The 6G promise

As I attend TMForum Innovate Americas in Dallas, AI, automation and autonomous networks dominate the debates. I have long held the belief that the promise of 5G to deliver adapted connectivity to different organizations, industries, verticals and market segment was necessary for network operators to create sustainable differentiation. At Telefonica, nearly 10 years ago, I was positing that network slicing would only be useful if we were able to deliver hundreds or thousands or slices.

One of the key insights came from interactions with customers in the automotive, banking and manufacturing industries. The CIOs from these large organizations don’t want to be sold connectivity products. They don’t want the network operator to create and configure the connectivity experience. 

The CIOs from Mercedes, Ford, Magna know better what their connectivity needs are and what kind of slices would be useful than the network operators serving them. They don’t want to have to spend time educating their providers so that they can design a service for them. They don’t want to outsource the optimization of their connectivity to a third party who doesn’t understand their evolving needs. 

The growth in private networks implementations in healthcare, energy, mining, transportation and ports for instance, is a sign that there is demand in dedicated, customized connectivity products. It is also a sign that network operators have failed so far to build the slicing infrastructure and capacity to serve these use cases.

As a result, I proposed that network operators should focus on creating a platform for industries to discover, configure and consume connectivity services. This vision had a lot of prerequisites. Networks need to evolve and adopt network virtualization through separation of hardware and software, cloud native functions, centralized orchestration, stand-alone core, network slicing, the building of the platform and API exposure…

A lot of progress has been made in all these categories, to the point that we see emerging the first dedicated slicing solutions for first responders, defense and industries. These slices are still mostly statically provisioned and managed by the network operators, but they will gradually grow. 

The largest issue for evolving from static to dynamic slicing and therefore moving from network operated to as a service user configurable is managing conflicts between the slices. Dedicating static capacity for each slice is inefficient and too cost prohibitive to implement at scale except for the largest governmental use cases. Dynamic slicing creation and management requires network observability, jointly with near real time capacity prediction, reservation, and attribution. 

This is where AI can provide the missing step to enable dynamic slicing for network as a service. If you can extract data from the user device, network telemetry and functions fast enough to be made available to algorithms for pattern identification in near real time, you can identify the device, user, industry, service and create the best fit connectivity, whether for a gaming console connected to a 4K TV in FWA, a business user on a video conference call, industrial collaborating robots assembling a vehicle, or a drone delivering a package.

All these use cases have different connectivity needs that are today either served by best effort undifferentiated connectivity or rigidly rule-based private networks. 

As 6G is starting to emerge, will it fulfil the 5G promises and deliver curated connectivity experiences?

Rant: Why do we need 6G anyway?

I have to confess that, even after 25 years in the business, I am still puzzled by the way we build mobile networks. If tomorrow we were to restart from scratch, with today's technology and knowledge of the market, we would certainly design and deploy them in a very different fashion.

Increasingly, mobile network operators (MNOs) have realized that the planning, deployment and management of the infrastructure is a fundamentally different business than the development and commercialization of the associated connectivity services. They follow different investment and amortization cycle and have very different economic and financial profiles. For this reason, investors value network infrastructure differently from digital services and many MNOs have decided to start separating their fibre, antennas, radio assets from their commercial operation.

This has resulted in a flurry of splits, spin off, divestiture and the growth of tower and infrastructure specialized companies. If we follow this pattern to its logical conclusion, looking at the failed economics of 5G and the promises of 6G, one has to wonder whether we are on the right path.

Governments keep treating spectrum as a finite, exclusive resource, whereas as private networks and unlicensed spectrum demand is increasing, it is clear that there is a cognitive dissonance in the economic model. If 5G's success was predicated on enterprise, industries and verticals connectivity and if these organizations have needs that cannot be satisfied by the public networks, why would MNOs spend so much money on a spectrum that is unlikely to bring additional revenue? The consumer market does not need another G until new services and devices emerge that mandate different connectivity profiles. Metaverse was a fallacy, autonomous vehicles, robots... are in their infancy and workaround the lack of connectivity adequacy by keeping their compute and sensors on device, rather than at the edge.

As the industry prepares for 6G and its associated future hype and non sensical use cases and fantastical services, one has to wonder how can we stop designing networks for use cases that never emerge as dominant, forcing redesigns and late adaptation. Our track record as an industry is not great there. If you remember, 2G was designed for voice services. Texting was the unexpected killer app. 3G was designed for Push to talk over Cellular, believe it or not (remember SIP and IMS...) and picture messaging early browsing were successful. 4G was designed for Voice over LTE (VoLTE) and video / social media were the key services. 5G was supposed to be designed for enterprise and industry connectivity but failed to deliver so far (late implementation of slicing and 5G Stand Alone). So... what do we do now?

First, the economic model has to change. Rationally, it is not economically efficient for 4 or 5 MNOs to buy spectrum and deploy their separate networks to cover the same population. We are seeing more and more network sharing agreements, but we must go further. In many countries, it makes more sense to have a single neutral infrastructure operator, including the cell sites, radio, the fiber backhaul even edge data centers / central offices all the way but not including the core. This neutral host can have an economic model based on wholesale and the MNOs can focus on selling connectivity products.

Of course, this would probably suppose some level of governmental and regulatory overhaul to facilitate this model. Obviously, one of the problems here is that many MNOs would have to transfer assets and more importantly personnel to that neutral host, which would undoubtedly see much redundancy from 3 or 4 teams to one. Most economically advanced countries have unions protecting these jobs, so this transition is probably impossible unless a concerted effort to cap hires / not renew retirement departures / retrain people is effected over many years...

The other part of the equation is the connectivity and digital services themselves. Let's face it, connectivity differentiation has mostly been a pricing and bundling exercise to date. MNOs have not been overly successful with the creation and sale of digital services, the emergence of social media, video streaming services having occupied most of the consumer's interest. On the enterprise's side a large part of the revenue is related to the exploitation of the last mile connectivity, with the sale of secure private connections on public networks in the form of MPLS first then SD-WAN to SASE and cloud interconnection as the main services. Gen AI promises to be the new shining beacon of advanced services, but in truth, there is very little there in the short term in terms of differentiation for MNOs. 

There is nothing wrong with being a very good, cost effective, performant utility connectivity provider. But most markets can probably accommodate only one or two of these. Other MNOs, if they want to survive, must create true value in the form of innovative connectivity services. This supposes not only a change of mindset but also skill set. I think MNOs need to look beyond the next technology, the next G and evolve towards a more innovative model. I have worked on many of these, from the framework to the implementation and systematic creation of sustainable competitive advantage. It is quite different work from standards and technology evolution approach favored by MNOs but necessary for these seeking to escape the utility model.

In conclusion, 6G or technological improvements in speed, capacity, coverage, latency... are unlikely to solve the systemic economical and differentiation problem for MNOs unless more effort is put on service innovation and radical infrastructure sharing.