Controller and transmission and reception method for radio communications in a transceiver for radio communications
First Claim
1. A controller in a transceiver for radio communications in which a same frequency is shared between a plurality of communications systems, comprising:
- a reception level measurement part which measures a level of a received signal;
a cyclic autocorrelation value calculation part which calculates a cyclic autocorrelation value of a first one of the communications systems from the received signal only when the measured level of the received signal is lower than a threshold; and
a data transmission authorization part which determines whether to authorize data transmission in a second one of the communications systems based on at least one of the measured level of the received signal and the calculated cyclic autocorrelation value of the first one of the communications systems.
1 Assignment
0 Petitions
Accused Products
Abstract
A controller in a transceiver for radio communications in which the same frequency is shared between multiple communications systems is disclosed that includes: a cyclic autocorrelation value calculation part configured to calculate the cyclic autocorrelation value of a first one of the communications systems from a received signal; and a data transmission authorization part configured to determine whether to authorize data transmission in a second one of the communications systems based on the calculated cyclic autocorrelation value of the first one of the communications systems.
88 Citations
9 Claims
-
1. A controller in a transceiver for radio communications in which a same frequency is shared between a plurality of communications systems, comprising:
-
a reception level measurement part which measures a level of a received signal; a cyclic autocorrelation value calculation part which calculates a cyclic autocorrelation value of a first one of the communications systems from the received signal only when the measured level of the received signal is lower than a threshold; and a data transmission authorization part which determines whether to authorize data transmission in a second one of the communications systems based on at least one of the measured level of the received signal and the calculated cyclic autocorrelation value of the first one of the communications systems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A radio communications transmission and reception method in a transceiver for radio communications in which a same frequency is shared between a plurality of communications systems, the radio communications transmission and reception method comprising:
-
measuring a level of a received signal; calculating a cyclic autocorrelation value of a first one of the communications systems from the received signal only when the measured level of the received signal is lower than a threshold; determining whether to authorize data transmission in a second one of the communications systems based on at least one of the measured level of the received signal and the calculated cyclic autocorrelation value of the first one of the communications systems; and performing the data transmission in the second one of the communication systems based on a determination that the data transmission should be authorized.
-
Specification