The evolution of LTE and advent of 5G networks increases further the bandwidth requirements for RAN. In parallel, the deployment of Centralized RAN architecture raises new challenges on the FrontHaul network. The inflexibility of the legacy CPRI is the primary challenge to Virtualized RAN deployments, and there is currently a strong trend towards the use of packetized transport methods, together with flexible split RAN based architectures. Functional splits within the real-time functions of the RAN have very stringent requirements on latency and jitter. This paper analyzes the jitter produced in the switching nodes of the FrontHaul network, and proposes dimensioning rules.
[1]
Muhammad Ali Imran,et al.
5G Backhaul Challenges and Emerging Research Directions: A Survey
,
2016,
IEEE Access.
[2]
J. Kingman.
A martingale inequality in the theory of queues
,
1964
.
[3]
Toktam Mahmoodi,et al.
On the Feasibility of MAC and PHY Split in Cloud RAN
,
2017,
2017 IEEE Wireless Communications and Networking Conference (WCNC).
[4]
Frank Schaich,et al.
Quantitative analysis of split base station processing and determination of advantageous architectures for LTE
,
2013,
Bell Labs Technical Journal.
[5]
Guidelines for LTE Backhaul Traffi c Estimation
,
2011
.