30 results about "Voice group call service" patented technology

The invention relates to a method for realizing voice multicast service and relative system, which comprises: A1, the terminal reports the multicast end request to the main control mobile exchange center; B, the main control mobile exchange center releases the base station controller relative to the multicast in its cover region and the communication connection of relative region; C1, the main control mobile exchange center informs the multicast register to set the multicast as idle condition, when the communication connection of relative region and base station controller are both released.

The present invention provides a method for establishing and updating dynamic voice group calling area. The invention is suitable for global system for mobile communications for railway (GSM-R). The dynamic condition of group calling member and the dynamic condition of group calling area are two basic ideas which penetrate the whole dynamic voice group calling service. The invention is based on the basic idea of system of dynamic voice group calling, and provides a system flow which comprises establishing and real-time updating the dynamic group calling area. A novel settling method is provided for network development and optimization of dynamic voice group calling of railway mobile communication system.

The invention discloses a control method and system for group call parallel processing of non-speech services. In this method, the user receives the group call service and the first service on a dedicated channel via the mobile station, releases the group call after the trunk group call ends, and decides whether to release it according to the first service state The dedicated channel. The system includes a home location register (HLR), a group call register (GCR), a mobile switching center (MSC), and a mobile station responsible for user access services, the user receives the first service on the group call channel, and the dedicated channel The mobile station is provided with a first service state identification unit for identifying the first service state and controlling the release of the dedicated channel according to the first service state. According to the user's choice, the solution of the invention can reserve the dedicated channel for carrying non-voice services when releasing the voice service channel in the group call service.

The present invention provides a method and system for establishing a trunking service. The method for establishing a trunking service includes: the group call initiating BSS receives the voice group call request sent by the initiator, and sends a voice group call request carrying its support to the mobile switching center according to the voice group call request. The service request message of the voice codec type; after the MSC is connected to the service of the originator, it receives the first group call establishment request message sent by the originator that carries the voice codec type supported by the originator and the group call reception BSS information; the MSC According to the service request message and the first group call establishment request message, select the first speech codec type used by the group call originating BSS through the group call originating BSS; the MSC selects the group call receiving BSS to use according to the first speech codec type through the group call BSS The second voice codec type: the group call receiving BSS assigns the selected result to its corresponding user. This solution can improve the voice service quality and reduce the network cost when the voice group call service is performed through the IP of the A interface.

The invention discloses a method and a system for indicating an available channel for sending an uplink access request. The method comprises the following steps that: a cluster system network side sends an uplink busy message or a voice group call service (VGCS) additional information message in which an indication message is set in a cell of a cluster group, wherein the indication message carries information indicating a channel for sending the uplink access request; and an answering party in the cell of the cluster group sends an uplink access request on an uplink group call channel or a random access channel indicated by the information according to the information carried by the indication message set in the uplink busy message or the VGCS additional information message.

Disclosed is a processing method and system for voice group call service talker interoffice handover; the method comprises: a target relay mobile switching center (MSC) notifies the master control MSC of the current position information of the talker after receiving the interoffice handover complete message. When compared with prior art, the processing method and system for voice group call service talker interoffice handover provided in the present invention simplifies the processing flow of voice group call service talker interoffice handover and improves the timeliness of the system.

The invention is used for real-time adjusting the voice group call service (VGCS) / voice broadcast service (VBS) channel. In the invention, when group call channel needs to be adjusted, the new group call channel is enabled for VGCS / VBS users, and the channel releasing message carrying new group call description is sent down in the adjusted old group call channel; informing those VGCS / VBS listenerto transfer to the new group call channel; recovering the old group call channel. If the old group call channel is still occupied by VGCS / VBS talker, then firstly transferring the VGCS / VBS talker to the new channel, and secondly transferring the VGCS / VBS listener to the new channel.