JPH10313478A - Mobile telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always obtain a best communication quality, to further accelerate processing and to make the power of a battery small by having a means which changes control data to control an operation. SOLUTION: Control data is set and a base station retrieval time is started. Settings (S13) of a monitored base number an electric field intensity of each base station and data error ratio are performed. When there is a monitored base station, the base station number is compared with an appropriate value (S16). When the base station number is smaller than the appropriate value, control data is changed (S17), to a control data that is adjusted to a local part and operated. The changed control data include data for base station retrieval time, synchronization acquisition time, synchronization establishment time, handover start time, handover processing time, supervisory time for control channel pull out restoration and outside timer time. When comparison of the base station number with the appropriate value is finished, a most appropriate base station is selected among monitored base stations, a control channel is established and processing is performed (S18 to 21).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile telephone such as a PHS telephone and a portable telephone, and more particularly to an operation control of the mobile telephone.

[0002]

2. Description of the Related Art In a mobile telephone such as a PHS telephone or a portable telephone, control data is written in a non-volatile memory for managing an application. The operation according to is performed.

The control data consists of the following. Correction control data This is data for correcting the high-frequency circuit unit connected to the channel codec, and is data specific to the terminal. This data is required to perform control in accordance with the base station data protocol. This data includes protocol version identification, superframe cycle value, channel switching time,
Data for generating timing within the protocol, such as a base station search time, a synchronization acquisition time, a synchronization establishment time, a handover start time, and a handover processing time, are stored. This data defines a detailed operation and operation time. Business data Contract data for connecting to the business. Billing authentication is performed using this data. In addition, the telephone number of the terminal is stored in this data. This data is a value unique to the terminal. Other data This data notifies the response form of the information required by the application. Such control data is normally stored as uniform data (standard value) in the mobile telephone.
Therefore, the mobile telephone conventionally operates in one operation mode.

[0004]

By the way, the mobile telephone is usually used in the living area of the owner, but it may be used in a different area away from the living area due to travel or business trip. For example, it is usually used in an urban area, but is used in a rural area for travel or the like.

However, since the conventional mobile telephone operates in a single operation mode using the same control data, the touch (for example, the continuity of the call) used in the urban area and the local area is used. There was a problem that changed. In other words, the number of base stations installed is clearly different between urban and rural areas. Therefore, although the number of installed base stations is good in urban areas, when used in rural areas, it is often the case that calls are disconnected during calls.

[0006]

According to the present invention, there is provided a mobile telephone having means for changing control data for controlling an operation in order to solve the above-mentioned problems.

[0007] Here, the control data can be changed by monitoring the base station and based on the result. Further, it can be performed by storing a plurality of control data and switching control data to be used among the stored plurality of control data.

The control data to be changed is base station data necessary for performing control according to a protocol,
Furthermore, base station data includes base station search time, synchronization acquisition time,
At least one of the data of the synchronization establishment time, the handover start time, and the handover processing time. Here, the base station search time is the time used for monitoring the base station performed when the power is turned on, and the synchronization acquisition time is the information of the base station (RSSI; The synchronization establishment time is the time for acquiring the best one base station among all the base stations from which the information has been acquired and between the selected base station and the base station. It is time to establish synchronization. Further, the handover start time is a time (delay time) from when the conditions for the handover are actually prepared to when the handover processing is actually started, and the handover processing time is the time when the handover processing starts. This is the time from handover to the end of the handover process.

The control data to be changed can further include each data of the control channel out-of-synchronization recovery monitoring time and the out-of-service timer time. Here, the control channel out-of-synchronization recovery monitoring time is a time period in which the synchronization with the base station is recovered and then the synchronization is recovered or watched for a certain period of time. Synchronization is maintained. In addition, the out-of-service timer time is a pause time until the mobile phone goes out of the service-disabled area and performs monitoring processing after a pause for a predetermined time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a mobile telephone according to the present invention will be described in detail with reference to the accompanying drawings. FIG.
Is a PH as an embodiment of the mobile telephone according to the present invention.
It is a block diagram which shows S telephone. In this figure, 1
Is an MPU for controlling the entire apparatus, and includes a microcomputer (CPU) 11, a ROM 12, a RAM 13, a timer 15, and an I / O port 16, and the RAM 13 stores arithmetic data, external information, and control data. Then, the microcomputer 11 synchronizes with the clock supplied from the clock source 14 external to the MPU 1
The control data stored in the non-volatile memory 17 is developed in the RAM 13 according to a program that defines the operation processing procedure stored in the OM 12. Thereafter, the designated process is executed using the information from the RAM 13 and the timer 15. The microcomputer 11 is connected to parts other than the MPU 1 via the I / O port 16, and exchanges signals and data.

The key 2 is used for inputting a telephone number and setting various operation modes. The display device 3 displays various information input from the keys 2 and the state of the telephone, and is constituted by an LCD. The vibration motor 4 (including a motor drive circuit) operates when a call error occurs at the time of incoming call or call of the other party, and vibrates the vibration unit. The RF transmitting / receiving circuit 5 amplifies and frequency-converts a signal received by the antenna 10 to generate a baseband IC.
An RF receiving circuit that outputs a demodulation signal to the (BBIC);
RF for amplifying and frequency-converting a voice-modulated signal from a baseband IC and outputting the signal as a transmission signal to antenna 10
The antenna 10 is connected to the RF receiving circuit and the RF transmitting circuit by a changeover switch (not shown). The baseband IC 6 is controlled by the MPU 1 to modulate and demodulate an audio signal and an RF signal. The baseband IC 6 includes a channel codec. The audio signal output from the baseband IC 6 is supplied to the AF circuit 7
After the digital signal is converted into an analog signal by the above, the signal is amplified and the speaker 8 is driven. The audio signal from the microphone 9 is amplified by the AF circuit 7, converted from an analog signal to a digital signal, output to the baseband IC 6, and the modulated signal is transmitted from the antenna 10 via the RF transmitting and receiving circuit 5. Is done.

Such a PHS telephone can search (monitor) a base station and change the control data stored in the RAM 13 or the nonvolatile memory 17 based on the result. 2 and 3 show an operation flow at the time of initial monitoring when the power is turned on. In this case, first, FIG.
When the power is turned on (step S1) as shown in (1), a self-diagnosis of the entire circuit is performed (step S2). If the result of the self-diagnosis indicates that there is an abnormality in the circuit, the process proceeds to a shutdown process (step S3) and the power is turned off. (Step S4),
The operation ends (step S5).

On the other hand, if the result of the self-diagnosis indicates that the circuit is normal, then control data is downloaded from the RAM 13 (step S6), and control data is set for the channel codec in the baseband IC 6 (step S7).
When the setting is abnormal, the process returns to step S2 of the self-diagnosis. When the setting is performed normally, the base station search time starts (starts) as shown in FIG. In step S8), monitoring of the base station is performed (step S9). If the monitoring is normally performed until the expiration of the base station search time (step S10), the monitoring result is changed to CP.
U11 is notified (step S11). On the other hand, if the monitoring is not performed normally until the search time expires and there is an abnormality in the monitoring, the re-monitoring timer is started (step S12), and after a certain period of time, the process returns to the monitoring in step S9.

When the monitoring is performed normally and the result of the monitoring is notified, next, the number of monitored base stations, the electric field strength of each base station, and the data error rate are determined (step S).
13) is performed, and if it is determined that there is no base station monitored in this determination or that the electric field strength or data error rate of each base station has not reached the threshold value, out-of-service processing (step S14) is performed, The out-of-service timer time starts, and after the expiration of the out-of-service timer time (step S15), step S15 is performed.
Return to the start of the base station search time of No. 8.

On the other hand, if any base station could be monitored, the process goes to step S16 to compare the number of base stations with an appropriate value. If the number of base stations is larger than the appropriate value, the control data is kept at the standard value. However, if the number of base stations is smaller than the appropriate value, a control data change process (step S17) is performed. Therefore, for example, it was used in an urban area with a large number of base stations until the previous time, but when used in a local area with a small number of base stations from this time, the control data is changed to control data adapted to a local area with a small number of base stations, and thereafter. Operate with changed control data.

Here, the control data to be changed includes base station search time, synchronization acquisition time, synchronization establishment time, handover start time, handover processing time, control channel out-of-synchronization recovery monitoring time, and out-of-service timer time. It is. For example, the base station search time is long in an urban area with many base stations and short in a rural area with few base stations. Similarly,
The synchronization acquisition time and the synchronization establishment time are also long in urban areas and short in rural areas. On the other hand, the handover start time and the handover processing time are short in an urban area and long in a rural area. The control channel out-of-sync recovery monitoring time is short in urban areas and long in rural areas. The out-of-service timer time is also short in urban areas and long in rural areas. As described above, each time is changed between the urban area and the local area in consideration of the processing speed, the battery power consumption, and the communication quality.

When the comparison between the number of base stations and the appropriate value is completed,
The best base station among the monitored base stations is determined in step S1.
8 and enters a control channel establishment process with the base station (step S19). When the control channel establishment time expires (step S20), a standby process (step S20)
Enter 21).

FIGS. 4 and 5 show an operation flow at the time of monitoring after standby. Step S3 shown in FIG.
When state processing such as incoming / outgoing (step S32) is performed from the standby processing of step 1 and disconnection processing after the call (step S33) is performed, it is determined whether there is a base station previously searched. (Step S34) If there is a base station, the best base station is selected from the base stations in step S4.
The selection is made in step 5, but if there is no base station, the base station search time starts (starts) (step S35). Then, monitoring of the base station is performed (step S36), and if monitoring is not performed normally until the base station search time expires (step S37), a re-monitoring timer is started (step S38), and after a predetermined time, the re-monitoring timer is started. Returning to the monitoring, if the monitoring is normally performed until the search time expires, the monitoring result is notified to the CPU 11 next (step S39).

When the monitoring result is notified to the CPU 11, the number of monitored base stations, the electric field strength of each base station, and the data error rate are determined (step S40), as in the case of the first monitoring. If it is determined in this determination that there are no monitored base stations or that the electric field strength or data error rate of each base station has not reached the threshold value, out-of-service processing (step S41) is performed, and the out-of-service timer time is set. It starts and returns to the base station determination in step S34 after the expiration of the out-of-service timer time (step S42).

On the other hand, if there is any base station that could be monitored, the process goes to step S43 to compare the number of base stations with an appropriate value. Although the data is kept at the standard value, if the number of base stations is less than the appropriate value, that is, if it is a local area, the control data is changed in step S44.

When the comparison between the number of base stations and the appropriate value is completed, the best base station is selected in step S45, the control channel establishment process (step S46) in FIG. 5 is performed, and the control channel establishment time expires (step S46). When step S47), the process enters a standby process (step S48).

FIG. 6 is an operation flow relating to the control channel out-of-synchronization recovery monitoring time. When reception becomes impossible as shown in step S52 in the standby processing state in step S51, the out-of-synchronization recovery monitoring time starts (starts) as shown in step S53. At this time, the out-of-synchronization recovery monitoring time is changed from the standard value as described above if the monitored base station number is less than the appropriate value as described above when monitoring the number of base stations described above. The recovery processing is performed before the out-of-synchronization recovery monitoring time expires (step S54).
When the recovery is completed (step S55), the process returns to the standby state in step S51, but the synchronization is not recovered until the out-of-synchronization recovery monitoring time expires in step S56, and another connectable base station candidate is selected in step S57. As shown by R
If it is within the AM 13, the best base station is selected from the candidates (step S58), the control channel establishment process (step S59) is started, and when the control channel establishment time expires (step S60), the standby process (step S60) S
Enter 61). If there is no other connectable base station in the RAM 13 in step S57, the process proceeds to the monitoring process.

FIG. 7 is a detailed flow chart when the control data is changed from the number of base stations at the time of monitoring. When the monitoring process is started (step S71) and the search time starts (starts) (step S72), a synchronization process is performed with the received base station (step S73), and the base station ID is set.
Is detected (step S74), the electric field intensity of the base station being detected is detected (step S75), and the detected electric field intensity is compared with the threshold value in step S76, and the electric field intensity exceeds the threshold value. If not, the base station is discarded (step S77). If the electric field strength exceeds the threshold, the base station is registered as a candidate list in the RAM 13 (step S78), and this is repeated until the search time in step S79 expires. . Then, when the search time expires, the number of base stations registered in the candidate list is notified to the CPU 11 (step S).
80), the number of base stations is determined (step S81). If the number of base stations exceeds n, the control data remains at the standard value, but if the number of base stations is n or less, the control data is changed to step S82. Change as shown by. Further, step S83
Then, the best base station is selected from the base stations registered in the candidate list, and the monitoring process ends as shown in step S84.

FIG. 8 is a flowchart showing in detail the control when out of service area. In this case, when it is not necessary to change the out-of-service timer time from the number of receiving base stations, the electric field strength of each receiving base station, and the data error rate of the latest monitoring result in step S91, the out-of-service timer time is kept at the standard value. However, if it is necessary to change the out-of-service timer time, step S
At 92, the out-of-service timer time is changed. Further, step S
At 93, it is determined whether or not the out-of-service processing has been started n times within a certain time. If less than n times, the out-of-service timer time is kept at the input value. The out-of-service timer time is changed (step S94). Therefore, if the out-of-service timer time is changed in step S92 and step S94, the out-of-service timer time is changed twice, and the out-of-service timer time has a value considerably different from the standard value. Then, the out-of-service timer time is started (started) as shown in step S95 with the changed or standard value out-of-service timer time, and at the same time, the circuit is switched to step S96.
The operation is shifted to the low power operation as shown in FIG.
Continuing until the out-of-service timer time expires at 97, the out-of-service processing is terminated when the out-of-service timer time has expired, and the process proceeds to monitoring processing.

FIG. 9 is an operation flow at the time of handover processing. During the call processing, whether the values of the electric field strength and the data error rate of the currently linked base station have reached the handover processing level (step S101), or whether an instruction from the base station has been received (step S10)
2) is determined, and if any result is “Yes”, the handover start time starts as shown in step S103. At this time, if it is not necessary to perform the handover process in step S101, the call process is executed as it is. If the handover process instruction is not received from the base station in step S102, the call process is performed as it is. Run. When the values do not deviate from the handover processing level within the handover start time and the handover start time expires as shown in step S104, the handover processing time of step S105 is entered and the handover processing time is set. The program proceeds, and a handover process is performed. At this time, the handover start time and the handover processing time are the same when monitoring the number of base stations in FIGS. 2 to 5 and when the number of monitored base stations is smaller than an appropriate value as described in FIG. It has been changed from the standard value as described in the figure. Then, after the handover processing time expires (step S106), the process proceeds to the communication quality management in step S107, and it is determined whether or not the communication can be maintained as shown in step S108. When the control is performed and the handover process is completed (step S110), the call is maintained. If the handover processing time has not expired in step S106, the handover processing is continued. If the handover process is not completed in step S110, the call ends (is interrupted).

As described above, the PHS telephone changes the control data such as the base station search time, the handover start time, and the handover processing time based on the monitoring result. Even if the numbers differ, the best call quality can always be obtained, and the processing speed can be increased and the battery power can be reduced.

In the above-described embodiment, the control data is changed based on the monitoring result. However, a plurality of control data are stored in a memory in advance, and the control data is changed between the stored plurality of control data. Alternatively, the control data may be changed by switching the control data to be used in accordance with the user's feeling of use (hearing) by a key operation or the like.

In the above embodiment, a PHS telephone has been described as an example, but the present invention can be applied to other telephones such as a portable telephone. Further, it is needless to say that the control data can be freely changed from a standard value to another value, another value from another value, another value from a standard value, and the like.

[0029]

As described above, according to the mobile telephone of the present invention, since the control data can be changed, the best communication quality can be always obtained even if there are differences in the number of base stations between urban and rural areas. It is possible to achieve higher processing speed, lower power consumption of the battery, and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a mobile phone according to the present invention.

FIG. 2 shows a first embodiment of the mobile telephone according to the present invention.
5 is a flowchart showing the operation of the embodiment.

FIG. 3 shows a first embodiment of the mobile telephone according to the present invention;
3 is a flowchart showing the operation of FIG.

FIG. 4 is a second embodiment of the mobile telephone according to the present invention;
5 is a flowchart showing the operation of the embodiment.

FIG. 5 shows a second embodiment of the mobile telephone according to the present invention.
5 is a flowchart showing the operation of FIG.

FIG. 6 is a third embodiment of the mobile telephone according to the present invention;
5 is a flowchart showing the operation of the embodiment.

FIG. 7 is a fourth embodiment of the mobile telephone according to the present invention;
5 is a flowchart showing the operation of the embodiment.

FIG. 8 is a fifth embodiment of the mobile telephone according to the present invention;
5 is a flowchart showing the operation of the embodiment.

FIG. 9 is a sixth embodiment of the mobile telephone according to the present invention;
5 is a flowchart showing the operation of the embodiment.

[Explanation of symbols]

 1 MPU 11 CPU 12 ROM 13 RAM 15 Timer 5 RF transmitting and receiving circuit 6 Baseband IC 7 AF circuit 8 Speaker 9 Microphone 10 Antenna

Claims (7)

[Claims] 1. A mobile telephone comprising means for changing control data for controlling operation. 2. The mobile telephone according to claim 1, wherein
The control data changing means monitors the base station,
A mobile telephone characterized in that control data is changed from the result. 3. The mobile telephone according to claim 1, wherein
A mobile telephone, wherein the control data changing means stores a plurality of control data and switches control data to be used among the plurality of stored control data. 4. The mobile telephone according to claim 1, wherein the control data to be changed is base station data. 5. The mobile telephone according to claim 4, wherein
The mobile telephone, wherein the base station data to be changed is at least one of data of base station search time, synchronization acquisition time, synchronization establishment time, handover start time, and handover processing time. 6. The mobile telephone according to claim 1, wherein the control data to be changed is control channel out-of-sync recovery monitoring time data. 7. The mobile telephone according to claim 1, wherein the control data to be changed is out-of-service timer time data.