Apparatus for realizing asynchronous transmission mode adaption layer function
A technology of asynchronous transmission mode and adaptation layer, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of consuming dynamic memory space, low data processing capacity, large CPU resources, etc., to save dynamic memory space, The effect of high data processing speed and effective CPU resources
Inactive Publication Date: 2010-02-17
BEIJING ZHONGCHUANG TELECOM TEST
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[0008] The purpose of the present invention is to provide a kind of device that realizes the function of asynchronous transfer mode adaptation layer, to overcome the defects of low data processing capacity, poor real-time performance, consumption of a large amount of CPU resources and consumption of a large amount of dynamic memory space in the prior art
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[0057] A specific example of the present invention is Figure 1b As shown, assume that the large-capacity content search memory is a content search memory with a capacity of 1,000 identifications, and there are 1,000 user services running at the same time, and each data source on the line is searched in groups. Such a search task only costs 1 Find the cycle to get the result.
[0058] Below we will describe in detail the best implementation of the present invention with reference to the accompanying drawings. First of all, it should be pointed out that the meanings of the terms, words and claims used in the present invention should not be limited to their literal and ordinary meanings, but also include meanings and concepts that are consistent with the technology of the present invention. This is because It is up to us, as inventors, to define terms appropriately in order to best describe our inventions. Therefore, the configurations given in this specification and the accom...
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The device includes first programmable logic unit, second programmable logic unit, first memory cell of zero bus transfer time, second memory cell of zero bus transfer time, and third memory cell of zero bus transfer time, memory cell for searching content, and asynchronous inner memory cell with dual channel. The invention uses three combined parts: programmable chip as kernel control chip, high-speed memory cell as assistant data buffer, and implementing quick searching packet of multilink (user) data by using memory cell for searching content in large capacity to realize function of adaptation layer in asynchronous transmission mode by using digital integrated circuit in larger scale. The invention supports both AAL-2 and AAL-5 blended data.
Description
technical field [0001] The invention relates to the field of realizing the function of an asynchronous transmission mode adaptation layer, in particular to a device for realizing the function of an asynchronous transmission mode adaptation layer by using a programmable device and a high-speed memory. Background technique [0002] In the late 1970s, the digitization of transmission and exchange, that is, IDN (Integrated Digital Network, Integrated Digital Network), was realized. In order to improve the utilization rate of network resources and facilitate users, ISDN (Integrated Services Digital Network, integrated service digital network) was proposed. Network) technology, from the user's point of view, this technology makes voice and data or image services as if they are on the same network. In order to meet the above requirements, it is necessary to realize the integration of terminal, transmission and switching. Therefore, the International Telegraph and Telephone Advisory...
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IPC IPC(8): H04L12/56H04L29/08H04L47/43
Inventor 贾林张海东孙广彬刘洋黄海长王屹
Owner BEIJING ZHONGCHUANG TELECOM TEST