Scheduling over dissimilar paths using CMT-SCTP

Halepoto, Imtiaz Ali; Lau, Francis C. M.; Niu, Zhixiong

doi:10.1109/icufn.2015.7182601

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…Whereas, the destinations with shorter RTT value (fast paths) are configured to use the large portion of the buffer space both at the sender and receiver. The similar work to improve the performance by minimizing the buffer blocking is also presented in [15], where the technique of transmission scheduling are proposed. Scheduling of different data flows is based on a priority value, which is calculated by using the outstanding data of each flow.…”

Section: Related Workmentioning

confidence: 99%

Effect of TCP Buffer Size on the Internet Applications

Halepoto¹,

Phulpoto²,

Manzoor³

et al. 2018

ijacsa

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The development of applications, such as online video streaming, collaborative writing, VoIP, text and video messengers is increasing. The number of such TCP-based applications is increasing due to the increasing availability of the Internet. The TCP protocol, works at the 4th layer of the Internet model and provides many services such as congestion control, reliable communication, error detection and correction. Many new protocols have been proposed such as stream control transmission protocol (SCTP) with more features compared to the TCP. However, due to the wide deployment, TCP is still the most widely used. TCP creates the segments and transmit to the receiver. In order to prevent the errors TCP saves the segments into the sender buffer. Similarly, the data is also saved at the receiver buffer before its transmission to the application layer. The selection of TCP sender and receiver buffer may be varied. It is very important because many applications work on the smartphones that are equipped with a small amount of memory. In many applications such as online video streaming, some errors are possible and it is not necessary to retransmit the data. In such case, a small buffer is useful. However, on text transmission the complete reassembly of message is required by the TCP before transmission to the application layer. In such case, the large buffer size is useful that also minimizes the buffer blocking problem of TCP. This paper provides a detailed study on the impact of TCP buffer size on smart-phone applications. A simple scenario is proposed in NS2 simulator for the experimentation.

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Section: Related Workmentioning

confidence: 99%

Effect of TCP Buffer Size on the Internet Applications

Halepoto¹,

Phulpoto²,

Manzoor³

et al. 2018

ijacsa

Self Cite

View full text Add to dashboard Cite

show abstract

“…The concept of integrated policy is proposed in [3,10]. The work in [6,7,17] highlighted the role of the retransmission policy and suggested improvements in path selection while transmitting and retransmitting the data. Many authors evaluated SCTP and CMT-SCTP [8,9,12] and highlighted that a good policy also reduces the buffer-blocking problem.…”

Section: Related Workmentioning

confidence: 99%

Analysis of Retransmission Policies for Parallel Data Transmission

Halepoto

Sadhayo

Memon

et al. 2018

Eng. Technol. Appl. Sci. Res.

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Stream control transmission protocol (SCTP) is a transport layer protocol, which is efficient, reliable, and connection-oriented as compared to transmission control protocol (TCP) and user datagram protocol (UDP). Additionally, SCTP has more innovative features like multihoming, multistreaming and unordered delivery. With multihoming, SCTP establishes multiple paths between a sender and receiver. However, it only uses the primary path for data transmission and the secondary path (or paths) for fault tolerance. Concurrent multipath transfer extension of SCTP (CMT-SCTP) allows a sender to transmit data in parallel over multiple paths, which increases the overall transmission throughput. Parallel data transmission is beneficial for higher data rates. Parallel transmission or connection is also good in services such as video streaming where if one connection is occupied with errors the transmission continues on alternate links. With parallel transmission, the unordered data packets arrival is very common at receiver. The receiver has to wait until the missing data packets arrive, causing performance degradation while using CMT-SCTP. In order to reduce the transmission delay at the receiver, CMT-SCTP uses intelligent retransmission polices to immediately retransmit the missing packets. The retransmission policies used by CMT-SCTP are RTX-SSTHRESH, RTX-LOSSRATE and RTX-CWND. The main objective of this paper is the performance analysis of the retransmission policies. This paper evaluates RTX-SSTHRESH, RTX-LOSSRATE and RTX-CWND. Simulations are performed on the Network Simulator 2. In the simulations with various scenarios and parameters, it is observed that the RTX-LOSSRATE is a suitable policy.

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“…For that, the authors used the amount of outstanding data (CMT-RBS). Authors in [14,15,16] proposed a technique (CMT-OUT) to enhance the multipath transmission data rate. CMT-OUT uses a new packet scheduler where the key element is the outstanding data.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Multipath Transmission using the Stream Control Transmission Protocol

Halepoto¹,

Phulpoto²,

Jokhio³

et al. 2017

IJCNT

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Concurrent Multipath Transfer using the Stream Control Transmission Protocol (CMT-SCTP) enables multi-interface devices to send and receive data at the same time over more than one path. However, because of the fair Round robin scheduling, the paths with longer delay (low quality) causes the performance degradation due to gathered outstanding data at receiver. The outstanding data are the data packets sent by the sender for which it is waiting for an acknowledgment. In networks with dissimilar paths, the blockage in the buffer space at the receiver side is also one of the side effects of large outstanding data. This paper presents an evaluation study on the multipath transmission using the SCTP, particularly the techniques that deal with the outstanding data. A simulation scenario is proposed that contains multiple paths from the source to destination, where each path differs with the other path by the propagation delay. The results of evaluation show that the technique that uses the outstanding data in the packet scheduling decision (CMT-OUT) increase the data transmission over multiple paths when it is compared to the CMT-SCTP.

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Scheduling over dissimilar paths using CMT-SCTP

Cited by 8 publications

References 10 publications

Effect of TCP Buffer Size on the Internet Applications

Effect of TCP Buffer Size on the Internet Applications

Analysis of Retransmission Policies for Parallel Data Transmission

Evaluation of Multipath Transmission using the Stream Control Transmission Protocol

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