Temat: multicast - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparison of Multicast Algorithm Evaluation Results in Low and High Multicast Saturation Environments
Autorzy:: Stachowiak, Krzysztof
Zwierzykowski, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/309461.pdf
Data publikacji:: 2019
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: quality of service
multicast
routing
multicast saturation
Opis:: The multicast quality of service-enabled routing is a computationally challenging task. Despite ongoing research eﬀorts, the associated mathematical problems are still considered to be NP-hard. In certain applications, computational complexity of ﬁnding the optimal connection between a set of network devices may be a particularly diﬃcult challenge. For example, connecting a small group of participants of a teleconference is not much more complex than setting up a set of mutual point-to-point connections. On the other hand, satisfying the demand for such services as IPTV, with their receivers constituting the majority of the network, requires applying appropriate optimization methods in order to ensure real system execution. In this paper, algorithms solving this class of problems are considered. The notion of multicast saturation is introduced to measure the amount of multicast participants relative to the entire network, and the eﬃciency of the analyzed algorithms is evaluated for diﬀerent saturation degrees.
Źródło:: Journal of Telecommunications and Information Technology; 2019, 3; 3-7
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A static test-bed for the evaluation and optimization of multihop wireless network protocols
Autorzy:: Bongartz, H. H.-J.
Bachran, T.
Powiązania:: https://bibliotekanauki.pl/articles/308216.pdf
Data publikacji:: 2008
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: MANET
mobile ad hoc network
multihop wireless network
multicast
wireless test-bed
simulation
explicit multicast
Opis:: We investigate the performance of multicast transmissions in a simple stationary wireless multihop ad hoc network test-bed. We compare several methods for MANET multicast using implementations for the protocols MOLSR, SMOLSR and SMF with an approach that uses explicit multicast and link-layer retries for reliable multicast. Results from the test-bed are compared with simulation results. We find that implementing a combination of explicit multicast with a retry mechanism gives the most promising results in test-bed and simulation compared with other approaches.
Źródło:: Journal of Telecommunications and Information Technology; 2008, 2; 62-69
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Innovative Method of the Evaluation of Multicriterial Multicast Routing Algorithms
Autorzy:: Stachowiak, K.
Zwierzykowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/307838.pdf
Data publikacji:: 2013
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: evaluation
graph algorithms
multicast
QoS
resource drainage
routing
Opis:: Theoretical considerations of the multicast Quality of Service (QoS) routing have been a rapidly developing and dynamic research area for years. Several algorithms derived from different approaches have been proposed, while the pool of valid solutions to the problem is steadily growing. When new solutions are compared with their predecessors, as much information as possible about their characteristics and differences is needed. Both the graph theory and the optimization theory provide robust and objective means of comparing not only algorithms, but also the results they produce. However, any possible extension to the comparison methods is vital and can bring interesting new information that would eventually lead to innovative conclusions. This article presents a method, derived from practice and experience, that simulates the drainage of resources accumulated by consecutive communication allocations. The nature of this comparison is an extension to the classical measurement of the success ratio and this creates a context of the continuous measure of a success rather than a simple binary value. In this article such a method with regard to algorithms optimizing multicast problems for more than two criteria is used for the first time and leads to an interesting conclusion about the influence of the number of the criteria on the result.
Źródło:: Journal of Telecommunications and Information Technology; 2013, 1; 49-55
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Packet switch architecture with multiple output queueing
Autorzy:: Danilewicz, G.
Głąbowski, M.
Kabaciński, W.
Kleban, J.
Powiązania:: https://bibliotekanauki.pl/articles/308342.pdf
Data publikacji:: 2004
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: high-speed packet switching
output queueing
buffer
switch fabric
switching node
multicast
Opis:: In this paper the new packet switch architecture with multiple output queuing (MOQ) is proposed. In this architecture the nonblocking switch fabric, which has the capacity of N _N2 N2, and output buffers arranged into N separate queues for each output, are applied. Each of N queues in one output port stores packets directed to this output only from one input. Both switch fabric and buffers can operate at the same speed as input and output ports. This solution does not need any speedup in the switch fabric as well as arbitration logic for taking decisions which packets from inputs will be transferred to outputs. Two possible switch fabric structures are considered: the centralized structure with the switch fabric located on one or several separate boards, and distributed structure with the switch fabric distributed over line cards. Buffer arrangements as separate queues with independent write pointers or as a memory bank with one pointer are also discussed. The mean cell delay and cell loss probability as performance measures for the proposed switch architecture are evaluated and compared with performance of OQ architecture and VOQ architecture. The hardware complexity of OQ, VOQ and presented MOQ are also compared. We conclude that hardware complexity of proposed switch is very similar to VOQ switch but its performance is comparable to OQ switch.
Źródło:: Journal of Telecommunications and Information Technology; 2004, 4; 76-83
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Utilization Balancing Algorithms for Dynamic Multicast Scheduling Problem in EON
Autorzy:: Markowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/963830.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: elastic optical networks
multicast
load balancing
flow assignment
dynamic scheduling
heuristic algorithms
Opis:: Dynamic data transfer demands are often being a challenge for present communication networks, as they appear in unpredictable time and must be satisfied prior to deadline. Important kind are the multi-target demands occurring in task of replication, backup, database synchronization or file transferring in pear-to-pear networks. Optimal scheduling usually depends of the nature of transport network. In the paper dynamic deadlinedriven multicast scheduling problem over elastic optical network is considered. Particularly, the method for improving link utilization by traffic balance for multicast demands is proposed. Few heuristic algorithms and results of experiments, proving the benefits of balancing concept are presented
Źródło:: International Journal of Electronics and Telecommunications; 2016, 62, 4; 363-370
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: CAPSL and MuCAPSL
Autorzy:: Millen, J.K.
Denker, G.
Powiązania:: https://bibliotekanauki.pl/articles/309409.pdf
Data publikacji:: 2002
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: protokół kryptograficzny
kryptografia
bezpieczeństwo
CAPSL
MuCAPSL
cryptographic protocol specification
cryptographic protocol analysis
secure group communication
multicast
Opis:: Secure communication generally begins with a connection establishment phase in which messages are exchanged by client and server protocol software to generate, share, and use secret data or keys. This message exchange is referred to as an authentication or key distribution cryptographic protocol. CAPSL is a formal language for specifying cryptographic protocols. It is also useful for addressing the correctness of the protocols on an abstract level, rather than the strength of the underlying cryptographic algorithms. We outline the design principles of CAPSL and its integrated specification and analysis environment. Protocols for secure group management are essential in applications that are concerned with confidential authenticated communication among coalition members, authenticated group decisions, or the secure administration of group membership and access control. We will also discuss our progress on designing a new extension of CAPSL for multicast protocols, called MuCAPSL.
Źródło:: Journal of Telecommunications and Information Technology; 2002, 4; 16-27
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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