Various methods and devices are provided to address the need for reducing interference in heterogeneous wireless networks. In one apparatus, a network node (500) that includes a transceiver (502) and a processing unit (501) is provided. The processing unit is configured to transmit, via the transceiver, downlink signaling at a primary power spectral density (PSD) level and to also transmit, via the transceiver, a group of control channel elements (CCEs) on a physical downlink control channel (PDCCH) at a reduced PSD level, the reduced PSD level being less than the primary PSD level.

Embodiments are provided to enable downlink open-loop multi-user coordinated multipoint (MU-CoMP) transmission using sparse code multiple access (SCMA). In an embodiment, a network controller selects, in a cluster of multiple transmission points (TPs) and multiple user equipment (UEs), a MU-CoMP with SCMA transmission mode and a UE paring scheme for data transmission from a set of TPs to a set of UEs. The controller schedules the set of UEs for data transmission from the set of TPs, including coordinating and allocating, for each TP in the set of TPs, a plurality of SCMA layers to the UEs in accordance with the selected MU CoMP with SCMA transmission mode. The controller also determines values for control signaling based on the scheduling. The control signaling configures the set of UEs to detect the data transmission from the TPs.

A method and network node (130; 110; 111) for managing transmit power of a wireless device (120) in a wireless communication network (100). Cells (115, 116) for serving the wireless device (120) form at least one imbalance region (117) in which the wireless device (120) has the best quality in the downlink to a first cell (115) of a first type and in the uplink to a second cell (116) of a different, second type. The network node (130; 110; 111) identifies (301; 602) a situation associated with a risk for undesired increase of transmit power used by the wireless device (120) when the wireless device (120) moves in the imbalance region (117). The network node (130; 110; 111) provides (302; 602), in response to the identification, power control that makes the wireless device (120) increase transmit power slower than else would be the case.

Embodiments of the present disclosure describe techniques and configurations for triggering transmission of data payloads in a wireless communication network. An apparatus may include one or more computer-readable media having instructions and one or more processors coupled with the one or more computer-readable media and configured to execute the instructions to implement an interworking function (IWF) to receive, from a Machine Type Communication (MTC) server, a trigger request to trigger sending of a data payload over a wireless communication network, the data payload being smaller than a preconfigured threshold, and send, in response to the trigger request over a reference point to a module including a Mobility Management Entity (MME) or a Serving GPRS (General Packet Radio Service) Support Node (SGSN), a trigger notification to trigger sending of the data payload over the wireless communication network.

Certain aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for determining when to apply downlink control information (DCI)-based updates. A method that may be performed by a user equipment (UE) includes receiving a downlink control information (DCI) indicating an update to be applied to at least one of an uplink (UL) transmission or a downlink (DL) transmission, determining an application time for applying the update based, at least in part, on a slot where an acknowledgement (ACK) was transmitted, and applying the update in accordance with the determined application time.

A random access method and an apparatus of a terminal for performing random access procedure to multiple base stations in parallel in a Long Term Evolution (LTE) system supporting dual connectivity are provided. The method includes determining whether a first preamble transmission to a first cell of a first base station is overlapped with a second preamble transmission to a second cell of a second base station in a time domain, determining, when the first preamble transmission is overlapped with the second preamble transmission in the time domain, whether a sum of transmit powers calculated for the first and second preamble transmissions is greater than a maximum allowed transmit power of the terminal, and controlling, when the sum of the first and second preamble transmit powers is greater than the maximum allowed transmit power, the transmit power calculated for the second preamble transmission.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may monitor a wake-up signal (WUS) occasion based at least in part on a discontinuous reception cycle activation duration timer; and receive a reference signal (RS) during the WUS occasion, wherein the RS is to facilitate a UE-assisted calibration of at least one antenna element on at least one panel associated with a base station or a base station-assisted calibration of at least one antenna element on at least one panel associated with the UE. Numerous other aspects are provided.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may generate a wake up signal to wake up a plurality of second UEs. The wake up signal may be based at least in part on location information associated with the UE, location information associated with one or more of the plurality of second UEs, or a combination thereof. The UE may further transmit, to the plurality of second UEs, the wake up signal. Accordingly, the plurality of second UEs may receive the wake up signal and monitor for messages from the second UE based at least in part on receiving the wake up signal. Numerous other aspects are provided.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates a sounding reference signal (SRS) resource set to be used for analog channel state feedback (CSF) and an association between the SRS resource set and a set of downlink channel state information reference signals (CSI-RSs). The UE may measure the set of downlink CSI-RSs associated with the SRS resource set. The UE may transmit one or more SRSs for analog CSF using the SRS resource set and based at least in part on measuring the set of downlink CSI-RSs. Numerous other aspects are provided.

The disclosure provides a base station and a method for optimizing the coverage of a self-defined network. The method includes: receiving a measurement report from user equipment; in response to determining that the measurement report indicates that a neighboring first base station is present, sending a member tracking message to the first base station; determining whether the first base station belongs to any other base station group based on a member tracking response from the first base station; in response to determining that the first base station does not belong to any other base station group, adding the first base station to a base station group managed by the base station; and in response to determining that the member tracking response indicates that the first base station belongs to another base station group, merging the base station group and the another base station group.