Performance characterization and call reliability diagnosis. Voice over lte volte esting fttx networks table of. This volte tutorial covers volte voice over lte basics, types of volte which include volte using imsvoip and volte using csfbsrvcc. Click download or read online button to get voice over lte volte book now. According to 3g patent platform 3gpp release 8, lte was. This book provides the exhaustive view to industryapproved technologies and standards behind the voice over lte volte. Pdf evolve to richer voice with voice over lte volte. Now, with lte long term evolution taking shape, the ims platform has been given a new role and a niche that will carry it a considerable distance into the future. Documents voice over long term evolution volte is the industryrecognised solution for providing a packet voice service, over ip via lte access technology. This feature uses the lte signal to send and receive calls, whereas before this feature, calls would use the 3g signal. Volte is specifically designed for 4g ltes allip network.
To facilitate voice communication, each volte call also. Hence to support voice over lte there are two options. Volte excels in most metrics such as audio quality, but its call reliability still lags. Volte launched in 125 networks in over 60 countries more than 0 volte enabled device models available volte subscriptions grew 3x in 2017 forecast 5. Frequently asked questions faqs volte and vowifi volte 1. A lightweight voice solution to 4g lte networks ucla cs. Although there are many over the top applications for carrying voice over an lte signal, volte is the method that is provided by operators. The following volte call flow describes the ims call setup and release.
Voice calls over lte are recognised as the industryagreed progression of voice services across mobile networks, deploying lte radio access technology. It stands for voice over lte, but what it really means is that before long, your voice calls are going to. Frequently asked questions faqs volte and vowifi volte. The big advantage of volte is that call quality is superior to 3g or 2g connections as far. Allowing you to evolve towards an allip core, ims is a highperforming core controller for lte networks providing volte, vowifi and multimedia services for multiple devices. Key to your expansion ibasis internati onal volte service provides a costeff ecti ve, highquality and seamless. Voice over lte volte esting fttx networks featuring pons systems sdfsdf table of contents 1. It offers faster speeds than the previous two, thus making it easier and faster to transfer data over the network. Voice over lte volte uses the lte network to make higher quality voice calls. To enable lte calls on this account, contact your carrier. Voice over lte volte and voice over wifi vowifi solution. Volte uses ims technology, which provides a common platform to provide an enriched call experience by also deploying conversational video vilte video over lte and rcsbased rich communication services. It carries voice traffic in packets over the ipbased lte network, no longer through an dedicated circuit.
It includes background information on the standardization process, and the commercial implications. Volte voice over lte is the next generation of voice service for your phone. Although volte demands a complete overhaul of service infrastructures, it is a fundamental requirement for mobile network operators. The implementation of volte solution to deliver voice over internet protocol in lte network is totally dependent on ims ip multimedia subsystem. The phone you are calling also needs to work with volte. It gives examples of different bearers being established and how the correct qos is.
Voice for the 4g lte subscriber voice options voice over lte volte circuit switched fallback csfb simultaneous voice and lte sv lte volga, voice over lte via gan 11. Lte is all ip based network and mainly designed for internetdata applications. Volte is an abbreviation and stands for voice over lte. Quality of service, qos, telephony, voice, volte, 4g, lte. Volte can carry voice calls over sprints lte network instead of our traditional wireless voice network. Lte 4g network uses volte voice over lte as the technical solution to carry out voice calls over ip. Status and migration trends lav gupta, lavgupta at wustl. Volte stands for voice over lte and its more or less exactly what it says on the tin. When volte is deployed, phones will not need to fallback to 3g for voice calls. Smartphones require both good quality voice and high speed broadband data. This can happen with some account types, including business lines, and on some carriers. Evolve to richer voice with voice over lte volte contents.
Volte voice over lte as specified in recommendation ir. Lte is great for packet data connectivity, such as the internet. According to 3g patent platform 3gpp release 8, lte was introduced providing higher access rates and. Enabling volte on a cellular network that hasnt been certified by the carrier for volte might impact battery life, calls, text, messages, voicemail, and cellular data. From rtp jitter perspective, figure 6 illustrates the pdf and. Volte stands for voice over lte longterm evolution.
Volte stands for voice over lte, or voice over long term evolution. We tend to think of 4g as mostly being about downloading, streaming and web browsing, and indeed thats primarily what its been used for so far, but it. Circuit switched fallback csfb the circuit switched fallback technique is the widely accepted solution for voice and messaging services within lte. Voice and sms in lte white paper this white paper summarizes the technology options for supporting voice and short message service sms in lte, including circuit switched fallback csfb, sms over sgs, and voice over lte volte. It is based on the ip multimedia subsystem ims network, with specific profiles for control and media planes of voice service on the lte wireless broadband service defined by gsma in prd ir. The volte technology platform allows users with a compatible phone to place and receive calls over the telkom lte network instead of the traditional voice network. Volte, circuit switched fall back, csfb, voice over lte via generic access, volga, single. Raj jain download abstract rapid increase in data traffic over cellular network is necessitating deployment of long term evolution lte in the cellular. Volte voice over lte is the next evolution in wireless calling.
It is a technology that allows users with compatible smartphones to experience superior quality, high definition voice calling with quicker. Ims brings together voice features such as authentication, server authorisation, call control, routing, interoperability with pstn, billing etc. Voice over longterm evolution volte is a standard highspeed wireless communication for mobile phones and data terminals, including internet of things. Pdf volte performance analysis and evaluation in real. The goal of volte is to emulate the services of the. The voice service over lte is becoming increasingly important when the smartphone penetration is increasing rapidly. Voice over lte, volte is the method of sending voice over an lte bearer. Describes the technological solutions and standards which will enable the migration of voice and sms services over to lte epc networks. This application note explains a solution for testing voice over lte volte phones that is wellsuited for lte mobile phone developers, test engineers, and test lab personnel. Volte or voice over lte and its more or less exactly.
Volte systems voicepac will also offer customers the choice to deploy multiplay solutions volte systems whitepaper series the reality of volte voice and data over lte that deliver combined voice datafax over any communications medium including lte. Make phone calls with voice over lte volte apple support. Provide your customers with voice over lte volte, voice over wifi vowifi and multimedia services while maintaining a profitable network. This site is like a library, use search box in the widget to get ebook that you want. Using voice over lte volte click each step to see the action, click the picture or use the arrow keys. Before we discuss volte, we should better have a look at lte, lte is a 4g technology while making phone calls using this 4g technology is called voice over lte in short volte. Utilising ims technology, it is a digital packet voice service that is delivered over ip via an lte access network. Before lte, mobile networks used cs domain for voice and sms communication. Voice over lte volte originating call voice over lte volte is the standard for voice call setup in lte networks. Now coming back to your question, what makes this technology free of. Wifi calling and voice over lte phones are now coming equipped with a feature called voice over lte or volte for short.
Volte used substantially fewer network resources than skype voice, which in turn resulted in longer estimated device battery life for the subscriber and a more efficient network for csps when leaving lte coverage, volte calls were successfully handed over to 3g circuitswitched voice, ensuring calls continued without interruption. Its voice calls over a 4g lte network, rather than the 2g or 3g connections which are usually used. To access the recommendation, type the url in the address. This fact is vital because even as the operators connectivity and content services. But it faces many challenges for traditional voice and sms communication. Volte will provide superior voice quality and allow you to browse the internet and use datadriven apps while on.