routing over dialup networks

... consists of a number of heterogeneous wireless networks (e.g., cellular networks, MANETs, wireless local area networks, etc.) that are interconnected over an Internet backbone [22], as illustrated ... dominating-set routing scheme Computer simulation results demonstrate that the dominating-set routing scheme based on the node mean intermeeting time outperforms epidemic routing and dominating set routing ... unauthorized use of the networks [11] and achieving end-to-end message security [12] One main challenge is how to route messages successfully over a sparse MANET There exist various regular routing techniques...

Ngày tải lên: 21/06/2014, 11:20

... fixed routing over fixed circuits (PSTN), and next came dynamic routing over fixed circuits (IP -over- SONET) Subsequently there was a move towards dynamic routing over virtual circuits (i.e., IP over ... update model in WDM networks, load balancing in IP/MPLS networks, and contention in OBS networks 2.1 Lightpath Routing in WDM Networks Lightpath routing in WDM networks refers to the routing and wavelength ... addresses the routing issue in both the IP and WDM networks 1.4.1 Separate Routing for IP and WDM Networks In this approach, routing in IP -over- WDM network has been separated into routing at the...

Ngày tải lên: 04/10/2015, 17:06

... multipath routing, once path breakage is detected But, single path routing has to initialize costly path discovery procedure and wait until a new route is discovered Moreover, multipath routing ... Interdomain ROuting (MIRO) in [XR06] and Yet Another Multipath Routing Protocol (YAMR) in [GDGS10] Compared to wired networks, wireless networks are more suitable to adopt multipath routing First, ... to run over wireless networks With the development of wireless networks, tens of multipath routing protocols have been proposed that can be broadly classified as (a) reliable multipath routing...

Ngày tải lên: 26/11/2015, 22:29

... offering more services on existing networks • Increase revenues by extending valued TDM services to areas covered only by packet networks, without having to deploy overlay networks or rely on alternative ... Services and Revenues For metro service providers, the ability to offer premium TDM services over packet networks while also adding new revenues from Ethernet services enhances all facets of the ... TDM, SONET, Frame Relay and ATM) over IP and MPLS This Pseudo-Wire Emulation Edge-to-Edge (PWE3) working group is developing standards that enable services on packet networks to look, feel and perform...

Ngày tải lên: 18/10/2013, 19:15

... comprehensive solutions for network operators delivering voice, video and data services over wireless, wireline and cable networks Learn more at www.adc.com/professionalservices Web Site: www.adc.com From ... its Professional Services organization, ADC helps plan, deploy and maintain telecommunications networks throughout the United States and Europe ADC’s unique experience in multivendor, multitechnology, ... corporate asset and vigorously enforces its patents Products or features contained herein may be covered by one or more U.S or foreign patents An Equal Opportunity Employer 101603AE 10/05 Revision...

Ngày tải lên: 27/10/2013, 00:15

... discounting motivated by network externalities can overwhelm the aforementioned tendency toward lower prices in later rounds and result in an ascending price over time Finally, as we pointed out earlier, ... Group formation in large social networks: membership, growth, and evolution In KDD ’06: Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining, pages ... [12] [13] [14] [15] [16] [17] [18] [19] [20] discovery and data mining, pages 137–146, New York, NY, USA, 2003 ACM J Kleinberg Cascading behavior in networks: algorithmic and economic issues Cambridge...

Ngày tải lên: 06/03/2014, 21:20

... overflow of the buffer in nodes [2] In this paper, we use fuzzy logic techniques to develop a new queue management scheme in hop by hop wireless networks The application of fuzzy control in networks ... loss and low delay in TCP/IP networks Random Early Detection (RED), Explicit Congestion Notification (ECN), TCP Sliding Window, Slow Start are commonly used in wired networks In these schemes, ... fuzzy logic to invest congestion control of ATM networks have been published A survey is given in [5] 3.2 Fuzzy logic implementation A wireless networks is a large distributed complex system with...

Ngày tải lên: 28/03/2014, 13:20

... packets over correlated fading channel with different Vc Figure 15 NLF of audio signal versus SNR over correlated fading channel with different Vc Figure 16 Throughput of audio signal versus SNR over ... studies a vital issue in wireless communications, which is the transmission of audio signals over wireless networks It presents a novel interleaver scheme for protection against error bursts and reduction ... for audio transmission over uncorrelated and correlated fading channels is presented The simulation results show the superiority of the proposed chaotic interleaving scheme over the traditional...

Ngày tải lên: 20/06/2014, 20:20

... improve the performance of TCP over wireless networks To address this issue, we propose a unified solution called TCP NCE for improving the performance of TCP over wireless networks by reducing the ... successfully over wireless networks, the modification of TCP congestion control algorithms is necessary especially fast retransmission and recovery For the higher performance of TCP over Sreekumari ... on the number of contention of nodes Moreover, in wireless networks, the interferences between neighboring nodes are much higher compared to local area networks As a result, the bit error rates...

Ngày tải lên: 21/06/2014, 02:20

... significant PSNR gain over the traditional direct video transmission Especially by employing the cooperative video transmission with side information, we have obtained up to dB gain over the amplify-and-forward ... transmission, we study the video communications over the full-fledged cooperative network, and we focus on how to use relay nodes to improve the overall system performance, and especially on how ... resources for performance improvement Moreover, because of the broadcast nature of the phase in cooperative transmission, the source information is distributed over the relays without any cost We can...

Ngày tải lên: 21/06/2014, 20:20

... packets over correlated fading channel with different Vc Figure 15 NLF of audio signal versus SNR over correlated fading channel with different Vc Figure 16 Throughput of audio signal versus SNR over ... studies a vital issue in wireless communications, which is the transmission of audio signals over wireless networks It presents a novel interleaver scheme for protection against error bursts and reduction ... for audio transmission over uncorrelated and correlated fading channels is presented The simulation results show the superiority of the proposed chaotic interleaving scheme over the traditional...

Ngày tải lên: 21/06/2014, 20:20

... transmission over lossy networks, ” EURASIP Journal on Applied Signal Processing, vol 2006, Article ID 42083, 21 pages, 2006 [3] L Qiong and M van der Schaar, “Providing adaptive QoS to layered video over ... architecture useless For example, in case priority routing is not supported by a router on the transmission path, the whole scheme will fail Moreover, proxy-based solutions have scalability problems ... considered only the packet loss during the transmission over the wireless link without taking into account the congestion due to the background traffic over the same link and the video resolution in terms...

Ngày tải lên: 21/06/2014, 22:20

... proposed mobility architecture achieves lower handover delay and less packet loss than using either FMIPv6 or SIP and hence presents a powerful handover mobility scheme for next-generation IP-based ... conversational video applications in wireless convergent networks The raise of such new convergent services is due to the expansion of IP networks based on the availability of innovative advanced ... taken also into account O Crave et al address the problem of multimedia communications over best-effort networks with multiple description coding (MDC) in a distributed framework In this fifth...

Ngày tải lên: 21/06/2014, 22:20

... obtained from residual bit-error traces collected over operational networks We have collected a comprehensive set of bit-error traces over WSN and WiFi networks Steady-state and transition probabilities ... Figure 2: A 3-rd Order Markov Chain networks Simple Positive-ACK is a mandatory part of the MAC protocol in 802.11 networks, whereas it is optional in 802.15.4 networks 3.2.1 Probability of Frame ... ignore collision overhead in our analysis 3.2 Simple Positive-ACK Protocol Simple Positive-ACK is the de-facto standard for hop-by-hop reliable transmission over multihop ad hoc networks In this...

Ngày tải lên: 21/06/2014, 22:20

... frame: FDA = overlap(GT, AR) , (1/2) #GTo + #ARo (17) where again #GTo is the number of GT objects for a given frame (#ARo accordingly) The overlap ratio is given by #(ARo →GTo ) overlap(GT, AR) ... Journal on Image and Video Processing Overlap ratio thresholded (ORT) [32] TN This metric takes into account a required spatial overlap between the objects The overlap is defined by a minimal threshold: ... of overlapping frames Result tracks Step [o 11, o 12, , o 1Nr] [o 21, o 22, , o 2Nr] Frame no (time) { Overlap o i j ··· [o Ng1, , o NgNr] Ng ×Nr correspondence matrix with number of overlapping...

Ngày tải lên: 22/06/2014, 00:20

... not consider packet loss rates beyond 10% for wired networks, we consider higher loss rates considering “shadowing” and interference in wireless networks, which could be ad hoc [12] (where hosts ... starting from a given vertex In this section, we will extend our transmission strategy over unreliable networks to irregular meshes We will also analyze the performance of various 3D mesh interpolation ... 46–48], the base layer cannot be lost Retransmission adds an overhead on bandwidth limited connections, in particular on wireless and mobile networks Without the need to retransmit the base layer,...

Ngày tải lên: 22/06/2014, 00:20

... session over 3GPP networks (GPRS, EDGE, and UMTS) Packet errors are simulated using error masks generated from link-level simulations at various bearer rates and block error rate (BLER) values Moreover, ... × tti, and r is a fixed integer value which depends on RLC configuration Moreover, we estimate the average value of TT over the RTP packet transmission duration by the average value of TT(n−r) In ... study proposes a complete framework for scalable and media aware adaptive video streaming over wireless networks At the source coding, we developed an efficient coding method to detect ROIs and transmit...

Ngày tải lên: 22/06/2014, 01:20

... is known that flow control protects the recipient from being overwhelmed, while congestion control protects the network from being overwhelmed Flow control and network congestion affect each other ... stop-and-wait ARQ when the network is congested In wireless networks, the damage (packet error rate (PER)) is much larger than in wired networks Therefore, the decoding time is much larger Consequently, ... into a code word of length n > k This method presents very high code rates, k/n (the overall data rate is Roverall = (n/k)Rsource ), usually above 0.95 This leads to high information content in...

Ngày tải lên: 22/06/2014, 19:20

... example, over fiber networks, bit errors rarely occur The bit error rate of 800 600 400 200 0 Index of blocks MSRA wavelet Figure 5: Source data rate in SSB of subband P(Ht , Y ) of STEFAN fiber networks ... errors, parity packets are employed to recover from lost data packets But some of parity packets may be lost or corrupted when transmitting packets over the networks based on the UDP protocol For ... [29] and Biersack [30] pointed out, FEC protection scheme is effective to recover packet loss with minimum transmission overhead for multimedia streaming Hence, in this paper, a content-adaptive...

Ngày tải lên: 22/06/2014, 22:20

... high-priority layer varies with the overall rate That is why we need the complex adaptation described in Section On the other hand with SNR scalability, as Figure shows, over a wide range from 20 to ... assumed to be error-free The above FEC approach has certain limitations For example, its parity bit overhead is high such that with a limited channel rate, the source rate must be restricted to very ... layer will have less opportunity for protection, that is, RLP will be more often switched to 1/1 To overcome this problem, we employ HQAM to offer prioritisation as discussed below 2.2 UEP-DP with...

Ngày tải lên: 22/06/2014, 23:20