信息工程专业英语翻译论文

4000字。外文翻译中文。

信息工程专业英语

题目： 未来宽带网络的高性能住宅网关

学 院：信息工程

班 级：信工131（通信） 姓 名：郑浩

学 号：20131524109

指导老师：张树静

时 间：2016-06-29

4000字。外文翻译中文。

High Performance Residential Gateway for Future Broadband Network

Abstract-with development of broadband network and rich-content services from Internet, a high performance residential gateway is required in home network. In the paper, a residential gateway (RG) is presented based on multi-core network processor and media processor. The expansibility of RG hardware is described through hardware architecture. And it outlines the architecture of RG software, which supports multi-core and multi-processor hardware. In QoS of RG，queue control and session handoff are considered. The RG will support future broadband network.

Keywords-Home Network; Residential Gateway(RG); Quality of Service(QoS); Information Service; Multi-core Processor

I. INTRODUCTION

As development of broadband network and rich-content services from Internet, a high performance residential gateway is required in home network. Now, most of Internet conceptions focus on speedy network, colorful services, high performance and low cost. Many services, such as online game, Internet-TV, VoIP and VoD (Video on Demand), require network from real-time, fitter and package loss rate. A high performance residential gateway is required in home network. Comparing with other equipments of network, generally, Residential Gateway (RG) is an embedded system and has a lower hardware level. So RG becomes an important footing of multi-services network, such as telecommunication networks, TV networks and computer networks (Internet). And thin terminal impression of RG will being changed.

For high performance convergence networks, RG must be available, secure, manageable and accountable. Achieve these objectives, a residential gateway (RG) is presented based on multi-core network processor and media processor in the pape, including application scenario in section II, hardware architecture in section III, software architecture in section IV and QoS thinking in section V.

II. APPLICATION SCENARIO

The application scenario of RG is shown in Figure 1. RG is a gateway between home network and extenal network, such as telecommunication networks, TV networks and computer networks (Internet). Though RG, wire network and wireless network is built in home network, i.e. 802.11a/b/g wireless network and 10/100/1000Base LAN. Many home facilities, such as IP STB, computer, and laptop, can connect to the LAN through wireless or wire mode. Furthermore, multi-interfaces supports automation equipment，store device, digital camera, TV and telephone.

Based on the scenario, RG need support services from telecommunication networks, TV networks and computer networks (Internet), which requires many interface modes and processing capabilities. In interface modes, it should have optical fiber, coaxial cable, telephone line and so on. In processing capabilities, it should have functions of protocol adaptation, data encapsulation and data Syntax.

4000字。外文翻译中文。

On other hand, adapting to requirement of commercial network, RG support many key items: Security Scheme, QoS Requirement, Manageable and Accountable Scheme.

Firewall based NAT technology is an important guard. Many classes of service traffic, WWW, VoIP, Video and FTP etc., converge on RG. RG must process or forward them. Considering CPUs process capability and hardware resource, such CPU mips, memory capability and forward efficiency and so on. QoS control may be hard and ingenious. QoS scheme must be simply and availably implemented. A simple DiffServ[1] algorithm is placed on RG.

At the management respect, RG has local or remote management functions through Web and telenet. Many functions and options are configured by them. And service provider easily carries through software updates and new services deployment. RG have a maturity database for detail tolling entries.

III. HARDWARE ARCHITECTURE

RG mainly consists of four modules or parts, which are NPP (Network Processing Part), Media Process Part (MPP), NAM( Network Access Module) and NPM(Normal Periphery Module). Figure 2 shows the hardware architecture of RG.

RG has two main parts: NPP is mainly based on multi- core processor and MPP is mainly based on media processor. Main chip of NPP is CN3860 coming from Cavium corporation. CN3860 is Multi-core MIPS64 processors, which targets intelligent, multi-gigabit networking, control plane, storage, and wireless applications in next-generation equipment. The family includes fifteen software-compatible processors, with four to sixteen cnMIPS64 cores on a single chip that integrate next-generation networking I/Os along with the most advanced security and application hardware acceleration[2].Main chip of NPP is SMP8670 coming from Sigma Designs corporation. The SMP8670 provides a highly-integrated and high-performance solution for media processing. The Secure Media Processor architecture offers advanced content protection, supporting a wide variety of Digital Rights Management (DRM) and Conditional Access (CA) solutions[3]. NAM supports interfaces of fiber, coaxial cable, telephone line. NPM supports interfaces of SATA, DART, USB, DDR Memory and Flash Memory.

IV. SOFTWARE ARCHITECTURE

RG has five modules: RTOS(Real Time Operating System )module, Network Module, BSP(Board Support Package) Driver module, MPEG Decode and VoIP module. Figure 3 shows the software architecture of RG.

RTOS module has topmost control power of system resources, including hardwa …… 此处隐藏：17988字，全部文档内容请下载后查看。喜欢就下载吧 ……