Abstract: The present application relates to a paging mechanism. In an example, a network can transmit SSBs periodically on multiple SSB beams. A UE can receive, during a DRX cycle, an SSB per detected SSB beam and perform SSB-based measurements. Based on these measurements, the UE can perform PDCCH monitoring and PDSCH decoding on at least two beams. The PDCCH monitoring can indicate a scheduled paging message from the network. The PDSCH decoding can allow the UE to determine the paging message.

Abstract: Apparatuses, systems, and methods to enhance system performance (e.g., UL throughput) without impinging on (e.g., tightening) processing timeline for UL-SCH data and/or CSI reporting. A base station may request for a UE to send a CSI report(s) during PDCCH monitoring. The base station may also request the UE to send UL-SCH data. At a first transmit opportunity, the UE may transmit first PUSCH (including UL-SCH data that may be multiplexed onto the first PUSCH). Additionally, at a second (later) transmit opportunity, the UE may transmit second PUSCH (including the CSI report(s) that may be multiplexed onto the second PUSCH). The second transmit opportunity may be identified as a transmit opportunity starting at least a specified number of symbols after a first symbol of the first repetition. The specified number of symbols may be dependent upon at least one of UE uplink processing time capabilities or SCS.

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit control information to a UE in a shortened physical downlink control channel (sPDCCH). The sPDCCH may be included in shortened resource element groups (sREGs) of shortened channel control elements (sCCEs), which may be indexed in resource block (RB) sets by using localized or distributed mapping schemes. Updated sREG mapping schemes may result in a uniform distribution of sREGs within available symbols (and, as a result, a uniform distribution of unused resource blocks within the available symbols) and may ensure that sREGs within an sCCE are indexed into only one symbol.

Abstract: A base station of a network provides a user equipment (UE) with information relating to monitoring a Physical Downlink Control Channel (PDCCH) of multiple component carrier (CCs) in a carrier aggregation (CA) scheme. The base station configures a first CC and a second CC of a CA combination for a user equipment (UE) and provides the UE with information for the CA combination, wherein the information comprises an indication whether the first CC and the second CC are collocated.

Abstract: A user equipment (UE) may report physical uplink control channel (PUCCH) group capabilities to a network. The UE receives a request from a network for radio access capability information and reports whether a single PUCCH group having a plurality of component carriers (CC) using more than two numerologies across the CCs is supported. The UE may also receive a request from a network for radio access capability information and report whether a PUCCH group having a plurality of CC across multiple frequency bands is supported, wherein the report is configured per band combination (BC). The UE may also receive a request from a network for radio access capability information and report support for a PUCCH location configuration for a PUCCH group having a plurality of CC across multiple frequency bands, the PUCCH location configuration indicating which bands in a band combination (BC) may be used for the PUCCH.

Abstract: A user equipment (UE) monitors a Physical Downlink Control Channel (PDCCH) in multiple component carriers (CC). The UE determines if the UE is operating in carrier aggregation (CA) mode having a first CC in a first frequency band and a second CC in a second frequency band. When the UE is operating in CA with a first CC in the first frequency band and the second CC in the second frequency band, the UE determines a span pattern for PDCCH symbols being received on the first and second CC and selects a PDCCH monitoring type based on, at least, the span pattern. A UE also determines if a first CC and a second CC of a CA combination are collocated and selects a PDCCH monitoring type based on, at least, the determination of whether the first and second CC are collocated.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for maintaining phase coherency in the event of changes to uplink transmit power. For example, the techniques described herein may help mitigate the impact on phase continuity of uplink transmissions by UEs capable of dual connectivity (DC).

Abstract: Methods, systems, and devices for wireless communication are described that support time mask techniques for shortened transmission time intervals (sTTIs) that may enhance low latency communications. Time masks may be identified and applied for transmissions that use sTTIs, in a manner that provides increased portions of sTTI durations having higher transmission power, and thus increase the likelihood of successful reception of such transmissions at a receiver. In some cases, a transmitter, such as a user equipment (UE), may identify one or more sTTIs for transmissions of a first wireless service (e.g., an ultra-reliable low-latency communication (URLLC) service). An sTTI may be identified based on a duration of a TTI associated with the first wireless service being below a threshold duration (e.g., a TTI duration of less than 1 ms may be identified as an sTTI).

Abstract: Certain aspects of the present disclosure provide techniques for reducing a quantity of data sent carrier aggregation (CA) related capability reporting by a UE operating in a cell using full dimension multiple-input multiple-output (FD-MIMO) techniques. In an exemplary method, a base station obtains a relative weight of baseband processing for a component carrier (CC) configured for full-dimension multiple-input multiple-output (FD-MIMO) communications for a user equipment (UE); determines, based on the relative weight, to enable FD-MIMO downlink (DL) transmissions to the UE via the CC; and transmits an FD-MIMO transmission via the CC to the UE.

Abstract: Methods, systems, and devices for wireless communications are described. More specifically, the methods, systems, and devices support extending capability signaling to support higher modulation order baseband capability, such as higher order quadrature amplitude modulation (QAM), for example, 1024QAM. By way of example, a user equipment (UE) may transmit UE capability information to a base station (e.g., eNodeB (eNB), next-generation NodeB ((gNB)) in a connection establishment procedure. The UE capability information may include a UE category identifier and a baseband capability parameter. The baseband capability parameter may indicate a scaling factor for a first modulation order of a plurality of available modulation orders. The UE may communicate with the base station over multiple layers using corresponding modulation orders for the multiple layers.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to communicate with a base station on different channels or messages with different processing timelines. In order to prevent a collision between processing communications associated with the different length TTIs, the UE may drop one or more communications on corresponding channels with longer processing timelines to receive and/or process the transmission on the channel with a shorter processing timeline. Additionally, the UE may transmit uplink control information (UCI) for the one or more dropped communications, where the UCI may include hybrid access request (HARQ) acknowledgement/negative acknowledgement (ACK/NAK) feedback, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), etc. If a downlink transmission is dropped, the UE may transmit a NAK message. Alternatively, if an uplink transmission is dropped, the UE may transmit at least a portion of the UCI.

Abstract: Methods, systems, and devices for prioritization of channel state information (CSI) processes based on a set of priority rules and a device capability are described. A user equipment (UE) may be capable of supporting multiple communication types such as ultra-reliable low latency communications (URLLC), shortened transmission time interval (sTTI), enhanced mobile broadband (eMBB) priority type, etc. The UE may indicate a CSI update capability that includes a number of CSI processes capable of being updated by the UE. The CSI update capability may be a joint CSI update capability provided for all communication types. Based on the CSI update capability of the UE and the set of priority rules, the UE may prioritize the updating of one or more CSI processes.

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques generally provide for improved reference signal sharing techniques that support low latency communications. In accordance with the described techniques, a base station may transmit, and a user equipment (UE) may receive, signaling configuring the UE to transmit (or receive) a demodulation reference signal (DMRS) in an indicated transmission time interval (TTI) of a plurality of TTIs, where the DMRS is used for demodulation of a data symbol transmitted in a second TTI of the plurality of TTIs. In various examples, the base station or the UE may determine to skip a data transmission in the indicated TTI (e.g., depending on whether the transmission is in the uplink or downlink direction). The base station or the UE may then transmit the DMRS in the indicated TTI and the data symbol in the second TTI.

Abstract: Aspects are provided which allow an apparatus to efficiently indicate downgraded band combinations associated with carrier aggregation (CA) to a base station, in which one or more UE capabilities such as the DL MIMO of certain supported band combinations may be downgraded in exchange for other UE capabilities such as FD-MIMO and 256/1024QAM. The apparatus, which may be a UE, receives a request from a base station for information associated with downgraded band combinations and for information corresponding to at least one UE capability associated with each of the downgraded band combinations. After receiving the request, the UE sends, to the base station, information indicating the downgraded band combinations and the at least one UE capability. The UE may thus report downgraded band combinations for a subset of supported band combinations as requested by the base station, thereby minimizing capability reporting of the UE.

Abstract: A base station may transmit a grant to user equipment (UEs), indicating uplink resources for transmission of pending data at a UE. Uplink resources may include uplink resources associated with transmission time intervals (TTIs) and/or shortened TTIs (sTTIs). A UE may identify pending data associated with a data type (e.g., low latency data, internet traffic, etc.) and transmit a scheduling request (SR) for a grant of uplink resources. The data type of the pending data (e.g., the logic channel group identification (LCG ID) associated with a buffer status) may be indicated such that uplink resources may be granted to the UE to reduce latency. In some aspects, the SR may indicate uplink resources associated with sTTIs. Further, the UE may prioritize pending data and buffer status reports (BSRs) associated with other data within the received grant.

Abstract: In an aspect, a method of wireless communication includes receiving, by a user equipment (UE), downlink control information (DCI) having a resource allocation of allocated physical resource blocks (PRBs). The method additionally includes employing at least one of a) a wideband decoder, b) a wideband channel estimator, c) a bandwidth-specific decoder, or d) a bandwidth-specific channel estimator for wireless communications based at least on a feature of the resource allocation in the DCI. In other aspects a UE transmits, to a base station, an indication of UE capabilities regarding support of wideband physical resource group (PRG) for various transmission time interval (TTI) durations.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to communicate with a base station on different channels or messages with different processing timelines. In order to prevent a collision between processing communications associated with the different length TTIs, the UE may drop one or more communications on corresponding channels with longer processing timelines to receive and/or process the transmission on the channel with a shorter processing timeline. Additionally, the UE may transmit uplink control information (UCI) for the one or more dropped communications, where the UCI may include hybrid access request (HARQ) acknowledgement/negative acknowledgement (ACK/NAK) feedback, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), etc. If a downlink transmission is dropped, the UE may transmit a NAK message. Alternatively, if an uplink transmission is dropped, the UE may transmit at least a portion of the UCI.

Abstract: Systems, apparatuses, and methods for computing transport block size (TBS) for channels with shortened transmission time interval (sTTI). An initial size may be determined based on one or more TBS tables. The initial size may be scaled by a factor associated with an sTTI channel. A TBS table is selected based on the one or more TBS tables. The scaled size may be rounded based on the selected TBS table to generate a TBS for the sTTI channel.

Abstract: Aspects described herein relate to instructing, from a layer of a modem processor, a host processor to utilize an increased power consumption state for processing data from a network node. The instructing can be performed based on transmitting a signal to the network node and/or receiving signals from the network node, and at a time that allows the host processor to wake up before receiving data from the modem processor for processing.

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may communicate with a user equipment (UE) during short transmission time intervals (sTTIs). The base station may transmit reference signals in an sTTI for the UE to use to perform channel estimation for demodulating the data received in the sTTI. As described herein, a base station may transmit reference signals in a subset of the sTTIs used for downlink communications with the UE. The UE may receive the reference signals in the subset of the sTTIs and use these reference signals to perform channel estimation for demodulating data received in other sTTIs. In some cases, the UE may use the reference signals in one or more previous sTTIs in combination with the reference signals received in a current sTTI to perform channel estimation for demodulating data received in the current sTTI.