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7623552 |
System and method for time synchronizing nodes in an automotive network using input capture
A system and method for time synchronizing nodes in a switch fabric network of a vehicle. A synchronization request message is transmitted from a requesting node to a neighboring node. At the time...
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RE41000 |
Methods and arrangements in a radio communications system
Methods and an arrangement for synchronizing communication of framed data via asynchronous base stations (BS 1, BS 2 ) in a cellular communication system are presented. The synchronization methods...
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7620137 |
System and method for clock drift correction for broadcast audio/video streaming
A clock rate used in rendering broadcast streaming audio/video data is adjusted to converge on a clock rate associated with broadcasting the streaming data. The clock rate is adjusted by monitoring...
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7620072 |
Device for reproducing received data for radio data communication and a method of adjusting frequency therefor
A receiver arrangement including a received data reproducing device includes an RF (Radio Frequency) receiver configured to determine the signal strength of a received signal and feed it to a clock...
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7602815 |
Using network time protocol in voice over packet transmission
One or more methods and systems of effectively transmitting voice and voice band data from one node to another are presented. In one embodiment, the system comprises an NTP time server generating...
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7602764 |
Communication timing control method and apparatus, node, and communication system
A communication timing control apparatus for use in the nodes of a communication system includes a signal communication unit that transmits a state variable signal to neighboring nodes and receives...
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7600032 |
Temporal drift correction
Temporal drift correction may be provided in a real-time audio communication system by measuring a size of a receiving data buffer and comparing that size to a predetermined nominal data buffer...
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7599458 |
System and method to reduce jitter
One disclosed embodiment may comprise an interpolation system that includes an interpolator that interpolates between a selected phase from a preceding cycle and a selected phase from a current...
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7599400 |
Methods and systems for reducing waiting-time jitter
A method of minimizing jitter in a system for rate adapting a data signal for transport through a synchronous network. A phase difference is measured between a data clock synchronous with the data...
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7599399 |
Jitter buffer management
In an embodiment of the invention, a communication device comprises a jitter buffer configured to buffer communications, a processing system configured to determine a utilization metric based on a...
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7599309 |
Method and apparatus for managing cell-by-cell demodulation timings of a user equipment in an asynchronous mobile telecommunication system
A method and an apparatus are provided for managing cell-by-cell demodulation timing of an asynchronous user equipment (UE) for demodulating multipath signals, received from a plurality of cells,...
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7596488 |
System and method for real-time jitter control and packet-loss concealment in an audio signal
An “adaptive audio playback controller” operates by decoding and reading received packets of an audio signal into a signal buffer. Samples of the decoded audio signal are then played out of the...
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7596112 |
Method and apparatus for rate compatible dirty paper coding
A medium access control (MAC) entity first computes an achievable rate region based on a total transmit power limit and a channel gain of each of a plurality of WTRUs. Next, the MAC entity selects...
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7590152 |
Router-based monitoring of EF-on-EF jitter
A system for monitoring EF-on-EF jitter in a network node having an EP output queue into which EF packets are entered comprises a first counter that counts the packets entering the queue and also a...
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7590151 |
Method and apparatus for aligning time references when separated by an unreliable data packet network
A time control mechanism accepts samples of time (true or otherwise) over a network, and enables dynamic compensation for random delays of the network in order to maintain the output of a slave...
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7590061 |
Apparatus and method of controlled delay packet forwarding
An apparatus and method are described for forwarding of packets with controlled delay. In one embodiment, the invention includes controlled delay queuing logic to hold a packet in a first class for...
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7586955 |
Interface circuit and semiconductor device
A circuit that enables a loop-back test by adjusting phases of data and strobe signals at the input and output in an interface wherein the phase relationships between the data and the strobe signal...
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7586891 |
Communication network optimization tool
A method for converging on a route through a radio frequency (RF) communications network, that includes multiple nodes, includes (a) identifying all RF links between each node in the RF...
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7583707 |
System, method and apparatus for controlling a network post-demultiplexing function
A system, method and apparatus for controlling a network post-demultiplexing function such as dejittering is described. The method includes accessing data relating to a multiplexing function of...
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7583601 |
Multicast transfer route setting method, and multicast label switching method for implementing former method
A method of establishing a multicast transfer route is disclosed that can reduce the cost of entire route under a constraint on delay incurred between starting point and ending points. The method...
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7577221 |
Receiver scheme for synchronous digital transmission
A method, apparatus and system for improving the tolerance for timing jitter noise by eliminating the need to recover clock information from the input signal. There is no need to communicate clock...
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7577169 |
Time stamping
A method of time stamping by using a modified NTP at the data link/physical layers. The method includes steps of time stamping and recording arrival and transmit times at a lower data link level of...
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7573894 |
Method of dynamic adaptation for jitter buffering in packet networks
A method of controlling a buffer for reducing jitter in a packet network is provided, with a fast attack and a slow decay time to track delay changes in the network. The principal function of the...
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7570670 |
Method and system for communicating and processing VOIP packets using a jitter buffer
A method and system for communicating and processing VOIP packets using a jitter buffer. The method includes receiving VOIP packets from a plurality of base stations, buffering the received VOIP...
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7570669 |
Synchronizing packet traces
A system and method for determining a common time base among nodes in a network by iteratively propagating timing constraints among the nodes, and determining a time-shift to apply to the time base...
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7570660 |
Apparatus for implementing transparent subwavelength networks
A network element for incorporating in nodes of a network that is a transparent, subwavelength networks. The element is configurable and adapted to support an arbitrary protocol, with...
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7567640 |
Phase offset tracking method for tracking a phase offset and device thereof
The invention relates to a phase offset tracking module and method for tracking a phase offset, and in particular, to a phase offset tracking module and method for tracking a phase offset in a...
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7567589 |
Rate generator in a video on demand system having multiple constant bit rate data
A rate generator for generating a plurality of different frequencies that represent video requests in a video on demand (VOD) system. The rate generator comprises a plurality of parallel groups,...
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7564876 |
Method of resynchronizing streams benefiting from circuit emulation services, for use in a packet-switched communications network
A packet-switched communications network (PSN) includes a multiplicity of nodes (Ni) adapted to switch streams of packets benefiting from circuit emulation services, known as CES packets. The...
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7561602 |
Apparatus for processing packet, and medium storing packet processing program
Packets received through a network interface 104 is stored into a receiving buffer 108 . Are production controller 106 checks the current state of receiving buffer 108 and performs a...
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7561550 |
Method and apparatus for scheduling user equipment in a soft handover region for uplink packet transmission
A scheduling method and apparatus are provided for soft handover in a user equipment (UE) in in a mobile communication system supporting an enhanced uplink packet data service. A receiver receives...
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7558868 |
Information processing device and method, recording medium, and program
An information processing apparatus and method, a recording medium, and a program for removing jitter and reducing the delay of the information processing system. A substantial error is produced...
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7555018 |
Determining phase jitter and packet inter-arrival jitter between network end points
An arrangement is provided for measuring jitter between an initiating network end point and a receiving network end point. A plurality of source packets are sent from the initiating network end...
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7551646 |
Data alignment and deskewing module
A data alignment and deskewing module includes a delay calibration unit, a data alignment and deskew unit, and a delay unit. The delay calibration unit is operably coupled to generate a reference...
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7545833 |
RF door activation system
The present invention provides a radio frequency (“RF”) activation system with improved operating capability and ease of installation. Improved responsiveness is provided by the receiver which...
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7539167 |
Spread spectrum receiver and method for carrier frequency offset compensation in such a spread spectrum receiver
The invention relates to a spread spectrum receiver for receiving and decoding an input signal r(k) consisting of a sequence of chips and a method for carrier frequency offset compensation in such...
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7535933 |
Calibrated data communication system and method
A system includes a first integrated circuit device and a second integrated circuit device. The first device transmits a data sequence to the second integrated circuit device, and the second device...
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7529276 |
Combined jitter and multiplexing systems and methods
Described herein are systems and methods for processing and transmitting data included in packets with jitter. The systems and methods combine a jitter buffer and a buffer scanned by a look ahead...
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7526394 |
Quality assessment tool
Non-intrusive speech quality assessment method and apparatus for: storing a sequence of intercepted packets associated with a call, each packet containing speech data, and an indication of a...
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7526000 |
Jitter compensation method for systems having wall clocks
Jitter is compensated on data packets by clock time derived time stamping upon transmission of the data packets. This results in transmission time stamps. The jitter is compensated based on a...
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7525952 |
Method and apparatus for determining the source of user-perceived voice quality degradation in a network telephony environment
Techniques for finding the source of perceptual audio degradation in an IP telephony environment provide a hop-by-hop analysis of a network over which IP telephony is laid, and may be performed by...
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7525918 |
Using RTCP statistics for media system control
Methods for using communication network statistics in the operation of a real-time communication system are disclosed. Embodiments of the invention may provide improved playback of real-time media...
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7519086 |
Method and system to measure data packet jitter
A first data packet is sent through a system under measurement (SUM) from a sender side to a receiver side. A time distance d between the first data packet and a second data packet consecutive...
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7515671 |
Method for correcting jitter of transmission data
Data is transferred from a transmitter to a data buffer of a receiver according to the clock of the transmitter. When the amount of data in the data buffer exceeds an upper limit, the frequency of...
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7512077 |
Compensation for independent clocks in relayed communication over packet-based networks
Methods, apparatuses, and systems are presented for compensating for independent clocks in relayed modem communications involving receiving data packets from a first network device, forwarded over...
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7512069 |
IP packet identification method and system for TCP connection and UDP stream
A method of measuring jitter of a packet flow includes identifying the data packet flow at each of a first and second network locations by analyzing the data fields of each of the packets in the...
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7508845 |
Method of and apparatus for communicating isochronous data
In order to enable isochronous data to be transmitted over communications systems which may introduce timing jitter each packet of isochronous data is provided with a timestamp which indicates to a...
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7499472 |
Jitter buffer management
A sample jitter buffer manager more or less aggressively conserves (rations) or discards data in a jitter buffer, based on the fluctuating amount of data in the jitter buffer. The jitter buffer...
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7499446 |
Removing jitter in RTP streaming media streams
The present invention addresses the issue of jitter and clock drifting in streaming media applications. The present invention utilizes the Real Time Transaction Protocol (RTP) to embed MPEG packets...
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7489710 |
Stall need detection and associated stall mechanism for delay compensation in virtual concatenation applications
Virtual concatenation circuitry is disclosed which provides stall need detection and an associated stall mechanism in a network element of a data communication network. The virtual concatenation...
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