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US 6,188,890 B1Granted
Preventing wireless telecommunications calls from being disconnected due to low signal quality
AssigneeLucent Technologies Inc.
InventorShih-Jeh Chang
Life of this patent
Estimating the term…
Abstract
A technique for preventing the user of a wireless terminal from carrying a wireless terminal into the umbra of a fade is disclosed. In particular, some embodiments of the present invention notify the user that the user is in danger of entering the umbra and assist the user in navigating from the fade. An illustrative embodiment of the present invention comprises: creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal; and, when the first measurement of signal quality, SQ(n), is unsatisfactory, transmitting a first message to the wireless terminal to direct a user of the wireless terminal to move the wireless terminal in one direction.
Claims23
A method comprising:
- creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal:
- transmitting a first message to said wireless terminal to direct a user of said wireless terminal to move said wireless terminal in one direction when said first measurement of signal quality, SQ(n), is unsatisfactory;
- creating a second measurement of signal quality, SQ(n+1), of said signal received from said wireless terminal after transmitting said first message;
- and
- transmitting a second message to said wireless terminal to direct said user of said wireless terminal to move said wireless terminal further in said one direction when said second measurement of signal quality, SQ(n+1), is better than said first measurement of signal quality, SQ(n), and said second measurement of signal quality, SQ(n+1), is still unsatisfactory.
2 more elements
A method comprising:
- creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal;
- transmitting a first message to said wireless terminal to direct a user of said wireless terminal to move said wireless terminal in one direction when said first measurement of signal quality, SQ(n), is unsatisfactory;
- creating a second measurement of signal quality, SQ(n+1), of said signal received from said wireless terminal after transmitting said first message;
- and
- transmitting a second message to said wireless terminal to direct said user of said wireless terminal to move said wireless terminal opposite said one direction when said second measurement of signal quality, SQ(n+1), is worse than said first measurement of signal quality, SQ(n).
2 more elements
A method comprising:
- creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal;
- transmitting a first message to said wireless terminal to direct a user of said wireless terminal to move said wireless terminal in one direction when said first measurement of signal quality, SQ(n), is unsatisfactory;
- creating a second measurement of signal quality, SQ(n+1), of said signal received from said wireless terminal after transmitting said first message;
- and
- transmitting a second message to said wireless terminal indicating to said user of said wireless terminal that said second measurement of signal quality, SQ(n+1), is satisfactory when said first measurement of signal quality, SQ(n), is satisfactory.
2 more elements
An apparatus comprising:
- a threshold detector for creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal and a second measurement of signal quality, SQ(n+1), of said signal received from said wireless terminal;
- and
- a warning generator for generating a first message for said wireless terminal to direct a user of said wireless terminal to move said wireless terminal in one direction when said first measurement of signal quality, SQ(n), is unsatisfactory and for generating a second message for said wireless terminal to direct said user of said wireless terminal to move said wireless terminal further in said one direction when both said second measurement of signal quality, SQ(n+1), is better than said first measurement of signal quality, SQ(n), and said second measurement of signal quality, SQ(n+1), is unsatisfactory.
An apparatus comprising:
- a threshold detector for creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal and a second measurement of signal quality, SQ(n+1), of said signal received from said wireless terminal;
- and
- a warning generator for generating a first message for said wireless terminal to direct a user of said wireless terminal to move said wireless terminal in one direction when said first measurement of signal quality, SQ(n), is unsatisfactory and for generating a second message for said wireless terminal to direct said user of said wireless terminal to move said wireless terminal opposite said one direction when said second measurement of signal quality, SQ(n+1), is worse than said first measurement of signal quality, SQ(n).
An apparatus comprising:
- a threshold detector for creating a first measurement of signal quality, SQ(n), of a signal received from a wireless terminal and second measurement of signal quality, SQ(n+1), of said signal received from said wireless terminal;
- and
- a warning generator for generating a first message for said wireless terminal to direct a user of said wireless terminal to move said wireless terminal in one direction when said first measurement of signal quality, SQ(n), is unsatisfactory and for generating a second message for said wireless terminal indicating to said user of said wireless terminal to move said wireless terminal opposite said one direction when said second measurement of signal quality, SQ(n+1), is worse than said first measurement of signal quality, SQ(n).
A wireless terminal comprising:
- a wireless receiver for receiving a downlink signal;
- a terminal processor for extracting a first message and a second message from said downlink signal;
- and
- a warning generator for directing a user of said wireless terminal to move said wireless terminal in one direction when said first message is a control message directing said wireless terminal to direct said user of said wireless terminal to move said wireless terminal in said one direction, and for directing said user of said wireless terminal to move said wireless terminal opposite said one direction when said second message is a control message directing said wireless terminal to direct said user of said wireless terminal to move said wireless terminal opposite said one direction.
1 more element
Dependencies are inferred from the claim text.