Method for demand channel change for a radio telephone
First Claim
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1. A method of operating a radiotelephone to perform an on demand channel change in a cellular system including at least one central device, the radiotelephone including a transceiver, a manually actuated user input and a controller, the method comprising the steps of:
- generating a channel change request responsive to actuation of the manually actuated user input during an active call;
controlling the transceiver to transmit a channel change request to the central device responsive to the channel change request;
changing to a new channel identified by the central device if a first reply signal is received from the central device;
controlling the user interface to generate a display signal for a user confirming that a channel change is not available if a second reply signal is received from the central device; and
performing a channel scan if a channel scan request signal is received from the central device, wherein the step of performing a channel scan includes scanning a list of channels received from the central device and said step of scanning includes scanning those channels in the list.
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Abstract
A radiotelephone system (100) includes a radiotelephone (102) and a central device (104) that communicate via radio frequency (RF) signals. The radiotelephone (102) includes a user interface (114) which permits the user to request a channel change by the central device. A signal is communicated to the user if a channel change is denied. A channel scan can be conducted by the radiotelephone to identify a new channel.
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Citations
1 Claim
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1. A method of operating a radiotelephone to perform an on demand channel change in a cellular system including at least one central device, the radiotelephone including a transceiver, a manually actuated user input and a controller, the method comprising the steps of:
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generating a channel change request responsive to actuation of the manually actuated user input during an active call; controlling the transceiver to transmit a channel change request to the central device responsive to the channel change request; changing to a new channel identified by the central device if a first reply signal is received from the central device; controlling the user interface to generate a display signal for a user confirming that a channel change is not available if a second reply signal is received from the central device; and performing a channel scan if a channel scan request signal is received from the central device, wherein the step of performing a channel scan includes scanning a list of channels received from the central device and said step of scanning includes scanning those channels in the list.
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Specification
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Current AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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Original AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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InventorsMain, Douglas W., Azam, Zafarul
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Primary Examiner(s)CUMMING, WILLIAM D
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Application NumberUS08/594,544Time in Patent Office1,791 DaysField of Search455/550, 455/426, 455/464, 455/434, 455/517, 455/454, 455/425, 455/452, 455/455, 455/552, 455/450, 375/202US Class Current455/434CPC Class CodesH04W 36/06 Reselecting a communication...
