TU Berlin

Service-centric NetworkingSchwenke, P. (2012). Supporting Power Management Concepts in Mobile Networks through USAT/JavaCard. Master Thesis, Technische Universität Berlin


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Master Thesis: Supporting Power Management Concepts in Mobile Networks through USAT/JavaCard

Supporting Power Management Concepts in Mobile Networks through USAT/JavaCard

Modern radio networks, such as WiFi, UMTS, or LTE provide good connectivity and high data transfer rates to the mobile user 24 hours a day, 7 days a week. In order to fulfill these requirements, mobile network providers in Germany have around 123.000 base stations working 24/7 with a total power consumption of approx. 1455 GWh per year. However, these capacities are not always fully utilized, e.g. in rural areas or at night. Energy can be saved in radio access and core networks by dynamically de- and reactivating network components, such as base stations, based on a certain information basis gained from the network and end devices, or by adaptively reconfiguring the network to the user's needs.

There is a lot of contextual information present in today’s smartphones, which can be exploited for an adaptive power management by implementing dedicated client applications. However, due to the diversity of mobile end devices subscribed to the mobile network, it is quite impossible to consider all mobile users when developing such a power management. The UMTS SIM Application Toolkit or JavaCard provides potentials to avoid this problem since it allows the implementation of value-added services on the SIM card that can acquire different information from the network regardless of the mobile phone in use.

The main objective of this thesis is to analyze the capabilities of the USAT as well as the JavaCard and to develop applications on them that provide a useful addition to the overall context-aware power management. Examples could be an icon showing the energy saving mode, which can be deactivated when more capacity is needed. The following questions are examples of interest for this thesis:

  • What are the capabilities of USAT/JavaCard in order to support the power management in mobile networks?
  • What kind of contextual information can be extracted by the USAT/JavaCard?
  • In which way can the USAT/JavaCard intelligently interact with the mobile network?


  • Strong practical relevance (implementation on the UMTS SIM Application Toolkit and JavaCard)
  • Optimization of the mobile network based on contextual information from the USAT/JavaCard


  • Proficiency in software development (concept and implementation)
  • Ideally a strong knowledge of radio technologies
  • Interest to work in the field of Green ICT and Context-aware Computing

Supervisor: , ,

Type: Master Thesis

Duration: 6 months



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