Motorola Mobility has announced its first successful deployment of the DOCSIS Synchronous Code Division Multiple Access (SCDMA) technology at Cablevision Mexico. It also announced that it is in the final stages of testing at Norwood Light Broadband in North America.
DOCSIS SCDMA technology allows cable operators to extend the spectrum used for the limited upstream portion of the HFC network, thus enhancing broadband service offerings.
Motorola's SCDMA solution, the BSR 64000 Cable Modem Termination System/Edge Router and its high-density RX48 Decoupled Upstream Module, is a standardised specification designed to optimise the 5 MHz to 42 MHz of the DOCSIS and EuroDOCSIS 5 MHz to 65 MHz upstream portion of the RF spectrum. Motorola's SCDMA technology addresses a common challenge for many cable operators that occurs when excess impulse and ingress noise impacts throughput performance on high speed DOCSIS broadband networks. By enabling SCDMA, cable operators can gain back once unusable or low performing upstream spectrum below 20 Mhz and above 40Mhz for DOCSIS, Motorola says.
"Although at a slower rate of growth than downstream broadband, demand for upstream capacity continues to increase at a rate of approximately 1.3x annually," said Sean Welch, vice president of network infrastructure at Motorola Mobility. "With SCDMA activated, operators can easily establish higher tier upstream services by simply leveraging once unusable portions of the existing upstream RF spectrum."
By doing so, cable operators worldwide can maximise investments in their current broadband infrastructure efficiently and cost-effectively boost cable upstream speeds, which support symmetrical business services, video conferencing, and cloud based services, Motorola noted.
"These SCDMA deployments – an industry first – reinforce Motorola's vision of responsible network evolution that provides our customers' confidence that we continue to innovate and offer the most cost-effective approaches to maximize their investments," said Welch.
DOCSIS SCDMA was first introduced in the DOCSIS 2.0 standards. It was often trialed, but initial growth in upstream bandwidth was easily handled within the 20MHx to 40 MHz portion of the upstream RF spectrum. Now, the demand for upstream bandwidth is now exceeding the 20MHz to 40Mhz throughput capacity and the need to find new upstream capacity.
"DOCSIS SCDMA is one of the best kept secrets in the myriad of DOCSIS 2.0 and 3.0 features and applications. Motorola's expertise in network characterization and SCDMA demonstrates Motorola's ongoing commitment to innovate and support the ever changing needs of cable operators," said Israel Madiedo, CTO of Cablevision SA de CV. "People are naturally consuming more bandwidth as new devices, such as smartphones and tablets, continue to proliferate. Motorola's SCDMA solution enables us to address the growing strain these connected devices, cloud-based services and Internet traffic place on the return path."