摘要:
A method for measuring degree of packet congestion on a channel of a packet communication network. The method includes: during a training mode, generating an mathematical relationship between the degree of packet congestion on the channel and a plurality of measurable features of the network over a plurality of network conditions; and, during a subsequent normal operating mode, periodically measuring the plurality of measurable features and applying the generated mathematical relationship to such periodically measured plurality of measurable features to determine actual degree of congestion on the channel; and comparing the actual degree of congestion on the channel with a predetermined channel congestion threshold level. The degree of packet congestion on the channel is saturation level. The measurable features include: lime delay between transmission starts and terminations of the previously transmitted packet; the fraction of time the channel is busy; and. average number of packet transmission retries.
摘要:
A method for measuring degree of packet congestion on a channel of a packet communication network. The method includes: during a training mode, generating an mathematical relationship between the degree of packet congestion on the channel and a plurality of measurable features of the network over a plurality of network conditions; and, during a subsequent normal operating mode, periodically measuring the plurality of measurable features and applying the generated mathematical relationship to such periodically measured plurality of measurable features to determine actual degree of congestion on the channel; and comparing the actual degree of congestion on the channel with a predetermined channel congestion threshold level. The degree of packet congestion on the channel is saturation level. The measurable features include: time delay between transmission starts and terminations of the previously transmitted packet; the fraction of time the channel is busy; and, average number of packet transmission retries.
摘要:
A method for measuring degree of packet congestion on a channel of a packet communication network. The method includes: during a training mode, generating an mathematical relationship between the degree of packet congestion on the channel and a plurality of measurable features of the network over a plurality of network conditions; and, during a subsequent normal operating mode, periodically measuring the plurality of measurable features and applying the generated mathematical relationship to such periodically measured plurality of measurable features to determine actual degree of congestion on the channel; and comparing the actual degree of congestion on the channel with a predetermined channel congestion threshold level. The degree of packet congestion on the channel is saturation level. The measurable features include: time delay between transmission starts and terminations of the previously transmitted packet; the fraction of time the channel is busy; and, average number of packet transmission retries.
摘要:
A method for measuring degree of packet congestion on a channel of a packet communication network. The method includes: during a training mode, generating an mathematical relationship between the degree of packet congestion on the channel and a plurality of measurable features of the network over a plurality of network conditions; and, during a subsequent normal operating mode, periodically measuring the plurality of measurable features and applying the generated mathematical relationship to such periodically measured plurality of measurable features to determine actual degree of congestion on the channel; and comparing the actual degree of congestion on the channel with a predetermined channel congestion threshold level. The degree of packet congestion on the channel is saturation level. The measurable features include: time delay between transmission starts and terminations of the previously transmitted packet; the fraction of time the channel is busy; and, average number of packet transmission retries.
摘要:
A method for controlling congestion for real-time video transmission in a wireless network includes receiving a packet loss rate of a video camera in a wireless network, receiving an estimated maximum throughput of the video camera from the camera to a server, decrementing a bit transmission rate when the packet loss rate is greater than a first predetermined threshold, incrementing the bit transmission rate when the packet loss rate is less than a second predetermined threshold for a predetermined time period, and transmitting the bit transmission rate to a video encoder that is part of an application layer of a network communication protocol for the wireless network.
摘要:
A method for controlling congestion for real-time video transmission in a wireless network includes receiving a packet loss rate of a video camera in a wireless network, receiving an estimated maximum throughput of the video camera from the camera to a server, decrementing a bit transmission rate when the packet loss rate is greater than a first predetermined threshold, incrementing the bit transmission rate when the packet loss rate is less than a second predetermined threshold for a predetermined time period, and transmitting the bit transmission rate to a video encoder that is part of an application layer of a network communication protocol for the wireless network.
摘要:
A removable cover system for protecting solar cells from exposure to moisture during fabrication processes. The cover system includes a cover having a configuration that complements the configuration of a solar cell substrate to be processed in an apparatus where moisture is present. A resiliently deformable seal member attached to the cover is positionable with the cover to engage and seal the top surface of the substrate. In one embodiment, the cover is dimensioned and arranged so that the seal member engages the peripheral angled edges and corners of the substrate for preventing the ingress of moisture beneath the cover. An apparatus for fabricating a solar cell using the cover and associated method are also disclosed.
摘要:
A microstructure diffuser includes a light-entering surface, a light-emitting surface, and a plurality of microstructure portions having a first microstructure unit and a second microstructure unit. The first microstructure unit includes a first side surface, a second side surface, a top surface, a first pitch (P1), a second pitch (P2), and a height (H). The second microstructure unit has a curve function shape and is located at the light-emitting surface. The first side surface and the second side surface of the first microstructure unit receive the light beam of the light source to form a first optical path. The top surface of the first microstructure unit receives the light beam of the light source to form a second optical path. The second microstructure unit receives the light beam of the light source to form a third optical path.
摘要:
An insert ring for a wafer support inside a processing chamber for the processing, particularly dry etching, of semiconductor wafer substrates. The insert ring has a generally step-shaped cross-sectional configuration which defines a perpendicular gap or flow space between the insert ring and the wafer support. In the etching of substrates on the wafer support, the perpendicular gap or flow space defines a perpendicular flow path for plasma species. Consequently, flow of heavy plasma species against the outer wall of the wafer support is substantially hindered or reduced to reduce accumulation of polymer material on the inner surface of the insert ring and/or the outer wall of the wafer support.
摘要:
An inner ring signal and an outer ring signal according to specific patterns formed on the label side of the optical disc are generated. Timing starts when the outer ring signal reveals the end of a positioning pattern and stops to obtain a timing value when the inner ring signal reveals the start of a square wave defining a specified spoke. A starting spoke is defined according to the inner ring signal and the specified spoke. A deviation bit value is calculated according to the timing value and a bit number of a data to be marked on a certain track of the optical disc. The data is rotated according to the deviation bit value, and then marked on the certain track, starting with the starting spoke.