Abstract: Aspects of the present disclosure implement techniques of a new 3D waveform coding scheme that leverages the spatial properties of 5G NR systems. Specifically, in 5G systems, each UE location may be characterized by three parameters: propagation delay (tp), angle of elevation (?), and angle of azimuth (?). Global coding matrix may be generated by linear combination of these three attributes and a unique lattice code may be generated for each UE at different locations from the base station. Thus, considering the coding gain increases with increasing the distance between the codes, aspects of the present disclosure take advantage of geometrical properties of lattice. Particularly, within the 3D waveform coding, if lattice distance between co-beamed UEs is determined to be greater than threshold radius, a conjugate lattice code for the UEs may be applied in accordance with aspects of the present disclosure.

Abstract: Methods, systems, and devices for wireless communications are described in which a UE receives configuration information indicative of a base station virtual boundary geometry, decodes a plurality of virtual boundary marking code blocks associated with the configuration information, said decoding based on UE eigenvector information, and determines to establish communications with the base station within the base station virtual boundary geometry. A base station determines configuration information indicative of a base station virtual boundary geometry, the configuration information associated with accumulated measured and reported key performance parameters of a plurality of user equipment, transmits the configuration information to at least one UE, wherein the configuration information comprises a plurality of virtual boundary marking code blocks and attempts to establish communications with the at least one user equipment.

Abstract: Aspects of the present disclosure implement techniques of a new 3D waveform coding scheme that leverages the spatial properties of 5G NR systems. Specifically, in 5G systems, each UE location may be characterized by three parameters: propagation delay (tp), angle of elevation (?), and angle of azimuth (?). Global coding matrix may be generated by linear combination of these three attributes and a unique lattice code may be generated for each UE at different locations from the base station. Thus, considering the coding gain increases with increasing the distance between the codes, aspects of the present disclosure take advantage of geometrical properties of lattice. Particularly, within the 3D waveform coding, if lattice distance between co-beamed UEs is determined to be greater than threshold radius, a conjugate lattice code for the UEs may be applied in accordance with aspects of the present disclosure.

Abstract: Methods, systems, and devices for wireless communications are described in which a UE receives configuration information indicative of a base station virtual boundary geometry, decodes a plurality of virtual boundary marking code blocks associated with the configuration information, said decoding based on UE eigenvector information, and determines to establish communications with the base station within the base station virtual boundary geometry. A base station determines configuration information indicative of a base station virtual boundary geometry, the configuration information associated with accumulated measured and reported key performance parameters of a plurality of user equipment, transmits the configuration information to at least one UE, wherein the configuration information comprises a plurality of virtual boundary marking code blocks and attempts to establish communications with the at least one user equipment.

Abstract: Various embodiments include methods of offloading user equipment communication traffic between communications drones. The methods may include receiving, at a candidate communication drone, a replacement request from a requesting communication drone. Radio frequency (RF) communication parameters may be set for the candidate communication drone to take over communications of the requesting communication drone. The RF communication parameters may be determined based on the replacement request and may distinguish the candidate communication drone from the requesting communication drone and at least one neighboring communication drone. The candidate communication drone may move toward a target position adjacent a position of the requesting communication drone without radiating RF communications for taking over communications of the requesting communication drone.

Abstract: A method for reducing call failure rates on a multi-subscriber identity module (SIM) mobile communication device includes: selecting a first SIM camped on a visiting public land mobile network (VPLMN); attempting call initiation on the first SIM; determining whether call setup on the first SIM on the VPLMN is successful; in response to determining that the call setup on the first SIM is unsuccessful, determining if a second SIM is camped on a home public land mobile network (HPLMN); and in response to determining that the second SIM is camped on the HPLMN, selecting the second SIM camped on the HPLMN; and attempting call initiation using the second SIM.

Abstract: Embodiments include systems and methods for managing a tune-away from a first subscription to a second subscription in a multi-subscription multi-standby communication device during an ongoing voice communication session on the first subscription. A device processor may perform a tune-away from the first subscription to the second subscription. The device processor may determine whether a data transmission over the first subscription was missed during the tune-away. The device processor may calculate a data loss rate in response to determining that a data transmission of the first subscription was missed during the tune-away. The device processor may determine whether the data loss rate is greater than a data loss threshold, and the device processor may block a next tune-away in response to determining that the data loss rate is greater than the data loss threshold. In some embodiments, the first subscription may send a request to create a tune-away gap.

Abstract: Embodiments include systems and methods for managing a tune-away from a first subscription to a second subscription in a multi-subscription multi-standby communication device during an ongoing voice communication session on the first subscription. A device processor may perform a tune-away from the first subscription to the second subscription. The device processor may determine whether a data transmission over the first subscription was missed during the tune-away. The device processor may calculate a data loss rate in response to determining that a data transmission of the first subscription was missed during the tune-away. The device processor may determine whether the data loss rate is greater than a data loss threshold, and the device processor may block a next tune-away in response to determining that the data loss rate is greater than the data loss threshold. In some embodiments, the first subscription may send a request to create a tune-away gap.

Abstract: A method for reducing call failure rates on a multi-subscriber identity module (SIM) mobile communication device includes: selecting a first SIM camped on a visiting public land mobile network (VPLMN); attempting call initiation on the first SIM; determining whether call setup on the first SIM on the VPLMN is successful; in response to determining that the call setup on the first SIM is unsuccessful, determining if a second SIM is camped on a home public land mobile network (HPLMN); and in response to determining that the second SIM is camped on the HPLMN, selecting the second SIM camped on the HPLMN; and attempting call initiation using the second SIM.

Abstract: The present disclosure includes systems and methods for acquiring service using multiple channels. In one embodiment, the present invention includes a method comprising successively configuring a first wireless communication channel and a second wireless communication channel of a single wireless apparatus to receive a plurality of signal frequencies of one or more radio communication protocols. The first wireless communication channel is configured to receive different signal frequencies of the plurality of signal frequencies than the second wireless communication channel. The first wireless communication channel and the second wireless communication channel process the plurality of signal frequencies in parallel to establish a service connection.

Abstract: A method for determining transmission power backoff includes: for each combination of a plurality of predetermined receive (RX) signal power levels and transmit (TX) signal power levels: setting the RX signal power level for a first radio access technology (RAT) to one of the predetermined power levels; setting the TX signal power level for a second RAT to one of the predetermined power levels; subtracting a predetermined TX power backoff amount from the predetermined TX signal power level and transmitting the TX signal; measuring the RX signal frame error rate (FER); and increasing the TX power backoff amount by a predetermined amount until the FER is not greater than a predetermined threshold value at the predetermined RX signal power level.

Abstract: A method for enabling emergency calls on a mobile communication device includes: searching for available communication channels in one or more supported frequency bands and shared communication channels in one or more unsupported frequency bands; storing information including channel frequency and channel criteria about one or more available shared communication channels detected in the one or more unsupported frequency bands; and camping on one of the one or more available shared communication channels in one of the one or more unsupported frequency bands if no available communication channels exist in the one or more supported frequency bands.

Abstract: Methods, systems, and devices are described for optimizing measurement scheduling for devices capable of operating according to several radio access technologies (RATs). Mobile devices, including devices with dual-SIM, dual-standby (DSDS) capability, may be equipped with multi-RAT modems, which, according to the techniques described herein, may be scheduled to conduct measurements to improve throughput to the device. Scheduled measurements for one RAT may be rescheduled to avoid time periods during which data communications for another RAT are scheduled. In some examples, measurements for one RAT are scheduled to avoid overlapping with scheduled communications for that RAT.

Abstract: The present disclosure includes systems and methods for acquiring service using multiple channels. In one embodiment, the present invention includes a method comprising successively configuring a first wireless communication channel and a second wireless communication channel of a single wireless apparatus to receive a plurality of signal frequencies of one or more radio communication protocols. The first wireless communication channel is configured to receive different signal frequencies of the plurality of signal frequencies than the second wireless communication channel. The first wireless communication channel and the second wireless communication channel process the plurality of signal frequencies in parallel to establish a service connection.