connection management in wavelength routed all optical networks

... routers), a point-to-point optical transport link is the basic building block of all type of optical networks. 11 Interconnections of several point-to-point optical links constitutes an optical network ... Routing and wavelength assignment with multi-granularity traffic in optical networks Pin-Han Ho and Hussein T Mouftah Chapter 12 Adaptive routing and wavelength assignment in all- optical networks: ... Routing and wavelength assignment in WDM networks Connection management in optical networks Survivability in optical networks Enabling technologies for optical networks © 2003 by CRC Press LLC...

Ngày tải lên: 24/08/2014, 17:52

... for Congestion Avoidance in Computer Network Computer Networks and ISDN Systems, 17:1-14, 1989 [19] Intelligen Streaming www.microsoft.com/windows/ windowsmedia/features/intellistream/default.asp, ... product networks Proceedings of ACM SIGCOMM’02, August 2002 [9] I Stoica, S Shenker, and H Zhang Core-stateless fair queueing: Achieving approximately fair bandwidth allocations in high speed networks ... Deering, D Estrin, S Floyd, V Jacobson, G Minshall, C Partridge, L Peterson, K Ramakrishnan, S Shenker, J Wroclawski, and L.Zhang Recommendations on queue management and congestion avoidance in...

Ngày tải lên: 24/12/2013, 07:16

... controller (SC) as shown in Figure SC is typically part of the overall Network Management System (NMS), maintaining the subscriber profiles holding information including the service profiles ... access switch residing in the basement of a building aggregating user traffic within the building In a typical ETTx deployment, a building often consists of business users (in the ground floor) ... addition to assisting in spoofing prevention, the SC can also be used to pinpoint the origin of spoofing attacks For example, when a malicious user tries to contaminate the ARP table in the default...

Ngày tải lên: 05/03/2014, 23:20

... divided into path protection and link protection In the former, a working path and a link-disjoint protection path are pre-computed for each connection In the later, each link of the working path ... Routing Dependable Connections in WDM Optical Networks, IEEE Transactions on networking (2001) 553 [4] S Yuan, J.P Jue, Dynamic Lightpath Protection in WDM Mesh Networks under Wavelength Continuity ... Survivable Routing in WDM Networks The failure in optical communication networks such as accidental fiber link disruption or switching device disorder will affect a huge amount of bandwidth in transmission,...

Ngày tải lên: 28/03/2014, 13:20

... Observations Traffic grooming in WDM networks 9.1 Traffic grooming in WDM rings 9.2 Static traffic grooming in rings 9.3 Dynamic traffic grooming in WDM networks Gains of traffic grooming 10.1 Network parameters ... of the wavelength continuity constraint 10 Optical networking technology 1.4 Wavelength conversion in WDM networks As noted above in optical networks, the wavelength continuity constraint restricts ... dramatically increasing bandwidth requirement In fact, most of the optical networks, if not all, consist of multiple fibers on each link The wavelength continuity constraint is relaxed in multi-fiber networks...

Ngày tải lên: 01/06/2014, 11:37

... SU-TX Receiving Acknowledgement tx (Pint rx (Pint if receive(ACK) and Rmin < R(i) then max−1 Single_SU = increase(Rmin) else current_spectrum = Single_SU = Rmin = R1 end if (i) E[Pint ⎧ 2 (i) ... sensing given the inherent inaccuracy of spectrum sensing Page of 15 Coordinated Sender-Receiver Sensing In ad hoc environments in which nodes are exposed to different parts of the network, the interference ... explicit coordination between different flows which is a main challenge in CRNs as it requires gathering and distributing spectrum information across the CRN and/ or synchronizing the activities...

Ngày tải lên: 20/06/2014, 21:20

... SU-TX Receiving Acknowledgement tx (Pint rx (Pint if receive(ACK) and Rmin < R(i) then max−1 Single_SU = increase(Rmin) else current_spectrum = Single_SU = Rmin = R1 end if (i) E[Pint ⎧ 2 (i) ... sensing given the inherent inaccuracy of spectrum sensing Page of 15 Coordinated Sender-Receiver Sensing In ad hoc environments in which nodes are exposed to different parts of the network, the interference ... explicit coordination between different flows which is a main challenge in CRNs as it requires gathering and distributing spectrum information across the CRN and/ or synchronizing the activities...

Ngày tải lên: 20/06/2014, 22:20

... generally the sink is responsible for initiating the key management process (ix) Each sensor node has a unique identifier Table shows the notations that are used to write algorithms in the remaining ... , in its neighboring hood to allow other nodes to join the tree and so on until all the nodes join the tree When receiving other Hello messages, each node uses them to set its list of sons in ... join the tree In Figure 3(b), we only show the step during which neighbors of nodes S5 join the tree Finally, the complete tree is depicted in Figure 3(c) 3.3 Tree Maintenance and Rekeying Once the...

Ngày tải lên: 21/06/2014, 11:20

... are described in Section In Section 3, we evaluate numerically the impact of incorporating admission control on the forced termination of SUs and also the impact of deploying channel allocation ... optimal call admission control in cellular networks, ” Wireless Networks, vol 3, no 1, pp 29–41, 1997 [11] A Ghasemi and E S Sousa, “Spectrum sensing in cognitive radio networks: requirements, challenges ... proposed CAP and repacking schemes with the interference in the conventional random channel allocation scheme Numerical results of this evaluation are also shown in Section Finally, the model of...

Ngày tải lên: 21/06/2014, 17:20

... constraints and according to changes in the environment In order to address these issues, we apply profile matching mechanisms as formally described in [15] Basically, profiles are used as fingerprints ... profile matching concept for wireless sensor networks are discussed in more detail We follow the diagram depicted in Figure and outline the single steps www.openrobertino.org http://www.tinyos.net ... describing single software modules 4.3 Profile matching The primary goal of profile matching is to create all possible combinations of executable source code Again, we use a straightforward terminology...

Ngày tải lên: 22/06/2014, 22:20

... constraints and according to changes in the environment In order to address these issues, we apply profile matching mechanisms as formally described in [15] Basically, profiles are used as fingerprints ... profile matching concept for wireless sensor networks are discussed in more detail We follow the diagram depicted in Figure and outline the single steps www.openrobertino.org http://www.tinyos.net ... describing single software modules 4.3 Profile matching The primary goal of profile matching is to create all possible combinations of executable source code Again, we use a straightforward terminology...

Ngày tải lên: 22/06/2014, 22:20

... Information Bit Rate Internet Control Message Protocol Institute of Electrical and Electronics Engineers Internet Engineering Task Force Increasing Failure Rate Inter-Modulation International Mobile ... Satcom Initiative Inter-Satellite Links Interactive Satellite Network International Standard Organization/Open System Interconnection Internet Service Provider Information Society Technologies International ... maximizing downlink C/N However, interference is not totally eliminated, since it is present in the form of inter-symbol interference that must be minimized by means of appropriate filtering TDMA is...

Ngày tải lên: 27/06/2014, 01:21

... technologies In its role as global spectrum coordinator, ITU-R develops and adopts the Radio Regulations, a voluminous set of rules that serve as a binding international treaty governing the use ... its Bureau, as a central registrar of international frequency use, recording and maintaining the Master International Frequency Register, which currently includes around 1,265,000 terrestrial ... communications is divided into ‘blocks’, the size of them varying according to individual services and their requirements These blocks are called ‘frequency bands’ and are allocated to services on...

Ngày tải lên: 05/07/2014, 19:20

... Resource Management in Satellite Networks Optimization and Cross-Layer Design This page intentionally left blank Resource Management in Satellite Networks Optimization and Cross-Layer ... (Springer Science+Business Media, LLC, 233 Spring Street, New York, NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis Use in connection with any form of information ... and all the SatNEx Colleagues who have provided a continuous support to this initiative Finally, a very special thank is for my Collaborator, Dr Ing Paolo Chini, for his significant support in...

Ngày tải lên: 05/07/2014, 19:20

... Engineering, Engineering School, Bellaterra 08193 - Barcelona, Spain angeles.vazquez@uab.es Fausto Vieira UAB - Universitat Aut´noma de o Barcelona, Dpt Telecommunications and Systems Engineering, ... Telecommunications and Systems Engineering, Engineering School, Bellaterra 08193 - Barcelona, Spain gonzalo.seco@uab.es xxii List of Contributors Petia Todorova FhI - Fraunhofer Institute for Open Communication ... issues 7.3.4 Joint timeslot optimization and fair dynamic bandwidth allocation in a system employing adaptive coding 7.3.5 Dynamic bandwidth allocation for...

Ngày tải lên: 05/07/2014, 19:20

... Information Bit Rate Internet Control Message Protocol Institute of Electrical and Electronics Engineers Internet Engineering Task Force Increasing Failure Rate Inter-Modulation International Mobile ... Satcom Initiative Inter-Satellite Links Interactive Satellite Network International Standard Organization/Open System Interconnection Internet Service Provider Information Society Technologies International ... Group Moving Picture Experts Group - Transport Stream Multiprotocol Label Switching Management- SAP Minimum Scheduling Latency Maximum Segment Size Multiple STP Multicast Terminals MBMS point-to-multipoint...

Ngày tải lên: 05/07/2014, 19:20

... maximizing downlink C/N However, interference is not totally eliminated, since it is present in the form of inter-symbol interference that must be minimized by means of appropriate filtering TDMA is ... called input backoff The corresponding output transmission power reduction in dB is called output backoff TDMA In TDMA, the total bandwidth is usually divided into time slots, organized according ... Circuit/Trunking, Video Conferencing Uplink: MF-TDMA Downlink: TDM/ OFDM Uplink: 13.775-13.975, 14-14.5 GHz Downlink: 10.95-11.2, 11.5-11.7, 12.2-12.75 GHz Inmarsat 11 GEO (10 active sats.): Inmarsat-2, Inmarsat-3,...

Ngày tải lên: 05/07/2014, 19:20

... air interface The RCST is responsible for analyzing, estimating and requesting the needed capacity for uplink transmissions (DAMA case), and for distributing the allocated capacity to the internal ... sent in SYNC bursts or normal MPEG2 data bursts using Data Unit Labeling Method (DULM), typically employed to send control and administrative information to the NCC Out-of-band signaling A minislot ... mode can be varied in different frames, but they are constant in a frame Finally, bit interleaving shall be applied to 8PSK, 16APSK and 32APSK FEC coded bits Modulation mapping Four constellations...

Ngày tải lên: 05/07/2014, 19:20

... e.g., interactive voice and video applications For each class: (i ) new calls arrive in the footprints according to independent Poisson processes; (ii ) call holding times are exponentially distributed ... signaling information; an interesting method has emerged from the following papers [40]-[43], where a ‘global coordinator’ of the different layers is considered allowing to acquire status information ... signaling among different layers during operation, but in the design phase cross-layer interactions are taken into consideration for a joint optimization Explicit cross-layer design: signaling interactions...

Ngày tải lên: 05/07/2014, 19:20

... circuit-switching, but allows changing the capacity of each connection dynamically without tearing down and setting up the connection The analysis of the proposed DBAC scheme shows a significant increase in ... channel-state information and the point-to-multipoint service set the difference between the packet scheduler in the satellite radio interface from its counterpart in point-to-point terrestrial mobile networks ... Fraunhofer Institute - FOKUS, Berlin, Germany 2.1 Introduction The efficient exploitation of common resources is an important aspect in networking, at all protocol layers In satellite networking, in particular,...

Ngày tải lên: 05/07/2014, 19:20