KR100216575B1 - Access controlling method between nas and oam system by specific data structure - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Call connection control method between network connection subsystem and operation management device of high-capacity communication processing system using data structure

2. The technical problem to be solved by the invention

A special data processing structure is placed between the network access device and the operation management device of the large-capacity communication processing system, and the call connection control is used to perform the operation management and maintenance functions of the system by assigning these individual data structures to system functions and protocol procedures as appropriate. To provide a way.

3. Summary of Solution to Invention

The present invention provides a protocol identifier field for distinguishing access network information in a call connection between a network access subsystem and an operation management apparatus of a mass communication processing system; A message type field for distinguishing a control packet from a data packet; A sequence number field for use in the retransmission protocol; Reserved field; By transmitting the data using a data structure including a data field for storing and transmitting the data, it is possible to increase the flexibility and compatibility of the data and to actually implement the data.

4. Important uses of the invention

Used for call connection control of large capacity communication processing systems.

Description

Call connection control method between network connection subsystem and operation management device of high-capacity communication processing system using data structure

The present invention relates to a call connection control method for controlling a call connection between a network connection subsystem and an operation management apparatus of a mass communication processing system using a data structure.

A communication processing apparatus provides a function of accessing an information service of an information provider connected to a data network by accessing subscriber terminals connected to various heterogeneous networks. Originally, there is a network access device that provides a connection function between heterogeneous networks. However, this does not provide a service interworking function, but only a network interworking. Therefore, a separate effort is required to use a service.

Due to the development of communication processing devices, service interworking between these heterogeneous networks is possible, but another operation management device is required for the maintenance and management of each network access device providing access functions between heterogeneous networks. There is a need for a protocol for communication and a protocol that can satisfy this procedure between the access device and the operational management device. These protocols can be classified into various types according to the characteristics of the data exchanged, that is, the amount of data and the frequency, congestion, and reliability of the data.

In addition, even if these protocols are made, it is necessary to design and manufacture a data structure that can flexibly adapt to various protocols. In other words, since the network types accommodated in the high-capacity communication processing system are diverse and the characteristics of each network are different, the shape of the network connection device is different from each other. Therefore, the call management procedure can be easily managed in the unit system management system. Regardless, a standardized protocol processing structure is needed.

In order to solve the above problems, the present invention has a special data processing structure between a network access device and an operation management device of a large-capacity communication processing system, and assigns these individual data structures to system functions and protocol procedures to operate the system. The purpose is to provide a call connection control method that is highly flexible and compatible with data, and that can be implemented to perform management and maintenance functions.

1 is a connection structure diagram of a network connection device and an operation management device of a large-capacity communication processing system to which the present invention is applied;

2 is a flowchart for call connection control according to the present invention;

3 is a complex procedure diagram of a protocol according to the present invention;

4 is a structural diagram of a packet for performing an operation management (OAM) function according to the present invention;

5 is a structural diagram of an acknowledgment (ACK) data packet for performing an operation management (OAM) function according to the present invention;

6 is a structural diagram of general data for performing an operation management (OAM) function according to the present invention;

7 is a structural diagram of service type identifier data for performing an operation management (OAM) function according to the present invention;

* Explanation of symbols for the main parts of the drawings

11: network connection device 12: operation management device

13: unit system management device 15: high speed switch

In order to achieve the above object, according to the present invention, when a call connection is requested from a transmitting side connecting apparatus to a receiving side connecting apparatus using a control packet for interworking, the receiving side connecting apparatus which has been requested to call is connected to the transmitting side connecting apparatus. Initiating a call connection by notifying the call connection acceptance of the call; A second step of transmitting / receiving necessary data at a transmitting / receiving side by performing a protocol combining a plurality of transmitting and receiving procedures structured for each module; And when a call connection termination request is made from the receiving side connection apparatus that has finally received the data to the transmitting side connection apparatus, the transmitting side connection apparatus releases the connected call and confirms the call connection termination confirmation thereto. In the call connection control method between the network connection subsystem and the operation management device of the mass communication processing system comprising a third step of notifying the device, the data structure used for data communication between the network connection subsystem and the operation management device A protocol identifier field for identifying access network information of the network access device; A Message Type field for distinguishing a Control packet for procedure establishment and a Data packet for data exchange after protocol establishment; A sequence number field used for a retransmission protocol for guaranteeing reliability of data; A reserved field reserved; And a first data (Protocol-Specific-Data) field for storing and transmitting data.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is a connection structure diagram of a network connection device and an operation management device of a large-capacity communication processing system to which the present invention is applied. In FIG. 11, a network connection device, 12 an operation management device, 13 a unit system management device, and 14 and 15 HSNA interface, 15 is high speed switch, 17 is operation management data processing board (OSPA), and 18 is LAN interface.

The unit system management device 13 of the operation management device 12 is connected using the high speed switch 15 and the management device connection (ONAS) 16, 17, and the management device connection 16, 17 is connected to each network. It performs the same role as the processor board (SPA) 4 of the device (NAS) 11. The interworking protocol between the operation management device 12 and each network access device (NAS) 11 is actually handled by the unit system management device (LOMS) 13.

In the mass communication processing system, the call connection function of the access network is in charge of the network access device 11, and all operations necessary for call processing in each network access device 11 are in charge of the service processor (xSPA) 14. At this time, the service processor (SPA) 14 of each network connection device 11 is constructed to meet the form made in the present invention for communicating with the unit system management device 13, and to transmit according to a certain protocol. .

2 is a flowchart for call connection control according to the present invention.

The protocol between the unit system management device 13 and the network connection device 11 is designed to be performed while exchanging control packets for interworking and data packets for data transmission and reception. Protocol primitives allow data packets to be processed after a call connection is made.

The protocol between the unit system management device 13 and the network connection device 11 requests call connection from the transmitting connection device 21 to the receiving connection device 22 using a control packet (23). The call connection is made when the receiving side connection device 22 that has received the notification notifies the call connection acceptance acknowledgment 24 to the transmitting side connection device 21. Next, the transmission / reception side performs the protocol 27 necessary for data transmission / reception and transmits and receives data, and the call connection termination point 25 is transmitted from the reception side connection device 22 that received the data to the transmitting side connection device 21. Upon request, the transmitting side connection device 21 terminates the procedure by releasing all the connected calls and notifying the call connection termination confirmation 26 thereof.

At this time, the time interval between control packets for data transmission and reception is set to t1 (28), and the time interval between data packets is set to t2 (29) so that an abnormal state is detected when data is not transmitted or received within a given time interval. To exit. All given data is processed in the data transmission / reception procedure 27 in accordance with the protocol proposed in FIG. If an abnormal situation occurs during the call connection procedure (23, 24) or call release procedure (25, 26), the call is released immediately without proceeding to the next call processing procedure so that the service of another user is not disturbed.

3 is a complex procedure diagram of a protocol according to the present invention, showing a method of combining the above-mentioned four protocols.

The report procedure 311 indicates a procedure for receiving a report from each network access device 301 by using the report protocol 303 in the unit system management device 302. This reporting procedure includes system status reporting, alarm reporting and billing data reporting.

The request procedure 312 is a unit system management device 302 receives a request from each network access device 301 according to the request protocol (304), without downloading the call connection (Download Download) Data transmission using the protocol 305. Most of this data is mostly related to the shape data.

The demand report procedure 313 requests the unit system manager 302 to perform a procedure such as reporting a status to each network access device 301 by using the mandatory reporting protocol 306. When the network access device 301 terminates, each network access device 301 performs a call connection procedure, such as a report procedure 311, by using a report protocol 307 after connecting a new call. This is a data protocol that is often used when you want to know the status of the current system immediately.

The mandatory information request procedure 314 is a unit system management device 302 to perform a procedure such as reporting information download to each network connection device 301 by using the mandatory information request protocol 308. Upon request and termination of the call connection, when each network connection device 301 informs that necessary information is delivered after the state of the current system is summarized (309), the unit system management device 301 receives an information download protocol ( 310). This is a protocol to be useful when the communication processing system is in service. It is mainly used to change the shape of the sub-system by arranging the call of the subscriber who is using the service and re-registering the changed system shape in the system.

4 is a structure diagram of a packet for performing an operation management (OAM) function according to the present invention, which is divided into a control packet for procedure establishment and a data packet for data exchange after protocol establishment.

Each protocol packet is classified into a message type field 42. A control packet stores data between the system management device 13 and the network connection device 11 of the operation management device 12. Control packet to secure communication path for forwarding; call connection request (HSSF_USER_CONN_REQ), call connection acceptance confirmation (HSSF_USER_CONN_CNF), call connection acceptance termination (HSSF_USER_CONN_CLR), call connection termination request (HSSF_USER_CLR_REQ), call connection termination confirmation (HSSF_USER_CLR_CNF) Is done. Data packets use data transmission and reception (HSSF_USER_DATA) primitives.

Each network access device 11 distinguishes its access network information with a protocol identifier field 41, and assigns a sequence number field 43 for use in a retransmission protocol for ensuring data reliability. The Sequence Number field 43 uses a Modulo 128 value.

All data communication between the network access points 11 of the communication processing system uses the data structure shown in Fig. 4, and stores data in the Protocol-Specific-Data field 45 for transmission. The reserved field is reserved.

FIG. 5 is a diagram illustrating a structure of an acknowledgment (ACK) data packet for performing an operation management (OAM) function according to the present invention, in which a sequence number field of FIG. 4 is defined to be used in a retransmission protocol.

According to the method of setting the most significant bit (MSB) 54 of the Sequence Number field, it is possible to indicate the continuity of subsequent data. A most significant bit of 1 indicates that data is contiguous; a most significant bit of 0 indicates that data is not contiguous.

6 is a structural diagram of general data for performing an operation management (OAM) function according to the present invention, which is a method of defining a protocol-specific-data field 45 of FIG.

Each network access device 11 may use a separate data structure defined according to a target network to communicate with. Here, a data structure for communication between each network matching device 11 and the unit system management device 13 is defined.

The common (PRG) field 61 is the first operation management group, commonly used in operation management (OAM), and defined as development management (CM), alarm management (FM), performance management (PM), and billing management (AM). do. The SG field 62 is defined as the OAM Secondary Group by the Primary Group of the OAM, and the LEN field 63 is the DATA. The length of the data stored in the field 68 is displayed, and the object ID field 64 provides a method for displaying all managed objects of the mass communication processing system. Since the type and number of the actual service access network are different from each other, the service access network includes an access network identifier (ASID) field 69 for distinguishing the service access network and a management object access network identifier (ASObjectID) field 70 separately defined in each service access network.

The message generation time (MSG-TIME) field 65 is a field for storing the time of generating the data structure as an ASCII code, and the tag field 66 sends data 68 for each network access device. It is possible to add a method or reason, and the continuity (MORE) field 67 may indicate the continuity of the current data and the next data. The DATA field 68 is designed to store data to be transmitted from each network access device to the operation management device or actual data to be transmitted in the reverse direction.

FIG. 7 is a structure diagram of service type identifier data for performing an operation management (OAM) function according to the present invention. FIG. 7 is a method in which a dependent common (SEG) field of FIG. 6 can be extended. It is assigned to system service command so that it can cope with system expansion and service function addition.

Currently, only a part related to CM for downloading information from the unit system management apparatus 13 is defined. Information to be downloaded includes operating system (OS), service application (Application), initial page (Welcome Page), system time information (System Time), HSNA routing table information, access network ( It is divided into an Access Network related information provider table (IP table), an access network circuit information (SubNetwork Configuration Information), and a packet network line allocation information (Packet Network Allocation Table). The definition of each signal is assigned in a manner that distinguishes the associated access network identifiers 75, 76, 77, 78 and the information identifiers 71, 72, 73, 74 in preparation for system expansion and information expansion. Signal definition method is as follows.

Info selected: b8 b7 b6 b5

0 0 0 0: Reserved

0 0 0 1: OS

0 0 1 0: Service program

0 0 1 1: Initial screen

0 1 0 0: Information provider table

0 1 0 1: System time

0 1 1 0: Routing Table

0 1 1 1: Sub network information

1 0 0 0: Value added network information

0 1 1 1 ~: Reserved

Signal selection: b4 b3 b2 b1

0 0 0 0: Reserved

0 0 0 1: Demand

0 0 1 0: Request

0 0 1 1: Action

0 1 0 0 ~: Reserved

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

The present invention as described above makes it possible to prepare a very simple operation management procedure irrespective of the shape of various network access devices, and the same form also applies to other types of network access devices that will be introduced into the mass communication processing system in the future. By providing a method to use the access procedure of the system, it is possible to flexibly cope with the expansion of the system. In addition, although the management function of each network access device of the communication processing system and the information required by each network access device are different from each other, various procedures necessary for the transmission and reception of information are subdivided, and they are again structured by modules to combine various types of transmission and reception procedures. By doing so, it is possible to flexibly cope with the system structure, and based on well-defined data structure and combination method, the format is uniform but can handle various functions.

Claims (7)

When a call connection is requested from the sending side connecting apparatus to the receiving side connecting apparatus using a control packet for interworking, the receiving side connecting apparatus which has requested the call connection informs the transmitting side connecting apparatus to accept the call connection and starts the call connection. Performing a first step; A second step of transmitting / receiving necessary data at a transmitting / receiving side by performing a protocol combining a plurality of transmitting and receiving procedures structured for each module; And when a call connection termination request is made from the receiving side connection apparatus that has finally received the data to the transmitting side connection apparatus, the transmitting side connection apparatus releases the connected call and confirms the call connection termination confirmation thereto. In the call connection control method between the network connection subsystem and the operation management device of the mass communication processing system comprising a third step of notifying the device, the data structure used for data communication between the network connection subsystem and the operation management device A protocol identifier field for identifying access network information of the network access device; A Message Type field for distinguishing a Control packet for procedure establishment and a Data packet for data exchange after protocol establishment; A sequence number field used for a retransmission protocol for guaranteeing reliability of data; A reserved field reserved; And a first data (Protocol-Specific-Data) field for storing and transmitting data. 2. The call connection control according to claim 1, wherein the sequence number field is configured to indicate continuity of subsequent data according to a method of setting the most significant bit (MSB) of the sequence number field. Way. 3. The method of claim 2, wherein the sequence number field is configured to indicate that data is continuous when the most significant bit is 1, and that data is not continuous when the most significant bit is zero. 4. The method of claim 3, wherein the Sequence Number field uses a Modulo 128 value. 3. The method of claim 2, wherein the first data (Protocol-Specific-Data) field is a first management group, the common management common field (PRG) field commonly used in OAM; A secondary common management group (OAM Secondary Group), a subordinate common (SEG) field defined and used for each common field of the operational management (OAM); A length (LEN) field indicating a length of data stored in a data field; A management object identifier (ObjectID) field indicating a management object of the mass communication processing system; A message generation time (MSG-TIME) field for storing the time at which the data structure was generated; A TAG field for adding a method or a reason for sending data for each network access device; A continuity (MORE) field indicating the continuity of the current data and the next data; And a second data field storing data to be transmitted. The method of claim 5, wherein the ObjectID field comprises: an access network identifier (ASID) field for distinguishing a service access network because the type and number of the actual service access network are different from each other; And a management object access network identifier (ASObjectID) field defined separately in each service access network. The method according to any one of claims 1 to 6, wherein the SG field is assigned to each signal in a manner of distinguishing the access network identifier and the information identifier in order to prepare for system extension and information extension. Call connection control method characterized in that.