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Study and Implementation of Wlan Access Controller Based on Embedded Systems

Author: YangXiangDong
Tutor: WangPeiDong
School: Harbin University of Science and Technology
Course: Applied Computer Technology
Keywords: Wireless LAN Bluetooth protocol uClinux TCP / IP HCI interface
CLC: TN925.93
Type: Master's thesis
Year: 2005
Downloads: 380
Quote: 0
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Abstract


The trend toward the network core technology of modern communication technology packet , narrowband wireless access technology . Mobile terminals and other devices can access the LAN by a router , gateway to access the Internet resources . Wireless LAN mobile terminal can really move the key wireless access control system , the system by the complex function embedded technology and corresponding wireless protocol technical support . Faced with an increasingly broad market prospects of embedded Linux , system developers must make a choice from the various options of the key technologies of the Linux kernel , file system . Linux is free software, its can be applied to a variety of hardware platforms ; , the source code can be obtained ; the microkernel itself built-in network support and highly modular characteristics , very suitable operating system for embedded development . uClinux is a branch of Linux , is designed CPU without MMU (memory management unit ) . Embedded Linux technology for short-range wireless communications equipment , flexible mobility , low power consumption , low radiation characteristics of the wireless LAN access controller technology combined with Bluetooth (Bluetooth) wireless devices to communicate with each other within the small range and with the Internet. This article first introduces the Bluetooth protocol stack structure and layers of functionality , and the core of the agreement is given workflow ; introduces embedded Linux systems theory . uClinux ported to EV44B0II to the development board to build a development platform for wireless LAN access control , based on the Bluetooth communication function . Wireless LAN access controller system hardware and software design thinking , given the structure of the system hardware and software , and the transformation of the various functional modules were studied in detail and realization .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications > Wireless subscriber loop ( Radio Access Network)
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