Contention-based medium access control (MAC) protocols for underwater acoustic sensor networks are designed to handle packet collisions that caused by long propagation delays. However, existing known suffer from relatively high collisions, which decrease system performance. To enhance performance, we propose a contention-based MAC protocol employs widely-popular machine learning technique, name...

A new wireless medium access control scheme is proposed for implementing collaborative codes on the carrier sense multiple access with collision avoidance (CSMA/CA) protocol. To simplify the analysis, a new backoff algorithm is suggested that is simple to implement and to model. Markov chain analysis is used for modelling the proposed CC-CSMA/CA protocol. The resulting model describes the regul...

With the booming development of marine exploration technology, new studies such as oceanix city, smart coastal and underwater cities have been proposed, Internet Underwater Things (IoUT) has received a lot attention. Data collection is an important application IoUT. The common method to collect data by traversing network using intelligent devices, Autonomous Vehicles (AUVs). However, traditiona...

This paper presents a fiber-optic ring network with support for heterogeneous real-time communication. The CCR-EDF (Control Channel Ring network with Earliest Deadline First scheduling) network is an optical fibre-ribbon pipelined ring network with a separate channel for network arbitration. The medium access protocol, that uses the control channel, provides low-level support for hard real time...

In autonomous distributed robot systems, many robots cooperate together to carry out many difficult tasks that single robot can not realize. But, in order to cooperate together the robots should communicate with each other. Therefore, the communication among robots is very important problem to be solved. In this paper, we propose and evaluate an Adaptive Reservation-Time Division Multiple Acces...

Conventional medium access control protocols are designed to avoid simultaneous transmissions, based on a simple collision model in the underlying physical layer. Recently, strong physical layer capabilities, enabled by multiuser detection techniques, have been studied in connection with simple medium access control protocols, for example, slotted ALOHA. We think that neither of these extreme a...

Packet-based optical access ring is becoming a promising solution in metropolitan networks. Its performance depends mainly on how optical resource sharing takes place among the different competing access nodes. In such a network fairness issues are likely to arise between upstream and downstream nodes competing to access a common data channel. We analyze the system performance in terms of acces...