Showing posts with label Korea. Show all posts
Showing posts with label Korea. Show all posts

Tuesday, April 9, 2019

Samsung claims biggest share of Korea's 5G rollout

Equipment from Samsung Electronics Co. represents the largest share the recent 5G network rollouts from all three mobile operates in Korea.

Korean operators have been transmitting 5G signals in Seoul and metropolitan areas since December 1, 2018 using 5G base station radios and 5G core solutions from Samsung’s Networks Business unit.

Specifically, Samsung has supplied 5G core solutions and more than 53,000 5G radio base stations to Korea’s three operators. The deployments used Samsung’s 5G Massive-MIMO Unit (MMU) radio base station in the 3.5GHz spectrum. The ability to re-use existing sites has been key to enabling the Korean operators to deploy a 5G network consisting of tens of thousands of radios within just a few months since the December 1st launch.

The virtualized 5G core solutions, provided to all three Korean operators for their 5G commercial launch, support both legacy 4G networks and next-generation 5G services in Non-Standalone (NSA) mode. Samsung will support the migration to Standalone (SA) mode through a future software upgrade. Samsung’s solution implements many of the key technologies of 5G networks, such as Control and User Plane Separation (CUPS), which are essential for network operators to scale their networks and support the new services enabled by 5G technology.

“Korea is one of the first markets in the world in which the 5G experience is opening up for consumers, and we’re thrilled to play a key role in the nationwide rollout of 5G with our unparalleled 5G network solutions,” said Paul Kyungwhoon Cheun, Executive Vice President and Head of Networks Business at Samsung Electronics. “As a longstanding innovator in the 5G space and one of the few vendors offering a full end-to-end 5G solution, Samsung is at the forefront of pushing the limits of 5G and beyond.”

Tuesday, April 2, 2019

SK Telecom's 5G network is live with 34,000 base stations deployed

SK Telecom has activated a total of 34,000 5G base stations across Korea.

In a press conference at its headquarters in Seoul, SK Telecom marked "the beginning of the age of Hyper-Innovation with 5G".

The company's 5G network initially targets the nation's most data traffic-concentrated areas, including main areas of 85 cities nationwide (Seoul, six metropolitan cities, etc.), university districts, KTX, sports stadiums, expressways, subway lines (Seoul and Seoul Metropolitan Area) and beaches. SK Telecom is also expanding in-building coverage centered around 120 department stores, shopping malls and airports. In the second half of 2019, SK Telecom will expand 5G network coverage to subway systems nationwide, national parks and festival sites.

SK Telecom’s 5G network supports downlinks up to 2.7 Gbps.

New 5GX price plans go into effect on April 5, 2019. Four plans are offered.

  • Slim offers 8GB of data (1Mbps speed after data cap) at KRW 55,000 month 
  • 5GX Standard comes with 150GB of data (5Mbps after data cap) at KRW 75,000 per month.
  • 5GX Prime comes with 200GB of data at KRW 95,000 per month
  • 5GX Platinum comes with 300 GB of data at KRW 125,000 per month

SK Telecom said its 5G pricing structure offers the same amount of data at lower prices compared to its LTE service.

https://www.sktinsight.com/111031



Saturday, March 23, 2019

Ericsson wins 5G contract with KT

KT is deploying Ericsson to enable the nationwide launch of commercial 5G services in Korea starting early April 2019.

Under this initial commercial contract – the first since Ericsson was selected as a 5G supplier to KT in November 2018 – Ericsson is providing 5G New Radio (NR) hardware and software from Ericsson’s complete 5G platform to cover KT’s 3.5 GHz Non-Standalone (NSA) network. Financial terms were not disclosed.

In addition to immersive media, KT’s 5G commercialization use case plans covers: smart factories; safety; drones; and connected vehicles.

Jinho Choi, Vice President, Access Network Design, KT, says: "Having worked successfully with Ericsson on 4G LTE, we are pleased to continue that partnership to make our 5G ambitions a reality with Ericsson’s leading 5G technology.

“Korea is one of the most competitive and technology-advanced markets in the world. By taking a global lead to enable nationwide commercial 5G services through commercially available 5G smartphones, KT is demonstrating our commitment to our customers and showing how we can drive a global 5G ecosystem where Korea plays a key role.”

Patrick Johansson, Head of Ericsson Korea, says: “We’ve worked with KT for many years to bring the very best mobile user experiences to its customers. Notably on 5G, we worked closely together to show the world what 5G could do during a major global winter sports event in 2018.

Wednesday, March 20, 2019

SK Telecom applies Quantum Cryptography to network security

SK Telecom has applied a Quantum Random Number Generator (QRNG) developed by ID Quantique of Switzerland to its 5G authentication center (AuC). QRNG is a device that constantly generates “quantum random numbers,” which creates strong keys that are not biased and cannot be predicted. SK Telecom said it plans to apply the same quantum random number technique to its 4G network as well.

Next month, SK Telecom will also apply ID Quantique’s Quantum Key Distribution (QKD) technology to the Seoul-Daejeon section – the most data traffic-concentrated section in Korea - of its 5G and LTE networks, to strengthen the security of 5G and LTE data transmission and reception. QKD provides ultimate cryptographic security based on the laws of quantum mechanics. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages.

SK Telecom invested US$65 million in ID Quantique in February 2018.

SK Telecom also noted its pivotal role in global standardization of QKD and QRNG technologies at ITU-T. In February 2019, SK Telecom’s two new technologies related to QKD have been selected as work items by ITU-T’s Study Group 17 (SG17), which coordinates security-related work across all ITU-T Study Groups. Combining these two work items with the two on-going work items on QKD and QRNG technologies it proposed in July 2018, SK Telecom is currently leading a total of four meaningful work items in SG 17. In addition, Sim Dong-hi, a delegate from SK Telecom,  is serving as associate-rapporteur on quantum technology in SG17.

“As security emerges as one of the most important issues in the 5G era, SK Telecom is determined to provide the most secure 5G network and focus on expanding the ecosystem by developing quantum cryptography technologies,” said Park Jin-hyo, the Chief Technology Officer of SK Telecom.

SK Telecom and Samsung hit 2.65 Gbps with 4G+5G dual connectivity

SK Telecom and Samsung Electronics completed a network device interoperability test based on Dual Connectivity technology that used both 4G and 5G networks provided by Samsung's Networks Business.

The test, which was carried out at Samsung Electronics located in Suwon, Korea, used Samsung's commercial 4G and 5G NR end-to-end networks solutions which have been provided to the operator's current service. In addition, companies used Samsung's virtual core (vCore) that supports simultaneous 4G and 5G as well as its Galaxy S10 5G, Samsung's first 5G smartphone which was unveiled last month.

During the test, both companies have successfully achieved 2.65Gbps in data speeds on the 5G smartphone, combining both 1.5Gbps in 5G using 3.5GHz frequency (100MHz bandwidth) with 1.15Gbps in LTE using 1.8GHz, 2.1GHz, and 2.6GHz frequencies (65MHz bandwidth) all of which are for commercial use by SK Telecom.

SK Telecom calculates that it will be able to boost the overall transmission data speed by 80% by leveraging the 4G and 5G dual connectivity.

Dual connectivity is also known as 'E-UTRAN New Radio Dual Connectivity (EN-DC)' based on the 3GPP 5G New Radio (NR) standard.

https://www.samsung.com/global/business/networks/insights/news/sk-telecom-and-samsung-completed-4g-5g-network-dual-connectivity-test-achieving-265gbps/

Tuesday, January 1, 2019

SK Telecom carries first live TV broadcast over 5G

SK Telecom aired Korea’s largest New Year’s event - which included a countdown and bell-ringing ceremony, over its commercial 5G network.

The eleven-minute program was carried using the carrier's "T Live Caster," a live broadcasting platform.

The video of the event - which was taken by smartphone cameras installed with the ‘T Live Caster’ app and connected to a 5G mobile routers - was transmitted through 5G base stations and XtvN’s transmission system to reach cable and IPTV viewers of XtvN. The video was transmitted at a latency of less than one second – which is similar to that of the existing wired broadcasting system – despite the extremely congested data environment.

“With today’s successful live TV broadcasting over commercial 5G network, SK Telecom ushers in a new era of 5G-based media services,” said Choi Nak-hoon, Senior Vice President and Head of 5GX IoT/Data Group of SK Telecom. “In this new era, individual creators will be able to provide high-quality live broadcast anytime, anywhere, via 5G smartphones.”

Thursday, December 20, 2018

Korea Internet Neutral eXchange implements Ciena's Waveserver

Korea Internet Neutral eXchange (KINX) is leveraging Ciena’s Waveserver platform to provide connectivity between its data centers and offer new levels of flexibility and scalability for global leading internet content providers.

KINX is the only carrier-neutral internet exchange provider in Korea, specializing in internet infrastructure, content delivery networks and providing cloud computing services to prominent domestic and international carriers, content providers, multiple system operators, financial institutions and government agencies.

Ciena said its Waveserver platform will serve as the foundation for KINX’s new scalable DC architecture with seamless deployment over KINX’s legacy third-party photonic infrastructure.

Waveserver provides capacity up to 400Gbps in a single rack-unit to conserve footprint and support high-bandwidth services such as video-on-demand and gaming. The platform offers the choice of high-density connections to optimize transmission costs and provide rapid bandwidth scalability for high-speed data transfer, virtual machine migration and disaster recovery/backup applications in data center interconnect.

“Our Waveserver platform will connect KINX’s data centers in Korea, providing high bandwidth and low latency connections to domestic and international internet service providers, while supporting growing traffic demands,” stated Rick Seeto, Vice President and General Manager, APJ, Ciena.

Thursday, November 29, 2018

SK Telecom gears up for 5G launch this weekend

SK Telecom is preparing for its big 5G launch on December 1st.

SK Telecom will commence 5G service in the Seoul metropolitan area and 6 other cities beginning at midnight on 01-December-2018.

In press materials sent out ahead of the launch, SK Telecom President Park Jung-ho said, "We will lead the new ICT innovation in Korea based on 5G ∙ AI convergence with a strong sense of responsibility as a company opening the 5G era"


Monday, June 18, 2018

South Korea auctions 5G spectrum

South Korea's Ministry of Science and Technology concluded its auction of 5G spectrum.

Total winning bids amounted to 3,618.3 billion won (US$3.28 billion).

In the 3.5 GHz band, SKT and KT were allocated 100 MHz bandwidth, and LGU + was allocated 80 MHz bandwidth.

In the case of the 28 GHz band, SKT, KT, and LGU + were each allocated 800MHz bandwidth.

The auction used a first phase clock bidding method) for determining the frequency quantity in the 3.5 GHz and 28 GHz bands. A second phase of the auction used sealed bidding to determine the frequency position.

http://www.msit.go.kr/web/msipContents/contentsView.do?cateId=mssw311&artId=1386500


Sunday, June 10, 2018

SKBroadband hits 4 Gbps downstream with DOCSIS 3.1

SKBoadband, a leading cable operator in Korea, has hit a record speed of 4 Gbps downstream and 1Gbps upstream, using DOCSIS 3.1

SKBroadband rolled out DOCSIS 3.1 downstream and upstream pilot service in the Anyang area in Gyeonggi Province and the Gwangju area in Jeollanam Province in November 2017. The deployment uses the Cisco cBR-8 converged broadband router. The Cisco cBR-8 is designed from the ground up for DOCSIS 3.1, featuring support for future advanced technologies like Full Duplex DOCSIS (FDX), Infinite DOCSIS and SDN-based orchestration.

The operator expects to roll out a larSKBroadband plans to further expand the bandwidth of its HFC coaxial cable network to ten Gbps downstream and five Gbps upstream in the future.
ge-scale deployment in the second half of 2018.

“By securing an HFC four Gbps transmission solution, we can provide sufficient bandwidth and stable 1 Gig service to our HFC subscribers," said Jichang Yu, Vice president of SKBroadband Infrastructure Division. "We will continue to provide our customers with the highest value."

“With this technology in place, SKBroadband can deliver services at ultra-high speeds to meet its growing customer needs,” said Sean Welch, VP and general manager of the Cisco Cable Access Business Unit. “The cBR-8 Converged Broadband Router not only addresses today’s bandwidth needs, but also establishes a foundation for continued network evolution to Remote PHY and distributed access networks, Full Duplex DOCSIS and cloud native technologies.”

Sunday, May 20, 2018

Koo Bon-moo, chairman of LG Corporation, passes away

Koo Bon-moo, the chairman of LG Corporation, the fourth largest industrial group in Korea, has passed away. He was 73 and had been ill for about a year. Koo served as chairman since 1995. Under his helm, the global sales of appliances, displays, smartphones and batteries skyrocketed. The company changed its brand identity from Lucky Goldstar to LG. It also divested its semiconductor business (now SK Hynix), and it established a telecom division. 

Koo Kwang-mo (40), a senior official in LG Electronics and the adopted son of Koo Bon-moo, will take over the role of chairman. The Koo family and its charitable foundation are believed to control about 47% of the corporation.


Saturday, February 24, 2018

KT tested 5G at PyeongChang 2018 Games with Intel

KT conducted a number of 5G tests at the Olympic Winter Games in PyeongChang, Korea.

As an official partner of the Olympic Winter Games, KT installed optical fiber cables and the telecommunications infrastructure in 70 of the Olympics venues.

A limited 5G trial service was established in collaboration with Samsung and Intel.

The public was invited to view this at promotional areas in PyeongChang and in the KT 5G Pavilion in Olympic Park in Gangneung.

Because planning for the event started several years ago, KT developed a "PyeongChang 5G Specification".

KT is planning on launching a commercial 5G service in 2019 based in the 5G NR specifications, which were completed last December. Network building and optimization is planned for this year.

In a press release, Intel confirmed its collaboration with KT at the Winter Games. Intel said a total of 22 5G links were established at 10 sites.  The 5G connections were used for image capture viewpoints, IPTV, virtual reality, Wi-Fi and other telemetry.

The pilot demonstration showed multi-vendor interoperability. New services were shown to spectators and visitors in several Olympic venues and public areas.

Monday, December 4, 2017

Samsung cranks out 512-GB Flash for mobiles

Samsung has begun production of the first 512-gigabyte (GB) embedded Universal Flash Storage (eUFS) for next-generation mobile devices. A smartphone with 512GB of flash would be capable of storing approximately 130 4K Ultra HD (3840x2160) video clips of a 10-minute duration.

The new devices stack together eight 64-layer 512Gb V-NAND chips and a controller chip.

Samsung said its new 512GB UFS doubles the density of its previous 48-layer V-NAND-based 256GB eUFS, in the same amount of space as the 256GB package.

Wednesday, September 13, 2017

LG U+ hits 2.5 Gbps in 5G mmWave testing with Huawei

LG U+, a leading mobile network operator in Korea, achieved a peak downlink rate of 2.5Gbps at a distance of 1 km in 5G intensive urban field test conducted in the Sangam area of Seoul in partnership with Huawei.

The testing was based on Huawei's research into the latest 3GPP 5G NR protocol frame. At the same time, this test also verified the large capacity of 5G. In addition, the peak rate of single user under millimeter wave 28GHz reached 18.5 Gbps.

http://www.huawei.com/en/news/2017/9/Huawei-LG-U-5G-urban-field-test

Tuesday, September 12, 2017

SK Telecom Expands LTE-A Pro Coverage to 75 Cities

SK Telecom has expanded the coverage of its LTE-A Pro services – providing up to 700Mbps to 900Mbps speeds – to 75 cities and 31 counties in Korea. The carrier first activated five-band carrier aggregation LTE-A Pro service in June 2017 and has been expanding aggressively since then.

SK Telecom said subscribers can experience up to 900Mbps data throughput in major commercial districts throughout Korea, including Gangnam, Hongdae, Sinsa (Garosu-gil), Yeouido, Jamsil, Myeondong, Jongno in Seoul; Seomyeon in Busan; Dongseongno in Daegu; Chungjangno in Gwangju; Samsan-dong in Ulsan; Daejeon City Hall; Gochang and Wanju in North Jeolla Province; and Gwangyang, Naju, Boseung, Yeosu, Yeongam and Haenam in South Jeolla Province.

Users will need a premium smartphones embedded with the Exynos 9 mobile chipset, such as the Galaxy S8 and Galaxy Note 8.

http://www.globalskt.com/home/info/2138

KDDI and Samsung prove 5G mmWave works at 190 kmh

KDDI and Samsung Electronics completed a series of 5G tests which demonstrate the viability and performance of 5G millimeter wave mobility solutions while traveling at speeds over 190km per hour.

The demonstration, which took place at 'Everland SPEEDWAY' in Korea, involved a battery of individual tests to examine the performance of Samsung's end-to-end 5G mmWave technology. Specifically, as a vehicle accelerated from 0 to 205km per hour on the race track between multiple 5G base stations, the test measured and evaluated a variety of metrics, including handover interruption time, uplink and downlink throughput stability, and latency stability (or "jitter").

In addition, KDDI and Samsung also demonstrated a successful handover scenario, with Samsung's 5G device attaching to the 5G base station as it approached the service area, and successfully being handed over to the target cell at a speed of 192km per hour (GPS speed).

Woojune Kim, Senior Vice President and Head of Next Generation Strategy in Network Business at Samsung Electronics, said, "It is becoming increasingly important that we accelerate our focus on 5G's ability to meet a growing number of performance metrics. Until now, peak bandwidth has been the common refrain, and certainly a big component of the future of 5G. However, the test we conducted with KDDI will help us build a more diverse portfolio of future 5G use cases."

"The trial successfully showcased stable performance under high-speed mobility conditions which will dramatically increase the service experience of users in vehicles," said Akira Matsunaga, Senior Director, Mobile Network Technical Development at KDDI. "We will continue our joint efforts with Samsung to test next generation technology to unprecedented levels and discover new service cases."

http://www.samsung.com/global/business/networks/insights/news/kddi-and-samsung-break-track-record-in-high-speed-5g-mobility-test

SK Telecom and Bharti Airtel form Strategic Partnership

SK Telecom, Korea’s largest telecommunications company, and Bharti Airtel, India’s largest telecommunications services provider, announced a strategic partnership under which Airtel will leverage SK Telecom’s expertise to build the most advanced telecom network in India.

Areas of collaboration include bespoke software to dramatically improve network experience, leveraging advanced digital tools including machine learning, big data and building customized tools to improve network planning based on every customer’s device experience. The two companies will also collaborate to evolve standards for 5G, NFV, SDN and IoT. Network Functions Virtualization (NFV), Software-defined Networking (SDN) and Internet of Things (IoT), and jointly work towards building an enabling ecosystem for the introduction of these technologies in the Indian context.

“SK Telecom is delighted to announce a strategic partnership with Bharti Airtel, a global leading mobile operator,” said Park Jung-ho, the President and CEO of SK Telecom. “SK Telecom will work closely with Bharti to achieve new network innovations so as to deliver a greater value to Bharti’s customers.”

“We are extremely delighted to announce this partnership with the world’s leading operator when it comes to technology understanding and expertise. This partnership will bring a dramatically improved experience to Airtel customers in India by leveraging the expertise of a company that has built one of the best mobile broadband networks in the world,” Said Sunil Bharti Mittal, Chairman of Bharti Airtel.

http://www.globalskt.com

Thursday, August 10, 2017

SK Telecom Develops 5G Repeater

by James E. Carroll

SK Telecom has developed a 5G repeater that improves signals in blanket/shadow areas by amplifying 5G radio signals. The 5G repeater, which is currently in a field trial Gangnam Station in Seoul, could held reduce or elimiate shadow areas of network coverage.  It works by improving the propagation characteristics of radio signals at super-high/above-6GHz frequency bands.

SK Telecom said the Gangnam area in Seoul is one of the most difficult places to plan/build a network due to the presence of a large number of radio wave obstacles and high-density data traffic.

“SK Telecom is moving closer to launching a commercial 5G network by applying key 5G technologies to our 5G trial network in Gangnam, an area with the highest data traffic,” said Park Jin-hyo, Senior Vice President and Head of Network Technology R&D Center of SK Telecom.

http://www.sktelecom.com/en/press/detail.do?idx=1224

SK Telecom – setting the pace in the 5G race



SK Telecom, South Korea's leading mobile operator by market share, is one of the big players to watch on the global stage for early 5G commercialisation. In fact, a race is on with local rivals KT and LG Uplus to have the first 5G service running in time for the 2018 Winter Olympics, which will be hosted in Pyeongchang, South Korea in February 2018 - only seven months away. Of course, 5G standards are not complete and won't be in time for the Winter...

Monday, July 17, 2017

SK Telecom commercialises T-MANO NFV

Korea's SK Telecom announced that it has commercialised T-MANO, an NFV MANO (network functions virtualisation management and orchestration) platform that performs integrated management and orchestration of virtualised network equipment and software.

SK Telecom noted that NFV MANO, also termed MANO, provides an architectural framework for managing and orchestrating virtualised network functions (VNFs) and other software components. The new T-MANO solution has been optimised to SK Telecom's network environment, and is based on the ETSI specifications that define the MANO architecture to facilitate the deployment and connection of services as they are decoupled from dedicated physical devices and moved on to virtual machines (VMs).

Prior to the development of T-MANO, SK Telecom stated that it was necessary to develop, build and operate a separate NFV management platform for each network equipment provider due to the fact that each piece of NFV equipment was based on different specifications, depending on the manufacturer.

Leveraging T-MANO, SK Telecom is able to more efficiently utilise its virtualised network equipment by managing service quality and data traffic in an integrated manner, regardless of equipment manufacturer, while improving the overall service quality through responding flexibly to service failures and errors.

The solution also enables the company to significantly reduce the time required to set up new equipment and provide a new service as it can upgrade the whole system at once, as opposed to upgrading each system separately as was necessary previously.

SK Telecom intends to leverage T-MANO to expand the telecommunications infrastructure ecosystem by opening up the APIs of T-MANO so that the industry can use it to build virtualised network equipment or software.

The company will first apply T-MANO to its virtualised VoLTE (HD Voice) routers, and then plans to expand its application to the virtualised LTE evolved packet core (EPC) and additional equipment including MMS Servers. SK Telecom stated that in 2017, virtualised EPC will account for around 80% of newly-deployed EPC equipment, while from 2019 it intends to deploy only virtualised EPC solutions.

In the field of NFV, SK Telecom has also commercialised an international standards-based NFV system orchestrator, named T OVEN, that was unveiled in 2015, and applied NFV technology to its base station equipment in September 2016.

Friday, June 23, 2017

SK Telecom – setting the pace in the 5G race

SK Telecom, South Korea's leading mobile operator by market share, is one of the big players to watch on the global stage for early 5G commercialisation. In fact, a race is on with local rivals KT and LG Uplus to have the first 5G service running in time for the 2018 Winter Olympics, which will be hosted in Pyeongchang, South Korea in February 2018 - only seven months away. Of course, 5G standards are not complete and won't be in time for the Winter Olympics, which means that network planners will be rushing to show off systems that have barely been tested. Sceptics will say that 5G demos at Pyeongchang are likely to be very limited in their footprint and perhaps only 4.5G rather than truly next gen. However, SK Telecom has a track record of being first with many networking technologies, extending back to its earliest days in CDMA.

Background

South Korea's mobile market is one of the most mature in the world. There are three dominant mobile operators: SK Telecom (approximately 49% share), KT and LG Uplus. Mobile penetration has exceeded 110% for years. The majority of users are on subscription-based plans, rather than prepaid, and churn is relatively light compared to other countries.

SK Telecom, part of the SK Group conglomerate (chaebol), was founded in 1984 and has a CDMA network architecture heritage. For its most recently reported fiscal quarter, SK Telecom posted revenue of KRW 4.234 trillion, operating income of KRW 410.5 billion, basically flat from a year earlier, and net income of KRW 583.5 billion, up 2.1 %YoY. As of the end of March 2017, SK Telecom had 21.65 million LTE subscribers, representing a 10.9% YoY growth, and taking up 72.6% of the company's total mobile subscriber base of 29.83 million. ARPU was KRW 34,927 ($31.04), down 2.9% YoY. SK Telecom also operates the Cyworld social network and virtual reality service as well as the Nate-on messaging application.

First in Carrier Aggregation

This week, SK Telecom announced the launch of LTE-A Pro service, which it described as the last stage of LTE evolution. The service footprint covers the main areas of six major cities: Seoul, Busan, Daegu, Gwangju, Daejeon and Ulsan. The initial LTE-A Pro service uses three-band/four-band carrier aggregation (CA) to deliver rates of up to 700 Mbit/s. When 4 x 4 MIMO is added, the service accelerates to 900 Mbit/s. SK Telecom plans to scale up LTE-A Pro further using five-band CA with 4 x 4 MIMO to achieve 1.2 Gbit/s peak rates. The first mobile device to support the LTE-A Pro service is Samsung’s Galaxy S8. An over-the-air firmware update will be needed to support the additional CA bands.

SK Telecom's spectrum resources include 10 MHz bandwidth in the 800 MHz band, 20 MHz bandwidth in the 1.8 GHz band, 10 MHz bandwidth in the 2.1 GHz band, 10 MHz + 20 MHz bandwidths in the 2.6 Ghz band.

Peak speeds of 700 Mbit/s and up on a mobile phone are certainly impressive. Actually, SK Telecom has been delivering a 500 Mbit/s mobile service since June 2016 using 256QAM combined with tri-band CA. Four years ago, in June 2013, SK Telecom launched the  first LTE-A service, which boasted download speeds of up to 150 Mbit/s, which is two times faster than its regular LTE service and 10 times faster than its 3G network. This was achieved using CA across two 10 MHz channels, along with the first Coordinated Multi Point (CoMP) implementation. Samsung's Galaxy S4 handset, which was the latest and greatest model in the summer of 2013, was the starring device for this milestone service launch as well.

Many world capitals today have yet to attain the 150 Mbit/s performance peaks offered in Seoul four years ago. But surprisingly, SK Telecom's LTE adoption rate amongst is 29.8 million mobile subscribers was only 72%, or 21.6 million users, as of March 2017. This means that even for a mobile operator with the most advanced network in the world, a significant percentage of users are laggards when it comes to updating to the latest service.

Recently, SK Telecom gained recognition for two other technology innovations: 5G mmWave Handover and a Green Scheduler with Lean Carrier algorithm. Both advances won Global Telecoms Business (GTB) Innovation Awards last month. The 5G mmWave handover technology, developed with Samsung, supports Gbit/s-level performance using multiple mmWave 5G base stations. The companies used the Ray Tracing method to calculate the optimal location of mmWave base stations. SK Telecom and Samsung also cited their work in 3D beamforming to resolve attenuation of radio signals in mmWave frequencies. The Green Scheduler with Lean Carrier technology, which was developed in partnership with Ericsson, enhances network energy efficiency while reducing signal interference.

With Ericsson, SK Telecom is also known to be working on a 5G connected car program. Earlier this year, SK Telecom, Ericsson and BMW Korea achieved a peak rate of 3.6 Gbit/s for a connected vehicle travelling at a speed of 170 km per hour. To pull this off, the three companies deployed the world largest mmWave 5G trial network using the 28 GHz band. Beamforming and beam tracking technologies were used to optimise the connection to the speeding car.

Leaping ahead in quantum technologies

To further illustrate its interest in pushing technological boundaries, SK Telecom signed separate research partnerships earlier this year with Nokia and Deutsche Telecom focused on quantum cryptography. The first partnership will match SK Telecom's Quantum Key Distribution System (QKD) with Nokia’s next-generation optical transport system. The first prototype was shown at Mobile World Congress in February.

Nokia and SK Telecom are also collaborating on a Quantum Random Number Generator (QRNG), which is seen a key technology for applying quantum cryptography technologies to IoT devices. SK Telecom has developed what it claims to be the world’s smallest 5 x 5 mm CMOS Image Sensor (CIS) based all-in-one, single silicon (ASIC) for providing non-deterministic true random numbers on demand from quantum-shot noise. The plan is to commercialise the technology to enable secure IoT.

SK Telecom's Quantum Alliance with Deutsche Telekom is more open. At this stage, the agreement aims to the channels of communications open between carriers and vendors when it comes to quantum technologies. The official statement from the company, by, Cha In-hyok, EVP and head of IoT business division, states:

    “Committed to building a quantum-safe future, SK Telecom has been actively developing quantum cryptography technologies since 2011. SK Telecom believes that the co-establishment of the Quantum Alliance with Deutsche Telekom will bring us closer to realizing this goal, while also creating new valuable business opportunities in areas including quantum-safe communications, the Internet of Things and big data. It will work together to accelerate the growth of quantum-based cybersecurity technologies and its ecosystem".


See also