Articles about Mobilу Networks

Hierarchical QoS on PCEF: How to Manage Service Priorities

A subscriber is downloading a torrent while making a call over a messaging app, but the other person's voice keeps cutting out, and then the call drops. They open YouTube, and the video keeps freezing to buffer. Naturally, the subscriber decides the operator's network is bad, even though the radio link and coverage have nothing to do with it: their own torrent has eaten up all the bandwidth available on their plan.

Scaling in a CUPS Architecture: How to Grow Without Disrupting Subscribers

When scaling the User Plane horizontally, new traffic-processing nodes are added to the cluster. But the entire traffic flow cannot simply be redistributed from scratch. Active sessions must retain their state and continue to be processed on the same node. Therefore, new connections and existing sessions are distributed according to different rules, while active sessions are migrated gradually. In this article, we explain why disruptions occur and how User Plane scaling works when increasing capacity does not come at the expense of inconvenience for individual subscribers.

CUPS for PCEF/PGW: why separate the Control Plane and User Plane in the mobile core

In an operator's network, session control and data transfer grow at different rates. The subscriber base adds a few percent a year, while traffic grows by tens of percent. If both functions live in a single node, they have to be scaled together, forcing the purchase of resources that may not actually be needed.

One server instead of a rack: the new Stingray PCEF processes up to 32 million sessions

VAS Experts' development team has increased the performance of the Stingray PCEF product. After optimization, the solution can process up to 110,000 requests per second while serving 32 million active sessions on a single server.

How have mobile tariffs changed, and where does PCEF fit in?

For an operator, the tariff has become a tool for managing demand, load, and revenue. Through the tariff grid, an operator can promote its own services, sell additional traffic, offer premium service priority, connect IoT devices, and put together corporate packages.

How We Deployed Our Own Mobile Operator Test Lab for Core Network Testing

The mobile core is an infrastructure where all components are tightly interconnected. Changes to a tariff plan can affect how the network processes subscriber traffic: which applications to account for, what to block. That is why many scenarios in mobile solution development cannot be fully tested in isolation.

How to Build a Mobile Operator in 2026

Business. "Why build one at all? Where’s the business? There are already plenty of operators, every subscriber has 10 SIM cards, and connectivity is cheap" — this is usually the reaction such an idea gets in 2026. Yet new operators keep emerging, and answering this question is exactly where you should start.

3GPP Compliance in Action: How VAS Experts' PGW Restored 4G Roaming in Australia

A modern MVNO operator specializing in eSIM sales for tourists operates in a highly competitive market. Its main asset is seamless internet connectivity for subscribers anywhere in the world. Instant profile activation, a stable signal, and predictable speed are the keys to the loyalty of thousands of travelers.

MNO and MVNO: How the mobile communications market has evolved

The modern mobile communications market has been shaped over many years, during which the structure of the industry has evolved and new operator models have emerged. In this article, we take a look at how the mobile sector has developed over the past 10–15 years.

Intelligent traffic management from VAS Experts: how PCEF and DPI combined with ML and AI make networks more efficient

A modern network consists of interconnected, congested transport nodes where data flows are heterogeneous, priorities conflict, and resources are limited. Without PCEF and DPI, videos from TikTok or YouTube compete for the same bandwidth as critical business applications. Corporate VPNs are forced to share the channel with torrent traffic, and potentially malicious encrypted traffic can easily masquerade as legitimate packets.