KR0155331B1 - Interconnection network manager in cdma mobile system - Google Patents

Abstract

The present invention relates to an interconnection network management apparatus in a mobile communication system, wherein the interconnection network management apparatus is capable of operating a processor supporting an integrated multi-protocol in charge of function processing in the network management apparatus and a network manager. ROM, which stores programs and data, RAM that can read / write data during program operation, fault signal processing unit input from a plurality of nodes that are network components, two HDLC communication matching units, and HDLC communication link. Failure detection unit, frame synchronization signal generation and basic clock generator for bus arbitration for multiple nodes using the shared bus, and failure detection unit for D-bus, a shared bus for data exchange in the communication network And keeps the operation of the components constituting the management device in the event of a power reset and manual switch reset. A real time between the reset circuit, a clock generation and division circuit for supplying the necessary clock signal inside the management device, an address decoder for generating a selection signal for accessing or controlling a device other than the processor, and a redundant management device It is composed of a redundant control unit that can be switched over and provides maintenance and management functions including failure handling and management functions for various components constituting the communication network and interconnection. The reliability of the communication network is improved.

Description

Interconnection network management device of mobile communication system

1 is a block diagram of an interconnection network between a control station and a base station in a mobile communication system to which the present invention is applied.

2 is a logical diagram of the unit interconnection network of FIG.

3 is a detailed block diagram of the unit interconnection network of FIG.

4 is a detailed configuration diagram of a communication network management apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

300, 301: communication network management device 305: bus repeater

400: multiprotocol processor 401: U-link matching unit

404: Am-bus matching unit 407: U-link / Am-bus matching unit

409: De-bus constant voltage unit 411: Frame synchronization signal / control clock generator

412: shared bus failure detection unit 415: node failure detection unit

418: interrupt processing unit 419: memory

423: redundancy control unit 426: address decoder

429: oscillator 430: frequency divider circuit

The present invention relates to an interconnection network management device in a mobile communication system, and more particularly, to a network management for interconnection communication networks for exchanging messages between control stations and control devices or traffic processing devices in a base station. An interconnect communication network management apparatus of a mobile communication system capable of performing an efficient network management function for communication network components by implementing the device.

In general, in an interconnection communication network between a control station of a mobile communication system and a base station, a relay line link between an interconnection network of a control station and an interconnection network of a base station that interconnects the unit networks of the unit communication network and enables message distribution. The exchange of messages takes place.

In addition, messages are exchanged between the control station and control devices or traffic processing devices within the base station interconnection network.

However, the conventional network management apparatus for exchanging messages between the control apparatus and the traffic processing apparatuses as described above does not properly perform failure processing and status management functions for each component constituting the communication network. Management was made, there was a problem that the reliability of the interconnection network is degraded.

An object of the present invention for solving the above problems, the interconnection communication network of a mobile communication system that can implement a reliable communication network by providing an efficient network management function for each component constituting the interconnection communication network of the mobile communication system It is to provide a management device.

A feature of the present invention for achieving the above object is, in the interconnection communication network management device of the mobile communication system, the communication network management device is a processor supporting an integrated multi-protocol in charge of processing the functions inside the network management device A ROM for storing programs and data for the network manager to operate, a RAM capable of reading / writing data during the program operation, a fault signal processing unit input from a plurality of nodes that constitute the network, and two HDLCs. Communication matching unit, HDLC communication link failure detection unit, frame synchronization signal generation and basic clock generation unit for bus arbitration for multiple nodes using the shared bus, and shared bus for data exchange in the communication network To configure the fault detection unit for the D-bus A reset circuit for maintaining their operation in synchronization, a clock generation and division circuit for supplying a clock signal required inside the management device, an address decoder for generating a selection signal to access or control a device other than a processor, and duplication It is configured to include a redundant control unit implemented to enable real-time switching between the management devices.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an interconnection network between a control station and a base station of a mobile communication system.

As shown in FIG. 1, the mobile communication system includes a plurality of base stations 106 to 111 according to the capacity of the control station 100 and the mobile subscriber.

The control station 100 is composed of interconnection networks (101-102) which interconnect the unit networks of the unit communication networks (103-105) to enable efficient configuration of the expansion and contraction of the system according to the capacity and enables message distribution. do.

The control station interconnection networks 101-102 and the base station interconnection networks are interconnected by relay line links 112-117 to efficiently support telecommunications.

2 is a view showing the configuration of one unit communication network constituting the mobile communication network of FIG. 1, wherein the unit communication network is a communication network management device 200 for node maintenance and a plurality of message exchange functions. Nodes 201 to 213, and a U-link (214 to 216) which is a physical message transmission link between the control device in the communication network and the node.

3 is a diagram showing a detailed configuration of the unit communication network of FIG.

The function of the network management apparatus according to the present invention through the peripheral configuration of the network management apparatus of FIG. 3 will be described in detail as follows.

In a unit communication network, communication network management apparatuses 300 and 301 are duplicated through a duplication control channel 302, and each of the communication network management apparatuses 300 and 3010 mutually communicates two shared buses 303 and 304 for message exchange. It generates a control signal for the bus repeater 305 to connect.

The network management apparatus 300 and 301 and nodes are connected to an M-bus 307 which is a maintenance bus, and the network management apparatus 300 and 301 is a node maintenance bus. Node state management, fault management, configuration management, and the like are performed through 307.

At this time, the communication between the network management device (300, 301) and a plurality of nodes operates the bus in accordance with the master-slave relationship that responds only when the network management device makes a message request to the node, the data on the shared shared bus for maintenance There is no worry of collision.

The network management apparatus 300, 301 is connected to a node through the U-link (309, 310), which is a physical link between nodes for message exchange with other control devices (not shown).

4 is a detailed configuration diagram of the communication network management apparatus according to the present invention. Referring to each configuration block, each function will be described as follows.

The multiprotocol processor 400, which is a central control unit of the communication network management device, uses the MC68302 as a core for executing a program for node management and network maintenance. This is based on the MC68000 CPU and a serial channel that supports high-speed HDLC protocol communication. Two serial channels to support two and RS-232C serial communication and one UART channel to support RS-232C serial communication are provided and I / O ports for various interrupt processing, input / output control, and multiplex integrated to implement various timer functions Protocol processor.

The multiprotocol processor 400 transmits and receives an HDLC frame to a node (not shown) connected through U-links 309 and 310, which are physical links of FIG. ) Is connected to the matching part.

At this time, the multi-protocol processor 400 is connected to the U-link matching unit 401 by a connection line 402, the U-links (309, 310) is a link to the node, in particular, the transmission reliability It is a physical link with RS-422 electrical characteristics to increase the

In addition, the multiprotocol processor 400 is connected to an M-bus matching unit 404 and an internal connection line 405 to perform maintenance information exchange with nodes. The matching section 404 is connected to the amp bus 308.

At this time, the message type transmitted and received follows the HDLC frame type.

The U-link / M-bus fault detection unit 407 monitors the data frame and the received synchronous clock received through the U-link matching unit 401 and the M-bus matching unit 404 to interrupt in case of abnormality. ).

The D-bus matching unit 409 has a matching function with shared buses 303 and 304 for exchanging messages between nodes, and the D-bus matching unit 409 has a matching function for bus occupancy of a plurality of nodes through the D-bus matching unit 409. The frame synchronization signal necessary for the arbitration function generated by the frame synchronization signal / control clock generator 411 and a clock for controlling the frame synchronization signal are transmitted.

The shared bus failure detection unit 412 monitors the D-bus signal 413 received from the D-bus matching unit 409 and generates a failure interrupt 414 when a failure occurs.

The node failure detection unit 415 detects a failure of the node unit input from the node unit, a hernia of the node unit, and the like, and generates an interrupt 417 when the failure occurs.

The interrupt processor 418 performs an interrupt processing function for the U-link / M-bus failure, the shared bus failure, and the failure of the node unit.

The memory 419 is a portion in which the multi-protocol processor 400 stores and reads programs and data for performing a network maintenance function. The memory 419 includes a ROM and an SRAM.

MMC matching unit 420 is a matching unit for RS-232C communication between the user and the network management device is connected to the direct UART channel of the multi-protocol processor (422) has a speed of 9600bps, mainly used for program debugger and program downloading. do.

The communication network management apparatus made as described above is configured with redundancy through the redundancy control channel 302.

The redundancy control unit 423 is connected to the input / output control port 425 of the multiprotocol processor 400, and the redundancy control unit 423 detects a power failure supplied to the other party network management device and a function failure of the other party network management device itself. It is monitored and operated in mutual operation state or standby mode.

The address decoder 426 is connected to the internal bus 427 as an element selection controller that enables access to internal elements constituting the network management apparatus.

The reset circuit 428 is used to synchronize the start operation synchronization inside the network management device and is connected to all the devices.

The oscillator 429 and the divider 430 provide a system clock for the operation of the multiprotocol processor 400 and a transmission synchronization clock for HDLC and RS-232C communication.

The D-bus relay control unit 431 is a control unit for controlling the bus repeater of FIG. 3 and controls two shared buses 306 and 307 by separately operating or connecting and expanding each other.

As described above, the present invention, which operates in the above-described configuration and method, implements a network management device for an internal interconnection communication network in charge of a message exchange function between a control device and a traffic processing device of a mobile communication system. By providing maintenance functions, including fault handling and management functions for various components, and status management functions, network management is efficiently performed and reliability of interconnected communication networks is improved.

Claims (2)

An interconnection communication network management device for exchanging messages between a control device and a traffic processing device of a mobile communication system, the interconnection network management device comprising: an integrated multiprotocol processor that is responsible for processing functions in the network management device; A program that stores programs and data so that the program can be stored there; RAM capable of reading / writing data during program operation; A fault signal processor and a HDLC communication link fault detector for processing fault signals inputted from a plurality of nodes which are communication network components; An HDLC communication matching unit for message transmission between nodes; A frame synchronization signal generation and a basic clock generator for bus arbitration for a plurality of nodes using a shared bus; A fault detection unit for a shared bus for data exchange in a communication network; A reset circuit for maintaining operation synchronization of the elements constituting the management apparatus in the event of a power reset and a manual switch reset request; A clock generation and division circuit for supplying a clock signal required inside the management device; An address decoder for generating a selection signal to access or control elements other than a processor; An interconnection communication network management apparatus of a mobile communication system, characterized by comprising a redundant control unit implemented to enable real-time switching between the redundant management apparatus. In the data transmission between the control station of the mobile communication system and the interconnection network of the base station, the unit communication network of each control station and the base station includes: a plurality of nodes; A communication network management device which is duplicated through a duplication control line; A maintenance bus for maintenance communication between the plurality of nodes and the communication network management apparatus; Two shared buses for exchanging messages between the nodes; Interconnect communication network management device of the mobile communication system, characterized in that it comprises a bus repeater for performing a relay function for the shared bus.