MOBILE WIRELESS TERMINAL, A METHOD OF MEASURING SIGNAL STRENGTH OF A RECEIVED SIGNAL, AND A METHOD OF SEARCHING FOR A BASE STATION
First Claim
1. A mobile wireless terminal comprising:
- a wireless receiving part configured to receive a wireless signal from a base station which belongs to a mobile communication system using a time-frequency conversion for baseband processing;
a received signal processing part that includes a time-frequency converting circuit and is configured to process the wireless signal from the base station which belongs to the mobile communication system;
a setting part configured to successively set, in the wireless receiving part, central frequencies within regions, wherein a frequency band that the mobile communication system uses is divided into the regions having a predetermined bandwidth; and
a received signal strength measuring part configured to measure signal strength of a received signal in the received signal processing part over the regions of the frequency band that the mobile communication system uses based on time-frequency conversion results from the time-frequency converting circuit, the time-frequency conversion results being obtained for the respective regions using the respective central frequencies set by the setting part.
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Accused Products
Abstract
A mobile wireless terminal includes a wireless receiving part configured to receive a wireless signal from a base station which belongs to a mobile communication system using a time-frequency conversion for baseband processing; a received signal processing part that includes a time-frequency converting circuit and is configured to process the wireless signal; a setting part configured to successively set central frequencies within regions, wherein a frequency band that the mobile communication system uses is divided into the regions having a predetermined bandwidth; and a received signal strength measuring part configured to measure signal strength of received signals over the regions of the frequency band that the mobile communication system uses based on time-frequency conversion results from the time-frequency converting circuit, the time-frequency conversion results being obtained for the respective regions using the respective central frequencies set by the setting part.
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Citations
15 Claims
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1. A mobile wireless terminal comprising:
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a wireless receiving part configured to receive a wireless signal from a base station which belongs to a mobile communication system using a time-frequency conversion for baseband processing; a received signal processing part that includes a time-frequency converting circuit and is configured to process the wireless signal from the base station which belongs to the mobile communication system; a setting part configured to successively set, in the wireless receiving part, central frequencies within regions, wherein a frequency band that the mobile communication system uses is divided into the regions having a predetermined bandwidth; and a received signal strength measuring part configured to measure signal strength of a received signal in the received signal processing part over the regions of the frequency band that the mobile communication system uses based on time-frequency conversion results from the time-frequency converting circuit, the time-frequency conversion results being obtained for the respective regions using the respective central frequencies set by the setting part. - View Dependent Claims (2)
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3. A mobile wireless terminal comprising:
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a wireless receiving part configured to receive a wireless signal from a base station which belongs to a first mobile communication system using a time-frequency conversion for baseband processing, or from a base station which belongs to a second mobile communication system not using the time-frequency conversion for the baseband processing; a first received signal processing part that includes a time-frequency converting circuit and is configured to process the wireless signal from the base station which belongs to the first mobile communication system; a second received signal processing part configured to process the wireless signal from the base station which belongs to the second mobile communication system; a setting part configured to successively set, in the wireless receiving part, central frequencies within regions, wherein a frequency band that the second mobile communication system uses is divided into the regions having a predetermined bandwidth; and a received signal strength measuring part configured to measure signal strength of a received signal in the first received signal processing part over the regions of the frequency band that the second mobile communication system uses based on time-frequency conversion results from the time-frequency converting circuit, the time-frequency conversion results being obtained for the respective regions using the respective central frequencies set by the setting part. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A mobile wireless terminal comprising:
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a wireless receiving part configured to receive a wireless signal from a base station which belongs to a mobile communication system using a time-frequency conversion for baseband processing; a received signal processing part that includes a time-frequency converting circuit and is configured to process the wireless signal from the base station which belongs to the mobile communication system; a first setting part configured to successively set, in the wireless receiving part, central frequencies within regions, wherein a frequency band that the mobile communication system uses is divided into the regions having a predetermined bandwidth; a detecting part configured to detect one or more null frequencies over the regions of the frequency band that the mobile communication system uses based on time-frequency conversion results from the time-frequency converting circuit, the time-frequency conversion results being obtained for the respective regions using the respective central frequencies set by the first setting part; a second setting part configured to set, in the wireless receiving part, the null frequency detected by the detecting part as the central frequency; and a received signal strength measuring part configured to detect a symbol including a sync signal appearing at a predetermined cycle in the wireless signal transmitted from the base station which belongs to the mobile communication system, and measure signal strength of a received signal in the received signal processing part based on a time-frequency conversion result from the time-frequency converting circuit, the time-frequency conversion result being obtained for the symbol including the sync signal using the null frequency set as the central frequency by the setting part. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification