CN104219707B - A kind of methods, devices and systems for obtaining handover between cells parameter - Google Patents

A kind of methods, devices and systems for obtaining handover between cells parameter Download PDF

Info

Publication number
CN104219707B
CN104219707B CN201310206849.XA CN201310206849A CN104219707B CN 104219707 B CN104219707 B CN 104219707B CN 201310206849 A CN201310206849 A CN 201310206849A CN 104219707 B CN104219707 B CN 104219707B
Authority
CN
China
Prior art keywords
cell
ij
handover
difference
received signal
Prior art date
Application number
CN201310206849.XA
Other languages
Chinese (zh)
Other versions
CN104219707A (en
Inventor
梁双春
秦博
方媛
霍筱宁
袁静
陈彦名
成梦虹
胡亚希
段伟希
罗枫
马智
詹义
吕良栋
刘佳
孙超
陈光宇
李端
罗建迪
李健
Original Assignee
中国移动通信集团设计院有限公司
中国移动通信集团公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国移动通信集团设计院有限公司, 中国移动通信集团公司 filed Critical 中国移动通信集团设计院有限公司
Priority to CN201310206849.XA priority Critical patent/CN104219707B/en
Publication of CN104219707A publication Critical patent/CN104219707A/en
Application granted granted Critical
Publication of CN104219707B publication Critical patent/CN104219707B/en

Links

Abstract

The method of handover between cells parameter, apparatus and system are obtained the invention discloses a kind of, the problem of to solve that cell overall network capacity in blocks can not be optimized in a short time using manual type in the prior art.In the process, the wireless measurement for the received signal strength that the user terminal of each cell is reported is reported in acquisition cell in blocks;Determine the difference of serving cell received signal strength and the received signal strength of each adjacent cell in the measurement report;Further obtain being switched to the telephone traffic of adjacent cell with the function of handover between cells Parameters variation from serving cell;The handover between cells parameter for determining to make the telephone traffic summation that each cell is accessed in cell in blocks maximum by objective optimization algorithm;According to each handover between cells parameter of cell in blocks described in identified handover between cells parameter setting.

Description

A kind of methods, devices and systems for obtaining handover between cells parameter

Technical field

The present invention relates to wireless communication field, more particularly to a kind of method for obtaining handover between cells parameter, device and it is System.

Background technology

The parameter such as Downtilt and handoff threshold is adjusted, is the conventional means of cell capacity optimization.But at present manually Mode carry out network capacity optimization method generally to finite number cell (for example:2-3) carry out parameter adjustment, it is impossible to ensure The overall network capacity of cell in blocks is optimal, wherein, although cell in blocks is multiple cells or geography adjacent on geographical position It is non-conterminous on position, but it is mutually arranged multiple cells for adjacent area.If carrying out capacity optimization to cell in blocks, it is related to cell The factors such as capacity resource, manual type adjusting parameter would become hard to reach the effect of optimization, even and if have improvement, also it is generally with net Network parameter adjustment experience, by repeatedly trial, can be only achieved certain effect.Existing network capacity optimization method, exist with Lower shortcoming:

1) network capacity issues are analyzed due to needing manually, optimizes configuration, the usual energy of network optimization engineer It is limited, improve the substantial amounts of manpower and materials that the quality of whole network needs to put into a short time.

2) network optimization personnel can only be positioned and be adjusted to capacity problem to cell one by one, it is possible that turning round and look at This loses that situation, it is impossible to ensure that cell in blocks reaches the effect of total optimization.

The content of the invention

It is existing to solve the embodiments of the invention provide a kind of method for obtaining handover between cells parameter, apparatus and system There is the problem of can not optimizing cell overall network capacity in blocks in a short time using manual type in technology.

A kind of method for obtaining handover between cells parameter provided in an embodiment of the present invention, including:

Obtain the wireless measurement report for the received signal strength that the user terminal of each cell in cell in blocks is reported;

For each acquired measurement report, determine in the measurement report serving cell received signal strength with it is every The difference of the received signal strength of individual adjacent cell;

The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in the cell in blocks, In default measurement period, the number of times that each difference occurs, setting difference maximum SSDIFF are countedijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo the difference maximum SSDIFFijmaxInterval in each difference occur Number of times sum is accounted for from the difference minimum value SSDIFFijminTo the difference maximum SSDIFFijmaxInterval in each difference go out The ratio of existing number of times sum, obtains the ratio with the specified difference SSDIFFijThe first function Q of changeij (SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is the number of cell in the cell in blocks;

Obtained accounting in cell i if application access from the telephone traffic that cell i is switched to cell j according to the first function Ratio retinue's cell i of business amount is switched to the second function of cell j handover between cells Parameters variation;

It is configured to obtain the object function of handover between cells parameter, sets the constraints of optimized algorithm, Each handover between cells parameter in the cell in blocks is determined, wherein the object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from Cell i is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;

According to the handover between cells parameter of each minizone in cell in blocks described in the handover between cells parameter setting of determination.

A kind of device for obtaining handover between cells parameter provided in an embodiment of the present invention, including:

Acquiring unit, the wireless survey for obtaining the received signal strength that the user terminal of each cell in cell in blocks is reported Amount report;

First determining unit, for each reported for each user terminal in the acquired cell in blocks Measurement report, determines the difference of serving cell received signal strength and the received signal strength of each adjacent cell in the measurement report Value;

Second determining unit, is switched to cell j's for being configured with for every a pair in the cell in blocks from cell i The cell of neighboring BS relationship, in default measurement period, counts the number of times that each difference occurs, sets difference maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo the difference maximum SSDIFFijmaxInterval in the number of times sum that occurs of each difference account for from the difference minimum value SSDIFFijminTo the difference most Big value SSDIFFijmaxInterval in the ratio of number of times sum that occurs of each difference, obtain the ratio with the specified difference SSDIFFijThe first function Q of changeij(SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is small in the cell in blocks The number in area;

3rd determining unit, for determining that the telephone traffic for being switched to cell j from cell i is accounted for small according to the first function Ratio retinue's cell i of the telephone traffic of application access is switched to the second letter of cell j handover between cells Parameters variation in area i Number;

Processing unit, for constructing the object function for being used for obtaining handover between cells parameter, setting optimization is calculated The constraints of method, determines each handover between cells parameter in the cell in blocks, wherein the object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from small Area i is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;

Setting unit, for each of cell in flakes described in the handover between cells parameter setting that is determined according to the processing unit The handover between cells parameter of minizone.

A kind of system for obtaining handover between cells parameter provided in an embodiment of the present invention, including:

Network side equipment, for obtaining the wireless of the received signal strength that the user terminal of each cell in cell in blocks is reported Measurement report;For each acquired measurement report, determine in the measurement report serving cell received signal strength with The difference of the received signal strength of each adjacent cell;It is configured with from cell i and is switched to for every a pair in the cell in blocks The cell of cell j neighboring BS relationship, in default measurement period, counts the number of times that each difference occurs, sets difference maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo the difference maximum SSDIFFijmaxInterval in the number of times sum that occurs of each difference account for from the difference minimum value SSDIFFijminTo the difference most Big value SSDIFFijmaxInterval in the ratio of number of times sum that occurs of each difference, obtain the ratio with the specified difference SSDIFFijThe first function Q of changeij(SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is small in the cell in blocks The number in area;Obtained accounting for the application access in cell i from the telephone traffic that cell i is switched to cell j according to the first function Ratio retinue's cell i of telephone traffic is switched to the second function of cell j handover between cells Parameters variation;It is configured to obtain small The object function of interval handoff parameter, sets the constraints of optimized algorithm, determines each handover between cells in the cell in blocks Parameter, wherein the object function includes:Wherein, max { } represents to make greatly Value in bracket { } is maximum, GijTo be switched to cell j telephone traffic, S from cell iiDo not occur for the application access in cell i and The telephone traffic of switching;According to the handover between cells ginseng of each minizone in cell in blocks described in the handover between cells parameter setting of determination Number.

User terminal, for reporting wireless measurement to report to the network side equipment.

The embodiments of the invention provide a kind of method for obtaining handover between cells parameter, apparatus and system, by obtaining in real time The wireless measurement report that the user terminal of cell in blocks is reported is taken, the application access words that handover between cells telephone traffic accounts for cell are obtained The ratio of business amount utilizes the object function and constraint bar of the construction of function optimized algorithm with the function of handover between cells Parameters variation Part, it is determined that in flakes in cell each cell handover between cells parameter so that the telephone traffic summation of each cell is maximum in cell in blocks. Compared with the method that existing manual type carries out network capacity optimization, due to collecting measurement report, statistics automatically using system Analysis, adjust automatically handover between cells parameter carries out network capacity optimization, therefore more time saving and energy saving, and reaches real-time optimization net The purpose of network;As a result of objective optimization, optimization method is more scientific, and optimum results are more accurate;Due to being examined in optimization process Consider the handover between cells parameter of each cell of cell in blocks, and the target optimized is that the application for making each cell of cell in blocks is accessed Telephone traffic summation it is maximum, therefore the overall telephone traffics of all cells in cell in blocks can be taken into account.

Brief description of the drawings

Fig. 1 shows the schematic diagram of the procedure of acquisition handover between cells parameter provided in an embodiment of the present invention;

Fig. 2 shows the schematic diagram of the apparatus structure of acquisition handover between cells parameter provided in an embodiment of the present invention;

Fig. 3 shows the schematic diagram of acquisition handover between cells parameter system provided in an embodiment of the present invention.

Embodiment

The embodiments of the invention provide a kind of method for obtaining handover between cells parameter, apparatus and system.Of the invention real In the method for acquisition handover between cells parameter that example offer is provided, the reception that the user terminal of each cell in cell in blocks is reported is obtained The wireless measurement report of signal intensity, for each acquired measurement report, determines that serving cell is received in measurement report Signal intensity and the difference of the received signal strength of each adjacent cell;It is configured with for every a pair in cell in blocks from cell i The cell of cell j neighboring BS relationship is switched to, in default measurement period, the number of times that each difference occurs is counted, sets difference Maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo difference maximum SSDIFFijmaxInterval in the number of times sum that occurs of each difference account for from difference minimum value SSDIFFijminTo difference maximum SSDIFFijmaxInterval in the ratio of number of times sum that occurs of each difference, obtain ratio with specified difference SSDIFFijChange First function Qij(SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is the number of cell in cell in blocks;According to first Function obtains accounting for the ratio retinue's cell i for the telephone traffic for applying for access in cell i from the telephone traffic that cell i is switched to cell j It is switched to the second function of cell j handover between cells Parameters variation;It is configured to obtain the target letter of handover between cells parameter Number, sets the constraints of optimized algorithm, it is determined that each handover between cells parameter in cell in flakes, wherein object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from cell i It is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;According to the cell of determination Between handoff parameter the handover between cells parameter of each minizone in cell in blocks is set.

The applicable communication standard of embodiments of the invention includes but is not limited to:Global system for mobile communications (Global System of Mobile communication, GSM), CDMA (Code Division Multiple Access, CDMA) IS-95, CDMA (Code Division Multiple Access, CDMA) 2000, TD SDMA (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA), wideband code division are more Location (Wideband Code Division Multiple Access, WCDMA), time division duplex-Long Term Evolution (Time Division Duplexing-Long Term Evolution, TDD-LTE), FDD-Long Term Evolution (Frequency Division Duplexing-Long Term Evolution, FDD-LTE), Long Term Evolution-enhancing (Long Term Evolution-Advanced, LTE-advanced) etc..

Fig. 1 shows the schematic diagram of the procedure of acquisition handover between cells parameter provided in an embodiment of the present invention, the mistake Journey specifically includes following steps:

S101:Obtain the wireless measurement report for the received signal strength that the user terminal of each cell in cell in blocks is reported;

S102:For each acquired measurement report, determine in measurement report serving cell received signal strength with The difference of the received signal strength of each adjacent cell;

S103:The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in cell in blocks, In default measurement period, the number of times that each difference occurs, setting difference maximum SSDIFF are countedijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo difference maximum SSDIFFijmaxInterval in the number of times that occurs of each difference Sum is accounted for from difference minimum value SSDIFFijminTo difference maximum SSDIFFijmaxInterval in the number of times sum that occurs of each difference Ratio, obtain the ratio with specified difference SSDIFFijThe first function Q of changeij(SSDIFFij), wherein i, j=1..N, i It is not equal to j, N is the number of cell in cell in blocks;

S104:Obtained accounting for the application access in cell i from the telephone traffic that cell i is switched to cell j according to first function Ratio retinue's cell i of telephone traffic is switched to the second function of cell j handover between cells Parameters variation;

S105:It is configured to obtain the object function of handover between cells parameter, sets the constraints of optimized algorithm, it is determined that Each handover between cells parameter in cell in blocks.

S106:According to each handover between cells parameter of handover between cells parameter setting cell in blocks of determination.

Wherein, in S101 steps, the received signal strength that the user terminal of each cell is reported in acquisition cell in blocks Wireless measurement is reported.

In embodiments of the present invention, cell in blocks is multiple cells adjacent on geographic area;Although or geographic area It is upper non-conterminous, but it is configured to multiple cells of adjacent area;Or both include adjacent multiple cells on geographic area, although also including It is non-conterminous on geographic area, but it is configured to multiple cells of adjacent area.

The wireless measurement report that user terminal is reported is that user terminal is issued according to wireless communication system network side apparatus Wireless measurement control command, is measured and reporting measurement reports to signal intensity, signal quality etc. according to control command, measurement Report includes measured value.Wireless measurement report reporting types include but is not limited to periodically report, event triggering report, week Phase property and event triggering mixing are reported, and in embodiments of the present invention, are entered so that the periodic measurement of received signal strength is reported as an example Row description, for different wireless communication systems, received signal strength has different definition, such as, for gsm system, receives Signal intensity can be such as the received signal level RXLEV defined in agreement 3GPP TS05.08 (V8.23.0) 8.1.4, its value Scope is as shown in table 1;For TD-SCDMA or WCDMA system, received signal strength can be such as agreement 3GPP TS25.123 9.1.1.1 Primary Common Control Physical Channel received signal code power (the Primary Common Control defined in Physical Channel Received Signal Code Power, P-CCPCH RSCP), its span such as institute of table 2 Show;For TDD-LTE system, received signal strength can be such as the reference signal defined in agreement 3GPP TS36.133 9.1.4 Receiving power (Reference Signal Receiving Power, RSRP), its span is as shown in table 3.Above-mentioned GSM, TD-SCDMA, WCDMA, TDD-LTE system are merely illustrative, are not construed as limiting the scope of the invention.

Report value Measurement data interval distribution (unit dBm) RXLEV0 <-110 RXLEV1 - 110~-109 RXLEV2 - 109~-108 RXLEV62 - 49~-48 RXLEV62 >-48

Table 1

Report value Measurement data interval distribution (unit dBm) P-CCPCH RSCP_LEV_00 P-CCPCH RSCP<-115 P-CCPCH RSCP_LEV_01 -115≤P-CCPCH RSCP<-114 P-CCPCH RSCP_LEV_02 -114≤P-CCPCH RSCP<-113 P-CCPCH RSCP_LEV_90 -26≤P-CCPCH RSCP<-25 P-CCPCH RSCP_LEV_91 -25≤P-CCPCH RSCP

Table 2

Report value Measurement data interval distribution (unit dBm) RSRP_LEV_00 RSRP<-140 RSRP_LEV_01 -140≤RSRP<-139 RSRP_LEV_02 -139≤RSRP<-138 RSRP_LEV_96 -45≤RSRP<-44 RSRP_LEV_97 -44≤RSRP

Table 3

In embodiments of the present invention, the report cycle of measurement report can according to the currently practical telephone traffic of network, network load, The requirement of network capacity optimization is configured, such as, for gsm system, can configure but be not limited to be configured to:120ms, 240ms, 480ms, 640ms, 1024ms, 2048ms, 5120ms, 10240ms, 1 minute, 6 minutes, 12 minutes, 30 minutes, 60 points Clock;For TD-SCDMA, WCDMA, it can configure but be not limited to be configured to:250ms, 500ms, 1000ms, 2000ms, 3000ms, 4000ms, 6000ms, 8000ms, 12000ms, 16000ms, 20000ms, 24000ms, 28000ms, 32000ms, 64000ms;For TDD-LTE system, it can configure but be not limited to be configured to:120ms, 240ms, 480ms, 640ms, 1024ms, 2048ms, 5120ms, 10240ms, 1 minute, 6 minutes, 12 minutes, 30 minutes, 60 minutes.

Wherein, in S102 steps, for each acquired measurement report, determine that serving cell connects in measurement report Receive signal intensity and the difference of the received signal strength of each adjacent cell;

Serving cell refers to that user terminal has the cell of dedicated wireless link in the cell, and adjacent cell is to be directed to service For cell, for each serving cell, multiple adjacent cells are configured with, usually, these adjacent cells are small with servicing Area is adjacent on geographical position, although or on geographical position it is non-conterminous, when the signal of the adjacent cell reaches serving cell, Signal intensity is sufficiently strong or signal quality is good enough, therefore is configured as the cell of adjacent cell.When user terminal is small from servicing Area to adjacent cell move when, its dedicated wireless link can be switched to the adjacent cell.

In an embodiment of the present invention, the service that the wireless measurement report that user terminal is reported is included received by it is small The received signal strength of each adjacent cell of area's received signal strength and the serving cell, in S102 steps, on user terminal The each wireless measurement report of report, calculates serving cell received signal strength and the serving cell in wireless measurement report The difference of each adjacent cell received signal strength.

Can be by operation maintenance center (Operation Maintenance Center-R, OMC-R), wireless network control Device (Radio Network Controller, RNC) or base station etc. obtain measurement report.

Wherein, in S103 steps, the neighbour that cell j is switched to from cell i is configured with for every a pair in cell in blocks The cell of cell relation, in default measurement period, counts the number of times that each difference occurs, setting difference maximum SSDIFFijmax With difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo difference maximum SSDIFFijmaxInterval in each difference The number of times sum that value occurs is accounted for from difference minimum value SSDIFFijminTo difference maximum SSDIFFijmaxInterval in each difference go out The ratio of existing number of times sum, obtains the ratio with specified difference SSDIFFijThe first function Q of changeij(SSDIFFij), wherein I, j=1..N, i are not equal to j, and N is the number of cell in cell in blocks;

A number of wireless measurement report can be obtained in default measurement period, in embodiments of the present invention, in advance If measurement period can according to the currently practical telephone traffic of network, network load, network capacity optimize requirement be configured, one As, default measurement period is longer, and the measurement report sample number of collection is more, and statistical result is more accurate, but will also result in simultaneously Network device processing load is aggravated, and the cycle of network capacity optimization is elongated, the problem of optimization efficiency is reduced.Actual optimization process In, above-mentioned factor can be considered measurement period is set, such as default measurement period can set but be not limited to be set to 5 points Clock, 10 minutes, 15 minutes etc..

Table 4, table 5, table 6 be respectively received signal strength be RXLEV, P-CCPCH RSCP, RSRP when, the embodiment of the present invention Middle serving cell received signal strength and the citing of adjacent cell received signal strength difference SSDIFF span.Believe when receiving When number intensity is RXLEV, SSDIFF is RELEV_DIFF, and when received signal strength is P-CCPCH RSCP, SSDIFF is RPSCP_DIFF, when received signal strength is RSRP, SSDIFF is RSRP_DIFF.

Actual SSDIFF reports the definition of value to be not limited to the mode in table 4, table 5, table 6, such as, in order to improve computing essence Degree, can set 100 and report value, and correspondingly sets and respectively report the reception signal of the corresponding serving cell of value and adjacent cell strong Spend difference (or difference range);In order to reduce computational complexity, it can also set 20 and report value.Report the setting of value and report value Corresponding relation with serving cell and the received signal strength difference (or difference range) of adjacent cell can be according to specific wireless network The combined factors such as situation, systematic function, user terminal performance are determined.Although the example provided in table 4, table 5, table 6, for difference The received signal strength of species, the span of its received signal strength difference is identical, but actually also can be different, according to realization It is fixed.

Report value Measurement data interval distribution (unit dB) RXLEV_DIFF0 <-24 RXLEV_DIFF1 -24 RXLEV_DIFF2 -23 RXLEV_SSDIFF48 23 RXLEV_SSDIFF49 24 RXLEV_SSDIFF50 >24

Table 4

Report value Measurement data interval distribution (unit dB) PRSCP_DIFF0 <-24 PRSCP_DIFF1 -24 PRSCP_DIFF2 -23 PRSCP_DIFF48 23 PRSCP_DIFF49 24 PRSCP_DIFF50 >24

Table 5

Report value Measurement data interval distribution (unit dB) RSRP_DIFF0 <-24 RSRP_DIFF1 -24 RSRP_DIFF2 -23 RSRP_DIFF48 23 RSRP_DIFF49 24 RSRP_DIFF50 >24

Table 6

In S103 steps, serving cell received signal strength in the measurement report obtained in S102 steps and The difference SSDIFF of each adjacent cell received signal strength, counts the number of times that each difference occurs.Such as:Serving cell receives signal Intensity and adjacent cell received signal strength difference are -24dB, occur in that 10 times in measurement period, then SSDIFF1=10.

It is assumed that there is N number of cell in cell in flakes, N is the integer more than 1, and cell i and cell j are two in cell in blocks Cell, and it is configured with the neighboring BS relationship that cell j is switched to from cell i, wherein i, j=1..N.Serving cell i receptions can be set Signal intensity and the difference minimum value of adjacent cell j received signal strengths are SSDIFFijmin, it is in the present embodiment SSDIFF0,<- 24dB;And the difference maximum of serving cell received signal strength and adjacent cell received signal strength is SSDIFFijmax, at this It is SSDIFF50 in embodiment,>24dB.Then according to identified serving cell i received signal strengths in step s 102 with The difference of adjacent cell j received signal strengths, counts the number of times that each difference occurs.Further according to this result, analysis is for specifying difference SSDIFFij, from SSDIFFijTo SSDIFFijmaxThe number of times sum that each difference occurs in interval accounts for SSDIFFijminArrive SSDIFFijmaxInterval in the ratio of number of times sum that occurs of each difference.For example, working as SSDIFFijDuring=- 15dB, from SSDIFFijTo SSDIFFijmaxEach difference occurrence number is accounted for from SSDIFF in intervalijminTo SSDIFFijmaxInterval in each difference The ratio of occurrence number sum is:(SSDIFF10+…+SSDIFF50)/(SSDIFF0+…+SSDIFF50).SSDIFFijTake not Same value, calculates obtained ratio value difference, so as to obtain the ratio with SSDIFFijThe function Q of changeij(SSDIFFij), It is designated as first function.

Wherein, in S104 steps, obtained accounting in cell i from the telephone traffic that cell i is switched to cell j according to first function Ratio retinue's cell i of the telephone traffic of interior application access is switched to the second function of cell j handover between cells Parameters variation;

In S104 steps, handover between cells parameter may include Hij, wherein HijTo be switched to cell j cell from cell i Between handoff threshold;

The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in cell in blocks, if cut It is the received signal strength and the cell j received received signal strength when the cell i that user terminal is received to change mode Difference is less than HijWhen triggering user terminal from cell i to cell j switching, according to first function, then can obtain set it is different Handover between cells thresholding HijWhen, the user terminal in serving cell i is accounted in service due to switching by the adjacent cell j quantity absorbed The ratio of the user terminal quantity of application access in cell i, then and then can obtain being switched to cell j telephone traffic from cell i The ratio for the telephone traffic for applying for access in cell i is accounted for handover between cells parameter HijThe second function P of changeij(Hij)=1- Qij(Hij);

In S104 steps, handover between cells parameter is except handover between cells thresholding HijOutside, it may also include Ci、Cj, wherein Ci It is the Downtilt by adjusting cell i so that the variable quantity of the received signal strength for the cell i that user terminal is received, Cj It is the Downtilt by adjusting cell j so that the variable quantity of the received signal strength for the cell j that user terminal is received.

The purpose for the arrangement is that in order to strengthen the flexibility of optimization calculating, obtain more preferable optimum results.It is small by adjusting The Downtilt in area, controls the received signal strength in cell edge, it is participated in the adjustment of handover between cells parameter. The effect of adjustment Downtilt can be equivalent on the received signal strength of user terminal be superimposed an adjusted value, on cell side At edge, the cell received signal strength distribution that user terminal is received will produce translation.If being now switched to cell j from cell i Handover between cells thresholding HijConstant, the telephone traffic for switching to cell j from cell i will change.If respectively by adjust cell i and Cell j Downtilt changes signal propagation losses, so that the received signal strength for the cell i that user terminal is received Variable quantity and the cell j variable quantity of received signal strength be respectively Ci、Cj, equally, then for every a pair in cell in blocks The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with, if switching mode is the cell received when user terminal The difference of i received signal strength and the cell j received received signal strength is less than HijWhen triggering user terminal from cell i To cell j switching, then the ratio that the telephone traffic for being switched to cell j from cell i accounts for the telephone traffic for applying for access in cell i will It is changed into Pij(Hij,Ci,Cj)=Pij(Hij+Ci-Cj), that is, corresponding translation is there occurs, so that having obtained cell i is switched to adjacent cell J telephone traffic accounts for the ratio for the telephone traffic for applying for access in cell i with Hij、Ci、CjThe second function P of the letter of changeij(Hij, Ci,Cj)=1-Qij(Hij+Ci-Cj)。

In addition, it is also contemplated that do not change handover between cells thresholding Hij, only adjustment cell i and cell j Downtilt are next Change cell i and be switched to cell j telephone traffic and account for the ratio of the telephone traffic for applying for access in cell i, then corresponding optimization is calculated Method obtains the optimal Downtilt of each cell in the case where not changing handover between cells thresholding so that cell in blocks is total Body telephone traffic is maximum.

To sum up, serving cell can be obtained it is switched to the telephone traffic of adjacent cell accounting for the telephone traffic of serving cell application access Ratio with handover between cells Parameters variation function.

Wherein, in S105 steps, it is configured to obtain the object function of handover between cells parameter, setting optimized algorithm Constraints, it is determined that each handover between cells parameter in cell in flakes.

In embodiments of the present invention, if for the cell i in cell in blocks to be optimized, its telephone traffic that can be provided money The source upper limit is Ri, the telephone traffic for applying for access in cell i is Ti(Ti is included because the reasons such as small area jam are refused by cell i The telephone traffic of access and the telephone traffic for being successfully accessed cell i).TiTwo parts can be divided into:Application is accessed and not occurred in cell i The telephone traffic S of switchingi(SiInclude being successfully accessed and still using cell i as the telephone traffic of serving cell and if being denied access Business amount), and it is switched to from cell i the telephone traffic sum of other each cells(here, suppose that adjacent area For j, then the telephone traffic that cell i is switched to cell j is Gij, corresponding handover between cells thresholding is Hij)。

For variable Si、GijAnd need the handover between cells parameter (i, j=1..N) of adjustment, the target of optimization problem Function is:

Object function one,

Wherein, max { } represents to make the value in braces { } maximum.

Preferably, can be simultaneously in optimization mesh in order to reduce the received signal strength fluctuation before and after user terminal switching as far as possible Consider to reduce handover between cells thresholding H in markijAbsolute value.So can increase on the basis of object function described in formula [1] Plus the object function described in formula [2] or formula [3], now, optimized using the method for multiple-objection optimization.

Object function two,

Object function two ', min { ∑sI=1,2 ..., NJ is the adjacent area of cell i, j ≠ i|Hij|}……[3]

The constraints of above-mentioned optimization aim can be set in the mode run according to actual environment cell.

Constraints one, the telephone traffic G for being switched to from cell i cell jijMeet the constraint of second function.

Preferably, it is also possible to consider the overlapping situation of handover between cells, i.e. user terminal in cell i are same in constraints one When meet the condition of cell j, k of switching to, but cell is finally switched to due to reasons such as the poor better offs of received signal strength K, so when calculating cell i is switched to cell j telephone traffic accounting, this part telephone traffic should be removed.

Preferably, constraints may also include:Constraints two and constraints three,

Constraints two, for each cell i, apply for the telephone traffic T of access in cell iiIt should be not less than in cell i Application access and the telephone traffic S not switchediWith the telephone traffic G for switching to each adjacent area jijSum;

Constraints three, for each cell j, application access and the telephone traffic S not switched in cell jjWith from The telephone traffic sum that other each cell is switch to cell j should be not more than cell j telephone traffic upper limit Rj

Preferably, in order to prevent the appearance of pingpang handoff, constraints may also include:Constraints four:

Cell j handover between cells thresholding H is switched to from cell iijHandover between cells with being switched to cell i from cell j Thresholding HjiSum should be less than a default negative value-P, wherein P>0.

Above-mentioned constraints one, constraints two, constraints three, constraints four are respectively:

Constraints one,

Situation one, handover between cells parameter only include HijSituation

Constraints is limited just like formula [4]:

Wherein P () represents the probability that the event in bracket () occurs, k, n=1..N.

Situation two, handover between cells parameter include Hij、Ci、Cj

Constraints is limited just like formula [5]:

Wherein P () represents the probability that the event in bracket () occurs, k, n=1..N.

Constraints two, three, four is respectively as formula [6], [7], [8] are limited:

Si≤Ti-∑J is the adjacent area of cell iGij……………………[6]

J is the adjacent area of cell iGij+Sj≤Rj……………………[7]

Hij+Hji<-P……………………[8]

Below by taking formula [5] as an example, constraints one is explained, to the explanation of formula [4] similarly.In formula [5], Qij (Hij+Ci-Cj) it is the switching condition for being unsatisfactory for being switched to cell j from cell i, the telephone traffic being retained in cell i is accounted in cell i The ratio of the telephone traffic of interior application access.Generally, the adjacent area for meeting switching condition is not only cell j, but there are multiple candidates Adjacent area, if only accounting for an adjacent area, is applicable scene limited.Therefore the right Section 3 ∑ in formula [5]K is the adjacent area of cell i, k ≠ jP (x≤Hij+Ci-Cj,x-y>Hij-Hik+Ck-Cj) represent to meet the condition for being switched to cell j and cell k simultaneously, still It is switched to the ratio that cell k accounts for the telephone traffic for applying for access in cell i.If there is other to meet switching condition Adjacent area, i.e. adjacent area number n are more than or equal to 3, then the probability for meeting n adjacent area switching condition uses formulaRepresent.

By taking six neighbor cells as an example:

Gij≤(1-Qij(Hij+Ci-Cj)-∑J is the adjacent area of cell i, k ≠ jP(x≤Hij+Ci-Cj,x-y>Hij-Hik+Ck-Cj)

+∑K, l are the adjacent area of cell i, k, l ≠ jP(x≤Hij+Ci-Cj,x-y>Hij-Hik+Ck-Cj,x-z>Hij-Hil+Cl-Cj)

-∑K, l, m are the adjacent area of cell i, k, l, m ≠ jP(x≤Hij+Ci-Cj,x-y>Hij-Hik+Ck-Cj,

x-z>Hij-Hil+Cl-Cj,x-d>Hij-Him+Cm-Cj)

+∑K, l, m, n are the adjacent area of cell i, k, l, m, n ≠ jP(x≤Hij+Ci-Cj,x-y>Hij-Hik+Ck-Cj,x-z>Hij-Hil+Cl-Cj,

x-d>Hij-Him+Cm-Cj,x-e>Hij-Hin+Cn-Cj)

-∑K, l, m, n, o are the adjacent area of cell i, k, l, m, n, o ≠ jP(x≤Hij+Ci-Cj,x-y>Hij-Hik+Ck-Cj,x-z>Hij-Hil+Cl- Cj,

x-d>Hij-Him+Cm-Cj,x-e>Hij-Hin+Cn-Cj,x-f>Hij-Hio+Co-Cj))*Ti……[9]

Wherein x ∈ SSDIFFij,y∈SSDIFFik,z∈SSDIFFil d∈SSDIFFim,e∈SSDIFFin,f∈ SSDIFFio, symbol " ∈ " represents to belong to the received signal strength difference set of serving cell and adjacent cell, wherein ij, ik, il, Im, in and io represent that serving cell is cell i respectively, and it is cell j, k, l, m, n, o that adjacent cell, which is respectively,.

Preferably, according to the limitation of actual conditions, except above-mentioned constraints, each value being related in optimization should also be set respectively From the upper limit and lower limit.Such as handover between cells thresholding can set an optional scope to avoid switching too early or switching too late from asking Topic.

Due in optimization aimAnd the Q in constraintsij(Hij+Ci-Cj) or Qij(Hij) it is relevant parameter Non-linear expressions, therefore there are linear and Nonlinear Constraints in the optimization problem simultaneously.It can generally use non-linear Lagrange and penalty function method are calculated.Here we quote lnner guide algorithm and above-mentioned model are solved.

For this optimization problem:minxF (x) s.t.g (x)≤0, definable penalty P (x, μ)=f (x)-μ ∑siln(- gi(x)), wherein μ is penalty factor.When μ is chosen for the positive number of very little, such as x meets constraints, then penalty In part in addition to f (x) will be close to 0, and the value of penalty will close to f (x) value, then optimization problem can convert For:minx,μP(x,μ)s.t.g(x)≤0.On the other hand, such as x is close to restrained boundary, and penalty P (x) will tend to be just infinite. Namely:In the case where being unsatisfactory for optimal conditions, the optimization problem after conversion can not necessarily obtain it and effectively solve.Therefore, optimize Problem can further convert minx,μP(x,μ), and in penalty P (x)-∑iln(-gi(x)) it is referred to as barrier function, plays Automatically the effect that constraints g (x)≤0 is come into force is made.Thus, the foregoing optimization problem to cell total capacity is reduced to a nothing The minimum problem of constraint., need to be minimum using sequence in order to balance optimal solution accuracy and computation complexity when solving the problem Change method, takes a suitable strictly monotone decreasing and the sequence { μ gone to zerok, and to each μkSolve the minimization of penalty function Problem, the minimum point sequence { x of acquisitionkThe solution of constrained optimization problem will be converged to.

The step of solving penalty minimization problem is as follows:

(1) the initial point x for meeting constraints is given0, initial penalty factor μ1, compressed coefficient r (0<r<1), as calculating The error ε of end condition<0.Number of iterations k=1 is set, into step (2).

(2) in kth time iteration, with xk-1For initial value, minimization problem min is solvedx,μP(x,μk), obtain minimal point xk

(3) such as-μkiln(-gi(xk))<ε, then stop calculating, obtain the solution x that optimization problem meets accuracy requirementk;It is no Then, if μk+1=r μk, go to step (2) and start+1 iteration of kth.

The step of said process in (2), Newton method or conjugate gradient method may be selected in the method for solving minimization problem.It is first First attempt to use Newton Algorithm, such as discontented afc algorithm is required or can not effectively solved, then with xk-1A neighbouring punishment letter Number P (x, μ) can be approximately that the interval of linear change as scope uses conjugate gradient method to be solved.

Wherein, in S106 steps, join according to each handover between cells of the handover between cells parameter setting cell in blocks of determination Number.

Each handover between cells in each handover between cells parameter setting cell in blocks obtained according to optimizing in step S105 Parameter.

Based on same inventive concept, a kind of device for obtaining handover between cells parameter is additionally provided in the embodiment of the present invention, Because the principle that the device solves problem is similar to the method that the embodiment of the present invention obtains handover between cells parameter, therefore the device Implementation may refer to the implementation of method, repeat part and repeat no more.

Fig. 2 shows the schematic diagram of the apparatus structure of acquisition handover between cells parameter provided in an embodiment of the present invention, specifically Including:

Acquiring unit 201, the nothing for obtaining the received signal strength that the user terminal of each cell in cell in blocks is reported Line measurement report;

First determining unit 202, for each reported for each user terminal in acquired cell in blocks Measurement report, determines the difference of serving cell received signal strength and the received signal strength of each adjacent cell in measurement report;

Second determining unit 203, is switched to cell j's for being configured with for every a pair in cell in blocks from cell i The cell of neighboring BS relationship, in default measurement period, counts the number of times that each difference occurs, sets difference maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo difference maximum SSDIFFijmax's The number of times sum that each difference occurs in interval is accounted for from difference minimum value SSDIFFijminTo difference maximum SSDIFFijmaxInterval The ratio for the number of times sum that interior each difference occurs, obtains the ratio with specified difference SSDIFFijThe function Q of changeij (SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is the number of cell in cell in blocks;

3rd determining unit 204, for determining that the telephone traffic for being switched to cell j from cell i is accounted for small according to first function Ratio retinue's cell i of the telephone traffic of application access is switched to the second letter of cell j handover between cells Parameters variation in area i Number;

Processing unit 205, for constructing the object function for being used for obtaining handover between cells parameter, setting optimization The constraints of algorithm, it is determined that each handover between cells parameter in cell in flakes, wherein object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from Cell i is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;

Setting unit 206, for each small of the handover between cells parameter setting cell in blocks that is determined according to processing unit 205 Interval handover between cells parameter.

Further, handover between cells parameter includes Hij, wherein HijTo be switched to cell j handover between cells from cell i Thresholding.

3rd determining unit 204 specifically for:It is configured with for every a pair in cell in blocks from cell i and is switched to cell The cell of j neighboring BS relationship, if switching mode is the received signal strength of the cell i received when user terminal with receiving Cell j received signal strength difference be less than HijWhen triggering user terminal from cell i to cell j switching, it is determined that the Two functions are Pij(Hij), wherein Pij(Hij)=1-Qij(Hij)。

Constraints includes:First constraints, the first constraints is:

Wherein P () is represented The probability that event in bracket () occurs, TiTo apply for the telephone traffic of access, H in cell iikTo be switched to cell from cell i K handover between cells thresholding, k, n=1..N.

Or,

Handover between cells parameter includes Hij、CiAnd Cj, wherein HijTo be switched to cell j handover between cells door from cell i Limit, CiIt is the Downtilt by adjusting cell i so that the change of the received signal strength for the cell i that user terminal is received Amount, CjFor the variable quantity of the received signal strength by adjusting the cell j that cell j Downtilt user terminal is received.

3rd determining unit 204 specifically for:It is configured with for every a pair in cell in blocks from cell i and is switched to cell The cell of j neighboring BS relationship, if switching mode is the received signal strength of the cell i received when user terminal with receiving Cell j received signal strength difference be less than HijWhen triggering user terminal from cell i to cell j switching, it is determined that the Two functions are Pij(Hij,Ci,Cj), wherein Pij(Hij,Ci,Cj)=1-Qij(Hij+Ci-Cj)。

Constraints includes:First constraints, the first constraints is:

Wherein, P () represents the probability that the event in bracket () occurs, TiTo apply for the telephone traffic of access, H in cell iikTo be cut from cell i Change to cell k handover between cells thresholding, k, n=1..N.

Further, when handover between cells parameter includes HijWhen, HijAlso meet the H of each minizone in cell in blocksij's Absolute value sum is minimum or quadratic sum is minimum.

In addition, it is also possible to consider HijMeet:When the cell i of cell in blocks is mutually configured to adjacent area with cell j, cut from cell i Change to cell j handover between cells thresholding HijHandover between cells thresholding H with being switched to cell i from cell jjiSum is less than pre- If negative value.

Further, processing unit 205 in processing in addition to considering the first constraints, it is also contemplated that meet second about Beam condition and the 3rd constraints:

Second constraints is:For each cell i in cell in blocks, Si≤Ti-∑J is the adjacent area of cell iGij, wherein Ti To apply for the telephone traffic of access in cell i;

3rd constraints is:For each cell j in cell in blocks, ∑J is the adjacent area of cell iGij+Sj≤Rj, wherein Rj For the cell j telephone traffic upper limit, SjFor application access and the telephone traffic not switched in cell j.

Further, the wireless measurement acquired in acquiring unit 201 is reported as the wireless measurement report periodically reported.

Further, received signal strength is:Received signal level RXLEV, Primary Common Control Physical Channel receive signal One in code power P-CCPCH RSCP and Reference Signal Received Power RSRP.

Fig. 3 shows the schematic diagram of acquisition handover between cells parameter system provided in an embodiment of the present invention, and the system includes:

Network side equipment 301, for obtaining the received signal strength that the user terminal of each cell in cell in blocks is reported Wireless measurement is reported;For each acquired measurement report, determine in measurement report serving cell received signal strength with The difference of the received signal strength of each adjacent cell;It is configured with for every a pair in cell in blocks from cell i and is switched to cell j Neighboring BS relationship cell, in default measurement period, count the number of times that each difference occurs, set difference maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo difference maximum SSDIFFijmax's The number of times sum that each difference occurs in interval is accounted for from difference minimum value SSDIFFijminTo difference maximum SSDIFFijmaxInterval The ratio for the number of times sum that interior each difference occurs, obtains ratio with specified difference SSDIFFijThe first function Q of changeij (SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is the number of cell in cell in blocks;Obtained according to first function from small Area i be switched to cell j telephone traffic account for apply in cell i access telephone traffic ratio retinue cell i be switched to cell j Handover between cells Parameters variation second function;It is configured to obtain the object function of handover between cells parameter, sets excellent Change the constraints of algorithm, it is determined that each handover between cells parameter in cell in flakes, wherein object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from Cell i is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;According to determination The handover between cells parameter of each minizone in handover between cells parameter setting cell in blocks;

User terminal 302, for reporting wireless measurement to report to network side equipment.

The embodiments of the invention provide a kind of method for obtaining handover between cells parameter, apparatus and system, by obtaining in real time The wireless measurement report that the user terminal of cell in blocks is reported is taken, the application access words that handover between cells telephone traffic accounts for cell are obtained The ratio of business amount utilizes the object function and constraint bar of the construction of function optimized algorithm with the function of handover between cells Parameters variation Part, it is determined that in flakes in cell each cell handover between cells parameter so that the telephone traffic summation of each cell is maximum in cell in blocks. Compared with the method that existing manual type carries out network capacity optimization, due to collecting measurement report, statistics automatically using system Analysis, adjust automatically handover between cells parameter carries out network capacity optimization, therefore more time saving and energy saving, and reaches real-time optimization net The purpose of network;As a result of objective optimization, optimization method is more scientific, and optimum results are more accurate;Due to being examined in optimization process Consider the handover between cells parameter of each cell of cell in blocks, and the target optimized is that the application for making each cell of cell in blocks is accessed Telephone traffic summation it is maximum, therefore the overall telephone traffics of all cells in cell in blocks can be taken into account.

It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of product.

The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent Select embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims (17)

1. a kind of method for obtaining handover between cells parameter, it is characterised in that including:
Obtain the wireless measurement report for the received signal strength that the user terminal of each cell in cell in blocks is reported;
For each acquired measurement report, serving cell received signal strength and each neighbour in the measurement report are determined The difference of the received signal strength of cell;
The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in the cell in blocks, default Measurement period in, count the number of times that each difference occurs, setting difference maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo the difference maximum SSDIFFijmaxInterval in each difference occur Number of times sum is accounted for from the difference minimum value SSDIFFijminTo the difference maximum SSDIFFijmaxInterval in each difference go out The ratio of existing number of times sum, obtains the ratio with the specified difference SSDIFFijThe first function Q of changeij (SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is the number of cell in the cell in blocks;
Obtained accounting for the telephone traffic for applying for access in cell i from the telephone traffic that cell i is switched to cell j according to the first function Ratio retinue cell i be switched to cell j handover between cells Parameters variation second function;
It is configured to obtain the object function of handover between cells parameter, optimized algorithm is set according to the second function Constraints, determines each handover between cells parameter in the cell in blocks, wherein the object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from Cell i is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;
According to the handover between cells parameter of each minizone in cell in blocks described in the handover between cells parameter setting of determination.
2. the method as described in claim 1, it is characterised in that
The handover between cells parameter includes Hij, wherein, HijTo be switched to cell j handover between cells thresholding from cell i;
The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in the cell in blocks, if cut It is the received signal strength and the cell j received received signal strength when the cell i that user terminal is received to change mode Difference is less than HijWhen, triggering user terminal is from cell i to cell j switching, it is determined that the second function is Pij(Hij), its Middle Pij(Hij)=1-Qij(Hij);
The constraints includes:First constraints, first constraints is
Wherein P () represents the probability that the event in bracket () occurs, TiTo apply for the telephone traffic of access, H in cell iikTo be cut from cell i Change to cell k handover between cells thresholding, k, n=1..N, x be the cell i that user terminal is received received signal strength with The difference of the cell j received received signal strength, y is the received signal strength for the cell i that user terminal is received with connecing The difference of the cell k received received signal strength,To take the permutation and combination number of i cell from n-1 cell.
3. the method as described in claim 1, it is characterised in that
The handover between cells parameter includes Hij、CiAnd Cj, wherein wherein HijCut for minizone that cell j is switched to from cell i Change thresholding, CiIt is the Downtilt by adjusting cell i so that the received signal strength of cell i that user terminal is received Variable quantity, CjIt is the Downtilt by adjusting cell j so that cell j that user terminal is received received signal strength Variable quantity;
The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in the cell in blocks, if cut It is the received signal strength and the cell j received received signal strength when the cell i that user terminal is received to change mode Difference is less than HijWhen, triggering user terminal is from cell i to cell j switching, it is determined that the second function is Pij(Hij,Ci, Cj), wherein Pij(Hij,Ci,Cj)=1-Qij(Hij+Ci-Cj);
The constraints includes:First constraints, first constraints is:
Wherein, P () represents the probability that the event in bracket () occurs, TiTo apply for the telephone traffic of access, H in cell iikTo be cut from cell i Change to cell k handover between cells thresholding, k, n=1..N, x be the cell i that user terminal is received received signal strength with The difference of the cell j received received signal strength, y is the received signal strength for the cell i that user terminal is received with connecing The difference of the cell k received received signal strength,To take the permutation and combination number of i cell from n-1 cell.
4. method as claimed in claim 2 or claim 3, it is characterised in that the HijMeet:Each minizone in the cell in blocks HijAbsolute value sum it is minimum or quadratic sum is minimum.
5. method as claimed in claim 2 or claim 3, it is characterised in that the HijMeet:When the cell in blocks cell i with When cell j is mutually configured to adjacent area, cell j handover between cells thresholding H is switched to from cell iijWith being switched to cell i from cell j Handover between cells thresholding HjiSum is less than default negative value.
6. method as claimed in claim 2 or claim 3, it is characterised in that the constraints also includes:Second constraints and Three constraintss;
Second constraints is:For each cell i in the cell in blocks, Si≤Ti-∑J is the adjacent area of cell iGij
3rd constraints is:For each cell j in the cell in blocks, ∑J is the adjacent area of cell iGij+Sj≤Rj, its Middle RjFor the cell j telephone traffic upper limit, SjFor application access and the telephone traffic not switched in cell j.
7. the method for the acquisition handover between cells parameter as described in claims 1 to 3 any one, it is characterised in that the nothing Line measurement report is reported for the wireless measurement periodically reported.
8. the method for the acquisition handover between cells parameter as described in claims 1 to 3 any one, it is characterised in that described to connect Receiving signal intensity is:Received signal level RXLEV, Primary Common Control Physical Channel received signal code power P-CCPCH RSCP and One in Reference Signal Received Power RSRP.
9. a kind of device for obtaining handover between cells parameter, it is characterised in that including:
Acquiring unit, the wireless measurement report for obtaining the received signal strength that the user terminal of each cell in cell in blocks is reported Accuse;
First determining unit, for each measurement reported for each user terminal in the acquired cell in blocks Report, determines the difference of serving cell received signal strength and the received signal strength of each adjacent cell in the measurement report;
Second determining unit, cell j adjacent area is switched to for being configured with for every a pair in the cell in blocks from cell i The cell of relation, in default measurement period, counts the number of times that each difference occurs, setting difference maximum SSDIFFijmaxWith Difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo the difference maximum SSDIFFijmaxInterval in it is each The number of times sum that difference occurs is accounted for from the difference minimum value SSDIFFijminTo the difference maximum SSDIFFijmaxInterval The ratio for the number of times sum that interior each difference occurs, obtains the ratio with the specified difference SSDIFFijThe first function of change Qij(SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is the number of cell in the cell in blocks;
3rd determining unit, for determining that the telephone traffic for being switched to cell j from cell i is accounted in cell i according to the first function Ratio retinue's cell i of the telephone traffic of interior application access is switched to the second function of cell j handover between cells Parameters variation;
Processing unit, for constructing the object function for being used for obtaining handover between cells parameter, sets excellent according to the second function Change the constraints of algorithm, each handover between cells parameter in the cell in blocks is determined, wherein the object function includes:Wherein, max { } represents to make the value in braces { } maximum, GijFor from Cell i is switched to cell j telephone traffic, SiFor application access and the telephone traffic not switched in cell i;
Setting unit, for each cell of cell in flakes described in the handover between cells parameter setting that is determined according to the processing unit Between handover between cells parameter.
10. the device of handover between cells parameter is obtained as claimed in claim 9, it is characterised in that
The handover between cells parameter includes Hij, wherein HijTo be switched to cell j handover between cells thresholding from cell i;
3rd determining unit specifically for:
The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in the cell in blocks, if cut It is the received signal strength and the cell j received received signal strength when the cell i that user terminal is received to change mode Difference is less than HijWhen, triggering user terminal is from cell i to cell j switching, it is determined that the second function is Pij(Hij), its Middle Pij(Hij)=1-Qij(Hij);
The constraints includes:First constraints, first constraints is
Wherein P () represents the probability that the event in bracket () occurs, TiTo apply for the telephone traffic of access, H in cell iikTo be cut from cell i Change to cell k handover between cells thresholding, k, n=1..N, x be the cell i that user terminal is received received signal strength with The difference of the cell j received received signal strength, y is the received signal strength for the cell i that user terminal is received with connecing The difference of the cell k received received signal strength,To take the permutation and combination number of i cell from n-1 cell.
11. the device of handover between cells parameter is obtained as claimed in claim 9, it is characterised in that
The handover between cells parameter includes Hij、CiAnd Cj, wherein HijTo be switched to cell j handover between cells door from cell i Limit, CiIt is the Downtilt by adjusting cell i so that the change of the received signal strength for the cell i that user terminal is received Amount, CjIt is the Downtilt by adjusting cell j so that the change of the received signal strength for the cell j that user terminal is received Amount;
3rd determining unit specifically for:
The cell for the neighboring BS relationship that cell j is switched to from cell i is configured with for every a pair in the cell in blocks, if cut It is the received signal strength and the cell j received received signal strength when the cell i that user terminal is received to change mode Difference is less than HijWhen, triggering user terminal is from cell i to cell j switching, it is determined that the second function is Pij(Hij,Ci, Cj), wherein Pij(Hij,Ci,Cj)=1-Qij(Hij+Ci-Cj);
The constraints includes:First constraints, first constraints is:
Wherein, P () represents the probability that the event in bracket () occurs, TiTo apply for the telephone traffic of access, H in cell iikTo be cut from cell i Change to cell k handover between cells thresholding, k, n=1..N, x be the cell i that user terminal is received received signal strength with The difference of the cell j received received signal strength, y is the received signal strength for the cell i that user terminal is received with connecing The difference of the cell k received received signal strength,To take the permutation and combination number of i cell from n-1 cell.
12. the device of the acquisition handover between cells parameter as described in claim 10 or 11, it is characterised in that the HijMeet: The H of each minizone in the cell in blocksijAbsolute value sum it is minimum or quadratic sum is minimum.
13. the device of the acquisition handover between cells parameter as described in claim 10 or 11, it is characterised in that the HijMeet: When the cell i of the cell in blocks is mutually configured to adjacent area with cell j, cell j handover between cells thresholding is switched to from cell i HijHandover between cells thresholding H with being switched to cell i from cell jjiSum is less than default negative value.
14. the device of the acquisition handover between cells parameter as described in claim 10 or 11, it is characterised in that the constraints Also include:Second constraints and the 3rd constraints;
Second constraints is:For each cell i in the cell in blocks, Si≤Ti-∑J is the adjacent area of cell iGij
3rd constraints is:For each cell j in the cell in blocks, ∑J is the adjacent area of cell iGij+Sj≤Rj, its Middle RjFor celljThe telephone traffic upper limit, SjFor application access and the telephone traffic not switched in cell j.
15. the device of the acquisition handover between cells parameter as described in claim 9 to 11 any one, it is characterised in that described Wireless measurement is reported as the wireless measurement report periodically reported.
16. the device of the acquisition handover between cells parameter as described in claim 9 to 11 any one, it is characterised in that described Received signal strength is:Received signal level RXLEV, Primary Common Control Physical Channel received signal code power P-CCPCH RSCP With one in Reference Signal Received Power RSRP.
17. a kind of system for obtaining handover between cells parameter, it is characterised in that including:
Network side equipment, the wireless measurement for obtaining the received signal strength that the user terminal of each cell in cell in blocks is reported Report;For each acquired measurement report, determine in the measurement report serving cell received signal strength with it is each The difference of the received signal strength of adjacent cell;It is configured with for every a pair in the cell in blocks from cell i and is switched to cell j Neighboring BS relationship cell, in default measurement period, count the number of times that each difference occurs, set difference maximum SSDIFFijmaxWith difference minimum value SSDIFFijmin, it is determined that from specified difference SSDIFFijTo the difference maximum SSDIFFijmaxInterval in the number of times sum that occurs of each difference account for from the difference minimum value SSDIFFijminTo the difference most Big value SSDIFFijmaxInterval in the ratio of number of times sum that occurs of each difference, obtain the ratio with the specified difference SSDIFFijThe first function Q of changeij(SSDIFFij), wherein i, j=1..N, i is not equal to j, and N is small in the cell in blocks The number in area;Obtained accounting for the application access in cell i from the telephone traffic that cell i is switched to cell j according to the first function Ratio retinue's cell i of telephone traffic is switched to the second function of cell j handover between cells Parameters variation;It is configured to obtain small The object function of interval handoff parameter, the constraints of optimized algorithm is set according to the second function, is determined described small in flakes Each handover between cells parameter in area, wherein the object function includes: Wherein, max { } represents to make the value in braces { } maximum, GijTo be switched to cell j telephone traffic, S from cell iiFor in cell Application access and the telephone traffic not switched in i;According to each in cell in blocks described in the handover between cells parameter setting of determination The handover between cells parameter of minizone;
User terminal, for reporting wireless measurement to report to the network side equipment.
CN201310206849.XA 2013-05-29 2013-05-29 A kind of methods, devices and systems for obtaining handover between cells parameter CN104219707B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310206849.XA CN104219707B (en) 2013-05-29 2013-05-29 A kind of methods, devices and systems for obtaining handover between cells parameter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310206849.XA CN104219707B (en) 2013-05-29 2013-05-29 A kind of methods, devices and systems for obtaining handover between cells parameter

Publications (2)

Publication Number Publication Date
CN104219707A CN104219707A (en) 2014-12-17
CN104219707B true CN104219707B (en) 2017-11-03

Family

ID=52100758

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310206849.XA CN104219707B (en) 2013-05-29 2013-05-29 A kind of methods, devices and systems for obtaining handover between cells parameter

Country Status (1)

Country Link
CN (1) CN104219707B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101141774A (en) * 2007-01-12 2008-03-12 中兴通讯股份有限公司 Wireless network planning method of CDMA service
CN101932015A (en) * 2009-06-19 2010-12-29 中兴通讯股份有限公司 Handoff parameter adjusting method and device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9107133B2 (en) * 2009-01-06 2015-08-11 Qualcomm Incorporated Adaptation of handover parameters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101141774A (en) * 2007-01-12 2008-03-12 中兴通讯股份有限公司 Wireless network planning method of CDMA service
CN101932015A (en) * 2009-06-19 2010-12-29 中兴通讯股份有限公司 Handoff parameter adjusting method and device

Also Published As

Publication number Publication date
CN104219707A (en) 2014-12-17

Similar Documents

Publication Publication Date Title
Ye et al. User association for load balancing in heterogeneous cellular networks
US10070362B2 (en) System and method to facilitate radio access point load prediction in a network environment
Deng et al. Heterogeneous cellular network models with dependence
US9220017B2 (en) Radio parameter control apparatus, base station apparatus, radio parameter control method, and non-transitory computer readable medium
CN104904259B (en) The method for obtaining measurement in the case where strong and/or high interference
CN102202330B (en) Coverage self-optimization method of cellular mobile communication system
CN103929781B (en) Cross-layer interference coordination optimization method in super dense heterogeneous network
JP5924789B2 (en) Methods, devices, and systems for managing coverage optimization
EP2728926A1 (en) Load balancing in mobile telecommunications networks
US9282528B2 (en) Apparatus and method for detecting a location of a mobile station in a mobile communication system
CN100375575C (en) Measurement control method for switching between mobile communication cells
ES2340947T3 (en) System and method for measuring and configuring 2g configured neighborhoods incorrectly in 3g networks.
US20140335851A1 (en) Method and Telecommunications Network for Deactivating or Activating a Cell in Such a Network
KR101648566B1 (en) Method and system for obtaining radio access network(ran) information of cellular telecommunications networks
US8331939B2 (en) Method and apparatus for neighbor cell configuration and method and apparatus for femtocell base station configuration
CN103338504B (en) The associating self-configuration method of multiple AP channel and power in WLAN (wireless local area network)
Micallef et al. Cell size breathing and possibilities to introduce cell sleep mode
Zhou et al. Energy source aware target cell selection and coverage optimization for power saving in cellular networks
RU2559202C1 (en) Method and apparatus for self-optimisation of efficiency and coverage in mobile network
CN107135055A (en) Measuring method, CSI RS resource share methods and device
CN101572919B (en) Method for carrying out switching strategy selection for user equipment (UE) in LTE system
CN104640148B (en) Measure report method, Apparatus and system
JP5982579B2 (en) Network coverage planning method and apparatus for evolution communication system
CN103369668B (en) Wireless communication system is utilized to carry out the method for location positioning, device and mobile terminal
CN103079235B (en) The method and device of load balancing is realized in LTE system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant