That is why my target is to <just> qualify for being a CATV operator (and my target spots are the same, less then 15 channels, all but one is OTA).
Using multicast, all say, 20 channels will head out, no extra use per TV and no VoD. (for the wireless network). This also assumes its a dedicated sector for iptv or has the margin to support both. The DSL network OTOH, can support 2 to 5 channels per link, so as long as you have the BW into the ATM and then out to the remote dslams, your ok for making it a pure VoD channel setup. Only stream the ones needed when needed and it will reduce per CPE use with a over all higher network use. Paolo Di Francesco wrote: > >> We successfuly transmitted all of our programming over MikroTik wireless >> links without any problems. Including HD. > > > I have one doubt. Let's say that one SD/HD channel takes 1Mbps (just to > make math simple) and let's say that the number of total available > channel is 50. (the total number or channel is not a real problem to me, > but let's say the number is very high, 50 or 100) > Multicast can help a lot (if it's broadcast not video on demand) but my > doubt is about the number of simultaneous IPTV channels per sector > antenna (i.e. per radio channel). If you have 20 customers on the same > sector, each one of them watching a different TV channel you need 20Mbps > per sector + the normal internet traffic. Let's say 30Mbps per sector. > Or you can think to use a second sector IF the area is not so crowded. > So the more successful is the service, the more problem you have on the > radio channel (access network). > > So my concern is not on the backbone, it is on the access network. > Another point is: what happens when you experience interference in the > area? Web surfing can be acceptable with some interference, but IPTV is > a pain. Personally I would feel safer in licensed frequencies, but this > is my feeling, comments are welcome also about this. > > Other doubt: one user means maximum one channel per user? Or the same > user can watch multiple IPTV channels at the same time? (e.g. I have 2 > tv, so I put two IPTV boxes kids watch Disney, I watch football) > > Any wireless operator that is massively using IPTV wants to comment? > > Thank you > > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
