CN101426214A - system and method for real-time iub and iur link detection and aal5 channel detection in utran - Google Patents

Abstract

System and method for identifying interfaces and channels in a network using messages passing through the network. An embodiment comprises detecting components of a network, comprises capturing a message from the network, extracting a network node identifier from the captured message, comparing the network node identifier to a database of known network nodes, and, if the network node identifier is not associated with a known network node, then adding an entry for a new network node to the database, wherein the new network node entry includes the network node identifier.

Description

Be used for the real-time iub of UTRAN and the system and method for Iur link detecting and AAL5 Channel Detection

The application requires to submit on March 30th, 2007, name be called System and Method forReal-Time Iub and Iur Link Detection and AAL5 Channel Detection in UTRAN (being used for the real-time iub of UTRAN and the system and method for Iur link detecting and AAL5 Channel Detection), application number is No.60/909, the interests of 267 U.S. Provisional Application, this application is incorporated herein for your guidance.

Technical field

The present invention relates generally to be used for detecting the system and method for network communication link, more specifically, relate to and be used for detecting the Iub of UTRAN and the system and method for Iur interface and AAL5 channel.

Background technology

Universal Mobile Telecommunications System (UMTS) is at first by ETSI (ETSI) with carry out the standardized third generation (3G) mobile phone technology by third generation partner program (3GPP) now.UMTS uses Wideband Code Division Multiple Access (WCDMA) (W-CDMA) to come bearer circuit exchange (CS) and packet switching (PS) business as its air interface.Being used for the networking component of UMTS and the explanation of agreement is the known technology of this area, and the public can be from 3GPP, and ETSI and other resources obtain.The UMTS network architecture comprises three territories: core network (CN), UMTS Terrestrial radio access network network (UTRAN), and subscriber equipment (UE).

UTRAN provides air interface to insert for user's UE.The base station of UTRAN is called as Node B, and the control appliance of Node B is called as radio network controller (RNC).The UMTS subscriber equipment is communicated by letter with Node B via the WCDMA air interface.UE can be attached to PS territory or CS territory or both.UE can use the professional and CS business of PS simultaneously.

ATM(Asynchronous Transfer Mode) is used for the transfer of data of UMTS.Multiplexed and the multichannel decomposition of ATM layer, and route ATM cell, and from their order of end-to-end assurance.ATM Adaptation Layer (AAL) is responsible for creating and receive Payload by the different application of the lower level representative of ATM.ATM Adaptation Layer the 2nd type (AAL2) is used for transmitting to the weak point of the application of time delay sensitivity and the grouping of different length.AAL2 is used to transmit a plurality of data flow and is used for signaling and the grouping of user's Payload.Connection identifier (CID (CID) is used to identify not homogeneous turbulence.ATM Adaptation Layer the 5th type (AAL5) is supported frame and is used for control information transmission, i.e. signaling information.

UMTS has defined several interfaces, channel and agreement, is used for the calling that data between the switching network assembly are established to UE.Each calling comprises a large amount of message of crossing multiple interfaces.In order analyze to call out fully, must collect and the related message of calling out of all being used to.A shortcoming of prior art is at the UMTS network a large amount of nodes to be arranged, and must know these network nodes each so that monitoring network accurately.Each node has one or more interfaces it is connected to other node in the network.

Second shortcoming of prior art is to move when increasing, upgrading, and network node changes continuously during the assembly of maintenance or deletion such as Node B.Therefore, when each such variation took place, service supplier must manually upgrade the network configuration map.

Summary of the invention

Mainly solve or prevented these and other problem by embodiments of the invention, and mainly realized technological merit, in the present invention, from the message of UTRAN, extract the RNC identifier with the interface between the sign RNC assembly.Also extract the Node B identifier to identify new Node B and relevant interface.Extract virtual channel identifier with the new channel among the sign UTRAN.

According to embodiments of the invention, the method that is used to detect networking component comprises from network acquisition message, from the message of being caught, extract the network node identifier, the database of comparing cell identifier and known network node, and, if the network node identifier is uncorrelated with the known network node, then in database, increase the clauses and subclauses (entry) that are used for new network node, wherein the clauses and subclauses of new network node comprise the network node identifier.This method can also be included as the message identifier receiving node of being caught, wherein this receiving node is known network node, and in database, increase the clauses and subclauses of new network interface, wherein this new network interface clauses and subclauses are corresponding to the new network interface of the new network node of the receiving node of connection first end points and second end points.New network node, receiving node and to user's new network interface.

In one embodiment, new network node is the radio network controller (RNC) in the UTRAN network; And the network node identifier is the RNC identifier.In another embodiment, receiving node and new network node all are radio network controller (RNC), and new network interface is the Iur interface in the UTRAN network.New network node can be the Node B in the UTRAN network, and the network node identifier can be the Node B identifier.Receiving node can be radio network controller (RNC), and new network node is a Node B, and new network interface is the Iub interface in the UTRAN network.The message of being caught can be that Radio Link is set up message, and the network node identifier can be the transport layer address parameter.

According to another embodiment of the invention, the method that is used for the channel of marked network comprises from network acquisition message, from the message of being caught, extract Channel Identifier, create channel key (key) from Channel Identifier, the database of this channel key and known channel relatively, if channel key and known channel are uncorrelated, then in database, increase the clauses and subclauses that are used for new channel.Channel Identifier can be selected in the group that virtual channel identifier (VCI) and atm port are formed from by virtual route identifier (VPI).New channel can be associated with interface.Can use the point code (pointcode) of being caught in the message to identify interface.

In one embodiment, interface is the Iur interface in the UTRAN network, and the message of being caught is Radio Network Subsystem Application Part (RNSAP) message, and point code is associated with radio network controller (RNC).Whether message that can be by determining to have channel key identify interface from the be hunted down number of times of predetermined number of known interface.In another embodiment, interface is the Iub interface in the UTRAN network, and the message of being caught is node B application part (NBAP) or Access Link Control Application Part (ALCAP) message.

Description of drawings

In order more completely to understand the present invention and advantage thereof, now carry out following description in conjunction with the accompanying drawings, wherein:

Fig. 1 has illustrated to be coupled to according to embodiments of the invention the monitoring equipment of UTRAN network;

Fig. 2 is the protocol stack of Iub interface;

Fig. 3 is the protocol stack of Iur interface;

Fig. 4 has illustrated the message of catching of crossing network interface according to an embodiment of the invention;

Fig. 5 has illustrated the message of catching of crossing network interface according to another embodiment of the invention;

Fig. 6 has illustrated the message of catching of crossing network interface according to another embodiment of the invention; And

Fig. 7 has illustrated to be used for according to one embodiment of present invention the flow chart of the channel of marked network.

Embodiment

The invention provides many applicable inventive concepts, this may be embodied in the various concrete environment.The specific embodiment of being discussed only is to make and use schematically concrete mode of the present invention, not delimit the scope of the invention.

Fig. 1 has illustrated the UTRAN part of UMTS network to comprise Node B 101 and radio network controller (RNC) 102.Node B 101 communicates with RNC 102 via Iub interface 103.RNC 102 intercoms mutually via Iur interface 104.Node B 101 communicates with subscriber equipment (UE) 105 via air interface Uu 106.When UE 105 makes or during receipt of call, by Iub interface 103 between Node B 101 and RNC 102 and by Iur interface 104 exchange of signaling message between RNC 102.Monitor or detector 107 non-invasively are coupled to RNC 102 fully to catch all accord message, and these protocol messages are propagated and propagated from RNC 102 to RNC 102 by Iub and Iur interface 103 and 104.Monitor 107 is coupled to central server 108, and this central server allows the operator to visit the network information that monitor 107 is collected.

Fig. 2 has illustrated to be used for the protocol stack of the Iub interface of UTRAN network.Fig. 3 has illustrated to be used for the protocol stack of the Iur interface of UTRAN network.UTRAN has realized being used for the ATM infrastructure of Iub and Iur interface.UTRAN uses AAL2 and AAL5 self adaptation on the ATM layer.Node B application part (NBAP), Access Link Control Application Part (ALCAP) and Radio Network Subsystem Application Part (RNSAP) protocol message all are carried on the AAL5 channel.

The minimum unit of ATM cell in ATM, and comprise two address parameters, virtual route identifier (VPI) and virtual channel identifier (VCI).Virtual route is permanent virtual connection that is used for exchanging NBAP and ALCAP message between RNC and Node B.Virtual route connects disposable foundation and reservation, up to by service supplier operation and maintenance (O﹠amp; M) behavior changes or deletes.In order to transmit the agreement of higher level via ATM, use adaptation layer such as AAL5.The virtual connection of each AAL5 identifies uniquely by following quilt:

ATM virtual route identifier (VPI);

ATM virtual channel identifier (VCI); With

Atm port (port that message arrives).

UTRAN can comprise a large amount of interconnected RNC.Each RNC can be connected to the Node B up to 200.AAL5 connect may reside between the RNC and RNC and Node B between total interface on.Therefore, being identified at whole AAL5 channels that UTRAN uses is very complicated tasks.The present invention dynamically detects Iub and Iur interface and further detects and is used for all AAL5 channels that transmit data in the UTRAN network.

According to the embodiment of the invention, the detection of Iur interface is to handle in two steps.In order dynamically to detect two Iur links between the RNC, at first detect the identifier (RNC Id) of RNC, use RNC Id to draw two links between the RNC then.This link is corresponding to the Iur interface.RNC Id can be identified in concrete NBAP and the RNSAP message.Referring to Fig. 4, Node B 402 is used common survey report message 401, and the NBAP protocol message is reported corresponding control RNC (CRNC) 403 measurement results of being asked.Common survey report message 401 comprises the RNCId corresponding to CRNC 403.RNC Id is kept at database 404, and for example this database is positioned at monitor 107 and/or monitoring system server 108 (Fig. 1).

UMTS allows grand diversity (macrodiversity) and soft handover, wherein sends data via a plurality of economize on electricity B to UE.Transmit signal via a plurality of routes by air interface, and in the UE combination, thereby limit influence of fading and need low power level.Yet Node B can belong to different RNC 406 and 407.RNC 406 and 407 can be two kinds of logical role.For example, RNC 407 can be Serving RNC (SRNC) for drift about (drift) RNC (DRNC) and RNC 406 in logic in logic.The Iur interface connects RNC 406 and 407.SRNC 406 control informations are sent to UE and ask Radio Resources from DRNC 407.DRNC 407 only transmits the information between UE and the SRNC406.

RNSAP agreement on the Iur interface comprises the Radio Link creation facilities program (CFP), is used for setting up the resource of the grand diversity of DRNS407.Radio Link is set up request message 405 and is comprised RNC Id, can be caught this RNC Id and be sent to database 404 by the UTRAN monitoring equipment.This allows monitoring equipment is the tabulation of each the RNC compiling RNC Id in the UTRAN network.For example, as shown in Figure 5, database 404 has been updated and has known that UTRAN comprises DRNC 407 (being assigned with RNC Id-1) and SRNC 406 (being assigned with RNC Id-2).When receiving the Radio Link with RNC Id, DRNC 407 sets up request message 501, and this RNC Id is not self, RNC Id-2 for example, then message 501 is forwarded to monitoring system, allows server 108 (Fig. 1) know that the Iur link is present between DRNC 407 and the SRNC 406.If server 108 is not also known this Iur interface, then it sets up new Iur link between DRNC 407 and SRNC 406.Can dynamically identify the Iur interface in the runtime.Iur interface and RNC can be shown to the user, for example, use graphical user interface (GUI) to be presented on the work station.

Transport layer address (TLA) parameter is by the Radio Link message bearing, and for example Radio Link is set up request 601, Radio Link sets up response 602 and radio link reconfiguration submits 603 to, as shown in Figure 6.TLA has identified each Node B among the UTRAN uniquely.No matter when found TLA unique in the network by monitoring system, it is sent to database 404.Server 108 definite these TLA are associated with new node B and set up this new node B and are used for monitoring with new Iub interface.This new node B and Iub interface can be shown to the user with RNC on work station GUI.

Monitoring system can identify channel among the UTRAN by VPI in monitoring NBAP, RNSAP and the ALCAP message and VCI parameter.No matter when capture message, relatively the VPI/VCI combination is made up with known VPI/VCI and is identified new channel.When detecting new channel, upgrade monitor server 108 with new VPI/VCI channel information.Can detect channel in real time.

For the AAL5 channel on the Iur link, use the point code of RNC that channels associated is arrived correct Iur interface.In RNSAP message, the point code of RNC is present in the MTP3 layer.For the AAL5 channel on the Iub link, do not exist such information that the AAL5 channels associated is arrived correct Iub link.But the present invention uses a different framework to confirm when new Iub channel is created.When no matter when seeing the like combinations specific times of VPI/VCI on specific Iub link, then this channel is identified as the new channel of affirmation and is attached to this Iub interface.It is configurable at run duration that VPI/VCI satisfies the required number of times of the new channel of observation.

Fig. 7 has illustrated to be used to assess the flow chart of VPI/VCI combination with the method that identifies new channel.701, the monitoring processor receives NBAP, ALCAP or RNSAP message.702, from this message, extract VPI and VCI parameter, and processor structure VPI/VCI key.703, processor comparison VPI/VCI key and known VPI/VCI make up whether authenticated channel is new.704, be not new if message is RNSAP message and channel, then flow process return 701 and etc. next message to be assessed.If the VPI/VCI in the RNSAP message is used for new channel, then flow process moves on to 705 from 704.705, the point code in the RNSAP message is associated with the Iur interface.706, upgrade monitoring system server and monitor with new channel information.707, for NBAP message, if message is not new, then flow process returns 701.If the combination of the VPI/VCI in the NBAP message is new, then starts and confirm logic 708.Processor calculates the number of times of observing identical VPI/VCI key at special interface.To be observed " n " inferior when this VPI/VCI combination, and then processor is designated effectively new channel with it.706, come update service device and monitor with new channel information, and handling process is restarted 701 with next message.

Though described the present invention and advantage thereof in detail, be to be understood that and make various variations, replacement and change here and do not break away from the invention scope that limits as accessory claim.In addition, the application's scope and being not intended to is limited to the specific embodiment of processing, machine, product, content combination, device, method and the step described at specification.Should easily understand and to adopt according to the present invention as those of ordinary skills: fully carry out identical function or fully realize as the disclosure of invention, processing, machine, product, content combination, device, method or the step identical result of corresponding embodiment described herein, current existence or development afterwards.Therefore, accessory claim is intended to be included in these processing, machine, product, content combination, device, method or the step in their scopes.

Claims (17)

1, a kind of method that is used to detect the assembly of Universal Mobile Telecommunications System (UMTS) network comprises:

From network acquisition ATM message;

From the message of being caught, extract the network node identifier;

The database of this network node identifier and known network node relatively; And

If this network node identifier is uncorrelated with the known network node, then be used for the clauses and subclauses of new network node in the database increase, wherein new network node record comprises the network node identifier.

2, method according to claim 1 further comprises:

Be the message identifier receiving node of being caught, wherein said receiving node is the known network node; And

Increase new network interface clauses and subclauses at described database, wherein said new network interface clauses and subclauses are corresponding to the new network interface of the new network node of the receiving node that connects first end points and second end points.

3, method according to claim 1 further comprises:

On display, show described new network node to the user.

4, method according to claim 2 further comprises:

On display, show described new network node, receiving node and new network interface to the user.

5, method according to claim 1, wherein said new network node are the radio network controllers (RNC) in the UTRAN network; And wherein the network node identifier is the RNC identifier.

6, method according to claim 2, wherein said receiving node and new network node are radio network controller (RNC); And wherein said new network interface is the Iur interface in the UTRAN network.

7, method according to claim 1, wherein said new network node are the Node B in the UTRAN network, and described new network node identifier is the Node B identifier.

8, method according to claim 2, wherein said receiving node are radio network controller (RNC), and described new network node is a Node B, and described new network interface is the Iub interface in the UTRAN network.

9, method according to claim 1, wherein the message of being caught is that Radio Link is set up message.

10, method according to claim 1, wherein said network node identifier is the transport layer address parameter.

11, a kind of method that is used for identifying the channel of Universal Mobile Telecommunications System (UMTS) network comprises:

From network acquisition ATM message;

From the message of being caught, extract Channel Identifier;

From Channel Identifier, set up channel key;

The database that compares channel key and known channel; And

If channel key and known channel are uncorrelated, then in database, increase the clauses and subclauses that are used for new channel.

12, method according to claim 11, wherein said Channel Identifier are from by selecting the following group of forming:

Virtual route identifier (VPI);

Virtual channel identifier (VCI); And

Atm port.

13, method according to claim 11 further comprises:

New channels associated is arrived interface.

14, method according to claim 13 further comprises:

Use the point code of being caught in the message to identify described interface.

15, method according to claim 14, wherein said interface are the Iur interfaces in the UTRAN network, and the message of being caught is Radio Network Subsystem Application Part (RNSAP) message, and described point code is associated with radio network controller (RNC).

16, method according to claim 13 further comprises:

Identify described interface by the message of determining the to have channel key pre-determined number that whether from known interface, is hunted down.

17, method according to claim 16, wherein said interface are the Iub interface in the UTRAN network, and the message of being caught is node B application part (NBAP) or Access Link Control Application Part (ALCAP) message.

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