to cancel the first power headroom report that has been triggered, after the transmitter transmits the first power headroom report.
12. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when radio resource control RRC signaling sent by a base station is received.
13. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report according to the default configuration of the user equipment when default configuration of the user equipment is reporting the first power headroom report.
14. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when a configured periodic timer used to trigger reporting of the first power headroom report expires.
15. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when a configured report prohibit timer expires and a measured path loss change of the carrier exceeds a configured first threshold, wherein the report prohibit timer is used to prohibit reporting of the first power headroom report during a timing period of the report prohibit timer.
16. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when the data amount of at least one of a channel quality indicator CQI, an acknowledgment ACK, and a negative acknowledgment NACK that are currently sent on the control channel exceeds a configured second threshold.
17. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when it is determined that a format for sending the first power headroom report is a set format.
18. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when the number of one of ACKs, NACKs, and periodic CQIs that are currently sent on the control channel exceeds a configured third threshold.
19. The apparatus according to claim 7, wherein the processor is configured to trigger reporting of the first power headroom report when one of the number of carriers corresponding to an ACK currently sent on the control channel, the number of carriers corresponding to a NACK currently sent on the control channel, and the number of carriers corresponding to a periodic CQI currently sent on the control channel exceeds a configured fourth threshold.
20. The apparatus according to claim 7, wherein the condition of transmitting the first power headroom report further comprises a determination that control information is transmitted on the control channel in the current transmission time interval.
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