KR100225525B1 - Method for hand-off among the other switching systems - Google Patents

Abstract

The present invention relates to a handover between heterogeneous exchanges suitable for handoff processing when a personal mobile subscriber in a code division multi-access (CDMA) exchange moves from a busy state to a region controlled by a heterogeneous exchange. The present invention relates to an off-processing method. In the related art, a database having information on packing or unpacking is added to an exchange of an initially serving exchange or a serviced exchange to retrieve and pack or unpack it. There is a drawback that the information of the exchange is increased due to the need for a procedure of switching the correct information, and the cost is increased, and the information of the database is increased. However, in the present invention, the personal mobile subscriber is controlled by a heterogeneous exchange during the call. Heterogeneous exchange period compatible statement when moving Prevent the disconnection due to the service, by continuous service even when the hand-off to the heterogeneous exchange period, it can improve in the above-mentioned drawbacks.

Description

How to handle handoffs between heterogeneous exchanges

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing handoff between heterogeneous exchanges, and more particularly, in a code division multi-access (CDMA) exchange, a heterogeneous exchange is performed when a personal mobile subscriber is handed off in a busy state. The present invention relates to a handoff processing method between heterogeneous exchanges that performs handoff processing when moving to a controlled area.

In the prior art, a method of packing information on radio resources in an initially serving exchange according to an unpacking scheme of a heterogeneous exchange and an exchange that was initially serving when receiving a handoff request message from a target exchange. There is a way to unpack according to the packing method.

However, in the prior art, a database having packing or unpacking information is added to one of the first or second serviced exchanges to search and pack or unpack it to switch information suitable for the corresponding exchange. The necessity of the procedure has the disadvantage that the information of the exchange is increased, the cost is increased, and the information of the database is increased.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a method for preventing service interruption and continuous service when a general subscriber moves to an area controlled by a heterogeneous exchange during a call.

In order to achieve the above object, the present invention is responsible for generating a facility command from the handoff information received from a plurality of base station controllers other than the first base station controller, matching with the first base station controller and operation management for the relay line, A serving exchange system for controlling mobile call processing and mobility management, and a heterogeneous target exchange system for receiving a data signal of a serving exchange, handoff processing, and transmitting handoff information to a corresponding second base station controller. Adding a BSSAP parameter field capable of carrying a handoff related BSSAP message on a map protocol of all exchanges; and controlling a heterogeneous target exchange controlled by a heterogeneous target exchange in a first base station controller controlled by a serving exchange. 2 Handoff to the base station controller area The right serving exchange sends a handoff notification to the heterogeneous target exchange, transmitting the map protocol information including the BSSAP parameter field on the map protocol at the heterogeneous target exchange, from the serving exchange to the heterogeneous target exchange, Retrieving the BSSAP parameter field information on the map protocol in the target exchange and transmitting it to the corresponding second base station controller; and other parameters are used only for matching the exchange periods, and heterogeneous types having received the map protocol in heterogeneous target exchanges. The target exchange of the UE transmits the data received from the serving exchange to the corresponding second base station controller controlled by the heterogeneous target exchange as it is, and the second base station controller uses heterogeneous exchange information by using the BSSAP forwarding parameter on the received map protocol. By receiving It provides a handoff processing method between different types of exchangers, characterized in that which comprises a step of performing a handoff for the ventilation.

1 is a mobile switching system suitable for handoff processing between heterogeneous exchanges according to the present invention;

2 is a flow chart illustrating the steps of handoff processing between heterogeneous exchanges according to the present invention;

<Description of the code | symbol about the principal part of drawing>

100 serving exchange 102 first base station controller

110: heterogeneous target exchange 112: second base station controller

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

The configuration of the present invention generates a facility command from the handoff information received from a plurality of base station controllers other than the first base station controller 102, is responsible for matching with the base station controller and operation management for the relay line, A switch 100 for controlling mobility management, and a heterogeneous target switch 110 for receiving a data signal of the switch 100 and handing-off it to transmit handoff information to the base station controller 112. .

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

Referring to FIG. 1, the serving exchange 100 is responsible for matching and relay management with a plurality of base station controllers belonging to the serving exchange 100 other than the first base station controller 102. Responsible for control of processing and movement management.

And, it controls the call transmitted / received from the own station and the other station, and if the call of the own station is received from the first base station controller 102 or if the called party is present in the exchange of the other station, it transmits to the exchange of the other station and controls the switching connection. Connect subscribers.

The serving exchange 100 receives the handoff request signal from the base station controller 102 to generate a map protocol.

When the serving exchange 100 transmits the map protocol to the heterogeneous target exchange 110, the serving exchange 100 adds and transmits a base station system application part (BSSAP) message on the map protocol. The heterogeneous target exchange 110 receiving the map protocol transmits the map protocol to the corresponding base station controller 112 which is handed off.

In the MAP protocol, information on the switching period circuit information, the switching period handoff number, and information on the target cell is transmitted.

The heterogeneous target exchange 110 separates only the BSSAP message separately from the map protocol.

The heterogeneous target exchange 110 transmits a BSSAP message to a corresponding base station controller 112 controlled by the heterogeneous exchange 110.

Referring to FIG. 2, a process of handoff processing between heterogeneous exchanges is described. When a mobile subscriber performs handoff between exchanges, the map protocol is used only for exchange period matching, and only a handoff-related BSSAP message performs a forwarding function.

Add a BSSAP parameter field that can carry the handoff related BSSAP message on the map protocol of all exchanges (step 202).

When the personal mobile communication terminal hands off from the first base station controller 102 controlled by the serving exchange to the area of the second base station controller 112 controlled by the heterogeneous target exchange 110, the serving exchange 100 is heterogeneous. A request to perform a handoff is sent to the target exchange 110 (step 204).

The map protocol information including the BSSAP parameter field on the map protocol at the heterogeneous target exchange 110 is transmitted from the serving exchange 100 to the heterogeneous target exchange 110 (step 206).

The BSSAP parameter field information on the map protocol in the heterogeneous target exchange 110 is searched for and transmitted to the corresponding second base station controller 112 (step 208).

The other parameters are used only for matching the exchange period, and in the heterogeneous target exchange 110 receiving the map protocol from the heterogeneous target exchange 110, the corresponding second base station controller controlled by the heterogeneous target exchange 110 In step 112, the data received from the serving exchange 100 is transmitted as it is (step 210).

The second base station controller 112 receives heterogeneous exchange information using the BSSAP forwarding parameter on the received map protocol and performs a handoff for the corresponding exchange (step 212).

In the base station control period handoff case and the exchange period handoff method, the information to be transmitted to the heterogeneous target exchange is transmitted to the second base station controller 112 using the exchange period map protocol. The MAP protocol receives the MAP protocol, receives the dual BSSAP message, and transmits the message to the first base station controller 102 for processing.

That is, in the code division multiple access exchange, the BSSAP field including the exchange information is added to the map protocol in the heterogeneous exchange period handoff process.

As described above, the present invention prevents the service disconnection due to the heterogeneous exchange period compatibility problem when the personal mobile subscriber moves to the area controlled by the heterogeneous exchange during the call, thereby continuing to service even when handoff is performed in the heterogeneous exchange period. There is.

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

Claims (1)

Switch that generates a facility command from the handoff information received from a plurality of base station controllers other than the first base station controller 102, manages matching with the base station controller and operation of the relay line, and controls mobile call processing and mobility management. And a heterogeneous target exchange 110 for receiving the data signal of the exchange 100 and handing off and transmitting the handoff information to the base station controller 112. , Adding a BSSAP parameter field capable of carrying a handoff related BSSAP message on the map protocol of all exchanges; The serving exchange 100 when the personal mobile communication terminal hands off from the first base station controller 102 controlled by the serving exchange to the area of the second base station controller 112 controlled by the heterogeneous target exchange 110. Reporting a handoff to the heterogeneous target exchange 110; Transmitting, from the serving exchange (100), the map protocol information including the BSSAP parameter field on the map protocol at the heterogeneous target exchange (110) to the heterogeneous target exchange (110); Transmitting BSSAP parameter field information on a map protocol at the heterogeneous target exchange (110) to the corresponding second base station controller (112); Transmitting data to the corresponding second base station controller 112 controlled by the heterogeneous target exchange 110 in the heterogeneous target exchange 110 having received the map protocol from the heterogeneous target exchange 110; The second base station controller 112 receives heterogeneous exchange data using a BSSAP transfer parameter on the received map protocol and performs a handoff for a corresponding exchange, wherein the handoff processing method between heterogeneous exchanges is performed. .

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