Patent ID: 7123648
Filing Date: 2006-10-17
Classification: H04B

Abstract:
1. A radio relay apparatus comprising a first relay unit equipped outdoors, a second relay unit equipped in a blind area, and a digital transmission line for connecting said first and second relay units to each other, said first relay unit being an outdoor relay unit including a receiving antenna for receiving an analog relaying signal in a high-frequency band from a base station, an outdoor receiving section integrally united with said receiving antenna for setting said relaying signal in a desired frequency band, and converting said relaying signal to a digital signal, a transmitting antenna for transmitting said relaying signal toward said base station, and an outdoor transmitting section integrally united with said transmitting antenna for converting said digital signal transmitted through said digital transmission line to an analog signal in a high-frequency band, said second relay unit comprising an indoor receiving section including a transmitting antenna for transmitting a relaying radio frequency signal toward a mobile station, said indoor receiving section being integrally united with said transmitting antenna and provided for converting said digital signal transmitted through said digital transmission line to an analog signal in a high-frequency band, and an indoor transmitting section including a receiving antenna for receiving said relaying radio frequency signal from said mobile station, said indoor transmitting section being integrally united with said receiving antenna and provided for setting said analog relaying signal in a desired frequency band, and converting said analog relaying signal to a digital signal, a transmitting antenna for transmitting said relaying signal toward said outdoor transmitting section, wherein said outdoor receiving section of said outdoor relay unit comprises a first receiving part and a second receiving part, said outdoor transmitting section comprises a third receiving part and a fourth receiving part, said indoor receiving section of said indoor relay unit comprises a third transmitting part and a fourth transmitting part, said indoor transmitting section comprises a first transmitting part and a section transmitting part, said first receiving unit being connected to said receiving antenna, said second receiving unit leading to said digital transmission line and including a plurality of divider receiving parts diverged from said first receiving unit through a divider, said divider receiving parts of said second receiving unit being provided for selecting different frequency bands, said third receiving unit leading to said digital transmission line and including a plurality of divider receiving parts, said divider receiving parts being connected to said fourth transmitting part through a combiner, said fourth transmitting unit being connected to said transmitting antenna, said third receiving unit having a plurality of divider receiving parts diverged from said digital transmission line through a divider and being connected to said fourth receiving unit through a divider, said fourth receiving unit being connected to said transmitting antenna, said first transmitting unit being connected to said receiving antenna, and said second transmitting unit having a plurality of divider transmitting parts diverged from said digital transmission line through a divider, said divider transmitting parts being allowed respectively for selecting different frequency bands and leading to said digital transmission line.