Query processing in a mobile communications system home location

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A communications system query processing element, for example a home location register for a mobile communications system, includes a plurality of application processors. First data such as permanent data relating to a plurality of mobile subscribers (subscription information etc.) is available at all application processors, whereas second data such as temporary data relating to the plurality of subscription is partitioned between the application processors. Queries are allocated via a transaction bus to an available application processor. If it is not the correct one for the subscriber originating the query, it is redirected via the transaction bus. This arrangement permits a linear growth in terms of database to be achieved with increasing numbers of subscribers by the addition of application processors as necessary and in a manner not involving a processing bottleneck.

patent: 5054110 (1991-10-01), Motorola
IEE Journal on Selected Areas in Comunications. vol. 7 No. 3 Apr. 89. pp. 418-423. K. Murakami et al. `Control Architecture for Next-Generation Communication Networks Based on Distributed Databases`.
IBM Technical Disclosure Bulletin vol. 33 No. 12, May 1991 pp. 113-120 Armonk (US) `Technique for Replicating Distributed Directory Information`.
International Switching Symposium 1990 vol. 6, 28 May 1990, Stockholm (SE) pp. 161-167 M Wizgall et al `The ISDN Approach for Mobile Radio`.


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