KR100912819B1 - Protection apparatus and method of MSxP at ATCA platform based Optical Transport HierarchyOTH - Google Patents

Abstract

The present invention relates to an apparatus and method for protecting a multimedia service system of an OCA (Optical Transport Hierarchy) -based Advanced Telecomm Computing Architecture (ATCA) platform, which is protected through a base interface in an ATCA (Advanced Telecomm Computing Architecture) platform. The present invention relates to an apparatus and a method for providing a), a protection switching function, and a bandwidth extension method based on the ATCA platform.

The protection switching control device according to the present invention for controlling the protection function through the base interface in the ATCA platform (Advanced Telecomm Computing Architecture) to achieve the above technical problem, a function for detecting and switching the working / protection status signal driven from the switch device Do it.

In addition, based on the ATCA platform, the transmission switching function and the bandwidth expansion method provide transmission capacity up to 150G to accommodate 40G input / output (I / O) devices, optical transport hierarchy (OTH) client devices, and OTH transport devices). We propose a system backplane device.

OTH, ATCA, Switch Protection, Redundancy, Backplane

Description

[Protection apparatus and method of MSxP at ATCA platform based Optical Transport Hierarchy (OTH)}

The present invention relates to an apparatus and method for protecting an optical transport hierarchy (OTH) based advanced telecomm computing architecture (ATCA) multimedia service system.

A protection device and a protection method having a 1 + 1 redundancy function for a multimedia service system (MSxP) in an ATCA (Optical Transport Hierarchy) based ATCA platform are proposed.

In addition, the present invention is to accommodate the 40G-class OTH transmitter that can handle the enormous traffic of the next generation Internet communication network while extending the switching capacity using the area 3 left as the user area in the Advanced Telecomm Architecture Architecture (ATCA) platform specification An ATCA (Advanced Telecomm Computing Architecture) backplane device.

The present invention is derived from the research conducted as part of the IT source technology development project of the Ministry of Information and Communication [Task Management No .: 2006-S-060-02, Title: OTG-based 40G multi-service transmission technology development].

Among the sectors of communication, the biggest victim of the collapse of the Internet bubble, which began in early 2000, is the communications equipment industry. Telecommunications equipment companies lost trillions of dollars in market value and had to restructure nearly one million people.

Traditionally, telecommunications equipment companies have designed their own semiconductors and developed their own hardware devices, operating systems and application software based on them and supplied them to telecommunications carriers.

These damages made it necessary to consider other methods.

In particular, since the network equipment currently operated by each telecommunications equipment provider was a unique product of the telecommunications equipment provider, this limitation of compatibility allows telecommunications equipment providers to lower the initial equipment purchase price through competitive bidding. The result is an increase in costs as well as operational difficulties because of the need to manage a variety of different products.

To overcome this problem, the telecommunications industry wants to introduce the efficiencies gained as the computer industry previously transformed its vertically-supply supply chain into a horizontal cooperative model by increasing interoperability through standardization. A typical example is ATCA (Advanced Telecomm). Computing Architecture) platform.

The Advanced Telecomm Computing Architecture (ATCA) platform specification is one of the future platform standards for integrating computers and communications equipment. It is an industry-standard specification for blade-based computer boards suitable for telecommunications equipment and chassis containing them.

The PCI Industrial Computer Manufactures Group (PICMG), which has more than 800 members, has established the latest Tongcom Convergence Architecture (ATCA) standard, especially under the leadership of Intel and Motorola, including network equipment manufacturers, computer manufacturers, application computer platform hardware and software developers. More than one company has participated in creating the ATCA standard.

ATCA standard specification consists of PICMG 3.0 specification which defines mechanical characteristics, power, system management function, and communication connection specification of ATCA and PICMG 3.1 ~ PICMG 3.4 which defines various types of communication connection specifications between boards.

The ATCA standard provides computing power and network processing capabilities not available in the existing CompactPCI standard or other proprietary systems, and meets quality standards such as NEBS, ETSI, and 99.999% availability required for carrier-class communications equipment.

The ATCA standard is applicable to network equipment in all layers of the access layer, transport layer, control and application layer of the broadband integrated network (BcN) that provides communication, internet, and broadcasting. Equipment is also expected to spread.

In the Optical Transport Network (OTN) Linear Protection Specification (ITU-T G.873.1), protection defines five types, but can only be considered for 1 + 1 redundancy types in practice.

The reason is that in 1: N protection, since it usually has an idle protection line, it can be used to carry other traffic.

Although much more capacitive than 1 + 1, it is limited to several optical fibers or wavelengths to form a 1: N protection system on the same cable and is not viable for cable cuts.

Therefore, there is an improvement in the internal system availability, but 1: N protection is not a practical application without network recovery.

1 + 1 bidirectional switching always requires a protection channel. Therefore, the switch having the 1 + 1 protection function of the present invention is regarded as the same as the switch duplex structure based on ATCA (Advanced Telecomm Computing Architecture).

OTH (Optical Transport Hierarchy) is a next-generation optical transmission scheme that is an upper layer of Synchronous Digital Hierarchy (SDH) and a lower layer of Wavelength Division Multiplexing (WDM).

In addition to traditional time division multiplexing (TDM) -based data (SDH / SONET) and packet data (GbE, 10GbE, etc.) and storage data (ESCON, FC, etc.) while ensuring a richer maintenance information delivery and transmission performance than Synchronous Digital Hierarchy Various signals such as can be transmitted transparently. Transmission signal is defined as OTU1 of 2.5G class, OTU2 of 10G class and OTU3 of 40G class.

The present invention relates to switching device protection in an Advanced Telecom Computing Architecture (ATCA) platform. In particular, the switching device is provided through a base interface of a dual star topology centered on a dual switching device in an Advanced Telecom Computing Architecture (ATCA) platform. An apparatus and a method for controlling redundancy are proposed.

The clock status is being checked when protection is switched. The protection module is designed to always be in phase with the clock of the working module.

Hot / swap can be implemented by reducing the port control time between working / protections while the redundant clock source is ready to provide the same phase.

The protection port should be open at the same time the working output port is closed. Control of the output port is implemented in the system. This is a method of selecting a clock from a target device receiving a working signal and receiving a clock. As a result, the system implements the hot-swap function, which ensures stable operation even in a redundant switchover.

ATCA-based platforms can provide 10G per I / O card when providing a differential signal of 2.5G per channel when using a fabric interface, and 120G system switching capacity with 12 10G I / O cards per ATCA platform. Capacity is configurable and 40G per card is unacceptable.

In order to provide a sufficient bandwidth without the obstacles to the communication network in the rapidly increasing Internet traffic worldwide, a large amount of optical transmission technology is required. Currently, domestic technology is based on the 10G-class loss rate, so the transmission rate should be increased to 40G in order to realize high-capacity transmission in the future. In other words, it is necessary to accept various service traffic (2.5G / 10G SDH, GbE / 10GbE, FC, etc.) as a dependent signal and multiplex it with 40G signals instead of 10G.

The present invention relates to an apparatus and method for protecting a multimedia service system of an OCA-based Advanced Telecomm Computing Architecture (ATCA) platform, and to provide an apparatus and method for providing protection through a base interface based on an ATCA platform. do.

In addition, the ATCA platform is designed to be reconfigured to accommodate 40G I / O devices (OTH client devices, OTH transmitters) to provide up to 150G switching capacity.

An embodiment of the protection apparatus of the multimedia service system of the OTH-based ATCA platform according to the present invention for the above technical problem, analysis of the actual / hernia or failure generation control signal of the optical transport hierarchy (OTH) switch and MAC (Media Access) A device controller for decoding the address signal; A protective switching controller for performing a switching to a protective OTH switch when a seal / dismount or a failure of the working optical transport hierarchy switch is generated and generating a selection control signal for switching to the protection OTH switch; And auto-negotiate with an input / output device (I / O device) for transmitting and receiving an OTH data frame connected to a base interface in response to a selection control signal for switching to the protection OTH switch. And an Ethernet switch configured to switch the OTH data frame input through a base interface to a port corresponding to a destination Media Access (MAC) address.

An embodiment of the protection method of the multimedia service system of the OTH-based ATCA platform according to the present invention for the above technical problem, an analysis step of analyzing the actual / hernia or failure generation control signal of a working OTH (Optical Transport Hierarchy) switch; A switching step of performing a switching to a protection optical transport hierarchy (OTH) switch and generating a selection control signal for switching to the protection OTH switch when a sealing / dismount or failure of the working optical transport hierarchy (OTH) switch occurs; A link step of automatically negotiating and linking an input / output device (I / O device) for transmitting and receiving an OTH data frame connected to a base interface in response to a selection control signal for switching to the protection OTH switch; And a switching step of switching the OTH data frame input through the base interface to a port corresponding to a destination media access (MAC) address.

An embodiment of the multimedia service system of the OTH-based ATCA platform according to the present invention for the above technical problem, a plurality of input / output unit for transmitting and receiving OHT data frame; A framer for extracting a failure state of the OTH data frame; An OTH switch having a redundancy structure and rapidly switching the OTH data frame to a destination address port, comparing the fault state reported by the framer with a previously stored fault state, and extracting an unprocessed fault state; And a protection switching controller configured to interpret the unprocessed fault state signal of the OTH switch to perform the switching to the protection OTH switch.

The switch according to the present invention provides a clock in the form of a bus in accordance with the ATCA standard, thus providing a stable clock without checking and controlling various clock states, such as the clock switching of the conventional synchronous method, when switching the working / protection. By detecting the working / protection state of the base interface, the / O device has the protection function of the switch device and the protection switching device, which implements the protection function of the switch.

By designing ATCA switch device and I / O device based on ATCA platform, system reliability is guaranteed and interoperability between I / O cards can be ensured to respond to rapidly changing design environment.

As described above, according to the switch device and method according to the present invention for controlling redundancy through the base interface in the ATCA platform, the switching device is redundant or 1 + 1 protection redundancy by working / protection the base interface according to the redundancy state It provides redundancy and easily detects the redundancy status of the switch device by detecting the working / protection status of the redundant base interface.

The present invention can provide a switching device having a total of 180G duplex structure by adding 60G full duplex capacity by using three areas of the standardized ATCA standard, and furthermore, a 40G I / O device that enables high-speed traffic transmission. Two pieces can be mounted.

As a result, the present invention further improves scalability and reliability of the next-generation high-speed transmission system and ensures compatibility between high-speed I / O user interface boards, thereby enabling easy convergence to a fast-growing optical transmission network, thereby providing an excellent network interface effect.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings that can be easily implemented by those skilled in the art.

Advanced Telecomm Computing Architecture (ATCA) platform is designed by Intel Industrial Computing Manufactuerer Group (PICMG) 3.0 to design the system to realize hardware design and development period and low cost. It is a system appliance in response.

The Advanced Telecomm Computing Architecture (ATCA) platform is an international standard that provides device-to-device redundancy through a fabric interface and base interface in a redundant, dual-moulded topology for cost-effectively and efficiently developing communications systems.

In terms of telecom and network operators, new services and performance upgrades are easy and costs are greatly reduced with a single platform, and equipment makers have a clear role as chip vendors and system vendors on a single platform. Technology and price competitiveness will be obtained.

 FIG. 1 is a diagram illustrating a structure of a multimedia service system to be accommodated in an ATCA (Advanced Telecomm Computing Architecture) standard platform.

OTH based multimedia service system structure to be accommodated in ATCA (Advanced Telecomm Computing Architecture) platform.

The communication system is typically composed of a plurality of input / output (I / O) devices, system processors, OTH switching devices (hereinafter referred to as switches), and additional devices.

Referring to FIG. 1, the system processor apparatus 100 includes a system processor apparatus 100, a switch apparatus 101, a protective switching control apparatus 102, and a plurality of I / O apparatuses 103 and 104.

The protection switching controller 102 may include a protection switching controller 320 and a device controller using the Ethernet switch 330 of FIG. 2 to provide a redundant redundancy function among a plurality of I / O devices including a system processor device. 310 and the base interface connector 340.

The Advanced Telecomm Computing Architecture (ATCA) platform has a system processor device 100 and a plurality of I / O devices 103 and 104 interconnected with a switch device 101 and a protective switching control device 102 as shown in FIG. It has a structure.

The switch device 101 is a cross point switch that asynchronously switches an optical transport hierarchy (OTH) signal frame composed of 2.5G units, and performs a system continuous service by performing a high-speed signal frame switching function among several I / O devices. It has a working / protection structure.

The protection switching control device 320 of FIG. 1 interacts with the system processor device and has a redundancy function through an ATCA-based backplane for a plurality of I / O devices or switching devices, and the system processor device 100 is 32. The bit processor bus is used to perform system-wide maintenance functions and to control each function block that performs the functions required by the switch.

2 is a block diagram schematically showing an embodiment of a protection switching control device for controlling redundancy through a base interface in the Advanced Telecomm Architecture Architecture (ATCA) platform according to the present invention.

It is designed to operate Ethernet signal within 12 slots among 12 node slots without applying transformer that is responsible for frame transfer from Ethernet switch.

The protection switching controller includes a device controller 310, a protection switching controller 320, an Ethernet switch 330, and a base interface connector 340. These Ethernet signals connect to the backplane through the base interface connector 340 of the backboard.

The device controller 310 configures a circuit for a control signal, an address decoding signal, and the like required for each functional block of an optical transport hierarchy (OTH) unit switch.

The protection switching controller 320 is a redundancy control function that performs device switching due to device mounting and mounting failure between two switch devices.

This redundancy control unit generates a control signal for selecting one of two signals received by each line device.

The Ethernet switch 330 uses an Ethernet signal as a communication method for communicating with each device because a system processor for managing devices mounted in each slot is mounted in a switch device in the ATCA (Advanced Telecomm Computing Architecture) itself.

Therefore, it is equipped with Ethernet switch to communicate with up to 12 devices and the connection with each device adopts 10 / 100BASE-TX without using a transformer.

The Ethernet switch 330 has a node slot connection, an adjacent hub slot connection, an internal system processor connection of the hub slot, and a connection function with an operator terminal through the front part.

The Ethernet switch 330 generates a switch control signal according to the redundancy test result, performs a link connection by automatically negotiating with the devices connected to the base interface in response to the switch control signal, and inputs a data signal frame through the base interface. This function stops the switching operation by receiving the switch and switching to a port corresponding to the destination MAC (Media Access) address of the received frame or deactivating the base interface.

The base interface connector 340 is a device through which Ethernet signals are connected to the backplane. It is connected via the PICMG3.1 base interface of the backplane to accept these Ethernet signals.

3 illustrates a state of interconnection between each device configuring the system in the ATCA platform according to the present invention.

The switch device & system processor devices A 210 and B 211 are redundantly connected to each other on the fabric interface, and the switch device & system process devices A and B and the multiple solid I / O devices 214 are dual through the base interface. Connected with star full duplex.

The fabric interface signal consists of differential signals and has switching control for high speed traffic.

Meanwhile, the protection switching device included in the switch device & system processor device is connected to the dual star type's full duplex through the base interfaces a 212 and b 213.

Base interfaces a and b are connected to each other in a device such as a system processor and are connected to multiple I / Os through the base interface, respectively. The base interface signal is connected to the differential signal and has a redundant form. I / O devices are commonly connected via a base interface.

In addition, each of the redundant switch and system processor units is connected to a differential switching bus for protection switching and clock transfer.

4 is a diagram illustrating a system block diagram of redundancy control through a base interface in the ATCA platform according to the present invention.

This configuration is connected to the physical layer matching and device control unit 400 and each line device for generating and controlling the chip select signal required for physical layer matching with the external network and starting of each hardware device performing system functions. Protection for providing a switch unit and a system processor unit 410 for controlling it, a switch 420 for high-speed switching of signal frames, and an Ethernet switch for switching each Ethernet signal for managing each line device in the system processor with switch redundancy control. Switching control unit 430, fabric interface (440, 450) providing an interface using a switch between the backplane and the switch, the protective switching control unit and the base interface (460, 470) providing an interface using the backplane connector, the system processor and the protective switching control unit It consists of a clock generator 480 for providing a clock to.

The physical layer matching unit 400 performs a physical layer matching function on data from an external network and performs link state inspection with an external network.

The system processor unit 410 is a processor that is in charge of the overall maintenance function of the MSxP system and uses a 32-bit processor bus to control each function block that performs a function required by the OTH unit switch.

It provides a CLI (Craft Language Interface) interface through a Graphical User Interface (GUI) using high-speed Ethernet for debugging system software by storing software for system operation.

Within the switch, the system processor is booted by a power reset and forced reset by the operator. The system operating information such as memory for storing the boot system software (FROM), memory for operating the software (SD-RAM), and system configuration It is composed of memory (NV-RAM) which stores permanently. It also controls switches and Ethernet switches via the processor bus.

In addition, the Ethernet communication and the external interface configuration are connected to the operator terminal through 100M LAN (Local Area Network) through the system processor, hub slot and Ethernet communication to perform other switching functions through the system processor, and other node devices through the system processor. In order to communicate, it is communication with Ethernet switch and communication using serial port of system processor.

The switch 420 has a function of transmitting a signal frame to the destination transport network through the fabric interfaces A and B for traffic input from the physical layer matching unit of the external (subscriber) network with reference to FIG. 4.

The switch performs a function of switching signals input and output from twelve line devices. The switch performs multicast and broadcast functions as well as point-to-point connections.

Up to 12 line devices can be connected and the switch device and each line device and interface follow the "PICMG 3.1 Fabric Interface".

The switch provides a clock in the form of a bus to comply with the ATCA standard, and thus provides a stable clock without checking and controlling various clock states as in the synchronous clock switching when working / protection is switched.

At this time, the I / O device detects the working / protection state of the bus interface and takes the redundant state of the OTH switch device and the protective switching device.

The protection switching controller 430 uses an Ethernet signal as a communication method for communicating with each device for operation and fault management including a maintenance boss since a system processor for managing devices mounted in each slot in the ATCA self is mounted in a switch. .

Therefore, an Ethernet switch for communicating with up to 12 devices is mounted. At this time, the Ethernet switch unit uses a 10/100 base-T method that does not use a transformer for connection with each device.

These Ethernet signals are connected via the PICMG3.1 base interface of the backboard. The device controller is a programmable logic gate device for configuring the necessary logic between the processor and other chipsets.

The fabric interfaces 440 and 450 provide a 1 + 1 redundancy switch fabric connection between the switch & system processor and each I / O device, and the base interfaces 460 and 470 between the switch & system processor and each I / O device. Provides switch fabric connections with a single connection with no redundancy or switch fabric connections with 1 + 1 redundancy.

The clock generator 480 provides a clock in the form of a bus in accordance with the ATCA standard as a switch, and thus provides a stable clock without checking and controlling various clock states as in the case of switching clocks of a conventional synchronous method when switching a working / protection. . At this time, the I / O device detects the working / protection state of the redundant bus interface and thus can know the duplication state of the switch device and the protection switching device.

5 is a view showing a connection structure for the protection function according to the present invention.

The switch devices 510 and 520 are redundant and are switched when mounting or dismounting the switch device, when there is a transfer command from the operator, and when a failure in the device is detected.

When switching occurs in the switch device as shown in FIG. 5, the switch device generates select control signals 513 and 514 for switching, and in each line device, transfers the received signal generated from the working / protection switch device.

Control signals 513 and 514 for this switching occur in the switch device. The bridge of the working / protection line card functions to make one signal 531 into two (532,533) for transferring from each line device (530,540) to the switch device (510,520), and the selector is delivered from the switch device. The control signals 513 and 514 select one signal from the signals 534 and 535 respectively transmitted from the two switch devices.

The protection operation of the switch device is operated for switching when mounting or dismounting the switch device, forced switching by the operator's need, and switching automatically performed when a failure is detected in the switch device.

The switch protection operation is divided into three parts.

1) Switching due to device seal / hernia

The status switch (511, 521) for monitoring each other between the working switch and the protection switch is sent and received to check the status of the other's mounting.

For example, when the working switch is detached from the working switch by selecting the signal 531 of the working switch from the working selection control signal 531 and the protection selection control signal 541 in the line device, the protection switch detects this. The protection control signal is controlled through the backboard, allowing the line device to quickly switch within 50 ms by selecting the signal received from the Protection switch.

2) Operator changeover command

Operator changeover command is to perform transferover by giving transfer command to the switch through the GUI. In software switching, separate processors operate in two switch devices, so an operator GUI that operates by integrating them must be developed.

3) Automatic transfer that detects major malfunction in the device

When a major functional failure in the device is detected, automatic switching is a method of rapidly switching by transmitting a status signal to a counterpart device through a status signal when a corresponding switching requirement occurs.

It detects the status signal from the counterpart device and knows that a failure has occurred in the currently operating switch device. As the software judges the operation, switching occurs after a certain time has elapsed. Therefore, the time to stay in the fault state is longer than the transmission switching time within 50 ms. To this end, interoperability between the two processors operating in the redundant switch device must be achieved.

6 is a view showing a detailed structure of the device control unit 310 of the protective switching control device according to the present invention of FIG.

The system processor interface function unit 610 is a 16-bit parallel processor connection unit and generates a signal for operating an address decoding and a necessary register inside the device controller.

The bus converting unit 620 performs a function of converting a 32-bit processor bus to change the processor bus, and has an interface for serial control of the switch.

The chip select signal generation and buffering function unit 630 generates and stores a selection signal for switching. This signal generates a signal for knowing the seal and hernia status of each node slot through the backboard from the line card state, and a signal for transferring a change command signal in the future device changeover.

The switch interface function unit 640 has an interface for serial control with a multiplexed processor bus of the switch.

The physical layer control function unit 650 generates a processor connection signal and a reset signal of the Ethernet switch.

7 is a conceptual diagram of a multimedia service system protection of an OTH-based ATCA platform according to the present invention.

The framer 710 in the line card, which is the I / O card 700, extracts the fault state from the data frame coming through the external network, determines the source state according to the internal protocol, and transfers the state to the switch 720 (payload). And report the failure status), the switch compares the failure status reported by the I / O card and reports the unprocessed failure status to the protection switching controller 730. The protective switch controller determines the best switch device source, sets the switch device, and performs redundant switching accordingly.

8 is a flowchart illustrating a multimedia service system protection operation of an OTH based ATCA platform according to the present invention.

The framer in the I / O line card extracts the fault state from the data frame coming through the external network (S810), and determines the source state according to the internal protocol (S820).

 The payload and alarm / fault status are reported to the switch (S830).

The switch compares the failure state reported by the I / O line card (S840), and reports the unprocessed failure state to the protection switching controller 730 (S850).

The protection switch controller determines the best switch device source, sets the switch device, and performs redundant switching accordingly (S860).

9 is a conceptual structural diagram of 1 + 1 protection according to the present invention.

In the connection structure between the transceiver (XCVR) (910 ~ 940) as shown in the figure, the data signal is transmitted through the available line according to the fault location.

As an example of transmission, when a failure occurs in the Tx Working line of the transceiver A 910, it passes through the transceiver B 920 Tx protection line, and as a reception example, a failure occurs in the transceiver a (930) Rx Working line. In this case, the transceiver b 940 passes through the Rx protection line, thereby providing 1 + 1 redundancy between two systems in the network.

1 + 1 protection requires bidirectional protection.

FIG. 10 illustrates a backplane structure for accommodating a protection switching function and a maximum 180G system capacity based on the ATCA platform according to the present invention.

The ATCA backplane structure is divided into three areas: area 1 (100) is an area for performing ATCA platform management and power supply, and area 2 (200) is for high-speed data transfer and has a base interface 500 formed of a dual molding topology. And a fabric interface 400 that allows each slot to be directly connected to all other slots in order to exchange information between each slot.

Zone 3 300 does not currently define the connection structure in particular, and is an area reserved for arbitrary use by application for services required by a user. The ATCA platform with the ATCA backplane is typically a 14/16 slot physical structure consisting of a 12 slot I / O 600 and a 2 slot redundant switch 700, a self manager managing the platform, and network protection. Or it consists of a redundant structure to ensure the reliability of the system.

Specifically, the capacity is calculated as follows.

In the case of a dual star structure in 14 slots, if there are two switch devices, there are 12 node devices.

According to the ATCA specification, each node device has two ports capable of supporting Tx and Rx at 3.125 Gbp, respectively, and the fabric interface has four ports capable of supporting Tx and Rx at 3.125 Gbps, respectively. It is composed.

Therefore, it is possible to secure 6.250 Gbps using the base interface connection standard, and 12.5 Gbps can be secured using the connection standard of the fabric interface. The result is 12.5Gbps x 12 slots = 150Gbps when using only the fabric interface.

The present invention extends one more backplane to a standard backplane using a region 3 connector, so that one more fabric interface can be made in the region 3 region. In this case, two fabric interfaces can be provided in each node slot, adding an additional 30Gbps (2.5G x 12 slots), enabling a full 180G backplane configuration.

11 illustrates an ATCA backplane configuration according to the present invention.

For the purposes of the present invention, the backplane is newly designed by diverting the area 3 backside I / O access area to the switch fabric interface area.

Specifically, in order to expand the capacity of slots 7, 8 and 8, the Zone 3 rear I / O access area is used as the switch fabric interface area and 10G I / O devices are accommodated in 1 ~ 6 and 9 ~ 14. Instead, only slots 6 and 9 interconnect redundantly on the backplane between the fabric interface portion expanded in slots 7 and 8 in zone 3 and the 6G and 9G 40G I / O devices to accommodate 40G I / O devices. This expands from the existing 120G redundant switch unit capacity to 150G redundant switch unit capacity.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored.

Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

So far I looked at the center of the preferred embodiment for the present invention.

Those skilled in the art will understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

FIG. 1 is a diagram illustrating a structure of a multimedia service system to be accommodated in an ATCA (Advanced Telecomm Computing Architecture) standard platform.

2 is a block diagram schematically showing an embodiment of a protection switching control device for controlling redundancy through a base interface in the Advanced Telecomm Architecture Architecture (ATCA) platform according to the present invention.

3 illustrates a state of interconnection between each device configuring the system in the ATCA platform according to the present invention.

4 is a diagram illustrating a system block diagram of redundancy control through a base interface in the ATCA platform according to the present invention.

5 is a view showing a connection structure for the protection function according to the present invention.

6 is a view showing a detailed structure of the device control unit 310 of the protective switching control device according to the present invention of FIG.

7 is a conceptual diagram of a multimedia service system protection of an OTH-based ATCA platform according to the present invention.

8 is a flowchart illustrating a multimedia service system protection operation of an OTH based ATCA platform according to the present invention.

9 is a conceptual structural diagram of 1 + 1 protection according to the present invention.

FIG. 10 illustrates a backplane structure for accommodating a protection switching function and a maximum 180G system capacity based on the ATCA platform according to the present invention.

11 illustrates an ATCA backplane configuration according to the present invention.

Claims (15)

A device control unit for analyzing a real / herme or failure occurrence control signal of a working optical transport hierarchy (OTH) switch and decoding a media access (MAC) address signal; A protective switching controller for performing a switching to a protective OTH switch when a seal / dismount or a failure of the working optical transport hierarchy switch is generated and generating a selection control signal for switching to the protection OTH switch; And In response to a selection control signal for switching to the protection OTH switch, a link connection is performed by auto-negotiating with an input / output device (I / O device) for transmitting and receiving an OTH data frame connected to a base interface, and the base Ethernet switch for switching the OTH data frame input through an interface to a port corresponding to a destination MAC (Media Access) address address; protection device of the multimedia service system of the OTH-based ATCA platform. The method of claim 1, The Ethernet switch is a protection device of the multimedia service system of the OTH-based ATCA platform, characterized in that the communication with the OTH data frame input / output device 10/100 Base-TX Ethernet signal. The device of claim 1, wherein the device controller A system processor interface function unit for decoding the MAC address signal and generating a register operation signal of the device controller; A bus conversion function unit for converting a processor bus for controlling the working OTH switch or controlling a serial of the working OTH switch; A chip select signal generation and buffering function unit for generating and storing a selection signal for switching; A switch interface function to control the multiplexed processor bus and serial of the working OTH switch; And a physical layer control function unit configured to generate a processor access signal and a reset signal of the working OTH switch. The method of claim 3, wherein And the system processor interface function unit is a 16-bit parallel processor connection unit. An analysis step of analyzing a real / hernia or failure occurrence control signal of a working optical transport hierarchy (OTH) switch; A switching step of performing a switching to a protection optical transport hierarchy (OTH) switch and generating a selection control signal for switching to the protection OTH switch when a sealing / dismount or failure of the working optical transport hierarchy (OTH) switch occurs; A link step of automatically negotiating and linking an input / output device (I / O device) for transmitting and receiving an OTH data frame connected to a base interface in response to a selection control signal for switching to the protection OTH switch; And And switching the OTH data frame input through the base interface to a port corresponding to a destination media access (MAC) address. 2. The method of claim 5, wherein The link step is a protection method of the multimedia service system of the OTH-based ATCA platform, characterized in that the Ethernet signal communication of 10/100 Base-T method.  A plurality of input / output units for transmitting and receiving OTH data frames; A framer for extracting a failure state of the OTH data frame; An OTH switch having a redundant structure and fast switching the OTH data frame to a destination address port, and comparing an error state reported by the framer with a previously stored fault state and extracting an unprocessed fault state; And And a protection switching controller for interpreting the unprocessed failure state signal of the OTH switch and performing a switchover to a protection OTH switch. The method of claim 7, wherein the protection switching control unit A device control unit for analyzing a real / herme or failure occurrence control signal of the optical transport hierarchy (OTH) switch and decoding a media access (MAC) address signal; A switching control unit which performs a switching to a protection OTH switch when a seal / dismount or a failure of the optical transport hierarchy switch is generated and generates a selection control signal for switching to the protection OTH switch; And In response to a selection control signal for switching to the protection OTH switch, a link connection is performed by auto-negotiating with an input / output device (I / O device) for transmitting and receiving an OTH data frame connected to a base interface, and the base Ethernet switch for switching the OTH data frame input through an interface to a port corresponding to a destination MAC (Media Access) address address. The method of claim 7, wherein The OTH switch and the input / output unit is a multimedia service system of the OTH-based ATCA platform, characterized in that the redundant connection on the fabric interface. The method of claim 7, wherein The protection switching control unit and the input / output unit is a multimedia service system of the OTH-based ATCA platform, characterized in that the redundant connection on the base interface. The method according to claim 9 or 10, The redundant connection is a multimedia service system of the OTH-based ATCA platform, characterized in that the dual-star full duplex structure. The method of claim 7, wherein The OTH switch is a multimedia service system of the OTH-based ATCA platform, characterized in that the cross-point switch for switching the OTH data frame asynchronously. The method of claim 7, wherein And a clock generator providing a clock in a bus form to the OTH switch and the protection switching controller. The method of claim 7, wherein In order to extend the switching capacity of the OTH switch, Zone 3 (zone 3) of the ATCA platform extends to the switch fabric interface area, the multimedia service system of the OTH-based ATCA platform. The method of claim 14, The input / output unit is a multimedia service system of the OTH-based ATCA platform, characterized in that for processing 40G OTH data frames.

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