JPH0657073B2 - Automatic location registration method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for mitigating location registration traffic in a mobile communication system in which wireless zones and location registration zones are the same and there are many relatively small wireless zones. Is.

(Prior Art) FIG. 2 shows a configuration of a mobile communication system to which the present invention is applied.

Here, since the wireless zone (call area) and the location registration zone are matched, when the cordless telephone 14 moves from the call area C in the permanent place to another call area B, the location registration is required in this method. The location information is performed as follows. Cordless telephones for location information (for example, notification of own connection device ID) that is reported for each wireless connection device
14 identifies and collates with the stored position information by itself, and if it is different, the cordless telephone 14 notifies the different position information to the wireless connection device, here the wireless line control device 11 automatically via 12b. Location registration. When located between the call areas B and C, the cordless telephone set 14 receives the position information from the wireless connection device 12c and performs the position registration again.

(Problems to be Solved by the Invention) That is, in the above technology, when the call areas overlap, the cordless telephone 14 performs the position information as many times as the number of the overlap call areas. This has a drawback that the cordless telephone 14, the wireless connection device 12, and the wireless line control device 11 have to perform the process for location registration many times.

It is an object of the present invention to reduce the number of location registrations by utilizing the overlap of wireless zones and to reduce the processing of the wireless line control device in a system configured by a large number of small wireless zones.

(Means for Solving the Problems) In the present invention, it is most preferable that the wireless line control device has a table storing the relationship between the connectable call areas in the system in a mobile communication system in which areas such as a premises often overlap. The main feature. That is, in a premises such as a building, it is difficult to construct a regular communication area because the structure and shape are complicated and irregular. Also, the call area is small and many. Therefore, the multi-station control method like the car telephone cannot be adopted, and the simple call area and the control area can be matched. In addition, to ensure that radio waves reach every corner, a call area configuration method that overlaps the call areas is adopted. In addition, the whole call area in this method is complicated because it is limited to one building etc.,
Management is easy. Therefore, in advance, measure the call area of the connection device in this system, and also measure the wireless connection devices in the same area that overlap and can connect to the call, and create a table of the wireless connection devices in the vicinity. It is possible to manage.

(Embodiment) FIG. 1 is a diagram showing a configuration of a mobile communication system to which the present invention is applied, in which 21 is a wireless line control device, 22a to 22e are wireless connection devices, 23a to 23e are call areas, and 24 is a cordless device. It is a telephone.

In FIG. 1, the wireless connection devices 22a to 22e broadcast position information, that is, position information including an identification signal of each wireless connection device under the instruction of the wireless line control device 21. As a notification method, radio waves having different frequencies for each wireless connection device may be sequentially transmitted, or the common frequency may be sequentially notified in time division.

The cordless telephone 24 stores a plurality of connectable position information and compares it with the position information notified from 22a to 22e. If the location information is different from the content stored in the cordless telephone 24, the cordless telephone 24 automatically makes a location registration request to the wireless connection device that has notified the location information. At this time, the wireless connection device that has received the position registration request transmits the identification signal of the cordless telephone to the wireless line control device 21. The wireless line control device 21 has a memory table corresponding to the wireless connection device 22 connectable to 24, and rewrites it with new information when the cordless telephone 24 requests location registration. Further, the present invention has a table as shown in Table 1 in which the areas in which communication is possible in the wireless zones 22a to 22e and the names of wireless connection devices in the periphery having an area overlapping the area are associated with each other. In order to make a table, the call areas of all the wireless connection devices are measured in advance, and the mutual relations between the areas, for example, the state of overlap, is evaluated, and peripheral wireless connection devices having overlapping call areas are selected. A table 1 of peripheral devices is created using the information represented by the identification signal of the wireless connection device.

The operation of this method will be described.

When the cordless telephone 24 is in the call area 23e, as shown in Table 1 as the connection destination wireless connection device, it stores 22d as a peripheral device in addition to the device 22e in its own call area. At the same time, it receives the position information reported by the devices 22e and 22d and confirms its own position. Here, when the user holding the cordless telephone 24 moves from the area 23e to the area 23a, the location information different from the stored location information is notified from the location 22a. Therefore, the cordless telephone 24 recognizes that it has moved and performs position registration in the wireless line control device 21 via the wireless connection device 22a. At that time, the wireless line control device 21 transmits the confirmation of the position registration to the cordless telephone 24, and also transmits the information of the peripheral wireless connection devices 22b and 22c which can be connected and which are obtained from the table of Table 1.
By storing 22b and 22c in addition to 22a, the cordless telephone 24 can store the names of peripheral devices that can be connected without waiting for the positional information sequentially notified from 22b and 22c, and can also be used for 22b and 22c. Therefore, it is not necessary to make a position registration request for each.

(Effects of the Invention) As described above, the wireless line control device has the table of the wireless connection devices in the surroundings, so that there is an advantage that the processing of the overlapping position registration in the overlapping communication area can be omitted.

[Brief description of drawings]

FIG. 1 shows an example of the configuration of a mobile communication system in which the call areas overlap, which is the feature of the present invention, and FIG. 2 shows a mobile communication system having a general call area configuration. It is a configuration example of. 10 ... PBX or LS corresponding to fixed telephone network, 11 ... Wireless line control device, 12 ... Wireless connection device, 13 ... Wireless connection device communication area, 14 ... Cordless telephone, 21 ... Wireless line control device, 22 ... Wireless connection Device, 23… wireless connection device talk area, 24… cordless telephone.

Claims (1)

[Claims] Claim: What is claimed is: 1. A cordless telephone system comprising a wireless connection device connected to a cordless telephone via a wireless line is used to control connection of a call connection area consisting of one or more call areas. In a mobile communication system in which a wireless network controller that stores and manages existing location information exists between the fixed telephone network and the wireless connection device for cordless telephones, the location information stored in the cordless telephone and the wireless connection device notifies When the new location information is different and the new location is automatically registered in the wireless network controller, the wireless network controller has a table that stores the relationship between multiple call connection areas in the system. , Searching a wireless connection device capable of making a call in the vicinity of the wireless connection device receiving the position registration request signal from the table, and regarding the search result, With location registration confirmation signal, by notifying against a cordless telephone which has requested the location registration, automatic position registration process, characterized in that can register the cordless telephone wireless connection device connectable multiple simultaneously.