KR100327163B1 - Method for Radio Frequency Module Jointing In Wireless Local Loop Terminal - Google Patents

Abstract

In a wireless subscriber network terminal, a plurality of subscriber stations share a CDMA RF module that performs wireless data transmission and reception with a base station through a switching device so that a plurality of subscriber stations can share a wireless channel.

The present invention is characterized in that when registering a wireless subscriber network terminal simultaneously registers the IMSI of a plurality of subscriber stations connected to the switching means for one ESN to map to a database so that a plurality of subscriber stations share one ESN.

In addition, when an incoming call is requested to set up a call with an arbitrary wireless subscriber network terminal, the database is searched to extract the IMSI number of the corresponding subscriber station, the IMSI group and the ESN containing the extracted IMSI number are extracted, and then the ESN and Forms a packet including the IMSI group representative and the IMSI of the corresponding subscriber terminal and calls the subscriber terminal by paging, and the switching means of the wireless subscriber network terminal receiving the paging through the RF module extracts the IMSI of the subscriber terminal to be called. A call connection request signal is sent to a corresponding subscriber station, and a call is established through an assigned channel according to a response of a called subscriber station to execute a service.

Description

Method for Radio Frequency Module Jointing In Wireless Local Loop Terminal}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless local loop. More particularly, the present invention relates to a plurality of subscriber stations comprising a CDMA RF division module of a wireless subscriber network terminal for performing wireless data transmission and reception with a base station. The present invention relates to a method for sharing an RF module of a wireless subscriber network terminal so that a plurality of wireless subscriber network terminals can share one wireless channel.

In general, a wireless subscriber network service system provides various communication services by connecting a telephone company, a general home, and an office by wireless rather than by wire. As shown in FIG. 1, a public switched telephone network (PSTN): 10) between the public switching system 20 and the public switching system 20 and the base station transceiver 50 that analyze the station number and telephone number for the call connection request and then perform switching for connection of the corresponding link. Status management of the base station transceiver 50 and the set-up and release functions of an incoming and outgoing call between a wireless subscriber network terminal and a wired terminal that enters its service area, a radio resource management function, between base stations and between specific base stations. A base station controller 30 which performs a handoff function and performs conversion and inverse conversion of voice packet data into PCM data; It is located between the base station controller 30 and the wireless subscriber network terminal 100A-100N to induce the base station to be recognized by the wireless subscriber network terminal 100A-100N, and establishes a traffic channel according to a call connection request. A base station transceiver 50 that allocates and executes call setup, and a database 40 that stores data necessary for overall operation of the base station controller 30 and information on terminals subscribed to the wireless subscriber network. Is done.

In the wireless subscriber network service system configured as described above, a CDMA Code Division Multiple Access Common Air Interface (CAI) that typically increases user channels per bandwidth, has strong frequency selective fading by multipath signals, and secures incompatibility It provides a service using a method.

In order to provide the CDMA CAI type service as described above, an ESN (Electronic Serial Number), which is a serial number assigned at the time of manufacture of a wireless subscriber network terminal, is an identifier for identifying the wireless subscriber network terminal subscribed to the database 40. ) And the IMSI (Internal Mobile Station Identity) assigned according to the corresponding country, network operator, and the telephone number assigned to the service provider in the process of registering with the service network provider so that the manufactured wireless subscriber network terminal can receive communication service in the future. Is stored.

However, in the conventional wireless subscriber network system, in the process of registering the manufactured wireless subscriber network terminal, as shown in Table 1 below, ESN, which is a unique serial number assigned to the corresponding wireless subscriber network terminal, and only one IMSI are registered with respect to the location. In registration, call setup and release, it used as a delimiter to distinguish the corresponding wireless subscriber network terminal.

Subscriber ESN number IMSI number Chulsoo Kim ESNa IMSIa Youngcheol Kim ESNb IMSIb Admiral Yi ESNc IMSIc … … …

In the wireless subscriber network system as described above, when an incoming call requesting an arbitrary subscriber station and call setup is detected at the base station controller 30 through the PSTN 10 and the public switching system 20, the base station controller 30 The processor of the mobile station analyzes the telephone number of the wireless subscriber network terminal to be called in the detected incoming call, reads the ESN and IMSI from the database 40, and then provides the service of the wireless subscriber network terminal that is currently required to access the call. Determine whether it is registered in the area.

If it is determined that the subscriber station requesting the call connection is a wireless subscriber network terminal registered in its service area, paging a call connection request based on the extracted ESN and IMSI to perform a base station transceiver 50. After calling the wireless subscriber network terminal through the call set up according to the response of the wireless subscriber network terminal to proceed with the service.

In the conventional wireless subscriber network system as described above, since the information of the wireless subscriber network terminal subscribed to the service network is databased with one ESN and one IMSI information, the wireless subscriber network terminal also has one ESN and IMSI. There was a problem that one RF module is required for each wireless subscriber network terminal.

In addition, in the conventional wireless subscriber network system, since the ESN and IMSI are registered for each wireless subscriber network terminal, there is a problem in that limited resources cannot be efficiently used in the service system.

The present invention has been made in view of the above-described general problems, and its object is to allow multiple subscriber stations to share one wireless subscriber network CDMA RF module through a switching device to provide efficiency in limited resource utilization of the switching system. It effectively uses limited resources through sharing CDMA RF module, and uses wireless channels as wired trunks without additional wired network hypothesis in suburban areas or areas where general telephone network is not normally provided. It would be to provide.

1 is a schematic configuration diagram of a conventional wireless subscriber network system,

2 is a schematic structural diagram of a wireless subscriber network system according to the present invention.

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

10: PSTN 20: air exchange system

30: base station controller 40: database

50: base station transceiver 60: antenna

70: RF module 80: switching unit

In order to achieve the above object, the present invention provides an IMSI corresponding to the telephone numbers of a plurality of subscriber stations connected to the CDMA RF module through a switching means, and an ESN corresponding to the CDMA RF module. Grouping corresponding to each other, granting the IMSI, mapping and storing the IMSI in a database; Extracting IMSI of the call establishment target subscriber terminal by searching the database when the incoming call requesting the call establishment with the subscriber station is detected through the PSTN and the public switching system; Extracting the group representative IMSI and the ESN including the extracted IMSI from the base station controller, and then forming a packet including the ESN, the group representative IMSI and the IMSI of the subscriber station to which the call is set up, and transmitting the packet through the base station transceiver; and; Receiving, by the CDMA RF module having the ESN and the group representative IMSI, extracting the IMSI of the call establishment target subscriber station from the received packet and transferring the received packet to the switching means; Transmitting a call connection request signal to a corresponding subscriber station based on the IMSI of the call establishment target subscriber terminal received by the switching means; And establishing a call through the allocated channel according to the response of the called subscriber station.

In addition, when the subscriber station transmits, the switching means processes a packet of its own IMSI set in its database and the number of the call destination terminal into a packet and transmits it to the base station transceiver device via the CDMA RF module. Process; The base station transceiver further transmits a signal received from a CDMA RF module to a base station controller, and analyzes the received signal from the base station controller to call the terminal to be called through the public switching system and the PSTN. Characterized in that.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As can be seen in Figure 2, the wireless subscriber network service system according to the present invention, as in the general configuration described above, access the PSTN (10), analyze the station number and telephone number for the call connection request and then the connection of the link The air exchange system 20 which performs switching for the wireless communication system, which is between the air exchange system 20 and the base station transceiver 50, is wirelessly registered in its service area and the state management of the base station transceiver 50. A base station for setting and releasing an incoming call between a subscriber network terminal and a wired terminal, a radio resource management function, a soft handoff function between base stations and specific base stations, and converting voice packet data into PCM data and performing inverse conversion. It is located between the controller 30 and the base station controller 30 and the wireless subscriber station 100A-100N subscribed to the service network. The base station transceiver 50 and the base station controller 30 which induce the particle terminal 100A-100N to recognize the base station and perform call setup by allocating a traffic channel according to a call connection request. It is composed of a database (40) that stores data necessary for operation and information on the wireless subscriber network terminal subscribed to the service network.

In the database 40, an ESN, which is a serial number assigned at the time of manufacturing a wireless subscriber network terminal, as a delimiter for discriminating a wireless subscriber network terminal subscribed to a corresponding service network, and a manufactured wireless subscriber network terminal are used for future communication service. In the process of registering with the service network operator to receive the service, the IMSI is stored according to the corresponding country, network operator, and the telephone number assigned to the service provider, which is stored as shown in Table 2 below.

In addition, the CDMA RF module 70 of the wireless subscriber network terminal is connected to the switching unit 80 to connect a plurality of subscriber stations (100A-100N) through the switching unit 80, one CDMA RF module 70 This allows a plurality of subscriber stations (100A-100N) to share.

The switching unit 80 connected to one CDMA RF module 70 connects a plurality of subscriber stations 100A-100N by wire or wirelessly, and performs switching for setting up a call with the corresponding subscriber station according to an incoming call. Run

Subscriber ESN IMSIg Phone number XX ESNa IMSIa1 543-2674 XX IMSIa2 543-2653 ··· ··· ··· XX IMSIan 543-2601 NewXX ESNb IMSIb1 543-2731 ParkXX IMSIb2 543-2789 ··· ··· ··· YoonXX IMSIbn 543-2324 XX ESNc IMSIc1 234-1234 BagXX IMSIc2 235-1357 ··· ··· XX IMSIc3 345-1576 ··· ··· ··· ···

As can be seen from Table 2 above, subscribers with ESNa given at the time of manufacture of a wireless subscriber network terminal are referred to as 'Kim XX, Yi XX,...' If there are a large number of people, 'XXSIag', then set it as one 'IMSIag' group, and for each subscriber, 'IMSIa1, IMSIa2,…' , IMSIan ', and stores the ESNA and IMSIag, and the telephone number of the wireless subscriber network terminal to which it is assigned, in the database 40.

When the number of subscribers becomes large for the ESNb-ESNn given at the time of manufacture of the wireless subscriber network terminal as described above, the IMSIbg-IMSIng group is set for the subscribers, and then IMSIb1, IMSIb2,... IMSbn-IMSIn1, IMSIn2,... , And grants IMSInn and stores the telephone number of the wireless subscriber network terminal given thereto in the database 40.

For example, assuming that one wireless subscriber network terminal CDMA RF module having a specific frequency band shares 12 terminals, 13 subscriber stations for one ESN granted to the wireless subscriber network terminal having the CDMA RF module. IMSIs are set and mapped to groups, and each subscriber station is given a telephone number.

As described above, the IMSI of each wireless subscriber network terminal and the IMSI of each subscriber terminal and the telephone number of each subscriber terminal are set in the database 40 so that a single CDMA RF module can share a wireless channel. The call setting with the corresponding subscriber station in response to the incoming and outgoing calls is as follows.

As can be seen in FIG. 2, when an incoming call applied to the base station controller 30 is detected through the PSTN 10 and the public switching system 20, the processor of the base station controller 30 sets up a call from the incoming call. The phone number of the required subscriber station is analyzed through the database 40 to detect the subscriber's IMSI number, extract the ESN that manages the detected IMSI group, and then form the extracted ESN and the group representative IMSI into packets to transmit and receive the base station. Upon application to the device 50 side, the base station transceiver 50 processes the applied packet as an RF signal and makes a paging call to the corresponding wireless subscriber network terminal.

At this time, the IMSI corresponding to the actual number of the subscriber station to be called is added to the paging information formed into a packet.

As described above, the wireless subscriber network terminal receiving the paging formed by the ESN extracted from the incoming call and the group representative IMSI extracts the IMSI included in the received packet and checks the subscriber terminal that is actually called. Incoming ring is sent, call is set up according to the response of the corresponding subscriber station, and billing is performed according to service use by using IMSI information according to the counter time.

In addition, when the subscriber station establishes an outgoing call, the processor in the subscriber station transmits the base station transceiver 50 to the base station transceiver 50, including the IMSI of the subscriber station actually calling in the caller call setup information in the process of setting up the call. The device 50 processes the packet of the outgoing call received from the subscriber station and applies it to the base station controller 30.

The processor of the base station controller 30 extracts the IMSI of the subscriber station included in the received information and performs processing such as charging for service use according to the response of the called terminal.

For example, the PSTN 10 and the PSTN 10 may be stored in a state in which information about a plurality of particle terminals 100A-100N sharing a single CDMA RF module 70 is recorded as shown in Table 2 above. When an incoming call calling 543-2653 subscriber station is received through the public switching system 20, the processor of the base station controller 30 searches the database 40 to determine whether the 543-2653 telephone number exists. .

Since there is a telephone number for the incoming call, the IMSI for this number and the ESN and group representative IMSI to which the number belongs are extracted.

The IMSI for 543-2653 is 'IMSIa2', the ESN to which this number belongs is 'ESNa', and the group representative IMSI becomes 'IMSIag', so that the processor can analyze the 'ESNa' and 'IMSIag'. After the subscriber terminal is called, 'IMSIa2' for the called telephone number is included and formed into a packet and applied to the base station transceiver 50.

The base station transceiver 50 forms an applied packet as wireless data and then makes a paging call to the wireless subscriber network terminal.

Subsequently, when the RF module 70 of the wireless subscriber network terminal having the group of ESNa and IMSIag receives the paging received from the base station transceiver 50 through the antenna 60, the called party number is received from the received paging call information. It extracts the designated 'IMSIa2' and transfers the information of the extracted 'IMSIa2' together with the call information to the switching unit 80.

The switching unit 80 transmits a cinch ring after connecting a link for establishing a call with a subscriber station having 'IMSIa2' according to the received call information and 'IMSIa2' and transmits a thin ring, and allocates a channel according to the user's response. Set the arc of.

Also, for example, when a subscriber station having 543-2601 calls a terminal having 325-9351, the switching unit 80 of the subscriber station is called with an IMSI, which is its IMSI, in its database. Process the number 325-9351 and apply it to the RF module 70 side.

The RF module 70 forms a packet including 'IMSIan', which is the information of the sender, in the basic information for setting up an outgoing call according to an authorized outgoing request, and then controls the base station controller 30 through the base station transceiver 50. To transmit.

The base station controller 30 analyzes the applied signal and then calls the terminal through the public switching system 20 and the PSTN 10 according to a normal call processing procedure, and according to the response of the called terminal, Use IMSIan 'to charge for the use of the service.

As described above, according to the present invention, the IMSI of a plurality of subscriber stations connected to the switching means of the wireless subscriber network terminal is registered to a single RFN with respect to one ESN. Since multiple subscriber terminals share a wireless channel, it provides efficiency in utilizing limited resources of the switching system, and uses a wireless channel as a wired trunk without a separate wired network hypothesis in suburban areas or areas where a general telephone network is not normally provided. Provide quality communication services to subscribers.

Claims (4)

delete delete The IMSI is assigned to correspond to the telephone numbers of the plurality of subscriber stations connected to the CDMA RF module through the switching means, the ESN is assigned to the CDMA RF module, and the IMSI is grouped according to the ESN to give the IMSI a database. Mapping the data to the storage; Extracting IMSI of the call establishment target subscriber terminal by searching the database when the incoming call requesting the call establishment with the subscriber station is detected through the PSTN and the public switching system; Extracting the group representative IMSI and the ESN including the extracted IMSI from the base station controller, and then forming a packet including the ESN, the group representative IMSI and the IMSI of the subscriber station to which the call is set up, and transmitting the packet through the base station transceiver; and; Receiving, by the CDMA RF module having the ESN and the group representative IMSI, extracting the IMSI of the call establishment target subscriber station from the received packet and transferring the received packet to the switching means; Transmitting a call connection request signal to a corresponding subscriber station based on the IMSI of the call establishment target subscriber terminal received by the switching means; A method of sharing an RF module of a wireless subscriber network terminal, comprising: establishing a call through an allocated channel according to a response of a called subscriber station. 4. The base station according to claim 3, wherein, when the subscriber station transmits, the switching means processes a packet of its own IMSI set in its database and the number of the call destination terminal into packets to transmit and receive the base station via the CDMA RF module. Transmitting to the device; The base station transceiver further transmits a signal received from a CDMA RF module to a base station controller, and analyzes the received signal from the base station controller to call the terminal to be called through the public switching system and the PSTN. RF module sharing method of a wireless subscriber terminal, characterized in that.