Method and apparatus for directional radio communication
AssigneeNokia Telecommunications Oy
InventorsMarcos Katz, Matti Kiiski
Life of this patent
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Abstract
A method of directional radio communication in a mobile communication network between a first station and a second mobile station includes the following steps. Signals transmitted by the second station are received at the first station. A parameter representative of the distance between the second station and the first station is monitored. A signal beam is transmitted from the first station to the second station, the angular spread of the signal beam transmitted by the first station being dependent on the distance between the first and second stations.
Claims11
A method of directional radio communication in a mobile communication network between a first station and a second mobile station, said method comprising the steps of:
- receiving at said first station a signal transmitted by said second station;
- monitoring a parameter representative of a distance between the second station and the first station;
- and
- transmitting a signal beam from said first station to said second station, wherein an angular spread and a transmission power of the signal beam transmitted by the first station is dependent on the distance between the first and second stations as indicated by the parameter, such that when the distance is relatively large, the beam is narrower and transmitted at a higher power than when the distance is relatively small.
A method of directional radio communication in a cellular mobile communication network between a base station and a mobile station, said method comprising the steps of:
- receiving at said base station a signal transmitted by said mobile station;
- monitoring a parameter representative of a distance traveled by said signal between the mobile station and the base station;
- and
- selectively determining an angular spread and a transmission power of a radiation beam for transmitting a second signal from said base station to said mobile station in dependence on the distance represented by said parameter, wherein the angular spread of the beam transmitting said second signal is reduced, and the transmission power increased, for an increased distance.
A first station for directional radio communication in a mobile communication network with a second mobile station, said first station comprising:
- receiver means for receiving a signal transmitted by said second station;
- transmitter means for transmitting a signal beam from the first station to the second station;
- and
- control means for selectively determining an angular spread of the signal beam, said control means being arranged to control said transmitter means so that the angular spread and a transmission power of the signal beam transmitted by the first station is dependent on a parameter representative of a distance between the first and second stations, wherein when the distance is relatively large, the beam is narrower and transmitted at a higher power than when the distance is relatively small.
Dependencies are inferred from the claim text.