JPH1028286A - Portable terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always intermittently receive a correct PCH(paging channel), corresponding to its own incoming call group number in a waiting state. SOLUTION: Each time a PCH is received in a waiting state, whether or not the received PCH has a telephone number is judged (ST1). When the received PCH has the telephone number, it is compared with its own telephone number, and when they are the same, a processing at the time of an incoming call is operated (ST2-ST3, ST8). When they are different, an incoming call group number is calculated from the telephone number of the received PCH, and it is compared with its own incoming call group number (ST4-ST6). When those incoming call group numbers are different, that is, when the PCH corresponding to its own incoming call group number is not received, the intermittent reception of the PCH is stopped, synchronization with a control channel is again established, and this state is moved to the waiting state (ST7). Thus, the state in which the PCH corresponding to its own incoming call group number is received can be restored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable terminal device such as a portable telephone. Specifically, when the incoming call group number calculated from the telephone number included in the PCH (Paging Channel) intermittently received in the standby state is different from the own incoming call group number, the PCH corresponding to the own incoming call group number is received. The present invention relates to a portable terminal device that always returns to a correct standby state by returning to a standby state.

[0002]

2. Description of the Related Art Simplified mobile phones (PHS: Personal H)
andyphone System) receives a control channel transmitted from a base station, and receives a BCCH (Broa) in the control channel.
dcast Control Channel) to calculate the paging group number of the PCH to be received, and in the standby state, intermittently receive the PCH corresponding to the paging group number to obtain data such as paging. I have to.

[0003]

As described above, in the portable cellular phone, in the standby state, the PCH intermittently receives the PCH corresponding to the destination group number among the control channels transmitted from the base station. I do.

However, PCH received intermittently includes:
Since the information of the paging group number is not included, the paging group number of the PCH actually received cannot be known. If a PCH that does not correspond to its own paging group number is received, it becomes impossible to permanently receive data such as paging for itself.

Accordingly, the present invention is to provide a portable terminal device which intermittently receives a correct PCH corresponding to its own destination group number in a standby state.

[0006]

In a portable terminal device according to the present invention, in a standby state, data included in a control channel transmitted from a base station and indicating presence or absence of an incoming call to each terminal is divided. A portable terminal device that intermittently receives an incoming call group corresponding to its own incoming call group number calculated from its own terminal number out of a plurality of received incoming call groups. The incoming call group number calculating means for calculating the incoming call group number from the terminal number indicating the terminal where the call was made, and comparing the calculated incoming call group number with the own incoming call group number to determine whether they are the same. Receiving group number comparing means, and when it is determined that the receiving group number being received by the receiving group number comparing means is different from its own receiving group number, the apparatus returns to a state of receiving a receiving group corresponding to its own receiving group number. Reception control means for causing It is obtain things.

In the standby state, data included in the control channel transmitted from the base station and indicating the presence / absence of an incoming call to each terminal corresponds to its own incoming call group number among a plurality of divided incoming call groups. Receive incoming calls intermittently. And, from the terminal number included in the intermittently received incoming call group,
The incoming call group number being received is calculated by the incoming call group number calculating means. When receiving the incoming call group number corresponding to the own incoming call group number, the calculated incoming call group number is the same as the own incoming call group number. When the calculated incoming call group number and its own incoming call group number are compared by the incoming call group number comparing means and determined to be different, that is, when the incoming call group that does not correspond to the own incoming call group number is received, the reception is performed. The control means returns to a state of receiving the incoming call group corresponding to the own incoming call group number. For example, control is performed so as to establish synchronization with the control channel again and shift to a standby state. Further, for example, the reception timing is changed based on the calculated incoming call group number so as to receive the incoming call group corresponding to the own incoming call group number.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a simplified portable telephone 10 as an embodiment.

The telephone 10 includes a microcomputer 11 (hereinafter, referred to as a “microcomputer”) for controlling the entire system, an antenna 12 for transmission and reception,
2 is down-converted to a π / 4 shift QPSK (Quadrature Phase Shim).
ht Keying) signal, a radio section 13 for up-converting a π / 4 shift QPSK signal output from a digital modulation / demodulation section described later to obtain a transmission signal of a predetermined frequency, and an output from the radio section 13 The π / 4-shifted QPSK signal is demodulated to obtain received data, and TDMA (Time Division Multiple Acces
s) a digital modulation / demodulation unit 14 for modulating transmission data output from the processing unit to obtain a π / 4 QPSK signal.

The telephone 10 selects predetermined downlink slot data from received data (time-division multiplexed data of a plurality of slots) output from the digital modulation / demodulation unit 14, and separates the data into control data and compressed voice data. In addition, it has a TDMA processing unit 15 that multiplexes compressed audio data output from an audio codec unit to be described later and control data output from the microcomputer 11 into a preset uplink slot.

The telephone 10 has a TDMA processing unit 15.
The received audio signal is obtained by performing decoding processing (including error correction processing) on the compressed audio data output from
An audio codec section 16 for performing compression coding (including an error correction code addition processing) on the transmission audio signal to obtain compressed audio data, and a received audio signal output from the audio codec section 16 are supplied. Speaker (receiver) 17 and a microphone (transmitter) 18 for supplying a transmission audio signal to the audio codec unit 16.

The telephone 10 has a voice codec 1
6, the DTMF (Dual Tone) obtained as the received voice signal
Multiple frequency) signal is converted into key data corresponding to special input keys of “*” and “#” and numeric keys of “0” to “9”, and supplied to the microcomputer 11.
The key data corresponding to the special input keys of “*” and “#” and the numeric keys of “0” to “9” output from DT
A DTMF modulator / demodulator 19 which converts the MF signal into an MF signal and supplies the MF signal to the audio codec 16 as a transmission audio signal;
A conversion format storage unit 20 for converting key data output from the F modem unit 19 into character data. The conversion format storage unit 20 is connected to the microcomputer 11.

The telephone 10 records a received voice signal obtained by the voice codec section 16 in the answering machine mode, and transmits a recorded received voice signal and a pre-recorded response message (voice signal) to a key described later. An audio recording / reproducing unit 21 for playing back by operation of the input unit or control of the microcomputer 11, a vibration generating unit 22 for vibrating the telephone body under the control of the microcomputer 11 when an incoming call is received when the vibration mode is set, and a vibration mode Is not set, the microcomputer 11
And a ringing tone output unit 23 that outputs a ringing tone under the control of. Here, the audio recording / reproducing unit 21 has, for example, a semiconductor memory as a recording medium of the audio signal. The operation of the audio re-recording unit 21 is controlled by the microcomputer 11,
A signal indicating the operation state of the audio recording and reproducing unit 21 is supplied from the audio recording and reproducing unit 21 to the microcomputer 11.

The telephone 10 instructs a call,
To enter a call key for answering an incoming call, an end key for ending a call, a function key for entering the phonebook registration mode, setting an answering machine mode, a vibration mode, etc., and inputting a telephone number, etc. The key input unit 24 includes a numeric keypad, a special input key, a recording key for operating the recording / reproduction of the voice recording / reproducing unit 21, a reproduction key, and a volume control key. The key input unit 24 is the microcomputer 1
The microcomputer 11 monitors key operations of the key input unit 24.

The telephone 10 has a nonvolatile memory 25 for storing telephone directory data, redial data, character message data transmitted from the other party, mode setting information, and the like; Timer section 28 that counts time from an arbitrary point in time
And a liquid crystal display (LCD) 26 for displaying the state of the system, the telephone number of the other party at the time of calling, a text message transmitted from the other party, and the like. The liquid crystal display 26 is driven by an LCD driver 27 controlled by the microcomputer 11.

FIGS. 2 and 3 show the appearance of the telephone 10, in which parts corresponding to those in FIG. 1 are denoted by the same reference numerals.

An antenna 12 is provided at the upper end of the telephone body 40.
Is arranged. Further, a sound passage hole 41 for guiding sound from the built-in speaker to the outside is formed above the main body 40, and the liquid crystal display 26 is disposed below the sound passage hole 41. further,
The microphone 18 is arranged below the main body 40. A call key 42, a function key 43, and an end key 44 are arranged side by side in the center of the main body 40 and below the liquid crystal display 26. The end key 44 functions as a power on / off key when pressed for a long time.

Further, below the keys 42 to 44, there are left, right, up and down cursor movement keys 45, a registration key 46 for shifting to a telephone directory registration mode or the like, a clear key 47 for clearing input data, a ten key 48, Special input key 4
9, 50 are arranged. Here, the cursor movement key 4
The "↑" key which constitutes 5 also serves as a key for starting a search of redial data or telephone directory data, and "↓"
The key is also used to shift to a character transmission mode during a telephone call and to confirm received character data.

The main body 40 is provided with a key protection lid 51 which is openable and closable with the arrangement portion of the microphone 18 as a fulcrum. When the key protection lid 51 is closed, the keys 45 to 50 are covered. Therefore, the keys 45-5
Operation 0 must be performed with the key protection cover 51 opened. FIG. 2 shows a state in which the key protection cover 51 is removed.

The voice recording / reproducing unit 2 is provided on the side of the main body 40.
Recording key 5 for operating recording and playback of 1 (see FIG. 1)
2 and a reproduction key 53, and a volume adjustment key 54 for adjusting the volume. The volume adjustment key 54 is
The configuration is such that the volume increases when the side is pressed, and decreases when the side is pressed.

Next, the operation of the telephone 10 shown in FIG. 1 will be described.

When the power is turned on, synchronization with the control channel is lost, so that the control channel transmitted from the base station is received and synchronization with the control channel is established.
Thereafter, location registration that the user is in the area of the base station is performed. This location registration is performed using a call channel. After the location registration is completed, the mobile station returns to the control channel reception state and enters the standby state.

FIG. 4 shows a configuration example of the logical control channel (LCCH). However, the first of the TDMA frame
This is an example in which slots are allocated to a logical control channel (LCCH), and an LCCH superframe is composed of m intermittent transmission slots for each nTDMA frame.

The base station (CS) uses four slots for downlink (transmission) and four slots for subsequent uplink (reception).
The slot forms a 5 [ms] TDMA frame. And a downlink logical control channel (LCCH)
Exist for every nTDMA frame. That is, the downlink intermittent transmission cycle is 5 × n [ms].

The minimum period (5 × n × m [ms]) of the downlink logical control channel (LCCH) that specifies the slot positions of all LCCH elements is defined as an LCCH superframe. Downlink logical control channel (LCCH)
Is composed of a broadcast channel (BCCH), a paging channel (PCH), and an individual cell channel (SCCH). The BCCH is transmitted in the first slot of the LCCH super frame.
Is notified. On the other hand, the uplink logical control channel (LCCH) is configured by an individual cell channel (SCCH). The slot position of the uplink logical control channel (LCCH) is determined by the control carrier configuration information element in the radio channel information broadcast message on the BCCH.
S) notifies the mobile station (PS).

FIG. 5 shows the structure of the BCCH. B
CCH is a downlink one-way channel for broadcasting control information from CS to PS. The BCCH transfers information about the channel structure, system information, and the like.

The BCCH has a preamble pattern (P
R), a unique word for synchronization (UN), a channel type code (CI), a source identification code, data (BCCH), and a cyclic error detection code (CRC). The calling identification code is composed of a carrier identification code, a paging area number, and an additional ID. In addition, data (BCCH)
Is composed of octet 1 to octet 8. The lower 7 bits of octet 1 indicate the type of message by octet 2 to octet 8.

FIG. 6 shows the structure of the SCCH. S
CCH is a point-to-point bidirectional channel that transfers information required for call connection between CS and PS. This S
In the CCH, independent information is transferred for each cell.

The SCCH has a preamble pattern (P
R), a unique word for synchronization (UN), a channel type code (CI), a calling identification code, a destination identification code, and data (SC).
CH) and a cyclic error detection code (CRC). In the SCCH (downlink), the calling identification code is composed of a carrier identification code, a paging area number and an additional ID, and the destination identification code is a PS calling code (PS-ID).
It consists of. Although not shown, on the SCCH (uplink), the above-described calling identification code is a called identification code, and the above-mentioned called identification code is a calling identification code. In addition, data (SCCH)
Is composed of octet 1 to octet 5. The lower 7 bits of octet 1 indicate the type of message by octet 2 to octet 5.

FIG. 7 shows the configuration of the PCH. PC
H is a preamble pattern (PR), a unique word for synchronization (UN), a channel type code (CI), a calling identification code, data (PCH), and a cyclic error detection code (CR).
C). The calling identification code is composed of a carrier identification code, a paging area number, and an additional ID. The data (PCH) includes octet 1 to octet 8.

In this case, since the PCH defines only a single message, there is no area indicating the message type. 5 to 7 bits of octet 1, no call, BCD 13 digit or less PS number call service, hexadecimal 7 digit PS
A call service type such as a call service by number is displayed. The PS number is indicated by octets 1 to 7. Further, octet 8 instructs reception of a broadcast channel (BCCH). If a change occurs during intermittent reception, which will be described later, the PS receives the BCCH according to the reception instruction.

It should be noted that a plurality of PSs are provided depending on the paging group number.
PCH (PCH₁~ PCH_n) From PCH to be received
Understand. PS is the content of BCCH from PS number and CS
(N _PCH, N_GROUP, Control carrier configuration)
The incoming call group number is calculated by equation (1). here,
n_PCHIs the same number of incoming call groups, n_GROUPIs the incoming clustering factor
You. In addition, PCH arrival using 2 frequencies (2LCCH)
X = 2 if the groups are interrelated, otherwise
X = 1.

Incoming call group number = (PS number) MOD (n _PCH × n _GROUP × X) +1 (1) As described above, after the location registration is completed, the mobile station returns to the control channel receiving state and waits. State. In this standby state, the telephone (PS) 10 shifts to intermittent reception in which it receives only the PCH corresponding to the calculated incoming call group number (its own incoming call group number). In this case, since the PCH corresponding to the calculated paging group number exists for each LCCH superframe, intermittent reception is performed every 1.2 seconds.

As described above, in the standby state, the PCH corresponding to the own incoming call group number is intermittently received to obtain data such as an incoming call. If a transition is made to a state in which the PCH is received intermittently, data such as an incoming call to itself cannot be received forever.

Therefore, in the present embodiment, in the standby state, it is checked whether or not the intermittently received PCH corresponds to its own incoming call group number. It returns to the state of receiving the PCH corresponding to the group number. That is, in the standby state, the microcomputer 11 performs a control operation according to the flowchart of FIG.

First, in step ST1, every time a PCH is received, it is determined whether or not the received PCH includes a telephone number (PS number). If it is determined that the received PCH includes a telephone number, in step ST2,
It compares its own telephone number with the telephone number included in the received PCH (hereinafter referred to as "incoming telephone number"). Then, in step ST3, it is determined whether or not the incoming telephone number is the same as its own telephone number. If the incoming telephone number is not the same as the own telephone number, in step ST4, the incoming call group number is calculated from the incoming telephone number by the above equation (1). In this case, the PC corresponding to the own incoming call group number
When H is received, the calculated incoming call group number becomes the same as its own incoming call group number.

Then, in step ST5, the own incoming call group number is compared with the incoming call group number calculated in step ST4, and in step ST6, it is determined whether or not the two incoming call group numbers are the same. When both the incoming call group numbers are the same, it is determined that the PCH corresponding to the own incoming call group number has been received, and the process returns to step ST1. If the incoming call group numbers are different from each other, in step ST7, the PCH
The intermittent reception is stopped, the synchronization with the control channel described above is established again, and control is performed so as to shift to the standby state.

If it is determined in step ST3 that the incoming telephone number is the same as the own telephone number, the process proceeds to step ST8.
Then, the incoming call is processed.

As described above, in the operation according to the flowchart of FIG. 8, when the incoming call group number calculated from the incoming telephone number is different from the own incoming call group number, that is, when the PCH corresponding to the own incoming call group number is not received. , Microcomputer 11
Is to re-establish synchronization with the control channel and shift to the standby state, and can return to the state of receiving the PCH corresponding to its own called group number. Can be.

In the telephone set 10 shown in FIG. 1, the telephone number of the other party is input by operating the key input unit 24 (such as the numeric keypad 48), or after the redial data or the telephone directory data is searched, the telephone key 42 is pressed. Upon operation, first, the microcomputer 11 supplies telephone number data and the like as control data to the TDMA processing unit 15 and transmits the data to the base station through a control channel. As a result, the line connection with the other party is established, and a call is made possible.

Here, the communication is performed using the communication channel. At the time of the line connection processing, the communication frequency and the slot position data of the communication channel are transmitted as control data from the base station using the control channel, and the TDMA processing is performed. The data is supplied from the unit 15 to the microcomputer 11. The microcomputer 11
The radio section 13 is controlled based on the communication frequency data so that the transmission / reception frequency matches the communication frequency of the communication channel, and the slot selected by the TDMA processing section 15 is set based on the slot position data. Therefore, the call is made using the call channel notified from the base station.

Also, calling data is transmitted as control data from the base station using the control channel, and this calling data is supplied from the TDMA processing unit 15 to the microcomputer 11 and when an incoming call is detected, the calling sound is generated by the microcomputer 11. The output unit 23 is controlled to output a ringing tone, or the microcomputer 11 controls the vibration generating unit 22 to vibrate the telephone body 40.

While this calling operation is being performed,
When the call key 42 is operated and there is a response, the microcomputer 11
Response data is more control data than the TDMA processing unit 15.
And transmitted on the control channel to the base station. As a result, the line connection with the other party is established, and a call is made possible. Also in this case, the communication is performed using the communication channel notified from the base station.

In the talking state, the compressed voice data transmitted through the talking channel is output from the TDMA processing unit 15. The compressed audio data is supplied to the audio codec 16 and subjected to an encoding process, and then converted into an analog signal. Then, the received audio signal output from the audio codec section 16 is supplied to the speaker 17 and the speaker 1
7 outputs a sound.

The transmission audio signal output from the microphone 18 is supplied to the audio codec 16 and converted into a digital signal, and then subjected to a compression encoding process to form compressed audio data. Then, the audio codec section 16
The output compressed audio data is supplied to the TDMA processing unit 15 and transmitted to the other party through a communication channel.

In this case, "↓" of the cursor movement key 45
By operating the keys, ten keys 48 and special input keys 4
Character data can be transmitted by using the characters 9 and 50. In this case, the DTMF signal corresponding to the operated key is DT
The audio codec 16 output from the MF modem 19
Is supplied as a transmission audio signal.

As described above, the call data is TDM
When an incoming call is supplied from the A processing unit 15 to the microcomputer 11 and an incoming call is detected, when the answering machine mode is set, a ringing tone is output only for a predetermined time, and the telephone is automatically answered to be in a call ready state. . Then, after a response message to the effect that the received voice signal is recorded is transmitted to the calling side, the recording of the received voice signal is started by the voice recording / reproducing unit 21.

Also, when character message data by a DTMF signal is sent from the other party during an answering machine or during a call, the key data output from the DTMF modulation / demodulation unit 19 is stored in a conversion format under the control of the microcomputer 11. The character data is converted into character data with reference to the unit 20, and the character data is written in the character message area of the nonvolatile memory 25. When the character data is written in the non-volatile memory 25 as described above, the character message based on the character data is displayed on the liquid crystal display 26 and confirmed by long-pressing the “↑” key of the cursor movement key 45. It becomes possible.

In the above-described embodiment, when the incoming call group number calculated from the incoming telephone number is different from the own incoming call group number in the standby state, the microcomputer 11 operates the PC.
H, the intermittent reception is stopped, the synchronization with the control channel is established again, and the state shifts to the standby state.
The reception timing may be changed so as to receive the PCH corresponding to the own paging group number without stopping the intermittent reception. In that case, the microcomputer 11 performs a control operation according to the flowchart of FIG. 9 in the standby state.

In the flowchart of FIG.
Steps ST6 and ST8 are the same as those in the flowchart of FIG. In the flowchart of FIG. 9, when the incoming call group numbers are different at step ST6, the PC is determined at step ST7a.
H, without stopping the intermittent reception of H, based on the calculated paging group number, changing the reception timing so as to receive the PCH corresponding to the paging group number of itself, and then returns to step ST
Return to 1.

As described above, even in the operation according to the flowchart of FIG. 9, when the incoming call group number calculated from the incoming telephone number is different from the own incoming call group number, that is, when the PCH corresponding to the own incoming call group number is not received. , Change the PCH reception timing and change the PCH corresponding to its own paging group number.
Can be returned to a state in which it can be received, and a correct standby state can be always achieved.

In the above-described embodiment, when it is determined that the incoming call group number calculated from the incoming telephone number is different from the own incoming call group number, the state immediately returns to the state of receiving the PCH corresponding to the own incoming call group number. Process, for example, the process proceeds to the process of establishing synchronization with the control channel, but only when it is determined that the incoming call group number calculated from the incoming telephone number is different from the own incoming call group number a plurality of times in succession. Alternatively, the process may be shifted to a process for returning to a state of receiving the PCH corresponding to the own paging group number.

In the above-described embodiment, the present invention is applied to a simplified type portable telephone. However, the present invention is applicable to the case where the control channel transmitted from the base station in the standby state corresponds to its own destination group number. Of course, the present invention can be similarly applied to other portable terminal devices that receive PCH intermittently.

[0054]

According to the present invention, when the incoming call group number calculated from the telephone number included in the PCH intermittently received in the standby state is different from the own incoming call group number, that is, the PCH corresponding to the own incoming call group number When the PCH is not received, the PCH is returned to the state of receiving the PCH corresponding to its own paging group number, and can always be in the correct standby state.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a simplified mobile phone as an embodiment.

FIG. 2 is a front view showing the simplified mobile phone (with a key protection cover removed).

FIG. 3 is a side view showing a simplified mobile phone.

FIG. 4 is a diagram illustrating a configuration of a logical control channel (LCCH).

FIG. 5 is a diagram showing a configuration of a BCCH.

FIG. 6 is a diagram illustrating a configuration of an SCCH.

FIG. 7 is a diagram illustrating a configuration of a PCH.

FIG. 8 is a flowchart illustrating a control example for preventing a PCH shift in a standby state.

FIG. 9 is a flowchart illustrating another control example for preventing a PCH shift in a standby state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Simplified mobile phone 11 Microcomputer 12 Transmission / reception antenna 13 Radio unit 14 Digital modulation / demodulation unit 15 TDMA processing unit 16 Audio codec unit 17 Speaker (receiver) 18 Microphone (transmitter) 19 DTMF modulation / demodulation unit 20 Conversion format storage unit 21 Voice recording / playback unit 22 Vibration generator 23 Ring tone output unit 24 Key input unit 25 Non-volatile memory 26 Liquid crystal display 28 Timer unit

Claims (4)

[Claims] In a standby state, data included in a control channel transmitted from a base station and indicating presence / absence of an incoming call to each terminal is divided from a plurality of incoming call groups, and a terminal number of the terminal is determined based on its own terminal number. In the portable terminal device for intermittently receiving the incoming call group corresponding to the calculated own incoming call group number, the incoming call being received from the terminal number indicating the terminal which received the incoming call included in the intermittently received incoming call group Paging group number calculating means for calculating a group number; paging group number comparing means for comparing the calculated paging group number during reception with the own paging group number to determine whether they are the same; When it is determined that the incoming call group number being received is different from the own incoming call group number by the number comparing means, a receiving control means for returning to a state of receiving the incoming call group corresponding to the own incoming call group number, It is characterized by having Portable terminal apparatus that. 2. A telephone number comparing means for comparing a terminal number, which is included in the intermittently received incoming call group, indicating a terminal that has received an incoming call with its own telephone number to determine whether or not the terminal number is the same, When the telephone number comparing means judges that the two numbers are different, the incoming call group number calculating means calculates the incoming call group number being received, and the telephone number comparing means judges that the two numbers are the same. The portable terminal device according to claim 1, wherein the portable terminal device performs an incoming call process when performing the call. 3. The reception control means reestablishes synchronization with a control channel and shifts to the standby state in order to return to a state of receiving a reception group corresponding to the own reception group number. The portable terminal device according to claim 1, wherein the portable terminal device is controlled. 4. The reception control means according to the received call group number based on the calculated call group number in order to return to a state of receiving a call group corresponding to the call group number of the own device. The portable terminal device according to claim 1, wherein the reception timing is changed so as to receive a group of incoming calls.