Qualcomm Incorporated

Bruce R Meagher

Roberto Padovani

Inyup Kang

Noam A Ziv

Tao Li

Jian Wei

Shimman Arvind Patel

Christopher Patrick

Joseph Cheung

Richard Higgins

Byron Yoshio Yafuso

Pillappakkam Bahukutumbi Srinivas

Julio Arceo

Srinivas Varadarajan

Gregory Foerster

Eric J Katzfey

Jalal Husseini

Brian Rodrigues

Beth Kuehn Monge

Friedrich G Knauss

Moto Oishi

A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a 'real-time' or 'off-line' mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.

Buffer-based GPS and CDMA pilot searcher

A system and method for assembling a single data stream from multiple instances of that data stream is described. Data transmitted from a cellular telephone subscriber unit is received by a set of base transceiver stations. Each base transceiver station performs various error detection procedures on segments of the data referred to as frames. These error detection procedures may include CRC check sum verification, Yamamoto metric calculation, re-encoded signal error rate calculation, or a combination thereof. The results of these error detection procedures are placed into a frame quality metric. The frame, frame quality metric, a time stamp and an address are placed into a packet that is transmitted from each base transceiver station to a base station controller which matches packets attempting to transmit the same information using the time stamp and selects one frame from the packets for further processing based on the associated frame quality metric.

Communication system using repeated data selection

Memory architectures and techniques that support direct memory swapping between NAND Flash and SRAM with error correction coding (ECC). In a specific design, a memory architecture includes a first storage unit (e.g., an SRAM) operative to provide storage of data, a second storage unit (e.g., a NAND Flash) operative to provide (mass) storage of data, an EMI unit implemented within an ASIC and operative to provide control signals for the storage units, and a data bus coupled to both storage units and the EMI unit. The two storage units are implemented external to the ASIC, and each storage unit is operable to store data from the other storage unit via the data bus when the other storage unit is being accessed by the EMI unit. The EMI unit may include an ECC unit operative to perform block coding of data transferred to/from the second storage unit.

Direct memory swapping between NAND flash and SRAM with error correction coding

A novel and improved system and method for assembling a single data stream from multiple instances of that data stream is described. Data transmitted from a cellular telephone subscriber unit is received by a set of base transceiver stations. Each base transceiver station performs various error detection procedures on segments of the data referred to as frames. These error detection procedures may include CRC check sum verification, Yamamoto metric calculation, re-encoded signal error rate calculation, or a combination thereof. The results of these error detection procedures are placed into a frame quality metric. The frame, frame quality metric, a time stamp and an address are placed into a packet that is transmitted from each base transceiver station to a base station controller which matches packets attempting to transmit the same information using the time stamp and selects one frame from the packets for further processing based on the associated frame quality metric.

A system for displaying performance characteristics of a circuit in a telecommunications network. The system is adapted for use with a CDMA telecommunications network and includes a Markov call testing system for performance testing the telecommunications circuit. A computer stores the results of the performance test. Software running on the computer determines a subset of the results sufficient to reflect the performance of the telecommunications circuit. A monitor on the computer displays information corresponding to the subset. In the illustrative embodiment, the system further includes a method for determining if one or more receive antennas in the telecommunications network are balanced. The telecommunications circuit corresponds to a cell site modem chip in a base station. The subset includes a number of finger signal peaks. The number is determined by calculations performed on a scan set to determine a floor above which signal peaks are chosen for inclusion in the subset. In the specific embodiment, the subset includes the eight highest signal peaks of a scan set. The scan set corresponds to a set of signal peaks as is provided by a temporal analyzer. In the illustrative embodiment, the display shows finger signal peak data resulting from Markov call testing of a cell site modem chip having one or more fingers. A first field in the display depicts a subset of signal peaks that includes n of the highest signal peaks. A second field illustrates an operational state for each of the fingers.

System and method for displaying performance characteristics of a cell

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San Diego, CA, United States of America

Bruce R Meagher