Microsoft Technology Licensing, LLC

Timothy Mark Moore

Warren Vincent Barkley

Arun Ayyagari

Rajesh Gunnalan

Tin Qian

Anton W Krantz

Pradeep Bahl

Mohammad Shabbir Alam

Abhishek Abhishek

Philip Andrew Chou

Scott C Forbes

Jingyu Qiu

Florin Teodorescu

David Milstein

Regis J Crinon

Avi R Geiger

Jiandong Ruan

Linda Criddle

David Andrew Howell

Humayun Mukhtar Khan

Namendra Kumar

Uladzimir A Skuratovich

Andrey Belenko

Vadim Eydelman

Jeffrey Charles Venable, Sr

Bernard D Aboba

Paul D Tidwell

Michael D Malueg

Vivek Bhanu

Krishna Ganugapati

Shiwei Wang

Ling Niu

Kuansan Wang

Sean O Lyndersay

Ashwin Palekar

Jiannan Zheng

Sachin C Sheth

Yinghua Yao

Zong Zong Yuan

Ming-Chieh Lee

John Charles Krumm

Daniel Ron Simon

Taroon Mandhana

William Michael Zintel

Adrian Mark Chandley

Yoram Bernet

Jeremy Thomas Buch

Salim S AbiEzzi

Jean-Pierre Duplessis

Srivatsa K Srinivasan

Steven A N Shafer

Dan Knudson

Ari Pekka Niikkonen

Mark T Jeffrey

Edwin A Hernandez-Mondragon

Geoffrey Edward Pease

Mark R Sestak

Mihai S Peicu

Madhurima Pawar

Amer A Hassan

Paramvir Bahl

Jesper Mikael Johansson

Kenneth D Ray

Jin Li

Christian F Huitema

Ross Garrett Cutler

Shai Guday

Sanjeev Mehrotra

Dawson Yee

Stephane Taine

Dhigha D Sekaran

Sankaran Narayanan

Andrew Thomas Baron

Krishnamurthy Ganesan

Gregory Irving Thiel

Todd Carlyle Luttinen

Trevor William Freeman

Gunter Leeb

Andrew Peter Sinclair

David Ross Buerer

Brian Scott Stucker

Wei Zhong

Ervin Peretz

Calvin Choe

Guo-Wei Shieh

Christopher Jon Lang

Ce Wang

Sean C Olson

Dalen Matthew Abraham

Dalibor Kukoleca

Konstantin E Ryvkin

Denise L Chen

Narendra C Gidwani

Kensaku Sueda

Andreas Strebel

Hakan Berk

Gareth L E Bridges

Xiaowen Shan

Arvind Jayasundar

Anthony J Bawcutt

A method for directing network traffic includes, at a network device, receiving network traffic provided by one or more client computing devices. The network device directs the network traffic to a service entity over a first network path. A path quality indicator is received that indicates whether the network traffic directed over the first network path satisfies one or more experience criteria. Based at least on the path quality indicator indicating that the network traffic directed over the first network path does not satisfy the one or more experience criteria, the network device redirects some or all of the network traffic to the service entity over a second network path.

Network path redirection

In a device including a processor and a memory in communication with the processor, the memory includes executable instructions that, when executed by the processor, cause the processor to control the device to perform functions of connecting to a plurality of remote devices, using a network address and a port number that are usable for a plurality of remote devices to access the device; providing a plurality of tokens to a plurality of remote devices, respectively, each token being unique and associated with a different one of the plurality of remote devices; receiving from a first remote device, a first data packet including first media data and a first token associated with the first remote device; and identifying, based on the received first token, the first remote device as a source of the received first data packet.

Conferencing server

Techniques for endpoint configuration for a communication session are described. According to various implementations, a cloud-based connectivity service maintains network path information that identifies routing paths for routing communication sessions across different networks. The connectivity service is also able to determine configuration information for configuring endpoint devices to participate in a communication session. According to various implementations, configuration information is determined based on a packet quality of a routing path. Thus, an endpoint device can apply the configuration information to attempt to increase packet quality across a routing path, and thus increase media quality for a communication session at the endpoint device.

Endpoint configuration for a communication session

A media session is established between a first device (e.g., endpoint) and a second device (e.g., endpoint) via a communication network based on connectivity checks performed by the devices. A set of candidate pairs, including network addresses available to the first device and the second device, is generated. Among the candidate pairs of the candidate pair set, a respective priority is initially assigned for connectivity checks. If a connectivity check modification condition is determined to be met for candidate pairs used for connectivity checks, the priority ordering of the candidate pairs is modified to produce a second priority ordering. This second priority ordering assigns a higher priority for a candidate pair which meets the connectivity check modification condition than a candidate pair that does not meet the condition. Based on the modified ordering, connectivity checks are performed, and the media session is configured and established using a candidate pair determined to be valid.

Media session between network endpoints

A communication event is established between an initiating device and a responding device under the control of a remote communications controller. In a pre-session establishment phase: a compression dictionary or a dictionary link that identifies an addressable memory location, at which a compression dictionary is held, is received at the initiating device. The received compression dictionary or the received dictionary link is stored in electronic storage of the initiating device. In response to a communication event establishment instruction received at the initiating device after the dictionary or the dictionary link has been received and stored at the initiating device, a session is established between the initiating device and the communications controller by the initiating device transmitting an initial session establishment message&#x2014;compressed using the dictionary&#x2014;to the communications controller to establish the communication event.

Data compression for communications signalling

Techniques for a session identifier for a communication session are described. According to various implementations, a session identifier that is usable for initiating a communication session is allocated prior to the communication session being initiated. The session identifier can then be activated to enable the session identifier to be used for routing data packets of a communication session.

Session identifier for a communication session

A media session is configured between a first endpoint and a second endpoint on a communication network based on connectivity checks performed by the endpoints. When a reduced connectivity check condition is met, based on characteristics of the communication network operable between the first endpoint and the second endpoint, a reduced candidate pairing procedure is initiated. The reduced candidate pairing procedure includes connectivity checks performed from the first endpoint with a reduced set of candidate pairs that is smaller than an available set of candidate pairs. The reduced set of candidate pairs is identified based on the characteristics of the communication network at the respective pairs, and a particular candidate pair in the reduced set is determined to be valid based on a result of connectivity checks using the candidate pair.

A communication event is established between an initiating device and a responding device under the control of a remote communications controller. In a pre-communication event establishment phase, a secure connection is established between the initiating device and the communications controller, and session key negotiation messages are exchanged between the initiating device and the communications controller via the secure connection to obtain session key data in an electronic storage location accessible to the initiating device. The secure connection terminates once the session key data has been obtained. In a subsequent communication event establishment phase&#x2014;after the session key data has been obtained and the secure connection has terminated in the pre-establishment phase&#x2014;a communication event request is transmitted from the initiating device to the communications controller comprising a payload encrypted with the session key data.

Establishing a communication event using secure signaling

Establishing a communication event using secure signalling

A session is established between an initiating device and a remote device. A session request is transmitted from the initiating device to the remote device according to a preferred networking protocol. If no provisional response to the request is received at the initiating device within an initial duration, the initiating device transmits another session request to the other device according to a non-preferred protocol. If a provisional response to the request is received within the initial duration, the initiating device continues to monitor the elapsed time for an so extended duration. If no final response to the request is received within the extended duration, the initiating device transmits another session request to the other device according to a non-preferred protocol. If a final response is received within the extended duration, a session between the initiating device and the other device is established according to the preferred networking protocol.

Protocol fallback

A conferencing server is directly accessible from the public Internet and has a host transport address, which is a combination of a public IP address on the public Internet and an associated port. It comprises conference hosting logic for hosting at least one conference, in which media data is transmitted and received via the conferencing server between participant endpoints; media processing logic configured to process received media data of the conference for transmission in the conference; multiplexing control logic configured to determine a plurality of multiplexing tokens to be used by the participant endpoints; and demultiplexing logic configured to identify received multiplexing tokens in transport layer payload data of a sequence data packets received from the participant endpoints at the host transport address, and use the multiplexing tokens identified in the transport layer payload data to demultiplex the data packets for processing by the media processing logic.

Conferencing server directly accessible from public internet

A media session between an initiating endpoint and a responding endpoint is effected, there being a plurality of available paths through a communication network via which the media session could be established. Type metrics associated with the available paths convey the directness of the available paths and are for making a selection of an available path for the media session. Network information indicative of the quality of the available paths and collected from a plurality of network nodes comprises contributions from network nodes other than the initiating and receiving endpoints which have current and/or have had past visibility of at least parts of the available paths. Said selection is influenced so as to cause the endpoints to select for the media session a higher quality but less direct available path in favor of a more direct but lower quality available path.

A media session is established between a first endpoint and a second endpoint, by transmitting the following messages from the first endpoint in parallel: to the second endpoint, a message indicating a first server network address of a media relay server available to the first endpoint and comprising a unique session identifier; to the media relay server, an activation request comprising the unique session identifier. This activates the session identifier by causing it to be associated at the media relay server with a source address conveyed by the activation request. Once the session identifier has been activated, a media packet received from the second endpoint at the first server network address that comprises the unique session identifier is relayed from the media relay server to the source address for receiving by the first endpoint.

Media Session

A media session between a first device and a second device is established. The following candidate pairs are determined at the first device, by exchanging network addresses between the devices: (i) a relayed-relayed candidate pair comprising a first media relay server network address and a second media relay server, and (ii) at least one alternative candidate pair. Connectivity checks are performed for at least the alternative candidate pair to determine whether or not the alternative candidate pair is valid. However, the media session is established initially using the relayed-relayed candidate pair without any connectivity checks having been performed by the devices for the relayed-relayed candidate pair and before the connectivity checks for the alternative candidate pair have been completed. If the alternative candidate pair is determined to be valid in the connectivity checks, the established media session is switched to the alternative candidate pair in response.

Media session

Growing community of inventors

Bellevue, WA, United States of America

Timothy Mark Moore