ZTE’s demonstration of 50G PON, specifically single-lambda, symmetric 50G PON at OFC 2018, highlights the vendor’s R&D commitment in the evolving FTTP markets.
ZTE still needs commercial proof points for its new TITAN OLT/optical transport solution, especially in light of the trend towards decentralized, virtualized, and software-defined fixed access networks.
Investments by numerous vendors over the past few years in ‘LiFi’ are resulting in meaningful progress in 2018. A trial announced by Philips Lighting in March represents a huge endorsement.
While the technology remains several years away from commercial products, LiFi represents a truly disruptive technology that could augment traditional cellular and WiFi.
News flash: With seemingly insatiable customer demand for high-speed data and streaming video, network operators are increasingly concerned about how they can keep pace. And much of that concern centers on ‘bandwidth.’ Traditional cellular radio technologies are constrained, and operators and regulators are scrambling to find new spectrum on which to provide service, particularly with the 5G era looming. WiFi provides an effective tool to extend cellular or fixed coverage into homes and businesses, but it is difficult to seamlessly integrate into other networks and is racked with security vulnerabilities. Continue reading “LiFi Verging Ever Closer to Reality”→
PCS Maximizes Fiber Utilization: The PSE-3 DSP relies on PCS modulation to increase available bandwidth per fiber close to its theoretical maximum.
PSE-3 Simplifies Network Operations: PCS enables the PSE-3 to tune its wavelength capacity from 100G to 600G, using a single modulation format, baud rate, and channel size.
Nokia’s new Photonic Service Engine 3 (PSE-3) is designed to improve optical performance, flexibility, and programmability across a wide range of wavelength capacities. To achieve this, the new DSP chipset utilizes probabilistic constellation shaping (PCS) – a modulation technique which improves optical reach performance by approximately 1 dB, or roughly 25% (compared to the most advanced optical systems today). This brings the optical system performance, according to Nokia, within a fraction of a dB of Shannon theoretical limits. Continue reading “OFC 2018: Nokia’s New PSE-3 DSP Chipset Pushes Optical Transmission Closer to the Shannon Limit”→
Ericsson’s Q4 2017 results showed signs of progress, including significant adoption of its 5G-focused Ericsson Radio System (ERS), an improved position in the Chinese market, and the elimination or completion of a dozen unprofitable and/or non-strategic services engagements.
Unfortunately, the weak results, coupled with continued management upheaval, paint a picture of a company that remains adrift despite replacing a significant portion of its leadership team in the past 18 months.
Ericsson released its Q4 2017 financial results January 31, and as the company had already forecast, it was mostly bad news, particularly when it comes to reported results which reflected a 12% decline in revenue and a painful -34.5% operating margin compared to -0.3% in Q4 2016 and -10% in Q3 2017. However, in the spirit of seeing the light at the end of the tunnel, there was some good news to offset the bad. To be clear, however, some of the news was just bad. Continue reading “Looking for Light in Ericsson Results, but It’s Getting Dimmer”→
As a concept for running diverse logical networks over a common physical infrastructure, network slicing has been linked closely to 5G network transformations and 5G’s aspirations of servicing the needs of consumers alongside myriad industries.
As it gets put into practice, however, a number of questions around slicing still need to be resolved: How granular will slices be? Which networks and network elements will be sliced? How open will slicing be to third parties? What can network prioritization teach us? Most of these questions revolve around business considerations, not technology considerations.
The basic tenets of 5G are well understood: what we’ll use it for, when it will arrive, that it will be a major opportunity with a solid base of subscriptions within the next five years.
A number of other commonly held beliefs about 5G – that it will drive business innovation and core network transformations, introduce network slicing and represent a platform for spectrum innovation – must be questioned.
Last week, the Telecom Council of Silicon Valley convened a forum on “Network Transformation in 5G.” We had the honor of delivering the opening presentation. You can view a copy of it here.
AT&T and Verizon announced a joint venture with Tillman Infrastructure under which Tillman will build hundreds of cell towers across the country. Both AT&T and Verizon will lease and co-anchor towers built under the agreement.
The deal is likely designed to pressure ‘big three’ tower companies Crown Castle, American Tower and SBA Communications to negotiate more favorable terms, but it is not clear Tillman has the clout to have much of an impact on operators’ bargaining positions.
AT&T and Verizon announced a joint venture with Tillman Infrastructure on November 13th under which Tillman will build hundreds of cell towers across the country. Both AT&T and Verizon will lease and co-anchor towers built under the agreement. The operators indicate that the deal enables them to build towers exactly where they are needed; in practice, the Tillman deal provides AT&T and Verizon with an alternative to leasing space from tower companies such as Crown Castle, American Tower and SBA Communications. Continue reading “AT&T and Verizon Send Shot Across the Bow of TowerCos with Tillman Alliance”→