Change search
ReferencesLink to record
Permanent link

Direct link
Flexible and Programmable 5G Transport Networks
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Optical Network Laboratory (ON Lab).
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The advent of 5th generation of mobile networks (5G) will introduce some new challenges for the transport network. Different strategies can be employed by the network providers to address these challenges with the aim to achieve an efficient utilization of network resources. The most feasible option to achieve this goal is to introduce intelligence in the transport infrastructure by designing a flexible and programmable transport network.

Network function virtualization (NFV) and dynamic resource sharing (DRS) are two possible techniques for realizing a flexible transport network. NFV allows to dynamically push network functions to different locations in the network, while DRS allows for sharing transport resources in a flexible manner. Both of these strategies can be realized by employing a programmable control framework based on software defined networking (SDN), which has implications on both the network data and control planes. However, this thesis specifically focuses on the data plane aspects of NFV and the control plane aspects of DRS.

Considering the network caching as a specific example of network function, the data plane aspects of NFV are studied in terms of different architectural options for cache placement in order to see which options are the most efficient in terms of network power consumption and cost. The results presented in this thesis show that placing large-sized caches farther in the network for a large group of users is the most efficient approach.

The control plane aspects of DRS are analyzed in terms of which provisioning strategy should be used for sharing a limited amount of transport resources. The analysis is presented for both a single-tenant case (i.e., where the role of service and network provider is played by the same entity), and a multi-tenant case (i.e., where a network provider manages the resources assigned to different service providers in an intelligent way). The results show that DRS performs much better than the conventional static approach (i.e., without sharing of resources), which translates into significant cost savings for the network providers.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2016. , 43 p.
Series
TRITA-ICT, 2016:39
Keyword [en]
5G transport, network function virtualization, dynamic resource sharing, software-defined networking, centralized RAN, network virtualization.
National Category
Communication Systems
Research subject
Information and Communication Technology
Identifiers
URN: urn:nbn:se:kth:diva-196525ISBN: 978-91-7729-186-2OAI: oai:DiVA.org:kth-196525DiVA: diva2:1046770
Presentation
2016-12-19, Ka-Sal C (Sal Sven-Olof Öhrvik), Electrum, Kungl Tekniska högskolan, Kistagången 16, Kista, 10:00 (English)
Opponent
Supervisors
Note

QC 20161115

Available from: 2016-11-15 Created: 2016-11-15 Last updated: 2016-11-16Bibliographically approved
List of papers
1. Power and Cost Modeling for 5G Transport Networks
Open this publication in new window or tab >>Power and Cost Modeling for 5G Transport Networks
Show others...
2015 (English)In: 2015 17th International Conference on Transparent Optical Networks (ICTON), Budapest, Hungary: IEEE Computer Society, 2015, 7193533Conference paper (Refereed)
Abstract [en]

Optical 5G transport networks are the subject of academic and industrial research aimed at identifying the best architectural and deployment options. In this regard, the optimization of both power consumption and equipment cost is a crucial aspect. This paper analyses a number of architectural options (i.e., all optical vs. intermediate electronic processing, with and without network caching) for optical 5G transport networks, with the objective of understanding which alternatives are the most promising in terms of total power consumption and equipment cost. The analysis presented in the paper shows that 10 Gbps transmission equipment combined with optical switching guarantees the best overall performance. On the other hand, 100 Gbps transmission equipment combined with electronic processing and network caching is also a promising approach, especially in fiber scarce scenarios.

Place, publisher, year, edition, pages
Budapest, Hungary: IEEE Computer Society, 2015
Series
, International Conference on Transparent Optical Networks-ICTON, ISSN 2162-7339
Keyword
Optical 5G transport, fronthaul, power modeling, cost modeling, electronic switching, opticalswitching, network caching
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-166869 (URN)10.1109/ICTON.2015.7193533 (DOI)000380506700249 ()2-s2.0-84940933847 (ScopusID)978-1-4673-7880-2 (ISBN)
Conference
IEEE International Conference on Transparent Optical Networks (ICTON),Budapest, Hungary, July 5-9, 2015
Note

QC 20150616

Available from: 2015-05-20 Created: 2015-05-20 Last updated: 2016-11-15Bibliographically approved
2. Dynamic Resource Sharing for C-RANs with Joint Orchestration of Radio and Transport
Open this publication in new window or tab >>Dynamic Resource Sharing for C-RANs with Joint Orchestration of Radio and Transport
Show others...
2016 (English)Conference paper (Refereed)
Abstract [en]

We present a resource allocation strategy for centralized radio access network architectures able to adapt to the wireless network capacity requirements. Both simulation and emulation results show that it is possible to reuse up to 33.3% of the transport resources.

Place, publisher, year, edition, pages
VDE Verlag GmbH, 2016
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-194787 (URN)
Conference
42nd European Conference and Exhibition on Optical Communication (ECOC)
Note

QC 20161103

Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2016-11-15Bibliographically approved
3. Demonstration of Dynamic Resource Sharing Benefits in an Optical CRAN
Open this publication in new window or tab >>Demonstration of Dynamic Resource Sharing Benefits in an Optical CRAN
2016 (English)In: Journal of Optical Communications and Networking, ISSN 1943-0620, E-ISSN 1943-0639, Vol. 8, no 8, 621-632 p.Article in journal (Other academic) Epub ahead of print
Abstract [en]

The next generation of mobilecommunication (i.e., 5G) will bring new challengesfor the transport infrastructure, e.g. in terms offlexibility and capacity. The joint orchestration ofradio and transport resources can help to addresssome of these challenges. One example is thepossibility to reconfigure the use of the transportnetwork resources according to the spatial andtemporal variations of the wireless traffic patterns.Using the concept of dynamic resource sharing, alimited pool of transport resources can be sharedamong a large number of radio base stations (RBSs)thus reducing considerably the overall deploymentcost of the transport infrastructure.This paper proposes a provisioning strategy for acentralized radio access network (C-RAN) with anoptical transport whose wavelength resources can bedynamically shared among multiple RBSs. Theproposed strategy utilizes a hierarchical softwaredefined networking (SDN) control plane where aglobal orchestrator optimizes the usage of radio andtransport resources. The benefits of the proposedstrategy are assessed both by simulation and byexperiment via an optical data plane emulatordeveloped for this purpose. It is shown that thedynamic resource sharing can save up to 31.4% oftransport resources compared to a conventionaldimensioning approach, i.e., based onoverprovisioning of wavelength resources.

Place, publisher, year, edition, pages
IEEE Press, 2016
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-192994 (URN)10.1364/JOCN.8.000621 (DOI)000383862500009 ()2-s2.0-84980332083 (ScopusID)
Note

QC 20160923

Available from: 2016-09-23 Created: 2016-09-23 Last updated: 2016-11-15Bibliographically approved
4. Benefits of Programmability in 5G Transport Networks
Open this publication in new window or tab >>Benefits of Programmability in 5G Transport Networks
Show others...
2017 (English)Conference paper (Refereed)
Abstract [en]

This paper shows how programmability can improve operators’ revenues and it presents a dynamic resource slicing policy that leads to more than one order of magnitude better resource utilization levels than convectional (static) allocation strategies.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-196519 (URN)
Conference
IEEE/OSA Optical Fiber Communication Conference and Exposition (OFC), Los Angeles, USA, March 2017.
Note

QC 20161116

Available from: 2016-11-15 Created: 2016-11-15 Last updated: 2016-11-16Bibliographically approved

Open Access in DiVA

fulltext(2228 kB)55 downloads
File information
File name FULLTEXT01.pdfFile size 2228 kBChecksum SHA-512
46d64ec1544b5c5d3242f3f9f0ed2ba3e8bd9775a410139fd528b607375aee835e629ff8d950d7126e6418b0ea87dd2ed038796a7719c24f77b40c38d3c13863
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Raza, Muhammad Rehan
By organisation
Optical Network Laboratory (ON Lab)
Communication Systems

Search outside of DiVA

GoogleGoogle Scholar
Total: 55 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 238 hits
ReferencesLink to record
Permanent link

Direct link