Land-based wireless communications system having a scanned directional antenna
First Claim
1. A radio communications system, comprising:
- one or more remote stations, each of said remote stations comprising means for transmitting an identifying signal pattern and message information within a frequency band;
a base station for transmitting and receiving signals to and from said remote stations, said base station comprising at least one receiving antenna coupled to a base station receiver which monitors said frequency band, said at least one receive antenna having a directional pattern in a horizontal plane and means for scanning said directional pattern azimuthally;
means for filtering a signal received at said at least one receive antennameans for processing said receive signal after filtering by said filtering means, said processing means comprising means for decoding information which is included in said received signals;
means for monitoring a signal strength of said received signal; and
means for controlling said scanning means;
wherein said decoding means comprises means for decoding said identifying signal pattern, said system further comprising;
means for determining if said identifying signal pattern has been correctly decoded; and
means for decoding remaining portions of said received signal and forwarding a corresponding message to a network, if it is determined by said determining means that said identifying signal pattern has been correctly decoded;
said means for controlling said scanning means further comprising means for instructing said scanning means to move said directional pattern from one azimuthal position to another if said identifying signal pattern has not been correctly decoded.
2 Assignments
0 Petitions
Accused Products
Abstract
A radio communication system is disclosed which comprises a base station for transmitting and receiving signals to and from one or more remote stations. The base station is provided with at least one receive antenna coupled to a base station receiver. The receive antenna is provided with a directional pattern in a horizontal plane and a mechanism for steering the directional pattern azimuthly, until such time as a synchronization signal transmitted by a remote station located within the coverage area is received by the base station receiver. Upon detection of the synchronization signal, scanning of the receive antenna'"'"'s pattern is stopped until such time as message information can be obtained from the remote station and forwarded to a particular destination requested by the remote station. Upon receiving the information, the base station will resume scanning of the antenna, and the information will be forwarded to its requested destination.
82 Citations
40 Claims
-
1. A radio communications system, comprising:
-
one or more remote stations, each of said remote stations comprising means for transmitting an identifying signal pattern and message information within a frequency band; a base station for transmitting and receiving signals to and from said remote stations, said base station comprising at least one receiving antenna coupled to a base station receiver which monitors said frequency band, said at least one receive antenna having a directional pattern in a horizontal plane and means for scanning said directional pattern azimuthally; means for filtering a signal received at said at least one receive antenna means for processing said receive signal after filtering by said filtering means, said processing means comprising means for decoding information which is included in said received signals; means for monitoring a signal strength of said received signal; and means for controlling said scanning means;
wherein said decoding means comprises means for decoding said identifying signal pattern, said system further comprising;means for determining if said identifying signal pattern has been correctly decoded; and means for decoding remaining portions of said received signal and forwarding a corresponding message to a network, if it is determined by said determining means that said identifying signal pattern has been correctly decoded; said means for controlling said scanning means further comprising means for instructing said scanning means to move said directional pattern from one azimuthal position to another if said identifying signal pattern has not been correctly decoded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for communicating, comprising:
-
operating a base station to transmit and receive signals to and from one or more remote stations, said method comprising azimuthally scanning at least one receive antenna coupled to a receiver of the base station, wherein said at least one receive antenna has a directional pattern in a horizontal plane; operating selected ones of said remote stations to transmit an identifying signal pattern and message information within a frequency band monitored by said base station receiver; filtering a signal received at said at least one receive antenna; processing said received signal after filtering, said processing comprising decoding information which is included in said received signal; monitoring the signal strength of said received signal; and controlling said scanning; wherein said decoding comprises decoding said identifying signal pattern, said method further comprising; determining if said identifying signal pattern has been correctly decoded; decoding remaining portions of said received signal and forwarding a corresponding message to a network, if it is determined, during said determining, that said identifying signal pattern has been correctly decoded; and controlling said scanning to move said directional pattern from one azimuthal position to another if said identifying signal pattern has not been correctly decoded. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
-
Specification