CN101742549A - Method and device for preferably measuring and reselecting home base station cells - Google Patents
Method and device for preferably measuring and reselecting home base station cells Download PDFInfo
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Abstract
The invention discloses a method and a device for preferably measuring and reselecting home base station cells, which are used for solving the technical problem that terminals supporting the home base station cells cannot preferably reselect the home base station cells in a frequency priority-based cell reselecting policy. When the cells are measured, the frequency priority of frequency points where the home base station cells are is set as the maximum value so as to preferably measure the frequency points where the home base station cells are. The reselecting method adopted by the invention comprises the following steps: preferably selecting the home base station cells and performing cell reselection on the basis of the home base station cell reselecting method under the condition of no candidate home base station cell or under the condition that no home base station cells allowed to be reselected are not found in the candidate home base station cells. By the method of the invention, the terminal can preferably reselect the home base station cells so as to fulfil the aim of decreasing cost expenditure of a user and reducing load of a macro cell.
Description
Technical field
The present invention relates to wireless communication technology field, the measurement that particularly a kind of home base station cells is preferential and the method and apparatus of gravity treatment.
Background technology
In the modern wireless network system builds, indoor covering has become the most important thing of networking, suitable indoor covering scheme can allow network farthest bring into play its effect on the one hand, for operator creates bigger value, also can save the networking cost of operator on the other hand greatly, the high repayment of the low input of real realization.At present, increasing multinational operator wishes to provide a kind of one-stop radio access scheme, this radio reception device can provide the function of various wireless access, when the user uses this equipment at home, operator can provide preferential on the rate, on such Demand Base, a kind of radio reception device that is called Home eNodeB (Home NB or eNB) has been proposed.Home eNodeB combines the fixed network in the hot localised points (for example family) and these two kinds of communication modes of mobile network dexterously as intention type hot localised points access solution, makes full use of advantage fixing and that move and satisfies the demand of user and operator.
Home eNodeB is a kind of of base station (NodeB or eNodeB), its dedicated resources as private user is deployed in family, group, private site such as company or school uses, some cell set that Home eNodeB covers become family base station overlay area, Home eNodeB only allows to insert through the user who authorizes, as the kinsfolk, users such as member of community, be different from common base station and provide service to all users, sub-district under the Home eNodeB only provides service to the part authorized users, non-public authorized user group (Closed Subscriber Group, CSG) sub-district so home base station cells is otherwise known as.The CSG sub-district shows that to user terminal (UE) this sub-district is a CSG sub-district by carrying a CSG indication in the broadcast.User terminal is divided into two classes, and a class is to support the terminal (CSG UE) of CSG, and another kind of is the terminal (non-CSGUE) of not supporting CSG.The terminal of non-CSG can not reside in the CSG sub-district.Can only reside in the CSG sub-district that is authorized to for the terminal of supporting CSG, equally can not be resident for the CSG sub-district that does not have to authorize.CSG UE will allow the sign of resident CSG sub-district, and (Universal SubscriberIdentity Module, in tabulation USIM), this tabulation is called as white tabulation (white list) to be kept at the universal subscriber identity module card.Whether CSGUE always can resident current area by searching in white tabulation that the cell ID of wanting persistent district confirms.
In the honeycomb mobile communcations system, switching and sub-district gravity treatment all are extremely important parts, specifically, when user terminal leaves a sub-district and enters the another one sub-district, the signal of the original sub-district that this terminal is received more and more a little less than, and its received cell signal that is entering is more and more stronger.In order to keep the quality of terminal received signal, this terminal must be transformed into the stronger base station of signal that newly enters by original base station.Terminal for connected state, conversion between this base station is called switching, and for the terminal of Idle state, the change of terminal persistent district is finished by cell reselection process, the sub-district gravity treatment need detect Target cell, carries out the sub-district gravity treatment in satisfactory sub-district.Because there is the advantage on the rate CSG sub-district, the load that common sub-district is called again on the macrocell also can alleviate greatly, so there is the UE of CSG ability can reside in as much as possible on the CSG sub-district that is authorized to.CSG UE by artificial (manual searching) or automatically the mode of (autonomous searching) initiate search to the CSG sub-district.Virtual network operator can keep a part of physical resource when the network planning, as Physical Cell Identifier (Physical Cell Identity, PCI) use for the CSG sub-district specially, perhaps divide special frequency and use for the CSG sub-district, and this configuration can be notified to UE by modes such as broadcasting or signalings.CSG UE can judge by the scanning of physical layer whether the sub-district is the CSG sub-district.
The quality of terminal received signal is finished by the measurement of terminal, in order to save the power consumption of terminal, should reduce the sub-district that needs measurement as far as possible, in modern wireless cellular system, terminal has a kind of strategy to be based on the cell measurement strategy of frequency priority in cell reselection process.When operator plans at subzone network, all frequencies are divided into several groups, priority of every set of dispense.The priority of own place frequency and the priority of neighbor cell place frequency can be broadcasted in each sub-district.UE is required residently as far as possible to go on the high frequency of priority, this cell measuring method based on frequency priority regular as follows:
1, for carrying out periodic measurement than the adjacent sub-district on the high frequency of resident frequency priority.
2, for the measurement of co-frequency neighbor cell only at Serving cell signal quality (S
ServingCell) be lower than thresholding (S
Intrasearch) time just open measurement, otherwise UE may not do measurement.
3, for the adjacent sub-district on other frequency of or same priority lower than resident frequency priority only at Serving cell signal quality (S
ServingCell) be lower than thresholding (S
Nonintrasearch) time just open measurement, otherwise UE may not do measurement.
By top rule, when UE resided in the limit priority frequency, the measurement of UE under disconnected (IDLE) attitude was minimized.Above-mentioned Serving cell signal quality S
ServingCellComputational methods are as follows:
S＝Q
rxlevmeas-(Q
rxlevmin-Q
rxlevminoffset)
Wherein, Q
RxlevmeasThe incoming level value of expression sub-district, Q
RxlevminThe minimum required incoming level of representing this sub-district, Q
RxlevminoffsetBe that (the S value is called the cell selecting incoming level value of a sub-district to public land mobile network, also can be described as the Serving cell signal quality for Public Land Mobile Network, skew PLMN).
Finish measure after terminal reselecting method as follows:
Condition 1: tested frequency (x) is gone up the selective reception level value (S of tested sub-district (nonServingCell)
NonServingCell, x) at sub-district gravity treatment Measuring Time (Treselection
RAT) in all greater than the high priority frequency gravity treatment thresholding (Thresh of tested frequency
X, high)
If a certain sub-district in high priority frequency satisfy condition 1 and terminal at current persistent district more than resident 1 second, then gravity treatment is to this sub-district.
2. working as resident frequency does not have the re eligible sub-district, and does not have the high priority frequency point cell to satisfy condition 1, and the measurement level (S of persistent district
ServingCell) be lower than the low level thresholding (Thresh of persistent district again
Serving, low) time, if the measurement level value (S of the last sub-district of a certain tested low priority frequency (x)
NonServingCell, x) at sub-district gravity treatment Measuring Time (Treselection
RAT) in all greater than this frequency low priority frequency gravity treatment thresholding (Thresh
X, low) time, then gravity treatment is to this sub-district.
For the gravity treatment of the sub-district of other frequency of co-frequency cell and same priority by residence reselecting gravity treatment based on skew.
4. when there being a plurality of sub-districts to satisfy condition 1 the time in a plurality of frequencies at a frequency or same priority, terminal is selected the Target cell of best cell as gravity treatment.
The selection of best cell is by realizing based on the sort method of skew in a frequency.Wherein:
R
s＝Q
meas，s+Qhyst
s
R
n＝Q
meas，n-Qoffset
Wherein s represents persistent district, and n represents neighbor cell, Q
Meas, sThe measurement level of expression persistent district in reuse adoption process, Q
Meas, nBe the measurement level of neighbor cell in reuse adoption process, Qhyst
sExpression Serving cell sluggishness, Qoffset is the level deviation value of adjacent sub-district.
Qoffset＝Qoffset
s，n+Qoffset
frequency。
Wherein, Qoffset
S, nBe the skew of cell level, Qoffset
FrequencyIt is other skew of frequency level.
Terminal sorts all R values, and what make number one promptly is best cell.Because the gravity treatment complexity of adjacent sub-district except the wireless quality that depends on the sub-district, also depends on the value size of Qoffset, so this method is called the residence reselecting based on skew again.
Because the setting of CSG sub-district is unforeseen for macrocell, that is to say for macrocell when the network planning to know there are how many adjacent CSG sub-districts, these CSG sub-districts are respectively at which frequency.The CSG sub-district when setting up in order to reach best effect, avoid interference as far as possible with the adjacent area, can find one to disturb minimum frequency by all frequencies of scanning, so the CSG sub-district may occur at the frequency of any permission, may be the frequency at the macrocell neighbor cell, also might be an other independent frequency.In this case, if still adopt above-mentioned cell measuring method based on frequency priority, if under the lower situation of the priority of the home base station cells place frequency that closes on, may cause terminal can not measure this home base station cells, also just preferentially gravity treatment arrive this home base station cells.In addition, if CSG UE still carries out the sub-district gravity treatment by the residence reselecting based on skew recited above, when the frequency of CSG sub-district is the frequency of same priority or low priority just, CSG UE just more difficult gravity treatment goes to the CSG sub-district, thereby cause to reach the purpose that allows the terminal of supporting CSG reside in the CSG sub-district as far as possible, also just can't reach the purpose of the rate expense that reduces the user and the load of reduction macrocell.
Summary of the invention
In view of this, one of main purpose of the present invention provides the preferential cell measuring method of a kind of home base station cells, to solve in the prior art when carrying out cell measurement the technological deficiency can not home base station cells preferentially measured for achieving the above object, technical scheme of the present invention is achieved in that
The cell measuring method that a kind of home base station cells is preferential, concrete steps are as follows:
When terminal is in the state of automatic search cell, have the non-resident frequency of adjacent home base station cells and when terminal resides in home base station cells the frequency priority of the frequency at place be set to limit priority, the frequency priority of other frequency remains unchanged, and then the cell measurement that is undertaken by the cell measuring method based on frequency priority.
Further, described terminal is in the trigger condition of automatic search home base station cells state, can be that the terminal upper-layer protocol triggers, thereby or described terminal draw current surrounding enviroment according to characteristic information and may exist the home base station cells that can insert to trigger the state that described terminal enters automatic search home base station cells.
Further, described characteristic information is location feature information or environmental characteristic information.Described location feature information can be the locating information of terminal position.Described environmental characteristic information can be: the terminal that helps that the frequency of peripheral cell, Physical Cell Identifier, cell ID, Location Area Identification, Routing Area Identifier or tracking area identification etc. often do not change is determined the information of own position.Terminal by the coupling current detection to the characteristic information of home base station cells of the resident mistake of preserving with self confirmed whether to enter before the overlay area of home base station cells of resident mistake.
Further, the frequency of terminal measurement can be the frequency of notifications terminal measurement or the frequency that terminal finds by automatic search.
Further, described non-resident frequency is meant other frequencies except that the frequency of terminal persistent district place.
Further, judging whether non-resident frequency exists the basis for estimation of adjacent home base station cells, can be to search the one family base station cell on this non-resident frequency; Or on this non-resident frequency, scan the peculiar physical layer identifications of home base station cells of preservation or the special-purpose frequency of the home base station cells of preservation; Or, infer that there is home base station cells in measured frequency according to characteristic information.
Further, the frequency of peculiar physical layer identifications of described home base station cells or home base station cells special use is the notifications terminals.
Further, the frequency of peculiar physical layer identifications of described home base station cells and home base station cells special use can be in certain scope effectively, described scope can be whole network or be all frequencies or one of them frequency on the network of scope with the area identification.
Further, the special-purpose frequency of peculiar physical layer identifications of described home base station cells or home base station cells is by network notice terminal.
Further, if the resident sub-district of current terminal is non-home base station cells, then the priority of this place, sub-district frequency is not done setting.
Further, the described limit priority that is set to is meant, does not consider to be set up original priority of frequency, and directly the frequency priority of described frequency is set to limit priority, and described limit priority is higher than already present any priority.
Further, the frequency priority of all frequencies that is set to limit priority is identical.
Further, all other do not have the priority of frequency of the non-resident frequency of home base station cells to keep original priority constant.
Further, described cell measuring method based on frequency priority is as follows:
For the frequency of frequency priority greater than the frequency priority of resident frequency, this frequency of periodic measurement;
For resident frequency, only when the Serving cell signal quality is lower than the common frequency measurement thresholding, just begin to measure, otherwise can not do common frequency measurement;
Be equal to or less than other frequency of the frequency priority of resident frequency for frequency priority, only when affair cell signal quality is lower than the measurement thresholding of this frequency, just begin to measure, otherwise can this frequency not measured.
The residence reselecting that provides a kind of home base station cells preferential is provided another main purpose of the present invention, can't guarantee to support the technical problem of the preferential gravity treatment of terminal of home base station cells to solve in the sub-district gravity treatment strategy based on frequency priority to family's base station cell, for achieving the above object, technical scheme of the present invention is achieved in that
The residence reselecting that a kind of home base station cells is preferential, concrete steps are as follows:
Terminal is after carrying out cell measurement, measure the best home base station cells of wireless quality on frequency as candidate's home base station cells at each, in candidate's home base station cells, select the home base station cells that allows gravity treatment successively by wireless quality more then, if found the home base station cells that allows gravity treatment by wireless quality in candidate's home base station cells, then the terminal gravity treatment is to this sub-district; If do not have candidate's home base station cells or in candidate's home base station cells, do not find the home base station cells that allows gravity treatment, then carry out the sub-district gravity treatment by residence reselecting based on frequency priority.
Further, described cell measurement refers to the cell measurement that adopts the preferential cell measuring method of above-mentioned home base station cells or carry out based on the method for measurement of priority.
Further, describedly measure the best home base station cells of wireless quality on frequency at each, promptly candidate's home base station cells is meant, in the measured sub-district of all in its frequency, this sub-district, by the sub-district that ranks the first based on the sort method that is offset, and this sub-district is a home base station cells.
Further, described selecting successively by wireless quality again in candidate's home base station cells is meant, to candidate's home base station cells, by the sort method ordering based on skew, selects home base station cells successively by ordering order from high to low once more.
Further, in the sort method based on skew, deviant can be only to use the deviant of cell level, also can be that the cell level deviant adds frequency rank deviant between home base station cells.
Further, can't obtain in terminal under the situation of described frequency offseting value, adopt the frequency shift (FS) default value, default value can be predefined or network notice terminal of agreement and effective value within the specific limits.Described scope can be whole network or be all frequencies or one of them frequency on the network of scope with the area identification.
Further, the home base station cells of described permission gravity treatment is meant, the cell ID of this home base station cells can find in the white tabulation that terminal is preserved, and do not have other not allow the restriction that enters, it is limited in this sub-district access control to forbid that such as the sub-district sign is set to true or current terminal.
Further, the described candidate's of not having home base station cells situation is meant: do not find candidate's home base station cells, not having home base station cells or home base station cells in other words in measuring frequency is not the best sub-district of wireless quality in frequency inside; The described situation of the home base station cells that allows gravity treatment that do not find in candidate's home base station cells is meant: candidate's home base station cells of selecting does not allow gravity treatment.
If the candidate's home base station cells that has the terminal of not allowing to enter on certain frequency, and network notice terminal in this case, do not allow to carry out the interior sub-district gravity treatment of this frequency, then this frequency will be excluded outside follow-up cell reselection process, promptly after finding this frequency, follow-up reuse adoption process will not handled this frequency, based on the cell reselection process of frequency priority, can further improve the performance of sub-district gravity treatment like this after comprising.
Another object of the present invention provides the preferential cell measurement device of a kind of home base station cells, as shown in Figure 8, comprising:
Cell search module: be used for search cell;
Home base station cells frequency priority is provided with module: be used for the frequency priority of the home base station cells place frequency that searches is provided with;
Cell measurement module based on frequency priority: be used to adopt cell measuring method to carry out cell measurement based on frequency priority;
Further, it is to be triggered by upper-layer protocol that described home base station cells search module carries out home base station cells search, or judging current surrounding enviroment by terminal according to characteristic information may exist the home base station cells that can insert and initiatively trigger;
Further, the frequency priority that described home base station cells frequency priority is provided with the non-resident frequency in home base station cells place that module searches is set to limit priority, the frequency priority of the frequency at place is set to limit priority when terminal resides in home base station cells, and the frequency priority of other frequency remains unchanged.
Another object of the present invention provides the preferential sub-district gravity concentration apparatus of a kind of home base station cells, as shown in Figure 7, comprising:
Cell measurement module: be used to carry out cell measurement;
The preferential gravity treatment module of home base station cells: be used to carry out the sub-district gravity treatment;
Described cell measurement module offers the preferential gravity treatment module of described home base station cells with measurement result and carries out the sub-district gravity treatment.
Further, described cell measurement module realizes that by the preferential cell measurement device of above-mentioned home base station cells the result that measurement mechanism will be measured and handle offers the preferential gravity treatment module of described home base station cells and carries out the sub-district gravity treatment.
Further, the preferential gravity treatment module of described home base station cells as shown in Figure 9, comprising:
Candidate's home base station cells screening judge module: be used for being sorted according to wireless quality in the sub-district of measuring in all measurement frequencies, judge whether to exist candidate's home base station cells;
Candidate's home base station cells order module: be used for candidate's home base station cells is sorted according to wireless quality;
The reselecting home base station cells module: be used for through the ordering candidate's Home eNodeB pick out wireless quality good and the permission gravity treatment home base station cells and this home base station cells of gravity treatment;
Sub-district gravity treatment module based on frequency priority: be used to adopt residence reselecting to carry out the sub-district gravity treatment based on frequency priority;
If determining, described candidate's home base station cells screening judge module do not exist candidate's home base station cells then directly to carry out the sub-district gravity treatment by described sub-district gravity treatment module based on frequency priority; If do not find reeligible home base station cells then to carry out the sub-district gravity treatment in candidate's Home eNodeB of described reselecting home base station cells module after ordering by described sub-district gravity treatment module based on frequency priority.
Further, described candidate's home base station cells is meant in the measured sub-district of all in its frequency, this sub-district that by the sub-district that ranks the first based on the sort method that is offset, and this sub-district is a home base station cells; Described candidate's home base station cells order module sorts to candidate's home base station cells by the sort method based on skew.
Further, the home base station cells of described permission gravity treatment is meant, the cell ID of this home base station cells can find in the white tabulation that terminal is preserved, and do not have other not allow the restriction that enters, it is limited in this sub-district access control to forbid that such as the sub-district sign is set to true or current terminal.
Adopt technical scheme of the present invention, owing to when measuring the frequency priority of home base station cells place frequency is carried out peaked replacement in the sub-district, make those have the low priority of home base station cells or the non-resident frequency of same priority can obtain preferential measurement in the cell measuring method based on frequency priority, thus guaranteed in reuse adoption process can be by preferential gravity treatment may.Reselecting method of the present invention is preferentially selected home base station cells, do not having candidate's home base station cells or in candidate's home base station cells, do not finding the situation of the home base station cells that allows gravity treatment to carry out just that the common reselecting method based on frequency priority that adopts carries out the sub-district gravity treatment in the prior art, pass through the method for the invention, make terminal preferentially gravity treatment to family's base station cell, thereby reach rate expense that reduces the user and the purpose that reduces the macrocell load.
Description of drawings
Fig. 1 is the flow chart of the preferential residence reselecting of home base station cells of the present invention;
Fig. 2 is the flow chart of the preferential cell measuring method of home base station cells of the present invention;
Fig. 3 is the schematic diagram of terminal gravity treatment embodiment one of the present invention;
Fig. 4 is the schematic diagram of terminal gravity treatment embodiment two of the present invention;
Fig. 5 is the schematic diagram of terminal gravity treatment embodiment three of the present invention;
Fig. 6 is the schematic diagram of terminal gravity treatment embodiment four of the present invention;
Fig. 7 is the system construction drawing of the preferential gravity concentration apparatus of home base station cells of the present invention;
Fig. 8 is the structure chart of the preferential measurement module of home base station cells of the present invention;
Fig. 9 is the structure chart of the preferential gravity treatment module of the home base station cells in the device of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
As the flow chart of steps of Fig. 1 for residence reselecting of the present invention, each step thes contents are as follows:
A, terminal are carried out cell measurement;
Adopt in the present invention's one specific embodiment and measure based on the cell measuring method of frequency priority, but this method of measurement of the prior art is ignored easily the existence of other frequency of the low priority that comprises home base station cells or same priority, so just can not well reach the effect of preferential selection home base station cells, therefore, the present invention has proposed the preferential method of measuring of a kind of home base station cells on this basis, concrete steps such as Fig. 2:
Steps A 1, terminal are carried out the automatic search of home base station cells;
The frequency priority of the home base station cells place frequency that steps A 2, terminal setting search is limit priority, and the frequency priority of other frequency remains unchanged;
Steps A 3, employing are carried out cell measurement based on the method for frequency priority.
The method before carrying out cell measurement earlier the frequency priority to the home base station cells place frequency that searches make amendment, the frequency that so just can avoid having home base station cells is ignored by the cell measuring method based on frequency priority afterwards, thereby obtains better effect.
B, judged whether candidate's home base station cells, if, execution in step C then; If not, execution in step E then;
This step judges whether to search home base station cells,
Candidate's home base station cells is meant the best home base station cells of picking out of wireless quality on each measurement frequency in the sub-district that searches.If do not have candidate's home base station cells then carry out by normal residence reselecting.The method that obtains candidate's home base station cells is as follows:
At first press frequency, sorted by the mode based on skew in sub-districts all in each frequency; To rank the first at frequency separately then simultaneously is again that the home base station cells as the candidate is picked out in the sub-district of home base station cells.
C, candidate's home base station cells is sorted by wireless quality;
This step sorts to candidate's home base station cells by the sort method based on skew once more, thus obtain candidate's home base station cells on wireless quality by well to bad sequencing.
D, judge whether the home base station cells that allows gravity treatment is arranged in candidate's home base station cells, if having, execution in step F then; If do not have, execution in step E then;
With the cell ID of above-mentioned candidate's home base station cells and the cell ID coupling in the white tabulation of terminal, if find occurrence, and do not have other not allow the restriction that enters successively, then gravity treatment is to this sub-district.Otherwise just carry out normal residence reselecting based on frequency priority.
E, carry out the sub-district gravity treatment by residence reselecting based on frequency priority.
F, this home base station cells of terminal gravity treatment.
Terminal is measured embodiment one: CSG UE resides on the macrocell M_a1 of frequency A, obtains priority F_a, F_b and the F_c of resident frequency A priority and other two frequency B and C by broadcasting.Priority orders is followed successively by F_b＞F_a＞F_c.The CSG terminal also finds another frequency D, but the D frequency is not broadcasted on M_a1.On frequency D, search the PCI of the CSG cell-specific of all frequency sharings according to UE, UE infers the CSG sub-district on the frequency D, so corresponding frequency priority all is configured to the highest, represent with F_d ', because UE resides in macrocell, so resident frequency priority is constant, each frequency priority orders is F_d '＞F_b＞F_a＞F_c at last.According to measuring rule, because the resident frequency height of priority ratio of frequency B, D, UE measures the adjacent area on frequency B, the D all the time, only at the cell selecting incoming level value S of M_a1
M_a1＜=S
IntrasearchThe time, UE just measures the adjacent sub-district on the frequency A.Only at the cell selecting incoming level value S of M_a1
M_a1＜=S
NonintrasearchThe time, UE just measures the adjacent sub-district on the frequency rate C.
Terminal is measured embodiment two: CSG UE resides on the macrocell M_a1 of frequency A, obtains the frequency priority of frequency A and priority F_a, F_b and the F_c of other two frequency B and C by broadcasting.Priority orders is followed successively by F_b＞F_a＞F_c.Search the PCI of the CSG cell-specific of all frequency sharings according to UE on frequency C, D, inferring all has the CSG sub-district on frequency C, the D, but the D frequency is broadcasted on M_a1.Owing on frequency C and the D CSG sub-district is arranged, so it is the highest that corresponding frequency priority all is set to, and is set to F_c ' and F_d ' respectively, because UE resides in macrocell, so resident frequency priority is constant, each frequency priority orders is F_c '=F_d '＞F_b＞F_a at last.According to measuring rule, UE is the high frequency of the resident priority of measuring frequency priority ratio all the time, so frequency B, C, D are measured, only at the cell selecting incoming level value S of M_a1
M_a1＜=S
IntrasearchThe time, UE just measures the adjacent sub-district on the frequency A.
Terminal is measured embodiment three: on the CSG sub-district H_a1 of the resident frequency A of CSG UE, obtaining two the frequency B of frequency priority and other of frequency A and the frequency priority of C by broadcasting is F_a, F_b and F_c.Priority orders is followed successively by F_b＞F_a＞F_c.At frequency C, search the PCI that frequency C and frequency D go up the CSG cell-specific according to UE on the D respectively, infer C, the CSG sub-district is all arranged on the D, but the D frequency is not broadcasted on M_a1.Owing on frequency C and the D CSG sub-district is arranged, so it is the highest that corresponding frequency priority all becomes, and is set to F_c ' and F_d ' respectively, UE resides in the CSG sub-district, so becoming, resident frequency priority is set to the highest F_a ', so each frequency priority orders is F_a '=F_c '=F_d '＞F2.According to measuring rule, owing to there is not the resident frequency height of frequency priority ratio, only at the cell selecting incoming level value S of H_a1
H_a1＜=S
IntrasearchThe time, UE just measures the adjacent sub-district on the frequency A, has only S
H_a1＜=S
NonintrasearchThe time, UE just measures frequency B, the adjacent area on C and the D.
Terminal gravity treatment embodiment one: as shown in Figure 3, CSG UE resides on the macrocell M_a1 of frequency A, obtains two the frequency B of frequency priority and other of frequency A and the frequency priority of C by broadcasting be: F_a, F_b and F_c.Priority orders is followed successively by F_b＞F_a＞F_c.The CSG terminal also finds another frequency D, but the D frequency is not broadcasted on M_a1.On each frequency, search the PCI of the CSG cell-specific of all frequency sharings according to UE, measure and obtain macrocell M_a1 is arranged, M_a2 and CSG sub-district H_a1, R on the frequency A
M_a1=Q
Meas, M_a1-(Qoffset
S, M_a1+ Qoffset
A), R
M_a2=Q
Meas, M_a2-(Qoffset
S, M_a2+ Qoffset
A), R
H_a1=Q
Meas, H_a1-(Qoffset
S, H_a1+ Qoffset
A); Macrocell M_b1 is arranged, R on the frequency B
M_b1=Q
Meas, M_b1-(Qoffset
S, M_b1+ Qoffset
B); Macrocell M_c1 and CSG sub-district H_c1 are arranged, H_c2, R on the frequency C
M_c1=Q
Meas, M_c1-(Qoffset
S, M_c1+ Qoffset
C), R
H_c1=Q
Meas, H_c1-(Qoffset
S, H_c1+ Qoffset
C), R
H_c2=Q
Meas, H_c2-(Qoffset
S, H_c2+ Qoffset
C); CSG sub-district H_d1 is arranged, R on the frequency D
H_d1=Q
Meas, H_d1-(Qoffset
S, H_d1+ Qoffset
D), because frequency D does not broadcast Qoffset in M_a1
DGet the default value Qoffset of agreement regulation
DefaultFor Qoffset
S, H_a1, Qoffset
S, H_c1, Qoffset
S, H_c2And Qoffset
S, H_d1Be the skew of CSG cell level, if when not broadcasting this parameter in the broadcasting of M_a1, UE uses an offset parameter that CSG is shared of preserving, and this skew obtains from once resident CSG sub-district, and is effective in whole PLMN.UE has the sub-district of CSG frequency to sort according to the sort method based on skew by wireless quality to all.The order that frequency A goes up the sub-district is R
M_a1＞R
M_a2＞R
H_a1, the order that frequency C goes up the sub-district is R
H_c1＞R
H_c2＞R
M_c1, the order that frequency D goes up the sub-district is R
H_d1The best sub-district of the wireless quality of frequency C and D is the CSG sub-district.And R
H_c1＞R
H_d1UE at first selects the H_c1 sub-district, with dotted line (1) expression, find H_c1 not in white tabulation, and H_d1 then selects the H_d1 sub-district in white tabulation, represent with dotted line (2) among Fig. 3 among Fig. 3.
Terminal gravity treatment embodiment two: as shown in Figure 4, on the macrocell M_a1 of the resident frequency A of CSG UE, obtain priority F_a, F_b and the F_c of this frequency A point priority and other two frequency B and C by broadcasting.Priority orders is followed successively by F_b＞F_a＞F_c.The CSG terminal also finds another frequency D, but the D frequency is not broadcasted on M_a1.On each frequency, search the PCI of each frequency CSG cell-specific according to UE, measure and obtain macrocell M_a1 is arranged, M_a2 and CSG sub-district H_a1, R on the frequency A
M_a1=Q
Meas, M_a1-Qoffset
S, M_a1, R
M_a2=Q
Meas, M_a2-Qoffset
S, M_a2, R
H_a1=Q
Meas, H_a1-Qoffset
S, H_a1Macrocell M_b1 is arranged, R on the frequency B
M_b1=Q
Meas, M_b1-Qoffset
S, M_b1Macrocell M_c1 and CSG sub-district H_c1 are arranged, H_c2, R on the frequency C
M_c1=Q
Meas, M_c1-Qoffset
S, M_c1, R
H_c1=Q
Meas, H_c1-Qoffset
S, H_c1, R
H_c2=Q
Meas, H_c2-Qoffset
S, H_c2CSG sub-district H_d1 is arranged, R on the frequency D
H_d1=Q
Meas, H_d1-Qoffset
S, H_d1For Qoffset
S, H_a1, Qoffset
S, H_c1, Qoffset
S, H_c2And Qoffset
S, H_d1Be the skew of CSG cell level, if when not broadcasting this parameter in the broadcasting of M_a1, UE uses the offset parameter of four CSG frequency sharings preserving, and four skews obtain from once resident sub-district, respectively at frequency A, and B, C, D is last effective, Qoffset
S, H_a1=Qoffset
A, CSG, Qoffset
S, H_c1=Qoffset
C, CSG, Qoffset
S, H_C2=Qoffset
C, CSG, Qoffset
S, H_d1=Qoffset
D, CSGUE has the sub-district of CSG frequency to sort according to the sort method based on skew by wireless quality to all.The order that frequency A goes up the sub-district is R
M_a1＞R
M_a2＞R
H_a1, the order that frequency C goes up the sub-district is R
H_c1＞R
H_c2＞R
M_c1, the order that frequency D goes up the sub-district is R
H_d1The best sub-district of the wireless quality of frequency C and D is the CSG sub-district.And R
H_c1＞R
H_d1UE at first selects the H_c1 sub-district, finds H_c1, and H_d1 not in white tabulation, shown in dotted line among Fig. 4 (1) and (2), does not promptly find the CSG sub-district that allows gravity treatment.Then carry out the sub-district gravity treatment by the residence reselecting based on frequency priority, each frequency priority returns to F_b＞F_a＞F_c, promptly selects earlier the sub-district on the frequency B, and when M_b1 satisfies reselection conditions, then gravity treatment is to macrocell M_b1, as (3) among Fig. 4.
Terminal gravity treatment embodiment three: as shown in Figure 5, on the macrocell M_a1 of the resident frequency A of CSG UE, obtain priority F_a, F_b and the F_c of this frequency A point priority and other two frequency B and C by broadcasting.Priority orders is followed successively by F_b＞F_a＞F_c.On each frequency, search the PCI of the CSG cell-specific of all frequency sharings according to UE, measure and obtain macrocell M_a1 is arranged, M_a2 and CSG sub-district H_a1, R on the frequency A
M_a1=Q
Meas, M_a1-(Qoffset
S, M_a1+ Qoffset
A), R
M_a2=Q
Meas, M_a2-(Qoffset
S, M_a2+ Qoffset
A), R
H_a1=Q
Meas, H_a1-(Qoffset
S, H_a1+ Qoffset
A); Macrocell M_b1 is arranged, R on the frequency B
M_b1=Q
Meas, M_b1-(Qoffset
S, M_b1+ Qoffset
B); Macrocell M_c1 and CSG sub-district H_c1 are arranged, H_c2, R on the frequency C
M_c1=Q
Meas, M_c1-(Qoffset
S, M_c1+ Qoffset
C), R
H_c1=Q
Meas, H_c1-(Qoffset
S, H_c1+ Qoffset
C), R
H_c2=Q
Meas, H_c2-(Qoffset
S, H_c2+ Qoffset
C); CSG sub-district H_d1 is arranged, R on the frequency D
H_d1=Q
Meas, H_d1-(Qoffset
S, H_d1+ Qoffset
D), because frequency D does not broadcast Qoffset in M_a1
DGet the default value Qoffset of this Cell Broadcast CB
Defau1tUE has the sub-district of CSG frequency to sort according to the sort method based on skew by wireless quality to all.The order that frequency A goes up the sub-district is R
M_a2＞R
M_a1＞R
H_a1, the order that frequency C goes up the sub-district is R
M_c1＞R
H_c1＞R
H_c2Because the best sub-district of wireless quality is not the CSG sub-district on each measurement frequency, so by the method re-selecting cell based on frequency priority, each frequency priority returns to F_b＞F_a＞F_c, promptly select the sub-district on the frequency B earlier, when M_b1 satisfies reselection conditions, then gravity treatment is to macrocell M_b1, shown in dotted line among Fig. 5 (1), if the discontented lumping weight of M_b1 selects condition, then select the sub-district on the frequency A, M_a2 satisfies reselection conditions, and gravity treatment is to M_a2, shown in dotted line among Fig. 5 (2).
Terminal gravity treatment embodiment four: as shown in Figure 6, on the CSG sub-district H_a1 of the resident frequency A of CSG UE, obtain priority F_a, F_b and the F_c of this frequency A point priority and other two frequency B and C by broadcasting.Priority orders is followed successively by F_b＞F_a＞F_c.The CSG terminal also finds another frequency D, but the D frequency is not broadcasted on M_a1.On each frequency, search the PCI of each frequency CSG cell-specific according to UE, measure and obtain macrocell M_a1 is arranged, M_a2 and CSG sub-district H_a1, R on the frequency A
M_a1=Q
Meas, M_a1-Qoffset
S, M_a1, R
M_a2=Q
Meas, M_a2-Qoffset
S, M_a2, R
H_a1=Q
Meas, H_a1-Qoffset
S, H_a1Macrocell M_b1 is arranged, R on the frequency B
M_b1=Q
Meas, M_b1-Qoffset
S, M_b1Macrocell M_c1 and CSG sub-district H_c1 are arranged, H_c2, R on the frequency C
M_c1=Q
Meas, M_c1-Qoffset
S, M_c1, R
H_c1=Q
Meas, H_1-Qoffset
S, H_c1, R
H_c2=Q
Meas, H_c2-Qoffset
S, H_c2CSG sub-district H_d1 is arranged, R on the frequency D
H_d1=Q
Meas, H_d1-Qoffset
S, H_d1For Qoffset
S, H_a1, Qoffset
S, H_c1, Qoffset
S, H_c2And Qoffset
S, H_d1Be the skew of CSG cell level, if when not broadcasting this parameter in the broadcasting of M_a1, UE uses an offset parameter that CSG is shared of preserving, and this skew is broadcasted from current area and read.UE has the sub-district of CSG frequency to sort according to the sort method based on skew by wireless quality to all.The order that frequency A goes up the sub-district is R
H_a1＞R
M_a1＞R
M_a2, the order that frequency C goes up the sub-district is R
H_c1＞R
H_c2＞R
M_c1, the order that frequency D goes up the sub-district is R
H_d1The best sub-district of the wireless quality of frequency C and D is the CSG sub-district.And R
H_c1＞R
H_d1＞R
H_a1UE at first selects the H_c1 sub-district, as dotted line among Fig. 6 (1), finds that H_c1 is not in white tabulation.Select H_d1 again, find that the UE gravity treatment is to CSG sub-district H_d1, as dotted line among Fig. 6 (2) in white tabulation.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (31)
1. the cell measuring method that home base station cells is preferential is characterized in that,
When terminal is in the state of automatic search cell, have the non-resident frequency of adjacent home base station cells and when terminal resides in home base station cells the frequency priority of the frequency at place be set to limit priority, the frequency priority of other frequency remains unchanged, and then the cell measurement that is undertaken by the cell measuring method based on frequency priority.
2. method according to claim 1, it is characterized in that, be to trigger the state that described terminal is in automatic search cell by the terminal upper-layer protocol, thereby or described terminal judge current surrounding enviroment according to characteristic information and exist the home base station cells that can insert initiatively to enter the state of automatic search home base station cells.
3. method according to claim 2 is characterized in that, described characteristic information specific bit characteristic information or environmental characteristic information.
4. method according to claim 1 is characterized in that, described non-resident frequency is meant other frequencies except that the frequency of terminal persistent district place.
5. method according to claim 1 is characterized in that, whether non-resident frequency exists the basis for estimation of adjacent home base station cells to be: search the one family base station cell on this non-resident frequency; Or on this non-resident frequency, scan the peculiar physical layer identifications of home base station cells of preservation; Or this non-resident frequency is the special-purpose frequency of preserving of home base station cells; Or, infer that there is home base station cells in measured frequency according to characteristic information.
6. method according to claim 5 is characterized in that, the frequency of peculiar physical layer identifications of described home base station cells or home base station cells special use is the notifications terminals.
7. method according to claim 5, it is characterized in that, effectively, described scope is whole network or is all frequencies or one of them frequency on the network of scope with the area identification frequency of peculiar physical layer identifications of described home base station cells and home base station cells special use in certain scope.
8. method according to claim 5 is characterized in that, the special-purpose frequency of peculiar physical layer identifications of described home base station cells or home base station cells is by network notice terminal.
9. method according to claim 1 is characterized in that, if the resident sub-district of current terminal is non-home base station cells, then the priority of this place, sub-district frequency is not done setting.
10. method according to claim 1, it is characterized in that the described limit priority that is set to is meant, does not consider to be set up original priority of frequency, directly the frequency priority of this frequency is set to limit priority, and described limit priority is higher than already present any priority.
11. method according to claim 1 is characterized in that, the frequency priority of all frequencies that is set to limit priority is identical.
12. method according to claim 1 is characterized in that, all other do not have the priority of frequency of the non-resident frequency of home base station cells to keep original priority constant.
13. method according to claim 1 is characterized in that, described cell measuring method based on frequency priority is as follows:
For the frequency of frequency priority greater than the frequency priority of resident frequency, this frequency of periodic measurement;
For resident frequency, only when the Serving cell signal quality is lower than the common frequency measurement thresholding, just begin to measure, otherwise do not do common frequency measurement;
Be equal to or less than other frequency of the frequency priority of resident frequency for frequency priority, only when affair cell signal quality is lower than the measurement thresholding of this frequency, just begin to measure, otherwise this frequency is not measured.
14. the residence reselecting that home base station cells is preferential is characterized in that:
Terminal is after carrying out cell measurement, on each measurement frequency, select the best home base station cells of wireless quality as candidate's home base station cells, in candidate's home base station cells, select the home base station cells that allows gravity treatment successively by wireless quality more then, if found the home base station cells that allows gravity treatment, then this sub-district is arrived in the terminal gravity treatment, otherwise carries out the sub-district gravity treatment by the residence reselecting based on frequency priority.
15. method according to claim 14 is characterized in that, described cell measurement refers to the cell measurement that adopts the preferential cell measuring method of described home base station cells or carry out based on the method for measurement of priority.
16. method according to claim 14, it is characterized in that described candidate's home base station cells is meant, in the measured sub-district of all in its frequency, this sub-district, by the sub-district that ranks the first based on the sort method that is offset, and this sub-district is a home base station cells.
17. method according to claim 14, it is characterized in that described selecting successively by wireless quality again is meant, to candidate's home base station cells in candidate's home base station cells, by sort method ordering, select home base station cells successively once more by ordering order from high to low based on skew.
18., it is characterized in that in the described sort method based on skew, deviant is that the deviant or the cell level deviant of cell level adds frequency rank deviant according to claim 16 or 17 described methods.
19. method according to claim 18 is characterized in that, can't obtain in terminal under the situation of described frequency offseting value, adopts the frequency shift (FS) default value, default value is agreement predefine value or network notice terminal and effective value within the specific limits.
20. method according to claim 19 is characterized in that, described scope is whole network or is all frequencies or one of them frequency on the network of scope with the area identification.
21. method according to claim 14 is characterized in that, the home base station cells of described permission gravity treatment is meant that the cell ID of this home base station cells is present in the white tabulation of terminal preservation, and does not have other not allow the restriction that enters.
22. method according to claim 14 is characterized in that, the described candidate's of not having home base station cells situation is meant that not having home base station cells or home base station cells in measuring frequency is not the best sub-district of wireless quality in frequency inside; The described situation of the home base station cells that allows gravity treatment that do not find in candidate's home base station cells is meant that candidate's home base station cells of selecting does not allow gravity treatment.
23. method according to claim 14, it is characterized in that, if the candidate's home base station cells that has the terminal of not allowing to enter on certain frequency, and network notice terminal in this case, do not allow to carry out the interior sub-district gravity treatment of this frequency, then this frequency is excluded outside follow-up cell reselection process.
24. the cell measurement device that home base station cells is preferential is characterized in that, comprising:
Cell search module: be used for search cell;
Home base station cells frequency priority is provided with module: be used for the frequency priority of the home base station cells place frequency that searches is provided with;
Cell measurement module based on frequency priority: be used to adopt cell measuring method to carry out cell measurement based on frequency priority;
Measuring object when carrying out cell measurement based on the cell measurement module of frequency priority comprise frequency priority through the frequency that is provided with and frequency priority without the frequency that is provided with.
25. device according to claim 24, it is characterized in that, it is to be triggered by upper-layer protocol that described home base station cells search module carries out home base station cells search, or judging current surrounding enviroment by terminal according to characteristic information may exist the home base station cells that can insert and initiatively trigger.
26. device according to claim 24, it is characterized in that, the frequency priority that described home base station cells frequency priority is provided with the non-resident frequency in home base station cells place that module searches is set to limit priority, the frequency priority of the frequency at place is set to limit priority when terminal resides in home base station cells, and the frequency priority of other frequency remains unchanged.
27. the sub-district gravity concentration apparatus that home base station cells is preferential is characterized in that, comprising:
Cell measurement module: be used to carry out cell measurement;
The preferential gravity treatment module of home base station cells: be used to carry out the sub-district gravity treatment;
Described cell measurement module offers the preferential gravity treatment module of described home base station cells with measurement result and carries out the sub-district gravity treatment.
28. device according to claim 27, it is characterized in that, described cell measurement module realizes that by the preferential cell measurement device of above-mentioned home base station cells the result that measurement mechanism will be measured and handle offers the preferential gravity treatment module of described home base station cells and carries out the sub-district gravity treatment.
29. device according to claim 27 is characterized in that, the preferential gravity treatment module of described home base station cells comprises:
Candidate's home base station cells screening judge module: be used for being sorted according to wireless quality in the sub-district of measuring in all measurement frequencies, judge whether to exist candidate's home base station cells;
Candidate's home base station cells order module: be used for candidate's home base station cells is sorted according to wireless quality;
Reselecting home base station cells module: be used for picking out wireless quality best and home base station cells and this home base station cells of gravity treatment that allow gravity treatment through candidate's Home eNodeB of ordering;
Sub-district gravity treatment module based on frequency priority: be used to adopt residence reselecting to carry out the sub-district gravity treatment based on frequency priority;
If determining, described candidate's home base station cells screening judge module do not exist candidate's home base station cells then to carry out the sub-district gravity treatment by described sub-district gravity treatment module based on frequency priority; If do not find reeligible home base station cells then to carry out the sub-district gravity treatment in candidate's Home eNodeB of described reselecting home base station cells module after ordering by described sub-district gravity treatment module based on frequency priority.
30. device according to claim 29 is characterized in that, described candidate's home base station cells is meant in the measured sub-district of all in its frequency, this sub-district that by the sub-district that ranks the first based on the sort method that is offset, and this sub-district is a home base station cells; Described candidate's home base station cells order module sorts to candidate's home base station cells by the sort method based on skew.
31. device according to claim 29 is characterized in that, the home base station cells of described permission gravity treatment is meant that the cell ID of this home base station cells is present in the white tabulation of terminal preservation, and does not have other not allow the restriction that enters.
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| CN200810172389A CN101742549A (en) | 2008-11-04 | 2008-11-04 | Method and device for preferably measuring and reselecting home base station cells |
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|---|---|---|---|
| CN200810172389A CN101742549A (en) | 2008-11-04 | 2008-11-04 | Method and device for preferably measuring and reselecting home base station cells |
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Application publication date: 20100616 |