JPH11318046A - Base station communication device and portable radio communication device and method for supplying power from base station communication device to portable radio communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer power and selectively supply power by controlling power to be used by selecting an operation circuit using the selection power supply circuit part in portable radio communication equipment. SOLUTION: When portable radio communication equipment (DTE) communicates with base station communication equipment (DCE), it operates with the minimum power consumption with a circuit in a basic area in a condition where the DCE recognizes the presence of the DTE and power to be transmitted to the DTE by the DCE is increased as needed after the initial communication with the DTE is completed. Then, when power is excessively transmitted for increase/decrease in the supply power, the DTE temporarily allows current to flow to a circuit for avoiding overload and then activates a region in an integrated circuit that has been deactived until that point or dynamically allocates an activated region to a deactivated region while referring to the amount of electricity being used in an expansion area being stored in a storage circuit part, thus transferring power and selectively supplying power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to power supply from a base station communication device to a portable radio communication device.

[0002]

2. Description of the Related Art A portable radio communication device (DTE), unlike a contact type portable communication device, does not have an external electrode, and thus is resistant to aging. Also, the base station communication device (DCE) that communicates with the portable radio communication device (DTE) does not have an electrode portion or a movable mechanical portion that accompanies taking in and out of the communication device, so that daily maintenance labor is greatly reduced. In addition, portable wireless communication devices (D
TE) has the advantage of recording ID numbers and data in internal integrated circuits and securing security by possessing an encryption processing function, etc., and has various advantages such as telephone cards, bus / train tickets, and toll collection on expressways. Application in various fields is expected. This portable wireless communication device (DT
E) By using the present invention in E), various types of power consumption such as a single-function card to a multi-function card, a combined card such as a telephone card and a commuter pass or a ticket, an electronic money card, etc. A variety of portable wireless communication devices (DTEs) can be centrally processed by the same base station communication device (DCE), which is effective in the fields of the information communication industry and electronic commerce.

[0003] Portable wireless communication equipment (DTE) with high security has been used in place of magnetic cards. In a portable radio communication device (DTE), power to an internal integrated circuit portion is supplied from a base station communication device (DCE) using electromagnetic coupling, and at the same time, is shared for the purpose of mutual communication. Increasing the supplied power within this operable communication range not only violates laws and regulations such as the Radio Law, but also has an effect on surrounding electronic devices and cannot be increased unnecessarily. In addition, since the necessary and sufficient communication range differs depending on the application, the base station communication device (DC) depends on the characteristics and use of the portable radio communication device (DTE) used.
The power supplied from E) needs to be individually adjusted, and one base station communication device (DCE) cannot cope with many portable wireless communication devices (DTE). Further, in a situation where one portable wireless communication device (DTE) is used for multiple purposes, the circuit size of the integrated circuit unit increases, so that the required operating power also increases, and the importance of controlling the supplied power increases. I do.

[0004]

SUMMARY OF THE INVENTION A portable radio communication device (D
TE) can be operated even in a state where it is operable from the base station communication device (DCE) even if it is within a communication range operable from the base station communication device (DCE). In addition, it has features such as being resistant to moisture and dust because there are no electrical terminals on the surface of communication equipment, and having high security because the stored contents are closed inside, so it is expected to be applied to a wide range of applications. ing. On the other hand, when there are a plurality of portable radio communication devices (DTEs) within the communication range of the base station communication device (DCE), it is possible to simultaneously communicate with any of the portable radio communication devices (DTEs).
The inconvenience that a communication partner cannot be specified may also occur.

For example, assuming that a plurality of public telephones use a portable radio communication device (DTE), if the communication range with a base station communication device (DCE) is too wide,
In the worst case, a portable wireless communication device (DT
There is a possibility that the call fee will be deducted from E).
This problem depends on the purpose / use of the base station communication equipment (DC
The problem can be solved by minimizing the communication range of E) and limiting the corresponding portable radio communication equipment (DTE) to each application. However, in this case, one base station communication equipment (DCE) can be used for multiple purposes and many. The disadvantage is that the future scalability to accommodate different types of portable radio communication equipment (DTE) is destroyed.

[0006] In addition, a portable wireless communication device (DTE) incorporates a compatibility mechanism due to standardization of communication procedures, but the power consumption of the portable wireless communication device (DTE) greatly depends on the circuit size of an IC chip. Therefore, power consumption tends to increase as a high-performance multipurpose portable wireless communication device (DTE). Therefore, when a low power portable radio communication device (DTE) having only a simple function is held over a base station communication device (DCE) corresponding to high power consumption,
Excessive power is supplied, and it is assumed that the IC chip generates heat and in extreme cases, breaks.

Further, as described above, a base station communication device (DCE) for a portable radio communication device (DTE) must set power supply so that a plurality of portable radio communication devices (DTE) can be used simultaneously. Therefore, the mismatch of the power supply between the base station communication device (DCE) and the portable radio communication device (DTE) is more serious. Making a mobile radio communication device (DTE) to withstand overload can be improved by improving the design and heat radiation of the integrated circuit unit, but this increases the size and increases portability and manufacturing costs. That could be a thing.

The present invention has a selective power supply circuit inside a portable radio communication device (DTE), consumes a minimum amount of power in an initial operation state, and depends on the application.
An object of the present invention is to realize a communication device having a mechanism for controlling power used by a TE) and requesting a base station communication device (DCE) with a power control circuit to increase output within a range of laws and regulations. .

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable radio communication device in which communication between a base station communication device (DCE) and a portable radio communication device (DTE) is started in an initial state. (DTE) to limit the operating area of the integrated circuit to the minimum necessary, and to base station communication equipment (DCE)
Can also be solved by minimizing the power supplied from the system. Then, when the operation is shifted to the operation of the extended function unit in the integrated circuit in accordance with the versatile use after the mutual authentication, the portable wireless communication device (DTE) obtained at the time of the mutual authentication is used.
A request is made to the base station communication equipment (DCE) with a power control circuit to increase the supply power based on the supply power requirement. As a result, it is possible to prevent the portable radio communication device (DTE) from being damaged due to inadvertently excessive power transmission and the occurrence of interference electromagnetic waves to other devices.

[0010] As described in claim (1), scalability and multi-functionality are killed by having a power control mechanism in both a portable radio communication device (DTE) and a base station communication device (DCE). Instead, one base station communication device (DCE) can communicate with a plurality of portable wireless communication devices (DTE).

[0011] As described in claim (2), the communication between the portable radio communication equipment (DTE) and the base station communication equipment (DCE) makes the minimum power transmission in the initial state. Depending on the function of the portable radio communication equipment (DTE), by increasing the power transmission, carelessly avoiding the damage of the portable radio communication equipment (DTE) due to excessive power transmission and the generation of electromagnetic interference to other equipment Can be.

As described in claim (3), by dynamically allocating the operation state of the circuit inside the portable radio communication device (DTE), it is possible to contribute to a reduction in power consumption and a reduction in transmission power. it can.

[0013] As described in claim (4), the portable radio communication equipment (DTE) and the base station communication equipment (DCE) control the power transmission amount by communication, so that the communication device can be used efficiently. Yes, and does not limit future expansion applications.

According to a fifth aspect of the present invention, by storing an optimum operation state in a storage unit inside a portable radio communication device (DTE), a high-speed circuit unit power allocation and a base station communication device can be performed. (DCE).

According to a sixth aspect of the present invention, when the base station communication equipment (DCE) has the power control circuit section,
In the initial state, the minimum power required for mutual authentication with the portable wireless communication device (DTE) is supplied, and in the extended operation state, power transmission according to the function of the portable wireless communication device (DTE) can be performed. .

As described in claim (7), the portable radio communication equipment (DTE) and the base station communication equipment (DCE) with a power control circuit have sense coils for measuring the electric field strength, so that the portable radio communication equipment can be overloaded. It is possible to avoid damage to the communication equipment (DTE) and to use the communication equipment (DTE) within the electromagnetic wave emission regulation range according to laws and regulations.

As described in claim (8), by providing an overload avoiding circuit inside the portable radio communication device (DTE), the internal resistance of the power receiving circuit is increased, and the load is increased or decreased by increasing or decreasing the voltage. Is changed, it is not necessary to internally consume excessive power, and data protection of the integrated circuit unit is enabled.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 A portable radio communication device (DTE) according to the present invention has an integrated circuit (ITE) as shown in FIG.
C) and an antenna for power transmission and communication.
As shown in FIG. 2, this integrated circuit unit supplies power to a standard portable wireless communication device (DTE) within a minimum communication range.
Is divided into a basic area that provides the minimum state (initial state) that is required and an extended area that is used depending on the function. The integrated circuit in the basic area shown in FIG. 2 includes a portion that is responsible for communication and processing, a high-frequency processing unit that performs power conversion and communication, a storage circuit unit, and a power control circuit unit that selectively supplies power.

As shown in FIG. 3, a portable radio communication device (D
When the base station communication device (DCE) communicates with the base station communication device (DCE), the base station communication device (DCE) communicates with the portable radio communication device (DTE).
In the situation until the presence of the wireless communication device is recognized, the circuit in the basic area operates with minimum power consumption, and after the initial communication with the portable radio communication device (DTE) is completed, if necessary, the base station communication device ( DCE) increases the power transmitted to the band wireless communication device (DCE).

A series of operation procedures will be described with reference to a flowchart of FIG. First, a request command for starting communication is transmitted from the base station communication device (DCE) to the portable radio communication device (DT).
E) (101). In response, the portable radio communication device (DTE) transmits an ID (authentication identifier) to the base station communication device (DCE) (103), and the base station communication device (DTE).
CE) based on this information
The type is confirmed and the ID is subsequently confirmed (104). Also,
Similarly, the portable radio communication device (DTE) authenticates the base station communication device (DCE) (105). Next, the application possessed by the portable radio communication device (DTE) is queried, and the one that matches the application that the base station communication device (DCE) can execute is examined (106, 107). Further, after selecting the application, the base station communication device (DCE) instructs the portable radio communication device (DTE) to switch the power transmission mode corresponding to the application, and the portable radio communication device (DTE) corresponding to the application is required. The supply power is increased or decreased to a level (extended operation state) (108). The portable radio communication device (DTE) temporarily supplies current to the overload avoidance circuit when excess power is transmitted in response to an increase or decrease in supply power, and then the extended area stored in the storage circuit unit. , An area in the integrated circuit which has been inactive up to that point is made active, or an active area is dynamically allocated to the inactive state. If there is a change in the application, the supply power is increased or decreased again to the corresponding level. After the service ends, the portable radio communication device (DTE) reports the end of communication to the base station communication device (DCE). At this time, the base station communication device (DCE) returns to the initial state by the power supply of the base station communication device (DCE). Is returned (112).

[Embodiment 2] When a portable radio communication device (DTE) is placed within the communication range of a base station communication device (DCE), a nearby electromagnetic field changes depending on the load. That is, when there is one portable wireless communication device (DTE) and when there are a plurality of portable wireless communication devices (DTE), the nearby electromagnetic field naturally changes. This state is shown in FIG. As a result, a plurality of portable wireless communication devices (DTE)
The power received by each unit decreases, and in extreme cases, the operation of the portable radio communication device (DTE) becomes unstable or communication becomes impossible. In such a reduced power situation, if the base station communication equipment (DCE)
When communication between the mobile radio communication device (DTE) and the mobile radio communication device (DTE) is still established, for example, by adding information indicating that the power is in a low state to a response command from the mobile radio communication device (DTE), The station communication device (DCE) can increase the supplied power or perform the process of optimizing the supplied power with the portable wireless communication device (DTE). For this purpose, a function of monitoring the state of the supplied power received by the mobile communication device (DTE) is required. If the load becomes excessively large such that communication between the base station communication device (DCE) and the portable radio communication device (DTE) becomes impossible, the above method cannot be used.

However, if the base station communication device (DCE) itself can sense the electromagnetic coupling load state, the power supplied by the base station communication device (DCE) alone can be used without any request from the portable radio communication device (DTE). Can be started.

That is, as shown in FIG. 6, a base station communication device (DCE) has a sensor having a power receiving function equivalent to that of a portable radio communication device (DTE) inside, separately from a transmission function, so that a portable radio communication device is provided. It becomes possible to detect the excess or deficiency of the supplied power in the communication device (DTE) and adjust the supplied power. The function of sensing the supplied power of the portable radio communication device (DTE) is also effective when the received power is larger than necessary. If the sense function recognizes that the supplied electromagnetic field is excessive, if the load is changed by increasing the internal resistance of the power receiving circuit, raising or lowering the voltage, etc., the excessive power will not be consumed internally. It can be protected from destruction. At the same time, base station communication equipment (DC
Needless to say, it is requested to reduce the supply power by communication with E). Furthermore, base station communication equipment (DC
E) can easily know whether or not the load is increased due to the presence of a plurality of portable wireless communication devices (DTE) by sensing the electromagnetic coupling load state as shown in FIG. Regardless of the establishment of communication with the (DTE), it is possible to always supply appropriate power.

Further, in a state where there is no load on the portable radio communication device (DTE), the supplied power is reduced.
Even when the electric field strength is legally regulated, it is possible to communicate with many portable radio communication devices (DTEs) within the restrictions while changing the communication range according to the application.

FIG. 8 shows an example of a series of operation procedures. First, a base station communication device (DCE) and a portable radio communication device 1 (DTE
When another portable wireless communication device 2 (DTE2) appears while the communication is established during 1) (201), the power supplied to each portable wireless communication device (DTE) decreases (202, 203). Therefore, each portable radio communication device (DTE) requests the base station communication device (DCE) to increase the transmission power (204). In response to this, the base station communication device (DCE) increases the power, but the output is detected by the sense coil of the base station communication device (DCE) and the respective portable wireless communication device (DTE), and the state is optimized. Give feedback to become. If it exceeds the appropriate range, the power supplied to the base station communication equipment (DCE) is reduced (208), and if it is within the appropriate range, service provision is started. In addition, each portable wireless communication device (DT
If the power required by E) cannot be obtained, one of them is put into a standby state, and the base station communication equipment (DCE) controls the communication and the power transmission, establishes communication with both, and provides a desired service. provide.

[0026]

As described above, the present invention has a power control circuit unit in a portable radio communication device (DTE),
Wireless communication with a mechanism that consumes a minimum amount of power in the initial operating state, controls the power used by the card depending on the application, and requires the base station communication equipment (DCE) to increase the power within legal regulations Implement the device.

[Brief description of the drawings]

FIG. 1 shows a schematic diagram of a portable radio communication device (DTE) according to the present invention.

FIG. 2 is a diagram showing a configuration of an integrated circuit (IC) unit inside a portable wireless communication device (DTE) in FIG. 1;

FIG. 3 is a diagram illustrating a communication state between a portable wireless communication device (DTE) and a base station communication device (DCE).

FIG. 4 is a diagram illustrating communication and power control procedures between a portable wireless communication device (DTE) and a base station communication device (DCE).

FIG. 5 is a diagram illustrating a communication state between a plurality of portable wireless communication devices (DTE) and a base station communication device (DCE).

FIG. 6 shows a portable wireless communication device (D) having a sense coil.
It is a schematic diagram of TE).

FIG. 7 shows a base station communication device (DC) having a sense coil.
It is the schematic of E).

FIG. 8 is a diagram illustrating a power control procedure between a portable wireless communication device (DTE) and a base station communication device (DCE).

[Explanation of symbols]

DTE Portable Wireless Communication Equipment (Data Terminating Equipme
nt) DCE base station communication device (Data Circuit Terminating E
quipment)

Claims (8)

[Claims] 1. A base station communication device includes a wireless transmission / reception mechanism, a service providing mechanism, a storage processing mechanism, and a supply power control mechanism, and a portable wireless communication device includes a wireless transmission / reception mechanism, a service providing mechanism, a storage processing mechanism, and a power control mechanism. Communication between the base station communication device and the portable wireless communication device with respect to the operating power required by the portable wireless device, and the amount of control of the base station communication device by the power control mechanism based on the result of the communication. A base station communication device, comprising: supplying unnecessary power to at least one portable wireless device by supplying unnecessary power to the portable wireless device via electromagnetic induction to reduce unnecessary electromagnetic waves radiated to the outside. To supply power to a portable wireless communication device from a computer. 2. The base station communication according to claim 1, wherein basic operations such as communication establishment and mutual authentication are performed with minimum power consumption in an initial communication state between the portable wireless communication device and the base station communication device. A method for supplying power from a device to a portable wireless communication device. 3. The power supply from a base station communication device to a portable wireless communication device according to claim 1 or 2, wherein a use area of a circuit inside the portable wireless communication device is switched according to an application of the portable wireless communication device. Method. 4. The portable radio communication device and the base station communication device each have a sense coil, and the base station communication device changes a power supply amount by radio wave transmission based on a detection result. 4. The method for supplying power from a base station communication device to a portable wireless communication device according to item 3. 5. The portable radio communication device according to claim 1, further comprising a storage unit for indicating power consumption for each application and each operation area, and realizing a necessary operation power instantaneously. A portable wireless communication device for implementing the method for supplying power from a base station communication device to a portable wireless communication device according to any one of claims 1 to 4. 6. The power control mechanism according to claim 1, wherein said base station communication device has a power control mechanism for shifting to a desired power supply state in response to a change in power request from said portable wireless communication device.
4. A base station communication device for performing the method for supplying power from a base station communication device to a portable wireless communication device according to any one of the above items 4. 7. The base station communication device and the portable wireless communication device have a sense coil for measuring electric field strength.
A base station communication device and a portable wireless communication device for implementing the method for supplying power from the base station communication device to the portable wireless communication device according to any one of the above-described items. 8. The portable radio communication device according to claim 1, wherein the portable radio communication device has an overload avoidance circuit. Wireless communication device.