Kodiak Networks Inc

Gorachand Kundu

Krishnakant M Patel

Ravi Ayyasamy

Brahmananda R Vempati

Ramu Kandula

Harisha Mahabaleshwara Negalaguli

Ravi Shankar Kumar

Basem Ahmad Ardah

Pratap Chandana

Giridhar K Boray

Anand Narayanan

Shiva K K Cheedella

Bibhudatta Biswal

Bruce D Lawler

Ravi Ganesh Ramamoorthy

Arun Velayudhan

Shibu Narendranathan

Raajeev Kuppa

Chetan M Patel

Basem A Ardeh

Rajendra Kumar Anthony

Deepankar Biswas

Bharatram Setti

Kandula Ramu

Shiva K Cheedella

Basem A Ardah

A system and method to leverage Web Real-Time Communication (WebRTC) for implementing Push-to-Talk (PTT) solutions. One or more servers interface to a communications network to perform advanced voice services for one or more wireless or wired user devices, wherein the advanced voice services include a two-way half-duplex voice call within a group of the user devices comprising a PTT call session. At least one of the user devices communicates with at least one of the servers during the PTT call session using a WebRTC connection, and at least the media streams for the PTT call session are transmitted between the server and the user device using the WebRTC connection.

System and method to leverage web real-time communication for implementing push-to-talk solutions

A system and method for providing effective presence for Push-to-talk-over-Cellular (PoC) networks, wherein one or more servers performs an effective presence delivery method that reduces presence notifications delivered to mobile units participating in advanced voice services, while ensuring that the presence notifications relevant to the mobile units are available when the advanced voice services are invoked by the mobile units. The presence notifications are used to indicate a change in network presence of the mobile units. In addition, the presence notifications are used to indicate a change in self-availability status of the mobile units.

Effective presence for push-to-talk-over-cellular (PoC) networks

A Push-to-Talk-over Cellular (PoC) implementation for use in a wireless communications network, wherein one or more servers interface to the wireless communications network to perform the PoC call sessions. Both the servers and the mobile units that use the PoC call sessions communicate with each other using SIP/IP (Session Initiation Protocol/Internet Protocol) control messages within the wireless communications network, and one or more of the servers switches RTP/IP (Realtime Transport Protocol/Internet Protocol), RTCP/IP (Realtime Transport Control Protocol/Internet Protocol), or MBCP/IP (Media Burst Control Protocol/Internet Protocol) voice packets for the PoC call sessions between the mobile units across the wireless communications network.

Push-to-talk-over-cellular (PoC)

A system and method for providing radio access network (RAN) aware service delivery for Push-to-talk-over-Cellular (PoC) networks, wherein at least one of the servers performs an presence delivery method that reduces presence notifications delivered to the mobile units participating in communications services. The effective presence delivery method may comprise: throttling the delivery of the presence notifications; avoiding simultaneous dispatch of the presence notifications to multiple watchers located in the same cell or group of cells of the wireless communications network; or the server delaying sending the presence notifications for a mobile unit until the mobile unit triggers the server.

Radio access network (RAN) aware service delivery for Push-to-talk-over-Cellular (PoC) networks

A system and method for providing advanced voice services in a wireless communications network. The system includes at least one server that exchanges messages with mobile units, in order to indicate that a user is neither online or offline, but is temporarily unreachable or unavailable. The user may be temporarily unreachable or unavailable due to connectivity issues with the user's mobile unit in the wireless communications network. Presence information for the user is distributed from the server to watchers, wherein the presence information indicates that the user is offline when the user is temporarily unreachable or unavailable. Various techniques may be implemented to determine how long the user's mobile unit must remain connected to the wireless communications network, before the presence information indicates that the user is online.

Method and framework to detect service users in an insufficient wireless radio coverage network and to improve a service delivery experience by guaranteed presence

WiFi interworking solutions for Push-To-Talk over Cellular (PoC) in the Open Mobile Alliance (OMA) Standard.

WiFi interworking solutions for push-to-talk-over-cellular (PoC)

A Hybrid Push-to-Talk (PTT) function for use in wireless communications networks, such as cellular mobile telephone networks. The cellular mobile telephone network includes a Real-Time Exchange (RTX) that interfaces to at least one Mobile Switching Center (MSC) in the cellular mobile telephone network to provide instant two-way half-duplex voice messaging within a group of users. In the Hybrid PTT function, first or initial talkbursts or volleys are transmitted by the RTX from an originating mobile to terminating mobiles on pre-established Internet Protocol (IP) sessions between the RTX and the mobiles. In addition, circuit channels are established by the RTX with the mobiles through the MSC in parallel with the first talkburst or volley. Thereafter, second or subsequent talkbursts or volleys are transmitted by the RTX from the originating mobile to the terminating mobiles on the circuit channels.

Hybrid push-to-talk for mobile phone networks

Enhanced Group Calling Features for Connected Portfolio Services in wireless communications networks, such as a mobile or cellular phone communications networks. The Connected Portfolio Services include Mobile Conferencing (Scheduled/Instant/Reservationless Conference), Family Connect, Buddy Connect, and Quick Reach, while the Enhanced Group Calling Features include Voicemail Diversion (the recognition of a diversion to voicemail and dropping the leg), Reverse Quick Reach (where a terminating subscriber defines how a call dialed to his/her mobile number should be handled and directed), and Single Number Group Calling (an optimal design implementation of single number based group calling).

Enhanced group calling features for connected portfolio services in a wireless communications network

A predictive wakeup function for Push-to-Talk-over Cellular (PoC) call setup optimizations in a cellular mobile phone network. In performing the predictive wakeup for call setup optimizations, an originating mobile transmits an event trigger to a real-time exchange that interfaces to a mobile switching center in the cellular mobile phone network. The real-time exchange transmits a wakeup message to one or more terminating mobiles of predicted participants, in order to transition the terminating mobiles of the predicted participants from a dormant state to an active state prior to a call being setup with the terminating mobiles of the predicted participants. The terminating mobiles of the predicted participants are identified by a predictive wakeup mechanism before the originating mobile sends a list of one or more terminating mobiles of actual participants to the real-time exchange. The predicted participants may be determined based on static or dynamic information, including heuristics involving calling patterns.

Predictive wakeup for push-to-talk-over-cellular (POC) call setup optimizations

A real-time exchange (RTX) interfaces to a wireless communications system to provide enhanced features for advanced voice services (AVS), which include Voice Activated Floor Management, Voice Short Message Services (SMS) and Address Book Backup.

Advanced features on a real-time exchange system

Group voice services are provided in a wireless network, such as a cellular telephone network (), by a dispatch gateway () that interfaces to the wireless network to provide the group voice services therein, wherein both the dispatch gateway and mobiles () that use the group voice services communicate with each other using cell setup and in-band signaling within the wireless network.

Dispatch service architecture framework

A system for providing advanced voice services (AVS) in wireless communications systems includes a Real-Time Exchange (RTX) that interfaces to a wireless communications network to provide the AVS therein, wherein the AVS comprise Closed User Groups and Limiting Mobility. The Closed User Groups allow a group of users to make and receive calls only to other members of a group, and calls outside of the group are disallowed. The Limiting Mobility uses location information to restrict a mobile unit to service within one or more specified systems, cells or location areas.

Architecture and implementation of closed user groups and limiting mobility in wireless networks

A roaming gateway for support of advanced voice services while roaming in wireless communications systems. The roaming gateway supports push-to-talk (P2T) calls, or other advanced voice services, when P2T subscribers roam from their home network (i.e., a network operated by their service provider where the subscriber's profile resides) into a foreign network (i.e., a network operated by another service provider). The roaming gateway is a specialized version of a real-time exchange that is located in the home network and is connected to mobile switching centers in foreign networks, so that the mobile switching centers in the foreign networks need not be programmed for the advanced voice services.

Growing community of inventors

Bengaluru, India

Gorachand Kundu