JPH07154852A - Mobile communication method and mobile station equipment therefor - Google Patents

Abstract

PURPOSE:To enable movement over a wide range by retrieving the same group information of a base station as the group information stored in the present station when reception base station information matches the base station information stored in the present station can not be obtained in a mobile station and defining the base station information as the base station information of the present station when they match each other. CONSTITUTION:The mobile station 13 communicates with the base stations 121-12n, the group information G1 indicating that the base stations 121-12n are a specified group is provided and the group information G1 is reported respectively from the base stations 121-12n as well. Then, when the mobile station 13 which once communicated with the base station 121 inside a service area 111 and stores the base station information ID1 moves to the service area 112, since the group information G1 reported by the base station 122 and the group information G1 of the mobile station coincide, the mobile station 13 newly stores the base station information ID2 of the base station 122 in an ID storage part 22. Thus, communication with the base station 122 becomes possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to, for example, a cordless telephone system, in which different base station information (base ID) is reported from each base station, and a mobile station stores its own stored base station information and receiving base station. The present invention relates to a mobile communication method and a mobile station device that enable communication with the base station when the information matches.

[0002]

2. Description of the Related Art FIG. 3A shows a conventional mobile communication system. The base station 1 is provided in each of the service areas 11 _{1 to} 11 _n.
2 ₁ to 12 _n are provided, the base stations 12 _1, different base station information ID from the base station 12 ₂ to the base station 12 _n
1, ID2 to IDn are notified, and the mobile station 13 stores base station information of a communicable base station, for example, ID1.

When a communication request is generated at the mobile station 13 (S ₁ ), the base station information ID reported from the base station is searched as shown in FIG. 3B (S ₂ ), and the received base station information and the mobile station are searched. Compares with the base station information ID 1 stored by itself (S ₃ ), and if they match, it becomes possible to communicate with the base station reporting the base station information, in this example, the base station 12 ₁ . If they do not match, communication is not possible and a call is lost. In this example, the mobile station 13 is an area other than the service area 11 ₁ .
For example, even if the user moves to the service area 11 ₂ and makes a communication request to the base station 12 ₂ having ID2, communication becomes impossible.

FIG. 4A shows a functional configuration of a base station required to realize such a communication request system. The base station includes a central control device 15, an ID storage unit 16, and a transmission / reception device 17. The functional configuration of the mobile station 13 is shown in FIG. 4B. The mobile station includes a central control device 21, an ID storage unit 22, an ID search unit 23, an ID comparison unit 24, and a transmission / reception device 25.

Each base station 12i reports the base station information IDi stored in the ID storage unit 16, and the mobile station 13 receives the received base station information ID and I obtained by the ID search unit 23.
The base station information ID stored in the D storage unit 22 is
The D comparison unit 24 makes a communication request by comparing in the above procedure.

[0006]

The base stations which are apart from each other to some extent have their own base station information, and this base station information cannot be freely changed. Although mobile stations often communicate with their base stations only within one region, eg, one building, it may be convenient to have the same mobile station available in multiple regions, eg, between multiple buildings. . However, in the conventional communication request as described above, the base station information of the plurality of base stations are different from each other, and the base station information cannot be changed. Same base station information as
It has a drawback that it can communicate only with one base station that is reporting D.

It is an object of the present invention to provide a mobile communication method and a mobile station apparatus that allow a mobile station to communicate with any of a plurality of predetermined base stations.

[0008]

According to the invention of claim 1, apart from the base station information ID, a plurality of base stations which allow communication to the same mobile station belong to the same group. Meaning group information is provided, the group information is also notified from these base stations, the mobile station stores the group information indicating the group of base stations that the mobile station receives service, and the received base station information is the own station. If it does not match the base station information stored in, the received group information is compared with the group information of the mobile station, and if they match, the base station information ID notified by the base station transmitting the group information is sent to the local station. Stored in, and enables communication with the base station.

According to the second aspect of the present invention, if the storage unit for storing the group information does not match the receiving base station information and the own storing base station information, the receiving group information is compared with the group information stored in the own station. And a means for storing the base station information received at the same time as the reception of the reception group information when the comparison is matched, as the own station base station information.

[0010]

With this configuration, if the mobile station cannot obtain the receiving base station information that matches the base station information stored in the mobile station,
When the group information from the same base station is searched for when it matches with the memory group information of its own station, the base station information of that base station is newly stored as the base station information of its own station, and a request for communication is made. A station can communicate with a plurality of base stations in the same group in each area.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A shows an embodiment of the invention of claim 1, and the same reference numerals are given to the portions corresponding to those of FIG. 3A. Mobile station 13 which is in this example, in case that allows communication with the base station 12 ₁ to 12 _n, group information G1 indicating that the plurality of base stations 12 ₁ to 12 _n is a specific group is provided The base stations 12 _{1 to} 12 _n also notify the group information G1. The mobile station 13 also stores the group information G1.

As shown in FIG. 2A, the functional configuration of the base station used in the present invention is the same as that of the conventional base station shown in FIG. 4A.
A group information storage unit 18 that stores the group information G1 of the base station is added. The functional configuration of the mobile station 13 according to the invention of claim 2 is, as shown in FIG. 2B, a group of base station groups capable of making a communication request to the conventional mobile station shown in FIG. 4B. A group information storage unit 26 that stores the information G1, a group number search unit 27 that searches the group information notified by the base station, and a group that compares the searched group information and the group information G1 stored in the storage unit 26. When the information comparison unit 28 and the group information match, the base station information ID notified by the base station is written in the ID storage unit 22.
9 and 9 are added.

When a communication request is generated in the mobile station, FIG.
As shown in B, first, the base station information is searched for as in the conventional case (S ₂ ), and it is compared with the stored base station information of its own station (S ₃ ). If they match, communication is performed, but if they do not match ,
That mobile station moves to the service area of the base station with a different base station information ID storage base station information of own station, when performing a communication request, becomes mismatched in step S _3, the group information search section in the present invention The group information notified by the base station is searched at 27 (S ₄ ). Then, the group information obtained by the search and the group information G1 stored in the group number storage unit 26 are compared by the group information comparison unit 28 (S ₅ ), and if they match, the ID writing unit 29 makes the group. ID of the base station information ID of the base station transmitting the information
It is newly written and stored in the storage unit 22 (S ₆ ), and then communication is performed. If the group information does not match in step S ₅ , the call is lost.

Therefore, for example, as shown in FIG.
Area 11₁Within the base station 12₁Have communicated with
The mobile station 13 storing the base station information ID1 is the service area.
11 ₂When the mobile station 13 moves to the base station 12,₂of
Group information G1 to be notified and group information G1 of mobile station
And the base station 12₂Base station information ID
2 is newly stored in the ID storage unit 22, and the base station 12₂When
Communication becomes possible. In this case, of course, the mobile station 13
Ground station 12₂Group of base stations even when moving to areas other than
The information is the same as the group information G1 stored by the mobile station.
As long as the roaming is possible with the above method.

[0015]

As described above, according to the present invention, a mobile station can roam with respect to a plurality of base stations in the same group, and a wide range of mobile stations can be moved.

[Brief description of drawings]

FIG. 1A is a block diagram showing an embodiment of the invention of claim 1, and B is a flow chart showing a communication request processing procedure of the mobile station.

2A is a block diagram showing a functional configuration example of a base station in FIG. 1A, and B is a functional configuration diagram showing an embodiment of the invention of claim 2; FIG.

FIG. 3 is a block diagram showing a conventional mobile communication system, and B is a flow chart showing a communication request processing procedure of the mobile station.

4A is a block diagram showing a functional configuration of a base station in FIG. 3A, and B is a block diagram showing a functional configuration of a mobile station in FIG. 3A.

Claims (2)

[Claims] 1. Each base station broadcasts different base station information, and when the base station information broadcast by the base station matches the base station information stored by the mobile station, the base station is notified. In a mobile communication method that enables communication between a mobile station and a mobile station, group information indicating that a plurality of base stations form the same group is notified from each of the plurality of base stations, and stored in the mobile station. If the received base station information and the received base station information do not match, the group information stored by the mobile station is compared with the received group information, and if they match, the base station information received at the same time is transferred. A mobile communication method characterized by storing the data in a station and enabling communication with the base station. 2. A means for storing group information in a mobile station apparatus that enables communication with a base station transmitting the base station information when the received base station information matches the stored base station information. When the reception base station information and the stored base station information do not match, a means for comparing the reception group information with the stored group information, and if the comparison is the same, the reception group information is A mobile station device comprising: means for storing the received base station information from the transmitting base station as its own base station information.