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US 7,460,875 B2Granted
Additional information for voice group call service
AssigneeT-Mobile Deutschland GmbH
InventorsVolker Brass, Walter Grethe, Thomas Sieredzki
Life of this patent
Estimating the term…
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.
Claims16
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.
1 more element
A system for providing members of a Voice Group Call Service (VGCS) with additional information, the system comprising:
- 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;
- wherein
- the additional information is sent on a slow associated control channel (SACCH) of all traffic channels (TCHs) where the VGC is ongoing.
6 more elements
Dependencies are inferred from the claim text.