Aspects of the subject disclosure may include, for example, a method, includes coordinating relay transmission of a modulated signal via relay links of a distributed antenna system to reduce an accumulated forwarding delay in forwarding the modulated signal through the relay links. One of the relay links of the distributed antenna system reconverts the spectral segment of the modulated signal for transmission to a communication device to which the modulated signal is directed.

Systems and methods can support threat detection using electromagnetic signatures. One or more sensors comprising radio receivers may receive radio frequency signals within an electromagnetic environment. Radio frequency signatures may be identified from one or more of the radio frequency signals. A baseline electromagnetic environment may be established from the radio frequency signatures. The radio frequency signatures may be monitored over time to detect variations from the baseline electromagnetic environment. Variations in the electromagnetic environment may be evaluated against stored threat signatures. Operator interfaces may present indications of threats determined from evaluating the variations in the electromagnetic environment.

Systems and methods can support threat detection using electromagnetic signatures. One or more sensors comprising radio receivers may receive radio frequency signals within an electromagnetic environment. Radio frequency signatures may be identified from one or more of the radio frequency signals. A baseline electromagnetic environment may be established from the radio frequency signatures. The radio frequency signatures may be monitored over time to detect variations from the baseline electromagnetic environment. Variations in the electromagnetic environment may be evaluated against stored threat signatures. Operator interfaces may present indications of threats determined from evaluating the variations in the electromagnetic environment.

Wireless communication techniques that include PTRS resource density recommendation and selection techniques are discussed. A UE may transmit to a base station a set of phase tracking reference signal (PTRS) resource density recommendations that are determined based, at least in part, on a block error rate (BLER). The base station may transmit to the UE an indication of PTRS resource densities to use for wireless communication of the PTRS based, at least in part, on the BLER associated with the received set of PTRS resource density recommendations. The base station and/or the UE may at least one of receive or transmit a PTRS based, at least in part, on the indicated PTRS resource densities. Other aspects and features are also claimed and described.

Wireless communication techniques that include PTRS resource density recommendation and selection techniques are discussed. A UE may transmit to a base station a set of phase tracking reference signal (PTRS) resource density recommendations that are determined based, at least in part, on a block error rate (BLER). The base station may transmit to the UE an indication of PTRS resource densities to use for wireless communication of the PTRS based, at least in part, on the BLER associated with the received set of PTRS resource density recommendations. The base station and/or the UE may at least one of receive or transmit a PTRS based, at least in part, on the indicated PTRS resource densities. Other aspects and features are also claimed and described.

Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support non-terrestrial network (NTN) signaling between both terrestrial and non-terrestrial devices. A user equipment (UE) supporting such NTN signaling may receive a downlink message indicating a first configuration for a first transmission reception point corresponding to a first cell of the NTN, and a second configuration for a second transmission reception point corresponding to a second cell of the NTN. The UE may then perform one or more synchronization measurements to synchronize uplink communications with the first transmission reception point and the second transmission reception point and in order to perform multi-transmission reception point communications in the NTN. The UE may then transmit one or more uplink messages to the first transmission reception point, to the second transmission reception point, or both, in accordance with the one or more synchronization measurements.

Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support non-terrestrial network (NTN) signaling between both terrestrial and non-terrestrial devices. A user equipment (UE) supporting such NTN signaling may receive a downlink message indicating a first configuration for a first transmission reception point corresponding to a first cell of the NTN, and a second configuration for a second transmission reception point corresponding to a second cell of the NTN. The UE may then perform one or more synchronization measurements to synchronize uplink communications with the first transmission reception point and the second transmission reception point and in order to perform multi-transmission reception point communications in the NTN. The UE may then transmit one or more uplink messages to the first transmission reception point, to the second transmission reception point, or both, in accordance with the one or more synchronization measurements.

Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) may transmit, to a network entity, a first signal including a request to update a resolution of a phase shifting operation associated with beam-based communications. The UE may receive, from the network entity, a second signal approving the request. The UE may communicate using a beam according to an updated resolution of the phase shifting operation based on the second signal approving the request. Additionally, or alternatively, the UE may transmit a first signal including a request to suspend a beam refinement process based on the resolution of the phase shifting operation. The UE may receive a second signal approving the request to suspend the beam refinement process. The UE may communicate with the network entity using a beam based on suspending further beam refinement in response to the second signal.

Methods, systems, and devices for wireless communication are described. In some systems, a user equipment (UE) may transmit, to a network entity, a first signal including a request to update a resolution of a phase shifting operation associated with beam-based communications. The UE may receive, from the network entity, a second signal approving the request. The UE may communicate using a beam according to an updated resolution of the phase shifting operation based on the second signal approving the request. Additionally, or alternatively, the UE may transmit a first signal including a request to suspend a beam refinement process based on the resolution of the phase shifting operation. The UE may receive a second signal approving the request to suspend the beam refinement process. The UE may communicate with the network entity using a beam based on suspending further beam refinement in response to the second signal.

A GSM satellite communication system is in communication with a first satellite having a first field of view including a first plurality of cells in which a plurality of active User Equipment (UEs) is located. The plurality of active UEs is in direct communication with the first satellite. The satellite communication system includes a first feeder link and a first tracking antenna configured to communicate with the plurality of active UEs via the first satellite directly serving the first plurality of cells; a first processing device configured to communicate with the plurality of active UEs; and a second processing device configured to normalize delay for a plurality of beam centers of the first plurality of cells, and provide the normalized delay to the first processing device.