Saturday, February 6, 2021

Japanese researchers develop CMOS transceiver for 300 GHz

Researchers at the Tokyo Institute of Technology and NTT have developed a novel CMOS-based transceiver for wireless communications at the 300 GHz band -- the first wideband CMOS phased-array system to operate at such elevated frequencies.

NTT said the breakthrough opens possibilities "beyond 5G".

One of the key features of the proposed design is that it is bidirectional; a great portion of the circuit, including the mixer, antennas, and local oscillator, is shared between the receiver and the transmitter (Figure 2). This means the overall circuit complexity and the total circuit area required are much lower than in unidirectional implementations.

Another important aspect is the use of four antennas in a phased array configuration. Existing solutions for 300 GHz CMOS transmitters use a single radiating element, which limits the antenna gain and the system’s output power. An additional advantage is the beamforming capability of phased arrays, which allows the device to adjust the relative phases of the antenna signals to create a combined radiation pattern with custom directionality. The antennas used are stacked “Vivaldi antennas,” which can be etched directly onto PCBs, making them easy to fabricate.

The proposed transceiver uses a subharmonic mixer, which is compatible with a bidirectional operation and requires a local oscillator with a comparatively lower frequency. However, this type of mixing results in low output power, which led the team to resort to an old yet functional technique to boost it. Professor Kenichi Okada from Tokyo Tech, who led the study, explains: “Outphasing is a method generally used to improve the efficiency of power amplifiers by enabling their operation at output powers close to the point where they no longer behave linearly–that is, without distortion.

The design achieved maximum rates of 26 Gbaud for transmission and 18 Gbaud for reception.

https://www.ntt.co.jp/news2021/2102e/210205c.html

Singtel installs indoor 5G in Singapore's largest mall

 Singtel has deployed 5G indoors at VivoCity, the largest mall in Singapore. 

The installation uses advanced small cell radio dot technology running on 3.5GHz spectrum. Singtel’s 5G network offers customers up to 1.2 Gbps downloads.

Singtel will extend its in-building 5G coverage to popular malls such as Ngee Ann City and Bugis Junction over the next few months.

Singtel recently switched on 28 GHz mmWave 5G in prime locations and has also steadily enhanced its 5G coverage across the island to include key residential hubs such as Clementi, Punggol and more, since the launch of its 5G network last September.


Singtel installs Ericsson 5G gear

Singel is deploying Ericsson's 5G New Radio (NR) Standalone and dual-mode 5G core network products and solutions, including real-time rating and policy control.

The energy-efficient, end-to-end 5G network will operate on Singtel’s 3.5GHz and 28GHz spectrum bands, spanning outdoor and indoor 5G coverage. Millimeter wave (mmWave) connectivity will also be deployed in hotspots across the city state.

Ericsson said the 5G contract award takes the partnership between Ericsson and Singtel to new levels, as Industry 4.0 gathers pace globally. 

Telecom Argentina adopts Qwilt’s CDN platform, Cisco infrastructure

Telecom Argentina plans to adopt new open caching solution to deliver high-quality streaming experiences across its network on behalf of global and regional content providers. The solution combines Qwilt’s CDN platform based on Open Caching, with Cisco’s edge compute and networking infrastructure. Digital Alpha is providing a unique, capex-free funding model. 

“Today’s announcement is the outcome of a deep collaboration among the partners,” said   Roberto Daniel Nobile, CEO, Telecom Argentina. “Our unified leadership and focus helped us reach an agreement and plan for deployment in record time with introductions, presentations, evaluations, technical deep dives and commercial negotiations handled via Webex due to pandemic travel restrictions. We embrace this new model giving us the opportunity to work directly with the world’s major content providers to reduce operational costs, improve network capacity and elevate the streaming video quality for our customers to the level they expect.”

https://qwilt.com/telecom-argentina-launching-new-cisco-qwilt-and-digital-alpha-cdn-solution-to-improve-streaming-experience-for-its-customers-in-argentina/

https://www.streamingvideoalliance.org/working-group/open-caching/

Singtel to launches Mobile Edge Computing with Azure Stack

Singtel is launching 5G edge compute infrastructure for enterprises. Microsoft Azure Stack is one of the options.

Enterprises will be able to use Singtel’s Multi-access Edge Compute (MEC) infrastructure to process applications like autonomous guided vehicles, drones, robots, virtual, augmented or mixed reality closer to their end-users. 


Mr Bill Chang, Chief Executive Officer of Group Enterprise at Singtel said, “The trials for Singtel 5G MEC allow enterprises to enjoy the best of both worlds with Azure Stack, Microsoft’s trusted hybrid cloud solution, and Singtel 5G MEC’s ultra-low latency performance. Our collaboration places the benefits of 5G and MEC, such as high connection speeds and low latency, in the hands of enterprises, empowering them to use, create, deploy and scale-up new 5G solutions. ”

“Today marks a new chapter in our collaboration with Singtel to unlock the power of 5G and bring the cloud closer than ever to devices and customers. With Singtel’s 5G network, Microsoft’s cloud and edge solutions, and our combined ecosystem of partners, we lower the barriers for enterprises to adopt next generation technologies that drive real business value,” said Mr Yousef Khalidi, Corporate Vice President Azure for Operators at Microsoft Corp.


BT claims unbreakable Wi-Fi with latest consumer gateway

BT introduced new home equipment for its consumer broadband network, promising the UK’s "only unbreakable wi-fi connection for the home backed up by the award-winning EE mobile network."

BT Halo 3+ lineup for its Full Fibre service includes a Hybrid Connect device and a new Smart Hub 2 with Wi-Fi Controls to help families manage screen time. BT’s new Hybrid Connect device works with the Smart Hub 2 to automatically connect to the EE mobile network for back up if required.

BT Halo 3+ will be available nationwide from 5th February, to new customers from £65.99 per month.

  • In the last 12 months, BT’s consumer broadband network has seen an increase of over 60% in download traffic due to home working, home schooling and entertainment.



TIM joins European Open RAN initiative

TIM announced its support for the Open Radio Access Network (Open RAN) initiative kicked off last month by Deutsche Telekom, Orange, Telefónica and Vodafone.

TIM hopes the initiative will provide strong impetus to new functionality in 5G networks.

Major European operators commit to Open RAN

Deutsche Telekom, Orange, Telefónica, and Vodafone Group announced a joint commitment to the rollout of Open Radio Access Network (Open RAN) as the technology of choice for future mobile networks.  In a Memorandum of Understanding (MoU) the four operators expressed their individual commitment to the implementation and deployment of Open RAN solutions that take advantage of new open virtualized architectures, software and hardware to build more agile and flexible mobile networks in the 5G era.

The four operators will work together with existing and new ecosystem partners, industry bodies like the O-RAN ALLIANCE and the Telecom Infra Project (TIP), as well as European policy makers, to ensure Open RAN quickly reaches competitive parity with traditional RAN solutions. This initiative is an important milestone towards a diverse, reinvigorated supplier ecosystem and the availability of carrier-grade Open RAN technology for a timely commercial deployment in Europe.


The four operators believe that the European Commission and the national governments have an important role to play to foster and develop the Open RAN ecosystem by funding early deployments, research and development, open test lab facilities and incentivizing supply chain diversity by lowering barriers to entry for small suppliers and startups who can avail of these labs to validate open and interoperable solutions.

O-RAN publishes 3rd software release - Cherry

The O-RAN Software Community (OSC) announced its 3rd open software release within 18 months, dubbed “Cherry”.The main use cases delivered in Cherry include:Policy based Traffic Steering using the A1 and E2 interfacesAutomated Monitoring and Health check of selected components using the O1 interfaceConfiguration, Fault and Performance Management Services aligned with OAM models and specifications newly approved by O-RANLife Cycle Management Framework...