Multi-mode radio telephone
First Claim
1. A radio telephone operative in two radio telephone systems in each of which transmission and reception occur in time slots, the radio telephone comprising first means for predicting the temporal overlap or coincidence of receive and transmit slots in the two systems and second means, responsive to the first means, for avoiding or reducing the interference consequent upon the predicted overlap or coincidence.
2 Assignments
0 Petitions
Accused Products
Abstract
A radio telephone (200) is operable in a cordless telephone system or in a cellular telephone system, in each of which reception and transmission occur in time slots. A microprocessor (210) of the telephone has an additional control entity (212) which predicts temporal overlap or coincidence of receive and transmit slots in the two systems. This information is used either to alter the time slots to avoid the predicted overlap or coincidence or to reduce the effect of interference, for example by muting certain slots or repeating signals in previous slot or slots.
93 Citations
10 Claims
- 1. A radio telephone operative in two radio telephone systems in each of which transmission and reception occur in time slots, the radio telephone comprising first means for predicting the temporal overlap or coincidence of receive and transmit slots in the two systems and second means, responsive to the first means, for avoiding or reducing the interference consequent upon the predicted overlap or coincidence.
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9. In combination, a micro-cellular telephone system, a macro-cellular telephone system, in each system transmission and reception occurring in time slots, and at least one radio telephone capable or operating in either system, the combination comprising first means for predicting the temporal overlap or coincidence of receive and transmit slots in the two systems and second means, responsive to the first means, for avoiding or reducing the interference consequent upon the predicted overlap or coincidence.
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10. A method of operating a radio telephone which is operative in two telephone systems in each of which transmission and reception occur in time slots, comprising predicting the temporal overlap or coincidence of receive and transmit slots in the two systems and using the prediction to avoid or reduce the interference consequent upon the predicted overlap or coincidence.
Specification