Power headroom report method and apparatus of UE
First Claim
1. A method for reporting a power headroom (PH) by a terminal in a wireless communication system, the method comprising:
- transmitting a first power headroom report (PHR) based on a first uplink resource allocated to a serving cell;
determining whether a second uplink resource is allocated to the serving cell;
identifying whether power backoff due to power management has changed more than a threshold since a transmission of the first PHR, in case that the second uplink resource is allocated to the serving cell; and
transmitting, to a base station, a second PHR based on the second uplink resource, in case that the power backoff due to the power management has changed more than the threshold since the transmission of the first PHR,wherein the second PHR is transmitted based on a first type PHR of the first type PHR and a second type PHR, andwherein the first type PHR includes the PH for each of at least one serving cell and bitmap information indicating a serving cell for which the PH is to be reported.
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Abstract
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.
An improved method and an apparatus for reporting Power Headroom (PH) of a UE are provided. The Power Headroom Report (PHR) method of the present invention includes determining whether to trigger PHR based on a change of Power Management Maximum Power Reduction (P-MPR) between two time points, generating, if PHR is determined to be triggered, Power Headroom, and reporting the Power Headroom information to a base station.
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Citations
22 Claims
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1. A method for reporting a power headroom (PH) by a terminal in a wireless communication system, the method comprising:
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transmitting a first power headroom report (PHR) based on a first uplink resource allocated to a serving cell; determining whether a second uplink resource is allocated to the serving cell; identifying whether power backoff due to power management has changed more than a threshold since a transmission of the first PHR, in case that the second uplink resource is allocated to the serving cell; and transmitting, to a base station, a second PHR based on the second uplink resource, in case that the power backoff due to the power management has changed more than the threshold since the transmission of the first PHR, wherein the second PHR is transmitted based on a first type PHR of the first type PHR and a second type PHR, and wherein the first type PHR includes the PH for each of at least one serving cell and bitmap information indicating a serving cell for which the PH is to be reported. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A terminal for reporting a power headroom (PH) in a wireless communication system, the terminal comprising:
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a transceiver; and a controller coupled with the transceiver and configured to control to; transmit a first power headroom report (PHR) based on a first uplink resource allocated to a serving cell; determine whether a second uplink resource is allocated to the serving cell; identify whether power backoff due to power management has changed more than a threshold since a transmission of the first PHR, in case that the second uplink resource is allocated to the serving cell; and transmit, to a base station, a second PHR based on the second uplink resource, in case that the power backoff due to the power management has changed more than the threshold since the transmission of the first PHR, wherein the second PHR is transmitted based on a first type PHR of the first type PHR and a second type PHR, and wherein the first type PHR includes the PH for each of at least one serving cell and bitmap information indicating a serving cell for which the PH is to be reported. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for receiving a power headroom (PH) by a base station in a wireless communication system, the method comprising:
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receiving, from a terminal, a first power headroom report (PHR) based on a first uplink resource allocated to a serving cell; and receiving, from the terminal, a second PHR based on a second uplink resource allocated to the serving cell, in case that power backoff due to power management of the terminal has changed more than a threshold since the transmission of the first PHR, wherein it is identified by the terminal whether the power backoff due to the power management has changed more than the threshold since the transmission of the first PHR, wherein the second PHR is received based on a first type PHR of the first type PHR and a second type PHR, and wherein the first type PHR includes the PH for each of at least one serving cell and bitmap information indicating a serving cell for which the PH is to be reported. - View Dependent Claims (14, 15, 16, 17)
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18. A base station for receiving a power headroom (PH) in a wireless communication system, the base station comprising:
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a transceiver; and a controller coupled with the transceiver and configured to control to; receive, from a terminal, a first power headroom report (PHR) based on a first uplink resource allocated to a serving cell, and receive, from the terminal, a second PHR based on a second uplink resource allocated to the serving cell, in case that power backoff due to power management of the terminal has changed more than a threshold since the transmission of the first PHR, wherein it is identified by the terminal whether the power backoff due to the power management has changed more than the threshold since the transmission of the first PHR, wherein the second PHR is received based on a first type PHR of the first type PHR and a second type PHR, and wherein the first type PHR includes the PH for each of at least one serving cell and bitmap information indicating a serving cell for which the PH is to be reported. - View Dependent Claims (19, 20, 21, 22)
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Specification