This article provides an overview of Performance Analysis of Round Trip Time (RTT) in Narrowband RF Networks for remote wireless communications using narrow band radios modem &Routers ((RipEX unit) ,as a means of transmission to communicate between the loins broadcast sites TV/FM. RTT delay measurement is influenced by different parameters of Narrowband RF Networks. We illustrate, in this paper, how RTT varies (in remote wireless practical communications application) versus distance, modulation, baud rates, number of hops and throughput, between source and destination. Also, we will see how the Forward Error Correction (FEC) affect, in the same time, the RTT according the factors cited above.
In this study, a narrowband (NB) internet of things (IoT) medical device (MD) wireless communication system was established, in which a multi-hop source to the MD network shared the downlink and uplink resources to probe and control the MDs of hospital patients. A multicast data packet was distributed over the multi-hop MD networks, and a random linear network coding approach was applied in the source instead of the intermediate nodes. We evaluated the MD probe cycle between a master station and remote terminal units, which were connected with several critical devices in a medical room. Furthermore, an accelerated end-to-end (E2E) probing protocol was established in the wireless mesh network to minimize the probing cycle of the health devices. In particular, a faster protocol was developed to address the probe and control subproblem. The proposed approach could assist in realizing the accelerated E2E probing for NB-IoT MDs, reducing the number of retransmissions, recovering lost packets, and providing a prompt overview of the medical network performance, based on several basic parameters. Furthermore, in a comparative study of the contemporary probing cycle techniques, the proposed protocol notably outperformed several widely used protocols, with the improvements typically exceeding 71% and 60%, respectively.
In this paper, we focus on efficient method for improving the reliability of data retransmission in real operational wireless communications. We analyze the effects of ACK (Acknowledge) and FEC (Forward Error Correction) on practical transmission performance of different message sizes. We propose a novel idea which allows quantifying and qualifying the reliability improvement in the network remote performance by exploiting Payload bitrate and forwarding time versus average message size with/without ACK/FEC respectively.
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