CN105101344A - Cell selection and cell selection control method and device - Google Patents
Cell selection and cell selection control method and device Download PDFInfo
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- CN105101344A CN105101344A CN201410193278.5A CN201410193278A CN105101344A CN 105101344 A CN105101344 A CN 105101344A CN 201410193278 A CN201410193278 A CN 201410193278A CN 105101344 A CN105101344 A CN 105101344A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses cell selection and a cell selection control method and device used for enabling idle UE to reside in different RAT(Radio Access Technology) cells so as to avoid overload of a single RAT cell. The invention provides a cell selection control method including the steps that a base station determines the corresponding relation between a plurality of frequency points and resident factors, wherein at least two frequency points of different RATs are corresponding to different resident factors; and the base station informs the corresponding relation of the frequency points and the resident factors to the UE.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of community and select and control method and device.
Background technology
In prior art, the community between the universal land radio access web (EvolvedUniversalTerrestrialRadioAccessNetwork, E-UTRAN) of evolution and other system is selected to carry out based on absolute priority mechanism.Subscriber equipment (UserEquipment, UE) when carrying out reselection evaluation to certain different frequency/different technology, need according to its priority and current service frequency priority relation (higher than, equal, lower than) distinguish and treat, between different systems, do not allow identical priority.Further, Current protocol specifies that UE can only when being provided E-UTRAN frequency or different technology frequency and this frequency had to the assessment carrying out community selection when priority by system information.
In certain geographic range, the community that may deploy multiple wireless access technology (RadioAccessTechnology, RAT) covers.One possesses the UE accessing multiple RAT ability multiple community may be detected simultaneously, it carries out community selection and gravity treatment by according to the rule introduced above, namely based on the community selection scheme of frequency priority, the a large amount of multimode UE in this geographic range may be caused all to reside on some RAT, cause Idle state UE quantity resident between different RAT unbalanced.If a large amount of Idle state UE below certain RAT initiate business at short notice in a large number, this RAT overload may be caused.
In sum, what adopt between current different RAT is the community selection scheme of absolute priority based on frequency, and the frequency priority between different RAT can not be identical, can not intersect.This configuration mode may cause a large amount of UE all to reside on some RAT, causes the Idle state UE load imbalance between different RAT, certain RAT can be caused to transship if a large amount of UE initiates business simultaneously.
Summary of the invention
Embodiments provide a kind of community to select and control method and device, in order to make Idle state UE can be balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Control method is selected in a kind of community that the embodiment of the present invention provides, and comprising:
The corresponding relation of multiple frequency and the resident factor is determined in base station, and wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
The corresponding relation of multiple frequency and the resident factor is informed to user equipment (UE) by described base station.
Pass through the method, the corresponding relation of multiple frequency and the resident factor can be informed to UE by base station, thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, and balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, the corresponding relation of multiple frequency and the resident factor is informed to UE by described base station, comprising:
The corresponding relation of multiple frequency and the resident factor by broadcast mode, or by dedicated signaling mode, is informed to UE by described base station.
Preferably, when the corresponding relation of multiple frequency and the resident factor is informed to UE by broadcast mode by described base station, the corresponding relation of multiple frequency and the resident factor is informed to UE by system information by described base station; When the corresponding relation of multiple frequency and the resident factor is informed to UE by dedicated signaling mode by described base station, described base station connects reconfiguration message by radio resource control RRC connection release message or RRC and the corresponding relation of multiple frequency and the resident factor is informed to UE.
Preferably, the method also comprises:
Described base station adjusts the resident factor corresponding to arbitrary frequency, and the corresponding relation of the resident factor after this frequency and adjustment is informed to UE.
A kind of cell selecting method that the embodiment of the present invention provides, comprising:
User equipment (UE) determines the corresponding relation of multiple frequency and the resident factor, and wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor.
Pass through the method, UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, and balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, the described resident factor is the numerical value in preset range;
Described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
Described UE, according to the order from high to low of absolute priority corresponding to each frequency, sorts to candidate cell, and selects candidate cell successively according to sequence order from high to low and judge whether the resident candidate cell to current selection;
Wherein, described UE comprises when judging whether the resident candidate cell to current selection: described UE generates a random number in described preset range, the resident factor that this random number is corresponding with the frequency at the candidate cell place of current selection compares, and judges whether the resident candidate cell to current selection according to comparative result.
Preferably, described UE judges whether the resident candidate cell to current selection according to comparative result, comprising:
When described random number is less than or equal to corresponding resident because of the period of the day from 11 p.m. to 1 a.m of the frequency at the candidate cell place of current selection, determine resident in the candidate cell of current selection; Otherwise, described UE according to next sequence of candidate cell sequence selective sequential from high to low candidate cell and judge whether resident to this candidate cell.
Preferably, described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is multiplied with the absolute priority of the frequency at this candidate cell place by described UE, using the product that obtains as assessed value corresponding to this candidate cell;
Described UE, according to the descending order of assessed value corresponding to candidate cell, selects resident candidate cell.
Preferably, described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is added with the signal quality of this candidate cell by described UE, using obtain with value as assessed value corresponding to this candidate cell;
Described UE, according to the descending order of assessed value corresponding to candidate cell, selects resident candidate cell.
Preferably, the method also comprises:
Upgrade the resident factor that arbitrary frequency is corresponding.
A kind of community device for selection controlling that the embodiment of the present invention provides, comprising:
Resident factor specifying unit, for determining the corresponding relation of multiple frequency and the resident factor, wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Notification unit, for informing to user equipment (UE) by the corresponding relation of multiple frequency and the resident factor.
By this device, the corresponding relation of multiple frequency and the resident factor is informed to user equipment (UE), thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, described notification unit specifically for:
By broadcast mode, or by dedicated signaling mode, the corresponding relation of multiple frequency and the resident factor is informed to UE.
Preferably, when the corresponding relation of multiple frequency and the resident factor is informed to UE by broadcast mode by described notification unit, the corresponding relation of multiple frequency and the resident factor is informed to UE by system information by described notification unit; When the corresponding relation of multiple frequency and the resident factor is informed to UE by dedicated signaling mode by described notification unit, described notification unit connects reconfiguration message by radio resource control RRC connection release message or RRC and the corresponding relation of multiple frequency and the resident factor is informed to UE.
Preferably, described resident factor specifying unit also for: adjust the resident factor that arbitrary frequency is corresponding;
Described notification unit also for: the corresponding relation of the resident factor after arbitrary frequency and adjustment is informed to UE.
A kind of cell selecting apparatus that the embodiment of the present invention provides, comprising:
Resident factor specifying unit, for determining the corresponding relation of multiple frequency and the resident factor, wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Gravity treatment unit, for carrying out community selection according to the corresponding relation of multiple frequency and the resident factor.
Community selection is carried out according to the corresponding relation of multiple frequency and the resident factor by this device, thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, the described resident factor is the numerical value in preset range;
Described gravity treatment unit specifically for: according to the order from high to low of absolute priority corresponding to each frequency, candidate cell is sorted, and selects candidate cell successively according to sequence order from high to low and judge whether the resident candidate cell to current selection;
Wherein, the whether resident candidate cell to current selection of described gravity treatment unit judges, comprise: described gravity treatment unit generates a random number in described preset range, the resident factor that this random number is corresponding with the frequency at the candidate cell place of current selection compares, and judges whether the resident candidate cell to current selection according to comparative result.
Preferably, described gravity treatment unit judges whether the resident candidate cell to current selection according to comparative result, comprising:
When described random number is less than or equal to corresponding resident because of the period of the day from 11 p.m. to 1 a.m of the frequency at the candidate cell place of current selection, determine resident in the candidate cell of current selection; Otherwise, described gravity treatment unit according to next sequence of candidate cell sequence selective sequential from high to low candidate cell and judge whether resident to this candidate cell.
Preferably, described gravity treatment unit specifically for:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is multiplied with the absolute priority of the frequency at this candidate cell place by described gravity treatment unit, using the product that obtains as assessed value corresponding to this candidate cell;
According to the descending order of assessed value corresponding to candidate cell, select resident candidate cell.
Preferably, described gravity treatment unit specifically for:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is added with the signal quality of this candidate cell, using obtain with value as assessed value corresponding to this candidate cell;
According to the descending order of assessed value corresponding to candidate cell, select resident candidate cell.
Preferably, described resident factor specifying unit also for: upgrade the resident factor that arbitrary frequency is corresponding.
Accompanying drawing explanation
The schematic flow sheet of a kind of community selection control method that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of cell selecting method that Fig. 2 provides for the embodiment of the present invention;
The structural representation of a kind of community device for selection controlling that Fig. 3 provides for the embodiment of the present invention;
The structural representation of a kind of cell selecting apparatus that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Embodiments provide a kind of community to select and control method and device, in order to make Idle state UE can be balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Community described in the embodiment of the present invention is selected, and can be that first community is selected, also can be cell reselection.
See Fig. 1, at network side, a kind of community that the embodiment of the present invention provides selects control method to comprise:
The corresponding relation of multiple frequency and the resident factor is determined in S101, base station, and wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
In the embodiment of the present invention, the resident factor that frequency under all RAT is corresponding can not be all identical, if so just nonsensical, such as, have three frequencies, be respectively the first frequency, the second frequency and the 3rd frequency, wherein the first frequency belongs to LTE, second frequency belongs to UMTS, and the 3rd frequency belongs to GERAN, but each self-corresponding resident factor of these three frequencies can not be identical.
The corresponding relation of multiple frequency and the resident factor is informed to user equipment (UE) by S102, described base station.
The resident factor described in the embodiment of the present invention is the parameter that UE is referenced when carrying out community and selecting.
The corresponding relation of frequency and the resident factor is informed to UE by base station, and be used to indicate UE when needs carry out community selection, the corresponding relation of reference frequency point and the resident factor carries out community selection.
Pass through the method, the corresponding relation of multiple frequency and the resident factor can be informed to UE by base station, thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, and balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
The resident factor can be RAT rank, and namely each RAT has one, and UE, for all frequencies in this RAT, uses this resident factor.The resident factor also can be frequency rank, and each frequency namely in each RAT can have a resident factor, and UE, for this frequency, uses this resident factor.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical, the corresponding resident factor of all frequencies that is under each RAT; Or, the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different, the resident factor that such as, each frequency correspondence one under a certain RAT is different, or under a certain RAT, have the resident factor that two frequency bins is corresponding identical, but the resident factor corresponding from other frequencies is different.
When all frequencies correspondences one under each RAT are resident because of the period of the day from 11 p.m. to 1 a.m: the resident factor that the frequency under different RAT is corresponding is different, such as: LTE, UMTS, GERAN be totally 3 RAT, a corresponding resident factor respectively, these three resident factors are different, but the resident factor that the resident factor that the resident factor that under LTE, each frequency is corresponding is identical, each frequency is corresponding under UMTS is identical, each frequency is corresponding under GERAN is identical.Or, the resident factor of all RAT is not unique, such as: LTE, UMTS, GERAN be totally 3 RAT, a corresponding resident factor respectively, the resident factor that frequency under LTE the is corresponding resident factor corresponding from the frequency under UMTS is different, but the resident factor corresponding to frequency under the UMTS resident factor corresponding with the frequency under GERAN is identical.
In like manner, each frequency correspondence one as each RAT is resident because of the period of the day from 11 p.m. to 1 a.m: the resident factor that different frequent points is corresponding is different; Or the resident factor that all frequencies are corresponding is not unique, and the resident factor that at least two frequency bins namely under arbitrary RAT is corresponding is different, there is the situation that the resident factor corresponding to part frequency is identical.
Preferably, the corresponding relation of multiple frequency and the resident factor is informed to UE by described base station, comprising:
The corresponding relation of multiple frequency and the resident factor by broadcast mode, or by dedicated signaling mode, is informed to UE by described base station.
Preferably, when the corresponding relation of multiple frequency and the resident factor is informed to UE by broadcast mode by described base station, the corresponding relation of multiple frequency and the resident factor is informed to UE by system information by described base station; When the corresponding relation of multiple frequency and the resident factor is informed to UE by dedicated signaling mode by described base station, described base station connects reconfiguration message by radio resource control RRC connection release message or RRC and the corresponding relation of multiple frequency and the resident factor is informed to UE.
Preferably, the method also comprises:
Described base station adjusts the resident factor corresponding to arbitrary frequency, and the corresponding relation of the resident factor after this frequency and adjustment is informed to UE.
Such as, base station according to self load condition with neighboring access technique district, can adjust the resident factor that arbitrary frequency is corresponding, and the corresponding relation of the resident factor after this frequency and adjustment is informed to UE.
Wherein, base station can according to self load condition with neighboring access technique district, adjust the resident factor that arbitrary frequency is corresponding, such as, RAT load belonging to current resident community is higher, and RAT load belonging to neighbor cell is lower, and so base station can by the resident factor of the RAT belonging to this community towards being unfavorable for resident direction adjustment, and by the resident factor of the RAT belonging to neighbor cell towards being more conducive to resident direction adjustment, to reach the object of Idle state load balancing.
Correspondingly, in end side, see Fig. 2, a kind of cell selecting method that the embodiment of the present invention provides, comprising:
S201, user equipment (UE) determine the corresponding relation of multiple frequency and the resident factor, and wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
S202, described UE carry out community selection according to the corresponding relation of multiple frequency and the resident factor.
Pass through the method, UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, and balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
The corresponding relation of the frequency described in the embodiment of the present invention and the resident factor, can be that network side informs UE, also can be pre-configured in UE side, UE can upgrade according to the corresponding relation of the notice of network side to frequency and the resident factor or self upgrades the corresponding relation of frequency and the resident factor as required.
In the embodiment of the present invention, UE only can carry out community selection according to the corresponding relation of frequency and the resident factor, also can according to the corresponding relation of frequency and the resident factor, and in conjunction with other parameters, carry out community selection, other parameters wherein said, such as: the absolute priority, cell signal quality etc. of RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, the described resident factor is the numerical value in preset range;
Described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
Described UE, according to the order from high to low of absolute priority corresponding to each frequency, sorts to candidate cell, and selects candidate cell successively according to sequence order from high to low and judge whether the resident candidate cell to current selection;
Wherein, described UE comprises when judging whether the resident candidate cell to current selection: described UE generates a random number in described preset range, the resident factor that this random number is corresponding with the frequency at the candidate cell place of current selection compares, and judges whether the resident candidate cell to current selection according to comparative result.
Preferably, described UE judges whether the resident candidate cell to current selection according to comparative result, comprising:
When described random number is less than or equal to corresponding resident because of the period of the day from 11 p.m. to 1 a.m of the frequency at the candidate cell place of current selection, determine resident in the candidate cell of current selection; Otherwise, described UE according to next sequence of candidate cell sequence selective sequential from high to low candidate cell and judge whether resident to this candidate cell.
Preferably, described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
For each candidate cell, it (also can be other compute modes that the resident factor corresponding for the frequency at this candidate cell place is multiplied with the absolute priority of the frequency at this candidate cell place by described UE, be not limited to be multiplied), using the product that obtains as assessed value corresponding to this candidate cell;
Described UE, according to the descending order of assessed value corresponding to candidate cell, selects resident candidate cell.
Preferably, described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
For each candidate cell, it (also can be other compute modes that the resident factor corresponding for the frequency at this candidate cell place is added with the signal quality of this candidate cell by described UE, be not limited to be added), using obtain with value as assessed value corresponding to this candidate cell;
Described UE, according to the descending order of assessed value corresponding to candidate cell, selects resident candidate cell.
Preferably, the method also comprises:
Upgrade the resident factor that arbitrary frequency is corresponding.
Provide illustrating of several specific embodiment below.
Embodiment 1: resident factor representation probability.
Such as, in certain a slice geographic area, some frequencies of operator deployment LTE, UMTS, GERAN totally 3 RAT, the absolute priority of LTE frequency point is set as the highest, and secondly, GERAN priority is minimum for UMTS.The resident factor corresponding for frequencies all under LTE is set to 0.5 by base station (comprising the base station of LTE, UMTS and GERAN), the resident factor corresponding for frequencies all under UMTS is set to 0.8, the resident factor corresponding for frequencies all under GERAN is set to 1, and sends to UE by broadcast.
The resident factor in this embodiment is the numerical value in preset range, and this preset range is [0,1].Certainly, this preset range also can be other number ranges, such as [10,20] or [20,30] etc., as long as the effect that can embody probability is just passable.
So, reside in the UE of this community, when carrying out selection assessment to the candidate cell of different RAT, for LTE candidate cell, resident differentiation will be carried out with probability 0.5, for UMTS candidate cell, resident differentiation will be carried out with probability 0.8, and for GERAN candidate cell, resident differentiation will be carried out with probability 1.
Candidate cell described in the embodiment of the present invention, can be the community of signal quality higher than the signal quality thresholding preset, wherein, described signal quality thresholding can be arranged according to actual needs, such as, can be set to-50dB.
Suppose that certain UE is when carrying out community and selecting, for the LTE candidate cell that absolute priority is the highest, UE generates one [0,1] random number between, compare with 0.5, if this random number is less than or equal to 0.5, then UE selects resident at this LTE candidate cell; If this random number is greater than 0.5, then the candidate cell that absolute priority comes second is assessed.If the candidate cell that current absolute priority comes second is UMTS community, then UE generates the random number between [0,1], and 0.8 compares, if this random number is less than or equal to 0.8, then this UE selects resident in this community; If this random number is greater than 0.8, then the candidate cell that absolute priority comes the 3rd is assessed.By that analogy.Select until complete community, find suitable community, carry out resident for UE.
In the embodiment of the present invention, except passing through system information broadcast mode, base station can also notify the corresponding relation of this UE frequency and the resident factor in RRC connection release message (dedicated signaling), absolute priority corresponding for each RAT in absolute priority corresponding for each RAT in resident Summing Factor RRC connection release message or system information considers by UE, carries out the selection of each frequency point cell under follow-up different RAT.
Particularly, under above-mentioned RAT, the absolute priority of frequency can send to UE in the following way:
Common signaling (i.e. system information broadcast) mode: the absolute priority information providing current service frequency in common signaling, the respective absolute priority information of other frequencies of E-UTRAN, and the respective absolute priority information of each frequency (section) of other RAT.Specifically, E-UTRAN is at the absolute priority of the cell reselection of broadcasting each frequency of eating dishes without rice or wine.These frequencies comprise the frequency of the RAT such as E-UTRA, UTRA, GERAN.Such as eNB broadcasts the absolute priority information of E-UTRA frequency in SIB3/SIB4/SIB5, the absolute priority information of UTRA frequency is broadcasted in SIB6, in SIB7, broadcast the absolute priority information of GERAN frequency, in SIB8, broadcast the absolute priority information of CDMA2000 frequency.The absolute priority of frequency uses numeral 0 ~ 7 to represent, 7 represent that priority is the highest, and 0 represents that priority is minimum.The absolute priority of the frequency of same RAT inside can be configured to identical or different.Absolute priority between the frequency of different RAT can not be identical, and it is that the absolute priority of the frequency of 6, other RAT just can not be configured to 6 again that certain frequency of such as E-UTRA is configured to priority.In addition, the frequency absolute priority between different RAT can not mutual height, so as not to occur ping-pong reselection.
Dedicated signaling mode: the absolute priority list of carrying other system frequency in RRC Connection Release (RRCConnectionRelease) message alternatively, and the term of validity timer length of correspondence.Corresponding information element content, compared with the information provided in system information, has lacked the absolute priority of service frequency, with the addition of absolute priority timer effective time T320.Specifically, when E-UTRAN discharges UE connection time, can issue the cell reselection information that UE uses at Idle state in RRCConnectionRelease message, this wherein can comprise the absolute priority information of each RAT frequency.After UE receives the absolute priority information of the frequency issued by RRCConnectionRelease message, the frequency absolute priority information in system broadcasts will be ignored.When meeting certain condition, the frequency absolute priority information that deletion RRCConnectionRelease message issues by UE, such as when UE enters connected state, or the term of validity of these frequency absolute priority information is crossed (T320 time-out).
Embodiment 2: the resident factor is multiplied with priority.
Such as, in certain a slice geographic area, some frequencies of operator deployment LTE, UMTS, GERAN totally 3 RAT, the absolute priority of UMTS frequency is set as the highest (being such as 6), secondly (being such as 5), the absolute priority of GERAN frequency is minimum (being such as 4) for the absolute priority of LTE frequency point.The resident factor corresponding for frequencies all under UMTS is set to 0.8 by base station (comprising the base station of LTE, UMTS and GERAN), the resident factor corresponding for frequencies all under LTE is set to 1, the resident factor corresponding for frequencies all under GERAN is set to 1, and informs UE by broadcast.
Reside in the UE (the resident factor can be obtained and use) of the highest version of this community, when carrying out selection assessment to the candidate cell of different RAT, for UMTS candidate cell, calculating its assessed value is 6*0.8=4.8, for LTE candidate cell, calculating its assessed value is 5*1=5, and for the candidate cell of GERAN, calculating its assessed value is 4*1=4.Now, the highest for the UE of highest version, LTE candidate cell priority, UMTS takes second place, and GERAN is minimum, therefore this priority orders of determining according to above-mentioned assessed value of this UE, selects LTE candidate cell to carry out resident.Wherein, described highest version UE, refers to and can identify and use the UE of the resident factor, the such as UE of version 13 (Rel-13).
And for the UE of lowest version, due to the resident factor cannot be obtained, therefore still community selection is carried out according to the absolute priority of frequency, therefore still UMTS candidate cell priority is the highest, LTE candidate cell priority is taken second place, GERAN candidate cell priority is minimum, and therefore this UE is follow-up according to this prioritization, utilizes traditional community to select evaluation process to carry out community selection and resident.Wherein, the UE of described lowest version, refers to and can not identify and use the UE of the resident factor, the UE of such as version 12 (Rel-12) and version before.
Owing to introducing the resident factor, make the candidate cell of same RAT for the UE of different editions, the priority of selection is different, therefore, the UE of different editions dispersion can be resided in different RAT communities, thus reach the object of load balancing.
Embodiment 3: the resident factor superposes with signal quality.
Such as, in certain a slice geographic area, some frequencies of operator deployment LTE, UMTS, GERAN totally 3 RAT, the absolute priority of LTE frequency point is set as the highest, and secondly, the absolute priority of GERAN frequency is minimum for the absolute priority of UMTS frequency.The resident factor corresponding for frequencies all under LTE is set to-3 by base station (comprising the base station of LTE, UMTS and GERAN), the resident factor corresponding for frequencies all under UMTS is set to-1, the resident factor corresponding for frequencies all under GERAN is set to 0, and sends to UE by broadcast.
Reside in the UE (the resident factor can be obtained and use) of the highest version of this community, when carrying out selection assessment to the candidate cell of different RAT, the resident factor corresponding with this candidate cell place frequency to the signal quality of candidate cell is added, using obtain with the assessed value of value as this candidate cell.For LTE candidate cell, its signal quality will reduce 3dB, and for UMTS candidate cell, its signal quality will reduce 1dB, and for GERAN candidate cell, its signal quality is constant.That is, this UE carries out community selection according to the signal quality after utilizing the resident factor to adjust, and also namely corresponding according to candidate cell assessed value carries out community selection, and the maximum candidate cell of prioritizing selection assessed value carries out resident.
In the present embodiment, UE has considered the signal quality of candidate cell and the resident factor corresponding to this candidate cell place frequency, carries out community and selects assessment, then select suitable community to carry out resident to the community of different access technologies.
See Fig. 3, at network side, a kind of community device for selection controlling that the embodiment of the present invention provides, comprising:
Resident factor specifying unit 301, for determining the corresponding relation of multiple frequency and the resident factor, wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Notification unit 302, for informing to user equipment (UE) by the corresponding relation of multiple frequency and the resident factor.
By this device, the corresponding relation of multiple frequency and the resident factor is informed to user equipment (UE), thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, described notification unit 302 specifically for:
By broadcast mode, or by dedicated signaling mode, the corresponding relation of multiple frequency and the resident factor is informed to UE.
Preferably, when the corresponding relation of multiple frequency and the resident factor is informed to UE by broadcast mode by described notification unit 302, the corresponding relation of multiple frequency and the resident factor is informed to UE by system information by described notification unit 302; When the corresponding relation of multiple frequency and the resident factor is informed to UE by dedicated signaling mode by described notification unit 302, described notification unit 302 connects reconfiguration message by radio resource control RRC connection release message or RRC and the corresponding relation of multiple frequency and the resident factor is informed to UE.
Preferably, described resident factor specifying unit 301 also for: adjust the resident factor that arbitrary frequency is corresponding;
Described notification unit 302 also for: the corresponding relation of the resident factor after arbitrary frequency and adjustment is informed to UE.
Preferably, above-mentioned resident factor specifying unit 301 can be the modules such as processor, and notification unit 302 can be the modules such as transceiver.
Preferably, the community device for selection controlling that the embodiment of the present invention provides can be the network equipments such as base station.
See Fig. 4, a kind of cell selecting apparatus that the embodiment of the present invention provides, comprising:
Resident factor specifying unit 401, for determining the corresponding relation of multiple frequency and the resident factor, wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Gravity treatment unit 402, for carrying out community selection according to the corresponding relation of multiple frequency and the resident factor.
Community selection is carried out according to the corresponding relation of multiple frequency and the resident factor by this device, thus can make Idle state UE can according to the corresponding relation of multiple frequency and the resident factor, balancedly resident in the community of different RAT, avoid the cell-overload of single RAT.
Preferably, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
Preferably, the described resident factor is the numerical value in preset range;
Described gravity treatment unit 402 specifically for: according to the order from high to low of absolute priority corresponding to each frequency, candidate cell is sorted, and selects candidate cell successively according to sequence order from high to low and judge whether the resident candidate cell to current selection;
Wherein, described gravity treatment unit 402 judges whether the resident candidate cell to current selection, comprise: described gravity treatment unit 402 generates a random number in described preset range, the resident factor that this random number is corresponding with the frequency at the candidate cell place of current selection compares, and judges whether the resident candidate cell to current selection according to comparative result.
Preferably, described gravity treatment unit 402 judges whether the resident candidate cell to current selection according to comparative result, comprising:
When described random number is less than or equal to corresponding resident because of the period of the day from 11 p.m. to 1 a.m of the frequency at the candidate cell place of current selection, determine resident in the candidate cell of current selection; Otherwise, described gravity treatment unit according to next sequence of candidate cell sequence selective sequential from high to low candidate cell and judge whether resident to this candidate cell.
Preferably, described gravity treatment unit 402 specifically for:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is multiplied with the absolute priority of the frequency at this candidate cell place by described gravity treatment unit, using the product that obtains as assessed value corresponding to this candidate cell;
According to the descending order of assessed value corresponding to candidate cell, select resident candidate cell.
Preferably, described gravity treatment unit 402 specifically for:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is added with the signal quality of this candidate cell, using obtain with value as assessed value corresponding to this candidate cell;
According to the descending order of assessed value corresponding to candidate cell, select resident candidate cell.
Preferably, described resident factor specifying unit 401 also for: upgrade the resident factor that arbitrary frequency is corresponding.
Preferably, above-mentioned resident factor specifying unit 401 and gravity treatment unit 402 can be the modules such as processor.
Preferably, the cell selecting apparatus that the embodiment of the present invention provides can be the subscriber equipmenies such as UE.
In sum, in the embodiment of the present invention, the resident factor that under the notice UE different radio access technologies of base station, frequency is corresponding, UE is when carrying out intersystem cell and selecting assessment, consider the absolute priority of subdistrict frequency point and the resident factor, show that assessment result is selected in community.Wherein, base station notifies the resident factor parameter of UE different access technologies by broadcast or dedicated signaling mode; Wherein, broadcast as system information, and dedicated signaling is RRC connection release message or RRC connection reallocation message; And the resident factor of different access technologies can be RAT rank, it also can be frequency rank; UE considers the absolute priority of subdistrict frequency point and the resident factor, carry out the assessment of different access technologies community selection, UE according to assessment result carry out community select and resident, in addition, base station can also according to self load condition with neighboring access technique district, and the resident factor that adjustment frequency is corresponding also informs UE.
Thus the embodiment of the present invention can realize operator and is diverted in the middle of each RAT community by suitable for Idle state UE, avoids the potential overload problem that resident too much UE on the RAT/ frequency of high priority brings.The technical scheme that the embodiment of the present invention provides can be applied in the wireless communication systems such as LTE, UMTS, TD-SCDMA, CDMA2000, GERAN.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (24)
1. a control method is selected in community, and it is characterized in that, the method comprises:
The corresponding relation of multiple frequency and the resident factor is determined in base station, and wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
The corresponding relation of multiple frequency and the resident factor is informed to user equipment (UE) by described base station.
2. method according to claim 1, is characterized in that, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
3. method according to claim 1, is characterized in that, the corresponding relation of multiple frequency and the resident factor is informed to UE by described base station, comprising:
The corresponding relation of multiple frequency and the resident factor by broadcast mode, or by dedicated signaling mode, is informed to UE by described base station.
4. method according to claim 3, it is characterized in that, when the corresponding relation of multiple frequency and the resident factor is informed to UE by broadcast mode by described base station, the corresponding relation of multiple frequency and the resident factor is informed to UE by system information by described base station; When the corresponding relation of multiple frequency and the resident factor is informed to UE by dedicated signaling mode by described base station, described base station connects reconfiguration message by radio resource control RRC connection release message or RRC and the corresponding relation of multiple frequency and the resident factor is informed to UE.
5. method according to claim 1, is characterized in that, the method also comprises:
Described base station adjusts the resident factor corresponding to arbitrary frequency, and the corresponding relation of the resident factor after this frequency and adjustment is informed to UE.
6. a cell selecting method, is characterized in that, the method comprises:
User equipment (UE) determines the corresponding relation of multiple frequency and the resident factor, and wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor.
7. method according to claim 6, is characterized in that, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
8. method according to claim 6, is characterized in that, the described resident factor is the numerical value in preset range;
Described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
Described UE, according to the order from high to low of absolute priority corresponding to each frequency, sorts to candidate cell, and selects candidate cell successively according to sequence order from high to low and judge whether the resident candidate cell to current selection;
Wherein, described UE comprises when judging whether the resident candidate cell to current selection: described UE generates a random number in described preset range, the resident factor that this random number is corresponding with the frequency at the candidate cell place of current selection compares, and judges whether the resident candidate cell to current selection according to comparative result.
9. method according to claim 8, is characterized in that, described UE judges whether the resident candidate cell to current selection according to comparative result, comprising:
When described random number is less than or equal to corresponding resident because of the period of the day from 11 p.m. to 1 a.m of the frequency at the candidate cell place of current selection, determine resident in the candidate cell of current selection; Otherwise, described UE according to next sequence of candidate cell sequence selective sequential from high to low candidate cell and judge whether resident to this candidate cell.
10. method according to claim 6, is characterized in that, described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is multiplied with the absolute priority of the frequency at this candidate cell place by described UE, using the product that obtains as assessed value corresponding to this candidate cell;
Described UE, according to the descending order of assessed value corresponding to candidate cell, selects resident candidate cell.
11. methods according to claim 6, is characterized in that, described UE carries out community selection according to the corresponding relation of multiple frequency and the resident factor, comprising:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is added with the signal quality of this candidate cell by described UE, using obtain with value as assessed value corresponding to this candidate cell;
Described UE, according to the descending order of assessed value corresponding to candidate cell, selects resident candidate cell.
12. methods according to the arbitrary claim of claim 6-11, it is characterized in that, the method also comprises:
Upgrade the resident factor that arbitrary frequency is corresponding.
13. 1 kinds of community device for selection controlling, is characterized in that, this device comprises:
Resident factor specifying unit, for determining the corresponding relation of multiple frequency and the resident factor, wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Notification unit, for informing to user equipment (UE) by the corresponding relation of multiple frequency and the resident factor.
14. devices according to claim 13, is characterized in that, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
15. devices according to claim 13, is characterized in that, described notification unit specifically for:
By broadcast mode, or by dedicated signaling mode, the corresponding relation of multiple frequency and the resident factor is informed to UE.
16. devices according to claim 15, it is characterized in that, when the corresponding relation of multiple frequency and the resident factor is informed to UE by broadcast mode by described notification unit, the corresponding relation of multiple frequency and the resident factor is informed to UE by system information by described notification unit; When the corresponding relation of multiple frequency and the resident factor is informed to UE by dedicated signaling mode by described notification unit, described notification unit connects reconfiguration message by radio resource control RRC connection release message or RRC and the corresponding relation of multiple frequency and the resident factor is informed to UE.
17. devices according to claim 13, is characterized in that, described resident factor specifying unit also for: adjust the resident factor that arbitrary frequency is corresponding;
Described notification unit also for: the corresponding relation of the resident factor after arbitrary frequency and adjustment is informed to UE.
18. 1 kinds of cell selecting apparatus, is characterized in that, this device comprises:
Resident factor specifying unit, for determining the corresponding relation of multiple frequency and the resident factor, wherein, the resident factor that the frequency under at least two different radio access technologies RAT is corresponding is different;
Gravity treatment unit, for carrying out community selection according to the corresponding relation of multiple frequency and the resident factor.
19. devices according to claim 18, is characterized in that, the resident factor that all frequencies under arbitrary RAT are corresponding is identical; Or the resident factor that at least two frequency bins under arbitrary RAT is corresponding is different.
20. devices according to claim 18, is characterized in that, the described resident factor is the numerical value in preset range;
Described gravity treatment unit specifically for: according to the order from high to low of absolute priority corresponding to each frequency, candidate cell is sorted, and selects candidate cell successively according to sequence order from high to low and judge whether the resident candidate cell to current selection;
Wherein, the whether resident candidate cell to current selection of described gravity treatment unit judges, comprise: described gravity treatment unit generates a random number in described preset range, the resident factor that this random number is corresponding with the frequency at the candidate cell place of current selection compares, and judges whether the resident candidate cell to current selection according to comparative result.
21. devices according to claim 20, is characterized in that, described gravity treatment unit judges whether the resident candidate cell to current selection according to comparative result, comprising:
When described random number is less than or equal to corresponding resident because of the period of the day from 11 p.m. to 1 a.m of the frequency at the candidate cell place of current selection, determine resident in the candidate cell of current selection; Otherwise, described gravity treatment unit according to next sequence of candidate cell sequence selective sequential from high to low candidate cell and judge whether resident to this candidate cell.
22. devices according to claim 18, is characterized in that, described gravity treatment unit specifically for:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is multiplied with the absolute priority of the frequency at this candidate cell place by described gravity treatment unit, using the product that obtains as assessed value corresponding to this candidate cell;
According to the descending order of assessed value corresponding to candidate cell, select resident candidate cell.
23. devices according to claim 18, is characterized in that, described gravity treatment unit specifically for:
For each candidate cell, the resident factor corresponding for the frequency at this candidate cell place is added with the signal quality of this candidate cell, using obtain with value as assessed value corresponding to this candidate cell;
According to the descending order of assessed value corresponding to candidate cell, select resident candidate cell.
24. devices according to the arbitrary claim of claim 18-23, is characterized in that, described resident factor specifying unit also for: upgrade the resident factor that arbitrary frequency is corresponding.
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| CN201410193278.5A CN105101344B (en) | 2014-05-08 | 2014-05-08 | A kind of selection of cell and its control method and device |
| PCT/CN2015/078461 WO2015169238A1 (en) | 2014-05-08 | 2015-05-07 | Cell selection method and device and control method and device therefor |
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| CN201410193278.5A CN105101344B (en) | 2014-05-08 | 2014-05-08 | A kind of selection of cell and its control method and device |
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| CN107046707A (en) * | 2016-02-06 | 2017-08-15 | 中兴通讯股份有限公司 | Frequency point selecting method and device |
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| CN111670588B (en) * | 2020-04-13 | 2024-01-16 | 北京小米移动软件有限公司 | Information transmission method, user equipment, base station equipment and computer storage medium |
| CN113411856A (en) * | 2021-06-24 | 2021-09-17 | 展讯通信（上海）有限公司 | Voice service control method, electronic equipment, chip and storage medium |
| CN114745759B (en) * | 2022-03-28 | 2024-02-02 | 中国电信股份有限公司 | Method and device for determining resident cell, storage medium and electronic equipment |
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| CN105101344B (en) | 2019-02-26 |
| WO2015169238A1 (en) | 2015-11-12 |
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