KR100210752B1 - Billing data generating method and thereof device in satellite telecommunication system - Google Patents

Abstract

A method of generating billing data using coordinates of a transmitting / receiving station of a satellite communication system, which generates billing data that is the basis for calculating charges based on channel usage based on absolute distances calculated using the position data of two talked base stations as parameters And to the apparatus. In the billing data generation method and apparatus according to the present invention, TC (Trunk Code) information of a calling party base station and a called subscriber base station is read out from a memory in response to a call request of an arbitrary subscriber, and based on the read TC information. Allocate a call path between subscribers, calculate an absolute distance between a transmitting / receiving station based on the position data read out by the TC information, and calculate and output data necessary for charging.

Description

Charging data generation method using coordinates of transmitting / receiving station in satellite communication system and its device

The present invention relates to a satellite communication system using satellites, and in particular, satellite communication to generate billing data which is the basis for calculation of charges based on channel use based on the absolute distance calculated using the position data of the two base stations that have been called as parameters. The present invention relates to a billing data generation method using a transmission / reception station coordinate value of a system and an apparatus thereof.

In general, voice communication using satellite refers to providing a two-way communication service so that a voice call can be executed between two remote subscribers through a stationary satellite mounted at an altitude of 36000 km. Fig. 1 is a block diagram showing the overall system configuration of a Demand Assignment Multiful Access (DAMA) satellite communication system configured to allocate a communication channel on demand.

In Fig. 1, reference numeral 1 is a satellite having a plurality of communication channels, 2 is a central control station for controlling the entire satellite communication system, and 3 (3A, 3B) is an exchange 11A, 11B or a telephone 12A, 12B. And interface functions for terminals such as data terminals 13A and 13B and facsimile 14A and 14B, such as a computer, and communication between the various terminals through data transmission and reception with the central control station 2. It provides a base station.

In FIG. 1, reference numeral S denotes a service channel for transmitting and receiving control data, and T denotes a traffic channel for transmitting and receiving data or voice.

That is, in the above configuration, the central control station 2 periodically transmits a control message through the service channel and then, based on the response message transmitted from the base station 3, that is, the state of each base station 3, namely, It performs a polling function to check the available capacity of the communication capacity or communication channel, wherein the transmission of the message to the base station 3 is performed using a TDM channel (Time division Multi-channel) The message transmission from the base station 3 to the central control station 2 is performed using S-ALOHA (Sloted ALOHA).

In addition, when there is a call request for a terminal of a base station 3B jurisdiction from a base station 3A, the central control station 2 uses the base station 3B based on the information obtained in the polling process. Determines whether the communication is possible, and if the communication is available, allocates the available traffic channels T of the satellites to both base stations 3A and 3B so that both base stations 3A and 3B directly communicate with each other. It can be done.

When the communication between the base stations 3A and 3B is terminated and the communication termination signal is applied through the service channel S from the base station 3A, which has been requested for communication, the central control station 2 receives By executing the communication termination process, the traffic channel T which has been provided to both base stations 3A and 3B is released.

On the other hand, after the call is terminated, the operator operating the satellite communication network needs to charge an appropriate fee according to the channel usage, and therefore, it is necessary to prepare a calculation standard according to the date. Prior to detailed management such as differentiating rates according to time zones, basic charging criteria considering the distance between the two subscriber base stations communicated are required.

The present invention has been made in view of the above circumstances, and based on the absolute distance calculated by calculating the position data of the two base stations communicated, An object of the present invention is to provide a billing data generation method using the coordinates of a transmitting / receiving station and an apparatus thereof.

1 is a system schematic diagram showing an overview of a general satellite communication system;

2 is a block diagram showing the configuration of a base station 3 according to an embodiment of the present invention;

3 is a block diagram showing the configuration of the network control unit 63 shown in FIG. 2 in more detail.

4 is a diagram illustrating the position data of each base station stored in the base station position data storage unit 638 of FIG.

Fig. 5 is a flowchart for explaining the operation of the apparatus in the configuration of Fig. 2;

*** Explanation of symbols for main parts of drawing ***

1: satellite, 2: central control station,

3A, 3B: base station, 11A, 11B: exchanger,

12A, 12B: telephone, 13A, 13B: data terminal,

14A, 14B: facsimile, 21: antenna,

22: orthogonal mode converter, 23: low noise amplifier,

24: frequency down converter, 25: intermediate frequency combination / distribution,

27: trunk interface port, 32: frequency converter,

33: high power amplifier, 60: telephone data card,

62: SCPC channel unit, 63: network control unit,

65: UPH (Utility PCM Highway) 66: MPH (Main PCM Highway)

631 processor, 632 service channel controller,

633: dual port RAM, 634: program storage,

635: timer, 636: time data management unit,

637: time data storage, 638: base station location data storage,

639: network information storage unit.

In order to realize the above object, the billing data generation method using the coordinates of the transmitting / receiving station of the satellite communication system according to the first aspect of the present invention is the TC (Trunk Code) of the subscriber base station and the called subscriber for the call request of any subscriber. TC information reading step of reading information from memory, a call allocation step of allocating a call path between two subscribers based on the read TC information, and a call storing the call start time counted by a timer immediately after the call assignment. Storing the start time, reading the position data of the transmitting / receiving station from the memory based on the read TC information, and calculating the absolute distance between the transmitting / receiving station based on the read position data; And a billing data calculation output step of calculating and outputting data necessary for billing.

In addition, the charging data generating apparatus using the coordinates of the transmitting / receiving station coordinates of the satellite communication system according to the second aspect of the present invention is based on timer means for counting the present time and time data counted by the timer means itself. Time data management means for managing the current time, network information storage means for storing TC (Trunk Code) information for each subscriber of the satellite communication network, and base station location data storage means for storing location information of each base station as data Computes the billing data for charging the call charge by controlling the call channel allocation for the call request of the subscriber and the subscriber and calculating the absolute distance between the transmitting and receiving stations by using the position data read from the base station position data storage means. Characterized in that configured to include a control means.

That is, according to the present invention having the above-described configuration, by calculating the coordinate data of the two base stations with the call to calculate the absolute distance between the two points, by generating the charging data that is the basis of the calculation of the charge based on the channel use Subsequent charges will provide evidence.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of a base station according to an embodiment of the present invention. In FIG. 21, reference numeral 21 denotes transmitting and receiving an uplink signal and a downlink signal for the satellite 1. An orthogonal Mode Transducer (OMT) for separating and transmitting and receiving signals transmitted and received through the antenna 22 using a polarization property of frequency, and 23 is an Orthogonal Mode Transducer. A low noise amplifier (LNA) for low noise amplifying downlink frequency signals of 12.25 to 12.75 GkHz input, for example, is an intermediate frequency signal of 70 MHz, for example, a low frequency amplifier applied through the low noise amplifier 23. It is a frequency down converter (DC) to convert to (IF).

In addition, reference numeral 25 separates and outputs the intermediate frequency signal IF applied from the frequency down converter 24 into a plurality of intermediate frequency signals, and also describes a Single Channel Per Carrier (SCP) channel unit to be described later. Intermediate frequency combiner / distributor (IF C / D: IF Combiner / Distributer) for combining and outputting the intermediate frequency signal applied from SCU: 61, and 61 (61 _{1 to} 61 ₃₂ ) are the intermediate frequency combiner / distributor An SCPC channel unit 61 which demodulates, decodes and outputs an intermediate frequency signal applied from (25), or vice versa, which encodes and modulates a transmission signal to be transmitted to the central control station 2 or another station. Is for transmitting and receiving signals to and from the central control station 2 or other base station shown in FIG.

Reference numeral 27 denotes a trunk interface port for connecting the base station 2 to another switch, and 32 denotes an IF signal of 70 MHz applied from the IF combination / distributor 25. For example, a frequency up-converter (UC: Up Converter) for converting into microwaves of 14.0 to 14.5 G4.5 to generate an uplink frequency signal, and 33 are a high output amplifiers for amplifying an uplink frequency signal output from the frequency up-converter 32. HPA: High Power Amplifier.

Reference numeral 60 denotes a telephone data card for connecting a terminal such as a telephone 12, a data terminal 13, a facsimile 14, or the like, as shown in FIG. In order to control the channel unit 61, the trunk interface port 27 and the telephone data card 60 to provide a predetermined communication channel to the subscriber, and to inform the central station 2 of the current status of the base station. A network controller for generating and outputting message data; It is designed to exchange control data with the above-described SCPC channel unit (SCU) 61, trunk interface port (TIP) 27, and telephone data card (TDC) 60 through UPH (65: Utility PCM Highway). In addition, traffic data communication with each module is performed through the MPH 66: Main PCM Highway.

On the other hand, Figure 3 is a configuration diagram showing the configuration of the above-described network control unit 63 in more detail, reference numeral 631 in the drawing controls the entire system and the telephone data card (Telephone Data Card) via the UPH bus 65 Or a processor that controls call establishment through communication with the central station 2 when there is a call request from a subscriber assigned to the trunk interface port 27, 632 is a message authorized by the SCPC channel unit 61. Extract the S-ALOHA (Sloted ALOHA) packet information from the packet information and record the received data in the dual port RAM 633 which will be described later, and add it to the local information through the SCPC channel unit 31. This is a service channel controller (SCC) that generates and outputs a message of a TDM stream.

Also, reference numeral 633 denotes a dual port RAM, which is provided for data transmission and reception between the processor 631 and a service channel controller (SCC) 632.

In addition, reference numeral 634 is a program storage unit for storing the operating program of the processor 631, 635 is a timer for counting the current time, 636 is the time data and the timer transmitted from the central control station (2) A time data management unit that manages the accurate current time by comparing the time data counted by 635 at regular time intervals.

Reference numeral 637 is a time data storage for periodically updating and storing current time data calculated by the time data management unit 636, and 639 is a network for storing TC (Trunk Code) information for each subscriber of the satellite communication network ( I) Information storage unit 638 is a base station location data storage unit for storing the position data of each base station as an ordered pair of coordinate data considering latitude and longitude as illustrated in FIG.

Next, the operation of the apparatus having the above configuration will be described with reference to the flowchart shown in FIG.

When there is a call request from any subscriber connected to the trunk interface port (TIP) 27 or the telephone data card (TDC) 60 (ST1), the processor 631 is the network information storage unit 639. ), And reads TC (Trunk Code) information of the called subscriber base station (Originate SET) and the called subscriber station (Terminate SET) (ST2), and based on this, the central control station (2) is requested to set up a call (ST3)

In response, the central station 2 checks whether the called subscriber, that is, the called subscriber station (Terminate SET) is in a callable state, and transmits channel information to be used as a call channel between two subscribers in the callable state. The processor 631 checks whether or not the above-mentioned call setting confirmation data has been received from the central station 2 (ST4), and if the channel to be used as the call channel is allocated, the corresponding channel is transferred to the caller. Will be provided as (ST5)

On the other hand, if it is confirmed in step ST4 that the called subscriber station (Terminate SET) is not in a call state because it is already in a call or there is no channel to be used, a call unavailable message is transmitted from the central control station 2. In this case, the processor 631 checks the message transmitted from the central station 2 (ST6), and sends a busy tone to the caller, indicating that the call is not possible. (ST7)

Immediately after the call path is set in step ST5, the processor 631 starts a call to the central control station 2 based on the time data counted by the timer 635 in preparation for the case where the set call path is not normally released. A start time is reported (ST8), and together with the coordinate data of both subscriber TCs, that is, the transmitting station coordinate data, from the base station position data storage unit 638. (x, y) And recipient coordinate data (x, y) To read, for example,

The absolute distance (D) between the sending and receiving stations is calculated by calculating (D: absolute distance between sending and receiving stations). (ST9)

Then, when the call is terminated between the two subscribers, the processor 631 checks this (ST10), and the general data necessary for the billing process to the central control station 2, that is, the call date and call start time and end time, and the call time. (holding time) and the absolute distance (D) between the transmitting / receiving station calculated in step ST9 together with the release resources request signal to the central control station (2) to provide the baseline data for the call charges. After providing, the above-described series of billing data calculation operations are terminated.

On the other hand, the charging data transmitted to the central control station 2 by the above-described process is not shown, but is stored in the hard disk provided in the central control station 2, so that the network management operator can calculate the basis data for calculating the charge. Be prepared when you ask.

That is, according to the above embodiment, the charging data according to the use of the channel can be calculated using the absolute distance calculated based on the coordinate data of the two base stations communicated with each other. Simply adding or deleting the location data will result in a simple readjustment.

On the other hand, the present invention is not limited to the above embodiment and can be carried out in various modifications within the scope not departing from the technical gist of the present invention, for example, although not shown, the central control of the base station position data storage unit 638 By separately configuring the station 2, the central control station 2 may be configured to calculate the above billing data itself based on the TC information provided from the subscriber base station.

As described above, according to the present invention, it is possible to realize a billing data calculation method and apparatus using coordinate data of a transmitting / receiving station that can be applied to a satellite communication system.

Claims (2)

A TC information reading step of reading the TC (Trunk Code) information of the calling party base station and the called subscriber from the memory in response to a call request of any subscriber; Call channel assignment step of allocating a channel between the two subscribers based on the read TC information, A call start time storing step of storing a call start time counted by a timer immediately after allocating to a call, A position data reading step of reading position data of a transmitting / receiving station from a memory based on the read TC information, and Calculating the absolute distance between the transmitting / receiving stations based on the read position data, and calculating and outputting data necessary for charging, and calculating the coordinates of the transmitting / receiving station of the satellite communication system. Charging data generation method using. Timer means for counting the current time; Time data management means for managing the current time based on the time data counted by the timer means itself; Network information storage means for storing the TC (Trunk Code) information for each subscriber of the satellite communication network, Base station location data storage means for storing location information of each base station as data; and Controlling the call channel allocation for the call request of any subscriber and calculating the absolute data between the sending / receiving station using the position data read from the base station position data storage means to calculate and output the billing data for the call charge. An apparatus for generating charging data using coordinate values of a transmitting / receiving station of a satellite communication system, comprising a means.