SYSTEMS AND METHODS FOR DELAY MANAGEMENT IN DISTRIBUTED ANTENNA SYSTEM WITH DIRECT DIGITAL INTERFACE TO BASE STATION

摘要

A method for measuring downlink delay in a radio system includes applying a digital representation of a Gaussian pulse to a digital interface of the radio system; marking the digital representation of the Gaussian pulse with respect to a frame of digital data with a marker; propagating the Gaussian pulse in the radio system to an antenna, the radio system configured to convert the digital representation of the Gaussian pulse to a radio frequency signal transmitted at the antenna; measuring when the Gaussian pulse occurs in the radio frequency signal based on the marker; and determining a downlink propagation delay for the radio system between application of the digital representation of the Gaussian pulse at the digital interface and transmission of the radio frequency signal at the antenna.

主权项

1. A method for measuring downlink delay in a radio system, comprising:
applying a digital representation of a pulse to a digital interface of the radio system; marking the digital representation of the pulse with respect to a frame of digital data with a marker; propagating the pulse in the radio system to an antenna, the radio system configured to convert the digital representation of the pulse to a radio frequency signal transmitted at the antenna; measuring when the pulse occurs in the radio frequency signal based on the marker; and determining a downlink propagation delay for the radio system between application of the digital representation of the pulse at the digital interface and transmission of the radio frequency signal at the antenna.