Maximizing the Quality of Your IPTV Service


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Maximizing the Quality of Your IPTV Service

  1. 1. Maximizing the Quality of Your IPTV Service Why it’s critical for your company’s success
  2. 2. Introduction As IPTV deployments grow in number and maturity, operators are beginning to understand the complexities and inherent challenges of their networks. They are also facing a major problem!  Many customers are disappointed with the quality of their IPTV service due to video artifacts such as pixilation and jittering, which degrade the viewing experience.  These artifacts are caused by a variety of network impairments. The result - a poor Quality of Experience (QoE) which leads to decreased customer satisfaction and increased customer complaints through the call center.   In order for an IPTV operator to be successful, they must solve the QoE problems that are plaguing their network.  Solving this problem is crucial to improving customer satisfaction, reducing customer service costs, and reducing customer churn. These are important goals for any successful IPTV initiative.   Most Quality of Experience problems are caused by packet loss , a normal occurrence on any IP network. By proactively protecting the network against the effects of packet loss, IPTV providers can dramatically improve QoE, resulting in happier, loyal customers.   A recent study found that QoE-related issues accounted for more than 25% of the obstacles for IPTV adoption
  3. 3. <ul><li>Why does loss happen? </li></ul><ul><li>Packet loss events happen for a multitude of reasons in a variety of different locations, and that is a major component of the problem. There is simply no way for an IPTV operator to protect the network against all the possible causes and locations of packet loss. In addition, many packet loss events occur within the “last mile” of the network, making the problem even more difficult to detect and address. Here are just some examples of why packet loss occurs: </li></ul><ul><ul><li>Environmental effects such as in home appliances and electrical public transport systems. </li></ul></ul><ul><ul><li>Congestion – typically at prime viewing times. </li></ul></ul><ul><ul><li>Bad in-home wiring. </li></ul></ul><ul><ul><li>Heterogeneous network equipment </li></ul></ul><ul><ul><li>Out of sequence packets. </li></ul></ul><ul><ul><li>Duplicate packets. </li></ul></ul><ul><ul><li>Core network issues (such as lost network links, route convergence, and similar) </li></ul></ul>
  4. 4. <ul><li>The Business Case for Improving Quality of Experience </li></ul><ul><li>The business case for improving customer’s Quality of Experience (QoE) by eliminating video and audio degradation caused by packet loss is obvious. Listed below are just some of the results when an IPTV provider offers a poor Quality of Service: </li></ul><ul><ul><li>Decreased customer satisfaction </li></ul></ul><ul><ul><li>Increased customer complaint call volumes into the customer service center </li></ul></ul><ul><ul><li>Increased number of customer service calls (“truck rolls”) to the home </li></ul></ul><ul><ul><li>Lower perceived value (customers don’t want to pay market rates for a poor service). </li></ul></ul><ul><ul><li>Increased churn, as unsatisfied subscribers migrate to other operators and take other services (data, phone, wireless) with them </li></ul></ul><ul><ul><li>Inability to use existing in-home wiring (power or coax) leading to higher installation costs </li></ul></ul><ul><ul><li>Increased network equipment costs </li></ul></ul>
  5. 5. <ul><li>What’s the BEST Way to Solve This Problem? </li></ul><ul><li>To truly protect your network against packet loss you must proactively protect the video stream that is being received by the customer and that proactive solution must fix any loss before it impacts the customer so that quality is always preserved. </li></ul><ul><li>The simplest, fastest and lowest cost way of doing this is to use an application-layer forward error correction (AL-FEC.) solution., such as Digital Fountain’s ToughStream TM . AL-FEC solutions like ToughStream recover lost or missing packets by using an algorithm to generate repair data that is sent along with the original video content, which the receiver then uses to recover lost packets. </li></ul><ul><li>AL-FEC solutions offer the following benefits: </li></ul><ul><li>Scalability—once installed in a headend, it supports an unlimited number of receivers. Fixes all loss types, regardless of single or multiple event or where it comes from </li></ul><ul><li>Predictable resourcing—network overhead and STB resource requirements can be easily predicted. </li></ul><ul><li>Standards-based—all AL-FEC options have been standardized, so there is less risk of future changes and interoperability issues. </li></ul><ul><li>Configurable network overhead, with the granularity of one IP packet </li></ul><ul><li>Configurable latency, to optimize channel change times and network overhead </li></ul><ul><li>Backwards-compatible option, for easier deployment and future-proofing </li></ul><ul><li>RTP not required, eliminating the need to change the network </li></ul>