name: HPBW
full_form: Half Power Beamwidth
context: 5.3.3-1) to the SCS: On the frequency axis, the linear spectral regrowth due to windowing scales with the SCS. The smaller the guard-to-SCS ratio, the higher emission and thus the higher required power back-off. Below 50 MHz CBW, the guard-to-SCS ratio mostly increases with increasing CBW, resulting in decreasing needed back-off. From 50 MHz upwards, the guard-to-SCS ratio mostly decreases with increasing CBW, resulting in increasing needed back-off. From the simulation data, the allowed MPR can be defined as described in clause 5.1.2.6. This will avoid allowing MPR that is more than necessary. For example, adopting a proposal to define the allowed MPR with a common value for all CBW <50 MHz and a common value for all CBW â¥50 MHz will result in a 2dB power back-off more than necessary for 45 MHz and 50 MHz CBW which, in turn, would lead to 2dB UL coverage loss. This is illustrated as green lines in Figure 5.1.2-9. The Edge RB allocations are narrow allocations at or close to channel
description: Half Power Beamwidth (HPBW) refers to the angular distance between the two points on either side of the beam axis where the power density has decreased to half of its maximum value. In the context of beam sweeping test signal design, HPBW is used as a criterion for determining horizontal and vertical beam separation in azimuth and elevation directions, respectively.
explanation: HPBW is classified as a Measurement because it quantifies a specific characteristic (angular distance) of a beam's power distribution, which is crucial in designing beam sweeping test signals. The context highlights its use in evaluating beam separation and ensuring a fairly constant Total Radiated Power (TRP) for the used beams.
section_title: D.4	Design of beam sweeping test signal
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