KR100795560B1 - Method for Providing Interworking Information of Mobile Telecommunication System and Broadband Wireless Access System and Apparatus, System Therefore - Google Patents

Abstract

The present invention relates to a method and system for transmitting interworking information between a mobile communication system and a broadband wireless access system.

The present invention provides a mobile terminal by transmitting information related to a broadband wireless access system in a system broadcasting or cell broadcasting procedure broadcasted in a mobile communication system to a mobile terminal capable of accommodating both networks in an interworking system of a mobile communication system and a broadband wireless access system. Efficiently search for this accessible broadband wireless access system. The mobile terminal can reduce battery consumption by periodically searching for heterogeneous systems, and can perform hand off of Make before Break based on the received system information, thereby providing flexible handoff between heterogeneous access systems.

The present invention can be expected to minimize the power consumption of the mobile terminal and to efficiently provide cell information and system information of the BWA system.

Heterogeneous access system, handover between heterogeneous systems, broadband wireless access system

Description

Method for Providing Interworking Information of Mobile Telecommunication System and Broadband Wireless Access System and Apparatus, System Therefore}

1 is a view showing the structure of a mobile communication system and a broadband wireless access system according to an embodiment of the present invention and the interworking structure between these systems proposed in the present invention.

2 is a diagram illustrating an example of overlapping cell arrangement between a mobile communication system and a broadband wireless access system according to an exemplary embodiment of the present invention.

FIG. 3 is a diagram illustrating a network structure for a cell broadcast center presented by 3GPP TS 23.041.

FIG. 4 is a diagram illustrating an embodiment of the network structure shown in FIG. 3 extended to an IAHC interworking network structure according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating a protocol message exchange procedure for a cell broadcast service in the network structure for the CBS shown in FIG.

FIG. 6 is a diagram illustrating a protocol message exchange procedure for transmitting broadband wireless access system information in conjunction with IAHC according to an embodiment of the present invention in the network structure shown in FIG. 5.

FIG. 7 illustrates a message exchange procedure for a system information transmission procedure presented in 3GPP TS 25.331.

8 is a message flow diagram illustrating an operation procedure with a broadband wireless access system by transmitting information of a broadband wireless access system to a mobile terminal in an idle state using a cell broadcast service (CBS) according to an embodiment of the present invention.

9 is a message flow diagram illustrating an operation procedure with a broadband wireless access system by transmitting information of a broadband wireless access system to a mobile terminal in a data transmission state using a cell broadcast service (CBS) according to an embodiment of the present invention.

FIG. 10 is a message flow diagram illustrating an operation procedure with a broadband wireless access system by transmitting information of a broadband wireless access system to an idle mobile station using an SIB broadcast procedure according to an embodiment of the present invention.

11 is a message flow diagram illustrating an operation procedure with a broadband wireless access system for transmitting information of a broadband wireless access system to a mobile terminal in a data transmission state using an SIB broadcast procedure according to an embodiment of the present invention.

12 illustrates BWA system related information included in broadcast information transmitted to a mobile communication system according to an embodiment of the present invention.

13 is a block diagram schematically showing the internal configuration of the IAHC according to an embodiment of the present invention.

14 is a block diagram schematically illustrating an internal configuration of a mobile terminal according to an embodiment of the present invention.

The present invention relates to a method for handover between heterogeneous systems, and more particularly, to a method, apparatus and system for transmitting interworking information between a mobile communication system and a broadband wireless access system.

Currently, the mobile communication system is a third generation (3G) based mobile communication system, and standards are established in the 3rd Generation Partnership Project (3GPP) and 3rd Generation Partnership Project2 (3GPP2). Development is underway, and these systems are expected to evolve into 3rd Generation Evolution (3G Evolution) systems. Unlike these mobile communication systems, many wireless communication systems, such as Wireless Local Access Network (WLAN) and Broadband Wireless Access (BWA) systems, provide high-speed data communication services in specific areas. Is being developed.

In a future network environment in which multiple access systems interoperate with each other, handover and interworking procedures between heterogeneous access systems are required due to the appearance of a mobile terminal having a multi-mode function. In particular, in this type of interworking, the module in charge of the radio access function of the terminal needs to be periodically activated or start the search of the broadband radio access system by another external method.

In addition, the module in charge of the wireless access function of the terminal does not exist in the functional entity for managing the interworking between the mobile communication system network and the broadband wireless access system network, it is possible to generate information of the interworking broadband wireless access system and transmit it to the mobile terminal. none. In addition, the module in charge of the radio access function of the terminal has a problem that the flexible service is impossible due to the increase in the handover delay in performing handover between heterogeneous systems.

In order to solve such a problem, an object of the present invention is to provide a method, apparatus and system for transmitting and notifying interworking information between a mobile communication system and a broadband wireless access system.

According to an aspect of the present invention, a method for transmitting interworking information between a mobile communication system and a broadband wireless access system includes: (a) a cell broadcast service message or system information including interworking information of the broadband wireless access system; Receiving (System Information); And (b) establishing a communication connection between the mobile terminal and the broadband wireless access system based on the cell broadcast service message or the system information.

An apparatus for receiving interworking information between a mobile communication system and a broadband wireless access system according to an aspect of the present invention includes a signal receiver for receiving a cell broadcast service message or system information including interworking information of the broadband wireless access system from the mobile communication system. ; A broadband wireless access unit performing an activation / deactivation function of a broadband wireless access module according to signal processing with the broadband wireless access system; A mobile communication system access unit performing an activation / deactivation function of a mobile communication access module according to signal processing with the broadband wireless access system; And a controller configured to establish a communication connection between the mobile terminal and the broadband wireless access system based on the cell broadcast service message or the system information.

An apparatus for receiving interworking information between a mobile communication system and a broadband wireless access system according to another aspect of the present invention includes a signal for receiving a cell broadcast service message or system information including interworking information of the broadband wireless access system from the mobile communication system. Receiving unit; A broadband wireless access unit performing an activation / deactivation function of a broadband wireless access module according to signal processing with the broadband wireless access system; A mobile communication system access unit performing an activation / deactivation function of a mobile communication access module according to signal processing with the broadband wireless access system; And a controller configured to establish a communication connection between the mobile terminal and the broadband wireless access system based on the cell broadcast service message or the system information.

According to another aspect of the present invention, a method for transmitting interworking information between a mobile communication system and a broadband wireless access system includes: (a) generating a cell broadcast service message or system information including interworking information of the broadband wireless access system; Transmitting to the mobile terminal; And (b) receiving a control message from the mobile terminal and establishing a communication connection with the mobile terminal.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

In addition, the term module described herein refers to a unit for processing a specific function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

Now, a method, apparatus and system for transmitting interworking information between a mobile communication system and a broadband wireless access system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the structure of a mobile communication system and a broadband wireless access system according to an embodiment of the present invention and the interworking structure between these systems proposed in the present invention.

A system for interworking a mobile communication system and a broadband wireless access system according to an embodiment of the present invention includes a mobile terminal 100, a terminal device 110, a universal mobile communication system 120, a broadband wireless access system 130, A public data network (PDN) 140 and an inter access system handover controller (IAHC) 150 are included.

The mobile terminal 100 is a terminal capable of providing communication services in different types of access systems. That is, the mobile terminal 100 may be connected to both the general purpose mobile communication system 120 and the broadband wireless access system 130.

The terminal equipment 110 is a generic term for a personal digital assistant, a personal computer system (PC), etc. having an information processing function by wired / wireless communication and data input / output, and includes a mobile terminal 100 and a general-purpose mobile terminal. Any device may be used as long as it is a terminal capable of transmitting and receiving radio data with the communication system 120 and the broadband wireless access system 130.

Universal Mobile Telecommunication Systems (UMTS) 120 includes Node B 121, Wireless Network Controller 122, Serving GPRS Support Node (SGSN) 123, and Gateway GPRS Support Node (GGSN) 124. And a home subscriber server (HSS) 125.

The Node B 121 is wirelessly connected to the mobile terminal 100 to support a frequency division duplex mode and a time division duplex mode, and supports dual mode operation including these two modes.

A radio network controller (RNC) 122 provides wired and wireless channel management, protocol matching of mobile communication terminals and test units, and protocol matching of base stations. Soft handoff processing, protocol matching with Core Network, General Packet Radio Service (GPRS) access, fault management, system loading, etc. The radio network controller 122 is connected to the Node B 121 to control a radio access procedure and to perform a media access control function.

The radio network controller 122 broadcasts a cell broadcast service message or system information including interworking information for the broadband wireless access system 130.

SGSN 123 supports the mobility management of the terminal for the GPRS service, the call processing procedure, and session management, authentication and billing functions for handling the transmission and reception of packet data. It also has a routing processing function of packet data.

The GGSN 124 is a serving node of an Internet Protocol (IP) -based packet network that provides a high speed packet data service for GPRS data service. The GGSN 124 manages a session for packet data service and processes packet data routing. It provides interface for connecting WDCMA network and Internet network. HSS 125 manages subscriber information and service status.

The broadband wireless access system 130 includes a base station (BS) 132 and an access router (AR) 134.

The base station 132 transmits and receives data to and from the mobile station 100 through a wireless channel, and performs a physical layer protocol (PHY) that performs radio frequency, intermediate frequency, and baseband processing functions and media access control for the same. (Medium Access Control: MAC) is operated, and performs the access control function of the wireless section in conjunction with the mobile terminal (100).

The access router 134 interoperates with the base station 132 and the public data network 140, and performs an external agent function of the mobile internet protocol to support mobility of the dual terminal.

The public data network 140 provides data communication services to the access router 134 and the GGSN 124.

The IAHC 150 collects network information of the heterogeneous access system from the public data network 140 and transmits it to the general purpose mobile communication system 120 and the broadband wireless access system 130.

2 illustrates an example of overlapping cell arrangement between a mobile communication system and a broadband wireless access system.

The universal mobile communication system 120 is arranged nationwide to provide services, and the broadband wireless access system 130 is provided to provide local services. The cell of the general purpose mobile communication system 120 has a form 200 of a macro cell capable of serving a wider range.

The cell of the broadband wireless access system 130 is in the form of a micro cell 210 that is smaller than the cell of the universal mobile communication system 120. As described above, the service area of the broadband wireless access system 130 is narrow and limited. Therefore, the service area of the wideband wireless access system 130 periodically accesses the wireless access for the broadband wireless access system 130 in order to find the base station 132 of the broadband wireless access system 130 to which the mobile terminal 100 can connect. It takes a lot of time and power to activate the module.

On the other hand, in the universal mobile communication system 120, even if the mobile terminal 100 is in an idle state, the mobile terminal 100 can continuously receive broadcast information of the network. Accordingly, the universal mobile communication system 120 efficiently transmits the location of the broadband wireless access system 130, which is the cell where the mobile terminal 100 is located, to the mobile terminal 100 by using broadcast information. ) To determine the location and minimize the power consumption of the mobile terminal (100).

FIG. 3 is a diagram illustrating a network structure for a cell broadcast center presented by 3GPP TS 23.041.

Hereinafter, description of the same components will be omitted with reference to FIG. 1.

The first method of broadcasting the relevant information of the broadband wireless access system 130 interworking according to the embodiment of the present invention to the mobile terminal 100 is to use a cell broadcasting service.

The universal mobile communication system 120 provides a cell broadcasting service for broadcasting data to all mobile terminals 100 in a specific cell.

The cell broadcast center 300 generates a broadcasting message including channel information about the interworking broadband wireless access system 130 included in a specific cell and calls a UMTS Radio Access Network (UTRAN) of the corresponding cell. Send it out periodically. The message sent to the cell broadcast service is generated by the cell broadcast center 300 which is connected to a Radio Network Controller (RNC) 122 in the UTRAN via an interface called IuBC. The cell broadcast center 300 transmits a broadcasting message to the radio network controller 122 using an interface called IuBC.

FIG. 4 is a diagram illustrating an embodiment of the network structure shown in FIG. 3 extended to an IAHC interworking network structure according to an embodiment of the present invention.

4 illustrates an interworking structure with the IAHC 150 shown in FIG. 1 to transmit system information for interworking between the universal mobile communication system 120 and the broadband wireless access system 130. That is, when there is a broadband wireless access system 130 that can interoperate, the information related to the broadband wireless access system 130 is collected by the IAHC 150 and the collected information is transmitted from the cell broadcast center 300 and the IAHC 150. By transmitting through the interface between the cell broadcast center 300 to broadcast the mobile terminal 100 recognizes the existence of a broadband wireless access system 130 that can be connected.

FIG. 5 is a diagram illustrating a protocol message exchange procedure for a cell broadcast service in the network structure for the CBS shown in FIG.

The cell broadcast center 300 generates a write-replace message and transmits the write-replace message to the wireless network controller 122. Here, the write-replace message is a message transmitted from the cell broadcast center 300 to the radio network controller 122, and is used to transmit a new cell broadcast service message or replace a cell broadcast service message previously transmitted. .

When the wireless network controller 122 receives the write-replace message from the cell broadcast center 300, the wireless network controller 122 generates a report success message and transmits the report-success message to the cell broadcast center 300. Here, the Report-Success message is used as a response message of the Write-Replace message.

When the wireless network controller 122 receives the Write-Replace message from the cell broadcast center 300, the wireless network controller 122 generates an SMS BROADCAST COMMAND message for transmission of the cell broadcast service message and transmits the message to the dual terminal.

FIG. 6 is a diagram illustrating a protocol message exchange procedure for transmitting broadband wireless access system information in conjunction with IAHC according to an embodiment of the present invention in the network structure shown in FIG. 5.

The IAHC 150 generates an Inter-AS Info Request message and transmits it to the cell broadcast center 300. Here, the Inter-AS Info Request message is used to transmit the information of the interworking broadband wireless access system 130 collected by the IAHC 150 and the cell information of the corresponding system to the cell broadcast center 300.

When the cell broadcast center 300 receives the Inter-AS Info Request message from the IAHC 150, the cell broadcast center 300 generates an Inter-AS Info Response message and transmits the generated Inter-AS Info Response message to the IAHC 150. Here, the Inter-AS Info Response message is used as a response message of the Inter-AS Info Request message.

When receiving the Inter-AS Info Request message, the cell broadcast center 300 generates a Write-Replace message and transmits the message to the wireless network controller 122. Subsequently, when the wireless network controller 122 receives the write-replace message from the cell broadcast center 300, the wireless network controller 122 generates a report success message and transmits the report-success message to the cell broadcast center 300.

 When the wireless network controller 122 receives the Write-Replace message from the cell broadcast center 300, the wireless network controller 122 generates an SMS BROADCAST COMMAND message for transmission of the cell broadcast service message and transmits the message to the dual terminal.

A second method of broadcasting the information of the interlocking broadband wireless access system 130 to the mobile terminal 100 according to an embodiment of the present invention is a system information block (hereinafter referred to as System Information Block) periodically broadcasted by the wireless network controller 122. Called a 'SIB').

The universal mobile communication system 120 uses a primary-common control physical channel (P-CCPCH) and a secondary-common control physical channel (S-CCPCH) to transmit common information such as a cell configuration required to provide a communication service. do. The P-CCPCH is used for transmission of a system information block (SIB) related to the cell to the mobile terminal 100 entering a new cell by cell selection. The mobile terminal 100 having no dedicated data transmission channel uses the P-CCPCH to receive a service from specific cell information.

FIG. 7 illustrates a message exchange procedure for a system information transmission procedure presented in 3GPP TS 25.331.

Currently, the 3GPP standard defines 18 blocks for SIB information. In particular, SIB 11 or SIB 12 is used to transmit information of a cell adjacent to the corresponding cell.

In addition, SIB 11 and SIB 12 includes measurement information and cell information of heterogeneous radio access technology (RAT).

The current standard describes only information on heterogeneous radio access technologies such as Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA) 2000. Therefore, in the present invention, the SIB periodically broadcasted by the radio network controller 122 is described. The cell information and system information of the broadband wireless access system 130 are included in the 11 and SIB 12 so that the mobile terminal 100 recognizes the existence of the broadband wireless access system 130 that can be connected.

The radio network controller 122 periodically broadcasts system information including cell information and system information of the broadband wireless access system 130 to the mobile terminal 100.

Hereinafter, an operation procedure and a handover procedure for transmitting interworking information between the universal mobile communication system 120 and the broadband wireless access system 130 will be described. All operation procedures described below are in a state in which the UMTS cell 1 and the BWA cell 1 shown in FIG. 2 overlap each other, and the system from the universal mobile communication system 120 to the broadband wireless access system 130 is provided. Handover is performed.

8 is a message flow diagram illustrating an operation procedure with a broadband wireless access system by transmitting information of a broadband wireless access system to a mobile terminal in an idle state using a cell broadcast service (CBS) according to an embodiment of the present invention.

The idle state of the mobile terminal 100 is a state in which the power of the UMTS access module is activated in the state in which the initial power is activated or the call or session is terminated (S400).

In this state, the mobile terminal 100 receives the broadcast message provided by the cell broadcast service procedure, and then receives the broadband wireless access system 130 and the cell information provided by the IAHC 150 (S402).

Here, the process of receiving the broadband wireless access system 130 and the cell information in step S402 will be omitted as described in FIG.

The mobile terminal 100 recognizes the presence of the adjacent broadband wireless access system 130 to activate the BWA access module (S404), and uses the received broadband wireless access system 130 and the cell information to access the broadband wireless access system 130. Receive a Downlink Channel Descriptor (DCD) / Uplink Channel Descriptor (UCD) messages that are downlink and uplink channel information (S406).

The mobile terminal 100 verifies the received BWA channel information to determine whether it is accessible to the broadband wireless access system 130 (S408).

The mobile terminal 100 deactivates the access module of the previously activated UMTS when the broadband wireless access system 130 is accessible (S410). Thereafter, the mobile terminal 100 performs a random access procedure on the uplink using the received DCD / UCD message, receives a channel, and then performs a ranging procedure and a registration procedure. (S412). After this series of procedures is performed, the mobile terminal 100 is able to service the broadband wireless access system 130, and performs a session establishment procedure and a session release procedure according to the service request of the mobile terminal 100 ( S414). In step S414, since the terminal in the idle state is connected to the broadband wireless access system 130, the existing session does not exist, and if the service is provided by the user's request, the session setup procedure and the session release procedure are performed. .

The mobile terminal 100 determines whether the current broadband wireless access system 130 can be connected according to the signal strength of the base station 132 received in the downlink, and periodically maintains connection with the broadband wireless access system 130. (S416).

If it is determined in step S416 that the connection between the mobile terminal 100 and the broadband wireless access system 130 is impossible, the mobile terminal 100 releases the registration procedure of the broadband wireless access system 130 (S418). Subsequently, the mobile terminal 100 activates the UMTS access module (S420), and converts the BWA access module into an inactive state (S422).

Then, the mobile terminal 100 receives the broadcast message provided by the cell broadcast service procedure of the newly connected universal mobile communication system (UTRAN 2), and then the broadband wireless access system 130 and the cell information are included in the corresponding information. If present, the procedure is repeated after step S404.

If it is determined in step S416 that the connection between the mobile terminal 100 and the broadband wireless access system 130 is possible, the flow proceeds to step S414.

9 is a message flow diagram illustrating an operation procedure with a broadband wireless access system by transmitting information of a broadband wireless access system to a mobile terminal in a data transmission state using a cell broadcast service (CBS) according to an embodiment of the present invention. .

The data transmission state of the mobile terminal 100 is a state in which the mobile terminal 100 establishes a traffic channel with the UTRAN1 and transmits and receives a data packet, and the power of the UMTS access module is activated (S500). After receiving the broadcast message provided by the cell broadcast service procedure, the mobile terminal 100 receives the broadband wireless access system 130 and the cell information provided by the IAHC 150 (S502). The mobile terminal 100 recognizes the presence of the adjacent broadband wireless access system 130 and activates the BWA access module (S504).

The mobile terminal 100 uses downlink and uplink channel information of the downlink and uplink channels of the wideband wireless access system 130 and the uplink channel descriptor (UCD) using the received broadband wireless access system 130 and cell information. ) A message is received (S506). Subsequently, the mobile terminal 100 verifies the received BWA channel information to determine whether the mobile terminal 100 can access the broadband wireless access system 130 (S508).

If it is determined in step S508 that the mobile station 100 can access the broadband wireless access system 130, the mobile station 100 allocates a channel by performing a random access procedure on the uplink using the received DCD / UCD message. After receiving, a ranging procedure and a registration procedure are performed (S510).

If it is determined in step S508 that the mobile station 100 cannot connect to the broadband wireless access system 130, the mobile terminal 100 proceeds to step S504.

Subsequently, the mobile terminal 100 determines whether the current broadband wireless access system 130 can be connected according to the signal strength of the base station 132 received in downlink, and maintains connection with the broadband wireless access system 130 periodically. Determine (S512).

When the connection between the mobile terminal 100 and the broadband wireless access system 130 is possible in step S512, the mobile terminal 100 is able to service between the broadband wireless access system 130 and the service request of the mobile terminal 100. A session establishment procedure, user traffic transmission and reception procedure are performed according to step S516.

If the connection between the mobile terminal 100 and the broadband wireless access system 130 is impossible in step S512, the mobile terminal 100 converts the BWA connection module to the inactive state (S514), and proceeds to step S502.

Then, the mobile terminal 100 receives the broadcast message provided by the cell broadcast service procedure of the newly connected radio access network (UTRAN 2), and then the broadband wireless access system 130 and the cell information exist in the corresponding information. If so, the procedure after step S504 is repeated.

If an error occurs in the ranging procedure and the registration procedure with the base station 132, the mobile terminal 100 cannot hand over to the broadband wireless access system 130, and uses the existing universal mobile communication system 120. To perform the service.

In the embodiment of the present invention, the mobile station 100 in the data connected mode is established during the handover by setting up a session or call by performing an initialization and registration procedure of the broadband wireless access system 130 before deactivating the UMTS access module. There is an advantage to reduce the delay.

FIG. 10 is a message flow diagram illustrating an operation procedure with a broadband wireless access system by transmitting information of a broadband wireless access system to an idle mobile station using an SIB broadcast procedure according to an embodiment of the present invention.

Hereinafter, description of the same procedure will be omitted and only other features will be described with reference to FIG. 8.

The idle state of the mobile terminal 100 is a state in which the power of the UMTS access module is activated in the state in which the initial power is activated or the call or session is terminated.

The IAHC 150 generates an Inter-AS Info Request message for transmitting interworking system information and transmits it to UTRAN1 (S600). When the UTRAN1 receives the Inter-AS Info Request message from the IAHC 150, the UTRAN1 generates an Inter-AS Info Response message as a response message and transmits the Inter-AS Info Response message to the IAHC 150 (S602). Subsequently, the UTRAN1 periodically broadcasts system information including cell information and system information of the broadband wireless access system 130 to the mobile terminal 100 (S604).

11 is a message flow diagram illustrating an operation procedure with a broadband wireless access system for transmitting information of a broadband wireless access system to a mobile terminal in a data transmission state using an SIB broadcast procedure according to an embodiment of the present invention.

Hereinafter, description of the same procedure will be omitted and only other features will be described with reference to FIG. 9.

The data transmission state of the mobile terminal 100 is a state in which the mobile terminal 100 establishes a traffic channel with the UTRAN1 and transmits and receives data packets.

The IAHC 150 generates an Inter-AS Info Request message for transmitting interworking system information and transmits it to UTRAN1 (S700). When the UTRAN1 receives the Inter-AS Info Request message from the IAHC 150, the UTRAN1 generates an Inter-AS Info Response message as a response message and transmits the Inter-AS Info Response message to the IAHC 150 (S702). Subsequently, the UTRAN1 periodically broadcasts system information including cell information and system information of the broadband wireless access system 130 to the mobile terminal 100 (S704).

12 is a diagram illustrating information related to a broadband wireless access system included in broadcast information transmitted to a mobile communication system according to an embodiment of the present invention.

In the IAHC 150, a cell ID, a physical layer type, a downlink center frequency, and an uplink center frequency are used to transmit initial access information and cell information of an interworking broadband wireless access system 130. Broadband wireless access system related information such as uplink center frequency (Uplink Center Frequency) information is transmitted to the cell broadcast center 300 or the radio network controller 122 of the UTRAN. Here, the cell ID is a cell identifier of the broadband wireless access system 130, and the physical layer protocol type defines a physical layer type of the broadband wireless access system 130 currently being serviced.

This broadband wireless access system related information serves to reduce the delay of the initial radio access procedure of the terminal.

The above-described information related to the broadband wireless access system is transmitted by configuring a unique message when using the cell broadcast service (CBS), and when transmitting to the mobile station 100 using the system information block (SIB). SIB 11 and SIB 12 Add an information object such as

13 is a block diagram schematically showing the internal configuration of the IAHC according to an embodiment of the present invention.

The IAHC 150 according to an embodiment of the present invention includes a UMTS interface unit 152, a BWA interface unit 154, a handover management unit 156, and an access system location information unit 158. .

The UMTS interface unit 152 is an interface for broadcasting on the universal mobile communication system 120. When the cell broadcasting service is used, the UMTS interface unit 152 performs a logical interface function with the cell broadcasting center 300. In addition, the UMTS interface unit 152 performs a logical interface function with a radio access network (UTRAN) when using a system information block (SIB) service.

The BWA interface unit 154 performs a logical interface function with the base station 132 of the broadband wireless access system 130.

The handover manager 156 generates the broadband wireless access system 130 related information shown in FIG. 12 for the cell broadcast service or the system information block (SIB) service in association with the access system location storage unit 158 to generate the UMTS interface unit. To 152.

The handover manager 156 collects system information, cell information, and the like of the BWA base station 132 linked through the BWA interface unit 154.

The access system location storage unit 158 performs a database function for storing the information on the currently deployed cell, the broadband wireless access system 130 related information and the cell information collected by the handover manager 156.

14 is a block diagram schematically illustrating an internal configuration of a mobile terminal according to an embodiment of the present invention.

The mobile terminal 100 according to the embodiment of the present invention uses the signal receiving unit 101, the BWA connection unit 102, the UMTS connection unit 103, the session setting unit 104, the ranging processing unit 105, and the control unit 106. Include.

The signal receiver 101 receives a cell broadcast service message or system information including interworking information from the radio network controller 122 of the UTRAN. Here, the interworking information is system related information for the broadband wireless access system 130 and includes at least one of a cell ID, a physical layer type, downlink center frequency information, and uplink center frequency information.

The signal receiver 101 receives channel information on downlink and uplink of the broadband wireless access system 130.

The BWA connection unit 102 performs an activation / deactivation function of the broadband wireless access module and performs an interface function to connect with the broadband wireless access system 130.

The UMTS connection unit 103 performs an activation / deactivation function of the mobile communication access module and functions as an interface for connecting with the universal mobile communication system 120.

The session establishment unit 104 performs procedures such as session establishment, data traffic, and session release with the broadband wireless access system 130.

The ranging processor 105 performs a random access procedure on the uplink using the channel information received from the signal receiver 101 to allocate a channel, and then performs a ranging procedure and a registration procedure with the broadband wireless access system 130. Do this.

The controller 106 determines whether it is possible to connect to the broadband wireless access system 130 using the channel information received from the signal receiver 101.

The controller 106 analyzes the received cell broadcast service message or system information and performs communication connection with the universal mobile communication system 120 or the broadband wireless access system 130.

The controller 106 determines whether the broadband wireless access system 130 can be connected according to the signal strength of the base station 132 received in the downlink.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the above configuration, the present invention can be expected to minimize the power consumption of the mobile terminal and to efficiently provide the cell information and system information of the BWA system.

According to the present invention, an initial radio access procedure and a signaling procedure for a service of a BWA system may be performed during operation of a mobile communication system during handover from a mobile communication system to a BWA system, and thus an overall handover delay may be reduced. Can be.

Claims (19)

delete In the method for transmitting the interworking information between the mobile communication system and the broadband wireless access system, (a) receiving a cell broadcast service message or system information including interworking information of the broadband wireless access system; And (b) establishing a communication connection between the mobile terminal and the broadband wireless access system based on the cell broadcast service message or the system information; When the mobile terminal is in an idle state, step (b) may include: (b1-1) activating a broadband wireless access module and receiving channel information on downlink and uplink of the broadband wireless access system; (b2-1) converting an activated mobile communication system module into an inactive state when the mobile terminal can access the broadband wireless access system using the received channel information; (b3-1) performing a ranging procedure and registration with the broadband wireless access system using the received channel information; And (b4-1) accessing the broadband wireless access system by performing a session establishment procedure and a session release procedure with the broadband wireless access system; Transmission method comprising a. The method of claim 2, Canceling a registration procedure with the broadband wireless access system when it is impossible to maintain a connection to the broadband wireless access system; And Activating the mobile communication system module in the deactivated state and converting the activated broadband wireless access module to the deactivated state; Transmission method further comprising. The method of claim 2, When the mobile terminal is in a data connection state, step (b) may include: (b1-2) activating a broadband wireless access module and receiving channel information on downlink and uplink of the broadband wireless access system; And (b2-2) accessing the broadband wireless access system by performing a ranging procedure and a registration procedure with the broadband wireless access system when it is possible to access the broadband wireless access system using the received channel information. Transmission method comprising a. The method of claim 4, wherein If the mobile terminal is in a data connection state and maintains connection with the broadband wireless access system, the method further includes performing a session establishment procedure, user traffic transmission, and session release procedure according to a service request of the mobile terminal. Way. The method of claim 4, wherein Converting the activated broadband radio access module into an inactive state when the mobile terminal is in a data connection state and maintains connection with the broadband radio access system. The method according to any one of claims 2 to 6, The mobile terminal further comprises the step of periodically determining to maintain the connection with the broadband wireless access system according to the signal strength of the base station received in the downlink. delete delete delete In a system for transmitting interworking information between a mobile communication system and a broadband wireless access system, An inter access system handover controller (IAHC) for collecting and transmitting network information of a heterogeneous access system from an external network; A cell broadcast center for generating and broadcasting a cell broadcast service message including interworking information of the broadband wireless access system under the control of the inter access system handover controller; And A radio access network that generates system information including the cell broadcast service message or the interworking information and broadcasts it to a mobile terminal under the control of the cell broadcast center or the inter-access system handover controller. Transmission system comprising a. The method of claim 11, wherein The inter access system handover controller, An interface unit for performing a logical interface function with the mobile communication system or the broadband wireless access system; A handover manager that receives interworking information of the broadband wireless access system from the interface unit and performs a cell broadcast service or a system information block service; And Location storage unit for periodically storing the interworking information of the broadband wireless access system collected by the handover management unit Transmission system comprising a. The method of claim 11, wherein The interworking information is composed of an independent message when using a cell broadcast service, and when using a system information block, an information entity is added to the system information and transmitted to the mobile terminal. The method according to any one of claims 11 to 13, The interworking information includes any one or more of a cell ID, a physical layer type, downlink center frequency information, and uplink center frequency information. The method of claim 11, wherein The mobile station scans the broadband wireless access system based on the cell broadcast service message or the system information and establishes a connection with the broadband wireless access system. The method of claim 11, wherein The mobile terminal performs a mobile communication service using a mobile communication system immediately connected when an error occurs while performing a ranging procedure and a registration procedure with the broadband wireless access system. delete In the method for transmitting the interworking information between the mobile communication system and the broadband wireless access system, (a) generating and transmitting a cell broadcast service message or system information including interworking information of the broadband wireless access system to a mobile terminal; And (b) receiving a control message from the mobile terminal and establishing a communication connection with the mobile terminal, When the mobile terminal is in an idle state, step (b) may include: Generating channel information on downlink and uplink of the broadband wireless access system and transmitting the generated channel information to the mobile station; Performing a ranging procedure and registration at the request of the mobile terminal; And Performing a session establishment procedure and a session release procedure between the mobile terminal and the broadband wireless access system to access the mobile terminal; Transmission method comprising a. The method of claim 18, When the mobile terminal is in a data connection state, step (b) may include: Generating and transmitting channel information on downlink and uplink of the broadband wireless access system; Accessing the mobile terminal by performing a ranging procedure and a registration procedure at the request of the mobile terminal; And Performing a session establishment procedure, user traffic transmission / reception, and session release procedure according to the service request of the mobile terminal Transmission method comprising a.

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