Arrangement for improving availability of services in a communication system

Description: TECHNICAL FIELD [Detailed description of the invention]

Configuration to improve the architecture of mobile communication systems Field of invention The present invention is a structure for improving the architecture of a communication system that supports mobility. It is about the formation. In particular, the present invention relates to a functional separation architecture that supports mobility. Background of the invention The present invention has been developed with respect to improving the architecture of mobile communication systems. It is. In particular, the present invention provides mobility, that is, a remote communication service to the user at any place and at any time. Introducing the ability to supply screws into communication systems in a well-structured manner It was developed for this purpose. In the present invention, the mobility function can be realized as a functionally separated layer. Show that. In other words, the present invention is a functional separation architect for communication systems that support mobility. It proposes Kucha. Current state of technology TINA (Remote Communication Information Network Architecture) Consortium (TINA95i) ) Proposed a function separation architecture for remote communication systems. -The architecture has no mobility layer at all. Where are the features that support mobility assigned? Is it in the DPE layer or in the network resource layer? Is it not clear? In addition, the TINA architecture is a user domain, terminal Not considering three domains, domain and remote communication system domain .. Problems with conventional technology Existing communication system architectures do not consider mobility as an independent layer The mobility function is either in the network resource layer or in the application / service layer. Assigned to someone. Mobility function GSM (Global Mobile System) In the first case, which is incorporated into the network resource layer like To. It is difficult to modify the mobility function without affecting the network function. is there Difficult to reuse mobility features designed for one network on another network I'm sorry. Because those mobility functions are related to network performance and technology. Because it is dense. UPT (Universal Personal Telecommunication) In the second case where mobility is treated as a service as in), the most severe drawback Has multiple mobilities in different locations, such as fixed and mobile networks The coexistence of the characteristics is that the characteristics are influenced by each other. Purpose of the invention An object of the present invention is a function separation architect for a remote communication system in question. Propose Cha, thereby supporting mobility in a much more efficient and economical way It is to be. Another object of the present invention is to provide a function of mobility and a functional layer dedicated to the mechanism. Yet another object of the present invention is any open distributed processing system (ODP) or similar. It is to introduce such mobility support into the thing. Abstract of the invention The above object is realized by the configuration proposed by the present invention. Its characteristic is It is described in the range of request. In other words, the functional separator supporting mobility for communication systems according to the present invention. Texture is proposed. In particular, this architecture has a network resource layer, a DPE layer and an application. In addition to the mobility layer, a separation function layer for mobility called a mobility layer is included. This architecture has three domains: user domain and terminal domain. And remote communication system domains are appropriate. Further features and advantages of the present invention are described in the claims and with reference to the drawings. It will be clarified by the following explanations. A brief description of the drawing FIG. 1 shows a functional separation architecture that supports mobility according to an embodiment of the present invention. It is a block diagram which shows. Detailed description of the examples Hereinafter, examples that can be realized by the present invention will be described. FIG. 1 is a schematic diagram of a first embodiment of the function separation architecture according to the present invention. This separation architecture supports and promotes the mobility of the remote communication systems involved. Includes the appropriate mobility layer to advance. The entire remote communication system consisting of users, terminals, and remote communication systems is It consists of three domains: The Domain, Terminal Domain, and Remote Communication System Domain. It is represented by the model. In each domain, various functions are incorporated into multiple functional layers due to their nature. Can be done. These layers are not in any hierarchical relationship, but are functionally separated It's just done. Objects of any layer are provided interfaces You can talk directly to any object in any other layer through. In the remote communication system domain, network resource layer, DPE (distributed processing environment) It defines five functional layers: layer, mobility layer, guarantee layer, and application layer. To. -The network resource layer is the transport used to set and open the stream flow. Contains objects that control / manage the network. DPE layer is a distributed computing infrastructure that realizes distributed transparency Includes objects of. The DPE layer provides various DPEs for the application. The mobility layer contains objects that allow mobility support. -The guarantee layer includes objects dealing with guarantee issues. -Application layer is provided by other layers to provide services to users Includes objects that utilize the functions that are used. Objects in different layers are objects in your own layer as well as objects in other layers. Also communicates with. The distinction between the application layer and the network resource layer is IN. Calls and connections introduced by the Terrigent Network) architecture It is done by the principle of separation. Objects in the network resource layer are provided from the DPE layer Use the services provided. Reciprocally, the DPE layer is the kernel transport Selectively use the network resource layer to determine the handle of the network (kTN) Can be Mobility layer is supplied from DPE layer, network resource layer and guarantee layer Use the services that are provided. Guarantee layer is supplied from DPE layer and network resource layer Use the service. Finally, the application layer releases its functionality All other layers are available. TINA-C defines only three layers: network resource layer, DPE layer, and service layer [ TIN95e] is worth noting. The architecture proposed here is TINA You can think of it as an advanced version of the texture. In the terminal domain, the network corresponds to the functional layer of the remote communication system domain. There are four functional layers: resource layer, DPE layer, mobility layer, and guarantee layer. In the terminal domain The reason why there is no application layer is that we select the use of the terminal in relation to the user. Because it does. The user domain has two functional layers, a guarantee layer and an application layer. Protect The certificate layer contains objects that help the user in assurance procedures such as authentication. To communicate with the remote communication system domain, the user domain is always the terminal domain It is worth noting that it requires a computer. In fact, the domains we are segmenting here Is an administrative domain and does not match the technical domain. Technically Two domains may be merged into one domain. But the analysis is these de It is irrelevant whether the main is a separate technical domain. User domain app The application object runs on the terminal domain. Therefore, you The relationship between the domain layer and the terminal domain layer is similar to the relationship between layers of the same domain. .. The application layer objects of the user domain are all of the terminal domain Layers can be used. Relationship between user domain layer and remote communication system domain layer, terminal domain layer And the relationship between the remote communication system domain layers is peer-to-peer. is there. For example, the network resource layer of the terminal domain is a remote communication system domain. It is possible to communicate with the network resource layer of the network, and so on. Advantages of the invention High degree of modularity and flexibility can be obtained by the proposed function separation architecture. Is done. Layers are autonomous and can be individually designed and embodied. In a certain layer No matter what internal changes you make, as long as the interface doesn't change Does not affect the layer of. Another big advantage is various network technologies such as GSM, DECT, etc. The possibility is that the mobility layer can be reused in the various communications used. -Finally, this is also important, but separate the user domain and the terminal domain. By thinking, this architecture allows one user to use several terminals Applicable when using and when several users share the same device To.<img file="JP2001521687A_D0001.tif" />