The present disclosure relates to a distributed antenna monitoring apparatus for monitoring antennas of a distributed antenna system (DAS) installed in a building in a public safety radio network, and a method therefor. The distributed antenna monitoring apparatus disclosed herein includes: a radio coupler configured to couple a monitoring radio signal to be transmitted and received to and from distributed service antennas; a master unit configured to transmit the monitoring radio signal having a diagnostic packet included therein to the distributed service antennas through the radio coupler, and receive a monitoring radio signal having a response packet included therein from each of the distributed service antennas to measure a received signal strength indication for uplink (RSSI_U), analyze the measured received signal strength indication for uplink (RSSI_U) and a received signal strength indication for downlink (RSSI_D) to monitor a state of each of the distributed service antennas; and a plurality of remote units respectively connected to the distributed service antennas through radio links, and each configured to receive the monitoring radio signal having the diagnostic packet included therein transmitted from the master unit to measure the received signal strength indication for downlink (RSSI_D), assemble the response packet having the measured received signal strength indication for downlink (RSSI_D) and transmit the monitoring radio signal having the assembled response packet to the master unit.

The present disclosure relates to a distributed antenna monitoring apparatus for monitoring antennas of a distributed antenna system (DAS) installed in a building in a public safety radio network, and a method therefor. The distributed antenna monitoring apparatus disclosed herein includes: a radio coupler configured to couple a monitoring radio signal to be transmitted and received to and from distributed service antennas; a master unit configured to transmit the monitoring radio signal having a diagnostic packet included therein to the distributed service antennas through the radio coupler, and receive a monitoring radio signal having a response packet included therein from each of the distributed service antennas to measure a received signal strength indication for uplink (RSSI_U), analyze the measured received signal strength indication for uplink (RSSI_U) and a received signal strength indication for downlink (RSSI_D) to monitor a state of each of the distributed service antennas; and a plurality of remote units respectively connected to the distributed service antennas through radio links, and each configured to receive the monitoring radio signal having the diagnostic packet included therein transmitted from the master unit to measure the received signal strength indication for downlink (RSSI_D), assemble the response packet having the measured received signal strength indication for downlink (RSSI_D) and transmit the monitoring radio signal having the assembled response packet to the master unit.

Methods, systems, and devices for wireless communications are described. A first wireless device may transmit signaling to an assistive node, and the assistive node may retransmit the signaling to a second wireless device. The assistive node may be configured with a mapping between receive beams and transmit beams at the assistive node. The mapping may enable the assistive node to receive signaling using a receive beam with a first beamwidth and retransmit the signaling using a transmit beam with a second, different beamwidth.

This document describes methods, devices, systems, and means for user-equipment-coordination-set (404) selective participation in which a coordinating user equipment (111) determines which user equipments in the user-equipment-coordination-set (404) participate in a joint communication with a base station (121). The coordinating user equipment (111) receives an indication from the base station (121) specifying multiple user equipments to include in the user-equipment-coordination set (702) and determines a first subset of the multiple user equipments to participate in the joint communication with the base station (121) (704). The coordinating user equipment (111) transmits one or more joint-communication-selection messages to the first subset of the multiple user equipments that directs the first subset of the multiple user equipments to participate in the joint communication with the base station (121) (706).

The present disclosure relates to uplink cooperative multi-User Equipment (UE) cooperative transmission such as Multiple-Input Multiple-Output (MIMO) transmission. Source data of a source UE that is to be transmitted via uplink cooperative transmission by multiple UEs, is transmitted to at least one cooperative UE over an SL. The source data is associated with an identifier for identifying the UE to the network equipment as a source of the source data. The multiple UEs transmit the source data and the identifier in an uplink direction to the network equipment. The network equipment receives the source data from the multiple UEs in a cooperative transmission such as cooperative MIMO transmission, and obtains the identifier for identifying the source UE as the source of the source data.

The present disclosure relates to uplink cooperative multi-User Equipment (UE) cooperative transmission such as Multiple-Input Multiple-Output (MIMO) transmission. Source data of a source UE that is to be transmitted via uplink cooperative transmission by multiple UEs, is transmitted to at least one cooperative UE over an SL. The source data is associated with an identifier for identifying the UE to the network equipment as a source of the source data. The multiple UEs transmit the source data and the identifier in an uplink direction to the network equipment. The network equipment receives the source data from the multiple UEs in a cooperative transmission such as cooperative MIMO transmission, and obtains the identifier for identifying the source UE as the source of the source data.

Methods and apparatuses are described for cooperation of two or more devices to improve the transmissions over a Uu interface. A source receives or transmits an indicator indicating a first mode of two modes of cooperation between the source apparatus and at least a first cooperating device. The two modes of cooperation includes a joint communication mode and a relay mode of cooperation. If the first mode is the joint communication mode, at least a portion of the data, intended for the intended recipient, is transmitted to at least the first cooperating device to be further transmitted by the first cooperating device to the intended recipient. A same or different portion of the data is transmitted to the intended recipient or to a second cooperating device to be further transmitted by the second cooperating device to the intended recipient.

Methods and apparatuses are described for cooperation of two or more devices to improve the transmissions over a Uu interface. A source receives or transmits an indicator indicating a first mode of two modes of cooperation between the source apparatus and at least a first cooperating device. The two modes of cooperation includes a joint communication mode and a relay mode of cooperation. If the first mode is the joint communication mode, at least a portion of the data, intended for the intended recipient, is transmitted to at least the first cooperating device to be further transmitted by the first cooperating device to the intended recipient. A same or different portion of the data is transmitted to the intended recipient or to a second cooperating device to be further transmitted by the second cooperating device to the intended recipient.

Aspects of the subject disclosure may include, for example, detecting, by a wireless communication device, a transmission, by a radio access network node, of an alert message, identifying contents of the alert message, determining that the wireless communication device is authorized to relay the contents of the alert message, generating alert information comprising the contents of the alert message, and transmitting a ProSe direct discovery message comprising the alert information. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, detecting, by a wireless communication device, a transmission, by a radio access network node, of an alert message, identifying contents of the alert message, determining that the wireless communication device is authorized to relay the contents of the alert message, generating alert information comprising the contents of the alert message, and transmitting a ProSe direct discovery message comprising the alert information. Other embodiments are disclosed.