Power headroom reporting method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsLiuliu Ji, Haibao Ren, Long Qin
Life of this patent
Estimating the term…
Abstract
Embodiments of this application provide a power headroom reporting method and apparatus. Impact of introduction of multi-beam transmission, a plurality of time-frequency resource configurations, or an uplink multi-waveform technology on a power headroom is considered, so that the power headroom is calculated and reported more accurately, to help a network side make a scheduling decision, thereby improving communication performance.
Claims20
A power headroom reporting method, comprising:
- determining, by a terminal, a power headroom (PH) in a subframe of a serving cell, wherein the terminal performs transmission in the subframe of the serving cell through K beams or beam groups, and K is a positive integer greater than or equal to 2, wherein the determining the PH further comprises:
- determining the PH based on a beam-level power control parameter of the K beams or beam groups to obtain one PH value;
- or separately determining PHs for K1 beams or beam groups to obtain K1 PH values, wherein K1 is a positive integer less than or equal to K;
- and
- reporting, by the terminal, a power headroom report (PHR), wherein the PHR comprises one of the following (a)-(d):
- (a) information about the determined PH value based on the beam-level power control parameter of the K beams or beam groups;
- (b) information about the K1 PH values;
- (c) information about a reference PH value and information about an offset value, wherein the reference PH value is one of the K1 PH values, and the offset value is an offset value of another PH value in the K1 PH values relative to the reference PH value;
- or the reference PH value is a baseline PH value, and the offset value is offset values of the K1 PH values relative to the baseline PH value;
- (d) information about an average value of the K1 PH values.
An apparatus, comprising at least one processor and a memory coupled to the at least one processor and having processor-executable instructions stored thereon, which when executed, cause the at least one processor being to:
- determine a power headroom (PH) in a subframe of a serving cell, wherein transmission is performed in the subframe of the serving cell through K beams or beam groups, and K is a positive integer greater than or equal to 2;
- wherein the determining the PH further comprises:
- determining the PH based on a beam-level power control parameter of the K beams or beam groups to obtain one PH value;
- or separately determining PHs for K1 beams or beam groups to obtain K1 PH values, wherein K1 is a positive integer less than or equal to K;
- and
- report a power headroom report (PHR), wherein the PHR comprises one of the following (a)-(d):
- (a) information about the determined PH value based on the beam-level power control parameter of the K beams or beam groups;
- (b) information about the K1 PH values;
- (c) information about a reference PH value and information about an offset value, wherein the reference PH value is one of the K1 PH values, and the offset value is an offset value of another PH value in the K1 PH values relative to the reference PH value;
- or the reference PH value is a baseline PH value, and the offset value is offset values of the K1 PH values relative to the baseline PH value;
- (d) information about an average value of the K1 PH values.
A non-transitory computer-readable storage medium, comprising a program, which when being executed by a processor, cause the processor to perform the following
- determining a power headroom (PH) in a subframe of a serving cell, wherein transmission is performed in the subframe of the serving cell through K beams or beam groups, and K is a positive integer greater than or equal to 2, wherein the determining the PH further comprises:
- determining the PH based on a beam-level power control parameter of the K beams or beam groups to obtain one PH value;
- or separately calculating PHs for K1 beams or beam groups to obtain K1 PH values, wherein K1 is a positive integer less than or equal to K;
- and
- reporting a power headroom report (PHR), wherein the PHR comprises one of the following (a)-(d):
- (a) information about the determined PH value based on the beam-level power control parameter of the K beams or beam groups;
- (b) information about the K1 PH values;
- (c) information about a reference PH value and information about an offset value, wherein the reference PH value is one of the K1 PH values, and the offset value is an offset value of another PH value in the K1 PH values relative to the reference PH value;
- or the reference PH value is a baseline PH value, and the offset value is offset values of the K1 PH values relative to the baseline PH value;
- and
- (d) information about an average value of the K1 PH values.
Dependencies are inferred from the claim text.