KR20020046815A - Method of rejecting a call request of an unknown calling part number in Wireless Communication System - Google Patents

Abstract

PURPOSE: A method for denying the reception of an anonymous call in a wireless communication system is provided to carry out caller ID presentation service and caller ID protection service at the same time and to prevent an enforcing purpose of caller ID presentation service from being discolored. CONSTITUTION: In case that a call request is received through a PSTN(S1), an MSC(Mobile Switching Center) checks whether a calling number record from a calling network has a PI value(S2). In case that the calling number record has a PI value, the MSC judges whether the requested call is a call request from a restricted number or an unavailable number(S3). If the PI value of the calling number record is "0", the MSC provides the calling number of the "CHARi" field of the calling number record to the called subscriber's mobile station(S4) and makes the calling number displayed(S5). However, if the PI value does not exist or it is "1" or 2", the MSC transmits a preset announcement to the caller(S6) or connects the call to the called subscriber's VMS(Voice Message System)(S7). Then the MSC provides a message to inform the called subscriber that a call request has been generated from an anonymous caller(S8).

Description

Method of rejecting a call request of an unknown calling part number in Wireless Communication System}

The present invention relates to a wireless communication service method. In particular, the present invention relates to a rejection method for an anonymous call that rejects a call request when a caller number is not confirmed when providing a caller identification service in a wireless communication service system.

Current mobile communication service providers provide a caller identification service that indicates a caller's number to a receiver's terminal when a call request is received. This caller identification service is limited in terms of privacy, and by adding caller protection services such as Line Blocking or Call Blocking, which prevents the caller's number from being sent when the caller desires it. We carry out. However, if the caller protection service such as Line Blocking or Call Blocking is performed at the same time as the caller verification service, the caller ID may not be known when there are many recipients. There is a problem that is weakened.

Therefore, there is a need for a method capable of preventing the implementation of the caller identification service from fading while simultaneously performing the caller identification service and the caller protection service.

Accordingly, the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide anonymity in a wireless communication system capable of preventing the implementation of the caller identification service from fading while simultaneously performing the caller identification service and the caller protection service. It is to provide a call reject method.

In order to achieve the above objects, in the wireless communication system according to the present invention, a method for rejecting an anonymous call includes: a) determining whether a PI value exists in caller ID information from a call request network;

b) if there is a PI value in the caller number information, determining whether a call requested from the call request network is a call request from a calling number restriction or an unidentified calling number based on the PI value; And

c) the voice mailbox of the subscriber who requested the call, if no PI value exists in the caller ID information in step a) or if the call is determined to be a caller ID restricted or unidentified caller number in step b); It characterized in that it comprises the step of connecting the call. Also preferably, the method may include d) if a PI value is not present in the caller ID information by step a) or if the call is determined to be a calling number restriction or unknown caller number by step b). Providing a message informing the terminal of the subscriber who has been requested to call that there is a call request from an anonymous caller.

According to the present invention, when the caller is not confirmed, the caller verification service and the caller protection service can be provided by connecting the caller to the voice message of the subscriber who has been requested to call or the subscriber's voice message mailbox, and also providing the subscriber with a message informing the anonymous call request. At the same time, it is possible to prevent the fading of the purpose of the caller verification service.

1 is a diagram illustrating a wireless communication service system to which the present invention is applied.

FIG. 2 is a flowchart illustrating a method for rejecting anonymous call reception in a wireless communication system of the wireless communication service system shown in FIG. 1.

<Explanation of symbols for main parts of drawing>

120: base station 125: MSC

160: HLR170: mobile terminal

190: VMS

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

1 is a diagram illustrating a wireless communication service system to which the present invention is applied.

Referring to FIG. 1, a wireless communication service system to which the present invention is applied includes an MSC, a base station 120, an MSC 125, an HLR 160, and a voice message system (VMS) 190.

The base station 120 includes a transmission equipment, a BTS 121, and a BSC 123 necessary for network connection. These may be formed together in the same place or may be installed and operated in separate places. However, in the present invention, since there is no need to distinguish them, they are grouped together to be referred to as the base station 120.

The HLR 160 stores information about allocated subscriber mobile terminals 170, including location information and service information, in its database (not shown). In addition, the database of the HLR 160 stores information on whether to subscribe to a caller identification service of each of the mobile terminals 170 in the service subscription information file according to the present invention.

The VMS 190 provides a voice mailbox to the subscriber and generates various voice messages in response to a request signal from the MSC 125.

The Mobile Switching Center (MSC) 125 interfaces user calls from a wireless network to a wired network or other wireless networks. The MSC 125 may be connected to a plurality of base stations. The MSC 125 according to the present invention checks through the subscriber profile of the HLR 160 whether a call requesting subscriber is a caller identification service subscriber when receiving a call request from another communication network, for example, a PSTN. When the call request subscriber is a caller verification service subscriber, the MSC 125 confirms the presence of a caller's calling number identification presentation (CNIP). For example, the CNIP is provided through "Calling Number Record" provided through "Alert with information message (Idle status)" or "Flash with information message (Traffic)" in case of IS-95A. Details of the "Calling Number Record" are shown in Table 1 below.

Type-specific fields Length (bits) Remarks NUMBER_TYPE 3 Type of number NUMBR_PLAN 4 Numbering plan PI 2 Presentation indicator SI 2 Screening indicator CHARi 8 × n (variable) number RESERVED 5 Spare

Table 1. Caller ID information

That is, when the subscriber is a caller identification service subscriber, the MSC 125 checks whether a PI value exists in the caller ID presence indication field of the caller ID information. If the PI value does not exist, the MSC provides the call requester with a message indicating that the subscriber who has requested the call is a calling party number service subscriber. Advantageously, the MSC 125 connects the call to the voice mailbox of the subscriber's VMS 19O. On the other hand, at the same time, the MSC 125 provides a message to the mobile station of the subscriber who has received the call informing that there is a call request from an anonymous caller.

On the contrary, if there is a parameter value (PI value) of the caller number presence indication field of the caller number information, the MSC 125 indicates that a call requested from the call request network based on the parameter value is a calling number restriction number. Or determine whether the call number is unknown. If the call requested from the call request network is a calling number restriction number, the MSC 125 provides the call requester with a message indicating that the caller is a caller number service subscriber. Advantageously, the MSC 125 may connect the call to the voice mailbox of the subscriber's VMS 19O to provide a message to the user's voice. On the other hand, at the same time, the MSC 125 provides a message to the mobile station of the subscriber who has received the call informing that there is a call request from an anonymous caller.

On the contrary, if the call requested from the call request network is an unidentified calling number number, the MSC 125 provides the call requester with a message indicating that the called party is a caller number service subscriber. Advantageously, the MSC 125 connects the call to the voice mailbox of the subscriber's VMS 19O. On the other hand, at the same time, the MSC 125 provides a message to the mobile station of the subscriber who has received the call informing that there is a call request from an anonymous caller.

For example, in an IS-95 system, when the PI value is "0", the MSC 125 provides the subscriber mobile station 170 with the calling party number in the "CHARi" field of the calling party number information. Alternatively, if the PI value is "1" or "2", the MSC 125 determines that the call is a calling number restriction or unknown caller ID, and connects the call to the subscriber's voice mailbox 190. do. Also preferably, the MSC 125 provides a message to the subscriber mobile station 170 receiving the call informing that there is a call request from an anonymous caller.

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

FIG. 2 is a flowchart illustrating a method for rejecting anonymous call reception in a wireless communication system of the wireless communication service system shown in FIG. 1.

Referring to FIG. 2, when receiving a call request through a PSTN, the MSC 125 checks whether a PI value exists in the caller number information from the call request network, and the PI value exists in the caller number information. In this case, it is determined whether the call requested from the call request network is a call request from a calling number restriction or an unidentified calling number based on the PI value (S1, S2, S3).

If the caller ID information has a PI value of "0", the MSC 170 provides the subscriber mobile station 170 with the calling party number of the "CHARi" field of the calling party number information, so that the mobile station 170 can receive the caller ID information. Caller ID is displayed on the display (S4, S5).

Alternatively, if the PI value does not exist in the caller ID information, or if the call is determined to be Called Number Restricted (PI = 1) or Unavailable (PI = 2), the MSC 125 ) Transmits a prepared announcement to the caller, or connects the call to the voice mailbox 190 of the subscriber who has requested the call. Then, the mobile station of the subscriber who has received the call is provided with a message indicating that there is a call request from an anonymous caller.

Therefore, according to the above configuration, when the caller is unconfirmed, the caller verification service and the caller protection are provided by connecting the caller to the subscriber's voice message or the subscriber's voice message mailbox, and also providing the subscriber with an anonymous call request. It is possible to prevent the fading of the purpose of the caller verification service while simultaneously performing the service.

As described above, according to the present invention, an anonymous call reception method can be realized in a wireless communication system which can prevent the fading of the purpose of implementing the caller identification service while simultaneously performing the caller identification service and the caller protection service.

Although the present invention has been described in detail by the above embodiments, the present invention is not limited thereto, and variations and improvements can be made without departing from the ordinary knowledge of those skilled in the art.

Claims (7)

a) determining whether a parameter value of a caller number present indication field of caller number information from a call request network exists; b) if the parameter value of the calling party number presence indication field of the calling party number information does not exist by step a), connecting the call to a voice mailbox of the subscriber who has requested the call. How to opt out of anonymous calls in communication systems. 2. The method of claim 1, wherein the caller ID presence indication field is a PI field in the IS-95 standard. 2. The method of claim 1, wherein the method further comprises: c) providing a message informing the mobile station of the subscriber that has been requested the call that there is a call request from an anonymous caller if the parameter value does not exist by step a). An anonymous call reception method in a wireless communication system, further comprising a. The method of claim 1 wherein the method is d) determining whether a call requested from the call request network is a calling number restriction number, based on the parameter value, if a parameter value of the calling party number presence indication field of the caller number information exists; And e) if the call requested from the call request network in step d) is a calling number restriction number, further comprising connecting the call to the voice mailbox of the subscriber who has requested the call. To opt out of anonymous calls on Windows. The method of claim 4, wherein the method f) if the call requested from the call request network by step d) is a calling number restriction number, providing a message informing the mobile station of the subscriber who has requested the call that there is a call request from the caller of the calling number restriction. An anonymous call reception method in a wireless communication system, further comprising a. The method of claim 1 wherein the method is g) determining whether a call requested from the call request network is an unidentified calling number based on the parameter value, if a parameter value of the calling party number presence indication field of the calling party number information exists; And h) if the call requested from the call request network by step g) is an unidentified calling number number, connecting the call to a voice mailbox of the subscriber who has requested the call. To opt out of anonymous calls on Windows. The method of claim 6, wherein the method i) if the call requested from the call request network by step g) is an unidentified calling number number, providing a message indicating that there is a call request from an anonymous party to the mobile station of the subscriber who has requested the call; An anonymous call reception method in a wireless communication system, characterized in that.