Page 252 - Big data - Concept and application for telecommunications

5 Big data - Concept and application for telecommunications

Data analytics enable MNOs to manage networks and provide services to customers in a systematic manner;
not only the network measurements, but also the application/service status for each region can be monitored
and analysed over time.
The big-data plane in bDDN is capable of analysing big data to identify problems, and to decide what or how
to optimize the appropriate level (e.g., the user, cell or service). The improvement measures based on
optimization results are then implemented by the control functions in the RAN. Moreover, user-level
optimization can be performed. For users closely located in the same cell, optimization can be customized
for each user depending on their service class. Furthermore, the big-data plane functions can predict traffic
variations either in a local area or over the network coverage and eventually help to improve network and
user performance.

7.2 Big-data-driven networking in data centre networks

Data centres have gained popularity among service providers and network operators. This has been a cause
of concern for data centre networks because these applications require high-bandwidth low-latency low-
energy-consumption networks.

bDDN is a promising solution for maximal resource utilization in data centres.
Figure 7-2 depicts an architecture of intra- and inter-data-centre networks with bDDN, which also includes
three parts: the infrastructure; big-data plane; and network controller. In the infrastructure, there are
switches and servers in the intra-data-centre network. The different data centres are connected through
routers over an IP network, which forms the intra-data-centre network. In the control layer, there are several
network controllers to manage the intra-data-centre switches or the inter-data-centre routers. The data
processing modules schedule data processing. All network controllers are controlled by a single network
controller, while all data processing modules are controlled by a big-data plane of bDDN.

The network controller and data processing of bDDN are regarded as a hybrid controller, which is the ''brain''
of the network.

The big-data plane in bDDN is responsible for collecting all data from server and network device (switch and
router). Through the analytics of these big data, bDDN can get the information about application
characteristics and network conditions.

The bDDN can provide dynamic bandwidth adjustment, QoS policy and security policy for the application.

244 Network and infrastructure