Abstract: Certain aspects of the present disclosure relate to methods and apparatus for improving voice over new radio (VoNR)-to-voice over long term evolution (VoLTE). An example method generally includes communicating with and camping on a next generation node B (gNB) in a 5G new radio (NR) system; initiating a voice call with the gNB; receiving a 5G NR-to-long term evolution (LTE) handover command in response to initiating the voice call; performing a handover procedure in response to the handover command; detecting a failure in the handover procedure; and taking one or more actions in response to detecting the failure in the handover procedure.

Abstract: Aspects of the present disclosure provide methods and apparatuses that use various connection reconfiguration signaling schemes to enable fast user equipment reconfiguration in wireless networks. A network can reduce reconfiguration signaling traffic or overhead by reducing the amount of configuration data sent to each user equipment (UE) in a reconfiguration message. In some examples, when a UE first enters a network area, the network may provide the UE with a list of commonly used baseline configurations. Each baseline configuration may be identified by an index and a value tag. Subsequently, the network may transmit a reconfiguration message including, for example, only the index and value tag to indicate the desired configuration.

Abstract: Various aspects of the present disclosure enable a plurality of mobile devices (UEs) within a cell to spread out in time their respective transmissions of signaling messages, such as cell update messages, when the network enables or disables enhanced uplink (EUL, sometimes referred to as high-speed uplink packet access or HSUPA) while the UE is in the CELL_FACH state, by changing SIB5 or SIB5bis. In this way, the network load may be reduced, and a network blockage that otherwise might result from large numbers of UEs simultaneously transmitting the cell update message can be avoided. According to one example, a network node may be configured to distribute CELL_UPDATE messages or procedures to UEs when the network node enables or disables EUL in CELL_FACH by changing SIB5 or SIB5bis over time to reduce the network load. According to another example, a UE may be configured for utilizing a random timer or back-off timer to defer cell updates.

Abstract: Aspects of the disclosure relate to dual connectivity reporting. In one example, a dual connectivity communication is established, which includes a communication with a master node according to a first radio access technology (RAT), and a communication with a secondary node according to a second RAT. A change in measurement capability is then detected, and subsequently reported to the master node and/or secondary node. In another example, a scheduling entity establishes a first or second communication of a dual connectivity communication with a scheduled entity. The first communication is established according to a first RAT when operating as a master node, and the second communication is established according to a second RAT when operating as a secondary node. An indication is then received from the scheduled entity of a change in measurement capability, and the first and/or second communications are reconfigured in response to the change in measurement capability.

Abstract: Certain aspects of the present disclosure provide techniques for using a message to update a user equipment (UE) radio capability. For example a method of wireless communication by a user equipment (UE) may include generating a tracking area update (TAU) message with an indication of a UE radio capability update, transmitting the TAU message, and detaching and reattaching the UE from a network if a UE capability inquiry is not received from the network or a capability mismatch between the UE and the network is detected.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may camp on a cell of a first radio access technology (RAT). The UE may perform a cell search for a second RAT while camped on the cell of the first RAT, wherein the second RAT operates in a non-standalone mode with the first RAT. The UE may present, for display, an indication of whether the second RAT is available in the cell based at least in part on performing the cell search for the second RAT. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. One method may include a wireless communications device determining an inter-modulation distortion value between simultaneous communications on a first configuration of a first radio access network and a second configuration of a second radio access network, and dynamically switching between a non-standalone mode and a standalone mode of operation, based on the inter-modulation distortion value and a quality of service requirement for the standalone mode. The wireless communications device may also provide for time division multiplexing communications on a first RAT and a second RAT wherein only the first or second RAT is active during a period of time, and wherein the first RAT is an anchor for the second RAT.

Abstract: A system and method of performing a handover include detecting an out of sync event while being connected to a current cell, determining whether a measurement report time-to-trigger signal is active, sending, in response to the detection of the out of sync even and the measurement report time-to-trigger signal being active, a first new measurement report and a first special cause flag prior to a next scheduled measurement report to the communication network, receiving a first list of one or more neighboring cells suitable for a handover, identifying a first neighboring cell from the first list for the handover, and attempting to perform the handover from the current cell to the first neighboring cell.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine that a base station, associated with a first radio access technology, is shared between one or more operator networks of a second radio access technology; and display an icon corresponding to the second radio access technology based at least in part on a particular operator network, of the one or more operator networks, being a registered operator network of the user equipment and being associated with the second radio access technology. Numerous other aspects are provided.

Abstract: Examples described herein relate to enhancing data communication performance in a wireless communication network including a first subscription associated with a first radio access technology (RAT) and a second subscription associated with a second RAT, where the wireless communication device uses a same radio frequency (RF) resource to communicate over both the first RAT and the second RAT. The first RAT is used, in part, for data operations while the second RAT is used, in part, for voice operations. During idle state voice operations, the RF resource is reallocated from performing data operations to performing idle state voice operations, causing interruptions in the data operations. The wireless communication device adjusts at least one or a duration and an occurrence of the idle state voice operations to reduce the impact on the data operations.

Abstract: Aspects of the present disclosure provide methods and apparatuses that use various connection reconfiguration signaling schemes to enable fast user equipment reconfiguration in wireless networks. A network can reduce reconfiguration signaling traffic or overhead by reducing the amount of configuration data sent to each user equipment (UE) in a reconfiguration message. In some examples, when a UE first enters a network area, the network may provide the UE with a list of commonly used baseline configurations. Each baseline configuration may be identified by an index and a value tag. Subsequently, the network may transmit a reconfiguration message including, for example, only the index and value tag to indicate the desired configuration.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for allowing multiple P-RNTIs to be supported using communications systems operating according to new radio (NR) technologies. For example, a method for wireless communication by a base station (BS) generally includes receiving, from a core network, a paging message for a user equipment (UE) comprising a paging identifier and a paging offset; determining a plurality of available paging identifiers for the UE associated with the paging offset; selecting, from the plurality of available paging identifiers, at least a first paging identifier to associate with a first UE based on the paging identifier; and paging the first UE using the first paging identifier.

Abstract: A method for call setup for a voice-over-long-term evolution (VoLTE) call on multi-subscriber identity module (SIM) multi-standby (MSMS) mobile communication device includes: receiving a long-term evolution (LTE) page; determining whether a WiFi connection is available; in response to determining that the WiFi connection is not available, determining whether the LTE page was received on a non-dedicated data subscription (DDS) subscription; and in response to determining that the LTE page was received on the non-DDS subscription, granting a highest priority for communication activities to an LTE page response on the non-DDS subscription.

Abstract: Methods, systems, and apparatuses for wireless communication are described. A user equipment (UE) may receive information from a network node. The system information may include inter-frequency configuration and measurement reporting configuration. The UE may perform a measurement of a frequency or multiple frequencies that are associated with the inter-frequency configuration. Subsequent to the measurement, the UE may transmit a report of the measurement of the frequency or multiple frequencies to the network node during a radio resource control (RRC) connection procedure based on the measurement reporting configuration.

Abstract: Examples described herein relate to enhancing data communication performance in a wireless communication network including a first subscription associated with a first radio access technology (RAT) and a second subscription associated with a second RAT, where the wireless communication device uses a same radio frequency (RF) resource to communicate over both the first RAT and the second RAT. The first RAT is used, in part, for data operations while the second RAT is used, in part, for voice operations. During idle state voice operations, the RF resource is reallocated from performing data operations to performing idle state voice operations, causing interruptions in the data operations. The wireless communication device adjusts at least one or a duration and an occurrence of the idle state voice operations to reduce the impact on the data operations.

Abstract: Methods and systems are provided to perform an adaptive access procedure on a multi-subscriber identity module (SIM) wireless communication device having at least a first SIM and a second SIM associated with a shared radio frequency (RF) resource. The wireless communication device may detect that signaling on a random access channel (RACH) is required in order to establish access to a first network on a modem stack associated with the first SIM, identify a first protection window having a duration based on timing of an expected response by the first network to signaling on the RACH, and determine whether a tune-away period to decode a paging channel in a second network supported by the second SIM is scheduled to occur within the first protection window. If so, the wireless communication device may postpone signaling on the RACH until completion of the scheduled tune-away period.

Abstract: A multi-subscriber identification module (MSIM) wireless communication device may have at least a first SIM and a second SIM associated with a shared radio frequency (RF) resource. The wireless communication device may detect that the first SIM is set as a designated data subscription (DDS), such that a modem stack associated with the first SIM receives information broadcast by a first network. The wireless communication device may perform a network attach procedure with a second network on a modem stack associated with the second SIM, such that a default packet data network (PDN) connection is established with the second network. The wireless communication device may set the default PDN connection as a persistent PDN connection, with the modem stack associated with the second SIM maintaining at least one persistent PDN connection.

Abstract: A method for call setup for a voice-over-long-term evolution (VoLTE) call on multi-subscriber identity module (SIM) multi-standby (MSMS) mobile communication device includes: receiving a long-term evolution (LTE) page; determining whether a WiFi connection is available; in response to determining that the WiFi connection is not available, determining whether the LTE page was received on a non-dedicated data subscription (DDS) subscription; and in response to determining that the LTE page was received on the non-DDS subscription, granting a highest priority for communication activities to an LTE page response on the non-DDS subscription.

Abstract: Various methods for managing packet switched (PS) states on a mobile communication device may include performing, on a first subscription on the mobile communication device, a transition from a first radio access technology (RAT) to a second RAT, determining whether at least one application on the mobile communication device is utilizing on-demand PS services on the first subscription, and registering for circuit switched (CS) services but not PS services on the second RAT in response to determining that no applications on the mobile communication device is utilizing on-demand PS services on the first subscription.

Abstract: The disclosure provides for a UE handling messages in wireless communication. The disclosure provides for a UE partially exchanging a first signaling-related message associated with a first UE configuration with a network entity and triggering a state transition message that initiates a change to a second UE configuration different from the first UE configuration. In an aspect, the UE determines that the first message has not been successfully received or successfully transmitted. In an aspect, the UE sends an indication message to coordinate discarding of the first message with the network entity and receives, after sending the indication message, a second signaling-related message associated with the second UE configuration. In another aspect, the UE, after partially sending a signaling-related message, receives a reconfiguration request associated with a second UE configuration. In an aspect, the UE determines that the message has not been successfully transmitted and causes a reconfiguration failure.