Protocol switching: exploiting meta-properties

2002 ◽  
Author(s):  
Xiaoming Liu ◽  
R. van Renesse ◽  
M. Bickford ◽  
C. Kreitz ◽  
R. Constable
Keyword(s):  
Protocol Switching

DESIGN OF SEAMLESS PROTOCOL SWITCHING LAYER FOR VOICE OVER INTERNET PROTOCOL (VOIP) THAT SWITCHES BETWEEN BLUETOOTH AND IEEE 802.11

2005 ◽  
Vol 15 (02) ◽  
pp. 271-278
Author(s):  
YUNG HAN TAN ◽  
ARUN KRISHNAN THAMPI ◽  
DALEY JOSEPH SEBASTIAN ◽  
YAJUN HA
Keyword(s):  
Operating System ◽  
Ieee 802.11 ◽  
Communication Protocols ◽  
Internet Protocol ◽  
Signal Strength ◽  
Battery Life ◽  
Voice Over Internet Protocol ◽  
Communication Devices ◽  
Protocol Switching ◽  
Switching Layer

The capability of seamlessly switching between two communication protocols will be very important for communication devices of the future, since it allows the end users to judiciously use whichever network is appropriate, depending on cost, signal strength or other factors such as the amount of battery life left on the device. This paper presents the groundbreaking idea of a Seamless Protocol Switching Layer (SPSL) on a hardware and software level to solve this problem. In addition, the SPSL concept is implemented by developing a prototype application, a Smart Video Phone, built using Intel XScale-based PXA255 board and ARM Linux as the operating system that can seamlessly switch between IEEE 802.11 and Bluetooth technologies. Experiments show that if the signal of the Bluetooth signal goes below 40%, the switching to Wireless-Fidelity (Wi-Fi) happens if it is available.

scholarly journals A Dynamically Reconfigurable Wireless Sensor Network Testbed for Multiple Routing Protocols

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Wenxian Jiang ◽  
Chenzhe Gu ◽  
Jingjing Wu
Keyword(s):  
Wireless Sensor Networks ◽  
Wireless Sensor Network ◽  
Routing Protocols ◽  
Data Transmission ◽  
Wireless Sensor ◽  
Dynamically Reconfigurable ◽  
Flow Table ◽  
And Performance ◽  
Protocol Switching ◽  
Future Work

Because wireless sensor networks (WSNs) are complex and difficult to deploy and manage, appropriate structures are required to make these networks more flexible. In this paper, a reconfigurable testbed is presented, which supports dynamic protocol switching by creating a novel architecture and experiments with several different protocols. The separation of the control and data planes in this testbed means that routing configuration and data transmission are independent. A programmable flow table provides the testbed with the ability to switch protocols dynamically. We experiment on various aspects of the testbed to analyze its functionality and performance. The results demonstrate that sensors in the testbed are easy to manage and can support multiple protocols. We then raise some important issues that should be investigated in future work concerning the testbed.

scholarly journals HD/FD and DF/AF with Fixed-Gain or Variable-Gain Protocol Switching Mechanism over Cooperative NOMA for Green-Wireless Networks

Sensors ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 1845 ◽  
Author(s):  
Thanh-Nam Tran ◽  
Miroslav Voznak
Keyword(s):  
Wireless Networks ◽  
Full Duplex ◽  
System Throughput ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
Variable Gain ◽  
Switching Mechanism ◽  
Half Duplex ◽  
Protocol Switching

This article studied the application of multiple protocol switching mechanism (PSM) over cooperating Non-Orthogonal Multiple Access (NOMA) networks to minimize the probability of outage and maximize the system throughput and energy efficiency (EE). This study investigated six scenarios: (1) a cooperative NOMA system with half-duplex (HD) and decode-and-forward (DF) protocols at the relay; (2) a cooperative NOMA system with full-duplex (FD) and DF protocols at the relay; (3) a cooperative NOMA system with HD and amplification amplify-and-forward (AF) with fixed-gain (FG) protocols at the relay; (4) a cooperative NOMA system with HD and amplification AF with variable-gain (VG) protocols at the relay; (5) a cooperative NOMA system with FD and amplification AF with FG protocols at the relay; (6) a cooperative NOMA system with FD and amplification AF with VG protocols at the relay. Based on the results of analysis and simulations, the study determined the transmission scenario for best system performance. This paper also proposed a mechanism to switch between HD/FD and DF/AF with FG/VG protocols in order to improve the quality of service (QoS) for users with a weak conditional channel. This mechanism can be deployed in future 5G wireless network sensors. Finally, EE was also assessed in relation to future green-wireless networks (G-WNs).

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