Abstract: Various embodiments include methods for improving navigation by a processor of a robotic device. Such embodiments may include initiating a start of a predetermined time period associated with semantic information extraction, and determining whether an adverse event related to one or more sensors of the robotic device is detected. Such embodiments may also include identifying a current time slot of the predetermined time period, identifying a current estimated position and orientation of the robotic device, and recording updates to semantic information stored for the one or more sensor based on the identified current time slot and the current estimated position and orientation of the robotic device in response to determining that an adverse event related to one or more sensors of the robotic device is detected.

Abstract: A memory system, comprising: a first plurality of memory ranks each having multiple memory cells; a second plurality of local controllers each coupled between one or more of the first plurality of memory ranks and a memory controller, the memory controller being configured to provide to a target local controller of the second plurality of local controllers, out of a first plurality of chip select (CS) signals, a target access CS signal enabling target access to a target memory rank of the first plurality of memory ranks coupled to the target local controller, and provide to the second plurality of local controllers, later than the target access CS signal, a command and address (CA) signal for addressing and accessing the multiple memory cells of the target memory rank; and wherein the target local controller is configured to generate, in response to receiving the target access CS signal, a target CA on-die termination (ODT) instruction switching on target CA ODT at its CA input at least for a period when the

Abstract: A memory system, comprising: a first plurality of memory ranks each having multiple memory cells; a second plurality of local controllers each coupled between one or more of the first plurality of memory ranks and a memory controller, the memory controller being configured to provide to a target local controller of the second plurality of local controllers, out of a first plurality of chip select (CS) signals, a target access CS signal enabling target access to a target memory rank of the first plurality of memory ranks coupled to the target local controller, and provide to the second plurality of local controllers, later than the target access CS signal, a command and address (CA) signal for addressing and accessing the multiple memory cells of the target memory rank; and wherein the target local controller is configured to generate, in response to receiving the target access CS signal, a target CA on-die termination (ODT) instruction switching on target CA ODT at its CA input at least for a period when the

Abstract: A memory system, comprising: a first plurality of memory ranks each having multiple memory cells; a second plurality of local controllers each coupled between one or more of the first plurality of memory ranks and a memory controller, the memory controller being configured to provide to a non-target local controller of the second plurality of local controllers, out of a first plurality of chip select (CS) signals, one or more non-target access CS signals disabling target access to one or more non-target memory ranks of the first plurality of memory ranks coupled to the non-target local controller; and the memory controller being further configured to provide to a target local controller of the second plurality of local controllers, out of the first plurality of CS signals, a target access CS signal enabling target access to a target memory rank of the first plurality of memory ranks coupled to the target local controller, and provide to the second plurality of local controllers a command and address (CA) sign

Abstract: Systems and techniques are presented for detecting touch inputs on a touch screen with improved accuracy. Raw sensor readings are received from a plurality of proximity sensors that detect an external object to the touch screen. An equalization is applied to the raw sensor readings. The equalization takes into account an equalization profile indicative of one or more responses from one or more proximity sensors to a reference object positioned in known proximity to the touch screen. Equalized sensor readings are generated based on applying the equalization to the raw sensor readings and positional data is generated based on the equalized sensor readings.

Abstract: A base station receiver, a computer program product operable at a base station, and a method operable at a base station receiver, for receiving uplink transmit diversity transmissions utilizing a master/slave scheme at the receiver. One or more tracking loops, such as a searcher task, a time tracking loop, or a frequency tracking loop may be implemented at the base station receiver to determine compensation values, such as finger timings for a rake receiver or frequency compensation values, in accordance with characteristics of a first received pilot channel transmitted utilizing a first precoding weight vector. Here, corresponding compensation values may be derived for the reception of a secondary pilot channel transmitted utilizing an precoding weight vector orthogonal to the first precoding weight vector, simply based on those determined for the first pilot channel.

Abstract: An apparatus, method, and computer program product operable to determine a phase of a beamforming weight vector utilizing a memory of a previously used phase for the beamforming weight vector, capable of improving a channel estimate. A base station transmits a beamforming weight vector to a user equipment based on a determined channel estimate. The user equipment selects between the received beamforming weight vector, or a modified beamforming weight vector having its phase shifted by ?360°, in accordance with a suitable selection criteria. That is, the selection is made such that a difference between the phase of the selected beamforming vector and a phase of a prior beamforming vector is within a predetermined range.

Abstract: A method and apparatus for enabling uplink beamforming transmit diversity is provided. The method may include receiving, by a wireless communications device (WCD), a beamforming weight vector in response to transmission by the WCD of two or more pilot channels, applying the received beamforming weight vector to at least one of a first of the two or more pilot channels, one or more data channels, or one or more control channels, and transmitting, using two or more antennas, at least one of the one or more data channels or at least one of the one or more control channels, wherein the number of pilot channels is greater than or equal to the number of antennas.

Abstract: Apparatus and methods for communicating in a wireless network include receiving a weight vector in a slot for providing closed loop transmit diversity to signals in a next slot, holding the weight vector over a plurality of slots following a transmission burst, and applying the weight vector to signals in at least one slot of a subsequent transmission burst in discontinuous transmit. Additional apparatus and methods for communicating in a wireless network include determining a weight vector based on signals received from a device to provide closed loop transmit diversity feedback to the device, holding the weight vector over a plurality of slots following receiving a transmission burst, and applying the weight vector for signals received in at least one slot of a subsequent transmission burst from the device.

Abstract: A method for closed loop transmit diversity that includes receiving data from user equipment (UE) that was transmitted using multiple transmit antennas, selecting a new transmit antenna for the UE, determining a new cycle period for the UE, and sending a new transmit antenna index and a testing indication based on the new cycle period to the UE.

Abstract: A Registered DIMM (RDIMM) system with reduced electrical loading on the data bus for increases memory capacity and operation frequency. In one embodiment, the data bus is buffered on the DIMM. In another embodiment, the data bus is selectively coupled to a group of memory chips via switches.

Abstract: A method and apparatus for enabling uplink beamforming transmit diversity channel estimation is provided. The method may include receiving a primary pilot channel and a secondary pilot channel, deriving two or more composite channels from the received primary and secondary pilot channels, deriving two or more physical channels from the derived two or more composite channels, and synthesizing a composite channel estimate for a dominant virtual antenna from the two or more derived physical channels and a beamforming weight vector.

Abstract: Techniques for reporting acknowledgement (ACK) information and channel quality indication (CQI) information in a wireless communication system are described. A user equipment (UE) may be able to receive data from up to two cells with dual-cell operation. The UE may determine CQI information for a first cell, determine CQI information for a second cell, and send the CQI information for both cells on a feedback channel with a single channelization code. The UE may process a control channel from each cell and, if control information is received from the cell, may further process a data channel from the cell to receive data sent to the UE. The UE may determine ACK information for each cell based on processing results for the data and control channels from that cell. The UE may send the ACK information for both cells on the feedback channel with the single channelization code.

Abstract: Apparatus and methods for communicating in a wireless network include receiving a weight vector in a slot for providing closed loop transmit diversity to signals in a next slot, holding the weight vector over a plurality of slots following a transmission burst, and applying the weight vector to signals in at least one slot of a subsequent transmission burst in discontinuous transmit. Additional apparatus and methods for communicating in a wireless network include determining a weight vector based on signals received from a device to provide closed loop transmit diversity feedback to the device, holding the weight vector over a plurality of slots following receiving a transmission burst, and applying the weight vector for signals received in at least one slot of a subsequent transmission burst from the device.

Abstract: A base station receiver, a computer program product operable at a base station, and a method operable at a base station receiver, for receiving uplink transmit diversity transmissions utilizing a master/slave scheme at the receiver. One or more tracking loops, such as a searcher task, a time tracking loop, or a frequency tracking loop may be implemented at the base station receiver to determine compensation values, such as finger timings for a rake receiver or frequency compensation values, in accordance with characteristics of a first received pilot channel transmitted utilizing a first precoding weight vector. Here, corresponding compensation values may be derived for the reception of a secondary pilot channel transmitted utilizing an precoding weight vector orthogonal to the first precoding weight vector, simply based on those determined for the first pilot channel.

Abstract: An apparatus, method, and computer program product operable to determine a phase of a beamforming weight vector utilizing a memory of a previously used phase for the beamforming weight vector, capable of improving a channel estimate. A base station transmits a beamforming weight vector to a user equipment based on a determined channel estimate. The user equipment selects between the received beamforming weight vector, or a modified beamforming weight vector having its phase shifted by ?360°, in accordance with a suitable selection criteria. That is, the selection is made such that a difference between the phase of the selected beamforming vector and a phase of a prior beamforming vector is within a predetermined range.

Abstract: A method for closed loop transmit diversity is disclosed. Data from user equipment (UE) that was transmitted using multiple transmit antennas is received. A new transmit antenna is selected for the UE. A new cycle period for the UE is determined. A new transmit antenna index and a testing indication based on the new cycle period are sent to the UE.

Abstract: A method and apparatus for enabling uplink beamforming transmit diversity channel estimation is provided. The method may include receiving a primary pilot channel and a secondary pilot channel, deriving two or more composite channels from the received primary and secondary pilot channels, deriving two or more physical channels from the derived two or more composite channels, and synthesizing a composite channel estimate for a dominant virtual antenna from the two or more derived physical channels and a beamforming weight vector.

Abstract: A method and apparatus for enabling uplink beamforming transmit diversity is provided. The method may include receiving, by a wireless communications device (WCD), a beamforming weight vector in response to transmission by the WCD of two or more pilot channels, applying the received beamforming weight vector to at least one of a first of the two or more pilot channels, one or more data channels, or one or more control channels, and transmitting, using two or more antennas, at least one of the one or more data channels or at least one of the one or more control channels, wherein the number of pilot channels is greater than or equal to the number of antennas.

Abstract: 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.