Distributed antenna system using time division duplexing scheme

摘要

A communication system includes a master host unit that communicates wireless spectrum with a service provider interface using analog spectrum. Master host unit communicates digitized spectrum in N-bit words over a digital communication link. Master host unit converts between analog spectrum and N-bit words of digitized spectrum. Communication system includes hybrid expansion unit coupled to master host unit by digital communication link. Hybrid expansion unit communicates N-bit words of digitized spectrum with master host unit across digital communication link. Hybrid expansion unit converts between N-bit words of digitized spectrum and analog spectrum. Hybrid expansion unit communicates analog spectrum across analog communication link to analog remote antenna unit. Analog remote antenna unit communicates wireless signals using first antenna. Communication system further includes a switch in a data path between service provider interface and antenna. The switch selects between transmit path and receive path in response to switching control signal.

主权项

1. A distributed antenna system, comprising:
a first master host unit having circuitry, the first master host unit configured to communicate digital signals with a first service provider interface, wherein the first master host unit is further configured to communicate a first digitized spectrum in first N-bit words over a first digital communication link of a plurality of digital communication links coupled to the first master host unit; wherein the first master host unit is further configured to interface between the digital signals and the first N-bit words of digitized spectrum; a first hybrid expansion unit having circuitry, the first hybrid expansion unit communicatively coupled to the first master host unit by the first digital communication link of the plurality of digital communication links and configured to communicate the first N-bit words of digitized spectrum with the first master host unit across the first digital communication link, the first hybrid expansion unit further configured to convert between the first N-bit words of digitized spectrum and a first set of bands of analog spectrum, wherein the first hybrid expansion unit is further configured to communicate the first set of bands of analog spectrum across a first analog communication link coupled to the first hybrid expansion unit; a first analog remote antenna unit communicatively coupled to the first hybrid expansion unit by the first analog communication link and configured to communicate the first set of bands of analog spectrum across the first analog communication link, the first analog remote antenna unit further configured to communicate first wireless signals over a first air interface using a first antenna; a first switch positioned in a first data path between the first service provider interface and the first antenna, wherein the first switch is selected between a first transmit path and a first receive path in response to a first switching control signal; and wherein at least one of:
at least one of the first master host unit, the first hybrid expansion unit, and the first analog remote antenna unit is further configured to receive the switching control signal from an external source external to the distributed antenna system; andat least one of the first master host unit, the first hybrid expansion unit, and the first analog remote antenna unit further includes a first switch signal controller that generates the first switching control signal.