KR20050120334A - Flexible paging device of the mobile communication system using a pre-paging and controlling method - Google Patents

Abstract

The present invention provides an MSC for verifying whether an incoming / outgoing call signal of a mobile communication terminal is connected to the called terminal through an FP method and connected to an actual RF path through a prepage method, and a call view may be requested from the mobile communication terminal. In this case, the roaming number request signal requires a roaming number to all MSCs related to the called terminal, and according to the result, prepage is composed of an HLR that selects and manages only one MSC connected to the called terminal and the actual RF path by the prepaging (PP) method. Provided is a flexible paging device for a mobile communication system.

In the present invention as described above, the home location register for the terminal receiving the call request requests a response signal to all MSCs in a prepaging manner, and determines the response result to determine the incoming MSC to which the actual terminal is RF-connected to connect the call. Thus, when there is a call request from the originating MSC, since the subscriber terminal attempts to call only the called MSC in which the originating MSC is actually located, it does not waste unnecessary relay line resources, thereby reducing the load on the mobile communication system.

Description

Flexible paging device of the mobile communication system using a pre-paging and controlling method

The present invention relates to a flexible paging device of a mobile communication system using prepage and a control method thereof. In particular, a home location register for a terminal receiving a call request requests a response signal to all MSCs in a prepaging manner. The present invention relates to a flexible paging apparatus of a mobile communication system using a pre-paging system in which an actual terminal determines an incoming MSC connected to an RF, and connects a call.

In general, in the early 1980s, mobile communication system divided service area into hexagonal cells of several km to several ten kilometers in diameter in North America, and then repeatedly used the same frequency channel in geographically separated cells, Cellular phones (cellular-phones), which have implemented wireless channel switching, have grown rapidly in the first commercialization. In addition, such a mobile communication system includes a plurality of mobile communication base stations for a subscriber having a terminal to smoothly communicate with other communication subscribers in a long distance using a mobile communication network. The base station transmits and receives the signal of the terminal, amplifies the signal at a predetermined level, and connects the signal to a desired communication network.

However, such a mobile communication system generally adopts a flexible paging (FP) method, and the FP method has a variety of causes, for example, due to the fact that the position of the terminal does not change but the area of the jurisdiction cell is changed due to shaking of radio waves. As a result, a case where a location is simultaneously registered in two or more different mobile switching centers (hereinafter referred to as MSCs) is attempted. Selects an MSC that is a normal response to execute a call and releases the remaining MSC calls.

Then, referring to FIG. 1, a mobile communication system using the conventional FP method as described above, an MSC 71A-N for processing a call signal of a terminal 71A-B located in an area of its own network, and the MSC 71A. A home location register (HLR) 72 connected to N) to manage mobility information of a terminal of the own network.

On the other hand, referring to the operation of the mobile communication system using the conventional FP method as described above, first, the terminal 70 attempts to call the other terminal 72 via the originating MSC 71, as shown in FIG. . Then, the originating MSC 71 requests the location information inquiry of the counterpart terminal 72 from the HLR 73 (MAP SRI req). At this time, when the other terminal 72 confirms that the counterpart terminal 72 is registered as an FP subscriber, the HLR 73 makes a roaming number request simultaneously with the destination MSC 74 and another destination MSC 75 (MAP PRN req). ). Then, the destination MSCs 74 and 75 confirm that the corresponding terminal 72 is registered and assign a roaming number, and then each of the destination MSCs 74 and 75 are roamed to the HLR 73. Send the number [MAP PRN ack (msrn_b, msrn_c)]. At this time, the HLR 73 delivers roaming numbers to the originating MSC 71 [MAP SRI ack (msrn_b, msrn_c)]. The originating MSC 71 then attempts to make a call connection between the destination MSC 74 and another destination MSC 75 [ISUP IAM (msrn_b), ISUP_IAM (msrn_c)]. At this time, the called MSC 74 and another called MSC 75 each attempt a paging request to the called terminal 72 (Page req).

Here, the response process is a paging response only from the destination MSC 74 connected to the terminal 72 by the actual RF (Page resp), and the other destination MSC 75 not connected to the terminal 74 is paging timed out. . Then, the incoming MSC 74 informs the originating MSC 71 that the subscriber verification is completed and the response to the MS is being requested [ISUP ACM]. At this time, the originating MSC 71 confirms that the terminal 72 in the terminating MSC 74 is an actual subscriber and that the terminal in the other terminating MSC 75 is a false subscriber. In other words, the subscriber confirms that it is currently connected to the incoming MSC (74). The originating MSC 71 requests the end of the call to the MSCc (ISUP REL) and informs that the terminal 72 has responded to the originating MSC 71 at the destination MSC 74 (ISUP ANM). Then, a call is connected between the terminal 70 and the terminal 72.

However, in the mobile communication system using the conventional FP method, when the called subscriber is registered with multiple MSCs in a redundant location, all of the caller's resources must be called from the originating MSC to the destination MSCs. In addition, since it is a method of attempting multiple calls from the originating MSC to the destination MSCs, the processing process is complicated when interworking with the intelligent network service and the supplementary service, thereby increasing the network service cost.

Therefore, the present invention was invented to solve the above conventional problems, and when there is a call request from the originating MSC, the subscriber station attempts to call only the incoming MSC where the subscriber station is actually located in the originating MSC so that unnecessary relay line resources are not wasted accordingly. SUMMARY OF THE INVENTION An object of the present invention is to provide a flexible paging apparatus for a mobile communication system and a control method thereof using pre-paging to reduce the load on the mobile communication system.

Another object of the present invention is because the originating MSC attempts to call only the actual incoming MSC that requested the call, so it is processed through a simple process even when interworked with the intelligent network and the supplementary service network. The present invention provides a flexible paging device for a mobile communication system and a control method thereof.

In the present invention for achieving the above object in the FP mobile communication system for processing a call of the mobile communication terminal through a mobile communication network,

MSC for calling / receiving the call signal of the mobile communication terminal by FP method and checking whether the mobile terminal is connected to the called terminal through the pre-phasing method through an actual RF path, and roaming when a call view is requested from the mobile communication terminal. Pre-paging including HLR which requests roaming number to all MSCs related to called terminal with number request signal and selects and manages only MSC connected to called terminal and actual RF path by pre-paging method according to the result. Provided is a flexible paging device for a mobile communication system.

Another feature of the present invention is that when there is a call request of a terminal in a mobile communication system, the HLR requests a roaming number to all MSCs in which the requested terminal is located and the related MSCs each request a paging signal to the called terminal. After the paging signal processing step and the paging response signal is not received from the corresponding terminal that is called after the pre-paging signal processing step for a certain period of time, after confirming that it is not the MSC connected to the actual RF path to the terminal and then paging time Paging timeout processing step of executing out, and if the paging response signal is received from the corresponding terminal requested to be called after the pre-paging signal processing step, the actual incoming MSC to determine that it is the MSC connected to the actual RF path with the terminal Step and the actual RF path connection after the actual incoming MSC discrimination step The roaming number transmission step of assigning the roaming number to the corresponding terminal by the called MSC and transmitting the allocated roaming number information to the HLR; The present invention provides a control method of a flexible paging apparatus of a mobile communication system using pre-paging, which consists of a call connection execution step of transmitting and performing a call connection with the called MSC and the called MSC actually connected by RF as a result.

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

According to the present invention, as shown in FIG. 2, a mobile communication terminal (1, 2) for performing a voice call or data communication through a mobile communication network and a call signal of the mobile communication terminal (1, 2) are issued in an FP method. MSC (3a-n) to check whether the incoming terminal is connected to the called terminal and the actual RF path through the pre-phasing scheme, and roaming number request when a call view is requested from the mobile communication terminal (1,2) HLR (4) which requests roaming number to all MSC (3a-n) related to calling terminal and selects and manages only MSC connected to called terminal and actual RF path by pre-paging method according to the result It includes.

Here, between the originating MSC 3a and the destination MSC 3b-c is an ISUP (ISDN USER PART) section, and the destination MSCs 3b-c and the HLR 4 are a Mobile Application Protocol (MAP) section.

Next, the method of the present invention applied to the mobile communication system as described above will be described.

In the method of the present invention, as shown in Fig. 3, the initial state (S1) proceeds to the call connection attempt step (S2) and the terminal wants to make a call to the destination MSC via the originating MSC. After the call connection attempt step (S2), the process proceeds to the paging signal processing step (S3) and requests a roaming number to all MSCs whose HLR is called by the terminal whose location is registered, and the related MSCs each page to the called terminal. Ask for a signal. In addition, after the paging signal processing step (S3), the process proceeds to the paging response signal determination step (S4) to determine whether a paging response signal is received from the corresponding terminal requested for the call. At this time, if the paging response signal is not received from the corresponding terminal requested to be called during the paging response signal determination step (S4), after waiting for a predetermined time to proceed to the actual incoming MSC determination step (S5) and the terminal itself and the actual RF Verify that the path is not an MSC and run a paging timeout.

However, when the paging response signal is received from the terminal requesting the call as a result of the paging response signal determination step (S4), the process proceeds to the actual incoming MSC determination step (S5) and the MSC is connected to the terminal via the actual RF path. After confirming that the roaming number transmission step (S6) proceeds. In the roaming number transmission step (S6), the called MSC connected to the terminal via the actual RF path allocates a roaming number to the corresponding terminal and transmits the allocated roaming number information to the HLR. Then, after the roaming number transmission step (S6) to proceed to the HLR processing step (S7) to transfer the roaming number of the terminal received from the destination MSC in the HLR to the originating MSC. Then, after the HLR processing step (S7) proceeds to the call connection execution step (S8) to execute the call of the terminal through the call connection with the calling MSC actually connected to the calling MSC and the called terminal and RF.

That is, the terminal 1 attempts to call the other party terminal 2 via the originating MSC 3a. Then, the originating MSC 3a requests the position information inquiry of the counterpart terminal 2 from the HLR 4 (MAP SRI req). At this time, when the HLR 4 confirms that the other terminal 2 is registered as an FP subscriber, the HLR 4 requests a roaming number simultaneously with the called MSC 3b and another called MSC 3c at the same time. Incoming MSCs 3b-c request pre-paging for the terminal 2 (MAP PRN req). At this time, the called terminal 3b actually connected to the corresponding terminal 2, which has been called by the called MSCs 3b-c, receives a paging signal from the corresponding terminal 2, but is actually connected by RF. Incoming incoming MSCs 3c do not receive a paging response signal from the terminal 2 (Page resp). Then, the incoming MSCs 3c that do not receive the paging response signal from the terminal 2 in which the call is requested execute a paging timeout. However, the receiving MSC 3b, which has received the paging response signal from the terminal 2 requesting the call, allocates a roaming number to the corresponding terminal 2 and transmits the assigned roaming number to the HLR 4 [MAP]. PRN ACK (MSRN_b), and the HLR 4 forwards the received roaming numbers to the originating MSC 3a [MAP SRI ack (msrn_b)].

On the other hand, the originating MSC (3a) attempts to establish a call between stations to the destination MSC (3b) after grasp the roaming number ISUP IAM (msrn_b). At this time, the called MSC (3b) informs the originating MSC (3a) that the subscriber confirmation is complete and the response request to the terminal (2) (ISUP ACM). When the called MSC 3b announces that the terminal 2 called by the originating MSC 3a has answered, a call is connected and a normal call is executed.

As described above, in the present invention, a home location register for a terminal receiving a call request requests a response signal to all MSCs in a pre-phasing manner, and determines the response result to determine an incoming MSC to which an actual terminal is RF-connected. By linking with the call, when a call request is made from the originating MSC, the subscriber station in the originating MSC attempts to call only the incoming MSC that is actually located, thereby reducing the load of the mobile communication system by not wasting unnecessary relay line resources.

In addition, according to the present invention, since the originating MSC attempts the call only to the actual destination MSC that requested the call, even if it is linked with the intelligent network and the supplementary service network, it is processed through a simple process, thereby reducing unnecessary connection costs. .

1 is an explanatory diagram illustrating a conventional mobile communication system having a conventional fp function.

2 is an explanatory diagram illustrating an apparatus of the present invention.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: mobile communication terminal 2: mobile communication terminal

3a: Outgoing MSC 3b-n: Incoming MSC

4: HLR

Claims (2)

In the mobile communication system of the FP method for processing a call of the mobile communication terminal through a mobile communication network, MSC for calling / receiving the call signal of the mobile communication terminal by FP method and checking whether the mobile terminal is connected to the called terminal through the pre-phasing method through an actual RF path, and roaming when a call view is requested from the mobile communication terminal. It includes a HLR requesting a roaming number to all MSCs related to the called terminal by the number request signal, and selecting and managing only one MSC connected to the called terminal and the actual RF path by the pre-paging method according to the result. Flexible paging device of a mobile communication system using a pre-paging. In the mobile communication system, when there is a call request of a terminal, the HLR requests a roaming number to all MSCs in which the requested terminal is located and the related MSCs request a paging signal to the called terminal. And a paging time when the paging response signal is not received from the corresponding terminal requested to be called after the pre-paging signal processing step for a predetermined period of time, and then the paging timeout is executed after confirming that the terminal is not an MSC connected to the actual RF path. An outgoing step, and an actual incoming MSC discrimination step of confirming that the MSC is connected to the terminal through an actual RF path when a paging response signal is received from the corresponding terminal requested to be called after the pre-paging signal processing step; After the MSC discrimination step, the called MSC connected to the terminal through the actual RF path Roaming number transmission step of assigning a roaming number to the device and transmitting the assigned roaming number information to the HLR, and after the roaming number transmission step, the roaming number of the terminal received from the destination MSC in the HLR is transmitted to the originating MSC A method of controlling a flexible paging device of a mobile communication system using pre-phasing, comprising: a call connection execution step of executing a call connection with an originating MSC and a called MSC actually connected by RF with a called terminal.