CN101466109A - Communication system and method for WiMAX network management - Google Patents
Communication system and method for WiMAX network management Download PDFInfo
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Abstract
The invention discloses a communication system for the WiMAX network management and a method thereof. The system includes a WiMAX network management system and a WiMAX element management system; wherein, an MOM server is connected between the WiMAX network management system and the WiMAX element management system; a theme management module and a queue management module are arranged in the MOM server; wherein, the queue management module is used for storing and transmitting the information between the WiMAX network management system and the WiMAX element management system; and the theme management module is used for storing and transmitting the information between at least two WiMAX network management systems and at least two WiMAX element management systems. The invention also discloses a communication method for the WiMAX network management; by the asynchronous transmission mode, the transmission of the WiMAX network management information is strengthened; and the information can be sent to a plurality of users at the same time by utilizing the MOM theme transmission mechanism, so as to facilitate the expansion of the network management function.
Description
Technical field
The present invention relates to communication technical field, be meant a kind of communication system and method for WiMAX network management especially.
Background technology
The modern network administrative skill has become the key technology that network technology is used and developed, and it has directly determined service quality and the function that network can provide, and has become the requisite assurance of the good operation of network.In order to accelerate to advance the construction and the operation of WiMAX network, linked groups such as WiMAX Forum and IEEE are promptly carrying out the research and the revision of WiMAX network management standard, have obtained certain achievement at present.
The successively issue of IEEE 802.16 working groups IEEE802.16g standard, IEEE 802.16f standard and IEEE 802.16i draft standard, the former has carried out standard to function, flow process, agreement and the primitive of WiMAX control and management plane, and latter two standard has been carried out specific definition to the management information bank (MIB) of WiMAX system.
WiMAX Forum is intended to coordinate the broadband wireless technology in the global range, promotes the development of WiMAX industrial chain.WiMAX Forum is divided into a plurality of working groups, successively issue relevant criterion such as WiMAX network management requirement standard and WiMAX network reference model.
Yet no matter be IEEE 802.16 working groups or WiMAX Forum working group, formulation for the WiMAX network management standard is perfect not enough at present, especially for the definition and the realization of WiMAX network management northbound interface, the two is not all stipulated, IEEE 802.16 working groups mention and can adopt SNMP, CORBA and based on the plurality of communication schemes such as network management of WEB.
SNMP (Simple Network Management Protocol) is a kind of NMP of being responsible for exploitation by Internet engineering duty group (IETF), because it realizes simple, fast development along with Internet, obtained at present using widely, become the data communication network de facto standards.Through updating, its standard has developed into the SNMPv3 version from the SNMPv1 version.Comparatively speaking, SNMP has 2 main advantages: structure of management information and the management information bank of (1) SNMP are very simple, thereby exploitation realizes being very easy to.(2) snmp protocol moves for a long time on Internet, has many rich experiences to use for reference.Yet by analysis and research to snmp protocol, when we are not difficult to find it as WiMAX network management communication protocol, exist significant disadvantages and deficiency: (1) SNMP is based on the initiatively webmaster mechanism of poll, the synchronous communication pattern of this request-response (is inquired one, awaiting acknowledgement, inquiry is next then) cause webmaster to handle slowly, there is the operating lag that is difficult to accept, especially at the catenet of this centralized management of WiMAX, its performance impact to network itself is very big; (2) grouping of SNMP can only be carried the data of finite length, and its transmission to large data and file has to finish by segmentation and combination, causes the utilance of bandwidth resources not high, and the network management system handling property obviously descends; (3) the Trap message of SNMP does not have affirmation mechanism, and in particular cases, as when UDP/IP is used for message transmission, whether crucial Trap message successfully arrives management work station, and transmit leg is not known, and does not have specific retransmission mechanism to ensure; (4) this centralized network ma nagement mode of SNMP, when it being carried out the network management function expansion, it can only obtain data necessary information by NMS network management center, is unfavorable for upgrading and the functions expanding of third party to the WiMAX network management system.
CORBA (Common Object Request Broker Architecture) the initial proposition of technology is the needs that calculate for the distributed objects that satisfies on heterogeneous platform, and be not at network management task, but when being applied to network management, has specific advantage.Use the network management system of CORBA, combine object-oriented and distributed treatment technology well, its architecture has solved the problems such as reusability, portability and interoperability of object well, has solved the problem of multisystem coexistence in the present webmaster effectively; Use CORBA makes the application program based on the server end of object model, can realize load balancing between a plurality of servers, can utilize system hardware resources more fully.Yet when the WiMAX network management system adopts corba interface, it exists following unsatisfactory places equally: IEEE 802.16f and IEEE802.16i standard define because the information model of WiMAX network management is based on (1), its model that adopts is the SMI model based on SNMP, and the ORB of Object Request Broker of CORBA adopts interface description language IDL (InterfaceDescription Language) that managed object is described and encapsulates, its problem that realizes the WiMAX network management mainly concentrates in the design of SNMP/CORBA gateway, the design of this gateway does not also have ripe product and technology at present, has certain complexity in the realization; (2) coupling of CORBA structure is stronger, require the server end of CORBA and client have clear and definite of the same type, with the peer protocol (being ORB) of framework, employing GIOP/IIOP finishes the communication between the communication entity between the while ORB, has higher application threshold and relative limited environment for use; (3) for this centralized network ma nagement architectural framework of WiMAX, network management center has special data processing module and application management program, architecture by this object-oriented of CORBA and distributed treatment technology realizes that the WiMAX northbound interface manages the mutual of information and data, make that design and implementation procedure are complicated, do not utilize the exploitation of WiMAX network management system and application fast.
That Web Service has is distributed, cross-platform, by web access, reusable, have good characteristics such as encapsulation, when it and network management combine, have remarkable advantages such as distributed, ease for maintenance and platform-neutral.Yet by analyzing the structured flowchart of Web Service, we know that the server of Web Service should be the NMS network management center that is positioned at the WiMAX network management system, for the Web Service client that is dispersed in various places, can be easily carry out operations such as the basic configuration of webmaster and fault inquiry by browser, be positioned at northbound interface between NMS and a plurality of EMS for the WiMAX network management system, WebService but seems powerless to the transmission of network management information with exchange.
Adopt SNMP, CORBA or in the WiMAX network management, use based on the network management model of Web Service, exist Message Processing slow, the time prolong, be unfavorable for the expansion of network.
Summary of the invention
In view of this, the invention reside in communication system and method that a kind of WiMAX network management is provided, use SNMP, CORBA in the above-mentioned WiMAX network management or during to solve based on the network management model of Web Service, exist Message Processing slow, the time prolong, be unfavorable for the problem of the expansion of network.
For addressing the above problem, the invention provides a kind of communication system of WiMAX network management, comprising:
The WiMAX NMS WiMAX Element management system of unifying, described WiMAX NMS are unified and are connected the MOM server between the WiMAX Element management system, in the described MOM server Subject Manager module, queue management module are installed;
Described queue management module is used to store transmits unify message between the WiMAX Element management system of WiMAX NMS;
Described Subject Manager module is used to store unify message between at least two WiMAX Element management systems of at least two WiMAX NMSs of forwarding;
Preferably, described MOM server also connects the JNDI server,
Described JNDI server is used to preserve address and the corresponding Subject Manager module and the queue management module address of at least two MOM servers;
Described JNDI server connects unify WiMAX Element management system and the visit of described address is provided of described WiMAX NMS.
Preferably, the ftp server that connects described WiMAX Element management system is installed in the described WiMAX network management system;
In the described MOM server XML protocol converter is installed also, is used for the WiMAX NMS data of transmission of unifying between the WiMAX Element management system mutually are converted to the XML formatted data and transmit.
Preferably, described MOM server is two when above, also comprises in the described MOM server:
Backup module is used to store Subject Manager module and the interior message of queue management module in each MOM server that is connected.
The present invention also provides a kind of communication means of WiMAX network management, comprising:
WiMAX network management system or WiMAX Element management system are sent to the MOM server with message;
The queue management module of described MOM server is sent to corresponding WiMAX network management system or WiMAX Element management system with described message, or the Subject Manager module of described MOM server is sent to plural WiMAX network management system or WiMAX Element management system with described message.
Preferably, described MOM server also connects the JNDI server,
Described JNDI server is used to preserve address and the corresponding Subject Manager module and the queue management module address of at least two MOM servers;
Before described WiMAX network management system or WiMAX Element management system send described message, obtain described MOM server and corresponding Subject Manager module and queue management module address by described JNDI server.
Preferably, described MOM server is two when above, also comprises in the described MOM server:
Backup module is used to store Subject Manager module and the interior message of queue management module in each MOM server that is connected;
In the above-mentioned message transmitting procedure, if the MOM server that described WiMAX network management system or WiMAX Element management system connect breaks down, described WiMAX network management system or WiMAX Element management system select the MOM server of carrier wave optimum to connect, obtain the message of preserving in the backup module, resend.
Describe system and method for the present invention above in detail, this system has the following advantages:
No matter 1: by the asynchronous message transmission mode of MOM, the sender of the message only need send to message-oriented middleware with message, fully the state of message recipient; Equally, message recipient directly obtains message from the MOM server, need not consider sender's process; This asynchronous transfer mode has been strengthened the transmission of WiMAX network management information greatly.
2: the mode of having utilized transmission of messages and file transfer, less demanding for those real-times, the management data that capacity is bigger, mode by FTP is transmitted, can effectively utilize bandwidth, reduce the amount of redundant information of the caused message header of management information frequent transmission, improved the bandwidth availability ratio of WiMAX network management system greatly.Simultaneously, the unified mode of XML that adopts of management information is explained, and has effectively shielded the management information institutional framework difference of bottom, helps the parsing and the reception of management information.
3: based on the WiMAX network management northbound interface of JMS, no matter be sender or recipient, all has the acknowledgement mechanism after message sends and receives, thisly reply the automatic-answering back device that to adopt JMS client and server end, also can manually reply, strengthen the successful transmission of network management information.Simultaneously, the persistence attribute Persistence of queue message and the Durable attribute of theme message, even can ensure under the situation that the consumer is not online or break down and also can receive the message that sends to it, this transmission mechanism has improved the correct probability of acceptance of message greatly, has significantly improved the performance of WiMAX network management system.
4: utilize the theme transmission mechanism of MOM, message can send to a plurality of users simultaneously, has broken through the restriction of transmission one to one of traditional network management system management messages.In the traditional network management system,, can only pass through network management center, extract data, can increase new management function from network management center to the exploitation and the expansion of webmaster application program.And utilize the WiMAX network management system of JMS, and by the transmission of messages mechanism of one-to-many, can expand the new function of network management system easily, increase new application, help exploitation and the upgrading of third party to network management system.Simultaneously can on the basis of same WiMAX webmaster framework, set up the multiple network management center according to the needs of operation management.As carry out performance, alarm and the configuration management function of WiMAX a network management center, carry out in another network management center and charge and safety management function, and needn't do very big change the framework of whole WiMAX network management system.
Description of drawings
Fig. 1 is a WiMAX Network Management Function architecture sketch;
Fig. 2 is the JMS architectural schematic;
Fig. 3 is a WiMAX webmaster northbound interface block diagram;
Fig. 4 is a WiMAX performance data collection northbound interface communication flow diagram;
Fig. 5 is the WiMAX network management northbound interface block diagram of redundant MOM.
Embodiment
For clearly demonstrating the scheme among the present invention, provide preferred embodiment below and be described with reference to the accompanying drawings.
The network management structure figure of WiMAX as shown in Figure 1, wherein, be IF1 interface (being northbound interface) between network management system (nms) and the Element management system (EMS), it between NMS and the NES IF2 interface, it between EMS and the NES IF3 interface, IF3 is the interface between EMS and the managed device, and IF2 is the direct-connected interface between NMS and the managed device.
For realizing the message transmission of northbound interface, the present invention adopts the JMS framework to be used for the transmission of message, its structure as shown in Figure 2, the JMS framework adopts the MOM server, and in server, add the forwarding that Subject Manager module and formation module are used for message, i.e. theme manager among Fig. 3, queue management device.
In the network management structure of WiMAX, adopt the JMS framework to realize unify forwards between the WiMAX Element management system of WiMAX NMS, NMS and EMS all as the client of JMS, manage transmission of Information by MOM (JMS Provider) middleware.As shown in Figure 3, what message was effectively managed is formation and Subject Manager module among the message-oriented middleware MOM, and this administration module is mainly used to create as required formation and theme, and the transmission and the reception of message managed.The division of formation and theme is to distinguish according to the different messages kind of different management functions and transmission equally, strives that the message that reaches same kind transmits in same formation and theme.Formation and theme are divided into configuration, performance, fault, safety, charging five big management domains, different formation and the themes of management in each management domain, for example the management resource configuration data is uploaded message queue and theme, the formation of patrol task issuing message and theme etc. in the configuration management territory; Similarly, other management domains are managed corresponding with it message queue and theme respectively.
Can distinguish substantially the message kind according to formation and Subject Manager module.The difference of formation and theme is that mainly the message in the formation can only be received by a consumer, receives just and is removed, and the message in the theme can be subscribed to by a plurality of consumers.
Because different message kinds has different message formats and message content, should comprise different contents such as strategy numbering, harvester title, node device title, action purpose, parameter set, performance index group #, performance index item numbering, acquisition interval, object instance numbering as performance collection policy distribution message at performance management.Distinguish for different types of message, can be achieved by dual mode, a kind of mode is to increase specific message attributes in message header at the application-specific of WiMAX network management, effectively distinguish the message kind by this message attributes, reach fast resolving with this to message, for example, by increasing manage_style and two kinds of message attributes of manage_target in the message header, the obstructed management function of the different value representatives of manage_style, as value is 1 to represent configuration management, and value is 2 to represent performance management, and value is 3 to represent fault management, value is 4 to represent safety management, and value is 5 to represent accounting management or the like; The different values of manage_target, represent the concrete organize content below the different management functions respectively, as when the manage_style value is 3, the manage_target value is 1 to represent warning information to upload message, the manage_target value is 2 to represent warning strategies issuing message or the like, and other by that analogy.Another kind of mode is to distinguish by content and the form of XML, different content by XML reaches the correct differentiation to the message kind, this kind mode can be distinguished after need resolving message body, because different message kind, its XML has different contents and different forms, by resolving the XML form of message body, can learn this message kind.In the actual design process, can as required dual mode be used in combination.
Undertaken by message in the process of transfer of data, transmit two kinds of data, a kind of is file type data, and a kind of is non-file type data.File type data is mainly used in translation profile, business datum file, office data file, it is big to patrol and examine data capacity such as command file, and it is not very high management information that real-time requires.EMS can carry out directly uploading and downloading of document by the ftp server of WiMAX network management center, and the WiMAX Element management system only need just pass through MOM after downloading and uploading end, reports to NMS with the form of message.Document title, ftp server account number and password untill further notice information that same NMS also can download from ftp server with the form notice EMS of message;
Non-file type data is used for various real-time mutual control informations such as transmitting warning information, resource allocation information.For the ease of reading of information, two types data all adopt the form of XML to explain.For the message format that transmits among the MOM, adopt the text message type of stipulating in the JMS standard to transmit.
XML (eXtensible Markup Language, extend markup language) is an open standard of data representation, it has defined the standard of exchanges data, the machine-independent hardware platform of this standard, operating system, provider and programmed computer technology and development language can customize according to particular demands in exchange both sides or some industries.Characteristics such as that XML has is structural, extensibility, self descriptiveness.Provide the detailed clear and definite definition of XML document with XML Schema pattern.It supports the data type of many complexity, and the XML document of XML Schema constraint is arranged, and has higher validity, and content structure is also more rigorous.
The data of transmitting in the WiMAX northbound interface need convert the form of XML to, analyze explanation at the different situations of WiMAX Element management system below.For the WiMAX Element management system that adopts SNMP communication protocol, need the gateway module of an XML/SNMP.The effect of this gateway is the parameter of managed object and attribute are changed into corresponding XML form, with the management information transmission that makes things convenient for northbound interface and the message pick-up of WiMAX network management center.
WiMAX Element management system for adopting producer's proprietary protocol and managed device to communicate needs an XML conversion module equally, to finish the managed object information translation is become the XML format file.Carry out direct-connected managed device for those by WiMAX network management center, need that then the managed object parameter directly is organized into the XML form and transmit.
The JMS framework also is connected with the JNDI server, be used to provide binding by pipe names of resources and object, JMS client among the WiMAX can be created to the connection of MOM server by the connection factory of JNDI server, and the destination by JNDI obtains can carry out after the destination address of formation and theme the transmission and the reception of message.When creating a formation and theme, just the JNDI server is preserved its relevant information, as queued name, subject name, destination, message kind or the like.When the JMS client need send and receive message, at first arrive the relevant resource information of JNDI server lookup, find corresponding queues or theme, just can be created to the connection of MOM server then, carry out uploading and receiving of message.
Based on above-mentioned network system, the JMS client can comprise referring to Fig. 4 at the flow chart that carries out interacting message:
WiMAX network management center sends the respective queue of a performance acquisition strategies message in the MOM server by the JMS client, and MOM gives response message of network management center's client after receiving message, successfully receives with notice network management center message.The purpose that sends response message is to make things convenient for network management center to confirm whether this message successfully arrives MOM, to confirm whether to need to retransmit this message;
The JMS client of WiMAX Element management system obtains message from the formation of MOM server then, and after message successfully received, the WiMAX Element management system was removed and put in order message to make things convenient for the MOM server response message of MOM server;
After the WiMAX Element management system is collected the management of performance parameter there from managed device, generate performance data files by the XML transducer, directly upload to the ftp server of WiMAX network management center, send a FTP and upload the notification message that finishes to the MOM server;
The WiMAX network management center finishes by learning that from the notification message of MOM acquisition performance data is uploaded, so directly obtain corresponding performance data from ftp server, further handles and uses.
Elaborated the structure of this system and message, the data transmission procedure of this system of employing above, system of the present invention also can adopt a plurality of MOM servers to form redundancy, improves the security performance of system, as shown in Figure 5.
The JMS client of WiMAX network management center is connected with a plurality of MOM servers simultaneously, for the JMS client in other the WiMAX Element management system, carrier-quality with message transfer is selected the MOM server nearby, sometimes, need unify to assign to the JMS client of all connections in order to reach load balancing to whole M OM server; And for the MOM server, theme that wherein comprises and queue message then are divided into two set according to transmission state, Active Set, and the formation in this set and theme message are the message of the JMS client of communicating by letter with it; Another is the backup set by the backup module management, what preserve in this set is the message (formation and the theme message in the Active Set of other MOM servers just) of the JMS client of directly not communicating by letter with this MOM, for this MOM server, the message in these formations and the theme is in unactivated state.Theme in the backup set and message need periodic and other MOM servers carry out the renewal of backup messages state, with the message variation of reflection MOM server.
Manage the shunting of message by a plurality of MOM servers, can reduce single MOM load of server greatly, effectively improve the performance of WiMAX network management system.The mutual back mechanism of message of this many MOM server simultaneously can ensure that whole network management system can not interrupt because of certain MOM server breaks down.As MOM () when breaking down, JMS client in the WiMAX Element management system that is attached thereto is searched for other MOM server, select a higher MOM server of carrier-quality to connect, because formation and theme message that MOM (two) and MOM (three) server are all preserved Active Set in MOM () server, so can returning to previous state rapidly, the JMS client in these WiMAX Element management systems carries out message communicating, can there be bigger communication failure and communication delay, and for MOM (two) and MOM (three) server, JMS client formation in the WiMAX Element management system that also only needs newly to connect with it and theme message find out from backup set and become state of activation and get final product, do not need to do big configuration change, the fast quick-recovery that helps fault can not influence the normal operation of whole WiMAX network management system.
Describe system and method for the present invention above in detail, this system has the following advantages:
No matter 1: by the asynchronous message transmission mode of MOM, the sender of the message only need send to message-oriented middleware with message, fully the state of message recipient; Equally, message recipient directly obtains message from the MOM server, need not consider sender's process; This asynchronous transfer mode, strengthened the transmission of WiMAX network management information greatly, avoided the caused webmaster of " poll " and the method for synchronization to handle slowly, this makes and adopts the WiMAX network management system of JMS mode can manage catenet concentratedly, has significantly improved the performance of WiMAX network management.
2: the mode of having utilized transmission of messages and file transfer, less demanding for those real-times, the management data that capacity is bigger, mode by FTP is transmitted, can effectively utilize bandwidth, reduce the amount of redundant information of the caused message header of management information frequent transmission, improved the bandwidth availability ratio of WiMAX network management system greatly.Simultaneously, the unified mode of XML that adopts of management information is explained, and has effectively shielded the management information institutional framework difference of bottom, helps the parsing and the reception of management information.
3: based on the WiMAX network management northbound interface of JMS, no matter be sender or recipient, all has the acknowledgement mechanism after message sends and receives, thisly reply the automatic-answering back device that to adopt JMS client and server end, also can manually reply, strengthen the successful transmission of network management information.Simultaneously, the persistence attribute Persistence of queue message and the Durable attribute of theme message, even can ensure under the situation that the consumer is not online or break down and also can receive the message that sends to it, this transmission mechanism has improved the correct probability of acceptance of message greatly, has significantly improved the performance of WiMAX network management system.
4: utilize the theme transmission mechanism of MOM, message can send to a plurality of users simultaneously, has broken through the restriction of transmission one to one of traditional network management system management messages.In the traditional network management system,, can only pass through network management center, extract data, can increase new management function from network management center to the exploitation and the expansion of webmaster application program.And utilize the WiMAX network management system of JMS, and by the transmission of messages mechanism of one-to-many, can expand the new function of network management system easily, increase new application, help exploitation and the upgrading of third party to network management system.Simultaneously can on the basis of same WiMAX webmaster framework, set up the multiple network management center according to the needs of operation management.As carry out performance, alarm and the configuration management function of WiMAX a network management center, carry out in another network management center and charge and safety management function, and needn't do very big change the framework of whole WiMAX network management system.
For the system and method for being set forth among each embodiment of the present invention, within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1, a kind of communication system of WiMAX network management, the WiMAX NMS WiMAX Element management system of unifying, it is characterized in that, described WiMAX NMS is unified and is connected the MOM server between the WiMAX Element management system, in the described MOM server Subject Manager module, queue management module is installed;
Described queue management module is used to store transmits unify message between the WiMAX Element management system of WiMAX NMS;
Described Subject Manager module is used to store unify message between at least two WiMAX Element management systems of at least two WiMAX NMSs of forwarding.
2, system according to claim 1 is characterized in that, described MOM server also connects the JNDI server,
Described JNDI server is used to preserve address and the corresponding Subject Manager module and the queue management module address of at least two MOM servers;
Described JNDI server connects unify WiMAX Element management system and the visit of described address is provided of described WiMAX NMS.
3, system according to claim 1 is characterized in that, the ftp server that connects described WiMAX Element management system is installed in the described WiMAX network management system;
In the described MOM server XML protocol converter is installed also, is used for the WiMAX NMS data of transmission of unifying between the WiMAX Element management system mutually are converted to the XML formatted data and transmit.
4, system according to claim 1 is characterized in that, described MOM server is two when above, also comprises in the described MOM server:
Backup module is used to store Subject Manager module and the interior message of queue management module in each MOM server that is connected.
5, a kind of communication means of WiMAX network management is characterized in that, comprising:
WiMAX network management system or WiMAX Element management system are sent to the MOM server with message;
The queue management module of described MOM server is sent to corresponding WiMAX network management system or WiMAX Element management system with described message, or the Subject Manager module of described MOM server is sent to plural WiMAX network management system or WiMAX Element management system with described message.
6, method according to claim 5 is characterized in that, described MOM server also connects the JNDI server,
Described JNDI server is used to preserve address and the corresponding Subject Manager module and the queue management module address of at least two MOM servers;
Before described WiMAX network management system or WiMAX Element management system send described message, obtain described MOM server and corresponding Subject Manager module and queue management module address by described JNDI server.
7, method according to claim 6 is characterized in that, described MOM server is two when above, also comprises in the described MOM server:
Backup module is used to store Subject Manager module and the interior message of queue management module in each MOM server that is connected;
In the above-mentioned message transmitting procedure, if the MOM server that described WiMAX network management system or WiMAX Element management system connect breaks down, described WiMAX network management system or WiMAX Element management system select the MOM server of carrier wave optimum to connect, obtain the message of preserving in the backup module, resend.
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2009
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