LoRaWAN is one of the new and updated standards for IoT applications. However, the expected high density of peripheral devices for each gateway, and the absence of an operative synchronization mechanism between the gateway and peripherals, all of which challenges the networks scalability. In this paper, we propose to normalize the communication of LoRaWAN networks using a Reservation-ALOHA (R-A...

Time Synchronized Channel Hopping (TSCH) is an existing medium access control scheme which enables robust communication through channel hopping and high data rates through synchronization. It is based on a time-slotted architecture, and its correct functioning depends on a schedule which is typically computed by a central node. This paper presents, to our knowledge, the first scheduling algorit...

Time Synchronized Channel Hopping (TSCH) is an existing medium access control scheme which enables robust communication through channel hopping and high data rates through synchronization. It is based on a time-slotted architecture, and its correct functioning depends on a schedule which is typically computed by a central node. This paper presents, to our knowledge, the first scheduling algorit...

This paper proposes a medium-access control (MAC) protocol for integrated voice/data services in local wireless communications. The proposed protocol is a hybrid of R-Aloha and Aloha reservation adapted to local wireless environment. In the proposed hybrid Aloha-reservation/R-Aloha (HAR) protocol, data messages are transmitted using Aloha-reservation protocol, whereas voice packets are transmit...

This paper introduces a packet reservation based MAC layer for broadband fixed wireless access communications. The performance of a reservation based MAC scheme is compared with the performances of Pure-ALOHA and Slotted-ALOHA MAC schemes. A simulation using OPNET Modeler is performed to compare the performance of these MAC schemes in terms of channel throughput and average packet delay.

wireless sensor network consist large number of nodes which are communicated with each other over a specific area while running the changes successively in use by way of time. The nodes have processing elements, storage capacity, working process and talk to communication ability with additional nodes. The network nodes are directing in wireless medium under ISO/IEC standard, in which 18k is a s...

AbsfrucfA new multichannel MAC protocol called Hop-Reservation Multiple Access (HRMA) for wireless ad-hoc networks (multi-hop packet radio networks) is introduced, specified and analyzed. HRMA is based on simple half-duplex, very-slow frequency-hopping spread spectrum (FHSS) radios and takes advantage of the time synchronization necessary for frequency hopping. HRMA allows a pair of communicati...

A new multichannel MAC protocol called Hop-Reservation Multiple Access (HRMA) for wireless ad-hoc networks (multi-hop packet radio networks) is introduced, specified and analyzed. HRMA is based on simple half-duplex, very-slow frequency-hopping spread spectrum (FHSS) radios and takes advantage of the time synchronization necessary for frequency hopping. HRMA allows a pair of communicating nodes...

In this paper we present a new multiple access protocol based on DS-CDMA and slotted Aloha random access protocol with reservation for integrated voice and data transmission in packet personal communication networks (PCN). Speech activity detection is assumed for voice terminals who will relinquish their codes during their silence periods to be used by the data terminals. The code will be retur...

In this paper we present a new multiple access protocol based on DS-CDMA and slotted Aloha random access protocol with reservation for integrated voice and data transmission in packet personal communication networks (PCN). Speech activity detection is assumed for voice terminals who will relinquish their codes during their silence periods to be used by the data terminals. The code will be retur...