As cable operators continue to look at facing the ever-expanding onslaught of data demand from subscribers, they should ask ourselves, “Is there a far better option to do things?” they all have heard the unofficial definition of “insanity” as “doing the same factor time and again and anticipating a distinct outcomes,” they will’t simply keep going forward blindly doing issues like node splits continually because it is not a sustainable follow doing it the manner it has been accomplished for the ultimate 5-10 years .
Invoking a new concept system
Step lower back and examine the issues we're dealing with and what they can in fact alternate. So commonly, the trade receives so caught up within the low degree “geek component” of all of the awesome items and technologies developed, that they overlook to ask ourselves, “What problem am I definitely solving? Am I deploying this since it is new and funky or does it make experience to resolve an exact difficulty now or one they recognize is coming in the near-time period future?”
a kind of applied sciences with lots of buzz at the moment is far flung PHY (RPHY). it is one in every of a couple of competing technologies that reside within the arena of cable dispensed access Architectures (DAA). At its most fundamental, root definition, RPHY takes the QAM modulation/demodulation portion of the CMTS and separates it to a vicinity outside of the CMTS. This function will now usually be dealt with without delay in an HFC node within the container or a “shelf” classification unit located in a hub or cabinet. The connection between the CMTS and the far flung PHY gadget (RPD) is average Ethernet. however they don't seem to be here to speak concerning the vast know-how that makes up RPHY. extra importantly, they deserve to focus on what the benefits are and what complications it may possibly resolve.
it is important to first delivery through deciding upon one of the greater pervasive issues that an HFC operator is at present facing. The no 1 question is “How will I take care of the continued, big enlargement of information bandwidth?” There isn't a single operator within the US it's resistant to coping with this, however how the issue manifests for each and every operator may also be very distinctive.
let us explain
Take the case of a rural operator that has dissimilar serving territories coated by assorted Headends/hub sites. usually, every of these sites would come to be with its personal CMTS because of distance limitations of RF Optics performance and the DOCSIS protocol. repeatedly, during the past, they may had been in a position to get away with smaller CMTS at these areas as a result of a decrease bandwidth demand. If they wish to beginning slowing down node splits with the aid of employing ahead-searching expertise this is extra productive with RF spectrum like DOCSIS 3.1, this may also require deploying a fresh, potentially bigger CMTS it's able to the protocol. This might become somewhat costly. What if in its place, they could centralize the capabilities of the CMTS and use essentially any category of IP community to interconnect to the websites so as produce the DOCSIS carriers by means of a RPHY shelf? If they can join the websites to an current community, leased wavelength or even an information circuit, they will run far flung PHY. From this illustration on my own, they are able to see merits of hardware discount, vigour savings, aid charge discount and operational ease of handiest having a single CMTS. no longer to mention attaining the purpose of deploying the greater forward-searching technologies that you just set out to do which might also have otherwise been too costly.
On good of this instance, listed here are a few greater merits that they will see from far off PHY:
a lot of these benefits were realized lately by way of a client of Cisco and CCI programs that deployed a fully converged CMTS and video deployment (CCAP) over remote PHY into a serving territory that mandatory to now have 1 Gbps/s functions applying DOCSIS three.1. This operator vital to give all their services for voice, video, and information over a single leased circuit. This proved to be a perfect software for far flung PHY because it allowed the operator to garner a good deal more advantageous efficiency in density of their CMTS, minimized the footprint of apparatus vital to be deployed in the serving territory and raise the modulation profile of the DOCSIS three.1 carriers that had been applied, for that reason giving the operator more records throughput in the identical quantity of RF spectrum.
CCI methods worked with the operator from beginning to end on the mission, beginning with taking note of the needs to understand the difficulty to solve. It became instantly determined that faraway PHY would provide the operator the most desirable technical and economic answer for no longer simplest this possibility, however additionally for the long run for boom. CCI methods then fully designed and procured the entire end to conclusion answer including the CMTS, IP switching architecture, video ingestion and birth, outside Plant nodes and passives (N+0), and any OSP amenities essential like cupboards and powering. relocating to the start part, CCI deployed the complete solution while working very intently with the customer body of workers in order that they could be in a position to right now take over the solution for each day operations.
From an answer standpoint, CCI and the operator relied on diverse platforms from Cisco. The Cisco cBR-8 changed into used as the CMTS platform along with the GS7000 node to provide the faraway PHY delivery within the plant. Cisco switching become utilized for aggregation of the Ethernet network. CCI also built-in dissimilar different third celebration gadgets to complete the entire solution from Headend to outdoor plant.
Do you are looking to know greater about the culmination of example offered above? CCI and Cisco may be on-hand all week at the SCTE Cable Tec Expo in Denver, CO to discuss RPHY options with operators. discuss with booth #1319 to communicate at once with blog writer, Todd Gingrass, related to your network’s challenges and future demands and more desirable remember what answer is correct for you.