Abstract: Aspects of the present disclosure provide techniques to enable enhanced machine type communication (s) (eMTC) and/or narrowband Internet-of-Things (NB-IoT) devices to transition to idle mode after releasing a connection, such as a radio resource control (RRC) connection, more quickly than with previously known techniques. An example method includes determining, based on an indication received in a narrowband signal on a narrowband region of a bandwidth comprising a plurality of narrowband regions, whether to wait for a delay period, determined based on a configuration received from a network entity, before releasing a radio resource control (RRC) connection and releasing the RRC connection at a time in accordance with the determination.

Abstract: The present disclosure relates to a user equipment (UE) dynamically adjusting a non-access stratum (NAS) timer. Specifically, the UE may determine operation in a wideband and support of an extended coverage (EC) restriction. The UE may further identify a duration of a non-access stratum (NAS) timer based on determining operation in the wideband and the EC restriction. The UE may further transmit an access request message to a network entity to trigger a mobility management procedure. The UE may further receive an acceptance message from the network entity indicating an unrestricted or restricted status of the EC restriction. The UE may further apply the duration to the NAS timer based on the acceptance message indicating the unrestricted or restricted status of the EC restriction received from the network entity or a history of EC restrictions of a public land mobile network (PLMN) in a defined geographic area.

Abstract: Aspects described herein relate to configuring and indicating radio resource control (RRC) message types in wireless communications, to support new UE categories, new operation modes, new use cases, or a combination thereof. Configuration and indication methods that may support co-existence of new and legacy RRC message types and/or user equipment (UE) procedures for decoding new RRC message type are also described.

Abstract: Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes: performing connection reestablishment in response to a triggering condition, the connection reestablishment comprising: suspending operation of at least one data radio bearer (DRB) for carrying user data, transmitting a connection reestablishment request to a base station (BS), receiving from the BS a connection reestablishment message, and transmitting a connection reestablishment complete message to the BS; and transmitting at least a portion of the user data over non-access stratum (NAS) signaling, before the operation of the at least one suspended DRB is resumed.

Abstract: Device wakeups can consume a significant amount of power with respect to the device's total power battery lifetime. Aspects of a method, apparatus, and computer-readable medium are presented herein that provide a solution to the problem of battery strain by improving the manner in which a wireless device coordinates device wakeup for multiple applications or multiple operations. An apparatus receives a wakeup time interval from each of a plurality of applications. The apparatus forms a first device wakeup time interval, the first device wakeup time interval including overlapping wakeup time intervals for the plurality of applications. The apparatus schedules a device wakeup during at least the first device wakeup time interval.

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, otherwise known as a user equipment (UE) may transmit a data transmission to a receiver. In some examples, the data transmission may be a radio link control (RLC) protocol data unit (PDU) transmission. The UE may store the data transmission in a retransmission buffer, and transmit a feedback request to the receiver in a subsequent data transmission based on a system memory utilization threshold for the retransmission buffer being satisfied due to storage of the data transmission.

Abstract: Methods and apparatus for selection of radio access technology (RAT) based on device usage patterns are provided. A User Equipment (UE) obtains information relating to one or more Quality of Service (QoS) metrics for communication of data by the UE. The UE designates a Radio Access Technology (RAT) from a plurality of available RATs as a preferred RAT for the communication, based on the obtained information.

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: Methods for conserving power in a multi-mode wireless device capable of communicating via a first radio access technology (RAT) and second RAT in which communication using the first RAT is preferred are disclosed. Various embodiments may include methods to determine whether a condition warrants attempting a connection with the first RAT in response to the multi-mode wireless device communicating using the second RAT, in response to determining that no condition warrants attempting a wireless connection using the first RAT, continue to communicate using the second RAT for a first duration before again determining whether a condition warrants attempting a connection with the first RAT, and determine whether a connection can be made to the first preferred RAT in response to determining that a condition warrants attempting a wireless connection using the first RAT.

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more specifically, to enhanced or evolved machine type communication (eMTC) power saving mode (PSM) enhancements for service outage. An example method generally includes receiving, from a modem of the wireless node, a first indication that indicates at least one of: network connectivity or network accessibility at the wireless node; receiving, from an applications processor of the wireless node, a second indication that indicates at least one of: server accessibility or availability of one or more applications; and determining when to enter a PSM based, at least in part, on at least one of: the first or second indications.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for avoiding conflicts between evolved Multimedia Broadcast Multicast Services (eMBMS) operations and paging and/or mobile originated (MO) operations in communication systems. A method for wireless communications by a user Equipment (UE) is provided. The method generally includes identifying at least one evolved Multimedia Broadcast Multicast Service (eMBMS) session available for receiving one or more eMBMS services from a base station. The method also includes taking one or more actions to reduce a conflict between receiving the one or more eMBMS services from the base station and receiving a paging message from the base station during the eMBMS session. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) operating in a narrowband communications system with a base station may identify a radio link failure (RLF) and then initiate a radio resource control (RRC) connection reestablishment procedure to reconnect with the base station. As part of the connection reestablishment procedure, the UE may transmit a reestablishment complete message to the base station to indicate the connection reestablishment procedure is successful and include a measurement report related to downlink signals received from the base station in the reestablishment complete message. In some cases, the measurement report may include an indication of downlink signal strength and downlink signal quality. As such, the UE may transmit the measurement report in a single RRC message after identifying the RLF. Based on the measurement report, the base station may then perform network planning.

Abstract: There is a need to support HARQ retransmission for narrow-band communications. The present disclosure provides a solution by supporting a HARQ retransmission timer for narrow-band communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The method for wireless communication at a user equipment may include receiving, by a user equipment (UE), a hybrid automatic repeat request (HARQ) retransmission timer, the HARQ retransmission timer indicates a time interval, identifying, by the (UE), data for uplink transmission, and starting, by the UE and after expiration of the HARQ retransmission timer, a random access procedure to obtain an uplink grant for the data.

Abstract: Aspects of the present disclosure provide techniques to enable enhanced machine type communication (s) (eMTC) and/or narrowband Internet-of-Things (NB-IoT) devices to transition to idle mode after releasing a connection, such as a radio resource control (RRC) connection, more quickly than with previously known techniques. An example method includes determining, based on an indication received in a narrowband signal on a narrowband region of a bandwidth comprising a plurality of narrowband regions, whether to wait for a delay period, determined based on a configuration received from a network entity, before releasing a radio resource control (RRC) connection and releasing the RRC connection at a time in accordance with the determination.

Abstract: Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes determining a scheduled occurrence of a measurement gap, wherein the UE measures neighbor cell signal strength during the measurement gap, and adjusting the measurement gap based on at least one criterion.

Abstract: Device wakeups can consume a significant amount of power with respect to the device's total power battery lifetime. Aspects of a method, apparatus, and computer-readable medium are presented herein that provide a solution to the problem of battery strain by improving the manner in which a wireless device coordinates device wakeup for multiple applications or multiple operations. An apparatus receives a wakeup time interval from each of a plurality of applications. The apparatus forms a first device wakeup time interval, the first device wakeup time interval including overlapping wakeup time intervals for the plurality of applications. The apparatus schedules a device wakeup during at least the first device wakeup time interval.

Abstract: Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes: performing connection reestablishment in response to a triggering condition, the connection reestablishment comprising: suspending operation of at least one data radio bearer (DRB) for carrying user data, transmitting a connection reestablishment request to a base station (BS), receiving from the BS a connection reestablishment message, and transmitting a connection reestablishment complete message to the BS; and transmitting at least a portion of the user data over non-access stratum (NAS) signaling, before the operation of the at least one suspended DRB is resumed.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine that a reselection timer has an expiration time that is to extend an active period of a discontinuous reception (DRX) cycle; determine whether to extend the active period based at least in part on at least one of a set of serving cell measurements or a duration that the expiration time is to extend the active period; and selectively extend the active period or enter a sleep mode without extending the active period based at least in part on determining whether to extend the active period. Numerous other aspects are provided.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, using a real-time clock (RTC) included in a microcontroller, that a modem module is to exit a power saving mode; instruct a load switch to connect the modem module to a battery of the UE based at least in part on the determination; and instruct the modem module to exit the power saving mode based at least in part on the determination. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communication are described. Data for a broadcast or multicast service may be sent over a control channel. A network device may broadcast a message to indicate a plurality of enhanced multimedia broadcast multicast service (eMBMS) services offered by the network. The mobile device may transmit an indication to the network device identifying an eMBMS service of interest. The network device may transmit a configuration message before broadcasting or multicasting data of the eMBMS service of interest. The configuration message may notify the mobile device of a control channel on which to receive the data related to the eMBMS service. The network device may then broadcast or multicast the eMBMS service data on the control channel. The data may be segmented at a particular protocol layer and mapped to several transmission time intervals within each repetition of the control channel.