Thursday, January 4, 2018
Fort Collins Colo. to Build Own Gigabit Network
Friday, April 17, 2015
Antitrust Lawyers Lean Towards Blocking Comcast Acquisition of Time Warner Cable
That is likely to be too great a degree of concentration for antitrust lawyers.
Monday, April 13, 2015
Will FCC Allow Massive Merger to Protect Net Neutrality Gains?
So might the FCC try to protect some net neutrality gains by sanctioning a merger that will violate most of the market share rules the FCC and Dept. of Justice normally apply when screening and evaluating mergers at the top of telecom markets?
Wednesday, January 18, 2017
Verizon Buying Comcast or Charter--Absent Huge Divestitures--Would Not Pass Horizontal Antitrust Review
It all seems too complex, too likely to draw antitrust rejection, to be a likely outcome.
Thursday, April 2, 2015
Comcast to Ditch HFC for FTTH for 2 Gbps
It appears that Comcast will use a fiber-to-the-home architecture to provide the service, ditching the hybrid fiber coax network for the first time in a mass consumer application.
That doesn't mean Comcast is abandoning HFC for most of its customers, at most locations. Much hinges on the price, and how many consumers are willing to pay what it will take to get the 2-Gbps service. One suspects that is a rather low number.
The new service will require replacing HFC connections with all-fiber access, and Comcast, as well as other cable TV operators, will resist "rip and replace" to the greatest extent possible.
So, in a sense, Comcast might reasonably expect that a relatively small percentage of consumers actually will opt for the service, which will require overlaying new optical fiber drops from existing optical nodes.
But it is a watershed moment, as Comcast would, for the first time, use FTTH as its consumer access network, at least for some customers, at some locations.
Comcast has suggested it will potentially reach 18 million of some 21 million homes, as 18 million Comcast consumers live within a third of a mile of an optical node.
Friday, November 18, 2022
Comcast Expects 10-Gbps Downstream Upgrade to Cost "Less than $200 Per Passing"
Comcast says it can initially upgrade its network to eventually handle symmetrical 10-Gbps internet access (supporting 10 Gbps initially) for “less than $200 a home passed,” according to Elad Nafshi, Comcast EVP and chief network officer.
It is a nuanced statement.
That initial upgrade cost includes revamping networks from low-split to mid-split, including changes to active and passive network elements when necessary to support an upgrade to DOCSIS 4.0 10-Gbps downstream bandwidth. Upstream will increase to perhaps 1 Gbps.
Significantly, Comcast’s initial deployment does not require full fiber distribution, but can accommodate as many as four amplifiers in cascade.
That means the upgrade to 10-Gbps downstream service can be done without upgrading the whole network to fiber, which uses passive coaxial cable only for the last 100 feet or so of drop cable.
Upgrading to symmetrical 10-Gbps service will require replacing all the radio frequency amplifiers. Typically, Comcast has built out fiber to an optical node, then delivered signals to home using a string (cascade) of up to four amplifiers running on coaxial cable.
In the first stage of DOCSIS 4.0 deployment, most of Comcast’s facilities can continue to operate with fiber distribution to a node, then retain as many as four RF amplifiers for service to homes. There are huge cost implications for retaining that capability, since Comcast can continue to use the in-place amplifiers and coaxial cable.
Future “Node + 0 amplifier” networks will transition to Full-Duplex (FDX) DOCSIS, to significantly increase the upstream bandwidth to multi-gigabit speeds, such as symmetrical 10-Gbps service. But that also will require deploying a full fiber network, using coaxial cable only for the drops.
The first step will be a shift to a 5-MHz to 204-MHz upstream bandwidth and 1218 MHz downstream bandwidth, supporting a 1 Gbps upstream tier and multi-Gbps downstream. In the following illustration, blue frequencies are available for downstream traffic, while red frequencies are available for upstream traffic.
As usual, the upgrades can be implemented incrementally, in stages, with incremental capital investment. .
Then overlapping bidirectional spectrum from 108 to 204 MHz can be activated. that eventually increases up to the full 108-MHz to 684-MHz FDX limit. In that implementation DOCSIS 3.0 can be supported up to the 1002 MHz limit and legacy DOCSIS 3.1 to the 1218-MHz limit.
The point is that Comcast still believes it can upgrade its bandwidth over time to symmetrical 10-Gbps service while remaining the low-cost provider compared to rival fiber-to-home networks.
Monday, October 29, 2018
Some Customers Need More Fiber, Some None
Thursday, August 23, 2018
What if it is Verizon, Not Google Fiber, that Disrupts U.S. Internet Access?
Wednesday, March 18, 2015
Comcast Will Launch 1 Gbps in 2015
Comcast will do so by the end of 2015.
In that sort of environment, many consumers are going to conclude that 40 Mbps is “good enough,” and provides a better price-value relationship.
Saturday, September 10, 2016
Are FTTH Take Rates Really 50%?
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