KR100225362B1 - Management system having function of adjusting processing time - Google Patents

Abstract

The present invention relates to a satellite communication network management system having a command processing time adjustment function according to a network state, which is able to flexibly set the command processing time according to the network operation state. A network management system comprising a control means for controlling the system status and an operator terminal for inputting data necessary for overall system control and management including a base station and monitoring network operation status; A channel allocation information storage unit for updating and storing channel allocation status information applied at a predetermined time interval from the central station processor at every hour; and a transmission number storage unit storing a maximum number of command messages that can be transmitted in the system, and operating in the system. A channel specification information storage unit for storing the total number of transponder channel information, the channel assignment information storage unit and the number of transmittable message storage unit and the channel specification information storage unit to calculate the current network state based on the data set Network status calculation, a transmission message counter that counts the number of commands that are currently transmitted and processed by executing an up / down count each time a command message is transmitted and received, and a response message reception waiting time according to a control signal from the control means. And a response time register configured to store and set the control means. It is characterized in that the setting time of the response time register is variably set based on the network operation state information calculated by the network state calculation unit.

Description

Satellite communication network management system with command processing time adjustment function according to network status

The present invention relates to a control system for managing a satellite communication network, and more particularly, to a satellite communication network management system having a command processing time adjustment function according to a network state, which is able to flexibly set the command processing time according to a network operation state.

System control in the satellite communication system mainly used for remote communication is to be executed by the central control station that manages the overall network operation state, Figure 1 schematically shows the configuration of the central control station of the DAMA-SCPC satellite communication system The block diagram shown in FIG.

In FIG. 1, reference numeral 10 denotes an antenna for transmitting and receiving an uplink signal transmitted to a satellite (not shown) and a downlink signal transmitted from a satellite, and 20 denotes an antenna 10. RF transmission / reception for converting the downlink signal of the ultra-high frequency band received by the to an intermediate frequency (IF) signal and converting and outputting the intermediate frequency (IF) signal of the 70 MHz band to the RF signal of the ultra-high frequency band in reverse for the uplink signal. However, the RF transceiver 20 is an Orthogonal Mode Transducer (OMT) 21 that separates and inputs and outputs up and down link signals transmitted and received through the antenna 10 by using a polarization property of frequency. ) And the 12.25 to 12.75 GHz downlink frequency signal separated and input by the orthogonal mode converter 21 to a predetermined level, and the amplified signal is for example an intermediate frequency (IF) of 70 MHz. RF receiver 22 for converting the signal and RF transmitter for converting the 70 MHz intermediate frequency (IF) signal to be transmitted to the satellite into 14.0 to 14.5 GHz microwave and amplifying the signal to a predetermined level to generate an uplink frequency signal. It consists of (23).

Further, reference numeral 30 denotes an IF processing stage for processing a transmission / reception intermediate frequency (IF) signal in a 70 MHz band, and the IF processing stage 30 receives an intermediate frequency (IF) signal applied from the RF receiver 22. Intermediate frequency combination / distribution unit for separating and outputting a plurality of intermediate frequency signals and outputting a combination of intermediate frequency signals applied from a single channel per carrier (SCP) channel unit (SCU) 33 to be described later. C / D) 31 and the first SCPC channel unit for demodulating, decoding and outputting the IF signal applied from the intermediate frequency combination / distributor 31 and the message output from the network controller 40 to be described later. It consists of a second SCPC channel unit 33 which is encoded, modulated and output.

Further, reference numeral 40 performs a polling function for checking the state of each base station based on a response message transmitted from the base station after transmitting a control message to each base station through the SCPC channel unit 33, and a specific base station If there is a call request from the base station, the base station determines whether the other base station is in a communication state based on the information obtained in the polling process, and if the communication state is available, allocates available traffic channels of the satellite to both base stations. This is a network control unit that performs system control such as allowing direct communication with each other.

On the other hand, the network controller 40 extracts packet information from a message applied from the processor 41 and the SCPC channel unit 32, which controls the entire system and in particular, the call processing between the base stations. In addition, a service channel controller (SCC) 42 for generating and outputting a message of a time division multiplex (TDM) stream to the SCPC channel unit 33 and a service with the processor 41. Dual port RAM 43 for data transmission and reception between the channel controller 42, the program storage unit 44 in which the operation program of the processor 41 is stored, and the status information of each base station obtained by the above-described polling operation The base station information storage unit 45 is stored, and the channel information storage unit 46 stores the usage state of the communication channel.

In addition, reference numeral 50 denotes a network management system that enables the satellite communication network operation manager to monitor the overall network operating status and to control the entire satellite system including the base station as necessary.

That is, in the conventional satellite system having the above-described configuration, when there is a call setup request from any subscriber base station (not shown), the base station information obtained by polling by the processor 41 inside the network control unit 40 is polled. And allocating a channel having a requested bandwidth among currently available communication channels based on the channel state information recorded in the channel information storage unit 46, and a network operation manager through the network management system 50. While communicating with the processor 41 of the control unit 40, it is possible to control the overall system including the base station by monitoring the overall operating status of the system or by inputting a predetermined command as necessary.

Meanwhile, the processor in the network management system 50 sends a control command message to each base station and checks the execution result of the control command on the basis of the response message returned from the base station. If the response does not return within a predetermined time, a problem is recognized and a time out decision is made.

The response time according to the command message transmission is usually different depending on the network state based on the traffic volume. In the past, the network state is not considered in setting the response time, and thus the response time is effectively determined according to the network state. It could not be said that system control was executed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a satellite communication network management system having a command processing time adjustment function according to a network state in which a command processing time can be flexibly set according to a network operating state. have.

1 is a block diagram showing an internal configuration of a central control station of a general satellite communication system.

Figure 2 is a block diagram showing the internal configuration of the satellite communication network management system with a command processing time adjustment function according to the network state according to an embodiment of the present invention.

******* Explanation of symbols for the main parts of the drawing *******

10: antenna 20: RF transceiver

21: Orthogonal Mode Transducer (OMT)

22: RF receiver 23: RF transmitter

30: IF processing stage 31: intermediate frequency combination / distribution unit (IF C / D)

32, 33: SCPC channel unit 40: network control

41,52: Processor

42: Service Channel Controller (SCC)

43: Dual Port RAM 44: Program Storage

45: base station information storage unit 46: channel information storage unit

50,500: Network management system 51: Operator terminal

53: command storage unit 54: input command confirmation unit

55: Terminal Server 56: Hard Disk Drive (HDD)

57: magnetic tape drive (MTD) 58: channel assignment information storage unit

59: number of transmittable messages storage unit 60: channel specification information storage unit

61: network status management unit 62: transmission message counter

63: response time register

The satellite communication network management system having a command processing time adjustment function according to the present invention for realizing the above object includes a system-wide control including a control unit and a base station for controlling the system situation of the entire satellite communication network through data communication with a central station processor; A network management system comprising an operator terminal for inputting data necessary for management and monitoring a network operation status; A channel allocation information storage unit for updating and storing channel allocation status information applied at a predetermined time interval from the central station processor at every hour; and a transmission number storage unit storing a maximum number of command messages that can be transmitted in the system, and operating in the system. A channel specification information storage unit for storing the total number of transponder channel information, the channel assignment information storage unit and the number of transmittable message storage unit and the channel specification information storage unit to calculate the current network state based on the data set Network status calculation, a transmission message counter that counts the number of commands that are currently transmitted and processed by executing an up / down count each time a command message is transmitted and received, and a response message reception waiting time according to a control signal from the control means. And a response time register configured to store and set the control means. It is characterized in that the setting time of the response time register is variably set based on the network operation state information calculated by the network state calculation unit.

In other words, according to the present invention having the above-described configuration, it is possible to flexibly set the instruction processing time according to the network operation state so that more flexible and efficient system management can be executed according to the traffic amount.

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

2 is a block diagram showing an internal configuration of a satellite communication network management system having a command processing time adjustment function according to an embodiment of the present invention. In FIG. 2, reference numeral 51 denotes a network manager controlling and managing a system including a base station. An operator terminal for inputting data required for monitoring and monitoring network operation status, and 52 denotes a protocol agreed with the main processor 41 inside the network controller 40 according to a command inputted through the operator terminal. The processor 52 is a processor that controls the overall system while communicating through the processor 52, which is not shown but is duplicated in the same configuration so as to alternate roles in preparation for any abnormal operation.

On the other hand, reference numeral 53 is a command storage unit for storing the various commands used in the satellite communication network management system 500 as data, 54 is the operator terminal 51 based on the data stored in the command storage unit 53 An input command checking unit 55 for checking whether or not an error of an input command is executed by performing a syntax check and semantic check on the command inputted through the command, wherein the processor 52 and the network controller 40 It is a terminal server of a redundant structure that provides a communication line between the main processors (41).

In addition, reference numeral 56 is a hard disk drive (HDD) that has a redundant structure like the processor 52 and stores data for communication network operation and system management, and 57 is a channel used for subscribers communicating through a satellite channel. It is a magnetic tape drive (MTD) that stores billing data such as TC (Trunk Code) data and talk time of calling / receiving subscribers.

In addition, reference numeral 58 is a channel assignment information storage unit which updates and stores channel allocation status information applied at a predetermined time interval from the network controller 40 at every hour, and 59 stores a maximum number of command messages that can be transmitted in the system. 60 is a channel specification information storage unit for storing total transponder channel number information operated in the system, and 61 is a channel assignment information storage unit 58 and a transmittable message number storage unit 59. And a network state calculation unit for calculating a current network state based on the data set and stored in the channel specification information storage unit 60.

On the other hand, reference numeral 62 is a transmission message counter that counts the number of instructions that are currently being transmitted and processed by executing an up / down count for each instruction message when the instruction message is transmitted and received, and 63, in accordance with a control signal from the processor 52. Response time register to save and set response message reception waiting time.

Next, the operation of the device having the above configuration will be described.

The satellite communication network operation manager monitors the system status including the satellite channel and each base station currently operating through the operator terminal 51 of the network management system 50 and, if necessary, inputs data for system control through contracted commands. When the command is input by the operator, the processor 52 first controls the input command checker 54 to parse and semantic check the command input by the operator. By executing the command, you can check whether the command entered is in error.

If an error is detected, such as an error check result, the command input by the operator is confirmed as an unusable command in the system, the processor 52 transmits an error message to the operator terminal 51. If not, the operator input command is transmitted to the network controller 40 through the terminal server 55, and the count value of the transmission message counter 62 is added to '1'. On the other hand, when the response message is received and the number of instructions being processed is reduced by one, the processor 52 decrements the count value of the transmission message counter 62 by one.

The processor 40 of the network controller 40 is provided with the channel information that is currently allocated and used periodically every one minute through the terminal server 55. The processor 52 in the network management system 500 ) Updates and stores the channel information applied through the terminal server 55 in the channel assignment information storage unit 58 at every data application time.

On the other hand, the network state calculation unit 61 is a network operation state and system based on the data set in the channel assignment information storage unit 58, the number of transmittable messages storage unit 59 and the channel specification information storage unit 60 The performance is calculated, for example, in the network operation state, the use channel in which the total number of transponder channels stored in the channel specification information storage unit 60 is stored and set in the channel assignment information storage unit 53. The system performance is calculated as a percentage obtained by dividing the maximum number of transmittable messages stored and stored in the transmittable message number storage unit 59 by the count value counted by the transmission message counter 62. Done.

The network state calculation unit 61 converts the current network state into three states of normal, load, and overload based on the network operation state information and system performance information calculated by the above process. For example, when the sum of the network operation state information and the system performance information exceeds 100%, the network state is determined as a normal state, a load state when 160%, and an overload state when it exceeds 180%. Done.

Meanwhile, the network state calculation unit 61 reports the network state information calculated by the above process to the processor 52, and the processor 52 is set in the response time register 63 based on this. By setting the response times as t1, t2, and t3, respectively, the criterion for determining whether or not the response message times out is adjusted.

That is, according to the above embodiment, it is possible to realize a satellite communication network management system having a command processing time adjustment function according to the network state, which enables the variable processing of the command processing time according to the network operation state.

Meanwhile, the present invention is not limited to the above embodiments and can be variously modified within the scope not departing from the technical gist of the present invention.

As described above, according to the present invention, it is possible to flexibly set the instruction processing time according to the network operation state so that more flexible and efficient system management can be executed according to the traffic amount.

Claims (1)

It is equipped with a control unit for controlling the system status of the entire satellite communication network through data communication with the central station processor, and an operator terminal for inputting data necessary for the control and management of the system including the base station and monitoring the network operation. Network management system; A channel assignment information storage unit for updating and storing channel assignment state information applied at a predetermined time interval from the central station processor at every hour; Sendable message storage unit for storing the maximum number of command messages that can be transmitted in the system, Channel specification information storage unit for storing the total number of transponder channel information operating in the system, A network state calculation unit for calculating a current network state based on data set in the channel assignment information storage unit, the number of transmittable messages storage unit, and the channel specification information storage unit; A transmission message counter that counts the number of instructions that are currently being transmitted and processed by executing an up / down count for each instruction message sent and received, and And a response time register configured to store and set a response message reception waiting time according to a control signal from the control means, wherein the control means comprises a response time register based on network operation state information calculated by a network state calculation unit. A satellite communication network management system having a command processing time adjustment function according to a network state, characterized in that the setting time is set to be variable.