Evolvable Internet Architecture （EIA）

The end-to-end attribute of the Internet enables easy modification and deployment of applications running at the host. Competition among these applications promotes the development of the Internet. However,new protocols related to the core layer,and network routers and switches are often hard to successfully implement. This paper proposes an Evolvable Internet Architecture (EIA). It suggests that new network architectures can be plugged into network equipment or into a host through interfaces provided by EI...     

Generalized Distributed Multicell Architecture:Group Cell

In 1971, BellLab. proposed a cellular system scheme that passed the modelofpoint- to- point transmission and broadcast coverage. The scheme enlarged a mobile communication service area into multiple cells, and implemented coverage, handover, lower- power transmission and frequency reuse of these cells. This effectively solved the problems offrequency spectrum shortage, traffic capacity shortage, bad service quality and low frequency utilization ofthe mobile communication systems at that time (…     

A Fault-Tolerant Architecture for Parlay Application Server

1　IntroductionIntheNext GenerationNetwork (NGN ) [1 ]context,theconceptofApplicationServers (AS)shouldbeanevolutionofWeb basedASwhichisabletocreate,host,executeandmanagethenext generationenhancedservicesthoughaccessingandcontrollingSoftswitch[2 ] ormediaservers.There fore ,ASshouldbeanIT platformthatplaystheroleofIN SCFextendingtheirfunctionalityinordertocoverthenewnetworkscenarios[3] .AScanac cessandcontrolSoftswitchthroughthestandardprotocols (e .g .SIP[4] )andopenAPIs(e.g .Par…     

Edge Mobility Architecture — Routeing and Hand-off

This paper presents a network architecture for supporting edge mobility, and goes on to consider IP networks in which the core topology is fixed but where the hosts at the edge of the network may be mobile, as is the case in cellular networks. Within this architecture, mobile enhanced routeing (MER) protocols are used to support the prefix-routed requirements of the fixed Internet, along with the movement of IP addresses allocated to mobile nodes. Specific components for the support of such edge mobility (EMA:MER) are then outlined; these offer fixed/mobile IP network convergence, homogeneous IP handoff across heterogeneous access technologies, and inter-domain roaming across heterogeneous large-scale IP domains.     

Power Architecture助力IC设计突破障碍

日前,Power.org在北京举行了Power Architecture~(TM)大会,针对Power产品线路图、新兴的技术规范和基于Power的处理器、工具、软件,来自Power架构整个生态系统的硅IP供应商、工具厂商、软件开发商和产品设计方进行了演讲。     

Architecture of Intelligent Grouping and Resource Sharing Standard

Computer and communicationtechnologies have beendeveloping fast for 20 years.PersonalComputer (PC) as arepresentative ofcomputer technologydevelopment has become a part ofnormalwork and life. Meantime, theconstruction offiber optic networks,cable TVnetworks, and mobilecommunication networks has furtherdeveloped the computer industry andmade the Internet prevailing globally. Asthe communication seamlesslyintegrated into computer environment,the arithmetic and the communicationcapabilities hav…     

A Novel Receiver Architecture for DBF Antenna Array

The developments of the high speed analog to digital converters （ADC） and advanced digital signal processors （DSP） make the smart antenna with digital beamforming （DBF） a reality. In conventional M-elements array antenna system, each element has its own receiving channel and ADCs. In this paper, a novel smart antenna receiver with digital beamforming is proposed. The essential idea is to realize the digital beamforming receiver based on bandpass sampling of multiple distinct intermediate frequency （IF） signals. The proposed system reduces receiver hardware from M IF channels and 2M ADCs to one IF channel and one ADC using a heterodyne radio frequency （RF） circuitry and a multiple bandpass sampling digital receiver. In this scheme, the sampling rate of the ADC is much higher than the summation of the M times of the signal bandwidth. The local oscillator produces different local frequency for each RF channel The receiver architecture is presented in detail, and the simulation of bandpass sampling of multiple signals and digital down conversion to baseband is given. The principle analysis and simulation results indicate the effectiveness of the new proposed receiver.     

A Network Software Architecture Suitable for Service Customization

1　ＩｎｔｒｏｄｕｃｔｉｏｎＮｅｔｗｏｒｋｓｏｆｔｗａｒｅｆｏｒｓｅｒｖｉｃｅｃｕｓｔｏｍｉｚａｔｉｏｎｒｅｆｅｒｓｔｏｔｈｅｓｏｆｔｗａｒｅｓｙｓｔｅｍｔｈａｔｐｅｒｍｉｔｓｕｓｅｒｓｏｒａｐｐｌｉｃａｔｉｏｎｓｔｏｃｕｓｔｏｍｉｚｅｔｈｅｉｒｓｅｒｖｉｃｅｉｎｔｈｅｎｅｔｗｏｒｋｅｎｖｉｒｏｎｍｅｎｔｓ,ｓｕｃｈａｓＩｎｔｅｒｎｅｔ,ｏｒｔｅｌｅｃｏｍｍｕｎｉｃａ ｔｉｏｎｎｅｔｗｏｒｋｓ.ＡｃｔｉｖｅＮｅｔｗｏｒｋｓ[1 ] ａｎｄＰｒｏ ｇｒａｍｍａｂｌｅＮｅｔｗｏｒｋｓ[2～ 3] ａｒｅｔｗｏｔｙｐ…     

Technical Requirements and System Architecture of IPTV Services

Delivering the IPTV service in China requires integrating the communication security of telecommunications networks, the content of broadcast and television networks, and the network features ofInternet. Yet the IPTVis totally differentfrom the following 3 points:(1) Traditionaltelecommunicationsfeature person to person interactionswhile in IPTVwe see a new pattern ofperson to machine communication fromservice initiation through termination.(2) The IPTVallowing subscribers tocustomize t…     

Power Architecture年会 倡导合作与本土创新

10月25日,第四届Power A rchi-tecture年会在上海召开。PowerArchitecture是IBM生产的PowerPC、Power4、Power5、Power6、Power7以及其他厂商生产的PowerPC处理器的总称,由Power.org组织制定其技术标准,该组织的成员包括IBM、freescale、LSI、Synopsys、C*Core、VeriSilicon以及新近加入的Servergy     

Power Architecture架构为嵌入式处理器市场注入新动力

尽管没有ARM那样人尽皆知,但是源自IBM的Power Architecture技术一直是数字时代的前沿技术,如今这一技术占据了总额44亿美元的32/64位微处理器市场。一批产业链知名的公司组成了Power.org联盟,来推动Power Architecture技术与市场的发展。     

2011Power Architecture亚洲大会聚焦中国本土创新

为满足亚洲地区对于Power Architecture技术的爆炸性需求,Power.org组织日前在深圳举办了为期一天的2011 ASI APower Architecture大会。在针对下一代智能系统要求和挑战的"面向未来的ThinkPower"执行圆桌会议讨论上,     

Metadata and API Based Environment Aware Content Delivery Architecture

1IntroductionWiththe popularization of broadband network serviceand the rapid development of broadband applicationswith streaming media,the Quality of Service(QoS)requirement of networks is also increasing greatly.Althoughthe bandwidth is increasing and t…     

9-ZENIC： A Scalable Distributed SDN Controller Architecture

In a software-defined network,a powerful central controller provides a flexible platform for defining network traffic through theuse of software.When SDN is used in a large-scale network,the logical central controller comprises multiple physical servers,andmultiple controllers must act as one to provide transparent control logic to network applications and devices.The challenge is tominimize the cost of network state distribution.To this end,we propose Distributed ZTE Elastic Network Intelligent Controller(D-ZENIC),a network-control platform that supports distributed deployment and linear scale-out.A dedicated component in the D-ZENIC controller provides a global view of the network topology as well as the distribution of host information.The evaluationshows that balance complexity with scalability,the network state distribution needs to be strictly classified.     

SFF—The Single-Stream FPGA-Optimized Feedforward FFT Hardware Architecture

In this paper, a fast Fourier transform (FFT) hardware architecture optimized for field-programmable gate-arrays (FPGAs) is proposed. We refer to this as the single-stream FPGA-optimized feedforward (SFF) architecture. By using a stage that trades adders for shift registers as compared with the single-path delay feedback (SDF) architecture the efficient implementation of short shift registers in Xilinx FPGAs can be exploited. Moreover, this stage can be combined with ordinary or optimized SDF stages such that adders are only traded for shift registers when beneficial. The resulting structures are well-suited for FPGA implementation, especially when efficient implementation of short shift registers is available. This holds for at least contemporary Xilinx FPGAs. The results show that the proposed architectures improve on the current state of the art.     

Power Architecture亚洲大会召开 旨在推动本土企业自主创新

为满足亚洲地区对于Power Architecture技术的爆炸性需求，Power．org于2011年9月1日在中国深圳举办了为期一天的2011ASIA Power Architecture大会。大会旨在推动本土企业自主创新并展示技术的无限前景。此次大会得到IBM、Freescale、Synopsys,O＊Core、LSI、ChinaChip和VeriSijicon等公司的赞助。     

Investigation of Architecture and Essential Technologies of Wireless Sensor Network

The Wireless Sensor Network (WSN) is a distributed Ad-hoc network that consists of numerous and ubiquitous mini sensor nodes with the capabilities of wireless communicating and computing. The WSN is an "intelligent" system that enables self-fulfillment of…     

Computer Architecture, Supercomputer,and over-clock(上)

时间回到十七年前,当年我还是一个中学三年级的学生。某天,又到了上历史课的时候了。我的历史老师是个用心的好老师,除了上课之外,她也会和学生说说家常,谈一些人生的经验。不过,到了现在,我印象最深的是那天她说了一句很有意思的话。她说:“我今天本来不舒服,但想到各位求知若渴的眼神,让我不得不打起精神来为各位好好地上课……”     

Architecture optimization for energy-efficient resolution-scalable 8–12-bit SAR ADCs

Low power analog-to-digital converters (ADCs) in energy constrained devices, such as wireless sensor readout modules, often target dynamic resolution scalability with application context to reduce the average power consumption. This work implements such an 8–12-bit resolution scalable ADC, using an oversampling and noise-shaping successive approximating register (SAR) architecture. This architecture is selected for its high power efficiency after a detailed comparison of various resolution enhancing techniques within the SAR framework. Specifically, in this paper, three resolution enhancing techniques are reviewed and compared on their energy usage namely: the majority voting, the oversampling, and the oversampling with noise shaping SAR ADC. Furthermore, the proposed resolution scalable ADC simplifies the design of the noise shaping filter by enabling the use of a first order switched-capacitor low-pass filter for shaping the comparator noise and the in-band quantization noise. The ADC design also alleviates the matching concerns by using only an 8-bit capacitive digital-to-analog converter (DAC) for a maximum 12-bit resolution, or 11-bit effective number of bits (ENOB). The architecture can be configured to allow an operation from 8-bit traditional SAR ADC up to an 11-bit ADC by enabling the oversampling and noise shaping loops within the SAR architecture. This ADC is designed to operate with up to 320 kS/s and achieves a power scaling from 80 nW to 1.5 \(\upmu\)W, resulting in an steeper energy-ENOB scaling trend compared to state-of-the art resolution scalable ADCs.