KR20040041833A - Group calling method in private mobile telecommunication system - Google Patents

Abstract

PURPOSE: A group paging method in a private mobile communication system is provided to page mobile stations by group according to current positions in case that some of mobile stations are moved. CONSTITUTION: When each pBTS(private Base station Transceiver Subsystem) periodically sends information on MSs(Mobile Station) which have been entered into its own service area to a public/private communication service unit(510), the public/private communication service unit stores an area information table provided in a database with each position information of the corresponding MSs(512). When there is a group paging request of MSs by corresponding position(514), the public/private communication service unit receives a paging position and a paging message from an operator(516). The public/private communication service unit transfers the paging message to a corresponding pBTS, and the pBTS transfers the paging message to MSs in a corresponding service area(518).

Description

Group calling method in private mobile telecommunication system

The present invention relates to a private mobile communication system that can provide both public and private mobile communication services, and more particularly, to a group calling method in a private mobile communication system.

In the conventional wired private exchange, since the terminals are connected by wire from the main device and are in a fixed position such as a desk in the office, the private exchange main device designates a group of terminals provided by a specific region, and stores the information about them. You could make group calls by region.

However, recently, due to the development of a private exchange to accommodate a wireless terminal, there are some problems in actually calling a wireless terminal that is not in a fixed position to a predetermined regional group. That is, even though the wireless terminals registered in the same group are not located at the same location, all the terminals registered in the same group belong to one group and have a group call. For example, a company that employs a wireless private exchange would like to group call employees (with wireless terminals) who are currently working in a store on the first floor, but some of the employees in the store on the first floor are temporarily on the other floor. There may be times when you are working, in which case you may temporarily receive unnecessary calls to employees on other floors when you make a group call to an employee on the first floor.

Accordingly, an object of the present invention is to identify the current position of the wireless terminal in the host device in order to solve the problem that the terminals registered in the same group in advance should be called as belonging to one group even if they are not all currently in the same position. The present invention provides a method of calling a group in a private mobile communication system, which enables grouping according to the present invention, so that a group can be rearranged and applied in real time even when a user moves.

In order to achieve the above object, the present invention provides a group calling method in a private mobile communication system, comprising: periodically providing information on a wireless terminal of a corresponding service area to a main device in a plurality of private wireless base stations; Checking the location of each wireless terminal through the information on the plurality of private wireless base station and the wireless terminal provided by each of the private wireless base station, and the position where the group call is requested when the group call request by location of the wireless terminals Characterized in that it comprises a process of calling a wireless terminal of.

1 is a schematic overall configuration diagram of a network for public and private mobile communication services to which the present invention is applied;

2 is a detailed block diagram of a public / private communication service device and a private base station of FIG.

3 is a detailed functional block diagram of a call management device of FIG.

4 is a block diagram of a regional information table stored for each terminal for group-specific group calls according to an embodiment of the present invention.

5 is a flowchart of a group call operation according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific details such as specific components are shown, which are provided to help a more general understanding of the present invention, and it is understood that these specific details may be changed or changed within the scope of the present invention. It is self-evident to those of ordinary knowledge in Esau.

1 is a schematic overall configuration diagram of a network for public and private mobile communication services to which the present invention is applied. The network to which the present invention is applied has a public / private shared cell area 14, which is a public and private shared communication service area, for providing both public and private mobile communication services. (12) is provided. The public / private shared cell area 14 is preferably defined to benefit a particular group of communications services. For example, if a particular company is using one building, the area to which the building belongs may be designated as the public / private shared cell area 14. At this time, a private base station (pBTS, 8-k) in the public / private shared cell region 14 is recognized as a public base station from the perspective of a public mobile communication system. The pBTS 8-k, together with a wireless terminal (MS) 24 belonging to the public / private shared cell area 14, performs functions for configuring a wireless communication path and managing radio resources, and perform a public / private communication service. The device 12 is connected to a BSC of the public mobile communication system, for example the illustrated BSC 4-m of FIG. 1. The public / private communication service device 12 is connected to the BSC (4-m), the PSTN / ISDN 16, and the IP network (Internet Protocol Network) 18 of the public mobile communication system. The public / private communication service device 12 is a public mobile communication service and a private mobile communication service is selected to wireless terminals in the public / private shared cell area 14, for example, to the wireless terminal 24 of FIG. Perform a mobile communication service to be provided as. The public / private communication service device 12 also performs a wired communication service with a PSTN / ISDN (Public Switch Telephone Network / Integrated Services Digital Network) 16 and an IP network 18.

On the other hand, the Public Land Mobile Network (PLMN) includes a plurality of mobile switching centers (MSCs) (2-1, .., 2-n) and a plurality of base station control stations (BSCs). Controller (4-1, .., 4-m), a plurality of base station (BTS) basestation transceiver subsystems (BTS) 6-1, .., 6-k, 8-1, .., 8-k), It is shown to include wireless terminals (MS) 20, 22, and a HLR / VLR (Home Location Register / Visitor Location Register) 10.

FIG. 2 is a detailed block diagram of a public / private communication service device and a private base station of FIG. 1. Referring to FIG. 2, the public / private communication service device 12 may be classified into a private branched eXchange (PBX) 130, a private BSC (pBSC) 140, and a call manager (CM). It consists of 110. The private exchange 130 includes a switch 132, an E1 interface 134, and the pBSC 140 connects a pCIN (private communication interconnection network) 142 and a transcoder & selector bank (TSB) 144. It is included.

The PBX 130 is similar in configuration and operation to a conventional private exchange, and the pBSC 140 provides functions corresponding to a BSC in a conventional public mobile communication system, that is, radio link control and handoff functions. Perform. The main controller of the pBSC 140 will be described later with reference to FIG. 4, which is embedded in the software block of the call management device 110 (shown as pBSC 113 in the call management device 110 of FIG. 4). The pCIN 142 of the pBSC 140 has a communication path with the call management device 110, a communication path with the BSC (4-m) of the PLMN, a communication path with the pBTS 8-k, and each block in the pBSC 40. Provides a data path between The TSB (Transcoder & Selector Bank) 144 of the pBSC 140 is provided for a wireless service of a private mobile subscriber. The TSB 144 performs a function for matching communication data between the PBX 130 and the pBSC 140.

The pBTS 8-k includes a pBTS Main Controller Card (PMCC) 810, a pBTS Channel Card (PCC) 812, a Transmit & Receive Interface Card (TRIC) 814, and a Private BTS Radio Unit (PRU) ( 816). The configurations included in the pBTS 8-k are similar in operation to those of a BTS configuration in a general public mobile communication system. In pBTS (8-k), PMCC 810 is a block that performs overall control over pBTS (8-k), processes signaling messages related to call setup and system performance, manages hardware and software configuration, and requires resources. Perform the assignment. The PCC 812 performs baseband signal processing conforming to the radio standard. The TRIC 814 is responsible for the transmission and reception interface between the PRU 816 and the PCC 812. The PRU 816 is connected to a plurality of antennas as a radio.

3 is a detailed functional block diagram of a call management device of FIG. The call management device 110 performs a control function for a wireless call of a public and private mobile communication service. In addition, the call management device 50 performs an operation, maintenance, and maintenance functions for the radio resources, and also performs a function of an in-house wireless short message service (SMS). In addition, it supports a function for registering a subscriber and setting up a function of a private mobile communication network, and performs a VLR management function for a roaming function of a wireless terminal subscribed to a private mobile communication network. In addition, according to an aspect of the present invention, an operation related to a group call of a private wireless terminal is performed.

Referring to FIG. 4, the data communication interface 111 in the call management device 50 is an interface module for communication between the pCIN 142 of the pBSC 140 and the call management device 110. Responsible for IPC (Inter Process Communication) through Capacity IPC Processor Assembly. The pBTS Message Router (pBTMR) 112 is a module that is responsible for routing all messages to be processed in the pBTS 8-k. More specifically, the pBTMR 112 refers to the internal router table to designate a control (signal) message path for an incoming / outgoing service (public use or private use) of the wireless terminal, and the pBTS (8-k) Specify the message path for maintenance services. The pBTMR 112 also communicates with the pVLR 117. The pBSC (private BSC) 113 serves as a main control unit of the pBSC 140 shown in FIG. 2 to control the pBTS 8-k. The pMSC 114 is located between the pBSC 113 and the PMIC 115 in supporting the public mobile communication network and the private mobile communication network service, and plays a role corresponding to the role of the wireless terminal C of the existing public mobile communication network. . The PMB (PBX Mobile Interface Controller) 115 is a module for controlling wired and wireless complex functions. The PMIC 115 is a module that handles call control between wired terminal devices located in the public / private shared cell area 14 and connected to wireless terminals registered for private mobile communication service. The Short Message Service Controller (SMC) 116 is a module that is in charge of a control function for a short message service and a Short Message Service (SMS) web server function. The private visitor location register (pVLR) 117 is a module for managing subscriber information registered for a private mobile communication service, location registration information of a private mobile communication subscriber, and information for various function services. The pVLR 117 is connected to a database 117-1 storing the information. The database 117-1 is provided with a regional information table for group-by-group call of a wireless terminal according to a feature of the invention. The wireless system manager (WSM) 118 is responsible for all maintenance, maintenance, and operation of the mobile communication service function provided by the public / private communication service device 12. The operator console 119 is connected to the WSM 117 to interface with the operator. The LAN Interface Module (LIM) indicated by a dotted line is a module that is in charge of communication through a LAN and includes a LIM of a PMIC 115, an SMC 116, a pVLR 117, and a WSM 118. Each LIM is in charge of communicating with corresponding modules through an operating system (OS).

The call management device 110 that performs the configuration and operation controls the overall operation of the public / private communication service device 12 for the group call of the wireless terminals according to an aspect of the present invention. In this case, the pVLR 117 Reference to the regional information table provided in the database 117-1. 4 is a block diagram of a regional information table stored for each terminal for group-specific group calls according to an embodiment of the present invention. First, in the embodiment of the present invention, in order for the wireless terminal in the public / private shared cell area 14 to receive the private mobile communication service, the private mobile communication service must be registered, in which case the operator is shown in FIG. When the private mobile communication service registration is requested using the console 119, the WSM 118 displays the input screen related to the service registration on the monitor of the operator console 119. The WSM 118 displays a screen for inputting subscriber information registered in a private mobile communication service, for example, a mobile identification number (MIN), a wired terminal extension number, and a subscriber name of a wireless terminal. Can be displayed. Accordingly, when the operator inputs the corresponding information, the WSM 118 causes the inputted information to be stored in the database 117-1 of the pVLR 117 as shown in FIG. 5. In addition to the subscriber information of the registered wireless terminal as described above, a configured regional information table for storing group-specific information for each terminal is configured for a group call according to an aspect of the present invention. This regional information is information about the actual location where the wireless terminal is located and is provided from each pBTS 8-k. That is, the pBTS 8-k, which is a private wireless base station, periodically transmits information of wireless terminals located in its service area to the public / private communication service device 12, which is a main device, according to an appropriate period set in advance. Such information is received from the call processing device 110 and managed through the regional information table. To this end, first, the public / private communication service device 12, which is a main device, is provided with information for each pBTS 8-k divided into appropriate regions, which is provided in the database 117-1 of the pVLR 117. Can be. That is, since the positions of the respective pBTSs 8-k are fixed, it can be understood that the positions of the respective wireless terminals are in the service range of the pBTSs 8-k. Thereafter, when the public / private communication service device 12 attempts to call a wireless terminal for each specific zone, the terminal belonging to the corresponding zone is called for each group by referring to the zone information table.

5 is a flowchart of a group call operation according to an embodiment of the present invention. Referring to Figure 5, each of the private wireless base station pBTS (8-k) is periodically sent to the public / private communication service device 12, which is the main device information of the wireless terminals (MS) entered into the service area of the main device In step 510, it is inputted, and in step 512, the location information of each of the corresponding wireless terminals is stored in the regional information table provided in the database 117-1 of the pVLR 117. While repeating the processes of steps 510 and 512, if there is a group call request of the wireless terminal for each location (that is, for each zone), the mobile station checks this in step 514 and proceeds to step 516. The request can be input by the operator through the operator console 119. In step 516, the operator receives a call location (i.e., call area) and a call message from the operator through the operator console 119. Subsequently, in step 518, the pBTS 8-k delivers the paging message to the corresponding pBTS 8-k for calling the location-specific wireless terminal, and the pBTS 8-k receiving the message transmits the paging message to the wireless terminals in the corresponding service area. Will be sent.

As described above, a group call may be made in a private mobile communication system according to an embodiment of the present invention. Meanwhile, the above description of the present invention has been described with reference to specific embodiments, but various modifications may be made without departing from the scope of the present invention. Can be implemented. Therefore, the scope of the present invention should not be defined by the described embodiments, but by the claims and equivalents of the claims.

As described above, the call operation for each group in the private mobile communication system according to the present invention allows the main device to grasp the current position of the wireless terminal and group the group according to its area, thereby reorganizing the group in real time even when the user moves. You can make group calls according to your current location and make them applicable.

Claims (1)

In a group call method in a private mobile communication system, Providing, by a plurality of private wireless base stations installed at a predetermined location, information on wireless terminals of a corresponding service area to a host device at a predetermined time; Storing location information of each wireless terminal in the host apparatus through information on the plurality of private wireless base stations and wireless terminals provided by each private wireless base station; And calling the wireless terminal at the group call requested location by using the stored location information of the wireless terminal when requesting a group call for each location of the wireless terminals.