KR100964658B1 - Method for processing multi-mode service of mobile phone by using global positioning system - Google Patents

Abstract

The present invention provides a dual mode terminal that does not perform handover by cross mode when 2G is spread over a nationwide network and a relatively small number of new 3G service areas in a mobile communication terminal using dual mode. It is an object of the present invention to provide a multi-mode network system of a mobile communication terminal using GPS for notifying a 3G terminal user.

To this end, the present invention provides a mobile communication terminal supporting a multi-mode having a plurality of different first and second communication bands and a communication providing one of the first and second communication bands to the mobile communication terminal. In a mobile communication system including a network, a multi-mode service processing method of the communication network for the mobile communication terminal using GPS, wherein the communication network obtains current location information of the mobile communication terminal using satellite network GPS. Making a step; Obtaining, by the communication network, a service ID of the mobile communication terminal through a base station; And determining, by the communication network, whether the multi-mode service is available for the mobile communication terminal based on the acquired location information and the service ID of the mobile communication terminal. It can provide a convenient effect on use.

Mobile terminal, 2G, 3G, handover

Description

Method for processing multi-mode service of mobile phone by using global positioning system

1 is a communication network block diagram of a mobile communication terminal to which the present invention is applied.

2 is a flowchart illustrating an operation flow according to an embodiment of the present invention.

3 is a flowchart illustrating an operation flow according to another embodiment of the present invention.

The present invention relates to a method of processing a service in a multi-mode of a mobile communication system, and more particularly to roaming from a wideband multiple access (WCDMA) third generation (3G) network to a second generation (2G) network using coordinates of GPS. A multimode network system of a mobile communication terminal using GPS for processing handover.

Wireless communication networks, including fixed wireless and cellular type mobile communication networks, continue to evolve. Including code division multiple access (CDMA), time division multiple access (TDMA), pan-European cellular mobile communication system (GSM), advanced mobile phone system (AMPS) and digital AMPS (D-AMPS) (IS-135 TDMA) There are several available technologies for providing wireless communication.

These networks are constantly being developed around the world. Many equipment suppliers now build various systems and typically work through a group of standards to ensure the sharedness and interoperability of various networks.

As wireless communication networks enter the 21st century, new types of wireless networks known as wideband code division multiple access (WCDMA) or wideband packet code division multiple access (WPCDMA) based on third generation (3G) networks have been developed. There is. These third generation wireless systems are slowly being realized for future Public Land Mobile Networks (FPLMNs).

When a 3G network is implemented, service coverage is implemented gradually, for example by moving slowly from 2G to 3G. Initially, due to the possibility of drop-out due to lack of coverage at some geographic location, 3G coverage may be limited. To prevent this, a dual mode wireless mobile terminal can be used, which works in 2G and 3G systems.

If a 3G network is not available or cannot access the mobile user's physical location, it is desirable to intelligently hand over and roam from the 3G network to the 2G network.

When using the dual mode terminal of the 2G and 3G, there is a problem that the terminal user does not receive the desired service when handover and roaming are not performed between both sides.

In addition, the dual-mode terminal supports handover for each mode separately, but in this case, complex signaling must be done and modification of the software (S / W) for each mode conversion is performed at both sides of the exchange or terminal. There was a complicated problem.

In addition, since the receiving end and the modem for each mode must be activated in the middle, there are many problems such as complicated processing and current consumption.

Therefore, the present invention has been proposed to solve the above-mentioned problems. In the mobile communication terminal using dual mode, when 2G is spread over the nationwide network and the new 3G service area is relatively small, handover for each mode is not performed. It is an object of the present invention to provide a multi-mode network system of a mobile communication terminal using a GPS to notify a 3G terminal user whether to support the 3G terminal when a user wants to use the 3G service as a dual mode terminal.

In order to achieve the above object, the present invention provides a mobile communication terminal supporting a multi-mode having a plurality of different first and second communication bands and a communication band of any one of the first and second communication bands in the mobile communication terminal. In a mobile communication system including a communication network providing a service, the method of processing a multi-mode service of the communication network to the mobile communication terminal using GPS,

Obtaining, by the communication network, current location information of the mobile communication terminal using satellite network GPS;

Obtaining, by the communication network, a service ID of the mobile communication terminal through a base station;

And determining, by the communication network, whether multi-mode service is available for the mobile communication terminal based on the obtained location information and service ID of the mobile communication terminal.

In addition, the present invention provides a mobile communication terminal that supports a multi-mode having a plurality of different first and second communication bands and the communication to provide a communication band service of any one of the first and second communication bands to the mobile communication terminal. In a mobile communication system including a network, the multi-mode service processing method of the communication network for the mobile communication terminal using GPS,

Obtaining, by the communication network, current location information of the mobile communication terminal using satellite network GPS;

Obtaining, by the communication network, a service ID of the mobile communication terminal and a number of a receiving terminal through a base station;

Determining whether the receiving terminal can receive a multi-mode service for the mobile communication terminal by transmitting the obtained location information of the mobile communication terminal, the ID of the mobile communication terminal and the number of the receiving terminal to the switching center; ,

And performing the multi-mode service according to the determination result.

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

1 shows a block diagram of a communication network 100 in accordance with an embodiment of the present invention. The communication network 100 includes a wireless telephone network comprising an originating terminal (MS) 120 coupled to a WCDMA originating network 140 in service by a radio frequency (RF) communication link.                     

The originating terminal 120 is equipped with a wireless cellular type mobile station such as a personal communication service (PCS) or a cellular telephone but also comprises a computer, a personal digital assistant (PDA), or other wireless terminal, for example. Is preferred. Outgoing WCDMA network 140 is coupled to a transit network or communication link 160, which may have a public switched telephone network (PSTN) but also other networks, including an optical network, if desired. Can be.

Transient network 160 interfaces and communicates electrical signals including digitalized voice calls between originating network 140 and end network 180.

End network 180 may be the same as or different from originating network 140 and may include AMPS, D-AMPS, TDMA, CDMA, GSM, and IS-95 networks.

End network 180 is shown as a WCDMA network. The end network 180 is coupled to and serviced by the end terminal 150 via an RF link, which may have a fixed or mobile station such as a wireless cellular or PCS subscriber.

The wireless station and the network have codecs to encode and decode digital signals communicated over the transition network 160.

The originating WCDMA network 140 includes a base transceiver station (BTS) 130 that serves the originating or fixed mobile station 120 over an RF link.

Although only one is shown for purposes of explanation and brevity, each BTS 130 serves multiple MSs 120.

Originating network 140 includes a radio network controller (RNC) 132 and a network switching system (NSS) 134.

The BTS 130 and RNC 132 are sometimes referred to collectively as a radio network system (RNS) 133. RNC 132 interfaces voice calls between multiple BTSs 130 and NSS 134, where only one is shown to illustrate the present invention, but RNC 132 typically includes multiple BTSs 130; Service.

Although only one is shown for illustrative purposes, the NSS 134 serves multiple RNCs 132. NSS 134 includes a home location register (HLR), a mobile location determining node and a visitor location register (VLR) that stores and stores various information of MS 120 currently serviced by originating network 140.

The end network 180 includes a BTS 143 that services the end station 150 and typically services the MS 120. End network 180 also includes RNC 142 and NSS 144.

The end network 180 may operate according to the same operating protocol as the originating network 140, where both networks are WCDMA networks.

In addition, the end network 180 may be different from the outgoing network 140, ie the outgoing network may be WCDMA and the end network may be based, for example, on AMPS, D-AMPS, GSM, TDMA or IS-95 protocols. have.

In these types of networks, known switching centers (BSCs) and mobile switching centers (MSCs) perform functions similar to the functions of NSS 134 and RNC 132 respectively in WCDMA networks. NSS 144 has HLR and VLR to maintain registration of information for all MSs 150 currently serviced by end network 180.

Transient network 160 is preferably a PSTN, and originating NSS 134 and terminating NSS 144 exchange digitalized voice data that is preferably encoded and transmitted in pulse code modulation (PCM) format.

Although PCM is the preferred encoding format, other encoding formats are available in accordance with the present invention. Similarly, other transmission rates are also contemplated by the present invention.

In general, the digitalized voice data transmitted over the transition network 160 may be in any format that is compatible with and supported by both the originating network 140 and the end network 180.

In 3G WCDMA networks, in particular when the 3G network is implemented first, the MS 120 may be equipped with a dual mode mobile terminal that can be used for 3G and 2G networks.

The problem with switching from 3G to 2G networks (while roaming or handover) is that the two networks are not synchronized.

The dual mode terminal 120 requires confirmation of the control channel frequency to be measured in the 2G system.

In most 2G systems, there are more than 300 frequency channels, at which frequencies a control channel can be transmitted, which need not necessarily be a fixed assigned frequency.

In GSM, the control channel frequency changes and is selected by the service provider, while in some PCS networks, such as IS 136, the control channel is fixed at a particular frequency.

Without means for communicating the location of the control channel from the 3G network communication to the terminal according to the present invention, the terminal 120 needs to search the channel of the 2G network and all 300 frequencies to find the synchronization channel (SCH). .

This control channel frequency search can take from 5ms to 600 milliseconds, which is very inefficient, increases the possibility of drop-out and requires a long surge, which consumes a lot of power, so that the battery or power supply of the terminal 12 Exhausts.

Once the control channel frequency is determined, terminal 12 measures a carrier channel, such as signal strength, and reads information from this carrier, such as who is operating the 2G network via, for example, a base station identity code (BSIC). .

Terminal 12 also determines whether the correct cell has been selected (rather than executed by common channel interference). Once measurements are made, handover and roaming occur by measuring and ranking signal strengths in order and determining which channel makes this transmission.

FIG. 2 is a flowchart illustrating an operation flow according to an embodiment of the present invention. When operation is started 201, location information of a 3G terminal user is extracted using GPS coordinates using satellite communication (202).

When the user of the 3G terminal is located in the area that serves 3G, the user can receive the desired service without any problem, but when the user of the 3G terminal is located in the area that serves only 2G, the user cannot receive the 3G service.

In order to find out whether the 3G terminal user can properly receive the service, the service ID of the 3G terminal user is obtained through the base station (203).                     

Obtaining and analyzing the service ID of the 3G terminal user (203), it can be seen whether or not the 3G terminal user is located in the area that can receive the 3G service.

After obtaining the service ID of the 3G terminal user (203) and comparing the service ID of the 3G terminal user with the DB (Data Base) of the 3G terminal user through the base station (204), it is possible to determine whether the 3G service is possible (205). In response to the determination result, if the 3G service is available, the corresponding 3G service is provided (206). If the 3G service is not available according to the determination result, the 3G terminal user is notified that the 3G service is not possible (207). Do it.

3 is a flowchart illustrating an operation flow according to another embodiment of the present invention. When operation is started 301, location information of a 3G terminal user is extracted using GPS coordinates using satellite communication (302).

When the user of the 3G terminal is located in the area that serves 3G, the user can receive the desired service without any problem, but when the user of the 3G terminal is located in the area that serves only 2G, the user cannot receive the 3G service.

In order to find out whether the 3G terminal user can properly receive the service, the service ID of the 3G terminal user is obtained through the base station (303).

The service ID of the 3G terminal user is obtained (303), and then the terminal number of the receiver using the 3G terminal is obtained (304).

Then, the location information 302 and the ID 303 and the recipient number 304 of the 3G terminal user acquired at the base station are notified to the switching center 305 so that the receiver using the 3G terminal can receive the 3G service. Determine if there is.

That is, the receiving party notifies whether the service available to the receiving party using the 3G terminal is available (306).

Of course, at this time, the receiver using the 3G terminal may be a terminal user using 2G.

That is, it does not matter whether the receiver uses a 2G terminal or a 3G terminal.

Notifying the calling party using the 3G terminal whether or not the service using the terminal is possible (306), and if the 3G service is available, provides the corresponding 3G service (308), and according to the determination result If the service is unavailable, the 3G terminal caller is informed (309) that the 3G service is unavailable.

As described in detail above, the present invention provides a dual communication that does not perform handover for each mode when 2G is laid out in a nationwide network and a relatively small network has a new 3G service area in a mobile communication terminal using 2G and 3G dual mode. When the user wants to use the 3G service as a mode terminal, the 3G terminal user can know whether or not the service is provided by the 3G terminal user.

Claims (5)

A mobile terminal including a mobile communication terminal supporting a multi-mode having a plurality of different first and second communication bands and a communication network providing a communication band service of any one of the first and second communication bands to the mobile communication terminal. In a communication system, a multi-mode service processing method of the communication network for the mobile communication terminal using GPS, Obtaining, by the communication network, current location information of the mobile communication terminal using satellite network GPS; Obtaining, by the communication network, a service ID of the mobile communication terminal through a base station; And Determining, by the communication network, whether the multi-mode service is available for the mobile communication terminal based on the acquired location information and the service ID of the mobile communication terminal; and multimode of the mobile communication terminal using GPS. How to handle the service. The method of claim 1, The first and second communication bands are the second generation (hereinafter, '2G') and third generation (hereinafter, '3G') communication bands, respectively. The multimode service is a multi-mode service processing method of a mobile communication terminal, characterized in that for providing the 3G service of the 2G and 3G. A mobile terminal including a mobile communication terminal supporting a multi-mode having a plurality of different first and second communication bands and a communication network providing a communication band service of any one of the first and second communication bands to the mobile communication terminal. In a communication system, a multi-mode service processing method of the communication network for the mobile communication terminal using GPS, Obtaining, by the communication network, current location information of the mobile communication terminal using satellite network GPS; Obtaining, by the communication network, a service ID of the mobile communication terminal and a number of a receiving terminal through a base station; Determining whether the receiving terminal can receive a multi-mode service for the mobile communication terminal by transmitting the obtained location information of the mobile communication terminal, the ID of the mobile communication terminal and the number of the receiving terminal to the switching center; And And performing the multi-mode service according to the determination result. The method of claim 3, wherein The first and second communication bands are the second generation (hereinafter, '2G') and third generation (hereinafter, '3G') communication bands, respectively. The multimode service is a multi-mode service processing method of a mobile communication terminal, characterized in that for providing the 3G service of the 2G and 3G. The method of claim 3, wherein And the receiving terminal is a multimode terminal using either 2G or 3G.

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