Additional information for voice group call service
First Claim
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1. A method for providing active members of a Voice Group Call Service (VGCS) with additional information, the method comprising:
- transmitting the additional information in a message on an associated control channel for a traffic channel of the voice group, wherein the message contains a voice group call ID (VGC-ID) or a voice group call Reference (VGC reference);
triggering, via a mobile switching center (MSC), a message, addition-information-request-message, on an A-interface a base station subsystem (BSS), to send the additional information to the group members; and
sending, via the BSS the additional information on a slow associated control channel (SACCH) of all traffic channels (TCHs) where the VGC is ongoing.
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Abstract
A method and system for providing the active members of a Voice Group Call Service with additional information. The additional information is transmitted in a message on the associated control channel for the downlink traffic channel of the voice group. The additional information is transmitted simultaneously to an ongoing voice group call.
18 Citations
16 Claims
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1. A method for providing active members of a Voice Group Call Service (VGCS) with additional information, the method comprising:
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transmitting the additional information in a message on an associated control channel for a traffic channel of the voice group, wherein the message contains a voice group call ID (VGC-ID) or a voice group call Reference (VGC reference); triggering, via a mobile switching center (MSC), a message, addition-information-request-message, on an A-interface a base station subsystem (BSS), to send the additional information to the group members; and sending, via the BSS the additional information on a slow associated control channel (SACCH) of all traffic channels (TCHs) where the VGC is ongoing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for providing members of a Voice Group Call Service (VGCS) with additional information, the system comprising:
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first signal processing units for dedicated text-and/or binary signal transmission; second signal processing units for speech transmission purposes in combination with said first signal processing units; the additional information contains a voice group call ID (VGC-ID) or a voice group call Reference (VGC Reference); an A-interface; a base station subsystem (BSS); and a mobile switching center (MSC) connected via said A-interface to said BSS for sending the additional information to the group members via a message, additional-information-request-message;
whereinthe additional information is sent on a slow associated control channel (SACCH) of all traffic channels (TCHs) where the VGC is ongoing.
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Specification