Cellular radiotelephone system signalling protocol
First Claim
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1. A method of transmitting data packets in a data network connecting a plurality of mobile switching centers in a cellular radio telecommunications network providing service to a plurality of subscribers, each of said mobile switching centers containing a software package, said method comprising the steps of:
- inserting into each packet a label containing an identification of a source mobile switching center and a destination mobile switching center for the packet;
inserting into said packet an information block including a message containing subscriber service data;
inserting into said packet data identifying the software package in said source mobile switching center; and
sending said packet from said source mobile switching center to said destination mobile switching center.
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Abstract
A communications protocol for a cellular network comprised of a plurality of exchanges each of which includes a software package for providing services to a plurality of subscribers. According to this protocol, efficient communication between two exchanges can be implemented through a handshake procedure in which each exchange identifies the capabilities and features of its software package to the other exchange.
91 Citations
30 Claims
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1. A method of transmitting data packets in a data network connecting a plurality of mobile switching centers in a cellular radio telecommunications network providing service to a plurality of subscribers, each of said mobile switching centers containing a software package, said method comprising the steps of:
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inserting into each packet a label containing an identification of a source mobile switching center and a destination mobile switching center for the packet; inserting into said packet an information block including a message containing subscriber service data; inserting into said packet data identifying the software package in said source mobile switching center; and sending said packet from said source mobile switching center to said destination mobile switching center. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A signalling system for communicating messages via a communications medium between an originating mobile switching center and at least one destination mobile switching center within a cellular radio telecommunications network providing service to a plurality of subscribers, each of said mobile switching centers including a software package, each of said messages relating to the cellular service being provided to one of said subscribers and comprising:
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a label field containing an identification of said originating mobile switching center and said at least one destination mobile switching center; a pair of heading codes fields; and an information field including; a package information block which identifies the software package within said originating mobile switching center. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. In a cellular radiotelephone system network carrying high speed digital messages between a plurality of mobile switching centers serving mobile subscribers located in different geographic areas within said network, the combination of:
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a first mobile switching center including a software package having a particular identity which provides to said center certain specific features and communications capabilities; a second mobile switching center connected to said first center for the communication of data therebetween, said second center also including a software package having a particular identity which provides to said second center certain specific features and communications capabilities; and a signalling system for carrying digital data messages between said first and second mobile switching centers related to the providing of mobile communications services to said subscribers, said signalling system incorporating a communications protocol including; a data packet label comprising an identification of a source switching center and a destination switching center; an information block including a message being sent from said source center to said destination center; and means for identifying the particular software package within said source center from which said message originates. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A system for transmitting data packets in a data network connecting a plurality of mobile switching centers in a cellular radio telecommunications network providing service to a plurality of subscribers, each of said mobile switching centers including a software package, said system comprising:
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means for inserting into each packet a label containing an identification of a source mobile switching center and a destination mobile switching center for the packet; means for inserting into said packet an information block including a message containing subscriber service data; means for inserting into said packet data identifying the software package in said source mobile switching center; and means for sending said packet from said source mobile switching center to said destination mobile switching center. - View Dependent Claims (21, 22, 23, 24, 25)
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26. In a cellular network comprised of first and second exchanges, each of said first and second exchanges including a software package for providing services to a plurality of subscribers, a method for controlling the exchange of subscriber service information between said first and second exchanges comprising the steps of:
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sending from said first exchange to said second exchange a handshake origination message including an identification of the software package in said first exchange; sending from said second exchange to said first exchange, in response to the receipt of said handshake origination message, a handshake confirmation message including an identification of the software package in said second exchange; and exchanging subscriber service information between said first and second exchanges based on the capabilities of said software packages in said first and second exchanges, respectively. - View Dependent Claims (27, 28, 29, 30)
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Specification