CN101827407A - Method and terminal for implementing cell reselection - Google Patents
Method and terminal for implementing cell reselection Download PDFInfo
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- CN101827407A CN101827407A CN201010102978A CN201010102978A CN101827407A CN 101827407 A CN101827407 A CN 101827407A CN 201010102978 A CN201010102978 A CN 201010102978A CN 201010102978 A CN201010102978 A CN 201010102978A CN 101827407 A CN101827407 A CN 101827407A
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Abstract
The invention discloses a method and a terminal for implementing cell reselection. The method is used for implementing the cell reselection for the terminal which can support a first network and a second network and currently resides in a cell under the first network. The method comprises that: under the condition that cell reselection and evaluation are performed on the terminal, the terminal judges whether the signal strengths of the current resident cell and a neighboring cell of the resident cell under the first network meet the predetermined requirements in a predetermined cycle; and the terminal determines whether to start system measurement for the cell under the second network and whether to reselect the cell under the second network according to the judgment result. The method can reasonably control the start of different system measurement on the premise of keeping services normal, and avoid the unnecessary different system measurement so as to reduce the times of reselection between the systems, reduce the adverse effect of cross-system cell reselection on terminal services, effectively reduce call loss, improve the success rate of the services, lighten the processing burden of the terminal and reduce the power consumption of the terminal.
Description
Technical field
The present invention relates to the communications field, relate in particular to the implementation method and the terminal of a kind of sub-district gravity treatment.
Background technology
At present, dual-mode terminal (or multimode terminal) has obtained extensive use on market, and these terminals can be supported two or more network types, can reside in the sub-district under the network of arbitrary type of its support, and utilize this network to communicate.
When terminal resides in the sub-district under wherein a kind of network of supporting, terminal can detect the signal strength signal intensity of the network under the current persistent district, also can detect the signal strength signal intensity of other networks of this terminal support simultaneously, promptly, need carry out systematic survey to each network, and judge whether to carry out gravity treatment according to measuring results.
Usually, when terminal is carried out the sub-district gravity treatment, the systematic survey cycle of a plurality of networks of terminal support is different, and, often can not be reported to the high level of terminal by the physical layer of terminal at the systematic survey of heterogeneous networks, that is to say that the measuring results of heterogeneous networks is the high level of incoming terminal simultaneously often.
Fig. 1 is the sequential chart that the measuring results of heterogeneous networks reports in the correlation technique.Suppose that terminal can support first network and second network, current terminal resides in a sub-district under first network, as shown in Figure 1, the high level of terminal constantly can receive the measurement result that first network reports at T1, T3 and T5, constantly can receive the measurement result that second network reports at T2 and T4.In Fig. 1, at T1 constantly, when terminal received the measuring results of first network, the signal strength signal intensity of the current resident sub-district of terminal can reach the signal strength signal intensity requirement, so terminal does not need to carry out the sub-district gravity treatment.But, T1 constantly and T2 constantly between, the signal strength signal intensity of the current persistent district of terminal does not satisfy the signal strength signal intensity requirement, therefore, terminal need be carried out alien-frequency district and be measured (promptly, measure other outer sub-districts of current persistent district under first network), different system cell measures (that is, measuring the sub-district under second network).
But, under situation shown in Figure 1, at T2 constantly, the terminal high level can at first be received the measuring results of second network, at this moment, determine the Target cell of gravity treatment a plurality of sub-districts of measuring results from second network under that terminal can be at first sends according to second network, and residently arrive this sub-district, and can't continue to reside in the sub-district under first network.If the overall signal of first network is better than the overall signal situation of second network at this moment, afterwards, terminal also needs to return first network from second network reselection, not only increased the complexity of handling, and can not guarantee that terminal preferentially resides in the better network of signal, influences the quality of service of terminal.
Particularly, present employed dual-mode terminal generally can be supported TD SDMA (TimeDivision-Synchronous Code Division Multiple Access, abbreviate TD-SCDMA as) network and global system for mobile communications (Global System for Mobile Communications, abbreviate GSM as) network, at the TD-SCDMA network networking initial stage, in order to give full play to the high and good advantage of the GSM network coverage of TD-SCDMA network rate, need be under the good situation of TD-SCDMA signal, make terminal reside in the TD-SCDMA network, and under the situation of TD-SCDMA poor signal, reside in the GSM network, at this moment, need realize seamlessly transitting between 3G and the 2G network by the gravity treatment between the different system.
Usually, different system gravity treatment (for example, the gravity treatment between the sub-district of the sub-district of TD-SCDMA network and gsm system network) relates to different system synchronization, read apparatus broadcasting, carries out processes such as route district and location area updating, therefore need take the long period.And in different system reuse adoption process, may not receive paging or the request of can't accepting business.Therefore, in order to reduce call loss and to improve service success rate, need reduce the number of times of different system gravity treatment as far as possible.
For the dual-mode terminal of supporting TD-SCDMA network and GSM network, under the TD-SCDMA system, network is by the system message parameter S
IntraSearch, S
InterSearchAnd S
SearchRATControl the startup that co-frequency cell, alien-frequency district and different system cell measure respectively and stop.Generally speaking, by these system parameterss suitably are set, can make terminal when Serving cell signal variation, preferential gravity treatment is to the TD-SCDMA sub-district.
But, the measuring results of 3G network and 2G network is the high level of incoming terminal simultaneously often, for example, under situation shown in Figure 1, even there is the sub-district that is fit in the 3G network, terminal also at first gravity treatment increased unnecessary different system gravity treatment to the sub-district of different system (second network).Terminal for supporting other networks similar problem can occur equally.
Unnecessary different system gravity treatment can occur at cell reselection process in the correlation technique and increase the problem of terminal processes burden, not propose effective solution at present as yet.
Summary of the invention
Unnecessary different system gravity treatment can occur at cell reselection process in the correlation technique and increase the problem of terminal processes burden, the present invention proposes the implementation method and the terminal of a kind of sub-district gravity treatment, can avoid unnecessary different system cell gravity treatment, reduce the processing burden of terminal.
According to an aspect of the present invention, provide the implementation method of a kind of sub-district gravity treatment, be used for supporting first network and second network and the current terminal that resides in a sub-district under first network to realize the sub-district gravity treatment.
Implementation method according to sub-district of the present invention gravity treatment comprises: carry out in terminal under the situation of sub-district reselection evaluation, terminal judges with predetermined period whether the signal strength signal intensity of current persistent district and the adjacent sub-district of persistent district under first network satisfies pre-provisioning request; Terminal determines whether to start to the systematic survey of the sub-district under second network and the sub-district under gravity treatment second network whether according to judged result.
Particularly, whether the signal strength signal intensity of terminal judges persistent district and the persistent district adjacent sub-district under first network satisfies pre-provisioning request comprises: terminal is obtained the signal strength parameter of persistent district and adjacent sub-district, and whether the signal strength parameter of judging persistent district and adjacent sub-district is greater than the signal strength parameter threshold value in the pre-provisioning request; For each sub-district in adjacent sub-district and the persistent district, under the situation of signal strength parameter greater than the signal strength parameter threshold value of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request.
On the other hand, whether the signal strength signal intensity of terminal judges persistent district and the persistent district adjacent sub-district under first network satisfies pre-provisioning request and further comprise: terminal is obtained persistent district and adjacent sub-district side-play amount and signal strength parameter separately; For each sub-district in adjacent sub-district and the persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district, and, under shifted signal intensity parameters the situation greater than shifted signal intensity parameters threshold value in pre-provisioning request of signal strength parameter greater than signal strength parameter threshold value and this sub-district of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request.
In addition, whether the signal strength signal intensity of terminal judges persistent district and the persistent district adjacent sub-district under first network satisfies pre-provisioning request comprises: terminal is obtained the signal strength parameter of persistent district and adjacent sub-district, and determines maximum signal strength parameter from the signal strength parameter that obtains; Under the situation of signal strength parameter greater than the signal strength parameter threshold value of maximum, judge that the signal strength signal intensity of the maximum pairing sub-district of signal strength parameter satisfies pre-provisioning request.
On the one hand, whether the signal strength signal intensity of terminal judges persistent district and the persistent district adjacent sub-district under first network satisfies pre-provisioning request comprises: terminal is obtained persistent district and adjacent sub-district side-play amount and signal strength parameter separately again; For each sub-district in adjacent sub-district and the persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district; From the signal strength parameter that obtains and shifted signal intensity parameters, determine maximum signal strength parameter or maximum shifted signal intensity parameters, and determine the maximum pairing sub-district of signal strength parameter or determine the maximum pairing sub-district of shifted signal intensity parameters; Under the signal strength parameter of the sub-district of determining the situation of shifted signal intensity parameters, judge that the signal strength signal intensity of the sub-district of determining satisfies pre-provisioning request greater than the shifted signal intensity parameters threshold value in the pre-provisioning request greater than signal strength parameter threshold value and the sub-district determined.
Wherein, for persistent district under first network adjacent sub-district and each sub-district in the persistent district, signal strength parameter is the S value of this sub-district.
And, for persistent district under first network adjacent sub-district and each sub-district in this persistent district, the shifted signal intensity parameters is the R value of this sub-district, and wherein, the R value of persistent district is the deviant sum of the signal strength parameter and the persistent district of persistent district; For the arbitrary adjacent sub-district of persistent district, the R value of arbitrary sub-district is the absolute value of difference of the deviant of the signal strength parameter of this sub-district and this sub-district.
And, terminal according to judged result determine whether to start to the systematic survey of the sub-district under second network and whether the sub-district under gravity treatment second network comprise: in judged result is that the signal strength signal intensity of any at least one sub-district in the adjacent sub-district of persistent district and persistent district satisfies under the situation of pre-provisioning request, determine not start systematic survey, and determine the sub-district under not gravity treatment second network the sub-district under second network.
According to a further aspect in the invention, provide a kind of terminal, terminal can be supported first network and second network, and this terminal can realize the sub-district gravity treatment under the current situation that resides in a sub-district under first network.
Terminal according to the present invention comprises: judge module, be used for carrying out under the situation of sub-district reselection evaluation in terminal, and terminal judges with predetermined period whether the signal strength signal intensity of current persistent district and the adjacent sub-district of persistent district under first network satisfies pre-provisioning request; Determination module is used for judged result according to judge module and determines whether to start to the systematic survey of the sub-district under second network and the sub-district under gravity treatment second network whether.
Particularly, judge module is used to obtain the signal strength parameter of persistent district and adjacent sub-district, and whether the signal strength parameter of judging persistent district and adjacent sub-district is greater than the signal strength parameter threshold value in the pre-provisioning request; And,, under the situation of signal strength parameter greater than the signal strength parameter threshold value of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request for each sub-district in adjacent sub-district and the persistent district.
And judge module is further used for obtaining persistent district and adjacent sub-district side-play amount and signal strength parameter separately; For each sub-district in adjacent sub-district and the persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district, and, under shifted signal intensity parameters the situation greater than shifted signal intensity parameters threshold value in pre-provisioning request of signal strength parameter greater than signal strength parameter threshold value and this sub-district of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request.
Preferably, for each sub-district in adjacent sub-district and the persistent district, signal strength parameter is the S value of this sub-district.
And for each sub-district in adjacent sub-district and the persistent district, the shifted signal intensity parameters is the R value of this sub-district, and wherein, the R value of persistent district is the deviant sum of the signal strength parameter and the persistent district of persistent district; For the arbitrary adjacent sub-district of persistent district, the R value of arbitrary sub-district is the absolute value of difference of the deviant of the signal strength parameter of arbitrary sub-district and arbitrary sub-district.
In addition, it is that the signal strength signal intensity of any at least one sub-district of the adjacent sub-district of persistent district and persistent district satisfies under the situation of pre-provisioning request that determination module is used in judged result, determine not start systematic survey, and determine the sub-district under not gravity treatment second network the sub-district under second network.
The present invention all can not reach as the systematic survey that starts second network under the situation of the requirement of re-selecting cell by all the adjacent sub-districts at the Serving cell under the current residing network and this Serving cell, when not meeting the demands, the Serving cell signal strength signal intensity directly starts isosystem measurement in the prior art to second network, can under the prerequisite that the business that do not influence is normally carried out, rationally control the startup of isosystem measurement, make the sub-district of terminal under can preferentially gravity treatment current network, avoid unnecessary isosystem measurement, thereby reduced the number of times of gravity treatment between system, reduce different system synchronization in the interdepartmental system cell reselection process, read apparatus broadcasting, processing such as route district and location area updating are to the harmful effect of service that terminal receives, can effectively reduce call loss, improve service success rate, alleviate the processing burden of terminal, reduced the power consumption of terminal.
Description of drawings
Fig. 1 be according in the cell reselection process of correlation technique at the schematic diagram that causes the gravity treatment of different system that starts a plurality of network reporting system measurement results under the situation of isosystem measurement;
Fig. 2 is the flow chart according to the implementation method of the sub-district gravity treatment of the inventive method embodiment;
Fig. 3 be according in the implementation method of the sub-district gravity treatment of the inventive method embodiment when carrying out the sub-district gravity treatment to the startup of isosystem measurement with forbid the process chart controlled;
Fig. 4 is the block diagram according to the terminal of apparatus of the present invention embodiment.
Embodiment
Consider in the correlation technique in the sub-district reselection evaluation process that the systematic survey cycle at different networkings is inconsistent, and cause occurring the problem of unnecessary different system gravity treatment, the present invention proposes, all can not start isosystem measurement under the situation as re-selecting cell in the adjacent sub-district of the current persistent district of terminal all in current residing network, thereby can avoiding in current residing network existing under the situation of the sub-district that is fit to unnecessarily, gravity treatment reduces the processing burden of terminal to the sub-district of other networks.
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail.
Method embodiment
In the present embodiment, provide the implementation method of a kind of sub-district gravity treatment, be used for supporting first network and second network and the current terminal that resides in a sub-district under first network to realize the sub-district gravity treatment.
As shown in Figure 2, the implementation method according to the sub-district gravity treatment of present embodiment comprises:
Step S201, carry out in terminal under the situation of sub-district reselection evaluation, the adjacent sub-district that terminal is judged persistent district current under first network and persistent district with predetermined period (in this article, adjacent sub-district is meant the adjacent sub-district of persistent district under first network, these sub-districts can be as the Target cell of gravity treatment, and are geographically not necessarily adjacent with persistent district) signal strength signal intensity whether satisfy pre-provisioning request;
Step S203, terminal determines whether to start to the systematic survey of the sub-district under second network and the sub-district under gravity treatment second network whether according to judged result.
By above-mentioned processing, can all can not reach in all adjacent sub-districts of the Serving cell under the current residing network and this Serving cell as the systematic survey that starts second network under the situation of the requirement of re-selecting cell, when not meeting the demands, the Serving cell signal strength signal intensity directly starts isosystem measurement in the prior art to second network, the present invention can rationally control the startup of isosystem measurement, make the sub-district of terminal under can preferentially gravity treatment current network, avoid unnecessary isosystem measurement, thereby reduced the number of times of gravity treatment between system, alleviate the processing burden of terminal, reduced the power consumption of terminal.
Wherein, when whether the signal strength signal intensity in persistent district under terminal judges first network and the adjacent sub-district of persistent district under first network satisfies pre-provisioning request, terminal is obtained the signal strength parameter of persistent district and adjacent sub-district, and whether the signal strength parameter of judging persistent district and adjacent sub-district is greater than the signal strength parameter threshold value in the pre-provisioning request; For the adjacent sub-district of persistent district and each sub-district in the persistent district, under the situation of signal strength parameter greater than the signal strength parameter threshold value of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request.
Preferably, ping-pong occurs, can also further consider the shifted signal intensity parameters after each sub-district side-play amount for fear of the sub-district gravity treatment.Particularly, terminal is obtained the adjacent sub-district side-play amount and the signal strength parameter separately of persistent district and persistent district; For the adjacent sub-district of persistent district and each sub-district in the persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district, and, under shifted signal intensity parameters the situation greater than shifted signal intensity parameters threshold value in pre-provisioning request of signal strength parameter greater than signal strength parameter threshold value and this sub-district of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request.
For the ease of directly determining re-selecting cell, when whether the signal strength signal intensity of the adjacent sub-district under first network satisfies pre-provisioning request at terminal judges persistent district and persistent district, can obtain the signal strength parameter of persistent district and adjacent sub-district, and from the signal strength parameter that obtains, determine maximum signal strength parameter; Under the situation of signal strength parameter greater than the signal strength parameter threshold value of maximum, judge that the signal strength signal intensity of the maximum pairing sub-district of signal strength parameter satisfies pre-provisioning request.
If consider the shifted signal intensity parameters, when then whether the signal strength signal intensity of the adjacent sub-district under first network satisfies pre-provisioning request at terminal judges persistent district and persistent district, can obtain persistent district and adjacent sub-district side-play amount and signal strength parameter separately; For each sub-district in adjacent sub-district and the persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district; From the signal strength parameter that obtains and shifted signal intensity parameters, determine maximum signal strength parameter or maximum shifted signal intensity parameters, and determine the maximum pairing sub-district of signal strength parameter or determine the maximum pairing sub-district of shifted signal intensity parameters; Under the signal strength parameter of the sub-district of determining the situation of shifted signal intensity parameters, judge that the signal strength signal intensity of the sub-district of determining satisfies pre-provisioning request greater than the shifted signal intensity parameters threshold value in the pre-provisioning request greater than signal strength parameter threshold value and the sub-district determined.
Particularly, suppose to have in first network sub-district A, sub-district B and three sub-districts of sub-district C, the current sub-district A that resides in of terminal, wherein, the signal strength parameter size of sub-district A is 10, the side-play amount of sub-district A is 1, the signal strength parameter size of sub-district B is 13, the side-play amount of sub-district B is 3, and the signal strength parameter size of sub-district C is 13, and the side-play amount of sub-district C is 1, like this, the shifted signal intensity parameters size of sub-district A is 10+1=11, and the shifted signal intensity parameters size of sub-district B is 13-3=10, and the shifted signal intensity parameters size of sub-district C is 13-1=12.
If the signal strength parameter threshold value is 11, shifted signal intensity parameters threshold value also is 11, at this moment, the signal strength signal intensity of sub-district A can not meet the demands, the signal strength parameter of sub-district B can meet the demands, but the shifted signal intensity parameters can not meet the demands, the signal strength parameter of sub-district C and shifted signal intensity parameters all can meet the demands, therefore, can be with sub-district C as re-selecting cell, and determine systematic survey (that is, forbidding isosystem measurement) not to be carried out in the sub-district under second network, and the sub-district under not gravity treatment second network.
And under terminal only started situation to the systematic survey of the adjacent sub-district of persistent district and persistent district, terminal was determined the sub-district of signal strength signal intensity maximum in persistent district and the adjacent sub-district according to measuring results; In the sub-district of signal strength signal intensity maximum is under the situation of persistent district, and terminal stops the sub-district gravity treatment, continues to reside in current Serving cell; In the sub-district of signal strength signal intensity maximum is under the situation of a sub-district in the adjacent sub-district, terminal with this sub-district as re-selecting cell.
In addition, when whether the signal strength signal intensity of judging persistent district and adjacent sub-district meets the demands, except (for example considering signal strength parameter, under the 3G system, this parameter can be the S value) the basis on (for example further consider the shifted signal intensity parameters, under the 3G system, this parameter can be the R value), perhaps (for example only consider signal strength parameter, the S value) outside, can also (for example only consider the shifted signal intensity parameters, the R value) the current resident Serving cell and the signal strength signal intensity of adjacent sub-district are judged, as long as the shifted signal intensity parameters (for example, the R value) of the arbitrary sub-district in persistent district and the adjacent sub-district is higher than predetermined value, then determine not carry out isosystem measurement, that is the sub-district under not gravity treatment second network.
To be that example is described in detail with the terminal of supporting TD-SCDMA and two kinds of networks of GMS below.
In the prior art, reside in terminal under the situation of TD-SCDMA sub-district,, can not guarantee that by the system message configuration the preferential gravity treatment of terminal is to other alien frequencies TD-SCDMA sub-district if network environment is comparatively complicated.When (residing in the TD-SCDMA sub-district) under terminal resides in 3G network, according to agreement, be T the measuring period of alien-frequency district (the adjacent sub-district of current resident Serving cell under the 3G network)
MeasureNTDD* N
Freq, wherein, N
FreqThe frequency number of the alien-frequency district of expression network configuration, T
MeasureNTDDExpression Serving cell measuring period.The frequency number of iso-frequency adjacent community is many more, and its measuring period will be long more.And be and corresponding fixed value of discontinuous reception (DRX) cycle the measuring period of the different system measuring period of sub-district under the 2G system (that is, to).So, when the frequency number of iso-frequency adjacent community under the 3G network is a lot, the alien-frequency district measuring period of the situation greater than different system cell may appear, the report cycle of the measuring results of 3G network can be long, even the adjacent sub-district of the TD-SCDMA that existence is fit in the 3G network, terminal also has very big possibility gravity treatment to different system cell.Although at present can be by avoiding this problem the measuring period that shortens alien-frequency district, but this mode can influence the terminal power saving performance, and, in situation shown in Figure 1, that is, and under the measuring results of first network and second network reports much at one situation, terminal still might gravity treatment arrive different system cell, therefore, the mode that shortens the measuring period of alien-frequency district only can reduce the probability of gravity treatment to different system cell limitedly, can not effectively address this problem.
According to the relevant regulations in the present agreement, the condition that starts isosystem measurement is: S
x≤ S
SearchRATAnd the condition of forbidding isosystem measurement is: S
x＞S
SearchRATWherein, S
xBe the S value of persistent district, that is, and the signal strength parameter size of persistent district, S
SearchRATBe the signal strength parameter size that requires.
According to this condition, the signal strength signal intensity of current resident TD-SCDMA sub-district is only depended in the startup of isosystem measurement and forbidding.And may exist signal also to be fit to the adjacent sub-district of TD-SCDMA of gravity treatment by force in the residing network environment of terminal this moment.As preceding, under the condition that the adjacent sub-district of reeligible TD-SCDMA is arranged, if start isosystem measurement, unnecessary different system gravity treatment will appear, and the isosystem measurement cycle under the TD-SCDMA iso-frequency adjacent community situation of measuring period, the probability of this different system gravity treatment can further increase.
Under 3G network, for the adjacent sub-district of persistent district and each sub-district in the persistent district, signal strength parameter is the S value of this sub-district, and the shifted signal intensity parameters is the R value of this sub-district.
In the present embodiment, the condition that starts isosystem measurement can be configured to S
N, max≤ S
SearchRAT, and will forbid that the condition of isosystem measurement is configured to S
N, max＞S
SearchRAT
Under the situation of considering the shifted signal intensity parameters, the condition that starts isosystem measurement can be S
N, max≤ S
SearchRATAnd R
N, max≤ R
s, and forbid that the condition of isosystem measurement is S
N, max＞S
SearchRATOr R
N, max＞R
s
Wherein, Rn, max represent the maximum R value that all allow the adjacent sub-district of resident TD-SCDMA, and Sn, max represent the S value of the adjacent sub-district that this R value is maximum.S
SearchRATBe signal strength parameter threshold value, R
sBe shifted signal intensity parameters threshold value, alternatively, R
sCan be the R value of persistent district.Preferably, the cell signal strength of calculating S value and R value institute foundation is the last adjacent cell measurement result.
That is to say, in the present embodiment, have only the value and the R value of all TD-SCDMA sub-districts all not meet the demands under the situation of (being lower than threshold value separately), just start isosystem measurement, if have the R value of any one adjacent sub-district to meet the demands or the S value meets the demands, then do not start isosystem measurement, thus the sub-district under can gravity treatment 2G network.
Preferably, terminal can travel through its Serving cell and adjacent sub-district, and, before the signal strength parameter of adjacent sub-district and/or shifted signal intensity parameters are judged, can judge at first that whether this sub-district is the sub-district of access (barred) of being under an embargo, if judged result can judge then for not whether the frequency of this sub-district is under an embargo, this frequency is not under an embargo, and then continues the signal strength parameter and/or the shifted signal intensity parameters of this sub-district of judgement and judges; If this sub-district inserts the sub-district of (barred) for the terminal that is under an embargo or the frequency of this sub-district is under an embargo, determine that then this sub-district is the sub-district of re eligible not, forbids the signal strength signal intensity of this sub-district is judged, thereby avoids unnecessary judgment processing.
Describe the processing procedure of forbidding and starting in detail according to the isosystem measurement of present embodiment below in conjunction with accompanying drawing.
Fig. 3 be according in the implementation method of the sub-district gravity treatment of present embodiment when carrying out the sub-district gravity treatment to the startup of isosystem measurement with forbid the process chart controlled.Fig. 3 shows and carries out the processing procedure that signal strength signal intensity is judged after terminal resides in 3G system and triggering cell gravity treatment, wherein, terminal is at first selected the maximum sub-district of R value from persistent district and adjacent sub-district, judge afterwards whether the R value of this sub-district or S value are higher than thresholding separately, if S value or R value are higher than corresponding thresholding, then judge the sub-district that exists signal strength signal intensity to meet the demands in persistent district and the adjacent sub-district, and stop isosystem measurement.As shown in Figure 3, specifically may further comprise the steps:
Step S31 obtains Serving cell and all start the measurement result of the adjacent sub-district of measuring of TD-SCDMA;
Step S32, the record current service cell is best TD-SCDMA sub-district;
Afterwards, can travel through the adjacent sub-districts of all TD-SCDMA, specifically can point to each sub-district in the adjacent cell list successively, thereby judge that successively concrete steps are as follows by pointer:
Step S33, the sub-district of the original position in the pointed TD-SCDMA adjacent cell list;
Step S34, the sub-district that reading pointer points to;
Step S35 judges that whether this sub-district is by barred; If judged result is for being, execution in step S39 then; Otherwise execution in step S36;
Step S36 judges whether this subdistrict frequency point is under an embargo (forbidden), if judged result is for being, and execution in step S39 then; Otherwise execution in step S37 (, but can judge whether this sub-district is persistent district) by step S35 and step S36;
Step S37 judges whether the R value of this sub-district is higher than the R value of known maximum; If judged result is for being, execution in step S38 then, otherwise execution in step S39;
Step S38, writing down this sub-district is best TD-SCDMA sub-district, and execution in step S39;
Step S39, next sub-district in the pointed tabulation, so that afterwards next sub-district is judged, if the sub-district of current judgement is last sub-district in the adjacent cell list, promptly, pointer has arrived the ending of adjacent cell list, and whether the S value of the best TD-SCDMA sub-district that obtains before then judging is smaller or equal to default thresholding S
SearchRAT, and whether the R value of judging this sub-district is smaller or equal to default thresholding R
sBe then to start isosystem measurement if judged result is; If the S value of this sub-district is higher than default thresholding S
SearchRATOr the R value of this sub-district is higher than and equals default thresholding R
s, then do not start isosystem measurement.
Except elder generation shown in Figure 3 determine the sub-district that the R value is maximum so that determine the S value of this sub-district and the processing mode of the relation between R value and the respective threshold, can also judge one by one the R value and the S value of persistent district and adjacent sub-district in other way, for example, can be directly the S value of each sub-district and R value and thresholding compared and at first do not determine the sub-district of R value maximum, but whether as long as can determine to exist in all persistent districts the relation of S value and R value and respective threshold to satisfy the sub-district that does not start the isosystem measurement entry condition, concrete judgment mode this paper enumerates no longer one by one.
By means of above-mentioned processing, can all can not reach in all adjacent sub-districts of the Serving cell under the current residing network and this Serving cell as the systematic survey that starts second network under the situation of the requirement of re-selecting cell, when not meeting the demands, the Serving cell signal strength signal intensity directly starts isosystem measurement in the prior art to second network, can under the prerequisite that the business that do not influence is normally carried out, rationally control the startup of isosystem measurement, make the sub-district of terminal under can preferentially gravity treatment current network, avoid unnecessary isosystem measurement, thereby reduced the number of times of gravity treatment between system, reduce different system synchronization in the interdepartmental system cell reselection process, read apparatus broadcasting, processing such as route district and location area updating are to the harmful effect of service that terminal receives, can effectively reduce call loss, improve service success rate, alleviate the processing burden of terminal, reduced the power consumption of terminal.
Device embodiment
In the present embodiment, provide a kind of terminal.
Can support first network and second network according to the terminal of present embodiment, and, can under the current situation that resides in a sub-district under first network, realize the sub-district gravity treatment.
As shown in Figure 4, the terminal according to present embodiment comprises:
By above-mentioned terminal, can all can not reach in all adjacent sub-districts of the Serving cell under the current residing network and this Serving cell as the systematic survey that starts second network under the situation of the requirement of re-selecting cell, when not meeting the demands, the Serving cell signal strength signal intensity directly starts isosystem measurement in the prior art to second network, can rationally control the startup of isosystem measurement, make the sub-district of terminal under can preferentially gravity treatment current network, avoid unnecessary isosystem measurement, thereby reduced the number of times of gravity treatment between system, alleviate the processing burden of terminal, reduced the power consumption of terminal.
Particularly, judge module 41 can be used for obtaining the signal strength parameter of persistent district and adjacent sub-district, and whether the signal strength parameter of judging persistent district and adjacent sub-district is greater than the signal strength parameter threshold value in the pre-provisioning request; And,, under the situation of signal strength parameter greater than the signal strength parameter threshold value of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies pre-provisioning request for each sub-district in adjacent sub-district and the persistent district.
And for each sub-district in adjacent sub-district and the persistent district, signal strength parameter can be the S value of this sub-district.And for each sub-district in adjacent sub-district and the persistent district, the shifted signal intensity parameters can be the R value of this sub-district, and wherein, the R value of persistent district is the deviant sum of the signal strength parameter and the persistent district of persistent district; For the arbitrary adjacent sub-district of persistent district, the R value of this sub-district is the absolute value of difference of the deviant of the signal strength parameter of this sub-district and this sub-district.
In addition, the signal strength signal intensity that determination module 42 is used in any at least one sub-district in the adjacent sub-district that judged result is persistent district and persistent district satisfies under the situation of pre-provisioning request, determine not start systematic survey, and determine the sub-district under not gravity treatment second network the sub-district under second network.
In addition, equally can execution graph 2 and processing shown in Figure 3 according to the terminal of present embodiment, judge module both can adopt mode shown in Figure 3 to carry out the judgement of signal strength signal intensity, but also can adopt the mode of direct comparison or other modes to judge whether to exist signal strength signal intensity to satisfy the persistent district that does not start the isosystem measurement condition, no longer repeat here and enumerate.
In sum, by means of technique scheme of the present invention, can all can not reach in all adjacent sub-districts of the Serving cell under the current residing network and this Serving cell as the systematic survey that starts second network under the situation of the requirement of re-selecting cell, when not meeting the demands, the Serving cell signal strength signal intensity directly starts isosystem measurement in the prior art to second network, can under the prerequisite that the business that do not influence is normally carried out, rationally control the startup of isosystem measurement, make the sub-district of terminal under can preferentially gravity treatment current network, avoid unnecessary isosystem measurement, thereby reduced the number of times of gravity treatment between system, reduce different system synchronization in the interdepartmental system cell reselection process, read apparatus broadcasting, processing such as route district and location area updating are to the harmful effect of service that terminal receives, can effectively reduce call loss, improve service success rate, alleviate the processing burden of terminal, reduced the power consumption of terminal.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the implementation method of a sub-district gravity treatment is used for it is characterized in that to supporting first network and second network and the current terminal that resides in a sub-district under described first network to realize the sub-district gravity treatment described method comprises:
Carry out in described terminal under the situation of sub-district reselection evaluation, described terminal judges with predetermined period whether the signal strength signal intensity of current persistent district and the adjacent sub-district of described persistent district under described first network satisfies pre-provisioning request;
Described terminal determines whether to start to the systematic survey of the sub-district under described second network and the sub-district under described second network of gravity treatment whether according to judged result.
2. method according to claim 1 is characterized in that, whether the signal strength signal intensity of described persistent district of described terminal judges and the described persistent district adjacent sub-district under described first network satisfies described pre-provisioning request comprises:
Described terminal is obtained the signal strength parameter of described persistent district and described adjacent sub-district, and whether the signal strength parameter of judging described persistent district and described adjacent sub-district is greater than the signal strength parameter threshold value in the described pre-provisioning request;
For each sub-district in described adjacent sub-district and the described persistent district, under the situation of signal strength parameter greater than described signal strength parameter threshold value of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies described pre-provisioning request.
3. method according to claim 1 is characterized in that, whether the signal strength signal intensity of described persistent district of described terminal judges and the described persistent district adjacent sub-district under described first network satisfies described pre-provisioning request comprises:
Described terminal is obtained described persistent district and described adjacent sub-district side-play amount and signal strength parameter separately;
For each sub-district in described adjacent sub-district and the described persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district, and, under shifted signal intensity parameters the situation greater than shifted signal intensity parameters threshold value in described pre-provisioning request of signal strength parameter greater than described signal strength parameter threshold value and this sub-district of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies described pre-provisioning request.
4. method according to claim 1 is characterized in that, whether the signal strength signal intensity of described persistent district of described terminal judges and the described persistent district adjacent sub-district under described first network satisfies described pre-provisioning request comprises:
Described terminal is obtained the signal strength parameter of described persistent district and described adjacent sub-district, and determines maximum signal strength parameter from the described signal strength parameter that obtains;
Under the situation of signal strength parameter greater than described signal strength parameter threshold value of described maximum, judge that the signal strength signal intensity of the pairing sub-district of signal strength parameter of described maximum satisfies described pre-provisioning request.
5. method according to claim 1 is characterized in that, whether the signal strength signal intensity of described persistent district of described terminal judges and the described persistent district adjacent sub-district under described first network satisfies described pre-provisioning request comprises:
Described terminal is obtained described persistent district and described adjacent sub-district side-play amount and signal strength parameter separately;
For each sub-district in described adjacent sub-district and the described persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district;
From the described signal strength parameter that obtains and described shifted signal intensity parameters, determine maximum signal strength parameter or maximum shifted signal intensity parameters, and determine the pairing sub-district of signal strength parameter of described maximum or determine the pairing sub-district of shifted signal intensity parameters of described maximum;
Under the signal strength parameter of the described sub-district of determining the situation of shifted signal intensity parameters, judge that the signal strength signal intensity of the described sub-district of determining satisfies described pre-provisioning request greater than the shifted signal intensity parameters threshold value in the described pre-provisioning request greater than described signal strength parameter threshold value and the described sub-district determined.
6. according to each described method in the claim 2 to 5, it is characterized in that for the adjacent sub-district of described persistent district and each sub-district in the described persistent district, signal strength parameter is the S value of this sub-district.
7. according to claim 3 or 5 described methods, it is characterized in that, for the adjacent sub-district of described persistent district and each sub-district in the described persistent district, the shifted signal intensity parameters is the R value of this sub-district, wherein, the R value of described persistent district is the deviant sum of the signal strength parameter and the described persistent district of described persistent district; For the arbitrary adjacent sub-district of described persistent district, the R value of described arbitrary sub-district is the absolute value of difference of the deviant of the signal strength parameter of described arbitrary sub-district and described arbitrary sub-district.
8. according to each described method in the claim 1 to 5, it is characterized in that, described terminal according to judged result determine whether to start to the systematic survey of the sub-district under described second network and whether the sub-district under described second network of gravity treatment comprise:
In judged result is that the signal strength signal intensity of any at least one sub-district in the adjacent sub-district of described persistent district and described persistent district satisfies under the situation of described pre-provisioning request, determine not start systematic survey, and determine the sub-district under described second network of not gravity treatment the sub-district under described second network.
9. terminal, described terminal can be supported first network and second network, it is characterized in that, and described terminal can realize the sub-district gravity treatment under the current situation that resides in a sub-district under described first network, and described terminal comprises:
Judge module is used for carrying out under the situation of sub-district reselection evaluation in described terminal, and described terminal judges with predetermined period whether the signal strength signal intensity of current persistent district and the adjacent sub-district of described persistent district under described first network satisfies pre-provisioning request;
Determination module is used for judged result according to described judge module and determines whether to start to the systematic survey of the sub-district under described second network and the sub-district under described second network of gravity treatment whether.
10. terminal according to claim 9, it is characterized in that, described judge module is used to obtain the signal strength parameter of described persistent district and described adjacent sub-district, and whether the signal strength parameter of judging described persistent district and described adjacent sub-district is greater than the signal strength parameter threshold value in the described pre-provisioning request; And,, under the situation of signal strength parameter greater than described signal strength parameter threshold value of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies described pre-provisioning request for each sub-district in described adjacent sub-district and the described persistent district.
11. terminal according to claim 10 is characterized in that, described judge module is further used for obtaining described persistent district and described adjacent sub-district side-play amount and signal strength parameter separately; For each sub-district in described adjacent sub-district and the described persistent district, the shifted signal intensity parameters of determining this sub-district according to the signal strength parameter and the deviant of this sub-district, and, under shifted signal intensity parameters the situation greater than shifted signal intensity parameters threshold value in described pre-provisioning request of signal strength parameter greater than described signal strength parameter threshold value and this sub-district of this sub-district, judge that the signal strength signal intensity of this sub-district satisfies described pre-provisioning request.
12., it is characterized in that for each sub-district in described adjacent sub-district and the described persistent district, signal strength parameter is the S value of this sub-district according to claim 10 or 11 described terminals.
13. terminal according to claim 10, it is characterized in that, for each sub-district in described adjacent sub-district and the described persistent district, the shifted signal intensity parameters is the R value of this sub-district, wherein, the R value of described persistent district is the deviant sum of the signal strength parameter and the described persistent district of described persistent district; For the arbitrary adjacent sub-district of described persistent district, the R value of described arbitrary sub-district is the absolute value of difference of the deviant of the signal strength parameter of described arbitrary sub-district and described arbitrary sub-district.
14. according to each described terminal in the claim 9,10,11 and 13, it is characterized in that, it is that the signal strength signal intensity of any at least one sub-district of the adjacent sub-district of described persistent district and described persistent district satisfies under the situation of described pre-provisioning request that described determination module is used in judged result, determine not start systematic survey, and determine the sub-district under described second network of not gravity treatment the sub-district under described second network.
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| CN201010102978A CN101827407A (en) | 2010-01-28 | 2010-01-28 | Method and terminal for implementing cell reselection |
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| CN201010102978A CN101827407A (en) | 2010-01-28 | 2010-01-28 | Method and terminal for implementing cell reselection |
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