Improving TCP performance in heterogeneous mobile environments by exploiting the explicit cooperation between server and mobile host

Wu, Xiuchao; Chan, Mun Choon; Ananda, A.L.

doi:10.1016/j.anpedi.2008.07.002

Cited by 2 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach helps to keep the signaling overhead low. While the authors of TCP-Handoff [18] use explicit communication between client and server to signal link characteristics, we simply re-use TCP ACKs to compute two round-trip time estimates instead of one.…”

Section: A Design Goalsmentioning

confidence: 99%

See 1 more Smart Citation

SpeedDetect: A Simple TCP Extension for Handling Sudden Capacity Increase

Biczók

Németh

Tarjan

et al. 2009

2009 Next Generation Internet Networks

View full text Add to dashboard Cite

Emerging broadband mobile cellular networks are inherently heterogeneous due to the co-existence of multiple wireless access technologies. In such a network sudden capacity changes are bound to happen due to inter-system handovers, user mobility and flow dynamics. Existing congestion control protocols are shown to deal sufficiently with capacity drops but tend to reach full link utilization slowly after abrupt capacity increases.In this paper we propose SpeedDetect, a simple, sender-side TCP extension for handling sudden capacity increase. The key idea behind our approach is to improve link utilization by explicitly detecting increased link capacity then triggering the underlying congestion control scheme to an aggressive probing regime. We evaluate the performance of SpeedDetect with testbed experiments and simulations. Our findings suggest that the proposed mechanism can significantly improve the reaction time of TCP by detecting sudden capacity increase quickly and consistently. Furthermore, our approach retains the RTT-fairness of the underlying TCP and exhibits favorable inter-protocol fairness towards standard TCP NewReno.Index Terms-Mobile cellular networks, handover, capacity increase, TCP.

show abstract

Section: A Design Goalsmentioning

confidence: 99%

“…TCP-Handoff is proposed in [18] to explicitly deal with handovers in mobile networks. A shortcoming of this solution is the use of dedicated handover signaling between TCP-HO client and server.…”

Section: Related Workmentioning

confidence: 99%

SpeedDetect: A Simple TCP Extension for Handling Sudden Capacity Increase

Biczók

Németh

Tarjan

et al. 2009

2009 Next Generation Internet Networks

View full text Add to dashboard Cite

show abstract

“…Modifications to the basic TCP algorithm have been proposed to improve various aspects of TCP performance, such as start-up behavior [20], retransmission fast recovery [13], packet loss recovery efficiency [15,25], or overall congestion control [2,5]. There are also research efforts to optimize the TCP algorithm for more recent network architecture such as mobile and wireless networks [11,47] and high-speed networks [17,23], as well as additional work that focuses not on modifying TCP flow and congestion control algorithm itself, but on using dynamic socket buffer tunning methods to improve performance [8,18]. Another category of related work focuses on routers, e.g., active buffer management [14,26] and router buffer sizing [43].…”

Section: Related Workmentioning

confidence: 99%

On TCP-based SIP server overload control

Shen

Schulzrinne

2010

Principles, Systems and Applications of IP Telecommunications

View full text Add to dashboard Cite

The Session Initiation Protocol (SIP) server overload management has attracted interest since SIP is being widely deployed in the Next Generation Networks (NGN) as a core signaling protocol. Yet all existing SIP overload control work is focused on SIP-over-UDP, despite the fact that TCP is increasingly seen as the more viable choice of SIP transport. This paper answers the following questions: is the existing TCP flow control capable of handling the SIP overload problem? If not, why and how can we make it work? We provide a comprehensive explanation of the default SIP-over-TCP overload behavior through server instrumentation. We also propose and implement novel but simple overload control algorithms without any kernel or protocol level modification. Experimental evaluation shows that with our mechanism the overload performance improves from its original zero throughput to nearly full capacity. Our work leads to the important general insight that the traditional notion of TCP flow control alone is incapable of managing overload for time-critical session-based applications, which would be applicable not only to SIP, but also to a wide range of other common applications such as database servers.

show abstract

Improving TCP performance in heterogeneous mobile environments by exploiting the explicit cooperation between server and mobile host

Cited by 2 publications

References 25 publications

SpeedDetect: A Simple TCP Extension for Handling Sudden Capacity Increase

SpeedDetect: A Simple TCP Extension for Handling Sudden Capacity Increase

On TCP-based SIP server overload control

Contact Info

Product

Resources

About