Centralized Joint Cell Selection and Scheduling for Improved URLLC Performance

  • Mogensen P.
  • Pedersen K.
  • Steiner J.

A centralized joint cell selection and scheduling policy for ultra-reliable low latency communication (URLLC) is studied in this paper for the 5G new radio (NR). A low complexity cell association and scheduling algorithm is proposed, while maintaining attractive performance benefits. By being able to centrally control from which cells the ...

On the Complexity of Restoring Corrupted Colorings

In the probrFix problem, we are given a graph $G$, a (non-proper) vertex-coloring $c : V(G) to [r]$, and a positive integer~$k$. The goal is to decide whether a proper $r$-coloring $c'$ is obtainable from~$c$ by recoloring at most $k$ vertices of $G$. Recently, Junosza-Szaniawski, Liedloff, and Rz{k{a}}{.z}ewski [SOFSEM 2015] ...

Fast Small Cell Access

Offloading traffic to small cells is one of the key enablers in achieving high peak data rates in a heterogeneous cellular network deployment. However, to maintain the benefit of robust mobility offered by the macro cell layer, ideally the connection to the macro cell is still maintained even when bulk ...

Idle Mode Measurements to Enable Fast Small Cell Access without Compromising Energy Efficiency

Offloading traffic to small cells is one of the key enablers in achieving high peak data rates in a heterogeneous cellular network deployment. In this paper, we introduce and evaluate a solution to significantly speed up the small cell access in LTE or NR based on UE performing additional small ...

Temporal Filter Parameters for Motion Pattern Maps

  • O'Gorman L.

There are many video analysis applications in which the flow of people or traffic over time is of more interest than tracking the discrete objects contained. Motion pattern maps, loosely called heat maps, can show accumulated activity over time via temporal filtering. In this paper, we examine three parameters that ...

vNS: a modular programmable virtual network switch

  • Gallo M.
  • Pianese F.

Virtual software switches are evolving: from simple communication facilities connecting virtual machines to the outside network, they are growing into complex subsystems supporting an increasing number of functionalities at multiple network layers. In line with recent trends introducing stateless and stateful processing in virtual switches, we present in this poster ...

Saccadic eye movements estimate prolonged time awake

  • Gould Kristian
  • Haeggstrom Edward
  • Muller K.
  • Pettersson Kati
  • Tietavainen Aino

This study describes for the first time that the length of overall time awake of a person can be estimated by analysing eye movements that have been measured with electro-oculography in a saccade task repeatedly up till 54 hours. Fatigue and fluctuation of vigilance is one of the main causes ...

NOKIA Bell Labs & ION demonstrate ODTN phase 1.0 at Telefónica Lab

  • Atkinson G.
  • Pham Van Q.
  • Tancevski L.
  • Thottan M.
  • Verchere D.

NOKIA Bell Labs and ION realized and demonstrated with Telefónica at Telefonica Lab ODTN project phase 1.0 realization involving the configuration and control of NOKIA transponders with the capabilities of OpenConfig/NETCONF agent and with ONOS Controller integrating NOKIA device NETCONF drivers at its South Bound Interface and Transport API (TAPI) ...

Effect of mutual coupling between feed elements on integrated lens antenna performance

  • Ala-Laurinaho J.
  • Karki S.
  • Valkonen R.
  • Viikari V.

An integrated lens antenna (ILA) equipped with a beam-switching array feed provides beam-steering. This study investigates the effects of the mutual coupling between the feed array elements on the ILA performance. A simulation study of an ILA with two different feed types with varying mutual coupling levels is done. Radiation ...

NP-completeness results for partitioning a graph into total dominating sets

  • Lauri J.
  • Mikko Koivisto
  • Petteri Laakkonen

A emph{total domatic k-partition} of a graph is a partition of its vertex set into k subsets such that each intersects the open neighborhood of each vertex. The maximum k for which a total domatic k-partition exists is known as the total domatic number of a graph G, denoted by ...

End-to-end Deep Learning of Optical Fiber Communications

  • Buelow H.
  • Chagnon M.
  • Domanic Lavery
  • Felix Thouin
  • Karanov B.
  • Polina Bayvel
  • Schmalen L.
  • Tobias A. Eriksson

We implement the optical fiber communication system as an end-to-end deep neural network, which includes the complete chain of transmitter, receiver and channel. This approach allows transceiver functions to be optimized in a single end-to-end process. Our work shows that such a deep learning fiber-optic system can achieve reliable communication ...

Field Measurement for Antenna Configuration Comparison in Challenging NLOS Locations

  • Erkkila J.
  • Heikkila J.
  • Heikkila M.
  • Kippola T.
  • Koskela M.
  • Kupiainen T.
  • Migliore M.
  • Nykanen A.
  • Saukkonen R.
  • Tervonen J.

IEEE This paper has two main objectives. First, it describes the practical challenges of field trials and proposes a developed test method. Second, the test method is used to compare the uplink (UL) performance with different antenna technologies when user equipment (UE) does not have a line of sight (LOS) ...

Spectrum Allocation with Flexible Frame Structure

This paper explores the potential of allocating spectrum resource under flexible frame structure for accommodating services with different types of requirements. Computational complexity is rigorously analyzed. A scalable algorithm is proposed based on searching in both primal space and dual space, which are shown to be complementary to each other ...

Phase-sensitive amplifier link with distributed Raman amplification

  • Andrekson P.
  • Astra E.
  • Benjamin F.
  • Eliasson H.
  • Karlsson M.
  • Olsson S.
  • Vijayan K.

© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement We demonstrate long-haul transmission using a hybrid amplifier approach combining distributed Raman amplification and lumped phase-sensitive amplification. Aside from the well-known resulting SNR improvement, distributed Raman amplification is included in an effort to improve ...

Effect of Backhaul Constraints on Uplink Femtocell Networks

  • Jalali S.
  • Poor V.
  • Zeinalpour-Yazdi Z.

IEEE One promising approach to expand the coverage and enhance the performance of cellular networks is to employ multi-tier cellular networks. In this paper, an uplink two-tier communication network is studied, in which macro users, femto users and femto access points are geometrically located inside the coverage area of a ...

Guest Editorial: Optical Networks Supporting Interoperability and White Boxes

  • Bigo S.
  • Sambo N.
  • Schmidtke H.
  • Shaikh A.
  • Suzuki M.
  • Tomkos I.

Forced convection in the wakes of impacting and sliding bubbles

  • Donnelly B.
  • Murray D.
  • Nolan K.
  • O'Reilly Meehan R.
  • Persoons T.
  • Williams N.

Both vapour and gas bubbles are known to significantly increase heat transfer rates between a heated surface and the surrounding fluid, even with no phase change. The cooling structures observed are highly temporal, intricate and complex, with a full description of the surface cooling phenomena not yet available. The current ...

Preface to the Special Issue on Data Center Communications

  • Earnshaw M.
  • Li M.
  • Petropoulos P.
  • Vusirikala V.

Fast flow volume estimation

  • Ben Basat R.
  • Einziger G.
  • Friedman R.

The increasing popularity of jumbo frames means growing variance in the size of packets transmitted in modern networks. Consequently, network monitoring tools must maintain explicit traffic volume statistics rather than settle for packet counting as before. We present constant time algorithms for volume estimations in streams and sliding windows, which ...

Parametric analysis of laminar pulsating flow in a rectangular channel

  • Alimohammadi S.
  • Blythman R.
  • Jeffers N.
  • Murray D.
  • Persoons T.

Pulsating flow has potential for enhanced cooling of future electronics and photonics systems. To better understand the mechanisms underlying any heat transfer enhancement, it is necessary to decouple the mechanical and thermal problems. The current work performs a parametric analysis of the flow hydrodynamics using particle image velocimetry (PIV) measurements, ...