Bearing-Opportunistic Network Coding

Alič, Kemal; Pertovt, Erik; Švigelj, Aleš

doi:10.15837/ijccc.2015.2.457

Cited by 7 publications

(7 citation statements)

References 27 publications

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“…All nodes store all the received packets for possible packet decoding purposes. As a result, a typical NC mechanism is composed of two main operations [6,10]:…”

Section: Network Codingmentioning

confidence: 99%

“…If enough packets have been received (and stored in the packet pool), the client has enough information and it decodes the coded packet. Using previously stored packets and the XOR operation against coded packet, a native packet, previously not received is obtained [6].…”

Section: Client Sidementioning

confidence: 99%

“…Their main outcome is that in a network coding capable wireless network, the transmission of video streams should be optimized also, and even more important than for network throughput, for video quality. All approaches mentioned in [4][5][6] are designed for intersession network coding, by combining different flows. They compute a packet that must be decoded by the next hop of the head of the sender's output queue, based on a first in first out (FIFO) management for the requests of each client.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Network Coding-Assisted Retransmission Scheme for Video- Streaming Services over Wireless Access Networks

Švigelj¹,

Junuzović²

2018

Broadband Communications Networks - Recent Advances and Lessons From Practice

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Video-streaming services, such as Internet protocol television, promising the delivery of multimedia contents over wireless access networks to clients whenever and wherever, are becoming more and more popular. However, scarce radio resources, lossy characteristics of wireless links and high bandwidth demands pose the never-ending challenges for provisioning of real-time streaming services over wireless networks in a timely and reliable manner. Furthermore, a wireless channel may suffer from interference and multipath fading, which may cause random packet losses. In addition, wireless link layer does not provide a retransmission mechanism for multicast/broadcast traffic. This would significantly impact the clients' quality of experience of streaming services. Traditional unicast retransmission solutions improve client's quality, at the bandwidth expense, because every lost packet must be retransmitted separately. This chapter presents and practically evaluates a retransmission scheme for video-streaming services over last mile wireless networks. It is based on network coding techniques that increase the overall performance by means of reducing the number of physical transmissions, in comparison to traditional unicast retransmission approach, resulting in reduced bandwidth consumption. Thus, the Internet service providers can increase the number of clients over the same infrastructure or, alternatively, offer more services to the clients.

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“…All nodes store all the received packets for possible packet decoding purposes. As a result, a typical NC mechanism is composed of two main operations [6,10]:…”

Section: Network Codingmentioning

confidence: 99%

Section: Client Sidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Network Coding-Assisted Retransmission Scheme for Video- Streaming Services over Wireless Access Networks

Švigelj¹,

Junuzović²

2018

Broadband Communications Networks - Recent Advances and Lessons From Practice

Self Cite

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“…In this paper, we consider COPE as a reference underlying NC procedure also used by CANCAR. However, the latter could also be used with other NC algorithms such as BON (Bearing-Opportunistic Network) coding [6,7]. Similarly as in [8], we consider the same channel capacity for all nodes, thus we use ETX metric.…”

Section: Cope Network Coding Proceduresmentioning

confidence: 99%

CANCAR – Congestion-Avoidance Network Coding-Aware Routing for Wireless Mesh Networks

2018

KSII TIIS

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Network Coding (NC) is an approach recently investigated for increasing the network throughput and thus enhancing the performance of wireless mesh networks. The benefits of NC can further be improved when routing decisions are made with the awareness of coding capabilities and opportunities. Typically, the goal of such routing is to find and exploit routes with new coding opportunities and thus further increase the network throughput. As shown in this paper, in case of proactive routing the coding awareness along with the information of the measured traffic coding success can also be efficiently used to support the congestion avoidance and enable more encoded packets, thus indirectly further increasing the network throughput. To this end, a new proactive routing procedure called Congestion-Avoidance Network Coding-Aware Routing (CANCAR) is proposed. It detects the currently most highly-loaded node and prevents it from saturation by diverting some of the least coded traffic flows to alternative routes, thus achieving even higher coding gain by the remaining well-coded traffic flows on the node. The simulation results confirm that the proposed proactive routing procedure combined with the well-known COPE NC avoids network congestion and provides higher coding gains, thus achieving significantly higher throughput and enabling higher traffic loads both in a representative regular network topology as well as in two synthetically generated random network topologies.

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“…The well-known and widely adopted COPE [10] has been under the spotlight, while so-called support mechanisms such as scheduling [21], queue management [7,16,17] and routing support [11,14,20] were used to bring about additional gains. Most of these support mechanisms can also be used with other opportunistic network-coding approaches, such as [3,8,19].…”

Section: Introductionmentioning

confidence: 99%

Network and Traffic Design Aspects in Network-Coding-Enabled Wireless Networks

Alič

Mohorčič

Švigelj

2019

INT J COMPUT COMMUN

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Practical experience of using opportunistic network coding has already been gained in several real network deployments, indicating the influence of some of the fundamental characteristics of the network and the traffic load. However, these aspects have not been systematically investigated in the scope of the construction of efficient and robust large-scale network-coding-enabled wireless mesh networks. In this paper we focus on these aspects using an example of two opportunistic networkcoding procedures: the well-known COPE and the Bearing Opportunistic Network coding (BON). In addition, the design aspects for network-coding-enabled wireless mesh networks and applications are discussed. We have shown that opportunistic network coding can improve the performance of different networks and supported applications in terms of throughput, delay and jitter, although the benefits are not significant in all the cases. Thus, the use of opportunistic network coding should be considered upfront during the wireless network design phase in order to obtain the greatest benefits.

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Bearing-Opportunistic Network Coding

Cited by 7 publications

References 27 publications

Network Coding-Assisted Retransmission Scheme for Video- Streaming Services over Wireless Access Networks

Network Coding-Assisted Retransmission Scheme for Video- Streaming Services over Wireless Access Networks

CANCAR – Congestion-Avoidance Network Coding-Aware Routing for Wireless Mesh Networks

Network and Traffic Design Aspects in Network-Coding-Enabled Wireless Networks

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