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公开(公告)号：US07573809B2
公开(公告)日：2009-08-11
申请号：US11016840
申请日：2004-12-21
申请人： Kevin S. Meagher , James Westdorp , Michael Vaughn
发明人： Kevin S. Meagher , James Westdorp , Michael Vaughn
CPC分类号： H04J3/1611 , H04J2203/006 , H04L2007/045
摘要： A semi-transparent time division multiplexer/demultiplexer that transmits low rate tributaries from one location to another using a high rate aggregate connection, while preserving substantially all of the TOH and payload for each tributary signal. Transparency of the tributary TOH is accomplished by interleaving both the TOH and the Payload of each tributary into the high rate aggregate signal. Some TOH bytes may be tunneled or re-mapped into unused/undefined TOH locations in the aggregate signal to allow transparency of the TOH without corrupting the aggregate. Errors may be handled by tunneling BIP bytes into unused/undefined aggregate locations and updating the tunneled bytes with error masks calculated at each network elements. Alternatively errors may be forwarded by using an error mask generated from the tributary BIP locations and inserting the mask into the associated aggregate BIP locations. The mask in the aggregate BIP is updated with error masks calculated at each network elements.
摘要翻译： 半透明时分多路复用器/解复用器，其使用高速率聚合连接将低速率支路从一个位置发送到另一个位置，同时保留每个支路信号的基本上所有的TOH和有效载荷。 支流TOH的透明度通过将每个支路的TOH和有效载荷两者交织到高速率聚合信号中来实现。 一些TOH字节可以被隧道化或重新映射到聚合信号中的未使用/未定义的TOH位置，以允许TOH的透明度而不破坏聚合。 可以通过将BIP字节隧穿到未使用/未定义的聚合位置并通过在每个网络元素处计算出的错误掩码来更新隧道字节来处理错误。 或者，可以通过使用从支路BIP位置生成的错误掩码并将掩模插入相关联的聚合BIP位置来转发错误。 通过在每个网络元素计算的错误掩码更新聚合BIP中的掩码。
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公开(公告)号：US06870860B1
公开(公告)日：2005-03-22
申请号：US09552109
申请日：2000-04-19
申请人： Kevin S. Meagher , Michael Vaughn , James Westdorp
发明人： Kevin S. Meagher , Michael Vaughn , James Westdorp
CPC分类号： H04J3/1611 , H04J2203/006 , H04L2007/045
摘要： A semi-transparent time division multiplexer/demultiplexer that transmits low rate tributaries from one location to another using a high rate aggregate connection, while preserving substantially all of the TOH and payload for each tributary signal. Transparency of the tributary TOH is accomplished by interleaving both the TOH and the Payload of each tributary into the high rate aggregate signal. Some TOH bytes may be tunneled or re-mapped into unused/undefined TOH locations in the aggregate signal to allow transparency of the TOH without corrupting the aggregate. Errors may be handled by tunneling BIP bytes into unused/undefined aggregate locations and updating the tunneled bytes with error masks calculated at each network elements. Alternatively errors may be forwarded by using an error mask generated from the tributary BIP locations and inserting the mask into the associated aggregate BIP locations. The mask in the aggregate BIP is updated with error masks calculated at each network elements. Re-timing of TOH to a synchronized clock in the tributary framer circuits can be accomplished using controlled slips of overhead frames, whereby an entire frame is dropped or added depending on the relationship of the received clock and the synchronized clock. DCC bytes may be re-timed by adding or deleting flag bytes occurring between respective DCC packets. Re-timing of the aggregate TOH to a transmit clock may be accomplished in a similar manner.
摘要翻译： 半透明时分多路复用器/解复用器，其使用高速率聚合连接将低速率支路从一个位置发送到另一个位置，同时保留每个支路信号的基本上所有的TOH和有效载荷。 支流TOH的透明度通过将每个支路的TOH和有效载荷两者交织到高速率聚合信号中来实现。 一些TOH字节可以被隧道化或重新映射到聚合信号中的未使用/未定义的TOH位置，以允许TOH的透明度而不破坏聚合。 可以通过将BIP字节隧穿到未使用/未定义的聚合位置并通过在每个网络元素处计算出的错误掩码来更新隧道字节来处理错误。 或者，可以通过使用从支路BIP位置生成的错误掩码并将掩模插入相关联的聚合BIP位置来转发错误。 通过在每个网络元素计算的错误掩码更新聚合BIP中的掩码。 支路成帧器电路中TOH到同步时钟的重新定时可以使用开销帧的受控滑动来实现，由此根据所接收的时钟和同步时钟的关系，整个帧被丢弃或相加。 可以通过添加或删除在相应DCC分组之间发生的标志字节来重新定时DCC字节。 聚合TOH到发送时钟的重新定时可以以类似的方式实现。
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公开(公告)号：US20050141569A1
公开(公告)日：2005-06-30
申请号：US11016840
申请日：2004-12-21
申请人： Kevin Meagher , James Westdorp , Michael Vaughn
发明人： Kevin Meagher , James Westdorp , Michael Vaughn
CPC分类号： H04J3/1611 , H04J2203/006 , H04L2007/045
摘要： A semi-transparent time division multiplexer/demultiplexer that transmits low rate tributaries from one location to another using a high rate aggregate connection, while preserving substantially all of the TOH and payload for each tributary signal. Transparency of the tributary TOH is accomplished by interleaving both the TOH and the Payload of each tributary into the high rate aggregate signal. Some TOH bytes may be tunneled or re-mapped into unused/undefined TOH locations in the aggregate signal to allow transparency of the TOH without corrupting the aggregate. Errors may be handled by tunneling BIP bytes into unused/undefined aggregate locations and updating the tunneled bytes with error masks calculated at each network elements. Alternatively errors may be forwarded by using an error mask generated from the tributary BIP locations and inserting the mask into the associated aggregate BIP locations. The mask in the aggregate BIP is updated with error masks calculated at each network elements. Re-timing of TOH to a synchronized clock in the tributary framer circuits can be accomplished using controlled slips of overhead frames, whereby an entire frame is dropped or added depending on the relationship of the received clock and the synchronized clock. DCC bytes may be re-timed by adding or deleting flag bytes occurring between respective DCC packets. Re-timing of the aggregate TOH to a transmit clock may be accomplished in a similar manner.
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