Abstract
A random access framework based on random interleaving multiplexing (RIM) is proposed to further improve throughput for internet of things in satellite networks, which resort to the state-of-art physical layer techniques that can resolve multiple packet collisions issue. The interleavers are randomly selected by active devices from a set of available interleavers, which are used to differentiate signals of different devices sharing a subframe that consists of multiple time slots. The message passing detector (MPD) is utilized to decode collided packets. By means of transmission diversity and interference cancellation, the proposed scheme can be linked with the irregular repetition slotted ALOHA (IRSA), the RIM-IRSA protocol is proposed. The analysis of packet loss ratio (PLR) of the RIM-IRSA is given by using the density evolution method, and the optimal degree distributions are given. Simulation results show that the RIM-IRSA outperforms traditional IRSA protocol.
Highlights
CONTRIBUTIONS OF THE WORK To further improve the throughput of random access (RA) scheme and without increasing its energy consumption, we propose a random interleaving multiplexing based RA framework and employ the advanced protocol for Internet of Things (IoT)-oriented satellite networks
1) We propose a novel random interleaving multiplexing (RIM) based RA framework to expand the idea in [16] for IoT-oriented satellite networks, which employs interleavers to differentiate data from different devices being multiplexed in a sub-frame consisting of multiple slots
We have proposed a RIM based random access framework for massive devices access into satelliteenabled IoT, and combine with the advanced irregular repetition slotted ALOHA (IRSA) protocol, dubbed RIM-IRSA
Summary
W ITH the development of the Internet of Things (IoT) in wireless communication technology and satellite communication networks, satellite-enabled IoTs gradually attract much more attentions since they have tremendous broad coverage and support various applications scenarios [1]-[2]. From the perspective of code-domain non-orthogonal multiple access (NOMA), we utilized the interleaver randomly selected to distinguish different users and proposed a random interleaving multiplexing based CRDSA protocol in [16]. B. CONTRIBUTIONS OF THE WORK To further improve the throughput of RA scheme and without increasing its energy consumption, we propose a random interleaving multiplexing based RA framework and employ the advanced protocol for IoT-oriented satellite networks. 1) We propose a novel RIM based RA framework to expand the idea in [16] for IoT-oriented satellite networks, which employs interleavers to differentiate data from different devices being multiplexed in a sub-frame consisting of multiple slots.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
