Abstract: Data can be sent from a sender to a receiver with reliability of transmission encoding data blocks into packets each having a packet header and a packet payload, a block size, a global packet sequence number that uniquely identifies the packet relative to other packets of the data, a block identifier of the data block, and an encoding identifier. The sender determines from feedback from the receiver whether packets are lost and sends repair packets as needed.

Abstract: Data can be sent from a sender to a receiver with reliability of transmission encoding data blocks into packets each having a packet header and a packet payload, a block size, a global packet sequence number that uniquely identifies the packet relative to other packets of the data, a block identifier of the data block, and an encoding identifier. The sender determines from feedback from the receiver whether packets are lost and sends repair packets as needed.

Abstract: Systems and methods which implement forward checking of data integrity are disclosed. A storage system of embodiments may, for example, comprise data integrity forward checking logic which is operable to perform forward checking of data integrity in real-time or near real-time to check that a number of node failures can be tolerated without loss of data. Embodiments may be utilized to provide assurance that a number of fragments needed for source data recovery will be available for the source objects most susceptible to failure when a certain number of additional fragments are lost, such as due to storage node failures.

Abstract: Encoding of a plurality of encoded symbols is provided wherein an encoded symbol is generated from a combination of a first symbol generated from a first set of intermediate symbols and a second symbol generated from a second set of intermediate symbols, each set having at least one different coding parameter, wherein the intermediate symbols are generated based on the set of source symbols. A method of decoding data is also provided, wherein a set of intermediate symbols is decoded from a set of received encoded symbols, the intermediate symbols organized into a first and second sets of symbols for decoding, wherein intermediate symbols in the second set are permanently inactivated for the purpose of scheduling the decoding process to recover the intermediate symbols from the encoded symbols, wherein at least some of the source symbols are recovered from the decoded set of intermediate symbols.

Abstract: Transport accelerator (TA) systems and methods for accelerating delivery of content to a user agent (UA) of a client device are provided according to embodiments of the present disclosure. Embodiments comprise a TA architecture implementing a connection manager (CM) and a request manager (RM). A CM of embodiments requests chunks of content from a content server, receives data in response to requesting the chunks of content, wherein the received data is missing data from a requested chunk of content, and provides a receipt acknowledgement (ACK) for the missing data. The received data, which is missing data from a requested chunk of the chunks of content, may be passed through a communication protocol stack to an application for assembly into a one or more content objects.

Abstract: Systems and methods which are adapted to provide transport accelerator operation through the use of user agent (UA) signaling are disclosed. In operation according to embodiments, a transport accelerator (TA) analyzes content requests to determine if the content request includes an indication that transport acceleration functionality is to be provided. If such an indication is present, the TA further analyzes the content request to determine if transport acceleration functionality will be provided.

Abstract: Encoding of a plurality of encoded symbols is provided wherein an encoded symbol is generated from a combination of a first symbol generated from a first set of intermediate symbols and a second symbol generated from a second set of intermediate symbols, each set having at least one different coding parameter, wherein the intermediate symbols are generated based on the set of source symbols. A method of decoding data is also provided, wherein a set of intermediate symbols is decoded from a set of received encoded symbols, the intermediate symbols organized into a first and second sets of symbols for decoding, wherein intermediate symbols in the second set are permanently inactivated for the purpose of scheduling the decoding process to recover the intermediate symbols from the encoded symbols, wherein at least some of the source symbols are recovered from the decoded set of intermediate symbols.

Abstract: Embodiments providing co-derived data storage patterns for use in reliably storing data and/or facilitating access to data within a storage system using fragments of source objects are disclosed. A set of data storage patterns for use in storing the fragments distributed across a plurality of storage nodes may be generated whereby the set of data storage patterns are considered collectively to meet one or more system performance goals. Such co-derived data storage pattern sets may be utilized when storing fragments of a source object to storage nodes of a storage system. Co-derived pattern set management logic may generate co-derived data storage pattern sets, select/assign data storage patterns of a co-derived data storage pattern set for use with respect to source objects, modify data storage patterns of a co-derived data storage pattern set, and generate additional data storage patterns for a co-derived data storage pattern set in accordance with the concepts herein.

Abstract: Transport accelerator (TA) systems and methods for delivery of content to a user agent (UA) of the client device from a content server are provided according to embodiments of the present disclosure. Embodiments of a TA operate to subdivide, by a request manager (RM) of the TA, fragment requests provided by the UA each into a plurality of chunk requests for requesting chunks of the content and to provide, by the RM to a connection manager (CM) of the TA, chunk requests of the plurality of chunk requests for requesting chunks of the content. Requests may thus be made, by the CM, for the chunks of the content from the content server via a plurality of connections established between the CM and the content server.

Abstract: Transport accelerator (TA) systems and methods for accelerating transmission of content from a user agent (UA) of a user device to a remote recipient are provided according to embodiments of the present disclosure. Embodiments comprise a TA architecture implementing a connection manager (CM) and a request manager (RM). A RM of embodiments subdivides fragments of content provided by the UA into a plurality of content chunks, each fragment may be subdivided into multiple content chunks. The RM of embodiments provides content chunks to a connection manager (CM) of the TA for transmitting the content chunks. The CM of embodiments transmits the content chunks via a plurality of connections established between the CM and the remote recipient.

Abstract: Systems and methods which implement forward checking of data integrity are disclosed. A storage system of embodiments may, for example, comprise data integrity forward checking logic which is operable to perform forward checking of data integrity in real-time or near real-time to check that a number of node failures can be tolerated without loss of data. Embodiments may be utilized to provide assurance that a number of fragments needed for source data recovery will be available for the source objects most susceptible to failure when a certain number of additional fragments are lost, such as due to storage node failures.

Abstract: Systems and methods which implement forward checking of data integrity are disclosed. A storage system of embodiments may, for example, comprise data integrity forward checking logic which is operable to perform forward checking of data integrity in real-time or near real-time to check that a number of node failures can be tolerated without loss of data. Embodiments may be utilized to provide assurance that a number of fragments needed for source data recovery will be available for the source objects most susceptible to failure when a certain number of additional fragments are lost, such as due to storage node failures.

Abstract: Encoding of a plurality of encoded symbols is provided wherein an encoded symbol is generated from a combination of a first symbol generated from a first set of intermediate symbols and a second symbol generated from a second set of intermediate symbols, each set having at least one different coding parameter, wherein the intermediate symbols are generated based on the set of source symbols. A method of decoding data is also provided, wherein a set of intermediate symbols is decoded from a set of received encoded symbols, the intermediate symbols organized into a first and second sets of symbols for decoding, wherein intermediate symbols in the second set are permanently inactivated for the purpose of scheduling the decoding process to recover the intermediate symbols from the encoded symbols, wherein at least some of the source symbols are recovered from the decoded set of intermediate symbols.

Abstract: Various embodiments enable managing data requests made by a receiver device for delivery of content segments to the receiver device. A processor may determine a first number of first chunk requests including a first amount of data requested for a content segment. The processor may send the first chunk requests to one or more servers and may receive first data responses at a receiving rate. The processor may determine whether sufficient data responses might not be received by the receiver device in time to recover the content segment by a time deadline associated with the content segment. In response to determining that sufficient data responses to the first chunk requests might not be received by the time deadline, the processor may determine a second number of one or more second chunk requests for the content segment and a second amount of data to request from the one or more servers.

Abstract: A client/receiver downloads data over a network path between a source and the receiver coupled by the network path and stores the media data in a presentation buffer of the receiver and from there it is consumed by a presentation element. The receiver monitors a presentation buffer fill level that represents what portion of the presentation buffer contains media data not yet consumed by a presentation element. The receiver makes requests for additional data to download. If the fill level is above a high fill threshold, the receiver does not make further requests and eventually the fill level goes down. If the fill level is below a low fill threshold, the receiver restarts the downloading and updates the fill level as media data is consumed by the presentation element. The fill level might be measured in units of memory storage capacity and/or units of presentation time.

Abstract: A receiver receives media for playing out using a presentation element of the receiver can make requests and wait for responses, but can also cancel requests, possibly reissuing new requests, to improve a user experience taking into account network and other conditions. The receiver can select a playback rate and make requests at that playback rate, monitor a presentation buffer that stores media data to be consumed by a presentation element, store an indication of a buffer level corresponding to how much of the presentation buffer is occupied by the media data that is received and not yet consumed by the presentation element, maintain a state of an issued request for downloading a selected first chunk of media data, and when an issued request is outstanding, determine, based on network conditions and the state of the issued request, whether to continue the request or cancel the request.

Abstract: Encoding of a plurality of encoded symbols is provided wherein an encoded symbol is generated from a combination of a first symbol generated from a first set of intermediate symbols and a second symbol generated from a second set of intermediate symbols, each set having at least one different coding parameter, wherein the intermediate symbols are generated based on the set of source symbols. A method of decoding data is also provided, wherein a set of intermediate symbols is decoded from a set of received encoded symbols, the intermediate symbols organized into a first and second sets of symbols for decoding, wherein intermediate symbols in the second set are permanently inactivated for the purpose of scheduling the decoding process to recover the intermediate symbols from the encoded symbols, wherein at least some of the source symbols are recovered from the decoded set of intermediate symbols.

Abstract: A client device includes one or more processors configured to receive, from a server device, forward-error corrected data via a plurality of parallel network paths, determine losses of the data over each of the network paths, and send data representing the losses of the data over each of the network paths to the server device. Additionally or alternatively, a client device includes one or more processors configured to receive a first set of encoding units for a first block, wherein the first set of encoding units includes fewer than a minimum number of encoding units needed to recover the first block, after receiving the first set of encoding units, receive a second set of encoding units for a second block, and after receiving the second set of encoding units, receive a third set of encoding units including one or more encoding units for the first block.

Abstract: A client device presents streaming media and includes a stream manager, a request accelerator, and a source component coupled to the stream manager and the request accelerator for determining which requests to make. A rate selection process can make rate decisions so that the buffer is filled when it is low, avoiding erratically changing rates and can choose the correct steady rate quickly. Multimedia download strategies can be used for HTTP that allow for accurate rate estimations, achieving link capacity even if network delays and packet loss rates are high, achieving timely delivery of the stream, and achieving relatively steady download rates with little short term variability. A receiver might use multiple HTTP connections, decompose media requests into smaller chunk requests, synchronize the connections using TCP flow control mechanisms, and request data in bursts. In addition, the receiver might use an HTTP pipelining process to keep the connections busy.

Abstract: A client device presents streaming media and includes a stream manager for controlling streams, a request accelerator for making network requests for content, a source component coupled to the stream manager and the request accelerator for determining which requests to make, a network connection, and a media player. A process for rate estimation is provided that will react quickly to reception rate changes. The rate estimator can use an adaptive windowed average and take into account the video buffer level and the change in video buffer level in a way so to guarantee that the rate adjusts fast enough if there is a need, while keeping the windowing width large (and thus the measurement variance) large. A guarantee might be that when a rate drop or rise happens, the estimator adjusts its estimate within a time proportional to a buffer drain rate or buffer fill level.