JP2685827B2 - Mobile radio location registration method - Google Patents

Description

Description: [Object of the Invention] (Industrial field of application) The present invention relates to a location registration system for a mobile communication system having a plurality of mobile wireless devices moving within a plurality of wireless zones.

(Prior art) Conventionally, a wireless zone (or service area)
There is a mobile communication system in which a plurality of fixed wireless devices are arranged so as to partially overlap each other, and communication is performed between a mobile wireless device moving in each wireless zone and a wired telephone line.

FIG. 2 is a block diagram showing a general configuration of this type of mobile communication system, and FIG. 3 is a diagram showing an example of a position registration sequence diagram of a mobile radio device in the mobile communication system.

In FIG. 2, 3a to 3e are mobile wireless devices, 41 to 43 are fixed wireless devices, 51 to 53 are wireless zones, 6a to 6e are wired telephone lines,
Reference numeral 7 is a line control device.

Here, 3a is 6a, 3b is 6b, 3c is 6c, 3d is 6d,
3e corresponds to 6e, respectively. Further, 51 to 53 are wireless zones covered by the fixed wireless devices 41 to 43, respectively.

First, the line connection operation in this mobile communication system will be described.

When there is an incoming call to the wired telephone line 6a, the line control device 7 activates the fixed wireless device 41 in the wireless zone 51 in which the mobile wireless device 3a corresponding to the line 6a exists, and the incoming call signal is sent from the fixed wireless device 41. Send it.

Upon receiving the incoming call signal, the mobile radio 3a sounds a sounder to notify the user. When the user responds to this notification off-hook, the mobile wireless device 3a returns a response signal to the line control device 7 via the fixed wireless device 41.

The line controller 7 detects this response signal and
6a is connected to the fixed radio device 41 to enable communication between the line 6a and the mobile radio device 3a.

By the way, when the line control device 7 sends an incoming call signal to the mobile radio device 3a via the fixed radio device 41 when an incoming call is made to the wired telephone line 6a, the line control device 7 needs to be connected to the mobile radio device 3a.
It is necessary to know in advance that the location of the device is the wireless zone 51.

Therefore, generally, the above-mentioned request is answered by registering the position of the mobile radio device according to the sequence shown in FIG.

First, the mobile wireless device 3a transmits the position registration signal A (including the mobile wireless device identification signal) by pressing the position registration button.

The fixed wireless devices 41 and 42 which have received the position registration signal A send the position registration signal B to the line control device 7.

The position registration signal B includes an identification signal of the mobile wireless device, a signal indicating the reception level of the signal A, and the like.

Therefore, the line control device 7 determines, for example, that the nearest fixed wireless device to the mobile wireless device 3a is 41 based on the signal indicating the reception level in the position registration signal B received from the fixed wireless devices 41 and 42. It is possible to determine that the next fixed radio (nearby) is 42.

Next, the line control device 7 sends a registration completion signal C to the nearest fixed radio device 41 and a registration completion signal D to the nearby fixed radio device 42 based on this determination result.

Here, the registration completion signal C includes the identification signal of the mobile wireless device 3a and the identification signal of the fixed wireless device 42 in the vicinity.

Upon receiving the registration completion signal C, the fixed wireless device 41 transmits a registration completion signal E to the mobile wireless device 3a.

The registration completion signal E includes the identification signal of the mobile wireless device 3a and the identification signals of the nearest fixed wireless device 41 and the nearby fixed wireless device 42.

With such a sequence, the line control device 7
It can be understood that the wireless zone in which the mobile wireless device 3a is located is 51, the nearest fixed wireless device is 41, and the nearby fixed wireless device is 42.

On the other hand, in such a system in which one fixed radio is commonly used by a plurality of mobile radios to make a call to a wired telephone line, a specific fixed radio is given priority to a specific mobile radio. There is an operation form to be used. For example, the second
This is a form in which the fixed wireless device 41 in the figure is preferentially used by the mobile wireless device 3a.

FIG. 4 shows the line control device 7 in the operation mode as described above.
It is a figure which shows the position registration sequence of. In the figure, if the line control device 7 receives a position registration signal B corresponding to the position registration signal A from the mobile wireless device 3a from any of the fixed wireless devices, the content of the signal indicating the reception level included in the position registration signal B will be described. It is determined whether or not is greater than or equal to a predetermined value (S1). Next, it is determined whether or not the fixed wireless device that has transmitted the position registration signal B is the fixed wireless device 41 corresponding to the mobile wireless device 3a for which the priority use right is set (S2). The above
If the condition is satisfied, the fixed wireless device that has transmitted the position registration signal B is determined as the nearest fixed wireless device to the mobile wireless device 3a (S3). However, if the above conditions are not met, normal processing is performed (S4).

Therefore, even if the mobile radio 3a is located closer to the fixed radio 42 than the fixed radio 41, the fixed radio 41
Receives the position registration signal A from the mobile wireless device 3a and the reception level is equal to or higher than a predetermined value, the fixed wireless device 41 is determined as the nearest fixed wireless device, and thus the mobile wireless device 3a is fixed. It becomes possible to preferentially use the wireless device 41.

(Problems to be Solved by the Invention) However, when performing position registration for preferentially using a specific fixed wireless device with respect to a specific mobile wireless device, the line control device 7, as described above, receives the position registration signal A. Of the reception levels of the above, and whether or not the reception level is equal to or higher than a predetermined value, and whether or not the fixed radio that has transmitted the position registration signal B corresponds to a specific mobile radio is determined. I have to do something. For this reason, the processing time for a specific mobile wireless device to which the priority use right is set increases, and the call processing time for another mobile wireless device decreases,
As a result, there is a problem that the traffic volume of the system is reduced.

An object of the present invention is to provide a location registration method for a mobile communication system that can simplify processing for a specific mobile wireless device and improve call processing capability as a system.

[Structure of the Invention] (Means for Solving the Problems) According to the present invention, a fixed attribute is set in each of a fixed wireless device and a mobile wireless device, and the fixed wireless device has an attribute that matches its own attribute. When the reception level of the location registration signal from the device is higher than a predetermined value, a signal showing a value higher than the actual reception level is sent to the line control device to allow the line control device to identify the wireless zone. Due to
The above object is achieved.

(Operation) Whether or not the position registration signal from a specific mobile wireless device is equal to or higher than a predetermined level, and whether the attribute of the mobile wireless device that has transmitted the position registration signal and the attribute of the fixed wireless device match or not is determined by the fixed wireless device. If the condition is met, a signal indicating a value higher than the actual reception level of the location registration signal is transmitted to the line control device. Therefore, the line control device can determine the fixed wireless device to be preferentially used by a specific mobile wireless device only by comparing the reception levels.

(Embodiment) FIG. 1 is a flowchart showing an embodiment of the location registration processing in the present invention, and the processing shown here is executed by a fixed wireless device. In the figure, when the position registration signal A is received from the mobile wireless device (S10), it is first checked whether or not the reception level is equal to or higher than a predetermined value (S11). If it is equal to or more than the predetermined value, it is checked whether or not its own attribute and the attribute of the mobile wireless device that has transmitted the position registration signal A match (S10), and if they match, the actual reception of the position registration signal A The correction value α is added to the level LV, the result of this addition is determined as the reception level for notifying the line control device, and the result is included in the position registration signal B and transmitted to the line control device (S13, S14). .

On the other hand, when the reception level of the position registration signal A is not more than the predetermined value or when the attributes do not match, the actual reception level of the position registration signal A is included in the position registration signal B without any correction. To send.

On the other hand, the line control device determines which of the fixed radios is the closest to the mobile radio by comparing the reception levels of the position registration signal A included in the position registration signal B with each other. Since the received level of the position registration signal A in the mobile wireless device is corrected to a high value of α only by the above-described processing, the fixed wireless device determined to be preferentially used by a specific mobile wireless device has the highest priority. It will be decided as a local fixed radio.

Therefore, it becomes unnecessary for the line control device to judge the reception level of the position registration signal A and the attributes of the mobile radio and the fixed radio. As a result, it is possible to increase the time distribution for call processing of other mobile wireless devices, and it is possible to improve the call processing capacity of the entire system.

By the way, as attributes set in the fixed wireless device and the mobile wireless device, types such as the most important user, the important user, and the home user whose predetermined place is specified can be provided. Further, the ratio of mobile radios and fixed radios having such attributes is N: M, 1; N, N: 1,1: depending on the user type.
1 (however, N, an integer of M ≧ 1) can be freely selected. Further, the value of the correction value α added to the reception level LV of the position registration signal A may be variably set according to the user type.

[Effects of the Invention] As described above, according to the present invention, the position registration signal from the mobile wireless device that matches the attribute of the fixed wireless device itself is notified to the line controller by setting the reception level to a high value. As a result, the line control device can determine the fixed radio corresponding to the specific mobile radio by only a simple relative comparison of the reception levels, and as a result, the call processing capability of the entire system is improved. The effect that can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a flow chart showing an embodiment of location registration processing in the present invention, FIG. 2 is a block diagram showing a general configuration of a mobile communication system, and FIG. 3 is a sequence showing a location registration operation in the configuration of FIG. 4 and 5 are flowcharts showing a conventional position registration process for giving priority to a fixed wireless device for a specific user. 3a-3e: Mobile radio, 41-43: Fixed radio, 51-53
… Wireless zone, 6a to 6e… Wired telephone line, 7… Line control device.

Front Page Continuation (72) Inventor Yasuo Mizutori 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Norio Rio Ishikawa 1-3-1, Asahigaoka, Hino City, Tokyo Toshiba Hino Corporation in the factory

Claims (1)

(57) [Claims] 1. A plurality of mobile wireless devices, a plurality of fixed wireless devices that form a wireless line between these mobile wireless devices, and a connection between these fixed wireless devices and a plurality of wired telephone lines. A line control device that forms a communication path between the mobile wireless device and the wired telephone line, and transmits a position registration signal from the mobile wireless device, and a plurality of fixed wireless devices that have received the signal transmit the position registration signal. To the line control device, and the line control device identifies which fixed radio device each mobile radio device is located within the radio zone of the mobile radio device based on the reception level signal. Notify the mobile wireless device that sent the location registration signal while storing the identification result,
In a mobile communication system in which a wireless line is configured by using the fixed wireless device that has been stored and notified in response to an outgoing call from a mobile wireless device or an incoming call from a wired telephone line, predetermined attributes are assigned to each of the fixed wireless device and the mobile wireless device. The fixed radio sets a signal indicating a higher value than the actual reception level to the position registration signal from the mobile radio that has an attribute that matches its own attribute if the reception level is higher than a predetermined value. A position registration method for mobile radios, which is characterized in that it is sent to the line control device and the line control device identifies the wireless zone.