Telecommunications – Radiotelephone system – Including personal numbering system
Reexamination Certificate
1999-10-05
2001-08-14
Maung, Nay (Department: 2681)
Telecommunications
Radiotelephone system
Including personal numbering system
C455S456500, C455S560000
Reexamination Certificate
active
06275709
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an arrangement for improving availability of services in a communication system, especially a telecommunication system, said system comprising distributed hardware and software components which interact in order to provide services to one or more users.
BACKGROUND OF THE INVENTION
The rapid expansion of digital cellular telephone expresses an urgent demand for mobility from the users and the necessity of the mobility support for telecommunication systems. Both ODP and TINA-C define the mobility support as an important requirement. However, both ODP and TINA-C assume in their original framework that the support of mobility is considered as a consequence of the support of the other distribution transparencies and, therefore, does not require any additional functions and mechanisms in the Distributed Processing Environment (DPE).
The present invention has been developed on the basis that access and location transparencies are not sufficient for supporting terminal and personal mobility. The main development of the present invention is based on considering mobility as an additional transparency and in order to do so there is according to the present invention proposed a Functional Separation Architecture wherein the mobility functions are separated from the network layer and the application (service) layer and grouped into a separate layer called the mobility layer.
The present invention has for its main object to suggest an implementation of realising such mobility layers, especially in connection with a so-called Generic Mobility System (GMS), whereby such a GMS will be designed and then introduced in the architecture transparency, i.e. applications although supported by the GMS are not aware of its existence.
STATE OF THE ART
The existing development environments and platforms for distributed systems such as for example CORBA [Objb] do not address mobility. In order to design mobile applications, i.e. applications that are available for mobile users, the application designer must consider, design and implement all the necessary mobility functions. This is avoided by using the GMS.
PROBLEMS RELATED TO PRIOR ART
The design and implementation of mobile applications are quite difficult since the application must deal with the mechanisms and function related to mobility which are complex, numerous and also time-consuming to implement. Further, the implementation of mobility functions by different persons for different applications at different places may lead to conflict and unwanted interactions.
On the other hand, quite a lot of efforts are required to make existing fixed-applications mobile.
OBJECTS OF THE PRESENT INVENTION
An object of the present invention is to propose a Generic Mobility System incorporating all the mechanisms and functions necessary to support mobility.
SUMMARY OF THE INVENTION
The above objects are achieved in an arrangement as stated in the preamble which according to the present invention is characterised by the features as stated herein and specifically n the enclosed patent claims.
Further features and advantages of the present invention will appear from the following description taken in conjunction with the appending drawing.
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Nofal et al, “A Simulation Study of Generic Broadband Wireless Integrated Networks”, IEEE Symposium on Personal, Indoor, and Mobile Radio Communications, vol. 1, Oct. 18, 1996, pp. 168-172.*
Do et al, “Making Mobility Transparent to the Applications”, IEEE 46th Vehicular Technology Conference, vol. 3, May 1, 1996, pp. 1825-1829.*
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Maung Nay
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson
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