CN1761220A - Implementation method for reselecting network - Google Patents
Implementation method for reselecting network Download PDFInfo
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- CN1761220A CN1761220A CN 200410085337 CN200410085337A CN1761220A CN 1761220 A CN1761220 A CN 1761220A CN 200410085337 CN200410085337 CN 200410085337 CN 200410085337 A CN200410085337 A CN 200410085337A CN 1761220 A CN1761220 A CN 1761220A
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Abstract
The method includes following steps: network down sends information of restricting access level to user terminal, and carrying indication information whether terminal changes network is allowed; determining own restricting access level, user terminal reads indication information whether terminal changes network is allowed; if not, then no longer start access attempt or respond message of system seek; otherwise; user terminal starts change of network. When network, where the user terminal is positioned on, congestion happens, user terminal can change to another network so that influence of current network congestion is lowered to minimum in order to make network obtain more rational utilization.
Description
Technical field
The present invention relates to wireless communication field, refer to a kind of implementation method of reselecting network especially.
Background technology
When network congestion or fault, the means that extensively adopt are to insert level limit at present, make user terminal no longer initiate access attempts or responding system beep-page message in certain zone.The user inserts rank and divides 15 classes: 0～9th, and domestic consumer, 11～15th, the special user is respectively: 11 mobile networks, 12 safety services, 13 public sectors, 14 urgent calls, 15 employees of operator.The user inserts rank and is kept in the SIM card, and indication is carried out the network insertion restriction to which other user of level in Access Network RNC/BSC (radio network controller/base station controller) the sending system broadcast.When aerial congested and Access Network was congested, RNC/BSC determined the user class of needs restriction according to congestion situation; When core network congestion, MSC/SGSN sends overload (overload) message by the Iu interface to RNC/BSC, RNC/BSC determines the user class of needs restriction according to overload message frequency, RNC/BSC issues by system broadcast message and inserts level limit information then, wherein comprises to be subjected to confinement CS/PS and corresponding limited users rank.User terminal is the access level limit information in the fixed interval time read system message under idle pulley, and self user who preserves in the reading SIM card inserts rank and judges whether this access rank is limited, if limited, this user terminal is no longer initiated the access attempts in this territory and system's beep-page message in this territory of response.RNC/BSC can issue the access level limit information of same area not at CS and PS by system broadcast message.The user that new initiation is only controlled in network congestion inserts request, to carrying out business with unaffected, so the access level limit only acts on the terminal of idle condition, and is inoperative to the terminal that is in connection status.
At present, the multimode user terminal of two or more completely different networks has appearred selecting arbitrarily to use, as: be applied to GSM network and cdma network, Personal Handyphone System PHS network and GSM network, GSM network and WCDMA network, public mobile network (as: GSM/CDMA/WCDMA etc.) and wlan network simultaneously.The advantage of multimode terminal is to take into account multiple network simultaneously, the part multimode terminal at a time only is operated in a network/pattern, the part multimode terminal also can work in a plurality of network/patterns simultaneously, and the user can select to allow terminal works in one of them network/pattern.
In the technology, congested now if certain network takes place, make user terminal in certain zone, no longer initiate access attempts or responding system beep-page message by inserting level limit.If terminal is for supporting the multimode terminal of multiple access technology, also there is not a kind of effective mechanism to make terminal or network initiate the change of access technology, make terminal change to another network from current network, wherein another network can be identical access technology or different access technologies with current network.For example:
(1) there are network A and B in certain user region, all is the GSM network, and can both provide service for this user, and network A is the current service network of user, and when network A takes place when congested, the user can not change to network B from network A.
(2) certain 3G subscription has the GSM/WCDMA dual-mode terminal, be positioned at the two net areas of coverage of GSM and WCDMA, 3G subscription WCDMA network there is higher access priority than GSM network, this user's the network that provides is provided the WCDMA network under the normal condition, when WCDMA network generation heavy congestion, if this user is a limited users, then can not in current WCDMA network, carry out any business, can not change to the GSM network from current WCDMA network.
Therefore, the shortcoming of prior art is: when congested or fault take place the current place of user network, if this user is limited, can not carry out any business in current network, can not carry out network reselection, promptly the network from current congestion changes to another network.This makes customer service be subjected to very big influence, simultaneously the Internet resources of operator can not rationally be utilized.
Summary of the invention
The invention provides a kind of implementation method at reselecting network, solving when congested or fault take place network, user terminal can not network congested from current generation or fault changes to the problem of other networks.
The inventive method comprises the following steps:
A kind of when network congestion the implementation method of reselecting network, this method may further comprise the steps:
A: network issues and inserts level limit information, and carries the indication that whether allows terminal change network;
B: user terminal receives described access level limit information, and judges whether limitedly according to self access rank, if not limited, then normally inserts current network; Otherwise, change step C over to;
C: user terminal judges whether to allow to change network according to described indication, if do not allow, then no longer initiates access attempts or responding system beep-page message; Otherwise, initiate to change the flow process of network to select other networks.
Wherein:
Described access level limit information comprises circuit commutative field and/or the restricted access rank of packet-switched domain.
If user terminal is supported circuit domain and packet switch domain service, when only the access rank of circuit domain or packet domain being limited in inserting level limit information, user terminal can select to initiate or do not initiate to change the flow process of network.
When user terminal is determined to change network, allow the user initiatively to select whether to initiate to change flow through a network.
Inserting level limit information is issued by the base station controller/radio network controller in the network.
Base station controller/radio network controller according to the current congestion situation of network or/and whether the decision of the access style of user terminal requests allows terminal to change network.
User terminal initiates to change the flow process of network immediately after judgement allows to change network, perhaps just initiate to change the flow process of network after the process certain time-delay.
Other networks that terminal is selected can be the networks that belongs to same access technology with current network, also can be the networks that belongs to different access technologies with current network.
Adopt the present invention, when congested or fault took place the current place of user terminal network, user terminal can in time change to another network, makes current network influence congested or fault be reduced to minimum, thereby improve user's satisfaction, and make network obtain more reasonable utilization.
Description of drawings
Fig. 1 initiates the flow chart that network changes for terminal after the network congestion of the present invention.
Embodiment
Change in order to make when network congestion or the fault terminal carry out network, whether base station controller/radio network controller (BSC/RNC) carries in the access level limit information that issues and allows terminal to change the indication of network.Carrying of this indication needs the existing access level limit information of expansion, promptly by the new field of definition in inserting level limit information, perhaps existing spare field clearly defined and realizes.Terminal then determines whether that according to this indication reselecting network inserts when judging that self is limited.
Present embodiment is an example with the situation of network congestion, and the method for network reselection disclosed in this invention is described, other situations are similar with it.
Whether allow terminal to change network can decide according to the current congestion situation of network and/or the access style of user terminal requests.This is because network congestion comprises: multiple situations such as equipment of the core network MSC/SGSN is congested, access network equipment BSC/RNC is congested, air interface is congested; Wherein circuit or interface resource deficiency, equipment signaling disposal ability deficiency all can cause congested; Same Client-initiated inserts request and comprises: polytypes such as call business request, packet traffic requests, mobile management signaling, short message service request.So,, can treat with a certain discrimination dissimilar access requests at different network congestions.As: congested at air interface, need restriction call service request and packet traffic requests, because these business need take proprietary Traffic Channel, and other does not need the access request of proprietary Traffic Channel, then can limit or not limit.BSC/RNC or MSC/SGSN are congested, if line resource is congested, then need not limit mobile management signaling, short message service request; If CPU disposal ability deficiency or signalling path are congested, then need limit all and insert request.Therefore, BSC/RNC need judge whether to allow terminal to change network according to the access style of actual congestion situation and/or user terminal requests when network congestion.Whether the present invention mainly considers to limit according to user's access rank, carry to allow terminal to change the indication of network in inserting level limit information.
Consider the congested different of CS territory and PS territory, the restriction rank to CS and PS in the access level limit information also is independently.So, for only supporting CS or only support for the terminal of PS, only need whether the limited needs that judge whether be initiated network and are changed according to the corresponding field of its support; For the terminal of supporting CS and PS simultaneously, if limited another territory, one of them territory is not limited, whether initiates network and change, then can in terminal, set in advance, or independently select decision by the user in starting terminal one user interface.
Consult shown in Figure 1ly, it is as follows to realize after the network congestion that terminal is initiated the flow process that network changes:
1, network congestion, radio network controller (RNC) issue by system broadcast message and insert level limit information, and carry the indication information that whether allows terminal to change network in this access level limit information.
2, the user terminal receiving system broadcast of idle condition obtains described access level limit information.
3, whether user terminal is judged according to self user class of storing in the SIM card and is inserted limitedly, if not limited, then terminal can normally insert current network and finish this flow process; Otherwise carry out step 4.
4, user terminal reads and inserts the indication that whether allows terminal change network of carrying in the level limit information, if this indication does not allow to change network, then terminal is not initiated network and is changed according to access restriction scheme of the prior art, does not initiate any access request and does not respond beep-page message yet; If allow, then the terminal situation of forbidding and allowing according to detected network signal, network priority and network insertion is selected another suitable network, and initiation location area (LA/RA) is new technological process more, is linked into new network.
As: the network of certain 3G subscription current service is the WCDMA network A, because this network capacity is less, when occurring in particular cases as disaster or festival and special event etc., a large amount of telephone traffics happen suddenly, network A generation heavy congestion, RNC issues by system broadcast message and inserts level limit information and allow terminal to change the indication information of network, is 70% as the limited users ratio, PS and CS are all limited, and then the limited users rank can be 0～6 (domestic consumer's rank is 0～9).User class is that 6 user terminal receives that to determine that self inserts after the system broadcast message limited, therefore initiatively carries out network reselection according to the indication that allows to change network and inserts the WCDMA network B.
The new network that the terminal reselecting network inserts can belong to the network of same access technology or the network of different access technologies with the congested network before changing.As: for the WCDMA single-mode terminal, the network after then changing is inevitable also to be the WCDMA network, and for the GSM/WCDMA dual-mode terminal, the network after then changing can be WCDMA network or GSM network; If user terminal is the GPRS/WLAN dual-mode terminal, the current service network is a GPRS network, and congested if this GPRS network takes place, then terminal can be linked into wlan network, provides service by wlan network.
Change as if terminal initiation network, can select to initiate to initiate the network change again behind network change or the process suitable time-delay at once.Because under a fairly large number of situation of restricted terminal, terminal network changes will cause more new technological process of a large amount of location area, promptly produce a large amount of mobile management message, bring the deterioration of network congestion for preventing these a large amount of mobile management message, when especially core net node MSC/SGSN is congested, can allow terminal change through initiating network behind the suitable time-delay again.Time-delay control can be by newly-increased timer in terminal, also can utilize existing timer to control realization, this timer value can be fixedly installed in terminal or the SIM card by operator, if the periodic network gravity treatment timer when utilizing the existing terminal automatic network selection, its value scope is 6 minutes to 10 hours.In some cases, congested node can not be handled these mobile management message, then can refuse location area and upgrade, and at this moment the network of terminal changes failure, still remains in the network of current congestion.
The network change method that the present invention proposes, can make user terminal network congested from current generation or fault in time change to another network, make current network influence congested or fault be reduced to minimum, thereby improve user's satisfaction, and make network obtain more reasonable utilization.
Below only the present invention will be described with preferred embodiment, and those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1, a kind of implementation method of reselecting network, this method may further comprise the steps:
A: network issues and inserts level limit information, and carries the indication that whether allows terminal change network;
B: user terminal receives described access level limit information, and judges whether limitedly according to self access rank, if not limited, then normally inserts current network; Otherwise, change step C over to;
C: user terminal judges whether to allow to change network according to described indication, if do not allow, then no longer initiates access attempts or responding system beep-page message; Otherwise, initiate to change the flow process of network to select other networks.
2, the method for claim 1 is characterized in that: described access level limit information comprises circuit commutative field and/or the restricted access rank of packet-switched domain.
3, method as claimed in claim 2, it is characterized in that: if user terminal is supported circuit domain and packet switch domain service, when only the access rank of circuit domain or packet domain being limited in inserting level limit information, user terminal can select to initiate or do not initiate to change the flow process of network.
4, method as claimed in claim 3 is characterized in that: when user terminal is determined to change network, allow the user initiatively to select whether to initiate to change flow through a network.
5, the method for claim 1 is characterized in that: described access level limit information is issued by the base station controller/radio network controller in the network.
6, method as claimed in claim 5 is characterized in that: base station controller/radio network controller according to the current congestion situation of network or/and whether the decision of the access style of user terminal requests allows terminal to change network.
7, as any described method of claim 1-6, it is characterized in that: user terminal initiates to change the flow process of network immediately after judgement allows to change network, perhaps just initiates to change the flow process of network after the process certain time-delay.
8, method as claimed in claim 7 is characterized in that: described certain time-delay realizes by the control of terminal inner timer.
9, the method for claim 1 is characterized in that: other networks that terminal is selected can be the networks that belongs to same access technology with current network, also can be the networks that belongs to different access technologies with current network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100853373A CN100352219C (en) | 2004-10-11 | 2004-10-11 | Implementation method for reselecting network |
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| CNB2004100853373A CN100352219C (en) | 2004-10-11 | 2004-10-11 | Implementation method for reselecting network |
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| CN1761220A true CN1761220A (en) | 2006-04-19 |
| CN100352219C CN100352219C (en) | 2007-11-28 |
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| CN102118830A (en) * | 2010-01-05 | 2011-07-06 | 华为技术有限公司 | Access control method, device and system. |
| CN102202374A (en) * | 2010-03-23 | 2011-09-28 | 中兴通讯股份有限公司 | Method and system for controlling access of machine-type communication (MTC) equipment |
| CN102308635A (en) * | 2011-04-26 | 2012-01-04 | 华为终端有限公司 | Terminal access method, apparatus and system |
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| US20020111166A1 (en) * | 2001-02-12 | 2002-08-15 | Opuswave Network, Inc. | Method and system for selecting a prefer red cell in a wireless communication system |
| JP4792692B2 (en) * | 2002-10-10 | 2011-10-12 | パナソニック株式会社 | Mobile communication device, mobile router, and mobile communication system |
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