Nokia says it can do network slicing as soon as this summer

Ethical kit vendor Nokia has launched new tech that allows network slicing on 4G and non-standalone 5G networks.

Full network slicing is only expected when standalone 5G comes along, with a new, improved 5G core. Prior to that it has largely been a slide in the 5G PowerPoint presentation, alongside all the other utopian promises that have been attributed to it as the industry tries to persuade the world, and perhaps even itself, that 5G will change everything.

Now Nokia is claiming that, via a mere software update, its operator customers can dip their toes in the network slicing water today. The solution will support connectivity from 4G and 5G devices over the sliced network to applications running in private and public clouds and will be available this summer, we’re told.

“Working closely with our customers to develop new technologies and business opportunities is hugely important to Nokia,” said Tommi Uitto, President of Mobile Networks at Nokia. “4G/5G slicing enables multiple new use cases which operators can start building now to create new revenue streams.” The customers in question in this case were Telia Finland and A1 Telekom Austria.

“It has been really exciting to be the first operator to conduct a live test of Nokia’s new network slicing feature,” said Jari Collin, CTO of Telia Finland. “As a 5G frontrunner in business customer pilots and solutions, we know that this will be a key functionality that will deliver many of the promises our customers are waiting for. With slicing, we can efficiently use our spectrum to deliver seamless and reliable connectivity and also strengthen our leading IoT position with nationwide deployment of new technologies like  LTE-M and NB-IoT.”

“We are proud to be among the first operators worldwide who successfully demonstrated end-to-end network slicing, spanning the core, transport and radio over our 4G as well as 5G networks,” said Alexander Kuchar, Director Technology & Future Services at A1 Telekom Austria Group.

“For our business customers, it will be a huge advantage to be able to benefit from dedicated mobile communication services, exclusive capacities, strong data security and transmission with high reliability and low latency by integrating A1’s highly reliable and excellent infrastructure and services offering into their internal processes. Network slicing in 4G and extended in 5G will play a key role in allowing A1 to develop new market segments and revenue streams.”

While this feels like a stop-gap technology, designed to let operators have a network slicing dress rehearsal before the main event arrives with SA 5G, this is still a noteworthy achievement for Nokia. It has admitting to taking its eye off the 5G ball a bit and firsts like this will do a lot to restore its technological credibility. The 5G core seems to be a particular strength for Nokia at the moment, so it will be hoping to use that as a springboard to acquire more RAN and fixed business.

Network Slicing – Test Now, Succeed Later

Network slicing is fundamental to make 5G networks successful. This whitepaper introduces the concept of network slicing and provides an overview of three primary 5G service types and core network functions. It also highlights how operators and network equipment manufacturers (NEMs) can take a lead on the competition by adopting test and measurement solutions available on the market today.

Discover:
• How 5G is different from previous cellular connectivity generations
• 5G use cases and challenges
• How testing helps meet quality of service expectations

 

 

 

Network slicing is becoming the unescapable buzzword of the month

Every couple of months a new buzzword emerges, and it starts to emerge in pretty much every conversation. Now its network slicing staking a claim for the title.

Featuring in almost every presentation at the 5G Core conference in Madrid this week, the technology certainly has a lot to live up to. However, like the cloud, virtualisation or digital transformation, it is claiming its 15 minutes of fame, though the promise and potential is very grand.

Although it might not should like the most revolutionary aspect of the quickly evolving telco landscape, it offers so much opportunity to evolve the business and grow revenues. As Franz Seiser of Deutsche Telekom put it, the one-size-fits-all 4G network cannot deliver the fortunes investors have been promised so frequently as the industry wades through this tenuous period.

Network slicing is critical. The idea of creating customisable networks and specific products for enterprise is only achievable through the implementation of network slicing. Or, it can be achieved through more traditional means of network deployment, but this would not be commercially attractive. Soon enough, a slice could be designated for low-latency services in the energy industry, the high-speeds demanded by broadcasting or the resilience and reliability insisted upon in the manufacturing space.

It also adds into the drive towards network convergence.

As Maria Cuevas of BT pointed out during her presentation, network convergence has been attempted in the past, though it has failed. However, baby-steps are being made towards realising the convergence dream, as well as the operational and financial benefits, and network slicing will add further to the momentum.

This is not the only trend which Cuevas is keeping an eye-on, but the ability to designate traffic to specific slices adds notable momentum to the operational side of a converged network.

However, there are still challenges. The next 3GPP standards release in March 2020 should add some much-needed clarity, though many of the questions which telcos are facing today are operational not technical.

Technical challenges are not a problem realistically, according to Telecom Italia (TIM) SVP Lucy Lombardi; a solution will always emerge. The issues which are currently being dealt are much more business focused. Does TIM want slices to be fixed or dynamic? Who will control the functionality of the slice, TIM or the customer? Will roaming be a slice? What kind of industry collaboration does it need?

The technical challenges will gradually dissolve as vendors propose new ideas and telcos present success stories at conference, but the business questions which have been mentioned above are perhaps more challenging. This is where a telco can add value, create differentiation and attract customers.

The 5G networks which are currently being deployed are no-longer driven by the demands of the consumer. The consumer is of course still important, but the 5G network is being designed and deployed to realise the benefits of the enterprise connectivity world. And network slicing is a critical component of this dream.

We want to build a network where failure is impossible – Telefonica CTIO

If you consider 5G is not 5G without a 5G core, why have we not been talking about the 5G core more when 5G is being deployed and the 5G economy is just around the corner.

If you hadn’t figured it out, this article might be about completing the 5G puzzle.

In Madrid, telco executives are gathering to talk about a topic which has not grabbed many headlines to date. The evolution, or perhaps revolution, of the core. And whilst it might be a very complicated project, one thing is very clear; the 5G core will not look very similar to the 4G core.

“We are not building infrastructure for the customer,” Telefonica CTIO Enrique Blanco said at the 5G Core conference.

“We are building it for society. How can we build a network which will not fail? 5G Core is a key topic for us.”

There are two interesting elements to this statement from Blanco. Firstly, the network is fundamentally different in its application. And secondly, if connectivity is going to central to society moving forward, failures cannot be tolerated, irrelevant of severity, location or impact.

Starting with the application of the network, while 4G was built for the mass market and appeasement of the increasingly digitally-native consumers, 5G is much more than that. Increased download speeds are an added bonus, but the value of 5G is realised through the creation of new services and engagement with enterprise.

Walter Wang of Huawei illustrated this nuance very well. The 4G network has been built for a single purpose, however the 5G core needs to be built in a way which allows for the creation of customisable connectivity services for enterprise. For example, a customer in the energy sector will be demanding low-latency. In manufacturing, reliability and resilience are key. And for broadcasting, its speed and availability.

The ‘one-size-fits-all’ 4G network cannot deliver on these demands. If 5G is to offer an opportunity to engage enterprise customers, the 5G core needs to be created in a way which allows for the creation of these services. It’s multi-layered, regionalised and distributed and multi-vendor. Which leads us very nicely onto the next area.

The 5G network cannot fail. The same could be said of the 4G network, however the impact is very different. If 4G networks go down, the general public can’t watch cat videos on the bus. If a 5G network fails, enterprise customers are irked and SLAs (service level agreement) come back to haunt the telco. Critical services fail and there is a very real impact to society.

As Blanco highlighted, operating through multiple layers, distributing the core over several regions and engaging with multiple vendors adds resilience. If there is a failure at one point in the network or ecosystem, it is a case of damage limitation not everyone to panic stations.

This is a perfectly reasonable approach to business, though there are certainly some risks to bear in mind.

A multi-vendor environment is all well and good for resilience, reliability, competition and innovation, however as Veon CTO Yogesh points out, the more variables in the ecosystem, the points of failure. Franz Seiser of Deutsche Telekom also echoed this point; the future network is impossible without automation and automation is very difficult.

This is the challenge with the 5G network of tomorrow; if it is multi-vendor, with telcos selecting components which have been deemed best-in-breed, this is not necessarily a guarantee they will complement each other. The ingredients might be perfect, but if the recipe doesn’t work, neither will the network. In some case, it might be worth sacrificing some quality because the components complement each other.

What is worth noting is that all of these discussions are very much in the early days. The 3GPP Release 16, due in the early part of 2020, will pay more specific attention to the 5G core, and at this point we might see work accelerate.

That said, always bear in mind that 5G is not really 5G until the core is 5G. And the nuances of delivering a 5G core are a lot more complicated than 4G.

Why network slicing is the 5G differentiator telcos have been craving

Telecoms.com periodically invites third parties to share their views on the industry’s most pressing issues. In this article, John Lenns, VP Product Management at Oracle Communications, explores why network slicing could be the differentiator UK telcos are searching for in the 5G arms race.

When it comes to 5G, most UK telcos are still aggressively jostling for pole position. But, with EE the first out of the starting blocks at the end of May – closely followed by Vodafone rolling out its network to seven UK cities a few days later – the marker has well and truly been laid down.

Around five million Brits switch mobile provider each year, so establishing themselves as an efficient and reliable provider of 5G will be critical for telcos looking to both retain existing and attract new customers over the coming years.

Cutting through the noise with network slicing

One way providers can steal a march on competitors is through the emergence of network slicing, a technology that allows telcos to offer differentiated services with tailored connectivity and potentially specific applications for a specific enterprise segment. Service providers need to play more of a central role in smart ecosystems and digital marketplaces to grow revenues and profitability and compete with digital innovators. To that end they should also consider non-traditional business models such as new SaaS and managed service models to reduce costs and share risks/rewards. Network slicing is a key enabler towards this goal.

With 5G unlocking the potential to launch services and products previously unimaginable on 4G, performance and functionality requirements are bound to differ enormously. Network slicing essentially subverts the one-size-fits all approach, providing the opportunity for carriers to tailor connectivity services to the precise requirements of particular applications, users, or devices.

The concept of a dedicated core network is not new, first introduced in 4G as a DECOR feature. 5G, however, bakes network slicing into its core service and extends it to be end to end.

For telcos, the opportunities are limitless. Want to stream virtual reality at a sports event, or 3D video at a music concert? Before 5G, these experiences were tantalisingly out of reach, limited to stadiums and arenas with only the strongest WiFi connection. But network slicing will make them a mainstay of how people experience brands and events.

This freedom to launch and evolve custom-fit network slices rapidly – with lower capital and operating costs – will provide huge opportunities for telcos as they create increasingly sophisticated and lucrative digital services.

Telcos in pole position to take advantage

While we’re still scratching the surface of what 5G can deliver, it’s safe to say that telcos occupy one of the strongest market positions when it comes to exploiting this new network’s vast potential. Nearly every vertical imaginable relies on communications services to not only operate on a daily basis, but also accelerate innovation.

One such example is in the highly-competitive live-game streaming world, where pioneering platform Twitch boasts 3.3 million unique broadcasters per month and a staggering 560 billion minutes watched in 2018. There’s real potential here for providers to adopt greater integration into an ecosystem, with specific slices and integration into customer experience (CX) and applications meaning a specialised version of a game streaming platform could be offered under a telco’s very own brand.

In this scenario, telcos would provide much of the experience, including the basic portals for users and game providers, as well as own-branded monetisation for the latter. The service would operate from multiple cloud environments, with third parties supplying various aspects of the streaming platform, back office, CX, slicing, and edge. The mobile network operator would provide the access and other technologies.

This is just one of the many exciting opportunities for telcos to personalise network ‘slices’ to match the specific requirements of industry-vertical applications with customer segments. All service environments worth their salt will, at the very least, provide the basic ‘5G building blocks’ to help service providers move forward with both traditional mobile and enterprise services.

But the ultimate goal for telcos should be to add value to core services with good margins and operational efficiencies—something that will come with more automation in Cloud native technology and business practices, and with a willingness to explore outside comfort zones to tap into and capitalise on the expertise of people outside the industry. In other words, telcos must focus on creating exceptional experiences for their customers. 5G – along with network slicing – has the potential to make this a reality.

John LennsJohn Lenns, VP Product Management, Oracle Communications As VP of Product Management at Oracle Communications, John is responsible for leading product management, product marketing, business development and strategy teams that help telecoms companies develop and manage all aspects of their 4G and 5G networks, business operations and customer relationships. John joined Oracle Communications as part of the acquisition of Tekelec in 2013, having spent 15 years leading product, technical and business development teams for the company. Today, John is focused on helping telecoms companies make the most of the cloud to deliver 5G networks successfully and securely.

Huawei powered Chinese operators trial 5G for industry verticals

China Mobile, the world’s largest mobile operator by subscribers, has just trialled 5G for business vertical use on a standalone (SA) architecture. Huawei and Baidu provided the technologies.

The trial was carried out in Beijing, China, and the use case was a corporate video conference. It used 8K cameras to capture live video, which was then sent to the 5G SA core network through China Mobile’s 5G gNodeBs base stations. The data was then processed (encoded and decoded) by Baidu servers on the same network, then sent to the conference room for the 8K live video broadcast.

The trial was using the technology called “5G Vertical LAN” defined in 3GPP R16, which in essence is an insulated “slice” of the mobile network dedicated to a single business user, i.e. becoming a private cloud for an enterprise. The enterprise cloud can be provided by the mobile operator, or the enterprise can choose to provide its own customized 5G vertical LAN. This cloudified enterprise environment “enables terminals to directly communicate with each other, and allows them to access enterprise clouds” without going through the public cloud, therefore increasing the communication security.

However, to realise such a virtual enterprise setup it needs the 5G network to be in SA mode, because insulating and managing the virtual network is all done with software and hard to implement on non-standalone (NSA) mode. This China Mobile trial was conducted on such an SA architecture.

Huawei did not disclose details of the distance between the two ends, or the latency. The company put up a live video demonstration in the last Mobile World Congress in Barcelona. In that case the distance between the video capturing point and the broadcasting point was about 2km, and the latency was 11ms. But that trial was carried over Vodafone’s hybrid network.

This is not the only network slicing trial Huawei has carried out recently. The day before, the company worked with China Telecom, the world’s largest integrated operator, and China’s State Grid, to carry out a network slicing trial to manage a live power grid. China Telecom has been vocal in promoting 5G for other vertical industries.

The commercial 5G networks launched so far, in the US and in Korea, are all on NSA architecture, which limits the use cases to primarily enhanced mobile broadband access, therefore are mainly consumer focused. When Colin Wilcock, chairman of the European Union-backed 5G Industry Association (5G-IA), dismissed the 5G leadership of North America and Korea as not real 5G but beefed up LTE, though not entirely devoid of sourgraping, he got a point. Speaking at the Smart to Future Cities conference recently, he stressed that “the 5G we (Europe) need has to support the other vertical industries”, though also he conceded it is not going to happen now, but will be deployed in two to five years’ time, reported by Compelo.

Q&A with Sunil Lingayat, Chief of Cyber Strategy and Technology at T-Mobile

Sunil Lingayat leads the cybersecurity strategy architecture and cybersecurity technology functions for T-Mobile and is responsible for driving next generation cyber strategies and capabilities and positioning products and services into an effective cyber resilience posture. The Big 5G Event team interviewed Sunil ahead of the event to gain a sneak peek of what we can expect at our upcoming conference.

What are the unique security requirements for 5G networks?

At a high level there are two primary reasons that are driving unique security requirements for 5G networks.  First is the use of COTS technologies and open architectures, distributed architectures, disaggregation at various layers of the stack, open service-based architecture (HTTP2/JSON), etc.  Second the exponential growth in number of devices (e.g. IoT), higher business value use cases, need for privacy-by-design, need for Safety, Low latency, order of magnitude higher throughout, etc.  Both of these aspects lead to (a) increased attack surface, (2) susceptible to a broader and established attacks and exploits, and higher tier threat actors, and more importantly (3) traditional security architectures and controls will not work, etc ….all contributing to unique security requirements for 5G in comparison to earlier networks – such as requirement for use case driven security, layered security, security automation, and cyber resilience.

What will be the unique security considerations for specialized 5G use cases?

As per ITU, 5G is expected to support three different families of use cases with somewhat conflicting requirements on a couple of dimensions such as latency, integrity, etc.  These are driving the need for slicing or network of networks architecture.  Within each use case type, there is also the dimension of privacy.  Some use cases requiring very stringent privacy e.g., HIPPA.  Whereas some use cases integrity and latency are critical.  It is important that security controls are geared towards each use case.  One size fits all will not work as it will make services very expensive, fragile, and in effect non-operational.

How can a dynamic security architecture be ensured for each network slice?

Software-defined security (SDS) becomes very important for achieving dynamic security. Security orchestration integrated with service orchestration is essential. Security function virtualization is another approach aligned with the VNF and NFVi architectures. All of this need automation at scale from the very beginning in the architecture.  Machine Learning and AI have to be incorporated and fine-tuned for “whitelist” security model and behaviour monitoring.

How can service providers adequately support NFV/SDN security requirements

Virtualization is not new as a technology.  Much innovation and lessons learned in the cloud industry.  Cyber 2.0 cyber resilience design principles like Autonomic security, least privilege, privilege escalation, dynamic alignment, dynamic positioning, etc have to be designed in. Adoption of de-perimeterized security strategy and architecture is crucial so security is not tied to the perimeter or zone.  Security has to be dynamic.  In fact, SDN/NFV can be effectively used to enhance traditional static (host and network-based) security positively and make 5G services cyber-resilient.

 

You can come face to face with Sunil Lingayat, Chief of Cyber Strategy and Technology at T-Mobile this year at the Big 5G Event this May 6-8 2019 in Denver, CO.

KT and Nokia will join hands to launch first ‘true’ 5G this month

Korea’s mobile operator KT is going to launch nationwide 5G service this month and will collaborate with Nokia to provide services and tools for the business and the public sectors.

Hwang Chang-Gyu, KT’s Chairman and CEO, recently announced that KT’s nationwide 5G network will be switched in March to cover 24 major cities, key transport routes such as expressways, subways, high-speed railways, large universities, and neighbourhood shopping areas. This will be an upgrade from the synchronised launch of 5G services with limited scale on 1 December 2018 by all the three national mobile operators.

“In March, KT will be the first in the world to introduce ‘True’ 5G mobile services,” said Hwang. “In the 5G era, neckband cameras, AR glasses and all kinds of devices will be connected to 5G, contributing to a better life for mankind.” That this was a personal historic moment should not to be lost. Exactly four years ago at MWC 2015, Hwang predicted a commercial 5G network by 2019. “Today, I would like to announce that the promise I made four years ago has finally been fulfilled,” Hwang added in his MWC speech.

The current 5G service that KT, SKT, and LG Plus are offering is fixed-wireless access targeted at business users. During the recent MWC, KT demonstrated plenty of 5G gimmicks for the consumer market, from a 5G connected robot butler bringing a bottle of water to the doorstep to a 5G and AI powered robot barista fixing cocktails.

KT is clearly banking big hope on 5G. Its Economic and Management Research Institute predicted that the socioeconomic value created by 5G will contribute to 1.5% of the country’s GDP by 2025. To realise such potential and to achieve serious monetisation of 5G, KT is looking towards the enterprise market and the public sector. The company announced that it plans to focus on five key areas with its 5G offers: smart cities, smart factories, connected cars, 5G media, and the 5G cloud. It says it is collaborating with various businesses as well as the Korean government to develop 5G services for both Business to Business (B2B) industries and Business to Government (B2G) sectors.

This is an echo to what Marcus Weldon, Nokia’s CTO and the President of Bell Labs, called for during his own speech at MWC. Weldon suggested the telecom industry should focus more on serving other verticals instead of on consumer markets, to deliver the true value of 5G. He did concede that it would need three to five years before telcos can see meaningful revenues from enterprise 5G. But when they do, Weldon predicted the business will soon equal that being made in the consumer 5G segment.

It just happened that KT and Nokia are going to collaborate closely in 5G. During MWC the two companies signed a Memorandum of Understanding (MoU) to collaborate on various 5G technologies. “We are excited to partner with Nokia to conduct these path-breaking trials,” said Jeon Hong-Beom, KT’s CTO. “This collaboration will ensure that we are able to leverage Nokia’s proven solutions and best-in-class professional services to provide a superior and differentiated experience to our subscribers.”

“With Korea, one of the lead countries in the early deployment of 5G, we are delighted to be working with KT to help them build a future-ready network,” added Bhaskar Gorti, President of Nokia Software. “Nokia’s end-to-end portfolio will empower KT to improve its customer experience and network efficiency.”

The key areas of the collaboration will include Service Orchestration and Assurance for the 5G era, with the aim of delivering end-to-end automation and new revenue opportunities for KT’s enterprise customers. This will be supported by the enabling technologies like NFC and network slicing. The joint work will start in Seoul later this year.

ETSI publishes new spec and reports on 5G tech

The European Telecommunications Standards Institute, ETSI, has released new specifications on packet formatting and forwarding, as well as two reports on transport and network slicing respectively.

The new specification, called Flexilink, focusing on packet formats and forwarding mechanisms to allow core and access networks to support the new services proposed for 5G. The objective of the new specification is to achieve efficient deterministic packet forwarding in user plane for next generation protocols (NGP). In the conventional IP networks, built on the Internet Protocols defined in the 1980s, every packet carries all the information needed to route it to its destination. This is undergoing fundamental changes with new technologies like Software Defined Networking (SDN) and Control and User Plane Separation (CUPS), where most packets are part of a “flow” such as a TCP session or a video stream. As a result, there is increasingly a separation between the processes of deciding the route packets will follow and of forwarding the packets.

“Current IP protocols for core and access networks need to evolve and offer a much better service to mobile traffic than the current TCP/IP-based technology,” said John Grant, chairman of the ETSI Next Generation Protocol Industry Specification Group (ISG). “Our specifications offer solutions that are compatible with both IPv4 and IPv6, providing an upgrade path to the more efficient and responsive system that is needed to support 5G.”

The new specification defines two separate services, a “basic” service suitable for traditional statistically multiplexed packet data, and a “guaranteed” service providing the lowest possible latency for continuous media, such as audio, video, tactile internet, or vehicle position. It is worth noting that Flexilink only specifies user plane packet formats and routing mechanisms. Specifications for the control plane to manage flows have already been defined in an earlier NGP document “Packet Routing Technologies” published in 2017.

The report “Recommendation for New Transport Technologies” analyses the current transport technologies such as TCP and their limitations, whilst also providing high-level guidance on architectural features required in a transport technology to support the new applications proposed for 5G. The report also includes a framework where there is a clear separation between control and data planes. A proof-of-concept implementation was conducted to experiment the recommended technologies, and to demonstrate that each TCP session can obtain bandwidth guaranteed service or minimum latency guaranteed service. The report states:

“With traditional transport technology, for all TCP traffic passes through DIP router, each TCP session can only obtain a fraction of bandwidth. It is related to the total number of TCP sessions and the egress bandwidth (100 M).

“With new transport technology, new TCP session (DIP flows) could obtain its expected bandwidth or the minimum latency. And most [sic.] important thing is that the new service is not impacted by the state that router is congested, and this can prove that new service by new transport technology is guaranteed.”

Importantly, the PoC experiment showed that the current hardware technology is able to support the proposed new transport technology and provide satisfactory scalability and performance.

The report “E2E Network Slicing Reference Framework and Information Model” looks into the design principles behind network slicing. The topic of network slices encompasses the combination of virtualisation, cloud centric, and SDN technologies. But there is gap in normalized resource information flow over a plurality of provider administration planes (or domains). The report aims to “provide a simple manageable and operable network through a common interface while hiding infrastructure complexities. The present document defines how several of those technologies may be used in coordination to offer description and monitoring of services in a network slice.” It describes the high level functions and mechanisms for implementing network slicing, as well as addresses security considerations.