KR0120720B1 - Duplicated common bus repeat circuit of lan and method thereof - Google Patents

Abstract

The modulator using for reverse direction link of CDMA mobile telecommunication system performs the demodulation process with a contradiction ratio. It includes a number of Hadamard correlator group(1) receiving input signal,, a calculator(2) calculating the contradiction ratio with outputs of the correlator group, a sequence pair comparator(3) processing inputs coming from one input group receiving N number of outputs of the correlators and another input group receiving N number of outputs of the calculator and sending the processed results back to the calculator, and a signal power estimator(4) providing output to the calculator.

Description

Redundant shared bus relay circuit of local area network and its method

1 is a block diagram illustrating the configuration of a local area network using a conventional shared bus as a transmission medium.

2 is a block diagram of a redundant shared bus relay circuit of a local area network according to the present invention.

3 is a diagram illustrating a shared bus configuration of a bus separation operation mode when the redundant shared bus is relayed in FIG.

4 is a diagram illustrating a shared bus configuration of a bus separation operation mode when the redundant shared bus is relayed in FIG.

* Explanation of symbols for main parts of the drawings

10,20: bus control unit 30: bus separation / relay unit

31 bus separation means 32 bus relay means

11: bus relay control signal 40,50: shared bus

60: communication channel n1-nN-n2N: matching node

The present invention relates to a redundant shared bus relay circuit of a local area network and a method thereof, and more particularly, to construct a redundant shared bus in a local area network having a shared bus structure and to use a bus separation / relay means for operating the redundant shared bus. By increasing the bus operation efficiency and reliability of the bus failure of the local area network by separating or expanding the redundant shared bus, the short distance that can guarantee communication through the other shared bus in the case of one shared bus failure of the redundant shared bus. The present invention relates to a redundant shared bus relay circuit of a communication network and a method thereof. In a local area network using a shared bus, a plurality of matching nodes (n1 to nN), which are shared bus matching devices, are connected in parallel to a communication network in the form of a single shared bus 40 as shown in FIG. A plurality of stations (s1 to sN) are connected to each other so as to perform a message transmission / reception function through the shared bus 40, and to provide a control signal for operating the shared bus and to monitor the failure of the shared bus. The bus control unit 10 is provided. In the conventional local area network of such a configuration, a bus control unit 10 for bus operation and matching nodes n1 to nN, which are a plurality of shared bus matching devices, are connected to a communication network in the form of a single shared bus 40, and the bus control unit 10 is connected. By the control and monitoring signal of), multiple stations (s1 ~ sN) connected to each matching node perform message transmission / reception function through a single shared bus. If a connection occurs, a failure in any one bus matching device connected to the shared bus may cause a failure of the entire shared bus. Therefore, all bus matching nodes connected to the shared bus cannot operate. It became impossible.

The present invention has been made to solve the above problems, and an object of the present invention is to configure a shared bus in redundancy and operate the split or shared bus separated / extended by bus separation / relay means controlled by respective shared bus control means. It is to provide a redundant shared bus relay circuit of a local area network that enables communication by using another shared bus when a failure occurs in one shared bus.

Another object of the present invention is to configure a shared bus in redundancy and share the redundant shared bus into a shared bus in an operational state and a standby state by bus separation / relay means controlled by respective shared bus control means. The present invention provides a redundant shared bus relay method of a local area network that enables communication using a different shared bus when a failure occurs in a bus.

It is still another object of the present invention to configure the shared bus in redundancy and to operate all of the redundant shared buses as one shared bus extended by putting all of them into an operational state by bus separation / relay means controlled by respective bus control means. The present invention provides a redundant shared bus relay method of a local area network that can expand the number of matching nodes.

A feature of the redundant shared bus relay circuit of a local area network according to the present invention for achieving the above object is that the first shared bus and the second shared bus having a dual structure as a transmission medium for communication, separate or A first bus control means and a second bus control means for providing a bus relay control signal for expansion and operation and communicating with a bus control unit communication channel connected to each other and connected to a redundant shared bus to monitor a shared bus failure; And a bus separation / relay means for connecting the first shared bus and the second shared bus and relaying a bus signal by the bus relay control signal.

A feature of the relay method of the redundant shared bus of the local area network according to the present invention for achieving the above object is to control the bus separation / relay means by the bus relay control signal of the shared bus control means respectively connected to the redundant shared bus The bus separation / relay means is used to break down the shared bus of one shared bus or divide the redundant shared bus that accommodates 2N matching nodes into two shared buses that accommodate each N matching nodes. It acts as a separating means to separate a duplicated shared bus.

A feature of the redundant shared bus relay method of a local area network according to the present invention for achieving another object as described above is to control the bus separation / relay means by the bus relay control signal of the shared bus control means connected to the redundant shared bus, respectively In order to operate the redundant shared buses accommodating 2N matching nodes in the operation mode while operating in the operation / standby mode when a failure occurs, the bus separation / relay means are operated as bus relay means to expand the redundant shared buses.

Hereinafter, a preferred embodiment of a redundant shared bus relay circuit and a method of a local area network according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a redundant shared bus relay circuit of a local area network according to the present invention. As shown in the drawing, a first shared bus 40 and a second shared bus 50 having a redundant structure as a transmission medium for communication are shown in FIG. And a plurality of matching nodes (n1 to nN), which are shared bus matching devices respectively connected to the redundant shared buses 40 and 50, and a bus required to separate or expand the redundant shared buses 40 and 50. The first bus control unit 10 and the second bus control unit 20 which communicate with the bus control unit communication channel 60 connected to each other in order to provide the relay control signal 11 to the bus separation / relay means and to monitor the failure of the shared bus. ) And a bus separation / relay unit 30 which connects the first shared bus 40 and the second shared bus 50 and relays a bus signal by the bus relay control signal 11. desirable.

3 is a bus separation operation mode in a redundant shared bus relaying method of a local area network according to the present invention, and as shown, a first bus controller 10 and a second bus controller 20 connected to the redundant shared bus, respectively, as shown in FIG. The bus splitter / relay unit 30 is controlled by the bus relay control signal 11 of the shared bus 40 or 50 to which one of the shared buses fails, or 2N (where N is redundant Two redundant shared buses 40 and 50 each for accommodating the matching nodes (n1 to n2N) of the number of matching nodes connected to one shared bus among the shared buses. The bus separation / relay unit 30 is operated as a bus separation means 31 to separate the duplicated shared buses when each of them is divided into two shared buses.

4 is a diagram illustrating a bus extension mode in a redundant shared bus relaying method of a local area network according to the present invention. As shown in FIG. 4, a first control bus unit 10 and a second control bus unit 20 connected to a redundant shared bus are respectively shown. The bus splitter / relay unit 30 is controlled by the bus relay control signal 11 to operate the redundant shared buses 40 and 50 that accommodate 2N cutting nodes n1 to n2N in the operation mode. When a failure occurs in operation / standby mode, the bus separation / relay unit 30 is operated as a bus relay means 32, indicating that the redundant shared bus is expanded.

Referring to the configuration as described above will be described the operation of the redundant shared bus relay circuit of the local area network according to the present invention and the redundant operation of the shared bus as follows.

Referring to FIG. 3 and FIG. 4, the overall bus disconnection operation and the bus relaying operation are shown in which the first bus control unit 10 and the second bus control unit 20 connected to the redundant shared buses 40 and 50 respectively operate. Oh, there are two operating methods in the standby state. The bus control unit in the operating state monitors and controls the state of the shared bus and operates the two shared buses as one shared bus. The bus controller in the standby state performs only the function of monitoring the status of the shared bus.

The first bus controller 10 and the second bus controller 20 determine which one is to be in an operating state or a standby state by exchanging state information with each other via the bus control unit communication channel 60. The bus controller informs the other bus controller of its own operation state through the bus controller communication channel 60, and allows the first shared bus 10 and the second shared bus 20 to operate as one bus. The operation of the bus disconnection / relay unit 30 is controlled through the control signal 11.

If a failure occurs in the first shared bus 10 or the second shared bus 20, the bus may be relayed to the bus separation / relay unit 30 to separate the first shared bus 10 and the second shared bus 20. Sending the sub-control signal 11, if the failure of the shared bus belonging to the bus control unit operating in the operating state to send the bus failure information to the bus control unit of the standby state to independently operate the shared bus to which it belongs. Therefore, the bus controller in the standby state changes its operation mode to the operating state and monitors and controls the shared bus to which it belongs.

When the shared bus in the fault state is restored, the bus control unit of the restored shared bus informs the counterpart bus control unit by using the bus control unit communication channel 60, and the bus controller in operation operates the bus so that the shared bus can be extended and operated. The separation / relay unit 30 is operated to operate normally with one shared bus.

Shared bus redundancy is connected to each shared bus 40 and 50 as shown in FIG. 4, so that the bus control unit 10 or 20 for detecting the shared bus controls the bus separation / relay unit 30 so that the bus relay unit 32 can be used. 2 shared buses 40 and 50 are connected to each other through the bus separation / relay unit 30 so as to accommodate the 2N matching nodes n to n2N. When all 50) are operated in the operation mode and at the same time the operation is to be divided into operation / standby mode when the bus separation / relay unit 30 is operated as the bus relay means 32 to expand the redundant shared bus .

Therefore, each bus control unit 10, 20 is appropriately controlled according to the operation method of selectively controlling the bus separation / relay unit 30 as the bus separation means 32 to realize shared bus redundancy, reliability of shared bus and shared bus. Extending the number of matching nodes connected to the two bus controllers, the two bus controllers operate in the active / standby state, monitor the shared bus, and exchange information about the bus state in order to operate the shared bus.

As described above, the operation mode of the shared bus is a bus operation mode that is independent of the bus extension mode in which the first shared bus 40 and the second shared bus 50 are connected to each other and are independently shared by each shared bus. When the first bus controller 10 and the second bus controller 20 operate in the operating / standby state when the first bus controller 10 operates in the bus operating mode, the first bus controller 10 operates in the operating state. In this case, the bus control unit operates to allow the first shared bus 40 and the second shared bus 50 to operate as one bus.

If any shared bus fails, the bus controller controls the separate bus to separate the bus. If the shared bus fails, the other bus controller generates a signal to control the shared bus independently. It can be disconnected from normal communication.

In the bus separation operation mode of the redundant shared bus, in case of failure of one shared bus of the redundant shared bus or to share a shared bus accommodating 2N matching nodes, two shared buses accommodating each of the N matching nodes are divided. When performing the bus separation means 31 for the bus separation / relay unit 30 can be separated and operated two shared buses.

In the bus extension operation mode of the redundant shared bus, when the shared bus accommodating N matching nodes is configured to be redundant, the two shared buses are operated without dividing the shared bus in the operation / standby mode for redundancy. By operating in mode and dividing into operation / standby mode in case of failure, the bus utilization of the entire shared bus can be maximized, and 2N matching nodes can be accommodated on the shared bus that can accommodate N matching nodes.

As described above, according to the present invention, a redundant shared bus relay circuit of a local area network and an operation method thereof have an electronic switching system having a distributed processing control structure requiring real time or high reliability and high utilization while using a shared bus as a transmission medium. 2N matching nodes on a shared bus that can accommodate N matching nodes as well as maximize the utilization of the buses of the entire shared bus, as well as high utilization in operations such as interprocessor communication networks and regionally narrow distance communication networks of communication systems. Because it can accommodate, it has the effect of solving the limitation of the number of matching nodes that can be accommodated in the shared bus.

Claims (3)

As a transmission medium for communication, it provides a dual relay shared control bus for controlling the first shared bus and the second shared bus and the redundant shared bus, and monitors the failure of the shared bus. A first bus control means and a second bus control means connected to a bus and communicating with each other via a bus control unit communication channel connected to each other, and the first shared bus and the second shared bus are connected to each other by a bus relay control signal. Redundant shared bus relay circuit of a local area network, characterized in that the bus separation / relay means for relaying signals. A shared bus comprising a shared bus in a redundant configuration and a shared bus control section for monitoring a shared bus and a bus separation relay means for controlling a shared bus signal, the bus relay section of the shared bus control section respectively connected to the redundant shared bus Control bus separation / relay means with a control signal, which causes a failure of any shared bus among the redundant shared buses or two shared buses that accommodate the number of N matching nodes in a redundant shared bus that accommodates 2N matching nodes. A redundant shared bus relay method of a local area network, characterized in that to separate the duplicated shared bus by operating the bus separation / relay means as a bus separation means for each divided operation. A shared bus comprising a shared bus in redundancy and provided with a shared bus control unit for monitoring a shared bus and a bus separation relay means for controlling a shared bus signal, wherein the shared bus control unit is connected to a redundant shared bus. The bus separation / relay means is operated as a bus relay means to control the bus separation / control means with the control signal and operate the redundant shared buses accommodating 2N matching nodes in the operation mode while dividing the operation / standby mode in the event of a failure. Redundant shared bus relay method of a local area network, characterized in that to extend the redundant shared bus.