At&t Intellectual Property I, L.p.

Gregory J Smith

Robert Sayko

Oliver Spatscheck

Han Q Nguyen

Steven Howard Nurenberg

Xiaowen Mang

Carolyn Roche Johnson

Christopher M Stratton

Thomas C Potter

Vishwa M Prasad

Wayne R Perry-Eaton

Ramana V Munagala

Peni-Taito Payne

Robert C Parrott

Bruce S Beattie

James Micak

Paul Garcia

The described technology is generally directed towards latency diagnostics for multiparty systems, such as a system comprising a communication network, a content delivery network (CDN), and one or more internet service providers (ISPs). A latency analyzer component can process latency data in response to a latency diagnostic trigger, such as an alert from a video quality monitoring system. The latency analyzer can determine whether latency is attributable to the communication network. If not, the latency analyzer can determine whether the latency is attributable to the CDN. If the latency is not attributable to the communication network or the CDN, the latency analyzer can determine that the latency is attributable to the ISP, and the latency analyzer can identify the ISP and generate appropriate reports and notifications.

Latency diagnostics for multiparty systems

Aspects of the subject disclosure may include, for example, identifying a threshold value of a streaming-media key performance indicator (KPI) based on a predetermined target portion of end-user devices that provide an acceptable performance. Performance records are obtained for a content delivery network (CDN) adapted to cache and serve media content requested by the end-user devices. Predicted values of the streaming-media KPI are generated according to the performance records of the CDN and compared to the threshold value of the streaming-media KPI to obtain a comparison. An anomaly is detected according to the comparison, to indicate that a predetermined number of the predicted values of the streaming-media KPI fail to satisfy the threshold value. Other embodiments are disclosed.

Method and system for quantifying effects of a content delivery network server on streaming-media quality and predicting root cause analysis

A cache server receives content and an instruction indicating an event associated with the content that causes a processor to invoke a call out to an adjunct device. The instruction further indicates an operation that the adjunct device is to perform. The cache server detects the event associated with the content, halts a flow of the content in response to detecting the event associated with the content, passes via the call out the content to the adjunct device to perform the operation, receives from the adjunct device a response and resulting data from the operation, and performs an additional operation on the resulting data based on the response from the adjunct device.

System and method for providing an adjunct device in a content distribution network

A network is configured to utilize available bandwidth to conduct bulk data transfers without substantially affecting the successful transmission of time-sensitive traffic in the network. In order to avoid this interference, the packets carrying data for bulk data transfers are associated with a low priority class such that the routers of the network will preferentially drop these packets over packets associated with the normal traffic of the network. As such, when the normal traffic peaks or there are link failures or equipment failures, the normal traffic is preferentially transmitted over the bulk-transfer traffic and thus the bulk-transfer traffic dynamically adapts to changes in the available bandwidth of the network. Further, to reduce the impact of dropped packets for the bulk-transfer traffic, the packets of the bulk-transfer traffic are encoded at or near the source component using a loss-resistant transport protocol so that the dropped packets can be reproduced at a downstream link.

Bulk data transport in a network

A system for providing a multi-delivery-method policy-controlled client proxy is disclosed. The system may receive a request for a network service from a client. Based on the request for the network service, the system may detect the presence of a client proxy associated with the client. If client proxy is detected, the system may provide a data object that includes information that indicates that the client proxy is a primary source for content that may be requested by the client. The system may redirect, based on the data object, a request for the content received from the client to the client proxy. The system may then obtain, via the client proxy, the content by utilizing a delivery method that is selected based on a policy. Finally, the system may provide, via the client proxy, the content to the client.

Multi-delivery-method policy-controlled client proxy

Multi delivery method policy controlled client proxy

A network is configured to utilize available bandwidth to conduct bulk data transfers without substantially affecting the successful transmission of time-sensitive traffic in the network. In order to avoid this interference, the packets carrying data for bulk data transfers are associated with a low priority class such that the routers of the network will preferentially drop these packets over packets associated with the normal traffic of the network. As such, when the normal traffic peaks or there are link or equipment failures, the normal traffic is preferentially transmitted over the bulk-transfer traffic and thus the bulk-transfer traffic dynamically adapts to changes in the available bandwidth of the network. Further, to reduce the impact of dropped packets for the bulk-transfer traffic, the packets are encoded at or near the source component using a loss-resistant transport protocol so that the dropped packets can be reproduced at a downstream link.

System and method for providing an adjunct device in a content delivery network

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Shrewsbury, NJ, United States of America

Gregory J Smith