CN102958077A - Maintaining method for neighbor relation table of same system - Google Patents
Maintaining method for neighbor relation table of same system Download PDFInfo
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- CN102958077A CN102958077A CN2011102547175A CN201110254717A CN102958077A CN 102958077 A CN102958077 A CN 102958077A CN 2011102547175 A CN2011102547175 A CN 2011102547175A CN 201110254717 A CN201110254717 A CN 201110254717A CN 102958077 A CN102958077 A CN 102958077A
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Abstract
The invention provides a maintaining method for a neighbor relation table of a same system. The maintaining method is characterized by configuring neighbor signal quality information, jump information, load information and switching information as attribute information needing to be maintained of the neighbor relation table during every neighbor relation statistics period. The maintaining method provided by the invention can be used for making a quick decision by directly utilizing the corresponding attribute information of the neighbor relation table in concrete implementation of an RRM (Radio Resource Management) function.
Description
Technical field
The present invention relates to the resource management techniques in the mobile communication system, particularly relate to a kind of maintaining method of homologous ray neighborhood region correlation chart.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) in the standard formulation process, 21 to 25 April in 2008,3GPP normal structure SA5 working group holds the SA5#59 meeting in Chengdu, determine to set up the sub-working group of self-optimizing network (SON), SON issues associated (comprising automatically discovery of base station eNB, Auto-mounting, automatically configuration, Automatic Optimal and automatic recovery etc.) is discussed specially.SON has four large functions: self-configuring, self-optimizing, selfreparing, self planning.Wherein in self-configuration function, introduced Automatic Neighboring Relation management function (Automatic Neighbour Relation, ANR).
The core of ANR function is that eNode B is to the management of neighborhood region correlation chart (NRT).It is by adjacent area delete function, adjacent area measuring ability and O﹠amp; M renewal neighboring BS information function is finished.Wherein, the adjacent area measuring ability mainly depends on measurement function and the X2 config update is finished, and the adjacent area delete function mainly relies on internal information and the X2 config update is finished.Carry out safeguarding (comprise and increasing and the deletion neighboring BS relationship) of local area neighbor cell relation according to the concrete real-time condition of network, and then support for follow-up user's migration, load balancing, switching etc. provide to input.ANR function treatment main process may further comprise the steps:
Step 103, adjacent area decision-making: then certain eNodeB finally puts into this residential quarter neighbor cell relation table according to the adjacent area selection algorithm of oneself according to the adjacent area of detecting;
Step 104, neighboring BS relationship upgrade: according to the adjacent area, residential quarter that the upper step obtains, carry out the renewal (increasing and or deletion) of local neighborhood tabulation.
Step 105, generation neighborhood region correlation chart: form real-time neighborhood region correlation chart NRT (Neighbour Relation Table neighborhood table).
The neighboring BS relationship sheet form of safeguarding in the SON self-optimizing process at present is as shown in table 1:
Table 1
The concrete meaning of the attribute information of adjacent area is as follows in the above-mentioned table 1:
-No Remove: if configured inspection, eNB can not delete this adjacent area from neighborhood region correlation chart so;
-No HO: if configured inspection, eNB can not use this adjacent area when switching (HO) so;
-No X2: if configured inspection, eNB can not use the X2 interface of this adjacent area so;
According to above description, as can be known in ANR, the adjacent area selects (comprise adjacent area decision-making, adjacent area renewal, generate neighborhood region correlation chart) very large to performance and the capacity impact of network system, and then rationally the NRT of science safeguard can be easily for other processes (such as switching and load balancing etc.) provide relevant information, so the maintenance algorithm quality that NRT shows can affect the performance of network.
From above-mentioned table 1, can find out, present less No Remove, No HO, three attributes of No X2 of only having comprised of NRT (neighborhood region correlation chart) attribute of ANR fuction output, the RRM RRM function in the homologous ray network (such as the selection of the Target cell that switches, load balancing etc.) then can't utilize this neighborhood region correlation chart to realize.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of maintaining method of homologous ray neighborhood region correlation chart, and the method is conducive to realize the RRM RRM function of homologous ray residential quarter.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of maintaining method of homologous ray neighborhood region correlation chart, the method may further comprise the steps:
A, in current neighboring BS relationship measurement period, signal quality information and the saltus step information of each adjacent area that described nearby region measurement report is corresponding is determined according to the report of the nearby region measurement of each reported by user equipment UE in this cycle in the base station; According to the resource status updating message that receives in this cycle, determine the load information of each adjacent area that described updating message is corresponding; According to the handover report message that receives in this cycle, determine the handover information of each adjacent area that described handover report message is corresponding; Described adjacent area saltus step information is used to indicate the stability that interior adjacent area of this cycle is in existence; Described handover information is used to indicate this residential quarter to the handover success rate of adjacent area;
B, according to the described signal quality information that obtains in the current neighboring BS relationship measurement period, described saltus step information, described load information and described handover information, upgrade the respective attributes information in the neighborhood region correlation chart of the current maintenance in described base station.
In sum, the maintaining method of the homologous ray neighborhood region correlation chart that the present invention proposes, by signal quality information, saltus step information, load information and the handover information at each neighboring BS relationship measurement period configuring adjacent cell, the attribute information that need to safeguard as neighborhood region correlation chart, thereby be conducive to when specific implementation RRM function, directly utilize the respective attributes information in the neighborhood region correlation chart to carry out high-speed decision.
Description of drawings
Fig. 1 is the schematic flow sheet of the embodiment of the invention one.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Core concept of the present invention is, maintaining method to the neighborhood region correlation chart in the existing ANR process improves, at each Neighboring Cell List maintenance period, on the existing attribute information basis, adjacent area that needs to safeguard, increase measurement and the maintenance of new adjacent area attribute information, this new adjacent area attribute information will be conducive to realize the RRM RRM function of homologous ray residential quarter.Like this, by in neighborhood region correlation chart, increasing the attribute information that is conducive to realize the RRM function, be conducive to when specific implementation RRM function, directly utilize the respective attributes information in the neighborhood region correlation chart to carry out high-speed decision.
Fig. 1 is the schematic flow sheet of the embodiment of the invention one, and as shown in Figure 1, this embodiment may further comprise the steps:
Here, the concrete setting of described neighboring BS relationship measurement period can adopt the method consistent with existing system to realize, does not repeat them here.
The signal quality information of described adjacent area is for the wireless signal strength of weighing the adjacent area.The UE measurement report that eNodeB comes up according to configuration, feedback can obtain the signal quality of each adjacent area; Can learn according to this wireless signal strength situation of adjacent area.
Particularly, can be according to I
Nei_Quality=1/RSRP
Nei_cell, determine the signal quality information I of described each adjacent area
Nei_Quality, wherein, RSRP
Nei_cellThe mean value of the received signal code power of this adjacent area of carrying in the nearby region measurement report that reports for described UE in this cycle.Here, I
Nei_QualityLittlely illustrate that then the signal quality of this adjacent area is better.
Described adjacent area saltus step information is used to indicate the stability that interior adjacent area of this cycle is in existence; The UE measurement report that eNodeB comes up according to configuration, feedback can obtain existence and the disappearance number of times information of each adjacent area.Can obtain according to this activation of adjacent area and the information such as saltus step of unactivated state.
Particularly, can be according to I
Nei_Exist=1/Counter
Nei_cell, determine the saltus step information I of described each adjacent area
Nei_Exist, wherein, Counter
Nei_cellFor there is and does not exist the number of times sum of moving between two states in this adjacent area in this cycle.Here, I
Nei_ExistIllustrate that then this adjacent area state is more stable greatlyr.
The load information of described adjacent area (is designated as I
Nei_Load), for the loading condition of weighing the adjacent area.ENodeB upgrades the related load information (Hardware Load Indicator (hardware load indication), S 1TNL Load Indicator (indication of S1 interface load), Radio Resource Status (Radio Resource state), Composite Available Capacity Group (comprehensively available capability is indicated)) of the neighbor cell that (RESOURCE STATUS UPDATE) message obtains by resource status according to adjacent (X2 interface is arranged) eNodeB, can obtain according to this loading condition of adjacent area.
Particularly, can be according to L
Nei_Loadd=Load Indicator+DL Total PRB usage+UL Total PRB usage determines the load information I of described each adjacent area
Nei_LoadWherein, Load Indicator is the accumulated value of the load instruction information in the resource status updating message of this adjacent area of receiving in this cycle, DL Total PRB usage is the mean value of the downlink resource utilance in the resource status updating message of this adjacent area of receiving in this cycle, and UL Total PRB usage is the mean value of the ascending resource utilance in the resource status updating message of this adjacent area of receiving in this cycle.Here, I
Nei_LoadIllustrate that then the load of this adjacent area is large greatlyr, otherwise then load is little.Therefore in using, RRM can select I
Nei_LoadLittle adjacent area is as the purpose residential quarter of switching.
The handover information of described adjacent area (is designated as I
Nei_Ho) be used to indicate the handover success rate situation of adjacent area.The relevant handoff failure information of the neighbor cell that eNodeB obtains by handover report (HANDOVER REPORT) message according to adjacent (X2 interface is arranged) eNodeB and the relevant switching statistical information of this eNodeB oneself obtain this handover information.
Particularly, can be according to I
Nei_Ho=1/Counter
Failure cellECGI+ 1/Counter
Re-establishm ent cellECGI+ 1/Counter
Ho-FailCnt, determine the handover information I of described each adjacent area
Nei_Ho, wherein, Counter
Fallurecell ECGIFor in the handover report message that receives in this cycle about user's handoff failure number of times Counter of this adjacent area
Failure cellECGIAccumulated value, Counter
Re-establishment cellECGIFor in the handover report message that receives in this cycle about the user radio bearer reconstruction failure number of times Counter of this adjacent area
Re-establishment cellECGIAccumulated value, Counter
Ho-FailCntBe the handoff failure number of times of purpose residential quarter in this cycle that counts on for described base station take this adjacent area.Here, I
Nei_HoThe handover success rate of this residential quarter of less explanation is less, otherwise larger, like this, can select I in RRM uses
Nei_LoadLarge adjacent area is as the purpose residential quarter of switching.
The described signal quality information that obtains in the current neighboring BS relationship measurement period of step 102, described saltus step information, described load information and described handover information upgrade the respective attributes information in the neighborhood region correlation chart of the current maintenance in described base station.
Described renewal in this step is specifically as follows:
For each described signal quality information, described saltus step information, described load information and described handover information, if adjacent area corresponding to this information has been present in the current neighborhood region correlation chart, then the respective attributes information of the adjacent area that this information in the current neighborhood region correlation chart is corresponding replaces with this information, otherwise, in current neighborhood region correlation chart, increase the list item of adjacent area corresponding to this information, and this information is increased in the respective attributes information of this list item.
Preferably, if in the system number of adjacent area in the neighborhood region correlation chart limited, then preferably, also need after the step 102 the adjacent area number in the neighborhood region correlation chart after upgrading is safeguarded, namely delete the adjacent area list item of some, to satisfy the above-mentioned requirements of system.Particularly, can delete I
Nei_ExistThe adjacent area that value is minimum is because this adjacent area state (whether existing) is least stablized or deleted I
Nei_LoadMaximum adjacent area because this adjacent area load is overweight, is not suitable for being follow-up user and moves into or switch the purpose residential quarter.Concrete grammar is as follows:
When the adjacent area in the neighborhood region correlation chart after the described renewal is counted n greater than default adjacent area number max-thresholds N, the list item of the adjacent area of n-N described adjacent area saltus step information minimum of deletion the neighborhood region correlation chart after upgrading.
Perhaps, when the adjacent area in the neighborhood region correlation chart after the described renewal is counted n greater than default adjacent area number max-thresholds N, the list item of the adjacent area of n-N described load information maximum of deletion the neighborhood region correlation chart after upgrading.
Here need to prove, be not limited in actual applications said method, adjacent area list item that can also be unnecessary according to other information deletions does not repeat them here.
Utilize technique scheme, can in neighborhood region correlation chart, safeguard the described signal quality information of adjacent area, described saltus step information, described load information and described handover information.Like this, when follow-up switching or load balancing user move etc., can preferentially select the purpose residential quarter according to required metric.Such as: when selecting to switch the purpose residential quarter, can be with reference to I
Nei_Ho, adjacent area I
Nei_HoLarger residential quarter is preferential as switching the purpose residential quarter; Same, when the user load equilibrium needs migrated users, adjacent area I
Nei_LoadLess residential quarter is preferentially as the move target residential quarter.
By technique scheme, advantage of the present invention may be summarized as follows:
1, more comprehensive index and the attribute of homologous ray residential quarter have been considered;
2, the neighborhood region correlation chart safeguarded of the present invention can other of homologous ray residential quarter such as the RRM function in the use of direct convenience;
3, the neighborhood region correlation chart safeguarded of the present invention science and comprehensively more can be reacted real-time performance and the state of the network of homologous ray residential quarter more really.
4, neighboring BS relationship listing maintenance favorable expandability of the present invention.Such as can be according to separately needs increase/delete property etc.
5, compatible good with existing protocol.Message involved in the present invention is message in the existing protocol, need not to increase special agreement or message process.
In sum, above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the maintaining method of a homologous ray neighborhood region correlation chart is characterized in that, the method may further comprise the steps:
A, in current neighboring BS relationship measurement period, signal quality information and the saltus step information of each adjacent area that described nearby region measurement report is corresponding is determined according to the report of the nearby region measurement of each reported by user equipment UE in this cycle in the base station; According to the resource status updating message that receives in this cycle, determine the load information of each adjacent area that described updating message is corresponding; According to the handover report message that receives in this cycle, determine the handover information of each adjacent area that described handover report message is corresponding; Described adjacent area saltus step information is used to indicate the stability that interior adjacent area of this cycle is in existence; Described handover information is used to indicate the handover success rate of adjacent area;
B, according to the described signal quality information that obtains in the current neighboring BS relationship measurement period, described saltus step information, described load information and described handover information, upgrade the respective attributes information in the neighborhood region correlation chart of the current maintenance in described base station.
2. method according to claim 1 is characterized in that, among the step a according to I
Nei_Quality=1/RSRP
Nei_cell, determine the signal quality information I of described each adjacent area
Nei_Quality, wherein, RSRP
Nei_cellThe mean value of the received signal code power of this adjacent area of carrying in the nearby region measurement report that reports for described UE in this cycle.
3. method according to claim 1 is characterized in that, among the step a according to I
Nei_Exist=1/Counter
Nei_cell, determine the saltus step information I of described each adjacent area
Nei_Exist, wherein, Counter
Nei_cellFor there is and does not exist the number of times sum of moving between two states in this adjacent area in this cycle.
4. method according to claim 1 is characterized in that, among the step a according to I
Nei_Load=Load Indicator+DL Total PRB usage+UL Total PRB usage determines the load information I of described each adjacent area
Nei_LoadWherein, Load Indicator is the accumulated value of the load instruction information in the resource status updating message of this adjacent area of receiving in this cycle, DL Total PRB usage is the mean value of the downlink resource utilance in the resource status updating message of this adjacent area of receiving in this cycle, and UL Total PRB usage is the mean value of the ascending resource utilance in the resource status updating message of this adjacent area of receiving in this cycle.
5. method according to claim 1 is characterized in that, among the step a according to I
Nei_Ho=1/Counter
FailurecellECGI+ 1/Connter
Re-establishment cellECGI+ 1/Counter
Ho-FailCnt, determine the handover information I of described each adjacent area
Nei_Ho, wherein, Counter
FailurecellECGIFor in the handover report message that receives in this cycle about user's handoff failure number of times Counter of this adjacent area
FailurecellECGIAccumulated value, Counter
Re-establishmentcelECGIFor in the handover report message that receives in this cycle about the user radio bearer reconstruction failure number of times Counter of this adjacent area
Re-establishmentcellECGIAccumulated value, Counter
Ho-FailCntBe the handoff failure number of times of purpose residential quarter in this cycle that counts on for described base station take this adjacent area.
6. method according to claim 1 is characterized in that, described being updated among the step b:
For each described signal quality information, described saltus step information, described load information and described handover information, if adjacent area corresponding to this information has been present in the current neighborhood region correlation chart, then the respective attributes information of the adjacent area that this information in the current neighborhood region correlation chart is corresponding replaces with this information, otherwise, in current neighborhood region correlation chart, increase the list item of adjacent area corresponding to this information, and this information is increased in the respective attributes information of this list item.
7. method according to claim 1, it is characterized in that, further comprise after the step b: when the adjacent area in the neighborhood region correlation chart after the described renewal is counted n greater than default adjacent area number max-thresholds N, the list item of the adjacent area of n-N described adjacent area saltus step information minimum of deletion the neighborhood region correlation chart after upgrading.
8. method according to claim 1, it is characterized in that, further comprise after the step b: when the adjacent area in the neighborhood region correlation chart after the described renewal is counted n greater than default adjacent area number max-thresholds N, the list item of the adjacent area of n-N described load information maximum of deletion the neighborhood region correlation chart after upgrading.
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Cited By (1)
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|---|---|---|---|---|
| CN103369572A (en) * | 2013-07-26 | 2013-10-23 | 厦门大学 | Load-based automatic neighbor relation (ANR) optimizing method in long-term evolution system |
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| CN101668307A (en) * | 2008-09-02 | 2010-03-10 | 华为技术有限公司 | Method, system and equipment for communication |
| CN101742612A (en) * | 2008-11-19 | 2010-06-16 | 华为技术有限公司 | Method, device and evolution base station for saving adjacent cell relation information |
| CN101772097A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Method and system for allocating physical cell identifiers |
| CN101959222A (en) * | 2009-07-13 | 2011-01-26 | 中兴通讯股份有限公司 | Method and system for self-optimizing wireless communication network neighbor list |
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Patent Citations (5)
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| US20040170179A1 (en) * | 2003-02-27 | 2004-09-02 | Klas Johansson | Radio resource management with adaptive congestion control |
| CN101668307A (en) * | 2008-09-02 | 2010-03-10 | 华为技术有限公司 | Method, system and equipment for communication |
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| CN103369572A (en) * | 2013-07-26 | 2013-10-23 | 厦门大学 | Load-based automatic neighbor relation (ANR) optimizing method in long-term evolution system |
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