JPH1070755A - Announcing method for mobile communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To presume the position of a mobile station by announcing area information based on the final position registration information of the mobile station to a caller by a communication control network in the case that a call termination scheduled mobile station is in a communication impossible state. SOLUTION: The call termination schedule mobile station 24 transmits position registration request signals 11 through a base station 23 and the communication control network 22 registers the position and returns registration reception signals 12. Thereafter, the mobile station 24 is power-disconnected or moved to the outside of the communication zone of the base station 23. In the state, when the caller 21 calls the telephone number 14 of the mobile station 24, the control network 22 simultaneously originates calling signals 15 from the base station 23 and the base station of the closer area based on the stored final position registration information. No response is present since the mobile station 24 is already power-disconnected or moved to the outside of the communication zone. At the time of judging that communication can not be established, the control network 22 announces information 16 for which the place on a map of the base station 23 which finally receives position registration and the reception time are voice-synthesized to the caller 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system such as a portable telephone and a PHS.

[0002]

2. Description of the Related Art In a conventional radio communication, when a mobile station to receive a call is not in a communicable zone, a radio communication control network follows a predetermined procedure. (B) Record the caller's message and play it back when requested. (C) Select and perform an operation such as transfer to another predetermined terminal. These choices can be predetermined by the user, but changing the settings often requires a lot of time.

[0003]

[Problems to be Solved by the Invention] Conventional (A) and (B)
Each of the measures (C) has the following problems.

(A) A caller cannot obtain any information on a mobile station which is destined to receive a call. The only option is to guess when the terminating mobile station will be unavailable. If you can't guess, you have no choice but to stay in touch. (B) Recording and playing back the message of the caller is considered to be a very convenient method, but since it imposes a heavy load on the wireless communication control network, it is often difficult to realize it. Development period and capital investment are required.

[0005] (C) Extra capital investment is required since another (terminal capable of receiving) terminal must be set in advance (another terminal is required). In addition, there is a danger that the information will be transferred to another terminal while the mobile station that is to receive the call is not known, and an urgent business will be missed.

[0006]

According to the present invention, there is provided a method for announcing a wireless communication system, comprising: a control network; and a plurality of base stations connected to the control network.
A position registration request is received from a mobile station that is to receive a call, and when a caller requests a call to the mobile station from a control network, a wireless call is performed from the base station that last received the position registration for the mobile station. In the mobile communication system, the control network includes an announcement unit for outputting the area information of each base station or the base station itself as the area information of the local station, and the control network is located at a position from the mobile station scheduled to receive the call. A procedure for receiving a registration request, and when the control network requests a call to the mobile station from the caller to the control network, the control network causes the base station, which last received location registration, to make a wireless call to the mobile station from the base station. And when the control means or the base station making the radio call cannot establish a radio connection with the calling mobile station, Consisting of the procedure to announce the area information to the caller.

[0007]

FIG. 1 is a diagram showing an embodiment of the present invention. For example, a case where a scheduled incoming mobile station 24 moves out of a communicable area or a case where the scheduled incoming mobile station 24 is turned off. FIG. 7 is a sequence diagram illustrating the operation of the wireless communication control network 22 (connected to the center station) when the scheduled incoming mobile station 24 is in a state where communication is not possible, as in FIG.

[0008] When the mobile station 24 scheduled to arrive moves into an area where a plurality of base stations can be wirelessly connected to the base station 23, the location registration request signal 1 is sent to the control network 22 through the base station 23.
Send 1 In the center station connected to the control network 22, the reception time and the base station 23
And the group identification information for collectively identifying the base stations in the area close to the base station 23 are stored as the position registration information, and the position registration acceptance signal 12 is returned to the mobile station 24 through the base station 23.

Thereafter, the mobile station 24 is powered off or moves out of the service area of the base station 23 (13), but no new location registration request signal is sent to the control network 22.

[0010] In this state, when the caller 21 transmits the telephone number 14 of the mobile station 24, the center station through the control network 22 transmits the base station 23 based on the stored last location registration information.
From the base station 23 or simultaneously from a plurality of base stations including base stations in the vicinity of the base station 23.
Is turned off or has moved out of the service area, so there is no response and no call can be established. Mobile station 2 at the center station
When it is determined that a call cannot be established because there is no response from the base station 4, the stored map database is searched from the stored last location registration information, and the location of the base station 23 that was received last is determined by the voice synthesizer in the area. The voice synthesis is performed on the information 16 and the stored reception time of the position registration request signal 11 is voice synthesized. The voice-synthesized area information 16 is announced to the caller 21 through the control network 22 together with the reception time.

[0011]

According to the present invention, it is possible to provide a user with a convenient service with far less resources than services such as voice recording currently in practical use.

By knowing when and where the target mobile station last registered the location, the user can effectively select a process such as "contact at a later date, contact after a few minutes, or record message".

[0013] In a system such as a PHS using a plurality of control stations (base stations) having a narrow talk zone by itself,
By sending a message such as "Registration was performed 15 minutes ago at C-chome in town B of city A." it can.

[Brief description of the drawings]

FIG. 1 is a sequence diagram showing a procedure according to an embodiment of the present invention.

[Explanation of symbols]

 11: Location registration request signal 12: Location registration reception signal 16: Area information 21: Caller (telephone terminal) 22: Control network (telephone line including center station) 23: Base station 24: Incoming mobile station (mobile phone terminal) )

Claims (1)

[Claims] The system comprises a control network and a plurality of base stations connected to the control network, receives a location registration request from a mobile station scheduled to receive a call, and sends a call request from the caller to the control network to the mobile station. In a mobile communication system in which the mobile station performs a radio call from the base station that last accepted location registration for the mobile station, the control network may transmit area information of each base station or the area of the base station may be the base station. An announcement means for outputting information by voice, a procedure in which the control network accepts a location registration request from a mobile station to be called, and a request from the originator to the control network for a call to the mobile station from the originator. The procedure for causing the mobile station to make a wireless call from the base station that has accepted the location registration last for the mobile station, and the procedure for making a call while the control network or the base station performing the wireless call is calling. Announcement method for a mobile communication system, characterized in that comprising a procedure for announcing area information of the base station to the caller by the announcement unit when the wireless connection can not be established with.