Showing posts with label Japan. Show all posts
Showing posts with label Japan. Show all posts

Thursday, June 22, 2017

NTT Com launches global SD-WAN

NTT Communications (NTT Com) announced the launch of the NTT SD-WAN Service Portfolio, offering coverage spanning over 190 countries, and also the deployment of a fully software defined network that provides the framework for the delivery of a suite of overlay SD-WAN services for global and regional enterprises.

The global software defined network is designed to provide NTT Com with enhanced flexibility and speed to support new services that can help enterprises transform their operations.

The NTT SD-WAN platform is based on a new architecture that is locally distributed at sites worldwide via over 75 local cloud centres (LCCs) that are optimised for network, mobility and security. In addition, NTT SD-WAN real-time streaming network analytics offers CIOs and IT staff insight into application performance, network security and the end-user experience. The platform can also support the delivery of services from CPE located at branch offices.

Key features of NTT SD-WAN platform include:

1.         Real-time streaming network analytics based on NTT Com's application visibility reporting and analytics tool to help enterprise customers manage network workload and performance.

2.         Enterprise connectivity flexibility, with support for connectivity options such as local ISP, Internet, broadband, wireless, MPLS and LTE, plus cloud connectivity to major SaaS and cloud service providers.

3.         CPE flexibility, with the ability to select NTT provided or customer provided SD-WAN devices at branch offices.

4.         Optimised local ISP selection and routing, offering optimised connectivity to 1,000+ local network providers that connect customer locations in over 190 countries.

5.         Enhanced QoS, enabling the application and enforcement of QoS policies.

6.         Secure web gateways and application acceleration, with security via NTT Com's secure web gateways at LCCs and application acceleration via its LCCs.

NTT Com's software defined network also enables malware detection reporting to help enterprises deal with botnets and malware without the need for on-premises hardware or software.

NTT Com noted that the new solution leverages the software defined technology and platform acquired via the Virtela acquisition in 2014.


Monday, May 15, 2017

Nokia and KDDI trial 5G on 28 GHz

Nokia and Japanese operator KDDI, serving around 40 million mobile subscribers, announced they have conducted a trial simulating future 5G network demands, providing high-speed, gigabit connectivity inside an apartment block utilising Nokia radio technology on the 28 GHz band.

The trial, conducted between the KDDI Research building and a residential apartment approximately 100 meters away, achieved speeds in excess of 1 Gbit/s over the 28 GHz band, demonstrating how 5G technology can be used inside apartment blocks to meet demand for wireless ultra-broadband including in major cities such as Tokyo, which is estimated to be the world's most densely populated metro area.

The trial with KDDI was carried out in Fujimino City, Saitama Prefecture and represents the first in a series of planned 5G collaborations between Nokia and KDDI following the signing of a Memorandum of Understanding (MoU) in 2016 to develop technologies for a new, faster generation of wireless communications.

The trial specifically involved the Nokia AirScale base station, part of its 5G FIRST end-to-end solution, which provided coverage and connectivity to the apartment block. In addition, Nokia AirFrame provided a commercial platform to enable the cloud RAN and support the transmission of streaming data.




  • Last December, Nokia announced that KDDI had deployed its Motive Service Management Platform (SMP) to enhance customer care by streamlining and speeding the resolution of issues for its mobile subscribers. Nokia Motive SMP enables KDDI to improve the detection, troubleshooting and resolution of issues when subscribers use online self-care tools. KDDI was to deploy Motive SMP across its service areas in Japan via Amazon Web Services (AWS).

Tuesday, May 9, 2017

NEC teams with Red Hat for trial of KDDI next generation enterprise platform

NEC announced that it contributed to a successful trial of a next generation enterprise platform by KDDI of Japan, a telecommunications and ICT solution provider serving around 40 million domestic mobile subscribers and over 2,000 large enterprises, in collaboration with Red Hat K.K.

NEC noted that as adoption of 5G and IoT services increases, it anticipates that rapid and efficient development and operation of services will be required across a larger number of servers and network infrastructure systems. As part of its effort to deliver this, NEC participated in trials with Red Hat designed to verify the feasibility of KDDI's next generation integrated platform, which incorporates infrastructure and IaaS elements, and its ability to operate with multiple types of systems.

The recent trials with KDDI, which were conducted earlier in 2017, confirmed the feasibility of delivering advanced functionality including:

1.         The use of open cloud technology to deliver quality, reliable system infrastructure for telecommunications carriers.

2.         Integrated management of multiple services using simplified infrastructure, flexible services and efficient operations.

3.         The maintenance and replacement of servers and storage devices without service interruptions.

4.         The provision of advanced monitoring utilising distributed technology developed by the KDDI Research Institute.

NEC stated that the trials were based on the Red Hat OpenStack Platform, which was used to create an open cloud environment, with the infrastructure implemented and managed by NEC. NEC plans to continue working with Red Hat to help deliver the performance needed for KDDI's next generation platform.

Monday, May 1, 2017

NTT DOCOMO Outlines a Medium-term Strategy

NTT DOCOMO outlined six principles that will constitute its new medium-term strategy through the 2020 fiscal year.  The six declarations are aimed at fostering an innovative business structure in the coming era of 5G.

The six declarations of DOCOMO's new plan are as follows:

Market leader - DOCOMO aims to lead the market in value propositions by further integrating and evolving its services, actively returning value to customers through a wide array of tangible benefits, including strengthened loyalty programs and attractive billing plans. By fiscal 2020, the total number of "d POINT" partners will be increased to more than 300 partners, with the aim of establishing "d POINT" as one of Japan's largest point programs.

Style innovation - Leveraging the strengths of 5G, DOCOMO will launch a wide range of exciting and unexpected services under a company-wide project called "empower+d challenge" (empowered challenge), which will enable customers to realize their aspirations and achieve greater affluence. In particular, through the creative application of virtual reality, artificial intelligence (AI) and IoT technologies, DOCOMO will offer all-new innovation for customer experiences, lifestyles and work styles.

Peace of mind and comfort support - DOCOMO will use AI to develop all-new customer contact points for the provision of optimal, stress-free support for each customer, anytime and anywhere, with a special emphasis on reducing customer wait times. A new system will enable customers to consult their smartphones about a wide range of issues, and measures for enhanced communication will be implemented for issues requiring specialized assistance.

Industry creation - DOCOMO, the leader in emerging 5G technologies and services, will collaborate with partners across a wide range of industries to contribute to social and industrial development through 5G technologies. From late May 2017, 5G trial sites will be launched to enable partner companies and DOCOMO to collaborate in creating standard-setting new services that leverage 5G strengths including low latency, ultra-high speed, ultra-large capacity and massive device connectivity.

Solution co-creation - DOCOMO also will collaborate with partners in six key fields-primary industries, education, sports, healthcare, mobility and work style reform-aiming to contribute to further growth and prosperity in Japan, including through the vitalization of regional economies. In the case of work style reform, collaborations will facilitate telework environments and share offices, to be introduced this year.

Partner business expansion - The plan's sixth declaration is the further enhancement and evolution of DOCOMO's business platforms for loyalty points, customer referrals, FinTech, AI agents, IoT, drones and other business areas, which partners will use to expand transaction flows, develop new business and realize higher levels of productivity.

https://www.nttdocomo.co.jp/english/info/media_center/pr/2017/0427_00.html

Thursday, April 20, 2017

HK-G Submarine Cable to Offer 48Tbps Capacity

Construction has commenced on a new Hong Kong - Guam Cable system (HK-G) that will offer 48 Tbps of design capacity when it comes into service in late 2019.

The 3,900 kilometer undersea cable, which features 100G optical transmission capabilities, is being built by RTI Connectivity Pte. Ltd. (RTI-C) and NEC Corporation with capital from the Fund Corporation for the Overseas Development of Japan's ICT and Postal Services Inc. (Japan ICT Fund), along with syndicated loans from Japanese institutions including NEC Capital Solutions Limited, among others.

In Hong Kong, the cable is slated to land in Tseung Kwan O (TKO) and will land in Piti, Guam at the recently completed Teleguam Holdings LLC (GTA) cable landing station. HK-G will land in the same facility as the Southeast Asia - United States Cable System (SEA-US).

Russ Matulich, RTI-C's President and CEO, acknowledged this important milestone stating, "Hong Kong is already an important interconnection point for undersea cables, and Guam is emerging as a key telecommunications hub. By extending HK-G to our SEA-US cable investment in Guam, RTI-C is facilitating a new diverse 100G transpacific cable to better serve our customers' traffic requirements between Asia, the United States and Australia." Matulich added, "RTI-C's existing investments, and those under current consideration, will enable other cable owners to better utilize their assets by interconnecting with RTI-C in Hong Kong or Guam."

http://www.RTI-Cable.com
http://www.nec.co.jp

Monday, April 10, 2017

Japan's EneCom selects Nokia for 100G

Nokia announced it has been selected to deploy a 100 Gbit/s network in the Chogoku area of Japan for Energia Communications (EneCom), the main utility and telecommunications company in the area.

With the deployment of an advanced optical transport system integrated with 100/200 Gbit/s coherent technology, the Nokia solution is designed to transform EneCom's transport network and enable more flexible and reliable services. The network is being deployed in the Chugoku area on Japan's main island, Honshu, encompassing the major cities of Okayama and Hiroshima.

Under the agreement, Nokia will deploy its 1830 Photonic Service Switch (PSS) to provide integrated, ultra-wideband wavelength routing and switching to optimise EneCom's networks to support fluctuating traffic demand. The solution is based on Nokia's advanced super coherent digital signal processor, the Photonic Service Engine 2 (PSE-2), and also features GMPLS and CDC-F ROADM functionality.

The upgrade is designed to enable EneCom to meet increasing traffic demands, as well as offer protection during natural disasters. The network features real-time optical fibre supervision, which provides monitoring and allows fibre breaks to be located, for improved operations and maintenance efficiency and increased reliability.

Previously, in early 2016 Nokia and EneCom announced the commercial deployment of G.fast technology in Japan to allow the ICT service provider to utilise existing copper networks to deliver up to 1 Gbit/s broadband access to residential subscribers. It was noted the deployment followed a G.fast technology trial conducted in 2015. EneCom was to initially deploy G.fast in the Chugokua region of Japan starting June 2016.


EneCom specifically selected Nokia's 7367 Intelligent Service Access Manager (ISAM) SX-16 to enable G.fast connectivity for multiple, and the 7368 ISAM CPE F-010G-P for home devices. It was also to install the 5520 Access Management System. EneCom had also previously announced trials of Nokia's TWDM-PON technology.

http://www.nokia.com

Saturday, April 8, 2017

NTT Com to Deploy 400G in Data Centers

NTT Communications will begin deploying a 400 Gbps optical transmission system in its data centers beginning this month.

The system will raise the transmission capacity of NTT Com's core network above 19Tbps per optical fiber, or more than double existing capacity.

The company said the 400G rate is achieved by using advanced digital-signal processing technology developed in house.

The main features and advantages of the 400G system are as follows:

  • Top-level energy and space savings
  • The new system reduces energy consumption per bps by 75% and space requirements by 80% compared to the existing system. The savings were achieved through a synergistic combination of advanced digital-signal processing technology and 16nm complementary metal-oxide semiconductor (CMOS) technology. Energy-saving integrated circuits can be constructed rapidly, enabling transmitters to be quickly deployed even in confined spaces at data centers.
  • More than double existing transmission capacity
  • The new system achieves more than double the transmission capacity per optical fiber compared to its predecessor system. To generate 400G signals, the system utilizes NTT's 16 quadrature amplitude modulation (QAM) for both phase and amplitude, and sub-carrier multiple transmission.
  • New OTN and 400GbE interfaces

In connection with the deployment, NTT Com will offer new optional network services for enterprises, including the sequential launch of OTN interfaces (OTU2, OTU2e and OTU4) mainly for wholesalers and data center users, and a 400GbE interface incorporating framing technology compatible with OTUCn which is the result from NTT's R&D.

To deliver new services and functions with even greater speed and flexibility, NTT Com will combine SDN technologies and dis-aggregation architecture, which can be redeployed as required according to function or module, replacing existing high-function, all-in-one dedicated equipment.

http://www.ntt.com/en/about-us/press-releases/news/article/2017/0407.html

NTT Carriers One Petabit per Second over Single Fiber over 200 km

NTT has demonstrated a record inline optical amplified transmission of 1 petabit (1000 terabit) per second over a 205.6 km single strand of 32-core (light paths) optical fiber.

The experimental system used 32-core fiber with a new arrangement of cores to reduce inter-core light leakage, a fan-in/fan-out (FI/FO) device to couple light into the multi-core fiber, along with new digital coherent optical transmission technology. The result aws 31.3 Tbit/s capacity per core (680 Gbit/s per wavelength x 46 wavelength channels).  Multiplied by 32 cores, adn the total transmission capacity exceeded the petabit milestone.

The test was conducted in collaboration with the Technical University of Denmark, Fujikura Ltd., Hokkaido University, the University of Southampton and Coriant.

The transmission occurred within a single optical amplifier bandwidth (C-band), which is half the bandwidth used in a previous experiment the used C-band + L-band. NTT said its research indicates that it is potentially possible to carry 1 petabit per second over 1000 km, which is approximately the distance between major cities both in Japan and in Europe.


http://www.ntt.co.jp/news2017/1703e/170323a.html#b2



Thursday, March 30, 2017

SoftBank and Ericsson Test mmWave 28 GHz for 5G

Ericsson and SoftBank announced the next stage of joint 5G technology trials as part of a program launched in August last year, when the partners tested 5G technology including base stations and end user equipment with control signal feedback using mid-band spectrum at 4.5 GHz, which is one of the candidate bands for delivery of 5G services in Japan.

Following the completion of basic 5G trials conducted in Tokyo in 2016 using 4.5 GHz and 15 GHz spectrum, the two companies now plan to proceed with more advanced tests.

The next 5G trial will be conducted in both indoor and outdoor trial environments and will encompass device mobility and stationary testing. The trial will specifically utilise Ericsson's mmWave 28 GHz 5G test bed solution, which includes base stations and device prototypes, and will feature advanced 5G technologies including massive-MIMO, massive beamforming, distributed MIMO, multi-user MIMO and beam tracking.

The latest technology trials are designed to deliver both the multi-gigabit data rates and ultra-low latency that are expected to be key requirements for future consumer mobile broadband and industrial use-cases.

Ericsson announced last July that it was extending its longstanding partnership with SoftBank and would hold joint field trials of 5G technology in Tokyo. Under the agreement, the two companies planned to cooperate to build a common understanding of 5G use cases and deployment scenarios, evaluate potential 5G technology components in field trials, and collaborate on 5G research projects.

In November 2016, Ericsson announced it had completed the first commercial implementation of its Elastic RAN for SoftBank's in Japan. Part of the Ericsson Cloud RAN solution, Elastic RAN is designed to improve users' mobile broadband experience through dynamic coordination of users and cells. Ericsson stated that installation of the technology in a Tokyo train station showed that downlink throughput could be increased by up to 40% during peak hours for commuters with 3 carrier aggregation-enabled smartphones.

In February this year, SoftBank announced it had deployed Ericsson's virtual Mobility Management Entity (MME), Cloud Execution Environment (CEE) based on OpenStack and Cloud Manager for Orchestration (ECM) into its commercial network. The deployment implemented a complete network functions virtualisation (NFV) solution, including virtual network functions (VNF), NFV Infrastructure (NFVI), VNF Manager (VNFM) and VNF Orchestration (VNFO).

The Ericsson virtual MME operates on commercial off-the-shelf hardware and is designed to coexist with native Ericsson MME to extend the resource pool.

http://www.ericsson.com

Wednesday, February 8, 2017

Toshiba Begins Construction of 3D Flash Memory Fab

Toshiba started construction of a new state-of-the-art semiconductor fabrication and a new Memory R&D center at Yokkaichi Operations in Mie prefecture, Japan, the company’s main memory production base.

Fab 6 will be dedicated to production of Toshiba's 3D BiCS FLASH, which promises significant density improvements over planar NAND Flash memory.


http://www.toshiba.com

Monday, February 6, 2017

WD and Toshiba Produce First 512 Gigabit 64-Layer 3D NAND Chip

Western Digital Corp. announced pilot production of the first 512 Gigabit (Gb) three-bits-per-cell (X3) 64-layer 3D NAND (BICS3) chip in Yokkaichi, Japan, with mass production expected in the second half of 2017.

The company describes the first production as a significant achievement in a nearly three-decades-long legacy of flash memory innovations.

“The launch of the industry’s first 512Gb 64-layer 3D NAND chip is another important stride forward in the advancement of our 3D NAND technology, doubling the density from when we introduced the world’s first 64-layer architecture in July 2016,” said Dr. Siva Sivaram, executive vice president, memory technology, Western Digital. “This is a great addition to our rapidly broadening 3D NAND technology portfolio. It positions us well to continue addressing the increasing demand for storage due to rapid data growth across a wide range of customer retail, mobile and data center applications.”

The 512Gb 64-layer chip was developed jointly with the company’s technology and manufacturing partner Toshiba.

http://www.wdc.com

Western Digital Achieves First 64 Layer 3D NAND


Western Digital has achieved pilot production of 3D NAND technology in 64 layers. The technology, which WD is calling BiCS3, was developed jointly with Toshiba, its manufacturing partner. It will be initially deployed in 256 gigabit capacity and will be available in a range of capacities up to half a terabit on a single chip. WD expects commercial volumes of BiCS3 in the first half of calendar 2017. "The launch of the next generation 3D NAND...


Tuesday, January 24, 2017

NTTPC to Offer Managed Cloud Service Using Viptela SD-WAN

NTTPC Communications Inc. (NTTPC), a premier telecommunications carrier in Japan, is using  Viptela’s Software-Defined Wide Area Networking (SD-WAN) technology for its first managed cloud network service called "Master’sONE".

The Master’sONE Service uses the Viptela SEN (Secure Extensible Network) to establish a secure overlay network across MPLS and Internet circuits. It enables the mixing and matching of a variety of connections including MPLS, broadband, 3G/4G LTE, satellite and point-to-point links, which customers and/or NTTPC engineers can manage as a single network. Viptela enables NTTPC to centrally create, control and enforce policies throughout the network to meet performance requirements for different application types including mobile, voice, data and video.

“We are pleased to announce our partnership with NTTPC and help them roll out SD-WAN in Japan,” said Pepe Garcia, GM of Viptela, Japan & LATAM. “NTTPC joins a growing list of leading national and international carriers that have chosen Viptela to deliver managed SD-WAN services.”

http://www.nttpc.co.jp/english/overview.html
http://www.viptela.com

Friday, January 20, 2017

NEC to Build 48 Tbps Subsea Cable from Hong Kong to Guam

NEC Corp. was awarded a contract by RTI Connectivity to supply a high capacity optical submarine cable for a new system connecting Hong Kong and Guam.

The 3,900 km Hong Kong Guam Cable System (HK-G) is scheduled to begin operation in January 2020, featuring 100 Gbps optical transmission capabilities that deliver a total capacity of more than 48 Tbps.

The HK-G is slated to connect in Guam with the SEA-US optical submarine cable system that directly connects Southeast Asia to the United States, and that NEC began constructing in March 2015.

"NEC is delighted to be selected as the supplier of the HK-G Submarine Cable planned by RTI Connectivity," said Mr. Toru Kawauchi, General Manager of NEC's Submarine Network Division. "With Guam becoming a new hub in the Pacific, we look forward to helping the RTI group of companies provide for the expanding Asia-Pacific demand for more connectivity."

The contract will partially utilize capital from the Fund Corporation for the Overseas Development of Japan's ICT and Postal Services (Japan ICT Fund).

http://www.nec.co.jp

Thursday, January 5, 2017

NTT and Furukawa Announce 2 Joint Ventures for Optical Components

NTT Electronics Corporation and Furukawa Electric Co. agreed to establish two joint venture manufacturing companies for planar lightwave circuits and optical semiconductors. Both joint ventures will be based in Japan.

The companies said the deals were motivated by the need for stable and efficient supply capability of optical components has increased in response to the demand created by rapid growth in cloud services.

http://www.ntt-electronics.com/en/news/2016/12/ntt-electronics-and-furukawa-electric-establish-joint-venture.html

Sunday, December 18, 2016

DOCOMO Partners with China's CAICT on 5G

NTT DOCOMO and the China Academy of Information and Communication Technology (CAICT) agreed to jointly investigate the standardization of 5G technologies and available frequency bands.

CAICT, a national research organization directly under the Provincial Government of the Ministry of Industry and Information Technology, is in charge of policies and standardization strategies on information and communication in China.

Under the MOU, DOCOMO will participate in the 5G Trial launched by the IMT-2020 (5G) Promotion Group to verify 5G technologies and systems. The group is driving research and development to help standardize 5G technologies in China as quickly as possible. During the trial, DOCOMO and CAICT will also study a possible frequency bands for 5G networks.

https://www.nttdocomo.co.jp/english/info/media_center/pr/2016/1215_00.html

Wednesday, December 14, 2016

Alibaba Cloud for Japan Ready for Launch

Alibaba Cloud for Japan is ready for commercial launch on December 15, 2016.

The service is provided by SB Cloud Corporation, which is a joint venture between SoftBank Corp. and Alibaba Group Holding Limited.

Alibaba Cloud, the cloud computing arm of Alibaba Group, has the largest share of the Chinese market with its services. Its services provide the critical infrastructure that supports the Alibaba Group’s e-commerce sites, which recently processed a maximum 175,000 orders per second during this year’s Singles’ Day, a large-scale sale that takes place in China on November 11.

With Alibaba Cloud, customers can use Alibaba Group hosted data centers in China, the United States, Hong Kong, Singapore and other locations in addition to those hosted by SB Cloud in Japan.

https://www.sbcloud.co.jp/

Monday, December 5, 2016

Yahoo! JAPAN Interconnects Data Centers with Infinera Cloud Xpress

Yahoo! JAPAN, one of the largest portal sites in Japan, has deployed the Infinera Cloud Xpress to interconnect its data centers in Osaka. Yahoo! JAPAN also uses the Infinera XTM Series in its metro networks.

Infinera partner ITOCHU Techno-Solutions Corporation provides Yahoo! JAPAN information technology solutions and data center maintenance services.

Infinera's Cloud Xpress leverages the company's photonic integrated circuit technology to deliver a 500 Gb/s super-channel over 150km km without additional multiplexers and amplifiers. The Cloud Xpress incorporates Infinera’s Instant Bandwidth technology to allow customers to software-activate line-side bandwidth in 100 Gb/s increments as and when needed, closely matching their end-customer demands. In addition, the Cloud Xpress is designed for plug-and-play installation with simplified provisioning and support for data center automation using open software defined networking (SDN) application programming interfaces (APIs).

“Yahoo! JAPAN's deployment of the Cloud Xpress is made possible by the collaboration of our partner ITOCHU Techno-Solutions Corporation, offering its customers the best solutions for data center interconnect as DCI applications become more pervasive across the globe,” said Andrew Bond-Webster, Vice President, Regional Sales APAC at Infinera. “The compact design, ease of use and scalability of Cloud Xpress and the XTM Series stand out in metro data center interconnect applications where data center operators need to grow capacity rapidly while minimizing the cost of space and power.”

https://www.infinera.com/yahoo_japan_deploys_infinera_cloud_xpress_for_data_center_interconnect

Infinera Debuts Cloud Xpress 2 for Data Center Interconnect


Infinera introduced its second generation Cloud Xpress platform for scalable 100 gigabit Ethernet (100GbE) data center interconnect (DCI) over multi-terabit optical links. The platform is aimed at connecting cloud data centers, which are rapidly migrating to 25 GbE server uplinks and 100 GbE fabrics between server racks. Infinera, which was first to market with a purpose-built compact DCI product in 2014, said its new Cloud Xpress 2 raises the bar...


Monday, November 21, 2016

NTT Launches New Submarine Cable-Laying Ship

NTT officially launched the "Kizuna", new submarine cable-laying vessel, from the Kanrei shipyard in Tokushima, Japan.

The 8,500 ton ship, which measures 109 meters in length and 20 meters in width, and which will have a planned average cruising speed of 13 knots and a capacity of up to 60 crew, will be completed by the end of fiscal year 2016.

Kizuna will be owned by NTT FINANCE and leased to NTT World Engineering Marine Corporation (NTTWEM). The ship is configured with its main working space in the stern. Its design incorporates azimuth propellers, an electric propulsion system and a dynamic positioning system. These allow it to navigate quickly to selected locations and once in position, to withstand wind velocities of up to 14 meters per second, wave heights of up to 3 meters and ocean currents of up to 3 knots.

http://www.ntt.co.jp

Sunday, November 20, 2016

NTT Docomo Cites 5G Progress with Samsung, Huawei

In a test conducted with Samsung Electronics earlier this month at Fuji Speedway, a motorsport racing circuit in Shizuoka Prefecture, Japan, NTT DOCOMO achieved a data speed of more than 2.5Gbps with a mobile device that was in a vehicle travelling 150km/h. The company said this trial verified the feasibility of stable connectivity for 5G mobile devices in fast-moving trains. Transmissions were conducted using the 28GHz high-frequency band, one of the candidate bands that the Ministry of Internal Affairs and Communications is considering to designate for commercial 5G networks in Japan.

DOCOMO said the problem of large path-loss of high-frequency radio signals was overcome with massive multiple-input multiple-output (MIMO) technologies that incorporate beamforming, which concentrates radio waves in a specific direction, and beam tracking, which adjusts the beam according to the fast-moving mobile device's location.

In a separate undertaking, DOCOMO conducted an outdoor data-transmission trial with Huawei from October 3 to 26. It was carried out in a field measuring 100,000 square meters, equivalent to 12 soccer pitches, in the Minato Mirai 21 waterfront of Yokohama. The trial involved 23 simultaneously connected mobile devices and achieved a cumulative 11.29Gbps of data throughput and latency below 0.5 milliseconds using the 4.5GHz frequency band.

The trial combined multi-user MIMO (MU-MIMO) technology for simultaneous multiple access and a precoding algorithm that optimizes signals for maximized performance and also limits inter-user interference. It achieved a MU-MIMO transmission of a maximum 79.82bps/Hz/cell, which was 1.8 times more efficient than an outdoor trial conducted in China in November 2015.
The successful outcomes of these trials will be exhibited at DOCOMO R&D Open House 2016 at the DOCOMO R&D Center in the Yokosuka Research Park near Yokohama, Japan on November 17 and 18.

https://www.nttdocomo.co.jp/english/info/media_center/pr/2016/1116_00.html

Monday, October 31, 2016

Asia Pacific Gateway Cable Enters Service

NTT Communications announced the launch of service on the consortium-backed Asia Pacific Gateway (APG) optical submarine cable network.

APG, which spans a total length of 10,400 km, leverages 100 Gbps optical transmission and digital coherent technology to deliver a capacity of more than 54 Tbps, the highest of any network in Asia.

NTT said the cable routing avoids areas prone to earthquakes and typhoons, and has connectivity points in Mainland China, Hong Kong, Taiwan, Japan, Korea, Malaysia, Singapore, Thailand and Vietnam.

NTT Com has established two diverse landing points, one in the East and the other in the West of Japan for the APG and Pacific Crossing-1 (PC-1) submarine cable which connects between Japan and the U.S. having diverse route such as north and south routes. The company has also implemented diverse landing points in Hong Kong and Singapore for the APG and for the Asia Submarine-Cable Express (ASE), which was launched in August 2012.

http://www.ntt.com/en/about-us/press-releases/news/article/2016/20161031_2.html


  • The Asia Pacific Gateway (APG) project was first proposed in 2009.

See also