Densification is integral to 5G for meeting the key objectives of high data rates, greatly increased capacity and to some extent ultra-low latency. Higher frequency radiation provides the capacity and bit rate, but in turn suffers more rapid degradation and requires near line of sight. Low latency requires edge computing and also close proximity to devices for some of the more extreme use cases. So while 4G RANs were about 10 times denser than their 3G predecessors, 5G will require a similar increase in density. This will involve a mix of small and macro cells, along with in-building developments and also integration with other wireless technologies, especially WiFi. Indeed, as we have argued before, presentation of WiFi and cellular as…