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...

ALOHA is a random multiple access technique useful for interactive computer working. It, however, suffers from the limitation that it requires a high power output from the earth station that is accessing the channel. Spread ALOHA, a variation of ALOHA proposed by Abramson eliminates this problem by using the technique of bit spreading. In this paper the results of a simulation study on the erro...

In this paper, we present a new MAC (Medium Access Control) protocol, called Hybrid ALOHA (H-ALOHA), which is combination of two existing protocols: Pure (P-ALOHA) protocol and Slotted (S-ALOHA) protocol. The idea behind it to design that could meet some specific requirements in wireless networks, such as reducing energy consumption, delay minimization, increasing the throughput. To best our kn...

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...

Past studies of Aloha have emphasized system-wide goals such as achieving maximum throughput or minimum delay. In this paper, we use game theory to analyze Aloha from the perspective of a selfish user. We construct an Aloha game and examine the optimal behavior of individual users. We show that the Aloha game has an equilibrium and that an Aloha system in which the users are selfish will be sta...

This paper presents a Collision Resolution Algorithm which significantly improves the performance in terms of throughput and delay of the uplink contention channel existing in Wireless ATM MAC protocols such as MASCARA [9], where slotted ALOHA is employed. FS-ALOHA groups the requests arrived at the mobile terminals during a frame length and serves these groups on a FIFO basis using slotted ALO...

Binary search tree and framed ALOHA algorithms are commonly adopted to solve the anti-collision problem in RFID systems. In this letter, the read efficiency of these two anti-collision algorithms is compared through computer simulations. Simulation results indicate the framed ALOHA algorithm requires less total read time than the binary search tree algorithm. The initial frame length strongly a...

Pulsed ALOHA is a form of impulse Ultra-Wideband communication where a bit is carried with each pulse, rather than using a time spreading code. Pulsed ALOHA and Wideband ALOHA are perfect fits to low energy wide-bandwidth communication. They permit energy-efficient higher data rates. Pulsed ALOHA has some unique advantages in collision avoidance and collision tolerance over Wideband ALOHA, when...