Method, apparatus and system using camel dialogue services
First Claim
1. A method of using a CAMEL (Customized Application for Mobile network Enhanced Logic) service in a gateway mobile switch center (GMSC), wherein the method comprises the following during a process in which a called user equipment moves from an original visit mobile switch center (VMSC) to a new VMSC:
- when receiving roaming retry information from the original VMSC, generating a first send routing information containing suppress Terminating CAMEL Subscription Information (TCSI) indicator of the CAMEL dialogue service;
sending a release message to said original VMSC to release a call connection with the original VMSC;
after receiving a release complete message fed back from the original VMSC based on the release information, sending the first send routing information to a home location register, so as to request for a mobile station roaming number of the called user equipment in the new VMSC;
receiving a mobile station roaming number of said called user equipment in said new VMSC from said home location register; and
sending an initial address message to said new VMSC based on the mobile station roaming number of said called user equipment in said new VMSC, such that the new VMSC establishes a call connection with the called user equipment.
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Abstract
An objective of the present invention is a method, apparatus, and a system using a CAMEL service. According to the method of the present invention, the method comprises the following steps during a process in which a called user equipment moves from an original visit mobile switch center (VMMSC) to a new VMSC: when receiving roaming retry information from the original VMSC, generating a first send routing information containing suppress Terminating CAMEL Subscription Information (TCSI) indicator of the CAMEL dialog service; sending the first send routing information to a home location register, so as to request a mobile station roaming number of the called user equipment in said new MSC. According to the method of the present invention, the initial CAMEL service connection is always maintained during the MTRR process, without bothering to interrupt and re-invoke various kinds of CAMEL services, thereby shortening the call setting time during the MTRR process; besides, the communication load of the network ss7 is reduced, and the network resources are saved. Particularly during the RBT service process, the user will not hear two different ringtones any more, which enhances the user experience.
7 Citations
9 Claims
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1. A method of using a CAMEL (Customized Application for Mobile network Enhanced Logic) service in a gateway mobile switch center (GMSC), wherein the method comprises the following during a process in which a called user equipment moves from an original visit mobile switch center (VMSC) to a new VMSC:
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when receiving roaming retry information from the original VMSC, generating a first send routing information containing suppress Terminating CAMEL Subscription Information (TCSI) indicator of the CAMEL dialogue service; sending a release message to said original VMSC to release a call connection with the original VMSC; after receiving a release complete message fed back from the original VMSC based on the release information, sending the first send routing information to a home location register, so as to request for a mobile station roaming number of the called user equipment in the new VMSC; receiving a mobile station roaming number of said called user equipment in said new VMSC from said home location register; and sending an initial address message to said new VMSC based on the mobile station roaming number of said called user equipment in said new VMSC, such that the new VMSC establishes a call connection with the called user equipment. - View Dependent Claims (2, 3, 4)
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5. A gateway mobile switch center (GMSC) for using a CAMEL (Customized Application for Mobile network Enhanced Logic) service, wherein the GMSC comprises the following devices to perform operations during a process in which a called user equipment moves from an original visit mobile switch center (VMSC) to a new VMSC:
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a generating device configured to, when receiving roaming retry information from the original VMSC, generate first send routing information containing suppress Terminating CAMEL Subscription Information (TCSI) indicator of the CAMEL dialogue service; a sub-sending device configured to send a release message to said original VMSC to release a call connection with the original VMSC; a first sending device configured to, after receiving a release complete message fed back from the original VMSC based on the release information, send the first send routing information to a home location register, to request a mobile station roaming number of the called user equipment in the new MSC; a receiving device configured to receive a mobile station roaming number of said called user equipment in said new VMSC from the home location register; and a second sending device configured to send an initial address message to said new VMSC based on the mobile station roaming number of said called user equipment in said new VMSC, such that said new VMSC establishes a call connection with the called user equipment. - View Dependent Claims (6, 7, 8, 9)
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Specification