KR100378317B1 - Packet based indoor wireless communication network system - Google Patents

Abstract

PURPOSE: A packet-based private radio communication network system is provided to interwork with an existing PLMN(Public Land Mobile Network) and to embody the in-house call between mobile terminals using a packet-based network. CONSTITUTION: A packet-based private wireless communication network system consists of a BTS(Base station Transceiver Subsystem)/RNC(Radio Network Controller)(110), call agents(121,122), and a CCM(Call Control Manager)(130). The BTS/RNC(110) executes the radio channel interface function between mobile terminals and a packet-based network(100). The call agents(121,122), connected with a plurality of BTS/RNCs(110) through the medium of an ethernet(10), execute overall call processing control, including call setup, call release, and location registration, in the packet network(100). The CCM(130), interworking with the call agents(121,122) as well as a PLMN MSC(Mobile Switching Center)(210) and a PLMN HLR(Home Location Register)(220) in a PLMN(200), manages all the agents(121,122). Based on the location information of registered mobile terminals, the CCM(130) executes the call incoming/outgoing processing between the PLMN(200) and the packet network(100) and the call exchange processing between the call agents(121,122) through the ethernet(10).

Description

Packet based indoor wireless communication network system

The present invention relates to a packet-based premises wireless communication network system, and more particularly, to implement premises calls between mobile terminals using a packet-based network and to interoperate with existing global mobile communication networks. A wireless communication network system in the premises.

In general, in order to provide wireless premises telephone service, a wireless premises telephone switchboard must be installed independently in the premises, and the wireless premises telephone exchange installed in the premises is connected to a global mobile communication network (hereinafter referred to as a PLMN network). It should be connected by a dedicated line.

In this way, the wireless telephone switchboard installed in the premises handled calls generated between the premises and interworked with the PLMN network for calls interworking with the PLMN network, but all of them were made using the circuit method. The resource limitation, the increase of the line installation cost and the difficulty of maintenance have occurred.

In addition, as the volume of communication is gradually increased and the call of data is increased more than voice, a packet exchange method capable of voice / data communication has been in the spotlight. There is a need for consideration in the construction of the premises communication network for providing the wireless premises telephone service.

The present invention has been made in consideration of the technical background as described above and solves the problems of the conventional on-premises voice communication circuit switching method. The object of the present invention is to implement an on-premises call between mobile terminals using a packet-based network. It is an object of the present invention to provide a packet-based wireless communication network system that can be interworked with an existing global mobile communication network.

1 is a block diagram of a packet-based on-premises wireless communication network system according to an embodiment of the present invention.

2 is a block diagram of a packet-based on-premises wireless communication network system according to another embodiment of the present invention.

3 is a flowchart illustrating the operation of the present invention when the subscriber's mobile terminal located in the global communication network roams into the premises packet network area.

4 is a flowchart illustrating an operation of the present invention for the case where the mobile terminal located in the premises packet network moves to the global communication network and location deletion occurs.

5 shows a call processing flowchart of the present invention for a case where a mobile terminal located in a premises packet network makes a call to an arbitrary mobile terminal located in a global communication network.

6 shows a call processing flowchart of the present invention for a case where a call is made between mobile terminals located in a premises packet network.

7 shows a call processing flowchart of the present invention for the case where a call is requested from a global communication network to an arbitrary mobile terminal located in an premises packet network.

※ Explanation of code for main part of drawing

10: Ethernet 20,21: mobile terminal

100: premises packet network 110: base station controller / base station

120,121,122: call agent 130: call control manager

200: global communication network 210: switchboard

220: home location register

In order to achieve the above object, a packet-based on-premises wireless communication network system according to the present invention includes an end device for wireless communication with a mobile terminal; Local communication with at least one terminal device via a packet network, based on the location registration of the visitor mobile terminal and accordingly the location information of the mobile terminal previously registered, the local outgoing / incoming call processing through the packet network, the A call agent (or premises location registration / switching device) that performs outgoing call processing from a packet network to an external global communication network and an incoming call processing from the global communication network to the packet network; And interworking with the global communication network and / or one or more of the call agents, based on location registration of the corresponding visitor mobile terminal for each call agent and thus location information of the previously registered mobile terminal. And a call control manager (or public network interworking exchange device) that performs call exchange / process relay processing between the communication network and the packet network and call exchange processing between the call agents.

The call agent and the call control manager are interconnected via, for example, the packet network; As another example, each of the call control managers may be remotely connected to each other through an internet based network, a frame relay based network, an X.25 based network, or a dedicated line, and the call control manager may interwork with an exchange and a home location register in the global communication network. Connection is installed.

When the call control manager performs call in / out relay processing between the global communication network and the packet network and call exchange processing between the call agents, the call control manager is based on the telephone number as the location information previously registered for each call agent. Routing to an agent, and using the SIP (Session Initiation Protocol (SIP) (call control protocol used in 3GPP or 3GPP2 as a standard defined in IETF RFC2543) between the call control manager and the call agent It is characterized in that by interlocking.

The call control manager interworks with SS.7 with the global communication network and relays with the packet network based on an Internet Protocol (IP) when relaying incoming / outgoing signaling for call in / out relay processing between the global communication network and the packet network. And interworking between the SS.7 and the IP signaling signal so that the call agent interworks with the SIP phone via the packet network to perform call processing between the SIP phones. It is characterized by.

Therefore, in the existing SS.7 network, each node is divided into signal points and the number of signal points is limited because the resources are limited resources. However, in the global communication network, the call control manager becomes the end of SS.7. Since a plurality of call agents (MIN) are viewed from the call control manager and routed to the corresponding call agent through the packet network, one call agent that manages the plurality of call agents without allocating signaling points to each of the plurality of call agents. You only need to assign signal points to the call control manager.

Hereinafter, a packet-based premises wireless communication network system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a packet-based premises wireless communication network system according to an embodiment of the present invention, as shown in the figure, a wireless channel interface function between a mobile terminal and a packet-based network (hereinafter abbreviated as packet network). A base station (BTS) and a base station controller (RNC) (hereinafter abbreviated as BTS / RNC) 110 as a network terminating device for performing the following operations; Connect and communicate with a plurality of the BTS / RNC 110 via the Ethernet (10) constituting the packet network, and the call establishment, release and call of the mobile terminal in the service area by the packet network 100 By performing overall call processing control in the packet network including location registration, based on the location registration of the visitor mobile terminal and the location information of the previously registered mobile terminal, local call / incoming call processing through the packet network, Outgoing call processing from the packet network 100 to an external global communication network (PLMN) 200, and a call agent (CA) performing an incoming call process consisting of the packet network 100 in the global communication network 200. (CA # 1, ..., CA # N) (121, 122: 120); And all call agents 120 by interworking with a switch (PLMN MSC) 210 and a home location register (PLMN HLR) 220 of the global communication network 200 and a plurality of call agents 120. By managing, the location information of the mobile terminals registered by visiting the plurality of call agents 120 are classified and stored by call agents 121.122, respectively, and then registered and stored according to the location information of the previously registered mobile terminals. Call control manager (CCM) for performing call in / out relay processing between the global communication network 200 and the packet network 100 and call exchange processing between the call agents 121 and 122 through the Ethernet 10. 130).

That is, the packet-based premises wireless communication network system according to an embodiment of the present invention is composed of the RNC / BTS (110), the call agent 120 and the call control manager 130, each of the devices (110, 120, 130) ) Are all interconnected via the Ethernet (10) as a bar, each function will be described in more detail as follows.

First, the functions performed by the call control manager 130 will be described in detail.

The call control manager 130 performs a management function for all the subscribers of the packet network 100, that is, the packet-based premises wireless communication network system according to the present invention, and is cascaded via the Ethernet 10. It has a profile for every call agent 120. Accordingly, as described above, when performing call processing between the packet network 100 and the global communication network 200 or call processing between the call agent 120 in the packet network 100, the telephone number (MIN :) of the subscriber mobile terminal is performed. Mobile Identification Number) can determine which call agents 121 and 122 belong to the corresponding terminating mobile terminal.

In addition, the call control manager 130 performs a call processing function that is outgoing / incoming from / to the global communication network 200 to / from the packet network 100, wherein basic call processing and various additional service processing are performed. Performs a function, and performs a number translation function for outgoing and incoming calls, a handoff function with the public communication network 200, and a voice trunk control management function connected with the public communication network 200. do.

In addition, the call control manager 130 performs a signaling gateway function between the packet network 100 and the global communication network 200, wherein the call control manager 130 performs an SS with the switch 210 of the global communication network 200. . And interworking with the call agent 120 of the packet network 100 based on Internet Protocol (IP), performing a transmission conversion function (SS.7↔IP) between SS.7 and IP, and The MIN number is viewed from a mobile application protocol (Mobile Application: MAP) message from the global communication network 200 and performs a function of routing to a corresponding call agent 120.

In addition, the call control manager 130 performs a media gateway control function and a billing function, and includes a billing data generation function for a call originating from the packet network 100 to the global communication network 200. It performs the function of transmitting the billing data to the billing center, and performs the SIP function (SIP: Session Initiation Protocol) gateway to interwork with the call agent 120 based on the SIP.

Next, the function performed by the call agent 120 will be described in detail.

The call agent 120 roams into a service area of its call agent (CA # 1, .., or CA # N) 121, .., or 122 in the packet network 100 of the corresponding subscriber. Profile management function for a mobile terminal, a SIP gateway function for performing interworking call processing with a SIP phone and interworking with the call control manager 130 via the Ethernet 10, in the packet network 100 Call processing and supplementary service processing functions for calls made between subscribers located, and outgoing calls from the packet network 100 to the global communication network 200 via the Ethernet 10 via the call control manager 130 and SIP Function to process outgoing calls based on interworking, SIP-based interworking with the call control manager 130 via the Ethernet 10 for incoming calls made from the global communication network 200 to the packet network 100. doing Function, Private Automatic Branch Exchange (PABX) interworking call processing function, interworking function with the one or more relevant base station controller (RNC) 110, interworking based on Unified Messaging Service (UMS) and SIP protocol And UMS Outdialing processing.

FIG. 2 is a block diagram of a packet-based premises wireless communication network system according to another embodiment of the present invention. The call control manager 130 and the call agent 120 of FIG. Is remotely connected to each other via one of the Internet-based network, Frame Relay-based network, X.25-based network or leased line 300, the call control manager 130 is the A short-range connection is provided between the exchanger 210 and the home location register 220.

That is, the physical location of the call control manager 130 that is in charge of the interworking function between the packet network 100 and the global communication network 200 does not belong to the packet network 100 as shown in FIG. It shows the case where there is 200. In this case, the call agent 120 processes all the calls generated in the packet network 100, and when the call requesting a call with the terminal belonging to the global communication network 200 occurs in the packet network 100, The call is generated by the call agent 120 belonging to the packet network 100 to request the call through the separate network 300 to the call control manager 130 within the global communication network 200.

Therefore, the existing wireless premises telephone system had to use a dedicated line to interwork with a global communication network, but when using the structure as shown in FIG. Can be reduced.

Next, the operation of the present invention will be described with reference to FIGS. 3 to 7.

3 is a flowchart illustrating the operation of the present invention when the mobile terminal of the subscriber located in the global communication network 200 roams into the packet network 100 area.

First, when the mobile terminal (MS) 20 entering the packet network 100 transmits a location registration request message to the RNC / BTS 110 (S301), the RNC 110 sends the call agent (CA) ( In step S302, the location registration message received from the mobile terminal 20 is transmitted.

The call agent 120 transmits a location registration message based on an IP protocol to the call control manager 130 after the location registration of the corresponding mobile terminal 20 via the Ethernet 10 (S303). The call control manager 130 registers the location of the mobile terminal 20 in association with the call agent 120 based on the received location registration message, and then registers the received location registration message in SS.7. The mobile station 20 converts the protocol message into a home location register (PLMN HLR) 220 of the global communication network 200, which was immediately transmitted (S304).

The home location register 220 transmits a command to the corresponding switch (PLMN-MSC) 210, to which the mobile terminal 20 immediately belongs, to delete information on the terminal 20 (S305). The switch 210 transmits the response to the home location register 220 after executing the command (S306).

The home location register 220 updates and registers the location of the mobile terminal 20 in association with the call control manager 130 and transmits a location registration response message to the call control manager 130 (S307). ).

The call control manager 130 notifies the call agent 120 that the location registration of the mobile terminal 20 is normally performed (S308), and finally, the call agent 120 informs the RNC 110. Informs that the location registration has been made normally (S309).

4 is a flowchart illustrating the operation of the present invention for the case where the mobile terminal 20 located in the packet network 100 moves to the global communication network 200 and the location deletion occurs.

First, when the mobile terminal 20 moving to the global communication network 200 requests a location registration to the switch 210 through the corresponding base station / control station PLMN BSC / BTS, the switch 210 accordingly Location registration is requested to the home location register 220 (S401).

After registering the location according to the request, the home location register 220 transmits a location deletion request message based on the SS.7 protocol to the call control manager 130 (S402).

The call control manager 130 deletes the location information of the mobile terminal 20 on the basis of the location deletion request message, and also views the phone number MIN of the mobile terminal 20 to view the corresponding mobile terminal 20. ) Determines which call agent 120 has been previously located, and then transmits a location deletion request message based on the IP protocol to the determined call agent 120 (S403). After deleting the location information of the mobile terminal 20 and transmits a location deletion response message based on the IP protocol to the call control manager (130) (S404).

When the call control manager 130 converts the received IP-based location deletion response message into a location deletion response message based on the SS.7 protocol and transmits the message to the home location register 220 of the global communication network 200 ( S405), the home location register 220 informs the switch 210 that location registration has been successfully performed (S406).

5 shows a call processing flowchart of the present invention for the case where the mobile terminal 20 located in the packet network 100 makes a call to an arbitrary mobile terminal located in the global communication network 200. Referring to FIG.

First, when the mobile terminal 20 makes a call origination request to the RNC / BTS 110 (S501), the RNC 110 makes a call request from the corresponding mobile terminal 20 to the call agent 120. Notify that there is (S502).

The call agent 120 determines that the called mobile terminal is not located in the area of its own 120 in the packet network 100 based on the registered location information, and sends a SIP-based INVITE message. A call processing request is made to the call control manager 130 by using the call processing manager 130 (S503).

Since the call control manager 130 has previously registered location information for all call agents 120, it is determined that the called mobile terminal is not located in the packet network 100 based on the previously registered location information. The mobile terminal 20 requests the location of the incoming mobile terminal 20 to the home location register 220 of the global communication network 200 (S504).

The home location register 220 informs the call control manager 130 of the destination mobile terminal according to the request (S505), and the call control manager 130 sends the SIP to the call agent 120. Using the 100 Trying message, it is informed that the SIP invite message received in step S503 is processed (S506).

The call agent 120 transmits a response message to the call request in step S502 to the RNC 110 (S507), and the call control manager 130 is located at the destination mobile terminal 20. It requests a corresponding switch 210 in the global communication network 200 to connect a call using an ISUP message (IAM) of the ISUP (S508).

The switch 210 notifies the call control manager 130 that the IAM message has been successfully received in an ISUP Address Complete Message (ACM) message (S509), and then ISUP ACM (ANM: Answer). Message) informs the call control manager 130 that the called mobile terminal has received the call in a message (S510).

The call control manager 130 notifies the call agent 120 that the called mobile terminal has answered the call using the 200 OK message of the SIP (S511), and the call agent 120 The RNC 110 is notified of the call requested by the called mobile terminal (S512), and the RNC 110 sends the call to the calling mobile terminal 20 to the call requested by the called terminal. When notifying that the answer is made, a call is finally made between the calling mobile terminal 20 and the called mobile terminal (S514).

6 shows a call processing flowchart of the present invention in the case where a call is made between mobile terminals 20 and 21 located in the packet network 100. Referring to FIG.

First, when the calling mobile terminal 20 makes a call request to the RNC / BTS 110 (S601), the RNC 110 sends a call request from the calling mobile terminal 20 to the call agent 120. Notify that there is (S602).

The call agent 120 determines that the corresponding destination mobile terminal 21 is located within the area of the self 120 in the packet network 100 based on the pre-registered location information, and informs the RNC 110 of the call agent 120. Paging for the incoming mobile terminal 21 is requested (S603). The RNC / BTS 110 attempts paging for the called mobile terminal 21 (S604), and correspondingly, the called mobile terminal 21 responds to the paging to the RNC / BTS 110. (S605).

The RNC 110 notifies the call agent 120 that the called mobile terminal 21 has responded to the paging (S606), and the call agent 120 informs the RNC 110 to the called mobile terminal. Notifies that 21 has notified the originating mobile terminal 20 that it has responded (S607).

When the RNC / BTS 110 notifies the originating mobile terminal 20 that the called mobile terminal 21 has responded to the originating request call (S608), the RNC / BTS 110 and the incoming mobile terminal 20 finally carry out the incoming call. A call is made between the terminals 21.

7 shows a call processing flowchart of the present invention for the case where a call is requested from the global communication network 200 to any mobile terminal 20 located in the packet network 100.

First, the switch 210 of the global communication network 200 transmits an IAM message of an ISUP to the call control manager 130 according to an outgoing call to a corresponding calling mobile terminal located in the global communication network 200. 7 transmission based on the protocol (S701). The call control manager 130 transmits an ACM message indicating that the IAM message was successfully received to the exchange 210 (S702).

The call control manager 130 determines the number of call agents 120 to which the called mobile terminal 20 belongs and responds to the call agent 120 through a SIP-INVITE message of the IP network. A call of the called mobile terminal 20 is requested (S703), and accordingly, the call agent 120 uses the SIP 100 Tyring message indicating that the call control manager 130 has successfully received the SIP-INVITE message. (S704).

The call agent 120 requests the RNC 110 to paging the corresponding destination mobile terminal 20 (S705), whereby the RNC / BTS 110 transfers the corresponding incoming call. When the paging is performed to the terminal 20 through the air interface (S706). The called mobile terminal 20 responds to the paging to the RNC / BTS 110 (S707).

The RNC 110 notifies the call agent 120 that the called mobile terminal 20 has responded to the paging (S708), and when the user of the called mobile terminal 20 answers the incoming call, In operation S709, the RNC 110 notifies the call agent 120 that the called mobile terminal 20 has responded.

Accordingly, the call agent 120 informs the call control manager 130 that the incoming mobile terminal 20 has responded to the outgoing call to the call control manager 130 through the SIP-200 OK message (S711), and the call control manager ( 130) informs that the incoming subscriber responds to the switch 210 through an ISUP-ANM message based on the SS.7 protocol (S712), and finally, the mobile subscriber of the calling subscriber belonging to the global communication network 200; And a call is made between the mobile subscriber 20 of the called subscriber in the packet network 100 (S713).

As described in detail above, the packet-based premises wireless communication network system according to the present invention creates the following effects.

First, the line cost is innovatively reduced because the Internet / Frame Relay / X.25 network can be used instead of the dedicated line. Second, it is easy to evolve into a 4G mobile telephone system by interworking between the wireless local area telephone segment and the global communication network (PLMN) of the present invention consisting of packet networks using the SIP protocol. Third, since the SIP protocol is installed in the call control manager and the call agent as the wireless local telephone exchange, it is easy to interwork with other VoIP networks including the SIP phone interworking. Fourth, since the call control manager and the call agent as the wireless telephone exchange of the premises are connected via Ethernet, it is easy to connect with the UMS (full spelling). In addition, in the present invention, the interworking between the global communication network and the packet network is performed by the call control manager, and the intra-area exchange is a function of separating the inter-network interworking and the intra-area exchange so that one or more call agents connected to the call control manager are separated. And trouble management is facilitated.

Claims (6)

An end device for wireless communication with the mobile terminal; Local communication with at least one terminal device via a packet network, based on the location registration of the visitor mobile terminal and accordingly the location information of the mobile terminal previously registered, the local outgoing / incoming call processing through the packet network, the A call agent that performs outgoing call processing from a packet network to an external global communication network and an incoming call processing from the global communication network to the packet network; And Interworking with the global communication network and / or one or more of the call agents, based on the location registration of the visitor mobile terminal for each call agent and accordingly the location information of the previously registered mobile terminal, between the global communication network and the packet network And a call control manager (Call Control Manager) for controlling the call in / out relay process and the call exchange process between the call agent. The method of claim 1, And the call agent and the call control manager are interconnected via the packet network. The method of claim 1, The call agent and the call control manager are remotely connected to each other through one of an internet based network, a frame relay based network, an X.25 based network or a leased line, and the call control manager is connected to a switch and a home location register in the global communication network. Packet-based on-premises wireless communication network system, characterized in that installed in close proximity to each other to interlock. The method of claim 1, When the call control manager performs call in / out relay processing between the global communication network and the packet network and call exchange processing between the call agents, the call control manager is based on the telephone number as the location information previously registered for each call agent. Packet-based on-premises wireless communication network system characterized in that routing to the agent (Routing). The method of claim 1, The call control manager and the call agent is a packet-based wireless communication network system, characterized in that the interworking based on the Session Initiation Protocol (SIP). The method of claim 1, The call control manager interworks with SS.7 with the global communication network and relays with the packet network based on an Internet Protocol (IP) when relaying incoming / outgoing signaling for call in / out relay processing between the global communication network and the packet network. A packet-based premises wireless communication network system characterized in that to perform inter-in / out conversion function between SS.7 and IP signaling signal to interwork.