KR101038982B1 - Method for Hand-over Between Asynchronous Communication Network and Synchronous Communication Network Using Radio Frequency Identification, Mobile Communication Terminal and RFID Detector therefor - Google Patents

Abstract

The present invention provides a method for handover from an asynchronous network to a synchronous network using an RFID for handovering a mobile communication terminal communicating with an asynchronous mobile communication system in an asynchronous network area to a synchronous mobile communication system, and a mobile communication terminal for the same. It relates to an RFID detection device.

The present invention provides a first step of transmitting a pilot signal when a predetermined period of a RFID tag of a dual band dual mode mobile communication terminal arrives; As the RFID detector detects a pilot signal transmitted from the dual band dual mode mobile communication terminal and transmits a handover command signal, the handover command signal is transmitted from the RFID detector to the RFID tag of the dual band dual mode mobile communication terminal. Receiving a second step; And a third step of performing a handover procedure from the asynchronous mobile communication system to the synchronous mobile communication system according to the handover command signal received in the second step, wherein the mobile terminal user communicates with the asynchronous mobile communication system such as a building. Since the communication with the synchronous mobile communication system can be performed in a place where performance is not smooth, it can be provided with a high quality service that does not cause service disconnection.

Handover, RFID

Description

Method for Hand-over Between Asynchronous Communication Network and Synchronous Communication Network Using Radio Frequency Identification, Mobile Communication Terminal and RFID Detector therefor}

1 is a view showing the configuration of a mobile communication network according to the present invention;

2 is a view showing the configuration of a mobile communication terminal according to the present invention;

3 is a view showing the configuration of an RFID detecting apparatus according to the present invention;

4 is a flowchart illustrating an embodiment of a handover method according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: dual band dual mode mobile communication terminal 20: asynchronous mobile communication system

30: synchronous mobile communication system 40: Internet

50: RFID detection device 110, 510: antenna

120, 520: diplexer 130: asynchronous module

131: asynchronous wireless transceiver 133: asynchronous modem

135, 145, 152: Memory 137, 147: DPRAM

140: sync module 141: synchronous wireless transceiver                 

143: synchronous modem unit 150: application processor

160: RFID processor 170: RFID TAG

210: Node B / RNC 220: Asynchronous MSC

230, 330: No.7 common signal network 240, 340: SMSC

250, 350: SCP 260, 360: HLR

270: SGSN 280: GPRS

290: GGSN 310: BTS / BSC

320: MSC 370: PDSN

380: DCN 530: RF transmitter

540: RF receiver 550: main processor

The present invention relates to a handover method from an asynchronous network to a synchronous network using RFID, and more particularly, to handover a mobile communication terminal communicating with an asynchronous mobile communication system in an asynchronous network area to a synchronous mobile communication system. The present invention relates to a handover method from an asynchronous network to a synchronous network using RFID, a mobile communication terminal, and an RFID detection apparatus for the same.

With the development of mobile communication technology and the evolution of communication networks, various types of mobile communication systems are being developed. Accordingly, the IMT-2000 system has been developed to solve the global roaming problem between mobile communication systems. IMT-2000 system is divided into CDMA 2000 based synchronous system and WCDMA based asynchronous system.

In addition, in order to support global roaming between mobile communication systems, a mobile communication terminal (Dual-Band Dual-Mode mobile communication terminal) capable of being used in both a synchronous system and an asynchronous system has been developed. By using the service, different types of services can be used in each of the asynchronous system domain and the synchronous system domain.

Currently, asynchronous mobile communication systems are being built around areas with high service demands. Accordingly, synchronous mobile communication systems have evolved to include service areas of asynchronous system. When a user moves between an asynchronous mobile communication system and a synchronous mobile communication system, handover between systems is required for continuous service provision.

However, in the urban area where the asynchronous mobile communication system and the synchronous mobile communication system coexist, when the mobile communication terminal which communicates with the asynchronous mobile communication system moves to an area where radio wave strength of the asynchronous mobile communication system is weak, such as a building, mobile communication The terminal should perform a handover to a synchronous mobile communication system having a greater radio wave strength than an asynchronous mobile communication system, but since the handover from the asynchronous mobile communication system to the synchronous mobile communication system is performed in units of cells, Handover cannot be performed.

Therefore, the mobile communication terminal moving into the building continues to communicate with the asynchronous mobile communication system with weak radio wave strength, and if the radio density in the building is low, a call break occurs, so that the service on the mobile communication terminal is not provided smoothly. Problems often fail.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and when a mobile communication terminal communicating with an asynchronous mobile communication system moves to an area where a radio wave strength of the asynchronous mobile communication system is weak, such as a building, the mobile terminal is moved to a synchronous mobile communication system. There is a technical problem to provide a handover method from the asynchronous network to the synchronous network using the RFID to perform the over and the mobile communication terminal and the RFID detection device for this.

The present invention for achieving the above object is a dual-band dual-mode mobile communication terminal performing communication with the asynchronous mobile communication system on a communication network in which the asynchronous mobile communication system and the synchronous mobile communication system overlaps the signal transmitted from the RFID detection device As a handover method from an asynchronous network to a synchronous network using RFID to perform a handover to a synchronous mobile communication system,

The dual band dual mode mobile communication terminal includes an asynchronous modem unit, a synchronous modem unit, an RFID tag and an RFID processor for transmitting a pilot signal every predetermined period,

A first step of transmitting a pilot signal when a predetermined period of the RFID tag of the dual band dual mode mobile communication terminal arrives; As the RFID detection device detects a pilot signal transmitted from the dual band dual mode mobile communication terminal and transmits a handover command signal, the RFID tag of the dual band dual mode mobile communication terminal is transmitted from the RFID detection device. Receiving a handover command signal to be received; And a third step of performing a handover procedure from the asynchronous mobile communication system to the synchronous mobile communication system according to the handover command signal received in the second step.

Another embodiment of the present invention includes an asynchronous modem unit for communicating with an asynchronous mobile communication system and a synchronous modem unit for communicating with a synchronous mobile communication system. A dual band dual mode mobile communication terminal for performing a handover to a synchronous mobile communication system according to a signal transmitted from an RFID detector on a communication network in which a synchronous mobile communication system overlaps.

An RFID tag which transmits a pilot signal at predetermined periods and receives a handover command signal transmitted from the RFID detection device; As the RFID detection device detects a pilot signal transmitted from the RFID tag and transmits a handover command signal, when the RFID detection device receives a handover command signal transmitted from the RFID tag, the RFID detection device transmits the handover command signal to the asynchronous modem unit to transmit the handover command signal. And an RFID processor to perform handover from the system to the synchronous mobile communication system.

Another embodiment of the present invention provides an RFID detection apparatus for transmitting and receiving signals to and from a mobile communication terminal that is selectively connected to an asynchronous mobile communication system and a synchronous mobile communication system, and allowing the mobile communication terminal to perform a handover to the synchronous mobile communication system. The mobile communication terminal includes an RFID tag for transmitting a pilot signal at a predetermined period,

Upon receiving the pilot signal transmitted from the RFID tag of the mobile communication terminal, a handover command signal for detecting that the mobile communication terminal to be handed over to the synchronous mobile communication system has entered the area and handing over to the synchronous mobile communication system. Transmits to the mobile communication terminal.

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

1 is a view showing the configuration of a mobile communication network according to the present invention.

The dual-band dual-mode mobile communication terminal 10 may use a voice and data service by wirelessly connecting to the asynchronous mobile communication system 20 and the synchronous mobile communication system 30, respectively, and using an RFID tag. A pilot signal is transmitted for each preset period, including a (Radio Frequency Identification Tag).

The asynchronous mobile communication system 20 is a wireless network controller (Node B / RNC 210) for controlling Node B and Node B as a base station for wireless section communication with the dual band dual mode mobile communication terminal 10, and a wireless network. Asynchronous exchange (MSC, 220), asynchronous switch 220 and the No.7 common signal network 230 is connected to the controller 210 and performs a call exchange to provide a service to the dual-band dual-mode mobile communication terminal 10 Short Message Service Center (SMSC, 240), Intelligent Network Controller (SCP, 250) and Home Location Register (HLR, 260), Wireless Network Controller 210 and General Packet Radio Service (GPRS) Network 280 Serving support node (SGSN) 270, SGSN 270, and GPRS (General Packet Radio Service) networks that are connected between each other to maintain a location track of the dual band dual mode mobile communication terminal 10 and perform access control and security functions. 280, and connected to the Internet 40 to connect with external packets. It includes a GGSN (Gateway GPRS Support Node, 290) which supports.

In addition, the synchronous mobile communication system 30 is connected to the base station controller (BTS / BSC, 310), the base station controller (BTS / BSC, 310) for controlling the base station and the base station for supporting the wireless section communication with the dual band dual mode mobile communication terminal 10 A short message service center (SMSC, 340), an intelligent network controller (SCP, 350), which is connected through a switch (MSC) 320, a switch 320, and a No. 7 common signaling network 330 to perform a call exchange. A Home Location Register (HLR) 360 is connected to a base station controller to support a connection between a packet data service node (PDSN) 370, a packet data service node 370 and the Internet 40 to provide a packet data service to a subscriber. It is configured to include a data core network (DCN, 380) for.

The switches 220 and 320 of the asynchronous mobile communication system 20 and the synchronous mobile communication system 30 are interconnected by No. 7 common signal networks 230 and 330, and the dual band dual mode mobile communication terminal 10 is provided. Information necessary for handover is transmitted and received. In addition, the home location registers 260 and 360 may be implemented as dual stack home location registers. The home location registers 260 and 360 may store and manage subscriber information, additional service usage, and the like, and provide subscriber information at the request of the exchange 220 or 320. .

When the RFID detector 50 detects a pilot signal transmitted from the dual band dual mode mobile communication terminal 10, the RFID frequency detector detects a command for a handover trigger. The dual band dual mode mobile communication terminal 10 transmits to the terminal 10 to perform a handover procedure from the asynchronous mobile communication system 20 to the synchronous mobile communication system 30.

2 is a view showing the configuration of a mobile communication terminal according to the present invention.

As shown, the dual-band dual mode mobile communication terminal 10 applied to the present invention includes an antenna 110, a diplexer 120, a module 130 for asynchronous mobile communication service, for a synchronous mobile communication service The module 140 includes an application processor 150, an RFID processor 160, and an RFID tag 170.

The antenna 110 may simultaneously process a frequency band for a synchronous mobile communication service and a frequency band for an asynchronous mobile communication service.

The diplexer 120 is configured to operate as a band pass filter for classifying and processing respective frequencies, and the asynchronous module 130 or the synchronization module transmits and receives frequencies from the dual band dual mode mobile communication terminal 10. Each of them is passed to 140.

The asynchronous module 130 includes an asynchronous wireless transceiver 131 for separating transmission and reception radio waves into a predetermined frequency band, an asynchronous modem unit 133 for processing a wireless section protocol with an asynchronous mobile communication system, and the asynchronous modem unit 133. A memory 135 connected to temporarily store information related to the asynchronous modem unit 133 and a memory temporarily connected to the asynchronous modem unit 133 and the application processor 150 to store and transmit information. And a dual port RAM (DPRAM) 137 that stores state (for example, ON, OFF, LPM) information, command information for performing an operation, information that needs to be transmitted and received with each other, and the like.

The synchronization module 140 includes a synchronous wireless transceiver 141 for separating transmission and reception radio waves into a predetermined frequency band, a synchronous modem unit 143 for processing a wireless section protocol with a synchronous mobile communication system, and the synchronous modem unit 143. A memory unit 145 connected to temporarily store information related to the synchronous modem unit 143 and a memory unit temporarily storing information transmitted and received by being connected to the synchronous modem unit 143 and the application processor 150. And a dual port RAM (DPRAM) 147 that stores state (for example, ON, OFF, LPM) information, command information for performing an operation, information to be transmitted and received with each other, and the like.

The application processor 150 operates as a central processing unit for controlling the asynchronous modem unit 133 and the synchronous modem unit 143, performs a multimedia function, and temporarily stores information required for the application processor 150 to operate. Memory 152 to be included.

The RFID tag 170 transmits a pilot signal at predetermined intervals, and receives the handover command signal as the RFID detector 50 detects the pilot signal and transmits a handover command signal. This is transmitted to the RFID processor 160.

When the RFID processor 160 receives the handover command signal transmitted from the RFID tag 170, the RFID processor 160 transmits the handover command signal to the asynchronous modem unit 133 to handover from the asynchronous mobile communication system 20 to the synchronous mobile communication system 30. To perform.

In addition, the dual-band dual-mode mobile communication terminal 10 is equipped with software for the user interface, additional services, mobility management, access / session control, resource control, protocol processing, so that users can use a variety of application services Handover is performed and protocol conversion is performed according to the mobile communication system.

The dual-band dual mode mobile communication terminal described above is capable of transmitting and receiving signals to and from a terminal capable of receiving a signal of the synchronous mobile communication system while using a service of the asynchronous mobile communication system and a synchronous mobile communication system while using a service of the asynchronous mobile communication system. A terminal capable of transmitting and receiving signals with a synchronous mobile communication system while using a service of an asynchronous mobile communication system will be described as an example. In the case of a mobile communication terminal capable of transmitting and receiving signals to and from a synchronous mobile communication system while using a service of an asynchronous mobile communication system, a device configuration such as the diplexer 120 becomes somewhat more complicated than a mobile communication terminal capable of receiving a signal, Designed to take into account impacts.

3 is a view showing the configuration of the RFID detection apparatus according to the present invention.

As shown, the RFID detector 50 includes an antenna 510, a diplexer 520, an RF transmitter 530, an RF receiver 540, and a main processor 550.

In more detail, the antenna 510 receives a pilot signal transmitted from the RFID tag 170 of the mobile communication terminal 10 and transmits and receives a signal with the mobile communication terminal 10, such as transmitting a handover command signal. The diplexer 520 distinguishes and processes each frequency transmitted and received from the antenna 510.

The RF receiver 540 receives a pilot signal transmitted from the RFID tag 170 of the dual band dual mode mobile communication terminal 10 and transmits it to the main processor 550, and the RF transmitter 530 is the main processor 550. When receiving the handover command signal transmitted from the), it is transmitted to the antenna 510 to transmit to the RFID tag 170 of the mobile communication terminal 10.

When the main processor 550 receives the pilot signal from the RF receiver 540, the dual band dual mode mobile communication terminal 10 is handed over to the synchronous mobile communication system 30 in which the RFID detector 50 is installed. It senses that it has entered the required area (for example, the area where the radio wave strength from the asynchronous mobile communication system 20 is weak, such as a building), and transmits a handover command message to the RF transmitter 530.

4 is a flowchart illustrating an embodiment of a handover method according to the present invention, in which a dual band dual mode mobile communication terminal 10 communicates with an asynchronous mobile communication system 20 in an asynchronous mobile communication service area. An example of a case where the signal from the asynchronous mobile communication system 20 moves to a region where the signal strength is weak will be described.

When a predetermined period arrives (S101), the RFID tag 170 of the dual band dual mode mobile communication terminal 10 transmits a pilot signal (S103).

If the predetermined period does not arrive at step S101, the RFID tag 170 of the dual band dual mode mobile communication terminal 10 repeats the process of step S101.

Thereafter, the dual band dual mode mobile communication terminal 10 moves to a region where the signal strength of the asynchronous mobile communication system 20 in the region where the asynchronous mobile communication system 20 and the synchronous mobile communication system 30 overlap is weak. Accordingly, the RFID detector 50 provided in an area (eg, a building, a basement, etc.) in which the signal strength of the asynchronous mobile communication system 20 is weak detects a pilot signal transmitted from the RFID tag 170. (S105).

Subsequently, the RFID detecting apparatus 50 detects that the dual band dual mode mobile communication terminal 10 requiring handover to the synchronous mobile communication system 30 has entered the area through the pilot signal received in step S105. The handover command message is transmitted to the dual band dual mode mobile communication terminal 10 (S107).

When the RFID tag 170 of the dual band dual mode mobile communication terminal 10 receives a handover command message transmitted from the RFID detector 50 (S109), it transmits it to the RFID processor 160.

The RFID processor 160 transmits the handover command message received from the RFID tag 170 to the asynchronous modem unit 133 to perform handover from the asynchronous mobile communication system 20 to the synchronous mobile communication system 30. do.

The asynchronous modem unit 133 transmits and receives a signal with the synchronous modem unit 143 according to the handover command message received from the RFID processor 160, and performs a handover procedure (S111).

Here, the handover procedure between the asynchronous mobile communication system 20 and the synchronous mobile communication system 30 may be performed by any one or more handover methods.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, the handover method from the asynchronous network to the synchronous network using the RFID according to the present invention, and the mobile communication terminal and the RFID detecting apparatus for the same, move the mobile communication terminal to an area where the signal strength of the asynchronous mobile communication system is weak, such as a building. In this case, since a signal is transmitted to perform a handover to the synchronous mobile communication system, there is an advantage that the handover can be performed to the synchronous mobile communication system without restriction on performing the handover for each cell unit.

In addition, since the mobile terminal user can communicate with the synchronous mobile communication system in a place where communication with the asynchronous mobile communication system is not smooth, such as a building, it is possible to receive a high quality service without a service disconnection phenomenon. There is this.

Claims (5)

A dual band dual mode mobile communication terminal performing communication with an asynchronous mobile communication system on a communication network in which an asynchronous mobile communication system and a synchronous mobile communication system overlap is handed over to a synchronous mobile communication system according to a signal transmitted from an RFID detector. As a handover method from asynchronous network to synchronous network using RFID, The dual band dual mode mobile communication terminal includes an asynchronous modem unit, a synchronous modem unit, an RFID tag and an RFID processor for transmitting a pilot signal every predetermined period, A first step of transmitting a pilot signal when a predetermined period of the RFID tag of the dual band dual mode mobile communication terminal arrives; When the RFID detection device detects a pilot signal transmitted from the dual band dual mode mobile communication terminal and transmits a handover command signal, an RFID tag of the dual band dual mode mobile communication terminal is transmitted from the RFID detection device. A second step of receiving a handover command signal; And A third step of performing a handover procedure from the asynchronous mobile communication system to the synchronous mobile communication system according to the handover command signal received in the second step; Handover method to asynchronous network to asynchronous network using RFID, comprising a. The method of claim 1, The third step, Receiving, by the RFID processor, a handover command signal transmitted from the RFID tag, and transmitting the handover command signal to the asynchronous modem unit; And The asynchronous modem unit communicating with the synchronous modem unit according to the handover command signal and performing a handover procedure; Handover method to asynchronous network to asynchronous network using RFID, comprising a. It is selectively connected to an asynchronous mobile communication system and a synchronous mobile communication system, including an asynchronous modem unit for communicating with an asynchronous mobile communication system and a synchronous modem unit for communicating with a synchronous mobile communication system. A dual band dual mode mobile communication terminal for performing a handover to a synchronous mobile communication system according to a signal transmitted from an RFID detector on a communication network in which a system is overlapped. An RFID tag which transmits a pilot signal at predetermined periods and receives a handover command signal transmitted from the RFID detection device; And As the RFID detection device detects a pilot signal transmitted from the RFID tag and transmits a handover command signal, when the RFID detection device receives a handover command signal transmitted from the RFID tag, the RFID detection device transmits the handover command signal to the asynchronous modem unit to transmit the handover command signal. An RFID processor for performing handover from the system to the synchronous mobile communication system; Dual band dual mode mobile communication terminal comprising a. An RFID detecting apparatus for transmitting and receiving a signal to and from a mobile communication terminal selectively connected to an asynchronous mobile communication system and a synchronous mobile communication system, wherein the mobile communication terminal performs a handover to a synchronous mobile communication system. Includes an RFID tag that transmits a pilot signal every set period, Upon receiving the pilot signal transmitted from the RFID tag of the mobile communication terminal, a handover command signal for detecting that the mobile communication terminal to be handed over to the synchronous mobile communication system has entered the area and handing over to the synchronous mobile communication system. RFID detection apparatus for transmitting to the mobile communication terminal. The method of claim 4, wherein The RFID detection device, An antenna for transmitting and receiving a signal to and from the mobile communication terminal; A diplexer for distinguishing and processing respective frequencies transmitted and received from the antenna; An RF receiver for receiving a pilot signal transmitted from the RFID tag of the mobile communication terminal; A main processor for detecting that the mobile communication terminal has entered a region requiring handover to a synchronous mobile communication system when receiving a pilot signal from the RF receiver, and transmitting a handover command message; And An RF transmitter for transmitting the handover command message transmitted from the main processor to the antenna by transmitting the handover command message to the antenna; RFID detection apparatus comprising a.

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