JP2009290826A - Intermittent reception system and intermittent reception method of mobile communication device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a deviation in start timing from a regular timing smaller even when temperature right before a quiescent period of intermittent reception is different from a room temperature. <P>SOLUTION: In a mobile communication device that performs intermittent reception control using an oscillator 1 oscillating a clock signal of oscillation frequency lower than the frequency of a main clock signal and a timer set value, a temperature detection unit 3 detects an ambient temperature of the oscillator 1. A correction value determination unit 4 determines a correction value corresponding to a frequency shift corresponding to the difference of the ambient temperature from the room temperature, the ambient temperature being detected by the temperature detection unit 3 when a non-quiescent period of the intermittent reception ends. A temperature compensation unit 5 corrects the timer set value with the correction value that the correction value determination unit 4 determines. For example, the correction value is added to the timer set value. An intermittent timer unit 2 counts a clock signal that the oscillator 1 outputs, and generates a timing signal indicating the start timing of the non-quiescent period of the intermittent reception when the counted value reaches the timer set value having been corrected. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an intermittent reception method and an intermittent reception method for setting an intermittent reception period in a mobile communication device such as a mobile phone.

  Mobile communication devices such as cellular phones perform intermittent reception in a standby state for the purpose of reducing power consumption and extending standby time. In intermittent reception, a signal from a base station is received for a predetermined period at a predetermined intermittent reception cycle. In a period in which no signal is received, power supply to a circuit that does not need to operate is stopped. Hereinafter, a state where power supply to a circuit that does not need to operate is referred to as a dormant state, and a period when the circuit is in a dormant state is referred to as a dormant period. The idle period corresponds to a non-reception period. A timer circuit (hereinafter referred to as an intermittent timer) is used to determine the start timing for shifting from the pause period to the reception period for receiving a signal. For example, when the value corresponding to the pause period is set in the register and the count value of the intermittent timer that counts the input clock signal becomes the value set in the register, the reception period is started. That is, the entire radio unit is activated.

  A high-speed main clock signal in the order of MHz is supplied to the radio unit including the receiving circuit in the mobile communication device. In order to generate the main clock signal, a temperature compensated crystal oscillator (TCXO) is used. Since TCXO has a high oscillation frequency, power consumption is large. Therefore, it is preferable to stop power supply to the main clock signal generation circuit including the TCXO during the suspension period.

  Therefore, in order to determine the start timing in the idle period, a system using a low frequency oscillator that oscillates a low frequency clock signal different from TCXO may be employed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 10-209952 (paragraphs 0033-0036, FIG. 4)

  However, when a low-frequency oscillator is used to determine the start timing for the purpose of reducing power consumption, etc., the start timing is the original start timing due to the frequency change based on the temperature change of the low frequency oscillator. There is a risk of deviating.

  FIG. 12 is a block diagram showing a general intermittent reception method of a mobile communication device. In the system shown in FIG. 12, when the reference frequency oscillator 402 by TCXO is activated, the automatic frequency control unit (AFC) 401 controls the frequency of the clock signal oscillated by the TCXO to be constant. In addition, what oscillates a clock signal of 26 MHz is shown as TCXO. As the TCXO, a voltage controlled temperature compensated crystal oscillator (VCTCXO: Voltage Controlled TCXO) is used.

  A clock signal output from the reference frequency oscillator 402 is input to a phase lock loop circuit (PLL) 403. The PLL 403 outputs the phase of a clock signal oscillated by an internal voltage controlled oscillator (VCO) in synchronization with the phase of the clock signal output from the reference frequency oscillator 402. A clock signal from the PLL 403 is input to the main timer unit 404. The main timer unit 404 divides the clock signal if necessary, and then supplies it to the radio unit including the receiving circuit 405 as the main clock signal.

  In the example shown in FIG. 12, an oscillator different from the reference frequency oscillator 402 is used to determine the intermittent reception period. As an oscillator, FIG. 12 shows a clock oscillator (RTC: Real Time Clock) 414 using a crystal oscillator that oscillates a clock signal of 32.768 kHz. Compared to the VCTCXO, the clock oscillator 414 is cheaper and the current consumption of the clock oscillator 414 is small. For example, the idle period setting unit 413 measures the oscillation frequency of the clock signal oscillated by the clock oscillator 414 and calculates a count value when the clock signal having the measured oscillation frequency is counted during the idle period. Then, the calculated count value is output as a timer set value. That is, the number that the intermittent timer unit 410 should count the clock signal from the clock oscillator 414 is output as the timer set value.

  When the reference frequency oscillator 402 is configured to stop during the idle period, the start timing must be determined based on the clock signal oscillated by the clock oscillator 414, but the frequency accuracy of the clock oscillator 414 is not high. Therefore, there is a possibility that a phase shift in which the activation timing deviates from the original activation timing occurs. Therefore, a signal output from the intermittent timer unit 410 is input to the phase difference detection circuit 407, and a main clock signal from the main timer unit 404 is also input to the phase difference detection circuit 407. When the reference frequency oscillator 402 is operating, the phase difference detection circuit 407 calculates the phase difference between the signal output from the intermittent timer unit 410 and the main clock signal from the main timer unit 404, for example, immediately before entering the pause period. It is detected and output to the timer offset calculation unit 408.

  The timer offset calculation unit 408 outputs to the adder 412 a value in a direction in which the phase difference detected by the phase difference detection circuit 407 is eliminated. The adder 412 adds the value set in the pause period setting unit 413 and the value output from the timer offset calculation unit 408 and outputs the result to the intermittent timer setting unit 411. The intermittent timer setting unit 411 sets a count value corresponding to the input value in the intermittent timer unit 410.

  The intermittent timer unit 410 counts the clock signal output from the clock oscillator 414 when entering the pause period, and outputs a start timing signal to the reception circuit start unit 409 when the count value reaches a set value. Then, the reception circuit activation unit 409 activates the reception circuit 409 according to the activation timing signal. At this time, the reference frequency oscillator 402 and the like are also activated. The reference frequency oscillator 402 stops operating at the start of the pause period. As described above, the intermittent timer unit 410 that counts the clock signal output from the clock oscillator 414 and the main microcomputer unit 404 are synchronized, and the reception circuit 405 and the like are activated at an accurate timing to enter the reception period. Is done.

As shown in FIG. 13, the clock oscillator 414 has a frequency deviation due to temperature. In general, the frequency deviation Δf / f0 of the oscillation frequency at the ambient temperature ΔT with respect to the oscillation frequency at the apex temperature Typ of about 25 ° C. is expressed by Δf / f0 = B * (Typ−ΔT) ² (where B is a second order). Temperature coefficient, f0 is design frequency). For example, in the timepiece oscillator 414 has a second order temperature coefficient of -0.04ppm / ℃ ² characteristic, in 85 ° C. which was higher 60 ° C. from the peak temperature of 25 ° C., arises a frequency deviation of -144Ppm.

  FIG. 14 is an explanatory diagram showing an example of the relationship between the pause time and temperature in the mobile communication device. As shown in FIG. 14, the temperature of the mobile communication device decreases as the suspension period elapses. FIG. 14 exemplifies that the apparatus temperature decreases as the time Δt elapses. When the temperature state immediately before entering the pause period is different from normal temperature (for example, 25 ° C.), the reception period is started at a timing different from the normal activation timing due to the frequency deviation of the oscillation frequency of the clock oscillator 414. There is a fear.

  Since the transmission circuit in the wireless unit has an automatic power control circuit (AGC), and the automatic power control circuit includes an amplifier, the transmission circuit generates heat when the transmission circuit is operating. For example, when the mobile communication device is in a transmission state until just before the start of the pause period, the ambient temperature of the clock oscillator 414 is higher than the normal temperature due to heat generated by the amplifier. In this state, when the intermittent timer unit 410 operates using the offset calculated by the timer offset calculation unit 408, the amplifier does not generate heat during the idle period and the ambient temperature of the clock oscillator 414 decreases. When a deviation occurs in the oscillation frequency of the oscillator 414, the start timing signal is output when it deviates from the time when the start timing signal is originally output.

  In addition, when the ambient temperature of the clock oscillator 414 immediately before the start of the suspension period is room temperature, but the ambient temperature increases with the movement of the user of the mobile communication device, the suspension period Since the ambient temperature of the clock oscillator 414 rises during this period, the oscillation frequency of the clock oscillator 414 also varies during the idle period, and the start timing signal is shifted when the start timing signal is originally output. Output.

  In a mobile communication device that performs transmission / reception using a CDMA (Code Division Multiple Access) method, when the activation timing of the reception period deviates from the original activation timing, the period until resynchronization due to correlation peak detection becomes long. The problem arises. Also, in mobile communication devices that perform transmission / reception using the TDMA (Time Division Multiple Access) method, the accuracy of burst reception time may be degraded.

  Therefore, the present invention determines the start timing of the non-pause period using an oscillator having a characteristic that generates a frequency deviation according to a change in the ambient temperature, even when the temperature immediately before the pause period is different from the normal temperature. An object of the present invention is to provide an intermittent reception method and an intermittent reception method for a mobile communication device that can further reduce the deviation of the activation timing from the normal timing.

  Note that even the invention described in Patent Document 1 can reduce the deviation of the activation timing from the normal timing. However, the invention described in Patent Document 1 aims to reduce the execution frequency of the correction process by limiting the correction time of the set value used when determining the start timing. We are monitoring. Therefore, the configuration of the invention described in Patent Document 1 is different from the configuration of the present invention described below.

  An intermittent reception method of a mobile communication device according to the present invention is an intermittent reception method of a mobile communication device that includes a radio unit that performs transmission / reception operations using a main clock signal created by a main timer unit and performs intermittent reception control. The clock signal is oscillated at an oscillation frequency lower than the signal frequency, and the oscillator that has the characteristic of generating a frequency deviation according to the fluctuation of the ambient temperature and the clock signal output from the oscillator are counted, and the count value becomes the timer setting An intermittent timer unit that generates a timing signal indicating the start timing of the non-pause period in intermittent reception, a temperature detection unit for detecting the ambient temperature of the oscillator, and when the non-pause period in intermittent reception ends A correction value determining unit that determines a correction value according to a frequency deviation corresponding to a difference from ambient temperature of the ambient temperature detected by the temperature detecting unit, and a correction value determining unit Further comprising a temperature compensation unit for correcting the timer set value determined correction value, characterized in.

  Another aspect of the mobile communication device intermittent reception method according to the present invention is a mobile communication device intermittent reception method that includes a wireless unit that performs transmission and reception using a main clock signal created by a main timer unit and performs intermittent reception control. The clock signal is oscillated at a lower oscillation frequency than the frequency of the main clock signal, and an oscillator having a characteristic that causes a frequency deviation according to the fluctuation of the ambient temperature, and the clock signal output from the oscillator are counted, and the count value is a timer. When the set value is reached, the timing of the intermittent timer unit that generates the timing signal indicating the start timing of the non-pause period in intermittent reception, and the timing of the main clock signal generated by the main timer unit and the timing signal generated by the intermittent timer unit A phase difference detection unit that detects a phase difference; a timer setting value correction unit that corrects a timer setting value with a value corresponding to the phase difference detected by the phase difference detection unit; The temperature detection unit for detecting the ambient temperature of the vibrator and the phase of the timing signal input to the phase difference detection unit according to the ambient temperature detected by the temperature detection unit when the pause period in intermittent reception ends. And a phase correction unit for correction.

  According to another aspect of the present invention, the intermittent reception method of the mobile communication device is an intermittent reception method of the mobile communication device that includes the wireless unit that performs transmission and reception using the main clock signal generated by the main timer unit and performs intermittent reception control. An oscillator having a characteristic that oscillates a clock signal at an oscillation frequency lower than the frequency of the main clock signal and causes a frequency deviation in accordance with a change in ambient temperature, and counts the clock signal output from the oscillator. When the timer setting value is reached, an intermittent timer unit that generates a timing signal indicating the start timing of the non-pause period in intermittent reception, a main clock signal created by the main timer unit, and a timing signal generated by the intermittent timer unit A phase difference detection unit that detects a phase difference, a heat generation amount calculation unit that calculates a heat generation amount of a transmission circuit in a wireless unit in a non-pause period, and a heat generation amount calculation The temperature estimation unit that estimates the ambient temperature of the oscillator based on the calorific value calculated by the unit, and the frequency deviation according to the ambient temperature estimated by the temperature estimation unit, according to the phase difference detected by the phase difference detection unit A phase difference correction unit that corrects a value and a timer setting value correction unit that corrects a timer set value with a value corresponding to the phase difference corrected by the phase difference correction unit are provided.

  An intermittent reception method for a mobile communication device according to the present invention includes a radio unit that performs transmission and reception operations using a main clock signal created by a main timer unit, oscillates a clock signal at an oscillation frequency lower than the frequency of the main clock signal, and An intermittent reception method executed in a mobile communication device that performs intermittent reception control using an oscillator having a characteristic that generates a frequency deviation according to temperature fluctuations and a timer set value, and detects the ambient temperature of the oscillator and intermittently A clock output by the oscillator that determines the correction value according to the frequency deviation corresponding to the difference from the ambient temperature of the ambient temperature detected when the non-pause period in reception ends, corrects the timer setting value with the determined correction value, Counts the signal and generates a timing signal indicating the start timing of the non-pause period in intermittent reception when the count value reaches the corrected timer set value And wherein the door.

  According to another aspect of the present invention, there is provided an intermittent reception method for a mobile communication device including a radio unit that performs transmission and reception using a main clock signal generated by a main timer unit, and a clock signal having an oscillation frequency lower than the frequency of the main clock signal. Is an intermittent reception method executed by a mobile communication device that performs intermittent reception control using an oscillator having a characteristic of generating a frequency deviation according to a change in ambient temperature and a timer set value, wherein the main clock signal and timing are Detects the phase difference with the signal, corrects the timer setting value with a value corresponding to the phase difference, counts the clock signal output from the oscillator, and when the count value reaches the timer setting value, non-pause in intermittent reception Generates a timing signal indicating the start timing of the period, detects the ambient temperature of the oscillator, and responds to the ambient temperature detected when the pause period in intermittent reception ends , And correcting the phase of the timing signal.

  According to still another aspect of the present invention, there is provided an intermittent reception method for a mobile communication device including a wireless unit that performs transmission / reception using a main clock signal generated by a main timer unit, and clocks at an oscillation frequency lower than the frequency of the main clock signal. An intermittent reception method of a mobile communication device executed by a mobile communication device that performs intermittent reception control using an oscillator having a characteristic that oscillates a signal and generates a frequency deviation according to a change in ambient temperature and a timer set value, The phase difference between the main clock signal and the timing signal is detected, the amount of heat generated by the transmitter circuit in the radio unit during the non-pause period is calculated, the ambient temperature of the oscillator is estimated based on the calculated amount of heat, and the estimated ambient temperature Using the frequency deviation according to the value, the value corresponding to the phase difference is corrected, the timer setting value is corrected with the value corresponding to the corrected phase difference, and the clock signal output from the oscillator is counted. , The count value when it becomes the timer set value, characterized by generating a timing signal indicating the start timing of the non-idle period in the intermittent reception.

  According to the present invention, even when the temperature immediately before the suspension period is different from the normal temperature, it is possible to further reduce the deviation of the activation timing from the normal timing.

  Even when the temperature immediately before or immediately after the suspension period is different from the normal temperature, the main clock signal generated by the main timer and the operation of the intermittent timer unit can be quickly synchronized.

  FIG. 1 is a block diagram showing a basic configuration of an intermittent reception method of a mobile communication device according to the present invention. FIG. 2 is a flowchart showing processing executed in the intermittent reception method shown in FIG. The configuration shown in FIG. 1 includes a radio unit 32 that performs transmission / reception using the main clock signal created by the main timer unit 31, and oscillates the clock signal at an oscillation frequency lower than the frequency of the main clock signal to change the ambient temperature. In the mobile communication device that performs intermittent reception control using the oscillator 1 (corresponding to the clock oscillator 114 in FIGS. 7 and 8) having a characteristic that generates a frequency deviation according to the frequency and the timer set value, the temperature detection unit 3 includes: The ambient temperature of the oscillator 1 is detected (step S11). The correction value determining unit 4 (corresponding to the LUT in FIG. 7 and the frequency deviation calculating unit 117 in FIG. 8) is the difference between the ambient temperature detected by the temperature detecting unit 3 and the normal temperature when the non-pause period in intermittent reception ends. A correction value corresponding to the frequency deviation corresponding to is determined (step S12). The temperature compensation unit 5 (corresponding to the adder 112 in FIGS. 7 and 8) corrects the timer set value with the correction value determined by the correction value determination unit 4 (step S13). For example, the correction value is added to the timer set value. The intermittent timer unit 2 counts the clock signal output from the oscillator 1 and generates a timing signal indicating the start timing of the non-pause period in intermittent reception when the count value reaches the corrected timer set value (step) S14).

  FIG. 3 is a block diagram showing a basic configuration of an intermittent reception method of a mobile communication device according to another aspect of the present invention. FIG. 4 is a flowchart showing processing executed in the intermittent reception method shown in FIG. The configuration shown in FIG. 3 includes a radio unit 32 that performs transmission / reception using the main clock signal created by the main timer unit 31, oscillates the clock signal at an oscillation frequency lower than the frequency of the main clock signal, and changes in ambient temperature. In the mobile communication device that performs intermittent reception control using the oscillator 1 (corresponding to the clock oscillator 214 in FIG. 9) having a characteristic that generates a frequency deviation according to the frequency and the timer set value, the phase difference detection unit 6 includes a main clock. A phase difference between the signal and the timing signal is detected (step S21). The timer set value correcting unit 7 (corresponding to the timer offset calculating unit 208 and the adder 212 in FIG. 9) corrects the timer set value with a value corresponding to the phase difference detected by the phase difference detecting unit 6 (step S22). The intermittent timer unit 2 counts the clock signal output from the oscillator 1 and generates a timing signal indicating the start timing of the non-pause period in intermittent reception when the count value reaches the timer set value (step S23). The temperature detection unit 3 detects the ambient temperature of the oscillator 1 (step S24). The phase correction unit 8 (corresponding to the LUT 216 and the adder 206 in FIG. 9) corrects the phase of the timing signal according to the ambient temperature detected by the temperature detection unit 3 when the pause period in intermittent reception ends ( Step S25).

  FIG. 5 is a block diagram showing a basic configuration of an intermittent reception method of a mobile communication device according to still another aspect of the present invention. FIG. 6 is a flowchart showing processing executed by the intermittent reception method shown in FIG. The configuration shown in FIG. 5 includes a radio unit 32 that performs transmission / reception using the main clock signal created by the main timer unit 31, oscillates the clock signal at an oscillation frequency lower than the frequency of the main clock signal, and changes in ambient temperature. In the mobile communication apparatus that performs intermittent reception control using the oscillator 1 having the characteristic of generating a frequency deviation according to the frequency (corresponding to the clock oscillator 314 in FIG. 10) and the timer set value, the phase difference detection unit 6 includes the main clock. A phase difference between the signal and the timing signal is detected (step S31). The heat generation amount detection unit 21 (corresponding to the PA heat generation amount calculation unit 318 in FIG. 10) calculates the heat generation amount of the transmission circuit in the wireless unit 1 during the non-pause period (step S32). The temperature estimation unit 22 (corresponding to the PA heat generation amount calculation unit 318 in FIG. 10) estimates the ambient temperature of the oscillator 1 based on the heat generation amount calculated by the heat generation amount detection unit 21 (step S33). The phase difference correction unit 9 (corresponding to the LUT 316 and the adder 306 in FIG. 10) uses the frequency deviation according to the ambient temperature estimated by the temperature estimation unit 22 to obtain a value corresponding to the phase difference by the phase difference detection unit 6. Correction is performed (step S34). Then, the timer set value correcting unit 7 (corresponding to the timer offset calculating unit 308 and the adder 312 in FIG. 10) corrects the timer set value with a value corresponding to the corrected phase difference (step S35). The intermittent timer unit 2 counts the clock signal output from the oscillator 1 and generates a timing signal indicating the start timing of the non-pause period in intermittent reception when the count value reaches the timer set value (step S36).

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1. FIG.
FIG. 7 is a block diagram showing a first embodiment (embodiment 1) of an intermittent reception method of a mobile communication device according to the present invention. In the intermittent reception method shown in FIG. 7, when the reference frequency oscillator 102 by TCXO is activated, the AFC 101 controls the frequency of the clock signal oscillated by the TCXO to be constant. In addition, what oscillates a clock signal of 26 MHz is shown as TCXO. Moreover, VCTCXO is used as TCXO.

  A clock signal output from the reference frequency oscillator 102 is input to the PLL 103. The PLL 103 outputs the clock signal oscillated by the internal VCO in synchronization with the phase of the clock signal output from the reference frequency oscillator 102. A clock signal from the PLL 103 is input to the main timer unit 104. The main timer unit 104 divides the clock signal if necessary, and then supplies it to the radio unit including the transmission circuit (not shown) and the reception circuit 105 as the main clock signal.

  In order to determine the intermittent reception period, a clock oscillator (RTC) 114 which is an oscillator different from the reference frequency oscillator 102 is used. The RTC 114 oscillates a clock signal of 32.768 kHz. The idle period setting unit 113 measures, for example, the oscillation frequency of the clock signal oscillated by the RTC 114, and calculates a count value when counting the clock signal having the measured oscillation frequency during the idle period. Then, the calculated count value is output as a timer set value. That is, the number that the intermittent timer unit 110 should count the clock signal from the RTC 114 is output as the timer set value.

  A signal output from the intermittent timer unit 110 is input to the phase difference detection circuit 107, and a main clock signal from the main timer unit 104 is also input to the phase difference detection circuit 107. When the reference frequency oscillator 102 is operating, the phase difference detection circuit 107 calculates the phase difference between the signal output from the intermittent timer unit 110 and the main clock signal from the main timer unit 104, for example, immediately before entering the pause period. It is detected and output to the timer offset calculator 108.

  Instead of inputting the signal output from the intermittent timer unit 110 to the phase difference detection circuit 107, the clock signal from the RTC 114 may be input to the phase difference detection circuit 107. In such a configuration, the phase difference detection circuit 107 detects the phase difference between the clock signal from the RTC 114 and the main clock signal from the main timer unit 104.

  The timer offset calculation unit 108 outputs to the adder 112 a value in a direction that eliminates the phase difference detected by the phase difference detection circuit 107. The adder 112 adds the value set in the pause period setting unit 113 and the value output from the timer offset calculation unit 108 and outputs the result to the intermittent timer setting unit 111. The intermittent timer setting unit 111 sets a count value corresponding to the input value in the intermittent timer unit 110.

  The intermittent timer unit 110 counts the clock signal output from the RTC 114 when the pause period starts, and outputs a start timing signal to the reception circuit start unit 109 when the count value reaches a set value. Then, the reception circuit activation unit 109 activates the reception circuit 109 according to the activation timing signal. At this time, the reference frequency oscillator 102 and the like are also activated. The reference frequency oscillator 102 stops operating at the start of the pause period. As described above, the intermittent timer unit 110 that counts the clock signal output from the RTC 114 and the main microcomputer unit 104 are synchronized, and the reception circuit 105 and the like are activated at an accurate timing to enter the reception period.

  The configuration described above is the same as the configuration shown in FIG. 12, but the specific configuration and operation of the first embodiment will be described below. In the first embodiment, a thermometer 115 and an LUT (Look Up Table) 116 are provided. The thermometer 115 is built in the mobile communication device, detects the temperature of the mobile communication device (specifically, the ambient temperature of the RTC 114), and outputs a signal indicating the detected temperature to the LUT 116.

  The LUT 116 includes a count value when the clock signal of the oscillation frequency of the RTC 114 at various temperatures is counted in the normal pause period, and a count value when the clock signal of the oscillation frequency of the RTC 114 at normal temperature is counted during the regular pause period. The difference value is set as a correction value. The various temperatures are, for example, temperatures every 1 ° C. as an example of the operation guarantee temperature of the mobile communication device (as an example, −20 to + 70 ° C.).

  The LUT 116 outputs a correction value corresponding to the temperature indicated by the signal from the thermometer 115. In the first embodiment, the LUT 116 outputs to the adder 112 immediately before the rest period, that is, when the non-rest period ends. Control is performed to output a correction value. The entity that controls the LUT 116 is, for example, the intermittent timer unit 110.

  The adder 112 adds the value set in the pause period setting unit 113 and the value output from the timer offset calculation unit 108, adds the correction value output from the LUT 116, and adds the added value to the intermittent timer setting unit. To 111.

  When the temperature state immediately before entering the suspension period is higher than the normal temperature and the thermometer 115 and the LUT 116 are not present, the start timing of the non-pause period is determined based on the oscillation frequency of the RTC 114 at the high temperature. Therefore, when the ambient temperature falls to room temperature during the suspension period, the reception period may start at a timing different from the normal activation timing. However, in this embodiment, since the activation timing of the non-pause period is determined based on the oscillation frequency of the RTC 114 at room temperature, the deviation of the activation timing determined by the intermittent timer unit 110 from the normal activation timing can be reduced. it can.

  In the first embodiment, the correction value output from the LUT 116 is further added to the addition value between the value set in the pause period setting unit 113 and the value output from the timer offset calculation unit 108. Although configured, the correction value output from the LUT 116 may be multiplied by the value obtained by adding the value set in the suspension period setting unit 113 and the value output from the timer offset calculation unit 108. When configured to multiply, correction coefficients for timer set values corresponding to various temperatures are set in the LUT 116.

Embodiment 2. FIG.
FIG. 8 is a block diagram showing a second embodiment (embodiment 2) of the intermittent reception method of the mobile communication device according to the present invention. In the intermittent reception method shown in FIG. 8, a frequency deviation calculation unit 117 is provided instead of the LUT 16 shown in FIG. Other configurations are the same as those in the first embodiment shown in FIG.

  The frequency deviation calculation unit 117 outputs a correction value corresponding to the temperature to the adder 112 immediately before the rest period, that is, when the non-rest period ends. The frequency deviation calculation unit 117 performs normal operation on the count value when the clock signal having the oscillation frequency of the RTC 114 at the temperature indicated by the signal output from the thermometer 115 is counted in the normal pause period and the clock signal having the oscillation frequency of the RTC 114 at room temperature. The value of the difference from the count value when counted in the pause period is output as a correction value.

  Therefore, the adder 112 inputs a correction value having the same value as the correction value input from the LUT 116 in the first embodiment, and the same effect as in the case of the first embodiment can be obtained.

Embodiment 3. FIG.
FIG. 9 is a block diagram showing a third embodiment (embodiment 3) of the intermittent reception method of the mobile communication device according to the present invention. In the intermittent reception method shown in FIG. 9, when the reference frequency oscillator 202 by TCXO is activated, the AFC 201 controls the frequency of the clock signal oscillated by the TCXO to be constant. In addition, what oscillates a clock signal of 26 MHz is shown as TCXO. Moreover, VCTCXO is used as TCXO.

  A clock signal output from the reference frequency oscillator 202 is input to the PLL 203. The PLL 203 synchronizes the phase of the clock signal oscillated by the internal VCO with the phase of the clock signal output from the reference frequency oscillator 202 and outputs the clock signal. A clock signal from the PLL 203 is input to the main timer unit 204. The main timer unit 204 divides the clock signal if necessary, and supplies it to the radio unit including the transmission circuit (not shown) and the reception circuit 205 as the main clock signal.

  In order to determine the intermittent reception period, a clock oscillator (RTC) 214 which is an oscillator different from the reference frequency oscillator 202 is used. The RTC 214 oscillates a clock signal of 32.768 kHz. The idle period setting unit 213 measures, for example, the oscillation frequency of the clock signal oscillated by the RTC 214, and calculates a count value when counting the clock signal having the measured oscillation frequency during the idle period. Then, the calculated count value is output as a timer set value. That is, the number that the intermittent timer unit 210 should count the clock signal from the RTC 214 is output as the timer set value.

  A signal output from the intermittent timer unit 210 is input to the phase difference detection circuit 207, and a main clock signal from the main timer unit 204 is also input to the phase difference detection circuit 207. When the reference frequency oscillator 202 is operating, the phase difference detection circuit 207 calculates the phase difference between the signal output from the intermittent timer unit 210 and the main clock signal from the main timer unit 204, for example, immediately before entering the pause period. It is detected and output to the timer offset calculation unit 208.

  Instead of inputting the signal output from the intermittent timer unit 210 to the phase difference detection circuit 207, the clock signal from the RTC 214 may be input to the phase difference detection circuit 207. In such a configuration, the phase difference detection circuit 207 detects the phase difference between the clock signal from the RTC 214 and the main clock signal from the main timer unit 104.

  The timer offset calculation unit 208 outputs a value in a direction that eliminates the phase difference detected by the phase difference detection circuit 207 to the adder 212. The adder 212 adds the value set in the pause period setting unit 213 and the value output from the timer offset calculation unit 208 and outputs the result to the intermittent timer setting unit 211. The intermittent timer setting unit 211 sets a count value corresponding to the input value in the intermittent timer unit 210.

  The intermittent timer unit 210 counts the clock signal output from the RTC 214 when entering the idle period, and outputs the activation timing signal to the reception circuit activation unit 209 when the count value reaches the set value. Then, the reception circuit activation unit 209 activates the reception circuit 209 according to the activation timing signal. At this time, the reference frequency oscillator 202 and the like are also activated. The reference frequency oscillator 202 stops operating at the start of the pause period. As described above, the intermittent timer unit 210 that counts the clock signal output from the RTC 214 and the main microcomputer unit 204 are synchronized, and the receiving circuit 205 and the like are activated at an accurate timing to enter the reception period.

  Note that FIG. 9 clearly shows a circuit portion 220 that is not supplied with power during the idle period but supplied only during the non-interactive period.

  The configuration described above is the same as the configuration shown in FIG. 12, but the specific configuration and operation in the third embodiment will be described below. In the third embodiment, a thermometer 215, an LUT 216, and an adder 206 are provided. The thermometer 215 is built in the mobile communication device and outputs a signal indicating the detected temperature to the LUT 216. The thermometer 215 is installed at a position away from the radio unit, but is preferably installed in the vicinity of the RTC 214 in order to detect the ambient temperature of the RTC 214.

  The LUT 216 includes a count value when the clock signal of the oscillation frequency of the RTC 214 at various temperatures is counted in the normal pause period, and a count value when the clock signal of the oscillation frequency of the RTC 214 at normal temperature is counted during the regular pause period. The difference value is set as a correction value. The various temperatures are, for example, temperatures every 1 ° C. as an example of the operation guarantee temperature of the mobile communication device (as an example, −20 to + 70 ° C.).

  The LUT 216 outputs a correction value corresponding to the temperature indicated by the signal from the thermometer 215. In the third embodiment, the LUT 216 outputs to the adder 206 immediately before the suspension period expires, that is, when the suspension period ends. Control is performed to output a correction value. The entity that controls the LUT 216 is, for example, the intermittent timer unit 210.

  When the non-pause period is started, the adder 206 corrects the phase of the activation timing signal output from the intermittent timer unit 210. That is, the start timing signal is shifted by the correction value. Note that when the ambient temperature of the RTC 214 deviates from the apex temperature, the oscillation frequency decreases (see FIG. 13). Therefore, the activation timing determined by the intermittent timer unit 210 when the ambient temperature is deviated from the vertex temperature is delayed from the original activation timing. Therefore, in the present embodiment, the intermittent timer unit 210 outputs a signal to the adder 206 before the determined activation timing. With such a configuration, even when the activation timing determined by the intermittent timer unit 210 is delayed from the original activation timing, the phase difference detection circuit 207 is shifted to a timing closer to the original activation timing by shifting the phase by the correction value. The start timing signal is input to

  If the ambient temperature of the RTC 214 immediately before the start of the pause period is room temperature, but the ambient temperature increases with the movement of the user of the mobile communication device, etc., the ambient temperature is based on the oscillation frequency of the RTC 214 at room temperature. Since the activation timing in the non-pause period is determined, the activation timing signal is output at a time deviated from the original output timing signal. In this embodiment, since the start timing determined by the intermittent timer unit 210 is corrected according to the ambient temperature, the start timing signal is input to the phase difference detection circuit 207 at a time closer to the time when the non-pause period starts. This makes it easier to synchronize with the main clock signal created by the main timer unit 404.

  This embodiment may be used in combination with the first embodiment or the second embodiment.

Embodiment 4 FIG.
FIG. 10 is a block diagram showing a fourth embodiment (third embodiment) of the intermittent reception method of the mobile communication device according to the present invention. In the intermittent reception method shown in FIG. 10, when the reference frequency oscillator 302 by TCXO is activated, the AFC 301 controls the frequency of the clock signal oscillated by the TCXO to be constant. In addition, what oscillates a clock signal of 26 MHz is shown as TCXO. Moreover, VCTCXO is used as TCXO.

  A clock signal output from the reference frequency oscillator 302 is input to the PLL 303. The PLL 303 synchronizes the phase of the clock signal oscillated by the internal VCO with the phase of the clock signal output from the reference frequency oscillator 302 and outputs the clock signal. A clock signal from the PLL 303 is input to the main timer unit 304. The main timer unit 304 divides the clock signal if necessary, and then supplies it to the radio unit including the receiving circuit 305 as the main clock signal.

  In order to determine the intermittent reception period, a clock oscillator (RTC) 314 which is an oscillator different from the reference frequency oscillator 302 is used. The RTC 314 oscillates a clock signal of 32.768 kHz. For example, the idle period setting unit 313 measures the oscillation frequency of the clock signal oscillated by the RTC 314, and calculates a count value when the clock signal having the measured oscillation frequency is counted during the idle period. Then, the calculated count value is output as a timer set value. That is, the number that the intermittent timer unit 310 should count the clock signal from the RTC 314 is output as the timer set value.

  A signal output from the intermittent timer unit 310 is input to the phase difference detection circuit 307, and a main clock signal from the main timer unit 304 is also input to the phase difference detection circuit 307. When the reference frequency oscillator 302 is operating, the phase difference detection circuit 307 calculates the phase difference between the signal output from the intermittent timer unit 310 and the main clock signal from the main timer unit 304, for example, immediately before entering the pause period. It is detected and output to the timer offset calculation unit 308.

  Instead of inputting the signal output from the intermittent timer unit 310 to the phase difference detection circuit 307, the clock signal from the RTC 314 may be input to the phase difference detection circuit 307. In such a configuration, the phase difference detection circuit 307 detects the phase difference between the clock signal from the RTC 314 and the main clock signal from the main timer unit 304.

  The timer offset calculation unit 308 outputs a value in a direction that eliminates the phase difference detected by the phase difference detection circuit 307 to the adder 312. The adder 312 adds the value set in the pause period setting unit 313 and the value output from the timer offset calculation unit 308 and outputs the result to the intermittent timer setting unit 311. The intermittent timer setting unit 311 sets a count value corresponding to the input value in the intermittent timer unit 310.

  The intermittent timer unit 310 counts the clock signal output from the RTC 314 when the pause period starts, and outputs a start timing signal to the reception circuit start unit 309 when the count value reaches a set value. Then, the reception circuit activation unit 309 activates the reception circuit 309 according to the activation timing signal. At this time, the reference frequency oscillator 302 and the like are also activated. The reference frequency oscillator 302 stops operating at the start of the pause period. As described above, the intermittent timer unit 310 that counts the clock signal output from the RTC 314 and the main microcomputer unit 304 are synchronized, and the receiving circuit 305 and the like are started at an accurate timing to enter the reception period.

  Note that FIG. 10 clearly shows the circuit portion 320 that is fed only during the non-rest period.

  The configuration described above is the same as the configuration shown in FIG. 12, but the specific configuration and operation in the fourth embodiment will be described below.

  The transmission circuit in the wireless unit includes an automatic power control circuit, and the automatic power control circuit includes an amplifier. Therefore, the transmission circuit generates heat when the transmission circuit is operating. When the mobile communication device is in a transmission state until just before the start of the pause period, the ambient temperature of the RTC 314 is higher than the normal temperature due to heat generated by the amplifier. Therefore, since the start timing of the non-pause period is determined based on the oscillation frequency of the RTC 314 at a high temperature, when the ambient temperature falls to room temperature during the pause period, the reception period is different from the normal start timing. May start.

  In the fourth embodiment, the heat generation amount of the amplifier during the non-rest period is calculated, the temperature is estimated from the calculated heat generation amount, and the timer set value is corrected according to the estimated temperature. Specifically, the transmission control unit 319 detects the output power Pout of the amplifier in the non-pause period and the ratio (transmission duty ratio) D of the transmission period in the monitoring period t set in the non-pause period. Data indicating the detected output power Pout (W), the transmission duty ratio D, and the power efficiency η of the amplifier is output to a PA (Power Amplifier) heat generation amount calculation unit 318. The power efficiency η of the amplifier is known and stored in advance in the transmission control unit 319.

  The PA heat generation amount calculation unit 318 calculates the heat generation amount of the amplifier using the data input from the transmission control unit 319. The calorific value is obtained by, for example, a calculation formula of Pout * D * t / η. Further, the ambient temperature of the RTC 314 is estimated from the calculated calorific value.

  FIG. 11 is an explanatory diagram showing an example of the relationship between the heat generation amount of the amplifier and the device temperature. If data representing the relationship shown in FIG. 11 is set in the PA heat generation amount calculation unit 318 in advance, the ambient temperature of the RTC 314 can be estimated based on the calculated heat generation amount. For example, the apparatus temperature is regarded as the ambient temperature of the RTC 314.

  As in the case of the first embodiment, the LUT 316 includes the count value when the clock signal of the oscillation frequency of the RTC 314 at various temperatures is counted in the normal pause period, and the clock signal of the oscillation frequency of the RTC 314 at room temperature. A difference value from the count value in the case of counting in the regular pause period is set as the correction value.

  The LUT 316 outputs a correction value corresponding to the temperature estimated by the PA calorific value calculation unit 318. However, in the fourth embodiment, the adder 306 immediately before the rest period, that is, when the non-rest period ends. Is controlled to output a correction value. The entity that controls the LUT 316 is, for example, the intermittent timer unit 310.

  When the non-pause period starts, the adder 306 adds the correction value output from the LUT 116 to the value output from the phase difference detection circuit 307 and outputs the added value to the timer offset calculation unit 308. The timer offset calculation unit 308 outputs a value in the direction in which the phase difference detected by the phase difference detection circuit 307 is eliminated to the adder 312. In this embodiment, the output of the phase difference detection circuit 307 is a PA calorific value. The calculation unit 318 corrects the temperature according to the estimated temperature. Therefore, as in the case of the first embodiment, when the temperature state immediately before entering the suspension period is higher than the normal temperature, and when the adder 312 or the like is not present, it is based on the oscillation frequency of the RTC 314 at the high temperature. If the start timing of the non-pause period is determined and the ambient temperature falls to room temperature during the pause period, the reception period may start at a timing different from the normal start timing. In the embodiment, the activation timing of the non-pause period is determined based on the oscillation frequency of the RTC 314 at room temperature, and the deviation of the activation timing determined by the intermittent timer unit 310 from the normal activation timing can be reduced. .

  Furthermore, in the fourth embodiment, even when no thermometer is installed, there is an effect that correction according to the temperature for accurately determining the start timing of the non-pause period can be performed.

  Note that, instead of adding the correction value output from the LUT 316 to the output of the phase difference detection circuit 307, the adder 312 is set in the pause period setting unit 313 as in the case of the first embodiment. The correction value output from the LUT 316 may be added to the existing value and the value output from the timer offset calculation unit 308.

  The present invention can be suitably applied to a mobile communication device that performs intermittent reception control.

It is a block diagram which shows the basic composition of the intermittent reception system of the mobile communication apparatus by this invention. It is a flowchart which shows the process performed with the intermittent reception system shown in FIG. It is a block diagram which shows the basic composition of the intermittent reception system of the mobile communication apparatus of the other aspect by this invention. It is a flowchart which shows the process performed with the intermittent reception system shown in FIG. It is a block diagram which shows the basic composition of the intermittent reception system of the mobile communication apparatus of the further another aspect by this invention. It is a flowchart which shows the process performed with the intermittent reception system shown in FIG. It is a block diagram which shows 1st Embodiment of the intermittent reception system of a mobile communication apparatus. It is a block diagram which shows 2nd Embodiment of the intermittent reception system of a mobile communication apparatus. It is a block diagram which shows 3rd Embodiment of the intermittent reception system of a mobile communication apparatus. It is a block diagram which shows 4th Embodiment of the intermittent reception system of a mobile communication apparatus. It is explanatory drawing which shows an example of the relationship between the emitted-heat amount of an amplifier, and apparatus temperature. It is a block diagram which shows the general intermittent reception system of a mobile communication apparatus. It is explanatory drawing which shows an example of the temperature-frequency characteristic of a crystal oscillator. It is explanatory drawing which shows an example of the relationship between the idle time and temperature in a mobile communication apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Oscillator 2 Intermittent timer part 3 Temperature detection part 4 Correction value determination part 5 Temperature compensation part 6 Phase difference detection part 7 Timer setting value correction part 8 Phase correction part 9 Phase difference correction part 21 Heat generation amount calculation part 22 Temperature estimation part 31 Main Timer unit 32 Radio unit 101, 201, 301, 401 Automatic frequency control unit (AFC)
102, 202, 302, 402 Reference frequency oscillator (TCXO)
103, 203, 303, 403 Phase lock loop (PLL)
104, 204, 304, 404 Main timer unit 105, 205, 305, 405 Receiving circuit 107, 207, 307, 407 Phase difference detecting circuit 108, 208, 308, 408 Timer offset calculating unit 109, 209, 309, 409 Receiving circuit Starting unit 110, 210, 310, 410 Intermittent timer unit 111, 211, 311, 411 Intermittent timer setting unit 112, 212, 312, 412 Adder 113, 213, 313, 413 Rest period setting unit 114, 214, 314, 414 Clock oscillator (RTC)
115,215 Thermometer 116,216,316 LUT
117 Frequency deviation calculation part 318 PA calorific value calculation part 319 Transmission control part

Claims (13)

An intermittent reception method of a mobile communication device that includes a wireless unit that performs transmission and reception operations using a main clock signal created by a main timer unit and performs intermittent reception control,
An oscillator having a characteristic of oscillating a clock signal at an oscillation frequency lower than the frequency of the main clock signal and generating a frequency deviation in accordance with a change in ambient temperature;
An intermittent timer unit that counts a clock signal output from the oscillator and generates a timing signal indicating a start timing of a non-pause period in intermittent reception when the count value reaches a timer set value;
A temperature detector for detecting the ambient temperature of the oscillator;
A correction value determination unit that determines a correction value according to a frequency deviation corresponding to a difference from the ambient temperature of the ambient temperature detected by the temperature detection unit when the non-pause period in intermittent reception ends;
An intermittent reception method for a mobile communication device, comprising: a temperature compensation unit that corrects the timer set value with the correction value determined by the correction value determination unit. A phase difference detection unit for detecting a phase difference between a main clock signal created by the main timer unit and a timing signal generated by the intermittent timer unit;
The intermittent reception system for a mobile communication device according to claim 1, further comprising: a timer set value correction unit that corrects a timer set value with a value corresponding to the phase difference detected by the phase difference detection unit. The phase correction part which correct | amends the phase of the timing signal input into a phase difference detection part according to the ambient temperature which the temperature detection part detected when the idle period in intermittent reception ends is provided. The intermittent reception system of the described mobile communication apparatus. The correction value determining unit counts the clock signal of the oscillation frequency of the oscillator at each of a plurality of ambient temperatures during the pause period and counts the clock signal of the oscillator oscillation frequency at room temperature during the pause period The intermittent reception system of the mobile communication apparatus according to any one of claims 1 to 3, further comprising a data table in which a value of a difference from the count value of the mobile station is set as a correction value. The correction value determining unit counts the clock signal of the oscillation frequency of the oscillator at each of a plurality of ambient temperatures during the pause period and counts the clock signal of the oscillator oscillation frequency at room temperature during the pause period The intermittent reception method of the mobile communication device according to any one of claims 1 to 3, wherein a value of a difference from the count value of the mobile communication device is calculated as a correction value. An intermittent reception method of a mobile communication device that includes a wireless unit that performs transmission and reception operations using a main clock signal created by a main timer unit and performs intermittent reception control,
An oscillator having a characteristic of oscillating a clock signal at an oscillation frequency lower than the frequency of the main clock signal and generating a frequency deviation in accordance with a change in ambient temperature;
An intermittent timer unit that counts a clock signal output from the oscillator and generates a timing signal indicating a start timing of a non-pause period in intermittent reception when the count value reaches a timer set value;
A phase difference detection unit for detecting a phase difference between a main clock signal created by the main timer unit and a timing signal generated by the intermittent timer unit;
A timer set value correcting unit that corrects the timer set value with a value corresponding to the phase difference detected by the phase difference detecting unit;
A temperature detector for detecting the ambient temperature of the oscillator;
A phase correction unit that corrects the phase of the timing signal input to the phase difference detection unit according to the ambient temperature detected by the temperature detection unit when the pause period in intermittent reception ends. Intermittent reception method for mobile communication devices. The phase correction unit counts when the clock signal of the oscillation frequency of the oscillator at each of a plurality of ambient temperatures is counted during the pause period, and when the clock signal of the oscillation frequency of the oscillator at normal temperature is counted during the pause period A data table in which a difference value from the count value is set as a correction value, and an adder that adds the count value corresponding to the ambient temperature detected by the temperature detection unit in the data table and the output value of the intermittent timer unit The intermittent reception system of the mobile communication apparatus according to claim 6. An intermittent reception method of a mobile communication device that includes a wireless unit that performs transmission and reception operations using a main clock signal created by a main timer unit and performs intermittent reception control,
An oscillator having a characteristic of oscillating a clock signal at an oscillation frequency lower than the frequency of the main clock signal and generating a frequency deviation in accordance with a change in ambient temperature;
An intermittent timer unit that counts a clock signal output from the oscillator and generates a timing signal indicating a start timing of a non-pause period in intermittent reception when the count value reaches a timer set value;
A phase difference detection unit for detecting a phase difference between a main clock signal created by the main timer unit and a timing signal generated by the intermittent timer unit;
A calorific value calculation unit for calculating a calorific value of the transmission circuit in the wireless unit in a non-pause period;
A temperature estimation unit that estimates the ambient temperature of the oscillator based on the heat generation amount calculated by the heat generation amount calculation unit;
A phase difference correction unit that corrects a value according to the phase difference detected by the phase difference detection unit using a frequency deviation according to the ambient temperature estimated by the temperature estimation unit;
An intermittent reception method for a mobile communication device, comprising: a timer set value correction unit that corrects a timer set value with a value corresponding to the phase difference corrected by the phase difference correction unit. A transmission time detection unit for detecting a ratio of transmission time in a predetermined period of non-pause period;
The calorific value calculation unit calculates the calorific value based on the ratio of the transmission time detected by the transmission time detection unit, the transmission power in the transmission circuit, and the efficiency of the amplifier in the transmission circuit. Reception method. The mobile communication according to claim 8 or 9, wherein the phase difference correction unit corrects a value corresponding to a frequency deviation corresponding to a difference from ambient temperature of ambient temperature with a value corresponding to the phase difference detected by the phase difference detection unit. The intermittent reception method of the device. It has a radio unit that performs transmission and reception operations using the main clock signal created by the main timer unit, and has a characteristic that oscillates the clock signal at an oscillation frequency lower than the frequency of the main clock signal and generates a frequency deviation according to changes in ambient temperature An intermittent reception method executed by a mobile communication device that performs intermittent reception control using an oscillator and a timer set value,
Detecting the ambient temperature of the oscillator;
Determine a correction value according to the frequency deviation corresponding to the difference from the ambient temperature detected when the non-pause period in intermittent reception ends,
Correct the timer set value with the determined correction value,
A mobile communication device that counts a clock signal output from the oscillator and generates a timing signal indicating a start timing of a non-pause period in intermittent reception when the count value reaches a corrected timer set value. Intermittent reception method. It has a radio unit that performs transmission and reception operations using the main clock signal created by the main timer unit, and has a characteristic that oscillates the clock signal at an oscillation frequency lower than the frequency of the main clock signal and generates a frequency deviation according to changes in ambient temperature An intermittent reception method executed by a mobile communication device that performs intermittent reception control using an oscillator and a timer set value,
Detect the phase difference between the main clock signal and the timing signal,
Correct the timer setting value with a value according to the phase difference,
The clock signal output from the oscillator is counted, and when the count value reaches the timer set value, a timing signal indicating the start timing of the non-pause period in intermittent reception is generated,
Detecting the ambient temperature of the oscillator;
A method for intermittent reception of a mobile communication device, comprising: correcting a phase of a timing signal according to an ambient temperature detected when a pause period in intermittent reception ends. It has a radio unit that performs transmission and reception operations using the main clock signal created by the main timer unit, and has a characteristic that oscillates the clock signal at an oscillation frequency lower than the frequency of the main clock signal and generates a frequency deviation according to changes in ambient temperature An intermittent reception method of a mobile communication device executed by a mobile communication device that performs intermittent reception control using an oscillator and a timer set value,
Detect the phase difference between the main clock signal and the timing signal,
Calculate the heat generation amount of the transmission circuit in the wireless unit in the non-pause period,
Estimate the ambient temperature of the oscillator based on the calculated calorific value,
Using the frequency deviation according to the estimated ambient temperature, correct the value according to the phase difference,
Correct the timer set value with a value corresponding to the phase difference after correction,
The clock signal output from the oscillator is counted, and when the count value reaches a timer set value, a timing signal indicating a start timing of a non-pause period in intermittent reception is generated. Method.

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