JPH09266479A - Information storage device for communication, and processing method for communication information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the use efficiency of the storage capacity of the information storage device for communication and the efficiency of access to the information storage device for communication. SOLUTION: In addition to a cell information storage means 13 which holds cell information needed to process cells of communication information and a cell processing means 12 which processes the cells by using the cell information, this device is provided with a cell kind discriminating means 11 which discriminates information regarding the kind of an inputted cell, and only cell information stored and held in a storage area containing cell information needed to process the cell is selectively read out of the cell information storage means 13 and written according to the kind of the cell discriminated by the cell kind discriminating means 11, so that a cell processing means 12 processes the cell. Therefore, the frequency of access to the cell information storage means 13 can be reduced and the use efficiency of the storage capacity of the cell information storage means 13 can be imprd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication information storage device and a communication information processing method, and more particularly to an ATM (Asyn).
The present invention relates to an information storage device and a method of processing stored information in an ATM switching device such as a Chronous Transfer Mode (Transmission) device.

[0002]

2. Description of the Related Art ATM (As) is used as a switching system that enables high-speed and large-capacity communication in a data communication network.
(ynchronous Transfer Mode)
There is a switch node for transmitting ATM cells,
Communication processing of cells of various communication information is performed according to the provisions of the communication protocol. For example, OAM (O
peration, Administration a
nd Maintenance) cell or VC (Vir)
dual channel) or VP (Virtual)
RM that performs resource management such as flow rate management of Path)
The use of a route of a cell such as a (Resource Management) cell requires information different from the information required for processing a normal cell, and further, the QOS (Quality of cell) of the cell defined by the communication protocol.
The information required for processing also differs depending on the service; service quality (quality class). The information for performing the cell processing of these various types of communication information is held in the storage device for each VC or VP, for example.

FIG. 6 is an explanatory view schematically showing allocation of storage areas of a cell information storage means in a conventional communication information storage device and communication information processing method.

In the conventional communication information storage device and communication information processing method, such information does not depend on the cell type of the communication information, for example, the cell type according to the information such as the service quality of the cell, the payload, and the route. A fixed area in the cell information storage means is allocated and stored for each information element. That is, common cell information 60 required for processing all cells, cell type 1 information 61 for each cell type,
Cell type 2 information 62, cell type 3 information 63, cell type 4 information 64 ,. . . As in the cell type N information 65, a fixed storage area is sequentially allocated and stored for each element of information regardless of the cell type. In such a mode of allocating storage areas that does not depend on the type of cell, as shown in FIG. 6, allocation is performed so that the storage areas are used as efficiently as possible.

FIG. 7 is a block diagram of a communication information storage device used in a conventional communication information processing method.

The outline of the configuration of the conventional communication information storage device 70 is as follows: cell information storage means 73 for storing cell information, and a cell information read command to the cell information storage means 73 in response to input of an input cell 74. To read the cell information (cell information read command 76, cell information 77), process the input cell 74 using this cell information 77, and output cell 75
And the cell processing means 72 for outputting as.

A typical example of the cell information storage means 73 is shown in FIG. 6, and accordingly, the cell information storage means 7 is shown.
When using the information stored in No. 3, all cell information is read and used regardless of the cell type.

[0008]

However, the above-mentioned conventional communication information storage device and communication information processing method have the following problems.

That is, according to the configuration of the cell information storage means or the cell processing method which does not depend on the cell type of the communication information, the cell information storage means stores the cell information even if the cell information is not used for processing the cell to be processed in the communication information storage device. Therefore, the storage area in the cell information storage means is used up to an originally unnecessary area in accordance with this, and redundant access time is consumed when reading information into the cell processing means. Becomes

Even for cells having the same VC or VP, the information required for processing differs depending on the cell type, but the same storage area is always stored regardless of the cell type. Reading the stored information unnecessarily wastes the opportunity and time to access the cell information storage means.

Further, the conventional cell information storage means has the following disadvantages when the information to be stored must be added.

FIG. 8 is an explanatory view schematically showing allocation of storage areas when additional information is stored in the storage areas of the cell information storage means in the conventional communication information storage device and communication information processing method. is there.

For example, the storage area 80 of the cell information storage means
Consider the case where the additional information 81 needs to be stored in the case where the width of is composed of 32 bits convenient for access or the like. In the conventional configuration of the cell information storage means, the number of accesses is 3 because the storage area is allocated as efficiently as possible.
In the case where the cell information storage area is limited to only three times and there is already no room to add additional information to the cell information, and the cell information storage area is configured by three stages, the configuration of the cell storage area in three stages is not changed. In order to add the additional information 81, the additional information 80 must be divided into additional information 82, 83, and 84 and added to each stage. As a result, the width of the storage area becomes, for example, 34 bits, which causes inconvenience such as reduction in access efficiency.

The present invention has been made in view of the above problems, and an object thereof is to improve the utilization efficiency of the storage capacity of the communication information storage device and the access efficiency to the communication information storage device. And a method of processing communication information.

[0015]

According to the communication information storage device of the present invention, the input cell is input based on the cell identification information of the type of the input cell included in the input cell in response to the input of the input cell of the communication information. Cell type identifying means for identifying the type of the cell, and a plurality of types of cell information used to process a plurality of types of cells of the communication information are stored and held in each of a plurality of divided storage areas for each or a plurality of types of cells. Based on the identification information, the cell information storage means for selectively reading out only the cell information stored and held in the storage area including the predetermined cell information necessary for processing the input cell among the plurality of types of cell information, and the predetermined cell information, It is characterized by comprising a cell processing means for performing communication processing of an input cell using, and outputting as an output cell, and providing a cell type identification means for identifying information about the type of the input cell, In accordance with the type of the cell identified by the cell type identification means, only the cell information stored and held in the storage area including the cell information necessary for processing the cell is selectively read from and written to the cell information storage means, Since the cell processing is performed, it is possible to reduce the number of times of access to the cell information storage means and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means. .

Cell type identification means for identifying the type of the input cell based on the cell identification information of the type of the input cell included in the input cell in response to the input of the input cell of the communication information, A plurality of types of cell information used for processing are stored and held for each one or a plurality of types in a plurality of divided storage areas, and input as a part of the plurality of types of cell information read according to the cell identification information of the input cell. Based on the cell identification information of the cell, a cell information storage means for selectively reading only cell information stored and held in a storage area including predetermined cell information necessary for processing an input cell among a plurality of types of cell information, Cell type identification for identifying information about the type of the input cell, characterized by comprising a cell processing means for performing communication processing of the input cell using the predetermined cell information and outputting as an output cell. Means, and based on the cell identification information of the input cell and a part of the plurality of types of cell information read according to the cell identification information identified by the cell type identification means, a cell required for processing the cell Since only the cell information stored and held in the storage area containing information is selectively read from and written to the cell information storage means to process the cell, the number of accesses to the cell information storage means is reduced. The access efficiency can be improved, and the storage capacity utilization efficiency of the cell information storage means can be improved.

The cell type identification means generates selection information for selecting predetermined cell information necessary for processing the input cell among a plurality of types of cell information according to the type of the identified input cell, and the cell information storage means outputs the selection information. Since only the cell information stored and held in the storage area including the predetermined cell information according to the selection information based on the cell identification information is selectively read out, the cell type identification means determines the type of the cell identified. By selectively reading and writing only the cell information stored and held in the storage area including the cell information necessary for the processing of the cell from the cell information storage means, and processing the cell, the cell information storage means is stored. It is possible to improve the access efficiency by reducing the number of times of access, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

The cell processing means selectively writes the cell information that needs to be written back to the storage area of the cell information storage means among the cell information that has been selectively read out according to the communication processing performed on the input cell. Since the number of accesses to the cell information storage means is reduced, it is possible to improve the access efficiency and the utilization efficiency of the storage capacity of the cell information storage means, and further, to efficiently manage the statistical information and the like. It can be carried out.

The plurality of types of cell information stored and held in the cell information storage means are classified and stored according to the type of cell information corresponding to the cell type. By selectively reading and writing only the cell information necessary for the processing of the cell according to the type of the stored cell from the cell information storage means and performing the processing of the cell, the number of times of access to the cell information storage means can be determined. It is possible to reduce the efficiency and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

Since the cell information is stored and held in the storage area of the cell information storage means divided for each row, it is classified according to the type of cell information, and thus the cell identified by the cell type identification means. By selectively reading and writing only the cell information necessary for processing the cell according to the type of the cell from the cell information storage means, and processing the cell, the number of accesses to the cell information storage means can be reduced. The access efficiency can be improved, and the storage capacity utilization efficiency of the cell information storage means can be improved.

Since the cell information is stored and held in the storage area of the cell information storage means divided into columns, the cell information is classified and stored according to the type of cell information. By selectively reading and writing only the cell information necessary for processing the cell according to the type of the cell from the cell information storage means, and processing the cell, the number of accesses to the cell information storage means can be reduced. The access efficiency can be improved, and the storage capacity utilization efficiency of the cell information storage means can be improved.

Further, the cell information discriminating means for discriminating the plural kinds of cell information based on the word information given to the plural kinds of cell information respectively is provided, so that the cells discriminated by the cell kind discriminating means are Depending on the type, only the cell information necessary for processing the cell is selectively read from and written to the cell information storage means, and the cell is processed to reduce the number of accesses to the cell information storage means and access the cell information storage means. The efficiency of the storage capacity of the cell information storage means can be improved, and the utilization efficiency of the storage capacity of the cell information storage means can be improved.

It is preferable that the cell identification information is information about a cell route in the communication protocol.

The cell identification information is preferably information on the quality of service of the cell in the communication protocol.

According to the communication information processing method of the present invention, a cell for identifying the type of the input cell based on the cell identification information about the type of the input cell included in the input cell in response to the input of the input cell of the communication information. From the cell information storage means in which a plurality of types of cell information used for processing a plurality of types of cells of communication information and a plurality of types of cells of communication information are divided and stored in one or more storage areas Based on the identification information, a predetermined cell information reading process of selectively reading out only the cell information stored and held in the storage area including the predetermined cell information necessary for processing the input cell among the plurality of types of cell information, and the predetermined cell information Communication processing of the input cell using
A cell processing step of outputting as an output cell, identifying information about the type of the input cell, and including cell information necessary for processing the cell according to the identified cell type. Since only the cell information stored and held in the storage area is selectively read and written from the cell information storage means to process the cell concerned, the number of times of access to the cell information storage means is reduced and the access efficiency is improved. And the utilization efficiency of the storage capacity of the cell information storage means can be improved.

A cell type identification process of identifying the type of the input cell based on the cell identification information about the type of the input cell included in the input cell according to the input of the input cell of the communication information, and A plurality of types of cells read according to the cell identification information of the input cell from the cell information storage means in which a plurality of types of cell information used for processing are divided and stored in a plurality of storage areas Based on a part of the information and the cell identification information of the input cell, a predetermined reading out selectively only the cell information stored and held in the storage area including the predetermined cell information necessary for the processing of the input cell among a plurality of types of cell information The cell information reading process and the cell processing process of performing communication processing of the input cell using the predetermined cell information and outputting the cell as an output cell are performed. Information is identified, based on the cell identification information of the input cell and a part of the plurality of types of cell information read according to the cell identification information identified by the cell type identification means, necessary for processing the cell. Only the cell information stored and held in the storage area including the cell information is selectively read and written from the cell information storage means to process the cell, so the number of accesses to the cell information storage means is reduced. It is possible to improve the access efficiency and improve the utilization efficiency of the storage capacity of the cell information storage means.

The cell type identification step includes a selection information generation step of generating selection information for selecting predetermined cell information necessary for processing an input cell among a plurality of types of cell information according to the type of the identified input cell, Since the predetermined cell information reading process is a process of selectively reading only the cell information stored and held in the storage area including the predetermined cell information in accordance with the selection information based on the cell identification information, the cell type identification means Only the cell information stored and held in the storage area including the cell information necessary for the processing of the identified cell is selectively read from and written to the cell information storage means according to the type of the identified cell, and the processing of the cell is performed. As a result, the number of accesses to the cell information storage means can be reduced to improve the access efficiency, and the utilization efficiency of the storage capacity of the cell information storage means can be improved. Can.

Further, in accordance with the communication processing performed on the input cell in the cell processing process, the cell information that needs to be written back to the storage area of the cell information storage means is selectively selected from the selectively read cell information. Since the cell information write-back process for writing back is provided, it is possible to reduce the number of accesses to the cell information storage means and improve the access efficiency and the utilization efficiency of the storage capacity of the cell information storage means. It is possible to efficiently manage statistical information and the like.

Since the plurality of types of cell information stored and held in the cell information storage means are classified and stored according to the type of cell information corresponding to the cell type, they are identified by the cell type identification means. By selectively reading and writing only the cell information necessary for the processing of the cell according to the type of the stored cell from the cell information storage means and performing the processing of the cell, the number of times of access to the cell information storage means can be determined. It is possible to reduce the efficiency and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

Since the cell information is stored and held in the storage area of the cell information storage means divided in units of rows, the cells are classified and stored according to the type of cell information. By selectively reading and writing only the cell information necessary for processing the cell according to the type of the cell from the cell information storage means, and processing the cell, the number of accesses to the cell information storage means can be reduced. The access efficiency can be improved, and the storage capacity utilization efficiency of the cell information storage means can be improved.

Since the cell information is stored and held in the storage area of the cell information storage means divided into columns, the cell information is classified and stored according to the type of cell information. By selectively reading and writing only the cell information necessary for processing the cell according to the type of the cell from the cell information storage means, and processing the cell, the number of accesses to the cell information storage means can be reduced. The access efficiency can be improved, and the storage capacity utilization efficiency of the cell information storage means can be improved.

Since the plurality of types of cell information can be identified based on the word information given to each of the plurality of types of cell information, the relevant cell is identified according to the type of the cell identified by the cell type identification means. By selectively reading and writing only the cell information necessary for the processing of the cell information storage means, and processing the cell concerned, the number of times of access to the cell information storage means can be reduced and the access efficiency can be improved. In addition, the utilization efficiency of the storage capacity of the cell information storage means can be improved.

The cell identification information is preferably information on a cell path in the communication protocol.

The cell identification information is preferably information about the service quality of the cell in the communication protocol.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a communication information storage device and a communication information processing method according to the present invention will be described below with reference to the drawings.

The communication information storage device according to the present invention is characterized by a cell information storage means for holding cell information necessary for processing a cell of communication information, and a cell processing means for processing a cell using the cell information. In addition, a cell type identification means for identifying information about the type of the input cell is provided, and cell information necessary for processing the cell is stored in accordance with the type of the cell identified by the cell type identification means. This means that it can be selectively used from the means. That is, the cell processing means in the communication information storage device according to the present invention, only the cell information of the storage area including the information necessary for processing the cell according to the cell type identified by the cell type identifying means is the cell information. The cell can be processed by selectively reading from and writing to the storage means.

Therefore, it is possible to reduce the number of accesses to the cell information storage means and to improve the utilization efficiency of the storage capacity of the cell information storage means.

FIG. 1 is a block diagram of an embodiment of a communication information storage device according to the present invention. The communication information storage device 10 is means for performing processing relating to a cell for communication of the communication information cell, and has a specific configuration as follows. Cell identification information about the cell type of the input cell 14 is identified according to the input of the input cell 14, and the type of information necessary for processing the cell is selected for each cell type according to the identified cell type. Cell type identification means 11 for generating selection information 16 and cell information necessary for processing cells are stored,
The cell information storage means 1 from which the selected cell information 17 is read according to the selection information 16 from the cell type identification means 11
3 and the cell information 17 selectively read from the cell information storage means 13 to perform communication processing of the input cell 14,
The communication information storage device 10 according to the present invention is constituted by the cell processing means for outputting as the output cell 15.

The cell type identifying means 11 identifies the cell type of the input cell 14 according to the type of the input cell 14, for example, the service quality of the cell, the payload, the route, etc., according to the input of the input cell 14, and the input cell 14 The selection information 16 for selecting the type of cell information necessary for the processing of is generated and output to the cell information storage means 13. The cell information 17 selected according to the selection information 16 is read from the cell information storage unit 13 to which the selection information 16 is input, and the cell information 1
7 is output to and written in the cell processing means 12. Alternatively, in the cell type identification means 11, the input cell 1
Corresponding to the first selection information 16 generated according to the type of No. 4, the minimum necessary cell information 17 is read from the cell information storage unit 13 and written in the cell processing unit 12 and fed back to the cell type identifying unit 11. Then, the cell type identification means 11 determines whether or not additional cell information is necessary based on the minimum required cell information 17 and the type of the input cell 14, and if necessary, the additional cell information is determined. The second selection information 16 for selection is generated, the additional cell information necessary for processing the input cell 14 is read from the cell information storage means 13, and the necessary additional cell information 17 is read out.
May be output to and written in. The cell processing unit 12 selectively reads and writes the cell information 1
7 is used to perform communication processing of the input cell 14 and output as the output cell 15. Further, the cell processing means 12
After processing the input cell 14, it is assumed that among the cell information selectively read, the cell information that needs to be written back to the storage area of the cell information storage unit 13 is selectively written back. good. For example, selective write-back is performed for cell information for which it is necessary to write back statistical information regarding the flow rate management of cells, the frequency of connection / disconnection of information paths, and the like. Thereby, it is possible to efficiently manage the statistical information and the like.

When the cell information storage means 13 is an external storage device, as described above, by selectively reading and writing information necessary for each cell type from the cell information storage means, the external storage device can be used. It is possible to improve the efficiency of access to a certain cell information storage means.

Further, by using the cell information storage means 13 to store only the information necessary for processing the cells expected to be input to the communication information storage device 10, the utilization efficiency of the storage capacity of the cell information storage means 13 is improved. Can be improved.

FIG. 2 shows a cell information storage means in the embodiment of the communication information storage device and the communication information processing method according to the present invention when the information used for the processing of the cell differs depending on the cell type of the communication information. It is explanatory drawing which showed the allocation of a memory area typically.

The cell information necessary for processing the cell of the communication information includes the common cell information 20 necessary for processing all cells, the unique information necessary for the processing for each cell type, or the special cell. Cell type 1 information 21 and cell type 2 information 2 which are unique information necessary for processing even though they are in the category of cells
2 ,. . . , And the cell type N information 23 are separately allocated and storage areas are stored and held. The storage area is divided and allocated by dividing the storage area in units of rows (rows) or in units of columns (columns) so that the cell information can be selectively read out easily. Information is stored and held separately for each type of cell information.

When the information used for cell processing differs depending on the cell type of the communication information, as shown in FIG. 2, common cell information 20, cell type 1 information 21, cell type 2
Information 22 ,. . . , The cell type N information 23 is separately allocated to a storage area, and when the cell is processed, only the information necessary for the processing of the cell is selectively read and written and used to access the cell information storage means. The efficiency of the storage capacity and the utilization efficiency of the storage capacity can be improved.

When a plurality of pieces of cell information that are always used at the same time fit in a storage area that can be read in one word, a storage area is allocated and stored for each piece of cell information that is used at the same time. The efficiency of access to the storage means and the utilization efficiency of the storage capacity can be improved. If a plurality of pieces of cell information that are not used at the same time fit in a storage area that can be read in one word, a plurality of pieces of cell information that can be stored in the storage area may be stored and held together.

Therefore, in any of the above cases,
When the cell information of each storage area is read out except the storage area where only the cell information that is not used for the processing of the input cell is stored, and when the utilization efficiency of the storage capacity is prioritized, the processing of the input cell is performed. Although the unused cell information may be read together with the used cell information, the number of words for reading the cell information of the necessary storage area can always be minimized.

More specific allocation of the storage area of the cell information storage means will be described below.

FIG. 3 shows the RM in the embodiment of the communication information storage device and the communication information processing method according to the present invention.
It is an explanatory view showing typically allocation of the storage area of the cell information storage means according to the type of (Resource Management) cell.

In allocating the storage area of the cell information storage means according to the type of RM cell shown in FIG. 3, common cell information 30 required for processing all cells and Loo
Loop Back used only for processing pBack cells
Information 31 and BEC used only for processing BECN cells
The storage area is divided and allocated to the N information 32.

A method of selectively using stored information according to the type of RM cell will be described. Lo is the type of RM cell.
op Back cell and BECN (Backward E
xplicit Congestion Notify
cell), a Loop Back cell occurs only during multicast, and a BECN cell occurs only during unicast. That is, Loop Bac
The k cell and the BECN cell are the same VC (Virtual Channel) or VP of the same switch node.
In (Virtual Path), they do not occur simultaneously. Therefore, the information for Loop Back used for processing the Loop Back cell and the information for BECN used for processing the BECN cell are not used at the same time, and when processing the RM cell, the Loop B
Either the ack information or the BECN information is selectively used.

For example, when the information necessary for processing the cells of the communication information is stored and held in the external storage device, as shown in FIG. 3, the information necessary for processing the cells is common to the processing of all cells. Required common cell information 30 and Lo
Loop Ba used only for processing the Op Back cell
ck information 31 and B used only for processing a BECN cell
It is classified into the ECN information 32 and stored and retained.
By classifying such information by a word and inputting a word including necessary information, the information necessary for processing a cell can be selectively read from the external storage device with a minimum access.

As for the information held in the external storage device, if the word of unnecessary cell information is deleted in advance, the storage area of the external storage device can be used efficiently. For example, QO of communication information in ATM communication
As will be described later, there are an ABR class and a class other than the ABR class in S (Quality of Service), and the ABR class requires processing of the RM cell, while the ABR class requires processing. The RM cell processing is not required in other classes. Therefore, by deleting beforehand the word of the cell information necessary for the processing of the RM cell from the table of the storage area of the communication information storage device arranged in the line that does not handle the communication information of the ABR class. The storage area can be used without waste.

FIG. 4 shows the QOS in the embodiment of the communication information storage device and the communication information processing method according to the present invention.
FIG. 3 is an explanatory diagram schematically showing allocation of storage areas of cell information storage means according to types.

In allocating the storage area of the cell information storage means according to the type of QOS shown in FIG. 4, the common cell information 40 required in common for the processing of all communication information cells is used.
And the AB required only for processing ABR class cells
The storage area is divided and allocated to the R information.

Classified memory retention and selective use of memory information is also effective for QOS. Although the types of QOS are classified into ABR class and classes other than ABR class, the information for managing the flow rate by the RM cell is required in the ABR class, while the RM cell is used in the classes other than the ABR class. Since there is no such processing, information related to the processing of the RM cell is unnecessary. Therefore, as shown in FIG. 4, the information necessary for processing the cells of the communication information is set to the common cell information 4 which is commonly required for the processing of all cells.
0 and A only needed to process cells of ABR class
By dividing and storing it into BR information and storing and selectively using it, the efficiency of access to the cell information storage means and
The utilization efficiency of the storage capacity can be improved.

Further, the configuration of the cell information storage means of the communication information storage device according to the present invention is effective as described below even when the information to be stored must be added.

FIG. 5 is a schematic diagram showing allocation of storage areas when additional information is stored in the storage areas of the cell information storage means in the communication information storage device and the communication information processing method according to the present invention. It is a figure.

First, common cell information 50, cell type 1 information 51, cell type 2 information 52, cell type 3 information 53, cell type 4 information 54, cell type 5 information 55, cell type 6 information It is assumed that the information 56 is stored and held in each storage area,
A case where the cell type 3 ′ information 57, which is the additional information to the cell type 3 information 53, is added here will be described. Here, it is assumed that the cell type 2 information 52 and the cell type 3 information 53 are cell information that are not used at the same time. That is, the cell type 2 information 52 is prioritized on the utilization efficiency of the storage area.
The cell type 3 information 53 and the cell type 3 information 53 are stored and held in a memory area read in the same word, and when one of the cell type 2 information 52 and the cell type 3 information 53 is used, the other not used is also simultaneously It is supposed to be read.

When the additional cell type 3'information 57 is added here, the additional cell type 3'information 57 itself is not divided, and priority is given to the utilization efficiency of the storage area even though they are not used at the same time. The cell type 2 information 52 and the cell type 3 information 53, which are stored and held in the storage area that is read by the same word, are divided and stored in storage areas that are read by different words, and the cell type 3 information is stored. The information 57 for the additional cell type 3 ′ is stored and held in the blank area of the storage area 53 in which the storage and storage is held. In some cases, blank areas 58 and 59 may occur.

For example, common cell information 50, cell type 1 information 51, and cell type 2 information 5 for processing the first cell.
2 is required, and common cell information 50, cell type 1 information 51, and cell type 3 information 53 for processing the second cell.
(After adding additional information, additional cell type 3'information 5
If 7) is required, the additional cell type 3'information 57
Before and after the addition of, the cell information of the storage area read out by two words is still necessary for the processing of both the first cell and the second cell. That is, even if the configuration of the entire storage area is changed, the additional cell type 3 ′ information 57 can be added and stored without lowering the access efficiency.

[0061]

As described above, according to the communication information storage device of the present invention, the cell type identifying means for identifying the information about the type of the input cell is provided, and the cell type identifying means identifies the cell type. According to the type of the cell, only the cell information stored and held in the storage area including the cell information necessary for the processing of the cell is selectively read from and written to the cell information storage means, and the processing of the cell is performed. Therefore, it is possible to reduce the number of accesses to the cell information storage means and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

Alternatively, a cell type identifying means for identifying information about the type of the input cell is provided, and a part of a plurality of types of cell information read according to the cell identification information identified by the cell type identifying means. Based on the cell identification information of the input cell and the cell identification information of the input cell, only the cell information stored and held in the storage area including the cell information necessary for the processing of the cell is selectively read and written from the cell information storage means, Since the processing is performed, it is possible to reduce the number of accesses to the cell information storage unit and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage unit.

The cell type identifying means generates selection information for selecting predetermined cell information necessary for processing the input cell among a plurality of types of cell information according to the identified type of the input cell, and the cell information storing means outputs the selection information. Since only the cell information stored and held in the storage area including the predetermined cell information according to the selection information based on the cell identification information is selectively read out, the cell type identification means determines the type of the cell identified. By selectively reading and writing only the cell information stored and held in the storage area including the cell information necessary for the processing of the cell from the cell information storage means, and processing the cell, the cell information storage means is stored. It is possible to improve the access efficiency by reducing the number of times of access, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

The cell processing means selectively writes the cell information that needs to be written back to the storage area of the cell information storage means among the selectively read cell information according to the communication processing performed on the input cell. Since the number of accesses to the cell information storage means is reduced, it is possible to improve the access efficiency and the utilization efficiency of the storage capacity of the cell information storage means, and further, to efficiently manage the statistical information and the like. It can be carried out.

Since the plurality of types of cell information stored and held in the cell information storage means are classified and stored for each type of cell information corresponding to the cell type, they are identified by the cell type identification means. By selectively reading and writing only the cell information necessary for the processing of the cell according to the type of the stored cell from the cell information storage means and performing the processing of the cell, the number of times of access to the cell information storage means can be determined. It is possible to reduce the efficiency and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

Further, the cell information discriminating means for discriminating a plurality of types of cell information based on the word information respectively given to the plurality of types of cell information is provided. Depending on the type, only the cell information necessary for processing the cell is selectively read from and written to the cell information storage means, and the cell is processed to reduce the number of accesses to the cell information storage means and access the cell information storage means. The efficiency of the storage capacity of the cell information storage means can be improved, and the utilization efficiency of the storage capacity of the cell information storage means can be improved.

Further, even when the additional information needs to be stored in the cell information storage means, the additional information is stored in the cell information storage means without dividing the additional information and changing the configuration of the entire storage area. Therefore, it is possible to prevent a decrease in the efficiency of access to the cell information storage means.

Further, according to the communication information processing method of the present invention, the information regarding the type of the input cell is identified, and the cell information necessary for the processing of the cell is identified in accordance with the identified type of the cell. Since only the cell information stored and held in the storage area including it is selectively read and written from the cell information storage means to process the cell, the number of times of access to the cell information storage means is reduced. The efficiency can be improved, and the utilization efficiency of the storage capacity of the cell information storage unit can be improved.

Alternatively, the information on the type of the input cell is identified, and a part of the plurality of types of cell information read according to the cell identification information identified by the cell type identification means and the cell identification of the input cell are identified. Based on the information and, only the cell information stored and held in the storage area including the cell information necessary for the processing of the cell is selectively read from and written to the cell information storage means, and the processing of the cell is performed. Therefore, it is possible to reduce the number of times of access to the cell information storage means and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

The cell type identification step includes a selection information generation step of generating selection information for selecting predetermined cell information necessary for processing an input cell among a plurality of types of cell information according to the type of the identified input cell, Since the predetermined cell information reading process is a process of selectively reading only the cell information stored and held in the storage area including the predetermined cell information in accordance with the selection information based on the cell identification information, the cell type identification means Only the cell information stored and held in the storage area including the cell information necessary for the processing of the identified cell is selectively read from and written to the cell information storage means according to the type of the identified cell, and the processing of the cell is performed. As a result, the number of accesses to the cell information storage means can be reduced to improve the access efficiency, and the utilization efficiency of the storage capacity of the cell information storage means can be improved. Can.

Further, in accordance with the communication processing performed on the input cell in the cell processing process, the cell information that needs to be written back to the storage area of the cell information storage means is selectively selected from the selectively read cell information. Since the cell information write-back process for writing back is provided, it is possible to reduce the number of accesses to the cell information storage means and improve the access efficiency and the utilization efficiency of the storage capacity of the cell information storage means. It is possible to efficiently manage statistical information and the like.

Since the plurality of types of cell information stored and held in the cell information storage means are classified and stored for each type of cell information corresponding to the cell type, they are identified by the cell type identification means. By selectively reading and writing only the cell information necessary for the processing of the cell according to the type of the stored cell from the cell information storage means and performing the processing of the cell, the number of times of access to the cell information storage means can be determined. It is possible to reduce the efficiency and improve the access efficiency, and it is possible to improve the utilization efficiency of the storage capacity of the cell information storage means.

Since the plurality of types of cell information can be identified based on the word information given to each of the plurality of types of cell information, the cells are identified according to the type of the cell identified by the cell type identifying means. By selectively reading and writing only the cell information necessary for the processing of the cell information storage means, and processing the cell concerned, the number of times of access to the cell information storage means can be reduced and the access efficiency can be improved. In addition, the utilization efficiency of the storage capacity of the cell information storage means can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a communication information storage device according to the present invention.

FIG. 2 is a schematic diagram of allocation of a storage area of a cell information storage means in the embodiment of the communication information storage device and the communication information processing method according to the present invention when the information used for the processing of the cell differs depending on the cell type. FIG.

FIG. 3 is an explanatory view schematically showing the allocation of the storage area of the cell information storage means according to the type of RM cell in the embodiment of the communication information storage device and the communication information processing method according to the present invention.

FIG. 4 is an explanatory view schematically showing the allocation of the storage area of the cell information storage means according to the type of QOS in the embodiment of the communication information storage device and the communication information processing method according to the present invention.

FIG. 5 is an explanatory diagram schematically showing allocation of storage areas when additional information is stored in the storage areas of the cell information storage means in the communication information storage device and the communication information processing method according to the present invention.

FIG. 6 is an explanatory diagram schematically showing allocation of storage areas of a cell information storage means in a conventional communication information storage device and communication information processing method.

FIG. 7 is a block diagram of a communication information storage device used in a conventional communication information processing method.

FIG. 8 is an explanatory diagram schematically showing the allocation of storage areas when additional information is stored in the storage areas of the cell information storage means in the conventional communication information storage device and communication information processing method.

[Explanation of symbols]

 10, 70 Communication information storage device 11 Cell type identification means 12, 72 Cell processing means 13, 73 Cell information storage means 14, 74 Input cell 15, 75 Output cell 16 Selection information 17 Cell information 20, 30, 40, 50, 60 common cell information 21, 51, 61 cell type 1 information 22, 52, 62 cell type 2 information 23, 65 cell type N information 31 loop back information 32 BECN information 41 ABR information 57 additional information 76 cells Information read command 77 Cell information

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Toshio Fujisawa 580-1 Horikawacho, Saiwai-ku, Kawasaki-shi, Kanagawa Inside Toshiba Semiconductor System Technology Center Co., Ltd.

Claims (20)

[Claims] 1. A cell type identification means for identifying the type of the input cell based on the cell identification information of the type of the input cell included in the input cell in response to the input of the input cell of the communication information, and the communication information A plurality of types of cell information used to process a plurality of types of cells is stored and retained in each of a plurality of divided storage areas, based on the cell identification information of the input cell, of the plurality of types of cell information. Cell information storage means for selectively reading only cell information stored and held in a storage area containing predetermined cell information necessary for processing the input cell, and communication processing of the input cell using the predetermined cell information. An information storage device for communication, comprising: a cell processing unit for performing and outputting as an output cell. 2. Cell type identification means for identifying the type of the input cell based on cell identification information of the type of the input cell included in the input cell in response to input of the input cell of the communication information, and communication information A plurality of types of cell information used for processing a plurality of types of cells is stored and held for each one or a plurality of types in a plurality of divided storage areas, and the plurality of types read according to the cell identification information of the input cell Based on a part of the cell information and the cell identification information of the input cell, only the cell information stored and held in a storage area including predetermined cell information necessary for processing the input cell among the plurality of types of cell information Is selectively read out, and a cell processing means for performing communication processing of the input cell using the predetermined cell information and outputting it as an output cell. Use information storage device. 3. The communication information storage device according to claim 1 or 2, wherein the cell type identification means inputs the one of the plurality of types of cell information according to the type of the identified input cell. Generating selection information for selecting predetermined cell information necessary for processing a cell, from the cell information storage means,
An information storage device for communication characterized in that only cell information stored and held in a storage area containing the predetermined cell information is selectively read out in accordance with the selection information based on the cell identification information. 4. The communication information storage device according to claim 1, wherein the cell processing unit is selectively read according to the communication processing performed on the input cell. A communication information storage device, which selectively writes back cell information that needs to be written back to the storage area of the cell information storage means among the cell information. 5. The communication information storage device according to any one of claims 1 to 4, wherein the plurality of types of cell information stored and held in the cell information storage means are cell information corresponding to cell types. An information storage device for communication, characterized in that the information storage device is classified and stored for each type. 6. The communication information storage device according to claim 5, wherein the cell information is stored in a storage area of the cell information storage means divided into rows, classified according to the type of the cell information. An information storage device for communication, which is held. 7. The communication information storage device according to claim 5, wherein the cell information is stored in a storage area of the cell information storage means divided into columns, classified according to the type of the cell information. An information storage device for communication, which is held. 8. The communication information storage device according to any one of claims 1 to 7, wherein the plurality of types of cell information are further identified based on word information given to each of the plurality of types of cell information. An information storage device for communication, comprising a cell information identification means. 9. The communication information storage device according to any one of claims 1 to 8, wherein the cell identification information is information about a cell route in a communication protocol. . 10. The communication information storage device according to any one of claims 1 to 8, wherein the cell identification information is information on a service quality of a cell in a communication protocol. apparatus. 11. A cell type identification process for identifying the type of the input cell based on the cell identification information of the type of the input cell included in the input cell in response to the input of the input cell of the communication information, and the communication information From the cell information storage means stored and held for each one or in each of a plurality of storage areas in which a plurality of types of cell information used for processing a plurality of types of cells are divided, based on the cell identification information of the input cell, A predetermined cell information reading step of selectively reading only cell information stored and held in a storage area including predetermined cell information necessary for processing the input cell among a plurality of types of cell information, and using the predetermined cell information, And a cell processing step of performing communication processing of an input cell and outputting the output cell as an output cell. 12. A cell type identification process of identifying the type of the input cell based on the cell identification information of the type of the input cell included in the input cell in response to the input of the input cell of the communication information, and the communication information From the cell information storage means in which a plurality of types of cell information used for processing a plurality of types of cells are stored and retained in a plurality of divided storage areas for each or a plurality of types, read according to the cell identification information of the input cell. Based on a part of the plurality of types of cell information and the cell identification information of the input cell, stored in a storage area including predetermined cell information necessary for processing the input cell among the plurality of types of cell information A predetermined cell information reading step of selectively reading only the held cell information; and a cell processing step of performing communication processing of the input cell using the predetermined cell information and outputting as an output cell, Method of processing communication information characterized by comprising. 13. The method of processing communication information according to claim 11, wherein the cell type identification process comprises:
The predetermined cell information reading step including a selection information generating step of generating selection information for selecting predetermined cell information necessary for processing the input cell among the plurality of types of cell information according to the identified type of the input cell. Is a process of selectively reading only cell information stored and held in a storage area containing the predetermined cell information according to the selection information based on the cell identification information. 14. The communication information processing method according to claim 11, further comprising: selectively reading according to the communication processing performed on the input cell in the cell processing process. A method of processing communication information, comprising: a cell information write-back step of selectively writing back cell information that needs to be written back to the storage area of the cell information storage means among the cell information. 15. The communication information processing method according to claim 11, wherein the plurality of types of cell information stored and held in the cell information storage means are cell information corresponding to cell types. A method of processing communication information, characterized in that the communication information is classified and stored for each type. 16. The communication information storage device according to claim 15, wherein the cell information is stored in a storage area of the cell information storage means divided in units of rows, classified by type of the cell information. An information storage device for communication, which is held. 17. The communication information storage device according to claim 15, wherein the cell information is stored in a storage area of the cell information storage means divided into columns, classified according to the type of the cell information. An information storage device for communication, which is held. 18. The communication information processing method according to claim 11, wherein the plurality of types of cell information can be identified based on word information given to each of the plurality of types of cell information. A communication information processing method characterized by being capable. 19. The communication information processing method according to claim 11, wherein the cell identification information is information about a cell route in a communication protocol. . 20. The communication information processing method according to claim 11, wherein the cell identification information is information about a service quality of a cell according to a communication protocol. Method.