• Tuesday, 13 June, 11:30-13:00, Room Theatre Small Stage
  • Session Chair: Klaus Doppler (Nokia, Finland)



11:30 On the Performance of Video Streaming in Energy-Aware Wireless Mesh Networks

Yong Yao, Adrian Popescu and Markus Fiedler (Blekinge Institute of Technology, Sweden); Rickard Ljung (Sony Mobile, Sweden)

Mobile multimedia has today become a promising application for end users and service providers. With reference to the existing systems for mobile communications, this application further demands for solving several technical problems, especially regarding video streaming over wireless networks. An interesting approach is in form of Wireless Mesh Network (WMN) based networks, where the individual video flows operate in an end-to-end (e2e) manner along a particular networking scenario including several mesh routers. That means, a particular mesh router may be traversed by multiple video flows. This situation may become even more complicated in the case of a large amount of packet retransmissions, which may deteriorate the performance of video flows. To investigate this problem, a two-level Modulated Markov Poisson Process (MMPP) based queueing model is built up and the transport performance of e2e video streaming in WMN based mobile multimedia system is analysed. Four metrics are used to study the system performance, namely e2e throughput, e2e delay, e2e error-rate and traffic-related energy consumption. Numerical analysis and evaluation studies are done. Based on the reported results, two different solutions are suggested and discussed with regard to the trade-off among these metrics.


11:48 Multi-service SDN Controlled Reconfigurable Long-Reach Optical Access Network

Giuseppe Talli (Tyndall National Institute, University College Cork, Ireland); Stefano Porto, Daniel Carey, Nicola Brandonisio, Alan Naughton, Peter Ossieur and Paul Townsend (Tyndall National Institute, Ireland); Rene Bonk and Thomas Pfeiffer (Alcatel-Lucent, Germany); Frank Slyne (Connect Research Centre - Trinity College Dublin, Ireland); Séamas McGettrick (University of Dublin, Trinity College, Ireland); Christian Bluemm (CONNECT at Trinity College Dublin, Ireland); Marco Ruffini and Alan Hill (CTVR, Trinity College Dublin, Ireland); David B Payne (Trinity College Dublin, United Kingdom (Great Britain)); Nick Parsons (Polatis Ltd., United Kingdom (Great Britain))

The convergence of multiple service demands and different user types on a single physical layer can be enabled by dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs). In this paper we demonstrate two TDM-DWDM PON designs, the first one for densely populated urban areas and the second one better suited for rural deployment. Heterogeneous services and modulation formats, i.e. residential 10G PON channels, business 100G dedicated channel and wireless fronthaul are demonstrated experimentally co-existing on long reach TDM-DWDM PON systems, with at least 100km reach, 1024 users and emulated system load of 40 channels. End-to-end software defined networking (SDN) management of the access and core network elements is also implemented and integrated with the PON physical layer in order to demonstrate two service use cases: a fast protection mechanism with end-to-end service restoration in the case of a primary link failure; and dynamic wavelength allocation (DWA) in response to an increased traffic demand.


12:06 5G Transport Network Blueprint and Dimensioning for a Dense Urban Scenario

Ilker Demirkol (Universitat Politecnica de Catalunya, Spain); Daniel Camps (i2CAT, Spain); Jens Bartelt (Technische Universität Dresden, Germany); Jim Zou (ADVA Optical Networking, Germany)

In this paper, we provide a quantitative evaluation of the deployment aspects and dimensioning of the 5G transport architecture in a representative European city. In particular, we select an example dense urban city scenario based on the city of Barcelona, and illustrate how the transport network architecture defined by the 5G-XHaul project can be deployed in that environment. Building on the case of Barcelona, we discuss physical deployment aspects, such as the locations to deploy small cells, how many compute facilities should be scattered throughout the city, or where the control plane functions should be deployed. In addition, we provide a quantitative evaluation of the 5G-XHaul deployment in Barcelona, including the bandwidth required at the different segments of the architecture, i.e. the wireless segment, the WDM-PON access network, and the TSON metro network. We also evaluate control plane aspects, such as the number of 5G-XHaul SDN controllers required for a city like Barcelona.


12:24 Statistical Multiplexing in Fronthaul-Constrained Massive MIMO

Jay Chaudhary, Jens Bartelt and Gerhard Fettweis (Technische Universität Dresden, Germany)

Despite the promising benefits of the cloud-radio access network (C-RAN), the fronthaul (FH) imposes stringent requirements in terms of data rate, latency, jitter and synchronisation. In the classical C-RAN, the FH capacity scales linearly with the number of the transmitting antennas, which has posed severe demands on the FH capacity, especially due to emerging 5G technologies such as massive MIMO. However, this can be relaxed by performing precoding at the remote radio units (RRUs) instead of centrally, leading to FH traffic which depends on the number of currently served users. This paper adapts queueing theory and spatial traffic models to derive statistical multiplexing gain enabled by varying number of user streams. Through this, we showed that the required FH capacity can be reduced dramatically, depending on traffic demand and its statistical properties.


12:42 The ADRENALINE Testbed: An SDN/NFV Packet/Optical Transport Network and Edge/Core Cloud Platform for End-to-end 5G and IoT Services

Raul Muñoz (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); Laia Nadal Reixats (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Spain); Ramon Casellas (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); Michela Svaluto Moreolo (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Spain); Ricard Vilalta (CTTC/CERCA, Spain); Josep M. Fabrega (Centre Tecnologic de Telecomunicacions de Catalunya, Spain); Ricardo Martinez (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); Arturo Mayoral (CTTC/CERCA, Spain); Francisco Javier Vílchez (Centre Tecnològic de Telecomunicacions de Catalunya, Spain)

The fifth generation of mobile networks (5G) and the internet of Things (IoT) impose very stringent requirements to the optical transport networks. On the one hand, high flexibility, ultra-low latency and high capacity, in order to support the forecasted 1000x growth in mobile data traffic with latencies below millisecond. On the other hand, massive edge and core cloud infrastructure integrated with the transport network to dynamically deploy NFV, MEC, and IoT analytics. This paper presents ADRENALINTE testbed, an SDN/NFV packet/optical transport network and edge/core cloud platform for end-to-end 5G and IoT services.