WO2017190349A1 - 一种搜网方法以及终端设备 - Google Patents

一种搜网方法以及终端设备 Download PDF

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Publication number
WO2017190349A1
WO2017190349A1 PCT/CN2016/081290 CN2016081290W WO2017190349A1 WO 2017190349 A1 WO2017190349 A1 WO 2017190349A1 CN 2016081290 W CN2016081290 W CN 2016081290W WO 2017190349 A1 WO2017190349 A1 WO 2017190349A1
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WO
WIPO (PCT)
Prior art keywords
cell
terminal device
network
mcc
search
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Application number
PCT/CN2016/081290
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English (en)
French (fr)
Inventor
尤秀
黃正聖
许浩维
張義芳
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020187034761A priority Critical patent/KR102144298B1/ko
Priority to US16/099,407 priority patent/US10701612B2/en
Priority to PCT/CN2016/081290 priority patent/WO2017190349A1/zh
Priority to CN201680025160.9A priority patent/CN107592980B/zh
Priority to JP2018558205A priority patent/JP6707268B2/ja
Priority to EP16900871.1A priority patent/EP3442275B1/en
Publication of WO2017190349A1 publication Critical patent/WO2017190349A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Definitions

  • the present application relates to the field of mobile communications, and in particular, to a network searching method and a terminal device.
  • Public Land Mobile Network (English name: Public Land Mobile Network, PLMN for short), a network for mobile communication services provided by the government for operators.
  • PLMN Public Land Mobile Network
  • HPLMN Home PLMN
  • VPLMN Visited PLMN
  • the terminal equipment must operate on the equivalent public land mobile network defined in the HPLMN or Customer Identification Module (English name: Subscriber Identity Module: SIM) card.
  • Equivalent HPLMN (EHPLMN) network when the terminal device leaves the coverage of HPLMN or EHPLMN, it can choose to reside in VPLMN.
  • the terminal device In order to prevent the terminal device from staying on the VPLMN for a long time, according to the provisions of 3GPP TS 23.122, the terminal device only has two chances to return from the VPLMN network to the HPLMN network, which is the VPLMN drop-off and the high-priority PLMN search timer (High).
  • Priority PLMN search timer Timeout, the high priority PLMN search timer is present in the high priority PLMN search period EF-HPPLMN field of the SIM card. That is, when the terminal device drops from the VPLMN, performs a general search, or the high priority PLMN search timer exceeds a preset value, a high priority PLMN search is performed.
  • the high-priority PLMN search timer is specified in the 3rd Generation Partnership Project (English name: 3rd Generation Partnership Project, 3GPP) TS 23.122.
  • the duration of the high priority PLMN search timer is set in the high priority PLMN search period EF-HPPLMN field of the SIM card.
  • the high priority PLMN search timer is in units of 6 minutes and has a length of 6 minutes to 8 hours. The specific duration is related to the value of the EF-HPPLMN field.
  • the description is The high priority PLMN search timer is not set.
  • the time duration of the high priority PLMN search timer is 6 minutes.
  • the field value is 2, the height is indicated.
  • the priority time of the priority PLMN search timer is 12 minutes, and so on. If the EF-HPPLMN field in the SIM card has no value, the high priority PLMN search timer is set to 60 minutes by default. That is, the timing of the high priority PLMN search timer is a minimum of 6 minutes.
  • the terminal device is likely to reside on the VPLMN network for a long time, that is, the speed at which the terminal device resides from the VPLMN network back to the HPLMN network. slow.
  • the embodiment of the present application provides a network searching method and a terminal device, which can effectively avoid the problem of staying on the VPLMN network for a long time, that is, speed up the terminal device residing from the VPLMN network to the HPLMN network.
  • the network searching method is applied to the terminal device, and the terminal device is installed with a SIM card.
  • the terminal device resides in the public land mobile network VPLMN, the mobile device country code MCC attribution area corresponding to the SIM card is determined; determining whether the terminal device has Entering the MCC home zone or entering the MCC home zone; if the terminal device has entered the MCC home zone or is about to enter the MCC home zone, the network search is triggered.
  • the network search is triggered.
  • the terminal device determines that the MCC belongs to the area, that is, the area where the MCC is located, That is, the network search is triggered.
  • the terminal device can camp back from the VPLMN network immediately after triggering the search.
  • the HPLMN network can solve the problem that the terminal device can effectively avoid staying on the VPLMN network for a long time, and improve the speed at which the terminal device resides from the VPLMN network to the HPLMN network.
  • determining whether the terminal device enters the MCC home zone specifically includes:
  • the number of the first cell is determined, and the ratio of the second cell to the first cell is determined.
  • the first cell is a cell that can be searched by the terminal device, and the second cell is a cell in which the MCC in the first cell is the same as the MCC corresponding to the SIM card.
  • the terminal is determined to enter the MCC home zone, where the preset ratio value is not equal to zero.
  • a method for determining whether the terminal device determines whether to enter the MCC home zone is given, and the implementability of the solution is increased.
  • the terminal device may determine the first timing duration according to the ratio of the second cell to the first cell, and set the first timing duration to the timing duration of the target timer, and enter the MCC from the determining terminal device.
  • the home zone starts timing; when the timing of the target timer times out for the first time duration, a network search is triggered.
  • the determining, by the terminal device, the first timing duration according to the ratio of the second cell to the first cell may be determined by the foregoing manner:
  • P is the ratio of the second cell to the first cell
  • P' is a preset ratio
  • the time for triggering the network search by the terminal device can be adjusted by using the foregoing calculation formula, so that the problem that the terminal device resides in the VPLMN network for a long time can be effectively avoided, and the station from the VPLMN network is improved. The speed of staying back to the HPLMN network.
  • the second timing duration is determined according to the ratio of the second cell to the first cell, and the second timing duration is determined.
  • the determining, by the terminal device, the second timing duration according to the ratio of the second cell to the first cell may be determined by:
  • T is the length of time corresponding to the value of the high priority PLMN search period EF-HPPLMN field of the SIM card.
  • the terminal device may also trigger a network search according to the P value, and dynamically adjust the time for triggering the network search according to the P value, which can effectively reduce the action of the terminal device frequently searching. This can effectively avoid the problem that the terminal device resides in the VPLMN network for a long time, and improve the speed of residing from the VPLMN network to the HPLMN network.
  • determining whether the terminal device enters the MCC home zone or is about to enter the MCC home network may also be as follows:
  • GPS Global Positioning System
  • the terminal device determines whether the terminal device enters the MCC home zone or is about to enter the MCC home zone.
  • the manner of determining whether the terminal device enters the MCC home zone or is about to enter the MCC home zone is provided, and the diversity of the scheme is increased.
  • determining whether the terminal device is about to enter the MCC home zone includes:
  • the terminal device is about to enter the MCC home zone.
  • the triggering network search described above specifically performs a network search by triggering a high priority PLMN search.
  • the partial system network may include at least one of the following networks:
  • GSM Global System for Mobile Communication
  • Wideband Code Division Multiple Access (English name: Wideband Code Division Multiple Access, English Abbreviation: WCDMA) network;
  • LTE Long-term evolution
  • the terminal device After the terminal device triggers the high-priority PLMN search, it can search only the network of the partial network standard, for example, the GSM network with a relatively wide coverage rate, etc., while improving the speed at which the terminal device resids from the VPLMN network to the HPLMN network, The power consumption of the terminal device is further reduced.
  • the partial network standard for example, the GSM network with a relatively wide coverage rate, etc.
  • the embodiment of the present application provides a terminal device, where the terminal device has a function of implementing the behavior of the terminal device in the method design of the first aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the terminal device comprises:
  • a reading module configured to determine an MCC attribution area corresponding to the SIM card when the terminal device resides in the VPLMN;
  • a processing module configured to determine whether the terminal device has entered the MCC home zone or is about to enter the MCC home zone, if the processing module determines that the terminal device has entered the MCC home zone or is about to enter the MCC
  • the attribution area triggers the search module to perform a network search
  • the search module is configured to perform a network search according to the trigger of the processing module.
  • the terminal device includes a radio frequency module, an antenna, a bus, a memory, and a processor, and the radio frequency module, the processor, and the memory are connected by a bus; the processor is used in the method flow in the first aspect.
  • an embodiment of the present application provides a computer storage medium, where the program storage code is stored in the computer storage medium, and the program code is used to indicate that the method of the first aspect or the second aspect is performed.
  • the MCC home zone corresponding to the SIM card can be determined, and then the terminal device has entered the MCC home zone or is about to enter the MCC home zone. If the terminal device has entered the MCC home zone or is about to enter the MCC home zone, a network search is triggered. It should be understood that when the terminal device determines to enter the MCC home zone or is about to enter the MCC home zone, the network search is triggered at this time.
  • the terminal device when the terminal device is under the coverage of the HPLMN, the terminal device can effectively avoid the long Time
  • the problem of residing on the VPLMN speeds up the speed at which the terminal device resides from the VPLMN network back to the HPLMN network.
  • FIG. 1 is a schematic diagram of a scenario of cell coverage around a geographic boundary
  • FIG. 2 is a schematic flowchart of an embodiment of a network searching method according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a method for determining whether a terminal device enters an MCC home zone according to step 202 of FIG. 2;
  • FIG. 4 is a schematic diagram of a coverage scenario of a cell in a VPLMN border area
  • FIG. 5 is a schematic flow chart of a method for determining whether a terminal device is about to enter an MCC home zone for step 202 of FIG. 2;
  • FIG. 6 is a schematic diagram of another scenario of cell coverage around a geographic boundary
  • FIG. 7 is another schematic diagram of a coverage area of a cell around a geographic boundary
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another structure of a terminal device according to an embodiment of the present application.
  • the embodiment of the present application provides a network searching method and a terminal device.
  • the method is applied to a terminal device, where the terminal device is installed with a SIM card of a customer identification module.
  • the terminal device resides in the VPLMN network
  • the MCC corresponding to the SIM card is determined.
  • the home zone triggers a network search when it is determined that the terminal device has entered the MCC home zone or is about to enter the MCC home zone.
  • the problem that the terminal device resides on the VPLMN network for a long time can be effectively avoided, and the speed at which the terminal device resides from the VPLMN network to the HPLMN network is accelerated.
  • the technical solution of the embodiment of the present application can be applied to various communication systems of a wireless cellular network, for example, a GSM system, a code division multiple access (English name: CDMA) system, and a wideband code division multiple access.
  • System general packet radio service (English full name: General Packet Radio Service, English abbreviation: GPRS) system, LTE system, universal mobile communication system (English full name: Universal Mobile Telecommunications System, English abbreviation: UMTS), future 5G communication system, etc.
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • future 5G communication system etc. This application is not limited in this regard.
  • the terminal device involved in the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the terminal device can communicate with one or more core networks via a radio access network (English name: Radio Access Network, English abbreviation: RAN), and the terminal device can be a mobile terminal, such as a mobile phone (or "cellular" phone).
  • a computer having a mobile terminal for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • personal communication service English name: Personal Communication Service, English abbreviation: PCS
  • cordless telephone session initiation protocol telephone
  • wireless local loop English full name: Wireless Local Loop, English abbreviation: WLL
  • personal digital assistant English full name: Personal Digital Assistant, English abbreviation: PDA
  • Terminal equipment can also be called user equipment (English full name: User Equipment, English abbreviation; UE), mobile station (English full name: Mobile Station, English abbreviation: MS), remote station (English full name: Remote Station, English abbreviation: RS) Remote terminal (English name: Remote Terminal, English abbreviation: RT), access terminal (English abbreviation: Access Terminal, English abbreviation: AT), etc., this application does not limit this.
  • the international mobile subscriber identity (English full name: IMSI) is the number assigned internationally to uniquely identify a mobile subscriber.
  • the IMSI has 15 digits, which are composed of MCC, mobile device network code (English full name: Mobile Network Code, English abbreviation: MNC) and mobile subscriber identification code (English full name: Mobile Subscriber Identification Number, English abbreviation: MSIN).
  • MCC mobile device network code
  • MNC Mobile Network Code
  • MSIN Mobile Subscriber Identification Number
  • the resources of the MCC are uniformly allocated and managed by the ITU (English full name: International Telecommunication Union, English abbreviation: ITU), which is used to uniquely identify the country to which the mobile user belongs, for a total of three.
  • ITU International Telecommunication Union, English abbreviation: ITU
  • the MCC home zone described in the example refers to a region or a country zone corresponding to the SIM card MCC installed on the terminal device, and the MCC home zone includes a plurality of HPLMN cells.
  • the terminal device when the terminal device resides in the low priority PLMN, the terminal device needs to periodically perform the network search according to the time interval of the SIM card EFHPPLMN specification, that is, the duration of the high priority PLMN search timer, that is, the high priority PLMN. Searching generally performs network searches in a certain priority order, which is determined according to the specific implementation, but generally the HPLMN network is a higher priority search.
  • the search is performed according to the following priority order: HPLMN>EHPLMN>User Controlled PLMN (English Full Name: User Controlled PLMN, English abbreviation: OPLMN)/Operator Control PLMN (English full name: Operator Controlled PLMN, English abbreviation: UPLMN>VPLMN.
  • HPLMN>EHPLMN>User Controlled PLMN English Full Name: User Controlled PLMN, English abbreviation: OPLMN
  • OFDMN Operaator Control PLMN
  • UPLMN>VPLMN UPLMN>VPLMN.
  • the priority of searching for HPLMN networks is a higher priority network search.
  • the terminal device when the network where the terminal device is located is different from the HPLMN corresponding to the international mobile identification code of the SIM card installed on the terminal device, the terminal device is said to roam on the VPLMN network.
  • PLMNs between different operators of the same MCC will not sign roaming agreements with each other due to commercial competition. For example, Chinese mobile users cannot use China Unicom's network services, and Chinese mobile users will try to register for China Unicom's PLMN. To refuse.
  • the PLMNs of different MCCs in order to allow users to use the basic communication services when they leave the HPLMN coverage, they will sign a roaming agreement with each other. For example, if a Chinese mobile user subscribes to the US-Canada roaming service, the US carrier's mobile communication service can be used.
  • the VPLMN referred to in the embodiment of the present application refers to a VPLMN different from the terminal device.
  • FIG. 1 is a schematic diagram of a scene coverage of a cell around a geographic boundary.
  • the circle represents the coverage of a cell, where the circle A indicates the range covered by the HPLMN cell corresponding to the SIM card of the terminal device, and the circle B indicates the range covered by the cell of the VPLMN region.
  • Circle C represents the cell coverage of other operators.
  • the cell represented by the circle A is the same as the cell MCC represented by the circle B, and is different from the cell MCC represented by the circle C.
  • the terminal device 1 is at the geographic boundary line, and the HPLMN is in the MCC home zone. Under the coverage of the cell, under the coverage of the VPLMN cell, the terminal device 1 can obtain the mobile communication service provided by the HPLMN cell or the VPLMN regional cell under the coverage of the two.
  • the terminal device 2 is in the VPLMN region, but under the coverage of the HPLMN cell and the VPLMN cell, the terminal device 2 can obtain the mobile communication service provided by the HPLMN cell or the VPLMN regional cell.
  • the terminal device When the coverage of the HPLMN network at the geographic boundary line is not as good as that of the VPLMN network, as shown in FIG. 1, the terminal device is likely to be in the MCC home zone, but the terminal device often resides in the VPLMN network.
  • the network search is triggered whenever the terminal device determines that it has entered the MCC home zone or is about to enter the MCC home zone. As shown in FIG. 1 , when the terminal device is in the MCC home zone, it can be known from the network network that the terminal device is likely to be under the coverage of the HPLMN network. When the terminal device resides on the VPLMN network, the terminal device can trigger the network search, which can effectively avoid the problem of staying on the VPLMN network for a long time, that is, speeding up the terminal device residing from the VPLMN network to the HPLMN network. speed.
  • FIG. 2 is a schematic flowchart of an embodiment of a network searching method according to an embodiment of the present application, including:
  • the terminal device When the terminal device resides in the visited public land mobile network VPLMN, determine an MCC attribution area corresponding to the SIM card;
  • the MCC attribution area corresponding to the SIM card can be determined. It should be noted that the SIM cards described in the embodiments of the present application all refer to cards installed on the terminal device.
  • the IMSI is composed of MCC, MNC and mobile subscriber identification code (English full name: Mobile Subscriber Identification Number, MSIN) of the card issuing operator. Therefore, after the SIM card is installed and enabled in the terminal device, the MCC corresponding to the SIM card can be determined by using the IMSI information recorded in the SIM card, thereby determining the MCC attribution area corresponding to the SIM card.
  • the terminal device If it is determined that the terminal device enters the MCC home zone or is about to enter the MCC home zone, triggering a network search.
  • the terminal device determines whether it enters the MCC home zone, and may specifically have multiple manners. The following describes the specific embodiment:
  • FIG. 3 is a schematic flowchart of a method for determining whether a terminal device enters an MCC home zone according to step 202 of FIG. 2, for details, refer to FIG. 3:
  • the terminal device determines a quantity of the first cell.
  • the first cell refers to all cells that the terminal device can currently search for.
  • Example 1 it is assumed that the terminal device searches for 3 China Mobile Cells, 1 China Telecom Cell, and 3 foreign carrier cells, and the number of the first cells is 7.
  • the terminal device determines a ratio of the second cell to the first cell.
  • the second cell is a cell in which the MCC in the current cell is the same as the MCC corresponding to the SIM card.
  • the first cell is the sum of three Chinese mobile cells and one Chinese telecommunication cell, for a total of four.
  • the ratio of the second cell and all the cells found by the terminal device to the network is related to the distance between the terminal device and the geographical boundary line.
  • the number of the first cell and the second cell is recorded by the terminal device during the process of performing network search. That is, before the network search is triggered in step 202 of FIG. 2, the terminal device re-searches or performs the high-priority PLMN search process. It can be understood that the difference between the two is that there is no camping in the original cell, and the network re-searching refers to the search performed when it does not reside in any cell. When performing a high priority PLMN search, the terminal device also resides in the original cell. Residing refers to whether the terminal device can receive the paging on the network side.
  • the terminal device determines whether a ratio of the second cell to the first cell is greater than a preset ratio.
  • the terminal device determines that the ratio of the second cell to the first cell is greater than a preset ratio, it is determined that the MCC home zone has been entered.
  • the terminal device determines that the P value is greater than the preset ratio value P', it is determined that the terminal device enters the MCC Is a region.
  • the P' value should be set to 0.5; if the network density of the roaming network is higher than the local network, the P' value can be set less than 0.5. It should be noted that the value of the specific P' value may be configured according to an actual application scenario, which is not limited herein.
  • the terminal device when the calculated second cell number ratio P value is greater than P′, the terminal device is located in the MCC attribution region; if less than or equal to the P′ value, The terminal device is in the VPLMN area of the roaming area, that is, the other side of the MCC home area.
  • the terminal device When the terminal device is in the MCC home zone, it is generally in the network coverage of the carrier cell of the home country or the region.
  • the device enters the MCC home zone and is therefore likely to be already under the coverage of the HPLMN.
  • the network search may be triggered immediately, or the network search may be triggered after a preset time, for example, searching for the HPLMN network after 5 minutes.
  • the preset time can be set according to the actual application, and is not limited herein.
  • the first timing duration may be determined according to the P value, and the first timing duration is set to the timing duration of the target timer.
  • the terminal device triggers the network search. That is, it further defines when the terminal device triggers the network search time when determining to enter the MCC home network.
  • the first timing duration can be determined according to the P value in the following manner:
  • the terminal device can calculate the first timing duration T1 according to the following formula
  • T1 can be obtained by other calculation formulas or methods through the P value, which is not limited in this application.
  • the terminal device may determine a corresponding T1 value by using a preset mapping list, where the preset mapping list is pre-configured by the terminal device, and the preset mapping list stores a mapping relationship between the P value and the T1, that is, the P value corresponds to With the determined T1 value, the terminal device can pass the calculated P value.
  • the query preset mapping list determines the corresponding T1, and finally sets the timing duration of the target timer according to the T1 obtained by the query.
  • the terminal device When the terminal device resides on the VPLMN network, when the terminal device determines that it enters the MCC home zone, the terminal device can dynamically adjust the time for triggering the network search according to the location relationship with the MCC home zone, thereby effectively avoiding long-term resident.
  • the terminal device when the terminal device determines that the P value is less than or equal to P′, the terminal device may determine the second timing duration according to the P value, and set the second timing duration to the target timer. duration;
  • the terminal device may also set the duration of the target timer according to the P value.
  • the terminal device triggers the network search.
  • the second timing duration can be determined according to the P value in the following manner:
  • the terminal device calculates a second timing duration T2 according to the following formula
  • the T is a duration corresponding to a value of a high priority PLMN search period EF-HPPLMN field of the SIM card.
  • the preset ratio value P′ is assumed to be 0.5, and when the calculated P value is less than 0.5, those skilled in the art may know that the terminal device is located in the VPLMN region.
  • the terminal device is related to the distance of the geographic boundary line. The smaller the P value is, the less the cell that the terminal device can search for the MCC home zone is. If the P value calculated by the terminal device is less than 0.5, it is less than the preset ratio value P. Further, the terminal can determine the time of the search based on the specific P value. E.g:
  • the terminal device sets the duration of the target timer according to the second timing duration T2, and triggers the network search when the target timer times out. It should be understood that, in this range, although the terminal device is located in the VPLMN region, the terminal device is relatively close to the geographical boundary line. At this time, the terminal device sets the timing duration of the target timer according to T2, that is, shortens the time for triggering the search, and accelerates the terminal device from The speed at which the VPLMN network resides back to the HPLMN network.
  • the terminal device triggers the network search according to the existing protocol, that is, triggers the network according to the timing duration set by the duration corresponding to the value of the EF-HPPLMN field in the SIM card. search for.
  • the terminal device is far away from the geographical boundary line with respect to 0.2 ⁇ P ⁇ 0.5, and can search for fewer cells in the MCC home region. The coverage of the VPLMN area cell is large.
  • the terminal device can trigger the network search according to the existing protocol, and the time for triggering the search is not shortened or even extended, so that the terminal device can be relocated to the HPLMN network at the same time. Reduce the power consumption of the terminal device.
  • T2 can be calculated by other calculation methods through the P value, which is not limited herein.
  • the foregoing terminal device determines whether it is located in the MCC home zone, except that it is determined by the P value, and may also be determined by any one of the following manners or a combination of multiple manners:
  • the first type can be determined according to the Global Positioning System (English name: Global Positioning System, English abbreviation: GPS) to determine whether it enters the MCC attribution area;
  • GPS Global Positioning System
  • the latitude and longitude data of the geographical boundary line can be downloaded from the server to determine whether it is located in the MCC home zone. For example, when the latitude and longitude of the location where the terminal device is located is within a preset range compared with the latitude and longitude on the geographical boundary line, it indicates that the terminal device is located in the MCC home zone.
  • the terminal device can determine whether it enters the MCC home zone according to the wireless fidelity (English name: WIreless-FIdelity, English abbreviation: WIFI) connected to the device: for example, the terminal device can be pre-configured or obtained from the server or Self-learning, etc., to find out which WiFi hotspots are in the MCC home zone.
  • WIFI wireless fidelity
  • the terminal device When the terminal device is connected or swept to the WiFi hotspot A, it also resides on the HPLMN network; when connected or swept to the WiFi hotspot B, it resides on the VPLMN network. At this time, the terminal device stores the hotspot A and the hotspot B related information, and defines the hotspot A as the WiFi hotspot in the MCC home zone. Then, when the terminal device resides in the VPLMN network, but connects to or sweeps to the WiFi hotspot A, the terminal device determines to enter the MCC home zone.
  • a WIFI hotspot connected to a terminal device for example, a WIFI hotspot C to which the terminal device is connected is not located in the MCC home zone, In the VPLMN region, it indicates that the terminal device is very likely to be in the VPLMN region. At this time, the terminal device is likely to not leave the VPLMN region for a period of time. When the terminal device is still under the coverage of the hotspot C, the terminal device does not Trigger a web search.
  • the terminal device may further determine whether the terminal device is located in the MCC home zone, for example, may be located by using a base station. It is determined that the terminal device is located in the MCC home area, etc., and is not limited herein.
  • the terminal device when the terminal device determines that the P value is equal to 0, the terminal device performs according to an existing protocol. That is, the network search is triggered according to the timing duration set by the duration corresponding to the value of the EF-HPPLMN field in the SIM card.
  • the target timer in the foregoing embodiment may be a separate timer, or may be a high-priority PLMM search timer, which is not limited herein. It should be understood that if it refers to a high priority PLMN search timer, correspondingly, triggering a network search is to perform a network search by triggering a high priority PLMN search.
  • triggering a network search can also be done in the following ways:
  • the circle is the coverage of a certain VPLMN border area cell.
  • the ideal coverage area of the network should be continuous, and there is no coverage area between the coverage area of the cell and the cell.
  • the network side is not easy to set up the base station. There may be no coverage areas. As shown in the ellipse area in the figure, it refers to the place where the terminal device does not receive the network signal.
  • the network side will tell the terminal device which other cells are nearby, usually the cell with the intersection in the coverage area, that is, the neighboring cell.
  • the terminal device can camp on the corresponding cell, allowing the terminal device to seamlessly switch between cells.
  • the terminal device triggers a network search. This method uses this feature to initiate a search, because in the above situation, it is highly probable that the terminal device is a geographically bordered scene.
  • the P value calculated by the terminal device may be equal to 0.
  • the terminal device when the P value calculated by the terminal device is equal to 0, the terminal device is in the no-coverage area, and the terminal device may trigger the searched cell. It is recorded that the terminal device does not trigger a network search when the cell is re-entered the next time.
  • the terminal device when the terminal device resides on the VPLMN and the resident duration reaches the preset duration, even when it is determined that the P value is not equal to 0, the terminal device does not calculate according to the P finger.
  • the trigger time triggers the network search, but triggers the network search according to the preset time duration of the high priority PLMN search timer.
  • the specific duration of the preset duration may be selected according to the actual application, and is not limited herein.
  • the terminal device can determine the MCC corresponding to the SIM card installed on the terminal device, and determine whether it enters the MCC home zone, that is, when the terminal device determines that it is located in the MCC home zone. Then, search for the HPLMN network. That is, when the terminal device resides on the VPLMN network, the network search is triggered as long as the terminal device determines that it is located in the MCC home zone. When the terminal device is under the coverage of the HPLMN, the terminal device can effectively avoid the problem of staying on the VPLMN network for a long time.
  • the terminal device determines whether it is about to enter the MCC home zone.
  • the specific device may have multiple modes. The following describes:
  • FIG. 5 is a schematic flowchart of a method for determining whether a terminal device is about to enter an MCC home zone according to step 202 of FIG. 2. As shown in FIG. 5, the method includes:
  • the identification code of the third cell and the identification code of the third cell neighboring area may be recorded at the terminal device. It should be understood that each cell has its own specific cell identification code, ie, Cell-ID.
  • the third cell is a first VPLMN cell that is camped when the terminal device enters the VPLMN region by the MCC home zone.
  • FIG. 6 is another schematic diagram of a coverage area of a cell around a geographic boundary. It can be understood that, according to the characteristics of the layout of the border area, there is a high possibility that the third cell and the neighboring cell of the third cell and the cell of the MCC home zone have overlapping regions.
  • the range in which circle B is located represents The coverage of the VPLMN area cell
  • circle A represents the coverage of the cell coverage of the MCC home area.
  • the identifier of the first camped cell and its neighboring cell may be recorded, that is, the first The identification codes of the three cells and the third cell neighboring area are recorded.
  • FIG. 7 is another schematic diagram of the coverage of the cell around the geographic boundary.
  • the terminal device can immediately trigger the network search, or wait for a preset time. , then trigger a web search.
  • the first camped VPLMN cell and its neighboring cell may be recorded.
  • the terminal device stays in the VPLMN cell for a preset time, for example, after the terminal device roams for 6 hours, when the terminal device camps on any of the recorded cells, it is determined that the terminal device is about to enter the MCC home zone, that is, the network search is triggered. Therefore, the problem of long-term residence on the VPLMN network is effectively avoided, that is, the speed at which the terminal device resides from the VPLMN network to the HPLMN network is accelerated.
  • the terminal device may perform network search only on the part of the network, and the partial system network may include at least one of the following networks: for example, a GSM network. , WCDMA network and LTE network, wherein the LTE network may be a time division long term evolution (English full name: Time Division Long Term Evolution, English abbreviation: TD-LTE) network or frequency division long term evolution (English full name: Frequency Division Duplex Long Term Evolution, English abbreviation: FDD-LTE) network.
  • TD-LTE Time Division Long Term Evolution
  • FDD-LTE Frequency Division Duplex Long Term Evolution
  • the network of the partial system may also include a UMTS network, a CDMA network, and the like, which are not limited herein.
  • the terminal device After the terminal device triggers the network search, it can search only the network of the partial network standard, for example, the GSM network with a relatively wide coverage rate, and the terminal device can be further reduced by increasing the speed at which the terminal device resids from the VPLMN network to the HPLMN network. Power consumption.
  • the partial network standard for example, the GSM network with a relatively wide coverage rate
  • the time interval that the terminal device in the embodiment of the present application triggers the network search every two times is greater than or equal to T3, that is, greater than or equal to the EF-HPPLMN field of the SIM card.
  • the terminal device when the terminal device resides on the VPLMN network and when the terminal device resides in the HPLMN network in the manner of the foregoing embodiment, when the terminal device resides in the VPLMN network again, the terminal triggers the time of the network search by using the manner provided by the foregoing embodiment, and the interval between the two triggering network searches should be If the value is greater than or equal to T3, in actual applications, the action of frequently triggering the search can be effectively reduced, and the power consumption of the terminal device can be reduced.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • the terminal device includes a reading module 801 , a processing module 802 , and a search module 803 .
  • the reading module 801 is configured to determine an MCC attribution area corresponding to the SIM card when the terminal device resides in the VPLMN;
  • the processing module 802 is configured to: determine whether the terminal device has entered the MCC home zone or is about to enter the MCC home zone, and if the processing module 802 determines that the terminal device has entered the MCC home zone or is about to enter the MCC home zone, the search module 803 is triggered. Conduct a web search;
  • the search module 803 is configured to perform a network search according to the trigger of the processing module 802.
  • the terminal module further includes: the search module 803 is further configured to:
  • the processing module 802 is also used to:
  • the processing module 802 determines that the ratio of the second cell to the first cell is higher than the preset ratio, determining that the terminal enters the MCC home zone, where the preset ratio value is not equal to zero.
  • the search module 803 includes a target timer 8031 and a search unit 8032;
  • the processing module 802 is also used to:
  • the target timer 8031 is configured to start timing when determining that the terminal device enters the MCC home zone
  • the notification search unit 8032 When the timing of the target timer 8031 times out for the first timing period, the notification search unit 8032 performs a network search.
  • the terminal device in the embodiment of the present application is described above from the perspective of the modular function.
  • the following describes the terminal device in the embodiment of the present application from the perspective of hardware processing.
  • FIG. 9 a terminal provided by the embodiment of the present application is provided. Another schematic diagram of the device:
  • the terminal device may further include: a physical device processor 901 corresponding to one or more of the above-described embodiment reading module 801, processing module 802, and search module 803 (eg, one or more processes)
  • the memory 903 and the storage medium 905 may be short-term storage or persistent storage.
  • the program stored in the storage medium 905 may include one or more modules (not shown), each of which may include a series of instruction operations in the centering terminal device.
  • central processor 901 can be arranged to communicate with storage medium 905, executing a series of instruction operations in storage medium 905 on the terminal device.
  • the terminal device may also include one or more power sources 906, one or more operating systems 907, and a WIFI module 908, etc.
  • power sources 906 one or more operating systems 907
  • WIFI module 908 a WIFI module
  • the steps or functions performed by the terminal device in the embodiment of the present application may be based on the structure of the terminal device shown in FIG. 8. For details, refer to the corresponding process in the foregoing embodiment, and details are not described herein again.
  • the processor involved in the foregoing device embodiment may be a central processing unit. (central processing unit, CPU for short), network processor (NP) or a combination of CPU and NP.
  • the processor may further include a hardware chip, and may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination thereof. No limitation is imposed on this application.
  • the disclosed systems, modules, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional module in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated modules when implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), A variety of media that can store program code, such as random access memory (RAM), disk, or optical disk.

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Abstract

本申请实施例公开了一种搜网方法以及终端设备，该搜网方法应用于终端设备中，终端设备安装有客户识别模块SIM卡，本申请实施例方法部分包括：当终端设备驻留于拜访公共陆地移动网络VPLMN中时，确定SIM卡对应的MCC归属区域；确定终端设备是否已进入MCC归属区域或即将进入MCC归属区域；若终端设备已进入MCC归属区域或即将进入MCC归属区域，则触发网络搜索。本申请实施例还公开了一种终端设备，用于提高终端设备从VPLMN网络驻留回HPLMN网络的速度。

Description

一种搜网方法以及终端设备 技术领域
本申请涉及移动通信领域，尤其涉及到一种搜网方法以及终端设备。
背景技术
公共陆地移动网络(英文全称：Public Land Mobile Network，简称：PLMN)，为政府所批准的运营商为大众提供移动通信服务的网络。当终端设备当前所在的网络不同于归属公共陆地移动网络(英文全称：Home PLMN，简称HPLMN)时，则该终端设备处于漫游状态，漫游于拜访公共陆地移动网络(英文全称：Visited PLMN，简称：VPLMN)。
根据3GPP TS23.122的规定，终端设备在一般情况下，须运作在HPLMN或客户识别模块(英文全称：Subscriber Identity Module，英文简称：SIM)卡里所定义的等价公共陆地移动网络(英文全称：Equivalent HPLMN，简称：EHPLMN)网络，当终端设备离开HPLMN或EHPLMN的覆盖范围时，可以选择驻留在VPLMN。
为了给用户提供不间断的移动通信服务，不同的运营商会在各区域广布基站，包含边界区域，通常边界两边的基站覆盖范围会出现重叠，当终端设备处于边界区域时，可以接收到多个PLMN基站发送的信号。当该终端设备的HPLMN运营商在边界区域的覆盖率不如VPLMN运营商在区域边界的覆盖率时，则可能会出现终端设备处于HPLMN所属区域，但却经常驻留在VPLMN的问题。
为了让终端设备不长期停留在VPLMN上，根据3GPP TS 23.122的规定，终端设备只有两种情况有机会从VPLMN网络回到HPLMN网络，分别为VPLMN掉网、以及高优先级PLMN搜索定时器(High priority PLMN search timer)超时，该高优先级PLMN搜索定时器存在SIM卡的高优先级PLMN搜索周期EF-HPPLMN栏位中。即当终端设备从VPLMN掉网，执行一般的搜网，或高优先级PLMN搜索定时器时长超过预设的值，执行高优先级PLMN搜索。而在实际应用中，例如在VPLMN布网较密的HPLMN边界地区，当终端设 备驻留在VPLMN时，不容易从VPLMN掉网。而高优先级PLMN搜索定时器规定于第三代合作伙伴计划(英文全称：3rd Generation Partnership Project，英文简称：3GPP)TS 23.122中。该高优先级PLMN搜索定时器的时长设置于SIM卡的高优先级PLMN搜索周期EF-HPPLMN栏位。其中，高优先级PLMN搜索定时器以6分钟为单位，长度为6分钟到8小时，其具体时长与EF-HPPLMN栏位的值有关，例如，当EF-HPPLMN栏位值为0时，说明未对设置该高优先级PLMN搜索定时器，当该EF-HPPLMN栏位值为1时，则高优先级PLMN搜索定时器的定时时长为6分钟，当栏位值为2时，说明该高优先级PLMN搜索定时器的定时时长为12分钟，以此类推。若SIM卡中EF-HPPLMN栏位没有值，高优先级PLMN搜索定时器定时时长默认设为60分钟。即，高优先级PLMN搜索定时器的定时时长最小为6分钟。
因此，若通过高优先级PLMN搜索定时器超时才执行高优先级PLMN搜索，则终端设备就很有可能长时间驻留在VPLMN网络上，即终端设备从VPLMN网络驻留回HPLMN网络的速度比较慢。
发明内容
本申请实施例提供了一种搜网方法以及终端设备，可以有效地避免长时间驻留在VPLMN网络上的问题，即加快了终端设备从VPLMN网络驻留回HPLMN网络的速度。
有鉴于此，本申请第一方面，提供了一种搜网方法：
该搜网方法应用于终端设备中，终端设备安装有SIM卡，当终端设备驻留于拜访公共陆地移动网络VPLMN中时，确定SIM卡对应的移动设备国家代码MCC归属区域；确定终端设备是否已进入MCC归属区域或即将进入MCC归属区域；若终端设备已进入MCC归属区域或即将进入MCC归属区域，则触发网络搜索。
即只要终端设备确定自身进入了MCC归属区域，即触发网络搜索，相对于现有技术，当终端设备驻留在VPLMN网络上时，只要终端设备确定进入了MCC归属区域，即MCC所在的区域，即触发网络搜索，当终端设备在HPLMN网络的覆盖范围下时，终端设备可以在触发搜索后立即从VPLMN网络驻留回 HPLMN网络，可以解决终端设备可以有效地避免长时间驻留在VPLMN网络上的问题，提高终端设备从VPLMN网络驻留回HPLMN网络的速度。
在一种可能的设计中，确定终端设备是否进入MCC归属区域具体包括：
确定第一小区的数量，并确定第二小区占第一小区的比例值。其中，第一小区为终端设备当前能搜到的全部小区，第二小区为第一小区中MCC与SIM卡对应的MCC相同的小区；
若第二小区占第一小区的比例值高于预设比例值，则确定终端进入MCC归属区域，其中，预设比例值不等于零。
给出了确定终端设备确定是否进入MCC归属区域的方式，增加了方案的可实施性。
在一种可能的设计中，终端设备可以根据第二小区占第一小区的比例值确定第一定时时长，并将第一定时时长设置为目标定时器的定时时长，并从确定终端设备进入MCC归属区域开始计时；当目标定时器的计时超时第一定时时长时，则触发网络搜索。
优选地，在一种可能的设计中，终端设备根据第二小区占第一小区的比例值确定第一定时时长具体可以通过以上方式确定：
根据以下公式确定第一定时时长T1；
Figure PCTCN2016081290-appb-000001
其中，
Figure PCTCN2016081290-appb-000002
其中，P为第二小区占第一小区的比例值，P＇为预设比例值。
当终端设备根据P值确定进入了MCC归属区域时，可以通过上述计算公式调整终端设备触发网络搜索的时间，这样可以有效地避免终端设备长时间驻留在VPLMN网络的问题，提高从VPLMN网络驻留回HPLMN网络的速度。
在一种可能的设计中，若第二小区占第一小区的比例值小于或等于预设比例值，则根据第二小区占第一小区的比例值确定第二定时时长，将第二定时时长设置为目标定时器的时长；当目标定时器的计时超时第二定时时长时，则触发网络搜索。
优选地，在一种可能的设计中，终端设备根据第二小区占第一小区的比例值确定第二定时时长具体可以通过以下方式确定：
根据以下公式确定第二定时时长T2；
Figure PCTCN2016081290-appb-000003
其中，T为SIM卡的高优先级PLMN搜索周期EF-HPPLMN栏位的值所对应的时长。
当终端设备确定P值小于预置数值P′时，终端设备还可以根据P值触发网络搜索，根据P值，动态调节触发网络搜索的时间，可以有效地减少终端设备频繁搜索的动作。这样可以有效地避免终端设备长时间驻留在VPLMN网络的问题，提高从VPLMN网络驻留回HPLMN网络的速度。
在一种可能的设计中，确定终端设备是否进入MCC归属区域或即将进入MCC归属网络还可以通过以下方式：
根据全球定位系统(英文全称：Global Positioning System，英文简称：GPS)定位确定终端设备是否进入MCC归属区域或即将进入MCC归属区域；
或者，
根据连接到的无线保真(英文全称：Wireless Fidelity，英文简称：WIFI)定位确定终端设备是否进入MCC归属区域或即将进入MCC归属区域。
即提供了确定终端设备是否进入MCC归属区域或即将进入MCC归属区域的方式，增加方案的多样性。
在一种可能的设计中，确定终端设备是否将即将进入MCC归属区域之前还包括：
记录第三小区的识别码以及第三小区的邻区的识别码，第三小区为终端设备由MCC归属区域进入VPLMN区域时驻留的第一个VPLMN小区；
若根据识别码确定当前驻留的小区为第三小区或第三小区的邻区，则确定终端设备即将进入MCC归属区域。
在一种可能的设计中，上述触发网络搜索具体是通过触发高优先级PLMN搜索的方式进行网络搜索。
在一种可能的设计中，终端设备触发网络搜索之后，只对部分制式的网络进行搜索，其中，在部分制式的网络可以包括以下网络的至少一种：
全球移动通信系统(英文全称：Global System for Mobile Communication，英文简称：GSM)网络；
宽带码分多址(英文全称：Wideband Code Division Multiple Access，英文 简称：WCDMA)网络；
长期演进(英文全称：Long Term Evolution，英文简称：LTE)网络。
当终端设备触发高优先级PLMN搜索后，可以只对部分网络制式的网络进行搜索，例如覆盖率比较广的GSM网络等，在提高终端设备从VPLMN网络驻留回HPLMN网络的速度的同时，可以进一步地减少终端设备的功率消耗。
第二方面，本申请实施例提供了一种终端设备，该终端设备具有实现上述第一方面方法设计中终端设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。所述模块可以是软件和/或硬件。
在一种可能的设计中，该终端设备包括：
读取模块，用于当所述终端设备驻留于VPLMN中时，确定所述SIM卡对应的MCC归属区域；
处理模块，用于确定所述终端设备是否已进入所述MCC归属区域或即将进入所述MCC归属区域，若所述处理模块确定所述终端设备已进入所述MCC归属区域或即将进入所述MCC归属区域，则触发搜索模块进行网络搜索；
所述搜索模块，用于根据所述处理模块的触发进行网络搜索。
在一个可能的设计中，该终端设备的结构中包括射频模块、天线、总线、存储器以及处理器，射频模块、处理器和存储器通过总线连接；所述处理器用于第一方面中的方法流程。
第三方面，本申请实施例提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第一方面或第二方面的方法。
相较于现有技术，从以上技术方案可以看出，当终端设备驻留于VPLMN中时，可以确定SIM卡对应的MCC归属区域，接着终端设备是否已进入MCC归属区域或即将进入MCC归属区域，若终端设备已进入MCC归属区域或即将进入MCC归属区域，则触发网络搜索。应理解，当终端设备确定进入了MCC归属区域或即将进入MCC归属区域，此时触发网络搜索，相较于现有技术，当终端设备在HPLMN的覆盖范围下时，终端设备可以有效地避免长时 间驻留在VPLMN上的问题，加快终端设备从VPLMN网络驻留回HPLMN网络的速度。
附图说明
图1为地理边界周围小区覆盖范围的一个场景示意图；
图2为本申请实施例一种搜网方法一个实施例的流程示意图；
图3为图2步骤202确定终端设备是否进入MCC归属区域的一种方法流程示意图；
图4为VPLMN边界区域小区的覆盖范围场景示意图；
图5为为图2步骤202确定终端设备是否即将进入MCC归属区域的一种方法流程示意图；
图6为地理边界周围小区覆盖范围的另一场景示意图；
图7为地理边界周围小区覆盖范围的另一场景示意图；
图8为本申请实施例一种终端设备一种结构示意图；
图9为本申请实施例一种终端设备另一结构示意图。
具体实施方式
本申请实施例提供了一种搜网方法以及终端设备，该方法应用于终端设备中，终端设备安装有客户识别模块SIM卡，当终端设备驻留于VPLMN网络中时，确定SIM卡对应的MCC归属区域，当确定终端设备已进入MCC归属区域或即将进入MCC归属区域，则触发网络搜索。跟现有技术相比，当终端设备在HPLMN网络的覆盖范围下时，可以有效地避免终端设备长时间驻留在VPLMN网络上的问题，加快终端设备从VPLMN网络驻留回HPLMN网络的速度。
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
本申请实施例的技术方案，可以应用于无线蜂窝网络的各种通信系统，例如：GSM系统，码分多址(英文全称：Code Division Multiple Access，英文简称：CDMA)系统，宽带码分多址系统，通用分组无线业务(英文全称：General Packet Radio Service，英文简称：GPRS)系统，LTE系统，通用移动通信系统(英文全称：Universal Mobile Telecommunications System，英文简称：UMTS)，未来的5G通信系统等，本申请对此并不限定。
需要说明的是，本申请实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。终端设备可以经无线接入网(英文全称：Radio Access Network，英文简称:RAN)与一个或多个核心网进行通信，终端设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(英文全称：Personal Communication Service，英文简称：PCS)电话、无绳电话、会话发起协议话机、无线本地环路(英文全称：Wireless Local Loop，英文简称：WLL)站、个人数字助理(英文全称：Personal Digital Assistant，英文简称：PDA)等设备。终端设备也可以称为用户装备(英文全称：User Equipment，英文简称；UE)、移动台(英文全称：Mobile Station，英文简称：MS)、远程站(英文全称：Remote Station，英文简称：RS)、远程终端(英文全称：Remote Terminal，英文简称：RT)、接入终端(英文简称：Access Terminal，英文简称：AT)等，本申请对此并不做限定。
应理解，国际移动用户识别码(英文全称：international mobile subscriber identity，英文全称：IMSI)，是国际上为了唯一识别一个移动用户所分配的号码。该IMSI共有15位，由MCC、移动设备网络代码(英文全称：Mobile Network Code，英文简称：MNC)以及移动用户识别码(英文全称：Mobile Subscriber Identification Number，英文简称：MSIN)依次组成。其中，MCC的资源由国际电联(英文全称：International Telecommunication Union，英文简称：ITU)统一分配和管理，用于唯一识别移动用户所属的国家，共3位。例如，中国的MCC为460，美国的MCC为310，香港地区的MCC为454。在本申请实施 例中描述的MCC归属区域指的是安装在终端设备上的SIM卡MCC所对应的地区或者国家区域，MCC归属区域内包括多个HPLMN小区。
应理解，当终端设备驻留在低优先级的PLMN时,终端设备需按SIM卡EFHPPLMN规范的时间间隔,即，高优先级PLMN搜索定时器的时长定期起来进行网络搜索，即高优先级PLMN搜索，一般会按照一定的优先级顺序进行网络搜索，其根据具体的实现决定，但一般HPLMN网络都是较高优先级搜索的。例如根据以下优先级顺序进行搜索：HPLMN>EHPLMN>用户控制PLMN(英文全称：User Controlled PLMN，英文简称：OPLMN)/运营商控制PLMN(英文全称：Operator Controlled PLMN，英文简称：UPLMN>VPLMN。即搜索HPLMN网络的优先级是较高优先级的网络搜索。
应理解，当终端设备所在的网络与安装在终端设备上的SIM卡的国际移动识别码所对应的HPLMN不同时，称终端设备漫游在VPLMN网路上。通常相同MCC的不同运营商之间的PLMN，因商业竞争关系，互相不会签订漫游协定，例如中国移动用户不能使用中国联通的网络服务，中国移动用户在尝试注册中国联通的PLMN时，会收到拒绝。不同MCC的PLMN间，为了让使用者在离开HPLMN覆盖时，仍能使用基本通信服务，会互相签订漫游协定，例如中国移动用户若有申办美加漫游服务，可以使用美国运营商的移动通信服务。本申请实施例中所称的VPLMN均是指与终端设备不同MCC的VPLMN。
请参阅图1，图1为在地理边界周围小区覆盖范围的一个场景示意图。在图1中，圆圈内代表一个小区的覆盖范围，其中，圆圈A表示的是MCC归属区域内，即终端设备SIM卡对应的HPLMN小区所覆盖的范围，圆圈B表示VPLMN区域小区所覆盖的范围，圆圈C代表的是其他运营商的小区覆盖范围。其中，圆圈A代表的小区与圆圈B代表的小区MCC相同，而与圆圈C代表的小区MCC不同。
应理解，在不同MCC的区域或者国家的交界处，即图1所示的地理边界线处，虽然基站的架设地点受到区域边界限制，但基站的信号因不具形体，不受边界限制。因此，在地理边界线附近，终端设备常常可以同时收到来自于不同MCC的基站信号。
如图1所示，终端设备1在地理边界线处，既在MCC归属区域内的HPLMN 小区的覆盖范围下，也在VPLMN小区的覆盖范围下，终端设备1可以在这两者的覆盖范围下取得HPLMN小区或者VPLMN区域小区所提供的移动通信服务。或者，如终端设备2所示，终端设备2在VPLMN区域，但在HPLMN小区以及VPLMN小区的覆盖范围下，终端设备2可以取得HPLMN小区或者VPLMN区域小区所提供的移动通信服务。
当HPLMN网络在地理边界线处的覆盖率不如VPLMN网络时，如图1便容易发生终端设备在MCC归属区域内，但终端设备却经常驻留VPLMN网络的问题。
当终端设备驻留在VPLMN网络时，只要终端设备确定自身进入了MCC归属区域或者即将进入MCC归属区域时，即触发网络搜索。如图1所示，终端设备在MCC归属区域时，由布网特点可知，终端设备极有可能在HPLMN网络的覆盖范围下。此时终端设备却驻留在VPLMN网络上时，终端设备即可触发网络搜索，可以有效地避免长时间驻留在VPLMN网络上的问题，即加快了终端设备从VPLMN网络驻留回HPLMN网络的速度。
请参阅图2，图2为本申请一种搜网方法一个实施例的流程示意图，包括：
201、当终端设备驻留于拜访公共陆地移动网VPLMN中时，确定SIM卡对应的MCC归属区域；
当终端设备驻留在VPLMN网络时，可以确定SIM卡对应的MCC归属区域。需要说明的是，本申请实施例中描述的SIM卡均是指安装在该终端设备上的卡。
由于SIM卡中储存了用户身份识别数据，包含IMSI。该IMSI由发卡运营商的MCC、MNC以及移动用户识别码(英文全称：Mobile Subscriber Identification Number，英文简称：MSIN)依次组成。因此当终端设备中安装SIM卡并启用后，通过SIM卡中记载的IMSI信息，即可确定该SIM卡对应的MCC，从而确定该SIM卡对应的MCC归属区域。
202、确定终端设备是否进入MCC归属区域或即将进入MCC归属区域；
203、若确定终端设备进入MCC归属区域或者即将进入MCC归属区域，则触发网络搜索。
为了便于理解与叙述，下面针对终端设备是否进入MCC归属区域以及是 否即将进入MCC归属区域分别进行描述：
一、终端设备确定自身是否进入MCC归属区域，其具体可以有多种方式，下面以具体的实施例进行说明：
图3为图2步骤202确定终端设备是否进入MCC归属区域的一种方法流程示意图，具体请参阅图3：
301、终端设备确定第一小区的数量；
其中，第一小区是指所述终端设备当前能搜到的全部小区。
如例1，假设终端设备搜到3个中国移动小区，1个中国电信小区，3个国外运营商的小区，则第一小区的数量为7个。
302、终端设备确定第二小区占第一小区的比例值；
其中，第二小区为当前小区中MCC与所述SIM卡对应的MCC相同的小区。当终端设备确定了第二小区的个数x以及第一小区的个数y后，可以根据公式P＝x/y计算得到第二小区的个数与第一小区的个数的比例值P。
如例1所示，则第一小区为3个中国移动小区与1个中国电信小区的和，总共为4个。
本领域技术人员可以知道，终端设备扫网找到的第二小区与所有小区的比例，跟终端设备与地理边界线的距离有相关性。
需要说明的是，第一小区以及第二小区的数量为终端设备在执行搜网过程中记录得到。即在图2步骤202触发网络搜索之前，终端设备的掉网重搜或执行高优先级PLMN搜索过程中得到。可以理解的是，两者的差别在于有没有驻留在原小区,掉网重搜是指已不驻留在任何小区时执行的搜索。执行高优先级PLMN搜索时,终端设备还驻留在原小区。驻留指的是终端设备能不能收到网络侧的寻呼。
303、终端设备确定第二小区占第一小区的比例值是否大于预设比例值；
当终端设备根据公式P＝x/y计算得到P值后，进一步确定P值是否大于或者等于预设比例值P′。
304、当终端设备确定第二小区占第一小区的比例值是大于预设比例值时，则确定已进入MCC归属区域。
当终端设备确定P值大于预设比例值P′，则确定终端设备进入MCC归 属区域。
本领域技术人员可以知道，当终端设备位于地理边界线上时,即，位于不同MCC的地区或国家的交界处时，如图1所示的地理边界线上时，在边界两边的布网密度差不多的情况下，P′值应设为0.5；若漫游网络的布网密度比本地网络高，P′值可以设置小于0.5。需要说明的是，具体的P′值的数值可以根据实际的应用场景进行配置，具体此处不做限定。
由此可得，根据P值与地理边界线的相关性，当计算出的第二小区个数比例P值大于P′时，说明终端设备位于MCC归属区域；若小于或者等于P′值，则说明终端设备在漫游地VPLMN区域，即MCC归属区域的另一边。当终端设备在MCC归属区域时，一般都在本国或者本地区的运营商小区的网络覆盖范围下。
以例1为例进行，其中，具体以P′为0.5为例进行说明，由例1可得，x＝4，y＝7，则计算出来的P值约等于0.57，大于0.5，则说明终端设备进入在MCC归属区域内，因此很可能已经位于HPLMN的覆盖下。
需要说明的是，在本申请的一些实施例中，当终端设备确定进入MCC归属区域后，可以立刻触发网络搜索，或在预设时间过后再触发网络搜索，例如5分钟过后搜索HPLMN网络。其中，该预设时间可以根据实际应用情况进行设置，这里并不做限定。
优选地，在一些实施例中，可以根据P值确定第一定时时长，将第一定时时长设置为目标定时器的定时时长，当目标定时器的计时超时，终端设备才触发网络搜索。即进一步限定确定进入MCC归属网络时，终端设备何时触发网络搜索时间。具体地，根据P值可以通过以下方式确定第一定时时长：
终端设备可以根据以下公式计算得到第一定时时长T1；
Figure PCTCN2016081290-appb-000004
其中，
Figure PCTCN2016081290-appb-000005
这里还需要说明的是，除了根据上述公式外，通过P值还可以有其他的计算公式或者方式得到T1，本申请对此并不做限定。
例如，终端设备可以通过预设映射列表确定对应的T1值，其中，该预设映射列表为终端设备预先配置好的，该预设映射列表保存着P值与T1的映射关系，即P值对应着确定的T1值，终端设备可以根据计算出来的P值，通过 查询预设映射列表确定对应的T1，最后根据查询得到的T1设置目标定时器的定时时长。
当终端设备驻留在VPLMN网络上时，当终端设备确定自身进入MCC归属区域时，终端设备可以根据与MCC归属区域的位置关系，动态的调节触发网络搜索的时间，从而有效地避免长时间驻留在VPLMN网络上的问题，同时，通过调节搜索时间，还可以有效地减少终端设备频繁触发搜索的动作，减少终端设备的功耗。
需要说明的是，在本申请的一些实施例中，当终端设备确定P值小于或者等于P′时，终端设备可以根据P值确定第二定时时长，将第二定时时长设置为目标定时器的时长；
即当终端设备确定P值小于或者等于P′时，终端设备也可以根据P值设置目标定时器的时长，当目标定时器的计时超时第二定时时长时，终端设备才触发网络搜索。具体地，根据P值可以通过以下方式确定第二定时时长：
终端设备根据以下公式计算得到第二定时时长T2；
Figure PCTCN2016081290-appb-000006
其中，所述T为所述SIM卡的高优先级PLMN搜索周期EF-HPPLMN栏位的值所对应的时长。
需要说明的是，在本申请的一些实施例中，这里假设预设比例值P′为0.5，当计算出来的P值小于0.5时，本领域技术人员可以知道，此时终端设备位于VPLMN区域，终端设备与地理边界线的距离相关，P值越小，说明终端设备能搜索到MCC归属区域的小区则越少，那么当终端设备计算出来的P值小于0.5时，即小于预设比例值P′时，进一步的，终端可以根据具体的P值确定搜索的时间。例如：
当0.2<P<0.5时，终端设备按照第二定时时长T2设置目标定时器的时长，当目标定时器计时超时时，才触发网络搜索。应理解，在这个范围下，终端设备虽然位于VPLMN区域，但终端设备离地理边界线比较近，此时终端设备根据T2设置目标定时器的定时时长，即缩短触发搜索的时间，加快终端设备从VPLMN网络驻留回HPLMN网络的速度。
另一种情况，当P<＝0.2时，终端设备按照现有协议触发网络搜索，即按照SIM卡中EF-HPPLMN栏位的值所对应的时长所设置的定时时长触发网络 搜索。应理解，在这个范围下，终端设备虽然位于VPLMN区域，相对于0.2<P<0.5的情况，终端设备离地理边界线已经比较远，能搜索到较少的MCC归属区域的小区，此时被VPLMN区域小区的覆盖率较大，，此时终端设备可以终端设备按照现有协议触发网络搜索，不缩短甚至延长触发搜索的时间，这样，即保证终端设备可以驻留回HPLMN网络时，同时可以减少终端设备的功耗。
同理，需要理解的是，除了根据上述公式外，当终端设备确定P值小于或者等于P′时，通过P值还可以有其他的计算方式计算得到T2，具体此处不做限定。
上述终端设备确定自身是否位于MCC归属区域除了通过P值来确定外，还可以通过以下任意一种方式或多种方式的结合来确定：
第一种，可以根据全球定位系统(英文全称：Global Positioning System，英文简称：GPS)定位确定自身是否进入MCC归属区域；
当终端设备在连上网路，有数据服务的时候，可以从服务器下载地理边界线的经纬度数据从而确定自身是否位于MCC归属区域。例如，当终端设备所处位置的经纬度与地理边界线上的经纬度相比在预置范围内时，则说明终端设备是位于MCC归属区域。
第二种，终端设备可以根据连接到的无线保真(英文全称：WIreless-FIdelity，英文简称：WIFI)定位确定自身是否进入MCC归属区域：例如，终端设备可以通过预先配置，或者从服务器获得或自学习等方式,得知哪些WiFi热点位是否MCC归属区域内。
为了便于理解，以自学习的为例进行说明：
终端设备连上或者扫到WiFi热点A时，同时驻留在HPLMN网络上；连上或者扫到WiFi热点B时，驻留在VPLMN网络上。此时，终端设备将热点A以及热点B相关相关信息进行储存，定义热点A为MCC归属区域内的WiFi热点。之后当终端设备驻留在VPLMN网络时，却连上或者扫到WiFi热点A时，则终端设备确定进入了MCC归属区域。
这里需要说明的是，在本申请的一些实施例中，当终端设备连接的WIFI热点，例如终端设备连接到的WIFI热点C不是位于MCC归属区域，而是位 于VPLMN区域时，说明终端设备极有可能在VPLMN区域，此时终端设备极有可能在一段时间内都不会离开VPLMN区域，那么当终端设备还在热点C的覆盖范围下时，终端设备不触发网络搜索。
需要说明的是，终端设备除了通过上述提到的GPS定位或者WIFI定位的方式确定是否进入MCC归属区域下，还可以有其他方式确定终端设备是否位于MCC归属区域，例如可以通过基站定位的方式，确定终端设备是否位于MCC归属区域等，具体此处不做限定。
需要说明的是，在本申请的一些实施例中，当终端设备确定上述P值等于0时，终端设备按照现有的协议执行。即按照SIM卡中EF-HPPLMN栏位的值所对应的时长所设置的定时时长触发网络搜索。
上述实施例中的目标定时器可以是指单独的定时器，也可以是指高优先级PLMM搜索定时器，具体此处不做限定。应理解，若是指高优先级PLMN搜索定时器，相对应的，触发网络搜索则是通过触发高优先级PLMN搜索的方式进行网络搜索。
在本申请的一些是实施例中，触发网络搜索还可以通过以下方式：
如图4所示，图4中，圆圈是某VPLMN边界区域小区的覆盖。应理解，理想的布网小区覆盖区域应该是连续的，小区与小区的覆盖区域之间中不存在无覆盖区域，但是，在建筑物里，或是郊区，网络侧不容易架设基站的地方，就可能存在无覆盖区域。如图中椭圆区域所示，即指终端设备接收不到网络信号的地方。当终端设备位于某个VPLMN小区的覆盖下时，网络侧会告诉终端设备，附近有哪些其他的小区，通常是覆盖范围里有交集的小区，即邻区。接下来，终端设备可以驻留在对应的小区上，让终端设备无缝地在小区之间切换。但当手机正跨过地理边界线或进入无覆盖区域时，这个比当前小区信号强的邻区就不会存在。此时终端设备触发网络搜索。这个方法就是利用这个特性来发起一次搜索，因为存在上述情况时，极有可能终端设备是处于地理边界的场景。
可以理解的是，图4所示应用场景下，此时，终端设备计算出来的P值可能等于0。
需要说明的是，在本申请的一些实施例中，当终端设备计算出来的P值等于0时，说明终端设备处于无覆盖区域，此时终端设备可以将触发搜索的小区 记录下，当下次再次进入该小区时，终端设备不触发网络搜索。
需要说明的是，在本申请的一些实施例中，当终端设备驻留在VPLMN上，且驻留时长达到预置时长时，即使当确定P值不等于0，终端设备不根据P指计算出来的触发时间触发网络搜索，而是即按照预设的高优先级PLMN搜索定时器的定时时长触发网络搜索。
需要说明的是，在实际应用中，预置时长的具体时长可以根据实际应用情况进行选择，具体此处不做限定。
相较于现有技术，从以上技术方案可以看出，终端设备可以确定安装在终端设备上的SIM卡对应的MCC，进而确定自身是否进入该MCC归属区域，即当终端设备确定位于MCC归属区域时，则搜索HPLMN网络。即当终端设备驻留在VPLMN网络上时，只要终端设备确定自身位于MCC归属区域，触发网络搜索。当终端设备在HPLMN的覆盖范围下时，终端设备可以有效地避免长时间驻留在VPLMN网络上的问题。
二、终端设备确定是否即将进入MCC归属区域，其具体可以有多种方式，下面分别进行描述：
图5为图2步骤202确定终端设备是否即将进入MCC归属区域的一种方法流程示意图。如图5所示，该方法包括：
501、记录第三小区的识别码和第三小区邻区的识别码；
在终端设备可以记录第三小区的识别码以及第三小区邻区的识别码。应理解，每个小区都有自己特定的小区标识码，即Cell-ID。其中，该第三小区为终端设备由MCC归属区域进入VPLMN区域时驻留的第一个VPLMN小区。
502、根据记录的识别码确定当前驻留的小区是否为第三小区或第三小区的邻区；
503、若确定当前驻留的小区是否为第三小区或第三小区的邻区，则确定终端设备即将进入MCC归属区域。
为了便于理解与叙述，下面结合附图进行说明：
如图6所示，图6为地理边界周围小区覆盖范围的另一场景示意图。可以理解的是，根据边界地区的布网特点，第三小区以及第三小区的邻区与MCC归属区域的小区存在重叠区域的可能性非常大。圆圈B所在的范围代表的是 VPLMN区域小区覆盖的范围,圆圈A代表的是MCC归属区域的小区覆盖的范围。当终端设备离开MCC归属区域所在小区的覆盖范围进入VPLMN区域小区的覆盖范围，并驻留在该VPLMN网络时，可以将第一个驻留的小区以及其邻区的识别码记录下，即将第三小区以及第三小区邻区的识别码记录下。
当终端设备从VPLMN网络回到HPLMN网络的过程中，若驻留在任何一个记录过的小区，即当驻留在记录过的第三小区或者第三小区的邻区时，可以触发高优先级PLMN搜索，如图7所示，图7为地理边界周围小区覆盖范围的另一场景示意图，当终端设备驻留在第三小区时，终端设备可以立即触发网络搜索，或者等待与预设时间过后，再触发网络搜索。
终端设备从MCC归属区域，进入VPLMN区域时，可以将第一个驻留的VPLMN小区以及其邻区记录下。当终端设备在VPLMN小区中停留预设时间后，例如终端设备漫游达到6小时后，当终端设备驻留到任何一个记录过的小区时，即确定终端设备即将进入MCC归属区域，即触发网络搜索，从而有效地避免长时间驻留在VPLMN网络上的问题，即加快了终端设备从VPLMN网络驻留回HPLMN网络的速度。
需要说明的是，在前述几个实施例中，当终端设备触发网络搜索之后，终端设备可以只对部分制式的网络进行网络搜索，部分制式的网络可以包括以下网络的至少一种：例如GSM网络、WCDMA网络以及LTE网络，其中LTE网络具体可以为时分长期演进(英文全称：Time Division Long Term Evolution，英文简称:TD-LTE)网络或者频分长期演进(英文全称：Frequency Division Duplex Long Term Evolution，英文简称:FDD-LTE)网络。
需要说明的是，部分制式的网络还可以包括UMTS网络、CDMA网络等，具体此处不做限定。
当终端设备触发网络搜索后，可以只对部分网络制式的网络进行搜索，例如覆盖率比较广的GSM网络等，在提高终端设备从VPLMN网络驻留回HPLMN网络的速度，可以进一步地减少终端设备的功率消耗。
另外需要说明的是，在本申请的一些实施例中，本申请实施例中的终端设备每两次触发网络搜索的时间间隔大于或等于T3，即大于或等于SIM卡的EF-HPPLMN栏位的值所对应的时长。应理解，当终端设备驻留于VPLMN网 络，并通过上述实施例的方式驻留回HPLMN网络时，当终端设备再次驻留于VPLMN网络，终端通过上述实施例所提供的方式触发网络搜索的时间，这两次触发网络搜索的间隔应该大于或等于T3，在实际应用中，可以有效地减少频繁触发搜索的动作，可以减少终端设备的功率消耗。
以上对本申请实施例中的一种搜网方法进行了描述，下面对本申请实施例中的终端设备进行描述：
具体请参阅图8，本申请实施例的终端设备一个结构示意图，该终端设备包括读取模块801、处理模块802以及搜索模块803。
读取模块801，用于当终端设备驻留于VPLMN中时，确定SIM卡对应的MCC归属区域；
处理模块802用于：确定终端设备是否已进入MCC归属区域或即将进入MCC归属区域，若所述处理模块802确定所述终端设备已进入MCC归属区域或即将进入MCC归属区域，则触发搜索模块803进行网络搜索；
搜索模块803，用于根据处理模块802的触发进行网络搜索。
在一种可能的设计中，该终端模块还包括：搜索模块803还用于：
确定第一小区的数量，第一小区为终端设备当前能搜到的全部小区；
处理模块802还用于:
确定第二小区占第一小区的比例值，第二小区为第一小区中MCC与SIM卡对应的MCC相同的小区；
用于若处理模块802确定第二小区占第一小区的比例值高于预设比例值，则确定终端进入MCC归属区域，其中，预设比例值不等于零。
在一种可能的设计中，搜索模块803包括目标定时器8031和搜索单元8032；
处理模块802还用于:
根据第二小区占第一小区的比例值确定第一定时时长；将第一定时时长设置为目标定时器的定时时长；
目标定时器8031，用于从确定终端设备进入MCC归属区域开始进行计时；
当目标定时器8031的计时超时第一定时时长时，通知搜索单元8032进行网络搜索。
需要说明的是，上述模块的其他功能或执行的步骤可以参照上述方法实施例中终端设备对应的步骤或者功能，具体此处不再赘述。
上面从模块化功能的角度对本申请实施例中的终端设备进行了描述，下面从硬件处理的角度对本申请实施例中的终端设备进行描述，请参阅图9，本申请实施例提供的一种终端设备另一结构示意图：
需要说明的是，该终端设备还可以包括：如可以包括一个或多个上述实施例读取模块801、处理模块802以及搜索模块803所对应的实体装置处理器901(例如，一个或一个以上处理器)，射频模块902以及存储器903，一个或一个以上存储程序代码904的存储介质905(例如一个或一个以上海量存储模块)。其中，存储器903和存储介质905可以是短暂存储或持久存储。存储在存储介905的程序可以包括一个或一个以上模块(图示没标出)，每个模块可以包括对中终端设备中的一系列指令操作。更进一步地，中央处理器901可以设置为与存储介质905通信，在终端设备上执行存储介质905中的一系列指令操作。
终端设备还可以包括一个或一个以上电源906，一个或一个以上操作系统907以及WIFI模块908等部件.本领域技术人员可以理解，图9中示出的终端设备结构并不构成对终端设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，本申请不做任何限定。
本申请实施例中由终端设备所执行的步骤或者功能可以基于该图8所示的终端设备结构示意图，具体可以参考前述实施例的对应过程，在此不再赘述。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
需要说明的是，上述装置实施例所涉及到的处理器可以是中央处理器 (central processing unit，简称CPU)，网络处理器(network processor，简称NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片，具体可以是专用集成电路(application-specific integrated circuit，简称ASIC)，可编程逻辑器(programmable logic device，简称PLD)或其组合。另外PLD可以是复杂可编程逻辑器件(complex programmable logic device，简称CPLD)，现场可编程逻辑门阵列(field-programmable gate array，简称FPGA)，通用阵列逻辑generic array logic,简称GAL)或其任意组合，在本申请中不做任何限定。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，模块和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能模块可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的模块果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、 随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (19)

  1. 一种搜网方法，其特征在于，所述方法应用于终端设备中，所述终端设备安装有客户识别模块SIM卡，所述方法包括：
    当所述终端设备驻留于拜访公共陆地移动网络VPLMN中时，确定所述SIM卡对应的移动设备国家代码MCC归属区域；
    确定所述终端设备是否已进入所述MCC归属区域或即将进入所述MCC归属区域；
    若所述终端设备已进入所述MCC归属区域或即将进入所述MCC归属区域，则触发网络搜索。
  2. 根据权利要求1所述的搜网方法，其特征在于，所述确定所述终端设备是否进入所述MCC归属区域包括：
    确定第一小区的数量，所述第一小区为所述终端设备当前能搜到的全部小区；
    确定第二小区占所述第一小区的比例值，所述第二小区为所述第一小区中MCC与所述SIM卡对应的MCC相同的小区；
    若所述第二小区占所述第一小区的比例值高于预设比例值，则确定所述终端进入所述MCC归属区域，其中，所述预设比例值不等于零。
  3. 根据权利要求2所述的搜网方法，其特征在于，所述触发网络搜索包括：
    根据所述第二小区占所述第一小区的比例值确定第一定时时长；
    将所述第一定时时长设置为目标定时器的定时时长，并从确定所述终端设备进入所述MCC归属区域开始计时；
    当所述目标定时器的计时超时所述第一定时时长时，则触发网络搜索。
  4. 根据权利要求3所述的搜网方法，其特征在于，所述根据所述第二小区占所述第一小区的比例值确定第一定时时长包括：
    根据以下公式确定所述第一定时时长T1；
    Figure PCTCN2016081290-appb-100001
    其中，
    Figure PCTCN2016081290-appb-100002
    其中，所述P为所述第二小区占所述第一小区的比例值，所述P＇为所述预设比例值。
  5. 根据权利要求2至4中任一项所述的搜网方法，其特征在于，所述方法还包括：
    若所述第二小区占所述第一小区的比例值小于或等于所述预设比例值，则根据所述第二小区占所述第一小区的比例值确定第二定时时长；
    将所述第二定时时长设置为所述目标定时器的时长；
    当所述目标定时器的计时超时所述第二定时时长时，则触发网络搜索。
  6. 根据权利要求5所述的搜网方法，其特征在于，所述根据所述第二小区占所述第一小区的比例值确定第二定时时长包括：
    根据以下公式确定所述第二定时时长T2；
    Figure PCTCN2016081290-appb-100003
    其中，所述T为所述SIM卡的高优先级PLMN搜索周期EF-HPPLMN栏位的值所对应的时长，所述P为所述第二小区占所述第一小区的比例值，所述P＇为所述预设比例值。
  7. 根据权利要求1所述的搜网方法，其特征在于，所述确定所述终端设备是否进入所述MCC归属区域或即将进入所述MCC归属网络包括：
    根据全球定位系统GPS定位确定所述终端设备是否进入所述MCC归属区域或即将进入所述MCC归属区域；
    或者，
    根据连接到的无线保真WIFI定位确定所述终端设备是否进入所述MCC归属区域或即将进入所述MCC归属区域。
  8. 根据权利要求1所述的搜网方法，其特征在于，所述确定所述终端设备是否将即将进入所述MCC归属区域之前还包括：
    记录第三小区的识别码以及所述第三小区的邻区的识别码，所述第三小区为所述终端设备由所述MCC归属区域进入VPLMN区域时驻留的第一个VPLMN小区；
    若根据所述识别码确定当前驻留的小区为所述第三小区或所述第三小区的邻区，则确定所述终端设备即将进入所述MCC归属区域。
  9. 根据权利要求1至8中任一项所述的搜网方法，其特征在于，所述触发网络搜索包括：
    通过触发高优先级PLMN搜索的方式进行网络搜索。
  10. 一种终端设备，其特征在于，所述终端设备安装有SIM卡，所述终端设备包括：
    读取模块，用于当所述终端设备驻留于拜访公共陆地移动网络VPLMN中时，确定所述SIM卡对应的移动设备国家代码MCC归属区域；
    处理模块，用于确定所述终端设备是否已进入所述MCC归属区域或即将进入所述MCC归属区域，若所述处理模块确定所述终端设备已进入所述MCC归属区域或即将进入所述MCC归属区域，则触发搜索模块进行网络搜索；
    所述搜索模块，用于根据所述处理模块的触发进行网络搜索。
  11. 根据权利要求10所述的终端设备，其特征在于，所述搜索模块还用于：
    确定第一小区的数量，所述第一小区为所述终端设备当前能搜到的全部小区；
    所述处理模块还用于:
    确定第二小区占所述第一小区的比例值，所述第二小区为所述第一小区中MCC与所述SIM卡对应的MCC相同的小区；
    用于若所述处理模块确定所述第二小区占所述第一小区的比例值高于预设比例值，则确定所述终端进入所述MCC归属区域，其中，所述预设比例值不等于零。
  12. 根据权利要求11所述的终端设备，其特征在于，所述搜索模块包括目标定时器和搜索单元；
    所述处理模块还用于:
    根据所述第二小区占所述第一小区的比例值确定第一定时时长；将所述第一定时时长设置为目标定时器的定时时长；
    所述目标定时器，用于从确定所述终端设备进入所述MCC归属区域开始进行计时；
    当所述目标定时器的计时超时所述第一定时时长时，通知所述搜索单元进行网络搜索。
  13. 根据权利要求12所述的终端设备，其特征在于，所述处理模块具体 用于：
    根据以下公式确定所述第一定时时长T1；
    Figure PCTCN2016081290-appb-100004
    其中，
    Figure PCTCN2016081290-appb-100005
    其中，所述P为所述第二小区占所述第一小区的比例值，所述P＇为所述预设比例值。
  14. 根据权利要求11至13中任一项所述的终端设备，其特征在于，所述处理模块还用于：
    若所述第二小区占所述第一小区的比例值小于或等于所述预设比例值，则根据确定的所述第二小区占所述第一小区的比例值确定第二定时时长；
    将所述第二定时时长设置为所述目标定时器的时长；
    所述目标定时器，用于当所述第二小区占所述第一小区的比例值小于或等于所述预设比例值时开始计时；
    当所述目标定时器计时超时所述第二定时时长时，则通知所述搜索单元进行网络搜索。
  15. 根据权利要求14所述的终端设备，其特征在于，所述处理模块具体用于：
    根据以下公式确定所述第二定时时长T2；
    Figure PCTCN2016081290-appb-100006
    其中，所述T为所述SIM卡的高优先级PLMN搜索周期EF-HPPLMN栏位的值所对应的时长，所述P为所述第二小区占所述第一小区的比例值，所述P＇为所述预设比例值。
  16. 根据权利要求10所述的终端设备，其特征在于，所述处理模块还用于：
    根据GPS定位确定所述终端设备是否进入所述MCC归属区域或即将进入所述MCC归属区域；
    或者，
    根据连接到的WIFI定位确定所述终端设备是否进入所述MCC归属区域或即将进入所述MCC归属区域。
  17. 根据权利要求10所述的终端设备，其特征在于，所述处理模块还用于：
    用于记录第三小区的识别码以及所述第三小区的邻区的识别码，所述第三小区为所述终端设备由所述MCC归属区域进入VPLMN区域时驻留的第一个VPLMN小区；
    若根据记录的所述识别码确定当前驻留的小区为所述第三小区或所述第三小区的邻区，则确定所述终端设备即将进入所述MCC归属区域。
  18. 根据权利要求10至17中任一项所述的终端设备，其特征在于，所述搜索模块具体用于：
    通过触发高优先级PLMN搜索的方式进行网络搜索。
  19. 一种终端设备，其特征在于，包括：
    射频模块、天线、总线、处理器和存储器；
    所述射频模块、处理器和存储器通过总线连接；
    所述天线与所述射频模块连接；
    所述处理器用于执行权利要求1至9中任一项方法流程。
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EP3442275B1 (en) 2020-04-29
EP3442275A4 (en) 2019-05-08
KR20190002645A (ko) 2019-01-08
JP2019517195A (ja) 2019-06-20
KR102144298B1 (ko) 2020-08-13

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