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DOCSIS employs a mixture of deterministic access methods for upstream transmissions, specifically time-division multiple access (TDMA) for DOCSIS 1.0/1.1 and both TDMA and S-CDMA for DOCSIS 2.0 and 3.0, with a limited use of contention for bandwidth reservation requests. In TDMA, a cable modem requests a time to transmit and the CMTS grants it ...
DOCSIS 1.0 [12] (cable modem) 38/9 Mbit/s: 4.75/1.125 MB/s: 1997 DOCSIS 2.0 [13] (cable modem) 38/27 Mbit/s: 4.75/3.375 MB/s: 2002 VDSL ITU G.993.1: 52 Mbit/s: 7 MB/s: 2001 VDSL2 ITU G.993.2: 100 Mbit/s: 12.5 MB/s: 2006 Uni-DSL: 200 Mbit/s: 25 MB/s: 2006 VDSL2 ITU G.993.2 Amendment 1 (11/15) 300 Mbit/s: 37.5 MB/s: 2015 BPON (fiber optic service ...
DOCSIS RFI 1.1 [16] later added more robust and standardized QoS mechanisms to DOCSIS. DOCSIS 2.0 added support for S-CDMA PHY, while DOCSIS 3.0 added IPv6 support and channel bonding to allow a single cable modem to use concurrently more than one upstream channel and more than one downstream channel in parallel.
The Multimedia over Coax Alliance (MoCA) is an international standards consortium that publishes specifications for networking over coaxial cable.The technology was originally developed to distribute IP television in homes using existing cabling, but is now used as a general-purpose Ethernet link where it is inconvenient or undesirable to replace existing coaxial cable with optical fiber or ...
DOCSIS 3.0 and lower — 4 Gigabit b/g/n a 2.4 5.0 450 — — — 0 0 0 — — 6.04 FRITZ!Box 6360 Cable Cable DOCSIS 3.0 and lower — 4 Gigabit b/g/n a 2.4 5.0 300 1 USB 2.0 — 2 1 6.5 FRITZ!Box 6430 Cable Cable DOCSIS 3.0 and lower — 4 Gigabit b/g/n 2.4 450 2 USB 2.0 0 2 0 7.30 German version only FRITZ!Box 6810 LTE LTE — 1 Fast b/g/n ...
Under DOCSIS 3.0, up to 32 downstream and 8 upstream channels may be bonded. [27] These are typically 6 or 8 MHz wide. DOCSIS 3.1 defines more complicated arrangements involving aggregation at the level of subcarriers and larger notional channels. [28]
The second is the Downstream External PHY Interface (DEPI). The DEPI protocol controls the delivery of DOCSIS frames from the M-CMTS Core to the EQAM devices [20] Some of the challenges that entail an M-CMTS platform are increased complexity in RF combining and an increase in the number of failure points. One of the benefits of an M-CMTS ...
You need to be in a pretty remote area to get gigabit speeds 24/7 on Comcast, for example, and prior to DOCSIS 3.1 they were selling 24/8 stream configs of DOCSIS 3.0 as gigabit despite it being beyond the technological capacity after overheads, which they could get away with by using the pre-overhead data speed somewhere in the fine print. I'd ...
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