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    • 85. 发明授权
    • Packet transfer system
    • 分组传送系统
    • US06792002B2
    • 2004-09-14
    • US09775130
    • 2001-02-01
    • Yasuo TezukaHideo AbeTetsuo YamaguchiTakeshi Harada
    • Yasuo TezukaHideo AbeTetsuo YamaguchiTakeshi Harada
    • H04L1256
    • H04Q11/0478H04L2012/5658
    • The present invention provides a packet transfer system for use in an ATM network, which can realize a high-speed packet transfer by implementing a packet transfer process by hardware and also can enhance the throughput of the packet transfer process implemented by software. This packet transfer system comprises a hardware processing portion, which a memory, a packet assembling portion for causing the memory to store a packet assembled from an ATM cell received from a main circuit or an expansion circuit, a higher layer processing portion for performing higher layer processing portion according to header information sent from the packet assembling portion, and a packet determining/transmitting portion for transmitting a packet, which is determined according to a result of the higher layer processing in the higher layer processing portion as required to undergo packet processing, to an expansion circuit and for transmitting a packet, which is determined according to the result of the higher layer processing as not required to undergo packet processing, in a form of an ATM cell to a main circuit. The packet transfer system may further comprises a software processing portion, which has a second memory, a cell assembling/disassembling portion for assembling the ATM cell received from the expansion circuit into a packet, for causing the second memory to store the assembled packet, for reading the packet stored in the second memory and for transmitting the read packet in the form of an ATM cell to the expansion circuit, a packet processing portion for performing packet processing on a packet, which is received in the second memory, by software.
    • 本发明提供一种在ATM网络中使用的分组传输系统,其可以通过硬件实现分组传送过程来实现高速分组传输,并且还可以增强由软件实现的分组传送过程的吞吐量。 该分组传送系统包括硬件处理部分,存储器,用于使存储器存储从从主电路或扩展电路接收的ATM信元组装的分组的分组组合部分,用于执行较高层的较高层处理部分 处理部分,根据从分组组合部分发送的报头信息,以及分组确定/发送部分,用于发送根据需要进行分组处理的上层处理部分中的较高层处理的结果确定的分组, 扩展电路,并且以ATM信元的形式向主电路发送根据不需要进行分组处理的较高层处理的结果确定的分组。 分组传送系统还可以包括软件处理部分,其具有第二存储器,用于将从扩展电路接收的ATM信元组装成分组的小区组合/分解部分,用于使第二存储器存储组装的分组,用于 读取存储在第二存储器中的分组,并将ATM信元形式的读分组发送到扩展电路;分组处理部分,用于通过软件对在第二存储器中接收到的分组执行分组处理。