List of Abbreviation and Acronyms xvii
QoE
Quality of Experience
QoS
Quality of Service
ODL
OpenDayLight
RAN
Radio access networks
RNC
Radio network controller
RRC
Radio resource control
SaaS
Software-as-a-Service
SDN
Software defined networking
SGSN
Serving GPRS support node
SGW
Serving gateway
SLA
Service-level agreement
SONET
Synchronous optical networking
SP
Service provider
SSL
Secure sockets layer
TCO
Total cost of ownership
UE
User equipment
UTRAN
Universal terrestrial radio access
vEPC
virtualized EPC
VIM
Virtualized infrastructure management
vIMS
virtualized IMS
VLAN
Virtual area network
VLR
Visitor location register
VNF
virtual network functions
vNIC
virtualized NIC
VoIP
Voice over IP
VPN
Virtual private network
VSN
Virtual sharing network
WAN
Wide area network
WiFi
Wireless fidelity
XaaS
X-as-a-Service