Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.

Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.

Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.

Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.

Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.

Abstract: A method includes receiving a wireless communication signal indicating that a receiver is within a wireless-power-transmission range of a transmitter. In response to the receiving, the method further includes transmitting a plurality of radio frequency (RF) test signals using at least two test phases for a respective antenna. The method further includes receiving information identifying a first amount of power delivered to the receiver by a first RF test signal transmitted at a first of the at least two test phases, receiving information identifying a second amount of power delivered to the receiver by a second RF test signal transmitted at a second of the at least two test phases, and determining, based on the first and second amounts of power, an optimal phase for the respective antenna.

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: 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.

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.

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.

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: 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.

Abstract: Methods, systems, and devices are described for optimizing handover or cell reselection of a mobile device based on historical information associated with mobility patterns of the mobile device. The mobile device may autonomously determine when a resource for the mobile device may be released based on the historical information. The mobile device may transmit a message to a serving cell indicating when the resource may be released and perform a handover or cell reselection procedure of the mobile device to the target cell. The serving cell may release the resource based on the indication received in the message.

Abstract: RFID tags are commanded to generate a pilot tone in their backscatter. When the backscattered pilot tone is received in the reader, the pilot tone is used to estimate the tag period/frequency. Then, the estimate is used to seed and lock a symbol timing recovery loop, which provides a detected signal to one or more correlators for detecting the tag preamble. A delayed version of the received tag signal is compared against a baseline signal threshold established from the received signal to detect the pilot tone.

Abstract: RFID tags are commanded to generate a pilot tone in their backscatter. When the backscattered pilot tone is received in the reader, the pilot tone is used to estimate the tag period/frequency. Then, the estimate is used to seed and lock a symbol timing recovery loop, which provides a detected signal to one or more correlators for detecting the tag preamble. A delayed version of the received tag signal is compared against a baseline signal threshold established from the received signal to detect the pilot tone.

Abstract: RFID tags, tag circuits, and methods adapting the reception bandwidth. A tag has a decoder for decoding a first received wireless signal subject to a reception bandwidth setting. The tag also has a selector switch for transitioning to a different setting, such as by switching to using a different filter. A subsequently received second signal is decoded subject to the new reception bandwidth setting.

Abstract: RFID tags, tag circuits, and methods adapting the reception bandwidth. A tag has a decoder for decoding a first received wireless signal subject to a reception bandwidth setting. The tag also has a selector switch for transitioning to a different setting, such as by switching to using a different filter. A subsequently received second signal is decoded subject to the new reception bandwidth setting.