Network interworking system and method for providing seamless voice service and short message service betweem wireless communication system

Abstract

A network interworking system is provided for connecting a voice call between a mobile terminal in a wireless packet network and a mobile terminal in a mobile communication network. A home location register (HLR) registers therein location information of terminals and a subscriber profile. An access point controller (APC) converts data between the mobile communication network and the wireless packet network upon receipt of an origination message including a terminal identifier of a called terminal, and transmits a call connection request to the called terminal. A mobile switching center (MSC) detects a location of the called terminal through the HLR upon receipt of the call connection request from the APC, and transmits a paging message to the detected location of the called terminal. A base station system (BSS) transmits the paging message from the MSC in the mobile communication network to the called terminal.

Description

technical field [0001] The present invention generally relates to network interworking systems and methods for providing wireless communication services between heterogeneous / homogeneous networks. Specifically, the present invention relates to a network interworking system and method for providing seamless voice service and Short Message Service (SMS) service between heterogeneous / homogeneous networks. Background technique [0002] Mobile communication networks providing conventional circuit-switched voice services are classified into Frequency Division Multiple Access (FDMA) networks, Time Division Multiple Access (TDMA) networks, and Code Division Multiple Access (CDMA) networks according to their communication methods. In the FDMA network, a predetermined frequency band is divided into a plurality of frequency channels, and the channels are allocated to subscribers independently. In a TDMA network, multiple subscribers time-share a channel. In a CDMA network, multiple s...

AI Technical Summary

Problems solved by technology

Even though it is preferable to use the general packet service to deliver the subscriber's SMS message to the called terminal, it is difficult to provide an SMS service similar to that used in mobile communication networks when the called terminal cannot receive a call (for example, because it is turned off). redelivery service

[0007] Even though it is assumed for the purpose of illustration that SMS service is possible in the wireless packet network, since the SMS service in the mobile communication network and the SMS service in the wireless packet network are provided through heterogeneous networks, it is difficult to provide the SMS service in the wireless packet network. Receiving SMS messages from a mobile communication network, or receiving SMS messages from a wireless packet network in a mobile communication network

Therefore, in a wireless communication system where both a mobile communication network and a wireless packet network exist, it is difficult to provide a stable SMS service to service subscribers

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