Patent classifications
H04L43/106
Load balancing during increased data traffic latency
A system includes at least one server that is configured to provide a multi-client network service to a plurality of existing users. When the server receives requests to join the multi-client network service from new users, the server may issue timestamps to each new user, obtain load metric based on the requests or timestamps, and collect the load metric to obtain historical data characterizing a demand in the multi-client network service over time. Further, based on the historical data, the server can predict a future load demand in the multi-client network service and selectively enable to join the multi-client network service by at least one of the plurality of new users based on the future load demand.
Cable latency measurement
In one embodiment, a system includes a first data communication device including packet processing circuitry to provide a probe packet including an egress timestamp TS1 indicating a time at which the probe packet egresses the first data communication device, and a network interface to send the probe packet via at least one network connection to a second data communication device, and receive from the second data communication device a response packet including the egress timestamp TS1, wherein the packet processing circuitry is configured to associate with the response packet an ingress timestamp TS2 indicating a time at which the response packet ingresses the first data communication device, and a network metric processor to compute a data latency in the at least one network connection responsively to TS1, TS2, and an indication of an internal latency of the probe packet in the second data communication device.
Cable latency measurement
In one embodiment, a system includes a first data communication device including packet processing circuitry to provide a probe packet including an egress timestamp TS1 indicating a time at which the probe packet egresses the first data communication device, and a network interface to send the probe packet via at least one network connection to a second data communication device, and receive from the second data communication device a response packet including the egress timestamp TS1, wherein the packet processing circuitry is configured to associate with the response packet an ingress timestamp TS2 indicating a time at which the response packet ingresses the first data communication device, and a network metric processor to compute a data latency in the at least one network connection responsively to TS1, TS2, and an indication of an internal latency of the probe packet in the second data communication device.
DISCONTINUITY DETECTION IN TRANSPORT STREAMS
Methods and apparatuses for detecting timestamp discontinuities and video resolution discontinuities within a packet stream and marking locations of the detected discontinuities within the packet stream are described. Prior to transmission of the packet stream, an electronic device may perform timestamp discontinuity detection by acquiring a sequence of packets to be transmitted, identifying a first timestamp associated with an earliest packet within the sequence of packets, identifying a second timestamp associated with a latest packet within the sequence of packets, determining a timestamp time difference between the first timestamp and the second timestamp, determining a maximum chunk time difference based on a data rate at which the sequence of packets were encoded and a data size of the encoded packets, and detecting that a timestamp discontinuity exists within the sequence of packets if the timestamp time difference is greater than the maximum chunk time difference.
DISCONTINUITY DETECTION IN TRANSPORT STREAMS
Methods and apparatuses for detecting timestamp discontinuities and video resolution discontinuities within a packet stream and marking locations of the detected discontinuities within the packet stream are described. Prior to transmission of the packet stream, an electronic device may perform timestamp discontinuity detection by acquiring a sequence of packets to be transmitted, identifying a first timestamp associated with an earliest packet within the sequence of packets, identifying a second timestamp associated with a latest packet within the sequence of packets, determining a timestamp time difference between the first timestamp and the second timestamp, determining a maximum chunk time difference based on a data rate at which the sequence of packets were encoded and a data size of the encoded packets, and detecting that a timestamp discontinuity exists within the sequence of packets if the timestamp time difference is greater than the maximum chunk time difference.
Switchable chroma sampling for wireless display
Methods, apparatuses and systems may provide for a video transmitter that generates a primary bitstream based on a video signal, wherein the primary bitstream is encoded with subsampled chroma information, and detects a static condition with respect to the video signal. Additionally, a plurality of auxiliary bitstreams may be generated, in response to the static condition, based on the video signal. Each of the plurality of auxiliary bitstreams may be encoded with full resolution chroma information. In one example, a video receiver may detect that the auxiliary bitstreams are associated with the primary bitstream, decode the primary bitstream and the plurality of auxiliary bitstreams to obtain luma information and the full resolution chroma information, and multiplex the luma information with the full resolution chroma information.
Switchable chroma sampling for wireless display
Methods, apparatuses and systems may provide for a video transmitter that generates a primary bitstream based on a video signal, wherein the primary bitstream is encoded with subsampled chroma information, and detects a static condition with respect to the video signal. Additionally, a plurality of auxiliary bitstreams may be generated, in response to the static condition, based on the video signal. Each of the plurality of auxiliary bitstreams may be encoded with full resolution chroma information. In one example, a video receiver may detect that the auxiliary bitstreams are associated with the primary bitstream, decode the primary bitstream and the plurality of auxiliary bitstreams to obtain luma information and the full resolution chroma information, and multiplex the luma information with the full resolution chroma information.
SIMULTANEOUS LOCALIZATION AND SYNCHRONIZATION ACROSS MULTIPLE ANTENNAS
A computer-implemented method for identifying a device position is provided. The method includes synchronizing a clock between a first device and a second device to obtain a synchronized clock. The method further includes measuring a round-trip time of flight between an antenna from the first device and an antenna from the second device based on the synchronized clock. The method also includes estimating a relative angular position of the second device with respect to the first device based on the round-trip time of flight. The method additionally includes estimating a distance between the first device and the second device based on estimated round-trip time of flight. The method further includes estimating, by the first device, a position of the second device with respect to a known coordinate based on the relative angular position and the distance.
Methods and apparatus to credit background applications
Examples disclosed herein include means for comparing bandwidth usage of an application executing in a background of a device to a threshold to determine a state of the application as one of active or inactive, means for logging event records associated with the application, and means for crediting a duration of background execution of the application. In disclosed examples, the means for crediting is to determine whether the bandwidth usage pattern is spiked or continuous based on a first event record representative of background execution of the application being started, update a second event record to be representative of the background execution of the application being stopped when the bandwidth usage pattern is spiked and a timestamp of the second event record exceeds a temporal activity window, and determine the duration of the background execution of the application based on the first event record and the second event record.
ROUND-TRIP TIME AS A LATENCY PERFORMANCE INDICATOR
Methods, systems, and devices for wireless communications are described. A wireless communications entity, such as a user equipment (UE), a base station, a network core, or an application server, may identify a round-trip time (RTT) latency requirement that may pertain to a round-trip latency in wireless communications between the UE and the base station. The wireless communications entity may identify a one one-way directional delay budget that satisfies the RTT latency requirement for an application of an application server. The application server may be in communication with the UE via the base station. The wireless communications entity may modify a value of the one-way directional delay budget and transmit a message that is associated with the modified value of the one one-way directional delay budget.