CN101651961A - Method and terminal for reselecting cell - Google Patents
Method and terminal for reselecting cell Download PDFInfo
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- H—ELECTRICITY
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The invention discloses a method and a terminal for reselecting a cell, belonging to the field of mobile communication. The method comprises the following steps: measuring adjacent cells by the terminal in a current macro cell according to a measuring condition; setting cell reselecting parameters of the measured adjacent cells according to the measured signal quality information of the adjacent cells; and selecting the cells with higher immigration levels than the macro cell from the measured adjacent cells according to the set cell reselecting parameters. The terminal comprises a measuring module, a setting module and a selecting module. The invention can realize the immigration of the cells with high immigration levels by the terminal and reduce interferences after the immigration of the terminal. Compared with the prior art, the invention reduces the mutual interferences between the terminal and an HNB cell.
Description
Technical field
The present invention relates to moving communicating field, particularly a kind of method of cell reselection and terminal.
Background technology
Development along with mobile communication system, user's demand is also more and more diversified, for variation also appears in the equipment that adapts to this demand communication system, comprise: cover in the family room of Chu Xianing in recent years and the inside coverage base station of enterprise-level, and some other limited networks, for example, HNB (HomeNodeB, Home eNodeB) sub-district, Home Cell (home cell), AccessPoint (access point), Private Network (private network) or Private Cell (private cell), and the limited network of some characteristic frequency layer etc.
Wherein, HNB is called femto cell (femtocell net base station is called the 3G access point again) again, can with the legacy network equipment seamless link of operator.HNB can make full use of the existing broadband access resource of user, for the user provides FMC (moving and the fixed network fusion) business.The mobile services a large amount of by HNB are absorbed by indoor household base station, can reduce the quantity of operator's macrocellular greatly, for operator saves equipment investment expense and maintenance cost, are both economical indoor signal soverlay techniques.
In the prior art, HNB is divided into two kinds of ClosedAccess (sealing family expenses sub-district) and OpenAccess (opening family expenses sub-district).Wherein, Closed Access is called CSG (Closed Subscriber Group, closed signed user group) again, if the user is signed in in the CSG or is added in the CSG by the owner of CSG, then this user is can be in CSG normal resident and use professional; Do not have the user signatory and that do not added in the CSG then can't be normally resident in CSG, can't use business yet by the owner of CSG.CSG user comprises owner (owner) and guest (guest).In OpenAccess, all users that authenticated by operator can enjoy the service of this sub-district, and OpenAccess can satisfy macrocell and cover the demand of omitting point.
In realizing process of the present invention, the inventor finds that there is following shortcoming at least in above-mentioned prior art:
The radio wave in CSG when operation can cause the descending interference of HNB to non-CSG (non-CSG) terminal in the macrocell, and the radio wave during the non-CSG terminal works in the macrocell also can be given and the terminal among the HNB caused up/descending interference.
Summary of the invention
In order to reduce terminal in the macrocell and the phase mutual interference between the HNB sub-district, the embodiment of the invention provides a kind of method of cell reselection and terminal.Described technical scheme is as follows:
On the one hand, the embodiment of the invention provides a kind of method of cell reselection, and described method comprises:
Terminal is measured neighbor cell according to measuring condition in the macrocell at current place;
According to the signal quality information of the neighbor cell of measuring, the cell reselection parameters of the described neighbor cell of measuring is set;
From the described neighbor cell of measuring, select to move into the rank sub-district higher according to described cell reselection parameters than the immigration rank of described macrocell.
In addition, the embodiment of the invention also provides a kind of method of discerning cell type, and described method specifically comprises:
Obtain the type identification of sub-district physical label or sub-district;
By the type identification of described sub-district physical label or sub-district, the identification cell type.
On the other hand, the embodiment of the invention also provides a kind of terminal, and described terminal comprises:
Measurement module is used for neighbor cell being measured according to measuring condition at the macrocell at current place;
Module is set, is used for the signal quality information of the neighbor cell measured according to described measurement module, the cell reselection parameters of the described neighbor cell of measuring is set;
Select module, be used for the cell reselection parameters that module is provided with being set, from the neighbor cell that described measurement module is measured, select to move into the immigration rank high sub-district of rank than described terminal place macrocell according to described.
Another aspect, the embodiment of the invention also provide a kind of method of cell reselection, and described method comprises:
Terminal is measured neighbor cell according to default measuring condition in the macrocell at current place;
It is sealing family expenses sub-districts that the sub-district is arranged in the neighbor cell of measuring, and this terminal is when sealing home terminal, according to the signal quality information of the neighbor cell of measuring, to determine to satisfy pre-conditioned sealing family expenses sub-district in the sealing family expenses sub-district of measuring;
Judge the sealing family expenses sub-district that whether has terminal unit contractual in the described sealing family expenses sub-district of determining, if, determine whether to move into described signatory sealing family expenses sub-district then according to the signal quality thresholding of described signatory sealing family expenses sub-district.
On the one hand, the embodiment of the invention also provides a kind of terminal again, and described terminal comprises:
Measurement module is used for the macrocell at the current place of described terminal, according to default measuring condition neighbor cell is measured;
Determination module, it is sealing family expenses sub-districts that the neighbor cell that is used for measuring when described measurement module has the sub-district, and when this terminal is the sealing home terminal, according to the signal quality information of the neighbor cell of measuring, in the sealing family expenses sub-district of measuring, determine to satisfy pre-conditioned sealing family expenses sub-district;
The gravity treatment module, be used for judging whether sealing family expenses sub-district that described determination module is determined exists the sealing family expenses sub-district of described terminal unit contractual, if, determine whether to move into described signatory sealing family expenses sub-district then according to the signal quality thresholding of described signatory sealing family expenses sub-district.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
The embodiment of the invention can realize that terminal is moved into and move into the high sub-district of rank, the interference that terminal is subjected to after moving into reduces, and compared with prior art, reduced the mutual interference mutually between terminal and the HNB sub-district.
Description of drawings
Fig. 1 is the method for cell reselection simplified flow chart that the embodiment of the invention one provides;
Fig. 2 is the method for cell reselection simplified flow chart that the embodiment of the invention two provides;
Fig. 3 is the method for cell reselection simplified flow chart that the embodiment of the invention three provides;
Fig. 4 is the terminal simplified structure schematic diagram that the embodiment of the invention four provides;
Fig. 5 is the simplified structure schematic diagram of the terminal that provides of the embodiment of the invention five.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
There is polytype sub-district in the embodiment of the invention, comprising: macrocell, open family expenses sub-district, sealing family expenses sub-districts (CSG sub-district) and semi-open family expenses sub-district (Semi-OpenAccess Cell) etc.Wherein, open family expenses sub-district allows all terminals to insert, (promptly this semi-open family expenses sub-district is not in the white list of this terminal to comprise CSG terminal (promptly this semi-open family expenses sub-district is in the white list of this terminal) and non-CSG terminal, or this terminal does not have white list, or this terminal is not supported the family expenses sub-district), promptly open family expenses sub-district to the type of terminal without limits, the terminal of any kind can insert open family expenses sub-district.Sealing family expenses sub-district allows the CSG terminal to insert, but not the CSG terminal then can not insert.Semi-open family expenses sub-district allows CSG terminal and passerby terminal (passerby's terminal, claim passerby's terminal again) insert, promptly for semi-open family expenses sub-district, CSG terminal and passerby terminal all are legal users, the CSG terminal is than the semi-open family expenses of the preferential access of passerby terminal sub-district, the CSG terminal can be enjoyed business in semi-open family expenses sub-district, and for the passerby terminal, the CSG terminal is enjoyed professional priority height, the behavior of passerby terminal in semi-open family expenses sub-district then is restricted, and includes but not limited to: 1) the passerby terminal is allowed to reside in the semi-open family expenses sub-district and still can not enjoys business; 2) the passerby terminal is allowed to reside in the semi-open family expenses sub-district and can enjoys limited business, and this limited business includes but not limited to: the limited professional and limited business of service number of types of business, COS that service quality is limited.3) when semi-open family expenses local resource is limited, the preferential CSG terminal that inserts, promptly, if this semi-open family expenses sub-district is in the white list of certain terminal, the priority ratio other-end priority height of general this terminal calculates the result based on terminal information by different weights, according to this result the terminal under the HNB is sorted, described terminal information comprises the priority of terminal in the sub-district, in service priority, class of business and the service rate one of at least; Preferably, sort according to aforementioned calculation result order from high to low, the service feature of the terminal the preceding of sorting is higher, ordering after the service feature of terminal lower, therefore the minimum UE of ordering can be switched to other sub-districts, or reduce the minimum UE service rate of ordering; Or at least a business in the minimum UE voice and packet data concurrent service of deletion ordering.Wherein, preferably, can be provided with the weight of the priority of terminal in the sub-district the highest.If the switching between the different system before selecting to switch UE, should consider whether goal systems supports this to be about to the business of the UE of incision.
For example: semi-open family expenses sub-district can provide the bandwidth of 200MB, but the bandwidth of 100MB only is provided for the passerby terminal; Business such as semi-open family expenses sub-district can provide and make a phone call, online, but business of networking is provided only for the passerby terminal; Semi-open family expenses sub-district can provide 10 kinds of business, but 6 kinds of business or the like only is provided for the passerby terminal.Semi-open family expenses sub-district in the embodiment of the invention all has a CSG sign with sealing family expenses sub-district, as CSG ID.
Embodiment one
Referring to Fig. 1, the embodiment of the invention provides a kind of method of cell reselection, and this method comprises:
Step 101: terminal is measured neighbor cell according to measuring condition in the macrocell at current place;
Wherein, measuring condition can be preset in this locality, also can obtain from other places, and the embodiment of the invention is not done concrete qualification.
Step 102:, the cell reselection parameters of the neighbor cell of measuring is set according to the signal quality information of the neighbor cell of measuring;
Step 103: from the neighbor cell of measuring, select to move into the rank sub-district higher than the immigration rank of described macrocell according to the cell reselection parameters that is provided with.
In the present embodiment, terminal is provided with cell reselection parameters according to the cell signal quality information of measuring, and selects to move into the high sub-district of rank according to the cell reselection parameters that is provided with, and the interference that terminal is subjected to after moving into reduces, compared with prior art, reduced mutual interference mutually between terminal and the HNB sub-district.
Embodiment two
Referring to Fig. 2, the embodiment of the invention also provides a kind of method of cell reselection, and sub-district, the current place of the terminal in the present embodiment is a macrocell, does not have the CSG sub-district of this terminal in the neighbor cell, and this method specifically comprises:
Step 201: terminal receives the broadcast of this macrocell in the macrocell at current place; usually can carry multiple parameter in this broadcast; include but not limited to: the ID of this macrocell; the priority of frequency range under this macrocell; the measurement thresholding of this macrocell; parameter of adjacent cell information and sub-district gravity treatment or the like; wherein; measure thresholding and comprise the same frequency thresholding that adopts when measuring co-frequency cell; alien frequencies thresholding that adopts when measuring alien-frequency district and the different system thresholding that adopts when measuring different system cell; this co-frequency cell is meant and the identical sub-district of current macrocell frequency; this alien-frequency district is meant and the different sub-district of current macrocell frequency that different system is meant different Radio Network Systems.
Step 202: terminal is measured homogeneous frequency adjacent area according to the common frequency measurement condition of obtaining in the macrocell at current place, obtains the signal quality information of homogeneous frequency adjacent area.
Neighbor cell in the present embodiment comprises: at least a in macrocell and the home base station cells, this home base station cells comprises: at least a in open family expenses sub-district, semi-open family expenses sub-district and the sealing family expenses sub-district.
Wherein, terminal can be when the signal quality variation of current macrocell, initiates the measurement to neighbor cell, when the signal quality that detects current macrocell as terminal reaches default common frequency measurement threshold value, then initiates the measurement to neighbor cell.Present embodiment is not got rid of terminal and initiate measurement to neighbor cell when being satisfied other condition.
Step 203: terminal is carried out type identification to the homogeneous frequency adjacent area of measuring.
In the embodiment of the invention, terminal is carried out the process of type identification to the homogeneous frequency adjacent area of measuring can be specific as follows:
Terminal identifies the type of discerning the homogeneous frequency adjacent area of measuring by the physical label or the cell type of sub-district.Wherein, the physical label of sub-district, terminal can get access in the pilot tone process.Usually, network side can be reserved the physical label of different sections for dissimilar sub-districts, can identify the type of sub-district by the reservation section of this physical label.Particularly, network side can be with the physical label segmentation, every section sub-district that correspondence is dissimilar, can comprise a plurality of physical labels in every section, for example, ID1 to ID10 is open family expenses sub-district, ID11 to ID20 is semi-open family expenses sub-districts, ID21 to ID30 is the CSG sub-district, when sub-district physical label that terminal gets access in the pilot tone process is ID12, can judge that then this sub-district is semi-open family expenses sub-district or the like.Above-mentioned cell type sign can be carried in the message of broadcast channel, also can be by the transmission of Iur/X2 interface.The Iur interface is UTRA (Universal Telecommunication Radio Access, the general land wireless access) in the system, RNC (Radio Network Controller, radio network controller) is used for carrying out with other RNC the interface of signaling and data interaction; In Eutra (Evolved UTRA, the general land wireless access of evolution) system, eNB (base station) links to each other with adjacent eNB in the network by " X2 interface ", and is similar with the Iur mouth.
Step 204: when learning according to the homogeneous frequency adjacent area type of identification, when the sub-district of the satisfied sub-district reselection conditions of presetting is with the semi-open family expenses of frequency sub-district in the homogeneous frequency adjacent area of measuring, terminal is measured adjacent different frequency/different system cell according to the different-frequency measure condition of obtaining, and obtains the signal quality information of different frequency/different system cell.
Wherein, default sub-district reselection conditions is meant existing R criterion, promptly selects the signal quality information neighbor cell the preceding that sorts, and the signal quality of this neighbor cell the preceding of sorting is stronger than the signal quality of other neighbor cell.In the present embodiment, the neither one sub-district is with the frequency macrocell in the sub-district of the satisfied sub-district reselection conditions of presetting, and all sub-districts of satisfying the sub-district reselection conditions are with the semi-open family expenses of frequency sub-district.
Above-mentioned different-frequency measure condition has multiple, includes but not limited to: measure and be not less than neighbor cell of default different frequency/different system thresholding or the like.Terminal can get access to this different-frequency measure condition from the broadcast that receives.For example, it is 10dB that terminal gets access to the alien frequencies thresholding according to the broadcast of current macrocell, and then terminal is measured the alien-frequency district that adjacent and signal quality is not less than 10dB.
Step 205: terminal is according to the signal quality information of the adjacent different frequency/different system cell of measuring, for the adjacent different frequency/different system cell of measuring is provided with cell reselection parameters, in the present embodiment, cell reselection parameters includes but not limited to: the priority of frequency range, the thresholding of the affiliated frequency range in sub-district, side-play amount (Qoffset)/sluggishness (Qhyst) of sub-district or the like under the sub-district.
Wherein, it is specific as follows the process of cell reselection parameters to be set:
Signal quality information according to the neighbor cell of measuring, in the neighbor cell of measuring, determine to satisfy the sub-district of default sub-district reselection conditions, and discern the cell type that satisfies this sub-district reselection conditions, the description in the process same 203 of identification cell type repeats no more herein;
If satisfy the sub-district of this sub-district reselection conditions is different frequency/different system macrocell, then the macrocell reselecting parameters of this different frequency/different system is set to move into the immigration rank that is superior to the current place of terminal frequency range/system, in this case, may there be different frequency/different system semi-open family expenses sub-district in the neighbor cell of measuring, also may there be different frequency/different system semi-open family expenses sub-district, even there is different frequency/different system semi-open family expenses sub-district, because above-mentioned different frequency/different system macrocell satisfies the sub-district reselection conditions, be that the signal quality ordering is preceding, and the ordering of this different frequency/different system semi-open family expenses sub-district after, therefore pay the utmost attention to the different frequency/different system macrocell that satisfies the sub-district reselection conditions, the immigration that the macrocell of this different frequency/different system promptly is set is superior to the immigration rank of the current place of terminal frequency range/system;
If satisfy the sub-district of this sub-district reselection conditions is different frequency/different system semi-open family expenses sub-district, and then the semi-open family expenses cell reselection parameters of this different frequency/different system is set to move into the immigration rank that rank is not higher than the current place of terminal frequency range/system; In this case, there is different frequency/different system macrocell in the sub-district of measuring, but this different frequency/different system macrocell does not satisfy the sub-district reselection conditions, be signal quality a little less than, comparatively speaking, the interference that the interference ratio that terminal is subjected in the more weak different frequency/different system macrocell of signal quality is subjected in the stronger different frequency/different system semi-open family expenses sub-district of signal quality is little, therefore pay the utmost attention to the semi-open sub-district of current frequency range, so the immigration rank of the macrocell of this different frequency/different system is not higher than the immigration rank of the current place of terminal frequency range/system.
The sub-district reselection conditions of describing in the sub-district reselection conditions and 204 in this step is identical.
Immigration rank in the present embodiment is meant whether terminal moves into a sub-district easily, when terminal moves into the sub-district, pays the utmost attention to the high sub-district of immigration rank and moves into.Particularly, the immigration rank height of a sub-district is set, can comprises: be provided with frequency range under this sub-district the priority height, that the thresholding of frequency range under this sub-district is set is low or that this sub-district is set is lower or the like than the side-play amount/sluggishness of current terminal persistent district.For example, the immigration that cell reselection parameters is set to the different frequency/different system is superior to the immigration rank of the current place of terminal frequency range/system, and specifically comprise: the priority that the different frequency/different system is set is higher than the priority of the current place of terminal frequency range/system; The thresholding that different frequency/different system signal quality perhaps is set is lower than the thresholding of the current place of terminal frequency range/system signal quality; Sub-district side-play amount/sluggishness that the different frequency/different system perhaps is set is lower than the sub-district side-play amount/sluggishness of the current place of terminal frequency range/system.The immigration rank that cell reselection parameters is set to this different frequency/different system is not higher than the immigration rank of the current place of terminal frequency range/system, and specifically comprise: the priority that the different frequency/different system is set is not higher than the priority of the current place of terminal frequency range/system; The thresholding that different frequency/different system cell signal quality thresholding is not less than the current place of terminal frequency range/system signal quality perhaps is set; Sub-district side-play amount/sluggishness that the different frequency/different system perhaps is set is not less than the sub-district side-play amount/sluggishness of the current place of terminal frequency range/system.
In embodiments of the present invention, the above-mentioned mode that cell reselection parameters is set by terminal in this locality can also be replaced by following mode:
Terminal receives the cell reselection parameters that is issued by network side, perhaps terminal receives the broadcast of carrying cell reselection parameters that is issued by network side, perhaps terminal receives the cell reselection parameters that is issued by dedicated signaling, wherein, the cell reselection parameters that receives of terminal comprises: at least a in the side-play amount/sluggishness of the thresholding of frequency range and sub-district under the priority of frequency range, the sub-district under the sub-district.When issuing broadcast by system, further, system can also issue the alternative cell reselection parameters of many covers, and every suit cell reselection parameters all comprises; At least a in the side-play amount/sluggishness of the thresholding of frequency range and sub-district under the priority of frequency range, the sub-district under the sub-district.UE selects a corresponding cover cell reselection parameters as the case may be in these many cover cell reselection parameters, for example, when UE need be provided with respective cell higher immigration rank, then select to move into that higher cover cell reselection parameters of rank, and vice versa.In addition, above-mentioned dedicated signaling can also issue at the cell reselection parameters of UE present case and directly use for UE.
In the present embodiment, when terminal received the cell reselection parameters that network side issues, terminal can select to move into the rank sub-district higher than the access rank of described macrocell according to the cell reselection parameters of receiving from the neighbor cell of measuring.
Step 206: terminal selects to move into the grand immigration rank high sub-district of rank than the current place of terminal according to the cell reselection parameters that is provided with in the neighbor cell of measuring.
Particularly, in the above-mentioned neighbor cell of measuring, select the highest frequency range of priority, in this frequency range, select the highest sub-district of signal quality value;
Perhaps select the minimum frequency range of thresholding, in this frequency range, select the highest sub-district of signal quality value;
Perhaps select the minimum sub-district of side-play amount/sluggishness.
Step 207: terminal determines whether to be moved into selected sub-district according to the thresholding of selected sub-district.
Particularly, terminal can judge whether the selected cell signal quality information that measures is not less than the thresholding of this selected sub-district, if, then be moved into this selected sub-district, otherwise, do not move into this selected sub-district, promptly terminal continues to reside in the current macrocell.
After terminal moves into selected sub-district, can receive the broadcast of this sub-district, carry various parameters in this broadcast, comprise cell reselection parameters, terminal can be upgraded local relevant information of preserving according to the parameter in this broadcast.After preventing that terminal from upgrading local cell reselection parameters, the information of terminal after according to this renewal initiates to be moved into the process of other sub-district again, and cause taking place ping-pong phenomenon (terminal is switched continually) between different sub-districts, further, in the present embodiment, terminal can also be preset a delay time, after terminal moves into selected sub-district, after this default delay time arrives, upgrade local cell reselection parameters information of preserving according to this cell broadcast messages that receives again, particularly, can set delay time by timer, behind timer expiry, upgrade local information of preserving.
Illustrate the implementation process of embodiment 2 below:
Suppose that terminal resides on the macrocell 1, macrocell 1 belongs to frequency range f1, and the sub-district that the last terminal of f1 is adjacent has: semi-open family expenses sub-district 11,12 and 13; Macrocell 2 and 3; Frequency range f2 goes up the adjacent sub-district of terminal to be had: semi-open family expenses sub-district 21,22 and 23, macrocell 4 and 5.
When the signal quality variation of frequency range f1 under the macrocell 1 at the current place of terminal, starting terminal is to the measurement of neighbor cell, when having measured with neighbor cell frequently (being the neighbor cell that f1 goes up terminal), when the co-frequency cell of the satisfied sub-district reselection conditions of presetting of discovery all is semi-open family expenses sub-district, continue adjacent different frequency/different system cell is measured (promptly measuring the signal quality that frequency range f2 goes up the sub-district).
If the macrocell on the f2 4 or 5 is the sub-districts of satisfying above-mentioned sub-district reselection conditions, priority that then can frequency range f2 is set to the priority height than current frequency range f1, or it is the thresholding of the current frequency range f1 of ratio of the threshold setting of frequency range f2 is low, or the ratio macrocell 1 that the Qoffset/Qhyst of macrocell 4 or 5 is provided with is low, makes the macrocell 4 or 5 of terminal on can the easier f2 of switching to.
If the macrocell on the f2 4 or 5 does not satisfy above-mentioned sub-district reselection conditions, or above-mentioned sub-district reselection conditions is satisfied in semi-open family expenses sub-district 21,22 and 23, this moment is low or identical the priority of the ratio f1 that the priority of f2 is provided with, or it is the thresholding of the current frequency range f1 of ratio of the threshold setting of frequency range f2 is high or identical, or, make that terminal can the difficult macrocell 4 or 5 that switches on the f2 with ratio macrocell 1 height that the Qoffset/Qhyst of semi-open family expenses sub-district 21,22 and 23 is provided with.
In the present embodiment, the home base station cells of network side can pass through the Iu/S1 signaling, Iu/S1 is the interface of wireless access network and core net, obtains the type that the signatory attribute information of terminal comes distinguishing terminal, the type that also can come distinguishing terminal according to the terminal type information that prestores.Usually, the terminal type information that home base station cells prestores comprises two kinds of owner and guests, and for the terminal that does not appear in this terminal type information that prestores, home base station cells is identified as passerby's terminal with it.
Present embodiment is when measuring the different frequency/different system macrocell that satisfies the sub-district reselection conditions, non-CSG terminal can be moved into this different frequency/different system macrocell according to the cell reselection parameters that is provided with, thereby can reduce the descending interference of HNB sub-district to the non-CSG terminal in the macrocell; The non-CSG terminal that also can reduce in the macrocell is disturbed the downlink or uplink of HNB terminal, convenience is provided for operator's on-premise network.
Embodiment three
Referring to Fig. 3, the embodiment of the invention also provides a kind of method of cell reselection, and in the present embodiment, terminal is the CSG terminal, and sub-district, current place is macrocell, and this method specifically comprises:
Step 301: terminal receives the broadcast of this macrocell in the macrocell at current place, and according to default measuring condition neighbor cell is measured, and obtains the signal quality information of neighbor cell.
Wherein, the process that terminal is measured neighbor cell is identical with the description among the embodiment 2, repeats no more herein.
Step 302: when having the sub-district to be the CSG sub-district in the neighbor cell that measures,, in the CSG sub-district of measuring, determine to satisfy pre-conditioned CSG sub-district according to the signal quality information of the neighbor cell of measuring.
Wherein, pre-conditionedly be: the signal quality information of sub-district is not less than default signal quality thresholding, and this value is used as the foundation of screening CSG sub-district, is generally the network side setting.If the CSG cell signal quality information that measures is not less than this default signal quality thresholding, show that the CSG cell signal quality that measures is stronger, the CSG sub-district that then can select this to measure; If the CSG cell signal quality information that measures is lower than this default signal quality thresholding, show that the CSG cell signal that measures is second-rate, the CGS sub-district of then not selecting this to measure.According to this default signal quality thresholding, terminal can be selected one or more CGS sub-district.Terminal is obtained this default signal quality thresholding, multiple mode can be arranged, include but not limited in following several mode any: from the broadcast of sub-district, the current place of terminal, read, dedicated signaling from the network side transmission, as the RRC release message, in read and from the information that the SIM (client identity identification) of terminal self card is preserved, read.
Step 303: judge the CSG sub-district that whether has terminal unit contractual in the CSG sub-district of determining, be specially in the present embodiment, obtain the sign of the CSG sub-district of determining, the sign with the signatory CSG sub-district of terminal self storage is identical to judge the sign obtain, if then carry out 304; Otherwise, carry out 306.
In the present embodiment, the sign of CSG sub-district is specially CSG ID.Particularly, terminal can read the CSG ID of this sub-district from the broadcast of the CSG sub-district determined.
Usually all preserve the CSG ID (as white list) of signatory with it CSG sub-district in the CSG terminal, terminal compares CSG ID that reads and the CSG ID that self preserves, if consistent, represents that then this terminal is the contracting terminal of this CSG sub-district; Otherwise this terminal is not the contracting terminal of this CSG sub-district.
Step 304: whether the signal quality information of this signatory CSG sub-district of terminal judges is not less than the signal quality thresholding of this CGS sub-district, if then carry out 305; Otherwise, carry out 306.
All there is the signal quality thresholding of oneself each CSG sub-district, when this CSG cell signal quality information that measures when terminal is not less than the signal quality thresholding of this CSG sub-district, the signal quality that shows this CSG sub-district is stronger, then terminal can move to this CSG sub-district, thereby alleviates in the stronger situation of the suffered interference of current macrocell; If this CSG cell signal quality information that terminal measures is lower than the signal quality thresholding of this CSG sub-district, show that the signal quality of this CSG sub-district is relatively poor, then terminal does not move to this CSG sub-district.The signal quality thresholding that terminal is obtained the CSG sub-district has multiple mode, include but not limited in following several mode any: terminal reads from the broadcast of this CSG sub-district, terminal reads from the broadcast of current persistent district, and terminal reads from the path recorded information of preserving.Wherein, described path recorded information is meant the relevant information of the former sub-district of visiting of terminal record, as sub-district ID, signal quality thresholding, cell reselection parameters or the like, when terminal was visited certain CSG sub-district in the past, can preserve the information of this CSG sub-district in this path recorded information, terminal then can read the ID of this CSG sub-district from this path recorded information.If terminal was not visited this CSG sub-district in the past, then broadcast that the broadcast that terminal can be by reading current area maybe should signatory CSG sub-district is obtained the signal quality thresholding of this signatory CSG sub-district.
Step 305: terminal moves into should signatory CSG sub-district.
Step 306: terminal continues to reside in current macrocell.
Further, after terminal is determined and is moved into signatory CSG sub-district, receive the broadcast of this signatory sealing family expenses sub-district, can also be behind default delay time, upgrade local cell reselection parameters of preserving according to this broadcast, thereby avoid taking place ping-pong phenomenon.
The CSG terminal is measured the CSG sub-district of satisfying default signal quality thresholding earlier in this enforcement, find the CSG sub-district of this CSG terminal unit contractual then therein, judge again whether the signal quality of its signatory CSG sub-district is not less than the signal quality thresholding of this sub-district, if, then terminal is moved in the signatory CSG sub-district, thereby it is professional that terminal can be enjoyed in signatory CSG sub-district, continues to reside in macrocell with terminal and compare, and reduced the interference that terminal is subjected to.
Embodiment four
Referring to Fig. 4, the embodiment of the invention provides a kind of terminal, and this terminal comprises:
Measurement module 401 is used for neighbor cell being measured according to measuring condition at the macrocell at current place;
Module 402 is set, is used for the signal quality information of the neighbor cell measured according to measurement module 404, the cell reselection parameters of the neighbor cell of measuring is set;
Select module 403, be used for, from the neighbor cell that measurement module 401 is measured, select to move into the immigration rank high sub-district of rank than terminal place macrocell according to the cell reselection parameters that module 402 is provided with is set.
Wherein, measuring condition can be preset in this locality, also can obtain from other places, and the embodiment of the invention is not done concrete qualification.
Above-mentioned measurement module 401 specifically comprises:
The common frequency measurement unit is used for according to the common frequency measurement condition of obtaining, and measures and the neighbor cell of macrocell with frequency;
First recognition unit is used to discern the type of the homogeneous frequency adjacent area of measuring the common frequency measurement unit;
The different-frequency measure unit, be used for when learning, in the homogeneous frequency adjacent area that the common frequency measurement unit is measured, when the sub-district of satisfying the sub-district reselection conditions is semi-open family expenses sub-district according to first recognition unit, according to the different-frequency measure condition of obtaining, measure the alien frequencies neighbor cell of macrocell.
Wherein, the sub-district reselection conditions can be preset in this locality, also can obtain from other places, and the embodiment of the invention is not done concrete qualification.
The above-mentioned module 402 that is provided with can specifically comprise:
Second recognition unit is used for the signal quality information of the neighbor cell measured according to measurement module 401, the sub-district of in the neighbor cell of measuring, determining to satisfy the sub-district reselection conditions, and the cell type of sub-district reselection conditions is satisfied in identification;
First is provided with the unit, be used for when second recognition unit identifies the sub-district of satisfying the sub-district reselection conditions and is different frequency/different system macrocell, the immigration that described cell reselection parameters is set to the different frequency/different system is superior to the immigration rank of the current place of described terminal frequency range/system;
Second is provided with the unit, be used for when second recognition unit identifies the sub-district of satisfying the sub-district reselection conditions and is different frequency/different system semi-open family expenses sub-district, the immigration rank that described cell reselection parameters is set to the different frequency/different system is not higher than the immigration rank of the current place of described terminal frequency range/system.
Further, above-mentioned first the combination that the unit can specifically comprise following norator unit or norator unit is set:
First priority is provided with subelement, and the priority that is used to be provided with described different frequency/different system is higher than the priority of the current place of described terminal frequency range/system;
The first threshold setting subelement, the thresholding that is used to be provided with described different frequency/different system signal quality is lower than the thresholding of described terminal place frequency range/system signal quality;
First side-play amount/sluggishness is provided with subelement, and the sub-district side-play amount/sluggishness that is used to be provided with described different frequency/different system is lower than the sub-district side-play amount/sluggishness of described terminal place frequency range/system.
Above-mentioned second is provided with the combination that the unit can specifically comprise following norator unit or norator unit:
Second priority is provided with subelement, and the priority that is used to be provided with described different frequency/different system is not higher than the priority of the current place of described terminal frequency range/system;
The second threshold setting subelement, the thresholding that is used to be provided with described different frequency/different system signal quality is not less than the thresholding of described terminal place frequency range/system signal quality;
Second side-play amount/sluggishness is provided with subelement, and the sub-district side-play amount/sluggishness that is used to be provided with described different frequency/different system is not less than the sub-district side-play amount/sluggishness of described terminal place frequency range/system.
Above-mentioned selection module 403 can specifically comprise following any unit or the combination of unit arbitrarily:
The priority selected cell is used in the neighbor cell that measurement module 401 is measured, selecting the highest frequency range of priority according to the cell reselection parameters that module 402 is provided with is set, and selects the highest sub-district of signal quality value in this frequency range;
The thresholding selected cell is used in the sub-district that measurement module 401 is measured, selecting the minimum frequency range of thresholding according to the cell reselection parameters that module 402 is provided with is set, and selects the highest sub-district of signal quality value in this frequency range;
Side-play amount/sluggish selected cell is used in the sub-district that measurement module 401 is measured, selecting the minimum sub-district of side-play amount/sluggishness according to the cell reselection parameters that module 402 is provided with is set.
Further, above-mentioned terminal can also comprise:
Determination module is used to determine whether to move into the sub-district of selecting module 403 to select;
Update module is used for receiving the broadcast of the sub-district of selecting after determination module determines that immigration and terminal are moved into the sub-district of selection, behind default delay time, upgrades the cell reselection parameters that preserve this locality according to broadcast.
Present embodiment is when measuring the different frequency/different system macrocell that satisfies the sub-district reselection conditions, non-CSG terminal can be moved into this different frequency/different system macrocell according to the cell reselection parameters that is provided with, thereby can reduce the descending interference of HNB sub-district to the non-CSG terminal in the macrocell; The non-CSG terminal that also can reduce in the macrocell is disturbed the downlink or uplink of HNB terminal, convenience is provided for operator's on-premise network.
Embodiment five
Referring to Fig. 5, corresponding with the method for cell reselection of the foregoing description three, present embodiment provides a kind of terminal, and this terminal comprises:
Wherein, measuring condition can be preset in this locality, also can obtain from other places, and the embodiment of the invention is not done concrete qualification.
Further, above-mentioned gravity treatment module 503 specifically comprises:
Judging unit is used to obtain the sign of the sealing family expenses sub-district of determining, and the sign with the signatory sealing family expenses sub-district of terminal storage is identical to judge the sign obtain;
The gravity treatment unit, be used for when the result of judgment unit judges when being, according to the signal quality thresholding of signatory sealing family expenses sub-district, determine whether to move into signatory sealing family expenses sub-district.
Further, above-mentioned terminal can also comprise:
Update module is used for receiving the broadcast of signatory sealing family expenses sub-district after terminal is determined and is moved into signatory sealing family expenses sub-district, behind default delay time, upgrades local cell reselection parameters of preserving according to broadcast.
The CSG terminal is when carrying out the sub-district gravity treatment in this enforcement, at first according to measuring condition adjacent sub-district is measured by measurement module, then after finding the signatory sub-district of this CSG terminal, judge again whether the signal quality of its signatory sub-district is not less than the signal quality thresholding of this sub-district, if then terminal is moved in the signatory CSG sub-district, thereby it is professional that terminal can be enjoyed in signatory CSG sub-district, continue to reside in macrocell with terminal and compare, reduced the interference that terminal is subjected to.
The embodiment of the invention can realize that corresponding software can store in the storage medium that can read by software, for example, and in the hard disk of computer, floppy disk or the CD.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (21)
1. a method of cell reselection is characterized in that, described method comprises:
Terminal is measured neighbor cell according to measuring condition in the macrocell at current place;
According to the signal quality information of the neighbor cell of measuring, the cell reselection parameters of the described neighbor cell of measuring is set;
From the described neighbor cell of measuring, select to move into the rank sub-district higher according to described cell reselection parameters than the immigration rank of described macrocell.
2. method of cell reselection according to claim 1, it is characterized in that, described neighbor cell comprises: at least a in macrocell and the home base station cells, and described home base station cells comprises: at least a in open family expenses sub-district, semi-open family expenses sub-district and the sealing family expenses sub-district;
Described open family expenses sub-district allows all terminals to insert;
Described semi-open family expenses sub-district allows sealing home terminal and passerby's terminal to insert, described sealing home terminal is enjoyed professional priority and is higher than described passerby's terminal in described semi-open family expenses sub-district, described sealing home terminal is than the described semi-open family expenses of the preferential access of described passerby's terminal sub-district.
3. method of cell reselection according to claim 2 is characterized in that, described passerby's terminal can not be enjoyed professional in described semi-open family expenses sub-district or enjoy limited business.
4. method of cell reselection according to claim 2, it is characterized in that, when described semi-open family expenses local resource is limited, preferential access into closed home terminal, and calculate by different weights based on terminal information, according to result calculated order from high to low terminal is sorted, select the minimum terminal of ordering, the terminal that described ordering is minimum switches to other sub-districts, or reduce the service rate of the minimum terminal of described ordering, or delete at least a business in the minimum terminal concurrence business of described ordering.
5. method of cell reselection according to claim 4, it is characterized in that, described terminal information comprises: at least a in priority, service priority, class of business and the service rate of terminal in the sub-district, wherein the shared weight of the priority of terminal in the sub-district is the highest.
6. method of cell reselection according to claim 1 is characterized in that, described terminal is measured neighbor cell according to measuring condition in the macrocell at current place, specifically comprises:
According to the common frequency measurement condition of obtaining, measure and the neighbor cell of described macrocell with frequency;
The type of the homogeneous frequency adjacent area that identification is measured;
When the sub-district of satisfying the sub-district reselection conditions in the described homogeneous frequency adjacent area of measuring is semi-open family expenses sub-district,, measure the alien frequencies neighbor cell of described macrocell according to the different-frequency measure condition of obtaining.
7. method of cell reselection according to claim 1 is characterized in that, the neighbor cell signal quality information that described basis is measured is provided with the cell reselection parameters of the described neighbor cell of measuring, and specifically comprises:
According to the signal quality information of the neighbor cell of measuring, in the neighbor cell of measuring, determine to satisfy the sub-district of sub-district reselection conditions, and the cell type of sub-district reselection conditions is satisfied in identification;
If satisfy the neighbor cell of described sub-district reselection conditions is different frequency/different system macrocell, and the immigration that then described cell reselection parameters is set to the different frequency/different system is superior to the immigration rank of the current place of described terminal frequency range/system;
If satisfy the neighbor cell of described sub-district reselection conditions is different frequency/different system semi-open family expenses sub-district, and the immigration rank that then described cell reselection parameters is set to the different frequency/different system is not higher than the immigration rank of the current place of described terminal frequency range/system.
8. method of cell reselection according to claim 7 is characterized in that, the immigration that described cell reselection parameters is set to the different frequency/different system is superior to the immigration rank of the current place of described terminal frequency range/system, specifically comprises:
The priority that described different frequency/different system is set is higher than the priority of the current place of described terminal frequency range/system;
The thresholding that described different frequency/different system signal quality perhaps is set is lower than the thresholding of described terminal place frequency range/system signal quality;
Sub-district side-play amount/sluggishness that described different frequency/different system perhaps is set is lower than the sub-district side-play amount/sluggishness of described terminal place frequency range/system.
9. method of cell reselection according to claim 7 is characterized in that, the immigration rank that described cell reselection parameters is set to the different frequency/different system is not higher than the immigration rank of the current place of described terminal frequency range/system, specifically comprises:
The priority that described different frequency/different system is set is not higher than the priority of the current place of described terminal frequency range/system;
The thresholding that described different frequency/different system signal quality perhaps is set is not less than the thresholding of described terminal place frequency range/system signal quality;
Sub-district side-play amount/sluggishness that described different frequency/different system perhaps is set is not less than the sub-district side-play amount/sluggishness of described terminal place frequency range/system.
10. method of cell reselection according to claim 1 is characterized in that, described method further comprises:
After determining and being moved into the sub-district of described selection, receive the broadcast of the sub-district of described selection;
Behind default delay time, upgrade local cell reselection parameters of preserving according to described broadcast.
11. method of cell reselection according to claim 1 is characterized in that, described method also comprises:
Receive the cell reselection parameters that network side issues by broadcast, perhaps, receive the cell reselection parameters that network side issues by dedicated signaling;
From the described neighbor cell of measuring, select to move into the rank sub-district higher according to the cell reselection parameters of receiving than the immigration rank of described macrocell.
12. a method of discerning cell type is characterized in that, described method specifically comprises:
Obtain the type identification of sub-district physical label or sub-district;
By the type identification of described sub-district physical label or sub-district, the identification cell type.
13. the method for identification cell type according to claim 12 is characterized in that, describedly is specially by described sub-district physical label identification cell type:
According to the sub-district physical label that the sub-district physical label is reserved section and obtained, the identification cell type.
14. the method for identification cell type according to claim 12 is characterized in that, the described type identification that obtains the sub-district is specially:
From broadcast channel message, obtain, perhaps obtain by the Iur/X2 interface.
15. the method for identification cell type according to claim 12 is characterized in that, described method also comprises:
When the cell type that identifies is semi-open family expenses sub-district, read the sign of the closed signed user group of carrying in the message from broadcast channel, the sign of the sign of the closed signed user group that reads and the signatory closed signed user group of self preserving is compared, if consistent, then confirm it self is the contracting terminal of the described sub-district of identifying; Otherwise, confirm it self is not the contracting terminal of the described sub-district of identifying.
16. a terminal is characterized in that, described terminal comprises:
Measurement module is used for neighbor cell being measured according to measuring condition at the macrocell at current place;
Module is set, is used for the signal quality information of the neighbor cell measured according to described measurement module, the cell reselection parameters of the described neighbor cell of measuring is set;
Select module, be used for the cell reselection parameters that module is provided with being set, from the neighbor cell that described measurement module is measured, select to move into the immigration rank high sub-district of rank than described terminal place macrocell according to described.
17. terminal according to claim 16 is characterized in that, described measurement module specifically comprises:
The common frequency measurement unit is used for according to the common frequency measurement condition of obtaining, and measures and the neighbor cell of described macrocell with frequency;
First recognition unit is used to discern the type of the homogeneous frequency adjacent area of measuring described common frequency measurement unit;
The different-frequency measure unit, be used for when learning, in the homogeneous frequency adjacent area that described common frequency measurement unit is measured, when the sub-district of satisfying the sub-district reselection conditions is semi-open family expenses sub-district according to described first recognition unit, according to the different-frequency measure condition of obtaining, measure the alien frequencies neighbor cell of described macrocell.
18. terminal according to claim 16 is characterized in that, the described module that is provided with specifically comprises:
Second recognition unit is used for the neighbor cell signal quality information measured according to described measurement module, the sub-district of in the neighbor cell of measuring, determining to satisfy the sub-district reselection conditions, and the cell type of described sub-district reselection conditions is satisfied in identification;
First is provided with the unit, be used for when described second recognition unit identifies the sub-district of satisfying described sub-district reselection conditions and is different frequency/different system macrocell, the immigration that described cell reselection parameters is set to the different frequency/different system is superior to the immigration rank of the current place of described terminal frequency range/system;
Second is provided with the unit, be used for when described second recognition unit identifies the sub-district of satisfying described sub-district reselection conditions and is different frequency/different system semi-open family expenses sub-district, the immigration that described cell reselection parameters is set to the different frequency/different system is superior to the immigration rank of the current place of described terminal frequency range/system.
19. terminal according to claim 18 is characterized in that, described first is provided with the combination that the unit specifically comprises following norator unit or norator unit:
First priority is provided with subelement, and the priority that is used to be provided with described different frequency/different system is higher than the priority of the current place of described terminal frequency range/system;
The first threshold setting subelement, the thresholding that is used to be provided with described different frequency/different system signal quality is lower than the thresholding of described terminal place frequency range/system signal quality;
First side-play amount/sluggishness is provided with subelement, and the sub-district side-play amount/sluggishness that is used to be provided with described different frequency/different system is lower than the sub-district side-play amount/sluggishness of described terminal place frequency range/system.
20. terminal according to claim 18 is characterized in that, described second is provided with the combination that the unit specifically comprises following norator unit or norator unit:
Second priority is provided with subelement, and the priority that is used to be provided with described different frequency/different system is not higher than the priority of the current place of described terminal frequency range/system;
The second threshold setting subelement, the thresholding that is used to be provided with described different frequency/different system signal quality is not less than the thresholding of described terminal place frequency range/system signal quality;
Second side-play amount/sluggishness is provided with subelement, and the sub-district side-play amount/sluggishness that is used to be provided with described different frequency/different system is not less than the sub-district side-play amount/sluggishness of described terminal place frequency range/system.
21. terminal according to claim 16 is characterized in that, described terminal also comprises:
Determination module is used to determine whether to move into the sub-district that described selection module is selected;
Update module, be used for after described determination module determines that immigration and described terminal are moved into the sub-district of described selection, receive the broadcast of the sub-district of described selection, behind default delay time, upgrade local cell reselection parameters of preserving according to described broadcast.
Priority Applications (2)
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|---|---|---|---|
| CN2009101339248A CN101651961B (en) | 2008-08-11 | 2009-04-10 | Method and terminal for reselecting cell |
| PCT/CN2009/073187 WO2010017761A1 (en) | 2008-08-11 | 2009-08-11 | Method and terminal for cell reselection |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810210236.2 | 2008-08-11 | ||
| CN200810210236 | 2008-08-11 | ||
| CN2009101339248A CN101651961B (en) | 2008-08-11 | 2009-04-10 | Method and terminal for reselecting cell |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210181388.0A Division CN102711195B (en) | 2008-08-11 | 2009-04-10 | Cell reselection method and terminal |
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| CN101651961A true CN101651961A (en) | 2010-02-17 |
| CN101651961B CN101651961B (en) | 2012-06-20 |
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| CN2009101339248A Active CN101651961B (en) | 2008-08-11 | 2009-04-10 | Method and terminal for reselecting cell |
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| CN (1) | CN101651961B (en) |
| WO (1) | WO2010017761A1 (en) |
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