CN101133601A - Complex control node in automatic exchanging transmission network and control method thereof - Google Patents

Complex control node in automatic exchanging transmission network and control method thereof Download PDF

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Publication number
CN101133601A
CN101133601A CN200580048761.3A CN200580048761A CN101133601A CN 101133601 A CN101133601 A CN 101133601A CN 200580048761 A CN200580048761 A CN 200580048761A CN 101133601 A CN101133601 A CN 101133601A
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link
connection
control
controller
resource manager
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CN101133601B (en
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孙德胜
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/60—Router architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A complex control node in the automatic switched transport networks (ASTN) decomposes into a global control node and a local control node. The global control plane (GCP) in the global control node comprises the network call controller (NCC), the connection controller (CC), the routing controller (RC) and the link resource manager (LRM). GCP abstracts the inside of the boundary to the logic transport node according to the boundary of the local transport network and the link of the boundary works as the input-output link. The local control plane (LCP) in the local control node comprises the connection controller (CC), the routing controller (RC) and the link resource manager (LRM). The local transport plane (LTP) is composed by the local transport networks (LTN). According to the present invention, it can make the complex control node decompose into two logic control nodes to respectively perform the control of ASTN and LTN, and it has the terse and faithful advantages. It provides a connection control method of the above complex control node. It can perform the function of the connection establishment, the release and the failure process by the connection control to the complex control node.

Description

Complex control node and its control method in automatic switched transport network
Complex control node and its control method technical field in automatic switched transport network
The present invention relates to transmission net field, specifically, it is related to automatic switched transport network（Automatic switched transport networks, cylinder claims ASTN) in complex control node and its control method.Background technology
In communication network, the business that transmission network is carried by whole network provides transmission channel and transmission platform.Transmission network has data transfer network, optical transfer network etc., wherein typical optical transfer network has wavelength-division multiplex（Wavelength-division multiplexing, abbreviation WDM) transmission net, Synchronous Digital Hierarchy（Synchronous digital hierarchy, cylinder claims SDH) transmission net or Synchronous Optical Network (Synchronous optical network, abbreviation SONET) transmission net, these transmit networks and have been used widely in field of telecommunications.
Automatic switched transport network ASTN is the study hotspot in transmission net field in recent years.
ITU-TG.807 suggestions realize demand there is provided ASTN, propose by setting special control plane (Control plane, abbreviation CP) complete ASTN function, complete and management plane (Management plane simultaneously, abbreviation MP) and transport plane (Transport plane, abbreviation TP) interaction.This sunset is foretold, ASTN of the ITU-TG.8080 and G771X series suggestion there is provided optical-fiber network, that is Zi is dynamic to exchange Guang Wang Network (Automatic switched optical networks, cylinder claims ASON) functional structure and implementation process, including service call and be connected automatic foundation, it is automatic recover, the function such as discovery automatically.
For convenience, in this manual, the local transport plane TP for defining control plane CP and being controlled by CP collectively forms control node（Control node )0Usually, a control node includes a CP physical entity（Other CP entities as backup or protection are not included）With a physics transmission node TP, as shown in figure 1, such control node hereinafter is referred to as into standard control node.At present, this standard control node has been applied in ASTN networks, as shown in the rectangle Virtual wire frames in Fig. 2.But a control node may include more than one transmission node, and It is comprising a transmission network, such control node is referred to as complex control node, i.e. complex control node includes a control plane physical entity and multiple physics transmission nodes, and multiple physics transmission nodes constitute local transmission network, as shown in figure 3, locally transmission network is made up of 5 transmission node N1-N5.The part shown in irregular Virtual wire frames in Fig. 2 is exactly situation of this control node in ASTN networks.Complex control node shown in Fig. 3 is more complicated in terms of realizing the automatic foundation of service connection, deleting compared with the standard control node shown in Fig. 1.And the implementation of current standard suggestion and other technical forums also without reference to this complex control node.The content of the invention
The present invention is exactly in view of what above-mentioned technical problem was proposed, its object is to provide the complex control node in a kind of automatic switched transport network, the problem of sharing a control plane by transport plane that multiple transmission nodes are constituted to solve one.
It is another object of the present invention to provide connection control method of the above-mentioned complex control node in ASTN networks, the function such as automatic foundation, deletion and the link failure processing to complete connection.
According to an aspect of the present invention there is provided the complex control node in a kind of automatic switched transport network, including：
Global control section's point, is interacted for realizing with other control nodes in automatic switched transport network or user；And
Local control node, for being realized according to the control information of global control section's point to local transmission network-based control.
Preferably, global control section's point further comprises：
Global control plane, including：
- network call controller, the call request for handling other control nodes or user in automatic switched transport network；
- the first connection controller, the connection request for handling other control nodes or user in automatic switched transport network；
- the first path control deivce, for safeguarding the topology information of automatic switched transport network, there is provided the routing iinformation of network and the link-state information of the global transport plane of broadcast； - the first Link resource manager, the information that link-state information and/or adaptation the first connection controller for providing global transport plane are sent；And
Global transport plane, its according to the border of local transmission network, by border inner it is abstract be a logic transmission node, border link is used as its input and output link.
Preferably, the local control node further comprises：
Local control plane, including：
- the second connection controller, the link failure information for handling information and local transport plane from the global control plane；
- secondary route controller, for providing the routing iinformation in the local control node；
- the second Link resource manager, sets up or release information for providing the link-state information of local transport plane and/or sending connection to local transport plane；And
Local transport plane, is constituted by locally transmitting network.
According to another aspect of the present invention there is provided a kind of connection control method of above-mentioned complex control node, comprise the following steps：
First connection controller receives the connection request of other control nodes or user in automatic transmission net network；
The routing iinformation of network is inquired about as needed；
First connects controller to the first Link resource manager transmission link control information；
Be confused link control message is sent to the second connection controller after the adaptation of the first Link resource manager；
Second connection controller inquires about the routing iinformation of connection to secondary route controller, and sends resource processing information to the second Link resource manager；
The second Link resource manager network element relevant with the connection into local transmission network sends link information；And
Response message is returned to the first connection controller from the network element.
Preferably, the step chaff for determining the need for inquiring about the routing iinformation of network further comprises：First connection controller determines the need for inquiring about the routing iinformation of network according to heavy-route mode；If it is required, then being inquired about to the first path control deivce, and obtain routing iinformation. Preferably, if the border link of the global transport plane in the complex control node breaks down, the connection control method also includes：
Network element at failure boundary link is to the second Link resource manager transmission link fault message；The link failure information is sent to the first Link resource manager by the second Link resource manager；
The link failure information is forwarded to the first path control deivce by the first Link resource manager；First path control deivce broadcasts the link failure information to other control nodes in net Network are automatically delivered.
Preferably, if the link in local transport plane in the complex control node breaks down, the connection control method also includes：
The network element at faulty link two ends is to the second Link resource manager transmission link fault message；Second Link resource manager forwards the link failure information to the second connection controller and secondary route controller respectively；
Second connection controller is inquired about to secondary route controller, obtains the newly-built routing iinformation for recovering connection；
Second connection controller sends resource reservation information to the second Link resource manager；And second Link resource manager to it is described it is newly-built recover the relevant network element transmission connection of connection and set up information, and receive response message.
The present invention also provides a kind of connection control method of above-mentioned complex control node, Bao include Yi Xia Bu Sudden：First connection controller receives the connection request of other control nodes or user in automatic transmission net network；
Determine the need for inquiring about the routing iinformation of network；
First connection controller inquires about link-state information to the first Link resource manager；
Link control message is converted to connection control information by the first connection controller according to link-state information, is sent to the second connection controller；
Second connection controller inquires about the routing iinformation of connection to secondary route controller, and sends resource processing information to the second Link resource manager；
The second Link resource manager network element relevant with the connection into local transmission network, which is sent, to be connected Connect information；And
Response message is returned to the first connection controller from the network element.
Preferably, in the process, link information is sent from the second connection controller network element relevant with the connection into local transmission network, specifically included：
Second connection controller inquires about the routing iinformation of connection to secondary route controller, and inquires about link-state information to the second Link resource manager；And
Second connection controller generation link information, into local transmission network, the network element relevant with the connection is sent.
The present invention also provides a kind of connection control method of above-mentioned complex control node, comprises the following steps：First connection controller receives the connection request of other control nodes or user in automatic transmission net network；
Determine the need for inquiring about the routing iinformation of network；
First connects controller to the first Link resource manager transmission link control information；
The link control message is sent to the second connection controller after the adaptation of the first Link resource manager；
Second connection controller inquires about the routing iinformation of connection to secondary route controller, and inquires about link-state information to the second Link resource manager；
Second connection controller generation link information, into local transmission network, the network element relevant with the connection is sent；And
Response message is returned to the first connection controller from the network element.
Preferably, in the connection control method, connection control information is sent from the first connection controller to the second connection controller, is specifically included：
First connection controller inquires about the link-state information of local transport plane to the first Link resource manager；And
Link control message is converted to connection control information by the first connection controller according to link-state information, is sent to the second connection controller.
Preferably, if the link in local transport plane in the complex control node breaks down, the connection control method also includes： The network element at faulty link two ends is to the second Link resource manager transmission link fault message；Second Link resource manager connects controller to the mat woven of fine bamboo strips two respectively and secondary route controller forwards the link failure information；
Second connection controller is inquired about to secondary route controller, obtains the newly-built routing iinformation for recovering connection；
Second connection controller inquires about link-state information to the second Link resource manager；And second connection controller generation connection set up information, and sent to the newly-built relevant network element of connection that recovers, reception response message.
According to the present invention, complex control node is decomposed into two logic control nodes to be respectively completed
ASTN networks and local transmission network-based control, possess succinct, reliable advantage；And controlled by the connection to complex control node, the function of connection foundation, release and troubleshooting can be completed.Brief description of the drawings
Fig. 1 is the schematic diagram of the standard control node of ASTN networks in the prior art；
Fig. 2 is the schematic diagram of ASTN networks in the prior art；
Fig. 3 is the schematic diagram of the complex control node of ASTN networks；
Fig. 4 is the schematic diagram of complex control node according to an embodiment of the invention；
Fig. 5 is the schematic diagram of the connection control method of complex control node according to an embodiment of the invention；
Fig. 6 is the schematic diagram of the connection control method of complex control node according to another embodiment of the invention；
Fig. 7 is the schematic diagram of the connection control method of complex control node according to still a further embodiment；
Fig. 8 is the schematic diagram of one embodiment of border link troubleshooting in the connection control method of the present invention；
Fig. 9 is the schematic diagram of one embodiment that link failure is handled between local transmission network Intranet member in the connection control method of the present invention；
Figure 10 is the link event between local transmission network Intranet member in the connection control method of the present invention Hinder the schematic diagram of another embodiment of processing.Embodiment
Believe by the way that below in conjunction with the drawings and specific embodiments detailed description of the invention, the above objects, features and advantages of the present invention will become apparent.
On Fig. 1, Fig. 2 and Fig. 3, it is described in the introduction, the description thereof will be omitted herein.The core concept of the present invention is the frame structure according to ASTN networks, and complex control node is decomposed into two logic control nodes, and related ASTN functions are completed according to the thought of layering.
Below the present invention is illustrated by taking ASTN networks and complex control node 2 shown in Fig. 2 as an example.Fig. 4 is the schematic diagram of the just blunt complex control node according to one embodiment of the present of invention.As shown in figure 4, complex control node includes global control section's point, it completes other control nodes with ASTN networks（Such as control node 1,3) or the ASTN network user interaction, by global control plane（Global Control Plane, abbreviation GCP) and global transport plane（Global Transport Plane, abbreviation GTP) constitute.Complex control node also includes local control node, and it is realized to local transmission network-based control, by local control plane according to the control information of global control section's point（Local Control Plane, abbreviation LCP) and local transport plane（Local Transport Plane, abbreviation LTP) constitute.So, the complex control node shown in Fig. 3 can just be decomposed into two logic control nodes, global control section's point and local control node.
Further, global control plane GCP includes：Network call controller NCC (Network Call Controller), connection controller CC (Connection Controller), path control deivce RC (Routing Controller) and Link resource manager LRM (Link Resource Manager).GCP network call controller NCC can receive the call request of other control nodes or the ASTN network user in ASTN networks, be handled according to the processing procedure in standard control node.GCP connection controller CC can receive the connection request of other control nodes or the ASTN network user in ASTN networks, be handled according to the processing procedure in standard control node.GCP path control deivce RC safeguards the topology information of ASTN networks, and can receiving GCP connection controller CC routing inquiry request, there is provided the routing iinformation of network.GCP path control deivce RC can also receive the chain ^^ states that other control nodes are sent in ASTN networks（As link is available, link not It can use, link is busy etc.）Information, and local global transport plane GTP link-state information is broadcasted, include border link 1-5 state, its processing procedure is identical with standard control node.GCP Link resource manager LRM can receive the link control message that GCP connection controller CC is sent, including setting up Subnetwork connection SNC (Sub Network Connection), release Subnetwork connection, and local control plane LCP is forwarded to after being adapted to the link control message.GCP Link resource manager LRM can also receive global transport plane GTP link-state information.
Global transport plane GTP is the transmission node of logic, the local inside topology for transmitting network that its is fully enclosed, and only other control nodes are visible in border link pair ASTN networks.Global transport plane GTP can be determined in the following way:It is determined that locally transmitting the border of network, by taking Fig. 2 control node 2 as an example, peripheral link 1,2,3,4 and 5 around transmission node Nl, N2, N3, N4 and N5 determines border, then by border inner it is abstract be a logic transmission node, border link 15 as global transport plane GTP input and output link.
In addition, local control plane LCP includes：Connect controller CCsub, its handle the Link resource manager LRM from GCP link control message and local transport plane LTP link failure information；Path control deivce RCsub, the routing iinformation that can be provided in local control node；Link resource manager LRMsub, it receives local transport plane LTP link-state information and/or the network element into local transport plane LTP sends connection and set up or release information.
Local transport plane LTP is constituted by locally transmitting network, such as the link between transmission node Nl, N2, N3, N4, N5 and above-mentioned node.
By above description as can be seen that using the present embodiment, complex control node can be made up of the control node of two logics, the two control nodes are realized to ASTN networks and local transmission network-based control according to the thought of layering.
Complex control node is when handling the call request of other control nodes or the ASTN network user in ASTN networks, it is responsible for receiving and is handled by GCP network call controller, its handling process is identical with standard control node, therefore, is not described in detail herein.
Fig. 5 is the schematic diagram of the connection control method of complex control node according to an embodiment of the invention, wherein representing the flow direction and processing sequence of signal using the form of " arrow+numeral ".As shown in Fig. 5, the connection controller CC of GCP first receives other control nodes in ASTN networks or user Connection request（Arrow 1), such as receive the connection request from control node 1.After connection request is received, GCP connection controller CC determines the need for the routing iinformation of the connection of the path control deivce RC inquiry requests foundation to GCP according to heavy-route mode.If necessary to inquire about, then inquiry request is sent to GCP path control deivce RC（Arrow 2), and obtain the route results information of return（Arrow 3).If need not inquire about, or obtain after route results information, GCP connection controller CC is according to the information of the connection request carrying received, to GCP Link resource manager LRM transmission link control information（Arrow 4), wherein the empty packet processed of chain includes Subnetwork connection and set up or Subnetwork connection release, in the present embodiment, may, for example, be set up GTP the 1, Subnetwork connection of 4 links.GCP Link resource manager LRM is received after chain information, chain information is adapted to according to mapping relations, the link control message of GCP levels is converted to the connection request of LCP layer time, then the connection request of the LCP layer time after adaptation is forwarded to LCP connection controller CCsub(arrow 5).
LCP connection controller CCsubAfter the connection request for receiving LCP layer time, to LCP path control deivce RCsubInquire about (arrow 6), obtain the routing iinformation of the connection（Arrow 7), such as the Subnetwork connection for setting up 1,4 links, the routing iinformation of the foundation connection of acquisition can be " N1 → N5 → N4 ".Also, LCP connection controller CCsubTo LCP Link resource manager LRMsubSend resource processing information（Arrow 8), resource processing packet includes resource reservation information or resource is released;^ information, is resource reservation information in the present embodiment.LCP Link resource manager LRMsubInto local transmission network, the network element relevant with this connection sends link information, for example, sent to Nl, N5, N4（Arrow 9a, 9b, 9c) SNC and link connection LC set up information.Then LCP Link resource manager LRMsubResponse message is received from these network elements（Arrow 10a, 10b, 10c), and it is forwarded to LCP connection controller CCsub(arrow 11).Again by LCP connection controller CCsubResponse message is returned to GCP Link resource manager LRM (arrow 12), GCP connection controller CC (arrow 13) is then sent to.GCP connection controller CC is according to the response message of return, it is determined whether continue to transmit connection request（Arrow 14).
Connection is put if connection request is #, the link control message that GCP connection controller CC is produced can be the Subnetwork connection for for example discharging 1,4 links.In this case, LCP connection controller CCsubThe routing iinformation for obtaining connection can be " N1 → N5 → N4 ", and to LCP Link resource manager LRMsubSend resource release information.The last Link Resource Manager by LCP Device LRMsubSNC and LC release information is sent to Nl, N5, N4.
Preferably, the empty packet processed of the chain includes Subnetwork connection and set up or Subnetwork connection release；The resource processing packet includes resource reservation information or resource release information.
Fig. 6 is the schematic diagram of the connection control method of complex control node according to another embodiment of the invention.As shown in fig. 6, first, GCP connection controller CC receives the connection request of other control nodes or user in ASTN networks（Arrow 1), such as receive the connection request from control node 1.After connection request is received, GCP connection controller CC determines the need for the path control deivce RC query routing information to GCP according to heavy-route mode.If necessary to inquire about, then inquiry request is sent to GCP path control deivce RC（Arrow 2), and obtain the route results information (arrow 3) of return.If need not inquire about, or obtain after route results information, the information that GCP connection controller CC is carried according to connection request, to GCP Link resource manager LRM transmission link inquiry requests（Arrow 4), requesting query GTP link-state information.GCP Link resource manager LRM returns to related link-state information（Arrow 5), such as GTP 1,4 link idles.Then GCP connection controller CC is according to the relevant link state information received, link control message is converted to LCP connection control information, " SNC for setting up GTP 1,4 links " be for example converted to LCP " connection set up " information, and to LCP connection controller CCsubTransmission（Arrow 6).
LCP connection controller CCsubReceive after connection control information, to LCP path control deivce RCsubInquiry（Arrow 7), obtain the routing iinformation of connection（Arrow 8), such as the Subnetwork connection for setting up 1,4 links, the routing iinformation of the connection of acquisition can be " N1 → N5 → N4,.Also, LCP connection controller CCsubTo LCP Link resource manager LRMsubSend resource reservation information（Arrow 9).LCP Link resource manager LRMsubInto local transmission network, the network element relevant with this connection sends link information, for example, sent to Nl, N5, N4（Arrow 10a, llb 11c) SNC and LC set up information.Then LCP Link resource manager LRMsubResponse message is received from these network elements（Arrow lla, lib, 11c), and it is forwarded to LCP connection controller CCsub(arrow 12).Again by LCP connection controller CCsubResponse message is returned to GCP connection controller CC (arrow 13).GCP connection controller CC is according to the response message of return, it is determined whether continue to transmit connection request（Arrow 14). By above description it can be seen that, the present embodiment is compared with embodiment illustrated in fig. 5, GCP Link resource manager LRM is without the adaptation to foundation or the link control message for discharging SNC, but the connection controller CC of connection the controller CC and LCP by GCPsubDirectly communicated.
Further, in the embodiment shown in fig. 6, can also by LCP connection controller CCsubInto local transmission network, the network element relevant with this connection sends link information, specifically includes：As LCP connection controller CCsubReceive after connection control information, to LCP path control deivce RCsubThe routing iinformation of connection is inquired about, and to LCP Link resource manager LRMsubLink-state information is inquired about, such as link Nl → N5 and N5 → N4 are idle.Then LCP connection controller CCsubLink information is generated according to above- mentioned information, the relevant network element into local transmission network is sent.
By above description as can be seen that the present embodiment can LCP Link resource manager LRMsubUsed during without to network element transmission link information.
Fig. 7 is the schematic diagram of the connection control method of complex control node according to still a further embodiment.As shown in fig. 7, the connection controller CC of GCP first receives the connection request of other control nodes or user in ASTN networks（Arrow 1), such as receive the connection request from control node 1.After connection request is received, GCP connection controller CC determines the need for the path control deivce RC query routing information to GCP according to heavy-route mode.If necessary to inquire about, then inquiry request is sent to GCP path control deivce RC（Arrow 2), and obtain the route results information (arrow 3) of return.If need not inquire about, or obtain after route results information, GCP connection controller CC is according to the information of the connection request carrying received, to GCP Link resource manager LRM send chain information（Arrow 4), for example set up the Subnetwork connection of GTP 1,4 links.
GCP Link resource manager LRM is received after link control message, and it is adapted to, and then the link control message after adaptation is forwarded to LCP connection controller CCsub(arrow 5).
LCP connection controller CCsubReceive after link control message, to LCP path control deivce RCsubInquiry（Arrow 6), obtain the routing iinformation of connection（Arrow 7), such as the Subnetwork connection for setting up 1,4 links, the routing iinformation of the connection of acquisition can be " N1 → N5 → N4 ".Then, LCP connection controller CCsubTo LCP Link resource manager LRMsubInquiry（Arrow 8), obtain link-state information（Arrow 9), such as link N1 → N5 and N5-N4 are idle.Then LCP connection controller CCsubAccording to the routing iinformation and link-state information of the connection of acquisition Generation SNC and LC sets up information, and the relevant network element into local transmission network is sent（Arrow 10a, 10b, 10c).Then LCP connection controller CCsubResponse message is received from these network elements（Arrow lla, lib, 11c), and it is forwarded to GCP Link resource manager LRM (arrow 12).Response message is returned to GCP connection controller CC (arrow 13) by GCP Link resource manager LRM again.GCP connection controller CC is according to the response message of return, it is determined whether continue to transmit connection request（Arrow 14).
In the present embodiment, can also from GCP connection controller CC from connection controller CC to LCP send connection control information, specifically include：After need not inquire about or obtain routing iinformation, the information that GCP connection controller CC is carried according to connection request, GTP link-state information is inquired about to GCP Link resource manager LRM, GCP Link resource manager LRM returns to related link-state information, then GCP connection controller CC is according to the relevant link state information received, link control message is converted to LCP connection control information, and to LCP connection controller CCsubTransmission.
Fig. 8 is the schematic diagram of one embodiment of border link troubleshooting in the connection control method of the present invention, and it can be applied in the method shown in Fig. 5, Fig. 6 and Fig. 7.
If as shown in figure 8, the border link 4 of complex control node breaks down, first by the network element of failure boundary link, such as N4, to LCP Link resource manager LRMsubTransmission link fault message（Arrow la).Then, LCP Link resource manager LRMsubThe link failure information is forwarded to GOP Link resource manager LRM (arrow 2), then is sent to by GCP Link resource manager LRM GCP path control deivce RC (arrow 3).GCP path control deivce RC is received after link failure information, and into ASTN networks, other control nodes broadcast the link failure information（Arrow 4).
Fig. 9 is the schematic diagram of one embodiment that link failure is handled between local transmission network Intranet member in the connection control method of the present invention, and it can be applied in the method shown in Fig. 5 and Fig. 6.
As shown in figure 9, if the link in the local transport plane LTP of complex control node breaks down, such as N1-N5 links break down, then first, and the network element at faulty link two ends is the Link resource manager LRM of N1 and N5 to L PsubTransmission link fault message（Arrow la, lb).Then, LCP Link resource manager LRMsubRespectively to LCP connection controller CCsubAnd road By controller RCsubForward the link failure information（Arrow 2a, 2b).Then, LCP connection controller CCsubTo LCP path control deivce RCsubInquiry（Arrow 3), obtain the newly-built routing iinformation for recovering connection（Arrow 4), such as new routing iinformation " N1 → N2 → N3-N4 ", and to LCP Link resource manager LRMsubSend resource reservation information（Arrow 5).LCP Link resource manager LRMsubReceive LCP connection controller CCsubResource reservation information after, into local transmission network, the network element relevant with newly-built recovery connection sends connection and sets up information, for example, set up information to Nl, N2, N3 and N4 transmission SNC and LC（Arrow 6a, 6b, 6c, 6d), and receive response message（Arrow 7a, 7b, 7c, 7d).
Figure 10 is the schematic diagram of another embodiment that link failure is handled between local transmission network Intranet member in the connection control method of the present invention, and it can be applied in the method shown in Fig. 7.
As shown in Figure 10, if the link in local transport plane LTP in complex control node breaks down, such as link N1-N5 breaks down, then first, Link resource manager LRM from the network element at faulty link two ends to LCPsubTransmission link fault message（Arrow la, lb).Then, LCP Link resource manager LRMsubRespectively to LCP connection controller CCsubWith path control deivce RCsubForward the link failure information（Arrow 2a, 2b).LCP connection controller CCsubRC is inquired about to LCP path control deivcesub(arrow 3), obtains the newly-built routing iinformation (arrow 4) for recovering connection, such as new routing iinformation " N1 → N2 → N3 → N4,.And LCP connection controller CCsubTo LCP Link resource manager LRMsubInquiry（Arrow 5), obtain relevant link-state information (arrow 6), such as Nl-N2, N2-N3 and N3-N4 link idle.Then, LCP connection controller CCsubAccording to the routing iinformation and link-state information of acquisition, information is set up in generation connection, is sent to relevant network element, and for example sending SNC and LC to Nl, N2, N3 and N4 sets up information（Arrow 7a, 7b, 7c, 7d), and receive response message（Arrow 8a, 8b, 8c, 8d).Industrial applicability
Present invention could apply to the complex control node in the networks such as ASTN, ASON.

Claims (1)

  1. Claim
    1. the complex control node in a kind of automatic switched transport network, it is characterised in that including：Global control section's point, is interacted for realizing with other control nodes in automatic switched transport network or user；And
    Local control node, for being realized according to the control information of global control section's point to local transmission network-based control.
    2. complex control node according to claim 1, it is characterised in that global control section's point further comprises：
    Global control plane, including：
    - network call controller, the call request for handling other control nodes or user in automatic switched transport network；
    - the first connection controller, the connection request for handling other control nodes or user in automatic switched transport network；
    - the first path control deivce, for safeguarding the topology information of automatic switched transport network, there is provided the routing iinformation of network and the link-state information of the global transport plane of broadcast；
    - the first Link resource manager, the information that link-state information and/or adaptation the first connection controller for providing global transport plane are sent；And
    Global transport plane, its according to the border of local transmission network, by border inner it is abstract be a logic transmission node, border link is used as its input and output link.
    3. complex control node according to claim 2, it is characterised in that the local control node further comprises：
    Local control plane, including：
    - the second connection controller, the link failure information for handling information and local transport plane from the global control plane；
    - secondary route controller, for providing the routing iinformation in the local control node；- the second Link resource manager, sets up or release information for providing the link-state information of local transport plane and/or sending connection to local transport plane；And Local transport plane, is constituted by locally transmitting network.
    4. a kind of connection control method of complex control node as claimed in claim 3, it is characterised in that comprise the following steps：
    First connection controller receives the connection request of other control nodes or user in automatic transmission net network；
    The routing iinformation of network is inquired about as needed；
    First connects controller to the first Link resource manager transmission link control information；The link control message is sent to the second connection controller after the adaptation of the first Link resource manager；
    Second connection controller inquires about the routing iinformation of connection to secondary route controller, and sends resource processing information to the Link resource manager of the mat woven of fine bamboo strips two；
    The second Link resource manager network element relevant with the connection into local transmission network sends link information；And
    Response message is returned to the first connection controller from the network element.
    5. connection control method according to claim 4, it is characterised in that described to determine the need for further comprising the step of inquiring about the routing iinformation of network：
    First connection controller determines the need for inquiring about the routing iinformation of network according to heavy-route mode；And
    If it is required, then being inquired about to the first path control deivce, and obtain routing iinformation.
    6. the connection control method according to claim 4 or 5, it is characterised in that if the border link of the global transport plane in the complex control node breaks down, the connection control method also includes：
    Network element at failure boundary link is to the second Link resource manager transmission link fault message；The link failure information is sent to the first Link resource manager by the second Link resource manager；
    The link failure information is forwarded to the first path control deivce by the first Link resource manager；And
    First path control deivce is confused link failure letter to other control node broadcast in network are automatically delivered Breath.
    7. the connection control method according to claim 4 or 5, it is characterised in that if the link in local transport plane in the complex control node breaks down, the connection control method also includes：
    The network element at faulty link two ends is to the second Link resource manager transmission link fault message；Second Link resource manager forwards the link failure information to the second connection controller and secondary route controller respectively；
    Second connection controller is inquired about to secondary route controller, obtains the newly-built routing iinformation for recovering connection；
    Second connection controller sends resource reservation information to the second Link resource manager；And second Link resource manager to it is described it is newly-built recover the relevant network element transmission connection of connection and set up information, and receive response message.
    8. a kind of connection control method of complex control node as claimed in claim 3, comprises the following steps：
    First connection controller receives the connection request of other control nodes or user in automatic transmission net network；
    Determine the need for inquiring about the routing iinformation of network；
    First connection controller inquires about link-state information to the first Link resource manager；Link control message is converted to connection control information by the first connection controller according to link-state information, is sent to the second connection controller；
    Second connection controller inquires about the routing iinformation of connection to secondary route controller, and sends resource processing information to the second Link resource manager；
    The second Link resource manager network element relevant with the connection into local transmission network sends link information；And
    Response message returns to the connection controller of the mat woven of fine bamboo strips one from the network element.
    9. connection control method according to claim 8, it is characterised in that described to determine the need for further comprising the step of inquiring about the routing iinformation of network：
    First connection controller determines the need for inquiring about the routing iinformation of network according to heavy-route mode； And
    If it is required, then being inquired about to the first path control deivce, and obtain routing iinformation.
    10. connection control method according to claim 8, it is characterised in that in the process, sends link information from the second connection controller network element relevant with the connection into local transmission network and specifically includes：
    Second connection controller inquires about the routing iinformation of connection to secondary route controller, and inquires about link-state information to the second Link resource manager；And
    Second connection controller generation link information, into local transmission network, the network element relevant with the connection is sent.
    11. according to any described connection control method of claim 8 to 10, it is characterised in that if the border link of the global transport plane in the complex control node breaks down, the connection control method also includes：
    Network element at failure boundary link is to the second Link resource manager transmission link fault message；The link failure information is sent to the first Link resource manager by the second Link resource manager；
    The link failure information is forwarded to the first path control deivce by the first Link resource manager；And
    First path control deivce broadcasts the link failure information to other control nodes in network are automatically delivered.
    12. according to any described connection control method of claim 8 to 10, it is characterised in that if the link in local transport plane in the complex control node breaks down, the connection control method also includes：
    The network element at faulty link two ends is to the second Link resource manager transmission link fault message；Second Link resource manager forwards the link failure information to the second connection controller and secondary route controller respectively；
    The mat woven of fine bamboo strips two connects controller and inquired about to secondary route controller, obtains the newly-built routing iinformation for recovering connection；
    Second connection controller sends resource reservation information to the second Link resource manager；And Second Link resource manager sends connection to the network element relevant with the newly-built recovery connection and sets up information, and receives response message.
    13. a kind of connection control method of complex control node as described in claim 3, comprises the following steps：
    First connection controller receives the connection request of other control nodes or user in automatic transmission net network；
    Determine the need for inquiring about the routing iinformation of network；
    First connects controller to the first Link resource manager transmission link control information；Be confused link control message is sent to the second connection controller after the adaptation of the first Link resource manager；
    Second connection controller inquires about the routing iinformation of connection to secondary route controller, and inquires about link-state information to the second Link resource manager；
    Second connection controller generation link information, into local transmission network, the network element relevant with the connection is sent；And
    Response message returns to first from the network element and connects controller.
    14. connection control method according to claim 13, it is characterised in that described to determine the need for further comprising the step of inquiring about the routing iinformation of network：
    First connection controller determines the need for inquiring about the routing iinformation of network according to heavy-route mode；If it is required, then being inquired about to the first path control deivce, and obtain routing iinformation.
    15. connection control method according to claim 13, it is characterised in that in the connection control method, sends connection control information from the first connection controller to the second connection controller, specifically includes：
    First connection controller inquires about the link-state information of local transport plane to the first Link resource manager；And
    Link control message is converted to connection control information by the first connection controller according to link-state information, is sent to the second connection controller.
    16. according to any described connection control method of claim 13 to 15, it is characterised in that if the border link of the global transport plane in the complex control node breaks down, the company Connecing control method also includes：
    Network element at failure boundary link is to the second Link resource manager transmission link fault message；The link failure information is sent to the first Link resource manager by the second Link resource manager；
    The link failure information is forwarded to the first path control deivce by the first Link resource manager；And
    First path control deivce broadcasts the link failure information to other control nodes in network are automatically delivered.
    17. according to any described connection control method of claim 13 to 15, it is characterised in that if the link in local transport plane in the complex control node breaks down, the connection control method also includes：
    The network element at faulty link two ends is to the Link resource manager transmission link fault message of the mat woven of fine bamboo strips two；Second Link resource manager forwards the link failure information to the second connection controller and secondary route controller respectively；
    Second connection controller is inquired about to secondary route controller, obtains the newly-built routing iinformation for recovering connection；
    Second connection controller inquires about link-state information to the Link resource manager of the mat woven of fine bamboo strips two；And second connection controller generation connection set up information, and sent to the newly-built relevant network element of connection that recovers, reception response message.
CN200580048761.3A 2005-08-15 2005-08-15 Complex control node in automatic exchanging transmission network and control method thereof Expired - Fee Related CN101133601B (en)

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CN101360349B (en) 2008-09-12 2011-01-19 中兴通讯股份有限公司 Resistant boundary node and establishing method for connection between resistant boundary nodes
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