KR19990079648A - Call Processing Method of APM System at Home Location Register in CDM Mobile Communication System - Google Patents

Abstract

The present invention provides the IS-41.A protocol specification for the originating / receiving AMPS exchange by setting different values for the originating AMPS exchange and the destination AMPS exchange when interworking with the AMPS system in the HLR in the CDMA mobile communication system. The present invention relates to a call processing method of an AMPS system in an HLR in a CDMA mobile communication system which operates according to the present invention and transmits / receives a call processing message during an exchange of an HLR and an AMPS in a CDMA mobile communication system. When the system interworks, it receives the incoming information request from the originating exchange in the call processing block of the HLR in the CDMA mobile communication system, retrieves the location information of the called subscriber, checks the system type information of the called exchange and the called exchange according to the search result, If the destination exchange is the same AMPS exchange as the originating exchange through the system type information of this confirmed destination exchange, After setting a different value from the originating exchange for the new exchange, requesting routing information to the destination exchange and sending a response to the originating exchange to perform message transmission / reception during the outgoing / incoming exchange period. Thus, by setting different values for the originating / receiving AMPS exchange in the HLR in the CDMA mobile communication system interworking with the AMPS system, the originating / receiving AMPS exchange operates according to the IS-41.A standard so that normal call processing service can be performed. There is an effect that can be achieved.

Description

Call Processing Method of APM System at Home Location Register in CDM Mobile Communication System

The present invention relates to an APM in a Home Location Register (HLR) in a mobile communication system using a Code Division Multiple Access (CDMA) method. Phone Service; hereinafter referred to as 'AMPS') When interworking with the system, the caller / recipient AMPS exchanger operates according to the IS-41.A protocol specification by setting different values for the calling and receiving AMPS exchangers. The present invention relates to a call processing method of an AMPS system in an HLR in a CDMA mobile communication system, which enables a call processing message to be transmitted / received during an AMPS exchange with an HLR in a CDMA mobile communication system.

In general, a mobile communication network provides various mobile communication services to subscribers by interworking a digital communication system using a CDMA method and an AMPS system, which is an analog mobile communication system using a frequency division multiple access (FDMA) method. have.

Meanwhile, the CDMA mobile communication system adopts the IS-41.B protocol standard and the AMPS system adopts different protocol standards as the IS-41.A protocol standard. A function block for converting is provided to link the CDMA mobile communication system with the AMPS system.

However, since the AMPS exchanger performs a separate internal protocol for the same system type without performing a function of the IS-41.A standard, there is a problem that the AMLR exchange cannot process even if a normal IS-41.A standard message is provided. .

In other words, when the CDMA mobile communication system and the AMPS system are interworked, if both the source exchange system and the destination exchange system are AMPS exchange systems, the IS-41.A in the HLR in the CDMA mobile communication system is performed by performing the internal protocol with the same system type. Since the message according to the standard cannot be processed, the subscriber cannot provide the correct call processing service.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to set different values for the originating / receiving AMPS exchanger in the call processing block of the HLR in the CDMA mobile communication system when the CDMA mobile communication system and the AMPS system are interworked. By making the incoming / outgoing AMPS exchanger operate according to IS-41.A protocol specification, and thus providing call processing service to subscribers by sending / receiving call processing message during HLR and AMPS exchange period in CDMA mobile communication system. An object of the present invention is to provide a call processing method of an AMPS system in an HLR in a CDMA mobile communication system.

1 is a block diagram illustrating a call processing method of an APS system in a home location register in a CDA mobile communication system according to the present invention;

2 is a flowchart illustrating a call processing method of an APS system in a home location register in a CDA mobile communication system according to the present invention;

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

1: outgoing exchange 2: HLR

3: incoming exchange

The call processing method of the AMPS system in the HLR in the CDMA mobile communication system of the present invention for achieving the above object is the call from the originating exchange in the call processing block of the HLR in the CDMA mobile communication system when the CDMA mobile communication system and the AMPS system is interworked. Receives a request for information, retrieves the location information of the called subscriber, checks the system type information of the destination exchange and the destination exchange according to the search result, and through the system type information of the confirmed destination exchange, the destination exchange is identical to the originating exchange. If the AMPS exchange is set to a value different from the originating exchange for the terminating exchange, it requests routing information to the terminating exchange and sends a response to the originating exchange to perform message sending / receiving during the originating / receiving exchange period. It features.

Hereinafter, a call processing method of an AMPS system in an HLR in a CDMA mobile communication system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram for performing a call processing method of an AMPS system in an HLR in a CDMA mobile communication system according to the present invention, wherein the HLR (2) in the CDMA mobile communication system when the CDMA mobile communication system and the AMPS system interoperate. The upper call processing block (not shown) of) receives the request for the incoming information from the originating exchange 1, retrieves the location information of the called subscriber, and according to the search result of the called exchange 3 and the destination exchange 3, Check the system type information, and if the incoming exchange 3 is the same AMPS exchange as the outgoing exchange 1 through the confirmed system type information of the incoming exchange 3, the outgoing exchange 1 After setting to a different value from), request routing information to the destination exchange (3) and transmit a response to the originating exchange (1) to perform a call processing service between the originating / destination exchange (1) (3) .

When the CDMA mobile communication system and the AMPS system operate in the above-described configuration, a method for interworking call processing in the HLR 2 in the CDMA mobile communication system will be described with reference to the flowchart of FIG. 2.

First, the call processing block in the HLR 2 receives the incoming information request from the originating exchange 1 which is the AMPS exchange (S1) and retrieves the location information on the current location of the called subscriber (S2).

Subsequently, the destination exchanger 2 is checked according to the location information on the called subscriber found in step S2, and the system type information of the destination exchanger 2 is also verified (S3).

The call processing block of the HLR 2 then determines whether the destination exchange 3 is the same AMPS exchange as the originating exchange 1 from the system type information of the destination exchange 3 identified in step S3. (S4).

If the terminating exchange 3 is the same AMPS exchange as the originating exchange 1 in the step S4, the terminating exchange 3 is set to a value different from the originating exchange 1 (S5).

On the other hand, if the destination exchange 3 is not an AMPS exchange in step S4, the system type information specified in the HLR is set as it is (S6).

Subsequently, the call processing block in the HLR 2 requests routing information from the destination exchange 3 (S7), receives the response, and transmits it to the originating exchange 1 (S8) to transmit / receive a call processing message. (S9) Normal call processing service is performed.

As described above, the present invention sets the different values for the originating / incoming AMPS exchange in the HLR in the CDMA mobile communication system interworking with the AMPS system, so that the originating / incoming AMPS exchange is in accordance with the IS-41.A standard. In operation, there is an effect that a normal call processing service can be achieved.

Claims (1)

A first step of retrieving the location information on the current location of the called subscriber by receiving the incoming information request from the originating exchange, which is an AMPS exchange, at the HLR when the CDMA mobile communication system and the AMPS system are interworked; A second step of confirming system type information of the destination exchange and the destination exchange according to the information, and a third step of determining whether the destination exchange is the same AMPS exchange as the originating exchange from the system type information of the destination exchange identified in the second step; Step 4, in the third step, if the destination exchange is an AMPS exchange, setting the destination exchange to a value different from the originating exchange; otherwise, setting the system type information specified in the HLR as it is; After the step, the routing information is requested to the destination exchange and the response is sent to the originating exchange. The PS-M-call processing method (AMPS) system in CD M. A. (CDMA) mobile communication system within the home location register (HLR) which comprises a call processing message to the fifth step of transmitting / receiving.