CN100388858C - Method for acctomatic network selection by radio terminal - Google Patents
Method for acctomatic network selection by radio terminal Download PDFInfo
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- CN100388858C CN100388858C CNB2004100708878A CN200410070887A CN100388858C CN 100388858 C CN100388858 C CN 100388858C CN B2004100708878 A CNB2004100708878 A CN B2004100708878A CN 200410070887 A CN200410070887 A CN 200410070887A CN 100388858 C CN100388858 C CN 100388858C
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Abstract
The present invention discloses a method for automatic network selection by radio terminals. The method is used for detecting signals of a current mobile network; the method judges whether an attribution network can be achieved and can support protocols of a universal grouping radio system GPRS or not according to the network signals; if the attribution network can be achieved and can support the protocols of the universal grouping radio system GPRS, a terminal is accessed into the attribution network; then, the process quits; otherwise, the priority sequence of each alternate select network is determined at least according to preset priority sequence of a GPRS network for selecting networks in the sequence of a high priority to a low priority of the alternate select networks to make a request for accessing selected networks; if the terminal is successfully accessed into the selected networks, the process quits; if the terminal can not be accessed into all alternate select networks, the terminal is not accessed into the networks to quit the process. The method of the present invention can be adopted for making the terminal successfully select and access the networks of supporting the GPRS protocols when a PS service request is initiated.
Description
Technical field
The present invention relates to wireless access technology, particularly relate to a kind of method of acctomatic network selection by radio terminal.
Background technology
The mobile subscriber roams between the mobile network of country variant or different operators, and this is current very general phenomenon.Along with increasingly sharpening of global population mobility, a plurality of mobile operator of country variant or same country need and other mobile operator signs 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.
Current mobile network is divided into circuit switching (Circuit Switching, CS) territory and packet switching (PacketSwitching, PS) territory, difference corresponding global system for mobile communications (GSM) network and General Packet Radio System (GPRS) network, the GSM network provides CS business, and GPRS network provides PS business.The GPRS network construction of overwhelming majority Mobile Network Operator is more late than the GSM networking, builds GPRS network on the GSM network foundation, thereby makes the network that only provides the evolution of the network of CS business to become to provide the professional and PS business of CS.Because networking asynchronous, the roaming agreement of signing between the mobile operator be also respectively at GSM network and GPRS network, i.e. professional the and PS business of CS.A certain mobile operator signs GSM netsurfing agreement with a plurality of mobile operator after the GSM network builds up; After treating that GPRS network is built up, sign the GPRS network roaming agreement with a plurality of mobile operator again; The operator that signs GSM netsurfing agreement is not necessarily identical with the operator that signs the GPRS network roaming agreement.
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 priority list 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 certain public land mobile net (Public LandMobile Network that user terminal is linked into the user and initiatively selects, and/or the network of the corresponding Virtual network operator of access technology sign PLMN) number, the general user checks current network identity that reaches and/or Virtual network operator title by certain menu on the terminal or button, selects one of them then.
Be used to discern GSM/GPRS/ Wideband Code Division Multiple Access (WCDMA) (WCDMA) network of different mobile operator for PLMN number; The access technology sign is used to discern different access waies, and at present, access way has three kinds: GSM/GPRS, WCDMA and GSM COMPACT, corresponding different respectively access technology signs.In the SIM card of portable terminal, preserve home network identification, also preserve the network priority list of operator's definition simultaneously, comprise PLMN number and/or access technology sign of priority in the tabulation.
Table 1 is the network priority list of supporting the mobile operator of 3G, and is as shown in table 1, and the PLMN in the network selecting priority list number and access technology sign according to priority from high to low order are arranged in order.
Table 1 network priority list form one
| PLMN1-access technology sign 1 (limit priority) |
| PLMN1-access technology sign 2 |
| PLMN2-access technology sign 1 |
| ...... |
| PLMNn-access technology sign 1 (lowest priority) |
For same PLMN, different access technology signs have different priority.
Table 2 is network priority list of not supporting the mobile operator of 3G, and the access way of 3G network support only has GSM or GPRS, and the access technology of GSM and GPRS sign is identical, so need not to embody the access technology identification information in priority list.As shown in table 2, the PLMN in the network selecting priority list number according to priority from high to low order be arranged in order.
Table 2 network priority list form two
| PLMN1 (limit priority) |
| PLMN2 |
| PLMN3 |
| ...... |
| PLMNn (lowest priority) |
Flow process such as Fig. 1 that the terminal automatic network inserts as can be seen from Figure 1, when portable terminal is operated under the automatic network access module, judge at first whether home network can reach, and can reach as if home network, then access belonging network; If home network is unreachable, then use the network selecting priority list of operator's definition, according to the priority of determining that can reach network, initiate to insert request to the highest network of priority one by one, until successful access network.
Though prior art can realize acctomatic network selection by radio terminal, have following defective: because the GSM network is than the first appearance of GPRS network, so Virtual network operator at the GSM net structure network priority list.Appearance along with GPRS network, Virtual network operator is signed roaming agreement with the Virtual network operator that GPRS network can be provided again, and Virtual network operator is added in the network priority list of original structure, not at the new network priority list of GPRS agreement structure, as can be seen from the above table, the shared network identity of the GSM of same operator and GPRS network, do not distinguished, so it is single from network priority list, when the user wished to use PS professional, terminal did not also know which network can provide the PS business in the network priority list.
Like this, when the user roams into another zone, terminal is selected a network according to network priority list, if this network and home network have only the GSM roaming agreement, and do not have the GPRS roaming agreement, in this case, even being arranged in the network priority list, other and home network signed the lower network of priority of GPRS roaming agreement, under automatic preference pattern, the user also can't switch to other network, thereby causes the user can't use the PS business.
And, there is not home network whether to support the information of GPRS in the SIM card at present, if home network is not supported GPRS, automatically under the preference pattern, when home network can reach, terminal can only access belonging network, can't use the PS business, even there is another network that can reach that the GPRS roaming agreement is arranged with home network, terminal also can't switch to this network.
So, under current network selecting technology, the user can only utilize the manual network preference pattern by understanding the title of operator that the roaming country of GPRS network roaming agreement is arranged with home network, select the network of this operator, but this mode is too complicated for many users.Because the increasingly extensive application of PS business, if the automatic network of portable terminal selects not have special network priority list at GPRS, just exist the roamer can't select and insert the hidden danger of the network of suitable support PS business, this will bring very big influence to carrying out of PS business.
Summary of the invention
Main purpose of the present invention is to provide a kind of method of acctomatic network selection by radio terminal, makes wireless terminal when initiating the PS service request, can select and insert the network of supporting the GPRS agreement automatically.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of acctomatic network selection by radio terminal is provided with the information whether home network supports the GRPS agreement, and this method comprises the steps:
A, detect current mobile network signals, judge according to this network signal whether home network can reach and support General Packet Radio System GPRS agreement, if then the terminal access belonging network withdraws from this flow process then; Otherwise, forward step B to;
B, according to predefined GPRS network priority orders, determine each candidate network priority orders;
C, insert selected network,, then withdraw from this flow process if terminal successfully inserts selected network with candidate network priority selective sequential network from high to low and request; If terminal can't insert all candidate network, then terminal access network not withdraws from this flow process.
Wherein, before steps A, this method further comprises: the priority orders of the GPRS network of the mobile operator of setting and home network signing GPRS roaming agreement.
Wherein, setting with the priority orders of the GPRS network of the mobile operator of home network signing GPRS roaming agreement is: the priority list of the GPRS network of the mobile operator of setting and home network signing GPRS roaming agreement.
Wherein, in step B, describedly determine that according to predefined GPRS network priority orders each candidate network priority orders is: according to comprising the GPRS network priority list at interior network priority list set constructor candidate network priority list.
Wherein, in steps A, whether support the information of GRPS agreement to judge whether home network supports the GPRS agreement by home network.
Wherein, if terminal is only supported packet switching PS business, then described structure candidate network priority list is that the network in the GPRS network priority list is added in the candidate network priority list, wherein, the network priority sequence consensus in the network priority in candidate network priority list order and the GPRS network priority list.
Wherein, if terminal had both been supported also support circuit-switched CS business of PS business, then described network priority list group comprises GPRS network priority list and original network priority list,
Described structure candidate network priority list is that the network in GPRS network priority list and the original network priority list is added in the candidate network priority list, wherein, the priority of common factor network in the candidate network priority list in two tables is the highest, and its priority orders is random order; The priority ratio common factor network of non-common factor network is low, and its priority orders is random order.
Wherein, described structure candidate network priority list further comprises: will not be included in the network priority list but terminal detected all can reach network and add in the candidate network priority list, the priority of these networks is minimum in the candidate network priority list.
Wherein, described original network priority list is the network priority list of mobile operator definition.
Wherein, described original network priority list is the network priority list and the user-defined network priority list of mobile operator definition.
Wherein, step C comprises:
C1, terminal are selected the highest network of candidate network priority, and request inserts this network;
Whether C2, terminal judges selected network allow to insert, if, then insert selected network, withdraw from this flow process then; Otherwise, forward step C3 to;
Whether C3, terminal judges selected network are the minimum networks of candidate network priority, if then terminal access network not withdraws from this flow process; Otherwise terminal selects candidate network priority only to be lower than the network of current selected network, and asks to insert this network, forwards step C2 then to.
Wherein, among the step C, after the access network, further comprise: terminal is not to the user prompt access failure for described terminal.
The invention provides a kind of method of acctomatic network selection by radio terminal, this method is to detect current mobile network signals, judges according to this network signal whether home network can reach and support General Packet Radio System GPRS agreement, if, then the terminal access belonging network withdraws from this flow process then; Otherwise, according to predefined GPRS network priority orders, determine each candidate network priority orders, insert selected network with candidate network priority selective sequential network from high to low and request, if terminal successfully inserts selected network, then withdraw from this flow process; If terminal can't insert all candidate network, then terminal access network not withdraws from this flow process.And the method for prior art is according to the structure of the GSM network priority list on SIM card candidate network priority list, and then according to the selection of the priority orders in candidate network priority list network, in the GSM network priority list, the shared network identity of the GSM of same operator and GPRS network, can't distinguish, so when terminal wishes to use PS professional, might can only be linked into the network of the higher support gsm protocol of priority, and can't switch to the network of supporting the GPRS agreement, can't use the PS business thereby cause.Used after the method for the present invention, be specifically designed to the GPRS network priority list of PS business and the information whether home network supports the GPRS agreement by being provided with one, when terminal wishes to use PS professional, guarantee to insert the network of supporting the GPRS agreement, thereby avoided to use in the prior art hidden danger of PS business, for terminal provides more reliable PS service, thereby help carrying out rapidly of PS business.
Description of drawings
Fig. 1 is the method flow diagram of the acctomatic network selection by radio terminal of prior art.
Fig. 2 is the method flow diagram according to acctomatic network selection by radio terminal of the present invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 2 is the method according to acctomatic network selection by radio terminal of the present invention, and as can be seen from Figure 2, this method comprises the steps:
Step 201: in the SIM card of portable terminal, increase the information whether GPRS network priority list and home network support the GPRS agreement.
The GPRS network priority list is defined by operator, and record and home network have the priority of the GPRS network of GPRS network roaming agreement, the form of this tabulation and table 1 or table 2 is consistent, and for the mobile operator that supports 3G, this tabulation is consistent with the form of table 1; For the mobile operator that does not support 3G, this tabulation is consistent with the form of table 2.
At this,, claim that original tabulation is the GSM network priority list, because original network priority list is provided with at the GSM network basically in order to distinguish the GPRS network priority list of original network priority list and neotectonics.
Step 202: terminal detects current all network signals that can reach.
Step 203: whether terminal judges access belonging network, if then access belonging network finishes then; Otherwise, forward step 204 to.
Step 204: terminal is constructed the candidate network priority list according to the network priority list on the SIM card.
Step 205: terminal is selected the highest network of candidate network priority list medium priority, and initiates to insert request to this network.
Step 206: selected network judges whether to allow terminal to insert, if then forward step 210 to; Otherwise, forward step 207 to.
Step 207: whether the terminal judges selected network is the minimum network of candidate network priority list medium priority, if then forward step 209 to; Otherwise, forward step 208 to.
Step 208: terminal selects candidate network priority list medium priority to be only second to the network of current network, and initiates access to this network and ask, and returns step 206 then.
Step 209: the terminal display network is selected failure, finishes then.
Step 210: terminal inserts selected network, finishes then.
For the terminal that can realize different service types, selecting automatically in the mode of network, judge whether the mode difference of access belonging network and structure candidate network priority list, illustrated respectively below.
(1) for the terminal of only supporting the CS business:
In step 203, terminal judges according to the signal of detected current network in step 202 whether home network can reach, if home network can reach, and terminal access belonging network then; If home network is unreachable, terminal access belonging network not then, execution in step 204 is to step 210;
In step 204, terminal is according to the structure of the GSM network priority list on SIM card candidate network priority list, at higher reached at the network of GSM tabulation medium priority, the priority in candidate list is also higher, and its priority orders is consistent with priority orders in the GSM network priority list; Be not included in the GSM tabulation but terminal to detect the priority of network in the candidate priorities tabulation that can reach minimum, if reached at the network in a plurality of GSM of not being included in tabulations is arranged, the priority orders of each network in the candidate network priority list can be arranged arbitrarily.
For example, the priority orders of the network in the GSM network priority list is A, B, C, D, if the detected network that reaches of terminal has: A, B, C, D, F, G, then the candidate network priority list comprises A, B, C, D, F, G, wherein, the priority of A, B, C and D is higher, and according to the sequence arrangement in the GSM network priority list, the priority of F and G is lower, and its priority orders can be arranged arbitrarily.
(2) for the terminal of only supporting the PS business:
In step 203, terminal judges according to the signal of detected current network in step 202 whether home network can reach, and whether support the information of GPRS agreement to judge whether home network supports the GPRS agreement according to the home network of preserving on the SIM card, if home network can reach and support GPRS agreement, then terminal access belonging network; Otherwise terminal is access belonging network not, and execution in step 204 is to step 210;
In step 204, terminal is according to the structure of the GPRS network priority list on SIM card candidate network priority list, at high reached at the network of GPRS tabulation medium priority, the priority in candidate list is also high, and its priority orders is consistent with priority orders in the GPRS network priority list; Be not included in the GPRS tabulation but terminal to detect the priority of network in the candidate priorities tabulation that can reach minimum, if there are a plurality of networks that reach not to be included in the GPRS tabulation, its priority orders in the candidate network priority list can be arranged arbitrarily.
For example, the priority orders of the network in the GPRS network priority list is A, B, C, D, if the detected network that reaches of terminal has: A, B, C, D, F, G, then the candidate network priority list comprises A, B, C, D, F, G, wherein, the priority of A, B, C and D is higher, and arranges according to the priority orders in the GPRS network priority list, the priority of F and G is lower, and its priority orders can be arranged arbitrarily.
(3) for not only supporting the CS business but also supporting the terminal of PS business:
In step 203, the terminal judges whether method of access belonging network is: terminal judges according to the signal of detected current network in step 202 whether home network can reach, and whether support the information of GPRS agreement to judge whether home network supports the GPRS agreement according to the home network of preserving on the SIM card, if home network can reach and support GPRS agreement, then terminal access belonging network; Otherwise terminal is access belonging network not;
In step 204, terminal is according to GSM network priority list on the SIM card and GPRS network priority list structure candidate network priority list, reached at network in the common factor of two tables of selection is as the highest network of candidate network priority list priority, during the sequence consensus of the priority of common factor network in two tables, its priority orders in the candidate network priority list with two the table in consistent, when the order of the priority of common factor network in two tables is inconsistent, but its priority orders randomize in the candidate network priority list; The priority of reached at the network of other non-common factor in candidate list is low in the priority of common factor network, but its priority orders randomize in the candidate network priority list; Be not included in GSM tabulation and the GPRS tabulation but terminal to detect the priority of network in candidate priorities is tabulated that can reach minimum, if there are a plurality of networks that reach not to be included in GSM and the GPRS tabulation, its priority orders in the candidate network priority list can be arranged arbitrarily.
For example, the priority orders of the network in the GSM network priority list is A, B, C, D, the priority orders of the network in the GPRS network priority list is E, D, C, F, if the detected network that reaches of terminal has: A, B, C, D, F, G, then the candidate network priority list comprises A, B, C, D, F, G, and wherein, the priority of C and D is the highest, the priority of D can be higher than C, also can be lower than C; The priority of A, B, E and F can be arranged arbitrarily; Because G is not in network priority list, so the priority of G in the end.
In some cases, not only preserve the GSM network priority list of mobile operator definition in the SIM card, also may preserve user-defined GSM network priority list, so for the terminal of supporting the CS business, when structure candidate network priority list, also need to consider user-defined GSM network priority list, and the priority of user-defined GSM network priority list is higher than the GSM network priority list of operator's definition.Promptly in step 204, with the common factor network in the GPRS network priority list of the GSM network priority list of user-defined GSM network priority list, operator definition and operator's definition as the highest network of candidate network priority list medium priority, the priority ratio common factor network of non-common factor network in the candidate network priority list is low, is not listed in above-mentioned three tabulations but network measuring is minimum to the priority of the network that can reach in the candidate network priority list.
In concrete implementation process, can carry out suitable improvement, to adapt to the concrete needs of concrete condition to the method according to this invention.Therefore be appreciated that according to the specific embodiment of the present invention just to play an exemplary role, not in order to restriction protection scope of the present invention.
Claims (12)
1. the method for an acctomatic network selection by radio terminal is characterized in that, the information whether home network supports the GRPS agreement is set, and this method comprises the steps:
A, detect current mobile network signals, judge according to this network signal whether home network can reach and support General Packet Radio System GPRS agreement, if then the terminal access belonging network withdraws from this flow process then; Otherwise, forward step B to;
B, according to predefined GPRS network priority orders, determine each candidate network priority orders;
C, insert selected network,, then withdraw from this flow process if terminal successfully inserts selected network with candidate network priority selective sequential network from high to low and request; If terminal can't insert all candidate network, then terminal access network not withdraws from this flow process.
2. the method for acctomatic network selection by radio terminal according to claim 1 is characterized in that, before steps A, this method further comprises: the priority orders of the GPRS network of the mobile operator of setting and home network signing GPRS roaming agreement.
3. the method for acctomatic network selection by radio terminal according to claim 2, it is characterized in that setting with the priority orders of the GPRS network of the mobile operator of home network signing GPRS roaming agreement is: the priority list of the GPRS network of the mobile operator of setting and home network signing GPRS roaming agreement.
4. whether the method for acctomatic network selection by radio terminal according to claim 1 is characterized in that, in steps A, support the information of GRPS agreement to judge whether home network supports the GPRS agreement by home network.
5. the method for acctomatic network selection by radio terminal according to claim 3, it is characterized in that, in step B, describedly determine that according to predefined GPRS network priority orders each candidate network priority orders is: according to comprising the GPRS network priority list at interior network priority list set constructor candidate network priority list.
6. the method for acctomatic network selection by radio terminal according to claim 5, it is characterized in that, if terminal is only supported packet switching PS business, then described structure candidate network priority list is that the network in the GPRS network priority list is added in the candidate network priority list, wherein, the network priority sequence consensus in the network priority in candidate network priority list order and the GPRS network priority list.
7. the method for acctomatic network selection by radio terminal according to claim 5, it is characterized in that, if terminal had both been supported also support circuit-switched CS business of PS business, then described network priority list group comprises GPRS network priority list and original network priority list
Described structure candidate network priority list is that the network in GPRS network priority list and the original network priority list is added in the candidate network priority list, wherein, the priority of common factor network in the candidate network priority list in two tables is the highest, and its priority orders is random order; The priority ratio common factor network of non-common factor network is low, and its priority orders is random order.
8. according to the method for claim 6 or 7 described acctomatic network selection by radio terminal, it is characterized in that, described structure candidate network priority list further comprises: will not be included in the network priority list but terminal detected all can reach network and add in the candidate network priority list, the priority of these networks is minimum in the candidate network priority list.
9. the method for acctomatic network selection by radio terminal according to claim 7 is characterized in that, described original network priority list is the network priority list of mobile operator definition.
10. the method for acctomatic network selection by radio terminal according to claim 7 is characterized in that, described original network priority list is the network priority list and the user-defined network priority list of mobile operator definition.
11. the method for acctomatic network selection by radio terminal according to claim 1 is characterized in that, step C comprises:
C1, terminal are selected the highest network of candidate network priority, and request inserts this network;
Whether C2, terminal judges selected network allow to insert, if, then insert selected network, withdraw from this flow process then; Otherwise, forward step C3 to;
Whether C3, terminal judges selected network are the minimum networks of candidate network priority, if then terminal access network not withdraws from this flow process; Otherwise terminal selects candidate network priority only to be lower than the network of current selected network, and asks to insert this network, forwards step C2 then to.
12. the method for acctomatic network selection by radio terminal according to claim 1 is characterized in that, among the step C, after the access network, further comprise: terminal is not to the user prompt access failure for described terminal.
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| CNB2004100708878A CN100388858C (en) | 2004-07-23 | 2004-07-23 | Method for acctomatic network selection by radio terminal |
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| CNB2004100708878A CN100388858C (en) | 2004-07-23 | 2004-07-23 | Method for acctomatic network selection by radio terminal |
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| CN100388858C true CN100388858C (en) | 2008-05-14 |
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| WO2002069661A2 (en) * | 2001-02-26 | 2002-09-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method for plmn selection |
| WO2003067917A1 (en) * | 2002-02-04 | 2003-08-14 | Qualcomm, Incorporated | Method and apparatus for configurable selection and acquisition of a wireless communications system |
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| US6016427A (en) * | 1993-06-08 | 2000-01-18 | Oki Telecom, Inc. | Preferred carrier selection method |
| US6148197A (en) * | 1998-03-06 | 2000-11-14 | Sbc Technology Resources, Inc. | Intelligent roaming system with over the air programming |
| WO2002069661A2 (en) * | 2001-02-26 | 2002-09-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method for plmn selection |
| WO2003067917A1 (en) * | 2002-02-04 | 2003-08-14 | Qualcomm, Incorporated | Method and apparatus for configurable selection and acquisition of a wireless communications system |
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| Characteristics of the USIM application (Release 6). 3rd，Generation，Partnership，Project，，TechnicalSpecification，Group，Terminals.3GPP TS 31.102 V6.6.0. 2004 |
| Characteristics of the USIM application (Release 6). 3rd，Generation，Partnership，Project，，TechnicalSpecification，Group，Terminals.3GPP TS 31.102 V6.6.0. 2004 * |
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| CN1725897A (en) | 2006-01-25 |
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