The promise of the 5G ‘Tactile Internet’ depends upon a high-density programmable RAN.  Cell disaggregation allows more efficient separation of Remote Radio Head (RRH) and Baseband Unit (BBU) functions.  Small-cell Access Points help achieve deep wireless capillarity.

2.1.1-Cloud-RAN.png

However, by separating RRH from BBU, stringent latency and synchronization budgets are now of greater concern.  Fronthaul fabric must support 5G’s incredibly high demands on BER, frequency, delay, and jitter.  Careful functional splitting must be engineered and continuously groomed.

The coordination of a heterogeneous and highly disaggregated RAN requires a new generation of fine-grained, real-time automation.  SONAR4 flexibly scales with the 5G Edge, providing instant full-stack feedback to wireless network control functions.