KR100429564B1 - Method for processing rf call in private wireless switching system - Google Patents

Abstract

The present invention relates to a call processing method for reducing traffic of a private wireless switching system caused by a wireless call. Based on the verified node information, we implement a method of directly connecting a radio call to a private side of a called party's private exchange.

Description

Wireless call processing in private wireless switching system {METHOD FOR PROCESSING RF CALL IN PRIVATE WIRELESS SWITCHING SYSTEM}

The present invention relates to a call processing method in a private radio switching system, and more particularly, to a call processing method for reducing traffic of a private radio switching system due to a radio call.

Today, with the development of the wireless communication industry, the use of wireless terminals is becoming common in private switching networks. As such, a private switching system that provides a wireless communication service in a private switching network is commonly referred to as a private wireless switching system. The private wireless switching system connects wireless terminals in a premises to a private switching network or connects a wired terminal using a private switching network to a wireless terminal. In addition, the private wireless switching system connects the wireless terminal to the external wireless network as well as the exchange between the wireless terminal and the wired terminal in the premises.

1 is a flowchart of radio call processing in a conventional private radio switching system.

Referring to FIG. 1, when a call from a wireless terminal (hereinafter referred to as a "wireless call") occurs, it is transmitted through a base station controller (hereinafter referred to as "BTS"). BSC ". When the BSC receives the radio call from the radio terminal, the BSC provides a call management service request message (CM_Service_Request) to the call manager in step 110. The call manager receiving the CM_Service_Request occupies a connection (PCM) with a predetermined private exchange A. If the PCM is occupied with the predetermined private exchange, the call manager provides an assignment request message (Assignment_Request) in response to the CM_Service_Request to the BSC in step 112. After receiving the Assignment_Request, the BSC establishes a link through a predetermined channel with the BTS and provides an assignment completion message (Assignment_Complete) indicating that the link is set up in step 114 to the call manager. The call manager receiving the Assignment_Complete provides a call creation message (Make Call) to the PCM occupied private exchange A in step 116 to allow routing to the private exchange in which the called party is located. For example, if the called party is located in the private exchange A, the routing of the private exchange period will not occur. However, if the called party is located in a private exchange other than the private exchange A, in step 118, routing between the private exchange A and the private exchange B (private exchange B) is required.

As described above, in the conventional private radio switching system, there is a problem in that traffic in the private switching period increases as line occupancy is required for routing of the private switching period in processing a radio call.

Accordingly, an object of the present invention for solving the above problems is to provide a call processing method for reducing traffic due to radio calls in a private radio switching system.

Another object of the present invention is to provide a call processing method for reducing the line occupation of a private switching period occurring due to a radio call in a private wireless switching system.

It is still another object of the present invention to provide a method for processing a radio call without routing private exchange period in a private radio switching system.

In a first aspect for achieving the above object, the present invention provides a wireless communication system through a base station and a base station controller in a call management unit of a private radio switching system having a plurality of private exchanges having information of subscribers belonging to other private exchanges. A method of processing a wireless call provided from a terminal, the method comprising: inquiring a called-side private exchange to which the wireless call is to be connected to any of the private exchanges when a wireless call is provided from the wireless terminal; Establishing a connection to the called party's private exchange provided from the arbitrary private exchange in response to the inquiry and providing the set connection information to the base station controller to connect the radio call to the called party's private exchange. It is characterized by.

In a second aspect to achieve the object as described above, the present invention provides a method for processing a radio call provided from a wireless terminal in a private wireless switching system having a plurality of private exchanges having information of subscribers belonging to other private exchanges. A method, comprising: providing a call management service request message including a called party information to a call management unit when a wireless call from the wireless terminal is provided to a base station controller through a base station, and the call management service request message. Correspondingly, the call manager provides a node request message including the called party information to any of the private exchanges, and the called party information from the selected private exchange in response to the node request message. Node information of the destination private exchange corresponding to Providing a node response message to the call management unit, and establishing a connection to the called private exchange by the node information included in the node response message and providing the set connection information to the base station controller. And connecting the radio call to the called private exchange.

1 is a flowchart of a radio call processing in a conventional private radio switching system.

2 is a block diagram of a conventional private wireless switching system.

3 is a flowchart of a radio call processing in a private radio switching system according to an embodiment of the present invention.

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

2 is a block diagram of a conventional private radio switching system. As shown in FIG. 2, a private wireless switching system is divided into a configuration for connecting a wireless network and a configuration for connecting a private switching network. That is, it is a configuration of a system in which a public land mobile network (hereinafter referred to as "PLMN") and a private wireless network are interworked through a BSC.

Referring to FIG. 2, the BTS 212 performs wireless communication with a wireless terminal. The BTS 210 performs voice compression using a high capacity IPC node assembly (HINA) scheme with the BSC 210. Send a packet or data packet. For the high capacity IPC node assembly (HINA) method, a HINA connecting a subsystem in the BSC 210, a HINA for a router for connecting to another BSC, and a HIPA (High capacity IPC Processor Assembly) for controlling the two HINAs are provided. Equipped. The two HINAs perform node functions, which are matched to the subsystem with which they wish to communicate and have a built-in buffer to perform rate conversion. The HIPA is a network manager that performs a network management function. The HIPA monitors and controls the state of all nodes by managing or controlling the two HINAs. The BSC 210 transmits a voice compressed packet or a data packet to the PLMN 216 and the call manager 214 by the HINA method. Accordingly, the BTS 212, the BSC 210, and the PLMN 216, and the BTS 212, the BSC 210, and the call manager 214 are configured as the HINA packet network. Meanwhile, the BSC 210 is connected to the plurality of private exchanges 220, 222, and 224 by pulse code modulation (hereinafter, referred to as "PCM") to transmit voice traffic. In addition, the plurality of private exchanges (220, 222, 224) performing the exchange to a plurality of wired terminals are also connected to the PCM to transmit mutual voice traffic. The call manager 214 manages calls handled by the BSC 210, and the call manager 214 and the private exchanges 220, 222, and 224 have a local area network (LAN). 218).

3 is a flowchart of processing a radio call generated from a wireless terminal in a private radio switching system having the above-described configuration. That is, the call processing flow shown in FIG. 3 illustrates a procedure for directly connecting the BSC and the destination private exchange period without the routing operation of the private exchange period.

Referring to FIG. 3, the BSC 210, which has received a radio call from the wireless terminal through the BTS 212, requests routing information to a predetermined private exchange, and the called party responds to routing information provided in response to the request. Establishing a connection to a private exchange and notifying the BTS 212, and when the BTS 212 is notified that the establishment of a wireless link with the wireless terminal is completed, the call is set to the called private exchange. It is a process of requesting creation.

Hereinafter, an operation according to an embodiment of the present invention will be described in detail with reference to the configuration as described above.

The wireless call originating for requesting communication from the wireless terminal is provided to the BTS 212 via a paging channel. Upon receiving this, the BTS 212 notifies the BSC 210 that there is a communication request from the wireless terminal. When the BSC 210 is notified, the BSC 210 determines a target network for which communication has been requested. The determination is made by the called party information provided from the wireless terminal. The called party information may be a phone number of the called party. In this case, the target network may be a PLMN 216 or a private switching network. In the case where the communication requested target network is the PLMN 216, a detailed description thereof will be omitted since it is irrelevant to the present invention. Meanwhile, if it is determined that the target network is the private switching network, the BSC 210 provides a call management service request message (CM_Service_Request) to the call manager 214 in step 310. The CM_Service_Request includes called party information for which communication is requested from the wireless terminal. The call manager 214 receiving the CM_Service_Request provides a node request message (Node_Request) for inquiring a private exchange to which the called terminal belongs to a predetermined private exchange A (220). The Node_Request stores called party information. The predetermined private exchange may be arbitrarily designated among the plurality of private exchanges 220, 222, and 224. In addition, the private exchanges 220, 222, and 224 know subscriber information belonging to other private exchanges as well as subscribers belonging to them.

The private exchange A 220 receives the Node_Request and checks which private exchange the subscriber belongs to by the called party information stored in the Node_Request. If the private exchange to which the subscriber belongs is determined by the check, the private exchange A 220 provides a node response message Node_Response to the call manager 214 in step 314. The Node_Response includes the node number of the private exchange which designates the determined private exchange.

The call manager 214 receiving the Node_Response establishes a connection with the destination private exchange 222 corresponding to the node number included in the Node_Response. The connection setting is performed to examine PCMs connecting between the called private exchange 222 and the BSC 210 and determine a PCM channel to be used among the PCMs. When the connection setting is made, the call manager 214 assigns the set connection information to an assignment request message (Assignment_Request) and provides it to the BSC 210 in step 316. The connection information is the determined PCM channel. Meanwhile, the Assignment_Request is a message requesting the BSC 210 to establish a link with the wireless terminal through the BTS 212.

The BSC 210 receiving the Assignment_Request establishes a link between the wireless terminal and the BSC 210 by allocating a traffic channel for performing wireless communication with the wireless terminal to the BTS 212. When the link setup is completed, the BSC 210 provides an assignment completion message (Assignment_Complete) to the call manager 214 to notify that link allocation is completed in step 318. The call manager 214 provided with the Assignment_Complete provides a call generation message (Make_Call) requesting call generation to the called party's private exchange B 222 in step 320.

Thus, the wireless terminal completes the connection to the called party's private exchange B (222), and the called party's private exchange B (222) calls the called party's subscriber by a normal extension exchange operation to communicate with the wireless terminal. to provide.

As described above, the present invention eliminates unnecessary routing between private exchanges by directly inspecting the private exchange to which the called party subscriber belongs and directly connecting the requested wireless terminal to the corresponding private exchange. As a result, by reducing the circuit occupancy between the private exchanges, there is an effect of reducing the traffic in the private wireless switching system.

Claims (5)

A method of processing a radio call provided from a wireless terminal through a base station and a base station controller in a call management unit of a private radio switching system having a plurality of private exchanges having information of subscribers belonging to other private exchanges, Inquiring a called party's private exchange to which the wireless call is to be connected to any of the private exchanges when a wireless call from the wireless terminal is provided; Connecting the radio call to the called-side private exchange by setting up a connection to the called-side private exchange provided from the arbitrary private exchange in response to the inquiry and providing the set connection information to the base station controller. Wireless call processing method in a private radio switching system characterized in that. The method of claim 1, And the node information of the called-side private exchange is provided from the arbitrary private exchange in response to the inquiry. The method of claim 2, And requesting to establish a link with the wireless terminal when providing the set connection information to the base station controller. A method of processing a wireless call provided from a wireless terminal in a private wireless switching system having a plurality of private exchanges having information of subscribers belonging to other private exchanges, the method comprising: Providing, by the base station controller, a call management service request message including called party information to a call management unit when a wireless call from the wireless terminal is provided to a base station controller through a base station; In response to the call management service request message, providing a node request message including the called party information to any one of the private exchanges by the call manager; Providing, to the call management unit, a node response message including node information of a called party private exchange corresponding to the called party information from the any private exchange in response to the node request message; The call management unit establishes a connection to the called party's private exchange based on the node information included in the node response message and provides the set connection information to the base station controller to connect the radio call to the called party's private exchange. Wireless call processing method in a private radio switching system comprising a process. The method of claim 4, wherein And requesting to establish a link with the wireless terminal when providing the set connection information to the base station controller.