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设计应用技术语言的SIP协议栈设计与实现邓杨凡（中国电子科技集团公司第三十研究所，四川会话发起协议（Session Initiation Protocol，SIP）是由互联网工程任务组（Internet Engineering Task Force，它是一个基于文本的应用层控制协议，能够创建、下一代网络（Next Generation Network，Multimedia Subsystem，IMS）等网络，支持语音、视频、数据等多媒体业务。
基于协议栈，具备作为客户端并发发起或处理多路呼叫的能力。
会话发起协议（SIP）；客户端；Go语言；多媒体通信Design and Implementation of a SIP Protocol Stack Based on Go LanguageDENG YangfanInstitute of CETC, Chengdu 610041Abstract: Session Initiation Protocol (SIP) is a multimedia communication protocol formulated by the Internet Engineering Task Force (IETF). It is a text-based application layer control protocol, which can create, modify and实体都是事务用户。
当一个事务用户希望发送请求时，就创建一个客服端事字符集。
种类型，请求消息和响规定的通用消息格式，包括起始行、一个或多个消息头、一个空行以及一个可选消息体。
和状态行（的起始行，状态行是响应消息的起始行。
请求消息包含请求行、消息头、空行以及消息体，响应消息包括状态行、消息头、空行以及消息体。
6种请求消息如表表1 SIP请求消息功能说明向SIP服务器注册用于建立用户代理之间的媒体会话用于终止已建立的会话，可以由主叫或者被叫方发送用于查询的用户代理或围绕其功能的代理服务器，并发现其当前的可用性用于确认最后响应的用于终止未建立会话响应消息的第一行由状态码构成，表示服务信令和实时传输协议（一套多级流水线的文本消息处理流程。
现代电子技术Modern Electronics TechniqueJul.2023Vol.46No.142023年7月15日第46卷第14期0引言阵列化是当前电子信息装备的重要发展趋势，无论从作战需求还是从装备升级换代方面考虑，陆海空天各类平台均在向阵列化发展。
目前，射频收发机在研制上主要基于低集成度分立器件的路线，通用化程度低、体积重量大、功效抵下、性能指标一致性差，成本居高不下，无法满足先进平台的使用需求[1]。
为解决这一系列瓶颈问题，系统级封装（System in Package,SiP ）设计理念被提出。
SiP 是一种新型的封装技术，在ITRS2005中对SiP 的定义是：系统级封装是采用任何组合，将多个具有不同功能的有源电子器件与可选择的无源组件，以及诸如微机电或者光学器件等其他器件，组装成为可以提供多种功能的单个标准封装件，形成一个系统或者子系统[2]。
SiP 可以在一个衬底上集成多种芯片以及无源器件，极大地提高了电路和系统的集成度。
SiP 封装能够实现不同的工艺、异质材料的系统集成，如可实现表面贴装、有源（射频、数字、模拟等）/无源器件埋入的灵活组合。
由于可以使用多种工艺，使得在每一个应用领域都可以采用最合适的技术，如无源滤波器可以采用声表或者体声波滤波器，功率放大器可以使用GaAs 工艺，逻辑电路可以采用硅工艺等等。
由于SiP 采用“集百家之所长”的方式来进行电路系统搭建，使得研发成本大大降低，研发周期大大缩短，极大地增加了SiP 产品的竞争力。
SiP 封装技术与现有封装工艺兼容或具有继承DOI ：10.16652/j.issn.1004‐373x.2023.14.024引用格式：徐晓瑶，黄晓国，张琦，等.基于数字化设计仿真的射频干扰抵消SiP 设计[J].现代电子技术，2023，46（14）：141‐146.基于数字化设计仿真的射频干扰抵消SiP 设计徐晓瑶，黄晓国，张琦，姜建军（中国电子科技集团公司第三十六研究所，浙江嘉兴314033）摘要：随着无线电子系统朝着阵列化、微系统化、高频化等方向发展，系统调试难、失效、故障难以排除等问题逐渐凸显，基于“经验设计+后续调试”的传统设计方法已难以满足实际需求。
Project Statistics•Design for Manufacture Methodology for SiP –Academic partners : Lancaster University & Greenwich–Industrial partners : NXP, Flowmerics, Coventor& Selex –£206K –Nov 2005 –Nov 2007–Focus : Reliability Engineering of SiP assemblies •Integrated Health Monitoring of MNT Enabled Integrated Systems “I-Health”–Academic partners : Lancaster University & Heriot WattUniversity–Industrial partners : NXP, QinetiQ, Coventor, MCE–Focus : Embedded Test & Health Monitoring of SiP based systemsSiP-Design•Design for Manufacture Methodology for SiP –Realise algorithms and associated code to generate anintegral thermal map across a behavioural model of anSiP structure.–Realise algorithms and associated code to model andcouple electromagnetic and electrostatic fields intofunctional devices and materials within an SiPstructure.–Realise a method of injecting defects and degradationinto structural SiP models. Address the Test Issue.–Demonstrate the above advances in an industrial Virtual Prototype environment“I-Health”project SP/05/01/03•Integrated Health Monitoring of MNT Enabled Integrated Systems–The potential to realise low cost temperature, stress, humidity and EM field sensors for integration in a health monitoring architecture.–Electrical only strategies that requires low performance electronics to monitor non-electrical functions both on-line and in production.– A solution for embedding both sensing and electrical monitoring functions within a SiP level test access and control architecturetogether with decision making functions based on re-use and / orreconfiguration of existing functions and both fault tolerance and self-repair through redundancy and emulation.–Implementation solutions including on-chip, on-substrate and through dedicated low cost health inserts for both silicon and LTCC platforms.University of Greenwich •Centre for Numerical Modelling and Process Analysis– 5 Profs, 20+ Post Docs, 40 + PhD’s–One of largest groups in UK•Electronics and Microsystems– 2 Profs, 3 Post Doc’s, 5 PhD’s–Over £2m of support since 1998 in electronics and microsystems modelling.Device FabricationNitrogenLead-Free Wave SolderingOptical interconnects Thermo-mechanical (alignment)Laser SolderingAccelerated Life Testing Fatigue, etcLancaster University•Centre for Microsystems Engineering–4 academic staff, 5 RA’s, 4 PhD’s–Delivered against £3.4M in grant income over the past 10years–Leads the European Design for Micro & Nano Manufacture community through the FP6 Network of Excellence(PATENT-DfMM)What is System-in-Package, or SiP?•The integration of several Integrated Circuits and components of various technologies (RF, analogue, digital, in Si, in GaAs) in a single package, resulting in one or several electronic systems•Related key words:–Heterogeneous Integration, System-on-Chip, SoPStacked StructuresSide-by-Side Structures EmbeddedStructuresSiP key drivers and benefits•Size reduction•Functional performance improvement •Combination of several functions•Cost reduction•Speed-to-market due to the reuse of existing ICs •Complete system integrationIntegrated Discretes(ESD protection + EMI No redistribution layer (RDL) needed: direct bump on IO.FM radio (2005) RDL needed (higher cost than directStill few product linesActive die d d f hyearMCM + discrete passives on laminate MCM + discretepassives on laminate + Integrated Passive Multi-Chip Modules (MCM)100%silicon -based SiP 199019992004P r o p o r t i o n o f S i Pyear MCM + discrete passives on laminateMCM + discrete passives on laminate + Integrated PassivesMultiChip Modules (MCM)100%Silicon-basedSiP199019992004= leadframe based+ WL-CSPWL-SiP: challenges•Larger WL-CSP modules (because SiP are larger than current WL-CSP parts)–Board Level Reliability(solder fatigue issue)•Larger WL-CSP modules–Board Level Reliability(solder fatigue issue)•Assembly flow–Final Test–Marking–Packing–Storing•Customer acceptance–Customers and assemblers (pick & place, under fill dispensing on PCB)–Designers (sockets for evaluation boards)–PCB makers: downwards CTE curve to be supportedNumber of TMC cycles% u n i t s f a i l i n gImproved Si technologies,lower PCB CTE’sLarger WLP modulesBoard Level Reliability: solder fatigue (1)•Visible by thermal cyclingSimulation and Modelling Requirements•Accurate simulation and modelling is useful–In the short term•To assess reliability of current WL-CSP technologies withrespect to larger sizes•To compare possible technology options–New materials (underfills, bump alloys, PCB’s)–New balling layout rules–In the longer term•To “virtually qualify”WL-CSP parts:–How to make sure a new product has every chance to first timepass qualification stresses according to the company specificGeneral Quality System?One-eight of the SiPBalls (SAC105-Sn)UF2 UF3SiP Parameters:Test Passive die thicknessUF Size Test Passive dieUF SizeInelastic material behaviour of solder (Creep Rate Equation);Different SiP PackagesUF3Stacked Die SiPEmbedded Die SiPP a s s i v e Di eA c t i v e D iePCBA c t i v e D ieP a s s i v e Di eMold CompoundUF3Dielectric2Dielectric1CopperIn ModelMold CompoundFixed Chip Thickness80μmMold Thickness20μmMold Thickness120μmMold Thickness320μmMoldEffect of Mold Compound ThicknessChipMold Compound Properties:CTE:α1=10ppm/ºC, α2=45ppm/ºC(T g =130ºC)Young Modulus = 20.E+9Pa Poisson’s Ratio = 0.35Embedded Die SiP without UnderfillHealth Monitoring – embedded conceptTemperature sensor EMI probeMEMSCarrier substrate Passives: test response read out & stimulus injectionActive: Health monitor central unit- Integrated sensors: temperature, EMI probes etc… - MEMS testing - System reconfigurationHealth Monitor – Insert ConceptLoop antenna Temperature sensor + passive componentsCMOS die MEMSActive dieLow cost plastic insert• Possibility for stacked SiP • Standard pin-out / foot print for test interface? • Dependent on advances in polymer electronicsNon-electrical functions – bias superposition•100 µmElectrical only test & monitoring techniques for MNT systems9 Feasibility on magnetometer, accelerometer, conductance sensorPhysical inputTranducer Interface ElectronicsDSPTransducer outputBiasingElectrical Test signal Test signal filter comparatorOn-line-test outputIs it possible to use this method as a generic method to test MEMS structures?Implementation – embedded accelerometersTest output is unstable under acceleration conditions – on-line applicability??fluctuationDemonstrator board with QinetiQ accelerometerTest output with no accelerationTest output with 10g acceleration @ 100Hz• • •Step 1: Identify the causes of the fluctuation Step 2: Develop solutions to solve the issue of the test output fluctuation Step 3: Evaluate the fault coverage capability using fault simulationSolution – encoding of test stimuli• Encoding the test stimulusModulation of the test sine wave by the codeAccelerationLFSR LFSR LP LP2 2 LP1 HPOperational outputVout VdemLP3 Cov. Cov. Cor. Cor.×El/Acc El/Acc+Sensor × Cov CorGeneration of a pseudo-random bit code sequenceCarrierDemod.VcodeTest outputsNovel architecture • • • • • A pseudo-random code sequence modulates the test sine wave The code is retrieved by demodulation at the output Covariance and correlation algorithms are applied The covariance gives a value related to the sensor sensitivity The correlation gives information on the integrity of the covarianceApplication to RF MEMS switchBridge UP Dielectric DOWNSubstrate ConductorVbias RF choke RF in DC block DC block RF outRaytheon/TI* switch: Cup = 35fF (Insertion loss@10GHz = 0.025 dB) Cdown = 3.5pF (Isolation@10GHz = 15 dB)Cup / CdownSwitch model with the biasing circuitry in a shunt configuration*Raytheon/TI switchTest implementation strategyCtf Vtr Rtf Ract Vact Actuation generator RF in Vin RF switch controller Cp Lch Cbl Vs Cbl Vout Cup / Cdown Health Monitor RF out Vbias Cstim Test generator Vstim Enveloppe detector Test response analyserSwitch with passive componentsPassive components integrated on the substrateConclusions• Work to date focused around silicon based WLSiP– Embedded health monitoring – Strategies for non-electrical functions – Reliability simulation – structure & assembly • Impact of underfill on solder reliability • Impact of moulding process • Impact of fan-out • Analytical reliability prediction strategies developed – Extend to SoP – eg. Ceramic based – Investigate integration into EDA tools。
成都石室中学2023 — 2024学年度上期高2024届十月月考英语试卷（满分150分考试时间：120分钟）第I卷第一部分听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。
每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What is new at Uncle Jim’s farm?A. Cows.B. Sheep.C. Goats.2. What does the woman want about a new car?A. A smoother ride.B. A larger size.C. The cheaper fuel.3. What is the woman scared to do?A. Make a new dish.B. Eat the food.C. Lie to the man.4. What does the woman think of the man?A. He isn’t hard-working.B. He isn’t strong.C. He isn’t polite.5. What does the man find hard to understand?A. How to plan a book.B. What to write about.C. Where to find the time.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。
每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听下面一段对话，回答第6至第7题。
A/D/V Analysis/Development/V alidation 分析/发展/验证AA Approve Architecture 审批体系ACD Actual Completion Date 实际完成日期0ALBS Assembly Line Balance System 装配线平衡系统ANDON 暗灯AP Advanced Purchasing 提前采购API Advanced Product Information 先进的产品信息APQP Advanced Product Quality Planning 先期产品质量策划A TT Actual Tact Time 实际单件工时BIQ Building in Quality 制造质量BIW Body In White 白车身BOD Bill of Design 设计清单BOE Bill of Equipment 设备清单BOL Bill of Logistic 装载清单BOM Bill of Material 原料清单BOP Bill of Process 过程清单BPD Business Plant Deployment 业务计划实施CAD Computer-Aided Design 计算机辅助设计CAE Computer-Aided Engineering 计算机辅助工程(软件)CARE Customer Acceptance & Review Evaluation 用户接受度和审查评估CAS Concept Alternative Selection 概念可改变的选择CIP Continue Improve Process 持续改进CIT Compartment Integration Team 隔间融合为组CKD Complete Knockdown 完全拆缷CMM Coordinate Measuring Machines 坐标测量仪00CPV Cost per V ehicle 单车成本CR&W Controls/Robotics & Welding 控制/机器人技术和焊接CS Contract Signing 合同签订0CTD Cumulative Trauma Disadjust 累积性外伤失调CTS Component Technical Specification 零件技术规格CVIS Completed V ehicle Inspection Standards 整车检验标准D/PFMEA Design/process failure mode & effects analysis 设计/过程失效模式分析DAP Design Analysis Process 设计分析过程DES Design Center 设计中心DFA Design for Assembly 装配设计DOE Design Of Experiments 试验设计0DOL Die Operation Line-Up 冲模业务排行0DPV Defect per V ehic le 单车缺陷数DQV Design Quality V erification 设计质量验证DRE Design Release Engineer 设计发布工程师DRL Direct Run Loss 直行损失率DRR Direct Run Run 直行率DSC Decision Support Center 决策支持中心ECD Estimated Completion Date 计划完成日期EGM Engineering Group Manager 工程组经理ELPO Electrode position Primer 电极底漆ENG Engineering 工程技术、工程学EOA End of Acceleration 停止加速EPC&L Engineering Production Cntrol &Logistics 工程生产控制和后勤EQF Early Quality Feedback 早期质量反馈EWO Engineering Work Order 工程工作指令FA Final Approval 最终认可FE Functional Evaluation 功能评估FEDR Functional Evaluation Disposition Report 功能评估部署报告FFF Free Form Fabrication 自由形态制造FIN Financial 金融的FL 听FMEA Failure Mode and Effects Analysis 失效形式及结果分析FPS Fixed Point Stop 定点停FTP File Transfer Protocol 文件传送协议FTQ First Time Quality 一次送检合格率0GA General Assembly 总装GA Shop General Assembly Shop 总装车间Paint Shop 涂装车间Body Shop 车身车间Press Shop 冲压车间GCA Global Customer Audit 全球顾客评审0GD&T Geometric Dimensioning & Tolerancing 几何尺寸及精度GDS Global Delivery Survey 全球发运检查GM General Motors 通用汽车GMAP GM Asia Pacific 通用亚太GME General Motors Europe 通用汽车欧洲GMIO General Motors International Operations 通用汽车国际运作0 GMIQ General Motors Initial Quality 通用汽车初始质量GMPTG General Motors Powertrain Group 通用汽车动力组GMS Global Manufacturing System 通用全球制造系统GP General Procedure 通用程序GQTS Global Quality Tracking System 全球质量跟踪系统0GSB Global Strategy Board 全球战略部HV AC Heating, V entilation ,and Air Conditioning 加热、通风及空调I/P Instrument Panel 仪表板IC Initiate Charter 初始租约0ICD Interface Control Document 界面控制文件IE Industrial Engineering 工业工程IEMA International Export Market Analysis 国际出口市场分析0ILRS Indirect Labor Reporting System 间接劳动报告系统IO International Operations 国际业务IOM Inspection Operation Mathod 检验操作方法IOS Inspection Operation Summary 检验操作概要IPC International Product Center 国际产品中心IPTV Incidents Per Thousand V ehicles 每千辆车的故障率IQS Initial Quality Survey 初始质量调查IR Incident Report 事故报告ISP Integrated Scheduling Project 综合计划ITP Integrated Training Process 综合培训方法0ITSD Interior Technical Specification Drawing 内部技术规范图IUV A International Uniform V ehicle Audit 国际统一车辆审核JES Job Element Sheet 工作要素单JIS Job Issue Sheet 工作要素单JIT Just in Time 准时制JPH Job per hour 每小时工作量KCC Key Control Characteristics 关键控制特性KCDS Key Characteristics Designation System 关键特性标识系统KPC Key product Characteristic 关键产品特性0 0LT Look at 看MFD Metal Fabrication Division 金属预制件区MFG Manufacturing Operations 制造过程MIC Marketing Information Center 市场信息中心MIE Manufacturing Integration Engineer 制造综合工程师MKT Marketing 营销0MLBS Material Labor Balance System 物化劳动平衡系统MMSTS Manufacturing Major Subsystem Technical Specifications 制造重要子系统技术说明书MNG Manufacturing Engineering 制造工程MPG Milford Proving Ground 试验场MPI Master Process Index 主程序索引MPL Master Parts List 主零件列表MPS Material Planning System 原料计划系统MRD Material Required Date 物料需求日期MSDS Material Safery Data Sheets 化学品安全数据单0MSE Manufacturing System Engineer 制造系统工程MSS Market Segment Specification 市场分割规范MTBF Mean Time Between Failures 平均故障时间MTS Manufacturing Technical Specification 生产技术规范00MVSS Motor V ehicle Safety Standards 汽车发动机安全标准NAMA North American Market Analysis 北美市场分析NAO North American Operations 北美业务NAOC NAO Containerization NAO货柜运输NC Numerically Controlled 用数字控制NOA Notice of Authorization 授权书NSB NAO Strategy Board 北美业务部OED Organization and Employee Development 组织和员工发展OSH Occupational Safety & Health 职业安全健康OSHA Occupational Safety & Health Act 职业安全与健康法案OSHMS Occupational Safety & Health Management System 职业安全健康管理体系OSHS Occupational Safety & Health Standards 职业安全标准00PA Production Achievement 生产结果PAA Product Action Authorization 产品临时授权0PAC Performance Assessment Committee 绩效评估委员会PACE Program Assessment and Control Environment 项目评估和控制条件PAD Product Assembly Document 产品装配文件0PARTS Part Readiness Tracking System 零件准备跟踪系统PC Problem Communication 问题信息PCL Production Control and Logistics 生产控制和支持PCM Process Control Manager 工艺控制负责人PCR Problem Communication Report 问题交流报告PDC Portfolio Development Center 证券发展中心PDM Product Data Management 产品资料管理PDS Product Description System 产品说明系统0PDT Product Development Team 产品发展小组PED Production Engineering Department 产品工程部PEP Product Evaluation Program 产品评估程序PER Personnel 人员PET Program Execution Team 项目执行小组PGM Program Management 项目管理0PI People Involement 人员参与PIMREP Project Incident Monitoring and Resolution Process 事故方案跟踪和解决过程PLP Production Launch Process 生产启动程序PMI Process Modeling Integration 加工建模一体化PMM Program Manufacturing Manager 项目制造经理0PMR Product Manufacturability Requirements 产品制造能要求0PMT Product Management Team 产品车管理小组POMS Production Order Management System 产品指令管理小组POP Point of Purchase 采购点PP Push - Pull 推拉PPAP Production Part Approval Process 生产零部件批准程序PPE 个人防护用品PPH Problems Per Hundred 百辆车缺陷数PPM Problems Per Million 百万辆车缺陷数PPS Practical Problem Solving 实际问题解决PR Performance Review 绩效评估PR/R Problem Reporting and Resolution 问题报告和解决PRTS Problem Resolution and Tracking System 问题解决跟踪系统PSC Portfolio Strategy Council 部长职务策略委员会PST Plant Support Team 工厂支持小组PTO Primary Tryout 第一次试验PTR Production Trial Run 生产试运行0PUR Purchasing 采购PVD Production V ehic le Development 生产汽车发展PVM Programmable V ehicle Model 可设计的汽车模型QA Quality Audit 质量评审QAP Quality Assessment Process 质量评估过程QBC Quality Build Concern 质量体系构建关系QC Quality Characteristic 质量特性QCOS Quality Control Operation Sheets 质量风险控制QE Quality Engineer 质量工程师QET Quality Engineering Team 质量工程小组QFD Quality Function Deployment 质量功能配置QRD Quality, Reliability,andDurability 质量、可靠性和耐久力QS Quality System 质量体系QUA Quality 质量RC Review Charter 评估特许0RCD Required Completion Date 必须完成日期RFQ Request For Quotation 报价请求RGM Reliability Growth Management 可靠性增长小组RONA Return on Net Assets 净资产评估RPO Regular Production Option 正式产品选项RQA Routing Quality Assessment 程序安排质量评定RT&TM Rigorous Tracking and Throughout Managment 严格跟踪和全程管理00 SDC Strategic Decision Center 战略决策中心SF Styling Freeze 造型冻结SIL Single Issue List 单一问题清单SIP Stansardized Inspection Process 标准化检验过程SIU Summing It All Up 电子求和结束SL System Layouts 系统规划SLT Short Leading Team 缩短制造周期SMARTSMBP Synchronous Math-Based Process 理论同步过程SME Subject Matter Expert 主题专家SMT Systems Management Team 系统管理小组SNR 坏路实验SOP Start of Production 生产启动SOP Safe Operating Practice 安全操作规程SOR Statement of Requirements 技术要求0SOS Standardization Operation Sheet 标准化工作操作单SOW Statement of Work 工作说明SPA Shipping Priority Audit 发运优先级审计SPC Statistical Process Control 统计过程控制SPE Surface and Prototype Engineering 表面及原型工程SPO Service Parts Operations 配件组织SPT Single Point Team 专一任务小组SQA Supplier Quality Assurance 供应商质量保证（供应商现场工程师）SQC Supplier Quality Control 供方质量控制SQD Supplier Quality Development 供应方质量开发SQE Supplier Quality Engineer 供方质量工程师SQIP Supplier Quality Improvement Process 供应商质量改进程序SSF Start of System Fill 系统填充SSLT Subsystem Leadership Team 子系统领导组SSTS Subsystem Technical Specification 技术参数子系统STD Standardization 标准化0STO Secondary Tryout 二级试验SUI 安全作业指导书SUW Standard Unit of Work 标准工作单位SWE Simulated Work Environment 模拟工作环境TAG Timing Analysis Group 定时分析组TBD To Be Determined 下决定TCS Traction Control System 牵引控制系统TDC Technology Development Centre 技术中心TDMF Text Data Management Facility 文本数据管理设备TG Tooling 工具TIMS Test Incident Management System 试验事件管理系统TIR Test Incident Report 试验事件报告TMIE Total Manufacturing Integration Engineer 总的制造综合工程0TOE Total Ownership Experience 总的物主体验TPM Total Production Maintenance 全员生产维护TSM Trade Study Methodology 贸易研究方法TT Tact Time 单件工时0TVDE Total V ehicle Dimensional Engineer 整车外型尺寸工程师TVIE Total V ehic le Integration Engineer 整车综合工程师TWS Tire and Wheel System 轮胎和车轮系统UA W United Auto Workers 班组UCL Uniform Criteria List 统一的标准表UDR Unverified Data Release 未经核对的资料发布UPC Uniform Parts Classification 统一零件分级V AE V ehicle Assembly Engineer 车辆装配工程师V APIR V ehicle & Progress Integration Review Team 汽车发展综合评审小组V ASTD V ehicle Assembly Standard Time Data 汽车数据标准时间数据VCD V ehicle Chief Designer 汽车首席设计师VCE V ehicle Chief Engineer 汽车总工程师VCRI V alidation Cross-Reference Index 确认交叉引用索引VDP V ehicle Development Process 汽车发展过程VDPP V ehicle Development Production Process 汽车发展生产过程VDR V erified Data Release 核实数据发布VDS V ehicle Description Summary 汽车描述概要VDT V ehicle Development Team 汽车发展组0VDTO V ehicle Development Technical Operations 汽车发展技术工作VEC V ehicle Engineering Center 汽车工程中心0VIE V ehicle Integration Engineer 汽车综合工程师VIN V ehicle Identification Number 车辆识别代码VIS V ehicle Information System 汽车信息系统VLE V ehicle Line Executive 总装线主管VLM V ehicle Launch Manager 汽车创办经理VMRR V ehicle and Manufacturing Requirements Review 汽车制造必要条件评审VOC V oice of Customer 顾客的意见VOD V oice of Design 设计意见VS V alidation Station 确认站VSAS V ehicle Synthesis,Analysis,and Simulation 汽车综合、分析和仿真VSE V ehicle System Engineer 汽车系统工程师VTS V ehicle Technical Specification 汽车技术说明书WBBA Worldwide Benchmarking and Business Analysis 全球基准和商业分析WOT Wide Open Throttle 压制广泛开放WPO Work Place Organization 工作场地布置WWP Worldwide Purchasing 全球采购COMMWIP Correction 纠错浪费Overproduction 过量生产浪费Material Flow 过度物料移动浪费Motion 过度移动浪费Waiting 等待浪费Inventory 过度库存浪费Processing 过度加工浪费。
Key Features and Benefits Revolutionarily new designYealink 's SIP Phones continue to evolve, the SIP-T4 Series have been designed by pursuing ease of use in even the tiniest details, these new design include paper label free design, new foot stand allows two posi-tions for the device, non-slip rubber feet, ergonomic recessed buttons, etc.HD AudioYealink Optima HD Voice refers to the combination of software and hardware design as well as the implementation of wideband technology to maximizes the acoustic performance. Coupled with advanced acoustic clarity technology such as full duplex, echo cancellation, adaptive jitter buffer etc. Creating an amazing face-to-face live experience.A rich visual experience for applicationsSIP-T46G Supports vast productivity-enhancing feature such as XML Browser, SCA, BLF List, call forward, call transfer, 3-way conferencing, the 4.3 inch backlit color display enables rich visual presentation and easier navigation of the menu. Three pages of 10 flexible buttons are shown on the display can be programmed up to 27 various features.Advanced connectivity and expandabilityFor network connectivity, the SIP-T46G comes with two Gigabit Ethernet ports, one of them suitable for Power over Ethernet. Supports a variety device connections, including EHS headset and USB. A built-in USB 2.0 port can also be used for Bluetooth, Wi-Fi and USB recording.Supports up to 6 Expansion Module, adding up to 240 additional buttons with a screen based LCD display and LED system.Highly secure transport and interoperabilityThe Communicator uses SIP over Transport Layer Security (TLS/SSL) to provide service providers the latest technology for enhanced network security. The range is certified compatible with 3CX and BroadSoft Broadworks, ensuring excellent compatibility withleading soft switch suppliers.SIP-T46GRevolutionary SIP phone with a multitude of professional featuresThe SIP-T46G is Yealink latest revolutionary IP Phone for executive users and busy professionals. New designs appears the commerce, with high-resolution TFT color display, delivering a rich visual experience. Yealink Optima HD technology enables rich, clear, life-like voice communications. Supports Gigabit Ethernet, a variety of device connections, including EHS headset and USB. With programmable keys, the IP Phone supports vast productivity-enhancing features.Optima HD VoiceGigabit Paperless • Revolutionarily new design • Yealink Optima HD voice • Dual-port Gigabit Ethernet• 4.3" 480 x 272-pixel color display with backlight • Wi-Fi via WF40• Bluetooth via BT40• USB recording• Up to 16 SIP accounts • Paper label free design • PoE support• Headset, EHS support• Supports expansion modules • Stand with 2 adjustable angles • Wall mountable• Simple, flexible and secureprovisioning optionsUSB 2.0About YealinkYealink is a global leading provider of enterprise communication and collaboration solutions, offering video conferencing service to worldwide enterprises. Focusing on research and development, Yealink also insists on innovation and creation. With the outstanding technical patents of cloud computing, audio, video and image processing technology, Yealink has built up a panoramic collaboration solution of audio and video conferencing by merging its cloud services with a series of endpoints products. As one of the best providers in more than 140 countries and regions including the US, the UK and Australia, Yealink ranks No.1 in the global market share of SIP phone shipments.CopyrightCopyright © 2018 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO., LTD.Copyright © 2018 Yealink(Xiamen) Network Technology CO., LTD. All rights reserved. No parts of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, photocopying, recording, or otherwise, for any purpose, without the express written permission of Yealink(Xiamen) Network Technology CO., LTD.Technical SupportVisit Yealink WIKI (/) for firmware downloads, product documents, FAQ, and more. For better service, we sincerely recommend you to use Yealink Ticketing system (https://) to submit all your technical issues.YEALINK(XIAMEN) NETWORK TECHNOLOGY CO.,LTD.Web: Addr: No.1 Ling-Xia North Road, High Tech Park,Huli District, Xiamen, Fujian, P.R. ChinaCopyrigh t©2018Yealink Inc. All right reserved.。
近年来，随着深度学习（Deep Learning）技术的发展，卷积神经网络（Convolutional Neural Network，CNN）在目标检测、人脸识别等机器视觉领域广泛应用。
由于CNN的算法复杂度对运行平台的计算要求较卷积神经网络SIP微系统实现吕浩1，2，张盛兵1，王佳1，刘硕2，景德胜21.西北工业大学计算机学院，西安7100722.中国航空工业集团公司西安航空计算技术研究所，西安710065摘要：近年来，微电子技术进入到纳电子/集成微系统时代，SIP（System in Package）和SOC（System on Chip）是微系统实现的两种重要技术途径；基于神经网络的深度学习技术在图形图像、计算机视觉和目标识别等方面得以广泛应用。
卷积神经网络的深度学习技术在嵌入式平台的小型化、微型化是一项重要研究领域。
如何将神经网络轻量化和微系统相结合，达到性能、体积和功耗的最优化平衡是一难点。
介绍了一款将SIP技术和基于FPGA的卷积神经网络相结合的微系统实现方案，它以Zynq SOC和FLASH、DDR3存储器为主要组成，利用SIP高密度系统封装技术进行集成，在其中的PL端（FPGA）采用HLS来设计CNN（Convolutional Neural Network，卷积神经网络）中的卷积层和池化层，生成IP核，分时复用构建微系统，设计实现了Micro_VGGNet轻量化模型。
测试采用MNIST手写数字数据集作为训练和测试样本，该微系统能够实准确识别手写数字，准确率达到98.1%。
体积仅为30mm×30mm×1.2mm，在100MHz工作频率下，图像处理速度可达到20.65FPS，功耗仅为2.1W，实现了轻量化神经网络微系统的多目标平衡（性能、体积和功耗）。
关键词：微系统；系统级封装（SIP）；卷积神经网络（CNN）；数字识别文献标志码：A中图分类号：TP368.2doi：10.3778/j.issn.1002-8331.2009-0011Implementation of Convolutional Neural Network SIP MicrosystemLYU Hao1，2,ZHANG Shengbing1,WANG Jia1,LIU Shuo2,JING Desheng21.School of Computer Science and Engineering,Northwestern Polytechnical University,Xi’an710072,China2.Xi’an Aeronautics Computing Technique Research Institute,Aviation Industry Corporation of China,Xi’an710065,ChinaAbstract：In recent years,microelectronics technology has entered the era of nanoelectronics/integrated microsystems. SIP（System in Package）and SOC（System on Chip）are two important technical approaches for the realization of micro-systems.Deep learning technology based on neural network is widely used in computer vision and target recognition areas.How to combine lightweight neural network with micro system to achieve the optimal balance of performance, volume and power consumption is a difficult problem.The miniaturization of embedded platforms for deep learning technology of convolutional neural networks is an important research field.This article introduces a microsystem imple-mentation scheme that combines SIP technology and FPGA-based convolutional neural network.It uses Zynq SOC, FLASH,and DDR3memory as the main components,and uses SIP high-density system packaging technology for integra-tion.The PL end（FPGA）uses HLS to design the convolutional layer and pooling layer in CNN（Convolutional Neural Network）,generate IP cores,and time-multiplex to build a micro system.Micro_VGGNet lightweight model is designed and implemented.The test uses the MNIST handwritten digit data set as training and test samples.The microsystem can accurately recognize handwritten digits with an accuracy rate of98.1%.The volume is only30mm×30mm×1.2mm,and the image processing speed can reach20.65FPS at a working frequency of100MHz.The power consumption is only 2.1W.The multi-objective balance（performance,volume and power consumption）of lightweight neural network micro-system is realized.Key words：microsystem;System in Package（SIP）;Convolutional Neural Network（CNN）;digit recognition基金项目：国家自然科学基金重点项目（11835008）。
基于SIP协议和H.264编解码优化的IP可视电话设计摘要IP可视电话是一种实现点到点的视频通信的工具，它能利用互连网双向实时传输通话双方的图像和语音信号。
它集数字信号处理技术、宽带互联网技术、多媒体通信技术于一体，是下一代通信网的主要业务之一。
本项目还预留了良好的扩展性，如增加IPTV、录像、家庭多媒体网关等功能，真正成为一个智能终端。
本论文主要研究IP可视电话的关键技术，在TI 公司的DM642平台上实现H.264编解码的优化、SIP呼叫协议、IP可视电话硬件平台的开发等关键技术。
在分析H.264编解码算法的运动估计、整型变换、熵编码等关键算法特点的基础上，结合本系统的具体应用，提出了改进的算法并用软件实现。
在H.264优化部分主要的研究内容如下：1．研究了H.264编码运动估计算法，在运动估计搜索算法中比较了全搜索法、钻石搜索法和小菱形搜索算法的特点，提出了一种新的改进的小菱形搜索算法，结果表明，该算法复杂性较小、效率更高。
2．通过对H.264编码的整型变换的研究，结合DM642的并行数据处理特性，对原整型变换中的功能处理模块进行了调整，以充分发挥DSP海量数据处理的能力，并减少了程序中不必要的内存访问。
实践结果表明，改进后的算法的执行速度得到了很大的提高，而且减少了总的代码量。
3．分析了H.264编码的熵编码中自适应变长编码的算法，在查找模块的实现中，采用的基于分组的查表技术，提高了查表的效率,使熵编码的运算时间减小了大约三分之一。
SIP协议部分，在研究IETF RFC3261的国际标准--SIP协议栈的基础上，重点分析了开源的OSIP协议栈，并利用其开发出了SIP 的用户代理UA （User Agent），结合本系统的具体应用，简单、高效地实现了系统所需要的SIP呼叫功能。
为了验证本系统的功能和性能，建立了两个测试模型。
除了对SIP协议的实现、IP可视电话的功能进行了验证外，还对H.264编解码的运动估计、整型变换、熵编码等关键算法的优化前后的处理时间进行了的测试，对优化前后CPU的占有率、图像质量进行了比较验证。
Design of a SIP-based Real-time Visitor Communication and Door Control Architecture using a Home GatewayYeon-Joo Oh, Eui-Hyun Paik, and Kwang-Roh ParkAbstract— Typical video door phone systems that allow people inside the home to communicate with visitors at the door have notable shortcomings: the resident must be physically in the home and is not informed of any missed visits upon returning home. To overcome these limitations, we propose an architecture supporting user mobility, whereby the resident can monitor visitors at their front door using the communication-capable devices such as PCs, PDAs, and home servers with Internet connections, regardless of physical constraints. We implemented the proposed architecture based on the Session Initiation Protocol and a home gateway system connected to a conventional intercom or a video door phone1.Index Terms — home network, video door phone system, home gateway, digital home service.I.I NTRODUCTIONBroadband Internet capable home networks enable control of home appliances from remote sites via the Internet. For this purpose, the home network typically employs integrated control solutions that enable its user to manage home appliances not only from within the home with the help of a home server, home pads, wall pads, and PCs, but also from outside the home via mobile phones, office PCs, etc [1], [2].In this paper, we suggest an enhanced video door phone service architecture combining typical door phone services with the home network facility. Existing video door phone solutions can be classified into two categories. One is the traditional home-automation system which only provides a simple communication function between the door phone camera device at the door and an interphone device including video monitor functionality in the living room. The other is a recently introduced video door phone system in support of various home networking technologies [1]. In addition to the simple video-enabled interphone function, the video door phone system also provides the resident with communication to pre-registered locations such as the resident’s mobile phone or security office, when the resident is away from home. Though this type of service supports user mobility, the resident should pre-register the telephone number of his/her wireless communication devices or the security office prior to leaving his/her home.The limitations of conventional video door phone solutions can be summarized as follows: First, the resident can converse1Yeon-Joo Oh is with the Electronics and Telecommunications Research Institute, Korea (e-mail: yjoh@etri.re.kr)Eui-Hyun Paik is with the Electronics and Telecommunications Research Institute, Korea (e-mail: ehpaik@etri.re.kr)Kwang-Roh Park is with the Electronics and Telecommunications Research Institute, Korea (e-mail: krpark@etri.re.kr). with the visitor using only the video phone device in the living room, even though the resident already has home network-connected video facilities such as digital TVs, PCs, etc. Second, the pre-registered phone number cannot be modified dynamically from a remote location.In an effort to overcome these limitations, we propose the Real-time Visitor Communication Service (RVCS) architecture. With RVCS, which is based on the home gateway system and the Session Initiation Protocol (SIP) [4], [5], residents can converse with visitors at anytime regardless of their physical location [6]-[10]. When the resident is at home, a door bell ringing event invokes notification messages on communication-possible devices such as a video phone in the living room, a home server in the dining room, a PC in a study room, etc. According to user preferences, multimedia communication between the selected terminal device and the front door phone camera can be established. When the resident leaves the home, the proposed architecture connects the pre-registered terminal devices. The registration information of the terminal devices can be dynamically updated upon the user preferences. Thus, the resident may usea mobile phone while driving a car, and change the connectionto an office PC upon arriving at work. Therefore, the proposed RVCS architecture helps residents achieve user mobility and dynamically modify device information based on user-preferences at any place and time.II.R ELATED W ORKA.Personal mobility support based on SIPThe SIP is an Internet Engineering Task Force (IETF) standard protocol for initiating an interactive user session that involves multimedia elements such as video, voice, chatting, gaming, and virtual reality [6]-[10].The SIP builds upon the IP communications foundation by providing a standards-based approach to enabling IP communications with numerous devices and applications [11]-[13]. Similar to HTTP or SMTP, the SIP works in the application layer of the Open Systems Interconnection (OSI) reference model. The application layer is the level responsible for ensuring communication among various applications. Thus, the SIP can support establishment, modification, and termination of multimedia communication sessions or Internet telephone calls. The protocol can also invite participants to unicast or multicast sessions that do not necessarily involve the initiator [4], [7]. Because the SIP supports name mapping and redirection services, it makes it possible for users to initiate and receive communications and services from any location, and for networks to identify the users wherever they are.Original manuscript received October 14, 2005 0098 3063/06/$20.00 © 2006 IEEEFig. 1. The message flow of SIP forking proxy mechanismIn particular, SIP-based personal mobility (i.e., user mobility) allows us to address a single user located at different terminals with the same logical address [4], [8]-[10]. In this regard, 1-to-n (one address, many potential terminals) mappings are useful, as illustrated in Fig. 1. For example, the user may want to be reachable via a PC2, and PC3. He/she may use these devices either at the same time or alternate between them. Using a SIP forking proxy, the user can be reached at any of the devices at the same time, making their device choice transparent to others.B.Home GatewayThe ubiquity of broadband connectivity and the advancements in home networking technologies have introduce into the market a new breed of consumer premises equipment termed home gateway or residential gateway. Home gateway devices provide the consumer with benefits such as broadband Internet connection sharing, firewall security, VPN connectivity, IP telephony, audio/video streaming, wireless LAN connectivity, etc [1], [15], [16].At present, home gateways are available on the commercial market in various physical device personalities or form factors such as the SOHO home gateway, cable router/MTA home gateway, DSL router/IAD home gateway, STB home gateway, etc. Each of the home gateway device personalities is targeted for a particular segment and for a particular usage scenario of the end consumer.In this paper, we define the home gateway as a major device to support an enhanced video door phone service architecture combining typical video door phone services with a home network facility.III.R EALTIME V ISITOR C OMMUNICATION S ERVICEA.Overall ArchitectureFig. 2 shows the system architecture for a Real-time Visitor Communication Service. Proposed architecture mainly consists of devices as follows: an existing video door phone system, a home gateway (HG), user terminals such as PC, PDA, and home server connected to the Internet can view and converse with the visitor at the door.Fig. 2. System architecture for supporting a Real-time Visitor Communication Serviceponents of the proposed architectureThe architecture of the Real-time Visitor Communication Service consists of the following components: a Video Door Phone Server, which controls session establishment based on SIP protocol, a Door Phone Agent, and a User Terminal Agent. Fig. 3 shows these components, which are described in detail below.Fig. 3. Components for the Real-time Visitor Communication Service 1) Video Door Phone Server (VDPS): VDPS contains SIP Server modules such as a proxy, registrar, and location server, which provides services for call-forwarding, message multi-forking, user registration, user location, user preferences, and information management for the preference terminal. The messages exchanged between the Video Door Phone Server and either the Door Phone Agent or the User Terminal Agent are based on the SIP protocol [4].2) Door Phone Agent (DPA): DPA is comprised of the following modules: the Door Phone I/F Control, Audio/Video Processing, RTP/RTCP [16], [17], SIP protocol [4], [5], and the Door Phone Control Manager.Fig. 4. Message flow for the Real-time Visitor Communication Service using a home gatewayIt controls a legacy door phone device via the Door Phone I/F Control module, which detects the bell ringing signal and transforms the audio/video signal inputted from the video camera device into a digitized video signal, and sends the voice data received from the Audio/Video Processing module to the video camera device.It compresses a digitized video signal into an MPEG4-encoded stream, and compresses the digitized audio signal into a G.711 or G.723.1-encoded stream and vice versa. It also contains SIP UA functionality for SIP session control, and performs an RTP protocol stack for multimedia transmission. 3) User Terminal Agent (UTA): UTA is comprised of the following modules: the Visitor Communication Manager, Audio/Video Processing, RTP/RTCP for transmitting encoded video and audio data, SIP UA functionality for SIP-based session control, and User Interface Control for controlling events from the user.It notifies the resident of a door bell event received from the Door Phone Agent through the Visitor Communication Manager module. It also establishes or terminates a multimedia session with the Door Phone Agent by using SIP and RTP protocol [16], [17].C. Service Call FlowWe define the home gateway as a RVCS entity that controls both the Video Door Phone Server having the SIP server functionalities [4] and the Door Phone Agent including a SIP UserAgent (SIP UA) module [4]. As the DPA, the home gateway processes events for the door phone device and it is connected to the Internet.Thus, those in the home within the home gateway could communicate according to their preferences or via the closest terminal to the home gateway, anytime and anywhere. The preference terminals are devices that the resident has registered to the home gateway in order to converse with the visitor. They have a RVCS user application program (RVCSUA) having a GUI based on the User Terminal Agent, which communicates with the door phone camera device connected to the home gateway and performs functionalities that unlock the front door of the home. Fig. 4 shows the messages exchanged between the door phone system and a terminal selected by the resident, when a visitor rings the bell at the front door.1) Registration of the selected terminals: A resident can initiate a RVCS UA or other SIP phone applications [6] from inside or outside the home. When the RVCS UA starts, it automatically registers to the home gateway, which functions as the SIP registrar. At this time, the resident may want to be reachable via more than one device, and he/she can register all the devices manually with the “REGISTER” menu of the application.2) Event notification and conversation: When a visitor rings the bell at the door, the home gateway receives the bell signal and then sends a SIP INVITE message to the terminals that have been registered by the resident. The resident is notified of a door bell event from several terminals previously registered by the resident and clicks the “OK” button in the nearest selected terminal. Audio data is then exchanged between the resident’s terminal and the home gateway while video data is only transmitted via the home gateway to the resident’s terminal.3) Terminating the conversation: When the resident clicks the “CLOSE” button, the SIP BYE message is sent from the RVCS UA in the terminal to the home gateway. The home gateway sends a SIP OK message to the terminal. Finally, the multimedia session between the RVCS UA in the terminal and the DPA in the home gateway is released.4) Opening the Door by the user terminal: The resident confirms and converses with the visitor through the RVCS UA.When clicking the “DOOR OPEN” button to allow the visitor to enter the home, the resident must perform aprocedure to ascertain whether the resident is authorized to open the door. The resident enters a valid user ID and password. The RVCS UA encrypts the user information and sends the encrypted message to the Video Door Phone Server (VDP Server). After the resident’s credential is validated by the Video Door Phone Server, the resident can open the door by clicking the “DOOR OPEN” button through the RVCS UA in the terminal.IV. P ROTOTYPE I MPLEMENTATIONThe Real-time Visitor Communication Service architectureproposed in this paper was developed and adopted to a homegateway, a PC, and a PDA. Hardware and softwarespecifications of the devices are listed in Table 1.T ABLE IS PECIFICATIONS FOR TESTBEDH OME GATEWAY PC PDAFunctional Components VDP Server / DoorPhoneAgent UserTerminalAgent UserTerminalAgent Video codec MPEG4 Encoder(H/W) MPEG4Decoder (S/W)MPEG4 Decoder(S/W)Audio codecG.723.1 / G.711(H/W)G.711 (S/W)G.711 (S/W)We connected the physical interface of the traditional door phone camera device located at the door to the home gateway which controls the door phone system (i.e., front door camera and video phone monitor device) and transmits video and audio signal received from the door phone camera device to the user terminal, and vice versa.Fig. 5. GUI of the RVCS user application on a PDA device used as user’s preference terminal: (a) main screen, (b) when receiving the door bellevent from the Door Phone Agent in the home gateway, (c) whencommunicating with a visitor at the doorIn our architecture, the SIP is used as the signaling protocol for multimedia sessions and RTP for multimedia streaming between the user terminal and the home gateway device [1], [16], [17]. The analog video signal inputted from the doorphone camera device is converted into a digitized video signal and the digitized video signal is compressed into an MPEG4-encoded stream by the Door Phone Agent in the homegateway device. Fig. 5 shows the graphical user interface of the RVCS user application program in the PDA device that notifies the bell event to the user and displays the visitor’s video/voice data when the resident communicates the visitor.The performance of the home gateway device, operating as the SIP stateful proxy server forks and forwards the INVITE request to more than one location, depends on the number of the contact addresses as well as the implementation issue. And if the server could not complete forwarding the request to the multiple destinations within the limited time, it may affect the transaction state management of the VDA including SIP User Agent Client functionality as a logical entity creates a new request. Therefore, we have evaluated the performance of the home gateway.Fig. 6 shows the results for the performance of the homegateway system. The processing time including in forking andtransferring a request packet per each destination is increasedslightly, although the number of the contact addresses as thedelay factor regarding packet forwarding is increased linearly.Fig. 6. The processing time for parallel forking and transferring in HG regarding the number of contacted locationsV. C ONCLUSIONWe have proposed and implemented a real-time visitor communication service system whereby a home resident can confirm the identity of and converse with visitors regardless of time and physical constraints.The proposed architecture based on the SIP using a home gateway system helps residents achieve user mobility and dynamically modify device information based on user-preferences at any place and time. Also, the resident can monitor and converse with the visitor using the traditional SIP phone software such as linphone or kphone. In this paper, we defined a home gateway as a major device to support an enhanced video door phone service architecture combining typical video door phone services with a home network facility, and to develop and evaluate our proposed architecture. In our architecture, the home gateway performs as a controller controlling the traditional intercom or door phone devices as well as the functional entity such as Video Door Phone Server and Door Phone Agent.In our paper, we premised that a communication-possible device is manually determined and used by the user’s choice, when a door bell ringing event occurred. Therefore, we need to extend our architecture to include a mechanism forautomatically detecting the residents’ current position and communication-available devices in the home by using sensors based on RF or Bluetooth.R EFERENCES[1] F.T.H. den Hartog, M Balm, and C.M. de Jong, “Convergence of residential gateway technology,” IEEE Communications Magazine , vol. 42, no.5, pp. 138-143, May 2004. [2] P. M. Corcoran, “Mapping Home-Network Appliances to TCP/IP Sockets Using A Three-Tiered Home Gateway Architecture,” IEEE Trans. Consumer Electron., vol. 44, no. 3, pp. 729-736, Aug. 1998. [3]Seungho Baek, Hyunjeong Lee, Shinyoung Lim, and Jaedoo Huh, “Managing mechanism for service compatibility and interaction issues in context-aware ubiquitous home,” IEEE Trans. Consumer Electronics , vol. 51, no. 2, pp. 524 -528, May 2005. [4] H. Schulzrinne, "Personal mobility for multimedia services in the Internet," in European Workshop on Interactive Distributed Multimedia Systems and Services (IDMS), (Berlin, Germany), Mar. 1996. [5]Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, A., Peterson, J., Sparks, R., Handley, M. and E. Schooler, "SIP: Session Initiation Protocol", RFC 3261, Internet Engineering Task Force (IETF), June 2002. [6] A. Johnston, Steve Donovan, Robert Sparks, Chris Cunningham, and Kevin Summers, "SIP Basic Call Flow Examples," RFC 3665, Internet Engineering Task Force (IETF), Dec. 2003. [7] Schulzrinne, H., SIP Implementations: sip phones. Columbia University,U.S. [Online]. Available: / sip/implementations.html [8]Eunsook Kim, et al., "Performance Evaluation of an XML-Based Conference Control Protocol for Centralized VoIP Conference," ETRI Journal, vol.26, no.2, pp. 181-184, Apr. 2004. [9] K. Ei-Khatib, Zhen E. Zhang, N.H and G.B “Personal and service mobility in ubiquitous computing environments,” Wireless communications and mobile computing , vol. 4, pp.595-607, 2004. [10] H. Schulzrinne, and E. Wedlund, “Application-Layer Mobility Using SIP,” ACM SIGMOBILE Mobile Computing and Communications Review , vol. 4, no. 3, July 2000. [11] S. Tsang, S. Moyer, D. Marples, H. Schulzrinne and A. Roy Chowdhury, "Sip Extensions for Communicating with Networked Appliances", Internet Draft, Internet Engineering Task Force (IETF), Nov. 2000. [12]M. Rahman, C. Akinlar, and I. Kamel, "ON SECURED END-TO-END APPLIANCE CONTROL USING SIP," In Proceedings of the 5-t h IEEE International Workshop on Networked Appliances , pp.24-28. Oct. 2002. [13] M. Rahman, and P. Bhattacharya, “Remote Access And Networked Appliance Control Using Biometrics Features,” IEEE Trans. Consumer Electronics , vol. 49, no. 2, pp. 348-353, May 2003. [14] Rishi Arora, “Home Gateway Applications and Personalities,” /htinews/aug03/articles/wipro/arora.htm [15]Woo Yong Han, et al., “A Gateway and Framework for Telematics Systems Independent on Mobile Networks,” ETRI Journal , vol.27, no.1, pp.106-109, Feb. 2005.[16] Kwang-Roh Park, Yeun-Joo Oh, Kyung-Shik Lim, and Kyoung-RokCho, “A Dynamic Packet Recovery Mechanism for Realtime Service inMobile Computing Environments,” ETRI Journal , vol.25, no.5, pp.356-368, Oct. 2003. [17] H. Schulzninne, et al., “RTP: A Transport Protocol for Real-Time Applications,” RFC 3550, IETF, July 2003. Yeon-Joo Oh received a B.E. degree in Computer Science from Kyung-Sang National University, Korea in 1998 and a M.S degree in Computer Science from Kyungpook National University in 2001. She joined the Electronics and Telecommunications Research Institute (ETRI) in 2001. She is currently working in Home Network Technology at Electronics and Telecomm-unication Research Institute (ETRI), as a member of the research interests include the area of Voice over IP (VoIP), SIP protocol, multimedia communication, Home network technology, and Digital Home Services Framework technology. Eui-Hyun Paik received B.E, M.S, and Ph.D. degrees in Computer Science from SoongSil University, Seoul, Korea in 1984, 1987, and 1997, respectively. He joined the Electronics and Telecommunications Research Institute (ETRI) in 1987. He served as a principal member of the research staff in the network research center from that time until 2003. He is currently working in the field of Home Network Technology, as current research interests include home networking, networking protocols and management, context-aware middleware and computing, and intelligent agent technology. Kwang-Roh Park received B.E. and M.S. degrees in Electronics Engineering from Kyungpook National University, Daegu, Korea in 1982 and 1985, respectively, and his Ph.D. degree in Computer and Communication Engineering from Chungbuk National University, Chongju, Korea in 2002. He joined the Electronics and Telecommunications Research Institute in 1984 and has been engaged in projects involving gateway system as a project leader of the home network team. He is currently the director of the home network technology group. His research interests are home networks and WPAN technologies as well as ubiquitous computing and digitalized home multimedia services.。
