Nasif Ekiz | University of Delaware (original) (raw)

Nasif Ekiz

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Papers by Nasif Ekiz

Research paper thumbnail of An Overview of Handoff Techniques In Cellular Networks

International Journal of …, 2005

Research paper thumbnail of A Scheduler for Multipath TCP

2013 22nd International Conference on Computer Communication and Networks (ICCCN), 2013

ABSTRACT We first explain problems with the default scheduler used by the Linux kernel MPTCP impl... more ABSTRACT We first explain problems with the default scheduler used by the Linux kernel MPTCP implementation. Then we propose the design of a new scheduler. Preliminary empirical results show that our proposed scheduler improves the throughput in MPTCP by alleviating the problems caused by the default scheduler.

Research paper thumbnail of Transport layer reneging

Computer Communications, 2014

ABSTRACT Reneging occurs when a transport layer data receiver first selectively acks data, and la... more ABSTRACT Reneging occurs when a transport layer data receiver first selectively acks data, and later discards that data from its receiver buffer prior to delivery to the receiving application or socket buffer. Reliable transport protocols such as TCP (Transmission Control Protocol) and SCTP (Stream Control Transmission Protocol) are designed to tolerate reneging. We argue that this design should be changed because: (1) reneging is a rare event in practice, and the memory saved when reneging does occur is insignificant, and (2) by not tolerating reneging, transport protocols have the potential for improved performance as has been shown in the case of SCTP. To support our argument, we analyzed TCP traces from three different domains (Internet backbone, wireless, enterprise). We detected reneging in only 0.05% of the analyzed TCP flows. In each reneging case, the operating system was fingerprinted thus allowing the reneging behavior of Linux, FreeBSD and Windows to be more precisely characterized. The average main memory returned each time to the reneging operating system was on the order of two TCP segments. Reneging saves so little memory that it is not worth the trouble. Since reneging happens rarely and when it does happen, reneging returns insignificant memory, we recommend designing reliable transport protocols to not permit reneging.

Research paper thumbnail of Misbehaviors in TCP SACK generation

ACM SIGCOMM Computer Communication Review, 2011

Research paper thumbnail of Load Sharing for the Stream Control Transmission Protocol (SCTP) draft-tuexen-tsvwg-sctp-multipath-04. txt

Research paper thumbnail of A Model for Detecting Transport Layer Data Reneging

Research paper thumbnail of Throughput Analysis of Non-Renegable Selective Acknowledgments (NR-SACKs) for SCTP

Research paper thumbnail of Concurrent Multipath Transfer Using SCTP Multihoming: Introducing the Potentially-Failed Destination State

NETWORKING 2008 Ad …, Jan 1, 2009

Research paper thumbnail of Web Client (Data Receiver) Receiver Buffer

Citeseer

... Download: http://www.cis.udel.edu/\~amer/CisResearchDayRenegi CACHED: Download as a PDF. by Pr... more ... Download: http://www.cis.udel.edu/~amer/CisResearchDayRenegi CACHED: Download as a PDF. by Prof Paul Amer , Nasif Ekiz , Jonathan Leighton , Ertugrul Yilmaz , Aasheesh Koli , Ersin Ozkan , Fred Baker (cisco , Definition Data Reneging. ...

Research paper thumbnail of Performance Analysis of SCTP Non-Renegable Selective Acknowledgments (NR-SACKs)

Research paper thumbnail of Non-Renegable Selective Acknowledgments (NR-SACKs) for SCTP

… , 2008. ICNP 2008, Jan 1, 2008

Research paper thumbnail of Web Over SCTP Multistreaming

cis.udel.edu

ABSTRACT This work explores the benefits from SCTP's multistreaming service for HTTP-bas... more ABSTRACT This work explores the benefits from SCTP's multistreaming service for HTTP-based applications. The current web transport – TCP, offers a sequential bytestream, and in-order data delivery within the bytestream. Transferring independent web objects over a single TCP ...

Research paper thumbnail of Concurrent Multipath Transfer During Path Failure

Computer Communications, Jan 1, 2009

Research paper thumbnail of Concurrent Multipath Transfer Using SCTP Multihoming: Transmission Policies Using Potentially-Failed Destination State

Research paper thumbnail of Misbehaviors In SACK Generation

Research paper thumbnail of Concurrent Multipath Transfer

Citeseer

... Concurrent Multipath Transfer. Download: http://www.cis.udel.edu/\~amer/PEL/ poc/pdf/Computer ... more ... Concurrent Multipath Transfer. Download: http://www.cis.udel.edu/~amer/PEL/ poc/pdf/Computer CACHED: Download as a PDF. by Preethi Natarajan A , NasifEkiz B , Paul D. Amer B , All Stewart C. Add To MetaCart. ...

Research paper thumbnail of An Overview of Handoff Techniques In Cellular Networks

International Journal of …, Jan 1, 2005

Research paper thumbnail of An Overview of Handoff Techniques In Cellular Networks

International Journal of …, 2005

Research paper thumbnail of A Scheduler for Multipath TCP

2013 22nd International Conference on Computer Communication and Networks (ICCCN), 2013

ABSTRACT We first explain problems with the default scheduler used by the Linux kernel MPTCP impl... more ABSTRACT We first explain problems with the default scheduler used by the Linux kernel MPTCP implementation. Then we propose the design of a new scheduler. Preliminary empirical results show that our proposed scheduler improves the throughput in MPTCP by alleviating the problems caused by the default scheduler.

Research paper thumbnail of Transport layer reneging

Computer Communications, 2014

ABSTRACT Reneging occurs when a transport layer data receiver first selectively acks data, and la... more ABSTRACT Reneging occurs when a transport layer data receiver first selectively acks data, and later discards that data from its receiver buffer prior to delivery to the receiving application or socket buffer. Reliable transport protocols such as TCP (Transmission Control Protocol) and SCTP (Stream Control Transmission Protocol) are designed to tolerate reneging. We argue that this design should be changed because: (1) reneging is a rare event in practice, and the memory saved when reneging does occur is insignificant, and (2) by not tolerating reneging, transport protocols have the potential for improved performance as has been shown in the case of SCTP. To support our argument, we analyzed TCP traces from three different domains (Internet backbone, wireless, enterprise). We detected reneging in only 0.05% of the analyzed TCP flows. In each reneging case, the operating system was fingerprinted thus allowing the reneging behavior of Linux, FreeBSD and Windows to be more precisely characterized. The average main memory returned each time to the reneging operating system was on the order of two TCP segments. Reneging saves so little memory that it is not worth the trouble. Since reneging happens rarely and when it does happen, reneging returns insignificant memory, we recommend designing reliable transport protocols to not permit reneging.

Research paper thumbnail of Misbehaviors in TCP SACK generation

ACM SIGCOMM Computer Communication Review, 2011

Research paper thumbnail of Load Sharing for the Stream Control Transmission Protocol (SCTP) draft-tuexen-tsvwg-sctp-multipath-04. txt

Research paper thumbnail of A Model for Detecting Transport Layer Data Reneging

Research paper thumbnail of Throughput Analysis of Non-Renegable Selective Acknowledgments (NR-SACKs) for SCTP

Research paper thumbnail of Concurrent Multipath Transfer Using SCTP Multihoming: Introducing the Potentially-Failed Destination State

NETWORKING 2008 Ad …, Jan 1, 2009

Research paper thumbnail of Web Client (Data Receiver) Receiver Buffer

Citeseer

... Download: http://www.cis.udel.edu/\~amer/CisResearchDayRenegi CACHED: Download as a PDF. by Pr... more ... Download: http://www.cis.udel.edu/~amer/CisResearchDayRenegi CACHED: Download as a PDF. by Prof Paul Amer , Nasif Ekiz , Jonathan Leighton , Ertugrul Yilmaz , Aasheesh Koli , Ersin Ozkan , Fred Baker (cisco , Definition Data Reneging. ...

Research paper thumbnail of Performance Analysis of SCTP Non-Renegable Selective Acknowledgments (NR-SACKs)

Research paper thumbnail of Non-Renegable Selective Acknowledgments (NR-SACKs) for SCTP

… , 2008. ICNP 2008, Jan 1, 2008

Research paper thumbnail of Web Over SCTP Multistreaming

cis.udel.edu

ABSTRACT This work explores the benefits from SCTP's multistreaming service for HTTP-bas... more ABSTRACT This work explores the benefits from SCTP's multistreaming service for HTTP-based applications. The current web transport – TCP, offers a sequential bytestream, and in-order data delivery within the bytestream. Transferring independent web objects over a single TCP ...

Research paper thumbnail of Concurrent Multipath Transfer During Path Failure

Computer Communications, Jan 1, 2009

Research paper thumbnail of Concurrent Multipath Transfer Using SCTP Multihoming: Transmission Policies Using Potentially-Failed Destination State

Research paper thumbnail of Misbehaviors In SACK Generation

Research paper thumbnail of Concurrent Multipath Transfer

Citeseer

... Concurrent Multipath Transfer. Download: http://www.cis.udel.edu/\~amer/PEL/ poc/pdf/Computer ... more ... Concurrent Multipath Transfer. Download: http://www.cis.udel.edu/~amer/PEL/ poc/pdf/Computer CACHED: Download as a PDF. by Preethi Natarajan A , NasifEkiz B , Paul D. Amer B , All Stewart C. Add To MetaCart. ...

Research paper thumbnail of An Overview of Handoff Techniques In Cellular Networks

International Journal of …, Jan 1, 2005

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