| Patent application number | Description | Published |
|---|
| 20100080163 | APPARATUS AND METHODS OF PROVIDING AND RECEIVING VENUE LEVEL TRANSMISSIONS AND SERVICES - A venue-cast system and method for providing and receiving venue level transmissions and services, including discovery of a venue specific transmission by receiving an overhead signal from a non-venue network, extracting information for receiving the venue specific transmission from the overhead signal, and tuning to receive the venue specific transmission based on the extracted information. The venue level transmission may be provided and received in a manner that does not prevent an access terminal from receiving a local area or wide area transmission. | 04-01-2010 |
| 20100157833 | METHODS AND SYSTEMS FOR IMPROVED TIMING ACQUISITION FOR VARYING CHANNEL CONDITIONS - An improved receiver apparatus and acquisition algorithm using TDM pilots is disclosed. The timing acquisition method presented provides capabilities for adapting to changing channel conditions, in particular varying expected delay spreads. The information on an expected delay spread can be fed back to the initial acquisition algorithm based on previous successful attempts, and the delay spreads measured at that time, such as to set the length of the detection window used to in the TDM pilot processing. Based on the delay spread information, the algorithm for processing the specialized TDM pilot can adaptively modify the timing acquisition parameters for more robust performance under interference conditions. This may involve reducing the length of the detection window to just a little more than or equal to the maximum expected delay spread, which reduces sensitivity of the fine timing acquisition to signal noise. | 06-24-2010 |
| 20100158160 | EXTRACTING INFORMATION FROM POSITIONING PILOT CHANNEL SYMBOLS IN FORWARD LINK ONLY SYSTEM - Methods, systems, and apparatus, including computer programs encoded on computer readable storage media, for extracting transmitter identification information from the Positioning Pilot Channel (PPC) of a MediaFLO superframe. One of a wide area differentiator (WID) value and a local area differentiator (LID) value associated with the transmitter is determined based on signaling in a first interlace of a symbol received via the PPC. A time domain channel estimate is computed for the PPC based on signaling in a plurality of interlaces of the symbol and also based on the one of the WID and LID values. The time domain channel estimate is used to obtain a frequency domain channel estimate for a second interlace of the symbol that carries the transmitter identification information, and the frequency domain channel estimate is used to determine the transmitter identification information. | 06-24-2010 |
| 20100246564 | METHODS AND SYSTEMS FOR TIMING ACQUISITION ROBUST TO CHANNEL FADING - The embodiments provide mechanisms for synchronizing a receiver with OFDM pilots that are robust in the presence of channel fading conditions. In addition to using instantaneous channel estimate values to locate the first arriving path and last arriving path, the methods calculate time-domain averaged channel estimate values and use those averaged values to determine an average first arriving path and last arriving path. A combination of the instantaneous first arriving path and last arriving path and the average first arriving path and last arriving path may then be used to determine the delay spread and calculate a timing offset to be applied in timing synchronization. The various embodiments introduce improvements under channel fading conditions. Time-domain averaging may be embodied in a flexible DSP processor, or implemented in hardware and/or software. Using both instantaneous and time-averaged channel estimates greatly improves the robustness of time synchronization under channel fading conditions. | 09-30-2010 |
| 20110069657 | SYSTEM AND METHOD FOR THE SIMULTANEOUS TRANSMISSION AND RECEPTION OF FLO AND FLO-EV DATA OVER A MULTI-FREQUENCY NETWORK - A system for receiving data comprising a receiver configured to receive a radio frequency communication signal comprising at least one superframe, the at least one superframe having at least a first data stream encoded therein; and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe, where the at least first data stream and any other data streams may be carried on different radio frequency channels. | 03-24-2011 |
| 20110085499 | SYSTEM AND METHOD FOR THE SIMULTANEOUS TRANSMISSION AND RECEPTION OF FLO AND FIO-EV DATA - A system for transmitting a data stream, includes a transmitter for broadcasting a radio frequency communication signal comprising at least one superframe having at least a first data stream encoded therein, and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe. A system for receiving data includes a receiver configured to receive a radio frequency communication signal comprising at least one superframe having at least a first data stream encoded therein; and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe. | 04-14-2011 |
| 20110216678 | SYSTEM AND METHOD FOR THE SIMULTANEOUS RECEPTION OF FLO AND FLO-EV DATA - A system for receiving data includes a receiver configured to receive a radio frequency communication signal comprising at least one superframe, the at least one superframe having at least a first data stream and a second data stream encoded therein, wherein the receiver decodes at least one of the first data stream and the second data stream. | 09-08-2011 |
| 20110216745 | SYSTEM AND METHOD FOR SIGNALING OVERHEAD INFORMATION IN A NETWORK - A system for signaling overhead information in a network includes a receiver configured to receive a radio frequency communication signal comprising at least one superframe, the at least one superframe comprising overhead information that identifies a location of a first data stream carried in the at least one superframe, and a trailer associated with the first data stream, the trailer including at least a portion of the overhead information that identifies the location of the first data stream in a subsequent superframe without the receiver processing the overhead information in the subsequent superframe. | 09-08-2011 |
| 20120069934 | SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION IN A FLO-EV RECEIVER - A method for exiting receiver processing in a FLO-EV receiver comprises receiving a communication signal comprising at least one received symbol, deriving a channel performance metric based on the received symbol, determining whether the metric exceeds a threshold, and when the metric exceeds the threshold, providing a logic signal to signal receiver processing cessation. | 03-22-2012 |
| 20140223479 | APPARATUS AND METHODS OF PROVIDING AND RECEIVING VENUE LEVEL TRANSMISSIONS AND SERVICES - A venue-cast system and method for providing and receiving venue level transmissions and services, including discovery of a venue specific transmission by receiving an overhead signal from a non-venue network, extracting information for receiving the venue specific transmission from the overhead signal, and tuning to receive the venue specific transmission based on the extracted information. The venue level transmission may be provided and received in a manner that does not prevent an access terminal from receiving a local area or wide area transmission. | 08-07-2014 |
