KR20000044228A - Protection message processing apparatus of v 5.2 protocol - Google Patents

Abstract

PURPOSE: A protection message processing apparatus is provided to process a protection message according to a priority in case of processing the protection massage of V 5.2 protocol. CONSTITUTION: A protection message processing apparatus comprises the third layer(100) of a V 5.2 and the second layer(200) of the V 5.2. The third layer(100) has a plurality of tasks(110,120,130,140,15) for confirming a public switched telephone network(PSTN) message, a control message, a link control message, a first protection message, and an ISDN type message. The second layer(200) consists of a message reception buffer(210), a message processing part(220), a message deposit buffer part(230) and a switch circuit(240). The message reception buffer(210) sequentially stores messages transferred from the third layer(100) in a first-in first-out format. The message processing part(220) sequentially receives messages stored in the message reception buffer(210) through the switch circuit(240), and checks an importance degree of each message to transfer the checked messages to the message deposit buffer part(230). The message processing part(220) reads the messages stored in the message deposit buffer part(230) through the switch circuit(240) according to the importance degree.

Description

Apparatus and method for processing protected messages of V5.2 protocol

The present invention relates to an apparatus and method for processing V 5.2 protocol, and more particularly, to an apparatus and method for processing a protection message of V 5.2 protocol.

Typically the exchange system is directly connected to the subscriber or through the transmission equipment. Such transmission equipment is located in a place where telephone lines are densely packed, such as an apartment complex, thereby connecting many subscribers and a switching system. This will be described with reference to FIG. 1. 1 is a block diagram connected through a transmission device between the switching system and the subscriber. The exchange system 10 is connected to the transmission equipment 20 through the cable 30, the transmission equipment 20 is connected to a plurality of subscribers (A, B, C, D, ..., N). As such, the physical link between the transmission device 20 and the exchange system uses a cable 30, and the protocol used between the exchange system 10 and the transmission device 20 is V 5.2 (V5.2) protocol. Use In addition, when an error occurs in the line between the exchange system and the transmission device 20 connected through the cable 30, the transfer of the line to be used is performed. This switching process will be described with reference to FIG. 2. 2 is a diagram illustrating states of frames and channels of an E1 link. As shown in FIG. 2, the E1 link is composed of 16 frames from 0 to 15, and there are 32 channels in each frame. In addition, 16 of the channels of each frame are channels allocated for control information and multi-frame synchronization, and 1 to 15 channels and 17 to 31 channels except for 16 channels are used for information and voice signals.

A case where a failure occurs in each of these frames will be described. First, when information indicating that a failure has occurred in frame 1 is received through channel 16, a switchover is made to frame 2, which is another frame not in use. Then, the information carried on each channel of frame 1 is transmitted and received through the same channel or another channel of frame 2. When data is transmitted through a channel configured to transmit specific information, such as channel 16, between the exchange system 10 and the transmission device 20 having the configuration as shown in FIG. 1, the transmitted data must be based on the V 5.2 protocol. do.

3 is a functional block diagram of processing a received message in a system currently using the V 5.2 protocol. Hereinafter, a routine of processing a received message of the current V 5.2 protocol will be described with reference to FIG. 3. The third layer 100 of V 5.2 includes a task 110 for checking a message of a public network (PSTN), a task 120 for checking a message for a control, and a message for a link control. Task 130 for confirming, task 140 for confirming the message for the first protection (PROTECTION_PRI), task 150 for confirming the message for the integrated information communication network type (ISDN_TYPE) and the like. The task of checking the message is a message receiving buffer 210 that detects a message that is under its jurisdiction and receives the message in the form of FIFO: First In First Out (FIFO) on the second layer 200 of V 5.2. Print a message to Then, the message processing unit 220 processes them one by one in the order received by the message receiving buffer 210. And if it is necessary to send a message, it generates this message and outputs the message to each task of the third layer of V 5.2. 3 illustrates a path in which a message is generated and output by the message processor 220.

The message generated by the message processing unit 220 is delivered through the path as described above, and processed according to the order received by the message receiving buffer 210. Thus, the processing of the message is configured to be processed only by the received sequence number. Therefore, urgent messages, such as messages that require line switching or messages requiring frame switching, are processed only by the received sequence number. Therefore, the urgent message had to be processed in the same class as other messages. As a result, there is a case that data is lost due to delayed line transfer, which causes problems such as deterioration of system stability and deterioration of quality of service (QoS).

Accordingly, an object of the present invention is to provide an apparatus and method capable of processing a priority message when processing a protection message of the V 5.2 protocol.

Another object of the present invention is to provide an apparatus and method for increasing the stability of a system and improving the quality of service in a system using the V 5.2 protocol.

1 is a block diagram connected through a transmission device between the switching system and the subscriber,

2 is a diagram illustrating states of frames and channels of an E1 link;

3 is a functional block diagram of processing an incoming message in a system currently using the V 5.2 protocol;

4 is a functional block diagram of processing a received message in a system using the V 5.2 protocol in accordance with the present invention.

An apparatus for processing a message of the V 5.2 protocol according to the present invention for achieving the above objects comprises: three layer message detection tasks of the V 5.2 protocol for detecting and outputting prescribed messages of the V 5.2 protocol, and the V 5.2 protocol. A message buffer in the FIFO format provided on the second layer of the V5.2 protocol for storing messages received from the message detection tasks of the third layer of the protocol, and the second layer of the V5.2 protocol, Message storage buffers for storing messages by dividing stored messages by importance, and reading messages stored in the message buffer to distinguish only importance, and storing them in a message storage buffer corresponding to the classified importance, and then storing the messages in high importance. Message processing unit for reading and processing from the message stored in the Connecting the processor and the message or message buffer is characterized by a switch configured to connect with the message storage buffer.

In order to achieve the above objects, a method of processing a message in the second layer of the V 5.2 protocol in a V 5.2 protocol system according to the present invention includes sequentially reading data stored in a message buffer and checking the importance; Storing the message in the corresponding message storage buffer according to the importance level, reading the message buffer having a high priority from the message storage buffer part, and reading the stored message if there is a stored message, and reading from the message storage buffer part. Characterized in that it comprises a step of processing data.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, the same parts will be denoted by the same reference numerals, although shown in other drawings.

4 is a functional block diagram of processing a received message in a system using the V 5.2 protocol according to the present invention. Hereinafter, a processing operation upon receiving a message in a system using the V 5.2 protocol according to the present invention will be described in detail with reference to FIG. 4.

Since the third layer 100 of the V 5.2 protocol performs the same operation as described with reference to FIG. 3, a detailed description thereof will be omitted. Each task of the third layer 100 of the V5.2 protocol checks whether a message is received through a set channel of each frame as described above. If such a message exists by such a check, it is detected and input to the second layer 200 of the V 5.2 protocol. The messages input to the second layer 200 of the V 5.2 protocol are sequentially stored in the message receiving buffer 210 which receives the messages in the format of packets in the order of input. The messages stored in the message receiving buffer 210 are read in the order stored in the message processing unit 220. In this case, the switch 240 configured according to the present invention connects the message receiving buffer 210 and the message processing unit 220 under the control of the message processing unit 220. In this way, the messages input to the message processor 220 are input to the message storage buffer 230 having a weight by checking the importance. However, if there is no message stored in the message storage buffer unit 230, and there is only one message stored in the message buffer 210, it may be configured to process the message immediately without checking the importance.

The buffers of the message storage buffer unit 230 may be configured by the same number as the task of the layer 3 of the V 5.2 protocol, or may be configured according to the level of importance. When the messages are stored in the storage buffer configured as described above, the message processor 220 reads the messages in order of importance among the messages stored in the storage buffer 230. In this case, the message processing unit 220 connects the switch 240 to the message storage buffer unit 230. Also, if there is more than one message of the same importance, the stored message is read first. This process allows messages that use the V 5.2 protocol to be processed in order of importance.

As described above, the message used in the V 5.2 protocol used for the connection between the exchange system and the transmission equipment can be used according to the importance, so that the system can be stabilized and the quality of service can be improved. .

Claims (5)

In a device for processing messages of the V 5.2 protocol, Layer 3 message detection tasks of the V 5.2 protocol for detecting and outputting the specified messages of the V 5.2 protocol; A message buffer in a FIFO format provided in the second layer of the V5.2 protocol for storing messages received from the message detection tasks of the third layer of the V5.2 protocol; Message storage buffers provided in the second layer of the V 5.2 protocol and storing messages classified by importance into messages stored in the message buffer; A message processing unit which reads the message stored in the message buffer, classifies only the importance, stores the message in the message storage buffer corresponding to the classified importance, and then reads and processes the message stored in the message storage buffer having a high importance; And a switch for connecting the message processor to the message buffer or the message storage buffers. The method of claim 1, wherein the message processing unit, And a message stored in the message buffer when there is no message stored in the message holding buffers and there is only one message stored in the message buffer. In the V 5.2 protocol system, a method for processing a message in the second layer of the V 5.2 protocol, Reading the data stored in the message buffer sequentially and checking the importance; Storing the message storage buffer in a corresponding message storage buffer according to the checked importance; Checking a message buffer having a high importance in the message storage buffer unit and reading the stored message if there is a stored message; And processing the data read from the message storage buffer unit. The method of claim 3, When two or more messages are stored in one message storage buffer of the message storage buffer unit, the method further comprises reading and processing the stored message first and then reading and processing the stored message later. Way. The method according to claim 3 or 4, And immediately processing data read from the message buffer when there is no message stored in the message storage buffer unit and there is only one message stored in the message buffer.