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Cell re-ordering method, cell processing method and device using said method and device

A processing device and reordering technology, applied in the field of communication, can solve the problems of high implementation cost, etc., and achieve the effect of saving resources and saving cell cache

Inactive Publication Date: 2006-11-08
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

Although the solution of reordering only relying on serial numbers can also solve this problem, the RCB occupied by the reordering process increases rapidly as the scale of the switching network expands, and the implementation cost is too high

Method used

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  • Cell re-ordering method, cell processing method and device using said method and device
  • Cell re-ordering method, cell processing method and device using said method and device

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Embodiment Construction

[0039] In the present invention, each exchanged cell is sequentially numbered according to its original sequence, that is, a time stamp and a sequence number stamp are inserted. The time stamp and sequence number stamp are exchanged to the destination port together with the cell payload as part of the cell header. The cells are sorted at the destination port, and the input processor will store the cells exchanged from different paths into the shared cell buffer (Cell Buffer) in the chip according to the order of arrival of the cells, but will not enter them temporarily. Queue, the information required for entering the queue is sent to the reordering module for sorting, and then sent to the queue manager (Queue Management) for queuing in order to output in order, that is, the reordering module only processes some information related to entering the queue caching and processing. In this way, there is no need to cache these unsorted cells in the input processor, which saves a lo...

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Abstract

The present invention provides cell resorting method and cell processing method and device utilizing said method. Said cell resorting method includes using sorting label generating module inserting time mark and serial number mark into cell, then transmitting cell from source port to target port; resorting module according to received cell carried time mark and serial number mark resorting cell enqueue information. The present invention required resorting cell cache RCB is very few, to solve problem in high-capacity multiple stage switched network expansibility design.

Description

technical field [0001] The invention relates to the communication field, and in particular to a cell reordering method, a cell processing method, and a cell processing device. Background technique [0002] The switch fabric is the core module in the router, which completes the exchange of packets or cells (cell definition: the data packet unit input into the switching network) between multiple ports, that is, switches the cells arriving at the input port to the corresponding output port. [0003] There are two types of switching networks: time-division switching and space-division switching. Typical examples of time-division switching networks are shared buffers and shared bus switching structures. Due to their poor scalability, they are generally used in small switching capacity devices. In the space division switching network, the typical multi-level switching network, such as CLOS structure, Banyan structure, Crossbar, etc., is commonly used in large-capacity equipment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/54H04L12/04
CPCH04L47/34H04L49/552H04L49/90H04L49/9094H04L47/10
Inventor 唐德智
Owner HUAWEI TECH CO LTD
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