SOA-based integration of wireless technology management information system-SOA,
Status quo With the continuous development of IT technology, and radio management information needs, the State Radio Monitoring Center continue to develop and build a number of radio management information systems, information systems can basically work well to complete the corresponding task on the radio management has played a significant role in promoting.
However, due to some historical and technical reasons, these information systems can only deal with the information system itself, can not be better for a number of systems data and information exchange, and thus the so-called "information island" phenomenon . "Information island" phenomenon, not only the formation of the global nature of the information is difficult to report, but from different systems of the same type of information is also often not compatible with so many problems.
An urgent need to improve the performance of information systems in collaboration
Multiple information systems to improve the performance of Internet collaboration, we must analyze "information island" Causes. In the process of building information system an "information island" for two reasons:
(1) radio management in early stage information technology, radio monitoring center to establish the radio management system is relatively small and the data from these systems and information are relatively small, collaborative information system needs of small, even if the need interact, but also by system developers to decide on specific ways to complete the interaction;
(2) different information systems, the cycle is not entirely uniform, which also led to difficult to ensure the balance between multiple systems;
(3) in the initial information, subject to restrictions on computer technology, using different tools for different development languages or using different structural models of heterogeneous information systems, information exchange between systems is very difficult to complete.
With the continuous development of various information systems and use of information exchange between systems has become increasingly difficult, the information system "fragmented" approach brings the development of more and more problems. Over time, a lot of information or the formation of islands, or in a large number of complex information systems interface between the establishment and processing. In theory, n a information systems may need up to n (n-1) / 2-port to meet the interactive needs. If you add a system, you may need to create n-interface to existing systems of information processing and interactive work.
Can be more intuitive example to illustrate, suppose that the business needs of the different stations were built, frequency, equipment and Antenna Four management information systems, the four systems is obviously the need for information exchange, Dalian Road work. Figures 1 and 2, respectively, two information systems that interact difficulties.
2 How to integrate multiple information systems
So, how to improve the interoperability between multiple information systems and collaborative performance management for the radio provide a comprehensive and scientific information? In response, industry experts for their constructive comments. One is called SOA (ServicesOrientedArchitecture, service-oriented architecture) technology concern.
2.1 What is SOA Before in the interpretation of what is SOA, first give services (Services) for a definition: information system services, is the result of a package, reusable applications or components, these systems or components to the other information system provides valuable data or information. For a system in need of services, it does not care about how services are implemented, as long as the service can respond to its request for an order and it provides accurate and reliable data on it.
SOA is a software system architecture, its proposal is to address in a network environment, how to connect a variety of information services to provide systems or components to meet the needs of information systems integration. Therefore, SOA is a notable feature: the SOA platform, for a particular information system is concerned, all other information systems can provide certain information as a service.
2.2SOA advantage Reason why we need SOA, because it allows us in building the radio management system, you can pay more attention to the radio management, business process itself rather than the underlying information systems infrastructure and technology.
SOA can bring a lot of convenience:
(2) can be a good package of heterogeneous systems, without affecting the performance of information exchange;
(3) service interface can remain unchanged under the premise of other systems to achieve a smooth upgrade and replacement;
(4) can reuse the development and deployment of information systems to avoid waste of resources and duplication.
2.3SOA implementation SOA's advantages are more obvious, so how in the construction of information systems to achieve these functions?
(1) formal use of ESB In form, we can build ESB (EnterpriseServicesBus, enterprise service bus) to be achieved.
So-called ESB, Internal information systems is to provide information as a service, and ESB as a data cable to the various information systems within the enterprise (or service) cascaded together to build from an information exchange platform to enable information system based on this platform can be a simple and convenient to carry out information exchange between systems.
Example, suppose there are now four in the use of information systems: the station, frequency, equipment and antenna systems, each information system and the ESB were to establish a standard interface for information exchange, and thus the information systems no longer need to create a variety of interfaces, shown in Figure 3. Figure 3, after the establishment of the ESB, only four interfaces can be achieved between the four information systems data and information exchange, while the former are most likely to need to build six interfaces. This advantage to increase the information systems more apparent. For example, increased an information system, establishment of ESB, you may need to set up another four interfaces to meet the new system and has four interactions between systems. If using the ESB technology, simply add the system and the establishment of an Interface between ESB.
In addition, ESB can also be an application software system, but it is mainly to meet the information systems accurate and efficient information exchange exists.
ESB's main work flow is this: If an information system needs some other information services, it does not attempt to provide services to other systems may be a request, but sent this message directly to the ESB service request ESB based on the requested information service
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