Sunday, March 16, 2014

Video Tutorial: Synchronization and Timing for LTE-Advanced

 Martin Nuss, CTO of Vitesse Semiconductor, provides an overview of Synchronization and Timing for LTE-Advanced
http://youtu.be/PikErOZ8xyg

Part 2 - What are the key differences between LTE FDD and TDD, and LTE-Advanced?
http://youtu.be/dqZC6bx-iHo

Part 3 - Do operators need to run their backhaul networks differently for LTE FCC, TDD and LTE-Advanced?
http://youtu.be/Aw9fkJEkFdM

Part 4 - Why are mobile operators looking for GPS alternatives?
http://youtu.be/G-_erWLBnZk

Part 5 - What standards are being developed to deliver time and phase synchronization with IEEE 1588?
http://youtu.be/gseBV35gV54

Part 6 - What impact will the new ITU-T standard for time and phase delivery have on network architecture?
http://youtu.be/2r62spb4TFU

Part 7 - What impact will the new ITU-T standard have on network operators and telecom equipment suppliers?
http://youtu.be/JVco_hRw7AE

Part 8 - What are Vitesse's solutions for OEMs to achieve the new ITU G.8273?
http://youtu.be/0gq5HxjzXhY



VMware Releases Software-defined Virtual SAN

VMware officially released its first software-defined storage product.

VMware Virtual SAN, which is built directly into the VMware vSphere kernel, provides a new tier of hypervisor-converged storage. The software abstracts and pools internal magnetic disks and flash devices from industry-standard x86 servers to produce a high-performance and resilient shared datastore for virtual machines (VMs).

"Today VMware changes the way that storage has been operated to date," said John Gilmartin, vice president and general manager, SDDC Suite Business Unit, VMware. "VMware Virtual SAN is a radically simple storage solution optimized for virtual environments that brings an application-centric approach to storage management. Customers that know VMware vSphere know VMware Virtual SAN, and can rely on that familiarity to hit the ground running with VMware Virtual SAN."

Features include:

  • Hypervisor-converged architecture: Embedded within the VMware vSphere kernel, VMware Virtual SAN delivers the most efficient data path for superior performance while minimizing resource utilization resulting in the consumption of less than 10 percent of CPU resources.
  • High performance with elastic and linear scalability: VMware Virtual SAN uses flash to deliver performance acceleration through read/write caching. The software provides a granular and elastic approach to provision performance and capacity enabling customers to linearly scale their clusters on demand by adding nodes to a cluster or disks to individual nodes
  • Storage Policy Based Management: With storage policy based management, VMware Virtual SAN shifts the management model for storage from the device to the application. A single VMware Virtual SAN datastore can provide differentiated service levels based on individual VM policies. For administrators, there are no complex configurations through LUNs or volumes, they avoid overprovisioning, and can change policies easily. With automated provisioning and management, administrators improve the ability to meet Service Level Agreements (SLAs).
  • Integration with the VMware stack: VMware Virtual SAN is easy to configure and deploy requiring two clicks using VMware vSphere Web Client. Its integration with VMware vSphere enables customers to use data services such as backup, cloning, replication and snapshots as well as features such as Distributed Resource Scheduler™, High Availability, vMotion and Storage vMotion. Additionally, VMware Virtual SAN is interoperable with VMware Horizon View 5.3.1, VMware vCenter Site Recovery Manager, VMware vCenter Operations Management Suite and VMware vCloud Automation Center.

Some performance specs:

  • 2 million input/output operations per second (IOPS) on a read-only workload on a 32 node cluster; (1) and,
  • 640,000 IOPS on a mixed workload on a 32 node cluster. 

VMware Virtual SAN can be deployed on a wide range of servers. Pricing starts at $2,495 per processor. VMware Virtual SAN for Desktop is priced at $50 per user.

http://www.vmware.com

NEC Delivers 100G for Colombia's INTERNEXA

NEC has delivered a 100Gbps transponder to Internexa, a newregional carrier in South America which has already started commercial operation in Colombia.

Internexa, which is as an affiliate of the ISA, is building a wholesale transmission network spanning 28,000 km connection Venezuela, Colombia, Ecuador, Peru, Chile, Argentina and Brazil using terrestrial fiber primarily mounted on electrical infrastructure.  The transponder that NEC delivered for the construction of these network projects incorporates a 100Gbps digital coherent technology developed by NEC and a DP-QPSK modulation system to support high-capacity transmissions of a maximum of 96 waves. Prior to its introduction, a test was conducted by integrating NEC's 100Gbps transponder seamlessly into Internexa's existing optical transmission system located on the optical layer of the current 80 x 10Gbps DWDM System provided by a third party vendor. The transponder earned higher marks than its competitors for its signal characteristics, implementation efficiency, footprint and energy-saving performance.

"In recent years, telecommunications traffic is rapidly increasing in response to the growing use of smartphones, machine to machine, cloud computing, digital cities, CDN's, tablets and the launch of LTE services. As a result, the expansion of optical fiber networks that can accommodate this growing traffic is urgently required in Latin America," said Genaro Garcia, CEO, Internexa. "The 100Gbps transponder provided by NEC to Internexa in Colombia has demonstrated significant competitive advantages, such as rapid implementation, efficiency and excellent performance. This allows us to continue offering customers the best services through our networks."

http://www.nec.com/en/press/201403/global_20140317_01.html

  • INTERNEXA recently acquired NQT, a wholesale carrier company which provides telecommunications transport and Internet access services in the state of Rio de Janiero, Brazil, which has among its clients small, medium and big telecommunications companies, some of which offer specific services to the energy market.  NQT operates a 2,700km long network and is based on an open business model, which allows the company offers services to all telecommunications operators.


NTT and Mitsubishi Develop Authenticated Encryption Technique

Researchers at Nippon Telegraph and Telephone Corporation, Mitsubishi Electric Corporation, and the University of Fukui have jointly developed an authenticated encryption algorithm offering robust resistance to multiple misuse, thereby helping to ensure confidentiality and integrity.  NTT said the technique could prove very useful in knowing that large-volume data has not been tampered with.  The new algorithm accepts messages longer than the 64-gigabyte limit of AES-GCM, and it works faster than AES-GCM on many platforms.

The algorithm has been entered in the Competition for Authenticated Encryption: Security, Applicability, and Robustness (CAESAR) project, based on which the algorithm is expected to be deployed for increasingly secure and reliable information technology.

http://www.ntt.co.jp/news2014/1403e/140317a.html

See also