The 5G Migration That’s Already Happening: RAN Vendors Launching 5G-Era Base Stations

Ed Gubbins – Senior Analyst, Mobile Access Infrastructure

Summary Bullets:

  • New base station introductions in the run-up to 5G pose challenges depending on both their timing relative to competitors’ moves and their messaging relative to legacy products.
  • All major RAN vendors have faced challenges unveiling new base stations recently, including Huawei, which was forced to make big changes in response to shifting market demands.

Everywhere you look, people are talking about the coming migration to 5G mobile networks. A much less talked about – but perhaps no less challenging – transition is the one radio access network (RAN) equipment vendors are making from base stations that were optimized for LTE to ones designed to lead operators into the 5G era. Yet, in the waiting period before 5G’s true arrival, marketing new base stations aimed at future networks alongside the current generation of base stations is a balancing act akin to stepping from an unmoored boat to a pier.

At Mobile World Congress earlier this year, Huawei promoted a new baseband unit that it had already been marketing quietly for several months. The vendor claimed that the BBU5900, part of the broader CBS5900 base station, would embody the CloudRAN vision of 5G networks that Huawei had set forth in 2016, in that it was software-upgradeable to a split architecture with virtualized control functions. In other words, some control functions could be run on commodity servers, whether Huawei’s or another vendor’s, driving down costs and increasing network efficiency by centralizing the coordination of large numbers of radios.

At Mobile World Congress and in conversations thereafter, Huawei said the new base station would be available at the end of 2017, though the vendor had previously indicated availability starting Q4 2016. As for when exactly that vRAN upgrade option in particular would be available, it was tough to get a firmer answer than “after 2017.”

As 2017 progressed, Huawei eventually revealed that market requirements had changed as it was developing the CBS5900 and the operators (or operator) which had expressed interest in that partially virtual architecture had subsequently had second thoughts.

This summer, Huawei began marketing (quietly, again) a new base station: the BTS5900 (or, in main/remote form, the DBS5900), which uses the same BBU5900 debuted at MWC, with increased capacity and other features – but without those split-off virtualized control functions. The new gear is compelling, to be sure, but doesn’t amplify the CloudRAN story so central to Huawei’s 5G messaging the way the CBS5900 did (the ‘C’ stood for ‘cloud,’ after all).

Of course, Huawei isn’t alone in facing the hurdles of introducing and messaging a new base station in the run-up to 5G:

These moves have highlighted a few lessons that may be applied to similar network infrastructure solution transitions:

  • Piecemeal Can Be Practical. A solution doesn’t have to be complete to move forward. Ericsson introduced the ERS first, then added 5G software plug-ins a year later, and later still radio hardware to complement it all. Nokia claimed AirScale was ‘5G-ready’ based on the idea that a few core attributes could meet that definition, with the finer points fleshed out over time.
  • Message Timing Tradeoffs. Each vendor’s messaging should claim advantageous timing. Earlier solutions indicate thought leaders and are more mature and proven. Those that come next leapfrog the thought leaders in terms of capabilities. Those that come last leapfrog again while offering maximum lifespans for legacy gear.
  • Don’t Neglect Legacy Portfolio. No one wants their technology investments to become obsolete too early. Continuing to enhance existing products is worth it, even if it crowds claims that the new gear is superior; effective messaging can remedy this dilemma, and a compelling long-term evolution story is key.
  • The Market Can Change Its Mind. Focusing too much on a single attribute or concept can be differentiating but risky if operator sentiment shifts. The power of new technologies can be dulled if the market isn’t quite ready for them yet.

About Ed Gubbins
Ed serves as Senior Analyst for Mobile Access Infrastructure in the Current Analysis Service Provider Infrastructure Group. He focuses on tracking, analyzing and reporting on developments impacting mobile infrastructure and mobile networking: 2G and 3G RAN and packet core along with, LTE, metro-scale Wi-Fi and WiMAX.

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