Moscow. Yota and Jet Infosystems have introduced a dynamic traffic management system based on DPI  Procera and Jet Subscriber Manager (JSM ). The system analyzes traffic content to optimize bandwidth distribution among services and improve customer experience.
Yota is the leading mobile LTE network operator in Russia. With an ever-increasing number of subscribers, the company was facing fast growth in traffic. Yota decided to pre-empt network congestion by optimizing traffic. A call for tenders to install a DPI-based system was won by Jet Infosystems.
A pilot DPI Procera system was installed in St. Petersburg to analyze network traffic structure in terms of various services, particularly interactive ones.
In order to manage service priorities and control network congestion the system was integrated with Yota’s PCRF . While DPI inspects content for services only, the PCRF always has current information on network status due to its direct connection to the LTE network and the base station subsystem. JSM software was used as an interface for this integration.
A joint project team has developed and set up a network management model based on over a thousand rules. The main principle was that interactive services should have a priority access to bandwidth, while other services should remain stable.
At the final stage a mechanism was implemented to manage base stations in an overload situation. If the load reaches their full capacity, PCRF orders the DPI system to use supplementary traffic prioritization instruments. Note that the traffic management system features real-time adaptation to changing circumstances (the number of users, signal weakening in bad weather, noise or interference from neighboring stations or buildings, etc.) to improve the quality of service.
The solution was reproduced in Moscow, Sochi, Samara, Krasnodar, Vladivostok and Novosibirsk. Region-specific prioritization models were based on local statistics and bandwidth consumption patterns. Since work in different locations was going simultaneously, the project took just 8 months to complete.
“The new system has significantly improved customer experience by means of dynamic adaptation to current network status, - sums up Andrey Nesterov, director of technology at Yota. – It has also increased the network capacity so we can save on investment in the expansion of external channels.”
“The ratio between various types of content may change in individual regions as well as in general. Moreover, Yota regularly comes up with new tariff plans, - notes Andrey Yashin, business development manager at Jet Infosystems.– It means that our algorithms need to be updated on a regular basis. Therefore we continue to work with Yota on the optimization of internet access scenarios.”
Yota is a telecom company, of the largest 4G mobile operators in the world. In the fall of 2008 Yota became one of the first companies in the world to deploy a WiMAX standard network (in Moscow and St. Petersburg). Two years later Yota announced plans to launch an LTE network. The innovative LTE standard is much faster than its predecessors and provides internet access at a rate of up to 20 Mbit/s. Yota currently operates 4G networks in Kazan, Kostroma, Krasnodar, Moscow, Novosibirsk, Samara, Sochi, St. Petersburg , Tula, Ufa, Vladimir and Vladivostok. By 2014 LTE is expected to arrive to 180 Russian cities. In October 2012 Yota was the first company in the world to launch the LTE Advanced mobile technology that can deliver data at a speed of up to 300 Mbit/sec.
 DPI (Deep Packet Inspection) is a technology of collecting statistics, examining and filtering network packets by their content. It is used to manage bandwidth, change priorities and transmission speed of various types of traffic at the level of applications and protocols.
 JSM (Jet Subscriber Manager) – superior solution that allows operators to establish user-specific traffic management policies that solve all three fundamental business challenges: revenue generation, cost reduction, customer loyalty and churn control.
 PCRF (Policy and Charging Rules Function) – a component of LTE cellular networks that deals with charging for telecom services and determines connection quality for specific subscribers in accordance with their personal profiles.
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