HetNet

Reference to a HetNet often indicates the use of multiple types of access nodes in a wireless network. A Wide Area Network can use macrocells, picocells, and/or femtocells in order to offer wireless coverage in an environment with a wide variety of wireless coverage zones, ranging from an open outdoor environment to office buildings, homes, and underground areas. Mobile Experts defines the HetNet as a network with complex interoperation between macrocell, small cell, and in some cases WiFi network elements used together to provide a mosaic of coverage, with handoff capability between network elements.

In handsets, device makers are grappling with new form factors and users interfaces as the phones original primary function, voice calls, falls to the wayside and the need to create a more immersive data experience comes to the forefront. New large-screened devices like Samsung’s Galaxy Note are blurring the distinction between smartphone and tablet, and my colleague Kevin Tofel believes that one day tablets will replace the smartphone entirely.

On the network side, carriers and their infrastructure vendors have begun realizing that the big tower-based macro-umbrella networks that fueled two decades of voice services aren’t going to cut it in a data-centric world. They’re designing new types of small cells and base stations intended to deliver intense levels of bandwidth over limited areas. Those small cell deployments will eventually evolve into the new heterogeneous network, or HetNet, which will transform cellular systems from coverage-to capacity-focused topologies. Today’s carrier networks have tens of thousands of cells. Future networks will hundreds of thousands if not millions of cells.

The next few years are going to be tumultuous as we negotiate these seismic shifts from mobile voice to mobile data and from the PC-centric to the mobile-centric Internet. Not every MVNO, app developer and infrastructure maker is going to make it. We’ve already seen a big shakeup on the equipment side (Nokia decline and the dissolution of Motorola and Nortel Networks), and the big incumbent mobile operators are struggling to understand their role in the mobile broadband age.