Method of tuning and compensating the received signal strength indicator in a radio telephone
AssigneeNokia Mobile Phones Ltd.
InventorsRisto Vaisanen, Aki Leppanen
Life of this patent
Estimating the term…
Abstract
In the method of tuning the received signal strength indicator the tuning results for selected operating conditions are stored in the microprocessor (10) memory. When the radio telephone (1) is in use, the received signal strength indicator (RSSI) reading is corrected with the tuning result in order to select the strongest antenna signal. The tuning is performed by connecting the tuning equipment (2)to the external interfaces (31, 32) of the radio telephone without opening it.
Claims16
A method for correcting a radio telephone's received signal strength indicator, the radio telephone having a logic section controlling the radio telephone's operation, comprising the steps of:
- i) connecting external tuning equipment to the radio telephone via at least two interfaces;
- ii) generating a test signal in the external tuning equipment;
- iii) transmitting the test signal to the radio telephone via at least a first of the two interfaces such that the radio telephone generates a test received signal strength indicator (RSSI) signal in response to the test signal;
- iv) transmitting from the radio telephone to the external tuning equipment the test RSSI signal via at least a second of the two interfaces;
- v) generating in the external tuning equipment a compensating value corresponding to the transmitted test RSSI signal;
- vi) transmitting the compensating value to the radio telephone logic section via at least the second interface;
- vii) storing the compensating value in a memory of the logic section of the radio telephone;
- and
- viii) compensating an actual RSSI signal by combining the actual RSSI signal with an appropriate compensating value.
An apparatus for correcting a radio telephone's received signal strength indicator signal, the radio telephone having a logic section for controlling the radio telephone's operation and a received signal strength indicator means, comprising:
- (a) tuning equipment external to the radio telephone, including:
- i) means for generating a test signal having an operating channel and a level:
- ii) means for transmitting the test signal to the radio telephone;
- iii) means for receiving a signal strength indicator signal (RSSI) generated by the received signal strength indicator means of the radio telephone in response to the transmitted test signal;
- iv) means for generating a compensating value in response to the received RSSI signal;
- and
- v) means for transmitting the compensating value to the radio telephone:
- and
- (b) signal processing equipment in the radio telephone logic section, including:
- i) means for receiving one of the test signal transmitted from the external tuning equipment and an actual signal, and transmitting it to the RSSI indicator means;
- ii) means for transmitting to the external tuning equipment an RSSI signal generated in response to a test signal;
- iii) means for storing the compensating value transmitted from the external tuning equipment;
- and
- iv) means for applying the compensating value to an RSSI signal generated in response to the actual signal.
Dependencies are inferred from the claim text.