Telefonaktiebolaget Lm Ericsson (Publ)

Magnus Westerlund

Göran Eriksson

Rickard Sjöberg

Jonatan Samuelsson

Thorsten Lohmar

Robert Bengt Skog

Miguel Angel Muñoz De La Torre Alonso

Attila Mihály

Bo Burman

Torbjörn Einarsson

Per Fröjdh

Stefan Håkansson

Markus Andersson

Gunnar Heikkilä

Tommy Falk

John Mattsson

Beatriz Grafulla-González

Anders Nohlgren

Muhammad Azam Akram

Jari Arkko

Anders K Eriksson

Göran Rune

Clinton Priddle

Jonas Svedberg

Justus Petersson

Ingemar Johansson

Uwe Horn

Marcus Ihlar

Claudio Porfiri

Jim Sundqvist

Jesus-Angel de-Gregorio-Rodriguez

Frederic Gabin

Zaheduzzaman Sarker

Eric Daniel Gröndal

Anders Tomas Uvliden

Magnus Andersson

Alessio Terzani

Per Boussard

Alfred Samuelson

Simone Ferlin

Mirja Kuehlewind

Anders Eriksson

Jesus-Angel De Gregorio Rodriguez

Svetlana Chermiakina

Embodiments include methods, electronic device, storage medium, and computer program to implement parallel Data-gram Transport Layer Security (DTLS) connections over a stream control transmission protocol (SCTP) association. In one embodiment, a method at a first network node for encoding user messages for secure transmission to a second network node comprises: initiating a Datagram Transport Layer Security (DTLS) connection over a stream control transmission protocol (SCTP) association through a DTLS handshake using an existing Authenticated Chunks for SCTP (SCTP-AUTH) key from an existing DTLS connection over the SCTP association that transmits user messages: deriving a new SCTP-AUTH key from the initiated DTLS connection: transmitting further user messages through the initiated DTLS connection with the new SCTP-AUTH key: and closing the existing DTLS connection over the SCTP association upon confirmation that SCTP packets encrypted with the existing DTLS connection and SCTP packets authenticated by the existing SCTP-AUTH key have been delivered.

Key replacement during datagram transport layer security (DTLS) connections over stream control transmission protocol (SCTP)

An apparatus in a mobile communication network combines information from monitoring IP flows carrying latency sensitive content passing the apparatus and information about the application behavior and target Quality of Experience (QoE) or target connectivity characteristics such as Quality of Service (QoS) from the application to provide ongoing predictions of QoE/QoS. In some cases, the apparatus exploits a probe on a device to generate traffic for learning flow characteristics not obtained from monitoring application IP flows in the network. Embodiments disclosed herein can be used to predict quality metrics for many applications where jitter/latency is a factor affecting perceived quality, such as QoE for a human consumer or QoS for machine type communications. The embodiments are applicable to the analysis of traffic carrying conversational speech.

Estimating quality metric for latency sensitive traffic flows in communication networks

A decoder receives a set of N compressed segments of a first picture, and a set of M compressed segments for a second picture that follows the first picture in a decoding order. Based on the set of N compressed segments, the decoder constructs a decodable picture for the first picture and decodes the decodable picture. Based on the set of M compressed segments, the decoder constructs a decodable second picture in the compressed domain, in which each of the segments of the first picture are placed at the same spatial position as that of a corresponding segment in the second picture and decodes the decodable second picture. Additionally, at least one Intra coded segment is placed at one of the M spatial positions in the compressed domain in which there is no segment of the N segments.

Tile shuffling for 360 degree video decoding

A method at a first node for encoding a message for secure transmission to a second node comprising. The method includes receiving the message for transmission to the second node and fragmenting the message into a plurality of fragments, wherein each fragment is of a selected size. The method further includes encoding separately each fragment of the plurality of fragments using Datagram Transport Layer Security (DTLS), combining DTLS encoded fragments into a Stream Control Transmission Protocol (SCTP) message, and transmitting the message as a plurality of DTLS encoded fragments in the SCTP message to the second node.

DTLS/SCTP enhancements for RAN signaling purposes

A flexible approach to segmenting a resource (e.g., a media resource, such as a media segment, or other resource, such as a resource normally fetched or pushed using general file transfer protocols like HTTP) into a plurality of fragments. By employing such an approach, the delay until the resource can be utilized at the client side is reduced. Certain embodiments are provided which apply the flexible segmentation approach to ISOBMFF media segments for video streaming, such as would be used with Live DASH streaming.

Resource segmentation to improve delivery performance

A decoder () receives () a set of N compressed segments of a first picture, and a set of M compressed segments for a second picture that follows the first picture in a decoding order. Based on the set of N compressed segments, the decoder constructs a decodable picture for the first picture and decodes () the decodable picture. Based on the set of M compressed segments, the decoder constructs a decodable second picture in the compressed domain, in which each of the segments of the first picture are placed at the same spatial position as that of a corresponding segment in the second picture, and decodes () the decodable second picture. Additionally, at least one Intra coded segment is placed at one of the M spatial positions in the compressed domain in which there is no segment of the N segments.

A method to be performed by a receiving apparatus for decoding an encoded bitstream representing a sequence of pictures of a video stream is provided. In the method, capabilities relating to level of decoding parallelism for the decoder are identified, a parameter indicative of the decoder's capabilities relating to level of decoding parallelism is kept, and for a set of levels of decoding parallelism, information relating to HEVC profile and HEVC level that the decoder is capable of decoding is kept. A method for encoding a bitstream representing a sequence of pictures of a video stream is also provided. In the method, a parameter is received from a transmitting apparatus that should decode the encoded bitstream.

Apparatus and methods thereof for video processing

According to a yet further aspect of the embodiments of the present invention a serverconfigured to bind a device application to a web service is provided. The server comprises WebRTC functionality. The server is configured to receive a request for the web service from the device application, wherein communication between the server and the device application is done via https and WebRTC and the device application is configured to generate WebRTC credentials comprising a private key, certificate of the private key and a fingerprint of the certificate. The server is configured to receive the fingerprint and fingerprint generation algorithm of the certificate, store the fingerprint and fingerprint generation algorithm and associating the fingerprint with the device application, and use DTLS, providing the certificate of the device application, in combination with the stored fingerprint to identify the device application to bind the device application to the web service.

Methods and arrangements for binding a device application to a web service

Systems and methods that are particularly well-suited for service-based core network endpoint authentication are disclosed. In some embodiments, a method of operation of a network node implementing a second network function in a core network of a cellular communications system comprises receiving, at a main service of the second network function, a request from a first network function for a desired service via Hypertext Transfer Protocol/Representational State Transfer (HTTP/REST) signaling. The request comprises information that identifies one or more delegate endpoints of the first network function that expose one or more delegate services, respectively, of the first network function for providing the desired service using one or more different communication styles. The method further comprises initiating the desired service using a selected delegate endpoint from the one or more delegate endpoints identified by the information comprised in the request.

Service-based 5G core authentication endpoints

There is provided mechanisms for decoding a media stream. A method is performed by a packet receiver. The method comprises receiving packets. The packets have been transmitted by a packet transmitter. The packets define the media stream and each packet comprises encoded media. The method comprises decoding the encoded media into at least a first decoded version and a second decoded version. For the first decoded version only a subset of the packets decoded for the second decoded version are decoded. The subset includes only those of the packets that are received within a first threshold time delay from having been transmitted by the packet transmitter.

Decoding of a media stream at a packet receiver

It is presented a method for a server for enabling setting up a secure peer-to-peer connection between a first peer and a second peer. The method comprises the steps of: receiving a request for a web application from the first peer; sending a directive to the first peer requesting a fingerprint of a certificate of the first peer; receiving a first fingerprint from the first peer; and sending the first fingerprint to the second peer.

Enabling setting up a secure peer-to-peer connection

There is provided mechanism for providing Web based applications with network information. A need for a Web based application to transmit a real time media flow is acquired. Transport characteristics relating to transmission of the real time media flow over a communications network is acquired. From the acquired transport characteristics and according to a policy criterion a resource allocation to the real time media flow is determined. The determined resource allocation is provided to at least one of the Web based application and a browser associated with the Web based application.

Allocation of resources for real-time communication

Growing community of inventors

Kista, Sweden

Magnus Westerlund