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The Path to IP The right approach for your IP migration. (GrassValley) (IP…
The Path to IP The right approach for your IP migration. (GrassValley)
"Understanding exactly how and when IP technology will impact a given business model depends on your individual situation"
"IP technology is about adopting the two largest open standards in the world, Ether- net and Internet Protocol, into an environment that has traditionally been based on SDI technology. "
"How is IP technology changing broadcast television? How quickly will the technology progress? How will IP capabilities enhance various operational models?"
"Over the history of computing hardware, the number of transistors in a dense integrated circuit doubles approximately every two years." - Moore's Law
"The speed of traditional broadcast television technology, however, has not kept up with the accelerated network speeds and bandwidth. Why? Because Moore’s Law only applies when it makes business and economic sense to fund continuing technological development. Therefore, Moore’s Law favors investments with higher returns. In broadcast, at least so far, this hasn’t been the case."
"the rate at which IP technology accommodates more and more content is simply impossible to ignore"
"Adopting IP empowers broadcasters with scalable flexibility and speed that would be otherwise unaffordable were it not for the trillion dollar ecosystem driving the developments of IP technology."
"The question isn’t whether to get on, it’s how to get on while it’s moving so quickly."
"Making the Transition — A Four Pillared Approach"
Pillar 1: Gateways
" IP is a gradual transition — a migration."
"gateways are converters — between signal types (formats) and signal transport protocols"
"They range from the simple, such as a gateway from SDI to SMPTE 2022-6, to slightly more complex, such as SDI to JPEG 2000 to MPEG-2 TS. A third type of gateway would involve the receipt of data in SMPTE 2022-6, and converting it to AVB digital video (essentially, converting from one Internet Protocol to an- other Internet Protocol)."
"Gateways of this type are the only way to accommodate a gradual adoption of new signal transport standards and, even better, their use- ful lifetime is indefinite.
GrassValley Gateways
These gateway cards reside directly inside the same platform, which previ- ously housed only SDI signals, and convert and packetize real-time, uncompressed, baseband video using SMPTE 2022-6 protocol over 10 Gb/s Ethernet networks.
Pillar 2: SDN Integrated Control
"Signals and flows are characterized by bandwidth and format within the control system"
"QoS, VQoS and many other system functions just would not be possible in a blended IP/SDI workflow without this capability."
the combined technology infrastructure of SDI and COTS IP that will exist as you migrate IP into your workflow
Pegasus
Grass Valley’s SDN (Software Defined Networking)-based control ap- plication, known as Pegasus, is the key to a familiar, broadcast-centric control environment that enables a hybrid (SDI mixed with IP) work- flow that builds a bridge to the future.
controlling both SDI and IP simulta- neously.
Using SDN-based control is the simplest hybrid solution available.
Finally, the introduction of IP support into a broadcast workflow using SDN-based control inspires new levels of flexibility in further IP sup- port. Once the control layer is introduced (imagine not having to worry about SDI vs. IP when making future equipment purchase decisions), additional forays into the world of IP are greatly simplified.
Pillar 3: IP Product Line Support
"Without a complete ecosystem, full IP integration is not possible."
your operators is not an option. So, to whatever degree possible, IP support needs to be built into the product types that make up the existing, modern broadcast workflow.
Pillar 4: Live Production Technology
IP From Glass-to-Glass
"Camera, router, server, signal processing, production switcher, multi- viewer: this is the workflow chain that enables live production and is the engine that drives broadcast — Grass Valley refers to this critical solution set as “Glass-to-Glass.” The live-production signal process- ing chain."
"Processing video pixels and audio samples requires accurate timing of hun- dreds, sometimes thousands, of signals. This accuracy depends on source-timing the origination of signals and providing ultra-low latency signal propagation."
"live production this requirement"
"To enable smooth IP configurations, components in the workflow need to be built on open standards and prepared to interact well with technologies from multiple suppliers"
"IP technology outperforms SDI when multiple signals are aggregated on one cable."
" With SDI tie-lines there is only one signal per coax."
All points from this branch support that =
"only IP....can provide the creativity, flexibility and scalabil- ity for future advancements that the industry is already incorporating"
'Agility' The real value of IP
"the way that dynamic metadata is handled by IP tech- nologies powers creativity, through time-aware, data-rich applications that can’t be handled in SDI."
Data Centres
Todays
Tomorrows
Standards and Interoperability
In the IP transition, support for standards will be critical.
For example, SMPTE 2022-6, which defines IP-based protocols for the transport of full-bandwidth, real-time video, audio and ancillary signals, is a logical starting point.
As IP technology is more deeply adopted, there will be new standards.
Customer demand will also certainly drive standards. In either case, as the industry adopts key standards, interoperability is important for all products and an important factor for broadcasters to consider when making decisions about IP migration.
Underneath it all: The Belden Foundation
The foundation of any facility is the fiber, coax and cable manage- ment systems that interconnect the equipment
what previously would have been coax infrastructure has been transitioned to fiber and the increasing data rates associated with 4K/UHDTV, 8K, and be- yond, will likely accelerate this trend.
Coax Limitations and the Transition Path to IP
"coax cable .. shown to be capable of providing 12 Gb/s speeds, and SMPTE standards are being ratified for 12 Gb/s over coax at the time this paper is being written, for these data rates cable lengths less than the typical 100 meter benchmark of the broadcast industry are to be expected."
but as data rates continue to increase, the degradation in transmission distances over coax will remain a factor.
IP is a bidi- rectional signal and uses two fibers: one for transmitting and one for receiving. As part of managing higher data rates, very light mezzanine compression is a good option to reduce 12 Gb/s signals to 3 Gb/s, as one example. This signal would then be put into an IP wrapper and transported over Ethernet, typically over fiber.
Dual LC SFP+
converts electrons to photons, and vice versa
IP Infrastructure: Belden OIC
The primary benefits of fiber over coax are weight and bandwidth. The practical bandwidth of fiber is limited by the ability to convert between electrons and photons at very high speed.
As video data rates in- crease from 12 Gb/s to 24 and then 96 Gb/s over the next three to four years, fiber is the best way to ensure bandwidth capacity is available.
IP switch topologies use a leaf-and-spine connection scheme (also known as a one-to-one connected mesh). This is required for non- blocking switch capability. Connecting many 10 Gb/s fibers in this scheme can be time consuming and physically challenging to manage
To overcome this issue, Belden has developed a solution called an Optical Inter-Connect, or OIC. The OIC uses an optical shuffle to physically remap the 10 Gb/s signals into a more logical structure in which multiple fibers go to the same physical location. (Figure 8)
Conclusion
The media industry lives and dies by the axiom “Content is King.”
harnessing technology to enable new business models, while improving productivity and in- creasing efficiency can’t interfere with the fundamentals of your busi- ness. The gradual, multitiered approach described in this article is the key to meeting that goal.
