![]() ![]() On the other hand, mmWave bands can exhibit lower interference because of the narrow wavelengths (narrow pencil-like beams in the order of several millimeters) and shorter range which reduces opportunities for encountering interfering signals. However, such lower bands can exhibit higher interference because of the wider coverage and longer wavelengths. ![]() For example, a low frequency band such as LTE/NR band 71 can help operators achieve wider coverage (because of lower pathloss exhibited by lower frequency signals). Additionally, different LTE/NR bands could exhibit different levels of interference. Interference is often worse at the cell-edge. There are different types of interference sources (and different naming) including: self-interference, multiple-access interference, inter-cell interference, intra-cell interference, co-channel interference (CCI), adjacent channel interference (ACI), etc. Signal quality is primarily affected by interference. LTE measurement report triggering A1 Serving becomes better than threshold A2 Serving becomes worse than threshold A3 Neighbour becomes offset better than PCell A4 Neighbour becomes better than threshold A5 PCell becomes worse than threshold1 and neighbour becomes better than threshold2 A6 Neighbour becomes offset better than SCell C1 CSI-RS resource becomes better than threshold C2 CSI-RS resource becomes offset better than reference CSI-RS resource B1 Inter RAT neighbour becomes better than threshold B2 PCell becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2 W1 WLAN becomes better than a threshold W2 All WLAN inside WLAN mobility set becomes worse than threshold1 and a WLAN outside WLAN mobility set becomes better than threshold2 W3 All WLAN inside WLAN mobility set becomes worse than a threshold V1 The channel busy ratio is above a threshold V2 The channel busy ratio is below a threshold Event configuration (36.While most users of cellular devices understand that “signal strength” is important for good cellular signal reception, most folks do not realize that “signal quality” is by far a more determinant of the performance of 4G LTE and 5G NR cellular devices. ![]()
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