Abstract: A modular LIDAR system comprising a seed laser configured to output a beam, a modular modulator coupled to receive the beam output the seed laser and modulate the beam to create a modulated beam, a modular amplifier coupled to receive the modulated beam from the modular modulator and generate an amplified beam, and a modular transceiver chip coupled to the modular modulator and the modular amplifier, the transceiver chip configured to emit the beam perpendicularly from a first surface of the transceiver chip through an optical window; and receive a reflected beam from a target through the optical window.

Abstract: Disclosed are techniques for handling collisions between multiple radio resource control (RRC) connection establishment procedures for multiple connection events, such as mobile terminating pages and tracking area updates.

Abstract: Consistent with the present disclosure, an output of a seed laser is split by a series of first coupler stages and each split portion is provided to a respective laser in an array of secondary lasers to realized injection locking of the laser array. Undesired light output from the secondary laser array back to the seed laser is monitored and the phase of such light is adjusted so that such light is subject to destructive interference and its power is minimized. Accordingly, light output from the secondary laser array back to the seed laser does not degrade the performance of the seed laser. On the other hand, light intended for output from the secondary laser array is combined through a second series of coupler stages and monitored at each stage. The phase of the output of each laser in the array is controlled to equal or be aligned with one another such that laser array outputs constructively interfere with one another. As a result, the combined output power is maximized.

Abstract: Various implementations described herein are directed to an implementation of a higher order multiplexer using lower order multiplexers. In an embodiment, the implementation requires a slight modification to the existing circuitry design of the lower multiplexers. A plurality of multiplexers may be coupled with each other such that a common input port and output port is formed. Using an enable signal, only one of the coupled multiplexers may be enabled at a time while the remaining multiplexers are switched off. Therefore, upon receiving a select signal indicating an address of a memory cell, the lower multiplexers coupled together function as a higher order multiplexer in selecting the appropriate column corresponding to the memory cell.

Abstract: Various implementations described herein are directed to an implementation of a higher order multiplexer using lower order multiplexers. In an embodiment, the implementation requires a slight modification to the existing circuitry design of the lower multiplexers. A plurality of multiplexers may be coupled with each other such that a common input port and output port is formed. Using an enable signal, only one of the coupled multiplexers may be enabled at a time while the remaining multiplexers are switched off. Therefore, upon receiving a select signal indicating an address of a memory cell, the lower multiplexers coupled together function as a higher order multiplexer in selecting the appropriate column corresponding to the memory cell.

Abstract: Disclosed are techniques for handling collisions between multiple radio resource control (RRC) connection establishment procedures for multiple connection events, such as mobile terminating pages and tracking area updates.

Abstract: A user equipment (UE) registers on a first Public Land Mobile Network (PLMN) and, while in an idle mode, receives a Multimedia Broadcast Multicast Services (MBMS) service. The UE determines whether to perform a periodic network reselection search for a higher priority PLMN while in the idle mode, wherein the UE determines whether to perform the periodic network reselection search based on reception of the MBMS service. The UE may postpone the periodic network reselection search for a period of time while the UE receives the MBMS service in the idle mode. The UE may postpone the periodic network reselection search for a period of time while the UE receives the MBMS service in the idle mode. The UE may interleave the periodic network reselection search with the reception of transmission bursts of the MBMS service, the search being performed on frequencies other than that of the MBMS transmission.

Abstract: A user equipment (UE) registers on a first Public Land Mobile Network (PLMN) and, while in an idle mode, receives a Multimedia Broadcast Multicast Services (MBMS) service. The UE determines whether to perform a periodic network reselection search for a higher priority PLMN while in the idle mode, wherein the UE determines whether to perform the periodic network reselection search based on reception of the MBMS service. The UE may postpone the periodic network reselection search for a period of time while the UE receives the MBMS service in the idle mode. The UE may postpone the periodic network reselection search for a period of time while the UE receives the MBMS service in the idle mode. The UE may interleave the periodic network reselection search with the reception of transmission bursts of the MBMS service, the search being performed on frequencies other than that of the MBMS transmission.

Abstract: A wireless communication device having a first SIM and a second SIM and a radio frequency (RF) resource including multiple receive chains and at least one transmit chain may detect, during a connection to a first network associated with the first SIM, a start of a communication activity associated with the second SIM that uses one or more transmit chains and one or more of the receive chains. The wireless communication device may determine whether a carrier frequency of a cell serving the network associated with the first SIM is within a downlink frequency range supported by an unused receive chain of the RF resource. If not, the wireless communication device may identify a neighbor cell of the first network with a carrier frequency within a downlink frequency range supported by an unused receive chain of the RF resource, and attempt to camp the first SIM on that neighbor cell.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine, when involved in a multimedia broadcast or multicast service, a set of parameters relating to the state of the wireless communication device. In some aspects, the wireless communication device may determine to decode a signal associated with the multimedia broadcast or multicast service during a measurement gap based at least in part on the set of parameters. In some aspects, the measurement gap may be a gap configured for performing an intra-radio access technology (IRAT) or inter-frequency cell measurement.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine, when involved in a multimedia broadcast or multicast service, a set of parameters relating to the state of the wireless communication device. In some aspects, the wireless communication device may determine to decode a signal associated with the multimedia broadcast or multicast service during a measurement gap based at least in part on the set of parameters. In some aspects, the measurement gap may be a gap configured for performing an intra-radio access technology (IRAT) or inter-frequency cell measurement.

Abstract: A wireless communication device having a first SIM and a second SIM and a radio frequency (RF) resource including multiple receive chains and at least one transmit chain may detect, during a connection to a first network associated with the first SIM, a start of a communication activity associated with the second SIM that uses one or more transmit chains and one or more of the receive chains. The wireless communication device may determine whether a carrier frequency of a cell serving the network associated with the first SIM is within a downlink frequency range supported by an unused receive chain of the RF resource. If not, the wireless communication device may identify a neighbor cell of the first network with a carrier frequency within a downlink frequency range supported by an unused receive chain of the RF resource, and attempt to camp the first SIM on that neighbor cell.

Abstract: Aspects of the disclosure generally relate to wireless communication. A first wireless communication device may transmit, to a second wireless communication device and a third wireless communication device, an indication that the first wireless communication device is in a ringing state based at least in part on a first call message associated with the second wireless communication device and a second call message received from the third wireless communication device. The second call message may be received while the first wireless communication device is in the ringing state due to the first call message. The first wireless communication device may selectively proceed based on at least one of the first call message or the second call message in response to user input that indicates whether to accept at least one of the first call message, the second call message, or both the first call message and the second call message.

Abstract: The disclosure generally relates to optimizing power consumption while one or more users are inactive during a video call. More particularly, according to various aspects, a current camera view may be captured at a first user equipment (UE) during a video call with at least a second UE. In response to the first UE determining that a user associated with the first UE is inactive on a camera at the first UE (e.g., when no faces are visible in the current camera view), the first UE may reduce uplink transmissions that are allocated to video content corresponding to the current camera view while the user associated with the first UE is inactive on the camera.

Abstract: A method for reacquiring a multimedia broadcast multicast service (MBMS) after loss of a connection that includes: utilizing a radio frequency (RF) chain of a mobile communication device to receive a MBMS service of interest on a first subscription; identifying a loss of a connection to the first subscription receiving the MBMS service of interest; retrieving, from a memory operably connected to the RF chain, a plurality of frequencies associated with the first subscription, the plurality of frequencies communicating the MBMS service of interest; and attempting reacquisition of the MBMS service of interest over the first subscription on one of the retrieved plurality of frequencies prior to attempting to establish a connection on other frequencies not associated with the MBMS service of interest.

Abstract: Network node and method therein for assignment of Physical Cell Identities (PCIs) to Radio Base Stations (RBSs) in a wireless communication network. The method includes determining a most densely located RBS, based on the distances from each RBS to a certain number of other RBSs of the plurality of RBSs. The method further includes, for each RBS, i, for which a PCI is to be assigned: assigning a Secondary Synchronization Signal (SSS) to the RBSi from a set of SSSs, based on a distance from the RBSi to another RBS in the communication network associated with the same SSS, and a number of tiers between the RBSi and, at least, the other RBS. Further, a Primary Synchronization Signal (PSS) is assigned to the RBSi, based on the number of cells associated with the RBSi; and a PCI is assigned to the RBSi, based on the SSS and the PSS.

Abstract: Network node and method therein for assignment of Physical Cell Identities (PCIs) to Radio Base Stations (RBSs) in a wireless communication network. The method includes determining a most densely located RBS, based on the distances from each RBS to a certain number of other RBSs of the plurality of RBSs. The method further includes, for each RBS, i, for which a PCI is to be assigned: assigning a Secondary Synchronization Signal (SSS) to the RBSi from a set of SSSs, based on a distance from the RBSi to another RBS in the communication network associated with the same SSS, and a number of tiers between the RBSi and, at least, the other RBS. Further, a Primary Synchronization Signal (PSS) is assigned to the RBSi, based on the number of cells associated with the RBSi; and a PCI is assigned to the RBSi, based on the SSS and the PSS.

Abstract: An all-optical linear feedback circuit for use, for example, as a maximal length pseudo random bit sequence generator includes an all-optical logic circuit that is capable of generating 2N?1 bit maximal length pseudo random bit sequences on an optical channel at high data rates e.g. 80 Gbit/s. In the pseudo random bit sequence generator of the present invention, intensity-dependent phase modulation of at least one included semiconductor optical amplifier (SOA) is implemented. The maximum data rate is limited by the fast gain recovery time of the carriers in the SOA. An optical logic gate of the pseudo random bit sequence generator of the present invention may be constructed using various nonlinear elements that provide ultra-fast intensity-dependent phase modulation.

Abstract: An all-optical linear feedback circuit for use, for example, as a maximal length pseudo random bit sequence generator includes an all-optical logic circuit that is capable of generating 2N?1 bit maximal length pseudo random bit sequences on an optical channel at high data rates e.g. 80 Gbit/s. In the pseudo random bit sequence generator of the present invention, intensity-dependent phase modulation of at least one included semiconductor optical amplifier (SOA) is implemented. The maximum data rate is limited by the fast gain recovery time of the carriers in the SOA. An optical logic gate of the pseudo random bit sequence generator of the present invention may be constructed using various nonlinear elements that provide ultra-fast intensity-dependent phase modulation.

Abstract: Logic operations are carried out among multiple optical signals based on their wavelength. The logic operations can be based on four wave mixing which produces an output based on polarizations of the inputs. The same circuit can be caused to carry out multiple truth tables. Applications are disclosed for adding, logical inversion, and error correction. The error correction can take the form of parity bit generation or correction of data bits.