JP2004241904A - Radio communication apparatus, public land mobile network selection method in radio communication apparatus, and program - Google Patents

Abstract

An object of the present invention is to enable efficient selection of a PLMN in a short time.
A wireless communication device includes a position information detection unit, a PLMN selection unit, a PLMN registration unit, and a control unit. The validity of the registered PLMN is determined, and if the registered PLMN is not valid, the registered PLMN is located nearby using the position information such as the current position of the own device which is the mobile station detected by the position information detecting unit 12. The PLMN to be selected is assigned a high priority, and the PLMN is selected. As a result, it is possible to efficiently execute the PLMN selection and finish the processing in a shorter time.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wireless communication device such as a mobile phone device, a method for selecting a public land mobile network in the wireless communication device, and a program.
[0002]
[Prior art]
A wireless communication device such as a mobile phone device is used as a mobile station of a mobile communication system, and performs wireless communication with base stations installed in various places. This type of wireless communication device attempts to connect to the PLMN after power-on or when returning to the service area from outside the area outside the range covered by the public land mobile network (PLMN). (See, for example, Patent Documents 1 to 3).
[0003]
Hereinafter, a conventional general PLMN selection method will be described. FIG. 4 is a flowchart illustrating an example of a PLMN selection method in a UMTS / GSM dual-mode wireless communication apparatus according to a conventional UMTS (Universal Mobile Telecommunications System) and a GSM (Global System for Mobile Communications) corresponding to two conventional wireless communication systems. It is.
[0004]
First, it is determined whether REGISTERED PLMN is stored in the mobile station (step S401). The REGISTERED PLMN is the last PLMN that the mobile station has registered with the network when the power is turned off or before the mobile station goes out of the range covered by the network. If REGISTERED PLMN is stored in the mobile station, the process proceeds to step S402. If REGISTERD PLMN is not stored, the process proceeds to step S405.
[0005]
Next, in step S401, if the REGISTERD PLMN is stored in the mobile station, the REGISTERD PLMN is selected as a target for PLMN registration (step S402).
[0006]
Then, PLMN registration is executed (step S403).
Thereafter, it is determined whether the attempted registration of the PLMN is successful (step S404). If the PLMN registration is successful, the PLMN selection flow ends. If the PLMN registration has not been successful, the process proceeds to step S405.
[0007]
If the registered PLMN is not stored in step S401, or if the registration of the PLMN is not successful in step S404, it is determined whether the PLMN previously selected and tried to be registered in the PLMN selection processing flow is valid. A determination is made (step S405). If the PLMN that was previously selected and attempted to be registered becomes valid, the process proceeds to step S407. If it is not valid, go to step S406.
[0008]
If the PLMN previously selected and attempted to be registered is not valid in step S405, the PLMN in the list stored in the mobile station is selected (step S406). Thereafter, the process returns to step S403 to continue the processing.
[0009]
If the PLMN that was previously selected and tried to be registered in step S405 becomes valid, the PLMN that has become valid is selected (step S407). Thereafter, the process returns to step S403 to continue the processing.
[0010]
PLMN selection is performed according to the processing procedure described above.
[0011]
[Patent Document 1]
JP 2001-211184 A [Patent Document 2]
JP 2001-189715 A [Patent Document 3]
JP 2000-514267 A
[Problems to be solved by the invention]
However, in the conventional PLMN selection method of the UMTS / GSM dual mode wireless communication device as described above, the PLMN selection is repeatedly performed until the PLMN registration succeeds, and the PLMN is assigned with a priority independent of the position of the mobile station. You have selected. Therefore, there is a problem that a process of selecting a PLMN not accommodating a mobile station first and failing to register the PLMN is repeated, and it takes time until the PLMN selection is completed.
[0013]
SUMMARY An advantage of some aspects of the invention is to provide a wireless communication device capable of performing efficient selection of a public land mobile network in a short time, and a public land mobile device in the wireless communication device. A mobile network selection method and a program are provided.
[0014]
[Means for Solving the Problems]
A wireless communication device according to the present invention is a wireless communication device that performs wireless communication with a public land mobile network, the public land mobile network selecting means for selecting a public land mobile network to be communicated with, and the selected public land mobile network. Public land mobile network registration means for registering a mobile network, and position information detection means for detecting the position information of the own device, the public land mobile network selection means, the position information detected by the position information detection means And selecting the public land mobile network using the public land mobile network.
[0015]
According to the above configuration, by using the position information detected by the position information detecting means, the selection of the public land mobile network (PLMN) executed by the public land mobile network selecting means can be completed in a shorter time. It becomes.
[0016]
A public land mobile network selecting method according to the present invention is a public land mobile network selecting method in a wireless communication device that performs wireless communication with a public land mobile network, and the effectiveness of the registered public land mobile network to be communicated is determined. A validity judging step of judging the presence or absence, a position information detecting step of detecting the position information of the own device, and the detecting when the validity of the registered public land mobile network is denied in the validity judging step. A public land mobile network selection step of selecting a new public land mobile network based on the obtained location information.
[0017]
According to the above procedure, the selection of the public land mobile network (PLMN) can be performed more efficiently, and the processing time can be reduced.
[0018]
Further, as one aspect of the present invention, the public land mobile network selecting step includes a first selecting step of selecting a new public land mobile network based on newly acquired position information, and a new public land mobile network based on predetermined data. A second selection step of selecting a land mobile network.
[0019]
According to the above procedure, using the position information of the wireless communication device serving as the mobile station, based on the newly acquired position information and the stored predetermined data on the public land mobile network, the wireless communication device is located near the wireless communication device. Priorities are assigned to the public land mobile networks to be selected, and efficient public land mobile network selection can be performed.
[0020]
The present invention also provides a program for causing a computer to execute the procedure of the public land mobile network selection method described in any of the above. By causing a computer including a processor or the like to execute this program, the public land mobile network selection method of the present invention is realized.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a schematic configuration of a wireless communication device according to an embodiment of the present invention.
[0022]
The wireless communication device 10 according to the present embodiment is used as a mobile station of a mobile communication system, and includes a wireless communication unit 11 that supports a wireless communication system such as WCDMA (Wideband Code Division Multiple Access), GSM, etc. A position information detecting unit (corresponding to a position information detecting unit) 12 for detecting position information such as a position; a PLMN selecting unit (corresponding to a public land mobile network selecting unit) for selecting a public land mobile network (PLMN) to be communicated with; ) 13, a PLMN registration unit (corresponding to a public land mobile network registration unit) 14 for registering the selected PLMN, and a control unit 15.
[0023]
The control unit 15 controls processing of each unit in the position information detection unit 12, the PLMN selection unit 13, and the PLMN registration unit 14. The control unit 15 includes a CPU (or DSP), storage means, and the like, and its basic operation is determined by software and can be changed.
[0024]
In the PLMN selection unit 13, the wireless communication device 10 determines the priority of PLMN selection using its own position information detected by the position information detection unit 12. Thus, the PLMN selection can be completed in a shorter time. The position information detection unit 12 detects the current position of the own device by, for example, a GPS receiving unit or the like.
[0025]
Hereinafter, the PLMN selection method according to the present embodiment will be described. FIG. 2 is a flowchart illustrating an execution procedure of the PLMN selection method according to the present embodiment. This method is executed by the wireless communication device 10 shown in FIG.
[0026]
First, the control unit 15 determines whether REGISTERED PLMN is stored in the PLMN registration unit 14 (Step S201). The REGISTERED PLMN is the last PLMN that the mobile station has registered with the network when the power is turned off or before the mobile station goes out of the range covered by the network. If REGISTERD PLMN is stored, the process proceeds to step S202. When REGISTERD PLMN is not stored, the process proceeds to step S205.
[0027]
In step S201, when the REGISTERD PLMN is stored, the control unit 15 selects the REGISTERD PLMN as a PLMN registration target (step S202).
[0028]
Next, the control unit 15 registers the PLMN in the PLMN registration unit 14 (Step S203).
[0029]
Then, the control unit 15 determines whether the attempted registration of the PLMN is successful (Step S204). If the PLMN registration is successful, the PLMN selection flow ends. If the PLMN registration has not been successful, the process proceeds to step S205.
[0030]
If the registered PLMN is not stored in step S201, or if the registration of the PLMN is not successful in step S204, it is determined whether the PLMN previously selected and tried to be registered in the PLMN selection processing flow is valid. A determination is made (step S205). If the PLMN that was previously selected and attempted to be registered becomes valid, the process proceeds to step S207. If it is not valid, go to step S206.
[0031]
If the PLMN previously selected and tried to be registered is not valid in step S205, the PLMN selection unit 13 selects the PLMN using the position information detected by the position information detection unit 12 (details will be described later) (step S206). ). Thereafter, the process returns to step S203 to continue the processing.
[0032]
If the PLMN previously selected and tried to be registered in step S205 becomes valid, the PLMN selection unit 13 selects the valid PLMN (step S207). Thereafter, the process returns to step S203 to continue the processing.
[0033]
Here, the procedure of PLMN selection using the position information in step S206 will be described in detail. In this procedure, the PLMN selector 13 selects an appropriate PLMN based on the position information detected by the position information detector 12. FIG. 3 is a flowchart illustrating a procedure of the PLMN selection method using the position information according to the present embodiment.
[0034]
First, it is determined whether the HPLMN has already been selected (step S301). Here, the HPLMN is a Home PLMN, which refers to a carrier and a country PLMN registered in the International Mobile Subscriber Identity of the subscriber. If HPLMN has been selected, the process proceeds to step S303. If HPLMN has not been selected, the process proceeds to step S302.
[0035]
In step S301, when the HPLMN has not been selected, the PLMN selection unit 13 compares each of the plurality of existing HPLMNs with the location ranges of the HPLMNs and the current position of the mobile station detected by the position information detection unit 12, and selects the closer one. The HPLMN is preferentially selected (step S302). This ends the PLMN selection.
[0036]
If the HPLMN has been selected in step S301, it is determined whether all of the PLMNs in the “User Controlled PLMN Selector with Access Technology” data stored in the SIM in the mobile station have been selected (step S303). ). The SIM is a Subscriber Identity Module, that is, a subscriber identification module, and the Access Technology is a wireless access technology such as GSM and UMTS. If all the PLMNs in the data have been selected, the process proceeds to step S305. If all the PLMNs in the data have not been selected, that is, if there is at least one PLMN that has not been completed, the process proceeds to step S304.
[0037]
If all the PLMNs in the data have not been selected in step S303, the PLMNs stored in the “User Controlled PLMN Selector with Access Technology” data area are selected according to the priority determined based on the position information (step S303). S304). The data area of "User Controlled PLMN Selector with Access Technology" in this step can be rewritten manually by a user or automatically by using a control program. Therefore, the user can change the order of the PLMNs to be selected by defining the priority. In the present embodiment, the current position of the mobile station is detected by using the position information detecting unit 12, and the position of the mobile station is determined by the mobile station. A priority order for giving a higher priority to a nearby PLMN is set, and the PLMN selection unit 13 selects a PLMN closest to the mobile station first. This ends the PLMN selection.
[0038]
Also, in step S303, if all the PLMNs in the data have been selected, it is determined whether or not all the PLMNs in the “Operator Controlled PLMN Selector with Access Technology” data stored in the SIM in the mobile station have been selected. A determination is made (step S305). It should be noted that the “Operator Controlled PLMN Selector with Access Technology” data is not allowed to be changed by the user. If all the PLMNs in the data have been selected, the process proceeds to step S307. If all the PLMNs in the data have not been selected, the process proceeds to step S306.
[0039]
Next, in step S305, if all of the PLMNs in the data have not been selected, the PLMN in the “Operator Controlled PLMN Selector with Access Technology” data is selected (step S306). This ends the PLMN selection.
[0040]
If all the PLMNs in the data have been selected in step S305, it is determined whether all other PLMN / Access Technology combinations having a signal level exceeding the reference value have been selected (step S307). If all the PLMNs have been selected, the process proceeds to step S309. If all of the PLMNs have not been selected, the process proceeds to step S308.
[0041]
If all of the PLMNs have not been selected in step S307, another PLMN / Access Technology combination having a signal level exceeding the reference value is randomly selected (step S308). This ends the PLMN selection.
[0042]
If all the PLMNs have been selected in step S307, it is determined whether all the PLMNs have been selected in the procedure of selecting PLMNs in order of signal strength for other PLMN / Access Technology combinations. (Step S309). If all of these PLMNs have been selected, the process proceeds to step S311. If all of the target PLMNs have not been selected, the process proceeds to step S310.
[0043]
Next, in step S309, if all of the target PLMNs have not been selected, when the PLMNs are selected in the order of signal strength for other PLMN / Access Technology combinations, the position information is detected by the position information detecting unit 12. The mobile station assigns a higher priority to the PLMN near the current position of the mobile station, and selects the PLMN according to the priority. (Step S310). This ends the PLMN selection.
[0044]
If all of the PLMNs have been selected in step S309, the process waits until a PLMN that is selectable and permitted by the network appears (step S311).
[0045]
Then, it is determined whether a selectable and permitted PLMN has appeared (step S312). If the PLMN has appeared, the process returns to step S301 to continue the processing. If the PLMN does not appear, the process waits for the appearance of a selectable and permitted PLMN again in step S311.
[0046]
According to the above-described procedure, in the present embodiment, the position information detecting unit 12 detects the current position information of the mobile station, and uses this position information to give a higher priority to the PLMN to be selected close to the mobile station. By setting the order, selection of a PLMN not accommodating a mobile station can be avoided as much as possible, and PLMN selection can be completed in a shorter time.
[0047]
In the PLMN selection method described in the present embodiment, each function can be realized by executing, by a computer, a program that performs an operation including the above procedure. This program is recorded on a recording medium such as a computer-readable memory, and is executed by being read from the recording medium by the computer.
[0048]
As described above, according to the present embodiment, when selecting a PLMN, by using the position information of the wireless communication device serving as a mobile station, it is possible to reduce PLMN selection and registration failures, and to efficiently perform PLMN selection. It can be completed in a shorter time.
[0049]
The embodiment of the present invention has been described with reference to the drawings. However, the present invention is not limited to the matters described in the embodiment, and can be implemented in various modes without departing from the gist thereof.
[0050]
【The invention's effect】
As described above, according to the wireless communication apparatus of the present invention, and the method and program for selecting a public land mobile network in the wireless communication apparatus, it is possible to efficiently and efficiently select a public land mobile network. Is obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a schematic configuration of a wireless communication apparatus according to an embodiment of the present invention; FIG. 2 is a flowchart illustrating an execution procedure of a PLMN selection method according to the present embodiment; FIG. 4 is a flowchart showing a procedure of a PLMN selection method used. FIG. 4 is a flowchart showing an example of a procedure of a conventional PLMN selection method.
Reference Signs List 10 wireless communication device 11 wireless communication unit 12 position information detection unit 13 PLMN selection unit 14 PLMN registration unit 15 control unit

Claims (4)

A wireless communication device that performs wireless communication with a public land mobile network,
A public land mobile network selecting means for selecting a public land mobile network to be communicated,
Public land mobile network registration means for registering the selected public land mobile network,
Comprising position information detecting means for detecting position information of the own device,
The wireless communication apparatus, wherein the public land mobile network selecting means selects the public land mobile network using the position information detected by the position information detecting means. A method for selecting a public land mobile network in a wireless communication device that performs wireless communication with a public land mobile network,
Validity determining step of determining the validity of the registered public land mobile network to be communicated;
A position information detecting step of detecting position information of the own device;
When the validity of the registered public land mobile network is denied in the validity determining step, based on the detected position information, a public land mobile network selecting step of selecting a new public land mobile network,
A method for selecting a public land mobile network, comprising: The public land mobile network selecting step is a first selecting step of selecting a new public land mobile network based on the newly acquired position information;
Selecting a new public land mobile network based on predetermined data. 2. The method according to claim 2, further comprising the steps of: A program for causing a computer to execute the procedure of the public land mobile network selection method according to claim 2 or 3.

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