KR20040000038A - Processing method for hard-handoff of mobile telecommunication system - Google Patents

Processing method for hard-handoff of mobile telecommunication system Download PDF

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Publication number
KR20040000038A
KR20040000038A KR1020020034411A KR20020034411A KR20040000038A KR 20040000038 A KR20040000038 A KR 20040000038A KR 1020020034411 A KR1020020034411 A KR 1020020034411A KR 20020034411 A KR20020034411 A KR 20020034411A KR 20040000038 A KR20040000038 A KR 20040000038A
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terminal
mobile communication
communication system
service
hard handoff
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KR1020020034411A
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Korean (ko)
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이성영
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엘지전자 주식회사
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Publication of KR20040000038A publication Critical patent/KR20040000038A/en

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    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C17/00—Other devices for processing meat or bones
    • A22C17/0006—Cutting or shaping meat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G31/00—Mechanical throwing machines for articles or solid materials
    • B65G31/02—Mechanical throwing machines for articles or solid materials comprising belts

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: A method for processing hard handoff of a mobile communication system is provided to execute a 2G mobile communication service until a call is terminated when a terminal is busy, and to perform hard handoff by confirming whether the terminal is located in an overlay region, thereby automatically receiving a 3G system service. CONSTITUTION: A terminal moves to a region where a service of a 3G mobile communication system is executed(S1). If the terminal moves to the region in an idle state(S2), the terminal periodically registers self positions in the idle state(S2,S3). A 2G mobile communication system knows that a current IMT-2000 terminal exists in a 2G/3G overlay region(S4). A 2G network transmits information showing that the IMT-2000 terminal is located in a 3G cell to the terminal, and the corresponding terminal converts a current communication mode into a 3G mobile communication mode, and performs hard handoff(S5,S6).

Description

이동통신 시스템의 하드 핸드오프 처리 방법{PROCESSING METHOD FOR HARD-HANDOFF OF MOBILE TELECOMMUNICATION SYSTEM}PROCESSING METHOD FOR HARD-HANDOFF OF MOBILE TELECOMMUNICATION SYSTEM}

본 발명은 이동통신 시스템에서 단말기가 하드 핸드오프(Hard Hand off)를 수행하는 기술에 관한 것으로, 특히 IMT-2000 서비스를 지원하는 단말기를 보유하고 있는 가입자가 3세대 이동통신 시스템 영역으로 진입하는 경우 자동으로 3세대 이동통신 시스템의 서비스를 받을 수 있도록 한 이동통신 시스템의 하드 핸드오프 처리 방법에 관한 것이다.The present invention relates to a technology in which a terminal performs a hard hand off in a mobile communication system. In particular, when a subscriber having a terminal supporting an IMT-2000 service enters a third generation mobile communication system area The present invention relates to a method for processing hard handoff in a mobile communication system to automatically receive a service of a third generation mobile communication system.

3세대 이동통신(IMT-2000)시스템 분야의 이동통신 서비스는 초기에 막대한 투자비용이 요구되므로 지역적인 시스템(island system)으로 서비스할 것으로 전망된다.Mobile communication services in the field of 3G mobile communication (IMT-2000) systems are expected to be serviced by regional systems because they require huge investment costs.

그럼에도 불구하고 종래의 이동통신 시스템에 있어서는 적절한 핸드오프 기술이 구비되어 있지 않았다. 따라서, IMT-2000 가입자가 IMT-2000 시스템이 존재하지 않는 지역으로 이동할 경우 원할하게 이동 통신 서비스를 받을 수 없는 결함이 있었다.Nevertheless, there is no proper handoff technique in the conventional mobile communication system. Therefore, when the IMT-2000 subscriber moves to an area where the IMT-2000 system does not exist, there is a defect in that the mobile communication service cannot be smoothly received.

따라서, 본 발명의 목적은 IMT-2000 서비스를 지원하는 단말기를 보유하고 있는 가입자가 3세대 이동통신 서비스 지역으로 이동할 때 자동으로 3세대 이동통신 시스템의 서비스를 받을 수 있도록 하드 핸드오프하는 이동통신 시스템의 하드 핸드오프 처리 방법을 제공함에 있다.Accordingly, an object of the present invention is a mobile communication system for hard handing off a subscriber having a terminal supporting IMT-2000 service to automatically receive service of a third generation mobile communication system when moving to a third generation mobile communication service area. To provide a hard handoff processing method of.

도 1은 본 발명에서 오버레이 셀의 구조를 나타낸 설명도.1 is an explanatory diagram showing the structure of an overlay cell in the present invention.

도 2는 본 발명에 의한 하드 핸드오프 처리 방법을 나타낸 신호 흐름도.2 is a signal flow diagram illustrating a hard handoff processing method according to the present invention.

***도면의 주요 부분에 대한 부호의 설명****** Description of the symbols for the main parts of the drawings ***

1 : 2G 셀2 : 3G 셀1: 2G cell 2: 3G cell

3 : 오버레이셀3: overlay cell

본 발명에 의한 이동통신 시스템의 하드 핸드오프 처리 방법은, 단말기가 2G 셀에서 3G 셀로 이동될 때 그 단말기가 아이들 상태인지 통화중인 상태인지 확인하는 제1과정과; 상기 단말기가 아이들 상태인 경우 오버레이 영역에 위치한 것인지 확인하여 그 확인 결과에 따라 하드 핸드오프를 수행하는 제2과정과; 상기 단말기가 통화중인 경우 호를 종료할 때까지 2G 이동통신 서비스를 실시한 후 오버레이 영역에 위치한 것인지 확인하여 그 확인 결과에 따라 하드 핸드오프를 수행하는 제3과정으로 이루어지는 것으로, 이와 같이 이루어진 본 발명의 하드 핸드오프 처리 방법을 첨부한 도 1 및 도 2를 참조하여 상세히 설명하면 다음과 같다.A hard handoff processing method of a mobile communication system according to the present invention includes a first step of checking whether a terminal is in an idle state or a busy state when the terminal is moved from a 2G cell to a 3G cell; A second process of checking whether the terminal is located in an overlay area when the terminal is in an idle state and performing a hard handoff according to a result of the checking; In the case where the terminal is busy, it performs a 2G mobile communication service until the call is terminated, and then checks whether the terminal is located in the overlay area, and performs a hard handoff according to the result of the check. Hereinafter, the hard handoff processing method will be described in detail with reference to FIGS. 1 and 2.

예를 들어, 2세대 이동통신 시스템은 전국 모든 지역을 서비스할 수 있도록 설치되어 있고, 3세대 이동통신 시스템은 일부 지역에서만 서비스할 수 있도록 설치되어 있는 경우의 하드 핸드오프 처리 방법을 설명하면 다음과 같다. 도 1은 이와 같은 경우 오버레이 셀(overlay cell)의 구조를 나타낸 것이다.For example, when the second generation mobile communication system is installed to serve all regions of the country, and the third generation mobile communication system is installed to serve only a few regions, the hard handoff processing method will be described as follows. same. 1 illustrates the structure of an overlay cell in this case.

사용자가 IMT-2000 단말기를 휴대하고 2세대(2G) 이동통신 시스템의 서비스가 실시되는 지역에서 3세대(3G) 이동통신 시스템의 서비스가 실시되는 지역으로 이동하는 경우, 자동으로 3G 이동통신 시스템의 서비스를 받을 수 있도록 단말기의 모드를 자동 절환하게 된다. 이와 같은 경우, 단말기는 아이들(idle) 상태에서 3G 이동통신 시스템의 서비스가 실시되는 지역으로 이동하거나, 통화중인 상태에서 3G 이동통신 시스템의 서비스가 실시되는 지역으로 이동하게 된다.(S1)When a user carries an IMT-2000 terminal and moves from a region where a service of a 2nd generation (2G) mobile communication system is performed to a region where a service of a 3rd generation (3G) mobile communication system is performed, the 3G mobile communication system automatically The mode of the terminal is automatically switched to receive the service. In this case, the terminal moves to an area where the service of the 3G mobile communication system is performed in the idle state, or moves to an area where the service of the 3G mobile communication system is performed while in a call state (S1).

상기와 같이 단말기가 아이들 상태에서 3G 이동통신 시스템의 서비스가 실시되는 지역으로 이동하는 경우, 그 단말기는 아이들 상태에서 자신의 위치를 주기적으로 등록하게 된다.(S2,S3)When the terminal moves to the area where the 3G mobile communication system is serviced in the idle state as described above, the terminal periodically registers its location in the idle state. (S2, S3)

예를 들어, 도 1에서와 같이 단말기가 2G 셀(1) 내의 A 위치에서 2G 셀(1)과 3G 셀(2)이 중첩되어 있는 오버레이 셀(3) 내의 B 위치로 이동되면, 2G 이동통신 시스템에서는 2G,3G 이동통신 시스템의 설치 정보 및 위치 등록결과를 근거로 현재 IMT-2000 단말기가 2G/3G 오버레이 영역에 존재함을 알 수 있게 된다.(S4)For example, as shown in FIG. 1, when the terminal is moved from the A position in the 2G cell 1 to the B position in the overlay cell 3 in which the 2G cell 1 and the 3G cell 2 overlap, the 2G mobile communication In the system, it is possible to know that the IMT-2000 terminal exists in the 2G / 3G overlay area based on the installation information and the location registration result of the 2G and 3G mobile communication systems (S4).

이때, 2G 네트워크에서는 해당 단말기가 현재 3G 셀(2)에 위치하고 있다는 사실을 알리기 위한 정보를 신호망을 통해 그 단말기에 전송하게 되고, 이 정보를 수신한 해당 단말기는 현재의 통신 모드를 2G 이동 통신모드에서 3G 이동 통신모드로 절환하여 하드 핸드오프를 수행하게 된다. 즉, 상기 단말기는 3G 이동통신 시스템의 파일럿 신호를 수신하여 3G 이동통신 시스템에 등록하게 된다.(S5,S6)In this case, the 2G network transmits information for notifying that the terminal is currently located in the 3G cell 2 to the terminal through a signal network, and the terminal receiving the information transmits the current communication mode to the 2G mobile communication. Mode to 3G mobile communication mode to perform hard handoff. That is, the terminal receives the pilot signal of the 3G mobile communication system and registers with the 3G mobile communication system. (S5, S6)

한편, 단말기가 통화중인 상태에서 2G 이동통신 시스템의 서비스가 실시되는 2G 셀(1)의 위치에서 3G 이동통신 시스템의 서비스가 실시되는 3G 셀(2)의 위치로 이동하는 경우, 그 단말기는 호를 종료할 때까지 계속 2G 이동통신 시스템을 사용하도록 한다. 이와 같이 하는 이유는 통화 단절이 발생되는 것을 방지하기 위함이다.(S7)On the other hand, when the terminal is in a call and moves from the position of the 2G cell 1 where the service of the 2G mobile communication system is performed to the position of the 3G cell 2 where the service of the 3G mobile communication system is performed, the terminal calls the call. Continue to use the 2G mobile communication system until it terminates. The reason for doing this is to prevent a call disconnection from occurring (S7).

그러나, 일단 호가 종료되면 2G 이동통신 시스템에서는 신호망을 통해 상기 단말기에게 현재 3G 이동통신 시스템의 영역에 위치하고 있다는 사실을 알리기 위한 정보를 전송하게 된다. 이 정보를 수신한 단말기는 2G 이동 통신모드에서 3G 이동 통신모드로 절환하여 하드 핸드오프가 완료된다.(S8,S9)However, once the call is terminated, the 2G mobile communication system transmits information for notifying the terminal that it is currently located in the area of the 3G mobile communication system through a signal network. Upon receiving this information, the terminal switches from the 2G mobile communication mode to the 3G mobile communication mode to complete the hard handoff. (S8, S9)

이를 위해 2G 이동통신 네트워크는 2G 셀(1) 중에서 3G 셀(2)과 오버레이 구조를 갖고 있는 셀의 정보를 갖고 있어야 한다. 즉, 3G 이동통신 시스템의 서비스를 위해서는 2G 이동통신 시스템의 사업자의 협조가 필요하다.To this end, the 2G mobile communication network should have information of a cell having an overlay structure with the 3G cell 2 among the 2G cells 1. That is, for the service of the 3G mobile communication system, cooperation of the operator of the 2G mobile communication system is required.

상기에서는 단말기가 2G 이동통신 시스템의 서비스 지역에서 3G 이동통신 시스템의 서비스 지역으로 이동하는 경우에 대한 하드 핸드오프 과정을 예로 하여 설명하였으나, 반대 방향으로 이동되는 경우에도 동일한 방법으로 핸드 오프된다.In the above description, a hard handoff process for the case where the terminal moves from the service area of the 2G mobile communication system to the service area of the 3G mobile communication system has been described as an example. However, the terminal is handed off in the same manner.

이상에서 상세히 설명한 바와 같이 본 발명은 IMT-2000 서비스를 지원하는 단말기를 보유하고 있는 가입자가 3세대 이동통신 서비스 지역으로 이동할 때 자동으로 3세대 이동통신 시스템의 서비스를 받을 수 있도록 하드 핸드오프하는 이동통신 시스템의 하드 핸드오프 처리 함으로써, 사용자에게 사용상의 편리함을 제공할 수 있는 효과가 있다.As described in detail above, the present invention provides a mobile hand-off that enables a subscriber having a terminal supporting IMT-2000 service to automatically receive service of a third generation mobile communication system when moving to a third generation mobile communication service area. By hard handoff processing of the communication system, there is an effect that can provide convenience for the user.

Claims (2)

단말기가 2G 셀에서 3G 셀로 이동될 때 그 단말기의 상태를 확인하는 제1과정과; 상기 단말기가 아이들 상태인 경우 오버레이 영역에 위치한 것인지 확인하여 그 확인 결과에 따라 하드 핸드오프를 수행하는 제2과정과; 상기 단말기가 통화중인 경우 호를 종료할 때까지 2G 이동통신 서비스를 실시한 후 오버레이 영역에 위치한 것인지 확인하여 그 확인 결과에 따라 하드 핸드오프를 수행하는 제3과정으로 이루어지는 것을 특징으로 하는 이동통신 시스템의 하드 핸드오프 처리 방법.Checking a state of the terminal when the terminal is moved from the 2G cell to the 3G cell; A second process of checking whether the terminal is located in an overlay area when the terminal is in an idle state and performing a hard handoff according to a result of the checking; If the terminal is busy, the mobile communication system comprising a third process of performing a 2G mobile communication service until the end of the call and confirming that the terminal is located in the overlay area and performing a hard handoff according to the result of the confirmation. How to handle hard handoff. 제1항에 있어서, 상기 하드 핸드오프를 위해 2G 이동통신 네트워크가 2G 셀 중에서 3G 셀과 오버레이 구조를 갖고 있는 셀의 정보를 보유하는 것을 특징으로 하는 이동통신 시스템의 하드 핸드오프 처리 방법.The method of claim 1, wherein the 2G mobile communication network retains information of a cell having an overlay structure with a 3G cell among 2G cells for the hard handoff.
KR1020020034411A 2002-06-19 2002-06-19 Processing method for hard-handoff of mobile telecommunication system KR20040000038A (en)

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US20020037726A1 (en) * 1998-12-02 2002-03-28 Stanislaw Czaja Forward link inter-generation soft handoff between 2g and 3g cdma systems
KR20020014440A (en) * 2000-08-18 2002-02-25 송문섭 Method for handover from 3G communication system to 2G communication system
KR20030057980A (en) * 2001-12-29 2003-07-07 에스케이 텔레콤주식회사 Method for Handover between Generations in Wireless Communication System
KR20030064263A (en) * 2002-01-23 2003-07-31 삼성전자주식회사 Method for performing handover between systems in mobile telecommunication system

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