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Author: Karthik Srinivasan
Publisher:
ISBN: 9783659913785
Category :
Languages : en
Pages : 164
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Book Description
Author: Karthik Srinivasan
Publisher:
ISBN: 9783659913785
Category :
Languages : en
Pages : 164
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Book Description
Author: Victor C.M. Leung
Publisher: CRC Press
ISBN: 146656699X
Category : Computers
Languages : en
Pages : 241
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Book Description
Although multihomed communication is a rapidly emerging trend for next generation networks, no known book explores multihomed communication with the Stream Control Transmission Protocol (SCTP). Filling this void, Multihomed Communication with SCTP (Stream Control Transmission Protocol) explains this innovative feature that allows an endpoint to sim
Author: Victor C.M. Leung
Publisher: CRC Press
ISBN: 1466566981
Category : Computers
Languages : en
Pages : 244
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Book Description
Although multihomed communication is a rapidly emerging trend for next generation networks, no known book explores multihomed communication with the Stream Control Transmission Protocol (SCTP). Filling this void, Multihomed Communication with SCTP (Stream Control Transmission Protocol) explains this innovative feature that allows an endpoint to simultaneously maintain and use multiple points of connectivity to the network—making it possible for fixed and mobile users to connect to the Internet via multiple service providers or last hop technologies. Among the topics addressed, the book covers: Support of node mobility between networks Concurrent multipath transfer using SCTP multihoming Low delay communication and multimedia applications High performance computing using commodity hardware and software SCTP support in the INET framework and its analysis in the Wireshark packet analyzer SCTP application interface Ideal for researchers and programmers, this forward-looking reference describes SCTP multihoming concepts and implementation, applications of multihoming across different domains, and proposed extensions such as multipath transfer and mobility. Although the book is aimed at those with an advanced background, it also covers the fundamental concepts and mechanisms of SCTP multihoming to help anyone get up to speed on SCTP.
Author: Freire, Mario
Publisher: IGI Global
ISBN: 1591409942
Category : Computers
Languages : en
Pages : 750
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Book Description
Provides the most thorough examination of Internet technologies and applications for researchers in a variety of related fields. For the average Internet consumer, as well as for experts in the field of networking and Internet technologies.
Author: Ilknur Aydin
Publisher:
ISBN: 9781124240435
Category : Stream Control Transmission Protocol (Computer network protocol)
Languages : en
Pages :
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Book Description
A multihome-capable transport layer protocol allows an application to transmit data via multiple (disjoint) paths simultaneously, a scheme termed concurrent multipath transfer (CMT). SCTP is an IETF-standardized transport layer protocol with built-in multihoming capability. In prior work, a CMT protocol using SCTP multihoming (termed SCTP-based CMT) was proposed and investigated for improving application throughput in wired networks. In that effort, SCTP-based CMT was studied in (bottleneck-independent) wired networking scenarios with ns-2 simulations. This dissertation studies SCTP-based CMT in two specific contexts using QualNet simulations: (i) CMT over Multihop Wireless Networks (MWNs), and (ii) TCP-friendliness of CMT in the Internet. CMT over MWNs: Given the recent advances in multiple-radio nodes, multichannel radios, and multi-path routing, more multihomed nodes are deployed in the wireless networks. This trend motivated us to study two specific issues in the context of CMT over MWNs. The first issue concerns the performance of CMT over MWNs, where we studied how the contention-induced losses and the wireless channel characteristics impact the performance of CMT. We found that similar to the wired cases, CMT over MWNs showed better performance than one single-homed SCTP association and even the ideal AppStripe application, when the receiver buffer (rBuf) was unconstrained. For the cases of constrained rBuf, we showed that considering the bandwidth limitations of multihop wireless networks compared to their wired counterparts, rBuf sizes bigger than 128 KB can be sufficiently enough not to restrain the CMT performance. Overall, we concluded that applications will benefit from using CMT in the MWNs context when they have sufficiently large rBuf. The second issue concerns the acknowledgment (ACK) mechanism of CMT, where we investigated different design choices for the ACK mechanism of CMT in MWN to mitigate the effects of contention-induced losses in the multihop wireless channels among data and ACK traffic. According to the ACK policy of the original CMT, an ACK packet is sent to the path where the latest DATA packet arrives from. Therefore, a CMT receiver may send ACKs packets to any one of the (return) paths. In this dissertation, we surveyed historical developments of the TCP-friendliness concept and argued that the original TCP-friendliness doctrine should be extended to incorporate multihoming and SCTP-based CMT. Since CMT is based on (single-homed) SCTP, as a first step, we investigated TCP-friendliness of single-homed SCTP. We discovered that although SCTP's congestion control mechanisms were intended to be "similar" to TCP's, being a newer protocol, SCTP specification has some of the proposed TCP enhancements already incorporated which results in SCTP performing better than TCP. Therefore, SCTP can obtain larger share of the bandwidth when competing with a TCP flavor that does not have similar enhancements. We concluded that SCTP is TCP-friendly but achieves higher throughput than TCP, due to SCTP's better loss recovery mechanisms just as TCPSACK or TCP-Reno performs better than TCP-Tahoe. Then, we designed an experimental framework to investigate the TCP-friendliness of CMT according to the traditional doctrine of TCP-friendliness. Via QualNet simulations, we measured the sending rate of one two-homed CMT flow (containing two CMT subflows) and two SCTP flows and the impact of CMT and two SCTP flows on the other TCP flows in the network while sharing a tight link. We found out that one two-homed CMT association has similar or worse performance (for smaller number of competing TCP flows) than the aggregated performance of two independent, single-homed SCTP associations while sharing the link with other TCP connections, for the reason that a CMT flow creates a burstier data traffic than independent SCTP flows. When compared to the aggregated performance of two-independent TCP connections, one two-homed CMT obtains higher share of the tight link bandwidth because of better loss recovery mechanisms in CMT (as CMT inherits all the built-in TCP enhancements in SCTP). (Abstract shortened by UMI.).
Author: G. Ranganathan
Publisher: Springer Nature
ISBN: 9811501467
Category : Technology & Engineering
Languages : en
Pages : 1391
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Book Description
This book gathers selected papers presented at the Inventive Communication and Computational Technologies conference (ICICCT 2019), held on 29–30 April 2019 at Gnanamani College of Technology, Tamil Nadu, India. The respective contributions highlight recent research efforts and advances in a new paradigm called ISMAC (IoT in Social, Mobile, Analytics and Cloud contexts). Topics covered include the Internet of Things, Social Networks, Mobile Communications, Big Data Analytics, Bio-inspired Computing and Cloud Computing. The book is chiefly intended for academics and practitioners working to resolve practical issues in this area.
Author: Xi Zhang
Publisher: Springer
ISBN: 3642292224
Category : Computers
Languages : en
Pages : 650
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Book Description
This book constitutes the thoroughly refereed post-conference proceedings of the 7th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2010. The 37 revised full papers presented along with 7 papers from the allocated Dedicated Short Range Communications Workshop, DSRC 2010, were carefully selected from numerous submissions. Conference papers are organized into 9 technical sessions, covering the topics of cognitive radio networks, security, resource allocation, wireless protocols and algorithms, advanced networking systems, sensor networks, scheduling and optimization, routing protocols, multimedia and stream processing. Workshop papers are organized into two sessions: DSRC networks and DSRC security.
Author: Imtiaz Ali Halepoto
Publisher:
ISBN: 9781361032121
Category :
Languages : en
Pages :
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Book Description
This dissertation, "Scheduling and Flow Control in CMT-SCTP" by Imtiaz Ali, Halepoto, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Stream Control Transmission Protocol (SCTP) is a reliable transport layer protocol that supports multihoming. An extension of the SCTP that supports simultaneous data transfer over multiple paths is called Concurrent Multipath Transfer (CMT-SCTP), which can achieve an aggregated transmission throughput greater than that of a single path. The performance of CMT-SCTP in multipath networks with dissimilar path performance characteristics (PPCs) is challenging, especially when operating under the constraint of a small buffer. A problem arises when the fair round robin scheduling allows the paths of lower PPCs (slow paths) to affect the overall transmission efficiency due to the out-of-sequence outstanding data at the receiver. Data along the slow and fast paths occupy the shared receiver buffer while waiting for the out-of-sequence data, which causes performance degradation. Therefore, an intelligent scheduling of data transmissions as well as a proper flow control are necessary for efficient data transfer. I propose a flow control technique (CMT-RTTA), which logically divides a buffer by destination and in accordance with the corresponding RTT (round trip time). A destination with a shorter RTT will be allowed to occupy more buffer space than those with a longer RTT. With buffer splitting, destinations with shorter RTTs are allowed to receive their data first. I also propose an algorithm for scheduling data transmissions based mainly on the outstanding bytes (CMT-OUT). Firstly, CMT-OUT transmits data packets to the destinations that are ranked by a proposed Destination Selection Value (DSV) and only if the congestion and flow control allows the transmission. Secondly, the algorithm updates the path quality (PQU) after a successful transmission, which is a measure of how preferable the current destination should be selected in the next round. The third technique (OUT-BD), I propose is intended for heterogeneous networks having a higher dissimilarity among the paths. For that, I use CMTOUT for scheduling of data at the sender. For the flow control, the technique first selects a good path based on RTT and bandwidth. For the assumed good path, the sender is allowed to send data as long as the buffer space is available. For the other paths, if the transmission is allowed, the buffer size is intentionally delimited by the one-way bandwidth-delay-product (OWBDP). This technique is designed for those scenarios where higher OWBDP is because of the longer propagation delay. I established a real Internet testbed setup, which covers a two-path and a four-path network for testing all of the proposed techniques. The experiments show that CMT-RTTA and CMT-OUT improved the throughput of CMT-SCTP on average by 14% and 21% respectively when the maximum bandwidth dissimilarity is applied. Under the same scenario, the throughput improvement on average by OUT-BD is 59%. The mechanism in CMT-SCTP to handle the delay dissimilarity on a simple two-path scenario is very efficient; in the experiments on a slightly more complex four-path scenario, CMT-RTTA, CMT-OUT and OUT-BD improved the throughput by 26%, 54% and 41%, respectively. DOI: 10.5353/th_b5446482 Subjects: Stream Control Transmission Protocol (Computer network protocol)
Author: Toni Janevski
Publisher: Artech House
ISBN: 1608079228
Category : Technology & Engineering
Languages : en
Pages : 389
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Book Description
The convergence of legacy telecommunications towards the Internet and Internet technologies is an ongoing process, resulting in converged Telecom and Internet worlds. Based on current and developing industry practice, this book focuses on the Internet technologies, in particular, on Internet principles, protocols, and services for fixed and mobile networks, including technologies, regulation, and business aspects. This timely resource provides readers with all-around coverage of standardized Internet technologies, Internet standardization regarding the Telecom sector, as well as the convergence of all services onto the Internet. This includes legacy telecommunication services, legacy Internet services, and emerging over-the-top services such as Skype, which appeared during the past decade on a global scale, driven by the penetration of fixed broadband and mobile broadband.
Author: Liehuang Zhu
Publisher: Springer
ISBN: 981108890X
Category : Computers
Languages : en
Pages : 536
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Book Description
This book constitutes the refereed proceedings of the 13th International Conference on Mobile Ad-hoc and Sensor Networks, MSN 2017, held in Beijing, China, in December 2017. The 39 revised full papers presented were carefully reviewed and selected from 145 submissions. The papers address issues such as multi-hop wireless networks and wireless mesh networks; sensor and actuator networks; vehicle ad hoc networks; mobile social network; delay tolerant networks and opportunistic networking; cyber-physical systems; internet of things; system modeling and performance analysis; routing and network protocols; data transport and management in mobile networks; resource management and wireless QoS provisioning; security and privacy; cross layer design and optimization; novel applications and architectures.
