966 results about "Push-to-talk" patented technology

A push-to-talk (“PTT”) group call system, for use as, e.g., a public safety wireless network, includes a CDMA-based 1x-EVDO radio access network operably connected to a PTT server over an IP network. The radio access network includes base stations for radio communications with a number of distributed mobile stations. In carrying out wireless communications, the group call system combines IP-based voice and other real-time multimedia services with the 1x-EVDO radio access network's Broadcast Multicast Service. This allows a number of users to receive the same copy of an IP-based media stream for point-to-multipoint, group transmissions. To reduce call setup times, the group call system uses “standing” call groups, which are ongoing group communication channels pre-established between the PTT server and authorized group users. Thus, mobile stations link to one or more standing call groups of interest upon power-up, prior to users speaking.

A method and system to provide push-to-talk from one user to another in a wireless packet data telecommunications network is described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices are segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.

The present invention involves a method that allows a user of a Push-to-talk over Cellular PoC system to select more flexibly the mode of transmitting. By means of the present invention, the user of a PoC terminal (UE1) is able to send text during an ongoing PoC session to a PoC server (PS) which transcodes the text into speech before transmitting it to the other participants (UE2) of the PoC session. Additionally, the method allows a speech-to-text transcoding act, for example, in order to add subtitles to a video clip that is shown during a video-PoC session. Further, the method allows speech-to-speech transcoding in order to replace the sender's own speech with another speech or voice during a PoC session. In addition to the text-to-speech, speech-to-text and/or speech-to-speech transcoding, the PoC server (PS) may be arranged to translate the received data into another language and to send the translated data to the recipients or back to the sender.

An apparatus, architecture and method for floor control in a Push-to-Talk system. A mobile station (203) may transmit a floor request message or messages and request multiple floors. Each floor may correspond to a media type having multiple media streams. A PoC server (201) assigns a priority to media types and/or media streams such that for example, a mobile station (203) may have a floor to transmit a video clip having audio and video streams to a talk group (207), and a member of the talk group may have a floor to transmit audio voice commentary on the media to the talk group (207). The embodiments of the present invention enable multimedia communication use cases without the need for duplication of the state machine at each node, thereby conserving resources.

An embodiment method includes receiving, by a first push-to-talk (PTT) service hosted on a processor, a session initiation request from a PTT client of a user and identifying, by the first PTT service, a user affinity group of the user. The user is assigned to the user affinity group in accordance with a prediction the user will communicate with first users in the user affinity group more frequently than second users in different user affinity groups. The method further includes determining, by the first PTT service, a PTT call server for the user affinity group. The PTT call server serves the user and the first users belonging to the user affinity group.

A system receives an audio nickname tag related to a push-to-talk (PTT) user, and associates the audio nickname tag with the PTT user.

Advanced voice services known as “Virtual Push-to-Talk” and “Push-to-Share” for wireless communications systems. A Real-Time Exchange (RTX) interfaces to the wireless network to provide these advanced voice services.

Disclosed herein is a method and apparatus for controlling a speech recognition system on board an automobile. The automobile has one or more voice activated accessories and a passenger cabin with a number of seating locations. The speech recognition system has a plurality of microphones and push-to-talk controls corresponding to the seating locations for inputting speech commands and location identifying signals, respectively. The speech recognition system also includes multiple speech engines recognizing speech commands for operating the voice activated accessories. A selector is coupled to the speech engines and push-to-talk controls for selecting the speech engine best suited for the current speaking location. A speech processor coupled to the speech engine selector is used to recognize the speech commands and transmit the commands to the voice activated accessory.

A comprehensive signalling node is provided according to an embodiment of the invention. The comprehensive signalling node includes a signalling interface adapted for transmitting and receiving signalling communications and a storage system configured to store a Media Gateway Controller (MGC) routine, to store a Session Initiation Protocol (SIP) routine, to store a Session Border Controller (SBC) routine, to store a Push-To-Talk (PTT) routine, to store a H.323 routine, to store a Wide Area Network (WAN) compression routine, and to store a Communication Assistance for Law Enforcement (CALE) routine. The comprehensive signalling node further includes a processing system that is configured to receive a signalling communication through the signalling interface, process the signalling communication with the MGC routine if appropriate, with the SIP routine if appropriate, with the SBC routine if appropriate, with the PTT routine if appropriate, with the H.323 routine if appropriate, with the WAN compression routine if appropriate, or with the CALE routine if appropriate.

In a telecommunications system (100), a method and apparatus for priority queuing of callers requesting an opportunity to speak during a push-to-talk call is disclosed. The method includes defining a group for a call in response to a user input (210, 410), assigning a priority level designation to the at least one participant (220, 420), and granting access to transmit speech in a push-to-talk call based on the priority level (270, 280, 290, 300). The apparatus includes a first server (150) and a second server (140) communicatively coupled to the first server. The second server is programmed to implement the steps given above.

The present invention relates to a method of reducing setup delay for an uplink message from a user terminal (UT) in a delay sensitive service in a radio telecommunications system, such as a push to talk service (PoC), by predicting that delay sensitive data is about to be transmitted, sending, as a response to the prediction, a connection setup signal from the terminal to a basestation subsystem (BSS) in order to set up an early uplink radio connection, and transmitting the delay sensitive data via the early uplink connection. There is also provided a user terminal (UT) and a radio telecommunications system.

A system is provided for enabling voice-enabled selection and execution for playback of media files stored on a media content playback device. The system includes a voice input circuitry and speech recognition module for enabling voice input recognizable on the device as one or more voice commands for task performance; a push-to-talk interface for activating the voice input circuitry and speech recognition module; and a media content synchronization device for maintaining synchronization between stored media content selections and at least one list of grammar sets used for speech recognition by the speech recognition module, the names identifying one or more media content selections currently stored and available for playback on the media content playback device.

A communication network supports push-to-talk communications with reduced dispatching delays by eliminating channel grant/request handshaking on the uplink and the downlink. A pool of communication channels can be associated with a group of nets that include one or more mobile terminals. Any terminal can send dispatch traffic immediately on an assigned uplink channel simply by seizing the channel. The network detects such traffic and retransmits it on a downlink channel monitored by the group of nets. Along with the retransmitted traffic, the network sends a net ID and a new downlink channel assignment. Terminals in the targeted net process the retransmitted traffic and non-targeted terminals switch to the new channel. Alternatively, the control channel can be multiplexed to signal traffic channel assignments as needed for all nets, and traffic can be transmitted on the indicated channels for reception by targeted terminals. The reduced delays particularly benefit networks incorporating satellite relays.

A method and system to provide push-to-talk from one user to another in a wireless packet data telecommunications network is described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices are segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.

A method and apparatus is disclosed for remotely processing voice commands for controlling a television. A voice command is uttered by a user into a microphone contained in a remote control. The voice command is digitized, modulated, compressed, and wirelessly transmitted to a wireless receiver connected to a set-top box. The voice command is then transmitted to a cable head-end unit for voice and word recognition processing. Once the command function is determined, the function is transmitted back to the set-top box where the set-top box performs the command. The microphone is activated and deactivated by pressing and releasing a push-to-talk (PTT) switch. The PTT activates other functions by being turned, double-clicked and toggled up and down, left and right.

A method and apparatus for creating a communication group using an electronic address book to facilitate Push-to-Talk over Cellular (PoC) group communication sessions are disclosed. A group definition for determining members of the new PoC Group is composed from one or more contacts from the electronic address book such as by selecting from the address book using the mobile station. The group definition may include logical operators to define the combination of contacts. A name may be specified for the new group. The assembly of the PoC Group list of members may be performed by the mobile station, a communication network server for maintaining PoC Groups (e.g. a Group and List Management Server (GLMS)) or an email server.

To reduce a delay between a time that a user of an originating mobile station (MS) requests to set up a Push-To-Talk (PTT) call and the time that the user may begin to speak, a communication system provides a ‘wake up list’ of other mobile stations (MSs) that may be awakened prior to the originating MS requesting to set up a PTT call. To further reduce the delay, the user may begin speaking prior to completion of the call setup. The speech is stored and is conveyed to a called MS when the call is setup. If the call does not get setup or a user of the called MS is not present, the stored speech may be conveyed to the called MS as a voice message. The stored speech, or new speech, may also be used as an announcement of a call instead of the typical “beep” or “chirp.”

An authentication system is configured to weight multiple available network supplied and user supplied authentication factors to determine whether a user should be provided with access to an Emergency Communication Network (ECN). The multiple factors may include the location of the user, MIN, short PIN, token, biometric information, and other information. The level of access to be provided to the user may be tiered based on the authentication level achieved during the weighting process. Authentication information may be shared between groups of individuals, so that the authentication requirements for group members may be reduced as other members of the group supply authentication information to the ECN. Group authentication may be used to enable group services such as conferencing and push-to-talk to be set up automatically for the group.

A Mobile Alert Network service includes identifying an Alert Area related to an Event Location, identifying a group of subscribers in the Alert Area, and broadcasting an Alert Message to the identified subscribers in a push-to-talk-equivalent environment. The Alert Messages can alert the subscribers about the cause of the alert, offer message related choices, and offer event related choices, such as promotion information or offers. The MAN Service may include an Alert Information Service, a Subscriber Selector, and a Broadcast Module to generate an Alert Message. The event related choices may be generated based on campaigns by Promotional Agents. A wrapper can be downloaded to manage Alert Messages, a mailbox, and to update on board applications. A on-board logger can provide a detailed account of the operations of the handset and its user. A Sensor Array can be used to determine the location of users, based on the self-identification information, broadcast by the cell phones.