A MAC/PHY cross-layer design for efficient ARQ protocols

Kim, Dongmyoung; Choi, Youngkyu; Jin, Sunggeun; Han, Kwanghun; Choi, Sunghyun

doi:10.1109/lcomm.2008.081259

Cited by 13 publications

(8 citation statements)

References 2 publications

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“…Based on the recommendations made by IETF and 3GPP, most of the link layer techniques for wireless lossy links, involve making the link layer reliable using hybrid FEC/ARQ [17]. Formerly a good summary of hybrid FEC/ARQ techniques for the link layer is provided in [13].…”

Section: Tcp Unaware Approachesmentioning

confidence: 99%

Link Layer Correction Techniques and Impact on TCP’s Performance in IEEE 802.11 Wireless Networks

Dalal¹,

Sarkar²,

Dasgupta³

et al. 2014

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TCP performance degrades when end-to-end connections extend over wireless links which are characterized by high Bit Error Rate and intermittent connectivity. Such degradation is mainly accounted for TCP's unnecessary congestion control actions while attempting TCP loss recovery. Several independent link loss recovery approaches are proposed by researchers to reduce number of losses visible at TCP. In this paper we first presented a survey of loss mitigation techniques at wireless link layer. Secondly performance evaluation for TCP through Type 0 Automatic Retransmission Request mechanism in erroneous Wireless LAN is presented. In particular, simulations are performed taking into account the wireless errors introduced over IEEE 802.11 link using a well-established 2-State Markov model. TCP performance is evaluated under different settings for maximum link retransmissions allowed for each frame. Simulation results show that, link retransmission improves TCP performance by reducing losses perceived at TCP sender. However, such improvement is often associated with adverse effect on other TCP parameters that may cost a lot in return under extreme network conditions. In this paper an attempt is made to observe impact of link retransmissions on the performance of multiple TCP flows competing with each other. The analysis presented in this paper signifies the scope for maximizing TCP's throughput at the least possible cost.

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Section: Tcp Unaware Approachesmentioning

confidence: 99%

Link Layer Correction Techniques and Impact on TCP’s Performance in IEEE 802.11 Wireless Networks

Dalal¹,

Sarkar²,

Dasgupta³

et al. 2014

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“…The benefits of an interaction between ARQ and HARQ schemes have been studied in [10], [11]. However, they proposed partial interworking schemes only.…”

Section: Existing Schemes Related Arq and Harq Schemesmentioning

confidence: 99%

Priority and Network-aware Data Control Scheme toGuarantee the Media Quality in LTE Networks

Kim¹

2012

IJIEE

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“…We can decrease the RLC ARQ RTT by introducing a local NACK [11], [12], but the gain from decreasing the RLC ARQ RTT is not great. The local NACK has HARQ-assisted ARQ mechanisms.…”

Section: Issues and Considerationsmentioning

confidence: 99%

TCP performance issues in LTE networks

2011

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We describe issues on the TCP performance in LTE networks. TCP throughput is determined by various factors such as TCP window size, loss probability and RTT. We present measurement results of TCP throughput in a real LTE testbed with various factors and TCP auto-tuning enabled. As expected, the test results show that the AM bearer outperforms the UM bearer due to less loss probability in the former. However, test results show that delay spikes incurred by the RLC ARQ increase TCP RTT and degrade TCP performance. We propose some enhancements for improving TCP throughput in LTE networks.

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A MAC/PHY cross-layer design for efficient ARQ protocols

Cited by 13 publications

References 2 publications

Link Layer Correction Techniques and Impact on TCP’s Performance in IEEE 802.11 Wireless Networks

Link Layer Correction Techniques and Impact on TCP’s Performance in IEEE 802.11 Wireless Networks

Priority and Network-aware Data Control Scheme toGuarantee the Media Quality in LTE Networks

TCP performance issues in LTE networks

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