JP2002044729A - Portable wireless terminal - Google Patents

Abstract

(57) [Summary] [Problem] To make available communication services and communication systems,
Provide a portable wireless terminal that a user can check immediately. SOLUTION: A communication service provided by a communication system which can be used by a portable wireless terminal is analyzed, and the communication service is displayed in real time within a communication capability of the terminal.
When there are a plurality of available communication systems, a communication service is displayed for each of these communication systems.
Further, a radio wave reception level is displayed for each of the plurality of communication systems.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable radio terminal capable of notifying a user of, for example, an available communication service or a communication system currently in use.

[0002]

2. Description of the Related Art In recent years, various types of portable wireless terminals, including portable telephone terminals, have been widely used not only for business use but also for individuals. By doing so, it is possible to receive various services such as packet communication as well as voice communication. In addition, with the development of communication technology, various types of wireless communication systems such as regions, communication carriers, and services have been operating at the same time, and a plurality of wireless systems can be used by the same terminal. .

[0003] At present, many wireless terminals use a radio wave reception level, which is a measure of the radio wave reception level, as a means for allowing a user to recognize a radio system currently available or to know an available service. The status is displayed on a display unit such as an LCD. As a means for confirming the service currently being communicated by the user, for example, a notification method such as blinking characters during packet communication is used.

[0004]

However, it cannot be denied that the diversification of services and systems described above is a factor of confusion for users. In addition, portable wireless terminals such as mobile phones have improved portability due to their small size and light weight. Is hard to say.

Further, as described above, the above-described notification method for visually displaying the status of the radio wave reception level on a display unit such as an LCD, or for confirming the service currently being communicated by the user. Then, the communication status of all services cannot be displayed in an integrated manner. In addition, the above-described conventional method has a problem that it is difficult for a user to completely grasp the communication status because the radio wave reception levels of a plurality of wireless systems cannot be displayed simultaneously.

On the other hand, there is a demand for users to easily recognize the communication state of the portable wireless terminal, available services, and the like for diversified services, systems, and applications. At the same time, in order to meet the need for miniaturization, efficient mounting of display means is required.
For this purpose, the user needs to have a means of easily identifying the communication state and available services by looking at the portable wireless terminal. However, in the conventional method of simply displaying the current reception level, for example, a circuit switching method is used. There is also a problem that it is difficult for the user to easily confirm the currently available services, for example, when the radio wave level for the service is different from the radio wave level for the packet communication.

[0007] Further, even if the reception level is sufficient, it is not always the case that the service can be provided. For example, depending on communication regulations and subscriber contract conditions, services may not be received even if the terminal reception level is sufficient.

[0008] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a portable wireless terminal that allows a user to immediately confirm a communication service or a communication system that can be actually used by the user. It is to be.

Another object of the present invention is to provide a portable radio terminal capable of arbitrarily selecting a usable communication system and a provided communication service.

Another object of the present invention is to provide a portable radio terminal which allows a user to confirm a communication service currently used by a user among the available communication services and the like.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a portable radio terminal that performs communication based on a predetermined communication capability, and a communication provided by a communication system usable by the portable radio terminal. Provided is a portable wireless terminal comprising: an analysis unit for analyzing a service; and a display unit for displaying the analyzed communication service in real time within the range of the communication capability.

Preferably, when there are a plurality of available communication systems, the analyzing means analyzes each of the communication services provided by the plurality of communication systems, and the display means comprises: And displays the analyzed communication service in real time.

Preferably, the apparatus further comprises means for determining a radio wave reception level in the portable radio terminal for each of the plurality of communication systems, and wherein the display means displays the determined radio wave level for each of the plurality of communication systems. Displays the reception level in real time.

[0014] Preferably, the display means displays the communication service currently used by the portable wireless terminal in real time. The display means displays the communication system currently used by the portable wireless terminal in real time.

Another aspect of the present invention is a portable wireless terminal which performs communication based on a predetermined communication capability, a means for recognizing a plurality of communication systems usable by the portable wireless terminal,
A portable device comprising: means for determining a radio wave reception level in the portable radio terminal for each of the plurality of recognized communication systems; and means for displaying the determined radio wave reception level in real time for each of the plurality of communication systems. Provide a wireless terminal.

Preferably, another invention further comprises means for selecting the communication system based on the radio wave reception level. The display means displays the communication system currently used by the portable wireless terminal in real time.

[0017]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a communication system that provides different communication services to users. The communication system shown in FIG.
7 so that a different communication service can be provided, a circuit-switched communication network (hereinafter abbreviated as CS network) 101, a circuit-switched communication radio switch (hereinafter abbreviated as C-MSC) 102, and a circuit-switched communication radio base station. (Hereinafter abbreviated as CS base station) 1
03, packet communication network (hereinafter abbreviated as PS network) 104,
Wireless switch for packet communication (hereinafter abbreviated as P-MSC)
105, a wireless base station for packet communication (hereinafter abbreviated as PS base station) 106. The two communication paths shown in FIG. 1 may be the same wireless system or different wireless systems.

FIG. 2 is a block diagram showing the internal configuration of the portable radio terminal used in the communication system according to the present embodiment. A portable wireless terminal may include a plurality of receiving units and transmitting units in order to support a plurality of wireless systems, but here, an example in which one system of receiving unit and transmitting unit corresponds to a plurality of communication systems will be described. I do.

In the reception system of the portable radio terminal shown in FIG. 2, a reception signal received via antenna 201 is supplied to reception RF section 203 through antenna duplexer 202. The reception RF unit 203 performs necessary band limiting processing and the like so that the supplied reception signal has an appropriate level, and supplies the processed signal to the mixer 204.

The mixer 204 mixes the signal from the local oscillator 211 whose oscillation frequency is controlled and the output signal from the reception RF unit 203 in order to convert the reception frequency of the reception signal to a predetermined frequency. The output signal from the mixer 204 is subjected to A / D (analog / digital) conversion in the reception IF unit 205 to form I and Q digital data having a constant bit rate. The I and Q digital data are received by a reception demodulation unit 20 via a reception level detection unit 250 described later.
6.

The receiving / demodulating section 206 removes the influence of fading or the like from the supplied I and Q digital data, determines the type of the received signal, performs de-interleaving and error correction, and executes an appropriate decoding process. To separate voice data from other communication data (non-voice data such as control data). Further, the reception level detection unit 250
In parallel with this decoding processing, the current radio wave state is detected and converted to a value that can be controlled by the control unit 221.

Of the data separated by the receiving / demodulating unit 206, the audio data is sent to the audio decoding unit 207.
Other communication data is supplied to the communication data decoding unit 210.

Normally, audio data is compressed and sent in blocks for each burst. Therefore, the audio decoding unit 207 expands and decodes the audio data, and then performs D / A (digital / analog) conversion according to the audio sampling rate. The D / A converted analog audio signal is power-amplified by the speaker amplifier 208 and then supplied to the speaker 209. As a result, a sound corresponding to the analog sound signal is emitted from the speaker 209.

On the other hand, the communication data such as packet data sent to the communication data decoding section 210 is returned to the final original data there. Then, the decrypted communication data is sent to the control unit 221. Note that communication data and the like can be sent to an external interface (external I / F) 226 via the control unit 221. An external device such as a personal computer is connected to the external I / F 226, for example.

Next, the transmission system of the portable radio terminal will be described. The microphone 218 in FIG. 2 converts the collected sound into an analog sound signal, and amplifies the analog sound signal to a required voltage by the microphone amplifier 217. The amplified analog audio signal is output to the audio encoding unit 21.
6.

The audio encoding unit 216 first performs A / D conversion on the analog audio signal at an appropriate sampling rate, and digitizes the input analog audio signal. Then, the audio encoding unit 216 encodes the digitized audio signal by a predetermined encoding method, compresses the encoded audio signal, and compiles the signal into a block that matches the burst signal in the transmission RF signal.

On the other hand, digital data input from an external device such as a personal computer through the external I / F 226 is collected into an appropriate block by the communication data encoding unit 219. Then, output data from the voice encoding unit 216 and the communication data encoding unit 219 are combined by the transmission modulation unit 215, and output therefrom as I, Q digital data having a constant data rate.

The I and Q digital data are transmitted to the transmission IF unit 21
After being converted into an analog modulation signal by the D / A conversion in 4, the signal is mixed with a signal for conversion from the local oscillator 211 in the mixer 213 in order to convert the signal into a desired transmission frequency. Then, the signal converted to the desired frequency is
In order to obtain necessary transmission power, the power is amplified by the transmission RF unit 212 and then radiated (transmitted) from the antenna 201 to the space via the duplexer 202.

The control section 221 is composed of, for example, a microprocessor (MPU), and is a section that controls the entire portable radio terminal. The control unit 221 includes a level processing unit 221a, a system processing unit 221b, and a service processing unit 221c described below.

A ROM 222, a RAM 223, and the like are connected to the control unit 221. The ROM 222 stores in advance data necessary for controlling the portable wireless terminal, such as programs executed by the control unit 221 and fonts for display. It is remembered.

The RAM 223 is mainly used as a work area (work area). When the control unit 221 is executing a program, the RAM 223 stores data and the like in the middle of calculation as needed, and stores data in the portable radio terminal. This is for temporarily storing data exchanged between the devices. The reception level of the radio wave detected by the reception level detection section 250 is stored in the RAM 223 by the control section 221.

Even when the power of the portable radio terminal is turned off, the EEPROM 224 stores, for example, setting conditions (setting parameters) immediately before the power is turned off, so that the next time the power is turned on, the EEPROM 224 can be used in the same setting state as before the power was turned off. Memory. Here, in addition to the setting parameters, the EEPROM 224 also stores a radio reception level, which will be described later, and a table of combinations of display methods.

The control unit 221 further has a key operation unit 2 via a key interface (key I / F) (not shown).
25 are connected. The key operation unit 225 functions as a user interface provided with, for example, a numeric keypad, an off-hook key, an on-hook key, and various function keys.

The display unit 2 connected to the control unit 221
Reference numeral 27 denotes, for example, a liquid crystal display (LCD) or the like, on which display data from the control unit 221 is visually displayed. Here, it is possible to notify a user of a display of a reception level, communication service information, and the like, which will be described later, through the display unit 227.

In addition to the external interface (external I / F) 226, the portable wireless terminal includes a card interface (card I / F) (not shown) and a display interface (L).
CDI / F). A card drive is connected to the card I / F, and the card drive reads and reads out user's personal information such as a user ID and a telephone number stored in a user ID card (SIM card) loaded therein. Information is supplied to the control unit 221 through the card I / F, or the information is supplied from the control unit 221 to the card I / F.
, Information can be written to the SIM card.

The portable wireless terminal is further used as a ringer for notifying a user of an incoming call or warning by sound, a vibrator for notifying the incoming call or warning by vibration, notifying of the incoming call, or used as illumination (illumination). Light emitting diode (LED).

FIG. 3 is a display example on the display unit of the portable radio terminal according to the present embodiment. Here, a portable wireless terminal supporting a plurality of wireless systems detects a reception level for each wireless system, and displays the result on a display screen of a display unit. That is, as shown in FIG.
The antenna bar display 3 is displayed on the display screen 301 (see FIG. 2).
02 is displayed to indicate the reception level of each wireless system.

Specifically, PDC (Personal)
Digital Cellular) system and CDM
A (Code Division Multiple)
In the case of a portable wireless terminal compatible with an (Access) system, a reception level is detected for each wireless system, and the detection result is displayed as an antenna bar display 302 as shown in FIG.

The antenna bar display 303 in FIG. 3 indicates that the radio wave reception level of the CDMA system at the point of use of the portable wireless terminal is lower than a certain level (a specific level is, for example,
This is a display example when the communication service cannot be received, that is, in the “out of service” state, and the PDC system has a good radio wave reception level.

On the other hand, the radio wave reception level of the CDMA system satisfies a certain condition, but when the radio wave reception level of the PDC system is poor, the PDC system cannot operate as shown in the antenna bar display 304 in FIG. The message “out of service area” is displayed so as to be understood by the user.

Here, a specific radio wave reception level will be described. FIG. 8 shows the relationship between the reception level of the radio wave detected by the portable wireless terminal according to the present embodiment and the antenna bar display. As shown in the figure, if the reception level (reception electric field strength) of the radio wave at that time has not reached 0 dB, the above-mentioned antenna bar display 302 is "out of range". In addition, the reception level is 0 dB or more but 10 dB
If the number of bars is not reached, the number of displayed bars is one.

Thereafter, if the reception level L is 10 dB ≦ L <2
When it is within the range of 0 dB, the antenna bar display 302
And two bars are displayed, and the reception level L is 20 dB ≦ L
In the case of, the number of displayed bars is three. When the radio wave condition is good at a certain point, the situation may not be good for the packet-switched communication service (PS) even though the circuit-switched communication service (CS) is good. Therefore, in the present embodiment, the detection of the reception level of the radio wave and the display of the antenna bar are performed for each of CS and PS.

FIG. 4 shows another display example on the display unit of the portable radio terminal. That is, in FIG. 4, in the same wireless system or two different wireless systems, the display screen of the portable wireless terminal corresponding to both the circuit-switched communication service and the packet-switched communication service displays various information. It shows the situation.

In the case of this example, as shown in FIG. 4, an antenna bar display 402 is arranged in a display screen 401 to display a reception level and a communication service for each wireless system. The display 402 indicates all communication speeds and services supported by the portable wireless terminal, and means a default screen. That is, here, the radio wave reception level for the packet communication service, the reception level for the circuit switching communication service, and the type of communication service supported by the portable wireless terminal for each communication service are displayed.

FIG. 9 shows that the portable wireless terminal is managed (supported).
Indicates the type of communication service to be performed. The communication service shown in the figure is stored in the form of a table in the ROM 222 or the EEPROM 224 here. It should be noted that not all communication services supported by mobile wireless devices are available at all times,
That is, a service supported in advance and a currently available communication service are stored in a table format in association with each other. In other words, what kind of service is available at that time and the capability of the portable wireless terminal are matters of another dimension.

The “service list” 91 in FIG. 9 is a list of all services that can be provided by the communication system.
Is a function originally possessed by the portable wireless terminal. For example, some terminals do not have a packet communication function.

Columns 93 and 94 show what kind of service the portable wireless terminal can receive at that time (services available). In the illustrated example, a circuit switching network (CS network)
Allows half-rate voice communication, circuit-switched data communication, and short message service (SMS). In a packet switching network (PS network), 32k
bps, 64 kbps, 128 kbps, 256 kbp
s, 384 kbps packet communication can be used.
These are independent of the capabilities of the portable wireless terminal.

Although the CS network and the PS network are shown in the example of FIG. 9, the present invention is not limited to these, and is applicable to a plurality of other wireless systems (for example, PDC and cdmaOne (registered trademark)). , A table of available services is created in a similar manner.

Therefore, returning to FIG. 4, the antenna bar display 403 indicates the service that can be actually received at that time. For the packet communication service, 32 kbp
Only s communication and 64 kbps communication can be supported. For circuit-switched communication services, refer to “Line” in the figure.
The support status is indicated by an antenna bar or the like corresponding to the character display.

That is, the antenna bar display 403 for the circuit-switched communication service shows that the radio wave condition at the current time is not good, but the portable radio terminal has a half-rate (half)
rate) voice communication service (that is, a service for making a call using only half the normal voice data information) and SM
This indicates that the device exists in an area that supports only S (Short Message Service).

When the portable radio terminal in the state of the antenna bar display 403 moves, it is conceivable that the radio wave condition and the communication service supported by the surrounding base stations will change. For example, the antenna bar display 404 indicates that the radio wave reception level for the circuit-switched communication service is "out of service", and the user can understand that the radio wave condition for the circuit-switched communication service is not good.

At the same time, in the case of the packet communication service, it can be understood from the radio wave condition indicated by the antenna bar that the service can be used. Therefore, the user can select the use of the packet communication without any hesitation.

Therefore, when the user has actually selected a packet communication service and is using it, “Packet” and “32” are displayed in the antenna bar display 404.
Is highlighted. By displaying in this manner, the user can easily know that the 32 kbps packet communication service is currently used.

Note that even if the antenna bar display is as shown in the antenna bar display 403 in FIG. 4 and the radio wave condition is not good, the user can select the “line” “half” to select the line. Voice communication becomes possible according to the service provided.

When the portable radio terminal moves further, the radio wave condition changes. For example, in the case of a packet communication service, the available communication speed may change. In this case, as in the antenna bar display 405, the user is notified that the communication speed of the currently used packet communication service is 64 kbps, and the user can use the 128 kbps packet communication service if desired. I do.

As described above, displaying the currently available service and the radio wave reception level for each of a plurality of communication systems and communication services increases the convenience for the user. It is necessary to control the display contents in real time.

As described above, in the portable wireless terminal according to the present embodiment, the reception level detecting section 250 detects the radio wave reception level and controls the display of the value by the control section 2.
21 is performed by the level processing unit 221a. In addition, because mobile wireless devices know what types of services are currently available,
The mobile radio terminal itself can use the CS base station 103 or P shown in FIG.
It is necessary to analyze the system information transmitted from the S base station 106. This analysis is performed by the system processing unit 221b of the control unit 221.

FIG. 7 shows an example of system information transmitted from the base station. In general, the system information includes the names of communication systems and communication service providers, as well as the contents of communication services that can be supported by the communication system in the region (in the example shown in FIG. 7, a circuit-switched communication service (CS)). , Packet switching communication service (PS) and the maximum communication speed. And the portable wireless terminal,
These pieces of information transmitted from the base station are periodically received.

FIG. 5 is a flowchart showing a display control procedure in the portable radio terminal according to the present embodiment. In step S501 of the figure, the reception level detection unit 250 of the portable wireless terminal detects the reception level of the radio wave for each communication system and communication service based on the system information already possessed by the terminal. Then, in step S502, the control unit 221 based on the level detected in step S501.
After determining the number of antenna bars to be displayed with reference to the table shown in FIG. 8, the level processing unit 221a displays the determined number on the display screen.

In step S 503, system processing section 221 b of control section 221 determines whether or not the portable radio terminal has received the system information transmitted from the base station based on the communication data from communication data decoding section 210. judge.
If system information has been received, step S504 is performed.
In step S505, the content of the information is analyzed.
Then, the analysis result is stored in the EEPROM 224 as a service that can be used by the portable wireless terminal.

The contents of the columns 93 and 94 shown in FIG. 9 are updated by the above-described storage processing, and the latest service that can be used by the portable wireless terminal at that time is stored and held in the portable wireless terminal. Will be.

As described above, every time the system information is received, the analysis is performed only when a plurality of systems are operated at the location where the portable wireless terminal is located. This is for obtaining information and grasping the service contents that can be received at that point.

In step S506, the service processing unit 221c of the control unit 221 creates display data on a service which can be used by the portable radio terminal at present based on the analysis result of the system information, and displays it on the display unit. At 227, it is visually displayed in real time. As a result, the service content is realized for the user, and the reception sensitivity at that location can be known for each service.

If the user is currently using any service, the user is clearly shown the service in use by inverting the display of the antenna bar on the display unit 227 to identify the service not being used. Gives a different display. This display process is the process of “marking the currently used service” shown in step S507 of FIG.

In step S508, the control unit 221
It is determined whether or not the power of the portable wireless terminal is turned off (turned off), and the above processes are repeated unless the power is turned off. Conversely, when the power of the portable wireless terminal is turned on, the control unit 221 always executes the display control shown in FIG.

FIG. 6 shows a sequence when the portable radio terminal according to the present embodiment requests a communication service from the network. The user operates the key operation unit 225, for example.
When a predetermined communication service request is made (sequence SQ610) by inputting the number of the communication partner by dialing or the like, the portable radio terminal transmits radio waves and, in accordance with the service request, the CS base station 103 (In the case of a packet, a call request is made to the PS base station 106) (sequence SQ611).

At this time, since the user of the portable radio terminal already knows the available communication service by the display on the display unit 227, the above-mentioned call request includes a communication rate such as a half rate or a full rate. Needless to say,

The CS base station 103 uses the outgoing call request as information, and outputs the C-MSC (Mobile Switching) as information.
Center: mobile switching center) 102 (sequence SQ612). Thus, the C-MSC notifies (call request) the SC network, which is a collective term such as a fixed network switching center or another wireless switching system (sequence SQ613).

C-MSC 102 notifies portable radio terminal of normal start of call processing through CS base station 103 (sequences SQ614 and SQ615).
Further, CS base station 103 notifies portable radio terminal 107 of a radio communication CH setting request to open a radio channel for communication (sequence SQ616). The portable radio terminal 107 receiving this setting request and the CS base station 10
3 synchronize with each other to open a wireless channel (sequence SQ617).

The portable radio terminal notifies the CS base station 103 that the radio communication channel has been opened normally and the radio status.
In sequence SQ618, CS
A wireless communication CH setting response is transmitted to the base station 103.

The above call request (sequence SQ613)
When the other terminal (called terminal) responds to the request, the CS network sends the C-MSC 102 and the CS base station 103 through the CS network.
The portable wireless terminal is notified of the call response (sequences SQ619, SQ620, SQ621). as a result,
In sequence SQ622, communication is started between the user's portable wireless terminal and the partner terminal.

As described above, according to the present embodiment, a plurality of radio communication services and radio communication systems at present, radio wave reception levels and available communication services for each of these communication applications, and By displaying the communication services inside in real time, the user of the portable wireless terminal can not only provide the types of communication services that are currently available, but also the reception levels of a plurality of communication services and communication systems, in other words, provide This makes it possible to easily and instantly recognize the quality of the communication service to be performed, and has the effect of increasing the convenience of communication service selection.

In addition to the available communication services,
By displaying the communication service that the user is currently using, the user can immediately recognize that the user is using the expensive communication service by mistake or that he / she has selected the wrong communication service. In addition to avoiding service selection contrary to the above, it is possible to prevent occurrence of a situation where an extraordinary communication fee is charged.

That is, by displaying the communication service currently in use at the same time, it is possible to determine whether or not communication intended by the terminal user is being performed. Whether or not you intend to request a high-speed communication service but do not use a low-speed communication service, or if you intend to make a voice call in a circuit-switched data communication state, etc. Can be confirmed, and meaningless high-speed communication can be prevented.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the above embodiment, the user selects a communication service, but the mobile wireless terminal itself determines the maximum communication capacity among the actual terminal communication capabilities based on the analysis result of the radio wave reception level. The speed (in the example shown in FIG. 9, “full rate” for circuit switching, and “512 kbps” for packet switching) may be selected.

[0076]

As described above, according to the present invention,
Analyze the communication service provided by the communication system that can be used by the mobile wireless terminal, and analyze the analyzed communication service,
By displaying in real time within the range of the communication capability of the portable wireless terminal, the user can immediately know the type of communication service that is currently available, and the convenience of selecting a communication service is improved.

According to another invention, when there are a plurality of available communication systems, each of the communication services provided by the plurality of communication systems is analyzed, and the analyzed communication services are provided in real time for each of the plurality of communication systems. By displaying, it is possible to immediately know the communication service available at the present time.

According to another aspect of the present invention, for each of a plurality of communication systems, a radio wave reception level in a portable radio terminal is determined, and the determined radio wave reception level is displayed in real time for each of the plurality of communication systems. so,
For each communication system, it is possible to instantly determine what quality of service can be used.

Further, according to another aspect of the present invention, the portable radio terminal displays the currently used communication service in real time, or displays the currently used communication system in real time, so that the user's intention is displayed. It is possible to determine whether or not communication is being performed, and the user can easily confirm an error in the use of the communication system and a selection error of the communication service.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a portable wireless terminal according to an embodiment.

FIG. 3 is a diagram showing an example of a display screen displaying a reception level for each wireless system.

FIG. 4 is a diagram showing an example of a display screen on which communication services and reception levels are displayed.

FIG. 5 is a flowchart showing a display control procedure in the portable wireless terminal according to the embodiment.

FIG. 6 is a diagram showing a sequence related to a communication service request from a portable wireless terminal to a network.

FIG. 7 is a diagram illustrating an example of system information transmitted from a base station.

FIG. 8 is a diagram illustrating a relationship between a radio wave reception level detected by the portable wireless terminal and an antenna bar display.

FIG. 9 is a diagram illustrating types of communication services supported by the portable wireless terminal.

[Explanation of symbols]

101: circuit-switched communication network (CS network), 102: circuit-switched communication radio switch (C-MSC), 103: circuit-switched communication radio base station (CS base station), 104: packet communication network (PS network), 105: Wireless switch for packet communication (P
-MSC), 106 ... Wireless base station for packet communication (PS)
Base station), 107: portable wireless terminal, 201: antenna,
202: antenna duplexer, 203: reception RF unit, 20
4, 213 mixer, 205 reception IF section, 206 reception demodulation section, 207 voice decoding section, 208 speaker amplifier, 209 speaker, 210 communication data decoding section, 2
11: Local oscillator, 212: RF transmitter, 214: IF
Unit, 215 ... transmission modulation unit, 216 ... voice coding unit, 21
7 Microphone amplifier 218 Microphone 219 Communication data encoding unit 221 Control unit 221a Level processing unit 221b System processing unit 221c Service processing unit 222 ROM 223 RAM 224
EEPROM, 225: key operation unit, 226: external interface, 227: display unit, 250: reception level detection unit,

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (12)

[Claims] 1. A portable wireless terminal that performs communication based on a predetermined communication capability, comprising: an analyzing unit that analyzes a communication service provided by a communication system usable by the portable wireless terminal; Display means for displaying the analyzed communication service in real time. 2. When there are a plurality of available communication systems, said analyzing means analyzes each communication service provided by said plurality of communication systems, and said display means displays said communication service for each of said plurality of communication systems. 2. The portable wireless terminal according to claim 1, wherein the analyzed communication service is displayed in real time. 3. The system according to claim 2, further comprising: means for determining, for each of the plurality of communication systems, a radio wave reception level in the portable wireless terminal; 3. The portable wireless terminal according to claim 2, wherein is displayed in real time. 4. The portable wireless terminal according to claim 1, further comprising a selection unit that arbitrarily selects the communication service based on a result of the analysis. 5. The portable wireless terminal according to claim 4, wherein said selecting means selects a maximum communication capability among said communication capabilities of said portable wireless terminal. 6. The portable wireless terminal according to claim 1, wherein the display unit displays a communication service currently used by the portable wireless terminal in real time. 7. The portable wireless terminal according to claim 2, wherein the display unit displays a communication system currently used by the portable wireless terminal in real time. 8. The portable wireless terminal according to claim 7, wherein said display means further displays a communication service currently used by said portable wireless terminal in real time. 9. A portable wireless terminal that performs communication based on a predetermined communication capability, means for recognizing a plurality of communication systems usable by the portable wireless terminal, and for each of the plurality of recognized communication systems, A portable radio terminal comprising: means for determining a radio wave reception level in a portable radio terminal; and means for displaying the determined radio wave reception level in real time for each of the plurality of communication systems. 10. The portable wireless terminal according to claim 9, further comprising means for selecting the communication system based on the radio wave reception level. 11. The portable wireless terminal according to claim 9, wherein the display unit displays a communication system currently used by the portable wireless terminal in real time. 12. The communication system according to claim 2, wherein the plurality of communication systems are communication systems classified according to a difference in a wireless communication system. Mobile wireless terminal.