{"title":"Why are so many lines still reserved for emergency telephone calls in emergency situations?","authors":"K. Tanabe, S. Miyata, K. Baba, K. Yamaoka","doi":"10.1109/NETWKS.2014.6959249","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959249","url":null,"abstract":"We propose a threshold relaxation and holding time limitation for general telephone calls under trunk reservation control in emergency situations. This TR-HTL method aims to accept more general calls while required emergency calls are still accepted. Computer simulation with a queueing system model of a telephone exchange showed that the threshold relaxation increased the number of accepted general calls while still enabling the required number of emergency calls to be accepted. Comparison between two strategies to set the holding time limit of general calls showed that the value of the limit and the call-blocking rate are in a strong trade-off relationship when the limit is short. An investigation of the relationships between the threshold relaxation rate and the call-blocking rate showed that reserving just 5% of the estimated traffic intensity of emergency calls enabled the required number of emergency calls to be accepted, increasing the number of accepted general calls. Moreover, we showed that much fewer reserved lines are needed for guaranteeing emergency calls.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114615313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Salsano, N. Blefari-Melazzi, F. L. Presti, G. Siracusano, Pier Luigi Ventre
{"title":"Generalized virtual networking: An enabler for service centric networking and network function virtualization","authors":"S. Salsano, N. Blefari-Melazzi, F. L. Presti, G. Siracusano, Pier Luigi Ventre","doi":"10.1109/NETWKS.2014.6958523","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6958523","url":null,"abstract":"In this paper we introduce the Generalized Virtual Networking (GVN) concept. GVN provides a framework to influence the routing of packets based on service level information that is carried in the packets. It is based on a protocol header inserted between the Network and Transport layers, therefore it can be seen as a layer 3.5 solution. Technically, GVN is proposed as a new transport layer protocol in the TCP/IP protocol suite. An IP router that is not GVN capable will simply process the IP destination address as usual. Similar concepts have been proposed in other works, and referred to as Service Oriented Networking, Service Centric Networking, Application Delivery Networking, but they are now generalized in the proposed GVN framework. In this respect, the GVN header is a generic container that can be adapted to serve the needs of arbitrary service level routing solutions. The GVN header can be managed by GVN capable end-hosts and applications or can be pushed/popped at the edge of a GVN capable network (like a VLAN tag). In this position paper, we show that Generalized Virtual Networking is a powerful enabler for SCN (Service Centric Networking) and NFV (Network Function Virtualization) and how it couples with the SDN (Software Defined Networking) paradigm.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121239153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance evaluation of Neighbor Discovery++ protocol for the provisioning of self-configuration services in IPv6 mobile ad hoc networks","authors":"M. Grajzer, M. Głąbowski","doi":"10.1109/NETWKS.2014.6959266","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959266","url":null,"abstract":"The provision of new services based on the interconnection of smart devices into the IPv6-based Internet of Things (IoT) calls for novel technology solutions offering the possibility of automated, unsupervised network configuration and operation. This aspect is especially important for the mobile ad hoc networks (MANETs) as a key enabling technology for the IoT. The mechanisms of Stateless Address Autoconfiguration aim for providing basic self-configuration capabilities to the IPv6 networks, however they are still not sufficient to provide full support for MANET networks. To address this challenge we have proposed the Neighbor Discovery++ (ND++) - an extended IPv6 Neighbor Discovery protocol for efficient Duplicate Address Detection in MANETs. In this paper we present the simulation results verifying the ND++ behaviour in the NS-3 simulation environment. The initial results confirm the previous experimental evaluation, present the efficiency of the proposed solution and reveal guidelines for optimal ND++ set-up.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. S. Oliveira, C. Francês, J. W. A. Costa, D. Viana, M. Lima, A. Teixeira
{"title":"Analysis of the cost-effective digital radio over fiber system in the NG-PON2 context","authors":"R. S. Oliveira, C. Francês, J. W. A. Costa, D. Viana, M. Lima, A. Teixeira","doi":"10.1109/NETWKS.2014.6959262","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959262","url":null,"abstract":"The current trends on traffic and mobile users' growth is pushing the capacity of the current networks to the limit, which has led telecommunication operators to expand their investment in infrastructure. In this context, centralized RAN (C-RAN) comes with an innovative solution for the changes that will occur in the network. C-RAN shifts all the complex functionalities from the base stations (BS) to the central office (CO). A new segment called fronthaul connects the base band unit (BBU) with the remote antenna over a digital radio over fiber (DRoF) transmission based on the common public radio interface (CPRI). In this work we investigate, by means of simulation, the performance of DRoF in several contexts: single channel and in coexistence scenario. To meet this goal, we first investigate the key aspects of DRoF in an isolated transmission and next we proceed with a coexistence scenario based on the ITU-T G.989 standard (NG-PON2). The results show that the DRoF system is compatible with a NG-PON2 with respect to the wavelength plan and bandwidth requirements.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116184487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cluster optimization for building all-optical wide area networks","authors":"Raluca-Maria Indre, N. Perrot","doi":"10.1109/NETWKS.2014.6959215","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959215","url":null,"abstract":"An all-optical networking solution for building a wide area network has been recently proposed. The solution is based on the idea of grouping electronic edge nodes into source and destination clusters and interconnecting these clusters in the optical domain by associating one wavelength channel to each source-destination cluster pair. In this paper, we propose a procedure that allows to build node clusters taking into account the physical topology and specific traffic constraints. The objective is to minimize the number of clusters in the network and, with it, the number of required wavelength channels. We propose an algorithm derived from an exact combinatorial optimization method as well as a heuristic. We compare the proposed algorithms to the exact formulation of the optimization problem and show that our algorithms have excellent performance in terms of convergence time and quality of the solutions.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134299918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tabu search for bicriteria multipoint-to-multipoint virtual connections","authors":"R. Barbosa, Lúcia Martins","doi":"10.1109/NETWKS.2014.6959205","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959205","url":null,"abstract":"Multipoint-to-multipoint virtual connections in communication transport networks can be defined through a network management system where they can be computed as a tree which interconnects a given subset of network nodes. This problem can be modelled as a Steiner tree problem ii graphs with the aim of obtaining the lowest-cost tree for interconnecting the subset of network nodes involved in each multipoint-to-multipoint virtual connection, where the cost can represent, for instance, the occupancy of each link. In real networks however it may be advantageous not only to obtain the lowest-cost tree but also to obtain the tree with the minimum number of arcs, in order that multipoint-to-multipoint virtual connections might be implemented with the minimum of network resources. This problem can be considered as a bicriteria Steiner tree problem for which a tabu search resolution approach is herein proposed and evaluated. This new approach leads to better results than the obtained by other heuristics presented earlier to solve the same problem.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134460561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"QoS monitoring model of registration procedure for IMS platform","authors":"J. Balcerzak, G. Tyszka, S. Sénécal","doi":"10.1109/NETWKS.2014.6959235","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959235","url":null,"abstract":"A current trend for telecommunication operators is to move services from network level to application level and to realize these services on platforms. A typical example of such platform is the one dedicated to IP Multimedia Subsystem (IMS) services. In order to assess and to improve the Quality of Service (QoS) level, it is necessary to implement a strategy through relevant measurements sent by network elements and collected by monitoring tools in order to provide significant indicators. In this paper, we thus introduce a monitoring model in the context of registration procedure for IMS and illustrate the usage of this model in first diagnosis of problems with an IMS platform.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120891067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shohei Fujii, Y. Hirota, Takashi Watanabe, H. Tode
{"title":"Dynamic spectrum and core allocation with spectrum region reducing costs of building modules in AoD nodes","authors":"Shohei Fujii, Y. Hirota, Takashi Watanabe, H. Tode","doi":"10.1109/NETWKS.2014.6959250","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959250","url":null,"abstract":"In order to expand the transmission capacity of optical backbone networks, many innovative technologies such as Elastic Optical Network (EON) and Space Division Multiplexing (SDM) have intensively researched. These advanced network technologies require new optical node structures which can fully utilize the additional channels of the next-generation networks. Architecture on Demand (AoD) concept enables to construct flexible and scalable optical node structure by dynamically reconfiguring interconnections of building modules according to switching requests. Because resource allocation methods have impact on switching requests, the number and the types of building modules required for AoD nodes are dependent on not only traffic patterns but also spectrum allocations. In this paper, we propose spectrum and core allocation method based on spectrum region which is related with corresponding building modules of AoD nodes in Multi-Core Fiber Elastic Optical Networks (MCF-EONs). The proposed spectrum regions make two advantages. The one is reducing spectrum fragmentation which is an challenging issue in EONs. The other is replacing building modules of AoD nodes with simple and low-cost ones. Finally, we evaluate the proposed spectrum and core allocation method through computer simulations. The simulation results demonstrate that reducing spectrum fragmentation improves blocking probabilities and replacing building modules reduces modular costs of AoD nodes.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128799666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daishi Kondo, Y. Hirota, Akihiro Fujimoto, H. Tode, K. Murakami
{"title":"P2P live streaming system for multi-view video with fast switching","authors":"Daishi Kondo, Y. Hirota, Akihiro Fujimoto, H. Tode, K. Murakami","doi":"10.1109/NETWKS.2014.6959253","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959253","url":null,"abstract":"With diversification of content distribution systems, multi-view video distribution services, particularly in real-time services, will become popular in the future. To distribute many contents to many users, P2P live streaming systems are expected due to its high scalability. Because of this characteristic, P2P live streaming systems are also suitable for multi-view video distribution services. However, current P2P live streaming systems typically configure one P2P overlay network to distribute one video and they do not take multi-view service into account. Hence, it takes long delay during changing views because users search available P2P nodes and obtain data from them. Such long switching delay makes worse impact to multi-view video distribution services compared with current P2P live streaming systems. To realize attractive multi-view video distribution systems, this delay issue has to be solved. We have proposed a dedicated server, which is called “Zapping Server”, to help users switch view video for P2P live streaming system. In this paper, we propose a framework of fast view video switching service with Zapping Server for multi-view streaming services. In order to decrease switching time, Zapping Server helps newly joined users to connect to available nodes. Specifically, Zapping Server reserves peers. Furthermore, this paper proposes three pre-reservation methods, time-driven, event-driven, and hybrid ones, in addition to the designs of system architecture and fast view video switching procedure. The performance of the proposed system is evaluated through computer simulation. As a result, we confirmed that the proposed system could provide fast view video switching service with a probability of about 94%.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115962652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luiz Fernando Henning, Maria do Carmo R. Medeiros, P. Monteiro, Alexandre de A P Pohl
{"title":"Colourless ONU based on self seed signal RSOA in a WDM-PON","authors":"Luiz Fernando Henning, Maria do Carmo R. Medeiros, P. Monteiro, Alexandre de A P Pohl","doi":"10.1109/NETWKS.2014.6959216","DOIUrl":"https://doi.org/10.1109/NETWKS.2014.6959216","url":null,"abstract":"Currently there is an effort by system operators to deploy cost effective Passive Optical Networks (PON). In this way, next generation PON is the subject of studies by researchers and system designers. Among them, Wavelength Division Multiplexing on Passive Optical Network (WDM-PON) are of particular interest once they can provide larger bandwidths. This work presents a new kind of Optical Network Unit (ONU) that is colourless and employs a reflective semiconductor optical amplifier (RSOA) as optical source and uses a feedback process to use itself light and get the seed signal.","PeriodicalId":410892,"journal":{"name":"2014 16th International Telecommunications Network Strategy and Planning Symposium (Networks)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114707585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}