Maintaining group data in a mobile communications system
First Claim
1. A method for maintaining group data relating to a communication group in a mobile communications system comprising a plurality of exchanges having connection through base stations with subscribers at least some of which belong to said communication group, said exchanges incorporating respective databases, said method comprising the steps of:
- selecting one of said exchanges as a main exchange in the database of which a master copy of group data of the communication group is maintained;
maintaining information in the database of said selected main exchange;
on exchanges of a fixed distribution area, said group data being stored in the databases of these exchanges irrespective of the location of the subscribers,on exchanges of an enlarged distribution area, said group data being stored in these exchanges if subscribers belonging to said communication group register under said exchanges, andon exchanges of a current enlarged distribution area, subscribers of said communication group being currently registered under these exchanges;
storing said group data in the databases of the exchanges of said fixed distribution area; and
storing said group data in the databases of the exchanges of said current enlarged distribution area.
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Accused Products
Abstract
A method and a mobile communications system for maintaining group data relating to a communication group in a mobile communications system including a plurality of exchanges. To optimize the management of group data, one of the exchanges is selected as a main exchange, in the database of which a master copy of group data of the communication group is maintained. Information is maintained in the database of the selected main exchange on exchanges of a fixed distribution area. The group data are stored in the databases of these exchanges irrespective of the location of the subscribers. Information is maintained on exchanges of an enlarged distribution area. The group data are stored in these exchanges if subscribers belonging to the communication group register under the exchanges. Information is maintained on exchanges of a current enlarged distribution area. Subscribers of the communication group are currently registered under these exchanges. The group data are stored in the databases of exchanges of the fixed distribution area, and the group data are stored in the databases of exchanges of the current enlarged distribution area.
82 Citations
6 Claims
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1. A method for maintaining group data relating to a communication group in a mobile communications system comprising a plurality of exchanges having connection through base stations with subscribers at least some of which belong to said communication group, said exchanges incorporating respective databases, said method comprising the steps of:
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selecting one of said exchanges as a main exchange in the database of which a master copy of group data of the communication group is maintained; maintaining information in the database of said selected main exchange; on exchanges of a fixed distribution area, said group data being stored in the databases of these exchanges irrespective of the location of the subscribers, on exchanges of an enlarged distribution area, said group data being stored in these exchanges if subscribers belonging to said communication group register under said exchanges, and on exchanges of a current enlarged distribution area, subscribers of said communication group being currently registered under these exchanges; storing said group data in the databases of the exchanges of said fixed distribution area; and storing said group data in the databases of the exchanges of said current enlarged distribution area. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile communications system, comprising:
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a plurality of exchanges having connection through base stations with subscribers at least some of which belong to a communication group, said exchanges incorporating databases; means for maintaining a master copy of group data relating to said communication group in a database; means for maintaining information on exchanges of a fixed distribution area in the database of a selected main exchange, said group data being stored in the databases of the exchanges of said fixed distribution area irrespective of the location of the subscribers; means for maintaining information on exchanges of an enlarged distribution area in the database of said selected main exchange, said group data being stored in the databases of the exchanges of said enlarged distribution area if subscribers belonging to said communication group register under exchanges of said enlarged distribution area; and means for maintaining information on exchanges of a current enlarged distribution area, subscribers of said communication group being registered under these exchanges; means for storing said group data in the databases of the exchanges of said fixed distribution area; and means for storing said group data in the databases of the exchanges of said current enlarged distribution area.
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Specification