JPH09187078A - Mobile communication system in common use for pager and terminal equipment for the system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a micro-cell mobile communication system (PHS) to make communication with a terminal equipment moving at a high speed on an automobile or the like and allow both the micro-cell mobile communication system (PHS) and a macro-cell (portable telephone system) communication system to make communication with a terminal equipment when it is in a radio wave shield area or its terminal equipment power supply is interrupted. SOLUTION: An incoming call is given to a mobile communication terminal equipment and as required a message for a caller number is informed thereto by using a paging system for the possessor of the mobile communication terminal equipment so as to allow the communication with the possessor of the mobile communication terminal equipment even when the possessor of the mobile communication terminal equipment takes action like movement to a strong electric field strength area such as deceleration/stop of an automobile, at the outside of a radio wave, residence at a window side or at exit or entrance or power supply application. When the communication is disable, the possessor of the mobile communication terminal equipment calls back by observing a caller number in the received message. Furthermore, in the case of the micro-cell mobile communication system (PHS), a pseudo-macro-cell system using plural adjacent cells as one group is introduced to attain communication during high speed moving state.

Description

Detailed Description of the Invention

[0001]

[Industrial field of use] The industrial field of use is mobile communication systems, especially because mobile communication terminals are in the area where downlink radio waves are blocked, the power is off, and they are moving at high speed. Involved in a system that enables connection / calling when an incoming call cannot be connected.

[0002]

2. Description of the Related Art In a mobile communication system such as a PHS, a cell is 100 m long in order to receive the uplink radio wave with a low uplink transmission power of 10 mW due to the necessity of downsizing the terminal and to improve the frequency reuse efficiency. The microcell is as small as ˜300 m, and one radio base station is provided in each cell and connected to a wired switching network. Frequency is 1.9GH
High as z.

In mobile communication systems such as mobile phones and car phones, the uplink transmission power of a terminal is about 0.6 to 1.0 W, the cell is a macro cell of 1 to 3 km, and the frequency is 800 M to.
1.5 GHz is used. Neither use the paging system together.

[0004]

In the PHS microcell system, an incoming call cannot be connected to a terminal which is moving at a high speed, and a telephone call or data communication cannot be performed. In addition, in both the micro cell system and the macro cell system, an incoming call cannot be connected when the terminal is in a downlink radio wave shielded area (in the shadow of a building, inside a building, or underground) or when the power is off. The present invention proposes a method for enabling these incoming call connections and calls.

[0005]

[Means for Solving the Problems] By combining / combining a paging system with a mobile communication system, the paging system having good wide-area propagation characteristics is used to notify the terminal holder of an incoming call or give a notice of the incoming call. If a person is moving at high speed, the speed will slow down or stop, and the radio wave shielding area (building shadow,
When in a building or underground, it moves to a strong electric field area (outside the shadow, at the window, at the entrance), and when the power is turned off, it is turned on to enable connection, communication and communication. In addition, the microcell system enables the communication while moving at high speed by introducing the pseudo macrocell.

[0006] Claim 1 is a general concept of paging combined use, claim 2 is a specific method (FIG. 1) of utilizing a paging system when an incoming call connection fails, and claim 3 is for saving time. Incoming call connection procedure 2 and incoming call notification 7 by paging system (caller number message 8 if necessary)
This is a method (FIG. 2) in which and are performed almost simultaneously. Claim 4 is a method of receiving the incoming call notification by the paging system, predicting the time T1 required for the action 9 for the terminal holder to eliminate the connection obstruction factor, and waiting (5) to enter the reconnection procedure 6 (Fig. If the connection fails again because the exclusion is not completed in 1), T
Reconnection procedure 6 after waiting for time 12 of 2 (including T2 = 0)
Or the procedure from the incoming call notification 7 by the paging system is repeated n times to ensure the connection.

According to a fifth aspect of the present invention, the number of the calling side is placed on the message display of the pager (8) so that the call can be returned even when the connection is finally made (FIGS. 1 and 2). . The station on the mobile communication system side can terminate the connection procedure after repeating the connection procedure n times after the arrival notification, or immediately (N =
0) You can also cancel. There is an inconvenience that the terminal owner has to return the call in addition to eliminating the connection obstruction factor. Claim 6 is to increase the practicality of the present invention by specializing and downsizing a pager and a compound / combined terminal for paging and mobile communication.

According to a seventh aspect of the present invention, in the micro cell (PHS) mobile communication system, when an incoming call is received, the PHS terminal holder is notified by the incoming call notification from the paging system. By notifying the station of "moving at high speed" (by communication etc.),
And / or by automatically determining whether the terminal is moving at high speed without using the paging system (due to a failure in the connection procedure or due to Doppler shift of the radio frequency), and when making a call. , The PHS terminal holder notifies the station of "starting high-speed movement", or by notifying the station of "high-speed movement" by uplink bidirectional paging communication while moving, and / or without using the paging system The station recognizes the high speed mobile terminal by automatically (as described above) that the station side is moving the terminal at high speed. .

For this high-speed mobile terminal, the station side creates a pseudo macrocell by setting the microcell where the terminal is located and a group of neighboring microcells as one group, and dynamically replaces the constituent microcells as it moves, or Form a next pseudo macro cell, or form a static and static pseudo macro cell arrangement set in which a group of a plurality of micro cells that are adjacent to each other in advance are used as pseudo macro cells, and hand-operate between pseudo macro cells as they move. The procedure for moving the terminal between the microcells in the group is handled by treating the terminal as if the terminal virtually exists even in a microcell in which the terminal does not exist in the group. It simplifies and shortens the time required for handover between microcells to enable communication during high-speed movement.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In a cell phone of a macro cell, since the cell size is medium, the residence time in the same cell is sufficient for cell switching (handover) even during high-speed movement, so that communication is possible. However, in the micro cell system such as PHS, the residence time during passing through the cell during high-speed movement is not long enough for the time (4 to 5 seconds) required for terminal location registration, connection and handover, and connection is not possible. Often. Also, both terminals cannot connect if the terminal is in the downlink radio wave shielded area or the power is off. In the PHS, it is possible to economically install a large number of low-power cell base stations even in a building or underground, and in some cases it is more advantageous than the macro cell system.

There is no problem with Paija's shadow, but in the building
Although it cannot be said that the signal can be sufficiently received underground, the frequency used is 280 MHz (in the future, 50 to 100 MH will be used in FM use).
z), PHS (1.9 GHz), mobile phone (800M-
Since it is lower than 1.5 GHz, the transmission power and diffraction power are strong and reachability is excellent. Further, since the coverage area of one cell station is wide (super macro cell) and the connection / communication time is unidirectional, the signal can be sent to the pager terminal moving at high speed.

Therefore, by using the paging system in combination with the PHS or the mobile phone and notifying or notifying the owner of the communication terminal of the incoming call with the PHS or the mobile phone by the paging system, the owner can move at high speed. Communication is possible by eliminating connection obstruction factors such as deceleration / stop, moving to a strong electric field area (outside the shadow, at the window, entrance) in the radio wave shielded area, and turning it on when the terminal power is off. can do.

The operation of introducing a pseudo macro cell in the micro cell system (PHS) will be described. When the station side recognizes the presence of a terminal that starts high-speed movement or a terminal that is moving at high speed (hereinafter, both are collectively referred to as a high-speed terminal), the microcell in which the terminal exists is notified by the terminal or incomplete. However, since it can be known by exchanging with the terminal, a pseudo macro cell is formed with the same cell including the neighboring cells as the center. As for the size of the pseudo macro cell, a radius of 2 to 3 micro cells is sufficient. The constituent microcells may be sequentially replaced dynamically as the terminal moves, or the next pseudo macrocell may be formed stepwise.

Alternatively, irrespective of the specific terminal, a static set in which pseudo macro cells, which are a group of a plurality of micro cells that are in contact with each other, are fixedly arranged over a wide area in advance, is formed, and the macro cell system is used when moving. Handover between pseudo macro cells may be performed in the same manner as in.

Pseudo-macrocellization is to treat a microcell in which the terminal does not exist as if the terminal exists virtually, and frequency, time slot, synchronization, notification information, and concealment. The station side prepares for each virtual cell the key code, position, function request, authentication, etc. for the virtual terminal. It is also possible to notify the terminal side of the information peculiar to each of the microcells. In this way, when moving between the microcells in the group, the hand-over procedure between the terminal and the station can be greatly simplified, most of the processing can be performed on the terminal side, and the required time can be greatly shortened. You can continue the call during the call. For further movement, pseudo macro cells are dynamically formed sequentially, the next pseudo macro cell is formed stepwise, or handover between pseudo macro cells that are statically arranged in advance is performed.
Should be done.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, connection of a called terminal in a conventional mobile communication system will be described. Micro cell type PHS
In (Personal Handyphone System), when the terminal is moving at high speed or in the downlink radio wave shielded area, and when the terminal power is off, incoming call connection is disabled. Further, in the case of a macro cell type mobile phone or mobile phone, an incoming call cannot be connected when the terminal is in the downlink radio wave shielded area and the terminal power is off.

This conventional sequence is shown in FIG. In this case, when the connection cannot be established (NO in 3), the service station normally connects to the caller because the calling party (the called party) is in a place where radio waves do not reach or the power is turned off. can not"
And announces 13 to end the sequence.
When the called party has made an answering machine contract in advance, the calling party can leave a message at the station.

The present invention is an important / emergency call (or data communication, hereinafter generally referred to as a call) due to the conventional non-connection.
To prevent the loss of.

Since the PHS has more factors of disconnection, the embodiment will be described below with the PHS as the main component. First, PHS subscribers make a contract with PHS Service Co., Ltd., including the above-mentioned paging service combination, if desired. When PHS Service Co., Ltd. also works as a paging service, both can be easily linked, but when they are separate management bodies, they cooperate to build a complex system that links both.

PHS Services Co., Ltd.
Hand it over to the subscriber along with the S terminal (rental, sold out, etc.). The correspondence between PHS numbers and pager numbers is registered in the database of the station.

FIG. 1 shows the connection sequence of the PHS service for an example combining claims 2 and 4. After confirming the number of the called party requested by the calling party, the PHS service station takes out the data indicating whether the called party is a paging combination subscriber or not from the pre-registered database. , Execute the connection sequence 2 to the called party. If the connection is made without any problem (YES in 3), the process moves to the next sequence, but if the connection fails (NO in 3), if the called party is a paging combination contractor, the pager number is given to Paging Services. Notify the calling number and request paging. The paging service company paging the terminal of the pager number and notifying the incoming call of PHS (7). If necessary, the PHS calling party number 8 is sent to the terminal as a message (Claim 5). Paging terminal provides PHS to the owner with ringing tone, vibration, voice announcement, light, display, etc.
Notify that the terminal has been called. Caller ID message
Display when accompanied by

The owner of the terminal knows that the PHS terminal has been called by the notification, or that the PHS terminal has been called but has not been connected. When you are in, take action 9 such as quickly moving to the outside of the shadow, near the window, near the doorway, or turning it on when the power is off.

After requesting the paging service station, the PHS station starts the reconnection sequence 6 after the elapse time 5 of the predetermined T1 (claim 4). If the owner takes an appropriate action within the time T1, the reconnection succeeds. If the owner is late in responding, does not respond, or does not notice the paging notification, reconnection 6 fails (N of 10
O) At this time, further, after T2 (including T2 = 0) time, the reconnection may be repeated at (12), or the sequence including the paging notification from the point A in the figure may be repeated. The number of repetitions n can be set in advance,

Of course, as shown in FIG. 2, an incoming call notification 7 is made by paging.
If the caller's number 8 message is sent together with the caller (Claim 5), at the first or subsequent n unconnectable times, the calling party is announced 13 that the connection is not possible, and the processing is terminated. It is also possible to do 14. This is because if the caller number (8) is left as a message in the pager when the call is terminated, the owner can call back the number when he / she notices it (claim 5).

The embodiment of FIG. 2 is an example in which claims 3 and 5 are combined, and the PHS service station starts the connection procedure 2 by calling 1 of the caller, almost at the same time or slightly before. , The pager number and the PHS caller number (message) are sent to the paging service station to request paging (7, 8). This is the method of claim 3. In this case, at the terminal holder side, the pager notifies the incoming call, and the PHS terminal also notifies the incoming call by the ringer when the connection is successful. If the PHS terminal fails to connect, only the incoming call notification 7 of the pager is issued. In this case, the terminal holder carries out the same action 9 as in the case of FIG.
The station may take the sequence of A or lower in FIG. 1 or announce the connection failure to the calling party as shown in B or lower of FIG. 2 and immediately terminate (n = 0) without waiting for time TI. May be. In the latter case, it is desirable that the caller number 8 of the pager's message can be returned as described above (claim 5).

In the case of n = 0 which terminates immediately, PH
The S service station has an advantage that the use efficiency of the line is improved by eliminating the unnecessary waiting time T1 and the like, but the user has the trouble of having to return the call.

Since the seventh aspect has already been described in detail in the paragraph of the action, the embodiment will be omitted. However, the introduction of the pseudo macro cell has a problem that the traffic of the micro cell is increased and the number of accommodated subscribers is decreased. However, the ratio of the number of terminals moving at high speed to the whole is low, and the problem can be solved by increasing the charge for high-speed moving calls.

When making a call from a mobile terminal, as a matter of course, since the call can be made after eliminating the connection obstruction factor, there is no problem and a description thereof will be omitted. Also, calling and talking on the move in the micro cell system can be realized by introducing the pseudo micro cell as described in the section of the operation.

All of the above sequences can be operated unattended by a computer or voice generator with full automation.

The paging terminal may be a standard general-purpose item, or may be specialized for this purpose. A number-only terminal is sufficient for the message. Most of Paijer's general-purpose functions are simple communication and call functions.
For this purpose, PHS is superior and has dual functions. Therefore, it is desirable to provide a small-sized and inexpensive dedicated payer in which the functions other than the object of the present invention are removed as much as possible, and the sum of the price of the PHS and the dedicated payer is sufficiently lower than that of the macrocell mobile phone. Is desirable.

Of course, the paging terminal and the PHS terminal may be integrated, and the size and weight are small and easy to handle. In addition, PHS is performed after receiving a call by the paging method by electrically connecting the mutual parts.
It is possible to adopt a fusion method that enters into the connection call procedure. The display LCD can also be used. It is also possible to call back with one touch using the calling number of the message in the paging system. Since it is not difficult for the owner to return the call, the line utilization efficiency on the station side can be improved by using the method shown in FIG. When the paging is bi-directional, it is possible to make a pseudo macrocell request with one touch while moving at high speed.

The PHS terminal number and the paging terminal number may be the same number. When the paging terminal is dedicated, the database that registers the correspondence between both numbers becomes unnecessary.

Although the database in which the correspondence between the PHS terminal number and the paging terminal number is registered is provided on the PHS station side, it goes without saying that it may be on the paging station side.

The above paging system uses FM, DA
It goes without saying that multiple broadcasts such as (Digital Audio), TV, etc. may be used. From the viewpoint of diffraction reachability, it is desirable that the frequency used be as low as possible.

The above-mentioned mobile communication system and paging system are currently composed of terrestrial waves and wired telephone systems, but they are space communication systems, space communication systems are combined, and paging is bidirectional. The present invention is also applied to cases such as dripping.

[0036]

EFFECTS OF THE INVENTION It is possible to make a call impossible while moving at high speed (automobile, motorbike, motor boat, etc.), which is a drawback of the cheap and simple micro cell (PHS).
A common defect of macrocells (mobile phones) is to remedy the inability to talk when the terminal is in the radio wave shielded area or when the power is turned off.
The low power consumption, low cost, and small size and lightness of the pager enhance the practicality of the present invention.

[Brief description of the drawings]

FIG. 1 is a diagram showing a connection sequence of an example in which claim 1 is implemented, and more specifically, claims 2 and 4 are combined.

FIG. 2 is a diagram showing a connection sequence of an example in which claim 1 is implemented, and more specifically, claims 3 and 5 are combined.

FIG. 3 is a diagram showing a connection sequence of a conventional mobile communication terminal.

Claims (7)

[Claims] 1. A microcell mobile communication system (P
HS) and macrocell mobile communication systems (cell phones,
In a mobile communication system such as a car phone, a mobile communication system that supports connection / calling of a mobile communication terminal by using a paging (one-way or two-way) system together, and a device and a terminal for the same. 2. The mobile communication system according to claim 1, wherein when the mobile communication system fails in the incoming call connection of the communication terminal, the paging system notifies the terminal holder of the incoming call, and the connection inhibiting factor is eliminated by the behavior of the owner. method. 3. The paging system according to claim 1, wherein the paging system parallelly notifies the terminal holder of the incoming call at approximately the same time as or before the start of the procedure for connecting the called terminal of the mobile communication system. This is a method that takes action to eliminate the connection obstruction factor as soon as possible. 4. The mobile communication system according to claim 2, when the mobile communication system fails to connect to the called terminal, the mobile communication system is required by the owner of the terminal to eliminate the connection obstruction factor by the notification of the paging system. A method of entering the reconnection procedure after waiting for the estimated time T1. When unsuccessful, a method of repeating a reconnection procedure or a procedure of waiting for time and reconnecting starting from an incoming call notification by paging is repeated a predetermined number of times n (including n = 0). 5. The terminal according to claim 2, 3, or 4, at the time of at least one of the first and repeated notifications by the paging system, simultaneously transmitting the calling party number as a message to the terminal holder, A method that allows the owner to call back to the calling party number at any time, especially when the mobile communication system eventually fails to connect to the called terminal. 6. In all of the above claims, the paging terminal (hereinafter also referred to as a pager) is a function specialized for simplifying functions other than those necessary for the above-mentioned connection support, or further integrated with a mobile communication terminal. A system and terminal characterized by being combined or combined with. 7. In a micro cell (PHS) mobile communication system, when an incoming call is received, the PHS terminal holder notifies the station that it is moving at high speed by an incoming call notification by a paging system, and / or a paging system is used together. By automatically determining that the terminal is moving at high speed without doing
In addition, at the time of calling, the PHS terminal holder notifies the station of the start of high-speed movement, or while moving, by notifying the station of high-speed movement by uplink communication such as bidirectional paging, and /
Alternatively, the station recognizes the high-speed mobile terminal by automatically determining that the terminal is moving at high speed without using a paging system. For this high-speed mobile terminal, the station side creates a pseudo macrocell by setting the location microcell and the neighboring microcell group of the terminal as one group, and dynamically replaces the constituent microcells sequentially as it moves, or next stepwise. Pseudo-macrocells are formed, or a set of fixed and static pseudo-macrocells is created by using a group of a plurality of microcells that are in contact with each other in advance as a pseudo-macrocell, and handover is performed between the pseudo-macrocells as they move. At the same time, by handling as if the terminal exists virtually even in a microcell in which the terminal does not exist in the group, the procedure of moving the terminal between cells in the group is simplified. Systems, devices and terminals that reduce the time required for moving procedures and enable calls during high-speed movement.