Consumer Electronics Powerline Communication Alliance An Overview Michael Stelts, President Copyright ©2005, CEPCA

Consumer Electronics Powerline Communication Alliance An Overview Michael Stelts, President Copyright ©2005, CEPCA

October 7, 2005 International Membership ( 成员 ) 1) Analog Devices 2) Delta Electronics 3) Hitachi 4) Mitsubishi 5) MMC 6) Panasonic 7) Pioneer 8) Sanyo 9) Sony 10) ST&T 11) Toshiba 12) Yamaha Over $290B annual sales

October 7, 2005 CEPCA ( 组织架构 ) BoD ( 董事会 ) Michael Stelts, President & Chair Promotion WG ( 宣传推广工作组 ) James Williamson, Chair Technical WG ( 技术工作组 ) Akio Kurobe, Chair

October 7, 2005 H ｆ ｔ Mutual Interference PLC modems employing different modulation schemes can’t check each other, resulting in a crippling collision. [PLC 调解器使用不同的调制解调技术不能互相检测, 造成干扰碰撞。 ] Access In-Home1 In-Home2 What Problem is CEPCA Solving? ( 要解决的问题 ) H A AH HHH AAA

October 7, 2005 In-Home speedAccess status (4–28MHz)OffOn In phase7050 Out of phase6020 Access speedIn-Home status (3–13MHz)OffOn In phase300 Out of phase300.8 In-Home PLC Access CPE* Access Repeater *CPE = Customer Premise Equipment Same phase Cross phase Different Technologies Must Coexist ( 不同的技术必须共存 ) Measured Throughput (Mbps) In-Home PLC

October 7, 2005 One Powerline–Different Applications ( 各种应用 )

October 7, 2005 Different Applications–Different Technologies ( 不同应用需要不同技术 ) HomePlugDS2HD-PLCEasyplugRenesas Analog Devices  Hitachi  Mitsubishi  Panasonic  Pioneer  Sanyo  Sony  ST&T  YAMAHA 

October 7, 2005 ｆ ｔ CEPCA Defines Coexistence (CEPCA 制定共存标准 ) ｆ ｔ Mutual Interference Coexistence AH HHH AAA By pragmatically addressing the needs of all PLC applications, CEPCA is creating an impartial coexistence specification. ( 为所有 PLC 应用需要, CEPCA 制定一个公平的共存标准。 )

October 7, 2005 CEPCA Goals ( 目标 ) 1)Develop PLC coexistence standard ( 开发制定 PLC 共存标准 ) Oct. 6, 2005Initial specification approved Q4 2005Evaluation and field trials Q1 2006Publish final specification 2) Promote coexistence in EU, US & China ( 在美国, 欧共体, 中国等宣传推广 ) Actively recruit US, EU & Chinese companies ( 积极募招新成员 ) Participate in international standards ( 参与国际标准 ) 3) Encourage PLC deregulation in Japan ( 鼓励日本政府开放 PLC 管制 ) Government desires coexistence

October 7, 2005 CEPCA Goals are Unique ( 独特的目标 ) CEPCA is not a PLC technology ( CEPCA 本身不是一种 PLC 技术 ) Founders using four or more technologies ( 创建者使用四或更多种技术 ) Impartial forum lets technologies coexist & compete ( 公平的论坛让技术共存 & 竞争 ) CEPCA is a global effort ( CEPCA 是全球性的努力 ) Global companies  Worldwide solution Young organization recruiting US & EU members Limited Japanese BoD seats  balanced CEPCA leadership

October 7, 2005 Coexistence = Reliability ( 共存双赢 ) No coexistence = Product returns ( 没有共存 = 产品退货 ) Nearly all solutions use same spectrum CE and Power Utilities use same solutions CEPCA specification ensures coexistence (CEPCA 规格保证共存 ) Minimize CE product returns Reduce Power Utility service calls No single standard exists – Solution providers must demand coexistence ( 由于不是单一标准, 提供商必须要求共存 )

October 7, 2005 Planned Milestones ( 计划的时间表 ) 05Q305Q406Q106Q206Q306Q4 CEPCA Draft Spec. ( 标准草案 ) CEPCA coexistence added to chips CEPCA Final Spec. ( 标准批准 )

October 7, 2005 Why not just wait for a standard? ( 为何不待统一的标准 ?) It ’ s a long wait, >18 months … ( 这是漫长的等待 ) …and UWB is taking longer Solutions exist for products now ( 目前已有多种技术方案 ) Different applications have different optimal solutions Waiting makes coexistence more difficult For many companies, waiting is impractical CEPCA supports standards (CEPCA 支持标准 ) CEPCA is submitting proposals to IEEE, PLC-J Participation encourages cooperation via coexistence CEPCA consensus speeds the standardization process Rigorous review refines CEPCA proposals

October 7, 2005 CEPCA Standards Participation (CEPCA 参与标准 ) IEEE P1901ETSI PLTPLC-J Hitachi  Mitsubishi  Panasonic  Pioneer  Sony  Yamaha 

CEPCA Coexistence Ideas

October 7, 2005 ｆ ｔ CEPCA Solution has 3 Elements 1)Frequency Division Multiplexing (FDM) 2)Time Division Multiplexing (TDM) 3)Commonly-Distributed Coordination Function (CDCF) ｆ ｔ Mutual Interference Coexistence AH HHH AAA

October 7, 2005 Frequency Division Multiplexing (FDM) FDM gives each system exclusive use of a frequency band, making it possible for each system to guarantee QoS precisely. Existing PLC modems each use different frequency bands; therefore, dynamic FDM is required for efficient coexistence. time frequency Access In-Home1 Access In-Home1 time frequency In-Home2 In-Home1 In-Home2 In-Home1 Access In-Home1 OR

October 7, 2005 Time Division Multiplexing (TDM) In-Home PLC collides with every signal inside the LV transformer. This implies that a home system with QoS should transmit through access system openings, making TDM control complicated. But, best effort-type modems can work well with TDM. Therefore, an efficient TDM mechanism supporting both QoS and best-effort communication is required. time frequency In-Home1 In-Home2 collision with all access signals A A A A A A H

October 7, 2005 CDCF Data channel Commonly-Distributed Coordination Function CDCF is a simple coexistence protocol– As robust as the data channel Minimize impediment to data channel speed Simple and easily implemented frequency In-Band CDCF -reliable Out-of-Band CDCF -maintain data speed -simple to implement time CDCFCDCF

October 7, )FDM/TDM Hybrid Mechanism Flexible FDM is required for Access/In-Home coexistence QoS-oriented TDM is required for HD video Guarantees QoS and prevents collisions 2)Commonly-Distributed Coordination Function (CDCF) As robust as the content being transmitted Minimize impediment to data channel speed Easy to implement time frequency Access In-Home1 In-Home2 CDCF CDCFCDCF CEPCA Coexistence Summary

Consumer Electronics Powerline Communication Alliance Ensure the success of access and in-home BPL… Demand coexistence from your PLC supplier.