KR100941551B1 - Method for direct exchanging information among voip wireless phone by using wireless lan - Google Patents

Abstract

The present invention relates to a method of directly exchanging information of a VIP wireless telephone period using a wireless LAN. The present invention relates to a method of exchanging information between WIP phones connected to a LAN using a same protocol and assigned a unique IP address.

According to the above method, a method of exchanging information between VOIP wireless telephones (WIP phones) using the same protocol and assigned a unique IP address by connecting to a LAN. Pressing, the originating WIP phone requesting a direct connection to the receiving WIP phone; Transmitting the received WIP phone to the calling WIP phone by putting its own IP address on the response signal while allowing the receiving WIP phone to directly connect to the request of the calling WIP phone; The originating WIP phone confirming the unique IP address of the receiving WIP phone, inquiring of the type and data location of the receiving WIP phone to the receiving WIP phone; Transmitting an OK signal to the originating WIP phone in response to the inquiry of the originating WIP phone, indicating that the receiving WIP phone can send the corresponding information; After the OK signal is returned, the calling WIP phone switches to the data receiving mode, and the receiving WIP phone directly transmits data to the calling WIP phone in the data receiving mode; And when the receiving WIP phone notifies the calling WIP phone that the transmission is completed, when the transmission of data is completed, sending a confirmation signal indicating that the calling WIP phone is completed to the receiving WIP phone and ending data communication. .

According to the present invention, it is possible to exchange information directly between subscribers without adding a separate module for VOIP wireless telephone data communication using a wireless LAN, and also enable data communication between WIP phones without passing through a main switching device. It is efficient and reduces the load on the system.

Description

Method of exchanging information directly on VIO IP phone using wireless LAN {METHOD FOR DIRECT EXCHANGING INFORMATION AMONG VOIP WIRELESS PHONE BY USING WIRELESS LAN}

1 is a block diagram showing a connection configuration of a VOIP wireless telephone using a general wireless LAN,

2 is a block diagram schematically showing a data communication process according to the present invention;

3 is an exemplary view showing the size of data transmitted during data communication according to the present invention;

4 is a flowchart illustrating a signal processing procedure of data communication according to the present invention;

♧ description of the symbols for the main parts of the drawing ♧

10a, 10b, 10c, AP ... Access point 12. Communication cable

14a, 14b, 14c, P1, P2 .... WIP Phones 16a, 16b, 16c .... Cell Coverage

20..Protocol Conversion Unit 30..Main Switching Unit

C ... Client H. Host

The present invention relates to a method of exchanging information between VOIP wireless telephones, and more particularly, to directly exchange information between terminals without managing a system for exchanging various data between terminals applied to VOIP wireless telephones using all wireless LANs. The present invention relates to a method of directly exchanging information on a VIO IP phone using wireless LAN.

In general, a LAN is a collection of PCs, mainframes, and workstations connected by a communication line of 300 m or less, and is a distance within which a current or a radio signal can be accurately transmitted between computers, that is, a computer installed in a building of an institution. It refers to a high-speed network connected so that employees can use the equipment most effectively.

Wireless LAN is a system that makes it easy to build a network by allocating a high-bandwidth frequency to a wirelessly connected LAN. With such a wireless LAN, a mobile phone user can access a local area network through a wireless connection. Will be.

Under this concept, a VOIP wireless telephone (hereinafter referred to as a 'WIP phone') using a wireless LAN has been disclosed, and FIG. 1 shows an example thereof.

As shown in FIG. 1, a plurality of access points 10a, 10b, and 10c are tied to an Ethernet by the communication cable 12, and a protocol conversion device 20 and a main device for handover and protocol adjustment thereof are performed. The exchange device 30 is connected.

Each of the access points 10a, 10b, and 10c is provided with a plurality of WIP phones 14a, 14b, and 14c in which a wireless module having a SIP protocol is embedded, and these WIP phones 14a, 14b, and 14c are illustrated. Wireless communication is possible only to the corresponding access points 10a, 10b, and 10c within the cell coverages 16a, 16b, and 16c represented by the dotted lines.

In other words, the access points 10a, 10b, and 10c are devices used to connect a wired LAN to a wireless LAN, provide data transmission and buffering functions, and support dozens to hundreds of users and propagate up to approximately 100m (cell coverage). Is transmitted to allow a user having the WIP phones 14a, 14b, 14c to use the telephone, exchange data, and the like within the range.

If you want to communicate such as voice and data exchange from cell coverage (hereinafter referred to as 'group') to another group centered on one access point (for example, handover), the WIP phone in one group The wireless signal using the SIP protocol sent from the received by the access point, through which the wireless signal is converted to the H.323 protocol via the protocol conversion device 20 via a wire, for example, such as LDK300 It is transmitted to the main exchange device (30).

The main switch 30 analyzes the signal and finds the WIP phone to be received, connects the calls to each other, and simultaneously transmits the call to the calling WIP phone, thereby enabling various data exchanges including a voice call.

However, the above-mentioned system does not need to go through the main switching device 30 because all communication processes must be performed through the main switching device 30. For example, between subscribers in the same cell coverage or subscribers joined to different groups. In exchange of business cards, ringtones, phonebooks, photo information, etc., it is inevitable to use the service up to the main switching device 30, so that the disadvantages such as the increase of the cost and the weighting of the signal processing remain. .

In addition, in order to be able to perform the above-described service without going through the main switching device 30, a separate wireless module (for example, an RF module) or an infrared wireless device required for data communication should be added. Other problems, such as augmentation and difficulties in administrative control, are derived.

The present invention was created in view of the above-described problems of the prior art, and when it is necessary to exchange data instead of voice communication, the communication is performed by pressing a separate data communication key provided in the WIP phone. Recognizing that it is related to transmission and allowing the communication between WIP phones directly through the access point without passing through the system through the newly allocated IP address, it is possible to reduce the load on the system and to facilitate data communication without increasing the cost. An object of the present invention is to provide a method for directly exchanging information on a VIO IP phone using a wireless LAN.

The present invention provides a method for exchanging information between a VOIP wireless telephone (WIP phone) using the same protocol and connected to a LAN and assigned a unique IP address in order to achieve the above technical problem. Pressing a number of a receiving WIP phone, requesting a direct connection from the calling WIP phone to the receiving WIP phone; Transmitting the received WIP phone to the calling WIP phone by putting its own IP address on the response signal while allowing the receiving WIP phone to directly connect to the request of the calling WIP phone; The originating WIP phone confirming the unique IP address of the receiving WIP phone, inquiring of the type and data location of the receiving WIP phone to the receiving WIP phone; Transmitting an OK signal to the originating WIP phone in response to the inquiry of the originating WIP phone, indicating that the receiving WIP phone can send the corresponding information; After the OK signal is returned, the calling WIP phone switches to the data receiving mode, and the receiving WIP phone directly transmits data to the calling WIP phone in the data receiving mode; And when the receiving WIP phone notifies the calling WIP phone that the transmission is completed, when the transmission of data is completed, sending a confirmation signal indicating that the calling WIP phone is completed to the receiving WIP phone and ending data communication. .

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is a block diagram schematically showing a data communication process according to the present invention, FIG. 3 is an exemplary view showing the size of data transmitted during data communication according to the present invention, and FIG. 4 is a data communication according to the present invention. This is a flow chart showing the signal processing procedure of.

As shown in Figure 2, according to the present invention for the direct data exchange between the WIP phones (P1, P2) registration process for connecting a direct call should be performed.

The registration process is applicable to both CDMA terminals and GSM terminals, and the IP information set in all WIP phones (WIP1, WIP2) except for a special case where there is a DHCP server, for example, 150.150 in the case of any one WIP phone (P1). 59.1; 150.150.59.2 for another WIP phone (P2); In the case of an access point (AP), an IP address for each of them should be allocated on the network through IP information such as 150.150.59.3.                     

At this time, GATEWAY ADDRESS, SUBNET MASK, and DNS SERVER IP ADDRESS should be assigned together.

In this way, when unique IP address is allocated, direct communication between each IP address is possible.

However, for mutual communication, the protocols must be matched, but all the WIP phones (P1, P2) use the same SIP protocol, so that they are in a state of communication. It will play a role.

In addition, in order for the system to recognize that the corresponding signal is a setup message for data communication, each WIP phone (P1, P2) is provided with a button for data communication in addition to a call button for voice communication, and the signal processing by the operation of the button. It is desirable to set the system and the WIP phone so that the system is not involved.

When the button of the outgoing WIP phone (P1) for data communication is operated, the system recognizes that the signal is a signal for data communication, not a signal for voice communication, and the intervention of the system is stopped, and then the outgoing WIP phone (P1) Recipient's telephone number pressed at is immediately switched to IP ADDRESS and connected directly to the receiving WIP phone (P2).

At this time, if the WIP phone is in the same group, the signal sent from the originating WIP phone (P1) is directly connected to the receiving WIP phone (P2) in the same cell coverage directly through the access point (AP). The signal originating from the WIP phone (P1) is connected to the access point with the other cell coverage where the receiving WIP phone is located via the wired LAN via the access point (AP) and communicates directly with the receiving WIP phone by communicating with the access point. Will be connected.

In this way, when the connection for data communication is established, data communication such as business card information, ringtone, address book, photo information, and the like becomes possible. .

For example, if data is managed as shown in the data structure of FIG. 3, specific data can be easily transmitted and received. If the data is "phone number 2" of the ADDRESS SECTOR, the data can be easily found at any time. In addition, if a well-known search function for searching for data is added in a state where the connection between the WIP phones for data communication is completed, more convenient user convenience may be provided.

That is, after the terminal and the terminal have completed IP ADDRESS between each other, they are ready to transmit and receive data. Therefore, the connection between the corresponding WIP phones can be made directly through the access point. When the connection is completed, only the protocol for data communication is completed. If the WIP phone is configured independently of each other, it is possible to transmit and receive data. In the present invention, all the WIP phones use the SIP protocol and are configured to enable direct data connection (DIRECT DATA CONNECTION), thereby enabling easy data transmission and reception. do.

Next, a signal processing procedure of data communication for direct connection between WIP phones will be described with reference to FIG. 4.

As shown in Figure 4, the WIP phone requesting a data communication connection, that is, the setup message (SETUP MESSAGE) of the originating WIP phone (hereinafter referred to as 'host') (H) is directly connected to distinguish from the setup message for voice communication The setting message should be sent, which is performed by pressing a button for data communication separately provided in the call button.

That is, the host H transmits a direct connection setup signal to a WIP phone that accepts a data communication connection, that is, a receiving WIP phone (hereinafter referred to as a 'client') C. C) returns a setting OK message for the direct connection back to the host H (S11, S12).

Subsequently, the host H requests the IP ADDRESS of the client C necessary for the data communication connection to the client C. The client C sends the IP ADDRESS to the IP ADDRESS response signal. (S13, S14).

As such, when the host H receives the response signal for the IP address of the client C, the host H overwrites the received IP address with the value of the protocol conversion device necessary for connection for normal voice communication. Since the original IP address of the protocol conversion device required for the voice communication connection is stored separately for later, the IP address of the client C for direct connection, that is, the destination IP address, is known, so that the setting for the data communication connection is OK. S15, S16).

Thereafter, the host H inquires the client C of the kind of data he wants to receive (eg, business card information, ring tone, etc.), and the client C sends the information about the client C to the inquiry. If the answer is OK, the data is transmitted by data communication (S17, S18).

At this time, the location of the data should always be arranged in groups, and if the location of the data required (the host H will be known at the time of OK response of the client C), the host H is in a mode for receiving data. When the setting of the reception mode is completed, the client C transmits the data requested by the host H.

That is, the client C side always knows where the information to be sent by the client C is located in its memory when the direct connection request is made, and what kind of data (business card information, ring tone, etc.) the host H requests. After this, the requested host H is switched to the reception mode for receiving data.

When the transmission is completed, it sends a message indicating that the transmission of the data is complete, and in response to the reply that the reception is complete, it is confirmed that the data has been properly transmitted and received (S19, S20).

In this case, the location of data should be assigned to a specific address in common to all terminals as data for business card information, a ringtone, etc., and the structure may be an exemplary structure as shown in FIG.

This enables direct connection between WIP phones and data communication through the system without going through the system.

As described in detail above, the present invention provides the following effects.

First, it is possible to exchange information directly between subscribers without adding a separate module for VOIP wireless telephone data communication using wireless LAN.

Second, data communication between WIP phones is possible without going through the main exchange device, which is efficient and reduces the load on the system.

Claims (4)

It is a method of exchanging information between VOIP wireless telephones (hereinafter referred to as 'WIP phones') using the same protocol and assigned a unique IP address by connecting to a LAN. a) when the user presses the number of the receiving WIP phone to be connected, the originating WIP phone requests a direct connection to the receiving WIP phone; b) sending the original WIP phone to the originating WIP phone by putting its own IP ADDRESS in a response signal while allowing the direct connection of the incoming WIP phone to the request of the originating WIP phone; c) the originating WIP phone confirming the unique IP address of the receiving WIP phone to inquire the receiving WIP phone of the type and data location of the data; d) transmitting an OK signal to the originating WIP phone in response to the inquiry of the originating WIP phone, that the receiving WIP phone can send the corresponding information; e) after the OK signal is returned, the calling WIP phone switches to the data receiving mode, and the receiving WIP phone directly transmits data to the calling WIP phone in the data receiving mode; And f) when the receiving WIP phone notifies the calling WIP phone that the sending WIP phone is completed when the data is transmitted, ending the data communication by sending a confirmation signal to the receiving WIP phone that the receiving WIP phone is completed. VIO IP wireless telephone period direct information exchange method using a wireless LAN. The method of claim 1, Step a) is Pressing a data communication button is performed after the process of informing the main switching device that the current communication is a direct connection communication for data exchange between WIP phones without passing through the main switching device. Direct information exchange method for wireless telephone period. The method of claim 1, In step b), The method of claim 1, wherein the originating WIP phone overwrites the IP address with the IP address of the protocol conversion device and separately stores the IP address for voice communication. The method of claim 1, The data that is directly connected and exchanged between the calling WIP phone and the receiving WIP phone includes a VIO using character information except for ringtone, address book, phone book, business card information, picture information and other voice information. Direct information exchange method for IP wireless telephone period.

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