Method and apparatus for controlling operation of a portable or mobile battery-operated radios
First Claim
Patent Images
1. In a radio communications system where radio communications between radios over radio frequency communications channels are coordinated from a base station having a control channel transceiver and plural working channel transceivers, a method comprising the steps of:
- (a) establishing operating parameter values of one of the radios including radio transmit power at various performance levels corresponding to particular radio operating conditions and a minimum transmit power threshold and a maximum power threshold with corresponding maximum and minimum received signal strength values;
(b) the radio receiving from one of the base station transceivers a radio communication;
(c) determining at the radio a current condition including a strength of a signal received from the one base station between the maximum and minimum received signal strength values;
(d) in response to the received radio communication, the radio requesting a working channel over the control channel;
(e) in response to the request, the base station control channel transceiver temporarily assigns one of the working channel transceivers to the radio; and
(f) interpolating the transmit power between the maximum and minimum transmit power levels in accordance with the current received signal strength and then transmitting a message over a working radio channel associated with the assigned working channel transceiver at the adjusted transmit power.
1 Assignment
0 Petitions
Accused Products
Abstract
A base station-based communications system provides radio communication with battery-operated, portable radios, each radio including predetermined radio operating parameters corresponding to particular radio operating conditions. Each portable radio determines for itself one or more current radio operating condition(s), and based thereon, adjusts one or more radio operating parameters.
-
Citations
25 Claims
-
1. In a radio communications system where radio communications between radios over radio frequency communications channels are coordinated from a base station having a control channel transceiver and plural working channel transceivers, a method comprising the steps of:
-
(a) establishing operating parameter values of one of the radios including radio transmit power at various performance levels corresponding to particular radio operating conditions and a minimum transmit power threshold and a maximum power threshold with corresponding maximum and minimum received signal strength values; (b) the radio receiving from one of the base station transceivers a radio communication; (c) determining at the radio a current condition including a strength of a signal received from the one base station between the maximum and minimum received signal strength values; (d) in response to the received radio communication, the radio requesting a working channel over the control channel; (e) in response to the request, the base station control channel transceiver temporarily assigns one of the working channel transceivers to the radio; and (f) interpolating the transmit power between the maximum and minimum transmit power levels in accordance with the current received signal strength and then transmitting a message over a working radio channel associated with the assigned working channel transceiver at the adjusted transmit power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. In a radio communications system having a base station including a control channel and working channels for coordinating trunked radio communications between half-duplex, portable trunked radios, an open loop power control method for operating at least one of the half-duplex portable radios, comprising the steps of:
-
(a) the half-duplex radio determining for a message received over one of the channels a received signal strength and a received signal fidelity; (b) after receiving the message, the half-duplex radio requesting a working channel over the control channel; and (c) in response to a working channel assignment received over the control channel, the half-duplex radio changing the radio transmit power based on the received signal strength and received signal fidelity determined by the half-duplex radio and transmitting over the assigned working channel at the channel transmit power. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
-
19. In a trunked radio communications system including a base station with a control channel radio transceiver and working channel radio transceivers, each working channel radio transceiver having an associated working channel, the base station coordinating transmission trunked radio communications between portable, battery-operated, half-duplex radios, at least one portable, battery-operated, half-duplex radio comprising:
-
an antenna; a receiver connected to the antenna for receiving a message from one of the base station radio transceivers; electronic circuitry determining a signal fidelity and a signal strength of the received message; and a transmitter connected to the antenna for transmitting a channel request to the base station control channel radio transceiver for a working channel and transmitting a communication over an available working channel assigned by the control channel radio transceiver, wherein the electronic circuitry controls the receiver and transmitter so that the half-duplex radio only receives or transmits at one time and varies the transmit power of the transmitter based on the determined signal fidelity and the determined signal strength. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
Specification