Design of an integrated protocol architecture for Micro-VSAT networks

1995 ◽  
Author(s):  
A. Azcorra
Keyword(s):  
Protocol Architecture

scholarly journals An Implementation Design of Unified Protocol Architecture for Physical Layer of LoRaWAN End-Nodes

Electronics ◽  
2021 ◽  
Vol 10 (20) ◽  
pp. 2550
Author(s):  
Jean Park ◽  
Juyeop Kim
Keyword(s):  
Finite State Machine ◽  
Physical Layer ◽  
Wide Area Networks ◽  
Low Power Consumption ◽  
Unified Protocol ◽  
Long Run ◽  
Additional Burden ◽  
Finite State ◽  
The Status ◽  
Protocol Architecture

LoRa Wide Area Networks (LoRaWAN) can provide a connectivity service to Internet of Things (IoT) for an extremely long run-time and with low power consumption. As the LoRaWAN is extensively applied to various IoT scenarios, LoRaWAN solutions face a flexibility issue in terms of inter-operating with various kinds of LoRa modem hardware and protocol scenarios. In this regard, we design a unified protocol architecture for LoRaWAN physical layer, which can flexibly correspond to various deployment and operational cases. The new protocol architecture includes a hardware abstraction sub-layer, which contains generalized handlers for configuring various kinds of the LoRa modem, and a physical procedure sub-layer that structurally models the physical layer procedures of the LoRaWAN based on Finite State Machine(FSM). We illustrate the flexibility of the new protocol architecture by implementing an extensive feature that enhances the packet reception ratio based on the status of preamble detection. For evaluating the new protocol architecture, we implement the LoRaWAN physical layer protocol on real-time embedded systems and conduct experiments. The experimental results show that the proposed protocol robustly transmits and receives packets and generates little amount of additional burden compared with the conventional open source protocol provided by SemTech.

Grid Computing and its Application to Geoinformatics

2010 ◽  
pp. 213-221
Author(s):  
Aijun Chen ◽  
Liping Di ◽  
Yuqi Bai ◽  
Yaxing Wei
Keyword(s):  
Grid Computing ◽  
Earth Science ◽  
Grid Architecture ◽  
Research Areas ◽  
Computing Grid ◽  
Open Geospatial Consortium ◽  
Definition Of ◽  
Hourglass Model ◽  
Geospatial Services ◽  
Protocol Architecture

The definition of the Grid computing and its application to geoinformatics are introduced. Not only the comparison of power Grid and computing Grid is illustrated, also Web technology and Grid technology are compared. The Hourglass Model of Grid architecture is depicted. The layered Grid architecture, relating to Internet protocol architecture, consists of the fabric (computer, storage, switches, etc.) layer, connectivity layer, resource layer, collective layer, and application layer. Grid computing has been applied to many disciplines and research areas, such as physics, Earth science, astronomy, bioinformatics, etc. By applying the Grid computing to Open Geospatial Consortium, Inc.’s Web services and geospatial standards from International Organization for Standardization, US Federal Geographic Data Committee and US NASA, a geospatial Grid is proposed here, which consisting of Grid-managed geospatial data and Grid-enabled geospatial services.

ADAPT: A Semantics-Oriented Protocol Architecture

2008 ◽  
pp. 287-292
Author(s):  
Stefan Götz ◽  
Christian Beckel ◽  
Tobias Heer ◽  
Klaus Wehrle
Keyword(s):  
Protocol Architecture

Micro-ANP：A Novel Network Protocol Architecture for Underwater Sensor Network

2013 ◽  
Vol 303-306 ◽  
pp. 223-230 ◽  
Author(s):  
Xiu Juan Du ◽  
Ke Jun Huang ◽  
Fan Liu ◽  
Zhen Xing Feng ◽  
Sheng Lin Lan
Keyword(s):  
Sensor Network ◽  
Limited Resource ◽  
Network Protocol ◽  
Size Optimization ◽  
Matlab Simulation ◽  
Packet Size ◽  
Architecture Model ◽  
Network Transport ◽  
Underwater Sensor Network ◽  
Protocol Architecture

Underwater sensor network (UWSN) adopts acoustic communication and is characterized by high delay, low bandwidth, high error rate, low energy-consumption requirement and sparse topology, which lead to conventional network protocols for terrestrial WSN or other wireless multi-hop networks are unable to satisfy the performance of UWSN. On the other hand, the limited resources of energy, CPU and memory cause that the protocol stack running on the sensor node shouldn’t be much complicated. The paper proposes a novel, green network protocol architecture model tailored for UWSN, referred to as Micro-ANP, which is three layered structure including application, network transport, and physical layer. Furthermore, basing on Micro-ANP we realize the packet size optimization of UWSN through Matlab simulation. Micro-ANP protocol architecture and packet size optimization improve the energy efficiency of UWSN, prolong the network lifetime and achieve green network while meeting the requirement of QoS with the constraints of limited resource.

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