KR20030092920A - Method for load controlling of MSC in mobile communication system - Google Patents

Abstract

PURPOSE: A method for controlling MSC load in a mobile communication system is provided to distinguish a subscriber authentication process in an MSC by location registration, transmission, and reception, and to perform the subscriber authentication process according to each period, thereby controlling the MSC load at authentication period. CONSTITUTION: When location registration information is necessary(ST11), a system checks an entire authentication activated state of an MSC(ST12). If the MSC is inactivated, the system requests the location registration information of an LRP(Location Register Processor)(ST13). If the MSC is activated, the system confirms an authentication activated state for location registration(ST14). If so, the system checks whether the location registration is performed according to an authentication period(ST15). If so, the system performs an authentication function(ST16), and checks whether the authentication function is successful(ST17). If so, the system requests the location registration information(ST13), and if not, the system informs of a location registration failure(ST18).

Description

Switching load control method in mobile communication system {Method for load controlling of MSC in mobile communication system}

In the present invention, when performing an authentication function in a mobile communication system, authentication for a subscriber in a switch is divided into location registration, origination, and incoming calls, and an authentication procedure for any subscriber is performed according to each cycle, thereby making the load in the switch into an authentication cycle. The present invention relates to a method for load control of an exchange in a mobile communication system that can be controlled, and in particular, by adjusting an execution cycle for each authentication type in the exchange through a command and setting an authentication cycle for location registration, origination, and reception in the exchange. Switch load control in a mobile communication system in which the subscriber's load can be controlled by selectively executing the authentication function only in the input period of the command without performing authentication function whenever the subscriber attempts to register, send, and receive a location. It is about a method.

In general, a mobile communication system is connected to a mobile station (MS, Mobile Station), which is a mobile subscriber device that can be mounted on a vehicle or carried by a user to terminate a wireless line, and connects a wireless line and a wired network line. Multiple mobile stations can be connected through a line, and the wired network line is connected to a switch (MSC) as a PCM (Pulse Code Modulation) channel and a wired network line. Base station (BS) that performs control function to control connection and transmission function to terminate wireless line, and as the center of network, exchange among mobile subscribers, mobile subscriber and public telephone exchange network, comprehensive information communication network Mobile Switching Center (MSC) that provides the exchange function of fixed network subscribers, and mobile stations in the area A visitor location register (VLR) which temporarily stores all information and transmits the information to the exchange at the request of the exchange when the mobile subscriber sets up a call, and all registered in his mobile network. It consists of a Home Location Register (HLR) that stores and manages subscriber parameters and location information for mobile stations.

In addition, the exchange needs an information exchange function with a home location register (HLR) and a visitor location register (VLR) storing subscriber information in order to perform the above functions according to the call request of the subscriber. Differently, should have a function corresponding to the mobility characteristics of the mobile subscriber.

In addition, the information in the visitor location register must continue to be modified as the mobile station moves, and the data associated with the home location register must always remain the same.

In addition, at least one home location register must exist in each mobile communication network, and must register important data such as access capability, basic service, and additional service of the mobile station to the home location register, and perform routing function to the called subscriber. .

On the other hand, the authentication function in the mobile communication system as described above refers to a procedure for confirming the usefulness of the terminal from the authentication center before performing call processing for location registration, origination, and reception.

Here, in the related art, every subscriber existing in the exchange performs an authentication function whenever attempting location registration, origination, and reception.

Therefore, when the authentication procedure is added to the basic call processing process, the load in the exchange increases, and performing the authentication function according to the conventional method has a problem in that the load is further increased in the exchange.

Accordingly, the present invention is proposed to solve the above problems of the prior art,

An object of the present invention, when performing the authentication function in the mobile communication system, by performing authentication procedure for any subscriber according to each period by distinguishing the authentication of the subscriber in the exchange into the location registration, origination and incoming, thereby reducing the load in the exchange The present invention provides a method for load exchange switching in a mobile communication system that can be controlled by an authentication cycle.

The present invention for achieving the above object,

After setting the authentication period for the location registration and call / call executed in the exchange through the command, and performs the authentication function for the subscriber corresponding to the authentication period,

When performing the authentication function, it is characterized in that the authentication for the subscriber in the switch by distinguishing the location registration, call / incoming calls and selectively performs the authentication function for any subscriber according to each authentication cycle.

In addition, the location registration process according to the authentication cycle of the present invention for achieving the above object,

When the location registration information is required, checking the entire authentication activation state of the exchange;

If the check result is inactivated, requesting location registration information from a corresponding location register processor (LRP); if the check result is activated, confirming an authentication activation state for location registration;

If the check result is inactive, requesting location registration information from the corresponding LRP; if the check result is activated, checking whether the location registration corresponds to an authentication cycle;

If the check result does not match the authentication cycle, requesting location registration information with the corresponding LRP, and if the check result matches the authentication cycle, performing an authentication function;

Checking whether the authentication function succeeds after performing the authentication function;

When the check result authentication is successful, the location registration information is requested to the corresponding LRP, and if the check result authentication is characterized in that the configuration of the method comprising the step of notifying the location registration failure.

In addition, the outgoing / incoming call processing according to the present invention authentication cycle for achieving the above object,

When the calling (incoming) subscriber information is required, checking the entire authentication activation state of the exchange;

If the check result is inactivated state, requesting outgoing (incoming) subscriber information to the corresponding LRP; if the check result is activated, checking the authentication activation state for the outgoing (incoming);

If the check result is deactivated, requesting outgoing subscriber information to the corresponding LRP, and if the check result is activated, checking whether the call (incoming) corresponds to the authentication period;

Requesting outgoing (incoming) subscriber information to the corresponding LRP when the check result does not match the authentication cycle, and performing an authentication function when the check result matches the authentication cycle;

Checking whether the authentication function succeeds after performing the authentication function;

If the check result authentication is successful, the calling (incoming) subscriber information is requested to the corresponding LRP, if the check result is characterized in that the method consists of a step of notifying the transmission (incoming) failure.

1 is a flowchart illustrating a process of processing an SSD update authentication function according to the present invention;

2 is a flowchart illustrating a process of processing a COUNT update authentication function according to the present invention;

Figure 3 is a flow chart showing a unique attempt authentication function processing process according to the present invention,

4 is a flowchart illustrating a normal processing authentication function processing process according to the present invention;

5 is a flowchart illustrating a location registration process according to an authentication cycle according to the present invention;

6 is a flowchart illustrating a call processing process according to an authentication cycle according to the present invention.

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

BSC ..... Base Station Controller

MSC ..... Mobile Switching Center

VLR ..... Visitor Location Register

AC ..... Authentication Center

Hereinafter, a preferred embodiment of the "switch load control method in a mobile communication system" of the present invention according to the technical concept as described above in detail with reference to the accompanying drawings.

First, when attempting an authentication function from the exchange (MSC) to the authentication center (AC) (AuthenticationRequest), by the authentication center's judgment (authreq) SSD (ShareSecretData) Update (Update), COUNT update, unique attempt And a normal authreq return.

This will be described with reference to the accompanying drawings.

1 is a flowchart illustrating a process of processing an SSD update authentication function according to the present invention.

As shown in the figure, the authentication center transmits authentication parameters (RANDSSD, RANDU, AUTHU) to authreq (AuthenticationRequest, which is used to request authentication of a mobile station capable of performing authentication).

In this case, the RAND (RandomVariable) is a 32-bit random variable that is periodically generated and updated at the exchange and sent to the base station, and is used as an input of a CAVE algorithm for terminal authentication.

In addition, the RANDSSD (RandomVariableSSD) represents a 56-bit random value used as an input of the CAVE algorithm to generate an SSD.

In addition, the SSD (ShareSecretData) includes the SSD-A used for authentication, and the SSD-B used for VP and SME, and the SSD is calculated by the authentication center (AC) and the mobile station (MS).

In addition, the RANDU (RandomVariableUniqueChallenge) represents a 24-bit random value used as an input of a CAVE algorithm for authentication of a specific terminal.

In addition, the AUTHU (AuthenticationResponseUniqueChalleng) represents an 18-bit response value of the mobile station calculated by CAVE using SSD and RANDU for a unique attempt request.

On the other hand, when the exchange transmits the RANDSSD value to the terminal, the terminal generates a RANDBS value and requests confirmation from the authentication center before updating the SSD value. This function is BSCHALL.

Here, RANDBS (RandomVariableBaseStation) represents a 32-bit random value used as an input of the CAVE algorithm for base station challenge authentication.

The BSCHALL (BaseStationChallenge) is also used to request a response to a base station challenge request received from a mobile station.

On the other hand, the BSCHALL requested authentication center (AC) returns the result AUTHBS obtained through the RANDBS to the terminal.

Here, AUTHBS (AuthenticationResponseBaseStation) represents an 18-bit response value calculated by CAVE using NewSSD and RANDBS for the base station challenge authentication request.

On the other hand, the terminal receiving the AUTHBS if the corresponding AUTHBS value is correct, informs the exchange of the success of the SSD update, the exchange receives the exchange using the RANDU, AUTHU value, performs a unique attempt and confirms the AUTHU value raised from the terminal The result is reported to the authentication center by an ASREPORT operation.

2 is a flowchart illustrating a process of processing a COUNT update authentication function according to the present invention.

As shown in the figure, the authentication center transmits an authentication parameter (COUNT) to an authreq (AuthenticationRequest) parameter.

Here, the COUNT (CallHistoryCount) is a 64 modular event counter managed by the terminal and the authentication center (AC), and the event causing the counter is defined by an internal management procedure of the authentication center. May include initial location registration, originating call, incoming call, or periodic increase.

On the other hand, when the exchange transmits the COUNT value to the terminal, the terminal updates the COUNT value and then informs the exchange of the successful COUNT update, and the exchange receives the corresponding result to the authentication center by an ASREPORT operation.

Figure 3 is a flow chart showing a single attempt authentication function processing process according to the present invention.

As shown in the figure, the authentication center delivers authentication parameters (RANDU, AUTHU) to authreq (AuthenticationRequest) parameters.

On the other hand, the UE compares the corresponding AUTHBS value and, if it matches, informs the exchange of the success of the SSD update, and the exchange receives the AUTHU value from the terminal by using the RANDU and AUTHU values, and checks the corresponding AUTHU value. It informs the authentication center by ASREPORT operation.

4 is a flowchart illustrating a normal process authentication function process according to the present invention.

As shown in the figure, the authentication center passes the authreq (AuthenticationRequest) parameter without the contents of the authentication parameter.

That is, in the present invention, when the authentication function as described above in FIGS. 1 to 4 is added, if the authentication procedure is added to the basic call processing process, the load in the exchange is increased. By setting the authentication period for, it is a function to control the load in the exchange by performing the selective authentication function by increasing the authentication period.

In other words, the entire authentication function activation and deactivation function in the exchange determines whether the exchange authentication function is processed when the authentication function for location registration, origination, and reception is requested.

Looking at the authentication function in more detail as follows.

First, selective authentication for location registration according to the present invention,

When the terminal includes the authentication parameters (AUTHR, RAND, COUNT) for the authentication function in the location registration procedure initiated from the terminal, the entire authentication function of the exchange is activated and the location registration authentication procedure is performed only when it is correct. .

That is, the location registration authentication cycle is not a location registration authentication cycle for a specific subscriber, and through location registration executed in the entire exchange, only location registration that matches the period performs the location registration authentication procedure by the location registration authentication cycle.

Next, selective authentication for outgoing according to the present invention,

When the terminal includes authentication parameters (AUTHR, RAND, COUNT) for the authentication function in the originating procedure initiated from the terminal, when the whole exchange function is activated and the authentication function for originating is activated, The outgoing authentication procedure is performed only when the function falls within the outgoing authentication cycle.

That is, the outgoing authentication cycle is not an outgoing authentication cycle for a specific subscriber, and only outgoing authentication cycles performing the outgoing authentication process by the outgoing authentication cycle through outgoing transmissions executed in the entire exchange.

Next, selective authentication for the incoming call according to the present invention,

When the terminal includes authentication parameters (AUTHR, RAND, COUNT) for the authentication function in the incoming procedure started from the terminal, when the whole exchange function is activated and the authentication function for the incoming call is activated, the incoming call Incoming authentication procedure is performed only when the function falls within the incoming authentication cycle.

That is, the incoming authentication cycle is not an incoming authentication cycle for a specific subscriber, and only the incoming call corresponding to the corresponding cycle performs the incoming authentication process by the incoming authentication cycle.

Referring to the accompanying drawings, a process of performing an authentication function for a subscriber corresponding to a cycle by setting a cycle for each location registration, origination, and reception performed in the exchange as described above will be described below.

5 is a flowchart illustrating a location registration process according to an authentication cycle according to the present invention.

As shown in FIG. 11, when the location registration information is required (ST11), a step (ST12) of checking the entire authentication activation state of the exchange is performed. If the check result is inactive, the function of the location register processor (LRP) is checked. Requesting location registration information with a hardware block name in which software for the software is loaded and executed (ST13), and if the check result is activated, confirming an authentication activation state for location registration (ST14); Requesting location registration information to the corresponding LRP if it is in an inactive state (ST13), and checking if the location registration corresponds to an authentication period (ST15) if the check result is activated, and if it is not matched to the authentication period as a result of the check; In the case of requesting the location registration information to the corresponding LRP (ST13), and if the check result fits the authentication cycle, performing the authentication function (ST16), and after performing the authentication function Checking the success or failure of the authentication function (ST17), and if the check result is successful, requesting location registration information from the corresponding LRP (ST13). If the check fails, the location registration fails. Informing step is configured as step ST18.

That is, when the entire exchange function is activated and the location registration authentication function is also activated before the exchange requests the subscriber location information, the subscriber location registration authentication information is requested after confirming the corresponding location registration authentication cycle.

On the other hand, the visitor location register (VLR) receiving the subscriber location registration authentication information request requests the subscriber location information when the subscriber location registration authentication process is normal after processing the authentication request (AuthenticationRequest), and the subscriber location registration authentication process is abnormal. If is, the location registration ends.

6 is a flowchart illustrating a call processing process according to an authentication cycle according to the present invention.

As shown in the figure, when a situation (ST21) where outgoing (incoming) subscriber information is required (ST21), checking the entire authentication activation state of the exchange (ST22), and if the check result is inactive, outgoing (incoming) subscriber to the corresponding LRP Requesting the information (ST23), if the check result is activated, checking the authentication activation state for the origination (incoming call) (ST24); if the check result is inactive, the originating subscriber information is sent to the corresponding LRP. Requesting (ST23), and if the check result is activated, checking whether the corresponding origination (incoming) matches the authentication cycle (ST25); and if the check result does not match the authentication cycle, sending (incoming) subscriber to the corresponding LRP. Requesting information (ST23), and performing the authentication function (ST26) if the check result matches the authentication cycle, checking the success or failure of the authentication function after performing the authentication function (ST27), and check And when the authentication is successful, the request for the calling (called) subscriber information to the LRP (ST23), and if the check result, the authentication has failed, is composed of a step (ST28) indicating the calling (called) fails.

That is, if the whole authentication function of the exchange is activated and the outgoing authentication function is also activated before the exchange requests outgoing (incoming) subscriber information request, after confirming the outgoing authentication cycle, the outgoing (incoming) subscriber authentication information request is issued. do.

On the other hand, the visitor location register that has received the outgoing (receiving) subscriber authentication information request processes the authentication request (AuthenticationRequest), and if the outgoing (incoming) subscriber authentication process is normal, it requests outgoing (incoming) subscriber information, Incoming) If the subscriber authentication process is abnormal, the call is terminated.

According to the present invention described above, the "load switching method in the mobile communication system", by adding a function to adjust the execution cycle for each type of authentication in the switch, all subscribers in the switch attempt to register, send and receive Whenever the authentication function is not performed, the authentication function is executed only in the corresponding input cycle of the command, so that the load of the exchange can be adjusted.

In addition, when performing the authentication function, by adjusting a proper authentication performance period in accordance with the presence of a large number of location registration and call / incoming call in the exchange, there is an advantage that can control the load in the exchange.

Claims (6)

In the load control method of the exchange in a mobile communication system, After setting the authentication period for the location registration and call / call executed in the exchange through the command, and performs the authentication function for the subscriber corresponding to the authentication period, When performing the authentication function, authentication for the subscriber in the exchange is divided into location registration, incoming / outgoing call to selectively perform the authentication function for any subscriber according to each authentication cycle, the exchange load in the mobile communication system How to adjust. The location registration process according to claim 1, wherein If the situation requires the location registration information, checking the entire authentication activation state of the exchange; If the check result is inactive, requesting location registration information from a corresponding location register processor (LRP); and if the check result is activated, checking an authentication activation state for location registration; Requesting location registration information from a corresponding LRP if the check result is inactive; checking whether the location registration corresponds to an authentication cycle if the check result is activated; Requesting location registration information with a corresponding LRP when the check result does not match the authentication cycle, and performing an authentication function when the check result matches the authentication cycle; Checking whether the authentication function succeeds after performing the authentication function; And if the check result is successful, requesting location registration information to the corresponding LRP, and if the check is not successful, indicating the location registration failure. The method of claim 1, wherein the incoming / outgoing call processing according to the authentication cycle is performed. If the situation in which outgoing (incoming) subscriber information is required, checking the entire authentication activation state of the exchange; If the check result is inactive, requesting outgoing (incoming) subscriber information to the corresponding LRP, and if the check result is activated, confirming an authentication activation state of the outgoing (incoming); Requesting outgoing subscriber information to the corresponding LRP if the check result is inactive; checking whether the outgoing call corresponds to an authentication period if the check result is activated; Requesting outgoing (incoming) subscriber information to the corresponding LRP when the check result does not match the authentication cycle, and performing an authentication function when the check result matches the authentication cycle; Checking whether the authentication function succeeds after performing the authentication function; In the mobile communication system comprising the step of requesting outgoing (incoming) subscriber information to the corresponding LRP, if the check result authentication is successful, and notifying the outgoing (incoming) failure if the check result authentication fails; Exchange load control method. The method of claim 2, wherein the authentication for the location registration, When the terminal includes the authentication parameters (AUTHR, RAND, COUNT) for the authentication function in the location registration procedure started from the terminal, the location registration only when the entire authentication function of the exchange is activated and the location registration matches the authentication cycle. It performs the authentication process, the location registration authentication cycle is not a location registration authentication cycle for a particular subscriber, only the location registration that meets the corresponding period through the location registration that is executed in the entire exchange location registration authentication procedure by the location registration authentication cycle Switch load control method in a mobile communication system, characterized in that for performing. The method of claim 3, wherein the authentication for the origination, When the corresponding terminal includes authentication parameters (AUTHR, RAND, COUNT) for the authentication function in the originating procedure initiated from the terminal, the entire authentication function of the exchange is activated, and the authentication function for originating is activated and the corresponding calling function Only when the transmission authentication cycle matches the outgoing authentication cycle, the outgoing authentication cycle is not the outgoing authentication cycle for a particular subscriber. Switch load control method in a mobile communication system, characterized in that for performing the outgoing authentication procedure. The method of claim 3, wherein the selective authentication for the incoming call, When the terminal includes authentication parameters (AUTHR, RAND, COUNT) for the authentication function in the incoming procedure started from the terminal, the whole authentication function of the exchange is activated, and the authentication function for the incoming call is activated and the corresponding incoming function Incoming authentication procedure is performed only when the incoming authentication period is matched, and the incoming authentication cycle is not an incoming authentication cycle for a specific subscriber. Switch load control method in a mobile communication system, characterized in that to perform the incoming authentication procedure by the cycle.