Abstract: Got Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may switch between a first radio access technology (RAT) and a second RAT based at least in part on a condition. The UE may modify, based at least in part on the switching, a second RAT threshold value in a system information block (SIB), to obtain a modified second RAT threshold value, wherein the modified second RAT threshold value is a value to switch from the first RAT to the second RAT. Numerous other aspects are described.

Abstract: A method of wireless communication includes receiving, by a user equipment (UE), a system information block of type 21 (SIB21) from a network device. The SIB21 indicates a communication resource pool associated with a sidelink. The method further includes receiving one or more messages from the network device based on receiving the SIB21 and prior to communicating using the communication resource pool. The method further includes communicating, based on verifying an identity of the network device based on the one or more messages, via the sidelink using the communication resource pool and based on a vehicle-to-everything (V2X) wireless communication protocol.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit first capability information indicating a first set of band configurations. The UE may transmit, after the transmission of the first capability information, second capability information indicating a second set of band configurations. The UE may receive information indicating a band configuration, wherein the band configuration that is not included in at least one of the first set of band configurations or the second set of band configurations. The UE may communicate using the band configuration. Numerous other aspects are provided.

Abstract: This disclosure provides systems, methods and apparatuses for measurement of cells and determination of a non-standalone (NSA) coverage status using an NSA coverage database. The NSA coverage database may indicate candidate frequencies of New Radio (NR) cells that provide NSA coverage corresponding to a given Long Term Evolution (LTE) serving cell. The NSA coverage database may also indicate whether a system information block 1 (SIB1) has been previously received on a candidate frequency. The user equipment (UE) may perform measurement of candidate frequencies using the NSA coverage database, and may identify cases where a cell not providing NSA coverage has a same candidate frequency as a cell providing NSA coverage using the indication of whether SIB1 has been previously received on a candidate frequency.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to a base station, a UE capability message associated with a number of downlink multiple-input and multiple-output (MIMO) layers supported at the UE. The UE may receive a configuration for a set of downlink MIMO layers including a first subset of downlink MIMO layers configured for a first cell and a second subset of downlink MIMO layers configured for a second cell. The UE may allocate a first set of resources to the first cell or the second cell, or both, based on the first and the second subset of downlink MIMO layers. The UE may determine a second set of resources are unallocated to the set of downlink MIMO layers and allocate the second set of resources to the first cell or the second cell, or both.

Abstract: Various embodiments include methods, components and wireless devices configured to identify illegitimate base station. The processor of the wireless device may determine that a device in communication with the wireless device is a suspect base station. The processor may send a fabricated message to the device, and may receive one or more response messages from the device. The processor may determine whether one or more of the response messages received from the device is an appropriate response or an inappropriate response to the fabricated message. In response to determining that a response message is an inappropriate response, the processor may determine that the device is an illegitimate base station. In response to determining that the device is an illegitimate base station, the wireless device may perform a protective action.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may receive a first connected mode discontinuous reception (CDRX) configuration from a first cell associated with a first radio access technology (RAT), the first CDRX configuration includes a first indication of a first on occasion. The UE may receive a second CDRX configuration from a second cell associated with a second RAT, the second CDRX configuration includes a second indication of a second on occasion. The UE may determine that the first on occasion and the second on occasion are separated by a threshold. The UE may transmit, based at least in part on the determination that the first on occasion and the second on occasion are separated by the threshold, a CDRX reconfiguration request message.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a first subscription of the UE and a second subscription of the UE are associated with a same cell and are being used for a same radio access technology (RAT). The UE may activate a proxy subscription mode for the first subscription based at least in part on the determination that the first subscription of the UE and the second subscription of the UE are associated with the same cell and are being used for the same RAT, wherein the proxy subscription mode enables the UE to use the first subscription to perform one or more idle mode operations for the second subscription while the second subscription is in an idle mode. Numerous other aspects are provided.

Abstract: A method of wireless communication includes receiving, by a user equipment (UE), a system information block of type 21 (SIB21) from a network device. The SIB21 indicates a communication resource pool associated with a sidelink. The method further includes receiving one or more messages from the network device based on receiving the SIB21 and prior to communicating using the communication resource pool. The method further includes communicating, based on verifying an identity of the network device based on the one or more messages, via the sidelink using the communication resource pool and based on a vehicle-to-everything (V2X) wireless communication protocol.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may establish, in a communication mode, a communication connection with a first radio access technology (RAT) or a second RAT. The UE may receive or identify an indication to deprioritize the first RAT. The UE may perform, based at least in part on the indication to deprioritize the first RAT, an action to deprioritize the first RAT, where the action is based at least in part in the communication mode. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit assistance information to a base station to request an update or a modification to one or more communication parameters configured at the UE. Such communication parameters may include a quantity of uplink multiple-input multiple-output (MIMO) layers, a quantity of downlink MIMO layers, a minimum scheduling offset, a maximum quantity of component carriers, or a maximum aggregated bandwidth for a secondary cell group (SCG). In some implementations, the UE may transmit the assistance information requesting the update or modification to one or more of such communication parameters based on detecting that the UE satisfies one or more triggering conditions or thresholds.

Abstract: Techniques and apparatus for optimizing an initial access stratum security mode command procedure are described. One example technique includes sending a first service request to establish a connection with a network. A second service request is sent to the network, upon determining that one or more criteria is satisfied. Another example technique includes sending a first service request to establish a connection with a network and sending a second service request after sending the first service request. The first service request is associated with a first security parameter and the second service request is associated with a second security parameter. A security mode command procedure is participated in with a base station, based on the first security parameter and the second security parameter.

Abstract: Various embodiments include methods, components and wireless devices configured to identify illegitimate base station. The processor of the wireless device may determine that a device in communication with the wireless device is a suspect base station. The processor may send a fabricated message to the device, and may receive one or more response messages from the device. The processor may determine whether one or more of the response messages received from the device is an appropriate response or an inappropriate response to the fabricated message. In response to determining that a response message is an inappropriate response, the processor may determine that the device is an illegitimate base station. In response to determining that the device is an illegitimate base station, the wireless device may perform a protective action.

Abstract: Apparatuses and methods for a wireless communication device having a first Subscriber Identity Module (SIM) and a second SIM to manage communication via the first SIM and the second SIM, the method includes, but not limited to, registering the first subscription to a first Public Land Mobile Network (PLMN), wherein the first PLMN is associated with at least one parameter, identifying a second PLMN for the second subscription based on the at least one parameter, and registering the second subscription to the second PLMN.

Abstract: Embodiments described herein relate to managing communications for a first subscription and a second subscription of a wireless communication device, including, but not limited to, using a reduced re-order release timer having a reduced length in response to determining that a length of a tune-away interval exceeds a threshold. In some embodiments, a reduced status prohibit timer is initiated in response to determining that the length of the tune-away interval exceeds a threshold. In some embodiments, two or more status reports are transmitted during a same status prohibit timer in response to determining that transmission window occupancy exceeds a threshold.

Abstract: A method and apparatus for reducing call drop rate by validating reconfiguration messages based on service data unit (SDU) lifetime are described. A receiving device, such as a user equipment, may determine a receiving delay between receiving a first protocol data unit (PDU) and receiving a last PDU of a reconfiguration message SDU. The receiving delay may be compared with an SDU lifetime. The reconfiguration message SDU may be validated based on the comparison of the receiving delay with the SDU lifetime. A receiving delay that is greater than the SDU lifetime may indicate that the SDU is stale and, therefore, invalid. A receiving delay that is less than the SDU lifetime may indicate that the timing of the SDU is valid and the reconfiguration message SDU is to be processed. An activation time of the reconfiguration message SDU may also be honored or disregarded based on the receiving delay.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The method comprises: receiving a message at a user equipment (UE) from a source base station connected to a first radio network controller to relocate to a target base station connected to a second network controller different from the first network controller; detecting an unrecoverable Radio Link Control (RLC) error at the UE; and ignoring the RLC unrecoverable error when it occurs after receiving the message to relocate while the UE is still connected to the source base station, before relocation is completed, and proceeding to relocate to the target base station. Various alterations and embodiments are disclosed.

Abstract: Aspects described herein relate to throttling packet-switched (PS) call establishment in wireless communications. A circuit-switched (CS) call can be conducted by using a first radio access technology (RAT). A cell update (CU) procedure for a PS call using a second RAT can be detected as due to one or more conditions. A cause for the one or more conditions can be determined based on one or more parameters related to a transmitter or receiver.

Abstract: A method and apparatus for avoiding call drops during Serving Radio Network Subsystem (SRNS) relocation procedure are described. In an aspect, the method may include receiving an SRNS RELOCATION message and initiating a handover procedure from a first radio network subsystem (RNS) to a second RNS based on the SRNS RELOCATION message. The method may include identifying a downlink (DL) message and identifying an uplink (UL) message. The method may include holding the DL message and the UL message at a radio resource control (RRC) layer until completion of the handover procedure. In another aspect, the SRNS RELOCATION message may include a new FRESH value. The method may include retaining an old FRESH value determined before the SRNS RELOCATION was received. The method may include applying both the old FRESH value and new FRESH value to the DL message to determine if the DL message is valid.