摘要
RFID技术是一种非接触式无线射频通信自动识别技术,基于RFID技术和Internet等信息技术可以构建RFID公共服务信息网络,实现目标识别和数据交换。RFID公共服务信息网络的核心是RFID编码解析系统,作为一种公共资源,RFID编码解析系统需要接受高速网络中大量客户的并发访问,对系统的性能提出了极大挑战。本文针对高速网络中编码解析服务的特点,提出高性能RFID编码解析系统方案,具有重要实用意义。
RFID编码解析系统需要处理海量的编码解析请求,现有软件服务器的处理能力有限,逐渐成为提高编码解析系统服务能力的瓶颈。针对此问题,本文设计并实现一种软硬件结合的RFID编码解析系统,将部分软件功能转移到高速网络硬件设备上。系统利用高速硬件完成编码解析请求的分类,达到降低编码解析请求速率以满足软件服务器处理性能的目的,软件服务器对分流后的编码解析请求进行响应,从而支持大流量高速的RFID编码解析请求访问。
本文构建了流量发生器、硬件分类器和软件服务器组成的高速网络测试场景,对高性能RFID编码解析系统方案进行性能测试,结果显示系统性能与硬件编码解析分类器的级数以及软件编码解析服务器的个数相关,当采用多级分流时本系统的处理性能满足目前编码解析请求高速并发的情形。
RFID is an automatic identification technology by the way of non-contact and radio frequency communications. Based on RFID technology and Internet information technologies, RFID public service information network could implement target identification and information exchanging. The core of RFID public service information network is RFID code resolution service system. As a kind of public resource, RFID code resolution service system needs to tolerant a large amount of concurrent client accesses in high-speed network, which greatly challenges the system performance. Considering the features of code resolution service in high-speed network, this thesis proposes the scheme of high performance code resolution system, which will have great practical significance.
RFID code resolution service system needs to deal with massive code resolution request,however the capacity of existing software server is limited, which becomes the bottleneck to improve the capacity of RFID code resolution service system. To address this problem, this thesis designs and implements a kind of code resolution system with hardware and software integration. This system could transfer some software functions to the high-speed network hardware devices, employing high-speed hardware to implement the classification of code resolution request, which reduces the coding rate and meets the requirements of the processing performance of software server. Then the software server responds to the classified request, supporting high-speed RFID code resolution access requests.
This thesis constructs high-speed test scenario for performance testing, which includes flow generator, hardware classification and software server. The results show that system performance relates to the series of hardware code resolution classification and the number of software code resolution servers. It is scalable and satisfying the current concurrent high-speed code resolution request when achieving multi-level classification.
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