Abstract: Clock synchronization, including: receiving a first message at an uncorrected unit with a propagation delay time, wherein a transmission time of the first message is recorded by a corrected unit; recording an arrival time of the first message by the uncorrected unit; transmitting a second message from the uncorrected unit to the corrected unit after a pre-determined delay, receiving a third message at the uncorrected unit, wherein the third message includes a propagation delay time and the transmission time of the first message recorded by the corrected unit; calculating a clock offset between the corrected unit and the uncorrected unit using the propagation delay time and the transmission time of the first message recorded by the corrected unit; and applying the clock offset to synchronize a clock of the uncorrected unit to a clock of the corrected unit.

Abstract: Systems, methods, and computer readable media for communication in a network having a plurality of transceiver units are provided. The method can include transmitting by each transceiver unit (TU), a first broadcast message including a unique identifier of a respective TU and a network timing source identifier indicating the unique identifier of a TU upon which the respective TU relies for network time. The method can include receiving at the plurality of TUs, the first broadcast messages from one or more of the plurality of TUs. The method can include selecting, by each TU, a network timing source from among the plurality of TUs based on the unique identifiers and the network timing source identifiers. The network timing source can serve as the timing source for communications within the network.

Abstract: Methods, systems, and devices for wireless communication are provided for mobility management for wireless communications systems that utilize a flexible bandwidth carrier. Some embodiments include approaches for determining bandwidth information, such as one or more bandwidth scaling factors N and/or flexible bandwidths, at a user equipment (UE), where the bandwidth information may not be signaled to the UE. Embodiments for determining bandwidth information include: random ordered bandwidth scaling factor approaches, delay ordered bandwidth scaling factor approaches, storing bandwidth scaling factor value in UE Neighbor Record approaches, spectrum measurement approaches, spectrum calculation approaches, and/or a priori approaches. Flexible bandwidth carrier systems may utilize spectrum portions that may not be big enough to fit a normal waveform.

Abstract: Systems, methods, and computer readable media for communication in a network having a plurality of transceiver units are provided. The method can include transmitting by each transceiver unit (TU), a first broadcast message including a unique identifier of a respective TU and a network timing source identifier indicating the unique identifier of a TU upon which the respective TU relies for network time. The method can include receiving at the plurality of TUs, the first broadcast messages from one or more of the plurality of TUs. The method can include selecting, by each TU, a network timing source from among the plurality of TUs based on the unique identifiers and the network timing source identifiers. The network timing source can serve as the timing source for communications within the network.

Abstract: Methods, systems, and devices for wireless communication are provided for mobility management for wireless communications systems that utilize a flexible bandwidth carrier. Some embodiments include approaches for determining bandwidth information, such as one or more bandwidth scaling factors N and/or flexible bandwidths, at a user equipment (UE), where the bandwidth information may not be signaled to the UE. Embodiments for determining bandwidth information include: random ordered bandwidth scaling factor approaches, delay ordered bandwidth scaling factor approaches, storing bandwidth scaling factor value in UE Neighbor Record approaches, spectrum measurement approaches, spectrum calculation approaches, and/or a priori approaches. Flexible bandwidth carrier systems may utilize spectrum portions that may not be big enough to fit a normal waveform.

Abstract: Methods, systems, and devices for wireless communication are provided for mobility management for wireless communications systems that utilize a flexible bandwidth carrier. Some embodiments include approaches for determining bandwidth information, such as one or more bandwidth scaling factors N and/or flexible bandwidths, at a user equipment (UE), where the bandwidth information may not be signaled to the UE. Embodiments for determining bandwidth information include: random ordered bandwidth scaling factor approaches, delay ordered bandwidth scaling factor approaches, storing bandwidth scaling factor value in UE Neighbor Record approaches, spectrum measurement approaches, spectrum calculation approaches, and/or a priori approaches. Flexible bandwidth carrier systems may utilize spectrum portions that may not be big enough to fit a normal waveform.

Abstract: A system and method for data communication are presented. The method can include generating a set of precoding weights by autonomously selecting a precoding weight for each antenna at the first transceiver. The method can include transmitting a set of selected precoding weights in a request message. The method can include receiving an indication that the second transceiver unit will accept a transmission from the first transceiver unit. In response to the receiving, the method can include precoding data as precoded data using the set of precoding weights and transmitting the precoded data to the second transceiver unit using antennas of the one or more antennas corresponding to the set of precoding weights.

Abstract: A system and method for data communication are presented. The method can include generating a set of precoding weights by autonomously selecting a precoding weight for each antenna at the first transceiver. The method can include transmitting a set of selected precoding weights in a request message. The method can include receiving an indication that the second transceiver unit will accept a transmission from the first transceiver unit. In response to the receiving, the method can include precoding data as precoded data using the set of precoding weights and transmitting the precoded data to the second transceiver unit using antennas of the one or more antennas corresponding to the set of precoding weights.

Abstract: A detector in a mobile device receives input from a modem, determines whether the mobile device is indoor or outdoor based on the modem-supplied input, and stores in memory a binary value to indicate an indoor-outdoor state. In some embodiments, the detector extracts a feature from the modem-supplied input, and uses the extracted feature with a statistical classifier, to output an indoor-outdoor state and an associated probability of correctness of the indoor-outdoor state, in other embodiments, the detector determines whether the mobile device is indoor or outdoor based at least on the feature extracted to characterize temporal distribution of the wireless signal, by using a prior value of the state being indoor or outdoor.

Abstract: Methods, systems, and devices are described for adjusting at least one channel parameter based on accessed historical channel information associated with mobility patterns of a mobile device. In some examples, a mobile device or a base station may access historical channel information associated with mobility patterns of the mobile device or another mobile device. The mobility patterns may include information relative to a particular time and location of a mobile device, a previously traveled route by a mobile device, etc. Based on the historical channel information associated with the mobility patterns, the mobile device or the base station may adjust a channel parameter to improve communication performance across the particular channel.

Abstract: Exemplary embodiments are directed to wireless power. A wireless charging device may comprise a charging region configured for placement of one or more chargeable devices. The charging device may further include at least one transmit antenna configured for transmitting wireless power within the charging region. Furthermore, the charging device is configured to exchange data between at least one chargeable device of the one or more chargeable devices.

Abstract: Methods, systems, and devices are described for orthogonal modulation of signals using maximal length sequences and Hadamard transforms. Modulation symbols to be transmitted are arranged into sequences indexed from 1 to 2n?1 for some integer n. A constant is added to the beginning of each sequence, which is then multiplied by a Hadamard matrix of size 2n×2n. The resulting sequences will be orthogonal and will have a first value of zero. The first value is discarded, and the sequence are reordered and associated with m-sequences. The signal is then transmitted. A cyclic prefix may also be transmitted. Upon receiving the transmission, a receiver may discard the cyclic prefix or use it for channel equalization. The receiver may then reorder the received signal, insert a zero, apply the 2n×2n Hadamard transform, discard the zero, and order the sequences again according to the index to retrieve the data.

Abstract: A method and apparatus for reducing distortion of satellite signals modulated using amplitude phase shift keying (APSK) are disclosed. A receiver such as a user terminal receives, from a satellite, a signal including APSK-modulated symbols mapped to a constellation including a plurality of points arranged in an inner circle and in an outer circle; determines, based on the received APSK-modulated symbols, a ratio between a radius of the inner circle of the constellation and a radius of the outer circle of the constellation; generates a correction signal based, at least in part, on a comparison between the determined ratio and a reference ratio; compensates for distortion of the received signal based, at least in part, on the correction signal; mixes the correction signal with the received signal to generate a distortion-compensated signal; and de-modulates the distortion-compensated signal to recover data transmitted from the satellite.

Abstract: Methods, systems, and devices for wireless communication are provided for mobility management for wireless communications systems that utilize a flexible bandwidth carrier. Some embodiments include approaches for determining bandwidth information, such as one or more bandwidth scaling factors N and/or flexible bandwidths, at a user equipment (UE), where the bandwidth information may not be signaled to the UE. Embodiments for determining bandwidth information include: random ordered bandwidth scaling factor approaches, delay ordered bandwidth scaling factor approaches, storing bandwidth scaling factor value in UE Neighbor Record approaches, spectrum measurement approaches, spectrum calculation approaches, and/or a priori approaches. Flexible bandwidth carrier systems may utilize spectrum portions that may not be big enough to fit a normal waveform.

Abstract: A system and method for data communication are presented. The method can include generating a set of precoding weights by autonomously selecting a precoding weight for each antenna at the first transceiver. The method can include transmitting a set of selected precoding weights in a request message. The method can include receiving an indication that the second transceiver unit will accept a transmission from the first transceiver unit. In response to the receiving, the method can include precoding data as precoded data using the set of precoding weights and transmitting the precoded data to the second transceiver unit using antennas of the one or more antennas corresponding to the set of precoding weights.

Abstract: Methods, systems, and devices are provided that may enable wireless communications systems that utilize flexible bandwidths to transmit at the same or similar rates as wireless communications systems that utilize normal bandwidths. Some embodiments identify a target rate for a broadcast channel of a first bandwidth carrier system and transmit broadcast information utilizing the target rate. The target rate is higher than a scaled rate that results from scaling the rate for a broadcast channel of a second bandwidth carrier system by a bandwidth scaling factor. The first and second bandwidth carrier systems may be flexible and normal bandwidth carrier systems, respectively. To compensate for the bandwidth scaling and effectively maintain the rate at which information is transmitted in normal bandwidth carrier systems, different optimized schedules for system and master information transmission, different channelization codes and channels, and/or different scaled spreading factors may be identified and utilized.

Abstract: Methods, systems, and devices for mobility management for wireless communications systems that utilize a flexible bandwidth carrier are provided. Some embodiments include determining and transmitting assistance information to one or more user equipment (UEs) to facilitate mobility management with respect to the flexible bandwidth carrier. Some embodiments include signaling flexible bandwidth carrier information to UEs including, but not limited to: UE-centric approaches, network-centric approaches, network-centric approaches with PLMN, SIB creation approaches, and/or application layer approaches. A flexible bandwidth carrier may involve a wireless communications system that may utilize portions of spectrum that may not fit a normal bandwidth. A flexible bandwidth carrier may be generated with respect to a normal bandwidth carrier through dilating, or scaling down, the time or the chip rate of the flexible bandwidth carrier with respect to the normal bandwidth carrier.

Abstract: Methods, systems, and devices for wireless communication are provided for mobility management for wireless communications systems that utilize a flexible bandwidth carrier. Some embodiments include approaches for determining bandwidth information, such as one or more bandwidth scaling factors N and/or flexible bandwidths, at a user equipment (UE), where the bandwidth information may not be signaled to the UE. Embodiments for determining bandwidth information include: random ordered bandwidth scaling factor approaches, delay ordered bandwidth scaling factor approaches, storing bandwidth scaling factor value in UE Neighbor Record approaches, spectrum measurement approaches, spectrum calculation approaches, and/or a priori approaches. Flexible bandwidth carrier systems may utilize spectrum portions that may not be big enough to fit a normal waveform.

Abstract: A detector in a mobile device receives input from a modem, determines whether the mobile device is indoor or outdoor based on the modem-supplied input, and stores in memory a binary value to indicate an indoor-outdoor state of the mobile device. In certain embodiments, the mobile device includes a modem of a cell phone and the modem-supplied input includes an estimate of a power delay profile. In some embodiments, the detector extracts a feature from the modem-supplied input, and uses the extracted feature with a classifier, to output a state and a probability of the state. In these embodiments, logic in the detector compares an empirically-determined threshold, against a probability output by the classifier, and when the threshold is exceeded, the state determined by the classifier is output as the state of the mobile device. In other embodiments, the classifier outputs the state of the mobile device directly (without probability).

Abstract: Methods, systems, and devices are described for predicting a current random access transmission power detectable by a base station based on historical transmission power information. In one aspect, a mobile device may access a historical transmission power associated with a current state of the mobile device, with the historical transmission power based on mobility patterns of the mobile device. Based at least in part on the accessed historical transmission power, the mobile device may predict a current random access transmission power of the mobile device, where the predicted current random access transmission power is configured to elicit a random access response from a base station. In one aspect, the techniques described herein may reduce a number of power ramp steps taken by the mobile device during a random access procedure, reduce interference from the mobile device during the random access procedure, or both based on the predicted current random access transmission power.