| Patent application number | Description | Published |
|---|
| 20080225825 | H-ARQ THROUGHPUT OPTIMIZATION BY PRIORITIZED DECODING - Systems and methodologies are described that facilitate data throughput optimization in a receiver through prioritized decoding of data transmissions. In particular, mechanisms are provided that assign priorities to obtained packets and/or sub-packets of a data transmission. The priorities can be assigned based at least upon prioritization rules that identify packets and/or sub-packets most likely to successfully decode. The obtained packets and/or sub-packets are decoded based upon the assigned priorities. | 09-18-2008 |
| 20080232282 | SMART ACCUMULATOR FOR FINITE-PRECISION ARITHMETIC - Systems, methods, and devices that facilitate finite-precision data accumulation by utilizing precision binning and queuing are provided. A precision range of a data element received into a queue can be determined. Further, a stored data element of like precision can be selected. The stored data element can be added with the data element received into the queue to generate a resultant data element. The resultant data element can be stored in a memory location or the queue as a function of like precision range. | 09-25-2008 |
| 20080232400 | DYNAMIC MANAGEMENT OF RECEIVER RESOURCES - Techniques for dynamically managing receiver resources to achieve good latency and throughput performance are described. A receiver may have various types of receiver resources such as demod resources for demodulating packets, decode resources for decoding packets, packet processing resources, etc. These various types of receiver resources may be dynamically assigned to packets. In one design, receiver resource usage by each packet to be processed by the receiver may be estimated. The available receiver resources may be assigned to packets based on the estimated receiver resource usage by each packet and one or more assignment criteria such as priority, latency requirements, etc. The latency of each packet may be determined based on the receiver resource assignment. If the latency requirements of any packet are not met, then receiver processing may be skipped or deferred for one or more packets such that the latency requirements of each packet to be processed can be met. | 09-25-2008 |
| 20080232403 | H-ARQ ACKNOWLEDGMENT DETECTION VALIDATION BY RE-DECODING - Systems and methodologies are described that facilitate reliably receiving a sequence of data packets in a wireless communications environment. In particular, mechanisms are provided that enhance hybrid automatic repeat request protocols through validation of acknowledgment message detection by re-decoding. A transmitter sends a data packet from a sequence of packets in one or more data transmissions. A receiver acknowledges the data packet upon obtaining sufficient transmissions to decode the packet. The receiver re-decodes a successive data transmission in combination with previously received transmissions to validate if the transmitter detected the acknowledgment. | 09-25-2008 |
| 20080235552 | PACKET-ASYNCHRONOUS HYBRID-ARQ - Aspects described a low receiver complexity approach for reliable packet decoding when Hybrid ARQ protocol is employed with persistent assignment and potentially an erasure sequence transmission. Multiple hypotheses packet decoding performance is achieved while mitigating multiple hypotheses receiver complexity. A reference number is utilized to perform hypotheses. The reference number is independent of a start of packet. A sequence of reference numbers can be utilized, which may not necessarily be sequential numbers. The reference numbers are pre-defined. | 09-25-2008 |
| 20090161606 | METHOD AND APPARATUS FOR IMPROVING PERFORMANCE OF ERASURE SEQUENCE DETECTION - Attributes of access terminals are employed in determining durations for erasure sequences. Transmissions from access terminals are analyzed to determine different attributes are based at least ont these attributes traffic models are estimated. Those terminals whose traffic models tend towards more frequent occurrences of longer erasures are assigned longer erasure durations to improve performance in erasure sequence detection. | 06-25-2009 |
| 20090207818 | PACKET DECODING FOR H-ARQ TRANSMISSION - Techniques for efficiently decoding packets sent with H-ARQ are described. Packet decoding for H-ARQ may be performed based on local search around a start of packet (SOP) decision for a packet. The SOP decision for the packet may be made based on traffic detection results for received transmissions. At least one SOP hypothesis may be determined for the packet based on the SOP decision, and the received transmissions may be decoded based on the at least one SOP hypothesis. A sliding SOP window may be used to keep track of SOP hypotheses for the packet. The sliding window may be initialized at an earliest received transmission, moved forward for each subsequent received transmission with no detected packet data, and maintained at the first received transmission with detected traffic. Rotating buffers may be used to store received transmissions for packets for decoding. | 08-20-2009 |
| 20090310505 | APPARATUS AND METHOD FOR MULTI-SECTOR VELOCITY MOBILE VELOCITY AND DOPPLER ESTIMATE FOR SYNCHRONOUS COMMUNICATION SYSTEMS - An apparatus and method for estimating velocity and Doppler frequency comprising acquiring a first plurality of time-of-arrival (TOA) measurements from a first plurality of base stations at a first time; acquiring a second and a third plurality of TOA measurements from a second and third plurality of base stations at a second time and a third time; determining a plurality of line-of-sight distance measurements using the first, second and third pluralities of TOA measurements; determining a plurality of velocity estimates and a plurality of angle of arrival (AOA) estimates, using the plurality of LOS distance measurements; determining a plurality of Doppler frequency estimates using the plurality of velocity estimates and the plurality of AOA estimates; and using a processor for determining an average Doppler frequency estimate over a plurality of sectors, wherein the first, second and third pluralities of TOA measurements are acquired over the plurality of sectors. | 12-17-2009 |
| 20090310536 | APPARATUS AND METHOD FOR CHANNEL ERROR CONTROL OF NON-EXCLUSIVE MULTIPLEXING FOR CONTROL CHANNELS - An apparatus and method for non-exclusive multiplexing of at least one active control channel comprising preparing the at least one active control channel for transmission in a next frame using a transmitter data processor; assessing channel robustness of the at least one active control channel based on a channel robustness threshold; and if the channel robustness threshold is not met, performing constellation control or power control on the at least one active control channel which is active prior to transmitting the at least one active control channel; or if the channel robustness threshold is met, transmitting the at least one active control channel using a transmitter. | 12-17-2009 |
| 20100118970 | TEMPORAL ERROR CONCEALMENT FOR VIDEO COMMUNICATIONS - Methods and systems for processing video data are described. A set of candidate motion vectors is selected from motion vectors associated with macroblocks in a first frame of video data and from motion vectors associated with macroblocks in a second frame of the video data. A statistical measure of the set is determined. The statistical measure defines a motion vector for a macroblock of interest in the second frame. | 05-13-2010 |
| 20100174421 | USER INTERFACE FOR MOBILE DEVICES - A mobile user interface suitable for mobile computing devices uses device position/orientation in real space to select a portion of content that is displayed. Content (e.g., documents, files or a desktop) is presumed fixed in virtual space with the mobile user interface displaying a portion of the content as if viewed through a camera or magnifying glass. Data from motion, distance or position sensors are used to determine the relative position/orientation of the device with respect to the content to select the portion for display. Content elements can be selected by centering the display on the desired portion, obviating the need for cursors and pointing devices (e.g., mouse or touchscreen). Magnification can be manipulated by moving the device away from or towards the user. 3-D content viewing may be enabled by sensing the device orientation and displaying content that is above or below the display in 3-D virtual space. | 07-08-2010 |
| 20100267346 | METHODS AND APPARATUS FOR CONTROL SIGNALING IN A COMMUNICATION SYSTEM - Methods and apparatus for control signaling in a communication system using continuous valued measurement and feedback are disclosed. The control signaling utilizes delta-sigma modulation where a measured phase or amplitude of a received signal is used to determine a difference signal by subtracting a previously quantized integrated difference signal from the current measurement signal, and then integrating the difference signal. The integrated difference signal is quantized and transmitted to the device originating the received signal as feedback control signaling. The device originating the received signal may then filter the control signaling to obtain the desired control information used to adjust or control the transmission of the signal transmitted by the device. By utilizing delta-sigma modulation, a greater degree of control signaling precision is achieved when controlling variables such as phase or amplitude of the transmitted signals, thereby achieving improved communication system performance. | 10-21-2010 |
| 20100284460 | VIDEO ENCODING WITH TEMPORALLY CONSTRAINED SPATIAL DEPENDENCY FOR LOCALIZED DECODING - This disclosure describes techniques for region-of-interest (ROI) encoding. In accordance with the techniques described herein, an encoding device may determine a temporal spatial dependency value for a candidate reference video block for inter-coding a current block in a video frame. The encoding device may compare the temporal spatial dependency value to a threshold value and select a coding mode for the current block based on the comparison. A decoding device may receive data defining a ROI as well as the temporal spatial dependency value and decode a video block in the ROI based at least in part on the temporal spatial dependency value. In this manner, the techniques of this disclosure may allow a video content viewer the ability to choose a ROI to watch. | 11-11-2010 |
| 20100284471 | VIDEO DECODING USING TEMPORALLY CONSTRAINED SPATIAL DEPENDENCY - This disclosure describes techniques for region-of-interest (ROI) encoding. In accordance with the techniques described herein, an encoding device may determine a temporal spatial dependency value for a candidate reference video block for inter-coding a current block in a video frame. The encoding device may compare the temporal spatial dependency value to a threshold value and select a coding mode for the current block based on the comparison. A decoding device may receive data defining a ROI as well as the temporal spatial dependency value and decode a video block in the ROI based at least in part on the temporal spatial dependency value. In this manner, the techniques of this disclosure may allow a video content viewer the ability to choose a ROI to watch. | 11-11-2010 |
| 20110085537 | EFFICIENT SIGNALING FOR CLOSED-LOOP TRANSMIT DIVERSITY - Techniques for encoding a phase adjustment for a feedback signal in a closed-loop transmit diversity system. In an aspect, codewords for the phase adjustments are chosen according to a variable-length prefix code. The prefix code aspect allows the codewords to be transmitted in sequence on the feedback channel without being separated by “commas” or demarcation symbols. The variable-length aspect provides a variety of coarse and fine phase adjustment quantization step sizes to accommodate multiple different channel scenarios. In an aspect, the length of the codewords may be further optimized according to the Huffman encoding algorithm. | 04-14-2011 |
