JP2752910B2 - Status management method of hierarchical network system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of satellite access controllers which are intermediate communication devices under the control of a satellite network control device which is an upper communication device, and a lower communication device which communicates with the satellite access controller through a satellite line. A plurality of satellite satellite earth stations, a satellite network controller having configuration information of these communication devices and controlling the communication devices, and a status notification of the status of the satellite link transmitted from the satellite network controller and managed as status information The present invention relates to a status management method in a hierarchical network system including a status monitoring device.

[0002]

2. Description of the Related Art Hitherto, a status management method of a hierarchical network system is based on a method in which a satellite access controller disposed in a central satellite communication earth station detects a failure in a satellite line used by a lower child satellite communication earth station. The upper-level satellite network controller (located within the central satellite communication earth station) notified of the status unconditionally determines whether the subordinate satellite communication earth station is physically present or not, and unconditionally checks the status monitoring device (central satellite communication earth station). Communication station).

[0003]

In this conventional status management method for a hierarchical network system, a higher-level satellite network control device controls a satellite link between a middle-level satellite access controller and a lower-level child satellite communication earth station. If there is no past establishment information and the configuration information is constructed as a network system (satellite communication network), unconditional satellite link failure between subordinate satellite communication earth stations detected by the satellite access controller is detected. Since the information is transmitted to the status monitoring device, even if the lower child satellite communication earth station does not physically exist, it is managed as status information. This is due to the change of configuration information by adding a large-scale satellite communication earth station by customizing the satellite communication network of the operator, and the configuration information held in the satellite network control device when building a large-scale hierarchical network system and the actual subordinate Occurs when there is a difference between the slave satellite communication earth station.

[0004] In particular, in the case of a large-scale hierarchical network, when a large amount of status of this satellite link fault occurs, a large amount of fault occurrence data is sent to the status monitoring device, which imposes a load on the entire system. In addition, there has been a problem that the control is temporarily disabled due to a decrease in processing speed and an increase in the line usage rate to the status monitoring device.

[0005]

According to the present invention, there is provided a satellite network control device of a higher-level communication device for managing configuration information of a communication device of a satellite communication network, and a plurality of satellite access controllers serving as intermediate communication devices under the control. A plurality of slave satellite communication earth stations, which are lower-level communication devices that communicate with the satellite access controller through the satellite line, and a status monitoring device that transmits the status of the satellite line as status notification and is transmitted from the satellite network control device and managed as status information. When the satellite access controller detects a satellite link failure of a child satellite communication earth station in a layered network system, the satellite network controller notifies the status monitor of the satellite link failure from the information on past satellite link establishment status in the satellite network controller. It has a function to determine whether or not to do.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

In FIG. 1 showing the configuration of a hierarchical network system according to one embodiment of the present invention, reference numeral 1 denotes a satellite network controller in a central satellite communication earth station, 2 denotes a satellite access controller group under the satellite network controller, and 3 denotes a satellite access controller. Child satellite communication earth station group under the satellite access controller,
4 is a status monitoring device for performing status management, 5 is a LAN connecting the satellite network control device 1, the status monitoring device 4 and the satellite access controller 2, and 6 is a connection between the satellite access controller 2 and the child satellite communication earth station 3. Indicates a satellite link. Each satellite access controller houses a computer, and each satellite communication earth station 3 houses a terminal for communicating with the computer.

Referring to FIGS. 1 and 2, when an operator (user) of the central satellite communication earth station inputs a change in the configuration of the satellite communication network, the satellite access controller 2 receives an instruction from the satellite network control device 1 and issues an instruction. A health check is performed between the subordinate satellite communication earth station 3 and the subordinate satellite communication earth station 3 through a satellite line 6 in a polling format. When a response to the health check is not returned by TDMA, a satellite line failure is detected. The satellite access controller 2 notifies the station ID number as information of the child satellite communication earth station 3 which has detected the satellite link failure. The satellite network control device 1 uses the station ID number notified by the satellite line establishment determination processing (step S21 in FIG. 2) to store past satellites of each satellite communication earth station 3 as internal data in a database (not shown) as internal data. The station ID number notified from the line establishment information is searched to determine the establishment state of the satellite line. If you determine that no satellite link has been established in the past,
In other words, if the configuration information of the satellite network control device 1 exists but the child satellite communication earth station does not physically exist (this occurs when the configuration information of the satellite communication network is created, and when the configuration information is changed by the operator). Occurs), No
The status information of the failure is discarded. Conversely, if the satellite link has been established in the past, the process proceeds to Yes and the status data of the failure is transmitted to the status monitoring device 4 by the status data transmission process to the status monitoring device 4 (step S22 in FIG. 2). The status is reflected. The satellite link establishment information is updated when the satellite access controller 2 notifies the satellite link establishment information when the satellite communication earth station 3 and the satellite link 6 are established. Proceeds to Yes in the line establishment determination processing, and the status is managed.

[0009]

As described above, according to the present invention, in a hierarchical network system, a satellite network controller has satellite link establishment information between a satellite access controller and a sub-satellite communication earth station under the control of the satellite access controller. Unnecessary status management of the child satellite communication earth station that is present in the configuration information of the communication network but is not physically present can be discarded, improving the processing speed of the system and connecting the line to the status monitoring device. The usage rate can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hierarchical network system according to an embodiment of the present invention.

FIG. 2 shows a status update processing flow in one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 satellite network control device 2 satellite access controller 3 satellite communication earth station 4 status monitoring device 5 LAN 6 satellite line

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-23237 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04B 7/14-7/22 H04L 12 / 28-12/50

Claims (2)

(57) [Claims] 1. A satellite network controller for changing configuration information of a satellite communication network, a plurality of satellite access controllers located under the satellite network controller, and communication with one of the satellite access controllers through a satellite line. A plurality of slave satellite communication earth stations under the control of the satellite network controller, and a status in which a change in status information indicating a state of the satellite link between the satellite access controller and the slave satellite communication earth station is transmitted from the satellite network control device and managed. A monitoring device, wherein the status monitoring device is present in the configuration information possessed by the satellite network control device but is determined to be the slave satellite communication earth station in which the satellite link has never been established in the past. Not transmitting the status information to the network System status management method. 2. The status management method according to claim 1, wherein said satellite network control device, said satellite access controller and said status monitoring device are arranged in a central satellite earth station.