May 01, 2017

distributed channel probing and sequential access for ultra dense networks: joint spectrum- and energy-aware design

  • Cai L.
  • Guo H.

Ultra dense network (UDN) with universal resource reuse capability is recognized as a promising technology for 5G. In this paper, we advance a distributed channel probing and sequential access (DISCO-SEA) scheme for UDNs, which enables an autonomous procedure for network expanding by blending receiver-transmitter pairing, interference avoidance, spectrum sharing, power control, and admission control. The autonomous network expansion is carried out through spectrum-aware channel probing and energy-aware receiver-transmitter pairing, which are performed under a distributed recursive power computation framework based on power updating factors. In particular, the channel probing is designed to check expandability, whereby a closed-loop cognitive mechanism is resorted to exactly predict the surplus capacity an active network reserved for the unserved users. The active network accommodate the new link in favor of energy efficiency so that the expanded network can leave as much capacity margin for the next expansion as possible. Accordingly, an active network can be scaled up by continuously adding new links in a sequential manner. DISCO-SEA promises a joint spectrum- and energy-efficient UDN towards optimizing the system performance and guaranteeing individual minimum performance. Also, the recursive power computation is developed with a computation-aware signaling strategy, allowing for computation-information reuse and significant reduction in signaling overhead, computation time, and memory amount.

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...