CN101505476B - Cellular communication system and cell filtering method thereof - Google Patents
Cellular communication system and cell filtering method thereof Download PDFInfo
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- CN101505476B CN101505476B CN200910047451XA CN200910047451A CN101505476B CN 101505476 B CN101505476 B CN 101505476B CN 200910047451X A CN200910047451X A CN 200910047451XA CN 200910047451 A CN200910047451 A CN 200910047451A CN 101505476 B CN101505476 B CN 101505476B
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Abstract
The invention discloses a cellular communication system and a cell filtration method thereof. The communication system comprises user equipment and a plurality of base station devices, and the base station devices comprise a macro base station, a micro base station and a home base station; a neighbor cell list is established in the macro base station and the home base station, and the list comprises neighbor cell information of neighbor macro base station and home base stations; the neighbor cell list comprises the following attributes: neighbor cell information, tracking cell identification of cells, whether the cells are private, whether the cells can be switched, and whether X2 interfaces exist; the neighbor cell information of the macro base station comprises cell information of adjacent macro base stations and home base stations within the coverage range; and the neighbor cell information of the home base station comprises cell information of adjacent home base stations and cell information of macro base stations where the home base stations are positioned. The cellular communication system and the cell filtration method thereof can reduce signaling cost and improve switching performance.
Description
Technical field
The invention belongs to the wireless communication technique field, relate to a kind of cell filtering method, relate in particular to a kind of cell filtering method of cellular communication system; The invention still further relates to above-mentioned cellular communication system.
Background technology
Most areas in the whole world, new network will be deployed in higher frequency band, and high frequency is poorer than the penetrability of low frequency, therefore, Home eNodeB will be a kind of attractive method.Home eNodeB is a kind of user's dwelling house honeycomb access point, is applicable to family and office environment.Its broadband connection by the user (as, DSL) insert the core network of mobile operator, can remedy more weak indoor signal and provide network to require the bandwidth that reaches.Home eNodeB can provide high-quality voice, the data rate of the best and more cheap rate with being connected for the calling of initiating at home.Home eNodeB can provide best coverage rate for most mobile calls of initiating, and can also provide Exponential growth for the capacity of return network.
In macro base station coverage area, can adopt Home eNodeB to improve and cover and provide the more service of good quality.Home eNodeB can for closed contracted user group (Close Subscriber Group, CSG) and its member service is provided, CSG can be one family or nearby geographic location can access to family base station Any user.The CSG sub-district that has is that closed type inserts, and only provides access service for one group of authorized user; And the CSG sub-district that has is open the access, can be all users access service is provided.It is not real CSG Home eNodeB, may be similar to a macro base station for terminal.If consider special covering demand, in the zone one or more CSG sub-district can be arranged.A CSG sub-district can be that the one family base station is used to provide the LTE service, also can provide WCDMA or other traditional 3GPP wireless access service in the one family base station.The user can be individual or a group, can use Home eNodeB to obtain the service that needs in the zone of needs, and in terminal one of preservation all can insert the white list of CSG sub-district.
3GPP has carried out some researchs to Home eNodeB, but the application of Home eNodeB still may bring challenges to the related work of following new network.Access control between Home eNodeB and to take over seamlessly be a key.And all need terminal to carry out the measurement report judgement in access control and the switching, in the intensive zone of Home eNodeB, as the zone that campus or residential quarters etc. needs focus to cover, the number of cells that terminal need be measured is many.At present, a neighbor cell lists is only safeguarded in research between macro base station, and should tabulation is created by ANR (the Automatic Neighbor Relation) function of network and safeguard.Under the situation for the Home eNodeB existence, Home eNodeB is not added neighbor cell lists, and Home eNodeB itself does not have neighbor cell lists yet, therefore, terminal can not depend on neighbor cell lists in moving between the macro base station and between Home eNodeB and macro base station, this will make terminal measure the sub-district that all can insert and forbid inserting, the measurement resource and the power consumption of waste terminal.If the density that Home eNodeB distributes is very big, very large signaling consumption will be brought in all sub-districts around the terminal searching, and may cause switching delay to increase, and reduce performance of handoffs.Especially when terminal is roamed in network with idle pulley, may ceaselessly search the sub-district.Therefore,, should reduce the amount of information of terminal, especially the measurement of the specific cell that can not insert terminal to the CSG cell measurement for reducing the system signaling expense and saving the terminal power capacity as far as possible.
On the other hand, demand along with customer service, the number of the Home eNodeB that public domain and family dispose will constantly increase, make the CSG white list of terminal comprise all and can insert CSG sub-district CSG ID, this will be a very big burden concerning terminal, moreover in fact comprise all inserted CSG sub-districts and be difficult to.If terminal enters a CSG sub-district, the CSG ID of this sub-district is not in the white list of terminal, and the candidate cell list after making the white list of terminal filter then may cause inserting or handoff failure, thereby cause call drop or service quality to descend for empty.
Though not using the advantage of neighbor cell lists is to reduce system information load and wireless network planning, adopt terminal to come search cell and report to network, its cost is will bring unnecessary signaling to increase and the burden of terminal.The thing followed is the increase of the complexity of terminal equipment and network boundary problem.And might not be best target cell by the Target cell that terminal is selected, will cause the reduction of switching problem.
The reduction of performance of handoffs is because the Target cell that terminal is selected might not be the best target cell of switching.Unsuccessful switching may be that the load of Target cell is too high, high interference levels or hardware problem etc. cause, and this will reduce the performance of network.And by neighbor list method of the present invention, maintenance of neighbor information in macro base station and Home eNodeB can be checked some condition of Target cell (as, the load of test-target sub-district) by the cell-of-origin before switching, and selected suitable Target cell.
Signaling consumption unnecessary between air interface is embodied in: some neighbor cell is bad sub-district from performance of handoffs, and terminal constantly attempts inserting, and may cause terminal ceaselessly to give network the report information of these sub-districts, causes unnecessary signaling consumption.
Increasing terminate load and complexity is embodied in: if terminal is in advance without any the information of neighbor cell, the information of all sub-districts comprised the cell information that those limiting terminals insert around terminal will be searched for, and read all cell system information contents by the terminal measurement, with distinguish this sub-district be common cell or private cell, increased the burden and the complexity of terminal.In this case, need and can only measure some sub-district by limiting terminal, for example, the sub-district that need measure by the neighbor list indicating terminal.Under the scene of border, terminal may not be distinguished the sub-district from the different operating person, and terminal need not be reported these cell informations in this case.And need terminal to safeguard the CSG ID white list that all can insert, and the number of following CSG sub-district is very huge, in the public domain (as, the airport, the market) Home eNodeB of Bu Shuing, all be the CSG sub-district that terminal can insert, then the CSG number of terminal maintenance will be very big, further increase the burden of terminal.
Summary of the invention
Technical problem to be solved by this invention is: a kind of cellular communication system cell filtering method is provided, can reduces signaling consumption, improve performance of handoffs.
In addition, the present invention also provides above-mentioned cellular communication system.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of cell filtering method of cellular communication system, described communication system comprises subscriber equipment and plurality of base station devices, base station equipment comprises macro base station, little base station, Home eNodeB; Set up neighbor cell lists in macro base station and in the Home eNodeB, this tabulation comprises neighbours' the macro base station and the neighbor cell message of Home eNodeB; Comprise following attribute in the neighbor cell lists: the tracking cell ID of neighbor cell message, sub-district, and the sub-district whether privately owned, whether changeable, whether X2 interface (interface between base station and the base station) arranged; The neighbor cell message of described macro base station comprises home base station cells information in adjacent macro base station and the coverage; The neighbor cell message of described Home eNodeB comprises adjacent home base station cells information and Home eNodeB place macro base station cell information.
As a preferred embodiment of the present invention, this method comprises filtration step: fall to be not suitable for the cell information that counterpart terminal inserts according to the information filtering of described neighbor cell lists.
As a preferred embodiment of the present invention, when in mobile communication system, carrying out direct-cut operation or sub-district gravity treatment, the macro base station at terminal place and Home eNodeB will be reported neighbor cell lists to terminal, and described neighbor cell lists falls to be not suitable for the cell information that counterpart terminal inserts according to the information filtering of described neighbor cell lists.
As a preferred embodiment of the present invention, described filtration step comprises: follow the tracks of cell filtering, access permission filtration, switch the permission filtration.
As a preferred embodiment of the present invention, described tracking cell filtering comprises, described tracking cell filtering is followed the tracks of cell ID by described terminal place, carry out filtration treatment, to produce the sub-district neighbor list of following the tracks of cell filtering, make that the tracing area that is included in the neighbor cell place in the described neighbor cell lists is the tracing area at terminal place.
As a preferred embodiment of the present invention, described tracking sub-district comprises that macro base station is followed the tracks of the sub-district and CSG follows the tracks of the sub-district, and according to setting regular division, name and assigned identification number, a CSG sub-district has one or more CSG to follow the tracks of the sub-district.
As a preferred embodiment of the present invention, described access permission filters and comprises, described access permission filters the privately owned attribute of the neighbor cell in the neighbor cell lists that filters by described switching permission, filtration treatment is carried out in the sub-district that will have privately owned sign, insert the neighbor cell lists that filters to produce, make that the neighbor cell in the neighbor cell lists of place is the sub-district that common cell and authorization terminal insert.
As a preferred embodiment of the present invention, filtration treatment is carried out in the sub-district that will have privately owned sign, comprises that the CSG cell filtering of this sub-district ID falls with having in privately owned sign and the terminal not.
As a preferred embodiment of the present invention, sub-district ID comprises in the described terminal, the privately owned CSG sub-district ID that can authenticate access that preserves in the terminal equipment.
As a preferred embodiment of the present invention, described switching permission is filtered and is comprised, described switch filtering is by the switch attribute of the neighbor cell in the neighbor cell lists of described tracking cell filtering, filtration treatment is carried out in the sub-district that will have No HO sign, indicate with the No HO that do not have that produces the neighbor cell lists of switch filtering, make the neighbor cell that is included in the described neighbor cell lists; Wherein said No HO is masked as " can not be switched or gravity treatment " sign.
A kind of cellular communication system comprises subscriber equipment and plurality of base station devices, and base station equipment comprises macro base station, little base station, Home eNodeB.
As a preferred embodiment of the present invention, in macro base station and in the Home eNodeB, set up neighbor cell lists, this tabulation comprises neighbours' the macro base station and the neighbor cell message of Home eNodeB; The tracking cell ID that comprises neighbor cell message, sub-district in the neighbor cell lists, and the sub-district whether privately owned, whether changeable, whether X2 interface arranged; The neighbor cell message of described macro base station comprises home base station cells information in adjacent macro base station and the coverage; The neighbor cell message of described Home eNodeB comprises adjacent home base station cells information and Home eNodeB place macro base station cell information.
Beneficial effect of the present invention is: the present invention is under the scene that comprises macro base station and Home eNodeB, and the user can insert public Home eNodeB and authorize the privately owned Home eNodeB of its access.The present invention is by setting up the neighbor cell message tabulation in the macro base station and in Home eNodeB, and to the filtration of neighbor list, the relevant information of suitable neighbor cell is provided for terminal, make terminal avoid measuring and report that some can not or be not suitable for inserting the information of sub-district, measure to reduce terminal, control signaling consumption to a certain extent, improved performance of handoffs.The present invention can reduce the metrical information amount and the Measuring Time of terminal, otherwise complicated neighboring BS relationship, the tabulation of long Target cell and longer Measuring Time will cause the more loss of long time delay and service quality.
Description of drawings
Fig. 1 is the flow chart of the inventive method.
Fig. 2 is the structural representation of mobile communication system among the embodiment.
Fig. 3 is the structural representation of terminal among the embodiment.
Fig. 4 is the flow chart of neighbor-cell-list filtering method step among the embodiment.
Fig. 5 is the structural representation of base station among the embodiment.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
The present invention can be applied in broadband communication network or the special cordless communication network, especially in switching in UMTS, UTRAN, LTE or the E-UTRAN network and access and the Home eNodeB remote activation scene.
The present invention is by setting up the neighbor cell message tabulation in macro base station and in Home eNodeB, and to the filtration of neighbor list, the relevant information of suitable neighbor cell is provided for terminal, make terminal avoid measuring and report that some can not or be not suitable for inserting the information of sub-district, measure to reduce terminal, reduce signaling consumption to a certain extent, improved performance of handoffs.
In the present invention, each macro base station has a grand tracking sub-district (MTA, Macro Tracing Area), and its scope is the coverage of macro base station.CSG sub-district in the macro base station coverage has unique sign, a plurality of CSG sub-district can belong to a CSG and follow the tracks of the sub-district, and a CSG sub-district can belong to a plurality of tracking sub-district, whether to definition cell attributes such as all users' openings or cell capacities, managed by operation maintenance center by cell attribute according to the sub-district for neighbor cell lists of the present invention.Only need in the terminal of the present invention to preserve the privately owned CSG sub-district ID that can authenticate access, be generally the CSG sub-district in family and the office, quantity is few.
Macro base station/Home eNodeB selects the CSG identical with the tracking cell ID of terminal to follow the tracks of the cell ID inlet in the neighbor cell lists of its maintenance, the privately owned CSG cell list of preserving in privately owned and switch attribute by sub-district in the neighbor list and the terminal that can authenticate access filters the neighbor cell lists in this TTAI (Target Tracing AreaIdentity) zone then, at first filter out and have in Private and the terminal the not CSG sub-district of this sub-district ID in the neighbor list, filter the sub-district that has No HO (can not be switched or gravity treatment) indication then, produce neighbor cell lists through filtering, the neighbor cell message that has only suitable terminal is retained in the neighbor cell lists, makes terminal need not measure private cell and overburden sub-district that limiting terminal inserts.In addition, when terminal moves in the RRC_IDLE pattern, carry out the sub-district gravity treatment and also do not select these sub-districts, flow process as shown in Figure 1.
Neighbor cell lists in macro base station of the present invention and the Home eNodeB can be defined according to operating system by ANR (the Automatic Neighbor Relation) function of network and create and maintenance, and neighbor cell lists information can be passed through SI (System Information) or dedicated mode transmission.Though only need send part neighbor cell lists information,,, also can increase the SI load although there is not traditional NCL (NetworkConnection Link) height if send by SI.Another implementation method is to be transmitted by the RRC of special use (Radio Resource Control) signaling.This neighbor cell lists can be used between interior frequently/frequency and the measurement between different radio access technologies.Therefore, this neighbor cell lists method provides certain ability that signaling is controlled and Target cell switches for the network operator, can avoid the burden and the power consumption of performance of handoffs reduction, signaling consumption and terminal to a certain extent.
Embodiment two
Fig. 2 is the schematic construction block diagram that is used to realize the mobile communication system of the embodiment of the invention.This wireless communication system comprises macro base station, Home eNodeB, core network, mobile management entity/gateway and wireless user equipment.In the macro base station a plurality of Home eNodeB can be arranged, they link to each other with femto gateway by modes such as DSL; The embodiment of the invention is not limited to the structure of Fig. 2.
A plurality of CSG sub-district can belong to one and follow the tracks of sub-district (TA), macrocellular difference on every side, such tracking sub-district can be called CSG TA (can be with reference to U.S. patent Ser.No.12/044,491 documents), macrocellular on every side relatively large (as, several kilometers of minimum coverings), adopt macro base station to cover.Home eNodeB is generally in the covering among a small circle of family, company or coffee-house etc.In embodiments of the present invention, the CSG sub-district in the macro base station coverage has unique sign.
The embodiment of the invention is set up the neighbor cell message tabulation in macro base station and Home eNodeB, and by filtration to neighbor list, the relevant information of suitable neighbor cell is provided for terminal, can be so that terminal avoids measuring and reporting the information of the sub-district that some can not or be not suitable for inserting, reducing terminal measures, control signaling consumption to a certain extent, improved performance of handoffs.
In the present embodiment, each macro base station has a grand tracking sub-district, and its scope is the coverage of macro base station, and follows the tracks of cell ID by one of system definition.And the CSG sub-district in the macro base station coverage has unique sign, and a plurality of CSG sub-district can belong to a CSG and follow the tracks of the sub-district, and a CSG sub-district can belong to a plurality of tracking sub-district, and is that one of the little area definition of each CSG is followed the tracks of cell ID.Whether to definition cell attributes such as all users' openings or cell capacities, managed by operation maintenance center by cell attribute according to the sub-district for neighbor cell lists of the present invention.
Neighbor cell lists can also be as a form stores in macro base station and Home eNodeB, and its content is as shown in table 1.Comprising a local district identification (LCI, Local Cell Identifier) in each neighborhood is local macro base station or Home eNodeB sign; And purpose is followed the tracks of cell ID (TTAI, Target Trace AreaIdentifier), for the macro base station node, TTAI comprises that all CSG that its neighbours' macro base station is followed the tracks of in Cell Identity CI and this macro base station coverage follow the tracks of cell ID, for Home eNodeB, its TTAI comprises that its place CSG follows the tracks of Cell Identity CI and the place macro base station is followed the tracks of Cell Identity CI, and the one family base station can belong to a plurality of CSG and follow the tracks of the sub-district.A purpose cell ID (TCI, Target Cell Identifier) is the CSG sub-district in the specific tracking sub-district or the identification number of macro base station sub-district.It is privately owned access sub-district that Private sign (privately owned sign) is indicated this CSG sub-district, has only specific terminal to insert, and this sub-district of No HO sign expression can not be switched or gravity treatment, and No X2 sign shows whether X2 interface is arranged.Limited neighbor cell lists can be collected and safeguards by definition ANR function among the 3GPP.Only need in the terminal to preserve the closed CSG cell list that oneself can authenticate access, the CSG number of cells that is generally in family and the office is few.
Table 1 neighbor cell relation table
Only need in the terminal to preserve the privately owned CSG sub-district ID that can authenticate access, quantity is few, is generally the CSG sub-district in family and the office.The terminal structure of present embodiment as shown in Figure 3, the privately owned CSG sub-district ID that terminal can authenticate access is kept in the special neighbor cell lists, special neighbor tabulation can be stored in the terminal memory.
The neighbor-cell-list filtering method flow process of the embodiment of the invention is as shown in Figure 4:
Macro base station/Home eNodeB at first selects the purpose identical with the tracking cell ID of terminal to follow the tracks of sub-district (TTAI) sign inlet in cell list, then by whether privately owned in the neighbor list and can switch attribute and terminal in the privately owned CSG cell list that can authenticate access preserved, the cell list in this TTAI zone is filtered.At first filter out and have in Private and the terminal the not CSG sub-district of this sub-district ID in the neighbor list, filter the sub-district that has No HO indication then, produce sub-district neighbor list, make and have only suitable neighbor cell message to be retained in the neighbor cell lists through filtering.Make terminal need not measure limiting terminal access into closed formula sub-district and overburden sub-district and report to network.The defined filtering treater of the embodiment of the invention has this function.In addition, when terminal moves in the RRC_IDLE pattern, carry out the sub-district gravity treatment and also do not select these sub-districts.
The base station of the embodiment of the invention (macro base station/Home eNodeB) structure as shown in Figure 5.The neighbor cell lists of macro base station/Home eNodeB is kept in its memory, when the needs terminal was measured, terminal sent to macro base station/Home eNodeB with its special neighbor cell lists, filtered through filtering treater, obtain being fit to the neighbor cell message tabulation of terminal, and send to terminal.
Neighbor cell lists in macro base station and the Home eNodeB can be defined according to operating system by the ANR function of network and create and maintenance, and neighbor cell lists information can be by SI or dedicated mode transmission.Though only need send part neighbor cell lists information,, not have traditional NCL height although then can increase the SI load if send by SI.Another implementation method is the radio resource control signaling transmission by special use.This neighbor cell lists can be used between interior frequently/frequency and the measurement between different radio access technologies.Therefore, this neighbor cell lists method provides certain ability that signaling is controlled and Target cell switches for the network operator, can avoid the burden of performance of handoffs reduction, signaling consumption and terminal to a certain extent.
If be used for switching, then can make the needed handover measurement time decreased of terminal, the surveying work amount reduces, and handover delay descends so switch cutting off rate also with regard to corresponding minimizing thereupon.In addition, owing to need the neighbor cell decreased number of monitoring, thereby also reduced the Signalling exchange between terminal, base station and the radio network controller accordingly, shortened the time that terminal is measured, alleviated the load of network.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (10)
1. the cell filtering method of a cellular communication system is characterized in that:
Described communication system comprises subscriber equipment and plurality of base station devices, and base station equipment comprises macro base station, little base station, Home eNodeB;
Set up neighbor cell lists in macro base station and in the Home eNodeB, this tabulation comprises neighbours' the macro base station and the neighbor cell message of Home eNodeB;
Comprise following attribute in the neighbor cell lists: the tracking cell ID of neighbor cell message, sub-district, and the sub-district whether privately owned, whether changeable, whether X2 interface arranged;
The neighbor cell message of described macro base station comprises home base station cells information in adjacent macro base station and the coverage;
The neighbor cell message of described Home eNodeB comprises adjacent home base station cells information and Home eNodeB place macro base station cell information;
This method comprises filtration step: fall to be not suitable for the cell information that counterpart terminal inserts according to the information filtering of described neighbor cell lists;
The neighbor-cell-list filtering method flow process is as follows:
Macro base station/Home eNodeB at first selects the purpose identical with the tracking cell ID of terminal to follow the tracks of the cell ID inlet in neighbor cell lists, then by whether privately owned in the neighbor cell lists and can switch attribute and terminal in the closed CSG neighbor cell lists that can authenticate access preserved, the neighbor cell lists that this purpose is followed the tracks of in cell ID TTAI zone filters;
At first filter out and have in Private and the terminal the not closed contracted user group CSG sub-district of this sub-district ID in the neighbor cell lists, filter then to have and to be switched or the sub-district of gravity treatment No HO indication, produce neighbor cell lists, make and have only suitable neighbor cell message to be retained in the neighbor cell lists through filtering; Make terminal need not measure limiting terminal access into closed formula sub-district and overburden sub-district and report to network.
2. the cell filtering method of cellular communication system according to claim 1 is characterized in that:
When in mobile communication system, carrying out direct-cut operation or sub-district gravity treatment, the macro base station at terminal place and Home eNodeB will be reported neighbor cell lists to terminal, and described neighbor cell lists falls to be not suitable for the cell information that counterpart terminal inserts according to the information filtering of described neighbor cell lists.
3. the cell filtering method of cellular communication system according to claim 1 and 2 is characterized in that:
Described filtration step comprises: follow the tracks of cell filtering, access permission filtration, switch the permission filtration.
4. the cell filtering method of cellular communication system according to claim 3 is characterized in that:
Described tracking cell filtering comprises, described tracking cell filtering is followed the tracks of cell ID by described terminal place, carry out filtration treatment, to produce the neighbor cell lists of following the tracks of cell filtering, make that the tracing area that is included in the neighbor cell place in the described neighbor cell lists is the tracing area at terminal place.
5. the cell filtering method of cellular communication system according to claim 4 is characterized in that:
Described tracking sub-district comprises that macro base station is followed the tracks of the sub-district and CSG follows the tracks of the sub-district, and according to setting regular division, name and assigned identification number, a CSG sub-district has one or more CSG to follow the tracks of the sub-district.
6. the cell filtering method of cellular communication system according to claim 3 is characterized in that:
Described access permission filters and comprises, described access permission filters the privately owned attribute of the neighbor cell in the neighbor cell lists that filters by described switching permission, filtration treatment is carried out in the sub-district that will have privately owned sign, insert the neighbor cell lists that filters to produce, make that the neighbor cell in the neighbor cell lists of place is the sub-district that common cell and authorization terminal insert.
7. the cell filtering method of cellular communication system according to claim 6 is characterized in that:
Filtration treatment is carried out in the sub-district that will have privately owned sign, comprises that the CSG cell filtering of this sub-district ID falls with having in privately owned sign and the terminal not.
8. the cell filtering method of cellular communication system according to claim 7 is characterized in that:
Sub-district ID comprises in the described terminal, the privately owned CSG sub-district ID that can authenticate access that preserves in the terminal equipment.
9. the cell filtering method of cellular communication system according to claim 3 is characterized in that:
Described switching permission is filtered and is comprised, switch filtering is by the switch attribute of the neighbor cell in the neighbor cell lists of described tracking cell filtering, filtration treatment is carried out in the sub-district that will have No HO sign, do not have No HO sign to produce the neighbor cell lists of switch filtering, to make the neighbor cell that is included in the described neighbor cell lists;
Wherein said No HO is masked as " can not be switched or gravity treatment " sign.
10. cellular communication system, it is characterized in that: comprise subscriber equipment and plurality of base station devices, base station equipment comprises macro base station, little base station, Home eNodeB;
Described communication system comprises subscriber equipment and plurality of base station devices, and base station equipment comprises macro base station, little base station, Home eNodeB;
Set up neighbor cell lists in macro base station and in the Home eNodeB, this tabulation comprises neighbours' the macro base station and the neighbor cell message of Home eNodeB;
Comprise following attribute in the neighbor cell lists: the tracking cell ID of neighbor cell message, sub-district, and the sub-district whether privately owned, whether changeable, whether X2 interface arranged;
The neighbor cell message of described macro base station comprises home base station cells information in adjacent macro base station and the coverage;
The neighbor cell message of described Home eNodeB comprises adjacent home base station cells information and Home eNodeB place macro base station cell information;
The cell filtering method of this system comprises filtration step: fall to be not suitable for the cell information that counterpart terminal inserts according to the information filtering of described neighbor cell lists;
The neighbor-cell-list filtering method flow process is as follows:
Macro base station/Home eNodeB at first selects the purpose identical with the tracking cell ID of terminal to follow the tracks of the cell ID inlet in neighbor cell lists, then by whether privately owned in the neighbor cell lists and can switch attribute and terminal in the closed CSG neighbor cell lists that can authenticate access preserved, the neighbor cell lists that this purpose is followed the tracks of in cell ID TTAI zone filters;
At first filter out and have in Private and the terminal the not closed contracted user group CSG sub-district of this sub-district ID in the neighbor cell lists, filter then to have and to be switched or the sub-district of gravity treatment No HO indication, produce neighbor cell lists, make and have only suitable neighbor cell message to be retained in the neighbor cell lists through filtering; Make terminal need not measure limiting terminal access into closed formula sub-district and overburden sub-district and report to network.
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| EP3190833A1 (en) * | 2016-01-11 | 2017-07-12 | Gemalto M2M GmbH | Method for cell reselection of a wireless communication device |
| CN113923789B (en) * | 2020-07-10 | 2023-08-18 | 中国移动通信集团浙江有限公司 | LTE carrier scheduling device and method |
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2009
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