Patent ID: 11889333
Assignee: INNERTRON, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A distributed antenna monitoring apparatus used for a public safety radio network,
wherein the public safety radio network includes:
a plurality of distributed service antennas dispersed in each floor in a building;
a repeater for public safety radio network connected to a donor antenna through a coaxial cable, and configured to transmit a radio signal received from the donor antenna to the plurality of distributed service antennas and transmit radio signals received from the plurality of distributed service antennas to the donor antenna; and
a radio frequency distributor connected between the repeater and the plurality of distributed service antennas through coaxial cables, and configured to distribute the radio signal transmitted from the repeater to the plurality of distributed service antennas, and combine the radio signals received from the plurality of distributed service antennas and transmit the combined radio signal to the repeater,
the distributed antenna monitoring apparatus comprising:
a radio coupler configured to couple first monitoring radio signals to be transmitted to the plurality of distributed service antennas, and couple a second monitoring radio signal to be received from each of the plurality of distributed service antennas;
a master unit configured to transmit the first monitoring radio signals having a diagnostic packet included therein to the plurality of distributed service antennas through the radio coupler, and receive the second monitoring radio signal having a response packet included therein from each of the plurality of 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 plurality of distributed service antennas;
a plurality of remote units respectively connected to the plurality of distributed service antennas through radio links, and each configured to receive the first 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 second monitoring radio signal having the assembled response packet to the master unit; and
a monitoring server connected to the master unit though a communication network and configured to perform a statistical processing and visualization on information about the state of each of the plurality of distributed service antennas such that the information is monitored on an administrator radio terminal.