This patent application is assigned to Telefonaktiebolaget L M Ericsson (publ).
The following quote was obtained by the news editors from the background information supplied by the inventors: "In recent years, new Radio Access Technologies (RATs), network architectures and service architectures have emerged in order to enable new functionality and increased capacity in telecommunication networks. Ensuring interoperability in telecommunication networks of today is thus becoming increasingly complex. Moreover, these emerging RATs and architectures may be provided to the operators of the telecommunication networks by many different vendors. Since each RAT and/or network/service architecture may be sourced individually and/or independently from each other, more than one vendor commonly supply the network operator with network equipment, service architectures, deployment and maintenance.
"The development of a multivendor environment drives the demand for new solutions for ensuring interoperability between different RATs and service architectures. This may, for example, involve topology encapsulation, i.e. hiding the involved servers with a single point of service, in order to avoid strong relationships and entity coupling which may decrease the scalability and increase the complexity of the system. Also various dispatching functions may nowadays be needed in order to reformat and translate communication from one protocol and/or format into another.
"Although standardization is heavily applied in the field of telecommunication in order to achieve interoperability, the mobile operators are experiencing a need for efficient solutions for allowing information to be gathered and provided from one RAT and/or service architecture to another. Previously, this issue would be solved by the vendor, based on the operator's deployment requirements. This is, however, not a viable solution today due to the increased number of vendors and the increased complexity in terms of the number of RATs and architectures deployed in the operator's network. It has thus been recognized as a problem that dispatching requests from a first RAT and/or service architecture, provided by a first vendor, to a second RAT and/or service architecture, provided by a second vendor, introduces complexity and may require support for multiple redundant protocols."
In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "It is an object of the invention to address at least some of the limitations, problems and issues outlined above. It is also an object to improve the process of dispatching requests to two or more network domains. It is possible to achieve these objects and others by using a method and an arrangement as defined in the attached independent claims.
"According to one aspect, a method for performing domain resolution prior to dispatching a request, performed by a network node, is provided. A request is received, at the network node, from an Application Server (AS). The AS and the network node are present in a first network domain. At least one target network domain is determined based on at least one domain indicator in the request. The domain indicator is associated with at least a part of the request. The target domain is one of a first network domain and a second network domain. The at least part of the request is dispatched to a subscriber server which is present in the determined target network domain(s).
"According to another aspect, a domain resolution unit adapted to perform domain resolution prior to dispatching a request, is provided. The domain resolution unit comprises a receiving unit which is adapted to receive a request from an AS. The AS and the domain resolution unit are present in a first network domain. The domain resolution unit further comprises a determining unit which is adapted to determine at least one target network domain based on at least one domain indicator in the request. The domain indicator being associated with at least a part of the request. The target domain is one of a said first network domain and a second network domain. The domain resolution unit further comprises a dispatching unit which is adapted to dispatch, at least part of the request, to at least one subscriber server which present in the determined target domain(s).
"The above method and arrangement may be configured and implemented according to different embodiments. In one example embodiment, the received request comprises a first domain indicator which may be indicating the first network domain, and a second domain indicator which may be indicating the second network domain. The request may be divided into a first sub-request associated with the first domain indicator. The first sub-request may be dispatched to a subscriber server present in a first network target domain, and a second sub-request associated with said second domain indicator, wherein the second part may be dispatched to a subscriber server present in the second target network domain.
"According to another possible example embodiment, one or more responses to the dispatched sub-requests are received from two or more domains and the received responses are aggregated to form a common single response, to the AS, from two or more domains.
"According to another possible example embodiment, the domain indicator may be one of a data reference or a domain request.
"According to another possible example embodiment, the first and second network domain may be one of IP Multimedia System (IMS), General packet radio service (GPRS) network, Evolved Packet Core (EPC) network or Circuit Switched (CS) network.
"According to another possible embodiment, the domain resolution function and its related arrangement may reside in, or be co-located with, a Subscriber Location Function (SLF) and/or a Diameter Proxy Agent.
BRIEF DESCRIPTION OF DRAWINGS
"The invention will now be described in more detail by means of exemplary embodiments and with reference to the accompanying drawings, in which:
"FIG. 1 is a block diagram illustrating a request from an application server, the request is dispatched to a subscriber server by a domain resolution function, according to one example embodiment.
"FIG. 2 is a block diagram illustrating a request from an application server which is divided into sub-requests before it is dispatched to multiple-domains, according to one example embodiment.
"FIG. 3 is a block diagram illustrating a domain resolution function which is co-located with a Subscriber Locator Function, according to one example embodiment.
"FIG. 4a is a flow chart illustrating a procedure for dispatching a request into a target domain, according to one example embodiment.
"FIG. 4b is a flow chart illustrating a procedure for dividing a request into sub-requests which are dispatched into multiple target domains, according to one example embodiment.
"FIG. 5 is a block diagram illustrating an arrangement for dispatching a request into a target domain, according to further example embodiments.
"FIG. 6 is a block diagram illustrating an arrangement in a network node, according to one example embodiment."
URL and more information on this patent application, see: Hegarty, Cormac;
Keywords for this news article include: Telecommunications, Telefonaktiebolaget L M Ericsson (publ).
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