CN1728876A - Method for selecting networks from a terminal in CDMA system - Google Patents
Method for selecting networks from a terminal in CDMA system Download PDFInfo
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- CN1728876A CN1728876A CN 200410071787 CN200410071787A CN1728876A CN 1728876 A CN1728876 A CN 1728876A CN 200410071787 CN200410071787 CN 200410071787 CN 200410071787 A CN200410071787 A CN 200410071787A CN 1728876 A CN1728876 A CN 1728876A
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Abstract
International roaming optimized list of packet switched service is added to terminal in order to record priorities of CDMA networks, which are related to the said terminal home network through roaming protocol of packet switched service. Based on sequence of network priorities in international roaming optimized list of circuit switching service and international roaming optimized list of packet switched service. The method selects access network so as to make terminal supported by packet switched service develop packet switched service successfully.
Description
Technical field
The present invention relates to the mobile communication technology field, especially relate to the technology of selecting network in the mobile communication system.
Background technology
The mobile subscriber roams between the mobile network of country variant or different operators, has been unusual general phenomenon for current mobile network.Along with increasingly sharpening of global population mobility, a plurality of mobile operator of country variant or same country need sign roaming agreement, so that the mobile subscriber who belongs to oneself as far as possible in the whole world most areas can both enjoy mobile service, thereby improve the competitiveness of operator self.
In recent years, cdma network operator is gradually from the early stage circuit switching (CircuitSwitching that only provides, CS) Ye Wu CDMA IS-95, promptly the narrowband CDMA network evolves to the cdmalX network successively, to satisfy ever-increasing voice and packet data service demand.The cdmalX network is divided into circuit domain and packet domain, and CS is provided respectively professional and packet switching (Packet Switching, PS) business.Because cdmalX and CDMA IS-95's is better compatible, the overwhelming majority has had the operation commercial city of CDMA IS-95 network that legacy network is upgraded and the mode that increases packet domain equipment evolves to the cdmalX network, only provides the evolution of the network of CS business to become the network of CS business and PS business can be provided thereby make.Because networking is asynchronous, the roaming agreement of signing between the mobile operator is also respectively at CS business and PS business.Thereby cause a certain mobile operator after CDMA IS-95 network builds up, sign CS service roaming agreement with a plurality of mobile operator, after building up on the cdmalX network, sign PS service roaming agreement with a plurality of mobile operator again, the operator that signs CS service roaming agreement with same mobile operator is likely different with the operator that signs PS service roaming agreement, because operator builds the asynchronism(-nization) step of cdmalX Packet Based Network, perhaps some operator only builds Packet Based Network.
When the area of mobile terminal roaming outside the home network, there is the process of network selecting, promptly terminal selects certain network to initiate to insert request, and finally inserts this network.Network selecting has two kinds of patterns: automatic mode and manual mode.Automatic mode refers to user terminal according to the network preference lists set forth of preserving in the terminal, and according to the network signal quality that terminal receives, selects the network of limit priority.Manual mode refers to that user terminal is linked into certain network that the user initiatively selects, and the general user checks the current network that reaches by certain menu on the terminal or button, manually selects one of them then.
In the cdma system, terminal according to system banner (System Identity, SID) and network identity (Network Identity NID) judges whether to take place netsurfing.SID length is 15 bits, it is the number of unique identification mobile service local network in the CDMA mobile network by International Telecommunication Association management, NID length is that 16 bits are the network identities under certain SID, distribute voluntarily by operator, 0 and 65535 keep, 0 as being illustrated in those base stations that do not belong to specific NID district in certain SID district, and 65535 as represent that the mobile subscriber can roam in whole SID district.
If terminal works is under the automatic network access module, when starting up of terminal or current place network become unreachablely, or at interval during certain hour, terminal is automatic search network, and selects a suitable networks to insert.Consider that terminal under roaming condition, may search the signal of a plurality of networks of accesses network, but some network and this user's home network is not signed roaming agreement, then do not allow this terminal to insert.If terminal is understood the network which has signed roaming agreement in advance, then can improve the efficient that network selecting inserts.
Preserve the SID (and NID) of home network in the terminal, also preserve the international roaming preference lists simultaneously, this terminal of storage allows the network SID (and NID) of roaming in the tabulation, because NID is that each operator distributes voluntarily under the SID, does not generally need NID in the international roaming preference lists.For the terminal of separation between machine and card, these information are kept in the smart card, and terminal reads the preservation information in the card when needed.
When terminal works under the automatic network access module, judge at first whether home network can reach, if home network can reach, access belonging network then; If home network is unreachable, then use the international roaming preference lists, according to the priority of determining that can reach network, initiate to insert request to network one by one from high to low, until successful access network.The flow process that the terminal automatic network inserts as shown in Figure 1, concrete steps are as follows:
(1) terminal detects current mobile network signals, and judges the accessibility of network;
(2) whether the terminal judges home network can reach, if, access belonging network then, process ends; If not, continue following steps;
(3) terminal reads and uses the international roaming preference lists earlier, and the current network that reaches is carried out prioritization;
(4) terminal judges whether exist can reach and still do not tried into network, if continue step 5; If not, access failure, process ends;
(5) terminal initiates to insert request to the network that does not carry out access attempts as yet of limit priority;
(6) whether the terminal judges access is successful, if, process ends; If not, return step 4.
Illustrate and how to use the international roaming preference lists and carry out network priority ordering: the international roaming preference lists is: B, C, A, if terminal detects and can reach network A, B, C, D, E are arranged, then its prioritization is: B, C, A, D, E, or B, C, A, E, D.For the network that does not belong in the tabulation, its priority can be random.Also there is another kind of processing mode in terminal, only belongs to network in the tabulation and just allows roaming, and the network terminal that does not allow to roam is not carried out access attempts, then above-mentioned reach have only A, B in the network, C allows to roam, its priority is: B, C, A.
Because CDMA IS-95 network is only supported the CS business, the international roaming preference lists in the terminal is only at the CS business at present.Along with the appearance of the cdmalX network of supporting CS business and PS business in recent years, inevitably, the roaming agreement quantity that the PS business is reached is compared the professional much less of CS.And the order that PS service roaming agreement is signed not necessarily is consistent with the international roaming preference lists.
The current network selection course will cause roaming terminal to select a network, and this network and home network have only CS service roaming agreement, do not have PS service roaming agreement, and have other to sign reached at the network of PS service roaming agreement simultaneously.Terminal is before attempt initiating the PS business in this case, and can the user will not know obtain the PS business, PS service fail at this moment, but terminal still remains in the network of only supporting the CS business of current selection.Another kind of situation is, do not have home network whether to support the information of PS business in the terminal at present,, have another network of PS service roaming agreement can reach yet and exist simultaneously with home network if home network is not supported the PS business, at this moment terminal can only be selected home network, only supports the CS business.
Under the current network selection technology, the user can only utilize the manual network preference pattern by understanding operator's name that the roaming country of PS service roaming agreement is arranged with home network, selects the network of this operator.This mode is too complicated, impracticable for many users.Consider the increasingly extensive application of PS business, if the automatic network selection course of portable terminal is not considered the network priority at the PS business, the roamer can not select and insert the network of suitable support PS professional ability, will bring very big influence to carrying out of PS business.
Summary of the invention
The objective of the invention is to propose the method for selecting network in a kind of cdma system, by the professional international roaming preference lists of the PS that in terminal, increases operator's definition, the newly-increased tabulation of terminal applies is selected and is inserted suitable reached at network, supports the terminal of PS business can carry out the PS business smoothly thereby make.
For this reason, the present invention adopts following scheme:
The method of selecting network in a kind of cdma system, in terminal, increase packet switching service international roaming preference lists, record and described terminal attaching network have the priority of the cdma network of packet switching service roaming agreement, and described terminal is selected access network in proper order according to the network priority in circuit-switched service international roaming preference lists and two tabulations of packet switching service international roaming preference lists.
In described terminal, also increase the information whether its home network supports packet switching service.
The system banner that in the described packet switching service international roaming preference lists is cdma network is arranged in descending order according to network priority.
Also comprise network identity and network frequency point information in the described packet switching service international roaming preference lists.
If a described terminal support circuit switched service, application packet reciprocal exchange of business international roaming preference lists not, described terminal is only selected network insertion according to its circuit-switched service international roaming preference lists.
If described terminal is only supported packet switching service, application circuit reciprocal exchange of business international roaming preference lists not, described terminal is only according to its packet switching service international roaming preference lists and the network insertion of home network Information Selection.
Described terminal is only carried out access attempts to the network in circuit-switched service international roaming preference lists or the packet switching service international roaming preference lists.
Described terminal is carried out access attempts to all-network, but the priority of the network in circuit-switched service international roaming preference lists or packet switching service international roaming preference lists is not lower than network priority in circuit-switched service international roaming preference lists or packet switching service international roaming preference lists.
The cdma network that The present invention be directed to the PS business selects to strengthen mechanism, by the professional international roaming preference lists of the PS that increases operator's definition in terminal, and increases the information whether home network supports the PS business.Terminal applies newly-increased tabulation and Information Selection also insert suitable reached at network, support the terminal of PS business can carry out the PS business smoothly thereby make.
Description of drawings
Fig. 1 is the network selecting access process figure under the terminal automatic mode in the prior art;
Fig. 2 is the network selecting access process figure that only supports the terminal of PS business among the present invention;
Fig. 3 is the network selecting access process figure that supports the terminal of CS and PS business among the present invention.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described.
Increase the professional international roaming preference lists of PS in terminal, this tabulation is write down the cdma network priority that PS service roaming agreement is arranged with home network by operator's definition.Simultaneously, increase the information whether home network supports the PS business in the terminal, also its home network can be placed on unified selection the in the professional international roaming preference lists of PS.Support the newly-increased tabulation of terminal applies and the Information Selection suitable networks of PS business to insert, so that terminal is used the PS business.
The professional international roaming preference lists of PS, in full accord with original international roaming preference lists on form, comprise SID (and NID) information and network frequency point information.SID from high to low sequence arrangement according to priority in the tabulation.
Terminal has two kinds of processing modes when using international roaming preference lists and PS business international roaming preference lists: (1) has only the network of SID correspondence in the tabulation to allow roaming, and terminal is not carried out access attempts to other network; (2) network that is not included in the SID correspondence in the tabulation also may allow roaming, and just priority is lower than the network of the SID correspondence in the tabulation, and terminal is also carried out access attempts to other network.
For dissimilar terminals, its application to professional international roaming preference lists of newly-increased PS and home network information is different.Explanation respectively below:
(1) only supports the terminal of CS business
To only supporting the terminal of CS business, whether professional international roaming preference lists of then newly-increased PS and home network support that the PS business information is inoperative.Terminal still inserts according to original network selecting flow process, promptly earlier judges whether home network can reach, and Ruo Keda is access belonging network then; If home network is unreachable, then use existing international roaming preference lists at the CS business, the detected network that reaches of terminal is carried out prioritization, terminal is initiated access attempts one by one according to reaching network priority, until inserting certain network, or all can reach network insertion and all fail.
(2) only support the terminal of PS business
To only supporting the terminal of PS business, then existing international roaming preference lists at the CS business is inoperative.Terminal earlier judges whether home network can reach and support the PS business, if, access belonging network then; If not, then use the professional international roaming preference lists of PS, the detected network that reaches of terminal is carried out prioritization, terminal is initiated access attempts one by one according to reaching network priority, and until inserting certain network, or all can reach network insertion and all fail.Its flow process as shown in Figure 2.
(3) terminal of support CS business and PS business
Support the network selecting access procedure of the terminal of CS business and PS business, similar with the network selecting access procedure of the terminal of only supporting the PS business, difference only is: the latter uses the professional international roaming preference lists of PS, and the current network that reaches is carried out prioritization; The former uses the international roaming preference lists and the professional international roaming preference lists of PS of professional at CS respectively and PS business, and the current network that reaches is carried out prioritization.Its flow process as shown in Figure 3.
Consider along with CDMA IS-95 network to the cdmalX network development, except a part is only supported the data terminal of PS business, most terminals all will be supported the professional and PS business of CS simultaneously.For the benefit of this Terminal Type can select to support the network of CS business and PS business automatically, operator is when defining at international roaming preference lists and PS business international roaming preference lists, for having signed the accesses network of the professional and PS service roaming agreement of CS, need keep the consistency of two priorities in the tabulation as far as possible with home network.For only signing CS service roaming agreement, or only sign the accesses network of PS service roaming agreement, then its priority can be any.Be exemplified below: international roaming preference lists (at the CS business) is: A, B, C, D; The professional international roaming preference lists of PS is: E, C, D, F; If the detected network that reaches of terminal has: A, B, C, D, E, F, G, then its prioritization should be C, D, but the priority randomize of back.
The professional international roaming preference lists of the international roaming preference lists of different user and PS can be different, and to having opened the user of CS business and PS business, the professional international roaming preference lists of international roaming preference lists and PS just simultaneously effectively; To only opening the user of CS business, the professional international roaming preference lists of PS can be sky; To only opening the user of CS business, the international roaming preference lists can be sky.Simultaneously, the user needs extra applicant country internet roaming authority, and may need SEPARATE APPLICATION to the roaming of country variant.At this moment, operator just need carry out the renewal of international roaming preference lists and the professional international roaming preference lists of PS at particular user.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
- The method of selecting network in 1 one kinds of cdma systems, it is characterized in that: in terminal, increase packet switching service international roaming preference lists, record and described terminal attaching network have the priority of the cdma network of packet switching service roaming agreement, and described terminal is selected access network in proper order according to the network priority in circuit-switched service international roaming preference lists and two tabulations of packet switching service international roaming preference lists.
- 2 the method for claim 1 is characterized in that: also increase the information whether its home network supports packet switching service in described terminal.
- 3 the method for claim 1 is characterized in that: the system banner that in the described packet switching service international roaming preference lists is cdma network is arranged in descending order according to network priority.
- 4 methods as claimed in claim 3 is characterized in that: also comprise network identity and network frequency point information in the described packet switching service international roaming preference lists.
- 5 as claim 1,3 or 4 described methods, it is characterized in that: if a described terminal support circuit switched service, described terminal is only selected network insertion according to its circuit-switched service international roaming preference lists.
- 6 as claim 1,3 or 4 described methods, it is characterized in that: if described terminal is only supported packet switching service, described terminal is only according to its packet switching service international roaming preference lists and the network insertion of home network Information Selection.
- 7 as claim 1,3 or 4 described methods, it is characterized in that: described terminal is only carried out access attempts to the network in circuit-switched service international roaming preference lists or the packet switching service international roaming preference lists.
- 8 methods as claimed in claim 7, it is characterized in that: described terminal is carried out access attempts to all-network, but the priority of the network in circuit-switched service international roaming preference lists or packet switching service international roaming preference lists is not lower than network priority in circuit-switched service international roaming preference lists or packet switching service international roaming preference lists.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100717877A CN100407855C (en) | 2004-07-28 | 2004-07-28 | Method for selecting networks from a terminal in CDMA system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004100717877A CN100407855C (en) | 2004-07-28 | 2004-07-28 | Method for selecting networks from a terminal in CDMA system |
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| CN1728876A true CN1728876A (en) | 2006-02-01 |
| CN100407855C CN100407855C (en) | 2008-07-30 |
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| CN2004100717877A Expired - Fee Related CN100407855C (en) | 2004-07-28 | 2004-07-28 | Method for selecting networks from a terminal in CDMA system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101415173A (en) * | 2007-08-09 | 2009-04-22 | 华为技术有限公司 | Method for searching look-in service provider, as well as terminal and server |
| WO2009127101A1 (en) * | 2008-04-17 | 2009-10-22 | 中兴通讯股份有限公司 | A method for automatically selecting network and a terminal thereof |
| WO2009149667A1 (en) * | 2008-06-13 | 2009-12-17 | 华为技术有限公司 | Method, device and system for accessing the called |
| WO2011054268A1 (en) * | 2009-11-03 | 2011-05-12 | 华为终端有限公司 | Network selection method and terminal device |
| CN101212804B (en) * | 2006-12-26 | 2011-09-21 | 中兴通讯股份有限公司 | Device and method for controlling international visit user to log into preferred operator network |
| CN102648651A (en) * | 2009-11-24 | 2012-08-22 | 萨热姆通讯能源电信简易股份有限公司 | Mobile telephony module and method for determining a cell as being adequate |
| CN103067513A (en) * | 2012-12-31 | 2013-04-24 | 上海汇纳网络信息科技有限公司 | Multi-network connecting system and connecting method based on Android |
| CN105530625A (en) * | 2015-12-21 | 2016-04-27 | 联想(北京)有限公司 | Information processing method and electronic device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5442806A (en) * | 1993-06-08 | 1995-08-15 | Oki Telecom | Preferred carrier selection method for selecting any available cellular carrier frequency when neither home nor preferred cellular carrier frequencies are available |
| US6148197A (en) * | 1998-03-06 | 2000-11-14 | Sbc Technology Resources, Inc. | Intelligent roaming system with over the air programming |
-
2004
- 2004-07-28 CN CN2004100717877A patent/CN100407855C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212804B (en) * | 2006-12-26 | 2011-09-21 | 中兴通讯股份有限公司 | Device and method for controlling international visit user to log into preferred operator network |
| CN101415173A (en) * | 2007-08-09 | 2009-04-22 | 华为技术有限公司 | Method for searching look-in service provider, as well as terminal and server |
| WO2009127101A1 (en) * | 2008-04-17 | 2009-10-22 | 中兴通讯股份有限公司 | A method for automatically selecting network and a terminal thereof |
| WO2009149667A1 (en) * | 2008-06-13 | 2009-12-17 | 华为技术有限公司 | Method, device and system for accessing the called |
| WO2011054268A1 (en) * | 2009-11-03 | 2011-05-12 | 华为终端有限公司 | Network selection method and terminal device |
| CN101699902B (en) * | 2009-11-03 | 2011-12-21 | 华为终端有限公司 | Network selection method and terminal device |
| US8606273B2 (en) | 2009-11-03 | 2013-12-10 | Huawei Device Co., Ltd. | Network selection method and terminal device |
| CN102648651A (en) * | 2009-11-24 | 2012-08-22 | 萨热姆通讯能源电信简易股份有限公司 | Mobile telephony module and method for determining a cell as being adequate |
| CN103067513A (en) * | 2012-12-31 | 2013-04-24 | 上海汇纳网络信息科技有限公司 | Multi-network connecting system and connecting method based on Android |
| CN105530625A (en) * | 2015-12-21 | 2016-04-27 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN105530625B (en) * | 2015-12-21 | 2020-07-24 | 联想(北京)有限公司 | Information processing method and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN100407855C (en) | 2008-07-30 |
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