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Over the previous 12 to 18 months, the Cable business has been put to the take a look at, and are available out shining. As tens of millions of individuals tailored to working and studying from residence, cable networks held up and enabled the unprecedented transition. However the transition was not with out its challenges. As extra clients consumed bandwidth all through the day, MSOs had been confronted with congestion upstream. Nobody likes to have their video freeze up throughout an essential video name, so operators labored tirelessly to separate nodes and thus add extra upstream capability with conventional, low-split (42 MHz) merchandise. The chart under illustrates simply how a lot bandwidth development was skilled, notably within the upstream, over a 17-month interval.
Now that issues are stabilizing, MSOs need to the long run. So, what’s subsequent? The place are the bottlenecks, and what community capabilities are wanted to maintain subscribers from churning? That could be a set of sophisticated questions! Operators have been telling us that attending to 1Gbs upstream speeds is the following precedence, matched with a 1 or 2Gbs downstream, however how you can get there’s a matter of debate. The market is fractured greater than ever in its architectural course. Can we merely prolong the present built-in CCAP (iCCAP) to a 204 MHz break up? Transfer to Distributed Entry Structure (DAA) and Distant PHY (RPHY)? Look ahead to Versatile MAC Structure (FMA)? When will DOCSIS 4.0 be able to deploy, and in what taste, Full-duplex DOCSIS (FDX) or Prolonged Spectrum DOCSIS (ESD)? Cisco’s personal John Chapman recognized the problem completely in an interview with Fierce Telecom Cisco exec says too many DOCSIS choices are clouding cable’s future.
Whereas the long-range future on which path to take stays cloudy, the options essential to get to 1Gbs symmetrical companies can be found right this moment. By planning for a mid (85 MHz) or excessive (204 MHz) break up, and deploying D3.1 OFDMA, operators can notice the promise of symmetrical speeds within the vary of 300Mbs to 1Gbs. Determine 1 under reveals the whole mixture capability for 85 MHz whereas Determine 2 reveals the whole mixture capability for a 204 MHz deployment.
Whereas implementing a break up change within the community has apparent bandwidth positive factors, it does include its personal set of challenges. I just lately participated in a webinar with business consultants Jason Miller and John Downey the place they coated the problems, issues, and finest practices for deploying these options in higher element. Yow will discover a hyperlink to the Webex on-demand replay on the Cisco Data Community right here. I believe you’ll discover it to be extraordinarily useful in case you are contemplating a mid or excessive break up implementation within the close to future. Symmetrical and multi-gigabit speeds could also be coming to your private home quickly!
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