Additional Information for Voice Group Call Service
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Accused Products
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.
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Citations
27 Claims
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1-11. -11. (canceled)
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12. 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 (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. 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