Abstract:
In one implementation, a method of maintaining continuous identity for mobile devices includes: obtaining a first address for a first device; and obtaining, from one or more auxiliary sensors, auxiliary sensor information related to the first device. The method also includes determining whether the auxiliary sensor information matches information associated with a second address, where the second address was previously associated with the first device. The method further includes linking the first address with the second address for the first device, in order to continue tracking the first device when the second address is no longer detected, in response to determining that the auxiliary sensor information matches information associated with the second address.
Abstract:
In one implementation, a method includes generating a set of candidate objects based at least in part on a set of image data, where the set of image data includes image data from a plurality of image sources. The method also includes generating a set of visual signatures, wherein each of the visual signatures in the set of visual signatures characterizes a candidate object in the set of candidate objects. The method further includes transforming at least two candidate objects in the set of candidate objects into a single object according to a determination that correspondence between visual signatures for the at least two candidate objects satisfies one or more correspondence criteria.
Abstract:
Congestion control may be provided. A set of rules may allow a congestion control process to switch from delay-mode to loss-mode (e.g., in the presence of loss-based flows) and back to delay-mode (e.g., when loss-based flows stop). Fairness properties of this set of rules may include that the resulting flows may be fair to each other and the flows may also be fair when competing with loss-based flows. Many flows that may be deadlocked in loss-mode (e.g., in the absence of other genuine loss-based flows) may be helped to switch back to delay-mode.
Abstract:
In one implementation, a method of maintaining continuous identity for mobile devices includes: obtaining a first address for a first device; and obtaining, from one or more auxiliary sensors, auxiliary sensor information related to the first device. The method also includes determining whether the auxiliary sensor information matches information associated with a second address, where the second address was previously associated with the first device. The method further includes linking the first address with the second address for the first device, in order to continue tracking the first device when the second address is no longer detected, in response to determining that the auxiliary sensor information matches information associated with the second address.
Abstract:
Congestion control may be provided. A set of rules may allow a congestion control process to switch from delay-mode to loss-mode (e.g., in the presence of loss-based flows) and back to delay-mode (e.g., when loss-based flows stop). Fairness properties of this set of rules may include that the resulting flows may be fair to each other and the flows may also be fair when competing with loss-based flows. Many flows that may be deadlocked in loss-mode (e.g., in the absence of other genuine loss-based flows) may be helped to switch back to delay-mode.
Abstract:
Various implementations disclosed herein enable a more efficient allocation of one or more shared network resources amongst a plurality of client devices based on media content complexity and client device resource status in order to better manage perceptual playback quality. In some implementations, a method includes obtaining a plurality of resource constraint values associated with a plurality of client devices sharing a network resource, and jointly determining a respective encoding rate level selection and a corresponding resource allocation for each of the plurality of client devices based on a combination of one or more resource constraint values and the assessment of the respective perceptual quality level values, such that a combination of resulting quality levels satisfies a joint quality criterion.
Abstract:
Previously known network management practices fail to inform network operators about client-side performance and experience issues. By contrast, various implementations disclosed herein include systems, methods and apparatuses that generate one or more shared-resource traffic quality indicator values. Each shared-resource traffic quality indicator value characterizes at least a portion of the network by assessing a number of network performance characterization values in relation to one or more capacity values of one or more shared network resources. Each network performance characterization values provides a corresponding quantitative characterization of a quality of experience associated with the use of media content data received by a respective client device. In some implementations, quality of experience is characterized by at least one of an indication of perceptual quality of media content data and an indication of continuity with which media content data is used by a respective client device at a particular subscription tier.
Abstract:
A method in one embodiment includes intercepting a message in an on-board unit (OBU) of a vehicular network environment between a source and a receiver in the vehicular network environment, verifying the message is sent from the source, verifying the message is not altered, evaluating a set of source flow control policies associated with the source, and blocking the message if the set of source flow control policies indicate the message is not permitted. In specific embodiments, the message is not permitted if a level of access assigned to the source in the set of source flow control policies does not match a level of access tagged on the message. In further embodiments, the method includes evaluating a set of receiver flow control policies associated with the receiver, and blocking the message if the set of receiver flow control policies indicates the message is not permitted.
Abstract:
Weighted fair sharing of video bandwidth may be provided, for example, over TCP. First, a number of connections with a receiver may be opened. The number of active connections may be proportional to a weighting parameter associated with a stream. Next, the stream may be transmitted over the number of active connections and feedback information may be obtained corresponding to the stream received at the receiver. A quality adaptation may then be made based on the obtained feedback. The process may be repeated over time with the number of active connections changing along with the weighting parameters.
Abstract:
A system includes an on-board unit (OBU) in communication with an internal subsystem in a vehicle on at least one Ethernet network and a node on a wireless network. A method in one embodiment includes receiving a message on the Ethernet network in the vehicle, encapsulating the message to facilitate translation to Ethernet protocol if the message is not in Ethernet protocol, and transmitting the message in Ethernet protocol to its destination. Certain embodiments include optimizing data transmission over the wireless network using redundancy caches, dictionaries, object contexts databases, speech templates and protocol header templates, and cross layer optimization of data flow from a receiver to a sender over a TCP connection. Certain embodiments also include dynamically identifying and selecting an operating frequency with least interference for data transmission over the wireless network.