Method and system for transmit frequency hopping
First Claim
1. A method for receive frequency hopping on a mobile device, comprising:
- combining a receive scanning over a set of frequency channels with a scanning for a transmit frequency on the set of frequency channels for providing automated channel selection, wherein;
on the receive scanning,scanning the set of frequency channels;
determining whether a frequency is an active frequency; and
and wherein;
if a push-to-talk (PTT) is not initiated within a predetermined amount of time,determining whether the active frequency remains active during the predetermined amount of time, andif so,determining whether the active frequency corresponds to a private line of the mobile device;
else,repeating the scanning of the set of frequency channels.
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Accused Products
Abstract
A mobile device (110) and combined method (400/500) for frequency hopping is provided. The frequency hopping can combine a receive scanning (400) with a scanning (500) for a transmit frequency for providing automated channel selection. The transmit scanning can include determining whether a push to talk (PTT) is pressed (501), and selecting a transmit frequency from a set of frequency channels (130) based on a measured activity (150) on the set of frequencies. If the PTT (240) is within the hang-time (504), a frequency that is currently active during the hangtime can be selected, else, a frequency having a lowest activity count (506) can be selected for transmitting a communication in response to the PTT.
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Citations
12 Claims
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1. A method for receive frequency hopping on a mobile device, comprising:
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combining a receive scanning over a set of frequency channels with a scanning for a transmit frequency on the set of frequency channels for providing automated channel selection, wherein; on the receive scanning, scanning the set of frequency channels; determining whether a frequency is an active frequency; and and wherein; if a push-to-talk (PTT) is not initiated within a predetermined amount of time, determining whether the active frequency remains active during the predetermined amount of time, and if so, determining whether the active frequency corresponds to a private line of the mobile device; else, repeating the scanning of the set of frequency channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for transmit frequency hopping, comprising:
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determining whether a push to talk (PTT) is pressed; and selecting a transmit frequency from a set of frequencies based on a measured activity on the set of frequencies; determining whether the PTT is Dressed within a hang-time, and if the PTT is within the hang-time, selecting the frequency that is currently active during the hangtime, else selecting the frequency having a lowest activity count, for transmitting a communication in response to the PTT; determining whether the transmit frequency is an active frequency, and if so, repeating the scanning of the set of frequency channels; selecting the transmit frequency that has a next highest activity count, else, transmitting the communication on the transmit frequency until the PTT is released; upon a completion of the transmitting, repeating the scanning of the set of frequency channels; and updating activity levels for active frequencies.
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10. A mobile device for transmit frequency hopping, comprising:
a receiver for performing a receive scanning on a set of frequency channels; a transmitter coupled to the receiver for transmitting a communication on a frequency identified by the receiver; a processor coupled to the transmitter and receiver for combining the receive scanning with the transmitting for providing automated channel selection, wherein on detecting a push-to-talk (PTT), the processor selects a transmit frequency from the set of frequency channels based on a measured activity on the set of channels, a counter for assigning an activity level to active frequencies; a timer for determining whether a push to talk (PTT) is initiated within a hang-time; a comparator for selecting a transmit frequency based on an activity level measured during the receive scanning; and wherein the mobile device utilizes the transmit frequency hopping amongst a plurality of mobile devices which are in direct radio frequency communication without infrastructure support. - View Dependent Claims (11, 12)
Specification