Posts tagged ‘DRA’

Why do you need a Diameter Routing Agent in a VoLTE deployment? (Part II)

This is Part II of Peter Nas’ Blog Entry: Other DRA added-value in VoLTE

There’s additional value to the fundamental session binding functionality of a DRA. A DRA can enable optimal call management ensuring higher quality-of-service VoLTE calls. For instance, think of all the different vendors’ equipment that is needed to exchange Diameter Gx and Rx signaling. One example is when the LTE PGW has a different Gx implementation than the PCRF. In turn that PCRF can have a different Diameter Rx implementation than the IMS’s P-CSCF node. Typically inside an operator’s network, there will be various vendors for LTE, PCRF and IMS core network elements. And this is the norm in roaming use cases where the visited LTE network is out of control (meaning a different vendor) than the home IMS network, where the P-CSCF (and other elements) will be involved.


Why do you need a Diameter Routing Agent in a VoLTE deployment? (Part I)

Peter Nas, Senior Solution Architect, F5 Networks

Peter Nas, Senior Solution Architect, F5 Networks

This article was written by Peter Nas, Senior Solution Architect for the Traffix SDC, F5 Networks

Operators have begun to get more and more serious around deploying VoLTE (Voice over LTE) in their networks. Since the announcements of VoLTE services from some Korean and US operators, others, particularly in Asia, North America and EMEA, have launched or are about to launch VoLTE (see GSA announcement of 17th Sep 2014: 71 operators in 36 countries investing in VoLTE deployments, studies or trials, 10 operators commercially launched HD voice using VoLTE). More often than not, operators use a Diameter Routing Agent (DRA) to support correct routing and control of the Diameter signaling related to VoLTE.


Interview: Technical Sales Manager,Mobile Services, Telenor: “It is important to measure the QoS experience.”

Torbjorn A Petterson_documents

Torbjorn Pettersson, Technical Sales Manager – Mobile Services, Telenor, Sweden

What major developments have there been with regards to the LTE industry in your region this past year?

The main developments this past year have been the operators launching their LTE projects as well as LTE roaming projects. A major development was the establishing of Diameter Routing Agents (DRA) to enhance interoperability, enable global roaming coverage and to greatly improve network security.

What are the chief technical challenges you are facing?

The main challenges are to ensure DRA is correctly implemented, dealing with Circuit Switched fall-back issues and to enable operators to connect to an LTE signalling partner (such as Telenor Global Services).

What are the key techniques for network optimisation in LTE and what effect can it have on the customer experience?

In our experience it is important to measure the QoS experience in order to improve the customer experience of downloading, uploading and using new LTE handsets.

Do you believe that RCS services can genuinely help the industry compete with OTT?

RCS will bring great opportunities since it will bridge the gaps between the islands of different OTT applications. It is also important that operators put great effort into launching RCS globally on new smartphones and handsets.

Pricing for LTE is a controversial subject. Are operators getting it right?

This is a challenging area with operators competing with each other locally and also for roaming pricing. In European countries pricing is driven by the EU regulation but outside EU it is up to the operators to agree on pricing that is affordable for customers.

What do you think will be the most exciting new development in LTE in 2013?

For me it will be operators launching global roaming LTE data services.

What impact does LTE have on your backhaul strategy and technology choices?

It requires greater planning in terms of security, diameter routing and GTP2 (Global Tunnelling Protocol data traffic version 2) traffic, capacity and QoS.

The LTE World Summit, the premier 4G event for the telecoms industry, is taking place on the 24th-26th June 2013, at the Amsterdam RAI, Netherlands. Click here to download a flyer for the event.

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