Measuring IPTV QOS (Quality Of Service)

IPTV QOS is a matter that has been a confusing concern for a lot of businesses, let’s clear up.

Quality Of Assistance, being something new oftens makes people automatically think of using pre-existing description techniques. This basic kick off point for QOS measurement is where almost all of the distress is generated. lista iptv paga

In the same way that whenever companies commenced moving from Advertising agency to digital broadcast signs, the natural tendency of the existing engineers was going to want to measure the new digital signal by converting it back to analogue and then using their existing equipment. IPTV QOS has caused a lot of the same methodology, where engineers with a network background want to evaluate network statistics, and technical engineers with a video backdrop want to measure online video statistics. The former (network engineers) can happily take their measurements from the existing network infrastructure, but get no knowledge about what packets on the network relate to what video signals. The online video people want to convert the IPTV signal back again into its digital online video format (converting it from IP to Video), which really misses the actual that all you’re really discovering is how well the switching device works (a part of test equipment defintely won’t be comparable to the way a STB (set top box) would decode the signal. Thus, you have two separate approaches to the same problem – neither of which is absolutely ideal.

Now, there CAN BE a place for existing test equipment (network test equipment is perfect for data traffic as it always was, and Transport Stream (digital video) analysers are great at your Head-End (where the video content originates) as a way to validate that the video into the IP network was good), so it’s not time to dispose of it, it’s just not the right tool for IPTV QOS.
With those remarks dealt with we can move forward (it’s difficult to move when you’ve still got one foot in your old mindset).

Depending on who you are, you could perfectly be concerned with just one part of an IPTV system or the complete system, so we’ll break it into the core problem and what meaning at each place in the network (we’ll assign the network 4 test factors: 1) Head End 2) Core Network 3) Network Edge 4) Customer Home).

1) Head End.

This kind of might concern you if you are in charge of creating, providing, or acquiring online video from a Head End.

A Head End can consist of anything from professional video encoders to VOD Servers (Video About Demand), and could maintain one of many online video formats, compression types, bitrates etc. They are often Unicast or Multicast, UDP, RTP or a proprietary mechanism (As in the case of MSTV).

Whatever the situation, it’s a good idea for taking steps to ensure that the top End is robust and the online video encoding devices are reliable. A problem at the Head End influences everyone down the line, straight to the customer. (we’ll assume that various ‘redundant’ systems are in location to avoid this type of problem where possible)

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