VoLTE Seminar Report PDF PPT

Voice over LTE, VoLTE Technology Definition

VoLTE, Voice over LTE is an IMS-based specification. Adopting this approach, it enables the system to be integrated with the suite of applications that will become available on LTE. When 3GPP started designing the LTE system, prime focus was to create a system which can achieve high data throughput with low latency and at the same time has the capability to guarantee an end to end Quality of Service(QoS). LTE is an all IP network and during the initial phases of its development, the ability to carry traditional service like the voice was not given much importance. Therefore, for LTE networks to carry traditional circuit-switched voice calls, a different solution was required. This solution to carry voice over IP in LTE networks is commonly known as “VoLTE”. Basically VoLTE systems covert voice into the data stream, which is then transmitted using the data connection.
In the VoLTE solution with voice services now sharing the data pipe with other data-enabled services like web browsing, video streaming, and social media, the ability to manage the speed, quality and volume of data along with associated signaling is critical for providing a positively differentiated user experience. This is achievable in LTE network by way of exploiting capabilities of the IMS (IP Multimedia System) infrastructure, which provides a definite framework for ensuring end-to-end QoS for different applications including voice. 

VoLTE Architecture Diagram



Differences between VoIP and VoLTE

TECHNOLOGY
VOIP
VOLTE
Meaning
Voice over IP
Voice over LTE network
Network
2G/3G
4G
Created
1990s
2000s
Audience
Web, VoIP phones
Modern smartphones
Reliability
Often drops packets of data under stress
Higher bandwidth and quality
Coverage
Widespread
4G still rolling out
Therefore, the basic difference between VoLTE and VoIP is that while VoIP is best effort service, VoLTE has the capability to ensure end-to-end QoS.


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