Samsung Electronics Co., Ltd.

Siva Prasad Gundur

Vijay Sangameshwara

Nishant Gupta

Sapan Pramodkumar Shah

Basavaraj Jayawant Pattan

Kiran Gurudev Kapale

Suresh Chitturi

Naveen Kolati

Bhargav Madishetty

Vinayak Goyal

Rajavelsamy Rajadurai

Karthik Narayanan

Kiran Gajula

Shiva Prasad Chanduri

Sreekanth Vadakkepurakkal Chandran

Arunjith Govindankutty

Shah Sapan Pramodkumar

Prakash Rao

Naveen Devanahalli Balakrishna

Srinivasa Rao Adusumilli

Narasimha Rao Thurlapati

Sapan Pramod Kumar Shah

Tushar Dutta

Vengataraaman Ramamoorthy

Rathnamaiah Gundai

Paarisha Narula

Inturi Suhas Reddy

A method for sharing a reason cause for a mission critical communication (MCX) communication over pre-established session in an MCC network is provided. The method includes transmitting, to the server, a call initiation request to initiate a call, wherein the call initiation request includes first information on a session type and second information on a resource list, receiving, from the server, a mission critical pre-established session control (MCPC) connect message including a security message, determining whether an authentication for the security message is successful, and transmitting, to the server, a first MCPC acknowledgement message including a reason cause field to inform a reason for terminating the call in response to determining that the authentication for the security message is not successful.

Method and apparatus for sharing reason cause for MCX communication over pre-established session

Embodiments herein provide a user equipment (UE) and a method for performing communication in a mission critical services (MCX) off-network. The method includes: sending an announcement message for a slot reservation for a complete scheduling assignment (SA) cycle; determining whether a second UE in the MCX Off-network is trying to reserve same slot and having a higher priority than priority of the first UE. Further, the method includes performing one of: backing off and sending a new announcement message for the slot reservation in response to determining that the second UE is trying to reserve a same slot and has the higher priority than the priority of the first UE, and reserving the same slot in response to determining that the second UE is trying to reserve the same slot and the second UE has a lower priority than the priority of the first UE.

User equipment and method for performing collision free communication

In an example embodiment of present disclosure, a method and apparatus to exchange an SSRC value between a client and a server for implicit floor requests are disclosed. In an embodiment, the exchange of the SSRC value between the client and the server for implicit floor requests is being done with Explicit Grant Support during a Multi-Talker MCPTT call where the SSRC sharing in FMTP media attribute of Session Description Protocol (SDP). In an embodiment, exchange of the SSRC value between the client and the server for implicit floor requests is being done with Implicit Grant Support during a Multi-Talker MCPTT call where the SSRC sharing in FMTP media attribute of SDP. In an embodiment, exchange of the SSRC value between the client and the server for implicit floor requests is being done with Implicit/Explicit Grant Support during a Multi-Talker MCPTT call where the SSRC sharing in SSRC and FMTP media attribute of SDP.

Method and apparatus for communication in communication system supporting multi-talker mission critical push-to-talk (MCPTT)

A method, a mission critical (MC) server, and a receiver for managing media communication in an MC system are provided. The method comprises receiving, from a sender, a request and a media stream for transmitting the media stream to one or more receivers. The request indicates a mode of transmission of the media stream. Further, the method comprises transmitting a notification message indicating a mode of reception identified based on the mode of transmission, to the one or more receivers for receiving the media stream from the sender. The mode of reception is one from among an emergency mode and a normal mode. Thereafter, the method comprises transmitting the media stream to the one or more receivers subsequent to transmission of the notification message, when the mode of reception is the emergency mode.

Method of managing media communication in mission critical (MC) system, MC server, and receiver thereof

A method for initiating a private communication session by a user equipment (UE) includes: initiating, by the initiating UE, at least one private communication session with a terminating UE using a Session Initiation Protocol (SIP) INVITE message including an I_MESSAGE; and reusing, by the initiating UE, the I_MESSAGE for initiating at least one subsequent private communication session with the terminating UE.

Method and apparatus for initiating a communication session using mission critical services

A method for managing a Mission Critical Video (MCVideo) group call is provided. The method includes transmitting by at least one sender user equipment (UE) in the MCVideo group call, a MCVideo message to an MCVideo Server, receiving, by at least one receiver UE in the MCVideo group call, the MCVideo message from the MCVideo server, wherein at least one of a plurality of functional alias identification (ID) is encoded and included in the MCVideo message, and decoding, by the at least one receiver UE in the MCVideo group call, the at least one of the plurality of functional alias ID from the MCVideo message.

Methods and systems to share functional alias in mission critical video

The present disclosure relates to a communication method and system for converging a 5-Generation (5G) communication system for supporting higher data rates beyond a 4-Generation (4G) system with a technology for Internet of Things (IoT). In an embodiment, a method for sharing a recording status inside a MCVideo group call is disclosed. The method includes receiving, by a plurality of UE participating in the MCVideo group call, a live video stream from a MCVideo server in the MCVideo group call; recording, by at least one UE amongst plurality of UEs, the live video stream, received from MCVideo server in MCVideo group call; appending, by at least one UE recording live video stream, recording status indicative of recording of live video stream, to a transmission control message and communicating transmission control message to MCVideo server.

Method for sharing a recording status inside a mission critical video group call

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A system and a method to handle media transmission in the Mission Critical (MC) systems or MC Video system are provided. According to the system and the method, wastage of network resources can be avoided and other participants in the group can be given chance to transmit important data as maximum number of transmissions at a time in a group call are limited by network capacity. Accordingly, efficiency of the MC Video system can be improved.

System and method to handle media transmission in mission critical (MC) system

A method for controlling media reception at an electronic device communicating with at least one external device includes establishing a communication session between the electronic device and the at least one external device via a server; in response to establishing the communication session, creating an instance of a first reception control state machine for controlling multiple media receptions in the communication session; receiving, from the server, a media transmission notification indicating that a media reception is available from an external device; receiving, from a user of the electronic device, an input for permitting the media reception; and in response to receiving the input, transmitting a media reception request requesting the media reception to the server and creating an instance of a second reception control state machine for controlling the media reception.

Method and device for controlling video reception

Embodiments herein disclose formats for MCData messages and notifications, and methods for coding (encoding and decoding) MCData messages and notifications in a MCData communication system. The method includes generating, by a first UE, an encoded MCData message or notification comprising of signaling payload and data payload content related to one or more MCData user payloads. Further the method includes deriving, by a second UE, the actual MCData messages or notifications by decoding the received encoded MCData messages or notifications. The formats for MCData messages and MCData notifications optimize control headers and allow maximum user data size that can be carried in a single message over signalling, which aids in sending multiple user payloads in a single message.

Method and apparatus for transmitting a mission critical data message in a communication system

The present invention relates to a method for controlling the streaming of multimedia data in a network. The method comprising receiving, from a client device by a server, a request to control reception of at least one media stream from amongst a plurality of media streams as present in multimedia-data undergoing streaming by the client device, analysing the contents of the request to identify at least one of: a reception control message; the at least one media selected; and a type of control to be performed with respect to the at least one media, and responding the client device based on said analysis of the request by suspending or resuming the streaming of the at least one media stream from amongst the plurality of media streams in the multimedia data.

Method and apparatus for controlling streaming of multimedia data in a network

According to an embodiment of the present disclosure, a method of key-management by a group management server in Mission Critical Systems (MCX) between an initiating party and a receiving party is provided. The method comprises generating a master key, the master key being designated for an ad-hoc communication, allocating an identifier to the generated master key, and transmitting a transmission message signed by an initiating MCX entity including the master key to a receiving MCX entity.

Method and apparatus for ad-hoc communication in mission critical systems (MCX)

Optimal network resource consumption by dynamically controlling media bursts in Simultaneous PoC (Push-To-X (Push-To-Voice/Video/etc.) Over Cellular) calls. Embodiments disclosed herein relate to wireless communication networks, and more particularly to PoC calls performed using wireless communication networks. Embodiments herein disclose methods and systems for optimal network resource consumption by dynamically controlling media bursts, when a user is participating in simultaneous PoC sessions. Embodiments herein disclose methods and systems for optimal network resource consumption by enabling a user to selectively enable/disable multiple PoC sessions using MBCP 'Activate' and 'Deactivate' messages.

Optimizing network resources usage by dynamically controlling media bursts in simultaneous push to talk over cellular (POC) calls

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as long term evolution (LTE). A method for handling reception of a plurality of media streams in a mission critical (MC) system is provided. The method includes transmitting, by an MC server, a request to each of one or more receiving devices for receiving a plurality of media streams from a plurality of transmitting devices; receiving, by the MC server, a response from each one of the one or more receiving devices for receiving a number of media streams among the plurality of media streams transmitted by the one or more of the plurality of transmitting devices and updating the number of media streams to be received by each one of the one or more receiving devices as a counter value; identifying, by the MC server, the one or more receiving devices intended to receive the media streams from the one or more of the plurality of transmitting devices based on a synchronization source (SSRC) identifier associated with media streams of each of the one or more of the plurality of transmitting devices and the counter value; and transmitting, based on the SSRC identifier and the counter value, by the MC server, media streams from the one or more of the plurality of transmitting devices to the identified one or more receiving devices.

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Bengaluru, India

Siva Prasad Gundur