Integrated Device Technology, Inc.

Brian Scott Darnell

Mohammad Shahanshah Akhter

Angus David Starr MacAdam

Jakob Saxtorph

Robert H Bishop

Bertan Tezcan

Bachir Berkane

Steve Lamontagne

William Terry Beane

Justin Preyer

John Fowler

Mike Seufert

Angus David Starr Macadam

A method and apparatus for compressing data in a communication system by receiving uncompressed packet at a compressor of the communication system, segmenting the packet into a plurality of packet segments, estimating packet segment compression parameters for each of the plurality of packet segments and compressing the packet segments utilizing one or more of the estimated packet segment compression parameters that are estimated and adjusted based upon the signal characteristics of the uncompressed packet and a desired compression ratio.

Method and apparatus utilizing packet segment compression parameters for compression in a communication system

The method and apparatus of the present invention provides for the compression and decompression of data bursts wherein the propagation of synchronization errors is limited to a desired number of signal samples and the start of a burst boundary is identified. In accordance with the present invention, a method and apparatus are provided for compressing data in a communication system by receiving data bursts comprising a plurality of uncompressed data packets at a compressor of the communication system, generating a start of burst parameter and a packet size parameter for each of the uncompressed data packets and compressing the data packets. At the decompressor, the compressed data packets are received and when a synchronization error occurs, the packet size parameter is used to limit the propagation of the error to a desired number of samples and to restore the data burst utilizing the start of burst parameter.

Method and apparatus for controlling error and identifying bursts in a data compression system

A dynamic context resource module measures a compression performance level of a most recent compressed data packet of each of a plurality of compressed signal streams to generate a signal stream compression performance level for each signal stream. Dynamic compression performance indicators are calculated from the measured signal stream compression performance levels and are stored in a dynamic context resource table. A compression parameter estimation module reads the dynamic compression performance indicators and determines if each signal stream exhibits a desired performance level. If a signal stream does not exhibit the desired performance level, the compression parameters for the signal stream are adjusted. A compressed packet generator compresses a next data packet of the signal stream based upon the adjusted compression parameters for the signal stream or the unadjusted compression parameters for the signal stream.

Method and apparatus for context based data compression in a communication system

The method and apparatus of the present invention provides for reduced power consumption and cost while supporting wide bandwidth signals from a large number of antennas, as is required by next generation systems. In accordance with the present invention, a method and apparatus are provided for processing data in a baseband unit in which compressed signals from remote radio units are sent directly to the switch instead of to a separate conversion device. Thereby, the local input and output bottleneck within processing devices is removed in the data path of the signals between the remote radio units and the baseband unit. This also reduces the number of ports in the switch and bandwidth requirement for the switch.

Method and apparatus for efficient baseband unit processing in a communication system

The method and apparatus of the present invention provides for reduced power consumption and cost while supporting wide bandwidth signals from a large number of antennas, as is required by next generation systems. In accordance with the present invention, a method and apparatus are provided for processing data in a radio unit of a communication system by receiving compressed data at one or more interfaces or internal resources of a distributed switch of a radio unit, operating the distributed switch to match the interface bandwidth to the resource bandwidth and distributing the compressed data received at the one or more interfaces or internal resources to the one or more internal resources or interfaces of the radio unit through the distributed switch.

Method and apparatus for efficient radio unit processing in a communication system

A method and apparatus that compresses signal data to generate compressed signal data having a low latency jitter while maintaining an acceptable compression ratio and reasonable degradation, as is required by next generation systems. A method and apparatus for compressing data in a communication system by receiving uncompressed data at a compressor of the communication system, analyzing the uncompressed data at the compressor to estimate at least one compression parameter to be applied during the compression of the uncompressed data, compressing the uncompressed data utilizing the at least one estimated compression parameter, monitoring the performance level of the compressed data packet and adjusting the estimated compression parameter used to compress the uncompressed data if the compressed data packet does not exhibit a desired performance level.

Method and apparatus for efficient data compression in a communication system

The method and apparatus of the present invention provides for the compression of signal data having a low latency jitter while maintaining a target compression ratio and reasonable degradation, as is required by next generation systems. In accordance with the present invention, a method and apparatus are provided for compressing data in a communication system by receiving uncompressed packet at a compressor of the communication system, segmenting the packet into a plurality of packet segments, calculating signal sample bit-removal information for each of the plurality of packet segments and compressing the packet segments utilizing the signal sample bit-removal information that is calculated based upon the signal characteristics of the uncompressed packet and a desired target compression ratio.

Method and apparatus for providing near-zero jitter real-time compression in a communication system

A packet switch includes individual route tables for ports of the packet switch. Each route table is associated with a port and individually maps a destination identifier of a data packet received at the port to another port in the packet switch. In some embodiments, the packet switch routes a data packet to an intermediate device based on a destination identifier in the data packet. The intermediate device services the data packet and sends the data packet, which includes the same destination identifier, back to the packet switch. In turn, the packet switch routes the data packet to a destination device based on the destination identifier in the data packet. The destination device terminates the data packet and may further service the data packet. In this way, the packet switch routes the data packet to both the intermediate device and the destination device based on the same destination identifier.

Packet switch with port route tables

A packet switch routes data packets based on both packet headers and data payloads in the data packets. The packet switch receives data packets, identifies a destination port of the packet switch for each data packet based on a packet header of the data packet, and routes the data packet to the destination port. Additionally, the packet switch selects data packets among the data packets received by the packet switch based on the data payloads of the received data packets, identifies a trace port of the packet switch for each selected data packet, and routes the selected data packet to the trace port.

Content driven packet switch

A packet switch including input ports and output ports allocates an output bandwidth of each output port among virtual channels based on bandwidth allocations values corresponding to the virtual channels and a bandwidth precision value of the output port. The bandwidth precision value indicates a number of bandwidth precision bits, which may be outside a bandwidth reservation precision range specified in a serial RapidIO standard. The packet switch receives data packets compliant with the serial RapidIO standard at the input ports, identifies an output port for each data packet, and selects input ports based on the output ports of the data packets. Further, the packet switch routes a data packet from each selected input port to the output port of the data packet, and the output port outputs the data packet by using the output bandwidth of the output port allocated to the virtual channel identified by the data packet.

Packet switch with configurable bandwidth allocation precision

A content addressable memory (CAM) device includes a CAM array that has multiple entries therein that are arranged in groups by weight class. Each entry comprises data bits and independently searchable weight bits that identify the weight class of the entry.

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Suwanee, GA, United States of America

Brian Scott Darnell