Network Coding Multicast in Satellite Networks

Vieira, Fausto; Barros, João

doi:10.1109/ngi.2009.5175769

Cited by 24 publications

(9 citation statements)

References 10 publications

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“…Network coding support within on‐board processing (OBP) is a promising technique, as alternative to FEC mechanisms . A similar multicast scenario is described in Vieira and Jo, in cases of fixed and mobile terminals, where NC is proposed as part of the encapsulation protocol of the satellite stack, to provide transparency towards the upper layer protocols. The proposed communication architecture exploits a feedback channel to guarantee a reliable data transfer; anyway, the so‐called feedback implosion can be a major issue when feedback channels are used in multicast scenarios.…”

Section: Related Workmentioning

confidence: 99%

RLNC in satellite networks: A cooperative scenario for delivering M2M traffic

Bacco

Gotta

2017

Satell Commun Network

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The fraction of machine-to-machine traffic carried by satellite networks is increasing, and an efficient delivery is required in order to enable a large set of applications that can benefit from the advantages provided by the use of satellites. This work analyses the use of random linear network coding techniques in land mobile satellite channels to reliably deliver machine-to-machine traffic to mobile nodes in urban areas. The considered scenario takes into account a cooperative coverage extension in land mobile satellite vehicular networks, where the use of random linear network coding techniques can remove the need for any fixed equipment on the ground at least in urban environments, where the density of mobile nodes is typically high. KEYWORDSgossiping, M2M, network coding, RLNC, satellite, VANET INTRODUCTIONThe application of network coding (NC) to communications networks is relatively recent and dates back to year 2000. 1 Since then, NC has shown great potentials in correcting random packet errors, erasures, and errors introduced by malicious nodes, making it a powerful tool to achieve efficient network service delivery and network reliability. In the seminal work by Ahlswede et al, 2 NC is illustrated by the butterfly network example: A data source delivers a stream of messages to two receivers; all links can deliver up a single message per unit of time. In the example, the middle link represents a bottleneck, and to overcome that, the authors propose to send a combination of the messages instead of plain packets. Two incoming messages a i and b i are XORed, a i ⊕ b i , then the coded packet a i ⊕ b i is sent in the middle link, reaching the two receivers in a single unit of time. The two receivers can reconstruct the whole piece of information by XORing the network coded packet and a i (or b i ), which comes on a separate link. In this way, the throughput of the network is increased, because less packet transmissions are needed to deliver the whole information block. Linear NC (LNC) is introduced by Li et al 3,4 : the idea behind LNC is to create combinations of packets by taking coefficients from a Galois field of size q = 2 x .The original messages can be retrieved, at destination, by performing Gaussian elimination on the matrix generated from the LNC coefficients of the packets. Considering k source packets, a so-called generation worth of k input symbols, n ⩾ k output symbols are generated by the coding procedure.If at least k independent symbols received at destination, then decoding is possible. Random linear network coding (RLNC) has been proposed in Ho et al 5 and Chou et al 6 in 2003: when using RLNC, the coefficients are randomly drawn from the finite field. According to Ho et al, 5 the failure probability when relying on RLNC depends on the size q of the finite field. The larger q, the lower the failure probability, but at the price of a larger packet overhead and larger lookup tables* to be maintained in memory. 7 Anyway, it should be noted that a larger q provides a lower energy per bit cost...

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Section: Related Workmentioning

confidence: 99%

RLNC in satellite networks: A cooperative scenario for delivering M2M traffic

Bacco

Gotta

2017

Satell Commun Network

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“…Bits are grouped into blocks of log 2 (q) bits, each of which represents a symbol in GF(q). In [18,19], NC was applied in the space segment of the European Telecommunications Standard Institute (ETSI) standard DVB-SH and DVB-S2 in order to counteract channel impairments in mobile and fixed scenarios. h successive packets form a generation.…”

Section: Network Coding In Wireless Ad Hoc Networkmentioning

confidence: 99%

Cooperative coverage extension in land mobile satellite networks

Cocco

Alagha

Ibars

2015

Cooperative and Cognitive Satellite Systems

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“…[9] and further expanded in Ref. This also implies that routing also achieves a new dimension since network coding can provide native multipath support.…”

Section: Network Coding In Satellite Networkmentioning

confidence: 99%

“…On the one hand, nodes can overhear transmissions over wireless channels and then use these packets to either generate new coded packets or to use them in the decoding process. [9] that network coding could be very appropriate for exploiting the dynamic topologies present in these multi-satellite systems. Note that traditional routing techniques and higher layer protocols usually consider out-of-order packets as a sign of network congestion.…”

Section: Network Coding In Satellite Networkmentioning

confidence: 99%