Effective Data Transmission and Control Based on Social Communication in Social Opportunistic Complex Networks

In opportunistic complex networks, information transmission between nodes is inevitable through broadcast. The purpose of broadcasting is to distribute data from source nodes to all nodes in the network. In opportunistic complex networks, it is mainly used for routing discovery and releasing important notifications. However, when a large number of nodes in the opportunistic complex networks are transmitting information at the same time, signal interference will inevitably occur. Therefore, we propose a low-latency broadcast algorithm for opportunistic complex networks based on successive interference cancellation techniques to improve propagation delay. With this kind of algorithm, when the social network is broadcasting, this algorithm analyzes whether the conditions for successive interference cancellation are satisfied between the broadcast links on the assigned transmission time slice. If the conditions are met, they are scheduled at the same time slice, and interference avoidance scheduling is performed when conditions are not met. Through comparison experiments with other classic algorithms of opportunistic complex networks, this method has outstanding performance in reducing energy consumption and improving information transmission efficiency.

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Full-Duplex Multi-Hop Wireless Networks Optimization with Successive Interference Cancellation

Sensors ◽

10.3390/s18124301 ◽

2018 ◽

Vol 18 (12) ◽

pp. 4301 ◽

Cited By ~ 1

Author(s):

Lei Shi ◽

Zhehao Li ◽

Xiang Bi ◽

Lulu Liao ◽

Juan Xu

Keyword(s):

Mathematical Model ◽

Wireless Networks ◽

Interference Cancellation ◽

Optimal Algorithm ◽

Successive Interference Cancellation ◽

Full Duplex ◽

Harsh Environment ◽

Interference Avoidance ◽

Simulation Results ◽

The Mathematical Model

In wireless network communication, in-band full-duplex technique is a useful and important technique that can enlarge the whole throughput of the wireless networks. However, its use needs harsh environment. The successive interference cancellation can make several transmitters’ data be received simultaneously by the receiver, and can make the in-band full-duplex technique be used easily in reality. In this paper, we try to propose an optimal algorithm for increasing the throughput of full-duplex multi-hop wireless networks with successive interference cancellation, which we call the full-duplex successive interference cancellation (FD-SIC) wireless networks. We first describe the mathematical model for the FD-SIC wireless networks and show it is NP-hard in general. Then, we propose a heuristic algorithm, namely the use-up-link-capacity iterative (UULC-iterative) algorithm, for each node’s routing and transmitting scheme. Simulation results show that the proposed algorithm for FD-SIC wireless networks can achieve better throughput compared with SIC-only networks and the interference avoidance networks.

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