JP2000216808A - Electronic mail receiving method, electronic mail transmitting method, gateway device and communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a responding time and a data transmitting time in an environment where a communication terminal equipment connected to a radio network transferring data by a hyper text transferring protocol transmits and receives an electronic mail with a computer network through a gateway device connected with the computer network transferring the electronic mail by a simple mail transferring protocol and with the radio network. SOLUTION: In the system control part I-MAX of the gateway device, in outgoing, a tag compressing part IM 4 compresses the tag of mark up language and a mail header reducing part IM 7 reduces the header items of the electronic mail. In incoming, a mail header adding part IM 8 adds the header items of the electronic mail.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device connected to a wireless network for transferring data by a hyper text transfer protocol, and a computer for transferring electronic mail by a simple mail transfer protocol. A gateway device connected to a network and the wireless network, an email receiving method for the communication terminal device to receive an email from the computer network via the gateway device, and the communication terminal device comprising the gateway The present invention relates to an e-mail transmission method for transmitting an e-mail to the computer network via a device.

[0002]

2. Description of the Related Art Conventionally, in the field of data communication,
Access a computer network such as the Internet or a LAN (Local Area Network) via a telephone network, and provide e-mail services and WWs on the computer network.
Technologies for using W (World Wide Web) services and the like are being developed. In particular, in recent years, with the spread of mobile phones and the like, technology for using the above various services via a mobile communication network has been actively developed. Also,
With the advancement of the functions of telephone terminals, products that include a WWW browser on the telephone terminal and allow browsing of the WWW only with the telephone terminal are commercially available.

[0003]

However, when connecting to a computer network via a mobile communication network, a narrow bandwidth and a large transmission delay become a bottleneck, and a response time and a data transmission time are shorter than a connection via a fixed network. It will be long. This has led to a delay in the operation of the application, which has been a factor that has discouraged users from receiving various services on the computer network via the mobile communication network. The longer time taken for the data communication process also means an increase in communication costs. However, to physically improve the narrow bandwidth and transmission delay of a mobile communication network requires enormous investment and large-scale environment maintenance, and it is not possible to immediately improve the environment.

The present invention has been made in view of the above circumstances, and a communication terminal device connected to a wireless network for transferring data by a hyper text transfer protocol converts an electronic mail into a simple mail. An electronic device that can reduce response time and data transmission time in an environment in which electronic mail is transmitted and received between a computer network and a computer network via a gateway device connected to a computer network and a wireless network that transfer data using a transfer protocol. Mail receiving method,
An object of the present invention is to provide an electronic mail transmission method, a gateway device, and a communication terminal device.

[0005]

According to an aspect of the present invention, there is provided an electronic mail receiving method, comprising: a communication unit connected to a wireless network for transferring data by a hyper text transfer protocol; An electronic mail receiving method in which a terminal device receives an electronic mail from the computer network via a gateway device connected to the computer network and the wireless network for transferring the electronic mail by a simple mail transfer protocol. Wherein the gateway device receives an e-mail transmitted from the computer network side by a simple mail transfer protocol, and the gateway device receives data received in the downlink receiving step. Ha A downlink transmission step of transmitting to the wireless network by a per text transfer protocol, and a terminal receiving step of receiving the data transmitted from the wireless network side by the communication terminal apparatus by a hyper text transfer protocol. A display step of displaying the data received by the receiving means.

According to another aspect of the present invention, there is provided an electronic mail transmitting method, comprising: a communication terminal device connected to a wireless network for transferring an electronic mail by a hyper text transfer protocol; Via a gateway device connected to the computer network and the wireless network for transferring electronic mail by a simple mail transfer protocol,
An email sending method for sending an email to the computer network, wherein the communication terminal device creates data having a destination address item, a source address item, and a title item; A terminal transmitting step of transmitting the data created in the creating step to the wireless network by a hyper text transfer protocol,
The gateway device, an uplink receiving step of receiving data transmitted from the wireless network side,
An upstream transmission step of transmitting the data received in the upstream reception step as electronic mail to the computer network by a simple mail transfer protocol.

In order to solve the above-mentioned problem, a gateway device according to a third aspect is a gateway device for realizing the electronic mail receiving method according to the first aspect, wherein the gateway device is a simple mail transfer. Downlink receiving means for receiving an e-mail transmitted from the computer network side by a protocol, and downlink data format converting means for converting data received by the downlink receiving means into data using a markup language And downlink transmission means for transmitting the data converted by the downlink data format conversion means to the wireless network according to a hyper text transfer protocol.

Further, in the gateway device, there is provided tag compression means for converting the tag of the markup language in the data whose format has been converted by the data format conversion means into a shorter character string which can be uniquely identified. The downward transmitting means may transmit the data, the tag of which has been converted by the tag compressing means, to the wireless network by a hyper text transfer protocol. Alternatively, further comprising a header item deletion means for deleting a preset header item from the data received by the downlink reception means, the downlink data format conversion means,
The data from which the header item preset by the header item deletion means has been deleted may be converted into data in a format using a markup language.

According to a sixth aspect of the present invention, there is provided a gateway apparatus for realizing the electronic mail transmission method according to the second aspect of the present invention, wherein the hypertext transfer method comprises: An upstream receiving means for receiving data transmitted from the wireless network side by a protocol, and converting the data received by the upstream receiving means into an electronic mail in a format which can be transferred by a simple mail transfer protocol It is characterized by comprising upstream data format conversion means for outputting, and upstream transmission means for transmitting the e-mail output from the upstream data format conversion means to the computer network by a simple mail transfer protocol.

Further, in the gateway device, tag decompression means for converting a shortened character string in the data received by the uplink reception means into a tag of a markup language, and electronically converting the data whose tag has been restored by the tag decompression means. Upstream data format conversion means for converting the data into data in the form of mail, wherein the upstream transmission means converts the data converted in format by the data format conversion means into an electronic mail by the simple mail transfer protocol. You may make it transmit to a network. Alternatively, there is provided header item adding means for adding a preset header item to the data whose format has been converted by the upstream data format converting means, and the upstream transmitting means adds the header item by the header item adding means. The obtained data may be sent to the computer network as an electronic mail by the simple mail transfer protocol.

According to a ninth aspect of the present invention, there is provided a communication terminal apparatus for realizing the electronic mail receiving method according to the first aspect, wherein the communication terminal apparatus includes a hypertext. -It is characterized by comprising receiving means for receiving data transmitted from the wireless network side by a transfer protocol, and display means for displaying the data received by the receiving means.

Further, in the communication terminal device, there is provided tag decompression means for outputting data obtained by converting a specific data string in the data received by the reception means into a corresponding markup language tag, The display means may display the data output from the tag decompression means in the form of an electronic mail in the wireless network.

According to another aspect of the present invention, there is provided a communication terminal device for realizing the electronic mail transmission method according to the second aspect, wherein the communication terminal device includes a destination address. Creating means for creating data having an item, a source address item, and a title item; and
Transmitting means for transmitting to the wireless network by a text transfer protocol.

Further, in the communication terminal device, there is provided tag compression means for outputting data obtained by converting a specific tag in the data created by the creation means into a corresponding specific data string, May transmit the data output from the tag compressing means to the wireless network by a hyper text transfer protocol.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is a communication system realized by applying the present invention to a mobile communication system connected to the Internet. Note that the present invention is not limited to such an embodiment, and various changes can be made within the scope of the technical idea.

A: Configuration of Embodiment First, the configuration of this embodiment will be described. A-1: System Configuration FIG. 1 is a block diagram showing a configuration of a communication system according to an embodiment of the present invention. In the figure, an MS is a mobile station that receives a packet communication service of a mobile packet communication network MPN. The mobile station MS is connected to the mobile packet communication network MPN shown in FIG. 1 and is also connected to a mobile telephone network (not shown), so that it can receive a mobile telephone service. As will be described in detail later, the mobile station MS
Is provided with components for performing a voice call, components for performing wireless communication with the base station BS, components for displaying various information, components for performing information input operations such as numeral input and character input, and the like. In addition, a microcomputer for controlling these components is built in. Further, the mobile device MS is equipped with software (so-called browser) for browsing document data, and is provided with an information provider (hereinafter, referred to as an information provider).
IP (abbreviated as IP) via the mobile packet communication network MPN to display an interactive screen.

The mobile packet communication network MPN includes a base station BS, a gateway server GWS, a subscriber database UDB, and a communication line connecting these. The base station BS has a radius of 500
The mobile stations MS are arranged so as to be divided in a range such as m, and perform wireless communication with the mobile station MS located in the wireless zone formed by each.

The gateway server GWS is a computer system provided in a mobile packet gateway relay exchange for interconnecting the mobile packet communication network MPN and another network such as the Internet INET, and has a different communication protocol between the networks. Perform the conversion. The conversion of the communication protocol will be described later in detail. Also,
The gateway server GWS controls various services described below in cooperation with the IP server W and the subscriber database UDB.

The subscriber database UDB holds a subscriber registration information file including registration information on subscribers of the mobile packet communication network MPN. FIG. 2 is a data format diagram illustrating the contents of the subscriber database UDB in the system. As shown in the drawing, the subscriber registration information file contains, for each subscriber of the mobile packet communication network MPN (that is, the user of the mobile station MS), each subscription such as the telephone number, name, and e-mail address of the mobile station MS. Attribute data indicating the attribute of the person is stored.

The IP server W is a server system operated by IP, and sends information to be provided to the user to the network. This IP server W is connected to the Internet IN
It is connected to the gateway server GWS via ET.

A-2: Communication Protocol Configuration Here, a communication protocol in the communication system having the above configuration will be described. FIG. 3 is a conceptual diagram partially illustrating a communication protocol hierarchy in the system. As shown in this figure, in the same system, in communication between a browser on the mobile device MS and an application on the IP server W, a communication protocol is converted by the gateway server GWS. Such conversion is performed because the communication protocol of a layer above the session layer (hereinafter, referred to as an upper layer) mounted on the IP server W is HTTP (Hyper Text Transfer Protocol) and SMTP (Simple Mail Transfer Protocol). The communication protocol of the layer below the transport layer (hereinafter referred to as the lower layer) is TCP / IP (Transmission Control Protocol / In).
Internet Protocol), whereas the upper layer communication protocol implemented in the mobile station MS is compatible protocol A
L, because the lower layer communication protocol is the simple protocol TL, which is different from each other.

The compatible protocol AL is a communication protocol compatible with HTTP, and is a general H protocol.
It has all the functions of TTP, and further has a function of notifying the arrival of an e-mail (to be described later). Also,
The simple protocol TL is a communication protocol that simplifies TCP / IP. This simple protocol TL is a communication protocol developed from the viewpoint that it is sufficient to provide a reliable transport layer only for the compatible protocol AL, and is a TCP / IP that assumes use of various upper layer communication protocols. It is a communication protocol with significantly reduced functions and procedures compared to. The reason why the simple protocol TL is implemented in the mobile device MS is a result of considering the bandwidth and transmission delay of the mobile packet communication network MPN and the processing capability of the mobile device MS.

In FIG. 3, the gateway server GWS
Implements a simple protocol TL and a compatible protocol AL for communicating with the mobile station MS, and TCP / IP, HTTP and SMTP for communicating with the IP server W.
That is, focusing on the communication between the mobile station MS and the IP server W, the gateway server GWS uses the simple protocol T
Conversion between L and TCP / IP, compatible protocols AL and HT
Conversion between TP and SMTP is performed. However, when the mobile station MS directly acquires the data on the IP server W (the IP server W receives the HTTP request, and
When a TP response is returned), the upper layer communication protocol is not converted in the gateway server GWS. This is because a device that implements the compatible protocol AL having all the functions of HTTP can pass through the data of HTTP.

A-3: Configuration of Gateway Server GWS (1) Overall Configuration FIG. 4 is a block diagram showing the configuration of the gateway server GWS in the same system. In the figure, the gateway server GWS includes a system control unit I-MAX, a customer information management unit U-MAX, an e-mail management unit M-MAX, and a bus BUS connecting these units.

The system control unit I-MAX controls the customer information management unit U-MAX and the electronic mail management unit M-MAX of the gateway server GWS, and performs communication protocol conversion between the mobile packet communication network MPN and the Internet INET. Function as an interface between networks. In addition, the customer information management unit U-MAX
Operates according to a request from the system control unit I-MAX. Specifically, it refers to the subscriber database UDB according to a request from the system control unit I-MAX, acquires information corresponding to the request, and obtains information corresponding to the request.
Return to

The e-mail management unit M-MAX is provided between the users of the mobile packet communication network MPN and the mobile packet communication network MP.
It mediates the exchange of e-mail between N users and Internet INET users. This e-mail management unit M-
MAX is provided with a mailbox for storing an e-mail to be sent and received at an e-mail address assigned to each user of the mobile packet communication network MPN. The “user of the Internet INET” here includes not only individuals but also the IP server W.

(2) Configuration of System Control Unit I-MAX FIG. 5 is a block diagram showing the configuration of the system control unit I-MAX in the gateway server GWS. As shown in this figure, the system control unit I-MAX
M1, tag compression unit IM4, inbound transmission unit IM5, outbound reception unit IM6, email header reduction unit IM7, email header addition unit IM8, outbound transmission unit IM9, tag conversion table TBL used in tag compression unit IM4, email header reduction It has a header reduction / addition list LST used by the section IM7 and the mail header addition section IM8, and a processing section IM3 for controlling the above sections.

In the figure, a tag conversion table TBL
Is used to reduce the amount of data to be transmitted by compressing HTML tags.
A one-to-one correspondence between a character string according to the notation of L (hereinafter, a full character string) and a preset short character string (hereinafter, abbreviated character string)
Are associated with each other. However, if the length of the full character string is sufficiently short, and the compression effect cannot be expected even if the tag is replaced with the shortened character string, the shortened character string is not defined. Which tag defines the abbreviated character string is a matter of design as appropriate, and is determined statistically and empirically in this embodiment.

The shortened character string has a shorter character string length than the full character string representing the same tag, and is created according to a specific format that can be distinguished from other information including various tags. This "specific format" is arbitrary, but here, H
A shortened character string such as "# A #" is assigned to a tag represented by a full character string "<CENTER>" in the TML notation. Here, “#” is an identifier indicating that “A” is a shortened character string and the start / end positions of the shortened character string.

On the other hand, the header reduction / addition list LST is
It lists items that can be reduced in the mobile packet communication network MPN among the header items of the e-mail transmitted using SMTP, and includes "FROM" indicating the source mail address and "TO" indicating the destination mail address. And header items (items indicating transmission route information and the like) excluding essential items such as "SUBJECT" indicating a title. By using the header reduction / additional list LST to reduce the header items of the e-mail, the mobile packet communication network MPN
The above traffic can be reduced.

The inward receiving unit IM1 is a mobile packet communication network M
It receives the data transmitted from the PN and supplies the data to the processing unit IM3. Further, the tag compression unit IM4 refers to the tag conversion table TBL, and refers to the tag conversion table TB.
If the full character string in L exists in the data supplied from the processing unit IM3, the full character string is converted into a shortened character string, and then the data is supplied to the inward transmission unit IM5.
In the tag compression unit IM4, a normal character “#” is converted into a character string “##”. Inward transmission unit I
M5 transmits the data supplied from the tag compression unit IM4 to the mobile packet communication network MPN.

The external receiving unit IM6 is connected to the Internet INE.
The data transmitted from T is received. If the upper layer communication protocol used at the time of reception is SMTP, the external reception unit IM6 transmits the data to the mail header reduction unit I.
If the data is HTTP, the data is supplied to the processing unit IM3. The mail header reduction unit IM7 refers to the header reduction / addition list LST, deletes the header items included in the header reduction / addition list LST from the data supplied from the external reception unit IM6, and then processes the data.
Supply to M3. The mail header adding unit IM8 is a processing unit I
After adding a header item included in the header reduction / addition list LST to the data supplied from M3, the data is supplied to the external transmission unit IM9. The external transmission unit IM9 includes the data supplied from the mail header addition unit IM8 and the processing unit I.
The data directly supplied from M3 is transferred to Internet I
Send to NET.

Next, the processing performed by the processing unit IM3 will be described in different cases. FIG. 6 shows a process performed by the processing unit IM3 of the gateway server GWS (when data is received from the mobile packet communication network MPN).
As shown in the figure, when data is received from the mobile packet communication network MPN side (that is, the internal receiving unit IM1), the processing unit IM3
It is determined whether or not the received data is a normal HTTP message (for example, a request using the GET method) (step S101), and the determination result is “YES”.
In this case, the message is directly supplied to the external transmission unit IM9, and the external transmission unit IM9 supplies the Internet I
Send to NET.

The result of the determination in step S101 is "NO"
In this case, the processing unit IM3 determines whether or not the received data is a mail reception request message (step S3).
103) If the determination result is “YES”, the mail address of the source of the message is specified, an unread e-mail is read from a mailbox corresponding to the mail address, and the read e-mail is compressed with a tag. Part I
M4, and finally transmitted to the mobile packet communication network MPN by the in-pair transmitter IM5 (step S10).
4).

The result of the determination in step S103 is "NO"
In the case of, the processing unit IM3 determines whether the received data is a mail transmission request message (step S3).
105), if the determination result is "YES", it is further determined whether or not the destination mail address of the electronic mail in the message is the electronic mail address of the subscriber of the mobile packet communication network MPN (step S106). The determination in step S106 is performed by supplying a destination mail address to the customer information management unit U-MAX via the bus BUS. That is, when the record including the mail address is returned from the customer information management unit U-MAX, the processing unit IM3 sends the electronic mail addressed to the subscriber of the mobile packet communication network MPN, and the data indicating “not applicable” is transmitted. If it is returned from the customer information management unit U-MAX, it is determined that it is an electronic mail addressed to the user of the Internet INET.

The result of the determination in step S106 is "YE
In the case of S ", the processing unit IM3 performs a mail storage process and an incoming notification process. The mail storage process is a process of storing the electronic mail as an unread mail in a mailbox corresponding to the destination mail address. In addition, the incoming call notification processing means that after the above-mentioned mail storage processing, a call is made with the telephone number of the mobile station MS of the destination specified from the destination mail address of the stored electronic mail, and after the line is established, the mobile station M
This is a process of transmitting a notification message indicating that unread new mail exists to S, and disconnecting the line.

On the other hand, if the decision result in the step S106 is "NO", the processing section IM3 converts the electronic mail included in the mail transmission request message into the mail header adding section IM.
To the Internet I by the external transmission unit IM9.
The data is transmitted to the NET (step S108). If the result of the determination in step S105 is “NO”, that is, if the received data is not a normal HTTP message, not a mail reception request message, and is not a mail transmission request message, the processing unit IM3 do nothing.

FIG. 7 is a flowchart showing the flow of processing (at the time of receiving data from the Internet INET) by the processing unit IM3 of the gateway server GWS. As shown in FIG. 7, the data is received from the Internet INET. Side (ie, external receiving unit I)
If data is received from the M6 or the mail header reduction unit IM7), the processing unit IM3 determines that the received data is
It is determined whether or not the message is a normal message of P (for example, a response to a request using the GET method) (step S201). If the determination result is “YES”, the message is supplied to the tag compression unit IM4. And
It is transmitted to the mobile station MS by the inward transmitter IM5 (step S202).

The result of the determination in step S201 is "NO"
In the case of, the processing unit IM3 determines whether the received data is an electronic mail (step S203). The determination in steps S201 and S203 is performed by examining the contents of the received data (the determination in step S203 may be performed based on the communication protocol used when receiving the data). If the determination result in step S203 is “YES”, the processing unit IM3 further determines whether the destination mail address of the electronic mail in the message is the electronic mail address of the subscriber of the mobile packet communication network MPN (step S204). ). This determination process is realized by the same method as in step S106 described above. Then, the determination result in step S204 is “YE
In the case of S ", the processing unit IM3 performs the above-described mail storage processing and incoming call notification processing (step S205).

On the other hand, if the result of the determination in step S204 is "N
In the case of “O”, the processing unit IM3 does nothing (or returns that the e-mail has not been delivered to the source of the e-mail), and the determination result in step S203 is “NO”. If the received data is HT
If the message is neither a normal message of the TP nor an electronic mail addressed to the subscriber of the mobile packet communication network MPN, the processing unit IM3 does nothing.

A-4: Configuration of Mobile Station MS FIG. 8 is a block diagram showing a configuration of the mobile station MS in the same system, and FIG. 9 is a diagram showing an appearance of the mobile station MS. As shown in these figures, the mobile station MS includes a tag conversion table TBL, an antenna MS1, a data receiving unit M
S2, tag decompression section MS3, data transmission section MS6, display section MS7, operation section MS8, data storage memory MS9, redial memory MS10, telephone directory memory MS11, transmission section MS12, reception section MS13, call control / voice processing system MS
14 and a processing unit MS4 for controlling the above-described units.

In FIG. 8, a data receiving section MS2 extracts digital data from a signal supplied from an antenna MS1, and supplies the data to a tag extension section MS3. In addition, the tag decompression unit MS3 refers to the tag conversion table TBL. If the shortened character string in the tag conversion table TBL exists in the data supplied from the data receiving unit MS2, the shortened character string is converted to the corresponding full character. After the conversion into a column (and after converting "##" to "#"), the data is supplied to the processing unit MS4. The data transmitting section MS6 is provided with a processing section MS4.
Is transmitted to the mobile packet communication network MPN via the antenna MS1.

The display section MS7 displays image data supplied from the processing section MS4, and is realized by an LCD having a display surface DP shown in FIG. Operation unit M
S8 has the operator OP shown in FIG. 9, and supplies data representing the operation content of the operator OP by the user to the processing unit MS4. The "mode" button of the operation element OP is a button for switching between the data communication mode and the voice communication mode. Data storage memory MS9, redial memory MS
10. The telephone directory memory MS11 is read and written by the processing unit MS4, and is realized by an SRAM (static random access memory).

The transmitting section MS12 is a microphone MIC shown in FIG.
And an A / D converter (not shown).
Digital data corresponding to the signal input by C is supplied to the processing unit MS4. The receiving unit MS13 has a D / A converter (not shown), a speaker SP shown in FIG. 9, and the like, and outputs an audio signal corresponding to the digital data supplied from the processing unit MS4. The call control / voice processing system MS14 is provided between the processing unit MS4 and the antenna MS1 for performing call setting processing and call voice transmission processing, and is provided with an instruction from the processing unit MS4 and supplied from the antenna MS1. Processing such as call setting and disconnection according to the command, and a signal corresponding to the audio data supplied from the processing unit MS4.
And processing for supplying audio data corresponding to the signal supplied from the antenna MS1 to the processing unit MS4.

Next, the processing performed by the processing unit MS4 will be described. The processing unit MS4 performs various interrupt processes based on the display state of the display unit MS7 and the input data from the operation unit MS8. Specifically, when the display state and the input data indicate that a resource in the mobile device MS is accessed, the resource is read from the data storage memory MS9, and the display unit MS7 complies with the resource. Display. If the display state and the input data indicate that a resource is accessed by specifying a URL outside the mobile station MS, the processing unit MS4
Creates a normal HTTP message indicating that, and sends it to the gateway server GWS via the data transmission unit MS6 and the antenna MS1. If the display state and the input data indicate that a new mail stored in the gateway server GWS is to be received, the processing unit MS4 creates a mail reception request message, and sends the data transmission unit MS6 and the antenna. The data is sent to the gateway server GWS via the MS 1. Further, if the display state and the input data indicate that an e-mail is to be transmitted, the processing unit MS4 reads the untransmitted e-mail stored in the data storage memory MS9,
A mail transmission request message including the electronic mail is created and transmitted to the gateway server GWS via the data transmission unit MS6 and the antenna MS1.

The processing unit MS4 creates an e-mail, and stores it as an unsent e-mail in the data storage memory MS9.
Provides a user interface for storing in
That is, the user can create an e-mail by operating the processing unit MS4 while visually recognizing the display unit MS7, and store it in the data storage memory MS9 as an unsent e-mail.

Further, the processing unit MS4 includes a data receiving unit M
Interrupt processing is performed based on the input data from S2.
Specifically, when the input data is an e-mail, the e-mail is stored in the data storage memory MS9 as an unread e-mail, and the source mail address of the e-mail stored in the data storage memory MS9 is stored. Are displayed on the display unit MS7 in the order of the reception date (see FIG. 14). The display items and display format of the list are design items as appropriate, but here, the reception date and the sender's email address are displayed in association with each other, and if the sender's email address is too long and a line feed is required Has a format that does not display excess strings.

If the input data from the data receiving unit MS2 is an incoming call notification message, the processing unit MS4
Causes the display unit MS7 to display information indicating that a new mail exists in the gateway server GWS. Further, when the input data is a normal HTTP message, the processing unit MS4 determines whether the user
Provide an interface. A specific user interface will be exemplified in the following description of the operation.

The processing unit MS4 is provided with an extended HTM
It is configured to process L data. That is, the processing unit MS4 has a function of processing HTML data that dynamically associates a menu option with a button of the operation unit MS8, HTML data in which a text or image is associated with a telephone number, and the like. A specific application using this function will be exemplified in the following description of the operation. Note that the processing unit MS4 has a function of scrolling the display content of the display unit MS7 in response to pressing of a specific button of the operation unit MS8, a function of canceling a previous operation when a specific button of the operation unit MS8 is pressed, and the like. , It has the features that common browsers have for browsing home pages.

B: Operation of the Embodiment The data communication service provided in the embodiment is as follows.
It is broadly divided into pull-type services and push-type services. Hereinafter, the operation of the embodiment in each service will be described according to this classification. In this embodiment, the pull service is a WW service on the Internet.
W, the client (mobile device MS) is the server (I
P server W or gateway server GWS), and the server returns a response to the request to the client. In this embodiment, the push-type service means a service in which the server transmits data to the client without receiving a trigger from the client, such as an electronic mail distribution service on the Internet.

Basically, in order to receive the data communication service, the operation mode of the mobile station MS needs to be the data communication mode. However, in the push type service, the mobile station MS operates based on the instruction from the gateway server GWS. Since the MS automatically transitions to the data communication mode, the mobile station MS
Does not need to be changed in advance to the data communication mode. Therefore, in the following description of the push type service, it is assumed that the initial operation mode of the mobile station MS is the voice communication mode. If the operation mode of the mobile station MS is the data communication mode at the time of starting the push-type service, the mode transition is not performed and the push-type service is started as it is. On the other hand, in the description of the pull-type service, it is assumed that the initial operation mode of the mobile station MS is the data communication mode. When a call is set up between the mobile station MS and the gateway server GWS, the mobile station MS
Is supplied to the gateway server GWS.

B-1: Pull Type Service In this embodiment, the IP server W and the gateway server GWS are assumed as the destinations of the request in the pull type service. Since there are many different parts in the processing for these two types of transmission destinations, the following paragraphs will separately explain the terms.

(1) Request destination is IP server W
In this case, when receiving the pull-type service, the user of the mobile device MS first operates the “mode” button of the mobile device MS in order to set the mode of the mobile device MS to the data communication mode. When receiving the data corresponding to this operation, the processing unit MS4 performs the following processing in parallel.

Processing 1 The processing unit MS4 reads the HTML data stored in the ROM (Read Only Memory) inside the mobile station MS, interprets the tags in the data, generates a display image, and generates the display image. It is displayed on the display section MS7. FIG. 10 is a diagram showing a display example of the display unit MS7, and shows a main menu in which a service that can be provided in the pull-type service is selected. Each option of the main menu is an anchor of a link to another resource, and the URL of the corresponding resource is embedded by a predetermined tag. Further, the processing unit MS4 interprets the button assignment tag associated with each option,
Prepare for input from operation unit MS8. That is, the processing unit M
In step S4, each option of the main menu is associated with each button of the operation element OP on a one-to-one basis.

Processing 2 The processing unit MS4 comprises the mobile station MS and the gateway server GW.
In order to set up a call with S, a call setting request is transmitted via the call control / voice processing system MS14 and the antenna MS1. The mobile station MS stores a telephone number corresponding to the gateway server GWS in a ROM (not shown) or the like in advance, and the call setting request is performed using the telephone number.
Subsequent call setting processing is the call setting processing of a general mobile communication network itself, and is well known, so that the description thereof will be omitted.
Note that the subsequent processes can be started in parallel before the completion of the call setting process, but here, it is assumed to be started after the completion of the call setting process.

The user who has referred to the display surface DP presses a button in the operator OP corresponding to the option to be selected.
For example, when selecting an option starting with “1”, the user presses the “1” button on the display surface DP. Then, data corresponding to the pressed button is stored in the operation unit MS8.
Is supplied to the processing unit MS4. The processing unit MS4 temporarily selects an option associated with the value of the button specified from the data supplied from the operation unit MS8 in the data being displayed, and the option is highlighted (highlighted). The display image is changed so that an action that can be selected by the user is displayed in a predetermined area in the lower row, and the display image is displayed on the display unit MS7.

FIG. 11 shows a display image when the "1" button is pressed in FIG. In this figure, "enter" means jumping to a resource (for example, a homepage) linked to the selected option. Note that if there is only one action or option that can be selected by the user, the processing unit MS4 provisionally selects the action or option from the beginning and displays a display image so that the action or option is highlighted. In the example of FIG. 11, since only the URL is associated with the provisionally selected option, the action that can be selected by the user is only a jump to the home page linked to the option, so that “enter” is provisionally selected. , Is highlighted.

In this embodiment, not only the URL but also the telephone number can be associated with the menu options by using the write tag. For example, in FIG. 10, it is assumed that a URL and a telephone number are associated with an option marked with “2”. here,
When the option with “2” is temporarily selected, as shown in FIG. 12, “memory”, “call”
"Enter" is displayed. At this time, "memory" at the left end in the figure is temporarily selected. Here, when the “Enter” button is pressed, the character string of the option with “2” and the telephone number associated with the option are stored in the telephone directory memory MS11 as telephone directory data. In addition, it is also possible to store only the telephone number in the redial memory MS10 by setting in advance. When "call" is temporarily selected and the "decision" button is pressed, the mobile station MS automatically changes the operation mode to the voice call mode and automatically calls the telephone number. At this time, the called telephone number is stored in the redial memory MS.
Whether or not to store it in 10 can be selected by prior setting.

In the situation shown in FIG. 11, when the user presses the "OK" button on the display screen DP, the choices of the options and actions are determined. Specifically, when data corresponding to the “Enter” button is supplied from the operation unit MS8, the processing unit MS8
4 makes a permanent selection of the provisionally selected options and actions,
A request for acquiring a resource specified by a URL associated with the option as a link destination is transmitted via the data transmission unit MS6 and the antenna MS1. The upper layer communication protocol used at the time of this transmission is the compatible protocol AL, and the lower layer communication protocol is the simple protocol TL. The request is HTTP G
This is a message using the ET method.

The above request is sent to the radio section and the base station BS.
Via the inbound receiver IM1 of the gateway server GWS
Is received by The request received by the internal receiving unit IM1 is supplied to the processing unit IM3, where it is interpreted. In this case, since the request is a normal HTTP message, the request is passed through the processing unit IM3 and the external transmission unit I
It is sent from M9 to the Internet INET. However, the lower layer communication protocol used at the time of this transmission is T
It has been converted to CP / IP. The request sent to another network is finally received by the IP server W having the resource specified by the URL.
In the IP server W, a message including the resource specified by the URL included in the request is sent to the Internet INET as a response to the request.

The response is sent to the gateway server G
WS is received by the external receiving unit IM6, and the processing unit IM3
Supplied directly to The gateway server GWS determines that the response is a normal HTTP message and supplies the response to the tag compression unit IM4 without any change. The response is supplied to the inward transmitting unit IM5 after the internal full character string is converted into the shortened character string in the tag compression unit IM4, and is transmitted to the mobile packet communication network MP
N to the mobile station MS. The lower layer communication protocol used at the time of the transmission is the simple protocol T.
L.

The above response is received by the data receiving section MS2 via the antenna MS1 of the mobile station MS, and is supplied to the tag extension section MS3. In the tag extension section MS3,
The shortened character string in the response is converted to a full character string.
Therefore, the data supplied from the tag decompression unit MS3 to the processing unit MS4 is the same as the data output from the processing unit MS4. The processing unit MS4 stores the data supplied from the tag decompression unit MS3 in the data storage memory MS9, interprets tags in the data, generates a user interface including a display image, and displays the display image on the display unit. It is displayed by the MS 7 (see FIG. 13).

(2) When the request destination is the gateway server GWS As described above, the gateway server GWS
It has a mailbox for S. Therefore,
In order for the mobile station MS to download an electronic mail addressed to itself, the mobile station MS requests a pull-type service from the gateway server GWS. In this case, while the main menu is displayed on the display unit MS7 (see FIG. 10), the user operates the operation unit MS8 to select the option “mail reception” with “4”. Thereby, the e-mail receiving process is started.

Specifically, the tag decompression unit MS3 sends a mail reception request message requesting the gateway server GWS to transmit an unread e-mail to the data transmission unit MS.
6. Mobile packet communication network MPN via antenna MS1
Send to The message sent to the mobile packet communication network MPN is sent to the inbound receiver IM of the gateway server GWS.
1 is received. The data received by the inward receiving unit IM1 is supplied to the processing unit IM3, where the content is interpreted. The processing unit IM3 determines that the supplied message is a mail reception request message based on the interpretation result, and reads the unread electronic mail from the mailbox corresponding to the electronic mail address specified by the telephone number of the source of the message. The e-mail is read, the unread e-mail is transmitted to the mobile station MS via the tag compression unit IM4 and the inward transmission unit IM5, and the e-mail in the mailbox is read. The full character string in the data is converted into a shortened character string in the tag compression unit IM4.

In the mobile station MS, the received data is supplied to the processing section MS4 via the antenna MS1, the data receiving section MS2, and the tag extending section MS3. Note that the shortened character string in the data is converted to a full character string in the tag decompression unit MS3. The processing unit MS4 interprets the data supplied from the tag decompression unit MS3 as an e-mail, stores the data in the data storage memory MS9 in association with the reception time, and sends the e-mail address of the e-mail stored in the data storage memory MS9. Are displayed in a list on the display section MS7 (see FIG. 14).
In FIG. 14, the numbers "12" and "11" at the right end indicate the reception date. In FIG. 14,
Unread emails are underlined. Further, in the state of FIG. 14, a part that cannot be completely displayed when the user presses a specific button is displayed.

The user refers to the display contents on the display surface DP and selects a desired e-mail. Thereby, the processing unit MS4 reads out the electronic mail of the selected title from the data storage memory MS9 and causes the display unit MS7 to display the electronic mail (see FIG. 15). At this time, if the e-mail whose content is displayed is an unread e-mail, the processing unit MS4 changes the status information stored in the data storage memory MS9 to information indicating "read". Here, an example in which an e-mail composed of only text is displayed has been described.
The operation for displaying an electronic mail including L data and image data is the same as described above.

B-2: Push Type Service Next, a push type service will be described. B-2-1: Transmission of E-mail from Mobile Station MS Here, prior to transmission of the e-mail, the user of the mobile station MS operates the operation unit MS8 to create an e-mail,
It is assumed that the storage in the predetermined area of the data storage memory MS9 has been completed. Note that the e-mail header created here has only three items as described above.

An unsent electronic mail is stored in the data storage memory M.
The user stored in the predetermined area in S9 presses the “mode” button of the mobile device MS in order to set the mode of the mobile device MS to the data communication mode. When receiving the data corresponding to this operation, the processing unit MS4 performs the above-described processing in parallel. Note that the subsequent processing can be started in parallel before the completion of the call setting processing, but here, it is assumed to be started after the completion of the call setting processing.

The user who has referred to the display surface DP selects the option “mail transmission” with “4” at the top. Thus, the e-mail transmission process is started. Specifically, the processing unit MS4 reads an untransmitted e-mail (text data) from the data storage memory MS9 and sends a mail transmission request message including the e-mail via the data transmission unit MS6 and the antenna MS1 to the mobile packet communication network. M
Send to PN. The upper layer communication protocol used at the time of this transmission is the compatible protocol AL, and the lower layer communication protocol is the simple protocol TL.

The mail transmission request message sent to the mobile packet communication network MPN is received by the pair receiving unit IM1 of the gateway server GWS. Inward receiver IM1
Is supplied to the processing unit IM3, where the content is interpreted. The processing unit IM3 extracts an e-mail from the mail transmission request message based on the interpretation result, and transmits this to the destination mail address.

(1) When the destination mail address is the e-mail address of a subscriber in the mobile packet communication network MPN (when the result of the determination is "YES"). In this case, the processing unit IM3 stores the electronic mail as an unread mail in a mailbox corresponding to the destination mail address, and the mobile station MS to which the destination mail address is assigned.
Performs the above-described incoming call notification processing. Here,
Since the initial state of the mobile station MS is in the voice communication mode, call setting processing and call disconnection processing are required before and after the incoming call notification processing.

The incoming notification message is received by the data receiving section MS2 via the antenna MS1 of the mobile station MS,
The data is supplied to the processing unit MS4 via the tag extension unit MS3.
Since the incoming notification message does not include the shortened character string, the character string is not converted in the tag decompression unit MS3.
That is, the incoming call notification message is directly sent to the processing unit MS4.
Supplied to Upon receiving the incoming call notification message, the processing unit MS4 causes the display unit MS7 to display on the display surface DP that a new mail exists in the gateway server GWS.

(2) Destination mail address is IP server W
E-mail address (if the above judgment result is "NO")
in the case of). In this case, the processing unit IM3 of the gateway server GWS
Supplies the electronic mail to the mail header adding unit IM8. In the mail header adding unit IM8, the format of the electronic mail is converted into a format that can be transmitted by SMTP. That is, the missing header item is added to the email. Then, the mail header adding unit IM8 supplies the converted electronic mail to the external transmitting unit IM9. The external transmitting unit IM9 converts the electronic mail supplied from the mail header adding unit IM8 to the Internet INET using SMTP.
Send to The e-mail sent to the Internet INET is received by the IP server W having a mailbox provided corresponding to the destination mail address of the e-mail. The IP server W stores the electronic mail in a mailbox.

B-2-2: Transmission of E-mail from IP Server W On the other hand, an e-mail from IP server W to mobile station MS is S
When transmitted to the Internet INET using MTP, the transmitted data is received by the external receiving unit IM6 of the gateway server GWS. Since the received data has been transmitted using SMTP, the external receiving unit IM6 determines that the data is an electronic mail, and supplies the electronic mail to the mail header reducing unit IM7. The mail header reduction unit IM7 deletes items other than the above-mentioned essential items from the header of the electronic mail, and supplies the resulting data to the processing unit IM3. Processing unit IM3
Recognizes the data supplied from the mail header reduction unit IM7 as an electronic mail, extracts a destination mail address from the header, and stores it as an unread mail in a mailbox provided corresponding to the mail address. Since then
The incoming call notification processing for the mobile station MS is performed. However, since the processing is the same as the above-described processing, description thereof will be omitted.

C: Supplement As described above, the present invention is not limited to the above embodiment. Within the scope of the technical idea of the present invention, for example, the following various changes can be made. (1) In the above embodiment, the tag compression / decompression processing
Although the deletion / addition processing of the header item and the processing of the write tag are all performed, any one processing or a combination of any two processings may be performed. (2) In the above-described embodiment, a button is assigned to a menu option, and the option can be directly selected in response to the button being pressed. However, a cursor key is provided, and the option is selected by operating the cursor key. You may do so.

(3) In the above embodiment, the data to be written according to the write tag is the telephone number, but the present invention is not limited to this. Alternatively, a plurality of types of write tags may be prepared, and the write destination and the type of data to be written may be changed according to the type of the write tag.
Of course, the user may arbitrarily specify not only the write destination but also the type of data to be written. In addition, although the operation example in which the telephone number and the character string associated with the telephone number are written as a set in the telephone directory memory is described, the information associated with the telephone number is not limited to the character string. For example, if the specifications of the communication terminal device permit, an object such as an image can be written in a telephone directory memory in association with a telephone number.

(4) In the above-described embodiment, the data to be written is notified to the communication terminal device using the tag (write tag) of the markup language, but other methods can be adopted. For example, in the communication terminal device, if there is any data in a predetermined field of data from the gateway device, it is determined that the data is data to be written, and if there is no data in the predetermined field, there is no data to be written. May be determined. Needless to say, when no tag is used, there is no need to employ a markup language.

(5) In the above embodiment, data to be written is written in the nonvolatile memory. However, the present invention is not limited to this. For example, data to be written may be written in a volatile memory such as a RAM. . Needless to say, a hard disk, a magneto-optical disk, and the like are also a kind of nonvolatile memory. (6) In the above-described embodiment, the tag to be compressed does not exist in the transmission data from the mobile device MS to the gateway server GWS, or the number is small, so that the tag is not compressed in the mobile device MS. Was shown,
Needless to say, this is not a limitation.

(7) In the above-described embodiment, an example in which a mobile network is used as a communication line between a communication terminal device and a gateway device has been described. However, a mode in which other networks or dedicated lines are used is also considered. Can be (8) In the above-described embodiment, a header item is always added in the gateway device at the time of sending an e-mail.
If the TP allows a header having only three items of the destination address, the source address, and the title, the additional processing may be omitted. (10) Note that the “character string” in the above-described embodiment is not only a visible character string but also an invisible character string (for example,
Escape sequence).

[0080]

As described above, according to the present invention,
The transmission and reception of e-mail between the communication terminal device and the gateway device does not follow the simple mail transfer protocol but the hypertext transfer protocol, so that traffic between the communication terminal device and the gateway device can be reduced. . In addition, by compressing the tags in the markup language and reducing the items in the mail header,
Further traffic reduction is achieved.

[Brief description of the drawings]

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

FIG. 2 shows a subscriber database UD in the system.
FIG. 9 is a data format diagram illustrating the contents of B.

FIG. 3 is a conceptual diagram partially showing a communication protocol hierarchy in the system.

FIG. 4 shows a gateway server GW in the system.
FIG. 3 is a block diagram illustrating a configuration of S.

FIG. 5 is a block diagram showing a configuration of a system control unit I-MAX in the gateway server GWS.

FIG. 6 is a flowchart showing a flow of processing (at the time of receiving data from the mobile packet communication network MPN) by the processing unit IM3 of the gateway server GWS.

FIG. 7 is a flowchart showing the flow of processing (at the time of receiving data from the Internet INET) by the processing unit IM3 of the gateway server GWS.

FIG. 8 is a block diagram showing a configuration of a mobile station MS in the system.

FIG. 9 is a diagram showing an appearance of the mobile device MS.

FIG. 10 is a diagram showing a display example of a display section MS7.

FIG. 11 is a diagram showing a display example of a display section MS7.

FIG. 12 is a diagram illustrating a display example of a display unit MS7.

FIG. 13 is a diagram showing a display example of a display unit MS7.

FIG. 14 is a diagram showing a display example of a display unit MS7.

FIG. 15 is a diagram showing a display example of a display section MS7.

[Explanation of symbols]

AL: compatible protocol, BS: base station, BUS: bus,
DP: display surface, GWS: gateway server, I-MA
X: system control unit, IM1: inward reception unit, IM2: tag decompression unit, IM3: processing unit, IM4: tag compression unit, IM
5: internal transmission unit, IM6: external reception unit, IM7: mail header reduction unit, IM8: mail header addition unit, IM9 ...
External transmission unit, IM10 ... Bus interface unit, IN
ET: Internet, LST: Header reduction / additional list, M-MAX: Email management unit, MIC: Microphone,
MS: mobile unit, MS1: antenna, MS2: data reception unit, MS3: tag extension unit, MS4: processing unit, MS6: data transmission unit, MS7: display unit, MS8: operation unit, MS9
... Data storage memory, MS10 ... Redial memory, M
S11: telephone directory memory, MS12: transmitting unit, MS13 ...
Receiving unit, MS14: Call control / voice processing system, MPN: Mobile packet communication network, OP: Operator, PS: Packet subscriber processing device, SP: Speaker, TBL: Tag conversion table, TL: Simple protocol, U-MAX ... Customer information management unit, UDB ... Subscriber database, W ... IP server

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04L 12/66 H04L 11/00 310B 5K067 29/06 11 / 20B 5K101 H04M 3/00 13/00 305B 11 / 00 302 (72) Inventor Toshiyasu Yabe 2-10-1 Toranomon, Minato-ku, Tokyo F-term in NTT Mobile Communication Network Co., Ltd. (reference) 5B089 GA31 HA11 HB05 HB07 JA31 JB02 KA05 KA08 KC11 KC51 KF05 KH04 KH21 KH28 LA01 LA06 LA12 LA15 LB14 5K030 GA02 GA20 HA06 HD03 JT09 KA07 LA08 5K033 AA02 AA04 CB08 DA05 DA19 DB18 5K034 AA03 AA14 BB05 EE03 HH01 HH02 HH61 5K051 AA03 BB02 JJ01 BB02 CC02 CC07 DD01 EE16 FF02 FF23 GG11 HH05 HH22 5K101 KK02 LL02 LL12 MM07 NN18 RR11 TT01

Claims (12)

[Claims] 1. A communication terminal device connected to a wireless network for transferring data by a hyper text transfer protocol, comprising: a computer network for transferring an electronic mail by a simple mail transfer protocol; An e-mail receiving method for receiving an e-mail from the computer network via a gateway device connected to the computer device, wherein the gateway device has been transmitted from the computer network side by a simple mail transfer protocol. A downlink receiving step of receiving an e-mail; and the gateway device converts the data received in the downlink receiving step into a hypertext transfer
A downlink transmission step of transmitting to the wireless network by a protocol, a terminal receiving step of receiving the data transmitted from the wireless network by the hyper text transfer protocol, and a communication terminal apparatus; A display step of displaying the data received by the receiving means. 2. A computer network connected to a wireless network for transferring an electronic mail by a hypertext transfer protocol, comprising: a computer network for transferring the electronic mail by a simple mail transfer protocol; Via the gateway device connected to the computer network, the communication terminal device, the communication terminal device, the destination address item, the source address item, and the title item A creating step of creating data having; a terminal transmitting step in which the communication terminal device sends out the data created in the creating step to the wireless network by a hypertext transfer protocol; and Net An upstream receiving step of receiving data transmitted from the work side; and an upstream transmission in which the gateway device transmits the data received in the upstream receiving step to the computer network as e-mail by a simple mail transfer protocol. An e-mail transmission method comprising the steps of: 3. A gateway device for realizing the e-mail receiving method according to claim 1, wherein the e-mail is transmitted from the computer network by a simple mail transfer protocol. Means, a downlink data format conversion means for converting the data received by the downlink reception means into data in a format using a markup language, and converting the data converted by the downlink data format conversion means into a hypertext transfer format. A gateway transmitting means for transmitting to the wireless network by a protocol. 4. A tag compression means for converting a tag of the markup language in data whose format has been converted by the data format conversion means into a shorter and uniquely identifiable shortened character string; 4. The gateway device according to claim 3, wherein the means sends the data whose tag has been converted by the tag compression means to the wireless network using a hyper text transfer protocol. 5. The apparatus according to claim 1, further comprising: a header item deleting unit configured to delete a preset header item from the data received by the downlink receiving unit, wherein the downlink data format converting unit is configured to be configured in advance by the header item deleting unit. 4. The gateway device according to claim 3, wherein the data with the header item deleted is converted into data in a format using a markup language. 6. A gateway device for realizing the electronic mail transmitting method according to claim 2, wherein the upstream receiving means receives data transmitted from the wireless network side by a hyper text transfer protocol. The data received by the upstream receiving means
An upstream data format conversion unit for converting and outputting an electronic mail in a format that can be transferred by a mail transfer protocol; and the computer network using a simple mail transfer protocol for converting the electronic mail output from the upstream data format conversion unit. A gateway device comprising: an upstream transmitting unit for transmitting to a gateway. 7. A tag decompression means for converting a shortened character string in data received by the upstream reception means into a tag of a markup language, and a data decompressed by the tag decompression means in an e-mail format. Upstream data format conversion means for converting data into data, wherein the upstream transmission means sends the data converted in format by the data format conversion means to the computer network as an e-mail by the simple mail transfer protocol. The gateway device according to claim 6, wherein 8. A header item adding means for adding a preset header item to data whose format has been converted by the upstream data format converting means, wherein the upstream transmitting means includes 7. The gateway device according to claim 6, wherein the data to which the header item is added is sent as an electronic mail to the computer network by the simple mail transfer protocol. 9. A communication terminal device for realizing the electronic mail receiving method according to claim 1, wherein receiving means for receiving data transmitted from the wireless network side by a hyper text transfer protocol. And a display means for displaying data received by the receiving means. 10. A tag decompression unit for outputting a data obtained by converting a specific data string in data received by the reception unit into a tag of a corresponding markup language, wherein the display unit includes: The communication terminal device according to claim 9, wherein the data output from the tag decompression means is displayed in the form of an electronic mail in the wireless network. 11. A communication terminal device for realizing the electronic mail transmission method according to claim 2, wherein the communication terminal device generates data having a destination address item, a source address item, and a title item. A communication terminal device comprising: a creating unit; and a transmitting unit that sends out the data created by the creating unit to the wireless network according to a hyper text transfer protocol. 12. A tag compression unit for outputting data obtained by converting a specific tag in the data generated by the generation unit into a corresponding specific data string, wherein the transmission unit includes the tag compression unit. The communication terminal device according to claim 11, wherein the data output from the means is transmitted to the wireless network according to a hyper text transfer protocol.