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Off-loading the aggregation networks by locality-aware peer-to-peer based content distribution
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (NEGONET)ORCID iD: 0000-0003-2004-3350
(ACREO AB)
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (NEGONET)
(ACREO AB)
Show others and affiliations
2011 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Field measurements show that more than half of the Internet traffic could be able to take advantage of the local data storage and distribution by utilizing the peer–to–peer (P2P) technique, which in many cases can offer higher scalability and lower price than the client–server based applications. However, typically Internet service providers (ISPs) are limiting P2P applications, because P2P traffic may unnecessarily travel through areas managed by other ISPs and hence cause additional cost when transmitting outside the ISP’s network. In this paper we employ a locality–aware content fetching strategy for the P2P application and investigate the influence of systems utilizing locally stored content on the traffic load distribution between core, metro and access networks. Moreover, we quantitatively evaluate the improvement of the resource utilization in an access network along with the inter–ISP bandwidth saving. Our simulation results show that using locality aware content fetching in access network can reduce traffic loads in the metro and core networks by keeping it closer to the access via local bridging. The big amount of localized P2P traffic in the access network may introduce a new challenge for next generation access networks to cost–efficiently handle the local traffic.

Place, publisher, year, edition, pages
2011.
Keyword [en]
peer–to–peer (P2P) application, locality–aware content fetching scheme, traffic locality
National Category
Communication Systems
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-86275OAI: oai:DiVA.org:kth-86275DiVA: diva2:500570
Conference
Asia Communications and Photonics Conference, November 2011, Shangai, China
Funder
ICT - The Next Generation
Note
QC 20120131Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2015-03-20Bibliographically approved
In thesis
1. Transport Solutions for Future Broadband Access Networks
Open this publication in new window or tab >>Transport Solutions for Future Broadband Access Networks
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

“Connected society” where everything and everyone are connected at any time and on any location brings new challenges for the network operators. This leads to the need of upgrading the transport networks as the segment of Internet infrastructure connecting the fixed users and mobile base stations to the core/aggregation in order to provide high sustainable bandwidth, as well as supporting a massive number of connected devices. To do this, operators need to change the way that access networks are currently deployed. The future access network technologies will need to support very high capacity and very long distances, which are the inherited characteristics of optical transmission. Hence, optical fiber technology is recognized as the only future proof technology for broadband access.

Capacity upgrade in the access networks can lead to a huge capacity demand in the backbone network. One promising solution to address this problem, is to keep the local traffic close to the end users as much as possible, and prevent unnecessary propagation of this type of traffic through the backbone. In this way, operators would be able to expand their access network without the significant capacity upgrade in the higher aggregation layers. Motivated by this need, a comprehensive evaluation of optical access networks is carried out in this thesis regarding ability of accommodating local traffic and amount of possible saving in the backbone by implementing locality awareness schemes.

Meanwhile, next generation optical access (NGOA) networks have to provide high capacity at low cost while fulfilling the increasing reliability requirements of future services and customers. Therefore, finding cost-efficient and reliable alternative for future broadband access is one of the most important contributions of this thesis. We analyzed the tradeoff between the cost needed to deploy backup resources and the reliability performance improvement obtained by the proposed protection mechanism.

Among different NGOA architectures, hybrid time and wavelength division multiplexing passive optical network (TWDM PON) is considered as a proper candidate providing high capacity and large coverage. Therefore, this approach is further analyzed and several tailored protection schemes with high flexibility are proposed to statisfy different requirements from the residential and business users in the same PON.  The work carried out in the thesis has proved that TWDM PON can also offer high reliability performance while keeping the network expenditures at an acceptable level. Considering some other advantages such as low power consumption and high flexibility in resource allocation of this architecture, it has high potential to be the best candidate for NGOA networks.

 Moreover, new deployments of radio access networks supporting the increasing capacity demand of mobile users lead to the upgrade of the backhaul segment as a part of broadband access infrastructure. Hence, this thesis also contributes with a comprehensive techno-economic evaluation methodology for mobile backhaul. Several technologies are investigated in order to find the most cost-efficient solution for backhauling the high capacity mobile networks.  Finally, a PON-based mobile backhaul with high capacity and low latency has been proposed for handling coordinated multipoint transmission systems in order to achieve high quality of experience for mobile users. 

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. xii, 80 p.
Series
TRITA-ICT-COS, ISSN 1653-6347 ; 1501
Keyword
Optical access network, mobile backhaul, techno-economic, reliability
National Category
Communication Systems
Research subject
Information and Communication Technology
Identifiers
urn:nbn:se:kth:diva-161936 (URN)978-91-7595-450-9 (ISBN)
Public defence
2015-04-13, Sal B, KTH ICT Electrum, Kista, 10:00 (English)
Opponent
Supervisors
Note

QC 20150320

Available from: 2015-03-20 Created: 2015-03-19 Last updated: 2015-03-20Bibliographically approved

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