Implementation of RLC Layer in the Terminal Side of TD-LTE

2014 ◽  
Vol 889-890 ◽  
pp. 856-860
Author(s):  
Fa Tang Chen ◽  
Ming Zhu
Keyword(s):  
Operating System ◽  
Implementation Process ◽  
State Machine ◽  
Protocol Stack ◽  
Nucleus Plus ◽  
Processing Procedure ◽  
Processing Module ◽  
Machine Processing

This paper focuses on the overall implementation process of RLC Layer in the Terminal Side of TD-LTE, which is based on the Nucleus Plus operating system. It contains primitive processing procedure and the realization of RLC layer entry function, which contains multi-instance module and state machine processing module. This helps to learn RLC layer and grasp the overall protocol stack.

Research on Wireless Sensor Networks Based on Open Source System

2014 ◽  
Vol 621 ◽  
pp. 712-718
Author(s):  
Guang You Yang ◽  
Si Jian Zhu ◽  
Rui Quan ◽  
Zhi Yan Ma
Keyword(s):  
Operating System ◽  
Wireless Sensor Networks ◽  
Wireless Networks ◽  
Sensor Networks ◽  
Open Source ◽  
Wireless Sensor ◽  
Protocol Stack ◽  
Network Nodes ◽  
Main Work ◽  
Radio Transceiver

As the key technologies such as wireless communication, sensor continues to mature, wireless sensor networks has become a domestic and foreign focus of research in the field of wireless networks. The main work of the thesis is to implement ZigBee wireless sensor networking, using open source protocol FreakZ On the base of existing hardware. WSN hardware node consists of 32-bit microprocessor STM32F102CB based on ARM Cortex-M3 kernel and AT86RF212 radio transceiver; the software platform uses a lightweight multi-tasking operating system Contiki and open source protocol stack called FreakZ following ZigBee protocol specification, for networking wireless networks nodes. The paper presents the system architecture of WSN networking and its hardware components, software architecture and data transmission and reception processes of the networks. Using FreakZ protocol stack under the Contiki operating system on the base of the existing hardware platform, the network nodes information and topology displayed on the HyperTerminal indicates the success of WSN networking by using FreakZ protocol.

Applied-Information Technology with Design and Development of Bluetooth PSTN Gateway and Audio Terminal

2014 ◽  
Vol 978 ◽  
pp. 261-264
Author(s):  
Ya Jun Dong
Keyword(s):  
Operating System ◽  
Information Technology ◽  
Embedded Software ◽  
Protocol Stack ◽  
Design And Development ◽  
Application Prospects

Based on the Bluetooth specification and profiles, this paper discussed the concept of 3-in-1 phone and the design and realization of two versions of Bluetooth PSTN gateway and audio terminal developed by the authors. First, this paper illustrates the characteristics and innovation of PC version of Bluetooth protocol stack developed by us, which includes the design and realization of Virtual Operating System (VOS) and such methods as bytes sequence and bytes alignment shield, and discusses the development of equipments. Then, the design and realization of embedded PSTN gateway and audio terminal are discussed, the realization of embedded software and PSTN gateway that supports multi-terminals are emphasized. Finally, the application prospects of PSTN gateway and audio terminal are introduced.

Research and Implementation of LXI Auto Discovery Mechanism

2015 ◽  
Vol 719-720 ◽  
pp. 913-919
Author(s):  
Xi Jun Zhang ◽  
Hao Liu
Keyword(s):  
Operating System ◽  
Windows Ce ◽  
Protocol Stack ◽  
Discovery Process ◽  
Windows Xp

Instrument discovery as defined by the LXI standard implements the VXI-11 instrument discovery protocol. This mechanism allows the user to quickly discover instruments on a local subnet. The paper describes how to implement the auto-discovery RPC server compatible with LXI standard. For better understanding auto discovery process, it starts by introducing the VXI-11 protocol stack and follows with the deep analysis of auto discovery process. Finally, it discusses how to implement the RPC server. The RPC server supports both windows XP and windows CE operating system. The auto-discovery RPC server passes the tests on the Elgar LXI Browser, Agilent IO Library Suite and NI Measurement and Automation Explorer.

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