Presented by Prof. Andy Sutton, Principal Network Architect within BT Architecture and Strategy team in the CW (Cambridge Wireless) Heritage SIG (#CWHeritage) event 'Time for Telecoms' on 16 March 2018 at the Science Museum, London.
*** Shared with Permission ***
2. 1 British Telecommunications plc 2017
• GSM radio interface
• Nokia DF12 BTS
• Base station oscillator modules
• Pulse Code Modulation
• E1 frame
• GSM terrestrial interfaces
• Synchronisation Supply Unit
• Add some 3G with UMTS and WCDMA
• Implications of ATM and SDH
• Converged network sync solution
• 4G with LTE, LTE-A, LTE-A-Pro
• Sync for 4G and beyond…
• Summary
Contents
29. 28 British Telecommunications plc 2017
Summary
• Frequency synchronisation is as essential to the
operation of state of the art 4G and 5G networks as it
was to 2G and 3G
• Advanced radio features and modes of operation
require the addition of phase synchronisation to
ensure time alignment between adjacent cell sites
• Synchronisation networks must be robust and resilient
as they underpin network operation and performance
• SyncE and PTP are important network synchronisation
technologies to enable our mobile future
• 5G will drive extensive use of PTP based phase sync
and likely many more GNSS deployments in support of
TDD operation
• As radio access frequency bands increase to deliver
ever higher peak and average data rates with lower
latency and better performance, phase sync becomes
ever more critical as an integral component of the E2E
solution