KR20040059571A - ATM System and ATM address architecture/Source management method for soft handoff processing in IMT-2000 system - Google Patents

Abstract

PURPOSE: An ATM system for soft handoff processing in an IMT-2000 system and a method for managing address systems/resources are provided to grant an address system to an ATM node for soft handoff processing in an ATM-based IMT-2000 system and to establish and release a new ATM resource in a software way, when a soft handoff is generated, so as to be applied for a high speed data service communication network that executes resource management between terminals and systems on the basis of an ATM network. CONSTITUTION: A source CCP(Call Control Processor) transmits a soft handoff setup signal to a target CCP(S11). The target CCP selects a call resource and an ATM resource, available internally(S12). The target CCP transmits a soft handoff response message to the source CCP(S13). The source CCP transmits an ATM resource setup message to an ASP(ATM Switch Processor)(S14). The ASP transmits the ATM resource setup message to an A-OC-3 board connected to an ATB(ATM Trunk Board)(S15). The ASP transmits the ATM resource setup message to a G-OC-3 board connected to a global router(S16). The A-OC-3 board transmits an ATM resource setup response message to the ASP(S17). The G-OC-3 board transmits an ATM resource setup response message to the ASP(S18). The target CCP transmits an ATM resource setup message to the ASP(S19). The ASP transmits the ATM resource setup message to an H-OC-3 board connected to an HTSB(High speed and Transcoder Bank)(S20). The ASP transmits the ATM resource setup message to the G-OC-3 board connected to the global router(S21). The H-OC-3 board transmits an ATM resource setup response message to the ASP(S22). The G-OC-3 board transmits an ATM resource setup response message to the ASP(S23).

Description

ATM System and ATM address architecture / Source management method for soft handoff processing in IMT-2000 system

The present invention provides an ATM node address system for soft handoff processing in an ATM-based IMT-2000 system, and in an IMT-2000 system that enables a new ATM resource to be set and released in software when a soft handoff occurs. Addressing schemes and resource allocation and deallocation methods, in particular the definition of new addressing schemes required for communication between each ATM node at all ATM endpoints for soft handoff processing in the IMT-2000 system, and all ATM end nodes in the IMT-2000 system. VPI / VCI is pre-allocated, and call control information for soft handoff between each ATM node is transmitted through pre-allocated VPI / VCI resources to perform call resource and ATM resource management when soft handoff call setup is requested. The processor transmits according to the ATM resource set to the processor of the ATM switch. IMT-2000 soft hand by sending the handoff data to the corresponding destination ATM node so that when the soft handoff traffic data call is released, the processor performing call resource and ATM resource management request to release the ATM resource set in the processor of the ATM switch. It allows communication between many ATM end nodes for off processing.

In general, various problems arise when the existing ATM connection scheme is used for the IMT-2000 system network itself.

That is, to handle soft handoff of ATM network-based IMT-2000 system that provides high-speed packet data service, a new address system for communication between each ATM end node should be defined. The high-level Data Link Controller (HDLC) type of address system used in the A / B service system cannot be used in an ATM-based IMT-2000 system that provides high-speed packet data service.

In addition, in order to handle soft handoff of the IMT-2000 system, a virtual path identifier (VPI) / Virtual Channel Identifier (VCI) (Virtual Access Channel) is pre-assigned to all ATM nodes, and data is transmitted through a set ATM resource. In case of using Permanent Virtual Circuit (PVC) method, there is a problem that an operator must directly allocate and release all ATM resource connections between ATM end nodes and ATM switches of IMT-2000, and also handle soft handoff of IMT-2000 system. All ATM end nodes related to must have ATM connection configuration. In IMT-2000 system, because there are many ATM end nodes, there is a problem of hardware limitation, which causes difficulty in system scalability.

In addition, when SVC is applied to each ATM end node of the IMT-2000 system, soft handoff is frequently performed because call resources are frequently allocated because the available ATM resources are allocated through the signaling procedure. In the IMT-2000 system, a significant load is generated, and call setup delay time is generated. Also, in order to apply SVC to an ATM node, OS binding and development of interface application software are required.

In addition, when the resource allocation procedure is performed at each ATM node, there is a problem of limitation of ATM resources and system scalability that can be used at each ATM end, and a problem of data transmission delay related to resource allocation processing. There was this.

Accordingly, the present invention is proposed to solve the above problems of the prior art,

An object of the present invention is to provide an ATM node address system for soft handoff processing in an ATM-based IMT-2000 system, and to set and release new ATM resources in software when a soft handoff occurs. For soft handoff processing in an IMT-2000 system that can be applied to a high-speed data service communication network that performs resource management between a terminal and a system, and enables communication between numerous ATM end nodes for IMT-2000 soft handoff processing. It is to provide ATM addressing system and resource management method.

Local router responsible for setting and releasing ATM resources in software when the IMT-2000 soft handoff occurs in accordance with the present invention for achieving the above object,

ATM Switch Processor (ASP) which receives CCP and ATM resource allocation setting and release command when soft handoff occurs and executes the command on the internal router internal board;

It is connected to the HTSB and performs the function of setting and releasing the ATM resource commanded from the ASP, and delivers the soft handoff traffic data delivered to the global router to the HTSB and the traffic data received from the HTSB to the global router H-OC-3 board to perform the function,

A function of setting and releasing ATM resources commanded from the ASP, connected to an ATB, and delivering soft handoff traffic data delivered to a global router to the ATB and forwarding traffic data received from the ATB to a global router. With an A-OC-3 board to perform,

It is connected to a global router to set up and release the ATM resources commanded from the ASP, deliver soft handoff traffic data delivered to the global router to the HTSB and ATB, and transmit the traffic data received from the HTSB and ATB. It consists of G-OC-3 board that performs the function of delivering to global router.

In addition, the resource management method for the soft handoff processing in the IMT-2000 system according to the present invention for achieving the above object,

When a soft handoff setup signal message is transmitted from a source call control processor (CCP) to a target CCP, selecting a call resource and an ATM resource available internally from the target CCP that has received the soft handoff request;

Transmitting a soft handoff response message to a source CCP requested by the target CCP, and transmitting an ATM resource setting message from the source CCP to an ATM switch processor (ASP);

When the ASP transmits an ATM resource setup message to an A-OC-3 board connected to an ATB (ATM Trunk Board), the ATM transmits an ATM resource setup message to a G-OC-3 board connected to a global router. To do that,

Transmitting an ATM resource configuration response message from the A-OC-3 board connected to the ATB to the ASP; transmitting an ATM resource configuration response message from the G-OC-3 board connected to the global router to the ASP;

Transmitting the ATM resource configuration message from the target CCP to the ASP, transmitting the ATM resource configuration message from the ASP to an H-OC-3 board connected to a high speed & transcoder selector bank (HTSB);

Transmitting an ATM resource configuration message from the ASP to a G-OC-3 board connected to a global router by sending an ATM resource configuration response message to an ASP from an H-OC-3 board connected to the HTSB;

And transmitting an ATM resource setup response message from the G-OC-3 board connected to the global router to the ASP.

In addition, the resource management method for the soft handoff processing in the IMT-2000 system according to the present invention for achieving the above object,

Transmitting traffic data from the CCP to the ATM switch from the CCP to the allocated call resource VCI;

In the OC-3 board connected to the ATB, the data transmitted from the ATB is transferred to the target global router by performing ATM cell header conversion according to the ATM resource setting allocated from the CCP during the soft handoff signal procedure. To do that,

In the global router, the traffic ATM cell transmitted from the source local router performs ATM cell header conversion, and then transmits to the target local router.

In the OC-3 board connected to the global router, the ATM cell received from the global router is transferred to the corresponding HTSB after the ATM cell header conversion is performed according to the ATM resource setting assigned by the CCP during the soft handoff signal procedure. It is characterized by the methodological configuration.

In addition, the resource management method for the soft handoff processing in the IMT-2000 system according to the present invention for achieving the above object,

When the soft CCP receives the soft handoff release request signal message from the source CCP to the target CCP, the target CCP that receives the soft handoff request releases the call resources and the ATM resources that are available in the service;

Transmitting an ATM resource release message from the source CCP to an ASP, transmitting an ATM resource release message from the ASP receiving the A-OC-3 board connected to the ATB;

Transmitting an ATM resource release response message from the ASP to the G-OC-3 board connected to the global router by sending an ATM resource release response message from the A-OC-3 board connected to the ATB to the ASP;

Transmitting an ATM resource release response message from the G-OC-3 board connected to the global router to the ASP;

Transmitting an ATM resource establishment message from the target CCP to an ASP, transmitting an ATM resource establishment message from the ASP to an H-OC-3 board connected to an HTSB;

Transmitting an ATM resource configuration message from the ASP to a G-OC-3 board connected to a global router by transmitting an ATM resource configuration response message from the H-OC-3 board connected to the HTSB to the ASP;

The method comprises the step of transmitting an ATM resource configuration response message to the ASP from the G-OC-3 board connected to the global router.

1 is a view schematically showing the overall structure of a system for IMT-2000 soft handoff according to the present invention,

2 is a diagram showing the structure of a control station system for IMT-2000 soft handoff according to the present invention;

3 is a diagram illustrating an IMT-2000 soft handoff call setup signal procedure according to the present invention;

4 is a diagram illustrating an IMT-2000 soft handoff traffic resource transmission procedure according to the present invention;

5 is a diagram illustrating an IMT-2000 soft handoff call release signal procedure according to the present invention.

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

10, 20 ..... Base station controller (BSC)

11, 24 ..... Call Control Processor (CCP)

12, 22 ..... HTSB (High speed & Transcoder Selector Bank)

13, 23 ..... ATB (ATM Trunk Board)

14, 21 ..... Local Router

30 ..... Global Router

Hereinafter, preferred embodiments of the "ATM address system and resource management method for soft handoff processing in IMT-2000 system" according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figures 1 and 2 attached to the design of the address structure of the IMT-2000 packet data system according to the present invention will be described.

First, a brief description of the IMT-2000 packet data system according to the present invention,

FIG. 1 is a diagram schematically illustrating the overall structure of a system for IMT-2000 soft handoff according to the present invention, and illustrates an entire ATM (Aysnchronous Transfer Mode) node of the system for IMT-2000 soft handoff.

As shown therein, reference numerals 11 and 24 denote call control processors (CCPs) for call processing and call resource and ATM resource management when a soft handoff occurs, and reference numerals 12 and 22 denote voice traffic protocol processing. Represents the HTSB (High speed & Transcoder Selector Bank) in charge of the functions, and reference numerals 13 and 23 represent ATM trunk boards (ATBs) that handle voice traffic with regions belonging to terminals requiring soft handoff. 14 and 21 represent a local router that is responsible for switching voice traffic data at high speed, and reference numeral 30 connects two control stations (BSCs) to which soft handoff is generated and traffic data. Represents a global router that transmits to the corresponding destination.

2 is a diagram illustrating a structure of a control station system for IMT-2000 soft handoff according to the present invention, and shows an internal structure diagram of a local router that is responsible for setting and releasing ATM resources in software when IMT-2000 soft handoff occurs. Drawing.

As shown in the figure, an ATM switch processor (ASP) 110 which receives a CCP 200 and an ATM resource allocation setting and release command when a soft handoff occurs, and executes a corresponding command on a local router internal board, and an HTSB 300; Connected to perform the function of setting and releasing the ATM resources commanded from the ASP 110, and transmits the soft handoff traffic data delivered to the global router 500 to the HTSB 300 and the HTSB 300 H-OC-3 board 120 performing the function of delivering the traffic data received from the global router 500, and the ATB 400 is connected to set and release the ATM resources commanded from the ASP (110) And the soft handoff traffic data transmitted to the global router 500 to the ATB 400 and the traffic data received from the ATB 400 to the global router 500. A-OC-3 board (13 0), connected to the global router 500 to perform the function of setting and releasing the ATM resources commanded from the ASP 110, and transmits the soft handoff traffic data to the global router 500 HTSB (300) And a G-OC-3 board 140 that transmits the traffic data received from the HTSB 300 and the ATB 400 to the global router 500.

Looking at the design of the soft handoff ATM node address structure in the IMT-2000 system according to the present invention through the above configuration as follows.

That is, in the system for processing the IMT-2000 soft handoff, all sections are designed as ATM nodes capable of high-speed switching, and each node communicates through an ATM cell, and these cells are VC (Virtual Channel). Sent according to the connection settings. In addition, the VC connection must be set up for ATM cell transmission in the entire ATM section.

The following is the definition of the Virtual Path Identifier (VPI) / Virtual Channel Identifier (VCI) connection configuration for communication between each ATM node in a system for processing IMT-2000 soft handoff.

First, in a Virtual Path (VP) / Virtual Channel (VC) scheme of a Call Control Processor (CCP) port,

-VP system between CCP and other CCPs,

7 ^th bit: '1' (LR indicator)

GR ID: '000' to '111' (displays each GR ID)

LR ID: '0000' ~ '1011' (each LR ID is displayed)

-VC system between CCP and other CCPs,

● 5 ^th bit: (set to avoid Reserved VCI value (0-31)) "1"

-VP system between CCP and HTSB,

Type ID: '010' (Displays CCP <-> HTSB connection)

HTSB ID: '00'-'11'

-VC system between CCP and HTSB,

OA ID: '000' ~ '111'

-The system between CCP and ATB is

Type ID: '100'

ATB ID: ATB # 0-'0', ATB # 1-'1'

-VP system between CCP and ASP,

1 ^th bit: '1' (Displays the CP <-> ASP connection settings.)

-VC system between CCP and ASP,

● 5 ^th bits: (set in order to avoid the VCI Reserved value (0-31)) '1'

Next, in the VP / VC scheme of the HTSB (High speed & Transcoder Selector Bank) port,

-VP system between HTSB and CCP,

Type ID: '00'

-VC system between HTSB and CCP,

OA ID: '000' ~ '111'

The VP system between HTSB and ATB is

OA ID: '000' ~ '111'

-VC system between HTSB and ATB,

Handoff: '01' to '11' (Handoff identifier)

OA ID: '000' ~ '111'

Voice ID: '0000000' ~ '1111000'

Next, in the VP / VC scheme of the ATB (ATM Trunk Board) port,

The VP system between ATB and CCP

Type ID: '000' (Display ATB <-> CCP connection)

-VC system between ATB and CCP,

● 5 ^th bits: (set in order to avoid the VCI Reserved value (0-31)) '1'

The VP system between ATB and HTSB

6 bits: '1' (ATB <-> indicates connection between HTSB and HDSB)

Link ID: '00000' ~ '11111'

-VC system between ATB and HTSB,

MCCA ID: '000001' (1) ~ '100100' (35)

CE ID: '00000' ~ '111111'

Next, in the VP / VC scheme of the ATM Switch Processor (ASP) port,

VP system between ASP and CCP

1 ^th bit: '1' (Displays the CP <-> ASP connection settings.)

-VC system between ASP and CCP,

● 5 ^th bits: (set in order to avoid the VCI Reserved value (0-31)) '1'

Next, in a VP / VC scheme between a local router (LR) and a global router (GR),

-VP system between CCP and other CCPs,

● 7 ^th bit: "1"

Target GR ID: '000' ~ '111'

Target LR ID: '0000' ~ '1011' (separate each LR port)

-VC system between CCP and other CCPs,

● 5 ^th bits: (set in order to avoid the VCI Reserved value (0-31)) '1'

VP system between HTSB and ATB (Traffic),

● 7 ^th bit: "1"

Target GR ID: '000' ~ '111'

Target LR ID: '0000' ~ '1011' (separate each LR port)

-VC system between HTSB and ATB,

● 10 ^th bits: (set in order to avoid the VCI Reserved value (0-31)) '1'

Referring to the operation of the IMT-2000 system soft handoff address scheme as described above, first, control data used to process the soft handoff generated at the source local router is fixedly pre-assigned IMT-2000. The signal VPI / VCI is used to deliver to the destination, and the traffic data (voice and packet data) transmitted from the terminal is transmitted according to the ATM resources allocated by the processors (CCP and ASP) in charge of ATM resource management.

This will be described with reference to the accompanying drawings (FIGS. 3, 4, and 5).

3 is a diagram illustrating an IMT-2000 soft handoff call setup signaling procedure according to the present invention, and an operation process through VPI / VCI of each ATM node defined in an address scheme in an IMT-2000 soft handoff call setup signaling procedure. It is shown.

As shown therein, a step (S11) of transmitting a soft handoff setting signal message from a source call control processor (CCP) to a target CCP, and a call resource usable internally by the target CCP receiving the soft handoff request And selecting an ATM resource (S12), transmitting a soft handoff response message to the source CCP requested by the target CCP (S13), and transmitting an ATM resource setting message from the source CCP to an ATM switch processor (ASP). Transmitting (S14), transmitting an ATM resource setting message from the ASP to an A-OC-3 board connected to an ATM trunk board (ATB) (S15), and connecting to a global router from the ASP. Transmitting an ATM resource setup message to a G-OC-3 board (S16), transmitting an ATM resource setup response message from the A-OC-3 board connected to the ATB to the ASP (S17), and the global Connected with a router Transmitting an ATM resource configuration response message from the G-OC-3 board to the ASP (S18); transmitting an ATM resource configuration message from the target CCP to the ASP (S19); and HTSB (High speed & Transmitting an ATM resource configuration message to the H-OC-3 board connected to the Transcoder Selector Bank (S20), and transmitting an ATM resource configuration message to the G-OC-3 board connected to the global router in the ASP (S21). ), Transmitting an ATM resource configuration response message to the ASP from the H-OC-3 board connected to the HTSB (S22), and transmitting an ATM resource configuration response message to the ASP from the G-OC-3 board connected to the global router. In step S23, the transmission is performed.

As described above, the IMT-2000 soft handoff call setup signaling procedure according to the present invention operates through the VPI / VCI of each ATM node defined in the address scheme, which will be described in more detail as follows.

In step S11, the soft handoff setup signal message is transmitted from the source CCP to the target CCP, wherein the connection setup VPI / VCI from the source CCP to the target CCP is shown in Table 22 below. Resource, ATM resource).

In step S12, the target CCP that has received the soft handoff request selects a call resource and an ATM resource that can be used therein, and selects a call resource and an ATM resource to be used for soft handoff.

In step S13, the target CCP transmits a soft handoff response message to the requested source CCP. In this case, a call resource and an ATM resource to be used for soft handoff are transmitted, and the VPI / VCI is shown in Table 23 below.

In step S14, the ATM resource setup message is transmitted from the source CCP to the ASP. In this case, the port number to be received and transmitted by the ATM switch, and the VPI / VCI to be converted per port are shown in Table 24 below.

In step S15, an ATM resource setting message is transmitted from the ASP to the A-OC-3 board connected to the ATB. At this time, the VPI / VCI input from the ATB, the ATM switch port number connected to the ATB, and the global router (GR) are output. VPI / VCI, including the global router port number output to the global router.

In step S16, the ATM resource setting message is transmitted from the ASP to the GR connected G-OC-3 board, wherein the VPI / VCI input from the global router, the ATM switch port number connected to the global router, and the VPI / outputted to the ATB are transmitted. Contains the ATB port number output to VCI, ATB.

In step S17, the ATM resource setting response message is transmitted from the A-OC-3 board connected to the ATB to the ASP.

In step S18, the ATM resource setting response message is transmitted from the G-OC-3 board connected to the global router to the ASP.

In step S19, the ATM resource setup message is transmitted from the target CCP to the ASP. In this case, the VPI / VCI to be converted per port including the port number to be received and transmitted by the ATM switch is shown in Table 25 below.

In step S20, the ATM resource setting message is transmitted from the ASP to the H-OC-3 board connected to the HTSB, wherein the VPI / VCI input from the HTSB, the ATM switch port number connected to the HTSB, and the VPI / VCI output to the global router are transmitted. The global router port number is output to the global router.

In step S21, the ATM resource setting message is transmitted from the ASP to the G-OC-3 board connected to the global router, wherein the VPI / VCI input from the global router, the ATM switch port number connected to the GR, and the VPI / outputted to the HTSB are transmitted. Contains the HTSB port number output to VCI and HTSB.

In step S22, the ATM resource setting response message is transmitted from the H-OC-3 board connected to the HTSB to the ASP.

In step S23, the ATM resource setting response message is transmitted from the G-OC-3 board connected to the global router to the ASP.

Next, after the IMT-2000 soft handoff call setup signaling procedure, the soft handoff traffic resource transmission procedure in each HTSBATM node will be described.

4 is a diagram illustrating an IMT-2000 soft handoff traffic resource transmission procedure according to the present invention.

As shown here, in step S31, the traffic data is transmitted from the CCP to the ATM switch in the ATB by the call resource VCI, and the soft handoff signal is transmitted from the ATB in the OC-3 board connected to the ATB. Transmitting the traffic data to the target global router by performing ATM cell header conversion according to the ATM resource setting allocated from the CCP in the procedure (S32), and the traffic ATM cell transmitted from the source local router in the global router. After performing the ATM cell header conversion, and transmitting to the target local router (S33), the OC-3 board connected to the global router is allocated from the CCP during the soft handoff signal procedure ATM cell received from the global router After performing ATM cell header conversion according to the ATM resource setting, the method transmits the corresponding HTSB (S34).

As described above, the IMT-2000 soft handoff call setup signaling procedure according to the present invention operates through the VPI / VCI of each ATM node defined in the address scheme, which will be described in more detail as follows.

In the soft handoff traffic resource transmission procedure according to the present invention as described above, after the IMT-2000 soft handoff call setup signaling procedure, the traffic transmission procedure at each HTSB ATM node will be described in more detail.

In the step S31, the ATB transmits the traffic data to the ATM switch by the call resource VCI allocated in the CCP, wherein the VPI / VCI structure when transmitting data from the HTSB to the ATM switch is shown in Table 26 below.

In step S32, the OC-3 board connected to the ATB performs ATM cell header conversion on the data transmitted from the ATB according to the ATM resource setting allocated from the CCP during the soft handoff signal procedure, thereby transmitting traffic data to the target global router. do.

At this time, the VPI / VCI structure at the input of the ATB to the local router OC-3 board is shown in Table 27 below, and the VPI / VCI structure at the output of the local router OC-3 board to the global router is shown below. It is shown in <Table 28> below.

Input (ATB-> Local Router OC-3 Board)

Output (Local Router OC-3 Board-> Global Router)

In step S33, the global router transmits the traffic ATM cell transmitted from the soap local router to the target local router after performing the ATM cell header conversion. The VPI / VCI structure at this time is shown in Table 29 below.

In step S34, the OC-3 board connected to the global router performs the ATM cell header conversion according to the ATM resource setting assigned by the CCP in the soft handoff signal procedure and transmits the ATM cell received from the global router to the corresponding HTSB. .

At this time, the VPI / VCI structure when inputting from the global router to the local router is as shown in <Table 30> below, and the VPI / VCI structure when outputting from the local router OC-3 board to the HTSB is shown below. 31>.

Input (Global Router-> Local Router)

Output (Local Router OC-3 Board-> HTSB)

FIG. 5 is a diagram illustrating an IMT-2000 soft handoff call release signal procedure according to the present invention, which is operated through VPI / VCI of each ATM node defined in an address scheme in an IMT-2000 soft handoff release signal procedure. It is a diagram showing.

As shown therein, in step S41, a soft handoff release request signal message is transmitted from the source CCP to the target CCP, and the target CCP that has received the soft handoff request releases call resources and ATM resources that are available internally. (S42), transmitting the ATM resource release message from the source CCP to the ASP (S43), and transmitting the ATM resource release message from the ASP to the A-OC-3 board connected to the ATB (S44). And transmitting an ATM resource release message from the ASP to a G-OC-3 board connected to a global router (S45), and transmitting an ATM resource release response message from the A-OC-3 board connected to the ATB to an ASP. Step S46, transmitting an ATM resource release response message from the G-OC-3 board connected to the global router to the ASP (S47), and transmitting an ATM resource setting message from the target CCP to the ASP ( S48), and the ASP Transmitting an ATM resource setup message to the H-OC-3 board connected to the HTSB at step S49, and transmitting an ATM resource setup message to the G-OC-3 board connected to the global router at the ASP at step S50; Transmitting an ATM resource configuration response message from the H-OC-3 board connected to the HTSB to the ASP (S51); and transmitting an ATM resource configuration response message from the G-OC-3 board connected to the global router to the ASP. It consists of a step (S52).

The IMT-2000 soft handoff release signal procedure having the above configuration operates through the VPI / VCI of each ATM node defined in the address system, which will be described in more detail as follows.

In step S41, the soft handoff release request signal message is transmitted from the source CCP to the target CCP, where the VPI / VCI structure is shown in Table 32 below.

In step S42, the target CCP that has received the soft handoff request releases the call resources and the ATM resources available in its own interior. In this case, the target CCP releases the call resources and the ATM resources used for the soft handoff.

In step S43, the ATM resource release message is transmitted from the source CCP to the ASP, wherein the ATM switch includes a port number to be received and transmitted by the ATM switch, and an ATM resource converted per port, and the structure of the VPI / VCI is shown in Table 33 below. Same as

In step S44, the ATM resource release message is transmitted from the ASP to the A-OC-3 board connected to the ATB. At this time, the VPI / VCI input from the ATB, the ATM switch port number connected to the HTSB, the VPI / VCI output to the global router, and the global router port number output to the corresponding global router are included.

In step S45, the ATM resource release message is transmitted from the ASP to the G-OC-3 board connected to the global router. At this time, the VPI / VCI input from the global router, the ATM switch port number connected to the global router, and the VPI / VCI output to the ATB, and the ATB port number output to the ATB.

In step S46, the ATM resource release response message is transmitted from the A-OC-3 board connected to the ATB to the ASP.

In step S47, the ATM resource release response message is transmitted from the G-OC-3 board connected to the global router to the ASP.

In step S48, the ATM resource setup message is transmitted from the target CCP to the ASP. At this time, the ATM switch includes a port number to be received and transmitted, and the VPI / VCI structure to be converted per port is shown in Table 34 below. same.

In step S49, the ATM resource setting message is transmitted from the ASP to the H-OC-3 board connected to the HTSB.

In this case, the VPI / VCI input from the HTSB, the ATM switch port number connected to the HTSB, the VPI / VCI output to the global router, and the global router port number output to the corresponding global router are included.

In step S50, the ATM resource setting message is transmitted from the ASP to the G-OC-3 board connected to the global router, wherein the VPI / VCI input from the global router, the ATM switch port number connected to the global router, and the HTSB are transmitted. It contains the VPI / VCI output and HTSB port number output to HTSB.

In step S51, the ATM resource setting response message is transmitted from the H-OC-3 board connected to the HTSB to the ASP.

In step S52, the ATM resource setting response message is transmitted from the G-OC-3 board connected to the global router to the ASP.

The present invention is also applicable to an ATM-based mobile communication system network having a structure for communicating with a large number of ATM end nodes through the configuration as described above.

According to the present invention "ATM address system and resource management method for soft handoff processing in IMT-2000 system" described above, an address system for soft handoff processing of IMT-2000 system that provides a high-speed packet data service Design and call setup and ATM resource allocation / setting and release algorithms pre-assign VPI / VCI to all ATM end nodes of the IMT-2000 system, and call control information for soft handoff between each ATM node is pre-allocated VPI. / VCI resources, and when the soft handoff call setup request, the processor performing the IMT-2000 system call resource and ATM resource management transmits according to the requested ATM resources to the processor of the ATM switch. When set, the soft handoff data is transmitted to the corresponding destination ATM node through the set VPI / VCI, and the soft handoff traffic data call. In release, IMT-2000 soft handoff by managing ATM resources through the procedure of allocating / setting and releasing ATM resources requesting release of ATM resources set in the ATM switch processor from the processor performing call resource and ATM resource management. This has the advantage of enabling communication between numerous ATM end nodes for processing.

In addition, since there is no need for special commercial SVC software, it has the advantage of reducing the cost of porting and developing the commercial software.

Claims (4)

IMT- including Call Control Processor (CCP), High Speed & Transcoder Selector Bank (HTSB), ATM Trunk Board (ATB), Local Router, and Global Router A system for a 2000 soft handoff, When the IMT-2000 soft handoff occurs, the local router responsible for setting and releasing ATM resources in software is An ATM switch processor (ASP) that receives a CCP and ATM resource allocation setting and release command when a soft handoff occurs and executes a corresponding command on a local router internal board; It is connected to the HTSB and performs the function of setting and releasing the ATM resource commanded from the ASP, and delivers the soft handoff traffic data delivered to the global router to the HTSB and the traffic data received from the HTSB to the global router An H-OC-3 board for performing a function of; A function of setting and releasing ATM resources commanded from the ASP, connected to an ATB, and delivering soft handoff traffic data delivered to a global router to the ATB and forwarding traffic data received from the ATB to a global router. A-OC-3 board to perform; It is connected to a global router to set up and release the ATM resources commanded from the ASP, deliver soft handoff traffic data delivered to the global router to the HTSB and ATB, and transmit the traffic data received from the HTSB and ATB. An ATM system for soft handoff processing in an IMT-2000 system, comprising a G-OC-3 board performing a function of forwarding to a global router. A resource management method for soft handoff processing in an IMT-2000 system, Transmitting a soft handoff setup signal message from a source Call Control Processor (CCP) to a target CCP; Selecting a call resource and an ATM resource available internally in the target CCP upon receiving the soft handoff request; Transmitting a soft handoff response message to a source CCP requested by the target CCP; Transmitting an ATM resource configuration message from the source CCP to an ATM switch processor (ASP); Transmitting an ATM resource setup message from the ASP to an A-OC-3 board connected to an ATM trunk board (ATB); Transmitting an ATM resource configuration message from the ASP to a G-OC-3 board connected to a global router; Transmitting an ATM resource setup response message from the A-OC-3 board connected to the ATB to the ASP; Transmitting an ATM resource setup response message from the G-OC-3 board connected to the global router to the ASP; Sending an ATM resource establishment message from the target CCP to the ASP; Transmitting an ATM resource setup message from the ASP to an H-OC-3 board connected to a high speed & transcoder selector bank (HTSB); Transmitting an ATM resource configuration message from the ASP to a G-OC-3 board connected to a global router; Transmitting an ATM resource setup response message from the H-OC-3 board connected to the HTSB to the ASP; And transmitting an ATM resource setup response message from the G-OC-3 board connected to the global router to the ASP. A resource management method for soft handoff processing in an IMT-2000 system, Transmitting traffic data to the ATM switch from the CCP to the allocated call resource VCI in the ATB; In the OC-3 board connected to the ATB, the data transmitted from the ATB is transferred to the target global router by performing ATM cell header conversion according to the ATM resource setting allocated from the CCP during the soft handoff signal procedure. Making a step; Transmitting, at the global router, the traffic ATM cell transmitted from the source local router to the target local router after performing ATM cell header conversion; In the OC-3 board connected to the global router, the ATM cell received from the global router in the soft handoff signaling procedure according to the ATM resource settings assigned by the CCP, and then transmitting the ATM cell header to the corresponding HTSB. Soft handoff traffic resource transmission method in the IMT-2000 system, characterized in that made. A resource management method for soft handoff processing in an IMT-2000 system, Sending a soft handoff release request signal message from the source CCP to the target CCP; Releasing call resources and ATM resources available within the target CCP in response to the soft handoff request; Sending an ATM resource release message from the source CCP to an ASP; Transmitting an ATM resource release message from the ASP to the A-OC-3 board connected to the ATB; Transmitting an ATM resource release message from the ASP to a G-OC-3 board connected to a global router; Transmitting an ATM resource release response message from the A-OC-3 board connected to the ATB to an ASP; Transmitting an ATM resource release response message from the G-OC-3 board connected to the global router to the ASP; Sending an ATM resource establishment message from the target CCP to an ASP; Transmitting an ATM resource setup message from the ASP to an H-OC-3 board connected to an HTSB; Transmitting an ATM resource configuration message from the ASP to a G-OC-3 board connected to a global router; Transmitting an ATM resource setup response message from the H-OC-3 board connected to the HTSB to the ASP; And transmitting an ATM resource setup response message from the G-OC-3 board connected to the global router to the ASP.