Universitat Politècnica de Catalunya - UPC

Simple and efficient systems for decentralized managing of neighboring femtocells

Posted by Universitat Politècnica de Catalunya - UPCResponsive · Patents for licensing · Spain

Summary of the technology

A procedure for the management of neighboring femtocells is proposed that guarantees efficient utilization of the available spectrum and, simultaneously, that the aggregate interference level as perceived by any of the femtocell users is kept below a given value. The technique is well suited to the initial configuration of a femtocell when integrated in an operational femtocell network. In addition, the protected invention includes a simple procedure for the pairwise optimization of the transmission rate and/or power of any pair of neighboring femtocells. Partners to further develop the system and/or to establish commercial agreements along with technical cooperation are sought.

Universitat Politècnica de Catalunya - UPC
Universitat Politècnica de Catalunya - UPC

The Challenge


Conventional solutions to the cooperative management of neighboring femtocells require the employment of a centralized management entity, which collects radio parameters from the neighboring femtocells and determines and communicates the required transmission configuration for each of them. The main limitation of such methods is the fact that any change in the radio parameters experienced by a single femtocell requires its notification to the centralized management entity and the reconfiguration of the transmission parameters of the plurality of the femtocells. Other existing solutions are decentralized and allow the self-configuration of femtocells when integrated in an existing femtocell network. However, owing to the lack of communication with the neighboring femtocells, these techniques cannot guarantee efficient utilization of the radio resources and, simultaneously, avoidance of performance degradation to the existing femtocell network. In fact these inventions might be affected by the hidden node problem, since no procedure is envisaged to control the level of the interference generated to the mobile units served by neighboring cells.

The Technology


The present invention circumvents the limitations of the existing technologies. The new technology provides a procedure for decentralized self-configuration of femtocells at startup that does not interfere with the existing operational femtocell network. Neighboring femtocells are given the possibility to set a maximum interference power allowed for each of their bonded users thus guaranteeing their seamless operation unaffected by the introduction of the new femtocell. Moreover, provides a procedure which can be used by mutual agreement of any pair of neighboring femtocells in order to reconfigure in a decentralized fashion their transmission parameters to benefit from increased transmission rate or reduced transmitted energy.

Current stage of development


Several embodiments related to the invention have been evaluated in the context of the LTE-A standard evolution.

Applications and Target Market


The technology could be of interest for companies devoted to the development of advanced femtocell base stations for LTE-A.

Innovative advantages


Simple procedure for descentralized femtocells Guarantees efficient utilization for the available spectrum.
Well suited to the initial configuration.
Allows the pairwise optimization of the transmission rate and/or power of any pair of nehgboring femtocells Control the level of the interference generated to the mobile units

Intellectual property status

Granted Patent
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Technology available for licensing with technical cooperation Patent Status ES and US priority patent application

Technology Owner

Universitat Politècnica de Catalunya - UPC

Technology Transfer Office

Related keywords

  • Electronics, IT and Telecomms
  • femtocells
  • neighboring femtocells

About Universitat Politècnica de Catalunya - UPC

Technology Transfer Office from Spain

The Universitat Politècnica de Catalunya - BarcelonaTech is a public institution dedicated to higher education and research in the fields of engineering, architecture and science, which contributes its knowledge and expertise in order to increase scientific output, transfer its results to society and provide a network of scientific and technical state-of-the-art facilities and technology valorization services that place us at the leading edge of innovation and economic development.

The UPC has established itself as a driver of innovation and is the technology partner of choice for companies and organizations with which it develops projects and builds partnerships. A role borne out by the numerous agreements and research projects that have been set in motion by groups, organizations and laboratories; the creation of new technology-based companies; the generation and exploitation of patents, and the scientific and technical services UPC makes available to its environment in order to generate progress and employment.

The Technology Transfer Office (SGI) is responsible of Designing, coordinating and implementing research valorisation strategies, carrying out the protection policy of the research results, marketing these results through license contracts and designing and setting up the University's enterprise creation model in order to transfer the results of the research to the market, protect and commercialize these results, promote the culture of entrepreneurship and innovation, and create technology-based companies within the UPC environment.

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