Relevant bibliographies by topics / Retransmission scheme

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Retransmission scheme'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 June 2024

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Journal articles on the topic "Retransmission scheme"

1

Lim, Chansook. "Improving Congestion Control of TCP for Constrained IoT Networks." Sensors 20, no. 17 (August 24, 2020): 4774. http://dx.doi.org/10.3390/s20174774.

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For smooth integration with middleboxes on the Internet, TCP (Transmission Control Protocol) is favorably considered as a transport-layer protocol for IoT (Internet of Things) networks. In constrained networks, TCP tends to perform well with a small window size. For example, the uIP (micro IP) TCP/IP stack sets the TCP window size to one segment by default. In such a case, managing the retransmission timer is a primary approach to congestion control. In this paper, we examine the congestion control mechanism of TCP in the uIP stack using grid topology networks. In the preliminary test using the Cooja network simulator, the results show that the original uIP TCP causes lots of retransmissions when a radio duty cycling mechanism such as ContikiMAC is used. One main reason is that, once retransmission is deemed to be necessary, the original uIP TCP sets the retransmission timer based on the fixed RTO (retransmission timeout) before performing a retransmission. Since ContikiMAC may cause large RTT (round-trip time) variations due to the hidden terminal problem, the retransmission timer based on the fixed RTO value may cause lots of retransmissions. To address the problem, we propose a new scheme for managing the retransmission timer which adopts the notion of weak RTT estimation of CoCoA, exponential backoffs with variable limits, and dithering. Simulation results show that our proposed scheme reduces retransmissions while enhancing throughput and fairness when an RDC (radio duty cycling) mechanism is used.
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Henna, Shagufta, and Muhammad Awais Sarwar. "An Adaptive Backoff Mechanism for IEEE 802.15.4 Beacon-Enabled Wireless Body Area Networks." Wireless Communications and Mobile Computing 2018 (June 26, 2018): 1–15. http://dx.doi.org/10.1155/2018/9782605.

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Carrier sense multiple access mechanism with collision avoidance (CSMA/CA) in IEEE 802.15.4-based wireless body area networks (WBANs) may impair the transmission reliability of emergency traffic under high traffic loads, which may result in loss of high valued medical information. Majority of the recent proposals recommend an early retransmission of failed frame while ignoring the history of past failed transmissions. More importantly, these proposals do not consider the number of failed transmissions experienced by each sensor node, thereby affecting the reliability of retransmissions. In this paper, we propose a dynamic retransmission adaptive intelligent MAC (RAI-MAC) scheme. In our proposed scheme retransmission class of each sensor node is decided by the coordinator according to the number of failed transmissions of each node as observed by the coordinator during the last superframe. Based on the retransmission class received from the coordinator, each node adjusts its next backoff value. The proposed scheme increases the probability of successful frame retransmissions without incurring extra overhead. The simulation results prove that the proposed scheme based on its adaptive retransmission mechanism achieves higher average throughput and average end-to-end delay, while not compromising on energy efficiency as compared to the IEEE 802.15.4 and Block Acknowledgment (Block Ack). Moreover, our scheme appears more stable in terms of average throughput, end-to-end delay, and energy efficiency under different values of beacon order (BO) and superframe order (SO).
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Vien, Quoc-Tuan, Le-Nam Tran, and Huan X. Nguyen. "Efficient ARQ Retransmission Schemes for Two-Way Relay Networks." Journal of Communications Software and Systems 7, no. 1 (March 22, 2011): 9. http://dx.doi.org/10.24138/jcomss.v7i1.182.

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In this paper1, we investigate different practical automatic repeat request (ARQ) retransmission protocols for twowaywireless relay networks based on network coding (NC). Theidea of NC is applied to increase the achievable throughput for the exchange of information between two terminals through one relay. Using NC, throughput efficiency is significantly improved due to the reduction of the number of retransmissions. Particularly, two improved NC-based ARQ schemes are designed based on go-back-N and selective-repeat (SR) protocols. The analysis of throughput efficiency is then carried out to find the best retransmission strategy for different scenarios. It is shown that the combination of improved NC-based SR ARQ scheme in the broadcast phase and the traditional SR ARQ scheme in themultiple access phase achieves the highest throughput efficiency compared to the other combinations of ARQ schemes. Finally, simulation results are provided to verify the theoretical analysis.
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McClellan, Stan, Wuxu Peng, and Ed Gonzalez. "Improving Throughput in SCTP via Dynamic Optimization of Retransmission Bounds." Network Protocols and Algorithms 7, no. 3 (November 30, 2015): 89. http://dx.doi.org/10.5296/npa.v7i3.8228.

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The Stream Control Transmission Proto-col (SCTP) is a relatively new transport protocol. Ithas several underlying mechanisms that are similar tothe Transmission Control Protocol (TCP), as well asseveral improvements that are important in certainclasses of applications. The timeout scheme of SCTP,however, is almost identical to that used in TCP.With the dynamics of today’s Internet, that timeoutscheme may be too passive. This paper presents an al-gorithm which dynamically adjusts the overall contextof the retransmission timeout process without chang-ing the fundamental retransmission mechanisms. Thisapproach manages the impact of fast retransmissionsand timeouts to significantly improve the throughputof SCTP applications. The algorithm has been im-plemented and tested in real network environments.Experimental results show that the algorithm avoidsspurious retransmissions and provides better through-put by intelligently managing RTO boundaries andallowing conventional timeout schemes to participatemore actively in the retransmission process.
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Liu, Hang, Jie Li, and Guang Chen. "High Loss Improved Broadcasting Retransmission Approach Based on Network Coding." Advanced Materials Research 1021 (August 2014): 261–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1021.261.

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When the packet loss rate is high in the wireless networks, the performance of network coding wireless broadcasting retransmission scheme becomes worse. Aiming at the problem of network coding wireless broadcasting retransmission scheme, high loss improved broadcasting retransmission approach based on network coding is proposed. Simulation results demonstrate that compared with the traditional wireless broadcasting retransmission scheme and the network coding wireless broadcasting retransmission scheme, high loss improved broadcasting retransmission approach based on network coding can ensure the ensure the reliability and effectiveness of the transmission in wireless broadcasting network.
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Ryu, Won-Jae, Jae-Woo Kim, Soo-Young Shin, and Dong-Seong Kim. "On the Performance Evaluations of Cooperative Retransmission Scheme for Cell-Edge Users of URLLC in Multi-Carrier Downlink NOMA Systems." Sensors 21, no. 21 (October 24, 2021): 7052. http://dx.doi.org/10.3390/s21217052.

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Non-orthogonal multiple access (NOMA) has a key feature that the cell-center user (CCU) has prior information about the messages of the cell-edge user (CEU) in the same user-pair. It means that CCU can be used for retransmission when the CEU requests retransmission. As ultra-reliability and low-latency communication (URLLC) requires high-reliability constraints (e.g., 99.999%), using CCU for retransmission can be useful to satisfy the reliability constraint. In this study, to ensure the reliability of CEU, cooperative retransmission (CR) scheme for downlink NOMA systems is proposed. And the CR scheme is evaluated with Block error rate (BLER) considering reliability and with packet loss rate (PLR) in terms of reliability and latency constraints. And the evaluation results showed that the proposed CR scheme can satisfy the target BLER for URLLC low SNR compared to the conventional retransmission scheme, and showed the improved PLR compared to the conventional retransmission scheme in low SNRs.
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Chen, Dai Mei, Xi Hui Fan, Yu Mei Wang, and Yue Du. "Cooperative Retransmission Based on Network Coding with Fourier Matrix for Wireless Ad Hoc Networks." Applied Mechanics and Materials 462-463 (November 2013): 701–5. http://dx.doi.org/10.4028/www.scientific.net/amm.462-463.701.

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In wireless Ad Hoc networks, the combination of cooperative communication and network coding is an effective technique to improve the efficiency of retransmission. In most literature, nodes cooperated not fully, only as a relay, and XOR or random network coding had some shortage, such as, it was NP-Hard to achieve optimal coding strategy, can't ensure all lost packets can be encoded and the coding matrix must be full rank. This paper proposes a retransmission scheme called CRNCF. In this scheme, nodes cooperated sufficient, and used Fourier matrix's element as coding coefficient which can guarantee the solvability of receiving node, and packet's head only contain the row number of matrix. Simulation results show that CRNCF can improve the performance of the retransmission in aspects of throughput, security, collision probability, and cost of packet‘s head than other schemes.
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Ramezanipour, Iran, Hirley Alves, Pedro H. J. Nardelli, and Ari Pouttu. "A Throughput and Energy Efficiency Scheme for Unlicensed Massive Machine Type Communications †." Sensors 20, no. 8 (April 21, 2020): 2357. http://dx.doi.org/10.3390/s20082357.

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In this paper, the throughput and energy efficiency of an unlicensed machine type communications network is studied. If an outage event happens in the network, there is a possibility for packet retransmission in order to obtain a lower error probability. The concept of spectrum sharing is used here for modeling the network, which allows the two types of licensed and unlicensed users to share the same uplink channel allocated to the licensed users. However, it is done in a way that no harm is done to the licensed nodes’ transmission for sharing the same channel with the unlicensed users, while licensed nodes’ transmission causes interference on the unlicensed network. Poisson point process is used here to model the location of the nodes and the effect of interference on the network. We study how different factors such as the number of retransmissions, SIR threshold and outage can affect the throughput and energy efficiency of the network. Throughput and energy efficiency are also both studied in constrained optimization problems where the constraints are the SIR threshold and the number of retransmission attempts. We also show why it is important to use limited transmissions and what are the benefits.
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Chen, Jing, Lixiang Liu, Xiaohui Hu, and Wei Tan. "Effective Retransmission in Network Coding for TCP." International Journal of Computers Communications & Control 6, no. 1 (March 1, 2011): 53. http://dx.doi.org/10.15837/ijccc.2011.1.2200.

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Incorporating network coding into TCP has the advantage of masking packet losses from the congestion control algorithm. It could make a lossy channel appear as a lossless channel for TCP, therefore the transport protocol can only focus on handling congestion. However, most schemes do not consider the decoding delay, thus are not suitable to be implemented in practical systems. We propose a novel feedback based network coding (FNC) retransmission scheme which has high throughput and quite low decoding delay without sacrificing throughput. It uses the implicit information of the seen scheme to acquire the exact number of packets the receiver needs for decoding all packets based on feedback. We also change the encoding rules of retransmission, so as to decode part of packets in advance. The scheme can work well on handling not only random losses but also bursty losses. Our scheme also keeps the end-to-end philosophy of TCP that the coding operations are only performed at the end hosts. Thus it is easier to be implemented in practical systems. Simulation results show that our scheme significantly outperforms the previous coding approach in reducing decoding delay, and obtains the throughput which is close to the scenarios where there is zero error loss. It is particularly useful for streaming applications.
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Lin, Shih-Yang, Miao-Hui Yang, and Shuo Jia. "An Adaptive Hybrid Automatic Repeat Request (A-HARQ) Scheme Based on Reinforcement Learning." Electronics 12, no. 19 (October 3, 2023): 4127. http://dx.doi.org/10.3390/electronics12194127.

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V2X communication is susceptible to attenuation and fading caused by external interference. This interference often leads to bit error and poor quality and stability of the wireless link, and it can easily disrupt packet transmission. In order to enhance communication reliability, the 3rd Generation Partnership Project (3GPP) introduced the Hybrid Automatic Repeat Request (HARQ) technology for both 4G and 5G systems. Nevertheless, it can be improved for poor communication conditions (e.g., heavy traffic flow, long-distance transmission), especially in advanced or cooperative driving scenarios. In this paper, we propose an Adaptive Hybrid Automatic Repeat Request (A-HARQ) scheme that can reduce the average block error rate, the average number of retransmissions, and the round-trip time (RTT). It adapts the Q-learning model to select the timing and frequency of retransmission to enhance the transmission reliability. We also design some transmission schemes—K-repetition, T-delay and [T, K]-overlap—which are used to shorten latency and avoid packet collision. Compared with the conventional 5G HARQ, our simulation results show that the proposed A-HARQ scheme decreases the system’s average BLER, the number of retransmissions, and the RTT to 5.55%, 1.55 ms, and 0.97 ms, respectively.
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Dissertations / Theses on the topic "Retransmission scheme"

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Khreis, Alaa. "Cross-layer optimization of cooperative and coordinative schemes for next generation cellular networks." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLT011/document.

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Les demandes de haut débit, faible latence et grande fiabilité augmentent dans les nouvelles générations de systèmes de radiocommunications. Par conséquent, on propose de combiner la transmission non orthogonale avec les retransmissions HARQ afin de combattre les fluctuations de canal de transmission à haut débit. Dans la première partie de la thèse, on propose des protocoles de retransmissions HARQ avec l'aide d'un relai afin d'améliorer le débit et la fiabilité du système. Une version renforcée du protocole HARQ qui prend en compte le délai de retour est proposée dans la seconde partie de la thèse
HARQ has become an important research field in the wireless digital communications area during the last years. In this thesis, we improve the HARQ mechanisms in terms of throughput and/or latency which are the bottleneck of next generation wireless communication systems. More precisely, we improve the time-slotted HARQ systems by mimicking NOMA, which means using superposed packets in a single-user context. In the first part of the thesis, we propose HARQ protocols using the help of a relay to improve the transmission rate and reliability. An enhanced HARQ protocol adapted to delayed feedback is proposed in the second part. In this new multi-layer HARQ protocol, additional redundant packets are sent preemptively before receiving the acknowledgement, and in superposition to other HARQ processes
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Khreis, Alaa. "Cross-layer optimization of cooperative and coordinative schemes for next generation cellular networks." Electronic Thesis or Diss., Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLT011.

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Les demandes de haut débit, faible latence et grande fiabilité augmentent dans les nouvelles générations de systèmes de radiocommunications. Par conséquent, on propose de combiner la transmission non orthogonale avec les retransmissions HARQ afin de combattre les fluctuations de canal de transmission à haut débit. Dans la première partie de la thèse, on propose des protocoles de retransmissions HARQ avec l'aide d'un relai afin d'améliorer le débit et la fiabilité du système. Une version renforcée du protocole HARQ qui prend en compte le délai de retour est proposée dans la seconde partie de la thèse
HARQ has become an important research field in the wireless digital communications area during the last years. In this thesis, we improve the HARQ mechanisms in terms of throughput and/or latency which are the bottleneck of next generation wireless communication systems. More precisely, we improve the time-slotted HARQ systems by mimicking NOMA, which means using superposed packets in a single-user context. In the first part of the thesis, we propose HARQ protocols using the help of a relay to improve the transmission rate and reliability. An enhanced HARQ protocol adapted to delayed feedback is proposed in the second part. In this new multi-layer HARQ protocol, additional redundant packets are sent preemptively before receiving the acknowledgement, and in superposition to other HARQ processes
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Eshler, Todd Jacob. "Adaptive Protocols to Improve TCP/IP Performance in an LMDS Network using a Broadband Channel Sounder." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/42190.

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Virginia Tech researchers have developed a broadband channel sounder that can measure channel quality while a wireless network is in operation. Channel measurements from the broadband sounder hold the promise of improving TCP/IP performance by trigging configuration changes in an adaptive data link layer protocol. We present an adaptive data link layer protocol that can use different levels of forward error correction (FEC) codes and link layer automatic retransmission request (ARQ) to improve network and transport layer performance.

Using a simulation model developed in OPNET, we determine the effects of different data link layer protocol configurations on TCP/IP throughput and end-to-end delay using a Rayleigh fading channel model. Switching to higher levels of FEC encoding improves TCP/IP throughput for high bit error rates, but increases end-to-end delay of TCP/IP segments. Overall TCP/IP connections with link layer ARQ showed approximately 150 Kbps greater throughput than without ARQ, but lead to the highest end-to-end delay for high bit error rate channels.

Based on the simulation results, we propose algorithms to maximize TCP/IP throughput and minimize end-to-end delay using the current bit error rate of the channel. We propose a metric, carrier-to-interference ratio (CIR) that is calculated from data retrieved from the broadband channel sounder. We propose algorithms using the carrier-to-interference ratio to control TCP/IP throughput and end-to-end delay.

The thesis also describes a monitor program to use in the broadband wireless system. The monitor program displays data collected from the broadband sounder and controls the settings for the data link layer protocol and broadband sounder while the network is in operation.
Master of Science

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Gidlund, Mikael. "On packet retransmission diversity schemes for wireless networks /." Stockholm, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-388.

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Jin, Xiangyang. "Multi-retransmission Route Discovery Schemes for Ad Hoc Wireless Network with a Realistic Physical Layer." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20254.

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During the route discovery process, each node receiving the route request packet (RReq) will retransmit it exactly once. A distant neighbor may accidentally receive/loose the only RReq and use it to announce a new route, although that link is inferior/superior for route reply packets (RRep) or actual message routing. Overall, the constructed route may be far from the optimal. All existing route discovery schemes (including DSR/AODV) apply retransmission during route discovery exactly once (1R). Based on a realistic physical layer model, we propose two new route discovery schemes: n-retransmission (nR, retransmitting exactly n times) and n-retransmission c-reception (ncRR), retransmitting until we either reach a total of n own retransmissions or c copies from neighbors are heard. We compare our two new scheme with the traditional one, under otherwise identical conditions (same metric, same packet reception probability on each link) and the same choices about possibly retransmitting again upon discovering a better route (R+) or discarding it (R1), generating route reply packet for every received RRep (B*), or for first and better discovered routes only (B2), and retransmitting RRep exactly once (A1), up to a maximum of three times (A3), or optimally u times decided by link quality (Au). Experimental results show that the proposed ncRR scheme (for n=2 and c=3 or c=4) achieves the best tradeoff between quality of route, success rate and message overhead in the route discovery process, followed by the nR scheme, and both of them are superior to the existing traditional schemes.
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Kunert, Kristina. "Architectures and Protocols for Performance Improvements of Real-Time Networks." Doctoral thesis, Högskolan i Halmstad, Inbyggda system (CERES), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-14082.

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When designing architectures and protocols for data traffic requiring real-time services, one of the major design goals is to guarantee that traffic deadlines can be met. However, many real-time applications also have additional requirements such as high throughput, high reliability, or energy efficiency. High-performance embedded systems communicating heterogeneous traffic with high bandwidth and strict timing requirements are in need of more efficient communication solutions, while wireless industrial applications, communicating control data, require support of reliability and guarantees of real-time predictability at the same time. To meet the requirements of high-performance embedded systems, this thesis work proposes two multi-wavelength high-speed passive optical networks. To enable reliable wireless industrial communications, a framework in­corporating carefully scheduled retransmissions is developed. All solutions are based on a single-hop star topology, predictable Medium Access Control algorithms and Earliest Deadline First scheduling, centrally controlled by a master node. Further, real-time schedulability analysis is used as admission control policy to provide delay guarantees for hard real-time traffic. For high-performance embedded systems an optical star network with an Arrayed Waveguide Grating placed in the centre is suggested. The design combines spatial wavelength re­use with fixed-tuned and tuneable transceivers in the end nodes, enabling simultaneous transmis­sion of both control and data traffic. This, in turn, permits efficient support of heterogeneous traf­fic with both hard and soft real-time constraints. By analyzing traffic dependencies in this mul­tichannel network, and adapting the real-time schedulability analysis to incorporate these traffic dependencies, a considerable increase of the possible guaranteed throughput for hard real-time traffic can be obtained. Most industrial applications require using existing standards such as IEEE 802.11 or IEEE 802.15.4 for interoperability and cost efficiency. However, these standards do not provide predict­able channel access, and thus real-time guarantees cannot be given. A framework is therefore de­veloped, combining transport layer retransmissions with real-time analysis admission control, which has been adapted to consider retransmissions. It can be placed on top of many underlying communication technologies, exemplified in our work by the two aforementioned wireless stan­dards. To enable a higher data rate than pure IEEE 802.15.4, but still maintaining its energy saving properties, two multichannel network architectures based on IEEE 802.15.4 and encompassing the framework are designed. The proposed architectures are evaluated in terms of reliability, utiliza­tion, delay, complexity, scalability and energy efficiency and it is concluded that performance is enhanced through redundancy in the time and frequency domains.
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Do, Minh-Tien. "Ultra-narrowband wireless sensor networks modeling and optimization." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0065/document.

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Cette thèse a pour but de modéliser les réseaux de capteurs sans fil à faible débit (WSN) basés sur la technique ultra bande étroite. Ce réseau a déjà été déployée par la société SIGFOX et a déjà démontré sa très grande efficacité pour les applications pour l’Internet des objets (IoTs) grâce à sa capacité de communication point à point efficace en terme de puissance consommée, et de sa connectivité de longue portée. Cette étude donne quelques aperçus sur le passage à l’échelle de la technique de l’UNB pour un réseau multipoint à point pour une liaison montante. L’accès au canal spécifique qui est basé sur l’accès multiple par répartition aléatoire de fréquence et de temps (R-FTDMA) est introduit et analysé. En outre, l’impact de l’interférence due à l’absence de stratégie d’ordonnancement à la couche MAC est étudié et modélisé. Notre modèle simplifié nous permet non seulement de décrire la puissance d’interférence agrégée, mais aussi d’évaluer les performances du système d’un tel réseau en matière de taux d’erreur et de probabilité de coupure. De même, la géométrie stochastique est utilisée pour modéliser la distribution spatiale des noeuds afin d’étendre le modèle simplifié dans le canal réaliste où les dégradations de canal sont prises en compte. De plus, le mécanisme de retransmission est considéré pour ce réseau. Cette étude permet de d’identifier le nombre optimal de retransmissions. Le réseau peut être configuré avec un paramètre global unique. Et enfin, cette thèse met en évidence le fait que le réseau de l’UNB Random-FTDMA est très pertinent dans un réseau réaliste, en particulier pour les applications à faible débit, car il allége le coût élevé du réseau, le coût de la synchronisation globale, mais sans perte de performance
This thesis aims at modeling the low-throughput wireless sensor networks (WSNs) based on ultra-narrow-band technology. Such wireless network is already been deployed by Sigfox company and has proved to be ultra-efficient for the Internet of things (IoTs) applications thanks to its ability of point-to-point communication in terms of power efficiency and long range connectivity. In particular, this thesis gives some insights on the scalability of UNB technology for a multi-point-to-point network in an uplink scenario. The multiple access schemes based on random time and frequency selection are introduced and analyzed. Furthermore, the interference impact due to the lack of scheduling strategy at the MAC layer is studied and modeled. Our simplified model using rectangular function allows us not only to describe the aggregate interference power but also evaluate the system performance of such network in terms of the bit-error-rate and outage probability. Besides, the geometry stochastic is used for spatial node distribution in order to extend the simplified model in the realistic channel communication where the channel impairments are taken into account. Besides, the retransmission mechanism is considered for such network. This study argues an optimal number of retransmission. The network can be configured with a unique global parameter. Last but not least, this thesis highlights the fact that the UNB network using Random-FTDMA schemes is very relevant in a realistic network, especially for low-throughput applications, because it bypasses the high network cost, the cost of global synchronization but without loss of performance
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"Proof of correctness of proposed ATM retransmission scheme." Massachusetts Institute of Technology, Laboratory for Information and Decision Systems], 1993. http://hdl.handle.net/1721.1/3325.

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Zhang, Kuang-Wei, and 張廣韋. "Study on Wireless Network Coding with Adaptive Retransmission Scheme." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/52596352378952886186.

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碩士
中原大學
電機工程研究所
98
Abstract Network coding is a technique which allows intermediate nodes to encode the receive messages before transmitting the information to other neighbors. Compared with traditional network transmission, it can improve the transmission throughput and reliability. Later T.Ho proposed Random Network coding and Sachin KattiKatabi proposed Opportunistic Network coding use different algorithms to achieve better performances. In 2009, Sameh Sorour and Shahrokh Valaee applied Network Coding on retransmission scheme, and proposed an adaptive scheme which combines Opportunistic Network Coding Retransmission Scheme (ONCR) and Random Network Coding Retransmission (RNCR) . The proposed can further improve the transmission throughput. We propose a simple ONCR algorithm to reduce the complexity and store the old received messages for current decoding to improve the system performances. The simulation shows the new method can achieve higher transmission throughput compared to the original one.
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Jian, Bobin, and 簡博彬. "An Optimized Retransmission Scheme with QoS Support for Wireless LAN." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/61297661895093762414.

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碩士
國立清華大學
資訊工程學系
90
The Medium Access Control (MAC) protocol of the IEEE 802.11 standard is based on Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). The basic retransmission mechanism, binary exponential backoff, may cause large packet delay and packet delay jitter that are not suitable for real-time traffic. In this thesis, we will first investigate some MAC enhancement mechanisms discussed in the IEEE 802.11 task group E, which was formed for enhancing the current 802.11 MAC protocol to support for applications with Quality of Service (QoS) requirements. Then, we will propose a jamming-based retransmission mechanism that is compatible with the 802.11 standard and could reduce the packet delay for real-time traffic. Besides, this mechanism performs stably when the traffic load is heavy. The optimal setting of our proposed mechanism is discussed analytically. We perform simulated experiments by comparing our proposed retransmission mechanism with the other two mechanisms discussed in the 802.11 task group E. We show that the jamming-based retransmission mechanism can reduce the packet delay and the packet dropping rate.
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Book chapters on the topic "Retransmission scheme"

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Venugopal, K. R., Shiv Prakash T., and M. Kumaraswamy. "ERRAP: Efficient Retransmission Qos-Aware MAC Scheme for WSNs." In QoS Routing Algorithms for Wireless Sensor Networks, 83–94. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2720-3_6.

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Kumaraswamy, M., K. Shaila, V. Tejaswi, K. R. Venugopal, S. S. Iyengar, and L. M. Patnaik. "Efficient Retransmission QoS-Aware MAC Scheme in Wireless Sensor Networks." In Lecture Notes in Electrical Engineering, 31–42. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03692-2_3.

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Böhm, Annette, Magnus Jonsson, Kristina Kunert, and Alexey Vinel. "Context-Aware Retransmission Scheme for Increased Reliability in Platooning Applications." In Lecture Notes in Computer Science, 30–42. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06644-8_4.

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Hagino, Hiroaki, Yuichiro Miyazaki, Yuko Onoe, Yukio Atsumi, Hirotaka Komaki, Masaaki Taniguchi, and Nagatsugu Yamanouchi. "A Playout Time Oriented Retransmission Scheme for Multimedia Streaming Systems." In Lecture Notes in Computer Science, 406–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45076-4_41.

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Inoue, Ichiro, and Naotaka Morita. "Partial-Frame Retransmission Scheme for Data Communication Error Recovery in B-ISDN." In IFIP Advances in Information and Communication Technology, 328–48. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-0-387-34885-8_20.

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Mafole, Prosper, Yuki Manabe, Teruaki Kitasuka, and Masayoshi Aritsugi. "Energy Efficient Backoff-Free Fragment Retransmission Fragmentation Scheme for IEEE 802.11 WLAN." In Lecture Notes in Electrical Engineering, 169–76. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8798-7_21.

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Oh, BongHwan, Jechan Han, and Jaiyong Lee. "Timer and Sequence Based Packet Loss Detection Scheme for Efficient Selective Retransmission in DCCP." In Communication and Networking, 112–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17587-9_13.

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Pradhan, Annapurna, and Susmita Das. "Reinforcement Learning-Based Resource Allocation for Adaptive Transmission and Retransmission Scheme for URLLC in 5G." In Algorithms for Intelligent Systems, 157–64. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5243-4_13.

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Kim, Bongtae, Arne A. Nilsson, and Harry G. Perros. "Throughput analysis of stop-and-wait retransmission schemes for k-reliable multicast." In Local and Metropolitan Communication Systems, 304–23. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-0-387-34884-1_17.

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Nandi, Arnab, and Sumit Kundu. "Energy Efficient Packet Data Service in Wireless Sensor Network in Presence of Rayleigh Fading." In Applications and Developments in Grid, Cloud, and High Performance Computing, 232–45. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2065-0.ch015.

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Abstract:
Energy level performances of three packet delivery schemes in Wireless Sensor Networks (WSN) are evaluated in presence of Rayleigh fading. Three different information delivery mechanisms are investigated using regenerative relays with or without error correction capability. Energy consumption for successful delivery of a data packet for each mechanism is evaluated and compared under several conditions of node density, bit rate, transmit power, and channel fading. Energy efficiencies of different retransmission schemes are also evaluated. Further, an optimal packet length based on energy efficiency is derived. Impact of optimal packet size on average number of retransmission and total energy expenditure is analyzed for each delivery scheme.
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Conference papers on the topic "Retransmission scheme"

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Ismael, Fath Elrahman, and Sarah Mustafa Eljack Babiker. "Enhanced Retransmission Scheme Multihop WiMAX Networks." In 2019 2nd International Conference on Computer Applications & Information Security (ICCAIS). IEEE, 2019. http://dx.doi.org/10.1109/cais.2019.8769485.

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Bouchireb, Khaled, Cedric Marin, Pierre Duhamel, and Michel Kieffer. "Improved retransmission scheme for video communication systems." In 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). IEEE, 2008. http://dx.doi.org/10.1109/pimrc.2008.4699952.

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Sarraf, M. "Preassigned retransmission slots multiple access scheme (PARS)." In IEEE INFCOM '91. The conference on Computer Communications. Tenth Annual Joint Comference of the IEEE Computer and Communications Societies Proceedings. IEEE, 1991. http://dx.doi.org/10.1109/infcom.1991.147656.

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Kim, Jihyung, and Jaesheung Shin. "A cooperative retransmission scheme in high dense networks." In 2015 International Conference on Information and Communication Technology Convergence (ICTC). IEEE, 2015. http://dx.doi.org/10.1109/ictc.2015.7354745.

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Nagasubramanian, Karthik, and Muni Sreenivas Pydi. "Random access retransmission scheme for power limited nodes." In 2017 Twenty-third National Conference on Communications (NCC). IEEE, 2017. http://dx.doi.org/10.1109/ncc.2017.8077105.

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Yin, Zhiyuan, Hussein Alnuweiri, and A. L. Narasimha Reddy. "Performance of early retransmission scheme in streaming media." In 2010 17th International Conference on Telecommunications. IEEE, 2010. http://dx.doi.org/10.1109/ictel.2010.5478842.

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Shirazi, Ghasem Naddafzadeh, Peng-Yong Kong, and Chen-Khong Tham. "A Cooperative Retransmission Scheme for IR-UWB networks." In 2008 IEEE International Conference on Ultra-Wideband (ICUWB). IEEE, 2008. http://dx.doi.org/10.1109/icuwb.2008.4653387.

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Sorour, Sameh, and Shahrokh Valaee. "Adaptive network coded retransmission scheme for wireless multicast." In 2009 IEEE International Symposium on Information Theory - ISIT. IEEE, 2009. http://dx.doi.org/10.1109/isit.2009.5205995.

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Riediger, M. L. B., and P. K. M. Ho. "A Probabilistic Subpacket Retransmission Scheme for ARQ Protocols." In 2008 IEEE International Conference on Communications. IEEE, 2008. http://dx.doi.org/10.1109/icc.2008.901.

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Cao, Yiqing, Yafeng Wang, Min Liang, Dacheng Yang, and Yafei Wang. "Performance of Retransmission Partner Selection Scheme for Cooperative HARQ." In 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM). IEEE, 2009. http://dx.doi.org/10.1109/wicom.2009.5305270.

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Reports on the topic "Retransmission scheme"

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Simmons, Jane M., and Robert G. Gallager. Proof of Correctness of Proposed ATM Retransmission Scheme. Fort Belvoir, VA: Defense Technical Information Center, August 1993. http://dx.doi.org/10.21236/ada459501.

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Simmons, Jane M. Performance Analysis of Poll-Based Retransmission Schemes. Fort Belvoir, VA: Defense Technical Information Center, August 1993. http://dx.doi.org/10.21236/ada459502.

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