Thursday, April 11, 2024

NTT Achieves Less Than 1ms Latency, Below 1μs Jitter at 400Gbps

NTT's All-Photonics Network (APN) has achieved ultra-low latency over metro-area distances, demonstrating the potential for higher-performance data center interconnected.

NTT published results of APN connections between its data centers near London and in Northern Virginia, achieving round-trip delays of less than 1 millisecond. These tests also showed significantly reduced jitter. 

Two data centers, HH2 in Hemel Hempstead and LON1 in Dagenham, in the United Kingdom, and VA1 and VA3 in Ashburn, in the United States, were connected using NEC APN equipment to measure round-trip delays and delay jitter between the two data centers.

As a result of the demonstration experiment, both data centers were connected with delay of less than 1 millisecond and delay jitter of less than 1 microsecond at 400Gbps. In the U.K., the delay2 between data centers at the same distance as this demonstration exceeds 2 milliseconds.

NTT notes that conventional networks with general Layer 2 switch experience delay jitter of several microseconds to tens of microseconds. A major cloud service provider specified that the conditions under which data centers can be treated as the same data center are 2 milliseconds3, which is significantly lower than the delay expected for general cloud applications.

China Telecom achieves record 120 Tbps over single fiber

In a trial conducted with Yangtze Optical Fibre and Cable Joint Stock Limited Company (YOFC) and ZTE, China Telecom Research Institute achieved a maximum real-time single-wavelength rate of 1.2Tbit/s, resulting in a single optical fibre single-direction transmission rate exceeding 120Tbit/s. 

The test used S+C+L bands over standard single-mode quartz optical fibre. 

The verification test has set new benchmarks in system bandwidth, algorithms, and architecture:

  • Enhanced bandwidth: The traditional C-band spectrum expands to include the S and L bands, achieving a substantial communication bandwidth of 17THz across the S+C+L multiband, spanning the range of 1,483nm-1,627nm.
  • Higher performing algorithms: China Telecom Research Institute leverages the optical fiber loss and power transfer characteristics of the S/C/L bands, implementing a technique that maximizes spectrum efficiency through adaptive matching of symbol rate, channel spacing, and modulation code type. Additionally, with ZTE's advanced multi-band system filler wave and automatic power balancing technology, the service performance across all channels is balanced, vastly expanding the maximum transmission distance.
  • Reimagined architectural design: this real-time transmission methodology incorporates the industry's leading CPO (Co-Packaged Optics) technology, boasting a single-wave signal baud rate exceeding 130GBd and a bit rate of 1.2Tbit/s, significantly reducing the number of required photoelectric components.

The experiment employed the ultra-low attenuation, large effective area optical fibre developed by YOFC. This fibre boasts a lower attenuation coefficient and an expanded effective area, facilitating the expansion of the system's bandwidth to include the S-band. This advancement enables the achievement of a maximum real-time single-wavelength rate of 1.2Tbit/s.


Vantage Data Centers plans 2nd data center in Zurich

Vantage Data Centers unveiled plans for a second Zurich campus (ZRH2) supporting 24MW of critical IT capacity. This campus, the company’s 33rd globally, is located 30 kilometers north of Zurich’s City Center in Glattfelden. It is conveniently situated just over 20 kilometers from Vantage’s ZRH1 campus in Winterthur and 15 minutes from Zurich Airport.

ZRH2 will have a total of 226,000 square feet (21,000 square meters) of space for Vantage’s customers consisting of hyperscalers, cloud providers and large enterprises. It comes online as the company is seeing increased demand globally to support artificial intelligence and other high-performance computing applications.

When combined with Vantage’s flagship Zurich campus (ZRH1), both campuses will offer customers 64MW of capacity for their computing requirements.

“Zurich is a rapidly growing data center market due to its strategic central location and its global financial leadership, and we expect to continue developing in this market based on customer demand,” said David Howson, president of Vantage Data Centers, EMEA. “Across Europe and the globe, the demand for highly efficient, hyperscale data centers is booming to meet the needs of next generation applications, from powerful AI models to high-performance computing and cloud transformation. Vantage is prepared to meet that demand for current and new customers, and we look forward to opening the doors of our latest data center this summer.”


Dell'Oro: Private Wireless RAN Revenues up ~40 Percent in 2023

Private Wireless Radio Access Network (RAN) revenue growth slowed in the fourth quarter on a year-over-year (Y/Y) basis; however, full-year revenues still accelerated around 40 percent in 2023, propelling private wireless to comprise around 2 percent of the overall RAN market.

“Although public RAN is still fueling the lion’s share of the overall RAN capex and the overall investment levels are tracking below some of the initial projections provided by the vendors in the early part of the 5G enterprise hype cycle, the fact of the matter is that private wireless is now growing at a formidable pace,” said Stefan Pongratz, Vice President at Dell’Oro Group. “This stands in contrast to public RAN and enterprise WLAN – both segments are projected to contract in 2024,” continued Pongratz.

Additional highlights from the April 2024 Private Wireless Report:

  • The evolving scope of private wireless taken together with the fact that the $20 B+ enterprise RAN opportunity remains largely untapped is spurring interest from a broad array of participants across the ecosystem. Still, the traditional RAN suppliers are currently well-positioned in this initial phase.
  • Top 3 Private Wireless RAN suppliers in 2023 include Huawei, Nokia, and Ericsson.
  • Top 3 Private Wireless RAN suppliers in 2023 excluding China include Nokia, Ericsson, and Samsung.
  • The overall Private Wireless RAN forecast is mostly unchanged (+3 percent relative to the last report), reflecting the fact that our bottom-up vendor analysis vs. the initial top-down calculations is improving the market size estimates. In addition, the industry is now past the hype phase and in a better place from a forecasting perspective.
  • The high-level message that we have communicated for some time has not changed—private wireless is a massive opportunity, but it will take some time for enterprises to embrace private cellular technologies.
  • Total Private Wireless RAN revenues are projected to grow at a 21 percent CAGR over the next five years, while public RAN revenues are set to decline at a 2 percent CAGR over the same time period.
  • The underlying technology mix has also not changed. 5G is dominating in China, while LTE is currently dominating outside of China. Private 5G RAN revenues are expected to reach the $1 B to $2 B range by 2028.

Crown Castle names Moskowitz as next CEO

Crown Castle appointed Steven J. Moskowitz as President and Chief Executive Officer

Moskowitz held several executive leadership roles over his 12 years at American Tower Corporation, including seven years as EVP and President, of the U.S. Tower business. During his tenure, American Tower’s U.S. operations became the largest and most profitable U.S. wireless infrastructure company, tripling in size to more than 20,000 cell sites and expanding the indoor DAS network division, growing Adjusted EBITDA approximately 5x, representing more than 85% of the corporation’s profitability. Most recently, Mr. Moskowitz served as CEO of Centennial Towers Holding LP, where he created a leading provider of build-to-suit cell sites in Brazil, Colombia, and Mexico. Prior to Centennial, Mr. Moskowitz served as the CEO of NextG Networks, a provider of fiber-based small cell solutions. During his tenure, he successfully scaled the business, significantly increasing revenue and cash flow, and doubling the asset base prior to its sale to Crown Castle in 2012.

"We are excited to welcome Steven as Crown Castle’s next leader. His appointment marks the conclusion of a robust process during which the CEO Search Committee and the Board unanimously determined that Steven is the candidate best suited to oversee our strategy and path forward. He possesses all the key skill sets that the Board was looking for, including strong operating experience with domain expertise, strategic capital allocation, proven value creation, and prior CEO experience leading high-performing teams," said P. Robert Bartolo, Chair of the Crown Castle Board of Directors.

"Steven's breadth and depth of experience in domestic and international towers and small cell solutions is unique in the industry, and we know that he will provide valuable insights as we continue our progress on the strategic and operating review of the company's enterprise fiber and small cell business, and tower growth opportunities. We are confident that under Steven’s leadership, Crown Castle is well positioned to execute on its strategic initiatives and drive enhanced value for our shareholders."

Teledyne LeCroy captures Wi-Fi 7, Bluetooth, and 802.15.4 traffic

Teledyne LeCroy introduced its Frontline X500e wireless protocol analyzer with Wi-Fi 7. The solution captures and correlates data from a wide range of communication technologies, including Bluetooth, Wi-Fi, 802.15.4-based technologies (including Matter, Thread, and Zigbee), or wired interfaces such as HCI-UART, USB, SPI, and Audio I2S.

The Frontline X500e with its ability to handle 320MHz channel width and 4096 QAM (quadrature amplitude modulation) empowers design and test engineers, and IT specialists to optimize performance and troubleshoot issues, in the rapidly evolving landscape of wireless communication. Only the Frontline X500e equips design and test engineers with the means to:

  • Ensure seamless interoperability of products that integrate Wi-Fi 7 technology.
  • Measure the impact of Wi-Fi 7 on overall system performance, latency, and throughput.
  • Reveal how Wi-Fi 7 implementations coexists with other wireless technologies, such as Bluetooth, fostering harmonious communication.


Renesas opens 300-mm wafer fab for power semiconductors

Renesas Electronics commenced operations at its Kofu Factory, located in Kai City, Yamanashi Prefecture, Japan. 

The Kofu Factory previously operated both 150mm and 200mm wafer fabrication lines under Renesas Semiconductor Manufacturing Co., Ltd, a wholly owned subsidiary of Renesas, but ceased operations in October 2014. Renesas made the decision to re-open the factory in May 2022 as a 300-mm wafer fab to support the growing demand for power semiconductors, which is propelled by the industry-wide goal to realize a decarbonized society. Renesas conducted a 90-billion-yen worth investment in 2022 and has now started operations. The factory will start mass production of IGBTs and other products in 2025, doubling Renesas’ current production capacity for power semiconductors.

“We are proud to announce a remarkable achievement of the Kofu Factory. After its closure in 2014, the Kofu Factory has gone through a transformation and emerged as a dedicated 300-mm wafer fab for power semiconductors, exactly a decade later,” said Hidetoshi Shibata, President and CEO of Renesas. “We extend our heartfelt thanks to the local governments of Yamanashi Prefecture, Kai City and Showa Town as well as the plant construction companies, equipment vendors, outsourcing and other partner companies. The power semiconductors produced at the Kofu Factory will help maximize the effective use of electricity, which will be in significant demand as EVs and AI continue to proliferate and advance.”

Outline of the Kofu Factory

  • Official Name: Kofu Factory, Renesas Semiconductor Manufacturing Co., Ltd.
  • Address: 4617 Nishiyahata, Kai City, Yamanashi Prefecture, Japan
  • Date Opened: April 1, 2024
  • Size of Clean Room: up to 18,000 square meters
  • Products to be Manufactured: IGBTs, Power MOSFETs and other power products