JPH09289673A - Mobile terminal calling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the call termination completion rate of a mobile subscriber present in an area with a possibility to generate a roaming processing by referring to identification information in calling response signals in a mobile access communication network. SOLUTION: The mobile access communication network 11 manages the propriety judgement of the access of a mobile terminal present in a service area 10 and call connection, transmits calling signals including the identification information for identifying the mobile access communication network and exchanges information with the other mobile access communication network corresponding to the received calling response signals. The mobile access communication network 31 manages the propriety judgement of the access of the mobile terminal present in the service area 30 and the call connection, transmits the calling signals including the identification information for identifying the mobile access communication network and exchanges the information with the other mobile access communication network corresponding to the received calling response signals. Subscriber signal are exchanged by a control channel 50 between the respective communication networks 10 and 30. The mobile terminal 70 receives the calling signals from the registered service area and transmits the identification information again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal paging system, and more particularly to a mobile terminal paging system in which a plurality of mobile access communication networks are adjacent to each other, and a mobile subscriber can wirelessly access any mobile access communication network via the mobile terminal. The present invention relates to a mobile terminal call system configured to be able to communicate.

[0002]

2. Description of the Related Art Conventionally, a plurality of mobile access communication networks exist in a service area, and even if a subscriber registered in a certain mobile access communication network moves into the area of another mobile access communication network, the service is provided. There is provided a mobile communication system capable of receiving the mobile communication system.
No. 40).

In this mobile communication system, a visitor location register for storing roaming subscriber data from another communication network is provided in a mobile access communication network, and when roaming occurs, a mobile access register corresponding to the subscriber data of the subscriber is provided. This is temporarily transferred to a visitor location register of a communication network, and a service on the communication network can be received by using the subscriber data of the register.

This conventional mobile communication system is very excellent when a plurality of mobile access communication networks exist in the service area.

[0005]

However, in the above-mentioned conventional mobile communication system, when a mobile access communication network is adjacent to a subscriber and a call is made in an area where roaming may occur. Was unsuitable for

That is, when a mobile subscriber calls a mobile subscriber in an area where roaming may occur, the first mobile access communication network that transmitted the mobile subscriber's paging signal and the mobile subscriber are called. If the second mobile access communication network receiving the call response signal from
In this mobile access communication network, an invalid call response signal is generated and discarded. The reason why such a phenomenon occurs is that the mobile terminal of the mobile subscriber searches for the highest quality wireless channel and transmits a paging response signal on the wireless channel.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mobile terminal paging system in which a mobile subscriber in an area where a roaming process is likely to occur has an improved incoming call completion rate.

[0008]

In order to achieve the above object, a mobile terminal paging system according to the first aspect of the present invention comprises: (a) determining whether a mobile terminal in a first service area can access or not; A first mobile access communication network for managing a connection, transmitting a paging signal including identification information for identifying the mobile access communication network, and exchanging information with another mobile access communication network in response to the received paging response signal; , (B) Second
A mobile terminal located in the service area of the mobile terminal, determines whether access is possible, manages call connection, transmits a paging signal including identification information for identifying a mobile access communication network, and performs other mobile access according to the received paging response signal. A second mobile access communication network for exchanging information with the communication network, (c) a control line for exchanging at least subscriber signals between the two mobile access communication networks, and (d) a registered service area. And a mobile terminal that receives the call signal and transmits the identification information included in the call signal in the call response signal.

Therefore, according to the first aspect of the present invention, the mobile access communication network which has received the paging response signal from the mobile subscriber refers to the identification information in the paging response signal to determine from which mobile access communication network. Since it is possible to know whether or not the call has been made, it is possible to transmit and receive control information to and from the mobile access communication network indicated by the identification information to make a call connection.

According to the second aspect of the present invention, (A) the first mobile access communication network comprises (A-1) a plurality of first radio stations for realizing a first service area, and (A-2) A first radio station control device for controlling these first radio stations;
3) Judge whether the mobile terminal can access, manage the call connection,
A call signal including identification information for identifying a mobile access communication network is transmitted from the first radio station via the first radio station controller, and a call response signal received by the first radio station is transmitted to the first radio station. And outputting the paging response signal to the control line when the identification signal in the paging response signal is the identification signal of another mobile access communication network.
(B) The second mobile access communication network comprises: (b-1) a plurality of second wireless stations realizing a second service area; and (b-2) A second radio station controller that controls the second radio station, and (b-3) a call that includes identification information for identifying whether the mobile terminal can access, managing the call connection, and identifying the mobile access communication network. A signal is transmitted from the second radio station via the second radio station controller, and a call response signal received by the second radio station is fetched via the second radio station controller. And a second mobile line management device for outputting a paging response signal to the control line when the identification signal in the above is an identification signal of another mobile access communication network.

According to the third aspect of the present invention, the mobility management device includes: (a) means for determining whether or not the mobile terminal can access and managing the call connection; and (b) identification information for identifying each mobile access communication network. Means for transmitting a call signal including the call signal;
Means for outputting a paging response signal to another mobility management device via a control line when the identification signal of the mobile access communication network is not received from the received paging response signal; Means for receiving a call response confirmation and subscriber information of the mobile terminal from the management device, and allocating a radio call number for connection with the mobile terminal based on the information.

According to a fourth aspect of the present invention, the radio station control device and the mobility management device are connected to a wired network.

According to the fifth aspect of the present invention, the (a) paging signal includes (a1) paging identification information for identifying a mobile terminal, and (a-2) a carrier for identifying a mobile access communication network. The (b) paging response signal is composed of (b-1) paging response information indicating a paging response from the mobile terminal, and (b-2) a mobile access communication network. And a carrier signal.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to embodiments of the present invention. FIG. 1 is a configuration diagram showing a mobile terminal paging system according to an embodiment of the present invention.

In FIG. 1, a first service area 10 of a first operator A and a second service area 30 of a second operator B are installed adjacent to each other. It is assumed that there is an area 40 that partially overlaps the area 30.

The mobile terminal call system determines whether or not the mobile terminal in the first service area 10 can access the mobile terminal.
A first connection for managing a call connection, transmitting a paging signal including identification information for identifying a mobile access communication network, and exchanging information with another mobile access communication network according to the received paging response signal.
Mobile access network 11 and second service area 3
0, a call signal containing identification information for identifying a mobile access communication network and managing call connection, and transmitting a call signal including the identification information for identifying the mobile access communication network. A second mobile access communication network 31 for exchanging information with a control line 50 for exchanging at least subscriber signals between the two mobile access communication networks 10 and 30;
A mobile terminal 70 for receiving a call signal from a registered service area, transmitting the identification information in the call signal again included in the call response signal.

A mobile terminal (hereinafter, S) used by a mobile subscriber
U (called Subscriber Unit) 70 is capable of wireless communication with both mobile access communication networks. It is also assumed that there is an area 40 where the service areas 10 and 30 overlap as in the present embodiment, and the SU 70 is registered in the service area 10 of the first operator A.

The first mobile access communication network 11 is an SU7
A radio station (hereinafter, referred to as “RP (Radio Port)”) 12 that is a radio base station / radio port that performs radio control with 0;
The RP 12 is connected to the wired network 90 and the SU 70
A radio station controller (hereinafter referred to as "RPCU (Radio)" which is a radio base station controller / radio port controller for making a call connection between the telephone and the fixed telephone 91 or between the SU 70 and another SU 70.
Port Controller Unit) 13) and a mobility management device 14 that manages a call connection such as whether or not the mobile subscriber can access the SU 70 system.

The second mobile access communication network 31 is an SU7
A radio station (hereinafter referred to as “RP (Radio Port)”) 32 which is a radio base station / radio port for performing radio control with 0;
The RP 32 is connected to the wired network 90 and the SU 70
A radio station controller (hereinafter referred to as "RPCU (Radio)" which is a radio base station controller / radio port controller for making a call connection between the telephone and the fixed telephone 91 or between the SU 70 and another SU 70.
Port controller unit) ”33) and a mobility management device 34 that manages call connections such as whether or not a mobile subscriber can access the system of the SU 70.

The mobility management devices 14 and 34 are connected to the control line 5
0 for transmitting and receiving control signals necessary for mobility management control or call connection. Mobility management device 14,
34, a call signal including identification information for identifying whether or not the mobile terminal can access, managing the call connection, and identifying the mobile access communication network via the RPCUs 13 and 33;
In addition to transmitting the call response signal from the RPs 13 and 32, the call response signal received by the RPs 13 and 32 is taken in through the RPCUs 13 and 33. It is configured to output to the control line 50.

The wired network 90 includes a common channel signaling network including a location register, and calls from the fixed terminal 91 to the SU 70 of the mobile subscriber are routed to a specific mobile access communication network.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIG. 1, FIG. 2, and FIG. FIG. 2 is an explanatory diagram of a calling signal and a response signal. FIG. 2A is an explanatory diagram of a configuration of a call signal. FIG. 2 (b)
FIG. 4 is an explanatory diagram of a configuration of a call response signal. A call signal 800 shown in FIG. 2A includes call identification information (call signal) 802 for specifying a predetermined SU 70 and business operator identification information 801 for identifying a mobile access communication network.
Sent from RPs 12 and 32. The call response signal 810 shown in FIG. 2B is composed of call response information (call response signal) 812 indicating that the SU is a predetermined SU 70, and business operator identification information 811 for identifying a mobile access communication network. It is transmitted from the SU 70. FIG. 3 is an operation sequence diagram of the above-mentioned mobile terminal paging system.

First, when a call signal 100 is received from the fixed telephone 91 to the SU 70 via the wired network 90,
A call request signal 101 is transmitted to the mobility management apparatus 14 from the common line signal line network inside the network.

Upon receiving the call request signal 101, the mobility management device 14 sends a call request signal 102 to the RPCU 13. Then, the RPCU 13 controls the RPs 12, 12,... From the RPs 12, 12,... To the provider identification information (here, the provider code 801 indicating the provider A, FIG.
A call signal 103 (reference numeral 800) including call identification information 802 for specifying the SU 70 is broadcast simultaneously on a wireless channel, and a call (page) is made to the SU 70 in the service area.

Upon detecting a call addressed to itself from the call identification information 802 (see FIG. 2A) of the call signal 103 (reference numeral 800), the SU 7 searches for the radio channel of the highest quality and calls the call signal 103 (reference numeral 800). ) Built-in carrier code (herein, it shows the carrier A) 801 is taken out and added to the carrier identification information 811 in the call response information 812 indicating that it is the call response from the SU 70. It is transmitted as a signal 104 (reference numeral 810).

In this case, the first call of the operator A who made the call is
The mobile access communication network 11 of
Response signal 104 to mobile access communication network 31
Has been returned.

This is a situation in which an incoming call is generated before the roaming process is started while the mobile subscriber is moving from the RP 12 closest to the SU 70 to the RP 32 closest to the SU 70.

The paging response signal 104 is received by the nearest RP 32 of the SU 70, and is reported from the RPUC 33 to the mobility management device 34 as a paging response signal 105.

The mobility management device 34 receives the call response signal 10
Since the carrier identification code 811 added to the call response information 812 in 5 is a carrier code indicating another carrier A, the call response signal 106 is transmitted to the mobility management device 14 via the control line 50. I do.

The mobility management device 3 transmits the call response signal 1
06 (call response information 812 in) is a valid mobile / S
Check if it is a call response signal from U70,
When it is recognized that the response is from the control line 70, the control line 5
Then, the information 107 that combines the call response confirmation signal and the subscriber information of the SU 70 is transmitted to the mobility management device 34 via “0”.

Further, for a common signal network of the wired network 90,
RPCU 33 that is the call request response signal and the call transfer destination
Is transmitted with the information instructing.

The subsequent operation is performed as if the SU 70 were in the second state.
The terminating sequence moves as if the location was registered in the second mobile access communication network 31 of the operator B, and the call connection is completed.

After the mobile subscriber has continued to move and has completely moved to the service area 30 of the second mobile access communication network 31 of the operator B, if the call is disconnected, when the mobile station transitions to the standby state, a new business is performed. Area 3 of person B
It detects that it has moved to 0, performs position registration, and performs roaming processing.

Therefore, thereafter, the call request for the SU 70 is made directly from the wired network 90 to the mobility management device 34.

As described above, according to the above-described embodiment, it is possible to improve the completion rate of the incoming call to the mobile subscriber located in the boundary area 40 of the plurality of mobile access communication networks 10 and 30. Therefore, by changing the program for activating the roaming process of the mobile subscriber, the mobile subscriber moving around the boundary area can reduce the roaming processing amount and suppress the power consumption. This is because the completion rate of the incoming call to the mobile subscriber located in the boundary area 40 is improved, so that the roaming process can be performed at a point sufficiently distant from the boundary area.

[0036]

As described above, according to the first aspect of the present invention, the mobile access communication network, which has received the call response from the mobile subscriber, refers to the identification information in the signal to determine which mobile access communication. It is possible to determine whether or not a call has been made from the network, and to transmit and receive control information to and from the mobile access communication network indicated by the identification information to make a call connection. The completion rate of the incoming call to the person can be improved.

According to the second aspect of the present invention, the mobile access communication network comprises a radio station, a radio station controller for controlling the radio station, and a mobility management device. Since a call response signal can be exchanged between control terminals via a control line, even mobile terminals of other mobile access communication networks can be connected.

According to the third aspect of the present invention, the mobility management apparatus can add identification information for identifying each mobile access communication network to the paging signal and transmit the paging signal. Therefore, the call connection can be performed by transmitting and receiving the control information to and from another mobility management device when the identification signal is not the above, so that the call connection can be reliably performed.

According to the fourth aspect of the present invention, since the radio station controller and the mobility management device are connected to a wired network, a call can be made from a fixed telephone.

According to the fifth aspect of the present invention, the paging signal comprises the mobile access communication network identification information and the paging identification information, and the paging response signal comprises the mobile access communication network identification signal and the paging response information. Also, at the time of calling and answering, the identification information of the mobile access communication network is transmitted and received, and the connection of the mobile terminal can be performed smoothly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a mobile terminal paging system according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a call signal and a call response signal used in the embodiment.

FIG. 3 is a sequence diagram for explaining the operation of the embodiment.

[Explanation of symbols]

 Reference Signs List 10 first service area 11 first mobile access communication network 12, 32 RP (radio station) 13, 33 RPCU (radio station controller) 14, 34 mobility management device 30 second service area 31 second movement Access communication network 40 Boundary area 50 Control circuit 70 SU (mobile terminal) 90 Wired network 91 Fixed terminal

Claims (5)

[Claims] 1. A call response signal that receives and transmits a call signal including identification information for determining whether or not a mobile terminal in the first service area can access, managing call connection, and identifying a mobile access communication network. A mobile access communication network for exchanging information with other mobile access communication networks according to the above, and management of call connection and judgment of access permission of mobile terminals in the second service area, and identification of the mobile access communication networks. And a second mobile access communication network for exchanging information with another mobile access communication network according to the received call response signal, and at least between both mobile access communication networks. A control line for exchanging subscriber signals and a move for receiving a call signal from a registered service area, and transmitting the identification information in the call signal by including it again in the call response signal. A mobile terminal calling system, comprising: a terminal; 2. A first mobile access communication network, comprising: a plurality of first radio stations for realizing a first service area; a first radio station control device for controlling the first radio stations; The first radio station transmits a call signal including identification information for identifying whether the terminal can be accessed, managing the call connection, and identifying the mobile access communication network via the first radio station controller, and A paging response signal received by one radio station is fetched via a first radio station controller, and the paging response signal is controlled when an identification signal in the paging response signal is an identification signal of another mobile access communication network. A first mobile line management device for outputting to a line, a second mobile access communication network, a plurality of second wireless stations for realizing a second service area, and control of these second wireless stations A second radio station controller that performs The second radio station transmits a paging signal including identification information for managing access connection determination, call connection, and identifying the mobile access communication network from the second radio station via the second radio station control device. The paging response signal received by the radio station is fetched through the second radio station controller, and when the identification signal in the paging response signal is the identification signal of another mobile access communication network, the paging response signal is transmitted to the control line. 2. The mobile terminal calling system according to claim 1, further comprising a second mobile line management device for outputting. 3. The mobile management device includes means for determining whether or not the mobile terminal can access and managing the call connection; means for transmitting a call signal including identification information for identifying each mobile access communication network; Means for outputting a call response signal to another mobility management device via a control line when the identification signal is not a mobile access communication network addressed to itself from the call response signal, and a call response from another mobility management device via the control line 3. The mobile terminal calling system according to claim 2, further comprising means for receiving confirmation and subscriber information of the mobile terminal, and allocating a radio call number for connection with the mobile terminal based on the information. . 4. The mobile terminal calling system according to claim 2, wherein the radio station controller and the mobile line management device are connected to a wired network. 5. The paging signal comprises paging identification information for identifying a mobile terminal and carrier identification information for identifying a mobile access communication network, and the paging response signal comprises:
4. The mobile terminal calling system according to claim 1, 2 or 3, comprising call response information indicating a call response from a mobile terminal and a carrier signal for identifying a mobile access communication network. .