CN105657789A - Device and method for network search in roaming state - Google Patents

Device and method for network search in roaming state Download PDF

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Publication number
CN105657789A
CN105657789A CN201610058110.2A CN201610058110A CN105657789A CN 105657789 A CN105657789 A CN 105657789A CN 201610058110 A CN201610058110 A CN 201610058110A CN 105657789 A CN105657789 A CN 105657789A
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CN
China
Prior art keywords
hplmn
current location
mobile terminal
described current
described
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CN201610058110.2A
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Chinese (zh)
Inventor
姚胜
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努比亚技术有限公司
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Priority to CN201610058110.2A priority Critical patent/CN105657789A/en
Publication of CN105657789A publication Critical patent/CN105657789A/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]

Abstract

The invention discloses a device and a method for network search in a roaming state. The method comprises the following steps: acquiring a current position of a mobile terminal; judging whether the current position is a position belonging to a home public land mobile network HPLMN; and if the current position is not the position belonging to the HPLMN, stopping searching the HPLMN. By means of acquiring the current position of the mobile terminal and judging whether the mobile terminal is in the position belonging to the HPLMN, when the current position is not in the position belonging to the HPLMN, network search of the HPLMN is stopped, thus, invalid occupation of radio resource is reduced, and then increase of power consumption and decrease of communication stability caused by network search are avoided.

Description

The apparatus and method of net are searched under a kind of roaming state

Technical field

The present invention relates to communication technical field, particularly relate to the apparatus and method searching net under a kind of roaming state.

Background technology

Search by mobile terminal network is firstly the need of selecting a PLMN_id, PLMN and public land mobile network (PublicLandMobileNetwork), every SIM card all can have HPLMN (HomePLMN) i.e. ownership place PLMN, HPLMN has the highest priority, can first removal search HPLMN when mobile terminal carries out searching net. When user leaves HPLMN, enter into other PLMN, the roaming that this process is just known as. For mobile terminal roaming service, it is necessary first to open the roaming function of SIM, after arriving roaming destination, mobile terminal can only be registered and SIM operator endorsed the local carrier network of roaming agreement. Wherein there are automatic roaming registration and manual Roaming Registration two kinds. Under roaming state, the PLMN network of mobile terminal registration is referred to as VPLMN (VistedPLMN) network.

For mobile terminal, owing to HPLMN has the highest priority, in line with allowing users to have the purpose of optimum network, registration mobile terminal on the vplmn can periodic removal search HPLMN or have other PLMN of higher priority, for HPLMN in this programme. Owing in Europe, North America has a lot of network operators, therefore user leaves HPLMN, and the situation entering VPLMN is much, and also may not be certain in the VPLMN time treated can be very long, therefore mobile terminal period go search HPLMN and will be understood by. But in China's Mainland, owing to only having three operators, and it is do not sign roaming agreement between three big operators, therefore occurs that mobile terminal is registered in the situation of VPLMN, must be that user goes abroad or goes to area, Hong Kong, Macao and Taiwan. But in general, after user goes abroad or goes to Hong Kong, Macao and Taiwan, continent can't be returned at once, therefore mobile terminal be registered in time of VPLMN can't be very short. If in this case, mobile terminal or periodically removal search HPLMN network, can take radio frequency resource always when searching net, it is possible to can miss some pagings of monitoring, increase the power consumption of mobile terminal, reduce the called call completion ratio of mobile terminal and the stability of data service.

Summary of the invention

Present invention is primarily targeted at the apparatus and method proposing to search net under a kind of roaming state, it is intended to solve radio frequency resource under roaming state and take the power consumption increase and communication stability that cause.

For achieving the above object, under a kind of roaming state provided by the invention, search the device of net, including:

Position acquisition unit, for obtaining the current location of mobile terminal;

Position judgment unit, is used for judging whether described current location is ownership place public land mobile network HPLMN belonging positions;

Searching net stop element, if not being HPLMN belonging positions for described current location, stop search HPLMN.

Wherein, described method, also include:

Change judging unit, for judging described current location is relative to whether the front result once obtained changes;

Again searching net unit, if changing relative to the front result once obtained for described current location, searching for the public land mobile network PLMN corresponding with described current location.

Wherein, described in search net stop element, specifically for:

If described current location is not HPLMN belonging positions, hplmn_flag is set to false, and sends the value of statistical indicant of hplmn_flag to modem protocol stack NAS layer by send () interface function.

Wherein, described device also includes:

Search network recovery unit, if becoming HPLMN belonging positions for described current location from non-HPLMN belonging positions, hplmn_flag being set to true, then passes through send () interface function, this value of statistical indicant is sent to modem protocol stack NAS layer.

Wherein, described current location is obtained by GPS or network positions;

Described HPLMN includes the HPLM that in described mobile terminal, multiple SIMs are corresponding.

Additionally, for achieving the above object, the present invention also proposes a kind of method searching net under roaming state, including:

Obtain the current location of mobile terminal;

Judge whether described current location is ownership place public land mobile network HPLMN belonging positions;

If described current location is not HPLMN belonging positions, stop search HPLMN.

Wherein, described method, also include:

Judge described current location is relative to whether the front result once obtained changes;

If changing, search for the public land mobile network PLMN corresponding with described current location.

Wherein, if described current location is not HPLMN belonging positions, stop search HPLMN, particularly as follows:

If described current location is not HPLMN belonging positions, hplmn_flag is set to false, and sends the value of statistical indicant of hplmn_flag to modem protocol stack NAS layer by send () interface function.

Wherein, described method also includes:

If described current location becomes HPLMN belonging positions from non-HPLMN belonging positions, hplmn_flag is set to true, then passes through send () interface function, this value of statistical indicant is sent to modem protocol stack NAS layer.

Wherein, described current location is obtained by GPS or network positions;

Described HPLMN includes the HPLM that in described mobile terminal, multiple SIMs are corresponding.

The apparatus and method of net are searched under the roaming state that the present invention proposes, by obtaining the current location of mobile terminal, judge whether mobile terminal is in HPLMN belonging positions, when current location is not at HPLMN belonging positions, what stop HPLMN searches net, reduce the ineffective occupation of radio frequency resource, and then avoid searching the power consumption that net causes and increase and the reduction of communication stability.

Accompanying drawing explanation

Fig. 1 is the hardware architecture diagram realizing each one optional mobile terminal of embodiment of the present invention;

Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1;

Fig. 3 is for searching the method flow diagram of the first embodiment of the method for net under a kind of roaming state of offer in the specific embodiment of the invention;

Fig. 4 A is for searching the method flow diagram of the second embodiment of the method for net under a kind of roaming state of offer in the specific embodiment of the invention;

Fig. 4 B is that in prior art, HPLMN searches network process schematic diagram;

Fig. 4 C in the specific embodiment of the invention provide a kind of roaming state under search net method the second embodiment in HPLMN search network process schematic diagram;

Fig. 5 is for searching the block diagram of the first embodiment of the device of net under a kind of roaming state of offer in the specific embodiment of the invention;

Fig. 6 is for searching the block diagram of the second embodiment of the device of net under a kind of roaming state of offer in the specific embodiment of the invention.

The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.

Detailed description of the invention

Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.

The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing. In follow-up description, use the suffix being used for representing such as " module ", " parts " or " unit " of element only for being conducive to the explanation of the present invention, itself do not have specific meaning. Therefore, " module " and " parts " can mixedly use.

Mobile terminal can be implemented in a variety of manners. Such as, the mobile terminal described in the present invention is mainly for mobile phone.

Fig. 1 is the hardware architecture diagram realizing each one optional mobile terminal of embodiment of the present invention.

Mobile terminal 100 can include wireless communication unit 110, user input unit 130, output unit 150, memorizer 160, controller 180 and power subsystem 190 etc. Fig. 1 illustrates the mobile terminal with various assembly, it should be understood that be not required for implementing all assemblies illustrated. Can alternatively implement more or less of assembly. Will be discussed in more detail below the element of mobile terminal.

Wireless communication unit 110 generally includes one or more assembly, and it allows the radio communication between mobile terminal 100 and wireless communication system or network. Such as, wireless communication unit can include at least one in mobile communication module 112, wireless Internet module 113 and positional information module 115.

Mobile communication module 112 sends radio signals at least one in base station (such as, access point, node B etc.), exterior terminal and server and/or receives from it radio signal. Such radio signal can include voice call signal, video calling signal or the various types of data sending according to text and/or Multimedia Message and/or receiving.

Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal. This module can internally or externally be couple to terminal. Wi-Fi (Wireless Internet Access) technology involved by this module can include WLAN (WLAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA (high-speed downlink packet access) etc.

Positional information module 115 is the module of positional information for checking or obtain mobile terminal. The typical case of positional information module is GPS (global positioning system). According to current technology, GPS module 115 calculates from the range information of three or more satellites and correct time information and the Information application triangulation for calculating, thus according to longitude, latitude with highly accurately calculate three-dimensional current location information. Currently, the method for calculating position and temporal information uses three satellites and the error by the position using an other satellite correction to calculate and temporal information. Additionally, GPS module 115 can calculate velocity information by Continuous plus current location information in real time.

User input unit 130 can generate key input data to control the various operations of mobile terminal according to the order of user's input. User input unit 130 allows user to input various types of information, and can include keyboard, metal dome, touch pad (such as, detection due to touched and cause resistance, pressure, electric capacity etc. the sensitive component of change), roller, rocking bar etc. Especially, when touch pad is superimposed upon on display unit 151 as a layer, it is possible to form touch screen.

Output unit 150 is configured to provide output signal (such as, audio signal, video signal, alarm signal, vibration signal etc.) with vision, audio frequency and/or tactile manner. Output unit 150 can include display unit 151, dio Output Modules 152 etc.

Display unit 151 may be displayed on the information processed in mobile terminal 100. Such as, when mobile terminal 100 is in telephone calling model, display unit 151 can show the user interface (UI) relevant with call or other communicate (such as, text messaging, multimedia file download etc.) or graphic user interface (GUI). When being in video calling pattern or image capture mode when mobile terminal 100, display unit 151 can show the image of image and/or the reception caught, UI or GUI illustrating video or image and correlation function etc.

Meanwhile, when display unit 151 and touch pad as a layer superposed on one another to form touch screen time, display unit 151 can serve as input equipment and output device. Display unit 151 can include at least one in liquid crystal display (LCD), thin film transistor (TFT) LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc. Some in these display may be constructed such that transparence is to allow user to watch from outside, and this is properly termed as transparent display, and typical transparent display can be such as TOLED (transparent organic light emitting diode) display etc. According to the specific embodiment wanted, mobile terminal 100 can include two or more display units (or other display device), such as, mobile terminal can include outernal display unit (not shown) and inner display unit (not shown). Touch screen can be used for detecting touch input pressure and touch input position and touch input area.

Dio Output Modules 152 can mobile terminal be in call signal receive under the isotype such as pattern, call mode, logging mode, speech recognition mode, broadcast reception mode time, that wireless communication unit 110 is received or storage in memorizer 160 voice data transducing audio signal and be output as sound. And, dio Output Modules 152 can provide the audio frequency output (such as, call signal receive sound, message sink sound etc.) relevant to the specific function of mobile terminal 100 execution. Dio Output Modules 152 can include speaker, buzzer etc.

Memorizer 160 can store the process performed by controller 180 and the software program controlling operation etc., or can temporarily store the data (such as, telephone directory, message, still image, video etc.) that oneself maybe will export through output. And, memorizer 160 can store the vibration about the various modes exported when touching and being applied to touch screen and the data of audio signal.

Memorizer 160 can include the storage medium of at least one type, described storage medium includes flash memory, hard disk, multimedia card, card-type memorizer (such as, SD or DX memorizer etc.), random access storage device (RAM), static random-access memory (SRAM), read only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, CD etc.And, mobile terminal 100 can be connected the network storage device cooperation of the storage function performing memorizer 160 with by network.

Power subsystem 190 receives external power or internal power under the control of controller 180 and provides the suitable electric power operated needed for each element and assembly.

Various embodiment described herein can to use such as computer software, hardware or its any combination of computer-readable medium to implement. Hardware is implemented, embodiment described herein can pass through to use application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, at least one that is designed to perform in the electronic unit of function described herein to implement, in some cases, such embodiment can be implemented in controller 180. Implementing for software, the embodiment of such as process or function can be implemented with allowing the independent software module performing at least one function or operation. Software code can be implemented by the software application (or program) write with any suitable programming language, and software code can be stored in memorizer 160 and be performed by controller 180.

So far, oneself is through describing mobile terminal according to its function. Below, for the sake of brevity, by the slide type mobile terminal in the various types of mobile terminals describing such as folded form, board-type, oscillating-type, slide type mobile terminal etc. exemplarily. Therefore, the present invention can be applied to any kind of mobile terminal, and is not limited to slide type mobile terminal.

Mobile terminal 100 as shown in Figure 1 may be constructed such that utilization operates via such as wired and wireless communication system and the satellite-based communication system of frame or packet transmission data.

The communication system being wherein operable to according to the mobile terminal of the present invention is described referring now to Fig. 2.

Such communication system can use different air interfaces and/or physical layer. Such as, the air interface used by communication system includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and UMTS (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc. As non-limiting example, as explained below relates to cdma communication system, but such instruction is equally applicable to other type of system.

With reference to Fig. 2, cdma wireless communication system can include multiple mobile terminal 100, multiple base station (BS) 270, base station controller (BSC) 275 and mobile switching centre (MSC) 280. MSC280 is configured to form interface with Public Switched Telephony Network (PSTN) 290. MSC280 is also structured to and the BSC275 formation interface that can be couple to base station 270 via back haul link. Back haul link can construct according to any one in some interfaces that oneself knows, described interface includes such as E1/T1, ATM, IP, PPP, frame relay, HDSL, ADSL or xDSL. It will be appreciated that system as shown in Figure 2 can include multiple BSC2750.

Each BS270 can service one or more subregion (or region), by each subregion of multidirectional antenna or the antenna covering pointing to specific direction radially away from BS270. Or, each subregion can be covered by two or more antennas for diversity reception. Each BS270 may be constructed such that support multiple frequencies distribution, and the distribution of each frequency has specific frequency spectrum (such as, 1.25MHz, 5MHz etc.).

Intersecting that subregion and frequency are distributed can be referred to as CDMA Channel. BS270 can also be referred to as base station transceiver subsystem (BTS) or other equivalent terms. In this case, term " base station " may be used for broadly representing single BSC275 and at least one BS270. Base station can also be referred to as " cellular station ". Or, each subregion of specific BS270 can be referred to as multiple cellular station.

As shown in Figure 2, broadcast singal is sent in system the mobile terminal 100 of operation by broadcsting transmitter (BT) 295. Broadcast reception module 111 as shown in Figure 1 is arranged on mobile terminal 100 and sentences the broadcast singal that reception is sent by BT295. In fig. 2 it is shown that several global positioning systems (GPS) satellite 300. Satellite 300 helps to position at least one in multiple mobile terminals 100.

In fig. 2, depict multiple satellite 300, it is understood that be, it is possible to use any number of satellite obtains useful location information. GPS module 115 as shown in Figure 1 is generally configured to coordinate the location information wanted with acquisition with satellite 300. Substitute GPS tracking technique or outside GPS tracking technique, it is possible to use other technology of the position of mobile terminal can be followed the tracks of. It addition, at least one gps satellite 300 can optionally or additionally process satellite dmb transmission.

As a typical operation of wireless communication system, BS270 receives the reverse link signal from various mobile terminals 100. Mobile terminal 100 generally participates in call, information receiving and transmitting communicates with other type of. Each reverse link signal that certain base station 270 receives is processed in specific BS270. The data obtained are forwarded to relevant BSC275. BSC provides call resource distribution and the mobile management function of the coordination of soft switching process included between BS270. The data received also are routed to MSC280 by BSC275, and it provides the extra route service for forming interface with PSTN290. Similarly, PSTN290 and MSC280 forms interface, and MSC and BSC275 forms interface, and BSC275 correspondingly controls BS270 so that forward link signals to be sent to mobile terminal 100.

Based on above-mentioned mobile terminal hardware configuration and communication system, it is proposed to each embodiment of the inventive method.

Refer to Fig. 3, it is for searching the method flow diagram of the first embodiment of the method for net under a kind of roaming state of offer in the specific embodiment of the invention, as it can be seen, the method includes:

Step S101: obtain the current location of mobile terminal.

After mobile terminal 100 start powers on, power subsystem 190 is powered to each power consuming units of mobile terminal 100; Mainly for the mobile communication of mobile terminal 100 and positioning function in this programme, overall function is realized by 180 United Dispatchings. In this programme, acquiescence is registered to PLMN (can be HPLMN, it is also possible to be VPLMN) already by the mobile communication module 112 in wireless communication unit 110.

The position judgment of mobile terminal has various ways, and common carries out satellite fix by special positional information module 115, specifically such as GPS and BEI-DOU position system; Also by network positions, network positions positions mainly through base station and WiFi. The height correlation that communicates of architecture and mobile communication module 112 with base station, the mutual height correlation of information of WiFi location and wireless Internet module 113 and positioning service business. But positioning result really causes the connection of PLMN to be likely to when changing when architecture is disabled just, realize so being mainly based upon WiFi location by network positions in this programme.

It is currently able to provide the WiFi You Duojia service provider of location, mainly each mapping service provider. Because WiFi accesses network firstly the need of by WiFi in location, so WiFi location obtains current location and needs good WiFi environment just can have reasonable locating effect.

Generally speaking, GPS location can provide stable positioning service, less by environmental constraints, by the implementation that GPS location is best, the present embodiment and follow-up embodiment are based on GPS be described, other location mode to implement process identical, only exist the difference in location mode and positioning precision, and not high for the requirement of positioning precision in this programme.

Current location can be that latitude and longitude coordinates information describes, it is also possible to be the country determined by latitude and longitude coordinates information or area describes. Generally speaking, PLMN is using country as service area, directly current location can be described by country at this, determining that country is the basic fundamental in location technology according to latitude and longitude coordinates information, the mapping process at this not pair warp and weft degree coordinate information elaborates.

Step S102: judge whether current location is ownership place public land mobile network HPLMN belonging positions.

Each SIM has the HPLMN of correspondence, has the highest access authority in HPLMN belonging positions, namely enters roaming state after leaving HPLMN belonging positions.

After obtaining current location, namely compare with HPLMN belonging positions, if two positions are not mated, then illustrate to enter roaming state. Such as HPLMN belonging positions is China's Mainland, and current location is Hong Kong, then current location is not belonging to HPLMN belonging positions, it is impossible to communicate either directly through HPLMN, carries out roaming communication only by VPLMN. Or HPLMN belonging positions is Beijing, current location is Tibet, can not communicate either directly through HPLMN equally, carries out roaming communication only by VPLMN.

In concrete judgement scene, the SIM that a mobile terminal is placed is likely to have multiple. If multiple SIMs, the position belonging to the HPLMN of its correspondence is likely to difference, thus can there is current location and be not likely to be HPLMN belonging positions relative to SIM 1, but be HPLMN belonging positions relative to SIM 2. In this case, still think that current location is HPLMN belonging positions, as long as namely mobile terminal can guarantee that the access realizing HPLMN in current locale. Two SIMs realize different HPLMN cards and access in two different areas, although the change in location occurred between the different area of the two can cause the change of HPLMN, but ensure that and access HPLMN all the time. Only current location just can be judged as it not being position described in HPLM by the 3rd area outside entrance the two area, it is necessary to web search mode is adjusted.

Step S103: if current location is not HPLMN belonging positions, stop search HPLMN.

In the prior art, HPLMN has the highest access authority, attempt accessing HPLMN so setting mobile terminal period, and the radio frequency resource of mobile terminal is limited, radio frequency resource is when attempting accessing HPLMN, can provide the VPLMN of communication service cannot normal operation, and it is at a relatively high for attempting power consumption in the process of access network, which results in mobile terminal to attempt accessing the HPLMN that cannot connect at waste energy, also affect the normal use of VPLMN simultaneously, cause that the called call completion ratio of mobile terminal and the stability of data service reduce.

The present embodiment employed technical scheme comprise that when not being HPLMN belonging positions in current location, directly stop search HPLM, namely suspend the highest weight limit of HPLMN, since HPLMN certainly cannot be accessed, that just accesses in VPLMN all the time, first it is a cancellation unnecessary power consumption when attempting accessing HPLMN, next to that ensure that the stability of communications status, does not miss incoming call call.

For improving access speed, it is possible to record is at each roaming area correspondence VPLMN, and correspondence is saved in memorizer 160, when the current location got is in a certain roaming area, the VPLMN directly reading correspondence from memorizer 160 carries out registering. When there is the registration change of PLMN, it is possible to pointed out by output unit 150, for instance carry out word prompting by display unit 151, or carry out sound prompting by dio Output Modules 152. Under extreme case, abnormal in the access of roaming area VPLMN, for instance unordered switching between multiple VPLMN, not access the VPLMN that signal is the strongest, it is possible to be manually selected the VPLMN of registration by user input unit 130, keep the stability of mobile communication.

In sum, by obtaining the current location of mobile terminal, judge whether mobile terminal is in HPLMN belonging positions, when current location is not at HPLMN belonging positions, what stop HPLMN searches net, reduce the ineffective occupation of radio frequency resource, and then avoid searching the power consumption that net causes and increase and the reduction of communication stability.

Refer to Fig. 4 A, it is for searching the method flow diagram of the second embodiment of the method for net under a kind of roaming state of offer in the specific embodiment of the invention, as it can be seen, the method includes:

Step S201: obtain the current location of mobile terminal.

Step S202: judge whether current location is ownership place public land mobile network HPLMN belonging positions.

Step S203: if current location is not HPLMN belonging positions, is set to hplmn_flag false, and sends the value of statistical indicant of hplmn_flag to modem protocol stack NAS layer by send () interface function.

Step S204: judge current location is relative to whether the front result once obtained changes.

The position at mobile terminal place is except from HPLMN belonging positions to the change of non-HPLMN belonging positions, still further comprising from non-HPLMN belonging positions to the change of non-HPLMN belonging positions. Such as HPLMN belonging positions is China's Mainland, and then mobile terminal moves to Taiwan from Hong Kong, and now corresponding VPLMN also to change.

Step S205: if changing, searches for the public land mobile network PLMN corresponding with current location.

In the change procedure of mobile terminal, it is however generally that, the change of the current location of mobile terminal all can cause the change of the PLMN of its registration, such change can be summarized as three kinds, the first is that the second is from HPLMN to VPLMN from VPLMN to HPLMN, and the third is from VPLMN to VPLMN; Three kinds of changes can carry out based on the situation of change of current location.

Step S206: if current location becomes HPLMN belonging positions from non-HPLMN position, hplmn_flag is set to true, then passes through send () interface function, sends modem protocol stack NAS layer to by this value of statistical indicant.

Step S206 and step S204 can implement the first two change described in step S205. Process contrast elaboration is realized in conjunction with of the prior art.

Refer to Fig. 4 B, it is that in prior art, HPLMN searches network process schematic diagram, and modem protocol stack is the summation of each layer protocol in network, reflects the process of a network file transmission: by upper-layer protocol to underlying protocol, then by underlying protocol to upper-layer protocol.In prior art, there is no and contact between GPS and modem protocol stack, modem protocol stack can define an intervalometer, and the time of intervalometer may be configured as between 6min��6h, and the time of setting need to be the integral multiple of 6min. When the timer times out, protocol stack NAS layer will issue the request searching net to rrc layer, and HPLMN_id can be enclosed simultaneously, inform the network of rrc layer this HPLMN_id of removal search, rrc layer reinforms physical layer (PHY), physical layer calls radio frequency resource (RF), searches for the network of this HPLMN_id.

And in the present embodiment, HPLMN searches network process and illustrates as shown in Figure 4 C, after mobile terminal arrives roaming place, GPS can position mobile terminal location, namely current location. Such as: mobile terminal moves from Shenzhen to Hong Kong, GPS detects terminal and arrives Hong Kong, hplmn_flag will be set to false, and send this value of statistical indicant to modem protocol stack NAS layer by send () interface function, NAS layer judges that this value of statistical indicant is after false, will not issue to rrc layer and search net instruction. If user returns to SIM ownership place from roaming place, GPS module can navigate to user location, detect after user returns to ownership place, hplmn_flag is set to true, then pass through send () interface function, this value of statistical indicant is sent to modem protocol stack NAS layer, NAS layer receives hplmn_flag and decision content is after true, NAS layer issues the order of search HPLMN network to rrc layer and sends hplmn_id to rrc layer, rrc layer reinforms physical layer, physical layer calls radio frequency resource, searches for the network of this HPLMN_id. If user is always in roaming place, then terminal is registered on VPLMN network always, it is false due to hplmn_flag always, NAS can not issue the order of search HPLMN network always, such terminal just eliminates the action of frequent removal search HPLMN, owing to can take radio frequency resource when searching net always, some pagings of monitoring so likely can be missed, it is possible to influence whether the stability of called call completion ratio and data service. Terminal is in searches net state, relative to putting out screen idle condition, can expend more power consumption.

For the third change described in step S205, it is also possible to first search has the PLMN of higher priority. Such as in certain state-owned multiple operator, wherein there is two or more operators to sign roaming agreement with Domestic Carriers and priority is different, so the user of Domestic Carriers is after entering certain state, and meeting first search has the operator providing roaming service of higher priority.

Finally needing explanation, the method searching net under the roaming state in this programme is not the sole mode that mobile terminal searches net, but preferred mode. It practice, not location, still can be by existing techniques in realizing and search net and complete network registry. Such as, the HPLMN of certain user is provided by the operator of China's Mainland, when the mobile terminal using this method user to carry returns to China's Mainland from Hong Kong, if it can not realize location, so when it enters China's Mainland, the VPLMN in Hong Kong of its original registration can not continue to access, and cannot be linked into HPLMN based on location determination again simultaneously; But for mobile terminal, HPLMN is the network with limit priority, when connection of mobile terminal into network failure, HPLMN can be automatically attempted to access, it is to say, behind this mobile terminal entrance China's Mainland, although there is no the current location switching reference as PLMN, but it can automatically access the HPLMN with limit priority because of the unusable of original VPLMN, and then handover network is kept in communication unimpeded.

In sum, by obtaining the current location of mobile terminal, judge whether mobile terminal is in HPLMN belonging positions, when current location is not at HPLMN belonging positions, what stop HPLMN searches net, reduce the ineffective occupation of radio frequency resource, and then avoid searching the power consumption that net causes and increase and the reduction of communication stability. The judged result of the current location realized further produces the process of impact to modem protocol stack, and the actual switching being specific to PLMN describes scheme, and the transmission of data and change procedure are simple, improve the efficiency of response.

Further providing for searching under a kind of roaming state the device of net in the specific embodiment of the invention, device realizes based on aforesaid exhibition method, and description not most in a device refer to aforesaid method.

Refer to Fig. 5, it is for searching the block diagram of the first embodiment of the device of net under a kind of roaming state of offer in the specific embodiment of the invention, as it can be seen, this exhibiting device includes:

Position acquisition unit 10, for obtaining the current location of mobile terminal;

Position judgment unit 20, is used for judging whether current location is ownership place public land mobile network HPLMN belonging positions;

Searching net stop element 30, if not being HPLMN belonging positions for current location, stop search HPLMN.

In sum, the collaborative operating of above-mentioned each unit, by obtaining the current location of mobile terminal, judge whether mobile terminal is in HPLMN belonging positions, when current location is not at HPLMN belonging positions, what stop HPLMN searches net, reduces the ineffective occupation of radio frequency resource, and then avoids searching the power consumption that net causes and increase and the reduction of communication stability.

Refer to Fig. 6, it is for searching the block diagram of the second embodiment of the device of net under a kind of roaming state of offer in the specific embodiment of the invention, as it can be seen, this device includes:

Position acquisition unit 10, for obtaining the current location of mobile terminal;

Position judgment unit 20, is used for judging whether current location is ownership place public land mobile network HPLMN belonging positions;

Searching net stop element 30, if not being HPLMN belonging positions for current location, stop search HPLMN.

Wherein, described device, also include:

Change judging unit 40, for judging current location is relative to whether the front result once obtained changes;

Again searching net unit 50, if changing relative to the front result once obtained for current location, searching for the public land mobile network PLMN corresponding with current location.

Wherein, search net stop element 30, specifically for:

If current location is not HPLMN belonging positions, hplmn_flag is set to false, and sends the value of statistical indicant of hplmn_flag to modem protocol stack NAS layer by send () interface function.

Wherein, described device, also include:

Search network recovery unit 60, if becoming HPLMN belonging positions for current location from non-HPLMN position, hplmn_flag being set to true, then passes through send () interface function, this value of statistical indicant is sent to modem protocol stack NAS layer.

Wherein, current location is obtained by GPS or network positions.

In sum, the collaborative operating of above-mentioned each unit, by obtaining the current location of mobile terminal, judge whether mobile terminal is in HPLMN belonging positions, when current location is not at HPLMN belonging positions, what stop HPLMN searches net, reduces the ineffective occupation of radio frequency resource, and then avoids searching the power consumption that net causes and increase and the reduction of communication stability.The judged result of the current location realized further produces the process of impact to modem protocol stack, and the actual switching being specific to PLMN describes scheme, and the transmission of data and change procedure are simple, improve the efficiency of response.

It should be noted that, in this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or device not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or device. When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of this key element, method, article or device.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

Through the above description of the embodiments, those skilled in the art is it can be understood that can add the mode of required general hardware platform by software to above-described embodiment method and realize, hardware can certainly be passed through, but in a lot of situation, the former is embodiment more preferably. Based on such understanding, the part that prior art is contributed by technical scheme substantially in other words can embody with the form of software product, this computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions with so that a station terminal equipment (can be mobile phone, computer, server, air-conditioner, or the network equipment etc.) perform the method described in each embodiment of the present invention.

For illustrative purposes, description above employs specific term, to provide thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that be not required to concrete details to put into practice the present invention. The described above of specific embodiments of the invention is to present for purposes of illustration and description. They are not intended to detailed or limit the invention to disclosed precise forms. In view of religious doctrine above, many modifications and variations are possible. These embodiments are illustrate and described, so that others skilled in the art can utilize the present invention best and have the various embodiments of the various amendments being suitable to intended specific use in order to explain principles of the invention and practical application thereof best. It is intended to the scope of the present invention limited by following claims and its equivalent.

Claims (10)

1. search the device of net under a roaming state, it is characterised in that including:
Position acquisition unit, for obtaining the current location of mobile terminal;
Position judgment unit, is used for judging whether described current location is ownership place public land mobile network HPLMN belonging positions;
Searching net stop element, if not being HPLMN belonging positions for described current location, stop search HPLMN.
2. device according to claim 1, it is characterised in that described device, also includes:
Change judging unit, for judging described current location is relative to whether the front result once obtained changes;
Again searching net unit, if changing relative to the front result once obtained for described current location, searching for the public land mobile network PLMN corresponding with described current location.
3. device according to claim 1, it is characterised in that described in search net stop element, specifically for:
If described current location is not HPLMN belonging positions, hplmn_flag is set to false, and sends the value of statistical indicant of hplmn_flag to modem protocol stack NAS layer by send () interface function.
4. device according to claim 3, it is characterised in that described device, also includes:
Search network recovery unit, if becoming HPLMN belonging positions for described current location from non-HPLMN belonging positions, hplmn_flag being set to true, then passes through send () interface function, this value of statistical indicant is sent to modem protocol stack NAS layer.
5. the device according to any one of Claims 1 to 4, it is characterised in that described current location is obtained by GPS or network positions;
Described HPLMN includes the HPLM that in described mobile terminal, multiple SIMs are corresponding.
6. the method searching net under a roaming state, it is characterised in that including:
Obtain the current location of mobile terminal;
Judge whether described current location is ownership place public land mobile network HPLMN belonging positions;
If described current location is not HPLMN belonging positions, stop search HPLMN.
7. method according to claim 6, it is characterised in that described method, also includes:
Judge described current location is relative to whether the front result once obtained changes;
If changing, search for the public land mobile network PLMN corresponding with described current location.
8. method according to claim 6, it is characterised in that if described current location is not HPLMN belonging positions, stop search HPLMN, particularly as follows:
If described current location is not HPLMN belonging positions, hplmn_flag is set to false, and sends the value of statistical indicant of hplmn_flag to modem protocol stack NAS layer by send () interface function.
9. method according to claim 8, it is characterised in that described method also includes:
If described current location becomes HPLMN belonging positions from non-HPLMN belonging positions, hplmn_flag is set to true, then passes through send () interface function, this value of statistical indicant is sent to modem protocol stack NAS layer.
10. the method according to any one of claim 6��9, it is characterised in that described current location is obtained by GPS or network positions;
Described HPLMN includes the HPLM that in described mobile terminal, multiple SIMs are corresponding.
CN201610058110.2A 2016-01-28 2016-01-28 Device and method for network search in roaming state CN105657789A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018018770A1 (en) * 2016-07-26 2018-02-01 中兴通讯股份有限公司 Method and terminal apparatus for scheduling of multiple service provider subscription networks, and storage medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101299870A (en) * 2007-04-30 2008-11-05 华为技术有限公司 Control method, system and apparatus for accessing private base station
US20100035608A1 (en) * 2008-08-11 2010-02-11 Huawei Technologies Co., Ltd. Method and device for generating subscriber information
EP1748596B1 (en) * 2004-04-30 2012-04-11 Huawei Technologies Co., Ltd. A method and system for charging in roaming
CN103298074A (en) * 2013-05-21 2013-09-11 华为终端有限公司 Network terminal equipment and network switching method for same
CN104662967A (en) * 2012-09-13 2015-05-27 高通股份有限公司 Apparatus and method for limiting searches for a home PLMN according to its proximity
WO2015118329A1 (en) * 2014-02-06 2015-08-13 British Telecommunications Public Limited Company Method and apparatus for determining a network search parameter in a mobile communications network

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748596B1 (en) * 2004-04-30 2012-04-11 Huawei Technologies Co., Ltd. A method and system for charging in roaming
CN101299870A (en) * 2007-04-30 2008-11-05 华为技术有限公司 Control method, system and apparatus for accessing private base station
US20100035608A1 (en) * 2008-08-11 2010-02-11 Huawei Technologies Co., Ltd. Method and device for generating subscriber information
CN104662967A (en) * 2012-09-13 2015-05-27 高通股份有限公司 Apparatus and method for limiting searches for a home PLMN according to its proximity
CN103298074A (en) * 2013-05-21 2013-09-11 华为终端有限公司 Network terminal equipment and network switching method for same
WO2015118329A1 (en) * 2014-02-06 2015-08-13 British Telecommunications Public Limited Company Method and apparatus for determining a network search parameter in a mobile communications network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018018770A1 (en) * 2016-07-26 2018-02-01 中兴通讯股份有限公司 Method and terminal apparatus for scheduling of multiple service provider subscription networks, and storage medium

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