KR20130105032A - Wireless communication terminal and method therefor - Google Patents

Abstract

PURPOSE: A wireless communication terminal and a network access method thereof are provided to enable a customer to access a network selectively according to the requirement of the customer or the characteristics of the data service to execute through a corresponding wireless communication terminal. CONSTITUTION: A setting value storing part (104) designates and stores access network setting value according to the characteristics of each data service. A service selection part (106) selects data service to execute. When the data service is selected by the service selection part, an access network judgment part (108) judges access network setting value corresponding to the selected data service. A network connection part (110) selects an internet protocol (IP) address from an IP storing part in correspondence to the access network setting value judged by the access network judgment part. The network connection part performs wireless communication by transferring the selected IP address to a corresponding network. [Reference numerals] (102) IP storage part; (104) Setting value storing part; (106) Service selection part; (108) Access network judgement part; (110) Network connection part; (112) Setting value input part; (114) Network check part; (116) Network comparison part; (118) Network switch judgement part; (120) IP address assignment part; (122) IP renewal part

Description

Wireless communication terminal and its network connection method {Wireless Communication Terminal and Method therefor}

The present invention relates to a wireless communication terminal and a method for accessing a network thereof, and more particularly, to a wireless communication terminal capable of connecting to a plurality of networks, the characteristics of a data service to be executed through the wireless communication terminal or a request of a customer. Accordingly, the present invention relates to a wireless communication terminal and a method for accessing a network, which allow an optimum data service by selecting and accessing a network.

Recently, not only third generation mobile communication technologies such as EV-DO (Evolution-Data Optimized) and wideband code division multiple access (WCDMA), but also fourth generation mobile communication technologies such as Long Term Evolution (LTE), Wi-Fi and WiBro With the development of wireless Internet technologies such as Wibro and WiMAX, users can use various data services such as video transmission and playback, file transfer, and online game contents in addition to simple voice call service using wireless communication terminals. Was done.

In order to receive such data service using a wireless communication terminal, a user must access a third generation mobile communication network or a fourth generation mobile communication network, or access a wireless internet network.

A typical wireless communication terminal stores a connection network setting value for executing each data service as a default value, and connects the data service executed according to the service network.

By the way, since the execution speed, billing, etc. of the data service according to each service network is different from each other, there is a problem that customer dissatisfaction may occur with the use of the data service.

The present invention has been made to solve the above-described problem, in the wireless communication terminal that can be connected to a plurality of networks, by selecting the network according to the characteristics of the data service to be executed through the wireless communication terminal or the customer's request An object of the present invention is to provide a wireless communication terminal and a method for accessing a network thereof, by which an optimal data service can be obtained by allowing access.

A wireless communication terminal according to an embodiment of the present invention for achieving the above object, in a wireless communication terminal that can be connected to a plurality of networks, providing a variety of data services to the user through the connected network, An IP storage unit for receiving and storing an IP (Internet Protocol) address from a network; A setting value storage unit for designating and storing access network setting values according to characteristics of each data service; A service selection unit for selecting a data service to be executed; An access network determination unit determining a connection network setting value corresponding to the selected data service when the data service is selected through the service selection unit; And a network connection unit for selecting an IP address from the IP storage unit in response to the access network setting value determined by the access network determination unit, and transferring the selected IP address to the corresponding network to connect wireless communication.

The above-described wireless communication terminal may further include a setting value input unit for receiving an access network setting value corresponding to at least one data service from a user.

The setting value storage unit specifies a first setting value for designating a connection to a mobile communication network, a second setting value for designating a connection to a Wi-Fi network, and a selection of an access network according to a network state according to the characteristics of the data service. Designate and store any one of the third set values.

The above-described wireless communication terminal includes: a network query unit for querying an accessible network within a predetermined range when the access network setting value of the data service selected by the service selecting unit is designated as the third setting value; And a network comparison unit comparing each state of the networks queried by the network inquiry unit. In this case, the network connection unit selects the network having the best state according to the result compared by the network comparison unit, and switches the selection of the IP address according to the selected network.

The above-described wireless communication terminal, network change determination unit for determining whether or not to change the wireless Internet network; If it is determined that the wireless Internet network has changed, IP address assignment unit for receiving a new IP address from the newly connected wireless Internet network; And an IP updater for updating an IP address of a pre-stored wireless Internet network with a new IP address assigned through the IP address assignment unit.

Network connection method of a wireless communication terminal according to an embodiment of the present invention for achieving the above object, a network connection method of a wireless communication terminal that can be connected to a plurality of networks and provides a variety of data services to the user through the connected network The method comprising: specifying and storing an access network setting value according to a characteristic of each data service; Receiving an IP address from each accessible network and storing the IP address in an IP storage unit; Selecting a data service to be executed; Determining an access network setting value corresponding to the data service selected by the data service selection step; Selecting an IP address from the IP storage unit in response to the access network setting value determined by the access network determining step; And connecting the wireless communication by transferring the selected IP address to a corresponding network.

The above-described method for accessing a network of a wireless communication terminal may further include receiving an access network setting value corresponding to at least one data service from a user.

In the storing of the access network setting value, according to the characteristics of the data service, a first setting value for designating a connection to a mobile communication network, a second setting value for designating a connection to a wireless Internet network, and a selection of an access network according to network conditions are specified. Designate and store any one of the third set values.

The above-described method for accessing a network of a wireless communication terminal may include: querying an accessible network within a predetermined range when an access network setting value of a data service selected by the data service selecting step is designated as a third setting value; Comparing respective states for the networks queried by the network lookup step; And selecting a network having the best state according to the result compared by the network comparison step.

The IP address selection step switches the selection of the IP address according to the network selected by the network selection step.

The above-described method for accessing a network of a wireless terminal includes determining whether a wireless Internet network is changed among accessible networks; If it is determined that the wireless Internet network is changed, receiving a new IP address from the newly connected wireless Internet network; And updating the pre-stored IP address of the wireless Internet network with the assigned new IP address.

According to the present invention, in a wireless communication terminal that can be connected to a plurality of networks, a network can be selected and connected according to the characteristics of a data service to be executed or a customer's request through the corresponding wireless communication terminal, Data service will be available.

In addition, since the network can be appropriately switched in consideration of the state of the surrounding network to receive the data service, it is possible to increase customer satisfaction with the wireless communication service.

1 is a view schematically showing the configuration of a wireless communication terminal according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a network connection by the wireless communication terminal of FIG. 1.
3 is a flowchart illustrating a network access method of a wireless communication terminal according to an embodiment of the present invention.

Hereinafter, a wireless communication terminal and a network connection method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the configuration of a wireless communication terminal according to an embodiment of the present invention. Here, the wireless communication terminal 100 is not only a third generation mobile communication network such as EV-DO (Evolution-Data Optimized), Wideband Code Division Multiple Access (WCDMA), or a fourth generation mobile communication network such as Long Term Evolution (LTE), but also Wi-Fi. It refers to a terminal that can connect to a wireless Internet network such as (WiFi), Wibro, WiMAX, and provide various data data services to the user through the connected network.

EV-DO is a code division multiple access (CDMA) based wireless data communication technology, and time division multiple access (TDMA) is used to maximize both the data rate and the total system data rate of each user. Of course, multiplexing techniques, including code division multiple access (CDMA), are used. EV-DO was standardized by the 3GPP2 (3 ^rd Generation Partnership Project2) as part of the CDMA2000 family standard has been adopted by many of the world where mobile phone service providers of building a CDMA network, particularly before.

WCDMA was standardized in 3GPP under the name UMTS. WCDMA is a broadband spread-spectrum mobile radio interface that uses direct sequence code division multiple access signal processing to support higher speeds and more users than time division multiple access used in 2G GSM networks. Since it is a 3rd generation communication protocol based on the Global System for Mobile communication (GSM), there are components that play similar roles, and parts that have a similar internal structure with different names (for example, NodeB- RNC and the relationship between BTS-BSC, etc.) are also many.

LTE refers to a high-speed wireless data packet communication standard that is 12 times faster than HSDPA (High Speed Downlink Packet Access). The channel bandwidth is 1.25 to 20 MHz, and the maximum transmission rate of downlink based on the 20 MHz bandwidth is 100 Mbps. The maximum transmission rate of uplink is 50 Mbps. Wireless multiple access and multiplexing is based on orthogonal frequency division multiplexing (OFDM), and high-speed packet data transmission is based on multiple input multiple output (MIMO).

Wi-Fi (Wireless Fidelity) is a short-range wireless communication technology, a brand name indicating that the product based on the IEEE 802.11 wireless communication standard. The main purpose of Wi-Fi is to make information easier to access, coexist with peripherals for greater compatibility, and use wireless access to applications, data, media, and streams to avoid complexity. In order to use Wi-Fi, an access point (AP), which is a connection point, is required.

Wibro (Wireless Broadband Internet) means wireless broadband Internet service. WiBro's unique feature is that it can be used anytime and anywhere while using the Internet like 3G network of mobile phones and smartphones. Theoretically, the maximum transmission speed is 10 Mbps, the maximum transmission distance is 1 km, and can be used while moving at 120 km / h. WiBro's average speed is less than 100 Mbps broadband, but it is faster than 3G networks such as smartphones.

WIMAX (World Interoperability for Microwave Access) is an IEEE 802.16d compliant wireless technology developed by Intel Corporation, which aims to be the technology standard for portable Internet. This technology compensates for the shortcomings of Wi-Fi, which has a high speed but a narrow radius. In theory, the transmission distance is about 45 km in an obstacle-free area. The transfer rate is up to 75 Mbps, but in practice it is about 5 to 10 Mbps. Unlike WiBro, however, it does not guarantee continuous network connection when moving from one base station to another.

Referring to FIG. 1, the wireless communication terminal 100 according to the embodiment of the present invention includes an IP storage unit 102, a setting value storage unit 104, a service selection unit 106, a connection network determination unit 108, Network connection unit 110, set value input unit 112, network inquiry unit 114, network comparison unit 116, network change determination unit 118, IP address assignment unit 120 and IP update unit 122 can do.

The IP storage unit 102 receives and stores an IP (Internet Protocol) address from a nearby accessible network. For example, if the wireless communication terminal 100 is a terminal capable of LTE communication, and there is a Wi-Fi network that can be connected to the periphery, the IP storage unit 102 receives and stores IP addresses from the LTE network and the Wi-Fi network, respectively.

The setting value storage unit 104 designates and stores access network setting values according to the characteristics of each data service. That is, by using the wireless communication terminal 100 according to an embodiment of the present invention, it is possible to execute a data service such as a video transmission / reception service, a communication service such as chat, a data download service, etc. The setting value storage unit 104 is executable. Set and save the access network setting value according to the characteristics of each data service. At this time, the setting value storage unit 104 is set to the default value at the time of manufacture of the wireless communication terminal 100 in the case of the data service basically provided by the wireless communication terminal 100 to the setting value storage unit 104. Can be stored. In addition, in the case of the data service extended by the user of the wireless communication terminal 100, the setting value storage unit 104 is the access network setting value set by the service provider providing the data service or the access network setting value set by the user You can also save it by specifying. In addition, when the access network setting value for a specific data service is not specified, the setting value storage unit 104 may determine a protocol used for the corresponding data service, and designate and store a corresponding access network setting value according to the determined protocol. have. For example, it is determined whether the protocol used for a specific data service is a Real Time Protocol (RTP) protocol or a Hyper Text Transfer Protocol (HTTP) protocol, and the access network setting value may be automatically designated and stored according to the determined result. .

According to the characteristics of each data service, the setting value storing unit 104 may designate a connection network setting value for designating a connection of a data service and a third generation mobile communication network such as EV-DP and WCDMA or a fourth generation mobile communication network such as LTE, Wi-Fi, Among the network setting values for designating the connection of the wireless Internet network such as WiBro, WiMAX, etc., and the network settings for specifying the optimal network connection according to the result of the comparison and comparing the state of the mobile communication network with the accessible mobile communication network. Any one can be matched and stored. In addition, when there are a plurality of wireless Internet networks that can be connected to the surroundings, the setting value storage unit 104 may designate an access network setting value for selecting an optimal network by comparing the states of the respective wireless Internet networks.

The service selector 106 selects a data service to be executed. For example, when a user of the wireless communication terminal 100 wants to transmit a video file stored in the wireless communication terminal 100 to another wireless communication terminal or the web, the service selector 106 designates the video file. After setting the destination, you can select the video file transfer service.

When the data service is selected through the service selection unit 106, the access network determining unit 108 determines the access network setting value corresponding to the selected data service. For example, when the video file transmission service is selected by the service selection unit 106 as described above, the access network determination unit 108 searches the setting value storage unit 104 to set the access network corresponding to the selected video file transmission service. Determine the value.

The network connection unit 110 selects an IP address from the IP storage unit 102 in response to the access network setting value determined by the access network determination unit 108, and transmits the selected IP address to the corresponding network to connect wireless communication. For example, if the video file transmission service is selected by the service selection unit 106 as described above, and a network setting value for designating a connection to the Wi-Fi network is set for the video file transmission service, the network connection unit 110 The IP storage unit 102 selects an IP address corresponding to the Wi-Fi network, and transfers the selected IP address to the Wi-Fi network to connect wireless communication.

The setting value input unit 112 receives an access network setting value corresponding to at least one data service from a user. That is, the setting value input unit 112 is designated as a default value at the time of manufacture of the wireless communication terminal 100 or by the data service provider, and the access network setting value of each data service stored in the setting value storage unit 104. For the user, the user may receive a change value of the access network setting value for the corresponding data service. In addition, the setting value input unit 112 displays a message requesting the designation of the access network setting value on the screen of the wireless communication terminal 100 for the data service for which the access network setting value is not specified, and accordingly the access network setting value from the user. You can also get input.

When the access network setting value of the data service selected by the service selecting unit 106 is a setting value for designating the selection of the access network according to the state of the network, the network inquiry unit 114 inquires an accessible network within a certain range. For example, when the access network setting value of the data service selected by the service selecting unit 106 is a setting value for selecting a good network from the LTE network and the wireless Internet network, the network inquiry unit 114 is configured to set the surrounding schedule. You can query the Wi-Fi network, WiBro network, WiMAX network, etc. within the range.

The network comparison unit 116 compares respective states of the network queried by the network inquiry unit 114. That is, in the above example, the network comparison unit 116 may compare the state of each wireless Internet network inquired by the network inquiry unit 114 with the state of the LTE network. Here, the network comparison unit 116 may use data upload speed, data download speed, and the like as network state comparison information.

The network change determination unit 118 determines whether the wireless Internet network has been changed. For example, the network change determination unit 118 changes the access point even if the accessible wireless Internet network is changed from the Wi-Fi network to the WiBro network or the accessible Wi-Fi network is maintained. Determine whether or not.

If it is determined that the wireless Internet network is changed by the network change determination unit 118, the IP address assignment unit 120 receives a new IP address from the newly connected wireless Internet network.

The IP updating unit 122 updates the IP address of the wireless Internet network previously stored in the IP storage unit 102 with the new IP address assigned through the IP address allocating unit 120. That is, the IP updater 122 stores the new IP address assigned through the IP address assignment unit 120 in the IP storage unit 102, and deletes the previously stored IP address of the previous wireless Internet network.

FIG. 2 is a diagram illustrating an example of a network connection by the wireless communication terminal of FIG. 1. Here, it is assumed that the wireless communication terminal 100 can be connected to the LTE network 200 and the Wi-Fi network 300.

1 and 2, according to a characteristic of a data service or a user's request, the setting value storage unit 104 may access the first data service such as a video call service through the LTE network 200 at all times. Specify and store, and the second data service such as a download service is always specified by the connection network settings to be connected through the Wi-Fi network 300, the third data service such as chat, LTE network 200 or Wi-Fi network In accordance with the state of 300, the network can be selected and stored so as to select an optimal network to access. Here, each data service only matches the access network setting values for convenience of explanation, and the access network setting values for the data service are specified at the time of manufacture of the wireless communication terminal 100 or the creator of the application for the data service. It may be designated by or may be specified or changed by the user. In addition, the setting value storage unit 104 may automatically designate and store the access network setting value according to the protocol used for the data service.

At this time, the IP storage unit 102 stores the IP address allocated from the LTE network 200 and the IP address allocated from the surrounding Wi-Fi network 300.

When the user selects the first data service through the service selection unit 106, the access network determination unit 108 searches the setting value storage unit 104 to determine the access network setting value corresponding to the first data service, and the network connection unit The 110 selects an IP address corresponding to the LTE network 200 from the IP storage unit 102 based on the determined access network setting value and transmits the IP address to the eNodeB or HeNB 210 of the LTE network 200. The IP address transmitted to the LTE network 200 may be delivered to the service network through the Serving Gateway (S-GW) 220 and the Packet Data Network Gateway (P-GW) 230. In this case, the mobile mobility entity (MME) 240 is responsible for signal control between the eNodeB / HeNB 210 and the S-GW 220, and determines where to route the incoming data from the wireless communication terminal 100. The PCRF (Policy and Charging Rule Function) 250 determines and manages the policy in the LTE network 200, and the H-AAA 260 provides secure and reliable authentication and authorization for the subscriber. ), And provide accounting function systematically.

When the user selects the second data service through the service selection unit 106, the access network determination unit 108 searches the setting value storage unit 104 to determine the access network setting value corresponding to the second data service, and the network connection unit The 110 selects an IP address corresponding to the Wi-Fi network 300 from the IP storage unit 102 based on the determined access network setting value and transmits the IP address to the AP (Access Point) 310 of the Wi-Fi network 300. The IP address transmitted to the Wi-Fi network 300 may be delivered to the service network through the Internet Service Provider (ISP) 320. At this time, the AAA (330, 350) performs the authentication, authorization verification, billing function for the subscriber connected via the AP 310, or authenticates the subscriber while communicating with the ISP 320 via the PDIF / ePDG (340) , Authority verification, billing functions.

When the user selects the third database through the service selection unit 106, the network comparison unit 116 compares the state of the LTE network 200 and the Wi-Fi network 300, the network connection unit 110 is the network comparison unit According to the result compared by 116, the wireless network may be connected while switching the connection between the LTE network 200 and the Wi-Fi network 300.

3 is a flowchart illustrating a network access method of a wireless communication terminal according to an embodiment of the present invention.

1 to 3, the setting value input unit 112 may receive an access network setting value corresponding to at least one of data services executable by the wireless communication terminal 100 (S302).

The setting value storage unit 104 designates and stores an access network setting value according to the characteristics of each data service (S304). At this time, the setting value storage unit 104 is a data service provided by the wireless communication terminal 100, the setting value storage unit by setting the connection network setting value to the default value at the time of manufacture of the wireless communication terminal 100 Can be stored at 104. In addition, in the case of the data service extended by the user of the wireless communication terminal 100, the setting value storage unit 104 is the access network setting value set by the service provider providing the data service or the access network setting value set by the user You can also save it by specifying.

The IP storage unit 102 receives and stores an IP (Internet Protocol) address from a network that can be connected to the surrounding area (S306).

On the other hand, the network change determination unit 118 determines whether or not to change the wireless Internet network (S308). For example, the network change determination unit 118 changes the access point even if the accessible wireless Internet network is changed from the Wi-Fi network to the WiBro network or the accessible Wi-Fi network is maintained. Determine whether or not.

If it is determined by the network change decision unit 118 that the wireless Internet network has been changed, the IP address assignment unit 120 receives a new IP address from the newly connected wireless Internet network (S310).

The IP updating unit 122 updates the IP address of the wireless Internet network previously stored in the IP storage unit 102 with the new IP address assigned through the IP address allocating unit 120 (S312).

The service selector 106 selects a data service to be executed (S314). For example, when a user of the wireless communication terminal 100 wants to transmit a video file stored in the wireless communication terminal 100 to another wireless communication terminal or the web, the service selector 106 designates the video file. After setting the destination, you can select the video file transfer service.

When the data service is selected through the service selection unit 106, the access network determining unit 108 determines an access network setting value corresponding to the selected data service (S316). For example, when the video file transmission service is selected by the service selection unit 106 as described above, the access network determination unit 108 searches the setting value storage unit 104 to set the access network corresponding to the selected video file transmission service. Determine the value.

The network inquiry unit 114 inquires an accessible network within a certain range when the access network setting value of the data service selected by the service selecting unit 106 is a setting value for specifying the selection of the access network according to the state of the network (S318). (S320). For example, when the access network setting value of the data service selected by the service selecting unit 106 is a setting value for selecting a good network from the LTE network and the wireless Internet network, the network inquiry unit 114 is configured to set the surrounding schedule. You can query the Wi-Fi network, WiBro network, WiMAX network, etc. within the range.

The network comparison unit 116 compares each state of the network inquired by the network inquiry unit 114 (S322). That is, in the above example, the network comparison unit 116 may compare the state of each wireless Internet network inquired by the network inquiry unit 114 with the state of the LTE network.

The network connection unit 110 selects an optimal network based on the result compared by the network comparator 116 (S324), and selects a corresponding IP address from the IP storage unit 102 according to the selected network (S326). ). In this case, the network connection unit 110 may switch the selection of the IP address according to the state of the network. In addition, the network connection unit 110 may select an IP address from the IP storage unit 102 in response to the access network setting value determined by the access network determination unit 108. The network connection unit 110 transmits the selected IP address to the corresponding network to connect wireless communication (S328).

100: wireless communication terminal
102: IP storage unit 104: setting value storage unit
106: service selection unit 108: access network determination unit
110: network connection unit 112: set value input unit
114: mens watch club 116: mens watch club
118: network change unit 120: IP address assignment unit
122: IP update unit

Claims (10)

A wireless communication terminal capable of accessing a plurality of networks and providing various data services to a user through an connected network,
An IP storage unit for receiving and storing an IP (Internet Protocol) address from each accessible network;
A setting value storage unit for designating and storing access network setting values according to characteristics of each data service;
A service selection unit for selecting a data service to be executed;
An access network determination unit determining a connection network setting value corresponding to the selected data service when a data service is selected through the service selection unit; And
A network connection unit which selects an IP address from the IP storage unit in response to the access network setting value determined by the access network determination unit, and transfers the selected IP address to the corresponding network to connect wireless communication;
Wireless communication terminal comprising a. The method of claim 1,
A setting value input unit configured to receive an access network setting value corresponding to at least one data service from a user;
Wireless communication terminal further comprises. The method of claim 1, wherein the setting value storage unit,
According to the characteristics of the data service, any one of a first setting value for specifying a connection to a mobile communication network, a second setting value for specifying a connection to a wireless Internet network, and a third setting value for selecting a connection network according to network conditions Wireless communication terminal characterized in that the designation and storing one. The method of claim 3,
A network inquiry unit for querying an accessible network within a predetermined range when an access network setting value of the data service selected by the service selecting unit is designated as the third setting value; And
A network comparison unit comparing each state of the networks queried by the network inquiry unit;
More,
And the network connection unit selects a network having the best state according to the result of comparison by the network comparing unit, and switches the selection of an IP address according to the selected network. The method of claim 3,
A network change determination unit to determine whether to change the wireless Internet network;
An IP address allocator configured to receive a new IP address from a newly connected wireless internet network if it is determined that the wireless internet network has been changed; And
An IP updating unit for updating the previously stored IP address of the wireless Internet network with a new IP address allocated through the IP address allocating unit;
Wireless communication terminal further comprises. In a network access method of a wireless communication terminal capable of accessing a plurality of networks and providing various data services to a user through an access network,
Designating and storing access network setting values according to characteristics of each data service;
Receiving an IP address from each accessible network and storing the IP address in an IP storage unit;
Selecting a data service to be executed;
Determining an access network setting value corresponding to the data service selected by the data service selecting step;
Selecting an IP address from the IP storage unit in response to the access network setting value determined by the access network determining step; And
Connecting the wireless communication by transmitting the selected IP address to a corresponding network;
Network access method of a wireless communication terminal comprising a. The method according to claim 6,
Receiving an access network setting value corresponding to at least one data service from a user;
Network connection method of a wireless communication terminal further comprising. The method of claim 6, wherein the storing of the access network setting value comprises:
According to the characteristics of the data service, any one of a first setting value for specifying a connection to a mobile communication network, a second setting value for specifying a connection to a wireless Internet network, and a third setting value for selecting a connection network according to network conditions A method of accessing a network of a wireless communication terminal, characterized in that for designating and storing one. 9. The method of claim 8,
Querying an accessible network within a predetermined range when an access network setting value of the data service selected by the data service selecting step is designated as the third setting value;
Comparing respective states of the networks queried by the network lookup step; And
Selecting a network having the best state according to the result compared by the network comparing step;
More,
The IP address selection step of the network access method of the wireless communication terminal, characterized in that for switching the selection of the IP address according to the network selected by the network selection step. 9. The method of claim 8,
Determining whether the wireless Internet network is changed among accessible networks;
If it is determined that the wireless Internet network is changed, receiving a new IP address from a newly connected wireless Internet network; And
Updating the previously stored IP address of the wireless Internet network with the new IP address;
Network connection method of a wireless communication terminal further comprising.

Images