Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive system information from a base station indicating at least one configuration rule for power control parameter setting for random access. The UE may measure one or more reference signals and may estimate a path loss of wireless communications between the base station and the UE based on the measured reference signals. The UE may select one or more parameters from one or more sets of parameters indicated in the configuration rule. The UE may select a first transmit power for a preamble of a random access message and a second transmit power for a payload of the random access message, based on the estimated path loss and the configuration rule for power control parameters and power ramping procedures. The UE may transmit the random access message according to the selected first and second transmit powers.
Abstract:
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may autonomously initiate a handover procedure and select a target base station for the handover procedure. The UE may measure a signal from the source base station or the target base station, or both, and the UE may determine whether specific criteria at both base stations are within a pre-configured range. If the criteria at both base stations are within the pre-configured range, the UE may identify the target base station as a potential candidate for a handover. Accordingly, when the UE determines that radio conditions with the source base station are deteriorating (or fall below a threshold), the UE may initiate a handover to the target base station autonomously and without specific direction from the source base station.
Abstract:
A wireless communications power saving method and apparatus is provided. The method includes establishing a circular buffer configured to maintain a number of most recently encountered frame delay times and waiting a frame delay time after receiving a further frame before the station enters a power save state. Frame delay time is a period equal to a largest most recently encountered frame delay period in the circular buffer. The method further determines, at a station, a dormancy time based on a number of data frames received since the station transitioned from an inactive mode to an active mode, a packet transmission rate, and a data frame time interval representing time between data frames received at the station, and causes the station to switch to a further inactive mode if a next packet is not received within the dormancy time after receipt of a previous packet.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may monitor, within an activation period for a control channel associated with the UE, for messages from a base station within first monitoring occasions defined by a first monitoring pattern. The UE may further monitor, after expiry of a timer associated with the first monitoring pattern, for messages from the base station within second monitoring occasions defined by a second monitoring pattern. In some aspects, the UE may receive, while monitoring within the first monitoring occasions, control information from the base station, and reset the timer associated with the first monitoring pattern. Additionally, or alternatively, the UE may monitor, after expiry of a timer associated with the second monitoring pattern, for messages from the base station within third monitoring occasions defined by a third monitoring pattern. Numerous other aspects are provided.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit uplink data to a base station in a configured grant small data transfer (CG-SDT) occasion in a CG-SDT occasion group associated with multiple UEs. The UE may receive a group common physical downlink control channel (GC-PDCCH) multiplexing CG-SDT feedback targeted to the multiple UEs associated with the CG-SDT occasion group. In some aspects, the CG-SDT feedback multiplexed in the GC-PDCCH includes CG-SDT feedback for the uplink data transmitted in the CG-SDT occasion. Numerous other aspects are provided.
Abstract:
Some techniques and apparatuses described herein provide an indication of a result of decoding a two-step random access channel (RACH) message and an action to be performed by a user equipment (UE). For example, some techniques and apparatuses described herein may provide the indication using a UE contention resolution identity-based approach, wherein the contention resolution identity of the UE may be provided in a random access response. Some techniques and apparatuses described herein may use a fallback indicator that indicates the result of decoding and/or the action to be performed. Some techniques and apparatuses described herein may use a random access response (RAR) subheader that selectively omits a random access preamble identifier based at least in part on the result of decoding and/or the action to be performed.
Abstract:
Methods, systems, and devices for signaling for transmission configuration indication (TCI) state activation for multiple transmission reception points are described. A user equipment (UE) may receive at least one control message indicating a first set of beam configurations associated with a first downlink shared channel from a first transmission reception point (TRP) and a second set of beam configurations associated with a second downlink shared channel from a second TRP. The UE may receive downlink control information (DCI) from the first and second TRPs indicating a first beam configuration of the first set of beam configurations and a second beam configuration of the second set of beam configurations, respectively. The UE may subsequently decode a first downlink transmission from the first downlink shared channel according to the first beam configuration and a second downlink transmission from the second downlink shared channel according to the second beam configuration.
Abstract:
A method of wireless communication by a base station includes configuring a tracking reference signal (TRS) with respect to a physical downlink shared channel (PDSCH) for an idle/inactive mode user equipment (UE). The method also transmits the tracking reference signal and the PDSCH during a paging cycle, in accordance with the configuration. A method of wireless communication by a UE includes expecting a TRS to be received when a PDSCH is received.
Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a dual connectivity configuration for a plurality of communication links, where at least one communication link of the plurality of communication links includes a sidelink. The UE may transmit a report based on an event associated with the sidelink. In some cases, the UE may determine the event associated with the sidelink based on identifying an activation of the at least one additional sidelink carrier, establishing a relay communication link between the UE and a relay network node, measuring a set of path loss values, determining a minimum path loss value of the measured set of path loss values, determining a backoff value for one or more sidelink carriers, or any combination thereof.
Abstract:
Aspects described herein relate to transmitting, by a device and to a base station, assistance information to facilitate configuring one or more parameters for communicating with the base station, detecting, by the device, that an assistance response signal including the one or more parameters based on the assistance information is not received from the base station within a threshold period of time, degrading, by the device and based on the detecting that the assistance response signal is not received within the threshold period of time, feedback to be communicated to the base station.