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SAPHYRE Sharing Physical Resources – Mechanisms and Implementations for Wireless Networks

The SAPHYRE (Sharing Physical Resources – Mechanisms and Implementations for Wireless Networks) project starts January 2010 and is a STREP funded by the European Union within framework program seven (FP7-ICT-248001).

In current wireless communications, radio spectrum and infrastructure are typically used such that interference is avoided by exclusive allocation of frequency bands and employment of base stations. SAPHYRE will demonstrate how equal-priority resource sharing in wireless networks improves spectral efficiency, enhances coverage, increases user satisfaction, leads to increased revenue for operators, and decreases capital and operating expenditures.

SAPHYRE represents a consortium that spans the entire chain from spectrum regulatory aspects, networking, physical layer to hardware implementation. The vision of SAPHYRE is to:

  1. show how voluntary sharing of physical and infrastructure resources enables a fundamental, order-of-magnitude-gain in the efficiency of spectrum utilisation;
  2. develop the enabling technology that facilitates such voluntary sharing;
  3. determine the key features of a regulatory framework that underpins and promotes such voluntary sharing.

SAPHYRE’s main objectives are conceptually described as:

  1. SAPHYRE analyses and develops new self-organising physical layer resource (spectrum, spatial coexistence) sharing models by a generalised cross-layer and cross-disciplinary approach.
  2. SAPHYRE proposes and analyses efficient co-ordination mechanisms which require only small intervention (to counteract selfish, malicious users). In particular in sharing scenarios, incentive based design is applied in order to reduce regulatory complexity.
  3. SAPHYRE develops a framework for infrastructure sharing to support quality of service with sufficiently wide carrier bandwidths and competition between different operators.


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