RF signals are measured in units of “dBm”, with a signal of 0 dBm being the strongest, and signals of -100dBm and below being the weakest. As a general rule, VoWiFi should maintain:
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A minimum signal strength threshold of at least -67dBm.
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An SNR (Signal to Noise Ratio) of 25dB.
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Each access point creates a coverage cell. These coverage cells should overlap one another by 10 to 15% in areas where roaming may occur. In these overlapping areas a minimum of -65dBm should be received on the Data applications by at least 2 access points to provide smooth roaming.
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A MCS 7/15 64-QAM 5/6 should be maintained on the client devices
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