Method for establishing an atm traffic channel path between a bsc and a bts in an ev-do system
The present invention generally relates to a method for establishing an asynchronous transfer mode (ATM) traffic channel path between a SF block of a base station controller (BSC) and a channel card block (HCCA) of a base transceiver station (BTS). More particularly, the present invention is directed to a method for establishing an ATM traffic channel path between the SF block of the BSC and the channel card block of the BTS and exchanging information on such established path necessary for establishing such path, wherein the blocks have been designed and implemented in the course of commercializing ATM communication network based on an evolution-data only (EV-DO) system of Qualcomm. The present invention modifies a conventional message between the BSC and BTS, conceives a new message between them while reflecting the conventional message and provides an additional way of exchanging information on the ATM path. In this way, the present invention can be used for establishing the ATM path between the BSC and BTS in the telecommunication network based on the ATM. In summary, the present invention provides a method of establishing the ATM traffic channel path between the BSC and the BTS in the EV-DO system, which requires minimal changes to the system when a network basis is changed from the IP to the ATM.
1 . A method for establishing an ATM traffic path between a BSC and a BTS in an EV-DO system, the method comprising the steps of:
requesting traffic channel allocation from a SF block to a channel card block when information on an ATM path of the BTS is extracted and the ATM path is fixed in the channel card block;
requesting setup of an ATM switch block to an OHM block when a response to the request for the traffic channel allocation is received;
establishing a transmission message between the OHM block and the ATM switch block, and modifying an OHM database when the setup is accepted;
at the SF block, calling an ATM path extraction function and an ATM path establishing function based on channel card information when taskSpawn SFBlink is executed at the OHM block after the database is modified; and
at the OHM block, transmitting a response to the request for the ATM switch block setup when the ATM path extraction function and the ATM path establishing function are called.