67 results about "Session Description Protocol" patented technology

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may obtain a data channel establishment request comprising session description protocol (SDP) information corresponding to a multimedia call session between a first user equipment (UE) and a second UE, the SDP information including a data channel application identifier corresponding to a data channel application. The first network node may provide, to a second network node, a data channel service request that indicates the data channel application identifier. The first network node may obtain, from the second network node, a service response comprising a data channel control policy associated with the data channel application identifier and may allocate, based at least in part on the data channel control policy, media resources corresponding to at least one application data channel. Numerous other aspects are described.

The invention discloses a channel negotiation method and device based on relay proxy and a storage medium, and relates to the technical field of telecommunication, and the method comprises the steps: requesting a relay server to obtain a relay proxy address, packaging the relay proxy address into a candidate address of a session description protocol, and sending the candidate address to a called terminal through the relay server, analyzing a private network address in response information fed back by the called terminal, initiating a binding request to the private network address of the called terminal, and if the binding request does not establish connection with the called terminal, sending a penetration request to a specified port of the relay server, and establishing a bidirectional network address channel with the called terminal through the penetration request forwarded by the relay server and a binding request initiated by the called terminal to the relay proxy address. According to the invention, the channel between the calling end and the called end is established through the relay proxy address of the relay server and the penetration request, so that the flexibility of media stream transmission is improved.

To determine the state of use of a telephone number in an Internet protocol multimedia subsystem (IMS) network by using an IMS interconnection interface for an inter-business interconnection.SOLUTION: A telephone number inspection device 10 is connected to a plurality of Internet protocol (IP) telephone terminals 50 connected with a terminating fixed IP multimedia subsystem (IMS) network 30 via an originating fixed IMS network 20, sends an INVITE request to the terminating fixed IMS network 30 by adding session description protocol (SDP) parameters to the INVITE request for the IP telephone terminal 50 to be investigated, receives a response message from the terminating fixed IMS network 30, and determines the state of use of the telephone number of the IP telephone terminal 50 to be investigated according to the response message.SELECTED DRAWING: Figure 1

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.

The invention provides a communication method and device and a communication system, and relates to the technical field of communication. In the method, a session description protocol (SDP) proposal party and an SDP responder can negotiate whether a protocol stack of a data channel of an IMS session in which the two parties participate comprises a datagram transport layer security (DTLS) protocol or not, so as to adapt to communication scenes with different security requirements and improve the flexibility of communication. Wherein the SDP proposal party is one terminal in the IMS session, and the SDP responder is another terminal in the IMS session, or the SDP proposal party is one terminal in the IMS session, and the SDP responder is network equipment in a communication network in which the IMS session is located, or the SDP proposal party is network equipment in the communication network in which the IMS session is located, and the SDP responder is one terminal in the IMS session.

Provided in the present disclosure are a voice call establishment method and apparatus, and a device and a storage medium. The method comprises: on the basis of first information, a first communication device determining whether to enable a routing optimization function; and when it is determined that the routing optimization function is to be enabled, negotiating with a second communication device to establish call routing between a calling terminal and a called terminal, wherein the first information comprises one or more of the following: first access network information of the calling terminal, second access network information of the called terminal, and a result of session description protocol (SDP) negotiation between the calling terminal and the called terminal.

An example method includes sending or receiving a session description protocol (SDP) message that includes binding information that associates a first RTP header extension and a second RTP header extension for an RTP session, wherein the binding information is indicative of a first timestamp in the first RTP header extension, and the first timestamp in the second RTP header extension, both being indicative of a time at which a first RTP packet including the first RTP header extension is transmitted. The method includes transmitting, by a first device, the first RTP packet and receiving, by the first device, a second RTP packet, the second RTP packet including the second RTP header extension including the first timestamp, a second timestamp, and a third timestamp. The method includes determining, based on at least one of the first timestamp, the second timestamp, or the third timestamp, a delay.

The embodiment of the invention discloses a data processing method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a network address translation type, a power consumption level and network topology information of network equipment when a registration request of the network equipment is received, and carrying out the registration of the network equipment according to the network address translation type, the power consumption level and the network topology information, generating equipment associated information; when a connection request of a client is received, analyzing a target device identifier in the connection request, and determining a target network device corresponding to the target device identifier and pre-stored device association information; and determining an adaptive point-to-point transmission strategy according to the equipment association information, and establishing point-to-point direct connection between the target network equipment and the client based on the determined point-to-point transmission strategy and an interactive enhanced session description protocol between the target network equipment and the client, and the scheme can provide a hole digging success rate.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. In accordance with an embodiment of the disclosure, a method for transmitting artificial intelligence (AI) model data via an IP multimedia subsystem (IMS) is provided. The method comprises transmitting to a user equipment (UE) a session description protocol (SDP) offer message comprising a first attribute indicating at least one AI model; receiving from the UE a SDP answer message comprising the first attribute; and transmitting to the UE AI model data based on the first attribute, wherein the first attribute comprises at least a set of parameters corresponding to the at least one AI model, and wherein the set of parameters comprises a first parameter indicating whether the at least one AI model is a partial AI model or not.

To provide systems and methods for rendering an immersive three-dimensional group session.SOLUTION: A scene graph is signaled through a session description protocol (SDP) during a session initiation protocol (SIP) session setup. The scene graph includes respective graphical output nodes assigned to be controlled by a plurality of participant computing devices in an immersive three-dimensional group session.SELECTED DRAWING: Figure 4

Embodiments herein relate, for example, to a method performed by a network node (150,13,15) for handling registering to an Internet Protocol Multimedia Subsystem, IMS, network in a communication network. The network node, with the proviso that a user equipment, UE, (10) is performing a handover from a first public land mobile network, PLMN, of a first country or operator to a second PLMN of a second country or operator, performs one or more of the following: —enforcing the UE (10) to make a session initiation protocol, SIP, registration whereby an IMS system can switch off SIP encryption policy, immediately after having entered the second PLMN; —initiating a SIP re-INVITE with a session description protocol, SDP, including a UE subscriber identity, ID, a remote party ID, and an indication of a speech codec; and 7 or —when the network node knows by configuration that the second PLMN requires a different SIP encryption policy than currently used, sending a message to another network node, wherein the message indicates explicitly or implicitly that a different SIP encryption policy and / or LI policy is to be used.

An example method includes transmitting or receiving a session description protocol (SDP) message, the session description protocol (SDP) message including binding information associating a first RTP header extension and a second RTP header extension of an RTP session, where the binding information indicates a first timestamp in the first RTP header extension and the first timestamp in the second RTP header extension, both indicate a time to transmit a first RTP packet including the first RTP header extension. The method comprises: transmitting, by a first device, the first RTP packet; and receiving, by the first device, a second RTP packet, the second RTP packet comprising the second RTP header extension, the second RTP header extension comprising the first timestamp, a second timestamp, and a third timestamp. The method includes determining a delay based on at least one of the first timestamp, the second timestamp, or the third timestamp.

A second device (e.g., a session border controller (SBC) receives, from a first device (e.g., a video teleconference server) of an IP communication network, an invitation (e.g., a session initiation protocol (SIP) message) to create a session between the first device and a third device (e.g., a computer of a person participating in the teleconference) of the network. The invitation includes a session description, e.g., in session description protocol (SDP) format. The second device determines whether to forward the invitation toward the third device based on a datastore comprising i) prior invitations received by the second device to create sessions between devices of the network, and ii) results of the prior invitations. Upon determining to forward the invitation, the second device forwards the invitation.

A method and apparatus for signaling multiple audio mixing gains using a single Real-Time Transport Protocol (RTP) header extension in a teleconference is provided. The method includes: receiving an input audio stream from a 360-degree video / audio stream, the input audio stream including multiple mixing gains from the input audio stream and an overlay audio stream; declaring a single RTP header extension for all mixing gains (including one or more of an element identifier, a length of the extension element, and a magnitude of the mixing gain); and signaling the mixing gains using the single RTP header extension. The single RTP header extension can use a one-byte header extension format or a two-byte header extension format, and the one-byte header extension format or the two-byte header extension format is declared using the Session Description Protocol (SDP).

In an embodiment of the present disclosure, the present disclosure relates to a method and apparatus for efficiently communicating between a client and a server supporting mission-critical push-to-talk (MCPTT) in a communication system. The method is performed by a client device supporting the MCPTT in the communication system, and the method includes: sending a session description protocol (SDP) proposal to a server, the SDP proposal including a synchronization source (SSRC) value as a media attribute of the session description protocol (SDP); and receiving an SDP response from the server in response to the SDP proposal, wherein the SDP response includes the same SSRC value in response to the SSRC value in the SDP proposal not being in use or a new SSRC value in response to the SSRC value in the SDP proposal being in use.

Aspects of the subject disclosure may include, for example, a method that includes receiving, by a processing system in communication with a client device, a signal from the client device according to a session description protocol (SDP); the signal comprises a capability parameter regarding streaming of video frames to the client device, a first focus area parameter and a second focus area parameter indicating respectively a first resolution for a high focus area and a second resolution for a low focus area of the video frame, a bandwidth parameter indicating a bandwidth availability for a streaming video session, and a streaming method parameter regarding the streaming of the video frames. The system calculates the high focus area and the low focus area of the video frame, and delivers, subsequent to receiving the signal, a plurality of video frames to the client device. Other embodiments are disclosed.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by an IMS (Internet Multimedia Subsystem) AS (Application Server) in a wireless communication system, the method comprising: receiving a first message including a first SDP (Session Description Protocol) offer for a first media from a first user equipment (UE) from a first UE; transmitting a second message for notifying a media change request event to a data channel signaling function (DCSF) entity; receiving a third message including avatar media processing information from the DCSF entity; and transmitting a fourth message including a second SDP offer for a second media from a network entity to a second UE.

Aspects of the subject disclosure may include, for example, a method that includes receiving, by a processing system in communication with a client device, a signal from the client device according to a session description protocol (SDP); the signal comprises a capability parameter regarding streaming of video frames to the client device, a first focus area parameter and a second focus area parameter indicating respectively a first resolution for a high focus area and a second resolution for a low focus area of the video frame, a bandwidth parameter indicating a bandwidth availability for a streaming video session, and a streaming method parameter regarding the streaming of the video frames. The system calculates the high focus area and the low focus area of the video frame, and delivers, subsequent to receiving the signal, a plurality of video frames to the client device. Other embodiments are disclosed.

The invention relates to the technical field of digital information transmission, in particular to a media stream transmission method and device and a storage medium, and the method comprises the steps: obtaining first session description protocol SDP information sent by a request sending end, and judging whether a client media stream needs to pass through a server; if yes, the server serves as a back-to-back user agent; if not, the server inserts a first candidate address and a second candidate address of the server type into the first SDP information and the second SDP information; the request sending end and the request response end carry out ICE connectivity check based on all candidate addresses of the two parties; adding the candidate address pairs which are not forwarded by the server into a first set, and adding the candidate address pairs which are not forwarded by the server into a second set; selecting the candidate address pair with the shortest round-trip delay from the first set to carry out media stream transmission; and when the network transmission quality is lower than a preset level, other candidate address pairs are selected to carry out media stream transmission. According to the method, the media transmission proxy method with the most economical transmission can be intelligently selected.

A method and device for signaling multiple audio mixing gains in a teleconference using a single Real-time Transport Protocol (RTP) header extension is provided. The method includes receiving an input audio stream from a 360-degree video / audio stream that includes multiple mixing gains from the input audio stream and overlay audio stream, declaring a single RTP header extension (including one or more of an element identifier, a length of an extension element, and a magnitude of the mixing gains) for all the mixing gains, and signaling the mixing gains using the single RTP header extension. The single RTP header extension may use a one-byte or two-byte header extension format which is declared using a Session Description Protocol (SDP).

Aspects of the disclosure provide a method and apparatus, computer readable medium for media session management in wireless communication. The method includes obtaining session description protocol (SDP) information within a session initiation protocol (SIP) payload associated with a media session, a media session management module of a VAL server sending a network resource request including the SDP information to a network resource management (NRM) server. The NRM server can be a service enabler architecture layer (SEAL) server. The network resource request can request network resources. The method further includes the VAL server receiving an evaluation of the network resource request from the NRM server. Based on the received evaluation, establishing or terminating the media session in the media session management module of the VAL server.

A device receives a Session Initiation Protocol (SIP) message containing a Session Description Protocol (SDP) offer for a communications session from a first endpoint. The SDP offer includes a first parameter indicating whether the communications session will include media encoding TTY data, audio data, or both TTY data and audio data. The device reads the first parameter and sends an SDP answer including a second parameter indicating whether the device is configured to process media encoding TTY data, audio data, or both TTY data and audio data.

Methods, systems, and devices for wireless communication are described. For example, the described techniques provide a first wearable device and a second wearable device to initiate a media session with a user equipment (UE) and a terminal device. Wearable devices may each initiate a session flow by sending a session description protocol (SDP) provision message to a terminal device. In some examples, the wearable device may send capability information to the UE, and the UE may send an SDP provision message to the terminal device. The terminal device may start a session by sending one or more SDP acknowledgement messages after receiving the one or more SDP provision messages. The wearable devices may each send information about a user of the wearable device. The terminal device may generate a media content stream, and the UE may propagate the media content stream to the wearable device.

The invention belongs to the field of streaming media transmission and audio processing, and discloses an RTSP protocol-based audio stream processing method and a related device, and the method comprises the steps: receiving an audio stream playing request sent by a client; an RTSP GET command is sent to the voiceprint equipment; wherein the RTSP GET command is used for verifying whether a voiceprint device supports RTSP protocol stream taking or not; sending the abstract authentication request to the voiceprint equipment, and receiving session description protocol information returned by the voiceprint equipment; an RTSP SETUP command is sent to the voiceprint device; the RTSP SETUP command is used for specifying a transmission parameter of the audio stream; receiving, analyzing and recombining an RTP audio data packet sent by the voiceprint equipment to obtain an audio stream in a preset format; pushing the audio stream in the preset format to the client; according to the method, the compatibility and deployment efficiency of multi-manufacturer equipment are effectively improved, the data transmission safety is guaranteed, and the method is suitable for the high-reliability audio stream processing requirement of an electric power inspection scene.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method for operation of a first device in a wireless communication system, according to an embodiment of the present disclosure, may comprise the steps of: negotiating a media parameter with a second device by using a session description protocol (SDP); transmitting, to the second device, first real-time transport protocol (RTP) data including a first extension header associated with a round-trip time (RTT); and in response to the first RTP data, receiving, from the second device, second RTP data including a second extension header associated with the RTT, wherein the SDP for the negotiation for the media parameter includes information for associating the first extension header with the second extension header.

The invention relates to a data channel establishment method and device, communication equipment, a storage medium and a computer program product. The method comprises the steps that a session description protocol (SDP) proposal is carried in a first communication request, the SDP proposal comprises application information of a target application of a second terminal side, and the application information comprises one or more of identification, version and compatibility information; comparing the application information in the first communication request with the application information stored in the first terminal to obtain a compatibility judgment result; and if the compatibility judgment result represents that the application at the first terminal side is incompatible, downloading a compatible application and establishing an application data channel based on the identifier and the version, thereby reducing signaling interaction with a network and flow consumption caused by repeatedly downloading the application, reducing time delay of establishing an ADC channel, improving communication efficiency, and improving the user experience. And the compatibility of applications at two ends of the ADC channel can be ensured.

An example apparatus for communicating media data includes a memory configured to store media data; and a processing system comprising one or more processors implemented in a circuit, the processing system configured to: receive a session description protocol (SDP) message, the session description protocol (SDP) message comprising configuration information representing at least one of a protocol data unit (PDU) set flag or an end of burst (EoB) flag for a communication session; transmitting information representing a PDU set flag or an EoB flag for the communication session to a real-time communication (RTC) application function; and processing media data of the communication session, the media data including at least one of a PDU set having a PDU set tag or an EoB having an EoB tag according to the configuration information.

Aspects of the disclosure provide a method and a vertical application layer (VAL) server for a media session management in wireless communication. The method includes obtaining session description protocol (SDP) information within a session initiation protocol (SIP) payload associated with a media session and sending a network resource request comprising the SDP information, by a processing circuitry of a media session management module of the VAL server, to a network resource management (NRM) server. The NRM server can be a service enabler architecture layer (SEAL) server. The network resource request can request a network resource. The method further includes receiving, by the VAL server, an evaluation for the network resource request from the NRM server. The media session can be established or terminated based on the received evaluation in the media session management module of the VAL server.

The invention discloses a communication method and device, network side equipment and a readable storage medium, and belongs to the technical field of communication, and the communication method comprises the steps that a first network node receives a first message, and the first message is used for requesting to call a second terminal; under the condition that a first condition is met, the first network node executes a first operation, and the first condition comprises any one of the following items: the first terminal accesses a network through a first satellite, and the first message comprises at least one of first indication information and a first SDP (Session Description Protocol) offer; the first indication information indicates at least one of the following items: the first terminal supports an early media, the first terminal supports an early session, and the first SDP offer is used for negotiating parameters corresponding to transmission of the early media; the first message comprises at least one of first indication information and a first SDP buffer; the first operation comprises at least one of the following items: deleting first indication information from the first message; modifying the first indication information; and deleting the first SDP offer from the first message.