JP2000138628A - Communication equipment and its waiting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend a waiting possible time by thinning the receiving division of a control signal from a base station equipment by a prescribed ratio to realize low power consumption of a communication equipment. SOLUTION: A CPU 11 reads a receiving interval Ti previously stored in a memory 15 to set to TRX 12 to control the equipment to receive a control signal sent from Cch of radio base station equipments BS1 to 3 only in the division of a time width ti within the time interval of a receiving interval Ti. Next, the reception scheduled number of times (n) of the control signal in the width ti and the actual receiving number of times (m) of the control signal in the width ti are read out from the memory 15 to respectively set to an n- counter and an m-register in the memory 15. In the division of the number of times (n) of the width ti the number of times (m) is program-controlled by the CPU 11 to stop the receiving operation of control signals from the radio base stations BS1 to 3 for the portion of (n-m) times portion, thereby the power consumption of a portable telephone equipment MS2 at the time of waiting is reduced by the portion of (n-m)/n.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standby method for a portable terminal device such as a portable telephone, and more particularly, to reduce the power consumption of a communication device by thinning out a receiving section of a control signal from a base station device at a predetermined ratio. And a standby method for extending the standby time.

[0002]

2. Description of the Related Art With the rapid spread of communication devices such as portable telephone devices, electronic circuit elements to be used have been improved and integrated, and the devices have been rapidly reduced in size, weight and power consumption. In a general usage mode, a user of a mobile phone device or the like always turns on the power so as to be able to receive a call from the other party anytime and anywhere, and is in a standby state. However, in order to ensure the portability of mobile phones,
It is common to use a rechargeable small battery as a power source, and there is an increasing demand for lower power consumption in order to maintain a standby state for a long time in a limited battery capacity.

FIG. 5A is a conceptual diagram of the configuration of a conventional portable telephone system, FIG. 5B is a block diagram of a portable telephone device for realizing a conventional standby method, and FIG. FIG. 7 is a diagram showing a timing at the time of a standby operation of the mobile phone device in FIG. As shown in FIG. 5A, the mobile phone system includes a mobile phone device MS1 and a plurality of wireless base station devices BS1 to BS3.
1 to BS3 constitute a plurality of radio zones RZ1 to RZ3 each having a predetermined coverage. Each of the radio base station apparatuses BS1 to BS3 includes a transmitting / receiving antenna (hereinafter, BS-ANT) 21 and is used for transmitting a control channel (hereinafter, Cch) for controlling the mobile phone apparatus MS1 and for talking with the mobile phone apparatus MS1. Transmission and reception of a communication channel (hereinafter, Pch) is enabled. The mobile phone device MS1 includes a memory 14 and an arithmetic processing unit (hereinafter, referred to as a processing unit).
CPU 11, a transmission / reception unit (hereinafter, TRX 12), and a transmission / reception antenna (hereinafter, MS-ANT) 13 are connected in series. The memory 14 stores reception intervals (hereinafter, Ti), time widths (hereinafter, ti), and radio zone values RZ11 to RZ33 for generating a timing signal for receiving a control signal of Cch. It is. Hereinafter, the operation of the system and the mobile phone device of FIGS. 5A and 5B will be described in detail with reference to FIG. 6 for the illustrated conventional example.

As shown in FIG. 6, a radio base station apparatus BS1
BS3 transmits the control signal to BS-A at the frequency f1 of Cch.
The control signal is always emitted from the NT 21, and the control signal is a repetition of an empty signal composed of a specific pattern for identifying the radio zone values RZ 11 to RZ 33. On the other hand, the mobile phone device MS1 starts the standby operation by receiving this control signal from the time of power-on. The details of the standby operation will be described below.

First, it is assumed that the portable telephone device MS1 stores RZ11 as a wireless zone value in the memory 14 in the wireless zone RZ1 when the power is turned off. When the mobile phone device MS1 is turned on, as shown in FIGS. 5 and 6, the CPU 11 reads out Ti and ti stored in the memory 14 in advance, controls the TRX 12 for each Ti, and outputs The control signal of the radio base station apparatus BS1 arriving via Cch is received only in the ti section. In sections other than ti, the receiving operation is stopped, the standby operation is performed intermittently, power consumption is reduced, and battery consumption is prevented.

[0006] Then, the portable telephone device MS1 determines the electric field strength of the control signal received in the interval ti by using a TRX12 (not shown).
, And determines whether the control signal is at a receivable electric field intensity level or at a non-receivable level. If the electric field strength is at a receivable level, the mobile phone device MS1 decodes the received control signal by the CPU 11, detects the radio zone value, and compares it with the radio zone value RZ11 in the memory 14. .
In this case, since they match, it is determined that the mobile phone device MS1 is located in the same radio zone RZ1, and the control signal is received within the interval of ti at intervals of Ti and the standby operation is performed. To continue.

If the electric field strength level is a level at which a control signal cannot be received, the portable telephone device MS1 scans the frequency of Cch to obtain a lower frequency of the receivable electric field strength level,
For example, the control signal is received and decoded by supplementing f1 '. If the decoded wireless zone value is, for example, RZ22, it does not match when compared with the wireless zone value RZ11 in the memory 14, so that the mobile phone device MS1 sets another wireless zone R
When it is determined that the mobile terminal has moved to Z2, the operation shifts from the standby operation to the location registration operation through a predetermined procedure. Then, the mobile phone device MS1 transmits a location registration request signal to the radio base station device BS2 using the uplink frequency f2 ′ of Cch.
Upon receiving the position registration request signal from the mobile phone device MS1, the wireless base station device BS2 registers that the mobile phone device MS1 exists in its own wireless zone RZ2, and
A position registration completion signal is transmitted to S1 at the downlink frequency f1 '. The mobile phone device MS1 is a radio base station device BS2.
When the location registration completion signal is received, the location registration operation is completed by rewriting the wireless zone value RZ11 in the memory 14 with the new wireless zone value RZ22, and the mobile station returns to the standby state, and the power is turned on in the new wireless zone RZ2. The standby operation is resumed at the same timing thereafter.

Next, the portable telephone device MS1 is connected to the wireless zone R
The operation when a call occurs during the standby operation in Z1 will be described. First, the mobile phone device M
The call signal of the corresponding mobile phone device MS1 is inserted into the empty signal of the wireless zone RZ1 in which the location of S1 is registered. The paging signal of the mobile phone device MS1 is based on the reception rate of the mobile phone device MS1 due to the deterioration of the control signal quality due to fading, interference and the like in the radio section between the wireless base station devices BS1 to BS3 and the mobile phone device MS1. Is included in the control signal reception section ti, and is recycled a plurality of times for transmission. When detecting the calling signal of the own station in the control signal received within ti, the mobile phone device MS1 shifts from the standby operation to the calling operation through a predetermined procedure, and notifies the radio base station device BS1 that the calling signal has been received. Send. Upon receiving this signal from the mobile phone device MS1, the radio base station device BS1 designates the mobile phone device MS1 with a Pch of a downlink frequency f3 and an uplink frequency f4 different from Cch, and the mobile phone device MS1 and the radio base station. A call can be made with the device BS1. At the end of the call operation, the mobile phone M
S1 releases Pch and releases Ti and ti from memory 14.
Is read out and reset to the TRX 12, and the standby state is resumed by switching to the Cch of the downlink frequency f1 and starting reception of the control signal from the radio base station apparatus BS1.

As described above, the portable telephone device MS1 is always in a standby state for receiving the control signal except for the position registration and the call operation. In a normal use mode of the portable telephone device, the standby state is the position registration and the call operation. Since the time is much longer than the time, reduction of power consumption in a standby state is an important issue for a mobile phone device.

[0010]

However, in the conventional standby method as described above, the power consumption of the portable telephone device during standby is consumed in the control signal reception section ti at every predetermined reception interval Ti. It is uniquely determined by the integration of the electric energy. Therefore, to further reduce the power consumption value during standby, the electronic circuit of the mobile phone device must rely exclusively on the adoption of new low-power-consumption type elements and the improvement of the power consumption value by integration. There is a problem that the development cost increases and it is difficult to reduce the cost of the mobile phone device. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems associated with the conventional standby method, and is intended to simply and effectively reduce the size of a mobile phone device without complicating equipment and / or system configuration. An object of the present invention is to provide a standby method capable of reducing power consumption, and to increase a talk time of a communication device such as a mobile phone device by extending a standby time.

[0011]

The present invention comprises a memory, an arithmetic processing unit, a transmission / reception unit, and a transmission / reception antenna, and transmits a control signal transmitted from a base station at a predetermined time interval at predetermined reception intervals. In a communication device that receives and performs a standby operation, the control signal is set to m based on a scheduled number n previously stored in the memory and a number m of receptions (n ≧ m).
The communication device keeps the standby operation during the continuous reception, and thereafter stops the standby operation from the start of the standby until the control signal reaches n times. The feature is that the possible time has been extended.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. Also in this embodiment, the same components and signal names as those in the above-described conventional example are given the same reference numerals and symbols. The mobile phone system of the present invention can be configured by simply replacing the conventional mobile phone device MS1 with the mobile phone device MS2 of the present invention from the components of the conventional mobile phone system shown in FIG. Yes, the transition of the mobile phone device MS2 from the standby operation to the location registration operation, the transition from the reception of the call signal to the call operation, and the recovery from these operations to the standby operation are the same as those described in the conventional example. Omitted.

FIG. 1 is a block diagram showing an embodiment of a portable telephone device for realizing the method of waiting for a communication device according to the present invention. FIGS. It is a flowchart. As shown in FIG. 1, a mobile phone device M according to the present invention
S2 differs from the conventional mobile phone device MS1 in that not only the area for storing the wireless zone value, the reception interval Ti, and the time width ti in the memory 15 but also the expected number of receptions n described later,
An area for storing the actual number of receptions m, the n-counter, and the m-register is provided. Hereinafter, the operation of FIG. 1 will be described in detail with reference to FIGS. 2, 3 and 4 for the illustrated embodiment.

The standby method according to the present invention is shown in FIGS.
As shown in (2), when the power of the mobile phone device MS2 is turned on, the CPU 11 reads out the Ti stored in the memory 15 in advance and sets it in the TRX 12, and sets the radio base station devices BS1 to BS3 only in the ti section within the time interval of Ti. Cch
Is controlled so as to be able to receive the control signal sent from the. Next, the expected number of receptions n of the control signal in ti and the actual number of receptions m of the control signal in ti are read from the memory 15 and set in the n-counter and the m-register in the memory 15, respectively. The CPU 11 program-controls the actual number of receptions m within the section of the expected number of receptions n of ti, and suspends the operation of receiving control signals from the wireless base station apparatuses BS1 to BS3 for (n−m) times. Power consumption of the mobile phone device MS2 of (nm) / n
It is reduced by an amount.

For example, when m = 8 and n = 10, the program control operation by the CPU 11 is shown in FIG.
Each step (I) to (V) will be specifically described. (I) The initial value 10 is set in the n-counter of the memory 15 and the initial value 8 is set in the m register. (II) T for determining reception interval Ti of control signal of TRX 12
Turn on i timer. (III) It is determined whether or not m = 0. At this time, since m = 8, the TRX 12 turns on the ti timer that determines the section ti in which the control signal is actually received, and starts receiving the control signal. When the ti timer is turned off, the reception of the control signal is stopped, and the content of the m-register is rewritten to -1. That is, 7 is stored in the m-register. (IV) Wait until the Ti timer is turned off, and subtract 1 from the n-counter. That is, the value of the n-counter is 9. (V) It is determined that n = 0. Since n = 9, the process returns to (II). According to the above basic operation, (II) to (V) are repeated 7 times (8 times in total), and after returning to (II), m = (III)
0, the ti timer is stopped, and TRX1
2 reception is stopped. At this time, since n = 2, (I
If the Ti timer is operated two times afterwards (total of ten times), (n) becomes (0) in (V), the process returns to (I).

In this example, the time axis of the control signal of Cch received by the mobile phone device MS2 is represented by the number of times of expected Ti reception n =
It is divided into intervals of 10 and within this interval TRX12
The content of the n-counter is decremented by one every time i is output, and the content of the m-register is decremented by one each time a control signal from the radio base station apparatus BS1 to BS3 is received once in the interval of ti. Compare the values of the n-counter and m-register with zero. First, when the control signal is received eight times, the value of the m-register becomes 0. At this point, the mobile phone device MS2 stops the receiving operation in the ti interval. Next, when Ti is output ten times, n
Since the counter becomes 0, the initial values 10 and 8 are reset in the n-counter and m-register of the memory 15, respectively, and the same operation as described above is sequentially repeated. That is, in this example, the receiving operation in the ti section is stopped twice for nm = 2 times every time Ti is output 10 times, so that the power consumption during standby is reduced by nm / n = 2/10 = 20%. You can do it.

Since the interval of Ti is set so that the call signal is always included in the section ti, the call signals from the radio base station apparatuses BS1 to BS3 are also set to be equal to each other in this example.
Recycling and transmitting more than three times the number of reception suspensions in the ti section + 1 = nm + 1 + 3 does not cause a loss of the opportunity to receive the call signal by the mobile phone device MS2. Theoretically, the greater the value of n and the smaller the value of m, the greater the effect of reducing the power consumption of the mobile phone device MS2. However, the call signal of the mobile phone device MS2 from the wireless base station devices BS1 to BS3 is recycled. The number of times the mobile phone device MS2 is accommodated in the system is limited, and the number of accommodated mobile phone devices MS2 is limited. Therefore, if the values of n and m are determined and written in the memory 15 in accordance with the number of times the paging signal is recycled predetermined for each system, the CPU 11 can control the program and use it in a form suitable for the system. A predetermined power reduction effect can be achieved. FIG. 4 shows an example of the combination of the values of m and n and the power reduction effect of the mobile phone device according to the standby method of the present invention. As is clear from the figure, it is clear that by appropriately selecting the values of m and n for each system, it is possible to significantly reduce the power consumption when the mobile phone device is on standby.

[0018]

According to the present invention, when the portable telephone device is on standby,
By stopping the number of control signal receptions in a reception section within a fixed reception interval at a predetermined ratio, the power consumption of the battery is reduced, the standby time is extended, and the talk time is increased. This can be easily realized by program control of an arithmetic processing unit built in the mobile phone without changing the method, and the effect is large as compared with the conventional standby method.

[Brief description of the drawings]

FIG. 1 is a block diagram of a mobile phone device according to an embodiment for realizing a standby method according to the present invention.

FIG. 2 is a diagram showing a standby operation timing of an embodiment for realizing a standby method according to the present invention.

FIG. 3 is a diagram showing a standby operation flowchart of an embodiment for realizing a standby method according to the present invention;

FIG. 4 is a diagram illustrating an example of a power reduction effect of the mobile phone device of the embodiment for realizing the standby method according to the present invention.

5A and 5B are a conceptual diagram of a system configuration of a conventional mobile phone device and a block diagram of a mobile phone device for realizing a standby method of the conventional example, respectively.

FIG. 6 is a diagram showing a standby operation timing of a conventional mobile phone device.

[Explanation of symbols]

RZ1 to RZ3. . . Wireless zone, RZ11 to RZ33. . . Wireless zone values, BS1 to BS3. . . Wireless base station device, MS1, MS2. . . Mobile phone device, 11. . . 11. an arithmetic processing unit (CPU); . . 12. transmitting / receiving section (TRX); . . Mobile phone device transmitting / receiving antenna (MS-AN
T), 14, 15. . . Memory, 21. . . Radio base station device transmitting / receiving antenna (BS-A
NT),

Claims (2)

[Claims] The present invention comprises a memory, an arithmetic processing unit, a transmission / reception unit, and a transmission / reception antenna, and receives a control signal transmitted from a base station at a predetermined time interval at a predetermined reception interval to perform a standby operation. The communication device performs the standby operation while continuously receiving the control signal m times based on the scheduled number n and the reception number m (n ≧ m) stored in the memory in advance, and thereafter, from the start of standby. A standby method in which the standby time of the communication device is extended by repeating an operation of stopping the standby operation until the control signal reaches n times. 2. A standby operation, comprising a memory, an arithmetic processing unit, a transmission / reception unit, and a transmission / reception antenna, receiving a control signal transmitted from a base station at a predetermined time interval at predetermined reception intervals. The communication device performs the standby operation while continuously receiving the control signal m times based on the scheduled number n and the reception number m (n ≧ m) stored in the memory in advance, and thereafter, from the start of standby. A communication apparatus characterized in that a standby time is extended by repeating an operation of stopping a standby operation until the control signal reaches n times.