قصص إخبارية دولية 5G

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General

Ericsson and MediaTek achieve 4.36 Gbps downlink in 4CC demo

Ericsson and MediaTek achieved a downlink speed of 4.36 Gbps when they merged four channels – one frequency division duplex (FDD) and three time division duplex (TDD) – in a lab test. They said it’s the highest known speed based on this band combination.

The four-component carrier (4CC) aggregation demonstration was done in Ericsson’s interoperability development testing (IoDT) labs, where the two companies completed a 5G data call using one low-band and three mid-band channels in the sub-7 GHz frequency range.

More specifically, the downlink peak rate of nearly 4.4 Gbps was reached by combining 20 MHz of AWS spectrum, 80 MHz of Citizens Broadband Radio Service (CBRS) and 200 MHz of C-band spectrum. The test was carried out using MediaTek M80 5G modem, Ericsson’s Baseband 6648, TDD Massive MIMO radios AIR3268, AIR3239 and TDD Radio 4426.

The higher throughput in this combination will lead to faster downloads and seamless video streaming for smartphone users and fixed wireless access subscribers, Ericsson noted in a press release. A spokesperson said the test was conducted at the end of February into the beginning of March. Since it was an internal lab test, no carrier network was necessary.

“Carrier aggregation is crucial to getting the best possible 5G performance out of scattered spectrum assets,” said Sibel Tombaz, head of Product Line 5G RAN at Ericsson Networks, in a statement. “At Ericsson, we are persistently exploring all possible frequency band combinations to boost capacity and coverage. We have also shown that carrier aggregation is a game changer when it comes to optimizing the combined bandwidth of allocated spectrum assets to deliver higher date rates for a greater number of users.”

Carrier aggregation provides the capability to combine many frequency bands, enabling higher speeds and increased cell coverage that improve capacity and the user experience, Ericsson noted. By combining FDD spectrum with TDD spectrum, more users can benefit from carrier aggregation gains.

5G changes the game

During Mobile World Congress 2023 in Barcelona, T-Mobile President of Technology Neville Ray talked about how T-Mobile was able to combine two FDD and two TDD channels for greater speed and performance. That’s something they could not do with 4G LTE.

Working with Ericsson, Nokia, Qualcomm Technologies and Samsung, T-Mobile managed to aggregate four channels of mid-band spectrum on its 5G standalone (SA) network. That demo, which used the Samsung Galaxy S23, involved two channels of 2.5 GHz and two channels of 1.9 GHz spectrum, creating an effective 225 MHz-wide 5G channel. They were able to reach speeds topping 3.3 Gbps.

General

Mobile gaming set for cloud, 5G boost

Nvidia predicted developments in cloud and 5G to transform the mobile gaming sector, unlocking experiences on smartphones which were previously the domain of dedicated PCs and consoles.

The company’s director of global ecosystem and business development for AI, edge and accelerated computing Joao Kluck Gomes told Mobile World Live mobile is currently the largest segment of the gaming market, but titles available are typically simple and archaic due to the limitations of smartphones.

He added cloud and 5G will bring “photorealistic 4K gameplay with fast responses” to mobile, along with laying a foundation for metaverse content.

To capture the opportunity, operators will need to invest in “GPU-accelerated network edge computing” in addition to 5G, Gomes said.

Gomes explained cloud streaming combines “AI and compute graphics to enable dynamic, interactive and immersive virtual spaces”, citing potential applications for operators beyond gaming, with automotive players including BMW and Mercedes-Benz among businesses employing the approach to create “real-time replicas of their factories to quickly train robots on new tasks and even create digital twins of 5G networks”.

The expert believes cloud gaming is now on-par with dedicated gaming PCs or consoles, though conceded the experience on a large screen with a fibre connection “is different than playing with smartphones as some games do not suit small screens and limited touchscreen controls”.

Dedicated gaming smartphones including those from Razer are helping address such lingering limitations and Gomes noted the idea of mobile gaming could ultimately become literal, with chips installed in autonomous vehicles to enable people to play while they travel.

General

Qualcomm unveils Snapdragon 7+ Gen 2 smartphone processor

Qualcomm has unveiled its latest Snapdragon 7+ Gen 2 Mobile Platform, with new capabilities for on-device AI enhanced experiences, mobile gaming, photography, videography and audio, among other uses. The company said the chip provides a CPU and GPU performance and power efficiency that can enable fast and nonstop gaming, dynamic low-light photography and 4K HDR videography, AI-enhanced experiences and high-speed 5G and Wi-Fi connectivity. 

For gaming, the chip can bring content in focus at full resolution and the scene’s background at a lower resolution. Volumetric Rendering brings game realism and Snapdragon Sound with Qualcomm aptX brings lossless music streaming and lag-free sound for gaming.

For photographers, the chip sports, among other features, an 18-bit Triple ISP, allowing users to capture in mega low light mode, snapping 30 images and merging the best parts into one shot for brighter, clearer, more colorful photos after dark. 

Regarding AI, the integrated Qualcomm AI Engine ensures AI-enhanced experiences. Also featured is the Qualcomm Sensing Hub with a dedicated AI processor, enabling user activity recognition and acoustic scene detection, for example. The AI Super Resolution intelligently upscales game scenes or photos for superior visual quality from a low-resolution image.

Looking at performance, the chip delivers download speeds of up to 4.4 Gbps with power efficiency. For the first time in the Snapdragon 7-series, the platform includes support for 5G/4G Dual-Sim Dual Active (DSDA) so consumers can use two Sims when traveling or to separate their work and personal communications. The Qualcomm FastConnect 6900 Mobile Connectivity System ensures fast and extremely responsive Wi-Fi at up to 3.6 Gbps. 

Qualcomm noted that the new Snapdragon 7+ Gen 2 will be adopted by brands such as Redmi and Realme, with commercial device launches expected this month. 

General

Cohere chief tips OTFS for greatness

INTERVIEW: Cohere Technologies chief Ray Dolan told Mobile World Live Orthogonal Time Frequency Space (OTFS) is the mother of all waveforms, one which will ultimately engulf the mobile industry, lay the groundwork for 6G and, of course, propel his business.

Following a keynote appearance at MWC23, Dolan explained OTFS essentially sits above channel access methods including TDMA, FDMA and CDMA which he conceded even he thought were the only real options available to the wireless industry when he started out in 1986.

Now he believes “it’s just a matter of time” before OTFS becomes dominant.

The software-based method “can be dimensioned” and has “the principles of radar so velocity is not an impairment”, allowing it to connect with space objects orbiting at up to 30,000mph, while also working underground: “it’s extremely robust”, meaning it could form a bedrock for 6G and beyond.

It is also a key element in a partnership between Cohere Technologies and US aerospace and defence company Lockheed Martin which Dolan believes highlights a massive opportunity for the mobile market in the global defence industry and other adjacent sectors.

Dolan explained Lockheed Martin wants to enable all manner of things to communicate “whether it’s a tactical war fighter” or its back-office systems.

The Cohere Technologies executive also had plenty to say about the financial backing his company has received from tier one operators, along with its moves in the broader open RAN sector.

General

Bullitt dongle allows Android, iOS phones to connect to satellite

Recently, Bullitt unveiled two new devices to provide its satellite-to-mobile messaging service — the Motorola Defy 2 rugged Android smartphone and the Motorola Defy satellite link, a Bluetooth device that provides satellite connectivity to any smartphone.

The Motorola Defy 2 smartphone is designed for outdoor adventurers. It can survive being dropped and handle harsh environmental conditions. It features an extra-large battery but a slim design.  

The Motorola Defy satellite link — a dongle device — is particularly interesting because it allows any Android or iOS smart phone to connect to satellite via Bluetooth. 

Richard Wharton, co-founder of the Bullitt Group, said there are large swaths of the U.S. and other parts of the world that don’t have cellular coverage. He said people could put the dongle on their key fob or in their car glove box to connect to satellite in uncovered areas.

The dongle also functions as an SOS messenger and a GPS tracker. This is an area where Bullitt will compete with Garmin for emergency GPS tracking services.

The Motorola devices with the Bullitt Satellite Messenger app will first try to connect via Wi-Fi or cellular as normal, and if neither are found to be available, they will connect via satellite.

The two new devices with Bullitt’s software join the first device that Bullitt offered – the CAT S75 smartphone. 

Bullitt’s strategy

The Bullitt Group is approaching the satellite-to-mobile challenge from the device perspective. Bullitt licenses its Satellite Messenger software on various original equipment manufacturer (OEM) devices.

While other players in the satellite-to-mobile ecosystem are focused on low-earth orbit (LEO) satellite constellations, Bullitt is working with existing geosynchronous (GEO) constellations to provide a two-way messaging service, immediately. The Motorola devices will connect to the GEO satellites owned by Echostar and Inmarsat.

Wharton said the two-way messaging service is being rolled out in large geographic regions throughout 2023. “We’ll have all of Europe at the end of March; North America and Latin America in Q2. By the end of the year, hopefully most of the world with the exceptions of China, Russia and other markets where you can’t put satellite communications.”

Wharton said there’s no difference in the text-messaging experience for the user whether the service uses an LEO constellation or a GEO constellation. GEO might even be a little better right now because people don’t have to wave their device around to connect via line of sight with an LEO satellite.

In the future though, Bullitt will want to use 5G, and that will require LEO.

“For us to deliver better data and voice that’s going to require 5G NR with Release 18, likely in the next two to three years,” he said. “To deliver those data speeds, we’re going to need an LEO constellation to do it.” It’s already collaborating with Echostar on that.

Bullitt uses Skylo for its core network technology. Skylo manages the connections to the devices over existing licensed GEO satellite constellations.

MediaTek

In November 2022, Bullitt said it was using MediaTek’s 3GPP Non-Terrestrial Network chipset.

“We successfully worked with Bullitt, integrating our 3GPP NTN technology and chipset into the world’s first commercially available devices with two-way satellite messaging,” stated J.C. Hsu, general manager of MediaTek’s wireless communications business unit.

Need for satellite-to-mobile

Wharton said there is a clear need for satellite to fill in gaps in cellular coverage. He said 30% of the U.S. landmass is not covered, and 70% of Canada’s landmass is not covered. “It’s difficult to build out more cell towers. There is absolutely a real need for cellular in-fill. The only viable way of doing that is through satellite,” he said.

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