JPH06303188A - Communication system of mobile object and service changing or updating method therefor - Google Patents

Abstract

PURPOSE:To make it possible to easily change/update the program of a mobile station when the service of a system is updated by extracting the program of the mobile station that a base station superposes on notifying information and transmits by the mobile station and writing the program in the program memory at a station in use, CONSTITUTION:A CPU 4 controls the whole of a mobile station in accordance with the basic operation program which is preliminarily stored in the ROM of a storage part 5 for program. A radio/radio control part 1 and a TDMA/ channel CODEC part 2 perform a perch scanning, set a frequency and read the program update information in the notifying information from a base station. The mobile station updates the programs of a storage part 6 for program such as EEPROM, etc., by this update information, and when the update is rightly terminated, the mobile station displays the update termination on an LCD, etc., and shifts to a normal waiting operation. Thus, the changes and additions of various kinds of services are generated in a system, the changes and updates of the program of the mobile station can be easily performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital mobile communication system, and more particularly to a portable communication system such as a car telephone.

[0002]

2. Description of the Related Art At present, mobile communication systems are rapidly developing with the introduction of digital technology.
The spread of mobile phones is remarkable, and expectations for personal communications that enable anyone, anytime, anywhere, are rapidly expanding. This mobile communication system can be roughly divided into voice communication, non-voice communication, premise use on the premises, and premise use outdoors.

For example, a system intended for use on a premises can receive various services such as data communication and use as a database terminal as well as use as a telephone. When various services to be performed are changed or added, the mobile communication terminal side also needs a procedure for changing and updating the program on the interface. Normally, a program change at the interface of this mobile communication terminal is dealt with by exchanging a ROM (Read-Only Memory).

That is, when the service is changed or added, the program change of the software at the interface of the mobile communication terminal is specially performed in the terminal such as replacement with the ROM in which a new program is written. It is dealt with by performing work.

[0005]

However, when various services described above are changed or added (that is, updated), the ROM relating to the change or addition of the software program of the interface of the mobile communication terminal. Work such as replacement requires special technology,
It was a time-consuming task. For example, when changing the software program of the mobile communication terminal, the mobile communication terminal is once collected, and a technician who is familiar with the terminal replaces the ROM, the board, or the like, or connects another device, and executes the program. Processing such as reading data was necessary.

[0006] This process can be dealt with by spending time to change or add a service when the terminal installation place is limited to a relatively narrow range such as a use type system on the premises. It was possible. However,
Especially in the outdoor usage type system, since the terminal users disperse the system service in a wide range, the distance between the terminal user and the terminal supplier is large, and in order to cope with the service change, both This will impose a heavy burden on the terminal, and eventually, during the period when the terminal is collected for work, or when the terminal cannot be collected due to distance or time problems, new services will not be available. Various problems have been pointed out.

Therefore, the present invention makes it possible to easily and quickly create a new mobile communication system without changing the system service or adding a new service, without imposing a great burden on the terminal user and the terminal supplier. An object of the present invention is to provide a system that can receive services and a method of constructing the system.

[0008]

The first invention of the present application is, in a digital mobile communication system, a means for transmitting a program of a mobile station by superimposing the program of the mobile station on broadcast information, on the network system side (base station side). Provided on the mobile station side is means for extracting program data from broadcast information from the network system side, and means for writing the extracted program data in a program memory in the mobile station to provide services in the mobile communication system. When any change or addition of the above occurs, the network system side can change or update the program of the mobile station.

According to a second aspect of the present invention, within a predetermined time, the network system side transmits to the mobile station side broadcast information superposed with a code indicating a change or update of the mobile station program, and the mobile station side During the predetermined time, the program memory on the mobile station side is rewritten based on the received broadcast information from the network system side.

[0010]

According to the above-described method, even when it is necessary to change or add a service in the mobile communication system, the notification information transmitted from the base station of the network system service can be used for the mobile station. Since it has means for superimposing and transmitting the program data, the program data information can be transmitted to the mobile station, and the program data information is extracted to the mobile station and written in the program memory in the mobile station. Means are provided to enable the mobile station to receive the program data information.

As a result, the hardware of the mobile station is changed (RO
It is possible to change or update the program of the mobile station without performing M exchange, etc.).

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described in detail below with reference to the drawings. The following description will be given mainly on the mobile station.

FIG. 1 is a schematic diagram of the configuration of the mobile station, and FIG. 2 is a flowchart showing the processing procedure for updating the program storage unit in the mobile station.

In FIG. 1, reference numeral 1 is a radio and radio control section, and the inside thereof is composed of a transceiver, a synthesizer, a power amplifier, a modulator / demodulator and the like. 2 is TDMA (Tim
eDivision Multiple Acces
s) / channel CODEC (Code-Decode)
Assembling and disassembling signals of the baseband section. 3 is a voice CODEC / voice processing unit, which is a voice C
It is composed of an ODEC, a microphone, a speaker, and the like. 4 is C
PU (Central Processing Uni)
t), which controls the operation of the entire mobile station. 5 is the first
The ROM is a ROM storing a program for controlling a basic operation that is not affected by a change or addition of a service. A second program storage unit 6 is a writable memory unit that stores a program that can be changed by changing or adding a service, for example, a flash memory or an EEPROM.
(Electrically Erasable Pr
programmable Read-Only Memo
ry), or battery-backed RAM
(Random Access read-write
Memory) or the like is used. 7 is a man-machine interface and other circuits, such as an input key, LC
D (Liquid Crystal Display)
y), LED (Light Emitting Dio)
de), a buzzer, a circuit for connecting an external device, and the like.

The control of the operation in each step from state S1 to state S9 shown in FIG.
This is performed by operating a program preset in the first program storage unit 5 of.

In FIG. 2, the terminal user knows that the program needs to be changed by, for example, notification by direct mail or notification by notification information, and when he or she wants to update the program, the power is turned on. At the same time, the program data reception mode is set.
This setting is performed by, for example, pressing any other key together when the power is turned on.

When the power of the mobile station is turned on, the mobile station performs a perch channel scanning operation and sets the channel having the highest reception level as its own perch channel (state S1). The reception frequency is set to the frequency of the perch channel, the TDMA / channel CODEC unit 2 receives time-divided time slots, and synchronization is established (state S2). After the synchronization is established, the mobile station determines whether or not it is in the program data reception mode (state S3), and if it is not the mode, shifts to the normal standby operation.

The extended information element transmitted by the network system side is one information element in the broadcast information message, as shown in Table 1. The network system codes the program update information by adding a header or the like to this extended information element. The header includes an "extended information identifier" indicating the program update information, a "message number" indicating how many program information messages the program update information is composed of, or a "remaining message number", and the like. . The broadcast information is repeatedly transmitted to the mobile station.

[0019]

[Table 1]

When the mobile station is in the program data receiving mode in the determination of the state S3, the extended information element in the broadcast information is read (state S4) and it is determined whether or not the information element is the program update information. (State S
5). When it is not the program update information, it shifts to a normal standby operation.

If it is determined in the state S5 that the extended information element is the program update information, the extended information element is subsequently read as the program update data and the program is updated (state S6, state S7). The state S7 is updated as shown in FIG.
This is performed for the second storage unit 6 for programs.

When all the update data can be correctly received and the update is completed (state S8), the completion of the update is displayed on the LCD or a buzzer sounds (state S).
9). After that, the mobile station shifts to a normal standby operation and can make and receive calls.

By updating the program in the above-mentioned network system during charging of the battery, for example, at bedtime, the time during which the device cannot be used for a call can be reduced,
Also, there is no need to worry about battery consumption.

It is necessary to provide a storage unit for the program in the mobile station. In this case, the storage unit for performing the basic operation of the mobile communication system can be changed or updated. That is, by providing the two storage units of the writable storage unit, it is possible to surely change or update the program of the mobile station.

[0025]

According to the present invention, in the mobile communication system, when various services are changed or added,
In particular, it becomes possible to easily change or update the program of the mobile station without requiring a technician who is familiar with the terminal, and the burden of collecting the terminal is reduced. Moreover, since the program can be updated and changed almost simultaneously on all terminals, the time required for switching the system can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a mobile station according to the present invention.

FIG. 2 is a diagram showing a flowchart of a processing procedure for updating a program storage unit in a mobile station.

[Explanation of symbols]

 1 wireless / wireless control unit 2 TDMA / channel CODEC unit 3 voice CODEC / voice processing unit 4 CPU 5 first program storage unit 6 second program storage unit 7 man-machine interface and other circuits

Claims (2)

[Claims] 1. In a digital mobile communication system, a means for superimposing a program of a mobile station on broadcast information and transmitting the program is provided on the network system side, and the mobile station side is provided with broadcast information from the network system side. A means for extracting the program data is provided, and a means for writing the extracted program data in the program memory in the mobile station is provided, and when the service is changed or added in the mobile communication system, the mobile station is changed from the network system side. A mobile communication system characterized in that the program can be changed or updated. 2. Within a predetermined time, the network system side sends to the mobile station side broadcast information on which a code indicating a change or update of the mobile station program is superimposed, and the mobile station side sets the predetermined information. A method for changing or updating the service of a digital mobile communication system, characterized in that the program memory on the mobile station side is rewritten based on the received broadcast information from the network system side within a certain period of time.