CN101056455A - A cell reselection method after cell access failure - Google Patents
A cell reselection method after cell access failure Download PDFInfo
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- CN101056455A CN101056455A CNA2006100724600A CN200610072460A CN101056455A CN 101056455 A CN101056455 A CN 101056455A CN A2006100724600 A CNA2006100724600 A CN A2006100724600A CN 200610072460 A CN200610072460 A CN 200610072460A CN 101056455 A CN101056455 A CN 101056455A
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Abstract
A method for selecting a cell again after a cell access being failed is provided. A method for selecting a cell again after a user terminal being failed to access the cell, comprises following steps: (a) the user terminal recording information of a service cell which is failed to access when the user terminal accessing the cell; (b) deleting all recorded accessing failed service cells when the user terminal constructs a service cell re-selection mearsure list, and triggerring cell re-selection mearsure; (c) the user terminal evaluating the service cells of re-selection mearsure results, orderly selecting one from the service cells which satisfy a cell re-selection evaluation rule, judging whether the selected service cell satisfies a cell stay condition, if there is a service cell satisfying the cell stay condition, executing next step; (d) staying the service cell and starting service cell accessing again, thereafter finishing the re-selection. The method of the invention can access the service cell more effectively and conveniently, thereby avoiding service delay and reducing call-loss.
Description
Technical field
The present invention relates to third generation portable terminal, particularly portable terminal carries out method of cell reselection behind the access failure of sub-district.
Background technology
Public land mobile network (being called for short PLMN) is the network of setting up for the land mobile service is provided.User terminal (User Equipment is hereinafter to be referred as UE) start back is in order to accept the service that network provides, and it is resident to select a sub-district to carry out in the network of appointment, and monitors this system information of subdistricts and beep-page message.
On the other hand, for the UE that inserts is controlled, each UE can be endowed corresponding access grade (Access Class is hereinafter to be referred as AC), and AC that can insert and the AC that forbids inserting can be notified in the sub-district in system information broadcast simultaneously.According to present 3GPP agreement TS25.304 regulation, when carrying out cell selecting/gravity treatment, UE need not be concerned about whether can insert this Serving cell.
When UE makes a call or receives other when service, just need to insert current persistent district, might the sub-district forbid this UE access this moment or owing to reason such as congested causes access failure.In this case, UE generally need initiate the sub-district gravity treatment and receive service to choose other sub-district.
When carrying out the sub-district gravity treatment, UE will the measurement result to abutting subdistrict assess in certain evaluation time, carry out resident to select the best sub-district of signal.
Concrete handling process as shown in Figure 1, step is as follows:
Step 110, the Serving cell access failure, the triggering cell gravity treatment is measured;
Step 120 is assessed the sub-district reselection measurements, selects to satisfy the best Serving cell of signal of sub-district reselection evaluation criterion;
Step 130 judges that whether this Serving cell satisfies the resident condition in sub-district, if carry out next step, otherwise returns step 120;
Step 140, it is resident to carry out the sub-district, initiates Serving cell again and inserts.
Because carrying out the sub-district, UE is indifferent to whether can insert this Serving cell when resident, thus when carrying out the sub-district gravity treatment at the sub-district access failure, might be because the signal of former Serving cell be the strongest, gravity treatment is to this sub-district again; Or gravity treatment is to the another one sub-district, but this sub-district is not satisfied UE yet and inserted requirement.And in fact, have other sub-district to satisfy the condition that UE is resident and insert, will cause the delay of serving and the increase of call loss like this.
Summary of the invention
The technical problem to be solved in the present invention provides the method for re-selecting cell behind the access failure of a kind of sub-district, and more existing reselecting method can more effective access service efficiently sub-district, avoids the delay of serving and helps reducing call loss.
In order to solve the problems of the technologies described above, the invention provides the method for re-selecting cell behind the access failure of a kind of sub-district, be used for carrying out method of cell reselection after user terminal inserts the sub-district failure, may further comprise the steps:
When (a) user terminal carries out running into access failure when the sub-district is inserted, write down the information of the Serving cell of this access failure;
(b) user terminal makes up the Serving cell that removes all access failures that write down when tabulation is measured in the Serving cell gravity treatment, and the triggering cell gravity treatment is measured then;
(c) user terminal is assessed the Serving cell in the reselection measurements, from the Serving cell that satisfies sub-district reselection evaluation criterion, choose one successively, judge whether it satisfies the resident condition in sub-district,, carry out next step if there is the Serving cell that satisfies the resident condition in sub-district;
(d) resident laying equal stress on to this Serving cell newly initiated the Serving cell access, and this gravity treatment finishes.
Further, said method also can have following characteristics: access failure cell list of initialization when described step (a) begins in system before, its content are empty; The access failure information of access failure sub-district described in the described step (a) is kept in this access sub-district failure tabulation.
Further, said method also can have following characteristics: described step (a) also is provided with the access failure timer of a correspondence when the service cell information of the described access failure of record, this access failure timer then after, the deletion of the service cell information of the access failure that it is corresponding.
Further, said method also can have following characteristics: when described access failure timer then, after the service cell information of the access failure that it is the corresponding deletion, user terminal judge current whether chosen can be resident the sub-district, if, then directly finish, otherwise whether the access grade that reexamines this terminal satisfies the access conditions of this access failure sub-district, if, then resident to this sub-district and initiate the sub-district and insert, this gravity treatment finishes, otherwise continues original reuse adoption process.
Further, said method also can have following characteristics: described step (c) further may further comprise the steps:
(c1) user terminal is assessed the measurement result of abutting subdistrict, and record satisfies the sub-district of sub-district reselection evaluation criterion and by the ordering of the quality of signal quality, therefrom chooses earlier the best sub-district of signal as Target cell;
(c2) system attempts reading target cell system information, checks whether this sub-district satisfies the resident condition in sub-district, if satisfy, execution in step (d) is not if satisfy execution in step (c3);
(c3) judge whether all sub-districts of satisfying sub-district reselection evaluation criterion all attempted resident, if, return step (b), if not, from the sub-district of satisfying sub-district reselection evaluation criterion, choose next sub-district as Target cell, return step (c2).
Further, said method also can have following characteristics: described step (c2) satisfies the resident condition in sub-district as Target cell, and user terminal judges whether oneself satisfies the access conditions of Target cell earlier, if, execution in step (d) again, otherwise execution in step (c3).
Further, said method also can have following characteristics: described user terminal is the access conditions that judges whether to satisfy described Serving cell according to oneself access grade.
Further, said method also can have following characteristics: described user terminal is by attempting reading target cell system information, checks whether this sub-district satisfies the resident condition in sub-district.
The access failure information of the Serving cell of the method for the invention by preserving access failure and be the method for the Serving cell setting timer of access failure can preferentially be selected other available cell when the access failure of sub-district; Further, behind gravity treatment to a sub-district,, also to carry out the access control inspection, make that also the efficient of sub-district gravity treatment is higher, thereby reach better sub-district gravity treatment result, solve the problem that the gravity treatment of original sub-district exists except carrying out the inspection of the resident condition in sub-district.
Description of drawings
Fig. 1 is the gravity treatment flow chart behind the access failure of sub-district in the prior art;
Fig. 2 is the flow chart that carries out gravity treatment behind the access failure of embodiment of the invention sub-district.
Embodiment
Fig. 2 is one embodiment of the invention cell re-selection procedure figure, and it mainly adopts timer and access failure cell list dynamically to preserve the relevant information of access failure sub-district, with the gravity treatment of control to Serving cell.Step is as follows:
In addition, after step 220 is access failure timer of cell setting, the access failure timer then after, with the access failure information deletion of this access failure sub-district.At this moment, as UE chosen can be resident the sub-district, then gravity treatment finishes.Also carrying out reuse adoption process as UE, it is just passable then only to need to carry out original flow process.That is, attempt residing in the sub-district that the next one satisfies sub-district reselection evaluation criterion by original order, when these sub-districts all can't be resident, can rebuild reselection list, the access failure sub-district of this resurrection at this moment can add, and then assesses and resident trial.
Certainly, timer then after, behind the access failure information deletion with this access failure sub-district, also whether the AC that can reexamine UE earlier satisfies the access conditions of this access failure sub-district, if, then resident to this sub-district and initiate the sub-district and insert, this gravity treatment finishes, otherwise continues former gravity treatment process.
The above only be the preferable specific implementation of the present invention, but protection scope of the present invention is not limited to therewith; any people who is familiar with 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.
Claims (8)
1, the method for re-selecting cell behind the access failure of a kind of sub-district is used for carrying out method of cell reselection after user terminal inserts the sub-district failure, may further comprise the steps:
When (a) user terminal carries out running into access failure when the sub-district is inserted, write down the information of the Serving cell of this access failure;
(b) user terminal makes up the Serving cell that removes all access failures that write down when tabulation is measured in the Serving cell gravity treatment, and the triggering cell gravity treatment is measured then;
(c) user terminal is assessed the Serving cell in the reselection measurements, from the Serving cell that satisfies sub-district reselection evaluation criterion, choose one successively, judge whether it satisfies the resident condition in sub-district,, carry out next step if there is the Serving cell that satisfies the resident condition in sub-district;
(d) resident laying equal stress on to this Serving cell newly initiated the Serving cell access, and this gravity treatment finishes.
2, the method for claim 1 is characterized in that, access failure cell list of initialization when described step (a) begins in system before, and its content is empty; The access failure information of access failure sub-district described in the described step (a) is kept in this access sub-district failure tabulation.
3, the method for claim 1, it is characterized in that, described step (a) also is provided with the access failure timer of a correspondence when the service cell information of the described access failure of record, this access failure timer then after, the service cell information deletion of the access failure that it is corresponding.
4, method as claimed in claim 3 is characterized in that, when described access failure timer then, after the service cell information deletion of the access failure that it is corresponding, user terminal judge current whether chosen can be resident the sub-district, if then directly finish, otherwise, whether the access grade that reexamines this terminal satisfies the access conditions of this access failure sub-district, if, then resident to this sub-district and initiate the sub-district and insert, this gravity treatment finishes, otherwise continues original reuse adoption process.
5, the method for claim 1 is characterized in that, described step (c) further may further comprise the steps:
(c1) user terminal is assessed the measurement result of abutting subdistrict, and record satisfies the sub-district of sub-district reselection evaluation criterion and by the ordering of the quality of signal quality, therefrom chooses earlier the best sub-district of signal as Target cell;
(c2) system attempts reading target cell system information, checks whether this sub-district satisfies the resident condition in sub-district, if satisfy, execution in step (d) is not if satisfy execution in step (c3);
(c3) judge whether all sub-districts of satisfying sub-district reselection evaluation criterion all attempted resident, if, return step (b), if not, from the sub-district of satisfying sub-district reselection evaluation criterion, choose next sub-district as Target cell, return step (c2).
6, method as claimed in claim 5 is characterized in that, described step (c2) satisfies the resident condition in sub-district as Target cell, user terminal judges whether oneself satisfies the access conditions of Target cell earlier, if, execution in step (d) again, otherwise execution in step (c3).
7, method as claimed in claim 6 is characterized in that, described user terminal is the access conditions that judges whether to satisfy described Serving cell according to oneself access grade.
8, the method for claim 1 is characterized in that, described user terminal is by attempting reading target cell system information, checks whether this sub-district satisfies the resident condition in sub-district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100724600A CN100562168C (en) | 2006-04-13 | 2006-04-13 | The method of re-selecting cell behind the access failure of a kind of sub-district |
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| CNB2006100724600A CN100562168C (en) | 2006-04-13 | 2006-04-13 | The method of re-selecting cell behind the access failure of a kind of sub-district |
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| CN101056455A true CN101056455A (en) | 2007-10-17 |
| CN100562168C CN100562168C (en) | 2009-11-18 |
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| WO2011035716A1 (en) * | 2009-09-23 | 2011-03-31 | 华为技术有限公司 | Cell reselection control method, base station controller and mobile station |
| CN102088744A (en) * | 2009-12-08 | 2011-06-08 | 上海摩波彼克半导体有限公司 | Method for realizing quick cell reselection for mobile equipment in mobile communication system |
| CN102238751A (en) * | 2010-04-22 | 2011-11-09 | 联芯科技有限公司 | Method, device and system for improving random access success rate |
| CN103024868A (en) * | 2011-09-20 | 2013-04-03 | 华为技术有限公司 | Method for accessing control terminal to shared network and access network element |
| CN101932048B (en) * | 2009-06-26 | 2013-07-10 | 联芯科技有限公司 | Method and device for cell reselection among multi-mode terminal modes |
| WO2013189391A2 (en) * | 2013-05-29 | 2013-12-27 | 中兴通讯股份有限公司 | Network access control method and mobile terminal |
| WO2014019199A1 (en) * | 2012-08-02 | 2014-02-06 | 华为技术有限公司 | Terminal, and processing method after access failure thereof |
| CN105101322A (en) * | 2014-05-22 | 2015-11-25 | 西安中兴新软件有限责任公司 | Method for selecting community and user device |
| CN105142190A (en) * | 2015-08-11 | 2015-12-09 | 小米科技有限责任公司 | Network cell reselection method and device |
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- 2006-04-13 CN CNB2006100724600A patent/CN100562168C/en active Active
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| CN101932048B (en) * | 2009-06-26 | 2013-07-10 | 联芯科技有限公司 | Method and device for cell reselection among multi-mode terminal modes |
| WO2011035716A1 (en) * | 2009-09-23 | 2011-03-31 | 华为技术有限公司 | Cell reselection control method, base station controller and mobile station |
| CN102088744A (en) * | 2009-12-08 | 2011-06-08 | 上海摩波彼克半导体有限公司 | Method for realizing quick cell reselection for mobile equipment in mobile communication system |
| CN102238751A (en) * | 2010-04-22 | 2011-11-09 | 联芯科技有限公司 | Method, device and system for improving random access success rate |
| CN102238751B (en) * | 2010-04-22 | 2014-11-12 | 联芯科技有限公司 | Method, device and system for improving random access success rate |
| CN103024868B (en) * | 2011-09-20 | 2015-09-09 | 华为技术有限公司 | A kind of method of control terminal access shared network and access network elements |
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