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    • 5. 发明申请
    • METHOD AND APPARATUS FOR THE HARDWARE IMPLEMENTATION OF VIRTUAL CONCATENATION AND LINK CAPACITY ADJUSTMENT OVER SONET/SDH FRAMES
    • 硬件实现硬件实现的方法和装置和SO​​NET / SDH框架的链路容量调整
    • WO2004062201A1
    • 2004-07-22
    • PCT/US2003/039892
    • 2003-12-16
    • TRANSWITCH CORPORATION
    • CHONAN, Harpreet, S.ROUAUD, Christophe
    • H04L12/28
    • H04J3/04H04J3/1617H04J2203/0069H04J2203/0094Y10S370/907
    • Methods and apparatus for the hardware implementation of virtual concatenation and link capacity adjustment over SONET/SDH frames include providing a state machine on chip with a SONET/SDH mapper and providing means whereby a plurality of members of a VCG can share the same state machine. The apparatus of the invention preferably includes a time wheel for granting access to the single state machine and memory for storing state information for each of the VCG members. According to the presently preferred embodiment, the invention is implemented on chip with an OC-3 Ethernet mapper. Up to eighty-four VCG members share the same state machine and memory is provided on the chip for maintaining the state information for eighty-four VCG members. Fifteen bits are used to store the state information for each VCG member in low order and seventeen bits are used to store the state information for each VCG member in high order.
    • 用于通过SONET / SDH帧进行虚级联和链路容量调整的硬件实现的方法和装置包括:使用SONET / SDH映射器提供芯片上的状态机,并提供由VCG的多个成员共享相同状态机的装置。 本发明的装置优选地包括用于准许访问单个状态机的时间轮和用于存储每个VCG成员的状态信息的存储器。 根据当前优选的实施例,本发明使用OC-3以太网映射器在芯片上实现。 多达八十四个VCG成员共享相同的状态机,芯片上提供了内存,用于维护八十四个VCG成员的状态信息。 十五位用于以低位存储每个VCG成员的状态信息,十七位用于以高阶存储每个VCG成员的状态信息。
    • 8. 发明申请
    • METHOD FOR SUPPORTING SDH/SONET APS ON ETHERNET
    • 支持以太网上的SDH / SONET APS的方法
    • WO2003021858A1
    • 2003-03-13
    • PCT/US2002/028112
    • 2002-09-04
    • GONDA, Rumi, Sheryar
    • GONDA, Rumi, Sheryar
    • H04L1/22
    • H04L45/28H04J3/14H04J2203/006H04L1/22H04L12/413H04L12/4625H04L45/22Y10S370/907
    • An Ethernet MAC APS Control sublayer (305) is provided for supporting SDH/SONET APS standard functionality in Ethernet Networks. In accordance with one embodiment, an Ethernet MAC APS Control sublayer (305) is provided for processing Ethernet MAC APS Control frames (301B). The MAC APS Control sublayer (305) provides support for a MAC Client APS Controller to implement all of the SDH/SONET APS standard functionality. The MAC APS Control frame (301B) provides support for SDH/SONET K1/K2 APS signaling protocol on Ethernet networks. The near end APS Controller can use the MAC APS Control frames to communicate with the far end APS controller during switchover and other APS operational requests. The far end APS controller, in turn, can use the MAC APS Control frames (301B) to communicate with the near end APS controller for switchover and other APS operational requests.
    • 以太网MAC APS控制子层(305)被提供用于支持以太网中的SDH / SONET APS标准功能。 根据一个实施例,提供以太网MAC APS控制子层(305)用于处理以太网MAC APS控制帧(301B)。 MAC APS控制子层(305)为MAC客户端APS控制器提供支持以实现所有SDH / SONET APS标准功能。 MAC APS控制帧(301B)支持以太网上的SDH / SONET K1 / K2 APS信令协议。 近端APS控制器可以在切换和其他APS操作请求期间使用MAC APS控制帧与远端APS控制器进行通信。 远端APS控制器又可以使用MAC APS控制帧(301B)与近端APS控制器通信进行切换和其他APS操作请求。