CN104796962A - Network searching method and network searching device - Google Patents
Network searching method and network searching device Download PDFInfo
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- CN104796962A CN104796962A CN201410019816.9A CN201410019816A CN104796962A CN 104796962 A CN104796962 A CN 104796962A CN 201410019816 A CN201410019816 A CN 201410019816A CN 104796962 A CN104796962 A CN 104796962A
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- 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
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- 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
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Abstract
The invention discloses a network searching method and a network searching device. The method comprises the following steps: judging whether a registered public land mobile network RPLMN of user equipment can be registered as a long-term evolution LTE network when the user equipment searches a network; performing LTE network registration through the RPLMN if the RPLMN of the user equipment can be registered as an LTE network; and searching an LTE network according to optional network information stored in a preset standby public land mobile network SPLMN list and performing LTE network registration if the RPLMN of the user equipment cannot be registered as an LTE network, wherein the SPLMN list is used for storing the optional network information which is the information of LTE networks already registered by the user equipment. The problem that the efficiency of network searching is low in the prior art is effectively solved. According to the method, through RPLMN and SPLMN combination, user equipment is enabled to access an LTE network with higher priority, the network searching time is shortened for user equipment, and the efficiency of network searching by user equipment is improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of network method and device.
Background technology
Along with the development of mobile communication technology, LTE(Long Term Evolution in recent years, Long Term Evolution) technology obtains fast development, within the following a very long time, global system for mobile communications (GlobalSystem of Mobile communication, GSM) network, bandwidth code division multiple access (Wide band CodeDivision Multiple Access, WCDMA) trend that will be a normalization that coexists of network, LTE network etc., so support that the terminal of multiple access technology will be also the development trend of future terminal.
Global Subscriber identification card (the Universal Subscriber Identity Module of terminal, USIM) there are four class PLMN(Public Land Mobile Network in card, public land mobile network), this four class PLMN respectively: the PLMN list (being called for short: UPLMN list) that the PLMN list (being called for short OPLIMN list) that HPLMN list (being called for short EHPLMN list) of equal value, the PLMN list (being called for short HPLMN list) of limit priority, operator control, user control.The priority of this four class PLMN is EHPLMN list, HPLMN list, OPLMN list, UPLMN list from high to low successively.
According to wireless communication interface third generation agreement (The3rd Generation Partnership Project, TS23.122 regulation 3GPP), first terminal can select registered PLMN (Registerd Public Land Mobile Network after power-up, RPLMN), RPLMN is the network of the last successful registration of terminal.But along with popularizing of LTE network, increasing operator has carried out the customization of LTE prioritizing selection, now RPLMN network may be no longer the network preferentially going to register.
Specify according to 3GPP specification TS23.122, if when not having RPLMN or RPLMN unavailable during starting up of terminal, terminal can find an available PLMN according to the priority orders of four class PLMN, and after finding PLMN, terminal can be got off the community of this " suitable " is resident.For supporting the multimode terminal that LTE is preferential, if carry out automatic network selection at every turn, allowing it from LTE, look for net all by force, then carrying out looking for net according to above-mentioned PLMN priority orders, just have longer time to find network, greatly reduce Consumer's Experience.Further, if the network environment at user place does not have the LTE network of HPLMN, or last time successful registration network be not LTE network, may cause LTE priority of registration failure.
This problem is rare in some Radio Resource frequency ranges, and numerous country of operator is particularly outstanding.Such as: in order to reduce construction and the maintenance fund of networking, often occur increasing newly, annex and withering away between operator, this is easy to cause operator to there is one or more PLMN ID(Public Land Mobile NetworkIdentity simultaneously).If the PLMN ID of this operator's LTE network is different from 3G network PLMN ID, the 3G usim card of what this user handled is this operator (as, the usim card of WCDMA), under the requirement of LTE priority of registration, then the multimode terminal start meeting first search of user is by international mobile subscriber identity (International Mobile Subscriber Identification Number, IMSI) HPLMN resolved, namely the HPLMN network of LTE is first searched for, be registered to the HPLMN network of 3G again, then LTE network is registered to by the mode of gravity treatment or switching, cause multimode terminal directly can not register the problem of LTE network.In other words, in the uncovered place of 3G network as HPLMN, also first HPLMN can be searched for, after various access standard all cannot search the HPLMN of LTE, during by agreement regulation other PLMN of sequential search, just may search out the LTE network of this operator, cause LTE to register very very long, and the preferential demand of LTE can not be realized.
Summary of the invention
For the problems referred to above, the invention provides a kind of network method and device, the network selection mode in order to solve prior art searches the inefficient problem of net.
Based on above-mentioned technical problem, the present invention solves by the following technical programs.
On the one hand, the invention provides a kind of network selection method, comprise the steps: when net searched by subscriber equipment, judge whether the registered PLMN RPLMN of described subscriber equipment can be registered as Long Term Evolution LTE network; If so, then LTE network registration is carried out by described RPLMN; If not, then according to the optional network information search LTE network of the alternative public land mobile network SPLMN list storage pre-set, LTE network registration is carried out; Wherein, described SPLMN list is for storing optional network information, and described optional network information is the information of the LTE network that described user equipment registration is crossed.
Wherein, when the wireless access type of described RPLMN is LTE network and the public land mobile network PLMN packets of information of RPLMN is contained in described SPLMN list, then judge that described RPLMN can be registered as LTE network.
Wherein, according to the optional network information search LTE network of the alternative public land mobile network SPLMN list storage pre-set, carry out LTE network registration, specifically comprise: according to the priority order from high to low of each optional network information in described SPLMN list, read the optional network information in described SPLMN list; According to the described optional network information of current reading, the LTE network that search and described optional network information match; When searching out the LTE network matched with described optional network information, then subscriber equipment is registered based on described LTE network; When not searching out the LTE network matched with described optional network information, then continue to read the optional network information of next priority in described SPLMN list and search for LTE network, until LTE network register or optional network information reading in described SPLMN list is complete.
Wherein, can also comprise: after described user terminal carries out LTE network registration, also comprise: if the PLMN of the LTE network of the current access of subscriber equipment is present in EHPLMN list, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is identical, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is of equal value, then the PLMN information of described LTE network is saved in described SPLMN list.
Wherein, the described PLMN information by described LTE network is saved in described SPLMN list, comprising: be added in described SPLMN list using the PLMN information of described LTE network as the optional network information of limit priority; And delete the optional network information of lowest priority in described SPLMN list.
On the other hand, present invention also offers a kind of network selection device, comprising: judge module, for when net searched by subscriber equipment, judge whether the registered PLMN RPLMN of described subscriber equipment can be registered as Long Term Evolution LTE network; First Registering modules, for when described judge module is judged to be, carries out LTE network registration by described RPLMN; Second Registering modules, for when described judge module is judged to be no, according to the optional network information search LTE network of the alternative public land mobile network SPLMN list storage pre-set, carries out LTE network registration; Wherein, described SPLMN list is for storing optional network information, and described optional network information is the information of the LTE network that described user equipment registration is crossed.
Wherein, when the wireless access type of described RPLMN is LTE network and the public land mobile network PLMN packets of information of RPLMN is contained in described SPLMN list, then described judge module judges that described RPLMN can be registered as LTE network.
Wherein, described second Registering modules, comprising: reading unit, for the priority order from high to low according to each optional network information in described SPLMN list, reads the optional network information in described SPLMN list; Search unit, for the described optional network information according to current reading, the LTE network that search and described optional network information match; Registering unit, for when searching out the LTE network matched with described optional network information, then subscriber equipment is registered based on described LTE network; When not searching out the LTE network matched with described optional network information, then reading unit continues to read the optional network information of next priority in described SPLMN list and searches for LTE network, until LTE network register or optional network information reading in described SPLMN list is complete.
Wherein, described device also comprises update module, PLMN for the LTE network when the current access of subscriber equipment is present in EHPLMN list, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is identical, and/or, if when the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is of equal value, then the PLMN information of described LTE network is saved in described SPLMN list.
Wherein, described update module comprises: adding device, for being added in described SPLMN list using the PLMN information of described LTE network as the optional network information of limit priority; And delete cells, for deleting the optional network information of lowest priority in described SPLMN list.
Beneficial effect of the present invention is as follows:
The mode that the present invention utilizes RPLMN and SPLMN of subscriber equipment to combine, makes the LTE network that user's equipment access priority is higher, improves the efficiency that net searched by subscriber equipment.
Accompanying drawing explanation
Fig. 1 is the overview flow chart of network selection method according to an embodiment of the invention;
Fig. 2 is the flow chart carrying out LTE network selection according to an embodiment of the invention according to SPLMN list;
Fig. 3 is according to an embodiment of the invention to the flow chart of the renewal of SPLMN list; And
Fig. 4 is the structure chart of network selection device according to an embodiment of the invention.
Embodiment
In order to the network selection mode solving prior art searches the inefficient problem of net, the invention provides a kind of network selection method and device, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, do not limit the present invention.
The present invention, by safeguarding an alternative PLMN list (SUGGESTED PLMN LIST, SPLMN) at the NAS layer (management level/Non-Access Stratum) of subscriber equipment (User Equipment, UE), realizes the preferential network selection of LTE.If subscriber equipment judges wireless access type (the RadioAccess Type of RPLMN, RAT) be not LTE network or RPLMN registration be the roaming network of LTE time, optional network information can be selected from SPLMN list to carry out searching net registration according to the rule preset.Can upgrade SPLMN list after succeeding in registration, back up with the LTE network registered subscriber equipment at every turn.
SPLMN list is the PLMN list safeguarded voluntarily by NAS layer to complete network resident fast.May be used for storing one or more optional network information in SPLMN list.The information of this optional network information registered LTE network before being subscriber equipment.Optional network information can comprise: the frequency that PLMNID, PLMN ID is corresponding and bandwidth.This PLMN ID is the code of PLMN, such as, be 46003,46011.Optional network information in SPLMN list has higher priority in four class PLMN.Such as: the PLMN in PLMN and the HPLMN list in EHPLMN list, can become the optional network information in SPLMN list.
Further, the quantity of the optional network information of SPLMN list maintenance can be fixed value, such as: quantity is 5.One or more optional network information of SPLMN list storage have priority, such as, the time sequencing determination priority of SPLMN list is entered according to optional network information, the optional network specific digit priority finally entering SPLMN list is the highest, and the optional network specific digit priority entering SPLMN list is the earliest minimum.The USIM that optional network information and subscriber equipment use is relevant.Subscriber equipment uses different usim cards, the LTE network of optional network information may be caused different, that is to say that the LTE network of first search is different, such as: the LTE network using the usim card first search operator A of operator A, the LTE network of the usim card first search operator B of operator B is used.So, need to mate SPLMN list according to usim card, otherwise after may causing changing usim card, subscriber equipment meeting priority of registration is to the LTE network of a roaming.
SPLMN list can be bound with the usim card of subscriber equipment, and names according to the IMSI of the usim card of subscriber equipment.After can obtaining the IMSI of usim card, name the SPLMN list of binding with this usim card for latter six that get IMSI.
Subscriber equipment uses SPLMN list to register LTE network, serves fast registration network, can reach again the preferential effect of LTE.
As shown in Figure 1, Fig. 1 is the overview flow chart of network selection method according to an embodiment of the invention.
Step S110, subscriber equipment initiates automatically to search net flow process.
Subscriber equipment can search net automatically, and this is automatically searched net and refers to that subscriber equipment is according to the rule set in advance, independently completes search and the selection of network.Wherein, subscriber equipment can be the equipment such as mobile phone, intelligent terminal, multimedia equipment, stream media equipment.
Subscriber equipment, when starting up, can read the configuration information of subscriber equipment, to realize the initial configuration to subscriber equipment.
Subscriber equipment can read pre-configured EHPLMN list and HPLMN list in USIM, for selecting network by user equipment is prepared.The PLMN ID of the PLMN of limit priority is stored, as 46011 in HPLMN list; Can store the PLMNID of HPLMN of equal value in EHPLMN list, such as, store 46003 and 46011, represent that 46003 networks are equivalent to 46011 networks of limit priority like this, 46003 networks and 46011 networks can be considered as approximately equal.
Further, subscriber equipment, by reading usim card, can obtain the IMSI of subscriber equipment, and latter six according to the IMSI of subscriber equipment obtain the SPLMN list of binding with usim card.Wherein, when first time obtains SPLMN list, this SPLMN list is empty.
After subscriber equipment is ready, after initialization configured, subscriber equipment has started to search net in order to access network.Further, specify according to 3GPP specification TS23.122, subscriber equipment can first read RPLMN information, judges whether the network of RPLMN meets the requirements.
Step S120, determines whether RPLMN meets LTE priority condition.If meet, perform step S130, if do not meet, perform step S140.
Comprise PLMN information at RPLMN, this PLMN information can comprise frequency corresponding to PLMN ID, PLMNID and bandwidth.
LTE priority condition refers to that the wireless access type (Radio AccessTechnology, RAT) of the RPLMN of subscriber equipment is LTE network and the PLMN information of RPLMN is identical with one of them optional network information in SPLMN list.Judge whether RPLMN meets LTE priority condition, judge whether the RPLMN of subscriber equipment can be registered as LTE network exactly.If RPLMN meets LTE priority condition, then judge that RPLMN can be registered as LTE network, enters step S130; If RPLMN does not meet LTE priority condition, then enter step S140.Wherein the wireless access type of RPLMN can be distinguished by PLMN ID.
Specifically, the NAS layer of subscriber equipment is for safeguarding, controlling the information relevant with subscriber equipment access network.The information relevant with subscriber equipment access network should can comprise EHPLMN list, HPLMN list, SPLMN list, RPLMN etc.Such as: can the information such as RPLMN be safeguarded at NAS layer, RPLMN be issued AS layer.The network registry of the information realization subscriber equipment that the AS layer (Access Layer) of subscriber equipment can issue according to NAS layer.Such as: AS layer receives the RPLMN information from NAS layer, then according to RPLMN information search network, the network registry of subscriber equipment can be realized.
When subscriber equipment initiates automatically to search net flow process, the network not necessarily LTE standard of RPLMN, and subscriber equipment requires LTE network priority of registration, therefore the RPLMN information that there is NAS layer directly can not be handed down to AS layer and carry out searching net by subscriber equipment, but can utilize the RPLMN information of subscriber equipment registration last time.Judge whether the RPLMN of subscriber equipment meets LTE priority condition, that is to say and judge subscriber equipment the last time networking (RPLMN) of registering whether as LTE standard, and judge the PLMN information that RPLMN comprises, whether the frequency that namely PLMN ID, PLMN ID are corresponding and bandwidth are included in SPLMN list.Just can directly utilize RPLMN to search net if RPLMN meets LTE priority condition, if do not meet LTE priority condition, then SPLMN list can be utilized to carry out searching net.
Step S130, carries out LTE network registration by RPLMN.
When judging that the RPLMN of subscriber equipment meets LTE priority condition, the cell synchronous of the RPLMN that can specify according to 3GPP specification TS23.122 and register flow path, perform the LTE network registration of subscriber equipment.
Which registration speed is the fastest, can not affect Consumer's Experience because of searching net overlong time, and which can ensure that subscriber equipment always can not go the registration PLMN of low priority or the LTE network of roaming.
Step S140, carries out LTE network selection according to SPLMN list and registers.
When the RPLMN of subscriber equipment does not meet LTE priority condition, then according to the optional network information search LTE network of SPLMN list storage, so that subscriber equipment can this LTE network of priority of registration.Wherein, the PLMN information of the optional network information in SPLMN list and RPLMN belongs to same class information, optional network information just in SPLMN list may not be the PLMN information of the last registration, may be upper last time or more early registered PLMN information, and the optional network information in SPLMN list is all LTE standard, but RPLMN can only remember the PLMN information of the last registration and this PLMN information not necessarily comprises LTE standard.
SPLMN list may be used for storing one or more optional network information with priority.When judging that the RPLMN of subscriber equipment does not meet LTE priority condition, can carry out in turn searching net according to the priority of each optional network information of SPLMN list storage.
As shown in Figure 2, Fig. 2 is the flow chart carrying out LTE network selection according to an embodiment of the invention according to SPLMN list.
Step S210, according to the priority order from high to low of each optional network information in SPLMN list, reads the optional network information in SPLMN list.
Step S220, according to the optional network information of current reading, the LTE network that search and this optional network information match.
Step S230, judges whether to search the LTE network matched with optional network information.
When LTE network can be searched according to the optional network information of current reading, then perform step S240.
When failing to search LTE network according to the optional network information of current reading, then return step S210.Continue next the priority optional network information reading the current alternative network information, the LTE network that search and low priority optional network information match, until LTE network register or optional network information reading in SPLMN list is complete.When the optional network information in SPLMN list reads complete, when also not searching LTE network, then terminate the flow process of carrying out LTE network selection according to SPLMN list, can carry out searching net and registering according to the priority orders of four class PLMN.
Step S240, when searching out the LTE network matched with this optional network information, then subscriber equipment is registered based on this LTE network.
Because, optional network information in SPLMN list obtains by LTE network registered before being recorded, so, utilize SPLMN list carry out web search can for subscriber equipment search fast net and registered network reference is provided, shorten the web search time of subscriber equipment.
Step S150, after user terminal is registered to LTE network, then according to predetermined Policy Updates SPLMN list.
This predetermined rule comprises, and upgrades SPLMN list and/or upgrade SPLMN list after user equipment registration to LTE network after subscriber equipment tracing section updating (Tracking Area Update, TAU) completes.
After user equipment registration completes to LTE network or TAU, the PLMN information according to the LTE network of user equipment registration upgrades SPLMN list.
Further, the PLMN in PLMN and the HPLMN list in EHPLMN list can be the member in SPLMN list.Specifically, if the PLMN of the LTE network of the current access of subscriber equipment is present in EHPLMN list, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is identical, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is of equal value, can think that LTE network that subscriber equipment accesses is equal with HPLMN priority or higher than the community of HPLMN priority, then the PLMN information of LTE network can be saved in SPLMN list as optional network information to upgrade SPLMN list, so that the follow-up network selection of subscriber equipment can with reference to this optional network information.
The flow process that user terminal upgrades SPLMN list is concrete as shown in Figure 3, and Fig. 3 is according to an embodiment of the invention to the flow chart of the renewal of SPLMN list.
Step S310, receives the signaling message from network side.
This signaling message can comprise: subscriber equipment overall network system has connected (Evolved PacketSystem(EPS) attach complete) message, subscriber equipment tracking area update complete (TAU complete) message.EPS attach complete can represent that subscriber equipment completes LTE network registration, has accessed this LTE network.Subscriber equipment TAU completes and can represent that subscriber equipment tracing section updating completes.
Further, after only having subscriber equipment to complete LTE network registration, just can carry out TAU, in other words, subscriber equipment first receives the EPS attach complete signaling message that LTE network side sends, and just can receive TAU complete signaling message.Such as: after subscriber equipment access LTE network, carrying out TAU when carrying out cell merge, at this moment could produce TAU complete signaling message.
Step S320, determines the type of the signaling message received.
When the signaling message received is EPS attach complete message, then perform step S340.
When the signaling message received is TAU complete message, then perform step S330.
Step S330, judges whether the PLMN of subscriber equipment changes.If so, then perform step S340, if not, then perform step S380.
The current PLMN information of subscriber equipment can be comprised in subscriber equipment TAU complete signaling message.PLMN after PLMN and TAU before subscriber equipment TAU can be compared, judge that subscriber equipment receives PLMN in TAU complete signaling message whether identical with the PLMN in last time TAU complete signaling message.That is, judge that whether the PLMN ID of the PLMN after PLMN ID with TAU of the PLMN before TAU is identical, if identical, then the PLMN of subscriber equipment does not change, and performs step S380; If not identical, then the PLMN of subscriber equipment changes, and performs step S340.
Step S340, judges whether the current PLMN of subscriber equipment belongs to EHPLMN.If so, then perform step S370, if not, then perform step S350.
According to the description in step S110, subscriber equipment can EHPLMN list in reading SIM card when starting up, thus learns the HPLMN list of pre-configured equivalence.Before renewal SPLMN list, need to judge whether the successful current PLMN of user equipment registration is present in EHPLMN list, if judge, current PLMN belongs to EHPLMN, that then determine that subscriber equipment selects is the PLMN of high priority, can to SPLMN list update, thus subscriber equipment can be avoided to be the PLMN of low priority subsequently through the PLMN that SPLMN list is registered.Further, can judge that whether the PLMN ID of the current PLMN of subscriber equipment is identical with the PLMN ID of the PLMN in EHPLMN list, if identical, represent that current PLMN belongs to EHPLMN, if different, then represent that current PLMN does not belong to EHPLMN.When judging that the current PLMN of subscriber equipment belongs to EHPLMN, namely in EHPLMN list, there is the PLMN identical with current PLMN, then perform step S370, otherwise perform step SS350.
Step S350, judges whether the current PLMN of subscriber equipment is HPLMN.If so, then perform step S370, if not, then perform step S360.
Another one judges that PLMN be the method for high priority PLMN is judge that this PLMN is HPLMN.
Specifically, according to the description in step S110, subscriber equipment can HPLMN list in reading SIM card when starting up, thus learns pre-configured HPLMN list.PLMN in current PLMN and the HPLMN list of subscriber equipment is compared, if there is the PLMN identical with current PLMN in HPLMN list, then performs step S370, otherwise perform step S360.Further, the PLMN ID of the PLMN in the PLMN ID of current PLMN and HPLMN list can be compared, if identical, then represent that current PLMN is HPLMN, if different, then represent that current PLMN is not HPLMN.
Step S360, judges that whether the current PLMN of subscriber equipment is of equal value with HPLMN.If it is step S370 is performed, if otherwise perform step S380.
The information of one or more PLMN of equivalent equivalence can be comprised in PLMN list of equal value.This equivalent representation is equal to, and such as: comprise PLMNA in EHPLMN, PLMNA PLMNB of equal value, then can be considered as PLMNB by the PLMNA in EHPLMN.The PLMN ID of the PLMN of this one or more equivalence can be contained in the list of subscriber equipment, as EHPLMN list, and HPLMN list etc.
When subscriber equipment is after LTE network has been registered, the whole EPS attach complete signaling message issued from LTE network side can be received; Subscriber equipment, after TAU completes, can receive the TAU complete signaling message issued from LTE network side.PLMN list message of equal value can be configured in EPS attach complete signaling message and TAUcomplete signaling message.Subscriber equipment can store this PLMN list of equal value.Further, due to subscriber equipment upper once complete registration or on once complete TAU after, store the PLMN list of equal value that network side issues, so when subscriber equipment, this has been registered or after TAU completes, the PLMN list of equal value that this can be received substitutes the last PLMN list of equal value stored.By such mode, network side can inform that each PLMN in subscriber equipment PLMN list of equal value is equivalent equivalence.
Further, if do not configure EHPLMN list in SIM card, and current PLMN is not HPLMN, then the PLMN list of equal value that can only issue according to network side judges whether to need to upgrade SPLMN.After subscriber equipment completes network registry, PLMN list of equal value is handed down to subscriber equipment by network side, if now judge that PLMN and HPLMN of user equipment registration is of equal value, then what think user equipment registration is high-priority network.
When current PLMN and the HPLMN of subscriber equipment is of equal value, then perform step S370, otherwise perform step S380.
Step S370, upgrades SPLMN list.The information of current PLMN is added to the limit priority position in SPLMN list, delete the information of the PLMN of lowest priority position.
Specify according to 3GPP specification TS23.122, the PLMN priority that the community of the up-to-date registration of subscriber equipment is corresponding is the highest, so will the PLMN information added be needed to be placed on priority the highest position time the update mode of SPLMN list is each renewal.
The quantity of the optional network information in SPLMN list is fixed.The PLMN information of the LTE network that subscriber equipment can be accessed upgrades described SPLMN list as optional network information.Specifically, the optional network information of the PLMN information of LTE network as limit priority can be added in SPLMN list, and delete the optional network information of lowest priority in SPLMN list.Constant to guarantee the optional network information quantity in SPLMN list.Such as: in SPLMN list, comprise optional network information A, B, C, the priority of optional network information reduces successively from A to C.When needs D done optional network information add in SPLMN list time, then can using D as the highest optional network information of priority, delete the C that priority is minimum, obtain the SPLMN list upgraded, optional network information in the SPLMN list of this renewal is D, A, B, and the priority of optional network information reduces successively from D to B.
Step S380, SPLMN list does not upgrade.
The PLMN of the LTE network of the current access of subscriber equipment is not present in EHPLMN list, PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is not identical and PLMN non-equivalence in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment, what then can think the current registration of subscriber equipment is LTE network or the roaming network of low priority, this does not upgrade SPLMN list.
According to said method, present invention also offers a kind of network selection device.As shown in Figure 4, Fig. 4 is the structure chart of network selection device 400 according to an embodiment of the invention.
This device 400 can comprise: determination module 410 may be used for when net searched by subscriber equipment, judges whether the registered PLMN RPLMN of subscriber equipment can be registered as Long Term Evolution LTE network.When the wireless access type of RPLMN is LTE network and the public land mobile network PLMN packets of information of RPLMN is contained in SPLMN list, then judge module 410 judges that RPLMN can be registered as LTE network.
First Registering modules 420, for when judge module 410 is judged to be, carries out LTE network registration by RPLMN;
Second Registering modules 430, for when described judge module 410 is judged to be no, according to the optional network information search LTE network of the alternative public land mobile network SPLMN list storage pre-set, carries out LTE network registration; Wherein, SPLMN list is for storing optional network information, and optional network information is the information of the LTE network that user equipment registration is crossed.
Second Registering modules 430 can comprise: reading unit 431, for the priority order from high to low according to each optional network information in SPLMN list, reads the optional network information in SPLMN list; Search unit 432, for the optional network information according to current reading, the LTE network that search and optional network information match; Registering unit 433, for when searching out the LTE network matched with optional network information, then subscriber equipment is registered based on LTE network; When not searching out the LTE network matched with optional network information, the optional network information that then reading unit continues to read next priority in SPLMN list searches for LTE network, until LTE network register or optional network information reading in SPLMN list is complete.
Device 400 can also comprise update module 440 and may be used for after user terminal priority of registration optional network specific digit, also comprise renewal SPLMN list.
Update module 440 is present in EHPLMN list for the PLMN of the LTE network when the current access of subscriber equipment, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is identical, and/or, if when the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is of equal value, then the PLMN information of LTE network is saved in SPLMN list.
Further, update module 440 can comprise: adding device 441 may be used for the PLMN information of LTE network to be added in SPLMN list as the optional network information of limit priority; And delete cells 442 may be used for the optional network information deleting lowest priority in SPLMN list.
The function realized due to the device of the present embodiment is substantially corresponding to the embodiment of the method shown in earlier figures 1 to Fig. 3, therefore not detailed part in the description of the present embodiment, see the related description in previous embodiment, can not repeat at this.
Although be example object, disclose the preferred embodiments of the present invention, it is also possible for those skilled in the art will recognize various improvement, increase and replacement, and therefore, scope of the present invention should be not limited to above-described embodiment.
Claims (10)
1. a network selection method, is characterized in that, comprising:
When net searched by subscriber equipment, judge whether the registered PLMN RPLMN of described subscriber equipment can be registered as Long Term Evolution LTE network; If so, then LTE network registration is carried out by described RPLMN; If not, then according to the optional network information search LTE network of the alternative public land mobile network SPLMN list storage pre-set, LTE network registration is carried out; Wherein, described SPLMN list is for storing optional network information, and described optional network information is the information of the LTE network that described user equipment registration is crossed.
2. the method for claim 1, is characterized in that,
When the wireless access type of described RPLMN is LTE network and the public land mobile network PLMN packets of information of RPLMN is contained in described SPLMN list, then judge that described RPLMN can be registered as LTE network.
3. method as claimed in claim 1 or 2, is characterized in that, according to the optional network information search LTE network of SPLMN list storage, carries out LTE network registration, specifically comprises:
According to the priority order from high to low of each optional network information in described SPLMN list, read the optional network information in described SPLMN list;
According to the described optional network information of current reading, the LTE network that search and described optional network information match;
When searching out the LTE network matched with described optional network information, then subscriber equipment is registered based on described LTE network;
When not searching out the LTE network matched with described optional network information, then continue to read the optional network information of next priority in described SPLMN list and search for LTE network, until LTE network register or optional network information reading in described SPLMN list is complete.
4. the method for claim 1, is characterized in that, also comprises: after described user terminal carries out LTE network registration, also comprise:
If the PLMN of the LTE network of the current access of subscriber equipment is present in EHPLMN list, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is identical, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is of equal value, then the PLMN information of described LTE network is saved in described SPLMN list.
5. method as claimed in claim 4, it is characterized in that, the described PLMN information by described LTE network is saved in described SPLMN list, comprising:
The PLMN information of described LTE network is added in described SPLMN list as the optional network information of limit priority; And
Delete the optional network information of lowest priority in described SPLMN list.
6. a network selection device, is characterized in that, comprising:
Judge module, for when net searched by subscriber equipment, judges whether the registered PLMN RPLMN of described subscriber equipment can be registered as Long Term Evolution LTE network;
First Registering modules, for when described judge module is judged to be, carries out LTE network registration by described RPLMN;
Second Registering modules, for when described judge module is judged to be no, according to the optional network information search LTE network of the alternative public land mobile network SPLMN list storage pre-set, carries out LTE network registration; Wherein, described SPLMN list is for storing optional network information, and described optional network information is the information of the LTE network that described user equipment registration is crossed.
7. device as claimed in claim 6, is characterized in that:
When the wireless access type of described RPLMN is LTE network and the public land mobile network PLMN packets of information of RPLMN is contained in described SPLMN list, described judge module judges that described RPLMN can be registered as LTE network.
8. device as claimed in claims 6 or 7, it is characterized in that, described second Registering modules, comprising:
Reading unit, for the priority order from high to low according to each optional network information in described SPLMN list, reads the optional network information in described SPLMN list;
Search unit, for the described optional network information according to current reading, the LTE network that search and described optional network information match;
Registering unit, for when searching out the LTE network matched with described optional network information, then subscriber equipment is registered based on described LTE network; When not searching out the LTE network matched with described optional network information, then reading unit continues to read the optional network information of next priority in described SPLMN list and searches for LTE network, until LTE network register or optional network information reading in described SPLMN list is complete.
9. device as claimed in claim 6, it is characterized in that, described device also comprises:
Update module, PLMN for the LTE network when the current access of subscriber equipment is present in EHPLMN list, and/or, if the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is identical, and/or, if when the PLMN in PLMN and the HPLMN list of the LTE network of the current access of subscriber equipment is of equal value, the PLMN information of described LTE network is saved in described SPLMN list.
10. device as claimed in claim 9, it is characterized in that, described update module comprises:
Adding device, for being added in described SPLMN list using the PLMN information of described LTE network as the optional network information of limit priority; And
Delete cells, for deleting the optional network information of lowest priority in described SPLMN list.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410019816.9A CN104796962B (en) | 2014-01-16 | 2014-01-16 | Network selection method and device |
| PCT/CN2014/079092 WO2015106525A1 (en) | 2014-01-16 | 2014-06-03 | Network selection method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410019816.9A CN104796962B (en) | 2014-01-16 | 2014-01-16 | Network selection method and device |
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| CN104796962A true CN104796962A (en) | 2015-07-22 |
| CN104796962B CN104796962B (en) | 2020-06-05 |
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| CN201410019816.9A Active CN104796962B (en) | 2014-01-16 | 2014-01-16 | Network selection method and device |
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| Publication number | Publication date |
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| WO2015106525A1 (en) | 2015-07-23 |
| CN104796962B (en) | 2020-06-05 |
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