JPH06268567A - Clock information notice system - Google Patents

Abstract

PURPOSE:To eliminate the need for the use to make setting and adjustment of clock information by keeping accuracy of clock information unified at each mobile terminal equipment in response to the small sized and light weight of a mobile terminal equipment. CONSTITUTION:An equipment at a base station side incorporates a clock circuit generating clock information and each mobile terminal equipment does not incorporate any clock circuit. Then the equipment at the V' base station side sends simultaneously the clock information counted by a built-in clock circuit to each mobile terminal equipment at a predetermined period through a predetermined control channel (100-102). Each mobile terminal equipment monitors the arrival of a signal from a base station side equipment and adjusts the clock information managed by itself when the clock information inserted in a control channel is received to be received clock information (112-115). The clock information is subject to, e.g. display processing at the mobile terminal equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clock information notifying system for notifying a mobile terminal capable of displaying and utilizing clock information from a base station side device to notify the clock information.

[0002]

2. Description of the Related Art In recent years, as is well known, the development of mobile terminals such as mobile phones and car phones has been remarkable. The proportion of those having a display device such as a liquid crystal panel is such a mobile terminal,
For example, mobile phones are much more expensive than ordinary phones.
When inputting the calling number, etc., the handset is placed on the ear of a general telephone, and it can be confirmed by sound whether the push button is pressed sufficiently. Since an input operation is carried by the user, there are many cases where the confirmation sound cannot be heard due to ambient noise or the like, and there is a strong demand for visually recognizing the input number. Therefore, many mobile terminals have a display device.

Since the mobile terminal having the display device has the display device, it can provide various services to the user. For example, it is convenient to display the clock information on what day, hour, and minute on a display device to make a call at a promised time.

In a conventional mobile terminal having such a function of displaying clock information, the mobile terminal itself is equipped with a clock circuit composed of, for example, an IC, and the clock information is read from this clock circuit and given to a display device to provide the clock information. Was being displayed. Note that the clock circuit is not a timer that simply outputs a pulse signal or the like for each predetermined cycle, but generates clock information that indicates what month, day, hour, and minute. This was done by pressing the push button of.

[0005]

However, when the clock information is displayed by such a method, the displayed time may be different for each mobile terminal depending on the accuracy of the clock circuit. Recently, in-plant mobile communication systems have been proposed in which mobile phones are provided to each person to improve work efficiency in factories and business establishments. Depending on the work, multiple people collaborate according to the time. And work. Therefore, it is desired that the clock information be unified in each mobile phone, and the conventional display method is insufficient from this point.

Further, in the case of a method of displaying clock information by mounting a clock circuit on each mobile terminal, the user performs the initial setting operation of the time again each time the battery of the mobile terminal runs out and a new battery is set. It can be said that it is complicated.

Further, in the case of the conventional method, there has been a problem that a clock circuit must be mounted on a mobile terminal (for example, a mobile phone) which is required to be small and lightweight.

In order to solve the above inconvenience, the following display method has already been proposed.

That is, a base station-side device such as a radio base station or a higher-order device (private branch exchange) or the like has a clock circuit installed therein, and at the end of a call to the mobile terminal, the base station-side device sends clock information to the mobile terminal. Is also transmitted on the call control information, and the mobile terminal adjusts the clock information internally managed by software according to the received clock information, and then the clock information is updated by software according to the update command signal from the timer. It has been proposed to display while updating. As a result, unification of clock information among mobile terminals, non-installation of a clock circuit in each mobile terminal, and elimination of initial setting of clock information are realized.

However, in the case of such a method of displaying the clock information, the clock information is not transmitted from the base station side device to the mobile terminal unless a call occurs, so that the reception of the clock information continues for a long time. It may occur that some mobile terminals do not have proper clock information adjustment, and some mobile terminals have different clock information from other mobile terminals, and until a call or an incoming call occurs after battery replacement. There is also a problem that the clock information cannot be displayed.

A similar problem occurs in a mobile terminal that does not have a function of displaying clock information but internally manages and uses the clock information.

The present invention has been made in consideration of the above points, and it is possible to ensure the accuracy of the unified clock information in each mobile terminal in response to the reduction in size and weight of the mobile terminal, and moreover, the clock. The present invention is intended to provide a clock information notification method that does not require the user to set and adjust information.

[0013]

In order to solve such a problem, the clock information notification system of the present invention uses a control channel which is independent of a mobile terminal and a communication channel and which can be broadcast at predetermined intervals. In a mobile communication system including a base station side device capable of controlling a mobile terminal using a cordless telephone interface, the base station side device uses a built-in clock circuit to control clock information for predetermined control. Broadcast to mobile terminals at predetermined intervals using channels,
When the mobile terminal receives the clock information inserted in the control channel, the self-managed clock information is adjusted to the received clock information.

[0014]

In the present invention, the base station apparatus has a built-in clock circuit for generating clock information, and each mobile terminal does not have a built-in clock circuit. Then, the base station side device broadcasts the clock information clocked by the built-in clock circuit to each mobile terminal at a predetermined cycle using a predetermined control channel.
Each mobile terminal monitors the arrival of a signal from the base station side device, and when it receives the clock information inserted in the control channel, it adjusts the self-managed clock information to the received clock information. To do. Such clock information is displayed on the mobile terminal, for example.

As described above, the base station apparatus notifies the mobile terminal of the clock information through the control channel at a predetermined cycle, and the mobile terminal adjusts the clock information to meet the demand for smaller and lighter mobile terminals. It is possible to ensure the accuracy of the unified clock information in each mobile terminal, and it is not necessary for the user to set and adjust the clock information.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a local mobile communication system will be described in detail below with reference to the drawings. Here, FIG. 2 is a block diagram showing the configuration of the mobile communication system of the embodiment, and FIG. 1 is its private branch exchange (PBX).
3 is a flowchart showing a transmission / reception process of clock information of a mobile terminal (PS).

In FIG. 2, a private branch mobile communication system 1 to which the clock information notifying system of this embodiment is applied is a private branch exchange 2 and one or more radio base stations (or two or more radio base stations accommodated in the private branch exchange 2). BS) 3a, 3b and the radio base stations 3a related to the radio zones RZa, RZb in which they are located,
3b and one or more mobile terminals 4a and 4b which communicate with each other via a wireless line.

Taking out and showing the configuration relating to the notification of the clock information, the private branch exchange 2 has a central processing unit (CPU) 20.
, A clock circuit 21 and a termination circuit (LC) 22, which are connected via a bus.

The central processing unit 20 controls the entire private branch exchange 2, and in the case of this embodiment,
For example, when there is an interrupt from the clock circuit 21,
The transmission processing of the clock information described later as shown in (A) is performed.

The clock circuit 21 is composed of, for example, an IC,
It generates various pulse signals having a predetermined cycle used in the processing of the private branch exchange 2, and generates and manages clock information, for example, what month, what day, what hour, and what minute (it may include any seconds or days of the week). It is a thing. Further, the clock circuit 21 gives an interrupt command to the central processing unit 20 to activate the clock information transmission process at predetermined intervals (for example, several minutes: a clock information transmission period).

The terminating circuit (LC) 22 is connected to the radio base stations 3a and 3b by a wired interface and performs termination processing of the interface. The terminating circuit (LC) 22 has a microcomputer-level central processing unit (CPU) built therein, and accommodates a transmission frame relating to a predetermined control channel in which clock information is inserted when the central processing unit 20 gives it. The transmission frame is provided to all the wireless base stations 3a and 3b that are operating.

Each radio base station 3a, 3b and each mobile terminal 4
The a and 4b are connected by a cordless telephone interface (for example, a second generation cordless telephone interface) in which a control channel and a call channel are provided independently.

The radio base stations 3a and 3b communicate with the mobile terminals 4a and 4b located in the radio zones RZa and RZb assigned to them. In the case of this embodiment, each radio base station 3a, 3b, as shown for the radio base station 3a, has a transmitting / receiving shared antenna 30, an antenna sharing device 31, an amplifying device 32, a modulating / demodulating device 33, and a control device 3.
4 has the same configuration as an existing wireless base station including the operation monitoring device 35 and the like, and when it comes to transmission of clock information, the clock information given from the private branch exchange 2 is directed to the mobile terminals 4a and 4b as it is. It is transmitted to a wireless line (naturally, amplification processing and the like for digital modulation processing and transmission are performed).

Each of the mobile terminals 4a and 4b of this embodiment also has the same structure as the conventional mobile terminal. That is,
As shown for the mobile terminal 4b, each mobile terminal 4a, 4b has, for example, a common antenna 40 for transmission / reception, an antenna sharing device 41, an amplifying device 42, a modulating / demodulating device 43, and a control device 4.
4, a frame processing device 45, an audio codec 46, an audio circuit 47, an input device 48 and a display device 49.

The frame processing device 45 is a modulation / demodulation device 43.
Among the data of the received frame demodulated by, the voice data inserted in the call channel is given to the voice codec 46, and the control information inserted in the call channel and the control information inserted in the control channel are set in the control device. Four
Give to 4. In the case of this embodiment, the clock information is inserted in the control channel as described later, and the control device 44
Given to. The control device 44 internally manages clock information by a software method, and will be described later with reference to FIG.
The clock information internally managed by the processing shown in FIG. 9B is adjusted so as to match the clock information in the private branch exchange 2. Although not described in detail, the control device 44 updates the internally managed clock information based on, for example, the number of clock signals generated, and the display device 49.
Display clock information on.

The mobile terminals 4a and 4b of this embodiment are
Does not have a built-in clock circuit, and has only a timer for measuring a predetermined period.

Next, from the private branch exchange 2 to the mobile terminals 4a, 4
The processing executed by the central processing unit 20 of the private branch exchange 2 when notifying the clock information to b will be described in detail with reference to FIG.

The central processing unit 20 includes a clock circuit 21.
From this, a clock information transmission interrupt occurs every predetermined period (which is the clock information transmission period), and at this time, the central processing unit 20 starts the processing shown in FIG. First, the central processing unit 20 takes out the clock information at that time from the clock circuit 21 (step 100) and codes the clock information to be inserted into a predetermined control channel (step 10).
1). Then, the central processing unit 20 passes through the terminating circuit 22 the transmission frame in which the clock information coded in the predetermined control channel is inserted to all the radio base stations 3
a and 3b, the clock information transmission process is terminated, and the process returns to the main routine (step 102).

Here, as the control channel into which the clock information is inserted, if it is possible to transmit in a broadcast format at a certain fixed period (which may be shorter than the transmission period of the clock information). good. For example, B, which informs independently
CCH (Broadcasting Channel) and USCCH (User S
(pecific channel) (2) or the like, and the notification may be performed. Alternatively, the clock information coded by USCCH (2) or the like is inserted into the field of the PCH (Paging Channel) at regular intervals for notification. You may do it.

FIG. 3 shows an example of clock information coded by USCCH (2). In this example, a code that is "clock information" is inserted into the information type of the second octet, and the third type
Octet to the 7th octet The upper 4 bits of each of the 4th bit "Year", "Month", "Day", "Hour", and "Minute" are inserted, and the upper digit code is inserted. "Year" in the lower 4 bits of each of the 7th octet,
This is a code in which the lower-order numerical code in the case of displaying two digits of “month”, “day”, “hour”, and “minute” is inserted, and the “day-of-week” code is inserted in the lower side of the eighth octet.

As described above, the transmission frame of the control channel in which the clock information is inserted is transmitted to all the radio base stations 3
Broadcast from a, 3b to all mobile terminals 4a, 4b.

Next, the reception processing of the clock information in each mobile terminal 4a, 4b, particularly the processing of the control device 44 in the mobile terminal 4a, 4b will be described with reference to FIG. 1 (B). The mobile terminal in the call operation state does not execute the process of receiving the clock information.

Call operation (including call control associated with call operation)
The control device 44 of the mobile terminal which does not perform the operation monitors the incoming call at a predetermined cycle based on the data given from the frame processing device 45 while saving the battery (step 110). On the other hand, when the incoming call cannot be detected (step 111), it is further determined whether or not the clock information has been notified (step 112). If there is no notification of clock information, the monitoring routine started at a predetermined cycle is immediately terminated.

The control device 44, which recognizes that the clock information has been notified, stores the received clock information in the clock information storage area of the built-in storage device (that is, adjusts the clock information) and measures the time by the built-in timer. The update cycle information of the clock information that has been set is reset (steps 113 and 114). After that, the received clock information stored in the clock information storage area is given to the display device 49 to update the displayed clock information, and the monitoring routine started in a predetermined cycle is ended (step 115).

By the monitoring processing of the incoming call or the reception of the clock information, which is carried out at such a predetermined cycle, the mobile terminal 4a,
The clock information of 4b is frequently adjusted so as to match the clock information of the private branch exchange 2.

Although illustration is omitted, at the time when the update cycle information of the clock information, which is kept by the timer built in the control device 44, indicates the update, the built-in storage device of the control device 44. The clock information stored in the clock information storage area is updated by software, and the clock information displayed on the display device 49 is also updated with this update.

Therefore, according to the above-described embodiment, the private branch exchange 2 broadcasts the clock information to the mobile terminals 4a and 4b at a predetermined cycle using the control channel, and the mobile terminals 4a and 4b transmit the received clock information to the received clock information. Since the adjusting process is performed, the following effects can be obtained.

(1) A clock circuit is not required for each mobile terminal 4a, 4b, and the mobile terminal 4a, 4b can be made small and lightweight.

(2) In each mobile terminal 4a, 4b, the same clock information as the clock information of the private branch exchange 2 can be managed, and the accuracy of the clock information can be secured as the whole system. it can.

(3) Since the clock information is accurately and automatically adjusted in each mobile terminal 4a, 4b, regardless of whether the battery is replaced or not, the operation for the user's initial setting and adjustment is unnecessary. can do. In addition, even if the display of the clock information is interrupted once the battery is replaced, the notification period of the clock information is short, so that the display of the clock information can be resumed immediately.

The present invention is not limited to the above embodiment, but allows the following modifications.

(1) The original source of the clock information may be the radio base stations 3a and 3b. (2) The cordless telephone interface of the wireless line may be an interface other than the second generation interface, for example, a 2.5th generation interface or a third generation interface. In short, it is independent of the call channel,
In addition, it is sufficient that it has a control channel that can notify the clock information in a broadcast format at a predetermined cycle. (3) Furthermore,
The present invention can be applied to a mobile communication system using a public network. If you carry your mobile terminal in a country that has a public network that uses the same protocol,
The clock information of the mobile terminal is automatically adjusted at the time of the country. (4) Further, the method of using the received clock information is not limited to the display. (5) The mobile terminal may be not only a mobile phone but also various types such as a car phone and a mobile facsimile.

[0043]

As described above, according to the present invention, the clock circuit for generating the clock information is provided only in the base station side device, and the base station side device uses the control channel to the mobile terminal at a predetermined cycle. Since the clock information is notified and the mobile terminal adjusts the clock information, the accuracy of the unified clock information in each mobile terminal can be ensured in response to the size and weight reduction of the mobile terminal. It is possible to eliminate the need for the user to set and adjust information.

[Brief description of drawings]

FIG. 1 is a flowchart showing a process relating to exchange of clock information between a private branch exchange and a mobile terminal according to an embodiment.

FIG. 2 is a block diagram showing a configuration of a mobile communication system to which the embodiment is applied.

FIG. 3 is an explanatory diagram showing a coding example of clock information according to the embodiment.

[Explanation of symbols]

1 ... Private mobile communication system, 2 ... Private branch exchange (PB)
X), 3a, 3b ... Radio base stations (BS), 4a, 4b ...
Mobile terminal (PS), 20 ... Central processing unit, 21 ... Clock circuit, 44 ... Control device, 49 ... Display device.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Akihiro Sawada 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. (72) Noriho Furuya 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. (72) Inventor Kazuyuki Tate 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Inventor Noriaki Nagashima 5-7-1, Shiba, Minato-ku, Tokyo NEC Corporation (72) Inventor Junichi Kojima 216 Totsuka-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture Hitachi, Ltd. Information & Communication Division

Claims (1)

[Claims] 1. A mobile terminal and a base station apparatus capable of controlling the mobile terminal by using a cordless telephone interface having a control channel that is independent of a call channel and that can be broadcast at predetermined intervals. In the mobile communication system provided, the base station side device broadcasts clock information clocked by a built-in clock circuit to the mobile terminal at a predetermined cycle using a predetermined control channel, When the terminal receives the clock information inserted in the control channel, the self-managed clock information
A clock information notification method characterized by adjusting received clock information.