• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    end. FIELD OF THE INVENTION The present invention relates to a subscriber matching device for an Asynchronous Transfer Mode (ATM) exchange. I. An object of the present invention is to provide a subscriber capacity expansion method for maximizing the use efficiency of a table in which subscriber information is registered. All. SUMMARY OF THE INVENTION A method of expanding a subscriber capacity in a subscriber matching apparatus, comprising: forming a table for registering subscribers and registering only subscriber information; and using a virtual path identifier of an input cell The second step of determining the connection type and determining whether the subscriber is registered using the virtual channel identifier of the input cell, and the header error control field of the input cell OAM connection information for the registered subscriber Characterized in that the third process of recording and transmitting in. la. Important Uses of the Invention: Can be used in ATM exchangers.
    公开号:KR20000042904A
    申请号:KR1019980059201
    申请日:1998-12-28
    公开日:2000-07-15
    发明作者:최성락
    申请人:윤종용；삼성전자 주식회사；
    IPC主号:
    专利说明:

    How to Expand Subscriber Capacity in Subscriber Registration Device
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber matching device for an Asynchronous Transfer Mode (ATM) exchange, and more particularly, to a method for expanding a subscriber capacity by increasing the use efficiency of a table required for subscriber registration.
    In general, in an ATM (Asynchronous Transfer Mode) exchange, a subscriber matching device receives an ATM cell as an optical signal or an electrical signal from a subscriber and transfers the received cell to another subscriber or another exchange through a switch.
    FIG. 1 is a block diagram of a general subscriber matching device showing a peripheral block configuration of a connection table in which a subscriber is registered. FIG. 2 is a detailed view of the connection table 30 in FIG. will be.
    In FIG. 1, the cell receiving and determining unit 10 receives a 53-byte cell input from a physical layer matching unit, and refers to a connection path (VPC, VCC) with reference to a VP index (Virtual Path Index) table 20. If the cell is transmitted from the registered subscriber by searching the connection table 30, it is determined to be a valid cell, and a connection ID is attached to the corresponding cell to attach the connection ID to the header for routing and OAM processing. , and Maintenance) to the processing unit 40. Meanwhile, a VP index for determining a connection type of input cells is registered in the VP index table 20, and a plurality of subscriber information are registered in the connection table 30 as shown in FIG. K) END-TO-END OAM information and segment OAM information are registered together. In addition, the cell receiver and determiner 10 determines the type of the input cell and transmits the cell type to the OAM processor 40 when the cell type is an OAM cell.
    The OAM processing unit 40 receives a 53-byte cell from the cell receiving and determining unit 10 to determine the connection type and registration as the subscriber cell, and updates the OAM table 50. In the OAM table 50, OAM information for determining a connection type of input OAM cells is registered.
    The capacity of the connection table 30 in the general subscriber registration device described above is finite. In addition, since the plurality of subscriber information, END-TO-END OAM information and segment OAM information of registered subscribers K are registered together in the connection table 30, the subscriber capacity can be reduced to 1/3. There is nothing else. That is, in the general subscriber matching device, not only the subscriber information is registered in the connection table 30 but also the OAM information for the registered subscriber is registered together, which causes a problem that the use efficiency of the subscriber registration table decreases.
    Accordingly, an object of the present invention is to provide a subscriber capacity expansion method for maximizing the use efficiency of a table in which subscriber information is registered in a subscriber matching device of an ATM switch.
    In order to achieve the above object, the present invention provides a method for expanding subscriber capacity in a subscriber matching device.
    Forming a table for registering subscribers and registering only subscriber information;
    A second process of determining a cell connection type by using a virtual path identifier of an input cell and determining whether a subscriber is registered using a virtual channel identifier of an input cell;
    And a third process of recording and transmitting OAM connection information about the registered subscriber in a header error control field of the corresponding input cell.
    1 is a block diagram of a typical subscriber registration device showing a peripheral block configuration of a connection table in which a subscriber is registered.
    FIG. 2 is a detailed view of the connection table 30 in FIG. 1.
    3 is a partial block diagram of a subscriber registration device according to an embodiment of the present invention.
    4 is a detailed view of the connection table 60 in FIG. 3.
    FIG. 5 is a configuration diagram of an ATM cell A transmitted to the OAM processing unit 40 in FIG. 3.
    6 is a flowchart of a received cell processing of the cell receiving and determining unit 10 according to the embodiment of the present invention.
    Hereinafter, an operation according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
    3 is a block diagram of a part of a subscriber matching device according to an embodiment of the present invention, and FIG. 4 is a detailed view of the connection table 60 in FIG. FIG. 5 illustrates a configuration diagram of an ATM cell A transmitted to the OAM processing unit 40 in FIG. 3, and FIG. 6 illustrates input cell processing of the cell receiving unit and the determining unit 10 according to an embodiment of the present invention. A flowchart is shown.
    First, referring to FIG. 3, the subscriber matching device according to the embodiment of the present invention has the same configuration as the general subscriber matching device shown in FIG. 1, but the connection table 60 includes the general connection table 30 shown in FIG. 2. Unlike), only pure subscriber information is registered.
    Referring to FIG. 3, the cell receiving and determining unit 10 receives a 53-byte cell input from a physical layer matching unit, and receives a VPI / VCI (Virtual Path Identifier / Virtual Channel Identifier) of the received cell. The VP index table (VPIT) 20 and the connection table 60 are searched to determine the connection type and subscriber registration of the corresponding cell. The cell receiving and determining unit 10 discards the input cell or adds 3 bytes of header information according to the determination result, and transmits 56 bytes of cell A to the OAM processing unit 40 for OAM processing and routing. Index information for identifying a connection type of an input cell is registered in the VP index table 20, and only subscriber information is registered in the connection table 60 as shown in FIG.
    On the other hand, the OAM processor 40 receives the 56-byte cell A from the cell receiving and determining unit 10 to determine the connection type and registration of the OAM cell in the same manner as the subscriber cell, and determines the OAM table 50. Update. In the OAM table 50, OAM information for determining a connection type of input OAM cells is registered.
    Hereinafter, a subscriber capacity expansion method according to an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 6.
    First, if there is 53 bytes of cell input from the physical layer matching unit, the cell receiving and determining unit 10 searches the VP index table 20 with the VPI of the cell input in step 70 to determine the cell connection type, and thereby VP. Extract the index. In this case, if the VP index value is 00 to 7F, the VPC connection is determined. If the VP index value is 80 to FE, the VCC connection is determined. In step 80, the cell receiving and determining unit 10 having determined the cell connection type searches the connection table in which the subscriber is registered using the extracted VP index and the VCI of the input cell to determine whether the corresponding subscriber is registered. If it is registered, extract the registered position, that is, the connection ID, and proceed to step 90. Otherwise, discard the input cell. In step 90, the cell receiving and determining unit 10 adds the connection ID, the VP index, and the line number extracted in step 80 to the front of the cell as shown in FIG. 5, and then OAM processing unit 40 for routing and OAM processing. To send).
    Meanwhile, the OAM cell determination of the input cell is performed as follows. First, if input cell is VPC connection and VCI is 3 or 4, it is determined as OAM cell for VPC.If input cell is VCC connection and VCI is 3 or 4, it is determined as VPC OAM for VCC. If larger and PTI = 4,5, it is determined as VCC OAM. The cell determined as the OAM cell also discards the OAM cell for the unregistered user cell by determining the connection type and registration in the same manner as the user cell as described above. The determined OAM cell type (OAM TYPE) is recorded in the HEC (Header Error Field) of the cell A of 56 bytes shown in FIG. 5 and transmitted to the OAM processor 40. In this case, the OAM processor 40 The information recorded in the HEC field is used as data for determining whether the corresponding OAM cell is a VPC OAM cell or a VPC OAM cell for VCC. In addition, the VP index and the connection ID CO_ID added to the front end of the cell A shown in FIG. 5 are used as a pointer for accessing the routing table and the performance monitoring table.
    As described above, in the embodiment of the present invention, since only the subscriber is registered in the subscriber registration table (connection table) and the OAM connection for the subscriber is not registered, only the OAM type is recorded in the HEC field and transmitted to the OAM processing unit 40. The entire subscriber registration table can be used only for subscriber registration.
    As described above, according to the present invention, only the subscriber is registered in the connection table and the OAM connection information for the subscriber is not registered. As a result, the subscriber capacity of the connection table can be expanded.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] In the subscriber receiving capacity expansion method in the subscriber matching device,
    Forming a table for registering subscribers and registering only subscriber information;
    A second process of determining a cell connection type by using a virtual path identifier of an input cell and determining whether a subscriber is registered using a virtual channel identifier of an input cell;
    And a third process of recording and transmitting OAM connection information about the registered subscriber in a header error control field of a corresponding input cell.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1998-12-28|Application filed by 윤종용, 삼성전자 주식회사
    1998-12-28|Priority to KR1019980059201A
    1998-12-28|Priority claimed from KR1019980059201A
    2000-07-15|Publication of KR20000042904A
    2001-11-15|Application granted
    2001-11-15|Publication of KR100310850B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019980059201A|KR100310850B1|1998-12-28|Enlarge method of subscriber number in atm subscriber interface|
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