Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
1999-05-12
2001-12-04
Urban, Edward F. (Department: 2683)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S067150, C370S241000
Reexamination Certificate
active
06327467
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to digital mobile communication system, more particularly to a method for computing maximum traffic capacitance of a base station using a virtual call in the digital mobile communication system in such a way that an operator at operating terminal for Base Station Manager (BSM) inputs call-set-request-instructions using the virtual call to maintain and repair the digital mobile communication system so that traffic state is set between mobile stations in the service area of a test base station and a vocoder of a Base Station Controller (BSC) to compute maximum traffic capacitance of the test base station.
BACKGROUND OF THE INVENTION
As a rule, maximum mobile station number being on service in a particular base station may be calculated manually through Mobile Switching Center (MSC) that processes call setting and switching of a traffic path, in the state of directly maintaining traffic either between test mobile stations or the test mobile stations and fixed subscribers in such a way that system operators set up the test mobile stations in the service area of the base station and provide communication service to general users to measure maximum traffic capacitance of the base station.
In the above case, however, a number of operators are needed to set the multiple mobile stations to a traffic state and it must be inevitably carried to monitor the existence of the mobile stations being abruptly cut from the traffic state and again make the cut mobile station to the traffic state. Therefore, many operators are needed to calculate maximum traffic capacitance of the base station, which results in difficulty in traffic calculation.
U.S. Pat. No. 5,583,792 shows network traffic analysis, which comprises the steps of receiving real traffic data, computing a steady state distribution function and power spectral function from the data, generating a stochastic model of a nonnegative rate random process using frequency domain techniques, inputting the nonnegative rate random process in a queue of the network node, performing queuing analysis on the queue and constructing the network node using the design of the network node. This technique, however, causes traffic computation to be difficult and complex because of receiving real traffic data, providing a traffic model and analyzing the same by means of stochastic access.
SUMMARY OF THE INVENTION
Therefore, the present invention has been made in view of the above mentioned problems, and an object of the invention is to provide a method for computing maximum traffic capacitance of a base station using a virtual call in a digital mobile communication system, which outputs the mobile station numbers on service to an operator whenever the mobile station numbers are changed on whether a call set has completed or not based on the virtual call and sends a call-set-request until the operator issues call-set-stop-instruction or the call set has completed as to the mobile stations being failed in call setting, so that the maximum traffic capacitance can be computed with ease for the operator to recognize present maximum traffic numbers on service and thereby to reduce the number of operators to participate in a test.
In accordance with one aspect of the invention, there is provided a method for computing maximum traffic capacitance of a base station using a virtual call in a digital mobile communication system comprising the steps of: (1) inputting and storing information for test mobile stations to a call set managing data base of Base Station Manager (BSM) to compute maximum traffic capacitance of the base station; (2) setting virtual calls to the mobile stations using instructions according to call type to set; (3) renewing the data base for the test mobile stations and outputting mobile station numbers on service; and (4) outputting statistics for mean maximum traffic capacitance of the test mobile stations.
In the one aspect, the step (2) further comprises the steps of: (1) initializing the call set managing data base and a maximum traffic capacitance computing data base for each mobile station upon request for a virtual call-set-start-instruction from an operator; (2) identifying whether a call-set-start-flag is set as start; and (3) when the call-set-flag was set as start, sending by the BSM a packet having the call-set-information for the test mobile stations in the call set managing data base of the BSM and virtual call type information to request call set to Call Control Processor(CCP), sending by the CCP a call-set-request-message to Base Transceiver Station Control Processor (BCP), and sending by the BCP information on whether the call set has completed to the CCP after performing action for setting call.
REFERENCES:
patent: 5095500 (1992-03-01), Tayloe et al.
patent: 5425076 (1995-06-01), Knippelmier
patent: 5481588 (1996-01-01), Rickli et al.
patent: 5583792 (1996-12-01), Li et al.
patent: 6052584 (2000-04-01), Harvey et al.
Choi Jae Hwan
Jeong Jae Yong
Yang Seung Bong
Hyudai Electronics Industries Co., Ltd.
Merchant & Gould P.C.
Urban Edward F.
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