1. A synchronization establishment circuit provided in a radio terminal and adapted to receive a beacon signal supplied from a remote device at a predetermined cycle and adapted to generate an internal signal in said radio terminal, comprising:
a first counter for counting a timer clock from when a first beacon signal is received until a second beacon signal is received;
a second counter for counting the timer clock from when said second beacon signal is received until a third beacon signal is received;
a register for storing a first count value of said first counter and a second count value of said second counter;
means for retrieving information about said predetermined cycle from said first beacon signal;
a first comparator for comparing said first count value of said first counter with said predetermined cycle;
a second comparator for comparing said second count value of said second counter with said first count value of said first counter; and
a controller for determining whether synchronization is established between said second beacon signal and said internal signal based on a comparison result of said first comparator, wherein after the synchronization is established, said controller allows said radio terminal to receivesend a signal fromto said remote device when a comparison result of said second comparator indicates that said second count value matches said first count value.
2. The synchronization establishment circuit according to claim 1, wherein said controller re-determines said-synchronization when an absolute value of a difference between said first count value stored in said register and said predetermined cycle is greater than a predetermined tolerance.
3. The synchronization establishment circuit according to claim 1, wherein said controller performs a correction processing for decreasing a cycle of said internal signal when timing precision of said beacon signal is poor.
4. The synchronization establishment circuit according to claim 1, wherein said remote device is a radio base station.
5. A synchronization establishment method for use with a radio terminal adapted to receive a beacon signal from a remote device at a predetermined cycle and adapted to generate an internal signal in said radio terminal, said method comprising:
counting a timer clock from when a first beacon signal is received until a second beacon signal is received, thereby providing a first count value;
counting the timer clock from when said second beacon signal is received until a third beacon signal is received, thereby providing a second count value;
retrieving information about said predetermined cycle from said first beacon signal;
comparing said first count value with said predetermined cycle;
comparing said second count value with said first count value;
determining whether synchronization is established between said second beacon signal and said internal signal based on a comparison result of said first count value with said predetermined cycle; and
allowing, after the synchronization is established, said radio terminal to receivesend a signal fromto said remote device when said second count value matches said first count value.
6. The synchronization establishment method according to claim 5, wherein said counting to said determining are re-executed when an absolute value of a difference between said first count value and said predetermined cycle is greater than a tolerance.
7. The synchronization establishment method according to claim 5, further comprising a correction processing for decreasing a cycle of said internal signal when timing precision of said beacon signal is poor.
8. The synchronization establishment method according to claim 5, wherein said remote device is a radio base station.
9. An apparatus provided in a radio terntinal and adapted to receive a beacon signal supplied from a remote device at a predetermined cycle and adapted to generate an internal signal in said radio terminal, comprising:
first means for counting a timer clock from when a first beacon signal is received until a second beacon signal is received;
second means for counting the timer clock from when said second beacon signal is received until a third beacon signal is received;
third means for storing a first count value of said first means and a second count value of said second means;
fourth means for retrieving information about said predetermined cycle from said first beacon signal;
fifth means for comparing said first count value with said predetermined cycle;
sixth means for comparing said second count value with said first count value; and
seventh means for determining whether synchronization is established between said second beacon signal and said internal signal based on a comparison result of said fifth means, wherein after the synchronization is established, said seventh means allows said radio terminal to receivesend a signal fromto said remote device when a comparison result of said sixth means indicates that said second count value matches said first count value.
10. The apparatus according to claim 9, wherein said seventh means re-determines said synchronization when an absolute value of a difference between said first count value stored in first means and said predetermined cycle is greater than a predetermined tolerance.
11. The apparatus according to claim 9, wherein said seventh means performs a correction processing for decreasing a cycle of said internal signal when timing precision of said beacon signal is poor.
12. The apparatus according to claim 9, wherein said remote device is transmitted from a radio base station.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for controlling an automatic transmission of a motor vehicle where a gear ratio (1, 2, 3, 4, 5, 6) is shifted, according to operating conditions, by way of at least one pre-determined shifting program (0, Eco, Normal, Sport, Mountain II, Warm-up, Inching) and corresponding specific shifting characteristic curves (HS45, RS43) and where, in relation to an actual operating condition of the vehicle, at least one special function (Curve Recognition KE, Rapid Drive Pedal Release FO, Spontaneous Delay Vehicle SVF, Drive Speed Control FGR, Drive Dynamic Control ESP) is activated to prevent a shift from an actual gear ratio to a target gear ratio, as requested by the at least one pre-determined shifting program, within a pre-determined operating range of the vehicle, the method comprising the steps of:
preventing a gear ratio shift in the transmission depending on applied specific values, related to actual operating conditions of the vehicle, as represented by a range of a motor speed (n_mot) of a main engine of the vehicle between a lower motor speed (n_mot_min) and an upper motor speed (n_mot_max); and
changing the range of the motor speed (n_mot) by multiplying the upper motor speed (n_mot_max) with at least one of the specific values that are dependent on the actual operating conditions of the vehicle.
2. The method according to claim 1, further comprising the step of changing the range of the motor speed (n_mot) by multiplying the lower motor speed (n_mot_min) with at least one of the specific values that are dependent on the operating conditions.
3. The method according to claim 1, further comprising the step of assigning each of the specific shifting characteristic curves to at least one specific value and at least one motor speed range such that the at least one special function (\u201cCurve Recognition KE\u201d, \u201cRapid Drive Pedal Release FO\u201d, \u201cSpontaneous Delay Vehicle SVF\u201d, \u201cDrive Speed Control FGR\u201d, \u201cDrive Dynamic Control ESP\u201d) prevents the gear ratio shift.
4. The method according to claim 1, further comprising the step of setting at least one of the upper motor speed (n_mot_max) and the lower motor speed (n_mot_min) to be constant through an operating range (\u221d) of a drive pedal.
5. The method according to claim 1, further comprising the step of setting at least one of the upper motor speed (n_mot_max) and the lower motor speed (n_mot_min) to be equal for different types of drivers.
6. The method according to claim 1, further comprising the step of changing at least one of the upper motor speed (n_mot_max) and the lower motor speed (n_mot_min) based upon an operating range (\u221d) of a drive pedal.
7. The method according to claim 1, further comprising the step of changing at least one of the upper motor speed (n_mot_max) and the lower motor speed (n_mot_min) in relation to a driving behavior of a driver.
8. The method according to claim 1, further comprising the step of selecting the range of the motor speed (n_mot) with the highest upper motor speed (n_mot_max) for a shift prevention, when an up-shift (HS) is requested and several special functions (Curve Recognition KE, Rapid Drive Pedal Release FO, Spontaneous Delay Vehicle SVF) are simultaneously activated.
9. The method according to claim 1, further comprising the step of selecting the range of the motor speed (n_mot) with the lowest lower motor speed (n_mot_min) for a shift prevention, when a down-shift (RS) is requested and several special functions (Curve Recognition KE, Rapid Drive Pedal Release FO, Spontaneous Delay Vehicle SVF) are simultaneously activated.
10. The method according to claim 1, further comprising the step of providing specific values for up-shifts (HS) as well as for down-shifts (RS).
11. The method according to claim 1, further comprising the step of varying specific values by at least one of based upon an operating range (\u221d) of a drive pedal and in relation to a driving behavior of a driver.
12. A method for controlling an automatic transmission of a motor vehicle where a gear ratio (1, 2, 3, 4, 5, 6) is shifted, according to operating conditions, by way of at least one pre-determined shifting program (0, Eco, Normal, Sport, Mountain II, Warm-up, Inching) and corresponding specific shifting characteristic curves (HS45, RS43) and where, in relation to a actual operating condition of a vehicle, at least one special function (Curve Recognition KE, Rapid Drive Pedal Release FO, Spontaneous Delay Vehicle SVF, Drive Speed Control FGR, Drive Dynamic Control ESP) is activated to prevent a shift from an actual gear ratio to a target gear ratio, as requested by the at least one pre-determined shifting program, within a pre-determined operating range of the vehicle, the method comprising the steps of:
adjusting operating points of the vehicle that are defined according to changing the shifting characteristic curves in relation to specific shifting values that are applied, depending on the operating conditions, such that operating points of the vehicle that are defined by the shifting characteristic curves, for which gear ratio shifts must be performed, being adjustable to the actual operating condition of the vehicle; and
adjusting the shifting characteristic curves depending on the specific shifting values in relation to a motor speed (n_mot) of the vehicle engine.
13. The method according to claim 12, further comprising the step of changing gradients of the shifting characteristic curves based upon an operating range (\u221d) of a drive pedal.
14. The method according to claim 12, further comprising the step changing gradients of the shifting characteristic curves in relation to a driving behavior of a driver.
15. The method according to claim 12, further comprising the step of simultaneously activating several selective special functions for a shift prevention that effects a greatest shifting point shift.