KR20010105691A - Method for processing incoming packet data call in serving high speed data at mobile communication system - Google Patents

Abstract

The present invention provides a method for processing packet call reception in a high speed data service in a mobile communication system. The present invention provides a PDSN in a dormant state after establishing a logical connection between a BSC and a PDSN of an IS-2000 system for a high speed data service. When the incoming message is received, the PDSN sends a message reception notification message to the BSC, paging the MSC to which the BSC belongs, finds the BSC containing the terminal, and establishes a new logical connection with the found BSC to transmit the message. Even if the corresponding terminal exists in another BSC, it is possible to reconfigure and process a new logical connection without losing a message.In the process of receiving packet data while performing handoff function between BSCs in a mobile IP in a wireless communication network. Even if the location of the terminal exists somewhere other than the BSC registered in the network, the incoming call processing is enabled. Incoming completion rate is improved.

Description

Method for processing incoming packet data call in serving high speed data at mobile communication system}

The present invention relates to a packet data call forwarding processing method when a high-speed data service is provided by adopting International Standard-2000 (IS-2000) which is a standard for a service of a third generation mobile communication system (International Mobile Telecommunications-2000).

1 shows a packet call incoming processing method in a high speed data service in a conventional mobile communication system.

As shown, when packet data necessary for high-speed data service is received in a mobile communication system, a PDSN (Packet Data Service Node) may transmit packet data to a BSC in which a logical connection is established (ST1, ST2); Performing paging when an incoming call request is transmitted from the BSC (ST3, ST4); When a response to paging is transmitted from the BSC, a step (ST5-ST7) of transmitting packet data to the corresponding terminal through the BSC is performed.

In the conventional mobile communication system as described above, a method of processing packet call reception during high-speed data service will be described. When a terminal (mobile communication terminal) performs a mobile IP registration procedure and a BSC in which a logical connection with a PDSN is established is a first BSC When the PDSN receives the packet data, the PDSN transmits the packet data to the first BSC (ST1 and ST2).

The first BSC then transmits the incoming processing request to the switching center (MSC) to which the first BSC belongs (ST3). Therefore, the MSC requests paging to all BSCs in charge (ST4).

At this time, when a paging response comes from the first BSC, the MSC requests radio resource allocation to the first BSC. Thus, packet traffic for a high speed data service is transmitted to the corresponding terminal through the first BSC.

However, when the terminal located in the area where the handoff is possible and the logical path established with the first BSC moves to the second BSC, the paging response cannot be received from the first BSC when the paging is performed.

Therefore, the PDSN receives the packet data to be transmitted to the terminal from the Internet, but the PDSM cannot transmit the packet data to the terminal because the logical connection is not established with the second BSC in which the terminal is currently located. . The receiving terminal has a problem that can not receive the message.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the object of the present invention is

After establishing a logical connection between the BSC and the PDSN where the logical connection to the corresponding terminal already exists, if packet service data is received from the PDSN, the BSC is notified of the reception of the packet data traffic message, and through the paging procedure, the other BSC If the called terminal exists at, the new BSC and the new logic setup work are completed, and the message is sent to the corresponding terminal via the newly completed BSC, thereby completing the packet call termination rate at the overlapping area of the corresponding BSC cover area. The present invention provides a method for processing packet call reception in a high speed data service in a mobile communication system.

In order to achieve the above object, in the mobile communication system according to the present invention, a packet call incoming processing method in a high speed data service,

When the mobile IP registration procedure of the terminal is performed and the logical connection between the corresponding BSC and the PDSN is established, and in the dormant state, when the incoming traffic required for the high-speed data service is received, the BSC performs the paging process to identify the BSC in which the terminal is located. Confirmation step;

According to the result of the check, a method of transmitting a packet data for transmitting packet data to the BSC in which the corresponding terminal is located is characterized in that the method configuration.

If the terminal is located in the BSC connected to the PDSN as a result of the check, the packet data is transmitted to the terminal through the BSC, and if the terminal is located in the new BSC, the PDSN is connected to the new BSC. After establishing a new connection, the packet data is transmitted to the corresponding terminal through the new BSC.

1 is a flowchart illustrating a packet call incoming processing method in a conventional mobile communication system;

2 is a block diagram of a mobile communication control station system for high-speed data service to which the present invention is applied;

3 is a flowchart illustrating a method for processing packet call reception during a high speed data service in a mobile communication system according to the present invention;

4 is a flowchart showing a packet call incoming processing method when the called terminal is located in a Mobile_IP registered BSC;

5 is a flowchart illustrating a packet call incoming processing method when the called terminal is located in a BSC other than the BSC registered with Mobile_IP.

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

1,2: BTS 10: BSC

11: AMB 12: Local Router

13: CCP / ACP 20: Universal Router

30: PDSN

Hereinafter, a method of processing packet call reception in a high speed data service in a mobile communication system according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a mobile communication control station system for high-speed data service to which the present invention is applied.

A global router 20, a local router 12, and an ATM multiplexing / demultiplexing block (AMB) 11 provide communication paths for Asynchronous Transfer Node (ATM) cellized packetized data between each subsystem. Serves to provide. The general purpose router 20 is connected to the local router 12 of each BSC to provide a communication path between the base station controllers (BSCs), and a packet data service node (PDSN) 30 is provided to provide a path of packet data. It is connected to the Inter Working Function (IWF). In addition, a base station manager (BSM) 22, a clock distributor 21, and the like, which are common parts of 12 BSCs, are connected.

The local router 12 provides a communication path between each block in the BSC 10 and is connected with the AMB 11 to connect the BTS 1, 2 located at a remote location.

AMB (11) is a multiplexing function that integrates voice and control data received through E1 from multiple BTS (1) (2) into an Optical Carrier-3 (OC-3) interface and connects to the local router 12. It also plays a role in demultiplexing, its dysfunction. In addition, the voice data received from the BTS (1) (2) is converted into a form that can be processed by the High Speed Data & Transcoder Selector Bank (HTSB) 15, and the voice data received from the HTSB 15 is converted into a BTS ( It converts into a form that can be processed in 1) (2).

The BSM 22 is a system that manages the entire BSC 10 and the base transceiver station (BTS) 1, 2, and manages resources, manages the status, manages the configuration, user interface, and maintenance. Consists of various input and output devices for convenience.

The call control processor (CCP) 13 is a processor block that performs call processing control functions of the entire BSC, such as call processing control and selector management, through a local router 12 and is connected to an ATM for signal data processing.

The CSB (Common Channel Signaling Block) 14 converts the ATM of the CCP 13 into No. 7 when connected to the MSC 40 and provides a function of connecting to the MSC 40 through the trunk of the HTSB 15. Block.

The Alarm Control Processor (ACP) 13 collects various alarm states in the BSC 10 and reports them to the BSM 22 to efficiently manage and operate the system. The Clock Distributor (CKD) 21 is used to provide a reference time used in the BSC 10 and converts a clock received from a Global Position System (GPS) satellite to distribute a synchronization signal required for the system. .

One HTSB 15 is connected to the MSC 40 and four trunks E1, and receives the 64 Kbps Pulse Code Modulation (PCM) voice signal received through the Enhanced Variable Rate Coder (EVRC) and Qualcomm Code Excited Linear (QCELP). Performs signal conversion using Prediction and Conjugate Structure-Algebraic Code Excited Linear Prediction (CS-ACELP) algorithms, and sends them to the channel card of the BTS (1) (2) via the local router 12 and the AMB (11). And its reverse function. In addition, the packet data transmitted from the IWF is processed by the HTSB 15 and transmitted to the BTS 1 and 2 through the local router 12 and the AMB 11, and also performs a reverse function thereof. The HTSB 15 performs a handoff function and power control of the radio link in association with the BTS 1 and 2. Software for packet data reception processing according to the present invention resides in the CCP 13 of the BSC 10 and the PCSN (PDSN Control Processor) of the PDSN 30.

3 is a flowchart illustrating a method for processing packet call reception in a high speed data service in a mobile communication system according to the present invention.

As shown in the figure, during packet data incoming processing required for high-speed data service in a mobile communication system, if packet data is received after establishing a logical connection between the BSC and the PDSN, the BSC performs a paging process to identify the BSC in which the terminal is located. Confirmation steps ST11-ST15; According to the check result, a packet data transmission step (ST16-ST20) of transmitting packet data to the BSC in which the corresponding terminal is located is performed.

The BSC checking step (ST11-ST15) may include: when the packet data is received after the logical connection between the BSC and the PDSN is established, the PDSN notifies the BSC that the packet data has been received (ST11, ST12); Requesting, by the BSC, a call processing to a mobile switching center (MSC) (ST13); Requesting paging to all BSCs controlled by the MSC that has received the incoming processing request (ST14); Upon receiving the paging request, the BSC performs paging and transmits a paging response message to the MSC (ST15 and ST16) when a response is received from the corresponding terminal.

The packet data transmitting step (ST16-ST20) may include: transmitting the packet data to the corresponding terminal through the BSC (ST16, ST17) if the corresponding terminal is located in the BSC established with the PDSN; If the corresponding UE is located in a new BSC, the PDSN establishes a new connection with the new BSC, and then transmits packet data to the corresponding UE through the new BSC (ST18-ST20).

Referring to the packet call incoming processing method for high speed data service in the mobile communication system according to the present invention as follows.

After performing the mobile-IP registration procedure, if the packet traffic to be received by the terminal in the dormant state arrives at the PDSN, the PDSN receives the incoming-message to notify the first BSC in which the logical connection related to the terminal exists. Notify by call-notify (ST11, ST12).

Then, the first BSC transmits a message requesting incoming processing to the MSC (ST13). Upon receiving the incoming processing request, the MSC transmits a paging request to the BSCs having jurisdiction (ST14) to perform a paging processing procedure for the BSCs having jurisdiction.

Therefore, the BSCs controlled by the MSC page the destination terminal. In this case, as shown in FIG. 4, when the terminal is located in the first BSC registered with the mobile_IP, the MSC transmits a paging response (CM_SVC_REQUEST) from the first BSC in which the logical connection is established with the PDSN. An assignment-request message is transmitted to the BSC to request radio resource allocation.

After completing the radio resource allocation procedure, the first BSC notifies the MSC of the end of the radio resource allocation operation through an assignment complete message (ST16).

Thereafter, the first BSC transmits an incoming_call_reply message for notifying the end of the radio work for itself to the PDSN to start work for establishing a connection with the PDSN. Therefore, the message received from the PDSN IP network is transmitted to the corresponding terminal via the first BSC (ST17).

However, when the paging procedure is performed, as shown in FIG. 5, if the terminal is not located in the first BSC registered with mobile_IP and receives a paging response from a new second BSC that does not have a logical connection with the PDSN, the MSC Transmits an assignment-request message to the second BSC and requests radio resource allocation (ST18).

The second BSC that terminates the radio resource allocation procedure notifies the MSC of the end of the radio resource allocation operation through an assignment complete message.

Thereafter, the second BSC transmits a MIP_registration_request message to the PDSN to start the connection establishment. The PDSN notifies the work completion by sending a MIP_registration_reply message to the second BSC after the completion of the logical connection establishment procedure. In this way, after the logical connection between the PDSN and the second BSC is established, the PDSN transmits the packet message received from the IP network (Internet) to the corresponding terminal via the second BSC (ST19).

Since the PDSN does not need a logical connection with the first BSC, the PDSN terminates the procedure by performing a disconnection procedure (ST20).

As described above, in the mobile communication system according to the present invention, in the packet data call processing method of the high speed data service, the PDSN receives an incoming message in a dormant state after establishing a logical connection between the BSC and the PDSN of the IS-2000 system for the high speed data service. When receiving the PDSN, the PDSN transmits a message reception notification message to the BSC, paging at the MSC to which the BSC belongs, finds the BSC including the existing terminal, establishes a new logical connection with the BSC, and transmits the message to the existing terminal. Even if it exists in this other BSC, it is possible to reconfigure and process a new logical connection without losing a message.The position of the terminal during packet data incoming processing during the handoff function between BSCs in a mobile IP service in a wireless communication network Even if the BSC is not registered in the network, the incoming call processing is possible, and the completion rate of packet call reception is improved. Thereby there is an effect that the.

Claims (2)

In the packet call incoming processing method when the incoming traffic required for the high-speed data service is received in the dormant state after the mobile IP registration procedure of the terminal is performed and the logical connection between the corresponding BSC and the PDSN is established, A BSC checking step of checking a BSC in which a corresponding UE is located by performing a paging process when packet data is received at the PDSN after a logical connection between the BSC and the PDSN is established; And a packet data transmission step of transmitting packet data to a BSC in which the corresponding terminal is located according to the check result. The method of claim 1, wherein the packet data transmission step, If the corresponding terminal is located in a BSC established with the PDSN, transmitting the packet data to the corresponding terminal through the BSC; If the corresponding terminal is located in a new BSC, the PDSN establishes a new connection with the new BSC, and then transmits packet data to the corresponding terminal through the new BSC. Packet call forwarding processing method in data service.