KR100271876B1 - Method for data accessing in satellite communication system - Google Patents

Abstract

PURPOSE: A device and a method for allocating communication resources in a satellite communication system are provided to compare an originating subscriber kind with an incoming subscriber kind, and to allocate communication resources according to call setup only when the kinds of the subscribers are coincident, so as to prevent the waste of communication resources according to abnormal call setup. CONSTITUTION: If call request data are received from a base station including an originating subscriber, a processor(103) reads data on an originating subscriber kind and incoming subscriber information from a received call request data row, for storing in a subscriber kind information storage unit(108). The processor(103) delivers data requesting an incoming subscriber kind to a base station including the incoming subscriber, based on the incoming subscriber information stored in the subscriber kind information storage unit(108). The processor(103) confirms the receiving of incoming subscriber kind data from the base station including the incoming subscriber. If incoming subscriber kind data are decided to be received, the processor(103) compares the originating subscriber kind stored in the subscriber kind information storage unit(108) with the incoming subscriber kind. If kinds of both subscribers are coincident, the processor(103) allocates communication resources used in call connection between both subscribers to both base stations. The processor(103) clears information on the corresponding originating/incoming subscribers in the originating/incoming subscriber kind information stored in the subscriber kind information storage unit(108), and an initial state is returned. If kinds of both subscribers are not coincident, the processor(103) reads a call setup unavailable message stored in an announcing message storage unit(105), for delivery to the base station including the originating subscriber.

Description

Communication resource allocation device and method in satellite communication system

The present invention relates to a control system for satellite communication network management, and in particular, when an operator performs a call service, a transponder for call setup only when the types of both subscribers match by checking the type of the calling subscriber and the type of the called subscriber. The present invention relates to a communication resource allocating apparatus and method in a satellite communication system in which a communication resource can be efficiently used by allocating a resource such as a channel.

System control in the satellite communication system mainly used for remote communication is to be executed by the central control station that manages the overall network operation state, Figure 1 schematically shows the configuration of the central control station of the DAMA-SCPC satellite communication system The block diagram shown in FIG.

In FIG. 1, reference numeral 10 denotes an antenna for transmitting and receiving an uplink signal transmitted to a satellite (not shown) and a downlink signal transmitted from a satellite, and 20 denotes an antenna 10. RF transmission / reception, which converts the downlink signal of the ultra-high frequency band received to the intermediate frequency (IF) signal and converts the intermediate frequency (IF) signal of the 70 MHz band into the RF signal of the ultra-high frequency band at the same time for the uplink signal. 30 is an IF processing stage for processing an intermediate frequency (IF) signal in the 70 MHz band, and the IF processing stage 30 demodulates and decodes an intermediate frequency (IF) signal applied from the RF transmitting and receiving stage. Along with the output box, a message output from the network controller 40 to be described later is encoded and modulated.

Further, reference numeral 40 denotes a control message sent to each base station through the SCPC unit (not shown) of the IF processor 30 and then checks the status of each base station based on a response message transmitted from the base station. In case that there is a call request from a specific base station, the other base station determines whether the communication is possible based on the information obtained in the polling process. It is a network control unit that performs system control, such as by assigning the two base stations to the two base stations can perform mutual communication directly.

In addition, reference numeral 50 denotes a network management system that enables the satellite communication network operation manager to monitor the overall operating status on the network and to control the entire satellite system including the base station as necessary.

On the other hand, in the satellite communication system having the above configuration, when a subscriber requests a call service, if it is determined that the called subscriber is in a busy state, and it is determined that he is not in a call, the communication resource according to the call setup to the base station to which both subscribers are bound (Transponder channel, channel modem, etc.) is allocated, even if the calling subscriber and the called subscriber are not the same type of subscriber, communication resources according to the call setup are allocated to both base stations, but in practice both subscribers call each other. Will not be able to.

That is, if the type of outgoing subscriber is voice subscriber and the type of incoming subscriber is fax subscriber, even if the call is established between the two subscribers by using the communication resources allocated by the central station, both subscribers are required to release the call without making a call. This causes waste of communication resources due to abnormal call setup.

Accordingly, the present invention has been made in view of the above circumstances, and compares the type of the calling subscriber with the type of the called subscriber to allocate the communication resource according to the call setting only when the types of both subscribers match, thereby making an abnormal call setup. The purpose of the present invention is to provide a communication resource allocating apparatus and method in a satellite communication system that can prevent the waste of communication resources.

1 is a block diagram schematically showing the configuration of a general satellite communication system.

Figure 2 is a block diagram showing the internal configuration of the network control unit 100 according to an embodiment of the present invention.

3 is an operation flowchart for explaining the operation of the apparatus shown in FIG.

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

10: antenna, 20: RF transmitter and receiver,

30: IF processing stage, 40,100: network control unit,

50: network management device, 101: service channel controller (SCC),

102: dual port RAM (DP RAM), 103: processor,

104: program storage unit, 105: guide message storage unit,

106: base station information storage unit, 107: channel information storage unit,

108: subscriber type information storage unit.

In the satellite communication system according to the first aspect of the present invention for achieving the above object is a satellite communication system for providing communication between subscribers by combining a plurality of base stations coupled to a plurality of subscribers via satellite, A subscriber information storage step of reading and storing the information of the calling subscriber and the information of the called subscriber from the call request data string received when the call is set up from the base station, and the called subscriber based on the called subscriber information stored in the subscriber information storing step. Incoming subscriber information requesting step for requesting information on the type of called subscriber to the subsidiary base station, Receiving subscriber type for receiving subscriber type data from the base station for subscriber type request data sent to the base station in the receiving subscriber information request step. In the information receiving step, the receiving subscriber type information receiving step The subscriber type comparison step for comparing the received subscriber type and the type of outgoing subscriber stored in the subscriber information storing step, and the communication used for call setup when the type of the calling subscriber and the called subscriber in the subscriber type comparison step is identical A call setup step of allocating resources, and a call setup impossibility message sending step of transmitting a call setup impossibility message to the base station to which the outgoing subscriber is subscribed if the types of the outgoing subscriber and the incoming subscriber do not match in the subscriber type comparison step. Characterized in that configured.

On the other hand, in the satellite communication system according to the second aspect of the present invention for achieving the above object is a communication resource allocation device in a satellite communication system for providing communication between subscribers by combining a plurality of base stations coupled to a plurality of subscribers via satellite A message storage unit for storing a guide message relating to call setup, a base station information storage unit for storing state information of each base station, a channel information storage unit for storing a use state of a communication channel allowed by satellites, and a call When the call request data is received from the base station to which the subscriber is stored, and the call request data is received from the base station to which the subscriber is bound, the called subscriber is selected based on the subscriber information of the called subscriber. The base station to which the subscriber is bound by requesting the type of subscriber to be bound Comparing the types of the called party and the calling party is received from the type, characterized in that configured with a processor for controlling to assign a communication resource in accordance with the call setup only if the kinds of both the subscriber matches.

That is, according to the present invention having the above-described configuration, when the call setup request is made from the base station on the calling party's side, the communication resource according to the call setup is established only when the calling party type and the called party type match. By allocating, it is possible to prevent waste of communication resources due to unnecessary call setup.

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

2 is a block diagram showing the internal configuration of the network control unit 100 in the satellite communication system according to an embodiment of the present invention.

In the figure, reference numeral 101 extracts packet information from a message applied from the SCPC channel unit 24 to generate an S-ALOHA packet, and generates and outputs a message of a TDM stream for the SCPC channel unit 24. A service channel controller (102), 102 is a dual port RAM provided for data transmission and reception between the processor 103 and the service channel controller 101 to be described later, 103 is the overall control of the network controller 100 Processor for performing the.

Further, reference numeral 104 denotes a program storage unit for storing the operation program of the processor 103, and 105 denotes a guide message storage unit for storing a guide message for call setup. This subscriber is a fax subscriber and cannot set up a call. "

Reference numeral 106 denotes a base station information storage unit for storing state information of each base station obtained by a polling operation of the network controller 100, and 107 denotes a channel information storage unit for storing a use state of a communication channel allowed by the satellite. For example, when the channel is in use, the channel information is stored by setting it to "1". If the channel is not in use, the channel information is stored as "0".

In addition, reference numeral 108 is a subscriber type information storage unit for storing subscriber information according to call setup, which reads and stores the type subscriber data and incoming subscriber information from a data string transmitted when a call setup request is received from a base station. do.

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

First, when call originating subscriber receives call request data from a subordinate base station (ST1), the processor 103 reads the subscriber subscriber data and the called subscriber information from the received call request data sequence and stores the subscriber information storage unit ( 108) (ST2).

Subsequently, the processor 103 transmits data requesting the type of the called subscriber to the base station to which the called subscriber is bound based on the called subscriber information stored in the subscriber information storage 108 in step ST2 (ST3).

Thereafter, the processor 103 determines whether the called party type data has been received from the base station to which the called party is attached (ST4). When it is determined that the called party type data has been received, the processor 103 stores the subscriber type information. The calling party type stored in the section 108 is compared with the received called party type (ST5).

As a result of comparing the calling party type and the called party type in step ST5 (ST6), if it is determined that the types of both subscribers match, the processor 103 performs all procedures according to call setup. The communication resource used for the connection is allocated to both base stations (ST7).

Subsequently, the processor 103 clears the information on the caller / caller of the caller / caller type information stored in the subscriber type information storage unit 108 and returns to the initial state (ST8).

On the other hand, if it is determined in step ST6 that the type of the calling subscriber and the type of the called subscriber match, the types of both subscribers are not matched, the processor 103 cannot set the call stored in the guide message storage 105. The message is read and sent by the calling subscriber to the subsidiary station (ST9).

For example, if the type of outgoing subscriber is voice data, that is, a telephone, the subscriber station incorrectly judges the fax number as a telephone number and requests a call setup to the central station. In this case, since the type of the calling party and the type of the called party do not match, a call setup impossible message is sent to the calling party.

That is, when call request data is received from the base station to which the subscriber is bound, the central station compares and checks the type of originating / receiving subscriber on the basis of the received call request data. Based on the information, the called party requests the base station to which the called party is bound, and compares the called party type and the calling party type received from the base station to which the called party belongs. Allocates communication resources according to the settings.

Therefore, it is possible to prevent allocation of communication resources due to unnecessary call setup.

In addition, this invention is not limited to the said Example, It can implement in a various deformation | transformation in the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, when the calling party requests the call setup from the subsidiary base station, the calling party checks and compares the types of the called subscribers and allocates the communication resources according to the call setting only when the calling party type and the called party type match. By doing so, it is possible to prevent waste of communication resources due to unnecessary call setup.

Claims (2)

In the satellite communication system for providing communication between subscribers by combining a plurality of base stations combined with a plurality of subscribers via satellite, A guide message storage unit for storing guide messages related to call setup, A base station information storage unit for storing state information of the base station; Channel information storage unit for storing the use state of the communication channel allowed by the satellite, A subscriber type information storage unit for storing the type data indicating the terminal type of the calling subscriber and the called subscriber information read out from a predetermined data string transmitted when the call is set up from the base station; When call request data is received from the base station to which the subscriber is bound, the call request data is read out from the received call request data and indicates the terminal type of the called subscriber transmitted from the base station to which the called party is attached. Comparing the data with the distillation data of the calling subscriber, the communication resource allocating apparatus in the satellite communication system, characterized in that it comprises a processor for controlling to allocate the communication resources according to the call set-up only when the type data of both subscribers are matched. . In the satellite communication system providing a communication between subscribers by combining a plurality of base stations to which a plurality of subscribers are coupled through a satellite, A subscriber information storage step of obtaining and storing data indicating the terminal type of the calling subscriber and subscriber subscriber information from a predetermined call request data string received from the base station upon request for call setup; A called subscriber information request step of requesting data indicating the terminal type of the called subscriber to a base station to which the called subscriber is bound based on the called subscriber information stored in the subscriber information storing step; Receiving subscriber type data for receiving subscriber type data from the base station with respect to subscriber type data sent to the base station in the requesting subscriber information request step, A subscriber type data comparing step of comparing the type of the called subscriber type data received in the receiving subscriber type data receiving step with the type of subscriber subscriber data stored in the subscriber information storing step; A call setup step of allocating communication resources used for call setup only when the type data of the originating subscriber and the called subscriber is matched in the subscriber type data comparison step; In the subscriber type data comparison step, if the type data of the calling subscriber and the called subscriber do not match, the calling subscriber cannot send a call setup impossible message to the predetermined base station. Communication resource allocation method in a satellite communication system.

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