JPH0514265A - Mobile communication device - Google Patents

Abstract

PURPOSE:To smoothly perform the communication between different communicating areas by predicting the communicating area to invade next based on the history related to the movement of a mobile object. CONSTITUTION:In a storage part 7, the history related to the movement when a mobile object moves between communicating areas (zones) where the range is specified is stored. A CPU 1, based on the data to classify and prepare the history stored in the storage part 7, for example, the history of the movement of a past zone to plural patterns, performs the forecasting related to the zone to which the mobile object next invades. For example, the mobile object moves at a constant speed, and the switching time is obtained by extrapolation. Thus, the procedure necessary accompanying the zone switching can be started prior to the occurrence of the zone switching request. Then, even with the micro-cell system portable telephone set, the fast and high frequency zone switching can be responded to.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication device capable of smoothly performing communication between different communication areas.

[0002]

2. Description of the Related Art Conventionally, mobile communication is performed by a cellular system having a relatively large zone radius. However, since such a cellular system requires a large transmission output, a wireless unit and a battery having a large capacity are required. For this reason, the current situation is that the mobile phone is becoming more complicated and larger. In order to solve such problems,
Microcell communication with a small zone radius is about to be performed. By reducing the zone radius, the required transmission output can be reduced, and the mobile phone can be made compact and inexpensive.

In addition, in the mobile communication device, the radio wave transmitted from the radio communication base station cannot be received by the radio communication terminal side, or the radio wave emitted from the radio communication terminal cannot be received by the radio communication base station side, that is, for a call. There is an area outside the call zone of the base station (hereinafter, such an area is called a radio dead zone). When a wireless communication terminal exists in this radio dead zone, the user who called the wireless communication terminal with information that the called wireless communication terminal is outside the call zone on the base station side even if the wireless communication terminal receives a call However, no information can be provided to the called wireless communication terminal.

[0004]

However, a new problem has arisen by reducing the zone radius. That is, since the zone radius is set to be small, when this mobile phone is used in a moving body that moves at high speed, such as an automobile or a train, it will pass between the small zones S at high speed. , Zone switching will be very frequent. For example, if the zone radius is 200m and the moving body is 40km / h, the maximum length is 18
The need for zone switching occurs every second.

Such short-time and high-frequency zone switching complicates control in the control stations arranged centrally or in a distributed manner, which may cause problems in line control and call quality. In addition, the mobile phone is also required to have higher functionality, which leaves a problem in terms of downsizing and cost reduction of the mobile phone.

From the fact that it is considered that the demand for making a call while moving in a moving body moving at high speed will increase in the future, the above-mentioned problems must be solved immediately.

An object of the present invention is to solve the problems that occur when the microcell type mobile phone described in the prior art is used in a high speed moving body.

The present invention is to solve the problems of the prior art, and it is possible to provide information even when a call is received when the wireless communication terminal is outside the communication zone of the communication base station. To do.

[0009]

To achieve the above object, the first invention of the present application is based on a history of movement of a moving body when the moving body moves between communication areas whose range is specified. The gist of the present invention is to have a prediction regarding the communication area to be invaded next.

The second invention of the present application is based on a storage means for storing a history relating to the movement of a mobile body when moving between communication areas whose range is specified, and a history stored in the storage means. And a control means for performing a control corresponding to a communication area expected to enter next based on the prediction of the prediction means. Is the gist.

The third invention of the present application allows a radiotelephone system having a narrow range for a radiotelephone and a paging system having a wide range for paging to coexist in the same area, and information between these systems. When calling a wireless communication terminal having a transmission line and having a function related to the wireless telephone system and a function related to the paging system, when the wireless communication terminal is outside the range of the wireless telephone system, the wireless communication by the paging system is performed. The point is to call the terminal.

Further, a fourth invention of the present application is concerned with a radiotelephone system having a specific range for a radiotelephone, a radiocommunication terminal having a function relating to this radiotelephone system, and a radiocommunication terminal when the radiocommunication terminal is called. When it is confirmed that the wireless communication terminal is out of the specific range, a storage unit that stores the call, and a call related to the wireless communication terminal are stored in the storage unit, and the wireless communication terminal stores the call. When it is confirmed that the wireless communication terminal is within the range, a gist is to have a calling unit that calls the wireless communication terminal based on the storage.

[0013]

According to the first invention of the present application, when a mobile body moves between communication areas whose range is specified, the history of the movement of the mobile body, for example, the passing time of the previous zone, is used to determine the next zone and the corresponding zone. Predict when to enter.

In the second invention of the present application, a history relating to the movement of the moving body when moving between communication areas whose range is specified is stored in the storing means, and the history stored in the storing means, for example, Based on the data created by classifying the history of movements in the past zones into a plurality of patterns, a prediction relating to a communication area into which the vehicle invades next is performed. Furthermore, the control means is
Corresponding to the communication area expected to enter next based on the prediction of this prediction means, for example, classifying the passing time of the immediately preceding zone in zone switching and predicting the switching destination zone immediately after that which is derived by this Control.

A third invention of the present application is a region where a wireless telephone system having a narrow range for a wireless telephone and a paging system having a wide range for paging coexist.
When calling a wireless communication terminal having a function related to the wireless telephone system and a function related to the paging system and the wireless communication terminal is outside the range of the wireless telephone system, paging is performed via an information transmission path between the systems. The system is used to call the wireless communication terminal device.

According to a fourth aspect of the present invention, when a wireless communication terminal having a function related to a wireless telephone system having a specific range for a wireless telephone is called, the wireless communication terminal is outside the specific range. Is confirmed, the call is stored in the storage means. Further, when it is confirmed that the wireless communication terminal is within the specific range when the call relating to the wireless communication terminal is stored in the storage means, the calling means stores the call based on this storage. Call the wireless communication terminal.

When the zone is switched, the next zone switching time of the mobile unit and the next zone to be switched can be predicted in advance based on the past history, so that the procedure required for the zone switching can be started prior to the generation of the zone switching request. Therefore, even in the case of a micro cell type mobile phone, high speed and high frequency zone switching can be supported.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In this embodiment, the microcell type mobile communication will be explained by using a cordless telephone. FIG. 1 shows prediction of zone switching time. FIG. 2 shows a state in which microzones are arranged on a highway. Zone radius is 20
It is about 0m. The zones are made continuously from Z ₁ to Z ₇ . FIG. 3 is a diagram showing zones arranged continuously along the branch road. FIG. 4 is a block diagram showing a configuration of a mobile communication device that predicts a zone switching time. FIG. 5 is a flowchart on the terminal side for explaining the processing procedure of the zone switching time prediction operation. FIG. 6 is a flowchart on the base station side for explaining the processing procedure of the zone switching time prediction operation.

For convenience of explanation, it is assumed that the cordless telephone travels in the Z ₇ direction from the zone Z ₁ shown in FIG. The horizontal axis of FIG. 1 indicates the time measured by the clock unit 5. The vertical axis corresponds to the position on the highway R ₁ . FIG. 1 shows that the cordless telephone moved from zone Z ₁ to zone Z ₂ at time t ₁ in step S1. Similarly, time t
_{In time 2} , the time to move to zone Z ₄ is obtained from steps S3 to S11, and is predicted from the past history stored in storage unit 7 (step S17). FIG. 1 shows one such method. In this example, it is assumed that the cordless telephone moves at a constant speed, and the switching time t ₃ is obtained by extrapolation. In this way, when the zone is switched, it is possible to predict the next zone switching time of the mobile unit and the next switching destination zone based on the past history in advance. Therefore, the procedure required for zone switching can be started prior to the generation of the zone switching request. Therefore, even in the case of a microcell type mobile phone, high-speed and high-frequency zone switching can be supported.

FIG. 3 shows another embodiment of the present invention. FIG. 3 shows a branch road of a highway. Zone Z ₄ is the road R ₃ down the highway R ₂ . Now consider the time when the cordless telephone passes through zones Z ₁₁ and Z ₁₂ installed on the main line R ₂ of the highway. When a cordless telephone travels on the main line to Z ₁₁ , Z ₁₂ , Z ₁₃ , and Z ₁₄ , the time required to pass through zones Z ₁₁ and Z ₁₂ is often the same. On the other hand, when traveling on the route R ₃ that descends from the expressway, the speed is reduced in the zone Z ₁₂ . Therefore, the time in zone Z ₁₂ is observed, and if it is longer than a certain time, the next zone is predicted as Z _17, and conversely, if the time in Z ₁₂ is shorter than the certain time, The zone is predicted to be Z ₁₄ and this prediction result is previously Z
Call ₁₇ and Z ₁₄ .

According to this embodiment, when the zone is switched, the next zone switching time of the mobile unit and the next zone to be switched can be predicted based on the past history.
Therefore, the procedure required for zone switching can be started prior to the generation of a zone switching request, and even a microcell type mobile phone can handle high-speed and high-frequency zone switching.

FIG. 7 is a diagram for explaining another embodiment according to the present invention. First, the principle of the wireless telephone system will be briefly described. The wireless communication terminal 11 has a function of transmitting position registration information, for example, the ID of the wireless communication terminal 11 and the like, and when the wireless communication terminal 11 is present within the call zone of the wireless telephone base station 13, the wireless communication terminal 11 is present. The individual information of 11 such as the ID of the wireless communication terminal 11 is reported to the wireless telephone base station 13. This information is stored in the radio telephone base station 13 or the storage device 15m in the radio telephone system control station 15, and in which radio telephone base station 13 the call zone 20 of the radio communication terminal 11 exists. Is always grasped by the system on the side of the radio telephone base station 13.

In this mobile communication device, the wireless communication terminal 11
When a call is received from a user, a transmission path is established from the user to the radio telephone base station 13 in which the radio communication terminal 11 exists, and between the user who requested the call and the radio communication terminal 11 that received the call. It is possible to call. However, the radio communication terminal 11 does not always exist in the call zone 110 of the radio telephone base station 13, and if the radio communication terminal 11 does not exist in the call zone 20, the above call transmission path cannot be established. Therefore, at least a paging system requiring a large zone base station 19 for paging only capable of calling the wireless communication terminal 11 in addition to a radio telephone system requiring a small zone base station 13 capable of making a radio telephone call as a mobile communication device. Two types of mobile communication devices are provided, and an information transmission path is provided between these systems.

The large paging zone base station 19 of the paging system is newly provided to cover an area which cannot be serviced by the small zone base station 13 for communication of the wireless telephone system, or a wireless communication base of an existing paging system. The station shall be used. At least one type of radio frequency band may be used in the radio telephone base station 13 and the paging base station 19.

The position information of the personal wireless communication terminal 11 is stored in the wireless telephone system side, and the communication method, that is, the wireless telephone or paging is selected based on the information. When the mobile communication device is present, the communication environment on the side of the wireless communication terminal 11 is an environment in which both calls and paging are possible, an environment in which only calls are possible, an environment in which only paging is possible, and neither calls nor paging are available. There are at least four possible environments, which will be referred to as environment A, environment B, environment C, and environment D, respectively. In which environment the wireless communication terminal 11 exists can be determined on the wireless communication terminal 11 side by monitoring the control channel of the closest wireless communication base station, for example, by monitoring the electric field strength level or frequency thereof, or Wireless communication terminal 1
Location registration information transmitted from the wireless communication terminal 11
The wireless communication base station side can also determine the ID signal and the like by monitoring the electric field strength level and the frequency thereof.

When these communication environments change, for example,
At least one of the wireless communication terminal 11 side and the wireless communication base station side is notified to the wireless communication terminal holder by sound or light, or by transmitting a signal to the wireless communication base station side to notify that effect. Always understand the communication environment. Further, the wireless communication terminal 11 has at least one function capable of making a wireless telephone call, and may have a function capable of paging only or a function of searching a communication environment by performing intermittent reception, and these functions are wirelessly transmitted. We will call them the telephone function, paging function, and battery saving function.

The radio communication terminal 11 automatically and preferentially selects one of these communication functions on the basis of each communication environment described above. For example, the wireless communication terminal 11 preferentially selects the wireless telephone function in the environment A and the environment B, and the paging function in the environment C, and in any communication environment, which function is selected is the closest wireless communication base station. The station is informed or the wireless communication terminal holder is informed by, for example, sound or light to know which communication function is selected on at least one of the mobile communication device side and the wireless communication terminal side.

In this case, the wireless communication base station system side determines which function is selected, or the wireless communication terminal 11 side determines in which communication environment it is placed, and the function or communication is performed. The wireless communication terminal 11 is called according to the environment. The user who requested the call is informed of which method, that is, the method of calling the wireless communication terminal 11 by telephone or paging. In the environment D, the wireless communication terminal 11 preferentially selects the battery saving function, and each wireless communication base station has a terminal ID.
Storage device for storing information, wireless telephone system control station 15
Has a wireless communication terminal ID, each wireless communication base station information, and a storage device 15m for storing information from a user, the wireless communication terminal 11 exists in the environment D, and the wireless communication terminal 11 is When a call is received from a certain user, the wireless communication base station temporarily holds the information from the user who requested the call in the storage device 15m.

Further, when the communication environment in which the wireless communication terminal 11 is receivable, that is, any one of the environment A, environment B, and environment C, is entered, the wireless communication terminal 11
If the position of the wireless communication base station is registered, the wireless communication base station to which the position of the wireless communication terminal 11 is transferred is transferred to the wireless communication base station to which the information is wirelessly communicated. The terminal 11 is notified by, for example, voice or character information.

The user who has requested the call automatically calls by the wireless telephone when the wireless communication terminal 11 is called by paging and when the wireless communication terminal 11 shifts from the paging function to the call function. A radio telephone base station 26 is installed at an entrance / exit to a specific radio wave obstacle 24, for example, an underground mall or a building.
Is provided, and the wireless communication terminal 11 is
For wireless communication terminal individual information, for example, wireless communication terminal 1
Report the ID of 1 to the mobile communication device side
It is possible to notify the entry / exit information to / from 4.

As a result, environment C and environment D can be identified. After the wireless communication terminal 11 enters this specific radio wave obstacle body, the communication environment is determined by the configuration state of the zone of the radio communication base station existing in the radio wave obstacle body 24, that is, the radio telephone station 28 or the paging station. , The wireless function is automatically selected.

The paging base station shown in FIG. 9 has not only the function of transmitting but also the function of receiving, and the location of the terminal can be registered by either the radio telephone base station or the paging base station.

As shown in FIG. 10, this small zone paging station or radio telephone base station is always installed at a specific radio wave obstruction, for example, at an entrance / exit to an underground mall or a building.

Referring to FIG. 11, there are two types of paging base stations, a large zone base station having a radius R and a small zone base station having a radius r existing on the zone boundary. Each of these small zone base stations has a terminal location registration function, a message transmission function with weak power to its own zone, and the like. A small zone base station with a radius r existing on the zone boundary of the large zone base station is arranged on a zone boundary where there is no large zone base station with a neighboring radius R. This small zone base station is used for information to enter and leave the large paging zone. Be sure to install either a base station for wireless telephones or a small zone base station for paging at the boundary with the radio dead zone including the inside of the radio interference and the outside of the wireless communication service,
It collects information on the entrance and exit of the terminal to and from the radio dead zone. Ratio of this zone radius R /
r is 2 or more and 32 or less. In this case, the number of small zone base stations existing in one large zone base station is 6 or more and 96 or less. The zone radius is the maximum distance from the base station where the radio waves from the base station can be received by the terminal, or the maximum distance from the base station where the radio waves from the terminal can be received by the base station. With such a configuration, the wireless communication service can be provided in an area slightly wider than the zone radius of the large zone paging station.

Referring to FIG. 12, radio waves from the terminal do not reach the paging station from the zone end of the large zone. However, the location registration information can be reported to the base station from the zone edge of the small zone. Therefore, the environment C and the environment D can be distinguished by disposing it on the boundary with the radio dead zone.

As shown in FIG. 13, paging base stations in the small zone belonging to the paging system exist in the paging base station in the large zone, and the base stations in these small zones exist in the large zone for paging. It is arranged to cover all the remaining areas not covered by the wireless telephone base stations. Each of these small zone base stations has a terminal location registration function, a message transmission function with weak power to its own zone, and the like.

There are two types of paging base stations: a large zone base station with a radius R and a small zone base station with a radius r. The ratio R / r of the zone radii is 2 or more and 32 or less. The zone radius is where the radio wave from the base station can be received by the terminal, or the maximum distance that the radio wave from the terminal can be received by the base station.

[0038]

As described above, according to the configuration of the present invention, it is possible to smoothly perform communication between different communication areas.

[Brief description of drawings]

FIG. 1 is a diagram illustrating prediction of zone switching time according to the present invention.

FIG. 2 is a diagram showing a road on which the prediction of the zone switching time shown in FIG. 1 is adopted and a zone continuously arranged along the road.

FIG. 3 is a diagram showing zones arranged continuously along a branch path.

FIG. 4 is a block diagram showing a configuration of a mobile communication device that predicts a zone switching time shown in FIG.

5 is a flowchart on the terminal side for explaining the processing procedure of the prediction operation of the zone switching time shown in FIG.

FIG. 6 is a flowchart on the base station side for explaining the processing procedure of the zone switching time prediction operation shown in FIG.

FIG. 7 is a block diagram showing a configuration of a mobile communication device according to a second invention.

FIG. 8 is a diagram illustrating a zone configuration.

FIG. 9 is a block diagram showing configurations of a paging station and a control station.

FIG. 10 is a diagram for explaining zones in a radio dead zone.

FIG. 11 is a diagram showing a relationship between a large zone by a large zone base station and a small zone by a small zone base station.

FIG. 12 is a diagram showing configurations of a paging station and a wireless telephone station.

FIG. 13 is a diagram showing configurations of a large zone paging station, a small zone paging station, and a wireless telephone station.

[Explanation of symbols]

1 CPU 3 radio section 5 clock section 7 memory 11 wireless communication terminals 13 Small zone base station for wireless telephone 15 Wireless telephone system control station 17 Paging system control station 19 Large zone base station for paging 20 small zones for wireless phones 22 large zone for paging 24 Radio wave obstacle 26 Entry / Exit Call Zone for Radio Obstacles 28 Talk Zone for Radio Obstacles 31 paging stations 33 control station 44 Radio wave obstacle 46 Talking zone 48 radio dead zone

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yutaka Asanuma             1 Komukai Toshiba Town Stock Association, Saiwai Ward, Kawasaki City, Kanagawa Prefecture             Inside Toshiba Research Institute

Claims (4)

[Claims] 1. A movement characterized in that, when a mobile body moves between communication areas whose range is specified, a prediction regarding a communication area to be invaded next is made based on a history of the movement of the mobile body. Communication method. 2. A storage unit that stores a history relating to the movement of a mobile body when moving between communication areas whose range is specified, and the vehicle intrudes next based on the history stored in the storage unit. Mobile communication device, comprising: a prediction unit that makes a prediction related to a communication area to be inspected; and a control unit that performs a control corresponding to a communication area that is expected to invade next based on the prediction of the prediction unit. . 3. A radiotelephone system having a narrow range for a radiotelephone and a paging system having a wide range for paging coexist in the same area, and an information transmission path is provided between these systems to provide a radiotelephone. When calling a wireless communication terminal having a system-related function and a paging system-related function, when the wireless communication terminal is outside the range of the wireless telephone system, the paging system calls the wireless communication terminal unit. Mobile communication method. 4. A wireless telephone system having a specific range for a wireless telephone, a wireless communication terminal having a function related to this wireless telephone system, and the wireless communication terminal when the wireless communication terminal calls the wireless communication terminal. When it is confirmed that the call is out of the range, a storage unit that stores the call, a call related to the wireless communication terminal may be stored in the storage unit, and the wireless communication terminal may be within the specific range. A mobile communication device, comprising a calling means for calling the wireless communication terminal based on the storage when confirmed.