Freeze-TCP: a true end-to-end TCP enhancement mechanism for mobile environments

Goff, Tom; Moronski, J.; Phatak, Dhananjay S.; Gupta, Vipul

doi:10.1109/infcom.2000.832552

Cited by 358 publications

(213 citation statements)

References 5 publications

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“…Mobile WiMAX module [5] used in our simulation has the following features. It uses the time division duplex (TDD) mode and orthogonal frequency division multiplexing (OFDM).…”

Section: Litrature Analysismentioning

confidence: 99%

Enhanced TCP Friendly Congestion Control Protocol

Rana¹

2014

IJCTE

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Abstract-This paper mainly aims in the improvement of the congestion control mechanism over mobile WiMAX in an adhoc environment. Here we compare the throughputs of three different TCP congestion control algorithms namely Westwood+, Veno and New Reno. This paper focused on the performance variation of three TCP congestion control algorithms caused by both handovers and random packet losses over mobile WiMAX. We have enhanced the protocol with Active Queue Management (AQM) and Random Early Detection (RED) mechanism of routing. Our ns-2 simulation results show that Enhanced Westwood+ using the handoveraware algorithm has the improved performance up to 10.2% over normal TCP Westwood+.

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“…Mobile WiMAX module [5] used in our simulation has the following features. It uses the time division duplex (TDD) mode and orthogonal frequency division multiplexing (OFDM).…”

Section: Litrature Analysismentioning

confidence: 99%

Enhanced TCP Friendly Congestion Control Protocol

Rana¹

2014

IJCTE

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“…This violates the end-to-end semantics of TCP and is incompatible with IP security which encrypts TCP headers [11]. Another approach is to freeze TCP state whenever persistent errors occur [8], [12]. While error conditions persist, TCP does not invoke its congestion control mechanisms.…”

Section: Background and Related Workmentioning

confidence: 99%

“…While error conditions persist, TCP does not invoke its congestion control mechanisms. Wireless and congestion losses may be differentiated either via explicit loss notifications [8] or explicit congestion notifications [12]. Thus performance is not unnecessarily degraded, but recovery remains end-to-end and protocol software must be modified at various locations so as to generate these notifications.…”

Section: Background and Related Workmentioning

confidence: 99%

A multi‐service link layer architecture for the wireless Internet

Xylomenos

Polyzos

2004

Int J Communication

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Abstract-The performance of Internet applications over wireless links is disappointing due to the adverse effects of wireless errors on higher layer protocols and applications. This paper focuses on link layer enhancement mechanisms which attempt to hide these wireless impairments. We simulate file transfer and WWW browsing over TCP and continuous media distribution over UDP, in conjunction with various link layer schemes. Our results reveal that WWW browsing behaves differently than bulk file transfer, that some TCP aware enhancements have limited applicability and that UDP applications are best served by schemes inappropriate for TCP. We then describe a multi-service link layer architecture that simultaneously enhances the performance of diverse applications by supporting multiple error recovery schemes in parallel. In order to evaluate our architecture, we repeat our previous simulations with all applications executing simultaneously. The results reveal that with our approach each application achieves similar improvements as when it operates alone over its preferred link layer.

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“…Hsieh et al [12] show that FMIPv6 and FMIPv6 in the network layer alone can bring better TCP performance than standard MIPv6. In the transport layer based approach, Fast Retransmission (FR) [7] and Freeze TCP [9] attempt to improve TCP performance by distinguish packet losses due to the host mobility from those due to the network congestion. FR [7] handles this by fast retransmission of the earliest unacknowledged data segments, immediately after completing the handover, while Freeze TCP [9] freezes the connection state as soon as the Mobile Node (MN) detects an impending handover.…”

Section: Introductionmentioning

confidence: 99%

“…In the transport layer based approach, Fast Retransmission (FR) [7] and Freeze TCP [9] attempt to improve TCP performance by distinguish packet losses due to the host mobility from those due to the network congestion. FR [7] handles this by fast retransmission of the earliest unacknowledged data segments, immediately after completing the handover, while Freeze TCP [9] freezes the connection state as soon as the Mobile Node (MN) detects an impending handover. However, the trigger of reacting mechanisms to mobility in most of these approaches is rather dependent on the feedback from the transport layer itself, or the link signal strengths.…”

Section: Introductionmentioning

confidence: 99%

A Cross-Layer Approach for Improving TCP Performance in Mobile Environments

Hogrefe

2008

Wireless Pers Commun

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Network-layer mobility protocols have been developed to keep continuous connectivity for mobile hosts while transparent to the higher layers. However, Due to its distinct characteristics of different from traditional TCP/IP environment, mobility poses substantial impacts on TCP performance in mobile environments. This paper proposes a new cross-layer approach, by introducing a mobility detection element in the network layer which interacts with the transport layer to optimize TCP operations. As changes are only made to the endpoints, this approach preserves the end-to-end semantics of TCP. Different from most exiting works, which utilize either transport or network layer alone without much cross-layer cooperation, our approach allows the use of mobility information in TCP. We analytically compare this approach against existing approaches and show that our approach outperforms prior approaches in terms of effective data resumption time. Through performance simulations, our approach demonstrates that it can effectively improve TCP performance in Mobile IPv6-based mobile environments.

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Freeze-TCP: a true end-to-end TCP enhancement mechanism for mobile environments

Cited by 358 publications

References 5 publications

Enhanced TCP Friendly Congestion Control Protocol

Enhanced TCP Friendly Congestion Control Protocol

A multi‐service link layer architecture for the wireless Internet

A Cross-Layer Approach for Improving TCP Performance in Mobile Environments

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