CN103298071B - A kind of method of automatically evading the little operator of CDMA - Google Patents
A kind of method of automatically evading the little operator of CDMA Download PDFInfo
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- CN103298071B CN103298071B CN201310222123.5A CN201310222123A CN103298071B CN 103298071 B CN103298071 B CN 103298071B CN 201310222123 A CN201310222123 A CN 201310222123A CN 103298071 B CN103298071 B CN 103298071B
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Abstract
The invention discloses a kind of method of automatically evading the little operator of CDMA, relate to moving communicating field.Described method comprises: S1, CDMA starting up of terminal, carries out searching net according to the frequency in this terminal PRL file acquisition table; S2, from Search Results, choose a network, resolve the SID of its pilot channel; S3, step S2 gained SID to be mated with the system table of described PRL file, if this SID is present in the system table of described PRL file, then enters step S4, otherwise return step S2, continue to resolve the next network in Search Results; S4, step S2 gained SID to be mated with the SID aggregate list of described terminal preset, if this SID is present in the SID aggregate list of described terminal preset, then enter step S5, otherwise return step S2, continue to resolve the next network in Search Results; S5, log in cdma network corresponding to this SID.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of method of automatically evading the little operator of CDMA.
Background technology
CDMA terminal carries out web search according to optimum roaming list (PreferredRoamingList, PRL).PRL file is the Parameter File be stored on UIM card, is created, and upgraded by operator by operator, is unreadable concerning PRL file user.PRL file mainly comprises acquisition table (AcquisitionTable) and system table (SystemTable) two table, the index of acquisition table mainly all channels that will search, namely its each entry is the description to certain specific wireless environment.System table is then the index to certain concrete system, and its existing way is the mode that system identification number/network identification mark (SID/NID) is right.
If PRL file adopts the mode of asterisk wildcard, then terminal can search a lot of disabled CDMA signal (mainly refer to and do not sign roaming agreement between terminal operator and this cdma network operator), these CDMA signals belong to some small-scale CDMA operators usually, i.e. the little operator of CDMA.When these disabled CDMA signals of terminal logon attempt, if these networks belonging to CDMA signal do not refuse the registration of terminal, then terminal can log in smoothly.Operator belonging to terminal operator and these cdma networks does not have roaming agreement, then the phenomenon of little operator attachment can occur, and namely the network signal of terminal demonstration is fine, but all communication traffics all cannot use.Search the impact of net mechanism by CDMA, terminal can not initiatively depart from these cdma networks, and terminal use can only depart from these by repeated switching or the way leaving legacy network overlay area and can not use, but the cdma network that can log in.
The reason of CDMA user's (part is signing, and part is not contracted) mistake network selection under Multi net voting roaming scence is caused to mainly contain three: (1) PRL file does not accurately record roaming network information, in the SID field of main frequency, employ asterisk wildcard; (2) terminal is after non-signing roaming network failed authentication, and due to the deficiency of CDMA standard, network does not send refuse information to terminal, thus makes terminal be attached to network always; (3) the undefined manual network selection operation of CDMA terminal, after terminal adheres to non-subscription network, user cannot carry out manual switching.
Based on above reason, corresponding resolving ideas has three: (1) introduces the manual network selection mechanism of class GSM, but this mechanism be not suitable for cdma system, because CDMA signal is synchronous comparatively slow, do not meet engineer applied; (2) upgrade of network supports that refuse information issues, and problem comes from and use asterisk wildcard in PRL file, and most of operator does not have this problem, so there is no the network that power is roamer's complete upgrading oneself; (3) PRL information is increased, this implements very difficult, the PRL file size of external main flow cdma network operator is at 9KB ~ 16KB, PRL information on domestic commercial UIM only has 1KB, if capacity increases to about 9KB, network selection information is enough accurate, but can bring two problems: 1. also not all terminal is all supported; 2. under existing PRL note update mechanism (unrealized variable update), upgrade about a PRL needs 70 notes, success rate and user perceptibility are all very low, the OTASP that other update mechanisms use as machine card integrated terminal is not also suitable for domestic separation between machine and card terminal, and BIP (BearerIndependentProtocol) mechanism based on USIM is also difficult to realize in a short time.When the invention provides a kind of PRL file in CDMA terminal use asterisk wildcard, active dodge logs in the method for not spendable cdma network.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: how to provide a kind of when CDMA terminal uses the PRL file of asterisk wildcard, active dodge logs in the method for not spendable cdma network.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of method of automatically evading the little operator of CDMA, the method comprises the following steps:
S1, CDMA starting up of terminal, carries out web search according to the frequency in the acquisition table of the optimum roaming list PRL of this terminal;
S2, CDMA terminal chooses a network from Search Results, resolves the system identification SID in its pilot channel;
S3, step S2 gained SID to be mated with the system table of the PRL file of described terminal, if this SID is present in the system table of described terminal PRL file, then enter step S4, otherwise return step S2, continue to resolve the next network in Search Results;
S4, step S2 gained SID to be mated with the SID aggregate list of described terminal preset, if this SID is present in the SID aggregate list of described terminal preset, then enter step S5, otherwise return step S2, continue to resolve the next network in Search Results;
S5, log in cdma network corresponding to this SID.
Information in the system table of described PRL file stores with the form of asterisk wildcard.
Described SID aggregate list comprises described terminal operator and signs the SID information of roaming agreement operator with this operator.
Described SID aggregate list is stored in the memory module of described CDMA terminal.
(3) beneficial effect
The invention provides a kind of method of automatically evading the little operator of CDMA, when the PRL file of CDMA terminal uses asterisk wildcard, by comprising the SID aggregate list of the SID information of terminal operator and all same terminal operator signing roaming agreement suppliers in CDMA terminal preset, when making CDMA terminal carry out web search, resolve the SID information of the network searched, if this SID mates with the system table of described terminal PRL file and mates with SID aggregate list, then log in this network, otherwise do not log in this network, reach the effect of automatically evading not spendable cdma network.
Accompanying drawing explanation
Fig. 1 is the flow chart automatically evading the method for the little operator of CDMA that the present invention proposes;
Fig. 2 is a kind of execution mode flow chart automatically evading the method for the little operator of CDMA proposed according to the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
CDMA terminal needs use SID list collection, in this SID list collection, and operable SID under including all roaming conditions, i.e. terminal operator and be signed with the SID list of CDMA operator of roaming agreement with terminal operator.When terminal carries out searching net according to PRL file, if find a frequency to use, so need to check that SID numbers in its channel, if its SID is available, then log in, otherwise just find the next one.Thus ensure that all cdma networks that can log in are operable cdma network, reach the object of automatically evading the little operator of CDMA.CDMA terminal mainly comprises Anneta module, radio-frequency module, baseband module, memory module and UIM card.
Fig. 1 is the flow chart automatically evading the method for the little operator of CDMA that the present invention proposes, and comprises the following steps:
S1, CDMA starting up of terminal, carries out web search according to the frequency in the acquisition table of the optimum roaming list PRL of this terminal;
S2, CDMA terminal chooses a network from Search Results, resolves the system identification SID in its pilot channel;
S3, step S2 gained SID to be mated with the system table of the PRL file of described terminal, if this SID is present in the system table of described terminal PRL file, then enter step S4, otherwise return step S2, continue to resolve the next network in Search Results;
S4, step S2 gained SID to be mated with the SID aggregate list of described terminal preset, if this SID is present in the SID aggregate list of described terminal preset, then enter step S5, otherwise return step S2, continue to resolve the next network in Search Results;
S5, log in cdma network corresponding to this SID.
Fig. 2 is a kind of execution mode flow chart automatically evading the method for the little operator of CDMA proposed according to the present invention, comprises the following steps:
Step 1, be preset in the memory module of this terminal by comprising all SID aggregate list being signed with the cdma network operator of roaming agreement with CDMA terminal operator;
Step 2, described starting up of terminal, the baseband module of terminal reads the PRL file in described terminal UIM card, carries out web search according to the frequency in the acquisition table of PRL file;
The baseband module of step 3, described terminal reads the SID aggregate list in described terminal storage module;
Step 4, described terminal carry out web search according to the frequency in its PRL file acquisition table;
Step 5, from Search Results, choose a network, the baseband module of described terminal resolves the system identification SID in this network pilot channel;
Step 6, the system table of SID and PRL file step 5 obtained mate, if this SID is present in the system table of described terminal PRL file, then enter step 7; Otherwise return step 5, continue to resolve the next network in Search Results;
Step 7, step 5 gained SID to be mated with the SID aggregate list of terminal preset, if this SID is present in SID aggregate list, then enter step 8, otherwise return step 5, continue to resolve the next network in Search Results;
Step 8, log in cdma network corresponding to this SID.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (3)
1. automatically evade a method for the little operator of CDMA, it is characterized in that, the method comprises:
S1, CDMA starting up of terminal, carries out web search according to the frequency in the acquisition table of the optimum roaming list PRL of this terminal;
S2, CDMA terminal chooses a network from Search Results, resolves the system identification SID in its pilot channel;
S3, step S2 gained SID to be mated with the system table of the PRL file of described terminal, if this SID is present in the system table of described terminal PRL file, then enter step S4, otherwise return step S2, continue to resolve the next network in Search Results;
S4, all SID aggregate list being signed with the cdma network operator of roaming agreement with CDMA terminal operator that comprises of step S2 gained SID and described terminal preset to be mated, if this SID is present in the SID aggregate list of described terminal preset, then enter step S5, otherwise return step S2, continue to resolve the next network in Search Results;
S5, log in cdma network corresponding to this SID.
2. the method for claim 1, is characterized in that, the information in the system table of described PRL file stores with the form of asterisk wildcard.
3. the method for claim 1, is characterized in that, described SID aggregate list is stored in the memory module of described CDMA terminal.
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| CN201310222123.5A CN103298071B (en) | 2013-06-05 | 2013-06-05 | A kind of method of automatically evading the little operator of CDMA |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101040551A (en) * | 2004-10-13 | 2007-09-19 | 摩托罗拉公司 | Using an enhanced preferred roaming list in a terminal device |
| CN102197684A (en) * | 2008-10-22 | 2011-09-21 | 高通股份有限公司 | Methods and apparatus for system selection in a multimode wireless device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101040551A (en) * | 2004-10-13 | 2007-09-19 | 摩托罗拉公司 | Using an enhanced preferred roaming list in a terminal device |
| CN102197684A (en) * | 2008-10-22 | 2011-09-21 | 高通股份有限公司 | Methods and apparatus for system selection in a multimode wireless device |
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