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Introduction
Published in Zihuai Lin, Design of Network Coding Schemes in Wireless Networks, 2022
The network in Fig. 1.3(a) uses the classic store and forward technique. Only a single packet can be forwarded at a time by the central node N3. As a result, N3 must send two broadcasts to broadcast both x1 and x2 packets. As demonstrated in Fig. 1.3(b), network coding allows relay node N3 to mix x1 and x2 and then broadcast x1⊕x2 in a single transmission. Nodes N4 and N6 can decode the coded packet based on their own packet. The number of transmissions can therefore be reduced. As a result, network coding improves bandwidth efficiency. In ad hoc networks [66–71] and wireless mesh networks [72], network coding has been used to boost bandwidth efficiency by lowering the number of transmissions.
Sensor Networking Software and Architectures
Published in John R. Vacca, Handbook of Sensor Networking, 2015
Network coding (NC) is first proposed for wired networks [1]. By mixing packets at intermediate nodes during the transmission, the bandwidth can be saved, and therefore, the throughput of the whole network can be significantly improved. During the past years, network coding has been one of the most popular research topics in computer networks. Different coding schemes are designed, categorized into linear network coding and nonlinear network coding. Compared with linear network coding, nonlinear network coding has been reported to outperform linear coding in several studies [15,16,34,35]. And there are multisource network coding problems for which nonlinear coding has a general better performance on throughput [16]. Nevertheless, according to the an analysis [37], linear network coding can provide a performance close to the best possible throughput, while only requiring a relatively low complexity, compared with the high complexity of nonlinear coding.
The Contiki Operating System: A Tool for Design and Development of IoT—Case Study Analysis
Published in Ricardo Armentano, Robin Singh Bhadoria, Parag Chatterjee, Ganesh Chandra Deka, The Internet of Things, 2017
B. Venkatalakshmi, A. Pravin Renold, S. Vijayakumar
Network coding is a technique which can be used to improve a network’s throughput, efficiency, and scalability, as well as resilience to attacks and eavesdropping. Instead of simply relaying the packets of information, the nodes of a network can combine the packets together for transmission. This can be used to increase the maximum possible information flow in a network. Moreover, it may help for resilient transmission of packets. Network coding is a method of optimizing the flow of digital data in a network by transmitting digital evidence about messages. The case study considered a network scenario, as shown in Figure 18.4.
Heuristic-based opportunistic network coding at potential relays in multi-hop wireless networks
Published in International Journal of Computers and Applications, 2023
Network Coding (NC) is a transmission technique to store-code-forward data packets over the communication channel to improve network performance. Unlike the traditional assumption that information is separate; NC uses an integrated approach to transmit information. Adaptation of data encoding and decoding at intermediate stages can improve performance and make the network more robust. NC mechanism was introduced in a landmark paper by Ahlswede et al. [1] to address the classical problem of the bottleneck for achieving multicast capacity in wired networks. When it comes to wireless networks, by obtaining a transmission channel in the coding, packet scheduler can have more encoding opportunities before broadcasting. In NC, packets are amalgamated (linear/XOR) to accumulate messages at the source device and similarly at the destination device. Assuming the communication network as undirected graph G = (V, E), where V represents vertices and E edges of the graph are depicted in Figure 1.
Network coded multicast for multi-hop D2D communication systems
Published in International Journal of Electronics, 2020
Zhonghui Mei, Youxiong Lu, Shuanghong Huang
Classical routing paradigm always assumes that nodes can only replicate and forward packets. An alternative to routing is network coding (Rudolf, Ning, & Shuo, 2000)(Raymond, Shuo, & Ning, 2005). In contrast to store-and-forward routing, network coding allows all nodes to apply coding operations to its received packets before forwarding them, which can enhance the network throughput, reduce the transmission delay, power consumption，and so on (Auon & Mohanmmad, 2013; Chritna, 2011; Phlip & Yunnan, 2007; Yuanzhe & Chin, 2011), for multiple packets to be transmitted can share physical links through network coding.
A novel approach for anti-pollution attacks in network coding
Published in Connection Science, 2021
Zuoting Ning, Weiqi Shi, Lijun Xiao, Wei Liang, Tien-Hsiung Weng
Network coding has contributed to improving the performance of a network. In the network coding in which the intermediate node of the routing combines and encodes the packets received from the neighbouring nodes, and transmits the combinations, it is inevitable that a combination of forged or corrupted packets by the malicious node occurs.